Ingress for VIP

Signed-off-by: Irbe Krumina <irbe@tailscale.com>

.github/workflows/checklocks.yml

@@ -18,17 +18,11 @@ jobs:
     runs-on: [ ubuntu-latest ]
     steps:
       - name: Check out code
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@v4
 
       - name: Build checklocks
         run: ./tool/go build -o /tmp/checklocks gvisor.dev/gvisor/tools/checklocks/cmd/checklocks
 
       - name: Run checklocks vet
-        # TODO(#12625): add more packages as we add annotations
-        run: |-
-          ./tool/go vet -vettool=/tmp/checklocks \
-            ./envknob           \
-            ./ipn/store/mem     \
-            ./net/stun/stuntest \
-            ./net/wsconn        \
-            ./proxymap
+        # TODO: remove || true once we have applied checklocks annotations everywhere.
+        run: ./tool/go vet -vettool=/tmp/checklocks ./... || true

.github/workflows/codeql-analysis.yml

@@ -45,17 +45,17 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
 
     # Install a more recent Go that understands modern go.mod content.
     - name: Install Go
-      uses: actions/setup-go@f111f3307d8850f501ac008e886eec1fd1932a34 # v5.3.0
+      uses: actions/setup-go@v4
       with:
         go-version-file: go.mod
 
     # Initializes the CodeQL tools for scanning.
     - name: Initialize CodeQL
-      uses: github/codeql-action/init@6bb031afdd8eb862ea3fc1848194185e076637e5 # v3.28.11
+      uses: github/codeql-action/init@v2
       with:
         languages: ${{ matrix.language }}
         # If you wish to specify custom queries, you can do so here or in a config file.
@@ -66,7 +66,7 @@ jobs:
     # Autobuild attempts to build any compiled languages  (C/C++, C#, or Java).
     # If this step fails, then you should remove it and run the build manually (see below)
     - name: Autobuild
-      uses: github/codeql-action/autobuild@6bb031afdd8eb862ea3fc1848194185e076637e5 # v3.28.11
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -80,4 +80,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@6bb031afdd8eb862ea3fc1848194185e076637e5 # v3.28.11
+      uses: github/codeql-action/analyze@v2

.github/workflows/docker-file-build.yml

@@ -10,6 +10,6 @@ jobs:
   deploy:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+    - uses: actions/checkout@v4
     - name: "Build Docker image"
       run: docker build .

.github/workflows/flakehub-publish-tagged.yml

@@ -17,7 +17,7 @@ jobs:
       id-token: "write"
       contents: "read"
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: "actions/checkout@v4"
         with:
           ref: "${{ (inputs.tag != null) && format('refs/tags/{0}', inputs.tag) || '' }}"
       - uses: "DeterminateSystems/nix-installer-action@main"

.github/workflows/go-licenses.yml

@@ -0,0 +1,64 @@
+name: go-licenses
+
+on:
+  # run action when a change lands in the main branch which updates go.mod or
+  # our license template file. Also allow manual triggering.
+  push:
+    branches:
+      - main
+    paths:
+      - go.mod
+      - .github/licenses.tmpl
+      - .github/workflows/go-licenses.yml
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  update-licenses:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Set up Go
+        uses: actions/setup-go@v4
+        with:
+          go-version-file: go.mod
+
+      - name: Install go-licenses
+        run: |
+          go install github.com/google/go-licenses@v1.2.2-0.20220825154955-5eedde1c6584
+
+      - name: Run go-licenses
+        env:
+          # include all build tags to include platform-specific dependencies
+          GOFLAGS: "-tags=android,cgo,darwin,freebsd,ios,js,linux,openbsd,wasm,windows"
+        run: |
+          [ -d licenses ] || mkdir licenses
+          go-licenses report tailscale.com/cmd/tailscale tailscale.com/cmd/tailscaled > licenses/tailscale.md --template .github/licenses.tmpl
+
+      - name: Get access token
+        uses: tibdex/github-app-token@b62528385c34dbc9f38e5f4225ac829252d1ea92 # v1.8.0
+        id: generate-token
+        with:
+          app_id: ${{ secrets.LICENSING_APP_ID }}
+          installation_id: ${{ secrets.LICENSING_APP_INSTALLATION_ID }}
+          private_key: ${{ secrets.LICENSING_APP_PRIVATE_KEY }}
+
+      - name: Send pull request
+        uses: peter-evans/create-pull-request@284f54f989303d2699d373481a0cfa13ad5a6666 #v5.0.1
+        with:
+          token: ${{ steps.generate-token.outputs.token }}
+          author: License Updater <noreply+license-updater@tailscale.com>
+          committer: License Updater <noreply+license-updater@tailscale.com>
+          branch: licenses/cli
+          commit-message: "licenses: update tailscale{,d} licenses"
+          title: "licenses: update tailscale{,d} licenses"
+          body: Triggered by ${{ github.repository }}@${{ github.sha }}
+          signoff: true
+          delete-branch: true
+          team-reviewers: opensource-license-reviewers

.github/workflows/golangci-lint.yml

@@ -23,17 +23,18 @@ jobs:
     name: lint
     runs-on: ubuntu-latest
     steps:
-      - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      - uses: actions/checkout@v4
 
-      - uses: actions/setup-go@f111f3307d8850f501ac008e886eec1fd1932a34 # v5.3.0
+      - uses: actions/setup-go@v4
         with:
           go-version-file: go.mod
           cache: false
 
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@2226d7cb06a077cd73e56eedd38eecad18e5d837 # v6.5.0
+        # Note: this is the 'v3' tag as of 2023-08-14
+        uses: golangci/golangci-lint-action@639cd343e1d3b897ff35927a75193d57cfcba299
         with:
-          version: v1.64
+          version: v1.56
 
           # Show only new issues if it's a pull request.
           only-new-issues: true

.github/workflows/govulncheck.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Check out code into the Go module directory
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@v4
 
       - name: Install govulncheck
         run: ./tool/go install golang.org/x/vuln/cmd/govulncheck@latest
@@ -24,13 +24,13 @@ jobs:
 
       - name: Post to slack
         if: failure() && github.event_name == 'schedule'
-        uses: slackapi/slack-github-action@485a9d42d3a73031f12ec201c457e2162c45d02d # v2.0.0
+        uses: slackapi/slack-github-action@v1.24.0
+        env:
+          SLACK_BOT_TOKEN: ${{ secrets.GOVULNCHECK_BOT_TOKEN }}
         with:
-          method: chat.postMessage
-          token: ${{ secrets.GOVULNCHECK_BOT_TOKEN }}
+          channel-id: 'C05PXRM304B'
           payload: |
             {
-              "channel": "C08FGKZCQTW",
               "blocks": [
                 {
                   "type": "section",

.github/workflows/installer.yml

@@ -6,13 +6,11 @@ on:
       - "main"
     paths:
       - scripts/installer.sh
-      - .github/workflows/installer.yml
   pull_request:
     branches:
       - "*"
     paths:
       - scripts/installer.sh
-      - .github/workflows/installer.yml
 
 jobs:
   test:
@@ -31,11 +29,14 @@ jobs:
           - "debian:stable-slim"
           - "debian:testing-slim"
           - "debian:sid-slim"
+          - "ubuntu:18.04"
           - "ubuntu:20.04"
           - "ubuntu:22.04"
-          - "ubuntu:24.04"
+          - "ubuntu:22.10"
+          - "ubuntu:23.04"
           - "elementary/docker:stable"
           - "elementary/docker:unstable"
+          - "parrotsec/core:lts-amd64"
           - "parrotsec/core:latest"
           - "kalilinux/kali-rolling"
           - "kalilinux/kali-dev"
@@ -48,7 +49,7 @@ jobs:
           - "opensuse/leap:latest"
           - "opensuse/tumbleweed:latest"
           - "archlinux:latest"
-          - "alpine:3.21"
+          - "alpine:3.14"
           - "alpine:latest"
           - "alpine:edge"
         deps:
@@ -58,16 +59,15 @@ jobs:
           # Check a few images with wget rather than curl.
           - { image: "debian:oldstable-slim", deps: "wget" }
           - { image: "debian:sid-slim", deps: "wget" }
+          - { image: "ubuntu:23.04", deps: "wget" }
+          # Ubuntu 16.04 also needs apt-transport-https installed.
+          - { image: "ubuntu:16.04", deps: "curl apt-transport-https" }
+          - { image: "ubuntu:16.04", deps: "wget apt-transport-https" }
     runs-on: ubuntu-latest
     container:
       image: ${{ matrix.image }}
       options: --user root
     steps:
-    - name: install dependencies (pacman)
-      # Refresh the package databases to ensure that the tailscale package is
-      # defined.
-      run: pacman -Sy
-      if: contains(matrix.image, 'archlinux')
     - name: install dependencies (yum)
       # tar and gzip are needed by the actions/checkout below.
       run: yum install -y --allowerasing tar gzip ${{ matrix.deps }}
@@ -91,7 +91,7 @@ jobs:
         || contains(matrix.image, 'parrotsec')
         || contains(matrix.image, 'kalilinux')
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: run installer
       run: scripts/installer.sh
       # Package installation can fail in docker because systemd is not running

.github/workflows/kubemanifests.yaml

@@ -2,8 +2,8 @@ name: "Kubernetes manifests"
 on:
   pull_request:
    paths: 
-   - 'cmd/k8s-operator/**'
-   - 'k8s-operator/**'
+   - './cmd/k8s-operator/**'
+   - './k8s-operator/**'
    - '.github/workflows/kubemanifests.yaml'
 
 # Cancel workflow run if there is a newer push to the same PR for which it is
@@ -17,7 +17,7 @@ jobs:
     runs-on: [ ubuntu-latest ]
     steps:
     - name: Check out code
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: Build and lint Helm chart
       run: |
         eval `./tool/go run ./cmd/mkversion`

.github/workflows/natlab-integrationtest.yml

@@ -1,27 +0,0 @@
-# Run some natlab integration tests.
-# See https://github.com/tailscale/tailscale/issues/13038
-name: "natlab-integrationtest"
-
-concurrency:
-  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-
-on:
-  pull_request:
-    paths:
-      - "tstest/integration/nat/nat_test.go"
-jobs:
-  natlab-integrationtest:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out code
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - name: Install qemu
-        run: |
-          sudo rm /var/lib/man-db/auto-update
-          sudo apt-get -y update
-          sudo apt-get -y remove man-db
-          sudo apt-get install -y qemu-system-x86 qemu-utils
-      - name: Run natlab integration tests
-        run: |
-          ./tool/go test -v -run=^TestEasyEasy$ -timeout=3m -count=1 ./tstest/integration/nat  --run-vm-tests

.github/workflows/ssh-integrationtest.yml

@@ -1,23 +0,0 @@
-# Run the ssh integration tests with `make sshintegrationtest`.
-# These tests can also be running locally.
-name: "ssh-integrationtest"
-
-concurrency:
-  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
-  cancel-in-progress: true
-
-on:
-  pull_request:
-    paths:
-      - "ssh/**"
-      - "tempfork/gliderlabs/ssh/**"
-      - ".github/workflows/ssh-integrationtest"
-jobs:
-  ssh-integrationtest:
-    runs-on: ubuntu-latest
-    steps:
-      - name: Check out code
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-      - name: Run SSH integration tests
-        run: |
-          make sshintegrationtest

.github/workflows/test.yml

@@ -50,7 +50,7 @@ jobs:
           - shard: '4/4'
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: build test wrapper
       run: ./tool/go build -o /tmp/testwrapper ./cmd/testwrapper
     - name: integration tests as root
@@ -64,6 +64,7 @@ jobs:
       matrix:
         include:
           - goarch: amd64
+            coverflags: "-coverprofile=/tmp/coverage.out"
           - goarch: amd64
             buildflags: "-race"
             shard: '1/3'
@@ -77,9 +78,9 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: Restore Cache
-      uses: actions/cache@d4323d4df104b026a6aa633fdb11d772146be0bf # v4.2.2
+      uses: actions/cache@v3
       with:
         # Note: unlike the other setups, this is only grabbing the mod download
         # cache, rather than the whole mod directory, as the download cache
@@ -118,10 +119,15 @@ jobs:
     - name: build test wrapper
       run: ./tool/go build -o /tmp/testwrapper ./cmd/testwrapper
     - name: test all
-      run: NOBASHDEBUG=true PATH=$PWD/tool:$PATH /tmp/testwrapper ./... ${{matrix.buildflags}}
+      run: NOBASHDEBUG=true PATH=$PWD/tool:$PATH /tmp/testwrapper ${{matrix.coverflags}} ./... ${{matrix.buildflags}}
       env:
         GOARCH: ${{ matrix.goarch }}
         TS_TEST_SHARD: ${{ matrix.shard }}
+    - name: Publish to coveralls.io
+      if: matrix.coverflags != '' # only publish results if we've tracked coverage
+      uses: shogo82148/actions-goveralls@v1
+      with:
+        path-to-profile: /tmp/coverage.out
     - name: bench all
       run: ./tool/go test ${{matrix.buildflags}} -bench=. -benchtime=1x -run=^$ $(for x in $(git grep -l "^func Benchmark" | xargs dirname | sort | uniq); do echo "./$x"; done)
       env:
@@ -139,25 +145,21 @@ jobs:
           echo "Build/test created untracked files in the repo (file names above)."
           exit 1
         fi
-    - name: Tidy cache
-      shell: bash
-      run: |
-        find $(go env GOCACHE) -type f -mmin +90 -delete
-        find $(go env GOMODCACHE)/cache -type f -mmin +90 -delete
+
   windows:
     runs-on: windows-2022
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
 
     - name: Install Go
-      uses: actions/setup-go@f111f3307d8850f501ac008e886eec1fd1932a34 # v5.3.0
+      uses: actions/setup-go@v4
       with:
         go-version-file: go.mod
         cache: false
 
     - name: Restore Cache
-      uses: actions/cache@d4323d4df104b026a6aa633fdb11d772146be0bf # v4.2.2
+      uses: actions/cache@v3
       with:
         # Note: unlike the other setups, this is only grabbing the mod download
         # cache, rather than the whole mod directory, as the download cache
@@ -180,11 +182,6 @@ jobs:
       # Somewhere in the layers (powershell?)
       # the equals signs cause great confusion.
       run: go test ./... -bench . -benchtime 1x -run "^$"
-    - name: Tidy cache
-      shell: bash
-      run: |
-        find $(go env GOCACHE) -type f -mmin +90 -delete
-        find $(go env GOMODCACHE)/cache -type f -mmin +90 -delete
 
   privileged:
     runs-on: ubuntu-22.04
@@ -193,11 +190,11 @@ jobs:
       options: --privileged
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: chown
       run: chown -R $(id -u):$(id -g) $PWD
     - name: privileged tests
-      run: ./tool/go test ./util/linuxfw ./derp/xdp
+      run: ./tool/go test ./util/linuxfw
 
   vm:
     runs-on: ["self-hosted", "linux", "vm"]
@@ -205,19 +202,19 @@ jobs:
     if: github.repository == 'tailscale/tailscale'
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: Run VM tests
       run: ./tool/go test ./tstest/integration/vms -v -no-s3 -run-vm-tests -run=TestRunUbuntu2004
       env:
-        HOME: "/var/lib/ghrunner/home"
+        HOME: "/tmp"
         TMPDIR: "/tmp"
-        XDG_CACHE_HOME: "/var/lib/ghrunner/cache"
+        XDB_CACHE_HOME: "/var/lib/ghrunner/cache"
 
   race-build:
     runs-on: ubuntu-22.04
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: build all
       run: ./tool/go install -race ./cmd/...
     - name: build tests
@@ -257,13 +254,16 @@ jobs:
             goarch: amd64
           - goos: openbsd
             goarch: amd64
+          # Plan9 (disabled until 3p dependencies are fixed)
+          # - goos: plan9
+          #   goarch: amd64
 
     runs-on: ubuntu-22.04
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: Restore Cache
-      uses: actions/cache@d4323d4df104b026a6aa633fdb11d772146be0bf # v4.2.2
+      uses: actions/cache@v3
       with:
         # Note: unlike the other setups, this is only grabbing the mod download
         # cache, rather than the whole mod directory, as the download cache
@@ -292,76 +292,19 @@ jobs:
         GOOS: ${{ matrix.goos }}
         GOARCH: ${{ matrix.goarch }}
         CGO_ENABLED: "0"
-    - name: Tidy cache
-      shell: bash
-      run: |
-        find $(go env GOCACHE) -type f -mmin +90 -delete
-        find $(go env GOMODCACHE)/cache -type f -mmin +90 -delete
 
   ios: # similar to cross above, but iOS can't build most of the repo. So, just
        #make it build a few smoke packages.
     runs-on: ubuntu-22.04
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: build some
       run: ./tool/go build ./ipn/... ./wgengine/ ./types/... ./control/controlclient
       env:
         GOOS: ios
         GOARCH: arm64
 
-  crossmin: # cross-compile for platforms where we only check cmd/tailscale{,d}
-    strategy:
-      fail-fast: false # don't abort the entire matrix if one element fails
-      matrix:
-        include:
-          # Plan9
-          - goos: plan9
-            goarch: amd64
-          # AIX
-          - goos: aix
-            goarch: ppc64
-          # Solaris
-          - goos: solaris
-            goarch: amd64
-          # illumos
-          - goos: illumos
-            goarch: amd64
-
-    runs-on: ubuntu-22.04
-    steps:
-    - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
-    - name: Restore Cache
-      uses: actions/cache@d4323d4df104b026a6aa633fdb11d772146be0bf # v4.2.2
-      with:
-        # Note: unlike the other setups, this is only grabbing the mod download
-        # cache, rather than the whole mod directory, as the download cache
-        # contains zips that can be unpacked in parallel faster than they can be
-        # fetched and extracted by tar
-        path: |
-          ~/.cache/go-build
-          ~/go/pkg/mod/cache
-          ~\AppData\Local\go-build
-        # The -2- here should be incremented when the scheme of data to be
-        # cached changes (e.g. path above changes).
-        key: ${{ github.job }}-${{ runner.os }}-${{ matrix.goos }}-${{ matrix.goarch }}-go-2-${{ hashFiles('**/go.sum') }}-${{ github.run_id }}
-        restore-keys: |
-          ${{ github.job }}-${{ runner.os }}-${{ matrix.goos }}-${{ matrix.goarch }}-go-2-${{ hashFiles('**/go.sum') }}
-          ${{ github.job }}-${{ runner.os }}-${{ matrix.goos }}-${{ matrix.goarch }}-go-2-
-    - name: build core
-      run: ./tool/go build ./cmd/tailscale ./cmd/tailscaled
-      env:
-        GOOS: ${{ matrix.goos }}
-        GOARCH: ${{ matrix.goarch }}
-        GOARM: ${{ matrix.goarm }}
-        CGO_ENABLED: "0"
-    - name: Tidy cache
-      shell: bash
-      run: |
-        find $(go env GOCACHE) -type f -mmin +90 -delete
-        find $(go env GOMODCACHE)/cache -type f -mmin +90 -delete
-
   android:
     # similar to cross above, but android fails to build a few pieces of the
     # repo. We should fix those pieces, they're small, but as a stepping stone,
@@ -369,13 +312,13 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
       # Super minimal Android build that doesn't even use CGO and doesn't build everything that's needed
       # and is only arm64. But it's a smoke build: it's not meant to catch everything. But it'll catch
       # some Android breakages early.
       # TODO(bradfitz): better; see https://github.com/tailscale/tailscale/issues/4482
     - name: build some
-      run: ./tool/go install ./net/netns ./ipn/ipnlocal ./wgengine/magicsock/ ./wgengine/ ./wgengine/router/ ./wgengine/netstack ./util/dnsname/ ./ipn/ ./net/netmon ./wgengine/router/ ./tailcfg/ ./types/logger/ ./net/dns ./hostinfo ./version
+      run: ./tool/go install ./net/netns ./ipn/ipnlocal ./wgengine/magicsock/ ./wgengine/ ./wgengine/router/ ./wgengine/netstack ./util/dnsname/ ./ipn/ ./net/interfaces ./wgengine/router/ ./tailcfg/ ./types/logger/ ./net/dns ./hostinfo ./version
       env:
         GOOS: android
         GOARCH: arm64
@@ -384,9 +327,9 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: Restore Cache
-      uses: actions/cache@d4323d4df104b026a6aa633fdb11d772146be0bf # v4.2.2
+      uses: actions/cache@v3
       with:
         # Note: unlike the other setups, this is only grabbing the mod download
         # cache, rather than the whole mod directory, as the download cache
@@ -413,17 +356,12 @@ jobs:
       run: |
         ./tool/go run ./cmd/tsconnect --fast-compression build
         ./tool/go run ./cmd/tsconnect --fast-compression build-pkg
-    - name: Tidy cache
-      shell: bash
-      run: |
-        find $(go env GOCACHE) -type f -mmin +90 -delete
-        find $(go env GOMODCACHE)/cache -type f -mmin +90 -delete
 
   tailscale_go: # Subset of tests that depend on our custom Go toolchain.
     runs-on: ubuntu-22.04
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: test tailscale_go
       run: ./tool/go test -tags=tailscale_go,ts_enable_sockstats ./net/sockstats/...
 
@@ -480,35 +418,31 @@ jobs:
         fuzz-seconds: 300
         dry-run: false
         language: go
-    - name: Set artifacts_path in env (workaround for actions/upload-artifact#176)
-      if: steps.run.outcome != 'success' && steps.build.outcome == 'success'
-      run: |
-        echo "artifacts_path=$(realpath .)" >> $GITHUB_ENV
     - name: upload crash
-      uses: actions/upload-artifact@4cec3d8aa04e39d1a68397de0c4cd6fb9dce8ec1 # v4.6.1
+      uses: actions/upload-artifact@v3
       if: steps.run.outcome != 'success' && steps.build.outcome == 'success'
       with:
         name: artifacts
-        path: ${{ env.artifacts_path }}/out/artifacts
+        path: ./out/artifacts
 
   depaware:
     runs-on: ubuntu-22.04
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: check depaware
       run: |
         export PATH=$(./tool/go env GOROOT)/bin:$PATH
-        find . -name 'depaware.txt' | xargs -n1 dirname | xargs ./tool/go run github.com/tailscale/depaware --check --internal
+        find . -name 'depaware.txt' | xargs -n1 dirname | xargs ./tool/go run github.com/tailscale/depaware --check
 
   go_generate:
     runs-on: ubuntu-22.04
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: check that 'go generate' is clean
       run: |
-        pkgs=$(./tool/go list ./... | grep -Ev 'dnsfallback|k8s-operator|xdp')
+        pkgs=$(./tool/go list ./... | grep -Ev 'dnsfallback|k8s-operator')
         ./tool/go generate $pkgs
         echo
         echo
@@ -518,7 +452,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: check that 'go mod tidy' is clean
       run: |
         ./tool/go mod tidy
@@ -530,7 +464,7 @@ jobs:
     runs-on: ubuntu-22.04
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: check licenses
       run: ./scripts/check_license_headers.sh .
 
@@ -546,7 +480,7 @@ jobs:
             goarch: "386"
     steps:
     - name: checkout
-      uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      uses: actions/checkout@v4
     - name: install staticcheck
       run: GOBIN=~/.local/bin ./tool/go install honnef.co/go/tools/cmd/staticcheck
     - name: run staticcheck
@@ -587,10 +521,8 @@ jobs:
       # By having the job always run, but skipping its only step as needed, we
       # let the CI output collapse nicely in PRs.
       if: failure() && github.event_name == 'push'
-      uses: slackapi/slack-github-action@485a9d42d3a73031f12ec201c457e2162c45d02d # v2.0.0
+      uses: ruby/action-slack@v3.2.1
       with:
-        webhook: ${{ secrets.SLACK_WEBHOOK_URL }}
-        webhook-type: incoming-webhook
         payload: |
           {
             "attachments": [{
@@ -602,6 +534,8 @@ jobs:
               "color": "danger"
             }]
           }
+      env:
+        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
 
   check_mergeability:
     if: always()
@@ -624,6 +558,6 @@ jobs:
     steps:
     - name: Decide if change is okay to merge
       if: github.event_name != 'push'
-      uses: re-actors/alls-green@05ac9388f0aebcb5727afa17fcccfecd6f8ec5fe # v1.2.2
+      uses: re-actors/alls-green@release/v1
       with:
         jobs: ${{ toJSON(needs) }}

.github/workflows/update-flake.yml

@@ -21,22 +21,21 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@v4
 
       - name: Run update-flakes
         run: ./update-flake.sh
 
       - name: Get access token
-        uses: tibdex/github-app-token@3beb63f4bd073e61482598c45c71c1019b59b73a # v2.1.0
+        uses: tibdex/github-app-token@b62528385c34dbc9f38e5f4225ac829252d1ea92 # v1.8.0
         id: generate-token
         with:
           app_id: ${{ secrets.LICENSING_APP_ID }}
-          installation_retrieval_mode: "id"
-          installation_retrieval_payload: ${{ secrets.LICENSING_APP_INSTALLATION_ID }}
+          installation_id: ${{ secrets.LICENSING_APP_INSTALLATION_ID }}
           private_key: ${{ secrets.LICENSING_APP_PRIVATE_KEY }}
 
       - name: Send pull request
-        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e #v7.0.8
+        uses: peter-evans/create-pull-request@284f54f989303d2699d373481a0cfa13ad5a6666 #v5.0.1
         with:
           token: ${{ steps.generate-token.outputs.token }}
           author: Flakes Updater <noreply+flakes-updater@tailscale.com>

.github/workflows/update-webclient-prebuilt.yml

@@ -14,7 +14,7 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@v4
 
       - name: Run go get
         run: |
@@ -23,19 +23,18 @@ jobs:
           ./tool/go mod tidy
 
       - name: Get access token
-        uses: tibdex/github-app-token@3beb63f4bd073e61482598c45c71c1019b59b73a # v2.1.0
+        uses: tibdex/github-app-token@b62528385c34dbc9f38e5f4225ac829252d1ea92 # v1.8.0
         id: generate-token
         with:
           # TODO(will): this should use the code updater app rather than licensing.
           # It has the same permissions, so not a big deal, but still.
           app_id: ${{ secrets.LICENSING_APP_ID }}
-          installation_retrieval_mode: "id"
-          installation_retrieval_payload: ${{ secrets.LICENSING_APP_INSTALLATION_ID }}
+          installation_id: ${{ secrets.LICENSING_APP_INSTALLATION_ID }}
           private_key: ${{ secrets.LICENSING_APP_PRIVATE_KEY }}
 
       - name: Send pull request
         id: pull-request
-        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e #v7.0.8
+        uses: peter-evans/create-pull-request@284f54f989303d2699d373481a0cfa13ad5a6666 #v5.0.1
         with:
           token: ${{ steps.generate-token.outputs.token }}
           author: OSS Updater <noreply+oss-updater@tailscale.com>

.github/workflows/webclient.yml

@@ -24,7 +24,7 @@ jobs:
 
     steps:
       - name: Check out code
-        uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+        uses: actions/checkout@v4
       - name: Install deps
         run: ./tool/yarn --cwd client/web
       - name: Run lint

.gitignore

@@ -9,7 +9,6 @@
 
 cmd/tailscale/tailscale
 cmd/tailscaled/tailscaled
-ssh/tailssh/testcontainers/tailscaled
 
 # Test binary, built with `go test -c`
 *.test
@@ -43,9 +42,3 @@ client/web/build/assets
 
 /gocross
 /dist
-
-# Ignore xcode userstate and workspace data
-*.xcuserstate
-*.xcworkspacedata
-/tstest/tailmac/bin
-/tstest/tailmac/build

.golangci.yml

@@ -26,11 +26,16 @@ issues:
 
 # Per-linter settings are contained in this top-level key
 linters-settings:
+  # Enable all rules by default; we don't use invisible unicode runes.
+  bidichk:
+
   gofmt:
     rewrite-rules:
       - pattern: 'interface{}'
         replacement: 'any'
 
+  goimports:
+
   govet:
     # Matches what we use in corp as of 2023-12-07
     enable:
@@ -73,6 +78,8 @@ linters-settings:
           # analyzer doesn't support type declarations
           #- github.com/tailscale/tailscale/types/logger.Logf
 
+  misspell:
+
   revive:
     enable-all-rules: false
     ignore-generated-header: true

ALPINE.txt

@@ -1 +1 @@
-3.19
+3.18

Dockerfile

@@ -1,13 +1,17 @@
 # Copyright (c) Tailscale Inc & AUTHORS
 # SPDX-License-Identifier: BSD-3-Clause
 
-# Note that this Dockerfile is currently NOT used to build any of the published
-# Tailscale container images and may have drifted from the image build mechanism
-# we use.
-# Tailscale images are currently built using https://github.com/tailscale/mkctr,
-# and the build script can be found in ./build_docker.sh.
+############################################################################
 #
+# WARNING: Tailscale is not yet officially supported in container
+# environments, such as Docker and Kubernetes. Though it should work, we
+# don't regularly test it, and we know there are some feature limitations.
 #
+# See current bugs tagged "containers":
+#    https://github.com/tailscale/tailscale/labels/containers
+#
+############################################################################
+
 # This Dockerfile includes all the tailscale binaries.
 #
 # To build the Dockerfile:
@@ -27,7 +31,7 @@
 #     $ docker exec tailscaled tailscale status
 
 
-FROM golang:1.24-alpine AS build-env
+FROM golang:1.22-alpine AS build-env
 
 WORKDIR /go/src/tailscale
 
@@ -42,7 +46,7 @@ RUN go install \
     gvisor.dev/gvisor/pkg/tcpip/stack \
     golang.org/x/crypto/ssh \
     golang.org/x/crypto/acme \
-    github.com/coder/websocket \
+    nhooyr.io/websocket \
     github.com/mdlayher/netlink
 
 COPY . .
@@ -62,10 +66,8 @@ RUN GOARCH=$TARGETARCH go install -ldflags="\
       -X tailscale.com/version.gitCommitStamp=$VERSION_GIT_HASH" \
       -v ./cmd/tailscale ./cmd/tailscaled ./cmd/containerboot
 
-FROM alpine:3.19
+FROM alpine:3.18
 RUN apk add --no-cache ca-certificates iptables iproute2 ip6tables
-RUN rm /sbin/iptables && ln -s /sbin/iptables-legacy /sbin/iptables
-RUN rm /sbin/ip6tables && ln -s /sbin/ip6tables-legacy /sbin/ip6tables
 
 COPY --from=build-env /go/bin/* /usr/local/bin/
 # For compat with the previous run.sh, although ideally you should be

Dockerfile.base

@@ -1,12 +1,5 @@
 # Copyright (c) Tailscale Inc & AUTHORS
 # SPDX-License-Identifier: BSD-3-Clause
 
-FROM alpine:3.19
-RUN apk add --no-cache ca-certificates iptables iptables-legacy iproute2 ip6tables iputils
-# Alpine 3.19 replaces legacy iptables with nftables based implementation.  We
-# can't be certain that all hosts that run Tailscale containers currently
-# suppport nftables, so link back to legacy for backwards compatibility reasons.
-# TODO(irbekrm): add some way how to determine if we still run on nodes that
-# don't support nftables, so that we can eventually remove these symlinks.
-RUN rm /sbin/iptables && ln -s /sbin/iptables-legacy /sbin/iptables
-RUN rm /sbin/ip6tables && ln -s /sbin/ip6tables-legacy /sbin/ip6tables
+FROM alpine:3.18
+RUN apk add --no-cache ca-certificates iptables iproute2 ip6tables iputils

Makefile

@@ -1,5 +1,5 @@
 IMAGE_REPO ?= tailscale/tailscale
-SYNO_ARCH ?= "x86_64"
+SYNO_ARCH ?= "amd64"
 SYNO_DSM ?= "7"
 TAGS ?= "latest"
 
@@ -17,21 +17,19 @@ lint: ## Run golangci-lint
 updatedeps: ## Update depaware deps
 	# depaware (via x/tools/go/packages) shells back to "go", so make sure the "go"
 	# it finds in its $$PATH is the right one.
-	PATH="$$(./tool/go env GOROOT)/bin:$$PATH" ./tool/go run github.com/tailscale/depaware --update --internal \
+	PATH="$$(./tool/go env GOROOT)/bin:$$PATH" ./tool/go run github.com/tailscale/depaware --update \
 		tailscale.com/cmd/tailscaled \
 		tailscale.com/cmd/tailscale \
 		tailscale.com/cmd/derper \
-		tailscale.com/cmd/k8s-operator \
 		tailscale.com/cmd/stund
 
 depaware: ## Run depaware checks
 	# depaware (via x/tools/go/packages) shells back to "go", so make sure the "go"
 	# it finds in its $$PATH is the right one.
-	PATH="$$(./tool/go env GOROOT)/bin:$$PATH" ./tool/go run github.com/tailscale/depaware --check --internal \
+	PATH="$$(./tool/go env GOROOT)/bin:$$PATH" ./tool/go run github.com/tailscale/depaware --check \
 		tailscale.com/cmd/tailscaled \
 		tailscale.com/cmd/tailscale \
 		tailscale.com/cmd/derper \
-		tailscale.com/cmd/k8s-operator \
 		tailscale.com/cmd/stund
 
 buildwindows: ## Build tailscale CLI for windows/amd64
@@ -100,24 +98,7 @@ publishdevoperator: ## Build and publish k8s-operator image to location specifie
 	@test "${REPO}" != "ghcr.io/tailscale/tailscale" || (echo "REPO=... must not be ghcr.io/tailscale/tailscale" && exit 1)
 	@test "${REPO}" != "tailscale/k8s-operator" || (echo "REPO=... must not be tailscale/k8s-operator" && exit 1)
 	@test "${REPO}" != "ghcr.io/tailscale/k8s-operator" || (echo "REPO=... must not be ghcr.io/tailscale/k8s-operator" && exit 1)
-	TAGS="${TAGS}" REPOS=${REPO} PLATFORM=${PLATFORM} PUSH=true TARGET=k8s-operator ./build_docker.sh
-
-publishdevnameserver: ## Build and publish k8s-nameserver image to location specified by ${REPO}
-	@test -n "${REPO}" || (echo "REPO=... required; e.g. REPO=ghcr.io/${USER}/tailscale" && exit 1)
-	@test "${REPO}" != "tailscale/tailscale" || (echo "REPO=... must not be tailscale/tailscale" && exit 1)
-	@test "${REPO}" != "ghcr.io/tailscale/tailscale" || (echo "REPO=... must not be ghcr.io/tailscale/tailscale" && exit 1)
-	@test "${REPO}" != "tailscale/k8s-nameserver" || (echo "REPO=... must not be tailscale/k8s-nameserver" && exit 1)
-	@test "${REPO}" != "ghcr.io/tailscale/k8s-nameserver" || (echo "REPO=... must not be ghcr.io/tailscale/k8s-nameserver" && exit 1)
-	TAGS="${TAGS}" REPOS=${REPO} PLATFORM=${PLATFORM} PUSH=true TARGET=k8s-nameserver ./build_docker.sh
-
-.PHONY: sshintegrationtest
-sshintegrationtest: ## Run the SSH integration tests in various Docker containers
-	@GOOS=linux GOARCH=amd64 ./tool/go test -tags integrationtest -c ./ssh/tailssh -o ssh/tailssh/testcontainers/tailssh.test && \
-	GOOS=linux GOARCH=amd64 ./tool/go build -o ssh/tailssh/testcontainers/tailscaled ./cmd/tailscaled && \
-	echo "Testing on ubuntu:focal" && docker build --build-arg="BASE=ubuntu:focal" -t ssh-ubuntu-focal ssh/tailssh/testcontainers && \
-	echo "Testing on ubuntu:jammy" && docker build --build-arg="BASE=ubuntu:jammy" -t ssh-ubuntu-jammy ssh/tailssh/testcontainers && \
-	echo "Testing on ubuntu:noble" && docker build --build-arg="BASE=ubuntu:noble" -t ssh-ubuntu-noble ssh/tailssh/testcontainers && \
-	echo "Testing on alpine:latest" && docker build --build-arg="BASE=alpine:latest" -t ssh-alpine-latest ssh/tailssh/testcontainers
+	TAGS="${TAGS}" REPOS=${REPO} PLATFORM=${PLATFORM} PUSH=true TARGET=operator ./build_docker.sh
 
 help: ## Show this help
 	@echo "\nSpecify a command. The choices are:\n"

README.md

@@ -37,7 +37,7 @@ not open source.
 
 ## Building
 
-We always require the latest Go release, currently Go 1.23. (While we build
+We always require the latest Go release, currently Go 1.22. (While we build
 releases with our [Go fork](https://github.com/tailscale/go/), its use is not
 required.)
 
@@ -72,7 +72,7 @@ Origin](https://en.wikipedia.org/wiki/Developer_Certificate_of_Origin)
 `Signed-off-by` lines in commits.
 
 See `git log` for our commit message style. It's basically the same as
-[Go's style](https://go.dev/wiki/CommitMessage).
+[Go's style](https://github.com/golang/go/wiki/CommitMessage).
 
 ## About Us
 

VERSION.txt

@@ -1 +1 @@
-1.83.0
+1.61.0

appc/appconnector.go

@@ -11,63 +11,20 @@ package appc
 
 import (
 	"context"
-	"fmt"
 	"net/netip"
 	"slices"
 	"strings"
 	"sync"
-	"time"
 
+	xmaps "golang.org/x/exp/maps"
 	"golang.org/x/net/dns/dnsmessage"
 	"tailscale.com/types/logger"
 	"tailscale.com/types/views"
-	"tailscale.com/util/clientmetric"
 	"tailscale.com/util/dnsname"
 	"tailscale.com/util/execqueue"
 	"tailscale.com/util/mak"
-	"tailscale.com/util/slicesx"
 )
 
-// rateLogger responds to calls to update by adding a count for the current period and
-// calling the callback if any previous period has finished since update was last called
-type rateLogger struct {
-	interval    time.Duration
-	start       time.Time
-	periodStart time.Time
-	periodCount int64
-	now         func() time.Time
-	callback    func(int64, time.Time, int64)
-}
-
-func (rl *rateLogger) currentIntervalStart(now time.Time) time.Time {
-	millisSince := now.Sub(rl.start).Milliseconds() % rl.interval.Milliseconds()
-	return now.Add(-(time.Duration(millisSince)) * time.Millisecond)
-}
-
-func (rl *rateLogger) update(numRoutes int64) {
-	now := rl.now()
-	periodEnd := rl.periodStart.Add(rl.interval)
-	if periodEnd.Before(now) {
-		if rl.periodCount != 0 {
-			rl.callback(rl.periodCount, rl.periodStart, numRoutes)
-		}
-		rl.periodCount = 0
-		rl.periodStart = rl.currentIntervalStart(now)
-	}
-	rl.periodCount++
-}
-
-func newRateLogger(now func() time.Time, interval time.Duration, callback func(int64, time.Time, int64)) *rateLogger {
-	nowTime := now()
-	return &rateLogger{
-		callback:    callback,
-		now:         now,
-		interval:    interval,
-		start:       nowTime,
-		periodStart: nowTime,
-	}
-}
-
 // RouteAdvertiser is an interface that allows the AppConnector to advertise
 // newly discovered routes that need to be served through the AppConnector.
 type RouteAdvertiser interface {
@@ -79,55 +36,6 @@ type RouteAdvertiser interface {
 	UnadvertiseRoute(...netip.Prefix) error
 }
 
-var (
-	metricStoreRoutesRateBuckets = []int64{1, 2, 3, 4, 5, 10, 100, 1000}
-	metricStoreRoutesNBuckets    = []int64{1, 2, 3, 4, 5, 10, 100, 1000, 10000}
-	metricStoreRoutesRate        []*clientmetric.Metric
-	metricStoreRoutesN           []*clientmetric.Metric
-)
-
-func initMetricStoreRoutes() {
-	for _, n := range metricStoreRoutesRateBuckets {
-		metricStoreRoutesRate = append(metricStoreRoutesRate, clientmetric.NewCounter(fmt.Sprintf("appc_store_routes_rate_%d", n)))
-	}
-	metricStoreRoutesRate = append(metricStoreRoutesRate, clientmetric.NewCounter("appc_store_routes_rate_over"))
-	for _, n := range metricStoreRoutesNBuckets {
-		metricStoreRoutesN = append(metricStoreRoutesN, clientmetric.NewCounter(fmt.Sprintf("appc_store_routes_n_routes_%d", n)))
-	}
-	metricStoreRoutesN = append(metricStoreRoutesN, clientmetric.NewCounter("appc_store_routes_n_routes_over"))
-}
-
-func recordMetric(val int64, buckets []int64, metrics []*clientmetric.Metric) {
-	if len(buckets) < 1 {
-		return
-	}
-	// finds the first bucket where val <=, or len(buckets) if none match
-	// for bucket values of 1, 10, 100; 0-1 goes to [0], 2-10 goes to [1], 11-100 goes to [2], 101+ goes to [3]
-	bucket, _ := slices.BinarySearch(buckets, val)
-	metrics[bucket].Add(1)
-}
-
-func metricStoreRoutes(rate, nRoutes int64) {
-	if len(metricStoreRoutesRate) == 0 {
-		initMetricStoreRoutes()
-	}
-	recordMetric(rate, metricStoreRoutesRateBuckets, metricStoreRoutesRate)
-	recordMetric(nRoutes, metricStoreRoutesNBuckets, metricStoreRoutesN)
-}
-
-// RouteInfo is a data structure used to persist the in memory state of an AppConnector
-// so that we can know, even after a restart, which routes came from ACLs and which were
-// learned from domains.
-type RouteInfo struct {
-	// Control is the routes from the 'routes' section of an app connector acl.
-	Control []netip.Prefix `json:",omitempty"`
-	// Domains are the routes discovered by observing DNS lookups for configured domains.
-	Domains map[string][]netip.Addr `json:",omitempty"`
-	// Wildcards are the configured DNS lookup domains to observe. When a DNS query matches Wildcards,
-	// its result is added to Domains.
-	Wildcards []string `json:",omitempty"`
-}
-
 // AppConnector is an implementation of an AppConnector that performs
 // its function as a subsystem inside of a tailscale node. At the control plane
 // side App Connector routing is configured in terms of domains rather than IP
@@ -141,9 +49,6 @@ type AppConnector struct {
 	logf            logger.Logf
 	routeAdvertiser RouteAdvertiser
 
-	// storeRoutesFunc will be called to persist routes if it is not nil.
-	storeRoutesFunc func(*RouteInfo) error
-
 	// mu guards the fields that follow
 	mu sync.Mutex
 
@@ -159,68 +64,14 @@ type AppConnector struct {
 
 	// queue provides ordering for update operations
 	queue execqueue.ExecQueue
-
-	writeRateMinute *rateLogger
-	writeRateDay    *rateLogger
 }
 
 // NewAppConnector creates a new AppConnector.
-func NewAppConnector(logf logger.Logf, routeAdvertiser RouteAdvertiser, routeInfo *RouteInfo, storeRoutesFunc func(*RouteInfo) error) *AppConnector {
-	ac := &AppConnector{
+func NewAppConnector(logf logger.Logf, routeAdvertiser RouteAdvertiser) *AppConnector {
+	return &AppConnector{
 		logf:            logger.WithPrefix(logf, "appc: "),
 		routeAdvertiser: routeAdvertiser,
-		storeRoutesFunc: storeRoutesFunc,
 	}
-	if routeInfo != nil {
-		ac.domains = routeInfo.Domains
-		ac.wildcards = routeInfo.Wildcards
-		ac.controlRoutes = routeInfo.Control
-	}
-	ac.writeRateMinute = newRateLogger(time.Now, time.Minute, func(c int64, s time.Time, l int64) {
-		ac.logf("routeInfo write rate: %d in minute starting at %v (%d routes)", c, s, l)
-		metricStoreRoutes(c, l)
-	})
-	ac.writeRateDay = newRateLogger(time.Now, 24*time.Hour, func(c int64, s time.Time, l int64) {
-		ac.logf("routeInfo write rate: %d in 24 hours starting at %v (%d routes)", c, s, l)
-	})
-	return ac
-}
-
-// ShouldStoreRoutes returns true if the appconnector was created with the controlknob on
-// and is storing its discovered routes persistently.
-func (e *AppConnector) ShouldStoreRoutes() bool {
-	return e.storeRoutesFunc != nil
-}
-
-// storeRoutesLocked takes the current state of the AppConnector and persists it
-func (e *AppConnector) storeRoutesLocked() error {
-	if !e.ShouldStoreRoutes() {
-		return nil
-	}
-
-	// log write rate and write size
-	numRoutes := int64(len(e.controlRoutes))
-	for _, rs := range e.domains {
-		numRoutes += int64(len(rs))
-	}
-	e.writeRateMinute.update(numRoutes)
-	e.writeRateDay.update(numRoutes)
-
-	return e.storeRoutesFunc(&RouteInfo{
-		Control:   e.controlRoutes,
-		Domains:   e.domains,
-		Wildcards: e.wildcards,
-	})
-}
-
-// ClearRoutes removes all route state from the AppConnector.
-func (e *AppConnector) ClearRoutes() error {
-	e.mu.Lock()
-	defer e.mu.Unlock()
-	e.controlRoutes = nil
-	e.domains = nil
-	e.wildcards = nil
-	return e.storeRoutesLocked()
 }
 
 // UpdateDomainsAndRoutes starts an asynchronous update of the configuration
@@ -274,29 +125,11 @@ func (e *AppConnector) updateDomains(domains []string) {
 		for _, wc := range e.wildcards {
 			if dnsname.HasSuffix(d, wc) {
 				e.domains[d] = addrs
-				delete(oldDomains, d)
 				break
 			}
 		}
 	}
-
-	// Everything left in oldDomains is a domain we're no longer tracking
-	// and if we are storing route info we can unadvertise the routes
-	if e.ShouldStoreRoutes() {
-		toRemove := []netip.Prefix{}
-		for _, addrs := range oldDomains {
-			for _, a := range addrs {
-				toRemove = append(toRemove, netip.PrefixFrom(a, a.BitLen()))
-			}
-		}
-		e.queue.Add(func() {
-			if err := e.routeAdvertiser.UnadvertiseRoute(toRemove...); err != nil {
-				e.logf("failed to unadvertise routes on domain removal: %v: %v: %v", slicesx.MapKeys(oldDomains), toRemove, err)
-			}
-		})
-	}
-
-	e.logf("handling domains: %v and wildcards: %v", slicesx.MapKeys(e.domains), e.wildcards)
+	e.logf("handling domains: %v and wildcards: %v", xmaps.Keys(e.domains), e.wildcards)
 }
 
 // updateRoutes merges the supplied routes into the currently configured routes. The routes supplied
@@ -312,16 +145,13 @@ func (e *AppConnector) updateRoutes(routes []netip.Prefix) {
 		return
 	}
 
-	var toRemove []netip.Prefix
-
-	// If we're storing routes and know e.controlRoutes is a good
-	// representation of what should be in AdvertisedRoutes we can stop
-	// advertising routes that used to be in e.controlRoutes but are not
-	// in routes.
-	if e.ShouldStoreRoutes() {
-		toRemove = routesWithout(e.controlRoutes, routes)
+	if err := e.routeAdvertiser.AdvertiseRoute(routes...); err != nil {
+		e.logf("failed to advertise routes: %v: %v", routes, err)
+		return
 	}
 
+	var toRemove []netip.Prefix
+
 nextRoute:
 	for _, r := range routes {
 		for _, addr := range e.domains {
@@ -335,19 +165,11 @@ nextRoute:
 		}
 	}
 
-	e.queue.Add(func() {
-		if err := e.routeAdvertiser.AdvertiseRoute(routes...); err != nil {
-			e.logf("failed to advertise routes: %v: %v", routes, err)
-		}
-		if err := e.routeAdvertiser.UnadvertiseRoute(toRemove...); err != nil {
-			e.logf("failed to unadvertise routes: %v: %v", toRemove, err)
-		}
-	})
+	if err := e.routeAdvertiser.UnadvertiseRoute(toRemove...); err != nil {
+		e.logf("failed to unadvertise routes: %v: %v", toRemove, err)
+	}
 
 	e.controlRoutes = routes
-	if err := e.storeRoutesLocked(); err != nil {
-		e.logf("failed to store route info: %v", err)
-	}
 }
 
 // Domains returns the currently configured domain list.
@@ -355,7 +177,7 @@ func (e *AppConnector) Domains() views.Slice[string] {
 	e.mu.Lock()
 	defer e.mu.Unlock()
 
-	return views.SliceOf(slicesx.MapKeys(e.domains))
+	return views.SliceOf(xmaps.Keys(e.domains))
 }
 
 // DomainRoutes returns a map of domains to resolved IP
@@ -376,13 +198,13 @@ func (e *AppConnector) DomainRoutes() map[string][]netip.Addr {
 // response is being returned over the PeerAPI. The response is parsed and
 // matched against the configured domains, if matched the routeAdvertiser is
 // advised to advertise the discovered route.
-func (e *AppConnector) ObserveDNSResponse(res []byte) error {
+func (e *AppConnector) ObserveDNSResponse(res []byte) {
 	var p dnsmessage.Parser
 	if _, err := p.Start(res); err != nil {
-		return err
+		return
 	}
 	if err := p.SkipAllQuestions(); err != nil {
-		return err
+		return
 	}
 
 	// cnameChain tracks a chain of CNAMEs for a given query in order to reverse
@@ -401,12 +223,12 @@ func (e *AppConnector) ObserveDNSResponse(res []byte) error {
 			break
 		}
 		if err != nil {
-			return err
+			return
 		}
 
 		if h.Class != dnsmessage.ClassINET {
 			if err := p.SkipAnswer(); err != nil {
-				return err
+				return
 			}
 			continue
 		}
@@ -415,7 +237,7 @@ func (e *AppConnector) ObserveDNSResponse(res []byte) error {
 		case dnsmessage.TypeCNAME, dnsmessage.TypeA, dnsmessage.TypeAAAA:
 		default:
 			if err := p.SkipAnswer(); err != nil {
-				return err
+				return
 			}
 			continue
 
@@ -429,7 +251,7 @@ func (e *AppConnector) ObserveDNSResponse(res []byte) error {
 		if h.Type == dnsmessage.TypeCNAME {
 			res, err := p.CNAMEResource()
 			if err != nil {
-				return err
+				return
 			}
 			cname := strings.TrimSuffix(strings.ToLower(res.CNAME.String()), ".")
 			if len(cname) == 0 {
@@ -443,20 +265,20 @@ func (e *AppConnector) ObserveDNSResponse(res []byte) error {
 		case dnsmessage.TypeA:
 			r, err := p.AResource()
 			if err != nil {
-				return err
+				return
 			}
 			addr := netip.AddrFrom4(r.A)
 			mak.Set(&addressRecords, domain, append(addressRecords[domain], addr))
 		case dnsmessage.TypeAAAA:
 			r, err := p.AAAAResource()
 			if err != nil {
-				return err
+				return
 			}
 			addr := netip.AddrFrom16(r.AAAA)
 			mak.Set(&addressRecords, domain, append(addressRecords[domain], addr))
 		default:
 			if err := p.SkipAnswer(); err != nil {
-				return err
+				return
 			}
 			continue
 		}
@@ -482,12 +304,9 @@ func (e *AppConnector) ObserveDNSResponse(res []byte) error {
 			}
 		}
 
-		if len(toAdvertise) > 0 {
-			e.logf("[v2] observed new routes for %s: %s", domain, toAdvertise)
-			e.scheduleAdvertisement(domain, toAdvertise...)
-		}
+		e.logf("[v2] observed new routes for %s: %s", domain, toAdvertise)
+		e.scheduleAdvertisement(domain, toAdvertise...)
 	}
-	return nil
 }
 
 // starting from the given domain that resolved to an address, find it, or any
@@ -561,9 +380,6 @@ func (e *AppConnector) scheduleAdvertisement(domain string, routes ...netip.Pref
 				e.logf("[v2] advertised route for %v: %v", domain, addr)
 			}
 		}
-		if err := e.storeRoutesLocked(); err != nil {
-			e.logf("failed to store route info: %v", err)
-		}
 	})
 }
 
@@ -584,15 +400,3 @@ func (e *AppConnector) addDomainAddrLocked(domain string, addr netip.Addr) {
 func compareAddr(l, r netip.Addr) int {
 	return l.Compare(r)
 }
-
-// routesWithout returns a without b where a and b
-// are unsorted slices of netip.Prefix
-func routesWithout(a, b []netip.Prefix) []netip.Prefix {
-	m := make(map[netip.Prefix]bool, len(b))
-	for _, p := range b {
-		m[p] = true
-	}
-	return slicesx.Filter(make([]netip.Prefix, 0, len(a)), a, func(p netip.Prefix) bool {
-		return !m[p]
-	})
-}

appc/appconnector_test.go

@@ -8,276 +8,203 @@ import (
 	"net/netip"
 	"reflect"
 	"slices"
-	"sync/atomic"
 	"testing"
-	"time"
 
+	xmaps "golang.org/x/exp/maps"
 	"golang.org/x/net/dns/dnsmessage"
 	"tailscale.com/appc/appctest"
-	"tailscale.com/tstest"
-	"tailscale.com/util/clientmetric"
 	"tailscale.com/util/mak"
 	"tailscale.com/util/must"
-	"tailscale.com/util/slicesx"
 )
 
-func fakeStoreRoutes(*RouteInfo) error { return nil }
-
 func TestUpdateDomains(t *testing.T) {
-	for _, shouldStore := range []bool{false, true} {
-		ctx := context.Background()
-		var a *AppConnector
-		if shouldStore {
-			a = NewAppConnector(t.Logf, &appctest.RouteCollector{}, &RouteInfo{}, fakeStoreRoutes)
-		} else {
-			a = NewAppConnector(t.Logf, &appctest.RouteCollector{}, nil, nil)
-		}
-		a.UpdateDomains([]string{"example.com"})
+	ctx := context.Background()
+	a := NewAppConnector(t.Logf, nil)
+	a.UpdateDomains([]string{"example.com"})
 
-		a.Wait(ctx)
-		if got, want := a.Domains().AsSlice(), []string{"example.com"}; !slices.Equal(got, want) {
-			t.Errorf("got %v; want %v", got, want)
-		}
+	a.Wait(ctx)
+	if got, want := a.Domains().AsSlice(), []string{"example.com"}; !slices.Equal(got, want) {
+		t.Errorf("got %v; want %v", got, want)
+	}
 
-		addr := netip.MustParseAddr("192.0.0.8")
-		a.domains["example.com"] = append(a.domains["example.com"], addr)
-		a.UpdateDomains([]string{"example.com"})
-		a.Wait(ctx)
+	addr := netip.MustParseAddr("192.0.0.8")
+	a.domains["example.com"] = append(a.domains["example.com"], addr)
+	a.UpdateDomains([]string{"example.com"})
+	a.Wait(ctx)
 
-		if got, want := a.domains["example.com"], []netip.Addr{addr}; !slices.Equal(got, want) {
-			t.Errorf("got %v; want %v", got, want)
-		}
+	if got, want := a.domains["example.com"], []netip.Addr{addr}; !slices.Equal(got, want) {
+		t.Errorf("got %v; want %v", got, want)
+	}
 
-		// domains are explicitly downcased on set.
-		a.UpdateDomains([]string{"UP.EXAMPLE.COM"})
-		a.Wait(ctx)
-		if got, want := slicesx.MapKeys(a.domains), []string{"up.example.com"}; !slices.Equal(got, want) {
-			t.Errorf("got %v; want %v", got, want)
-		}
+	// domains are explicitly downcased on set.
+	a.UpdateDomains([]string{"UP.EXAMPLE.COM"})
+	a.Wait(ctx)
+	if got, want := xmaps.Keys(a.domains), []string{"up.example.com"}; !slices.Equal(got, want) {
+		t.Errorf("got %v; want %v", got, want)
 	}
 }
 
 func TestUpdateRoutes(t *testing.T) {
-	for _, shouldStore := range []bool{false, true} {
-		ctx := context.Background()
-		rc := &appctest.RouteCollector{}
-		var a *AppConnector
-		if shouldStore {
-			a = NewAppConnector(t.Logf, rc, &RouteInfo{}, fakeStoreRoutes)
-		} else {
-			a = NewAppConnector(t.Logf, rc, nil, nil)
-		}
-		a.updateDomains([]string{"*.example.com"})
+	ctx := context.Background()
+	rc := &appctest.RouteCollector{}
+	a := NewAppConnector(t.Logf, rc)
+	a.updateDomains([]string{"*.example.com"})
 
-		// This route should be collapsed into the range
-		if err := a.ObserveDNSResponse(dnsResponse("a.example.com.", "192.0.2.1")); err != nil {
-			t.Errorf("ObserveDNSResponse: %v", err)
-		}
-		a.Wait(ctx)
+	// This route should be collapsed into the range
+	a.ObserveDNSResponse(dnsResponse("a.example.com.", "192.0.2.1"))
+	a.Wait(ctx)
 
-		if !slices.Equal(rc.Routes(), []netip.Prefix{netip.MustParsePrefix("192.0.2.1/32")}) {
-			t.Fatalf("got %v, want %v", rc.Routes(), []netip.Prefix{netip.MustParsePrefix("192.0.2.1/32")})
-		}
+	if !slices.Equal(rc.Routes(), []netip.Prefix{netip.MustParsePrefix("192.0.2.1/32")}) {
+		t.Fatalf("got %v, want %v", rc.Routes(), []netip.Prefix{netip.MustParsePrefix("192.0.2.1/32")})
+	}
 
-		// This route should not be collapsed or removed
-		if err := a.ObserveDNSResponse(dnsResponse("b.example.com.", "192.0.0.1")); err != nil {
-			t.Errorf("ObserveDNSResponse: %v", err)
-		}
-		a.Wait(ctx)
+	// This route should not be collapsed or removed
+	a.ObserveDNSResponse(dnsResponse("b.example.com.", "192.0.0.1"))
+	a.Wait(ctx)
 
-		routes := []netip.Prefix{netip.MustParsePrefix("192.0.2.0/24"), netip.MustParsePrefix("192.0.0.1/32")}
-		a.updateRoutes(routes)
-		a.Wait(ctx)
+	routes := []netip.Prefix{netip.MustParsePrefix("192.0.2.0/24"), netip.MustParsePrefix("192.0.0.1/32")}
+	a.updateRoutes(routes)
 
-		slices.SortFunc(rc.Routes(), prefixCompare)
-		rc.SetRoutes(slices.Compact(rc.Routes()))
-		slices.SortFunc(routes, prefixCompare)
+	slices.SortFunc(rc.Routes(), prefixCompare)
+	rc.SetRoutes(slices.Compact(rc.Routes()))
+	slices.SortFunc(routes, prefixCompare)
 
-		// Ensure that the non-matching /32 is preserved, even though it's in the domains table.
-		if !slices.EqualFunc(routes, rc.Routes(), prefixEqual) {
-			t.Errorf("added routes: got %v, want %v", rc.Routes(), routes)
-		}
+	// Ensure that the non-matching /32 is preserved, even though it's in the domains table.
+	if !slices.EqualFunc(routes, rc.Routes(), prefixEqual) {
+		t.Errorf("added routes: got %v, want %v", rc.Routes(), routes)
+	}
 
-		// Ensure that the contained /32 is removed, replaced by the /24.
-		wantRemoved := []netip.Prefix{netip.MustParsePrefix("192.0.2.1/32")}
-		if !slices.EqualFunc(rc.RemovedRoutes(), wantRemoved, prefixEqual) {
-			t.Fatalf("unexpected removed routes: %v", rc.RemovedRoutes())
-		}
+	// Ensure that the contained /32 is removed, replaced by the /24.
+	wantRemoved := []netip.Prefix{netip.MustParsePrefix("192.0.2.1/32")}
+	if !slices.EqualFunc(rc.RemovedRoutes(), wantRemoved, prefixEqual) {
+		t.Fatalf("unexpected removed routes: %v", rc.RemovedRoutes())
 	}
 }
 
 func TestUpdateRoutesUnadvertisesContainedRoutes(t *testing.T) {
-	ctx := context.Background()
-	for _, shouldStore := range []bool{false, true} {
-		rc := &appctest.RouteCollector{}
-		var a *AppConnector
-		if shouldStore {
-			a = NewAppConnector(t.Logf, rc, &RouteInfo{}, fakeStoreRoutes)
-		} else {
-			a = NewAppConnector(t.Logf, rc, nil, nil)
-		}
-		mak.Set(&a.domains, "example.com", []netip.Addr{netip.MustParseAddr("192.0.2.1")})
-		rc.SetRoutes([]netip.Prefix{netip.MustParsePrefix("192.0.2.1/32")})
-		routes := []netip.Prefix{netip.MustParsePrefix("192.0.2.0/24")}
-		a.updateRoutes(routes)
-		a.Wait(ctx)
+	rc := &appctest.RouteCollector{}
+	a := NewAppConnector(t.Logf, rc)
+	mak.Set(&a.domains, "example.com", []netip.Addr{netip.MustParseAddr("192.0.2.1")})
+	rc.SetRoutes([]netip.Prefix{netip.MustParsePrefix("192.0.2.1/32")})
+	routes := []netip.Prefix{netip.MustParsePrefix("192.0.2.0/24")}
+	a.updateRoutes(routes)
 
-		if !slices.EqualFunc(routes, rc.Routes(), prefixEqual) {
-			t.Fatalf("got %v, want %v", rc.Routes(), routes)
-		}
+	if !slices.EqualFunc(routes, rc.Routes(), prefixEqual) {
+		t.Fatalf("got %v, want %v", rc.Routes(), routes)
 	}
 }
 
 func TestDomainRoutes(t *testing.T) {
-	for _, shouldStore := range []bool{false, true} {
-		rc := &appctest.RouteCollector{}
-		var a *AppConnector
-		if shouldStore {
-			a = NewAppConnector(t.Logf, rc, &RouteInfo{}, fakeStoreRoutes)
-		} else {
-			a = NewAppConnector(t.Logf, rc, nil, nil)
-		}
-		a.updateDomains([]string{"example.com"})
-		if err := a.ObserveDNSResponse(dnsResponse("example.com.", "192.0.0.8")); err != nil {
-			t.Errorf("ObserveDNSResponse: %v", err)
-		}
-		a.Wait(context.Background())
+	rc := &appctest.RouteCollector{}
+	a := NewAppConnector(t.Logf, rc)
+	a.updateDomains([]string{"example.com"})
+	a.ObserveDNSResponse(dnsResponse("example.com.", "192.0.0.8"))
+	a.Wait(context.Background())
 
-		want := map[string][]netip.Addr{
-			"example.com": {netip.MustParseAddr("192.0.0.8")},
-		}
+	want := map[string][]netip.Addr{
+		"example.com": {netip.MustParseAddr("192.0.0.8")},
+	}
 
-		if got := a.DomainRoutes(); !reflect.DeepEqual(got, want) {
-			t.Fatalf("DomainRoutes: got %v, want %v", got, want)
-		}
+	if got := a.DomainRoutes(); !reflect.DeepEqual(got, want) {
+		t.Fatalf("DomainRoutes: got %v, want %v", got, want)
 	}
 }
 
 func TestObserveDNSResponse(t *testing.T) {
-	for _, shouldStore := range []bool{false, true} {
-		ctx := context.Background()
-		rc := &appctest.RouteCollector{}
-		var a *AppConnector
-		if shouldStore {
-			a = NewAppConnector(t.Logf, rc, &RouteInfo{}, fakeStoreRoutes)
-		} else {
-			a = NewAppConnector(t.Logf, rc, nil, nil)
-		}
+	ctx := context.Background()
+	rc := &appctest.RouteCollector{}
+	a := NewAppConnector(t.Logf, rc)
 
-		// a has no domains configured, so it should not advertise any routes
-		if err := a.ObserveDNSResponse(dnsResponse("example.com.", "192.0.0.8")); err != nil {
-			t.Errorf("ObserveDNSResponse: %v", err)
-		}
-		if got, want := rc.Routes(), ([]netip.Prefix)(nil); !slices.Equal(got, want) {
-			t.Errorf("got %v; want %v", got, want)
-		}
+	// a has no domains configured, so it should not advertise any routes
+	a.ObserveDNSResponse(dnsResponse("example.com.", "192.0.0.8"))
+	if got, want := rc.Routes(), ([]netip.Prefix)(nil); !slices.Equal(got, want) {
+		t.Errorf("got %v; want %v", got, want)
+	}
 
-		wantRoutes := []netip.Prefix{netip.MustParsePrefix("192.0.0.8/32")}
+	wantRoutes := []netip.Prefix{netip.MustParsePrefix("192.0.0.8/32")}
 
-		a.updateDomains([]string{"example.com"})
-		if err := a.ObserveDNSResponse(dnsResponse("example.com.", "192.0.0.8")); err != nil {
-			t.Errorf("ObserveDNSResponse: %v", err)
-		}
-		a.Wait(ctx)
-		if got, want := rc.Routes(), wantRoutes; !slices.Equal(got, want) {
-			t.Errorf("got %v; want %v", got, want)
-		}
+	a.updateDomains([]string{"example.com"})
+	a.ObserveDNSResponse(dnsResponse("example.com.", "192.0.0.8"))
+	a.Wait(ctx)
+	if got, want := rc.Routes(), wantRoutes; !slices.Equal(got, want) {
+		t.Errorf("got %v; want %v", got, want)
+	}
 
-		// a CNAME record chain should result in a route being added if the chain
-		// matches a routed domain.
-		a.updateDomains([]string{"www.example.com", "example.com"})
-		if err := a.ObserveDNSResponse(dnsCNAMEResponse("192.0.0.9", "www.example.com.", "chain.example.com.", "example.com.")); err != nil {
-			t.Errorf("ObserveDNSResponse: %v", err)
-		}
-		a.Wait(ctx)
-		wantRoutes = append(wantRoutes, netip.MustParsePrefix("192.0.0.9/32"))
-		if got, want := rc.Routes(), wantRoutes; !slices.Equal(got, want) {
-			t.Errorf("got %v; want %v", got, want)
-		}
+	// a CNAME record chain should result in a route being added if the chain
+	// matches a routed domain.
+	a.updateDomains([]string{"www.example.com", "example.com"})
+	a.ObserveDNSResponse(dnsCNAMEResponse("192.0.0.9", "www.example.com.", "chain.example.com.", "example.com."))
+	a.Wait(ctx)
+	wantRoutes = append(wantRoutes, netip.MustParsePrefix("192.0.0.9/32"))
+	if got, want := rc.Routes(), wantRoutes; !slices.Equal(got, want) {
+		t.Errorf("got %v; want %v", got, want)
+	}
 
-		// a CNAME record chain should result in a route being added if the chain
-		// even if only found in the middle of the chain
-		if err := a.ObserveDNSResponse(dnsCNAMEResponse("192.0.0.10", "outside.example.org.", "www.example.com.", "example.org.")); err != nil {
-			t.Errorf("ObserveDNSResponse: %v", err)
-		}
-		a.Wait(ctx)
-		wantRoutes = append(wantRoutes, netip.MustParsePrefix("192.0.0.10/32"))
-		if got, want := rc.Routes(), wantRoutes; !slices.Equal(got, want) {
-			t.Errorf("got %v; want %v", got, want)
-		}
+	// a CNAME record chain should result in a route being added if the chain
+	// even if only found in the middle of the chain
+	a.ObserveDNSResponse(dnsCNAMEResponse("192.0.0.10", "outside.example.org.", "www.example.com.", "example.org."))
+	a.Wait(ctx)
+	wantRoutes = append(wantRoutes, netip.MustParsePrefix("192.0.0.10/32"))
+	if got, want := rc.Routes(), wantRoutes; !slices.Equal(got, want) {
+		t.Errorf("got %v; want %v", got, want)
+	}
 
-		wantRoutes = append(wantRoutes, netip.MustParsePrefix("2001:db8::1/128"))
+	wantRoutes = append(wantRoutes, netip.MustParsePrefix("2001:db8::1/128"))
 
-		if err := a.ObserveDNSResponse(dnsResponse("example.com.", "2001:db8::1")); err != nil {
-			t.Errorf("ObserveDNSResponse: %v", err)
-		}
-		a.Wait(ctx)
-		if got, want := rc.Routes(), wantRoutes; !slices.Equal(got, want) {
-			t.Errorf("got %v; want %v", got, want)
-		}
+	a.ObserveDNSResponse(dnsResponse("example.com.", "2001:db8::1"))
+	a.Wait(ctx)
+	if got, want := rc.Routes(), wantRoutes; !slices.Equal(got, want) {
+		t.Errorf("got %v; want %v", got, want)
+	}
 
-		// don't re-advertise routes that have already been advertised
-		if err := a.ObserveDNSResponse(dnsResponse("example.com.", "2001:db8::1")); err != nil {
-			t.Errorf("ObserveDNSResponse: %v", err)
-		}
-		a.Wait(ctx)
-		if !slices.Equal(rc.Routes(), wantRoutes) {
-			t.Errorf("rc.Routes(): got %v; want %v", rc.Routes(), wantRoutes)
-		}
+	// don't re-advertise routes that have already been advertised
+	a.ObserveDNSResponse(dnsResponse("example.com.", "2001:db8::1"))
+	a.Wait(ctx)
+	if !slices.Equal(rc.Routes(), wantRoutes) {
+		t.Errorf("rc.Routes(): got %v; want %v", rc.Routes(), wantRoutes)
+	}
 
-		// don't advertise addresses that are already in a control provided route
-		pfx := netip.MustParsePrefix("192.0.2.0/24")
-		a.updateRoutes([]netip.Prefix{pfx})
-		wantRoutes = append(wantRoutes, pfx)
-		if err := a.ObserveDNSResponse(dnsResponse("example.com.", "192.0.2.1")); err != nil {
-			t.Errorf("ObserveDNSResponse: %v", err)
-		}
-		a.Wait(ctx)
-		if !slices.Equal(rc.Routes(), wantRoutes) {
-			t.Errorf("rc.Routes(): got %v; want %v", rc.Routes(), wantRoutes)
-		}
-		if !slices.Contains(a.domains["example.com"], netip.MustParseAddr("192.0.2.1")) {
-			t.Errorf("missing %v from %v", "192.0.2.1", a.domains["exmaple.com"])
-		}
+	// don't advertise addresses that are already in a control provided route
+	pfx := netip.MustParsePrefix("192.0.2.0/24")
+	a.updateRoutes([]netip.Prefix{pfx})
+	wantRoutes = append(wantRoutes, pfx)
+	a.ObserveDNSResponse(dnsResponse("example.com.", "192.0.2.1"))
+	a.Wait(ctx)
+	if !slices.Equal(rc.Routes(), wantRoutes) {
+		t.Errorf("rc.Routes(): got %v; want %v", rc.Routes(), wantRoutes)
+	}
+	if !slices.Contains(a.domains["example.com"], netip.MustParseAddr("192.0.2.1")) {
+		t.Errorf("missing %v from %v", "192.0.2.1", a.domains["exmaple.com"])
 	}
 }
 
 func TestWildcardDomains(t *testing.T) {
-	for _, shouldStore := range []bool{false, true} {
-		ctx := context.Background()
-		rc := &appctest.RouteCollector{}
-		var a *AppConnector
-		if shouldStore {
-			a = NewAppConnector(t.Logf, rc, &RouteInfo{}, fakeStoreRoutes)
-		} else {
-			a = NewAppConnector(t.Logf, rc, nil, nil)
-		}
+	ctx := context.Background()
+	rc := &appctest.RouteCollector{}
+	a := NewAppConnector(t.Logf, rc)
 
-		a.updateDomains([]string{"*.example.com"})
-		if err := a.ObserveDNSResponse(dnsResponse("foo.example.com.", "192.0.0.8")); err != nil {
-			t.Errorf("ObserveDNSResponse: %v", err)
-		}
-		a.Wait(ctx)
-		if got, want := rc.Routes(), []netip.Prefix{netip.MustParsePrefix("192.0.0.8/32")}; !slices.Equal(got, want) {
-			t.Errorf("routes: got %v; want %v", got, want)
-		}
-		if got, want := a.wildcards, []string{"example.com"}; !slices.Equal(got, want) {
-			t.Errorf("wildcards: got %v; want %v", got, want)
-		}
+	a.updateDomains([]string{"*.example.com"})
+	a.ObserveDNSResponse(dnsResponse("foo.example.com.", "192.0.0.8"))
+	a.Wait(ctx)
+	if got, want := rc.Routes(), []netip.Prefix{netip.MustParsePrefix("192.0.0.8/32")}; !slices.Equal(got, want) {
+		t.Errorf("routes: got %v; want %v", got, want)
+	}
+	if got, want := a.wildcards, []string{"example.com"}; !slices.Equal(got, want) {
+		t.Errorf("wildcards: got %v; want %v", got, want)
+	}
 
-		a.updateDomains([]string{"*.example.com", "example.com"})
-		if _, ok := a.domains["foo.example.com"]; !ok {
-			t.Errorf("expected foo.example.com to be preserved in domains due to wildcard")
-		}
-		if got, want := a.wildcards, []string{"example.com"}; !slices.Equal(got, want) {
-			t.Errorf("wildcards: got %v; want %v", got, want)
-		}
+	a.updateDomains([]string{"*.example.com", "example.com"})
+	if _, ok := a.domains["foo.example.com"]; !ok {
+		t.Errorf("expected foo.example.com to be preserved in domains due to wildcard")
+	}
+	if got, want := a.wildcards, []string{"example.com"}; !slices.Equal(got, want) {
+		t.Errorf("wildcards: got %v; want %v", got, want)
+	}
 
-		// There was an early regression where the wildcard domain was added repeatedly, this guards against that.
-		a.updateDomains([]string{"*.example.com", "example.com"})
-		if len(a.wildcards) != 1 {
-			t.Errorf("expected only one wildcard domain, got %v", a.wildcards)
-		}
+	// There was an early regression where the wildcard domain was added repeatedly, this guards against that.
+	a.updateDomains([]string{"*.example.com", "example.com"})
+	if len(a.wildcards) != 1 {
+		t.Errorf("expected only one wildcard domain, got %v", a.wildcards)
 	}
 }
 
@@ -383,314 +310,3 @@ func prefixCompare(a, b netip.Prefix) int {
 	}
 	return a.Addr().Compare(b.Addr())
 }
-
-func prefixes(in ...string) []netip.Prefix {
-	toRet := make([]netip.Prefix, len(in))
-	for i, s := range in {
-		toRet[i] = netip.MustParsePrefix(s)
-	}
-	return toRet
-}
-
-func TestUpdateRouteRouteRemoval(t *testing.T) {
-	for _, shouldStore := range []bool{false, true} {
-		ctx := context.Background()
-		rc := &appctest.RouteCollector{}
-
-		assertRoutes := func(prefix string, routes, removedRoutes []netip.Prefix) {
-			if !slices.Equal(routes, rc.Routes()) {
-				t.Fatalf("%s: (shouldStore=%t) routes want %v, got %v", prefix, shouldStore, routes, rc.Routes())
-			}
-			if !slices.Equal(removedRoutes, rc.RemovedRoutes()) {
-				t.Fatalf("%s: (shouldStore=%t) removedRoutes want %v, got %v", prefix, shouldStore, removedRoutes, rc.RemovedRoutes())
-			}
-		}
-
-		var a *AppConnector
-		if shouldStore {
-			a = NewAppConnector(t.Logf, rc, &RouteInfo{}, fakeStoreRoutes)
-		} else {
-			a = NewAppConnector(t.Logf, rc, nil, nil)
-		}
-		// nothing has yet been advertised
-		assertRoutes("appc init", []netip.Prefix{}, []netip.Prefix{})
-
-		a.UpdateDomainsAndRoutes([]string{}, prefixes("1.2.3.1/32", "1.2.3.2/32"))
-		a.Wait(ctx)
-		// the routes passed to UpdateDomainsAndRoutes have been advertised
-		assertRoutes("simple update", prefixes("1.2.3.1/32", "1.2.3.2/32"), []netip.Prefix{})
-
-		// one route the same, one different
-		a.UpdateDomainsAndRoutes([]string{}, prefixes("1.2.3.1/32", "1.2.3.3/32"))
-		a.Wait(ctx)
-		// old behavior: routes are not removed, resulting routes are both old and new
-		// (we have dupe 1.2.3.1 routes because the test RouteAdvertiser doesn't have the deduplication
-		// the real one does)
-		wantRoutes := prefixes("1.2.3.1/32", "1.2.3.2/32", "1.2.3.1/32", "1.2.3.3/32")
-		wantRemovedRoutes := []netip.Prefix{}
-		if shouldStore {
-			// new behavior: routes are removed, resulting routes are new only
-			wantRoutes = prefixes("1.2.3.1/32", "1.2.3.1/32", "1.2.3.3/32")
-			wantRemovedRoutes = prefixes("1.2.3.2/32")
-		}
-		assertRoutes("removal", wantRoutes, wantRemovedRoutes)
-	}
-}
-
-func TestUpdateDomainRouteRemoval(t *testing.T) {
-	for _, shouldStore := range []bool{false, true} {
-		ctx := context.Background()
-		rc := &appctest.RouteCollector{}
-
-		assertRoutes := func(prefix string, routes, removedRoutes []netip.Prefix) {
-			if !slices.Equal(routes, rc.Routes()) {
-				t.Fatalf("%s: (shouldStore=%t) routes want %v, got %v", prefix, shouldStore, routes, rc.Routes())
-			}
-			if !slices.Equal(removedRoutes, rc.RemovedRoutes()) {
-				t.Fatalf("%s: (shouldStore=%t) removedRoutes want %v, got %v", prefix, shouldStore, removedRoutes, rc.RemovedRoutes())
-			}
-		}
-
-		var a *AppConnector
-		if shouldStore {
-			a = NewAppConnector(t.Logf, rc, &RouteInfo{}, fakeStoreRoutes)
-		} else {
-			a = NewAppConnector(t.Logf, rc, nil, nil)
-		}
-		assertRoutes("appc init", []netip.Prefix{}, []netip.Prefix{})
-
-		a.UpdateDomainsAndRoutes([]string{"a.example.com", "b.example.com"}, []netip.Prefix{})
-		a.Wait(ctx)
-		// adding domains doesn't immediately cause any routes to be advertised
-		assertRoutes("update domains", []netip.Prefix{}, []netip.Prefix{})
-
-		for _, res := range [][]byte{
-			dnsResponse("a.example.com.", "1.2.3.1"),
-			dnsResponse("a.example.com.", "1.2.3.2"),
-			dnsResponse("b.example.com.", "1.2.3.3"),
-			dnsResponse("b.example.com.", "1.2.3.4"),
-		} {
-			if err := a.ObserveDNSResponse(res); err != nil {
-				t.Errorf("ObserveDNSResponse: %v", err)
-			}
-		}
-		a.Wait(ctx)
-		// observing dns responses causes routes to be advertised
-		assertRoutes("observed dns", prefixes("1.2.3.1/32", "1.2.3.2/32", "1.2.3.3/32", "1.2.3.4/32"), []netip.Prefix{})
-
-		a.UpdateDomainsAndRoutes([]string{"a.example.com"}, []netip.Prefix{})
-		a.Wait(ctx)
-		// old behavior, routes are not removed
-		wantRoutes := prefixes("1.2.3.1/32", "1.2.3.2/32", "1.2.3.3/32", "1.2.3.4/32")
-		wantRemovedRoutes := []netip.Prefix{}
-		if shouldStore {
-			// new behavior, routes are removed for b.example.com
-			wantRoutes = prefixes("1.2.3.1/32", "1.2.3.2/32")
-			wantRemovedRoutes = prefixes("1.2.3.3/32", "1.2.3.4/32")
-		}
-		assertRoutes("removal", wantRoutes, wantRemovedRoutes)
-	}
-}
-
-func TestUpdateWildcardRouteRemoval(t *testing.T) {
-	for _, shouldStore := range []bool{false, true} {
-		ctx := context.Background()
-		rc := &appctest.RouteCollector{}
-
-		assertRoutes := func(prefix string, routes, removedRoutes []netip.Prefix) {
-			if !slices.Equal(routes, rc.Routes()) {
-				t.Fatalf("%s: (shouldStore=%t) routes want %v, got %v", prefix, shouldStore, routes, rc.Routes())
-			}
-			if !slices.Equal(removedRoutes, rc.RemovedRoutes()) {
-				t.Fatalf("%s: (shouldStore=%t) removedRoutes want %v, got %v", prefix, shouldStore, removedRoutes, rc.RemovedRoutes())
-			}
-		}
-
-		var a *AppConnector
-		if shouldStore {
-			a = NewAppConnector(t.Logf, rc, &RouteInfo{}, fakeStoreRoutes)
-		} else {
-			a = NewAppConnector(t.Logf, rc, nil, nil)
-		}
-		assertRoutes("appc init", []netip.Prefix{}, []netip.Prefix{})
-
-		a.UpdateDomainsAndRoutes([]string{"a.example.com", "*.b.example.com"}, []netip.Prefix{})
-		a.Wait(ctx)
-		// adding domains doesn't immediately cause any routes to be advertised
-		assertRoutes("update domains", []netip.Prefix{}, []netip.Prefix{})
-
-		for _, res := range [][]byte{
-			dnsResponse("a.example.com.", "1.2.3.1"),
-			dnsResponse("a.example.com.", "1.2.3.2"),
-			dnsResponse("1.b.example.com.", "1.2.3.3"),
-			dnsResponse("2.b.example.com.", "1.2.3.4"),
-		} {
-			if err := a.ObserveDNSResponse(res); err != nil {
-				t.Errorf("ObserveDNSResponse: %v", err)
-			}
-		}
-		a.Wait(ctx)
-		// observing dns responses causes routes to be advertised
-		assertRoutes("observed dns", prefixes("1.2.3.1/32", "1.2.3.2/32", "1.2.3.3/32", "1.2.3.4/32"), []netip.Prefix{})
-
-		a.UpdateDomainsAndRoutes([]string{"a.example.com"}, []netip.Prefix{})
-		a.Wait(ctx)
-		// old behavior, routes are not removed
-		wantRoutes := prefixes("1.2.3.1/32", "1.2.3.2/32", "1.2.3.3/32", "1.2.3.4/32")
-		wantRemovedRoutes := []netip.Prefix{}
-		if shouldStore {
-			// new behavior, routes are removed for *.b.example.com
-			wantRoutes = prefixes("1.2.3.1/32", "1.2.3.2/32")
-			wantRemovedRoutes = prefixes("1.2.3.3/32", "1.2.3.4/32")
-		}
-		assertRoutes("removal", wantRoutes, wantRemovedRoutes)
-	}
-}
-
-func TestRoutesWithout(t *testing.T) {
-	assert := func(msg string, got, want []netip.Prefix) {
-		if !slices.Equal(want, got) {
-			t.Errorf("%s: want %v, got %v", msg, want, got)
-		}
-	}
-
-	assert("empty routes", routesWithout([]netip.Prefix{}, []netip.Prefix{}), []netip.Prefix{})
-	assert("a empty", routesWithout([]netip.Prefix{}, prefixes("1.1.1.1/32", "1.1.1.2/32")), []netip.Prefix{})
-	assert("b empty", routesWithout(prefixes("1.1.1.1/32", "1.1.1.2/32"), []netip.Prefix{}), prefixes("1.1.1.1/32", "1.1.1.2/32"))
-	assert("no overlap", routesWithout(prefixes("1.1.1.1/32", "1.1.1.2/32"), prefixes("1.1.1.3/32", "1.1.1.4/32")), prefixes("1.1.1.1/32", "1.1.1.2/32"))
-	assert("a has fewer", routesWithout(prefixes("1.1.1.1/32", "1.1.1.2/32"), prefixes("1.1.1.1/32", "1.1.1.2/32", "1.1.1.3/32", "1.1.1.4/32")), []netip.Prefix{})
-	assert("a has more", routesWithout(prefixes("1.1.1.1/32", "1.1.1.2/32", "1.1.1.3/32", "1.1.1.4/32"), prefixes("1.1.1.1/32", "1.1.1.3/32")), prefixes("1.1.1.2/32", "1.1.1.4/32"))
-}
-
-func TestRateLogger(t *testing.T) {
-	clock := tstest.Clock{}
-	wasCalled := false
-	rl := newRateLogger(func() time.Time { return clock.Now() }, 1*time.Second, func(count int64, _ time.Time, _ int64) {
-		if count != 3 {
-			t.Fatalf("count for prev period: got %d, want 3", count)
-		}
-		wasCalled = true
-	})
-
-	for i := 0; i < 3; i++ {
-		clock.Advance(1 * time.Millisecond)
-		rl.update(0)
-		if wasCalled {
-			t.Fatalf("wasCalled: got true, want false")
-		}
-	}
-
-	clock.Advance(1 * time.Second)
-	rl.update(0)
-	if !wasCalled {
-		t.Fatalf("wasCalled: got false, want true")
-	}
-
-	wasCalled = false
-	rl = newRateLogger(func() time.Time { return clock.Now() }, 1*time.Hour, func(count int64, _ time.Time, _ int64) {
-		if count != 3 {
-			t.Fatalf("count for prev period: got %d, want 3", count)
-		}
-		wasCalled = true
-	})
-
-	for i := 0; i < 3; i++ {
-		clock.Advance(1 * time.Minute)
-		rl.update(0)
-		if wasCalled {
-			t.Fatalf("wasCalled: got true, want false")
-		}
-	}
-
-	clock.Advance(1 * time.Hour)
-	rl.update(0)
-	if !wasCalled {
-		t.Fatalf("wasCalled: got false, want true")
-	}
-}
-
-func TestRouteStoreMetrics(t *testing.T) {
-	metricStoreRoutes(1, 1)
-	metricStoreRoutes(1, 1)         // the 1 buckets value should be 2
-	metricStoreRoutes(5, 5)         // the 5 buckets value should be 1
-	metricStoreRoutes(6, 6)         // the 10 buckets value should be 1
-	metricStoreRoutes(10001, 10001) // the over buckets value should be 1
-	wanted := map[string]int64{
-		"appc_store_routes_n_routes_1":    2,
-		"appc_store_routes_rate_1":        2,
-		"appc_store_routes_n_routes_5":    1,
-		"appc_store_routes_rate_5":        1,
-		"appc_store_routes_n_routes_10":   1,
-		"appc_store_routes_rate_10":       1,
-		"appc_store_routes_n_routes_over": 1,
-		"appc_store_routes_rate_over":     1,
-	}
-	for _, x := range clientmetric.Metrics() {
-		if x.Value() != wanted[x.Name()] {
-			t.Errorf("%s: want: %d, got: %d", x.Name(), wanted[x.Name()], x.Value())
-		}
-	}
-}
-
-func TestMetricBucketsAreSorted(t *testing.T) {
-	if !slices.IsSorted(metricStoreRoutesRateBuckets) {
-		t.Errorf("metricStoreRoutesRateBuckets must be in order")
-	}
-	if !slices.IsSorted(metricStoreRoutesNBuckets) {
-		t.Errorf("metricStoreRoutesNBuckets must be in order")
-	}
-}
-
-// TestUpdateRoutesDeadlock is a regression test for a deadlock in
-// LocalBackend<->AppConnector interaction. When using real LocalBackend as the
-// routeAdvertiser, calls to Advertise/UnadvertiseRoutes can end up calling
-// back into AppConnector via authReconfig. If everything is called
-// synchronously, this results in a deadlock on AppConnector.mu.
-func TestUpdateRoutesDeadlock(t *testing.T) {
-	ctx := context.Background()
-	rc := &appctest.RouteCollector{}
-	a := NewAppConnector(t.Logf, rc, &RouteInfo{}, fakeStoreRoutes)
-
-	advertiseCalled := new(atomic.Bool)
-	unadvertiseCalled := new(atomic.Bool)
-	rc.AdvertiseCallback = func() {
-		// Call something that requires a.mu to be held.
-		a.DomainRoutes()
-		advertiseCalled.Store(true)
-	}
-	rc.UnadvertiseCallback = func() {
-		// Call something that requires a.mu to be held.
-		a.DomainRoutes()
-		unadvertiseCalled.Store(true)
-	}
-
-	a.updateDomains([]string{"example.com"})
-	a.Wait(ctx)
-
-	// Trigger rc.AdveriseRoute.
-	a.updateRoutes(
-		[]netip.Prefix{
-			netip.MustParsePrefix("127.0.0.1/32"),
-			netip.MustParsePrefix("127.0.0.2/32"),
-		},
-	)
-	a.Wait(ctx)
-	// Trigger rc.UnadveriseRoute.
-	a.updateRoutes(
-		[]netip.Prefix{
-			netip.MustParsePrefix("127.0.0.1/32"),
-		},
-	)
-	a.Wait(ctx)
-
-	if !advertiseCalled.Load() {
-		t.Error("AdvertiseRoute was not called")
-	}
-	if !unadvertiseCalled.Load() {
-		t.Error("UnadvertiseRoute was not called")
-	}
-
-	if want := []netip.Prefix{netip.MustParsePrefix("127.0.0.1/32")}; !slices.Equal(slices.Compact(rc.Routes()), want) {
-		t.Fatalf("got %v, want %v", rc.Routes(), want)
-	}
-}

appc/appctest/appctest.go

@@ -1,7 +1,6 @@
 // Copyright (c) Tailscale Inc & AUTHORS
 // SPDX-License-Identifier: BSD-3-Clause
 
-// Package appctest contains code to help test App Connectors.
 package appctest
 
 import (
@@ -11,22 +10,12 @@ import (
 
 // RouteCollector is a test helper that collects the list of routes advertised
 type RouteCollector struct {
-	// AdvertiseCallback (optional) is called synchronously from
-	// AdvertiseRoute.
-	AdvertiseCallback func()
-	// UnadvertiseCallback (optional) is called synchronously from
-	// UnadvertiseRoute.
-	UnadvertiseCallback func()
-
 	routes        []netip.Prefix
 	removedRoutes []netip.Prefix
 }
 
 func (rc *RouteCollector) AdvertiseRoute(pfx ...netip.Prefix) error {
 	rc.routes = append(rc.routes, pfx...)
-	if rc.AdvertiseCallback != nil {
-		rc.AdvertiseCallback()
-	}
 	return nil
 }
 
@@ -40,9 +29,6 @@ func (rc *RouteCollector) UnadvertiseRoute(toRemove ...netip.Prefix) error {
 			rc.removedRoutes = append(rc.removedRoutes, r)
 		}
 	}
-	if rc.UnadvertiseCallback != nil {
-		rc.UnadvertiseCallback()
-	}
 	return nil
 }
 

assert_ts_toolchain_match.go

@@ -1,27 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build tailscale_go
-
-package tailscaleroot
-
-import (
-	"fmt"
-	"os"
-	"strings"
-)
-
-func init() {
-	tsRev, ok := tailscaleToolchainRev()
-	if !ok {
-		panic("binary built with tailscale_go build tag but failed to read build info or find tailscale.toolchain.rev in build info")
-	}
-	want := strings.TrimSpace(GoToolchainRev)
-	if tsRev != want {
-		if os.Getenv("TS_PERMIT_TOOLCHAIN_MISMATCH") == "1" {
-			fmt.Fprintf(os.Stderr, "tailscale.toolchain.rev = %q, want %q; but ignoring due to TS_PERMIT_TOOLCHAIN_MISMATCH=1\n", tsRev, want)
-			return
-		}
-		panic(fmt.Sprintf("binary built with tailscale_go build tag but Go toolchain %q doesn't match github.com/tailscale/tailscale expected value %q; override this failure with TS_PERMIT_TOOLCHAIN_MISMATCH=1", tsRev, want))
-	}
-}

atomicfile/atomicfile.go

@@ -15,9 +15,8 @@ import (
 )
 
 // WriteFile writes data to filename+some suffix, then renames it into filename.
-// The perm argument is ignored on Windows, but if the target filename already
-// exists then the target file's attributes and ACLs are preserved. If the target
-// filename already exists but is not a regular file, WriteFile returns an error.
+// The perm argument is ignored on Windows. If the target filename already
+// exists but is not a regular file, WriteFile returns an error.
 func WriteFile(filename string, data []byte, perm os.FileMode) (err error) {
 	fi, err := os.Stat(filename)
 	if err == nil && !fi.Mode().IsRegular() {
@@ -48,5 +47,5 @@ func WriteFile(filename string, data []byte, perm os.FileMode) (err error) {
 	if err := f.Close(); err != nil {
 		return err
 	}
-	return rename(tmpName, filename)
+	return os.Rename(tmpName, filename)
 }

atomicfile/atomicfile_notwindows.go

@@ -1,14 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build !windows
-
-package atomicfile
-
-import (
-	"os"
-)
-
-func rename(srcFile, destFile string) error {
-	return os.Rename(srcFile, destFile)
-}

atomicfile/atomicfile_windows.go

@@ -1,33 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-package atomicfile
-
-import (
-	"os"
-
-	"golang.org/x/sys/windows"
-)
-
-func rename(srcFile, destFile string) error {
-	// Use replaceFile when possible to preserve the original file's attributes and ACLs.
-	if err := replaceFile(destFile, srcFile); err == nil || err != windows.ERROR_FILE_NOT_FOUND {
-		return err
-	}
-	// destFile doesn't exist. Just do a normal rename.
-	return os.Rename(srcFile, destFile)
-}
-
-func replaceFile(destFile, srcFile string) error {
-	destFile16, err := windows.UTF16PtrFromString(destFile)
-	if err != nil {
-		return err
-	}
-
-	srcFile16, err := windows.UTF16PtrFromString(srcFile)
-	if err != nil {
-		return err
-	}
-
-	return replaceFileW(destFile16, srcFile16, nil, 0, nil, nil)
-}

atomicfile/atomicfile_windows_test.go

@@ -1,146 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-package atomicfile
-
-import (
-	"os"
-	"testing"
-	"unsafe"
-
-	"golang.org/x/sys/windows"
-)
-
-var _SECURITY_RESOURCE_MANAGER_AUTHORITY = windows.SidIdentifierAuthority{[6]byte{0, 0, 0, 0, 0, 9}}
-
-// makeRandomSID generates a SID derived from a v4 GUID.
-// This is basically the same algorithm used by browser sandboxes for generating
-// random SIDs.
-func makeRandomSID() (*windows.SID, error) {
-	guid, err := windows.GenerateGUID()
-	if err != nil {
-		return nil, err
-	}
-
-	rids := *((*[4]uint32)(unsafe.Pointer(&guid)))
-
-	var pSID *windows.SID
-	if err := windows.AllocateAndInitializeSid(&_SECURITY_RESOURCE_MANAGER_AUTHORITY, 4, rids[0], rids[1], rids[2], rids[3], 0, 0, 0, 0, &pSID); err != nil {
-		return nil, err
-	}
-	defer windows.FreeSid(pSID)
-
-	// Make a copy that lives on the Go heap
-	return pSID.Copy()
-}
-
-func getExistingFileSD(name string) (*windows.SECURITY_DESCRIPTOR, error) {
-	const infoFlags = windows.DACL_SECURITY_INFORMATION
-	return windows.GetNamedSecurityInfo(name, windows.SE_FILE_OBJECT, infoFlags)
-}
-
-func getExistingFileDACL(name string) (*windows.ACL, error) {
-	sd, err := getExistingFileSD(name)
-	if err != nil {
-		return nil, err
-	}
-
-	dacl, _, err := sd.DACL()
-	return dacl, err
-}
-
-func addDenyACEForRandomSID(dacl *windows.ACL) (*windows.ACL, error) {
-	randomSID, err := makeRandomSID()
-	if err != nil {
-		return nil, err
-	}
-
-	randomSIDTrustee := windows.TRUSTEE{nil, windows.NO_MULTIPLE_TRUSTEE,
-		windows.TRUSTEE_IS_SID, windows.TRUSTEE_IS_UNKNOWN,
-		windows.TrusteeValueFromSID(randomSID)}
-
-	entries := []windows.EXPLICIT_ACCESS{
-		{
-			windows.GENERIC_ALL,
-			windows.DENY_ACCESS,
-			windows.NO_INHERITANCE,
-			randomSIDTrustee,
-		},
-	}
-
-	return windows.ACLFromEntries(entries, dacl)
-}
-
-func setExistingFileDACL(name string, dacl *windows.ACL) error {
-	return windows.SetNamedSecurityInfo(name, windows.SE_FILE_OBJECT,
-		windows.DACL_SECURITY_INFORMATION, nil, nil, dacl, nil)
-}
-
-// makeOrigFileWithCustomDACL creates a new, temporary file with a custom
-// DACL that we can check for later. It returns the name of the temporary
-// file and the security descriptor for the file in SDDL format.
-func makeOrigFileWithCustomDACL() (name, sddl string, err error) {
-	f, err := os.CreateTemp("", "foo*.tmp")
-	if err != nil {
-		return "", "", err
-	}
-	name = f.Name()
-	if err := f.Close(); err != nil {
-		return "", "", err
-	}
-	f = nil
-	defer func() {
-		if err != nil {
-			os.Remove(name)
-		}
-	}()
-
-	dacl, err := getExistingFileDACL(name)
-	if err != nil {
-		return "", "", err
-	}
-
-	// Add a harmless, deny-only ACE for a random SID that isn't used for anything
-	// (but that we can check for later).
-	dacl, err = addDenyACEForRandomSID(dacl)
-	if err != nil {
-		return "", "", err
-	}
-
-	if err := setExistingFileDACL(name, dacl); err != nil {
-		return "", "", err
-	}
-
-	sd, err := getExistingFileSD(name)
-	if err != nil {
-		return "", "", err
-	}
-
-	return name, sd.String(), nil
-}
-
-func TestPreserveSecurityInfo(t *testing.T) {
-	// Make a test file with a custom ACL.
-	origFileName, want, err := makeOrigFileWithCustomDACL()
-	if err != nil {
-		t.Fatalf("makeOrigFileWithCustomDACL returned %v", err)
-	}
-	t.Cleanup(func() {
-		os.Remove(origFileName)
-	})
-
-	if err := WriteFile(origFileName, []byte{}, 0); err != nil {
-		t.Fatalf("WriteFile returned %v", err)
-	}
-
-	// We expect origFileName's security descriptor to be unchanged despite
-	// the WriteFile call.
-	sd, err := getExistingFileSD(origFileName)
-	if err != nil {
-		t.Fatalf("getExistingFileSD(%q) returned %v", origFileName, err)
-	}
-
-	if got := sd.String(); got != want {
-		t.Errorf("security descriptor comparison failed: got %q, want %q", got, want)
-	}
-}

atomicfile/mksyscall.go

@@ -1,8 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-package atomicfile
-
-//go:generate go run golang.org/x/sys/windows/mkwinsyscall -output zsyscall_windows.go mksyscall.go
-
-//sys replaceFileW(replaced *uint16, replacement *uint16, backup *uint16, flags uint32, exclude unsafe.Pointer, reserved unsafe.Pointer) (err error) [int32(failretval)==0] = kernel32.ReplaceFileW

atomicfile/zsyscall_windows.go

@@ -1,52 +0,0 @@
-// Code generated by 'go generate'; DO NOT EDIT.
-
-package atomicfile
-
-import (
-	"syscall"
-	"unsafe"
-
-	"golang.org/x/sys/windows"
-)
-
-var _ unsafe.Pointer
-
-// Do the interface allocations only once for common
-// Errno values.
-const (
-	errnoERROR_IO_PENDING = 997
-)
-
-var (
-	errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
-	errERROR_EINVAL     error = syscall.EINVAL
-)
-
-// errnoErr returns common boxed Errno values, to prevent
-// allocations at runtime.
-func errnoErr(e syscall.Errno) error {
-	switch e {
-	case 0:
-		return errERROR_EINVAL
-	case errnoERROR_IO_PENDING:
-		return errERROR_IO_PENDING
-	}
-	// TODO: add more here, after collecting data on the common
-	// error values see on Windows. (perhaps when running
-	// all.bat?)
-	return e
-}
-
-var (
-	modkernel32 = windows.NewLazySystemDLL("kernel32.dll")
-
-	procReplaceFileW = modkernel32.NewProc("ReplaceFileW")
-)
-
-func replaceFileW(replaced *uint16, replacement *uint16, backup *uint16, flags uint32, exclude unsafe.Pointer, reserved unsafe.Pointer) (err error) {
-	r1, _, e1 := syscall.Syscall6(procReplaceFileW.Addr(), 6, uintptr(unsafe.Pointer(replaced)), uintptr(unsafe.Pointer(replacement)), uintptr(unsafe.Pointer(backup)), uintptr(flags), uintptr(exclude), uintptr(reserved))
-	if int32(r1) == 0 {
-		err = errnoErr(e1)
-	}
-	return
-}

build_dist.sh

@@ -37,7 +37,7 @@ while [ "$#" -gt 1 ]; do
 	--extra-small)
 		shift
 		ldflags="$ldflags -w -s"
-		tags="${tags:+$tags,}ts_omit_aws,ts_omit_bird,ts_omit_tap,ts_omit_kube,ts_omit_completion,ts_omit_ssh,ts_omit_wakeonlan,ts_omit_capture"
+		tags="${tags:+$tags,}ts_omit_aws,ts_omit_bird,ts_omit_tap,ts_omit_kube"
 		;;
 	--box)
 		shift

build_docker.sh

@@ -1,36 +1,38 @@
 #!/usr/bin/env sh
+
 #
-# This script builds Tailscale container images using
-# github.com/tailscale/mkctr.
-# By default the images will be tagged with the current version and git
-# hash of this repository as produced by ./cmd/mkversion.
-# This is the image build mechanim used to build the official Tailscale
-# container images.
+# Runs `go build` with flags configured for docker distribution. All
+# it does differently from `go build` is burn git commit and version
+# information into the binaries inside docker, so that we can track down user
+# issues.
+#
+############################################################################
+#
+# WARNING: Tailscale is not yet officially supported in container
+# environments, such as Docker and Kubernetes. Though it should work, we
+# don't regularly test it, and we know there are some feature limitations.
+#
+# See current bugs tagged "containers":
+#    https://github.com/tailscale/tailscale/labels/containers
+#
+############################################################################
 
 set -eu
 
 # Use the "go" binary from the "tool" directory (which is github.com/tailscale/go)
-export PATH="$PWD"/tool:"$PATH"
+export PATH=$PWD/tool:$PATH
 
-eval "$(./build_dist.sh shellvars)"
+eval $(./build_dist.sh shellvars)
 
 DEFAULT_TARGET="client"
 DEFAULT_TAGS="v${VERSION_SHORT},v${VERSION_MINOR}"
-DEFAULT_BASE="tailscale/alpine-base:3.19"
-# Set a few pre-defined OCI annotations. The source annotation is used by tools such as Renovate that scan the linked
-# Github repo to find release notes for any new image tags. Note that for official Tailscale images the default
-# annotations defined here will be overriden by release scripts that call this script.
-# https://github.com/opencontainers/image-spec/blob/main/annotations.md#pre-defined-annotation-keys
-DEFAULT_ANNOTATIONS="org.opencontainers.image.source=https://github.com/tailscale/tailscale/blob/main/build_docker.sh,org.opencontainers.image.vendor=Tailscale"
+DEFAULT_BASE="tailscale/alpine-base:3.18"
 
 PUSH="${PUSH:-false}"
 TARGET="${TARGET:-${DEFAULT_TARGET}}"
 TAGS="${TAGS:-${DEFAULT_TAGS}}"
 BASE="${BASE:-${DEFAULT_BASE}}"
 PLATFORM="${PLATFORM:-}" # default to all platforms
-# OCI annotations that will be added to the image.
-# https://github.com/opencontainers/image-spec/blob/main/annotations.md
-ANNOTATIONS="${ANNOTATIONS:-${DEFAULT_ANNOTATIONS}}"
 
 case "$TARGET" in
   client)
@@ -47,14 +49,12 @@ case "$TARGET" in
         -X tailscale.com/version.gitCommitStamp=${VERSION_GIT_HASH}" \
       --base="${BASE}" \
       --tags="${TAGS}" \
-      --gotags="ts_kube,ts_package_container" \
       --repos="${REPOS}" \
       --push="${PUSH}" \
       --target="${PLATFORM}" \
-      --annotations="${ANNOTATIONS}" \
       /usr/local/bin/containerboot
     ;;
-  k8s-operator)
+  operator)
     DEFAULT_REPOS="tailscale/k8s-operator"
     REPOS="${REPOS:-${DEFAULT_REPOS}}"
     go run github.com/tailscale/mkctr \
@@ -65,33 +65,13 @@ case "$TARGET" in
         -X tailscale.com/version.gitCommitStamp=${VERSION_GIT_HASH}" \
       --base="${BASE}" \
       --tags="${TAGS}" \
-      --gotags="ts_kube,ts_package_container" \
       --repos="${REPOS}" \
       --push="${PUSH}" \
       --target="${PLATFORM}" \
-      --annotations="${ANNOTATIONS}" \
       /usr/local/bin/operator
     ;;
-  k8s-nameserver)
-    DEFAULT_REPOS="tailscale/k8s-nameserver"
-    REPOS="${REPOS:-${DEFAULT_REPOS}}"
-    go run github.com/tailscale/mkctr \
-      --gopaths="tailscale.com/cmd/k8s-nameserver:/usr/local/bin/k8s-nameserver" \
-      --ldflags=" \
-        -X tailscale.com/version.longStamp=${VERSION_LONG} \
-        -X tailscale.com/version.shortStamp=${VERSION_SHORT} \
-        -X tailscale.com/version.gitCommitStamp=${VERSION_GIT_HASH}" \
-      --base="${BASE}" \
-      --tags="${TAGS}" \
-      --gotags="ts_kube,ts_package_container" \
-      --repos="${REPOS}" \
-      --push="${PUSH}" \
-      --target="${PLATFORM}" \
-      --annotations="${ANNOTATIONS}" \
-      /usr/local/bin/k8s-nameserver
-    ;;
   *)
     echo "unknown target: $TARGET"
     exit 1
     ;;
-esac
+esac

client/local/local_test.go

@@ -1,74 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build go1.19
-
-package local
-
-import (
-	"context"
-	"net"
-	"net/http"
-	"net/http/httptest"
-	"testing"
-
-	"tailscale.com/tstest/deptest"
-	"tailscale.com/types/key"
-)
-
-func TestGetServeConfigFromJSON(t *testing.T) {
-	sc, err := getServeConfigFromJSON([]byte("null"))
-	if sc != nil {
-		t.Errorf("want nil for null")
-	}
-	if err != nil {
-		t.Errorf("reading null: %v", err)
-	}
-
-	sc, err = getServeConfigFromJSON([]byte(`{"TCP":{}}`))
-	if err != nil {
-		t.Errorf("reading object: %v", err)
-	} else if sc == nil {
-		t.Errorf("want non-nil for object")
-	} else if sc.TCP == nil {
-		t.Errorf("want non-nil TCP for object")
-	}
-}
-
-func TestWhoIsPeerNotFound(t *testing.T) {
-	ts := httptest.NewServer(http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(404)
-	}))
-	defer ts.Close()
-
-	lc := &Client{
-		Dial: func(ctx context.Context, network, addr string) (net.Conn, error) {
-			var std net.Dialer
-			return std.DialContext(ctx, network, ts.Listener.Addr().(*net.TCPAddr).String())
-		},
-	}
-	var k key.NodePublic
-	if err := k.UnmarshalText([]byte("nodekey:5c8f86d5fc70d924e55f02446165a5dae8f822994ad26bcf4b08fd841f9bf261")); err != nil {
-		t.Fatal(err)
-	}
-	res, err := lc.WhoIsNodeKey(context.Background(), k)
-	if err != ErrPeerNotFound {
-		t.Errorf("got (%v, %v), want ErrPeerNotFound", res, err)
-	}
-	res, err = lc.WhoIs(context.Background(), "1.2.3.4:5678")
-	if err != ErrPeerNotFound {
-		t.Errorf("got (%v, %v), want ErrPeerNotFound", res, err)
-	}
-}
-
-func TestDeps(t *testing.T) {
-	deptest.DepChecker{
-		BadDeps: map[string]string{
-			// Make sure we don't again accidentally bring in a dependency on
-			// drive or its transitive dependencies
-			"testing":                        "do not use testing package in production code",
-			"tailscale.com/drive/driveimpl":  "https://github.com/tailscale/tailscale/pull/10631",
-			"github.com/studio-b12/gowebdav": "https://github.com/tailscale/tailscale/pull/10631",
-		},
-	}.Check(t)
-}

client/systray/logo.go

@@ -1,319 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build cgo || !darwin
-
-package systray
-
-import (
-	"bytes"
-	"context"
-	"image"
-	"image/color"
-	"image/png"
-	"sync"
-	"time"
-
-	"fyne.io/systray"
-	"github.com/fogleman/gg"
-)
-
-// tsLogo represents the Tailscale logo displayed as the systray icon.
-type tsLogo struct {
-	// dots represents the state of the 3x3 dot grid in the logo.
-	// A 0 represents a gray dot, any other value is a white dot.
-	dots [9]byte
-
-	// dotMask returns an image mask to be used when rendering the logo dots.
-	dotMask func(dc *gg.Context, borderUnits int, radius int) *image.Alpha
-
-	// overlay is called after the dots are rendered to draw an additional overlay.
-	overlay func(dc *gg.Context, borderUnits int, radius int)
-}
-
-var (
-	// disconnected is all gray dots
-	disconnected = tsLogo{dots: [9]byte{
-		0, 0, 0,
-		0, 0, 0,
-		0, 0, 0,
-	}}
-
-	// connected is the normal Tailscale logo
-	connected = tsLogo{dots: [9]byte{
-		0, 0, 0,
-		1, 1, 1,
-		0, 1, 0,
-	}}
-
-	// loading is a special tsLogo value that is not meant to be rendered directly,
-	// but indicates that the loading animation should be shown.
-	loading = tsLogo{dots: [9]byte{'l', 'o', 'a', 'd', 'i', 'n', 'g'}}
-
-	// loadingIcons are shown in sequence as an animated loading icon.
-	loadingLogos = []tsLogo{
-		{dots: [9]byte{
-			0, 1, 1,
-			1, 0, 1,
-			0, 0, 1,
-		}},
-		{dots: [9]byte{
-			0, 1, 1,
-			0, 0, 1,
-			0, 1, 0,
-		}},
-		{dots: [9]byte{
-			0, 1, 1,
-			0, 0, 0,
-			0, 0, 1,
-		}},
-		{dots: [9]byte{
-			0, 0, 1,
-			0, 1, 0,
-			0, 0, 0,
-		}},
-		{dots: [9]byte{
-			0, 1, 0,
-			0, 0, 0,
-			0, 0, 0,
-		}},
-		{dots: [9]byte{
-			0, 0, 0,
-			0, 0, 1,
-			0, 0, 0,
-		}},
-		{dots: [9]byte{
-			0, 0, 0,
-			0, 0, 0,
-			0, 0, 0,
-		}},
-		{dots: [9]byte{
-			0, 0, 1,
-			0, 0, 0,
-			0, 0, 0,
-		}},
-		{dots: [9]byte{
-			0, 0, 0,
-			0, 0, 0,
-			1, 0, 0,
-		}},
-		{dots: [9]byte{
-			0, 0, 0,
-			0, 0, 0,
-			1, 1, 0,
-		}},
-		{dots: [9]byte{
-			0, 0, 0,
-			1, 0, 0,
-			1, 1, 0,
-		}},
-		{dots: [9]byte{
-			0, 0, 0,
-			1, 1, 0,
-			0, 1, 0,
-		}},
-		{dots: [9]byte{
-			0, 0, 0,
-			1, 1, 0,
-			0, 1, 1,
-		}},
-		{dots: [9]byte{
-			0, 0, 0,
-			1, 1, 1,
-			0, 0, 1,
-		}},
-		{dots: [9]byte{
-			0, 1, 0,
-			0, 1, 1,
-			1, 0, 1,
-		}},
-	}
-
-	// exitNodeOnline is the Tailscale logo with an additional arrow overlay in the corner.
-	exitNodeOnline = tsLogo{
-		dots: [9]byte{
-			0, 0, 0,
-			1, 1, 1,
-			0, 1, 0,
-		},
-		// draw an arrow mask in the bottom right corner with a reasonably thick line width.
-		dotMask: func(dc *gg.Context, borderUnits int, radius int) *image.Alpha {
-			bu, r := float64(borderUnits), float64(radius)
-
-			x1 := r * (bu + 3.5)
-			y := r * (bu + 7)
-			x2 := x1 + (r * 5)
-
-			mc := gg.NewContext(dc.Width(), dc.Height())
-			mc.DrawLine(x1, y, x2, y)                 // arrow center line
-			mc.DrawLine(x2-(1.5*r), y-(1.5*r), x2, y) // top of arrow tip
-			mc.DrawLine(x2-(1.5*r), y+(1.5*r), x2, y) // bottom of arrow tip
-			mc.SetLineWidth(r * 3)
-			mc.Stroke()
-			return mc.AsMask()
-		},
-		// draw an arrow in the bottom right corner over the masked area.
-		overlay: func(dc *gg.Context, borderUnits int, radius int) {
-			bu, r := float64(borderUnits), float64(radius)
-
-			x1 := r * (bu + 3.5)
-			y := r * (bu + 7)
-			x2 := x1 + (r * 5)
-
-			dc.DrawLine(x1, y, x2, y)                 // arrow center line
-			dc.DrawLine(x2-(1.5*r), y-(1.5*r), x2, y) // top of arrow tip
-			dc.DrawLine(x2-(1.5*r), y+(1.5*r), x2, y) // bottom of arrow tip
-			dc.SetColor(fg)
-			dc.SetLineWidth(r)
-			dc.Stroke()
-		},
-	}
-
-	// exitNodeOffline is the Tailscale logo with a red "x" in the corner.
-	exitNodeOffline = tsLogo{
-		dots: [9]byte{
-			0, 0, 0,
-			1, 1, 1,
-			0, 1, 0,
-		},
-		// Draw a square that hides the four dots in the bottom right corner,
-		dotMask: func(dc *gg.Context, borderUnits int, radius int) *image.Alpha {
-			bu, r := float64(borderUnits), float64(radius)
-			x := r * (bu + 3)
-
-			mc := gg.NewContext(dc.Width(), dc.Height())
-			mc.DrawRectangle(x, x, r*6, r*6)
-			mc.Fill()
-			return mc.AsMask()
-		},
-		// draw a red "x" over the bottom right corner.
-		overlay: func(dc *gg.Context, borderUnits int, radius int) {
-			bu, r := float64(borderUnits), float64(radius)
-
-			x1 := r * (bu + 4)
-			x2 := x1 + (r * 3.5)
-			dc.DrawLine(x1, x1, x2, x2) // top-left to bottom-right stroke
-			dc.DrawLine(x1, x2, x2, x1) // bottom-left to top-right stroke
-			dc.SetColor(red)
-			dc.SetLineWidth(r)
-			dc.Stroke()
-		},
-	}
-)
-
-var (
-	bg   = color.NRGBA{0, 0, 0, 255}
-	fg   = color.NRGBA{255, 255, 255, 255}
-	gray = color.NRGBA{255, 255, 255, 102}
-	red  = color.NRGBA{229, 111, 74, 255}
-)
-
-// render returns a PNG image of the logo.
-func (logo tsLogo) render() *bytes.Buffer {
-	const borderUnits = 1
-	return logo.renderWithBorder(borderUnits)
-}
-
-// renderWithBorder returns a PNG image of the logo with the specified border width.
-// One border unit is equal to the radius of a tailscale logo dot.
-func (logo tsLogo) renderWithBorder(borderUnits int) *bytes.Buffer {
-	const radius = 25
-	dim := radius * (8 + borderUnits*2)
-
-	dc := gg.NewContext(dim, dim)
-	dc.DrawRectangle(0, 0, float64(dim), float64(dim))
-	dc.SetColor(bg)
-	dc.Fill()
-
-	if logo.dotMask != nil {
-		mask := logo.dotMask(dc, borderUnits, radius)
-		dc.SetMask(mask)
-		dc.InvertMask()
-	}
-
-	for y := 0; y < 3; y++ {
-		for x := 0; x < 3; x++ {
-			px := (borderUnits + 1 + 3*x) * radius
-			py := (borderUnits + 1 + 3*y) * radius
-			col := fg
-			if logo.dots[y*3+x] == 0 {
-				col = gray
-			}
-			dc.DrawCircle(float64(px), float64(py), radius)
-			dc.SetColor(col)
-			dc.Fill()
-		}
-	}
-
-	if logo.overlay != nil {
-		dc.ResetClip()
-		logo.overlay(dc, borderUnits, radius)
-	}
-
-	b := bytes.NewBuffer(nil)
-	png.Encode(b, dc.Image())
-	return b
-}
-
-// setAppIcon renders logo and sets it as the systray icon.
-func setAppIcon(icon tsLogo) {
-	if icon.dots == loading.dots {
-		startLoadingAnimation()
-	} else {
-		stopLoadingAnimation()
-		systray.SetIcon(icon.render().Bytes())
-	}
-}
-
-var (
-	loadingMu sync.Mutex // protects loadingCancel
-
-	// loadingCancel stops the loading animation in the systray icon.
-	// This is nil if the animation is not currently active.
-	loadingCancel func()
-)
-
-// startLoadingAnimation starts the animated loading icon in the system tray.
-// The animation continues until [stopLoadingAnimation] is called.
-// If the loading animation is already active, this func does nothing.
-func startLoadingAnimation() {
-	loadingMu.Lock()
-	defer loadingMu.Unlock()
-
-	if loadingCancel != nil {
-		// loading icon already displayed
-		return
-	}
-
-	ctx := context.Background()
-	ctx, loadingCancel = context.WithCancel(ctx)
-
-	go func() {
-		t := time.NewTicker(500 * time.Millisecond)
-		var i int
-		for {
-			select {
-			case <-ctx.Done():
-				return
-			case <-t.C:
-				systray.SetIcon(loadingLogos[i].render().Bytes())
-				i++
-				if i >= len(loadingLogos) {
-					i = 0
-				}
-			}
-		}
-	}()
-}
-
-// stopLoadingAnimation stops the animated loading icon in the system tray.
-// If the loading animation is not currently active, this func does nothing.
-func stopLoadingAnimation() {
-	loadingMu.Lock()
-	defer loadingMu.Unlock()
-
-	if loadingCancel != nil {
-		loadingCancel()
-		loadingCancel = nil
-	}
-}

client/systray/systray.go

@@ -1,740 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build cgo || !darwin
-
-// Package systray provides a minimal Tailscale systray application.
-package systray
-
-import (
-	"context"
-	"errors"
-	"fmt"
-	"io"
-	"log"
-	"net/http"
-	"os"
-	"os/signal"
-	"runtime"
-	"slices"
-	"strings"
-	"sync"
-	"syscall"
-	"time"
-
-	"fyne.io/systray"
-	"github.com/atotto/clipboard"
-	dbus "github.com/godbus/dbus/v5"
-	"github.com/toqueteos/webbrowser"
-	"tailscale.com/client/local"
-	"tailscale.com/ipn"
-	"tailscale.com/ipn/ipnstate"
-	"tailscale.com/tailcfg"
-	"tailscale.com/util/slicesx"
-	"tailscale.com/util/stringsx"
-)
-
-var (
-	// newMenuDelay is the amount of time to sleep after creating a new menu,
-	// but before adding items to it. This works around a bug in some dbus implementations.
-	newMenuDelay time.Duration
-
-	// if true, treat all mullvad exit node countries as single-city.
-	// Instead of rendering a submenu with cities, just select the highest-priority peer.
-	hideMullvadCities bool
-)
-
-// Run starts the systray menu and blocks until the menu exits.
-func (menu *Menu) Run() {
-	menu.updateState()
-
-	// exit cleanly on SIGINT and SIGTERM
-	go func() {
-		interrupt := make(chan os.Signal, 1)
-		signal.Notify(interrupt, syscall.SIGINT, syscall.SIGTERM)
-		select {
-		case <-interrupt:
-			menu.onExit()
-		case <-menu.bgCtx.Done():
-		}
-	}()
-	go menu.lc.IncrementCounter(menu.bgCtx, "systray_start", 1)
-
-	systray.Run(menu.onReady, menu.onExit)
-}
-
-// Menu represents the systray menu, its items, and the current Tailscale state.
-type Menu struct {
-	mu sync.Mutex // protects the entire Menu
-
-	lc          local.Client
-	status      *ipnstate.Status
-	curProfile  ipn.LoginProfile
-	allProfiles []ipn.LoginProfile
-
-	// readonly is whether the systray app is running in read-only mode.
-	// This is set if LocalAPI returns a permission error,
-	// typically because the user needs to run `tailscale set --operator=$USER`.
-	readonly bool
-
-	bgCtx    context.Context // ctx for background tasks not involving menu item clicks
-	bgCancel context.CancelFunc
-
-	// Top-level menu items
-	connect    *systray.MenuItem
-	disconnect *systray.MenuItem
-	self       *systray.MenuItem
-	exitNodes  *systray.MenuItem
-	more       *systray.MenuItem
-	quit       *systray.MenuItem
-
-	rebuildCh  chan struct{} // triggers a menu rebuild
-	accountsCh chan ipn.ProfileID
-	exitNodeCh chan tailcfg.StableNodeID // ID of selected exit node
-
-	eventCancel context.CancelFunc // cancel eventLoop
-
-	notificationIcon *os.File // icon used for desktop notifications
-}
-
-func (menu *Menu) init() {
-	if menu.bgCtx != nil {
-		// already initialized
-		return
-	}
-
-	menu.rebuildCh = make(chan struct{}, 1)
-	menu.accountsCh = make(chan ipn.ProfileID)
-	menu.exitNodeCh = make(chan tailcfg.StableNodeID)
-
-	// dbus wants a file path for notification icons, so copy to a temp file.
-	menu.notificationIcon, _ = os.CreateTemp("", "tailscale-systray.png")
-	io.Copy(menu.notificationIcon, connected.renderWithBorder(3))
-
-	menu.bgCtx, menu.bgCancel = context.WithCancel(context.Background())
-	go menu.watchIPNBus()
-}
-
-func init() {
-	if runtime.GOOS != "linux" {
-		// so far, these tweaks are only needed on Linux
-		return
-	}
-
-	desktop := strings.ToLower(os.Getenv("XDG_CURRENT_DESKTOP"))
-	switch desktop {
-	case "gnome":
-		// GNOME expands submenus downward in the main menu, rather than flyouts to the side.
-		// Either as a result of that or another limitation, there seems to be a maximum depth of submenus.
-		// Mullvad countries that have a city submenu are not being rendered, and so can't be selected.
-		// Handle this by simply treating all mullvad countries as single-city and select the best peer.
-		hideMullvadCities = true
-	case "kde":
-		// KDE doesn't need a delay, and actually won't render submenus
-		// if we delay for more than about 400µs.
-		newMenuDelay = 0
-	default:
-		// Add a slight delay to ensure the menu is created before adding items.
-		//
-		// Systray implementations that use libdbusmenu sometimes process messages out of order,
-		// resulting in errors such as:
-		//    (waybar:153009): LIBDBUSMENU-GTK-WARNING **: 18:07:11.551: Children but no menu, someone's been naughty with their 'children-display' property: 'submenu'
-		//
-		// See also: https://github.com/fyne-io/systray/issues/12
-		newMenuDelay = 10 * time.Millisecond
-	}
-}
-
-// onReady is called by the systray package when the menu is ready to be built.
-func (menu *Menu) onReady() {
-	log.Printf("starting")
-	setAppIcon(disconnected)
-	menu.rebuild()
-}
-
-// updateState updates the Menu state from the Tailscale local client.
-func (menu *Menu) updateState() {
-	menu.mu.Lock()
-	defer menu.mu.Unlock()
-	menu.init()
-
-	menu.readonly = false
-
-	var err error
-	menu.status, err = menu.lc.Status(menu.bgCtx)
-	if err != nil {
-		log.Print(err)
-	}
-	menu.curProfile, menu.allProfiles, err = menu.lc.ProfileStatus(menu.bgCtx)
-	if err != nil {
-		if local.IsAccessDeniedError(err) {
-			menu.readonly = true
-		}
-		log.Print(err)
-	}
-}
-
-// rebuild the systray menu based on the current Tailscale state.
-//
-// We currently rebuild the entire menu because it is not easy to update the existing menu.
-// You cannot iterate over the items in a menu, nor can you remove some items like separators.
-// So for now we rebuild the whole thing, and can optimize this later if needed.
-func (menu *Menu) rebuild() {
-	menu.mu.Lock()
-	defer menu.mu.Unlock()
-	menu.init()
-
-	if menu.eventCancel != nil {
-		menu.eventCancel()
-	}
-	ctx := context.Background()
-	ctx, menu.eventCancel = context.WithCancel(ctx)
-
-	systray.ResetMenu()
-
-	if menu.readonly {
-		const readonlyMsg = "No permission to manage Tailscale.\nSee tailscale.com/s/cli-operator"
-		m := systray.AddMenuItem(readonlyMsg, "")
-		onClick(ctx, m, func(_ context.Context) {
-			webbrowser.Open("https://tailscale.com/s/cli-operator")
-		})
-		systray.AddSeparator()
-	}
-
-	menu.connect = systray.AddMenuItem("Connect", "")
-	menu.disconnect = systray.AddMenuItem("Disconnect", "")
-	menu.disconnect.Hide()
-	systray.AddSeparator()
-
-	// delay to prevent race setting icon on first start
-	time.Sleep(newMenuDelay)
-
-	// Set systray menu icon and title.
-	// Also adjust connect/disconnect menu items if needed.
-	var backendState string
-	if menu.status != nil {
-		backendState = menu.status.BackendState
-	}
-	switch backendState {
-	case ipn.Running.String():
-		if menu.status.ExitNodeStatus != nil && !menu.status.ExitNodeStatus.ID.IsZero() {
-			if menu.status.ExitNodeStatus.Online {
-				setTooltip("Using exit node")
-				setAppIcon(exitNodeOnline)
-			} else {
-				setTooltip("Exit node offline")
-				setAppIcon(exitNodeOffline)
-			}
-		} else {
-			setTooltip(fmt.Sprintf("Connected to %s", menu.status.CurrentTailnet.Name))
-			setAppIcon(connected)
-		}
-		menu.connect.SetTitle("Connected")
-		menu.connect.Disable()
-		menu.disconnect.Show()
-		menu.disconnect.Enable()
-	case ipn.Starting.String():
-		setTooltip("Connecting")
-		setAppIcon(loading)
-	default:
-		setTooltip("Disconnected")
-		setAppIcon(disconnected)
-	}
-
-	if menu.readonly {
-		menu.connect.Disable()
-		menu.disconnect.Disable()
-	}
-
-	account := "Account"
-	if pt := profileTitle(menu.curProfile); pt != "" {
-		account = pt
-	}
-	if !menu.readonly {
-		accounts := systray.AddMenuItem(account, "")
-		setRemoteIcon(accounts, menu.curProfile.UserProfile.ProfilePicURL)
-		time.Sleep(newMenuDelay)
-		for _, profile := range menu.allProfiles {
-			title := profileTitle(profile)
-			var item *systray.MenuItem
-			if profile.ID == menu.curProfile.ID {
-				item = accounts.AddSubMenuItemCheckbox(title, "", true)
-			} else {
-				item = accounts.AddSubMenuItem(title, "")
-			}
-			setRemoteIcon(item, profile.UserProfile.ProfilePicURL)
-			onClick(ctx, item, func(ctx context.Context) {
-				select {
-				case <-ctx.Done():
-				case menu.accountsCh <- profile.ID:
-				}
-			})
-		}
-	}
-
-	if menu.status != nil && menu.status.Self != nil && len(menu.status.Self.TailscaleIPs) > 0 {
-		title := fmt.Sprintf("This Device: %s (%s)", menu.status.Self.HostName, menu.status.Self.TailscaleIPs[0])
-		menu.self = systray.AddMenuItem(title, "")
-	} else {
-		menu.self = systray.AddMenuItem("This Device: not connected", "")
-		menu.self.Disable()
-	}
-	systray.AddSeparator()
-
-	if !menu.readonly {
-		menu.rebuildExitNodeMenu(ctx)
-	}
-
-	if menu.status != nil {
-		menu.more = systray.AddMenuItem("More settings", "")
-		onClick(ctx, menu.more, func(_ context.Context) {
-			webbrowser.Open("http://100.100.100.100/")
-		})
-	}
-
-	menu.quit = systray.AddMenuItem("Quit", "Quit the app")
-	menu.quit.Enable()
-
-	go menu.eventLoop(ctx)
-}
-
-// profileTitle returns the title string for a profile menu item.
-func profileTitle(profile ipn.LoginProfile) string {
-	title := profile.Name
-	if profile.NetworkProfile.DomainName != "" {
-		if runtime.GOOS == "windows" || runtime.GOOS == "darwin" {
-			// windows and mac don't support multi-line menu
-			title += " (" + profile.NetworkProfile.DomainName + ")"
-		} else {
-			title += "\n" + profile.NetworkProfile.DomainName
-		}
-	}
-	return title
-}
-
-var (
-	cacheMu   sync.Mutex
-	httpCache = map[string][]byte{} // URL => response body
-)
-
-// setRemoteIcon sets the icon for menu to the specified remote image.
-// Remote images are fetched as needed and cached.
-func setRemoteIcon(menu *systray.MenuItem, urlStr string) {
-	if menu == nil || urlStr == "" {
-		return
-	}
-
-	cacheMu.Lock()
-	b, ok := httpCache[urlStr]
-	if !ok {
-		resp, err := http.Get(urlStr)
-		if err == nil && resp.StatusCode == http.StatusOK {
-			b, _ = io.ReadAll(resp.Body)
-			httpCache[urlStr] = b
-			resp.Body.Close()
-		}
-	}
-	cacheMu.Unlock()
-
-	if len(b) > 0 {
-		menu.SetIcon(b)
-	}
-}
-
-// setTooltip sets the tooltip text for the systray icon.
-func setTooltip(text string) {
-	if runtime.GOOS == "darwin" || runtime.GOOS == "windows" {
-		systray.SetTooltip(text)
-	} else {
-		// on Linux, SetTitle actually sets the tooltip
-		systray.SetTitle(text)
-	}
-}
-
-// eventLoop is the main event loop for handling click events on menu items
-// and responding to Tailscale state changes.
-// This method does not return until ctx.Done is closed.
-func (menu *Menu) eventLoop(ctx context.Context) {
-	for {
-		select {
-		case <-ctx.Done():
-			return
-		case <-menu.rebuildCh:
-			menu.updateState()
-			menu.rebuild()
-		case <-menu.connect.ClickedCh:
-			_, err := menu.lc.EditPrefs(ctx, &ipn.MaskedPrefs{
-				Prefs: ipn.Prefs{
-					WantRunning: true,
-				},
-				WantRunningSet: true,
-			})
-			if err != nil {
-				log.Printf("error connecting: %v", err)
-			}
-
-		case <-menu.disconnect.ClickedCh:
-			_, err := menu.lc.EditPrefs(ctx, &ipn.MaskedPrefs{
-				Prefs: ipn.Prefs{
-					WantRunning: false,
-				},
-				WantRunningSet: true,
-			})
-			if err != nil {
-				log.Printf("error disconnecting: %v", err)
-			}
-
-		case <-menu.self.ClickedCh:
-			menu.copyTailscaleIP(menu.status.Self)
-
-		case id := <-menu.accountsCh:
-			if err := menu.lc.SwitchProfile(ctx, id); err != nil {
-				log.Printf("error switching to profile ID %v: %v", id, err)
-			}
-
-		case exitNode := <-menu.exitNodeCh:
-			if exitNode.IsZero() {
-				log.Print("disable exit node")
-				if err := menu.lc.SetUseExitNode(ctx, false); err != nil {
-					log.Printf("error disabling exit node: %v", err)
-				}
-			} else {
-				log.Printf("enable exit node: %v", exitNode)
-				mp := &ipn.MaskedPrefs{
-					Prefs: ipn.Prefs{
-						ExitNodeID: exitNode,
-					},
-					ExitNodeIDSet: true,
-				}
-				if _, err := menu.lc.EditPrefs(ctx, mp); err != nil {
-					log.Printf("error setting exit node: %v", err)
-				}
-			}
-
-		case <-menu.quit.ClickedCh:
-			systray.Quit()
-		}
-	}
-}
-
-// onClick registers a click handler for a menu item.
-func onClick(ctx context.Context, item *systray.MenuItem, fn func(ctx context.Context)) {
-	go func() {
-		for {
-			select {
-			case <-ctx.Done():
-				return
-			case <-item.ClickedCh:
-				fn(ctx)
-			}
-		}
-	}()
-}
-
-// watchIPNBus subscribes to the tailscale event bus and sends state updates to chState.
-// This method does not return.
-func (menu *Menu) watchIPNBus() {
-	for {
-		if err := menu.watchIPNBusInner(); err != nil {
-			log.Println(err)
-			if errors.Is(err, context.Canceled) {
-				// If the context got canceled, we will never be able to
-				// reconnect to IPN bus, so exit the process.
-				log.Fatalf("watchIPNBus: %v", err)
-			}
-		}
-		// If our watch connection breaks, wait a bit before reconnecting. No
-		// reason to spam the logs if e.g. tailscaled is restarting or goes
-		// down.
-		time.Sleep(3 * time.Second)
-	}
-}
-
-func (menu *Menu) watchIPNBusInner() error {
-	watcher, err := menu.lc.WatchIPNBus(menu.bgCtx, ipn.NotifyNoPrivateKeys)
-	if err != nil {
-		return fmt.Errorf("watching ipn bus: %w", err)
-	}
-	defer watcher.Close()
-	for {
-		select {
-		case <-menu.bgCtx.Done():
-			return nil
-		default:
-			n, err := watcher.Next()
-			if err != nil {
-				return fmt.Errorf("ipnbus error: %w", err)
-			}
-			var rebuild bool
-			if n.State != nil {
-				log.Printf("new state: %v", n.State)
-				rebuild = true
-			}
-			if n.Prefs != nil {
-				rebuild = true
-			}
-			if rebuild {
-				menu.rebuildCh <- struct{}{}
-			}
-		}
-	}
-}
-
-// copyTailscaleIP copies the first Tailscale IP of the given device to the clipboard
-// and sends a notification with the copied value.
-func (menu *Menu) copyTailscaleIP(device *ipnstate.PeerStatus) {
-	if device == nil || len(device.TailscaleIPs) == 0 {
-		return
-	}
-	name := strings.Split(device.DNSName, ".")[0]
-	ip := device.TailscaleIPs[0].String()
-	err := clipboard.WriteAll(ip)
-	if err != nil {
-		log.Printf("clipboard error: %v", err)
-	}
-
-	menu.sendNotification(fmt.Sprintf("Copied Address for %v", name), ip)
-}
-
-// sendNotification sends a desktop notification with the given title and content.
-func (menu *Menu) sendNotification(title, content string) {
-	conn, err := dbus.SessionBus()
-	if err != nil {
-		log.Printf("dbus: %v", err)
-		return
-	}
-	timeout := 3 * time.Second
-	obj := conn.Object("org.freedesktop.Notifications", "/org/freedesktop/Notifications")
-	call := obj.Call("org.freedesktop.Notifications.Notify", 0, "Tailscale", uint32(0),
-		menu.notificationIcon.Name(), title, content, []string{}, map[string]dbus.Variant{}, int32(timeout.Milliseconds()))
-	if call.Err != nil {
-		log.Printf("dbus: %v", call.Err)
-	}
-}
-
-func (menu *Menu) rebuildExitNodeMenu(ctx context.Context) {
-	if menu.status == nil {
-		return
-	}
-
-	status := menu.status
-	menu.exitNodes = systray.AddMenuItem("Exit Nodes", "")
-	time.Sleep(newMenuDelay)
-
-	// register a click handler for a menu item to set nodeID as the exit node.
-	setExitNodeOnClick := func(item *systray.MenuItem, nodeID tailcfg.StableNodeID) {
-		onClick(ctx, item, func(ctx context.Context) {
-			select {
-			case <-ctx.Done():
-			case menu.exitNodeCh <- nodeID:
-			}
-		})
-	}
-
-	noExitNodeMenu := menu.exitNodes.AddSubMenuItemCheckbox("None", "", status.ExitNodeStatus == nil)
-	setExitNodeOnClick(noExitNodeMenu, "")
-
-	// Show recommended exit node if available.
-	if status.Self.CapMap.Contains(tailcfg.NodeAttrSuggestExitNodeUI) {
-		sugg, err := menu.lc.SuggestExitNode(ctx)
-		if err == nil {
-			title := "Recommended: "
-			if loc := sugg.Location; loc.Valid() && loc.Country() != "" {
-				flag := countryFlag(loc.CountryCode())
-				title += fmt.Sprintf("%s %s: %s", flag, loc.Country(), loc.City())
-			} else {
-				title += strings.Split(sugg.Name, ".")[0]
-			}
-			menu.exitNodes.AddSeparator()
-			rm := menu.exitNodes.AddSubMenuItemCheckbox(title, "", false)
-			setExitNodeOnClick(rm, sugg.ID)
-			if status.ExitNodeStatus != nil && sugg.ID == status.ExitNodeStatus.ID {
-				rm.Check()
-			}
-		}
-	}
-
-	// Add tailnet exit nodes if present.
-	var tailnetExitNodes []*ipnstate.PeerStatus
-	for _, ps := range status.Peer {
-		if ps.ExitNodeOption && ps.Location == nil {
-			tailnetExitNodes = append(tailnetExitNodes, ps)
-		}
-	}
-	if len(tailnetExitNodes) > 0 {
-		menu.exitNodes.AddSeparator()
-		menu.exitNodes.AddSubMenuItem("Tailnet Exit Nodes", "").Disable()
-		for _, ps := range status.Peer {
-			if !ps.ExitNodeOption || ps.Location != nil {
-				continue
-			}
-			name := strings.Split(ps.DNSName, ".")[0]
-			if !ps.Online {
-				name += " (offline)"
-			}
-			sm := menu.exitNodes.AddSubMenuItemCheckbox(name, "", false)
-			if !ps.Online {
-				sm.Disable()
-			}
-			if status.ExitNodeStatus != nil && ps.ID == status.ExitNodeStatus.ID {
-				sm.Check()
-			}
-			setExitNodeOnClick(sm, ps.ID)
-		}
-	}
-
-	// Add mullvad exit nodes if present.
-	var mullvadExitNodes mullvadPeers
-	if status.Self.CapMap.Contains("mullvad") {
-		mullvadExitNodes = newMullvadPeers(status)
-	}
-	if len(mullvadExitNodes.countries) > 0 {
-		menu.exitNodes.AddSeparator()
-		menu.exitNodes.AddSubMenuItem("Location-based Exit Nodes", "").Disable()
-		mullvadMenu := menu.exitNodes.AddSubMenuItemCheckbox("Mullvad VPN", "", false)
-
-		for _, country := range mullvadExitNodes.sortedCountries() {
-			flag := countryFlag(country.code)
-			countryMenu := mullvadMenu.AddSubMenuItemCheckbox(flag+" "+country.name, "", false)
-
-			// single-city country, no submenu
-			if len(country.cities) == 1 || hideMullvadCities {
-				setExitNodeOnClick(countryMenu, country.best.ID)
-				if status.ExitNodeStatus != nil {
-					for _, city := range country.cities {
-						for _, ps := range city.peers {
-							if status.ExitNodeStatus.ID == ps.ID {
-								mullvadMenu.Check()
-								countryMenu.Check()
-							}
-						}
-					}
-				}
-				continue
-			}
-
-			// multi-city country, build submenu with "best available" option and cities.
-			time.Sleep(newMenuDelay)
-			bm := countryMenu.AddSubMenuItemCheckbox("Best Available", "", false)
-			setExitNodeOnClick(bm, country.best.ID)
-			countryMenu.AddSeparator()
-
-			for _, city := range country.sortedCities() {
-				cityMenu := countryMenu.AddSubMenuItemCheckbox(city.name, "", false)
-				setExitNodeOnClick(cityMenu, city.best.ID)
-				if status.ExitNodeStatus != nil {
-					for _, ps := range city.peers {
-						if status.ExitNodeStatus.ID == ps.ID {
-							mullvadMenu.Check()
-							countryMenu.Check()
-							cityMenu.Check()
-						}
-					}
-				}
-			}
-		}
-	}
-
-	// TODO: "Allow Local Network Access" and "Run Exit Node" menu items
-}
-
-// mullvadPeers contains all mullvad peer nodes, sorted by country and city.
-type mullvadPeers struct {
-	countries map[string]*mvCountry // country code (uppercase) => country
-}
-
-// sortedCountries returns countries containing mullvad nodes, sorted by name.
-func (mp mullvadPeers) sortedCountries() []*mvCountry {
-	countries := slicesx.MapValues(mp.countries)
-	slices.SortFunc(countries, func(a, b *mvCountry) int {
-		return stringsx.CompareFold(a.name, b.name)
-	})
-	return countries
-}
-
-type mvCountry struct {
-	code   string
-	name   string
-	best   *ipnstate.PeerStatus // highest priority peer in the country
-	cities map[string]*mvCity   // city code => city
-}
-
-// sortedCities returns cities containing mullvad nodes, sorted by name.
-func (mc *mvCountry) sortedCities() []*mvCity {
-	cities := slicesx.MapValues(mc.cities)
-	slices.SortFunc(cities, func(a, b *mvCity) int {
-		return stringsx.CompareFold(a.name, b.name)
-	})
-	return cities
-}
-
-// countryFlag takes a 2-character ASCII string and returns the corresponding emoji flag.
-// It returns the empty string on error.
-func countryFlag(code string) string {
-	if len(code) != 2 {
-		return ""
-	}
-	runes := make([]rune, 0, 2)
-	for i := range 2 {
-		b := code[i] | 32 // lowercase
-		if b < 'a' || b > 'z' {
-			return ""
-		}
-		// https://en.wikipedia.org/wiki/Regional_indicator_symbol
-		runes = append(runes, 0x1F1E6+rune(b-'a'))
-	}
-	return string(runes)
-}
-
-type mvCity struct {
-	name  string
-	best  *ipnstate.PeerStatus // highest priority peer in the city
-	peers []*ipnstate.PeerStatus
-}
-
-func newMullvadPeers(status *ipnstate.Status) mullvadPeers {
-	countries := make(map[string]*mvCountry)
-	for _, ps := range status.Peer {
-		if !ps.ExitNodeOption || ps.Location == nil {
-			continue
-		}
-		loc := ps.Location
-		country, ok := countries[loc.CountryCode]
-		if !ok {
-			country = &mvCountry{
-				code:   loc.CountryCode,
-				name:   loc.Country,
-				cities: make(map[string]*mvCity),
-			}
-			countries[loc.CountryCode] = country
-		}
-		city, ok := countries[loc.CountryCode].cities[loc.CityCode]
-		if !ok {
-			city = &mvCity{
-				name: loc.City,
-			}
-			countries[loc.CountryCode].cities[loc.CityCode] = city
-		}
-		city.peers = append(city.peers, ps)
-		if city.best == nil || ps.Location.Priority > city.best.Location.Priority {
-			city.best = ps
-		}
-		if country.best == nil || ps.Location.Priority > country.best.Location.Priority {
-			country.best = ps
-		}
-	}
-	return mullvadPeers{countries}
-}
-
-// onExit is called by the systray package when the menu is exiting.
-func (menu *Menu) onExit() {
-	log.Printf("exiting")
-	if menu.bgCancel != nil {
-		menu.bgCancel()
-	}
-	if menu.eventCancel != nil {
-		menu.eventCancel()
-	}
-
-	os.Remove(menu.notificationIcon.Name())
-}

client/tailscale/acl.go

@@ -12,7 +12,6 @@ import (
 	"fmt"
 	"net/http"
 	"net/netip"
-	"net/url"
 )
 
 // ACLRow defines a rule that grants access by a set of users or groups to a set
@@ -20,7 +19,6 @@ import (
 // Only one of Src/Dst or Users/Ports may be specified.
 type ACLRow struct {
 	Action string   `json:"action,omitempty"` // valid values: "accept"
-	Proto  string   `json:"proto,omitempty"`  // protocol
 	Users  []string `json:"users,omitempty"`  // old name for src
 	Ports  []string `json:"ports,omitempty"`  // old name for dst
 	Src    []string `json:"src,omitempty"`
@@ -33,23 +31,12 @@ type ACLRow struct {
 type ACLTest struct {
 	Src    string   `json:"src,omitempty"`    // source
 	User   string   `json:"user,omitempty"`   // old name for source
-	Proto  string   `json:"proto,omitempty"`  // protocol
 	Accept []string `json:"accept,omitempty"` // expected destination ip:port that user can access
 	Deny   []string `json:"deny,omitempty"`   // expected destination ip:port that user cannot access
 
 	Allow []string `json:"allow,omitempty"` // old name for accept
 }
 
-// NodeAttrGrant defines additional string attributes that apply to specific devices.
-type NodeAttrGrant struct {
-	// Target specifies which nodes the attributes apply to. The nodes can be a
-	// tag (tag:server), user (alice@example.com), group (group:kids), or *.
-	Target []string `json:"target,omitempty"`
-
-	// Attr are the attributes to set on Target(s).
-	Attr []string `json:"attr,omitempty"`
-}
-
 // ACLDetails contains all the details for an ACL.
 type ACLDetails struct {
 	Tests     []ACLTest           `json:"tests,omitempty"`
@@ -57,7 +44,6 @@ type ACLDetails struct {
 	Groups    map[string][]string `json:"groups,omitempty"`
 	TagOwners map[string][]string `json:"tagowners,omitempty"`
 	Hosts     map[string]string   `json:"hosts,omitempty"`
-	NodeAttrs []NodeAttrGrant     `json:"nodeAttrs,omitempty"`
 }
 
 // ACL contains an ACLDetails and metadata.
@@ -84,7 +70,7 @@ func (c *Client) ACL(ctx context.Context) (acl *ACL, err error) {
 		}
 	}()
 
-	path := c.BuildTailnetURL("acl")
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/acl", c.baseURL(), c.tailnet)
 	req, err := http.NewRequestWithContext(ctx, "GET", path, nil)
 	if err != nil {
 		return nil, err
@@ -98,7 +84,7 @@ func (c *Client) ACL(ctx context.Context) (acl *ACL, err error) {
 	// If status code was not successful, return the error.
 	// TODO: Change the check for the StatusCode to include other 2XX success codes.
 	if resp.StatusCode != http.StatusOK {
-		return nil, HandleErrorResponse(b, resp)
+		return nil, handleErrorResponse(b, resp)
 	}
 
 	// Otherwise, try to decode the response.
@@ -127,7 +113,7 @@ func (c *Client) ACLHuJSON(ctx context.Context) (acl *ACLHuJSON, err error) {
 		}
 	}()
 
-	path := c.BuildTailnetURL("acl", url.Values{"details": {"1"}})
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/acl?details=1", c.baseURL(), c.tailnet)
 	req, err := http.NewRequestWithContext(ctx, "GET", path, nil)
 	if err != nil {
 		return nil, err
@@ -139,7 +125,7 @@ func (c *Client) ACLHuJSON(ctx context.Context) (acl *ACLHuJSON, err error) {
 	}
 
 	if resp.StatusCode != http.StatusOK {
-		return nil, HandleErrorResponse(b, resp)
+		return nil, handleErrorResponse(b, resp)
 	}
 
 	data := struct {
@@ -147,7 +133,7 @@ func (c *Client) ACLHuJSON(ctx context.Context) (acl *ACLHuJSON, err error) {
 		Warnings []string `json:"warnings"`
 	}{}
 	if err := json.Unmarshal(b, &data); err != nil {
-		return nil, fmt.Errorf("json.Unmarshal %q: %w", b, err)
+		return nil, err
 	}
 
 	acl = &ACLHuJSON{
@@ -164,12 +150,7 @@ func (c *Client) ACLHuJSON(ctx context.Context) (acl *ACLHuJSON, err error) {
 // ACLTestFailureSummary specifies the JSON format sent to the
 // JavaScript client to be rendered in the HTML.
 type ACLTestFailureSummary struct {
-	// User is the source ("src") value of the ACL test that failed.
-	// The name "user" is a legacy holdover from the original naming and
-	// is kept for compatibility but it may also contain any value
-	// that's valid in a ACL test "src" field.
-	User string `json:"user,omitempty"`
-
+	User     string   `json:"user,omitempty"`
 	Errors   []string `json:"errors,omitempty"`
 	Warnings []string `json:"warnings,omitempty"`
 }
@@ -185,7 +166,7 @@ func (e ACLTestError) Error() string {
 }
 
 func (c *Client) aclPOSTRequest(ctx context.Context, body []byte, avoidCollisions bool, etag, acceptHeader string) ([]byte, string, error) {
-	path := c.BuildTailnetURL("acl")
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/acl", c.baseURL(), c.tailnet)
 	req, err := http.NewRequestWithContext(ctx, "POST", path, bytes.NewBuffer(body))
 	if err != nil {
 		return nil, "", err
@@ -289,17 +270,6 @@ type UserRuleMatch struct {
 	Users      []string `json:"users"`
 	Ports      []string `json:"ports"`
 	LineNumber int      `json:"lineNumber"`
-	// Via is the list of targets through which Users can access Ports.
-	// See https://tailscale.com/kb/1378/via for more information.
-	Via []string `json:"via,omitempty"`
-
-	// Postures is a list of posture policies that are
-	// associated with this match. The rules can be looked
-	// up in the ACLPreviewResponse parent struct.
-	// The source of the list is from srcPosture on
-	// an ACL or Grant rule:
-	// https://tailscale.com/kb/1288/device-posture#posture-conditions
-	Postures []string `json:"postures"`
 }
 
 // ACLPreviewResponse is the response type of previewACLPostRequest
@@ -307,12 +277,6 @@ type ACLPreviewResponse struct {
 	Matches    []UserRuleMatch `json:"matches"`    // ACL rules that match the specified user or ipport.
 	Type       string          `json:"type"`       // The request type: currently only "user" or "ipport".
 	PreviewFor string          `json:"previewFor"` // A specific user or ipport.
-
-	// Postures is a map of postures and associated rules that apply
-	// to this preview.
-	// For more details about the posture mapping, see:
-	// https://tailscale.com/kb/1288/device-posture#postures
-	Postures map[string][]string `json:"postures,omitempty"`
 }
 
 // ACLPreview is the response type of PreviewACLForUser, PreviewACLForIPPort, PreviewACLHuJSONForUser, and PreviewACLHuJSONForIPPort
@@ -320,16 +284,10 @@ type ACLPreview struct {
 	Matches []UserRuleMatch `json:"matches"`
 	User    string          `json:"user,omitempty"`   // Filled if response of PreviewACLForUser or PreviewACLHuJSONForUser
 	IPPort  string          `json:"ipport,omitempty"` // Filled if response of PreviewACLForIPPort or PreviewACLHuJSONForIPPort
-
-	// Postures is a map of postures and associated rules that apply
-	// to this preview.
-	// For more details about the posture mapping, see:
-	// https://tailscale.com/kb/1288/device-posture#postures
-	Postures map[string][]string `json:"postures,omitempty"`
 }
 
 func (c *Client) previewACLPostRequest(ctx context.Context, body []byte, previewType string, previewFor string) (res *ACLPreviewResponse, err error) {
-	path := c.BuildTailnetURL("acl", "preview")
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/acl/preview", c.baseURL(), c.tailnet)
 	req, err := http.NewRequestWithContext(ctx, "POST", path, bytes.NewBuffer(body))
 	if err != nil {
 		return nil, err
@@ -351,7 +309,7 @@ func (c *Client) previewACLPostRequest(ctx context.Context, body []byte, preview
 	// If status code was not successful, return the error.
 	// TODO: Change the check for the StatusCode to include other 2XX success codes.
 	if resp.StatusCode != http.StatusOK {
-		return nil, HandleErrorResponse(b, resp)
+		return nil, handleErrorResponse(b, resp)
 	}
 	if err = json.Unmarshal(b, &res); err != nil {
 		return nil, err
@@ -383,9 +341,8 @@ func (c *Client) PreviewACLForUser(ctx context.Context, acl ACL, user string) (r
 	}
 
 	return &ACLPreview{
-		Matches:  b.Matches,
-		User:     b.PreviewFor,
-		Postures: b.Postures,
+		Matches: b.Matches,
+		User:    b.PreviewFor,
 	}, nil
 }
 
@@ -412,9 +369,8 @@ func (c *Client) PreviewACLForIPPort(ctx context.Context, acl ACL, ipport netip.
 	}
 
 	return &ACLPreview{
-		Matches:  b.Matches,
-		IPPort:   b.PreviewFor,
-		Postures: b.Postures,
+		Matches: b.Matches,
+		IPPort:  b.PreviewFor,
 	}, nil
 }
 
@@ -438,9 +394,8 @@ func (c *Client) PreviewACLHuJSONForUser(ctx context.Context, acl ACLHuJSON, use
 	}
 
 	return &ACLPreview{
-		Matches:  b.Matches,
-		User:     b.PreviewFor,
-		Postures: b.Postures,
+		Matches: b.Matches,
+		User:    b.PreviewFor,
 	}, nil
 }
 
@@ -464,9 +419,8 @@ func (c *Client) PreviewACLHuJSONForIPPort(ctx context.Context, acl ACLHuJSON, i
 	}
 
 	return &ACLPreview{
-		Matches:  b.Matches,
-		IPPort:   b.PreviewFor,
-		Postures: b.Postures,
+		Matches: b.Matches,
+		IPPort:  b.PreviewFor,
 	}, nil
 }
 
@@ -489,7 +443,7 @@ func (c *Client) ValidateACLJSON(ctx context.Context, source, dest string) (test
 		return nil, err
 	}
 
-	path := c.BuildTailnetURL("acl", "validate")
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/acl/validate", c.baseURL(), c.tailnet)
 	req, err := http.NewRequestWithContext(ctx, "POST", path, bytes.NewBuffer(postData))
 	if err != nil {
 		return nil, err

client/tailscale/apitype/apitype.go

@@ -4,32 +4,11 @@
 // Package apitype contains types for the Tailscale LocalAPI and control plane API.
 package apitype
 
-import (
-	"tailscale.com/tailcfg"
-	"tailscale.com/types/dnstype"
-	"tailscale.com/util/ctxkey"
-)
+import "tailscale.com/tailcfg"
 
 // LocalAPIHost is the Host header value used by the LocalAPI.
 const LocalAPIHost = "local-tailscaled.sock"
 
-// RequestReasonHeader is the header used to pass justification for a LocalAPI request,
-// such as when a user wants to perform an action they don't have permission for,
-// and a policy allows it with justification. As of 2025-01-29, it is only used to
-// allow a user to disconnect Tailscale when the "always-on" mode is enabled.
-//
-// The header value is base64-encoded using the standard encoding defined in RFC 4648.
-//
-// See tailscale/corp#26146.
-const RequestReasonHeader = "X-Tailscale-Reason"
-
-// RequestReasonKey is the context key used to pass the request reason
-// when making a LocalAPI request via [local.Client].
-// It's value is a raw string. An empty string means no reason was provided.
-//
-// See tailscale/corp#26146.
-var RequestReasonKey = ctxkey.New(RequestReasonHeader, "")
-
 // WhoIsResponse is the JSON type returned by tailscaled debug server's /whois?ip=$IP handler.
 // In successful whois responses, Node and UserProfile are never nil.
 type WhoIsResponse struct {
@@ -70,27 +49,3 @@ type ReloadConfigResponse struct {
 	Reloaded bool   // whether the config was reloaded
 	Err      string // any error message
 }
-
-// ExitNodeSuggestionResponse is the response to a LocalAPI suggest-exit-node GET request.
-// It returns the StableNodeID, name, and location of a suggested exit node for the client making the request.
-type ExitNodeSuggestionResponse struct {
-	ID       tailcfg.StableNodeID
-	Name     string
-	Location tailcfg.LocationView `json:",omitempty"`
-}
-
-// DNSOSConfig mimics dns.OSConfig without forcing us to import the entire dns package
-// into the CLI.
-type DNSOSConfig struct {
-	Nameservers   []string
-	SearchDomains []string
-	MatchDomains  []string
-}
-
-// DNSQueryResponse is the response to a DNS query request sent via LocalAPI.
-type DNSQueryResponse struct {
-	// Bytes is the raw DNS response bytes.
-	Bytes []byte
-	// Resolvers is the list of resolvers that the forwarder deemed able to resolve the query.
-	Resolvers []*dnstype.Resolver
-}

client/tailscale/devices.go

@@ -10,7 +10,6 @@ import (
 	"context"
 	"encoding/json"
 	"fmt"
-	"log"
 	"net/http"
 	"net/url"
 
@@ -40,7 +39,6 @@ type Device struct {
 	// It's currently just 1 element, the 100.x.y.z Tailscale IP.
 	Addresses []string `json:"addresses"`
 	DeviceID  string   `json:"id"`
-	NodeID    string   `json:"nodeId"`
 	User      string   `json:"user"`
 	Name      string   `json:"name"`
 	Hostname  string   `json:"hostname"`
@@ -79,13 +77,6 @@ type Device struct {
 	// Tailscale have attempted to collect this from the device but it has not
 	// opted in, PostureIdentity will have Disabled=true.
 	PostureIdentity *DevicePostureIdentity `json:"postureIdentity"`
-
-	// TailnetLockKey is the tailnet lock public key of the node as a hex string.
-	TailnetLockKey string `json:"tailnetLockKey,omitempty"`
-
-	// TailnetLockErr indicates an issue with the tailnet lock node-key signature
-	// on this device. This field is only populated when tailnet lock is enabled.
-	TailnetLockErr string `json:"tailnetLockError,omitempty"`
 }
 
 type DevicePostureIdentity struct {
@@ -138,7 +129,7 @@ func (c *Client) Devices(ctx context.Context, fields *DeviceFieldsOpts) (deviceL
 		}
 	}()
 
-	path := c.BuildTailnetURL("devices")
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/devices", c.baseURL(), c.tailnet)
 	req, err := http.NewRequestWithContext(ctx, "GET", path, nil)
 	if err != nil {
 		return nil, err
@@ -156,7 +147,7 @@ func (c *Client) Devices(ctx context.Context, fields *DeviceFieldsOpts) (deviceL
 	// If status code was not successful, return the error.
 	// TODO: Change the check for the StatusCode to include other 2XX success codes.
 	if resp.StatusCode != http.StatusOK {
-		return nil, HandleErrorResponse(b, resp)
+		return nil, handleErrorResponse(b, resp)
 	}
 
 	var devices GetDevicesResponse
@@ -195,7 +186,7 @@ func (c *Client) Device(ctx context.Context, deviceID string, fields *DeviceFiel
 	// If status code was not successful, return the error.
 	// TODO: Change the check for the StatusCode to include other 2XX success codes.
 	if resp.StatusCode != http.StatusOK {
-		return nil, HandleErrorResponse(b, resp)
+		return nil, handleErrorResponse(b, resp)
 	}
 
 	err = json.Unmarshal(b, &device)
@@ -222,13 +213,10 @@ func (c *Client) DeleteDevice(ctx context.Context, deviceID string) (err error)
 	if err != nil {
 		return err
 	}
-
-	log.Printf("RESP: %di, path: %s", resp.StatusCode, path)
-
 	// If status code was not successful, return the error.
 	// TODO: Change the check for the StatusCode to include other 2XX success codes.
 	if resp.StatusCode != http.StatusOK {
-		return HandleErrorResponse(b, resp)
+		return handleErrorResponse(b, resp)
 	}
 	return nil
 }
@@ -260,7 +248,7 @@ func (c *Client) SetAuthorized(ctx context.Context, deviceID string, authorized
 	// If status code was not successful, return the error.
 	// TODO: Change the check for the StatusCode to include other 2XX success codes.
 	if resp.StatusCode != http.StatusOK {
-		return HandleErrorResponse(b, resp)
+		return handleErrorResponse(b, resp)
 	}
 
 	return nil
@@ -288,7 +276,7 @@ func (c *Client) SetTags(ctx context.Context, deviceID string, tags []string) er
 	// If status code was not successful, return the error.
 	// TODO: Change the check for the StatusCode to include other 2XX success codes.
 	if resp.StatusCode != http.StatusOK {
-		return HandleErrorResponse(b, resp)
+		return handleErrorResponse(b, resp)
 	}
 
 	return nil

client/tailscale/dns.go

@@ -44,7 +44,7 @@ type DNSPreferences struct {
 }
 
 func (c *Client) dnsGETRequest(ctx context.Context, endpoint string) ([]byte, error) {
-	path := c.BuildTailnetURL("dns", endpoint)
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/dns/%s", c.baseURL(), c.tailnet, endpoint)
 	req, err := http.NewRequestWithContext(ctx, "GET", path, nil)
 	if err != nil {
 		return nil, err
@@ -57,14 +57,14 @@ func (c *Client) dnsGETRequest(ctx context.Context, endpoint string) ([]byte, er
 	// If status code was not successful, return the error.
 	// TODO: Change the check for the StatusCode to include other 2XX success codes.
 	if resp.StatusCode != http.StatusOK {
-		return nil, HandleErrorResponse(b, resp)
+		return nil, handleErrorResponse(b, resp)
 	}
 
 	return b, nil
 }
 
 func (c *Client) dnsPOSTRequest(ctx context.Context, endpoint string, postData any) ([]byte, error) {
-	path := c.BuildTailnetURL("dns", endpoint)
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/dns/%s", c.baseURL(), c.tailnet, endpoint)
 	data, err := json.Marshal(&postData)
 	if err != nil {
 		return nil, err
@@ -84,7 +84,7 @@ func (c *Client) dnsPOSTRequest(ctx context.Context, endpoint string, postData a
 	// If status code was not successful, return the error.
 	// TODO: Change the check for the StatusCode to include other 2XX success codes.
 	if resp.StatusCode != http.StatusOK {
-		return nil, HandleErrorResponse(b, resp)
+		return nil, handleErrorResponse(b, resp)
 	}
 
 	return b, nil

client/tailscale/example/servetls/servetls.go

@@ -11,14 +11,13 @@ import (
 	"log"
 	"net/http"
 
-	"tailscale.com/client/local"
+	"tailscale.com/client/tailscale"
 )
 
 func main() {
-	var lc local.Client
 	s := &http.Server{
 		TLSConfig: &tls.Config{
-			GetCertificate: lc.GetCertificate,
+			GetCertificate: tailscale.GetCertificate,
 		},
 		Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
 			io.WriteString(w, "<h1>Hello from Tailscale!</h1> It works.")

client/tailscale/keys.go

@@ -40,7 +40,7 @@ type KeyDeviceCreateCapabilities struct {
 
 // Keys returns the list of keys for the current user.
 func (c *Client) Keys(ctx context.Context) ([]string, error) {
-	path := c.BuildTailnetURL("keys")
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/keys", c.baseURL(), c.tailnet)
 	req, err := http.NewRequestWithContext(ctx, "GET", path, nil)
 	if err != nil {
 		return nil, err
@@ -51,7 +51,7 @@ func (c *Client) Keys(ctx context.Context) ([]string, error) {
 		return nil, err
 	}
 	if resp.StatusCode != http.StatusOK {
-		return nil, HandleErrorResponse(b, resp)
+		return nil, handleErrorResponse(b, resp)
 	}
 
 	var keys struct {
@@ -99,7 +99,7 @@ func (c *Client) CreateKeyWithExpiry(ctx context.Context, caps KeyCapabilities,
 		return "", nil, err
 	}
 
-	path := c.BuildTailnetURL("keys")
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/keys", c.baseURL(), c.tailnet)
 	req, err := http.NewRequestWithContext(ctx, "POST", path, bytes.NewReader(bs))
 	if err != nil {
 		return "", nil, err
@@ -110,7 +110,7 @@ func (c *Client) CreateKeyWithExpiry(ctx context.Context, caps KeyCapabilities,
 		return "", nil, err
 	}
 	if resp.StatusCode != http.StatusOK {
-		return "", nil, HandleErrorResponse(b, resp)
+		return "", nil, handleErrorResponse(b, resp)
 	}
 
 	var key struct {
@@ -126,7 +126,7 @@ func (c *Client) CreateKeyWithExpiry(ctx context.Context, caps KeyCapabilities,
 // Key returns the metadata for the given key ID. Currently, capabilities are
 // only returned for auth keys, API keys only return general metadata.
 func (c *Client) Key(ctx context.Context, id string) (*Key, error) {
-	path := c.BuildTailnetURL("keys", id)
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/keys/%s", c.baseURL(), c.tailnet, id)
 	req, err := http.NewRequestWithContext(ctx, "GET", path, nil)
 	if err != nil {
 		return nil, err
@@ -137,7 +137,7 @@ func (c *Client) Key(ctx context.Context, id string) (*Key, error) {
 		return nil, err
 	}
 	if resp.StatusCode != http.StatusOK {
-		return nil, HandleErrorResponse(b, resp)
+		return nil, handleErrorResponse(b, resp)
 	}
 
 	var key Key
@@ -149,7 +149,7 @@ func (c *Client) Key(ctx context.Context, id string) (*Key, error) {
 
 // DeleteKey deletes the key with the given ID.
 func (c *Client) DeleteKey(ctx context.Context, id string) error {
-	path := c.BuildTailnetURL("keys", id)
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s/keys/%s", c.baseURL(), c.tailnet, id)
 	req, err := http.NewRequestWithContext(ctx, "DELETE", path, nil)
 	if err != nil {
 		return err
@@ -160,7 +160,7 @@ func (c *Client) DeleteKey(ctx context.Context, id string) error {
 		return err
 	}
 	if resp.StatusCode != http.StatusOK {
-		return HandleErrorResponse(b, resp)
+		return handleErrorResponse(b, resp)
 	}
 	return nil
 }

client/tailscale/localclient_aliases.go

@@ -1,106 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-package tailscale
-
-import (
-	"context"
-	"crypto/tls"
-
-	"tailscale.com/client/local"
-	"tailscale.com/client/tailscale/apitype"
-	"tailscale.com/ipn/ipnstate"
-)
-
-// ErrPeerNotFound is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-var ErrPeerNotFound = local.ErrPeerNotFound
-
-// LocalClient is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-type LocalClient = local.Client
-
-// IPNBusWatcher is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-type IPNBusWatcher = local.IPNBusWatcher
-
-// BugReportOpts is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-type BugReportOpts = local.BugReportOpts
-
-// DebugPortMapOpts is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-type DebugPortmapOpts = local.DebugPortmapOpts
-
-// PingOpts is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-type PingOpts = local.PingOpts
-
-// GetCertificate is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-func GetCertificate(hi *tls.ClientHelloInfo) (*tls.Certificate, error) {
-	return local.GetCertificate(hi)
-}
-
-// SetVersionMismatchHandler is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-func SetVersionMismatchHandler(f func(clientVer, serverVer string)) {
-	local.SetVersionMismatchHandler(f)
-}
-
-// IsAccessDeniedError is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-func IsAccessDeniedError(err error) bool {
-	return local.IsAccessDeniedError(err)
-}
-
-// IsPreconditionsFailedError is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-func IsPreconditionsFailedError(err error) bool {
-	return local.IsPreconditionsFailedError(err)
-}
-
-// WhoIs is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-func WhoIs(ctx context.Context, remoteAddr string) (*apitype.WhoIsResponse, error) {
-	return local.WhoIs(ctx, remoteAddr)
-}
-
-// Status is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-func Status(ctx context.Context) (*ipnstate.Status, error) {
-	return local.Status(ctx)
-}
-
-// StatusWithoutPeers is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-func StatusWithoutPeers(ctx context.Context) (*ipnstate.Status, error) {
-	return local.StatusWithoutPeers(ctx)
-}
-
-// CertPair is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-func CertPair(ctx context.Context, domain string) (certPEM, keyPEM []byte, err error) {
-	return local.CertPair(ctx, domain)
-}
-
-// ExpandSNIName is an alias for tailscale.com/client/local.
-//
-// Deprecated: import tailscale.com/client/local instead.
-func ExpandSNIName(ctx context.Context, name string) (fqdn string, ok bool) {
-	return local.ExpandSNIName(ctx, name)
-}

client/tailscale/localclient_test.go

@@ -0,0 +1,42 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build go1.19
+
+package tailscale
+
+import (
+	"testing"
+
+	"tailscale.com/tstest/deptest"
+)
+
+func TestGetServeConfigFromJSON(t *testing.T) {
+	sc, err := getServeConfigFromJSON([]byte("null"))
+	if sc != nil {
+		t.Errorf("want nil for null")
+	}
+	if err != nil {
+		t.Errorf("reading null: %v", err)
+	}
+
+	sc, err = getServeConfigFromJSON([]byte(`{"TCP":{}}`))
+	if err != nil {
+		t.Errorf("reading object: %v", err)
+	} else if sc == nil {
+		t.Errorf("want non-nil for object")
+	} else if sc.TCP == nil {
+		t.Errorf("want non-nil TCP for object")
+	}
+}
+
+func TestDeps(t *testing.T) {
+	deptest.DepChecker{
+		BadDeps: map[string]string{
+			// Make sure we don't again accidentally bring in a dependency on
+			// TailFS or its transitive dependencies
+			"tailscale.com/tailfs/tailfsimpl": "https://github.com/tailscale/tailscale/pull/10631",
+			"github.com/tailscale/gowebdav":   "https://github.com/tailscale/tailscale/pull/10631",
+		},
+	}.Check(t)
+}

client/tailscale/required_version.go

@@ -1,10 +1,10 @@
 // Copyright (c) Tailscale Inc & AUTHORS
 // SPDX-License-Identifier: BSD-3-Clause
 
-//go:build !go1.23
+//go:build !go1.21
 
 package tailscale
 
 func init() {
-	you_need_Go_1_23_to_compile_Tailscale()
+	you_need_Go_1_21_to_compile_Tailscale()
 }

client/tailscale/routes.go

@@ -44,7 +44,7 @@ func (c *Client) Routes(ctx context.Context, deviceID string) (routes *Routes, e
 	// If status code was not successful, return the error.
 	// TODO: Change the check for the StatusCode to include other 2XX success codes.
 	if resp.StatusCode != http.StatusOK {
-		return nil, HandleErrorResponse(b, resp)
+		return nil, handleErrorResponse(b, resp)
 	}
 
 	var sr Routes
@@ -84,7 +84,7 @@ func (c *Client) SetRoutes(ctx context.Context, deviceID string, subnets []netip
 	// If status code was not successful, return the error.
 	// TODO: Change the check for the StatusCode to include other 2XX success codes.
 	if resp.StatusCode != http.StatusOK {
-		return nil, HandleErrorResponse(b, resp)
+		return nil, handleErrorResponse(b, resp)
 	}
 
 	var srr *Routes

client/tailscale/tailnet.go

@@ -9,6 +9,7 @@ import (
 	"context"
 	"fmt"
 	"net/http"
+	"net/url"
 
 	"tailscale.com/util/httpm"
 )
@@ -21,7 +22,7 @@ func (c *Client) TailnetDeleteRequest(ctx context.Context, tailnetID string) (er
 		}
 	}()
 
-	path := c.BuildTailnetURL("tailnet")
+	path := fmt.Sprintf("%s/api/v2/tailnet/%s", c.baseURL(), url.PathEscape(string(tailnetID)))
 	req, err := http.NewRequestWithContext(ctx, httpm.DELETE, path, nil)
 	if err != nil {
 		return err
@@ -34,7 +35,7 @@ func (c *Client) TailnetDeleteRequest(ctx context.Context, tailnetID string) (er
 	}
 
 	if resp.StatusCode != http.StatusOK {
-		return HandleErrorResponse(b, resp)
+		return handleErrorResponse(b, resp)
 	}
 
 	return nil

client/tailscale/tailscale.go

@@ -3,12 +3,11 @@
 
 //go:build go1.19
 
-// Package tailscale contains a Go client for the Tailscale control plane API.
+// Package tailscale contains Go clients for the Tailscale LocalAPI and
+// Tailscale control plane API.
 //
-// This package is only intended for internal and transitional use.
-//
-// Deprecated: the official control plane client is available at
-// tailscale.com/client/tailscale/v2.
+// Warning: this package is in development and makes no API compatibility
+// promises as of 2022-04-29. It is subject to change at any time.
 package tailscale
 
 import (
@@ -17,12 +16,13 @@ import (
 	"fmt"
 	"io"
 	"net/http"
-	"net/url"
-	"path"
 )
 
 // I_Acknowledge_This_API_Is_Unstable must be set true to use this package
-// for now. This package is being replaced by tailscale.com/client/tailscale/v2.
+// for now. It was added 2022-04-29 when it was moved to this git repo
+// and will be removed when the public API has settled.
+//
+// TODO(bradfitz): remove this after the we're happy with the public API.
 var I_Acknowledge_This_API_Is_Unstable = false
 
 // TODO: use url.PathEscape() for deviceID and tailnets when constructing requests.
@@ -36,8 +36,6 @@ const maxReadSize = 10 << 20
 //
 // Use NewClient to instantiate one. Exported fields should be set before
 // the client is used and not changed thereafter.
-//
-// Deprecated: use tailscale.com/client/tailscale/v2 instead.
 type Client struct {
 	// tailnet is the globally unique identifier for a Tailscale network, such
 	// as "example.com" or "user@gmail.com".
@@ -53,9 +51,6 @@ type Client struct {
 	// HTTPClient optionally specifies an alternate HTTP client to use.
 	// If nil, http.DefaultClient is used.
 	HTTPClient *http.Client
-
-	// UserAgent optionally specifies an alternate User-Agent header
-	UserAgent string
 }
 
 func (c *Client) httpClient() *http.Client {
@@ -65,46 +60,6 @@ func (c *Client) httpClient() *http.Client {
 	return http.DefaultClient
 }
 
-// BuildURL builds a url to http(s)://<apiserver>/api/v2/<slash-separated-pathElements>
-// using the given pathElements. It url escapes each path element, so the
-// caller doesn't need to worry about that. The last item of pathElements can
-// be of type url.Values to add a query string to the URL.
-//
-// For example, BuildURL(devices, 5) with the default server URL would result in
-// https://api.tailscale.com/api/v2/devices/5.
-func (c *Client) BuildURL(pathElements ...any) string {
-	elem := make([]string, 1, len(pathElements)+1)
-	elem[0] = "/api/v2"
-	var query string
-	for i, pathElement := range pathElements {
-		if uv, ok := pathElement.(url.Values); ok && i == len(pathElements)-1 {
-			query = uv.Encode()
-		} else {
-			elem = append(elem, url.PathEscape(fmt.Sprint(pathElement)))
-		}
-	}
-	url := c.baseURL() + path.Join(elem...)
-	if query != "" {
-		url += "?" + query
-	}
-	return url
-}
-
-// BuildTailnetURL builds a url to http(s)://<apiserver>/api/v2/tailnet/<tailnet>/<slash-separated-pathElements>
-// using the given pathElements. It url escapes each path element, so the
-// caller doesn't need to worry about that. The last item of pathElements can
-// be of type url.Values to add a query string to the URL.
-//
-// For example, BuildTailnetURL(policy, validate) with the default server URL and a tailnet of "example.com"
-// would result in https://api.tailscale.com/api/v2/tailnet/example.com/policy/validate.
-func (c *Client) BuildTailnetURL(pathElements ...any) string {
-	allElements := make([]any, 2, len(pathElements)+2)
-	allElements[0] = "tailnet"
-	allElements[1] = c.tailnet
-	allElements = append(allElements, pathElements...)
-	return c.BuildURL(allElements...)
-}
-
 func (c *Client) baseURL() string {
 	if c.BaseURL != "" {
 		return c.BaseURL
@@ -140,13 +95,10 @@ func (c *Client) setAuth(r *http.Request) {
 // If httpClient is nil, then http.DefaultClient is used.
 // "api.tailscale.com" is set as the BaseURL for the returned client
 // and can be changed manually by the user.
-//
-// Deprecated: use tailscale.com/client/tailscale/v2 instead.
 func NewClient(tailnet string, auth AuthMethod) *Client {
 	return &Client{
-		tailnet:   tailnet,
-		auth:      auth,
-		UserAgent: "tailscale-client-oss",
+		tailnet: tailnet,
+		auth:    auth,
 	}
 }
 
@@ -158,16 +110,17 @@ func (c *Client) Do(req *http.Request) (*http.Response, error) {
 		return nil, errors.New("use of Client without setting I_Acknowledge_This_API_Is_Unstable")
 	}
 	c.setAuth(req)
-	if c.UserAgent != "" {
-		req.Header.Set("User-Agent", c.UserAgent)
-	}
 	return c.httpClient().Do(req)
 }
 
 // sendRequest add the authentication key to the request and sends it. It
 // receives the response and reads up to 10MB of it.
 func (c *Client) sendRequest(req *http.Request) ([]byte, *http.Response, error) {
-	resp, err := c.Do(req)
+	if !I_Acknowledge_This_API_Is_Unstable {
+		return nil, nil, errors.New("use of Client without setting I_Acknowledge_This_API_Is_Unstable")
+	}
+	c.setAuth(req)
+	resp, err := c.httpClient().Do(req)
 	if err != nil {
 		return nil, resp, err
 	}
@@ -192,14 +145,12 @@ func (e ErrResponse) Error() string {
 	return fmt.Sprintf("Status: %d, Message: %q", e.Status, e.Message)
 }
 
-// HandleErrorResponse decodes the error message from the server and returns
+// handleErrorResponse decodes the error message from the server and returns
 // an ErrResponse from it.
-//
-// Deprecated: use tailscale.com/client/tailscale/v2 instead.
-func HandleErrorResponse(b []byte, resp *http.Response) error {
+func handleErrorResponse(b []byte, resp *http.Response) error {
 	var errResp ErrResponse
 	if err := json.Unmarshal(b, &errResp); err != nil {
-		return fmt.Errorf("json.Unmarshal %q: %w", b, err)
+		return err
 	}
 	errResp.Status = resp.StatusCode
 	return errResp

client/tailscale/tailscale_test.go

@@ -1,86 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-package tailscale
-
-import (
-	"net/url"
-	"testing"
-)
-
-func TestClientBuildURL(t *testing.T) {
-	c := Client{BaseURL: "http://127.0.0.1:1234"}
-	for _, tt := range []struct {
-		desc     string
-		elements []any
-		want     string
-	}{
-		{
-			desc:     "single-element",
-			elements: []any{"devices"},
-			want:     "http://127.0.0.1:1234/api/v2/devices",
-		},
-		{
-			desc:     "multiple-elements",
-			elements: []any{"tailnet", "example.com"},
-			want:     "http://127.0.0.1:1234/api/v2/tailnet/example.com",
-		},
-		{
-			desc:     "escape-element",
-			elements: []any{"tailnet", "example dot com?foo=bar"},
-			want:     `http://127.0.0.1:1234/api/v2/tailnet/example%20dot%20com%3Ffoo=bar`,
-		},
-		{
-			desc:     "url.Values",
-			elements: []any{"tailnet", "example.com", "acl", url.Values{"details": {"1"}}},
-			want:     `http://127.0.0.1:1234/api/v2/tailnet/example.com/acl?details=1`,
-		},
-	} {
-		t.Run(tt.desc, func(t *testing.T) {
-			got := c.BuildURL(tt.elements...)
-			if got != tt.want {
-				t.Errorf("got %q, want %q", got, tt.want)
-			}
-		})
-	}
-}
-
-func TestClientBuildTailnetURL(t *testing.T) {
-	c := Client{
-		BaseURL: "http://127.0.0.1:1234",
-		tailnet: "example.com",
-	}
-	for _, tt := range []struct {
-		desc     string
-		elements []any
-		want     string
-	}{
-		{
-			desc:     "single-element",
-			elements: []any{"devices"},
-			want:     "http://127.0.0.1:1234/api/v2/tailnet/example.com/devices",
-		},
-		{
-			desc:     "multiple-elements",
-			elements: []any{"devices", 123},
-			want:     "http://127.0.0.1:1234/api/v2/tailnet/example.com/devices/123",
-		},
-		{
-			desc:     "escape-element",
-			elements: []any{"foo bar?baz=qux"},
-			want:     `http://127.0.0.1:1234/api/v2/tailnet/example.com/foo%20bar%3Fbaz=qux`,
-		},
-		{
-			desc:     "url.Values",
-			elements: []any{"acl", url.Values{"details": {"1"}}},
-			want:     `http://127.0.0.1:1234/api/v2/tailnet/example.com/acl?details=1`,
-		},
-	} {
-		t.Run(tt.desc, func(t *testing.T) {
-			got := c.BuildTailnetURL(tt.elements...)
-			if got != tt.want {
-				t.Errorf("got %q, want %q", got, tt.want)
-			}
-		})
-	}
-}

client/web/auth.go

@@ -11,7 +11,6 @@ import (
 	"fmt"
 	"net/http"
 	"net/url"
-	"slices"
 	"strings"
 	"time"
 
@@ -223,7 +222,7 @@ func (s *Server) awaitUserAuth(ctx context.Context, session *browserSession) err
 
 func (s *Server) newSessionID() (string, error) {
 	raw := make([]byte, 16)
-	for range 5 {
+	for i := 0; i < 5; i++ {
 		if _, err := rand.Read(raw); err != nil {
 			return "", err
 		}
@@ -235,12 +234,7 @@ func (s *Server) newSessionID() (string, error) {
 	return "", errors.New("too many collisions generating new session; please refresh page")
 }
 
-// peerCapabilities holds information about what a source
-// peer is allowed to edit via the web UI.
-//
-// map value is true if the peer can edit the given feature.
-// Only capFeatures included in validCaps will be included.
-type peerCapabilities map[capFeature]bool
+type peerCapabilities map[capFeature]bool // value is true if the peer can edit the given feature
 
 // canEdit is true if the peerCapabilities grant edit access
 // to the given feature.
@@ -254,47 +248,21 @@ func (p peerCapabilities) canEdit(feature capFeature) bool {
 	return p[feature]
 }
 
-// isEmpty is true if p is either nil or has no capabilities
-// with value true.
-func (p peerCapabilities) isEmpty() bool {
-	if p == nil {
-		return true
-	}
-	for _, v := range p {
-		if v == true {
-			return false
-		}
-	}
-	return true
-}
-
 type capFeature string
 
 const (
 	// The following values should not be edited.
 	// New caps can be added, but existing ones should not be changed,
 	// as these exact values are used by users in tailnet policy files.
-	//
-	// IMPORTANT: When adding a new cap, also update validCaps slice below.
 
-	capFeatureAll       capFeature = "*"         // grants peer management of all features
-	capFeatureSSH       capFeature = "ssh"       // grants peer SSH server management
-	capFeatureSubnets   capFeature = "subnets"   // grants peer subnet routes management
-	capFeatureExitNodes capFeature = "exitnodes" // grants peer ability to advertise-as and use exit nodes
-	capFeatureAccount   capFeature = "account"   // grants peer ability to turn on auto updates and log out of node
+	capFeatureAll      capFeature = "*"        // grants peer management of all features
+	capFeatureFunnel   capFeature = "funnel"   // grants peer serve/funnel management
+	capFeatureSSH      capFeature = "ssh"      // grants peer SSH server management
+	capFeatureSubnet   capFeature = "subnet"   // grants peer subnet routes management
+	capFeatureExitNode capFeature = "exitnode" // grants peer ability to advertise-as and use exit nodes
+	capFeatureAccount  capFeature = "account"  // grants peer ability to turn on auto updates and log out of node
 )
 
-// validCaps contains the list of valid capabilities used in the web client.
-// Any capabilities included in a peer's grants that do not fall into this
-// list will be ignored.
-var validCaps []capFeature = []capFeature{
-	capFeatureAll,
-	capFeatureSSH,
-	capFeatureSubnets,
-	capFeatureExitNodes,
-	capFeatureAccount,
-}
-
 type capRule struct {
 	CanEdit []string `json:"canEdit,omitempty"` // list of features peer is allowed to edit
 }
@@ -302,13 +270,7 @@ type capRule struct {
 // toPeerCapabilities parses out the web ui capabilities from the
 // given whois response.
 func toPeerCapabilities(status *ipnstate.Status, whois *apitype.WhoIsResponse) (peerCapabilities, error) {
-	if whois == nil || status == nil {
-		return peerCapabilities{}, nil
-	}
-	if whois.Node.IsTagged() {
-		// We don't allow management *from* tagged nodes, so ignore caps.
-		// The web client auth flow relies on having a true user identity
-		// that can be verified through login.
+	if whois == nil {
 		return peerCapabilities{}, nil
 	}
 
@@ -329,10 +291,7 @@ func toPeerCapabilities(status *ipnstate.Status, whois *apitype.WhoIsResponse) (
 	}
 	for _, c := range rules {
 		for _, f := range c.CanEdit {
-			cap := capFeature(strings.ToLower(f))
-			if slices.Contains(validCaps, cap) {
-				caps[cap] = true
-			}
+			caps[capFeature(strings.ToLower(f))] = true
 		}
 	}
 	return caps, nil

client/web/package.json

@@ -3,10 +3,9 @@
   "version": "0.0.1",
   "license": "BSD-3-Clause",
   "engines": {
-    "node": "18.20.4",
+    "node": "18.16.1",
     "yarn": "1.22.19"
   },
-  "type": "module",
   "private": true,
   "dependencies": {
     "@radix-ui/react-collapsible": "^1.0.3",
@@ -20,10 +19,9 @@
     "zustand": "^4.4.7"
   },
   "devDependencies": {
-    "@types/node": "^18.16.1",
     "@types/react": "^18.0.20",
     "@types/react-dom": "^18.0.6",
-    "@vitejs/plugin-react-swc": "^3.6.0",
+    "@vitejs/plugin-react-swc": "^3.3.2",
     "autoprefixer": "^10.4.15",
     "eslint": "^8.23.1",
     "eslint-config-react-app": "^7.0.1",
@@ -33,15 +31,12 @@
     "prettier": "^2.5.1",
     "prettier-plugin-organize-imports": "^3.2.2",
     "tailwindcss": "^3.3.3",
-    "typescript": "^5.3.3",
-    "vite": "^5.1.7",
-    "vite-plugin-svgr": "^4.2.0",
+    "typescript": "^4.7.4",
+    "vite": "^4.5.2",
+    "vite-plugin-rewrite-all": "^1.0.1",
+    "vite-plugin-svgr": "^3.2.0",
     "vite-tsconfig-paths": "^3.5.0",
-    "vitest": "^1.3.1"
-  },
-  "resolutions": {
-    "@typescript-eslint/eslint-plugin": "^6.2.1",
-    "@typescript-eslint/parser": "^6.2.1"
+    "vitest": "^0.32.0"
   },
   "scripts": {
     "build": "vite build",

client/web/src/components/address-copy-card.tsx

@@ -4,8 +4,8 @@
 import * as Primitive from "@radix-ui/react-popover"
 import cx from "classnames"
 import React, { useCallback } from "react"
-import ChevronDown from "src/assets/icons/chevron-down.svg?react"
-import Copy from "src/assets/icons/copy.svg?react"
+import { ReactComponent as ChevronDown } from "src/assets/icons/chevron-down.svg"
+import { ReactComponent as Copy } from "src/assets/icons/copy.svg"
 import NiceIP from "src/components/nice-ip"
 import useToaster from "src/hooks/toaster"
 import Button from "src/ui/button"

client/web/src/components/app.tsx

@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import React from "react"
-import TailscaleIcon from "src/assets/icons/tailscale-icon.svg?react"
+import { ReactComponent as TailscaleIcon } from "src/assets/icons/tailscale-icon.svg"
 import LoginToggle from "src/components/login-toggle"
 import DeviceDetailsView from "src/components/views/device-details-view"
 import DisconnectedView from "src/components/views/disconnected-view"
@@ -11,8 +11,8 @@ import LoginView from "src/components/views/login-view"
 import SSHView from "src/components/views/ssh-view"
 import SubnetRouterView from "src/components/views/subnet-router-view"
 import { UpdatingView } from "src/components/views/updating-view"
-import useAuth, { AuthResponse, canEdit } from "src/hooks/auth"
-import { Feature, NodeData, featureDescription } from "src/types"
+import useAuth, { AuthResponse } from "src/hooks/auth"
+import { Feature, featureDescription, NodeData } from "src/types"
 import Card from "src/ui/card"
 import EmptyState from "src/ui/empty-state"
 import LoadingDots from "src/ui/loading-dots"
@@ -56,19 +56,16 @@ function WebClient({
         <Header node={node} auth={auth} newSession={newSession} />
         <Switch>
           <Route path="/">
-            <HomeView node={node} auth={auth} />
+            <HomeView readonly={!auth.canManageNode} node={node} />
           </Route>
           <Route path="/details">
-            <DeviceDetailsView node={node} auth={auth} />
+            <DeviceDetailsView readonly={!auth.canManageNode} node={node} />
           </Route>
           <FeatureRoute path="/subnets" feature="advertise-routes" node={node}>
-            <SubnetRouterView
-              readonly={!canEdit("subnets", auth)}
-              node={node}
-            />
+            <SubnetRouterView readonly={!auth.canManageNode} node={node} />
           </FeatureRoute>
           <FeatureRoute path="/ssh" feature="ssh" node={node}>
-            <SSHView readonly={!canEdit("ssh", auth)} node={node} />
+            <SSHView readonly={!auth.canManageNode} node={node} />
           </FeatureRoute>
           {/* <Route path="/serve">Share local content</Route> */}
           <FeatureRoute path="/update" feature="auto-update" node={node}>

client/web/src/components/exit-node-selector.tsx

@@ -4,8 +4,8 @@
 import cx from "classnames"
 import React, { useCallback, useEffect, useMemo, useRef, useState } from "react"
 import { useAPI } from "src/api"
-import Check from "src/assets/icons/check.svg?react"
-import ChevronDown from "src/assets/icons/chevron-down.svg?react"
+import { ReactComponent as Check } from "src/assets/icons/check.svg"
+import { ReactComponent as ChevronDown } from "src/assets/icons/chevron-down.svg"
 import useExitNodes, {
   noExitNode,
   runAsExitNode,

client/web/src/components/login-toggle.tsx

@@ -2,17 +2,15 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import cx from "classnames"
-import React, { useCallback, useMemo, useState } from "react"
-import ChevronDown from "src/assets/icons/chevron-down.svg?react"
-import Eye from "src/assets/icons/eye.svg?react"
-import User from "src/assets/icons/user.svg?react"
-import { AuthResponse, hasAnyEditCapabilities } from "src/hooks/auth"
-import { useTSWebConnected } from "src/hooks/ts-web-connected"
+import React, { useCallback, useEffect, useState } from "react"
+import { ReactComponent as ChevronDown } from "src/assets/icons/chevron-down.svg"
+import { ReactComponent as Eye } from "src/assets/icons/eye.svg"
+import { ReactComponent as User } from "src/assets/icons/user.svg"
+import { AuthResponse, AuthType } from "src/hooks/auth"
 import { NodeData } from "src/types"
 import Button from "src/ui/button"
 import Popover from "src/ui/popover"
 import ProfilePic from "src/ui/profile-pic"
-import { assertNever, isHTTPS } from "src/utils/util"
 
 export default function LoginToggle({
   node,
@@ -24,29 +22,12 @@ export default function LoginToggle({
   newSession: () => Promise<void>
 }) {
   const [open, setOpen] = useState<boolean>(false)
-  const { tsWebConnected, checkTSWebConnection } = useTSWebConnected(
-    auth.serverMode,
-    node.IPv4
-  )
 
   return (
     <Popover
-      className="p-3 bg-white rounded-lg shadow flex flex-col max-w-[317px]"
+      className="p-3 bg-white rounded-lg shadow flex flex-col gap-2 max-w-[317px]"
       content={
-        auth.serverMode === "readonly" ? (
-          <ReadonlyModeContent auth={auth} />
-        ) : auth.serverMode === "login" ? (
-          <LoginModeContent
-            auth={auth}
-            node={node}
-            tsWebConnected={tsWebConnected}
-            checkTSWebConnection={checkTSWebConnection}
-          />
-        ) : auth.serverMode === "manage" ? (
-          <ManageModeContent auth={auth} node={node} newSession={newSession} />
-        ) : (
-          assertNever(auth.serverMode)
-        )
+        <LoginPopoverContent node={node} auth={auth} newSession={newSession} />
       }
       side="bottom"
       align="end"
@@ -54,303 +35,228 @@ export default function LoginToggle({
       onOpenChange={setOpen}
       asChild
     >
-      <div>
-        {auth.authorized ? (
-          <TriggerWhenManaging auth={auth} open={open} setOpen={setOpen} />
-        ) : (
-          <TriggerWhenReading auth={auth} open={open} setOpen={setOpen} />
-        )}
-      </div>
+      {!auth.canManageNode ? (
+        <button
+          className={cx(
+            "pl-3 py-1 bg-gray-700 rounded-full flex justify-start items-center h-[34px]",
+            { "pr-1": auth.viewerIdentity, "pr-3": !auth.viewerIdentity }
+          )}
+          onClick={() => setOpen(!open)}
+        >
+          <Eye />
+          <div className="text-white leading-snug ml-2 mr-1">Viewing</div>
+          <ChevronDown className="stroke-white w-[15px] h-[15px]" />
+          {auth.viewerIdentity && (
+            <ProfilePic
+              className="ml-2"
+              size="medium"
+              url={auth.viewerIdentity.profilePicUrl}
+            />
+          )}
+        </button>
+      ) : (
+        <div
+          className={cx(
+            "w-[34px] h-[34px] p-1 rounded-full justify-center items-center inline-flex hover:bg-gray-300",
+            {
+              "bg-transparent": !open,
+              "bg-gray-300": open,
+            }
+          )}
+        >
+          <button onClick={() => setOpen(!open)}>
+            <ProfilePic
+              size="medium"
+              url={auth.viewerIdentity?.profilePicUrl}
+            />
+          </button>
+        </div>
+      )}
     </Popover>
   )
 }
 
-/**
- * TriggerWhenManaging is displayed as the trigger for the login popover
- * when the user has an active authorized managment session.
- */
-function TriggerWhenManaging({
-  auth,
-  open,
-  setOpen,
-}: {
-  auth: AuthResponse
-  open: boolean
-  setOpen: (next: boolean) => void
-}) {
-  return (
-    <div
-      className={cx(
-        "w-[34px] h-[34px] p-1 rounded-full justify-center items-center inline-flex hover:bg-gray-300",
-        {
-          "bg-transparent": !open,
-          "bg-gray-300": open,
-        }
-      )}
-    >
-      <button onClick={() => setOpen(!open)}>
-        <ProfilePic size="medium" url={auth.viewerIdentity?.profilePicUrl} />
-      </button>
-    </div>
-  )
-}
-
-/**
- * TriggerWhenReading is displayed as the trigger for the login popover
- * when the user is currently in read mode (doesn't have an authorized
- * management session).
- */
-function TriggerWhenReading({
-  auth,
-  open,
-  setOpen,
-}: {
-  auth: AuthResponse
-  open: boolean
-  setOpen: (next: boolean) => void
-}) {
-  return (
-    <button
-      className={cx(
-        "pl-3 py-1 bg-gray-700 rounded-full flex justify-start items-center h-[34px]",
-        { "pr-1": auth.viewerIdentity, "pr-3": !auth.viewerIdentity }
-      )}
-      onClick={() => setOpen(!open)}
-    >
-      <Eye />
-      <div className="text-white leading-snug ml-2 mr-1">Viewing</div>
-      <ChevronDown className="stroke-white w-[15px] h-[15px]" />
-      {auth.viewerIdentity && (
-        <ProfilePic
-          className="ml-2"
-          size="medium"
-          url={auth.viewerIdentity.profilePicUrl}
-        />
-      )}
-    </button>
-  )
-}
-
-/**
- * PopoverContentHeader is the header for the login popover.
- */
-function PopoverContentHeader({ auth }: { auth: AuthResponse }) {
-  return (
-    <div className="text-black text-sm font-medium leading-tight mb-1">
-      {auth.authorized ? "Managing" : "Viewing"}
-      {auth.viewerIdentity && ` as ${auth.viewerIdentity.loginName}`}
-    </div>
-  )
-}
-
-/**
- * PopoverContentFooter is the footer for the login popover.
- */
-function PopoverContentFooter({ auth }: { auth: AuthResponse }) {
-  return auth.viewerIdentity ? (
-    <>
-      <hr className="my-2" />
-      <div className="flex items-center">
-        <User className="flex-shrink-0" />
-        <p className="text-gray-500 text-xs ml-2">
-          We recognize you because you are accessing this page from{" "}
-          <span className="font-medium">
-            {auth.viewerIdentity.nodeName || auth.viewerIdentity.nodeIP}
-          </span>
-        </p>
-      </div>
-    </>
-  ) : null
-}
-
-/**
- * ReadonlyModeContent is the body of the login popover when the web
- * client is being run in "readonly" server mode.
- */
-function ReadonlyModeContent({ auth }: { auth: AuthResponse }) {
-  return (
-    <>
-      <PopoverContentHeader auth={auth} />
-      <p className="text-gray-500 text-xs">
-        This web interface is running in read-only mode.{" "}
-        <a
-          href="https://tailscale.com/s/web-client-read-only"
-          className="text-blue-700"
-          target="_blank"
-          rel="noreferrer"
-        >
-          Learn more &rarr;
-        </a>
-      </p>
-      <PopoverContentFooter auth={auth} />
-    </>
-  )
-}
-
-/**
- * LoginModeContent is the body of the login popover when the web
- * client is being run in "login" server mode.
- */
-function LoginModeContent({
+function LoginPopoverContent({
   node,
-  auth,
-  tsWebConnected,
-  checkTSWebConnection,
-}: {
-  node: NodeData
-  auth: AuthResponse
-  tsWebConnected: boolean
-  checkTSWebConnection: () => void
-}) {
-  const https = isHTTPS()
-  // We can't run the ts web connection test when the webpage is loaded
-  // over HTTPS. So in this case, we default to presenting a login button
-  // with some helper text reminding the user to check their connection
-  // themselves.
-  const hasACLAccess = https || tsWebConnected
-
-  const hasEditCaps = useMemo(() => {
-    if (!auth.viewerIdentity) {
-      // If not connected to login client over tailscale, we won't know the viewer's
-      // identity. So we must assume they may be able to edit something and have the
-      // management client handle permissions once the user gets there.
-      return true
-    }
-    return hasAnyEditCapabilities(auth)
-  }, [auth])
-
-  const handleLogin = useCallback(() => {
-    // Must be connected over Tailscale to log in.
-    // Send user to Tailscale IP and start check mode
-    const manageURL = `http://${node.IPv4}:5252/?check=now`
-    if (window.self !== window.top) {
-      // If we're inside an iframe, open management client in new window.
-      window.open(manageURL, "_blank")
-    } else {
-      window.location.href = manageURL
-    }
-  }, [node.IPv4])
-
-  return (
-    <div
-      onMouseEnter={
-        hasEditCaps && !hasACLAccess ? checkTSWebConnection : undefined
-      }
-    >
-      <PopoverContentHeader auth={auth} />
-      {!hasACLAccess || !hasEditCaps ? (
-        <>
-          <p className="text-gray-500 text-xs">
-            {!hasEditCaps ? (
-              // ACLs allow access, but user isn't allowed to edit any features,
-              // restricted to readonly. No point in sending them over to the
-              // tailscaleIP:5252 address.
-              <>
-                You don’t have permission to make changes to this device, but
-                you can view most of its details.
-              </>
-            ) : !node.ACLAllowsAnyIncomingTraffic ? (
-              // Tailnet ACLs don't allow access to anyone.
-              <>
-                The current tailnet policy file does not allow connecting to
-                this device.
-              </>
-            ) : (
-              // ACLs don't allow access to this user specifically.
-              <>
-                Cannot access this device’s Tailscale IP. Make sure you are
-                connected to your tailnet, and that your policy file allows
-                access.
-              </>
-            )}{" "}
-            <a
-              href="https://tailscale.com/s/web-client-access"
-              className="text-blue-700"
-              target="_blank"
-              rel="noreferrer"
-            >
-              Learn more &rarr;
-            </a>
-          </p>
-        </>
-      ) : (
-        // User can connect to Tailcale IP; sign in when ready.
-        <>
-          <p className="text-gray-500 text-xs">
-            You can see most of this device’s details. To make changes, you need
-            to sign in.
-          </p>
-          {https && (
-            // we don't know if the user can connect over TS, so
-            // provide extra tips in case they have trouble.
-            <p className="text-gray-500 text-xs font-semibold pt-2">
-              Make sure you are connected to your tailnet, and that your policy
-              file allows access.
-            </p>
-          )}
-          <SignInButton auth={auth} onClick={handleLogin} />
-        </>
-      )}
-      <PopoverContentFooter auth={auth} />
-    </div>
-  )
-}
-
-/**
- * ManageModeContent is the body of the login popover when the web
- * client is being run in "manage" server mode.
- */
-function ManageModeContent({
   auth,
   newSession,
 }: {
   node: NodeData
   auth: AuthResponse
-  newSession: () => void
+  newSession: () => Promise<void>
 }) {
-  const handleLogin = useCallback(() => {
-    if (window.self !== window.top) {
-      // If we're inside an iframe, start session in new window.
-      let url = new URL(window.location.href)
-      url.searchParams.set("check", "now")
-      window.open(url, "_blank")
-    } else {
-      newSession()
-    }
-  }, [newSession])
+  /**
+   * canConnectOverTS indicates whether the current viewer
+   * is able to hit the node's web client that's being served
+   * at http://${node.IP}:5252. If false, this means that the
+   * viewer must connect to the correct tailnet before being
+   * able to sign in.
+   */
+  const [canConnectOverTS, setCanConnectOverTS] = useState<boolean>(false)
+  const [isRunningCheck, setIsRunningCheck] = useState<boolean>(false)
 
-  const hasAnyPermissions = useMemo(() => hasAnyEditCapabilities(auth), [auth])
+  // Whether the current page is loaded over HTTPS.
+  // If it is, then the connectivity check to the management client
+  // will fail with a mixed-content error.
+  const isHTTPS = window.location.protocol === "https:"
+
+  const checkTSConnection = useCallback(() => {
+    if (auth.viewerIdentity || isHTTPS) {
+      // Skip the connectivity check if we either already know we're connected over Tailscale,
+      // or know the connectivity check will fail because the current page is loaded over HTTPS.
+      setCanConnectOverTS(true)
+      return
+    }
+    // Otherwise, test connection to the ts IP.
+    if (isRunningCheck) {
+      return // already checking
+    }
+    setIsRunningCheck(true)
+    fetch(`http://${node.IPv4}:5252/ok`, { mode: "no-cors" })
+      .then(() => {
+        setCanConnectOverTS(true)
+        setIsRunningCheck(false)
+      })
+      .catch(() => setIsRunningCheck(false))
+  }, [auth.viewerIdentity, isRunningCheck, node.IPv4, isHTTPS])
+
+  /**
+   * Checking connection for first time on page load.
+   *
+   * While not connected, we check again whenever the mouse
+   * enters the popover component, to pick up on the user
+   * leaving to turn on Tailscale then returning to the view.
+   * See `onMouseEnter` on the div below.
+   */
+  // eslint-disable-next-line react-hooks/exhaustive-deps
+  useEffect(() => checkTSConnection(), [])
+
+  const handleSignInClick = useCallback(() => {
+    if (auth.viewerIdentity && auth.serverMode === "manage") {
+      if (window.self !== window.top) {
+        // if we're inside an iframe, start session in new window
+        let url = new URL(window.location.href)
+        url.searchParams.set("check", "now")
+        window.open(url, "_blank")
+      } else {
+        newSession()
+      }
+    } else {
+      // Must be connected over Tailscale to log in.
+      // Send user to Tailscale IP and start check mode
+      const manageURL = `http://${node.IPv4}:5252/?check=now`
+      if (window.self !== window.top) {
+        // if we're inside an iframe, open management client in new window
+        window.open(manageURL, "_blank")
+      } else {
+        window.location.href = manageURL
+      }
+    }
+  }, [auth.viewerIdentity, auth.serverMode, newSession, node.IPv4])
 
   return (
-    <>
-      <PopoverContentHeader auth={auth} />
-      {!auth.authorized &&
-        (hasAnyPermissions ? (
-          // User is connected over Tailscale, but needs to complete check mode.
-          <>
+    <div onMouseEnter={!canConnectOverTS ? checkTSConnection : undefined}>
+      <div className="text-black text-sm font-medium leading-tight mb-1">
+        {!auth.canManageNode ? "Viewing" : "Managing"}
+        {auth.viewerIdentity && ` as ${auth.viewerIdentity.loginName}`}
+      </div>
+      {!auth.canManageNode && (
+        <>
+          {auth.serverMode === "readonly" ? (
             <p className="text-gray-500 text-xs">
-              To make changes, sign in to confirm your identity. This extra step
-              helps us keep your device secure.
+              This web interface is running in read-only mode.{" "}
+              <a
+                href="https://tailscale.com/s/web-client-read-only"
+                className="text-blue-700"
+                target="_blank"
+                rel="noreferrer"
+              >
+                Learn more &rarr;
+              </a>
             </p>
-            <SignInButton auth={auth} onClick={handleLogin} />
-          </>
-        ) : (
-          // User is connected over tailscale, but doesn't have permission to manage.
-          <p className="text-gray-500 text-xs">
-            You don’t have permission to make changes to this device, but you
-            can view most of its details.{" "}
-            <a
-              href="https://tailscale.com/s/web-client-access"
-              className="text-blue-700"
-              target="_blank"
-              rel="noreferrer"
-            >
-              Learn more &rarr;
-            </a>
-          </p>
-        ))}
-      <PopoverContentFooter auth={auth} />
-    </>
+          ) : !auth.viewerIdentity ? (
+            // User is not connected over Tailscale.
+            // These states are only possible on the login client.
+            <>
+              {!canConnectOverTS ? (
+                <>
+                  <p className="text-gray-500 text-xs">
+                    {!node.ACLAllowsAnyIncomingTraffic ? (
+                      // Tailnet ACLs don't allow access.
+                      <>
+                        The current tailnet policy file does not allow
+                        connecting to this device.
+                      </>
+                    ) : (
+                      // ACLs allow access, but user can't connect.
+                      <>
+                        Cannot access this device’s Tailscale IP. Make sure you
+                        are connected to your tailnet, and that your policy file
+                        allows access.
+                      </>
+                    )}{" "}
+                    <a
+                      href="https://tailscale.com/s/web-client-connection"
+                      className="text-blue-700"
+                      target="_blank"
+                      rel="noreferrer"
+                    >
+                      Learn more &rarr;
+                    </a>
+                  </p>
+                </>
+              ) : (
+                // User can connect to Tailcale IP; sign in when ready.
+                <>
+                  <p className="text-gray-500 text-xs">
+                    You can see most of this device’s details. To make changes,
+                    you need to sign in.
+                  </p>
+                  {isHTTPS && (
+                    // we don't know if the user can connect over TS, so
+                    // provide extra tips in case they have trouble.
+                    <p className="text-gray-500 text-xs font-semibold pt-2">
+                      Make sure you are connected to your tailnet, and that your
+                      policy file allows access.
+                    </p>
+                  )}
+                  <SignInButton auth={auth} onClick={handleSignInClick} />
+                </>
+              )}
+            </>
+          ) : auth.authNeeded === AuthType.tailscale ? (
+            // User is connected over Tailscale, but needs to complete check mode.
+            <>
+              <p className="text-gray-500 text-xs">
+                To make changes, sign in to confirm your identity. This extra
+                step helps us keep your device secure.
+              </p>
+              <SignInButton auth={auth} onClick={handleSignInClick} />
+            </>
+          ) : (
+            // User is connected over tailscale, but doesn't have permission to manage.
+            <p className="text-gray-500 text-xs">
+              You don’t have permission to make changes to this device, but you
+              can view most of its details.
+            </p>
+          )}
+        </>
+      )}
+      {auth.viewerIdentity && (
+        <>
+          <hr className="my-2" />
+          <div className="flex items-center">
+            <User className="flex-shrink-0" />
+            <p className="text-gray-500 text-xs ml-2">
+              We recognize you because you are accessing this page from{" "}
+              <span className="font-medium">
+                {auth.viewerIdentity.nodeName || auth.viewerIdentity.nodeIP}
+              </span>
+            </p>
+          </div>
+        </>
+      )}
+    </div>
   )
 }
 

client/web/src/components/views/device-details-view.tsx

@@ -8,7 +8,6 @@ import ACLTag from "src/components/acl-tag"
 import * as Control from "src/components/control-components"
 import NiceIP from "src/components/nice-ip"
 import { UpdateAvailableNotification } from "src/components/update-available"
-import { AuthResponse, canEdit } from "src/hooks/auth"
 import { NodeData } from "src/types"
 import Button from "src/ui/button"
 import Card from "src/ui/card"
@@ -17,11 +16,11 @@ import QuickCopy from "src/ui/quick-copy"
 import { useLocation } from "wouter"
 
 export default function DeviceDetailsView({
+  readonly,
   node,
-  auth,
 }: {
+  readonly: boolean
   node: NodeData
-  auth: AuthResponse
 }) {
   return (
     <>
@@ -38,11 +37,11 @@ export default function DeviceDetailsView({
                 })}
               />
             </div>
-            {canEdit("account", auth) && <DisconnectDialog />}
+            {!readonly && <DisconnectDialog />}
           </div>
         </Card>
         {node.Features["auto-update"] &&
-          canEdit("account", auth) &&
+          !readonly &&
           node.ClientVersion &&
           !node.ClientVersion.RunningLatest && (
             <UpdateAvailableNotification details={node.ClientVersion} />

client/web/src/components/views/disconnected-view.tsx

@@ -2,7 +2,7 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import React from "react"
-import TailscaleIcon from "src/assets/icons/tailscale-icon.svg?react"
+import { ReactComponent as TailscaleIcon } from "src/assets/icons/tailscale-icon.svg"
 
 /**
  * DisconnectedView is rendered after node logout.

client/web/src/components/views/home-view.tsx

@@ -4,22 +4,21 @@
 import cx from "classnames"
 import React, { useMemo } from "react"
 import { apiFetch } from "src/api"
-import ArrowRight from "src/assets/icons/arrow-right.svg?react"
-import Machine from "src/assets/icons/machine.svg?react"
+import { ReactComponent as ArrowRight } from "src/assets/icons/arrow-right.svg"
+import { ReactComponent as Machine } from "src/assets/icons/machine.svg"
 import AddressCard from "src/components/address-copy-card"
 import ExitNodeSelector from "src/components/exit-node-selector"
-import { AuthResponse, canEdit } from "src/hooks/auth"
 import { NodeData } from "src/types"
 import Card from "src/ui/card"
 import { pluralize } from "src/utils/util"
 import { Link, useLocation } from "wouter"
 
 export default function HomeView({
+  readonly,
   node,
-  auth,
 }: {
+  readonly: boolean
   node: NodeData
-  auth: AuthResponse
 }) {
   const [allSubnetRoutes, pendingSubnetRoutes] = useMemo(
     () => [
@@ -64,11 +63,7 @@ export default function HomeView({
         </div>
         {(node.Features["advertise-exit-node"] ||
           node.Features["use-exit-node"]) && (
-          <ExitNodeSelector
-            className="mb-5"
-            node={node}
-            disabled={!canEdit("exitnodes", auth)}
-          />
+          <ExitNodeSelector className="mb-5" node={node} disabled={readonly} />
         )}
         <Link
           className="link font-medium"

client/web/src/components/views/login-view.tsx

@@ -1,11 +1,13 @@
 // Copyright (c) Tailscale Inc & AUTHORS
 // SPDX-License-Identifier: BSD-3-Clause
 
-import React from "react"
+import React, { useState } from "react"
 import { useAPI } from "src/api"
-import TailscaleIcon from "src/assets/icons/tailscale-icon.svg?react"
+import { ReactComponent as TailscaleIcon } from "src/assets/icons/tailscale-icon.svg"
 import { NodeData } from "src/types"
 import Button from "src/ui/button"
+import Collapsible from "src/ui/collapsible"
+import Input from "src/ui/input"
 
 /**
  * LoginView is rendered when the client is not authenticated
@@ -13,6 +15,8 @@ import Button from "src/ui/button"
  */
 export default function LoginView({ data }: { data: NodeData }) {
   const api = useAPI()
+  const [controlURL, setControlURL] = useState<string>("")
+  const [authKey, setAuthKey] = useState<string>("")
 
   return (
     <div className="mb-8 py-6 px-8 bg-white rounded-md shadow-2xl">
@@ -84,6 +88,8 @@ export default function LoginView({ data }: { data: NodeData }) {
                 action: "up",
                 data: {
                   Reauthenticate: true,
+                  ControlURL: controlURL,
+                  AuthKey: authKey,
                 },
               })
             }
@@ -92,6 +98,34 @@ export default function LoginView({ data }: { data: NodeData }) {
           >
             Log In
           </Button>
+          <Collapsible trigger="Advanced options">
+            <h4 className="font-medium mb-1 mt-2">Auth Key</h4>
+            <p className="text-sm text-gray-500">
+              Connect with a pre-authenticated key.{" "}
+              <a
+                href="https://tailscale.com/kb/1085/auth-keys/"
+                className="link"
+                target="_blank"
+                rel="noreferrer"
+              >
+                Learn more &rarr;
+              </a>
+            </p>
+            <Input
+              className="mt-2"
+              value={authKey}
+              onChange={(e) => setAuthKey(e.target.value)}
+              placeholder="tskey-auth-XXX"
+            />
+            <h4 className="font-medium mt-3 mb-1">Server URL</h4>
+            <p className="text-sm text-gray-500">Base URL of control server.</p>
+            <Input
+              className="mt-2"
+              value={controlURL}
+              onChange={(e) => setControlURL(e.target.value)}
+              placeholder="https://login.tailscale.com/"
+            />
+          </Collapsible>
         </>
       )}
     </div>

client/web/src/components/views/subnet-router-view.tsx

@@ -4,9 +4,9 @@
 import cx from "classnames"
 import React, { useCallback, useMemo, useState } from "react"
 import { useAPI } from "src/api"
-import CheckCircle from "src/assets/icons/check-circle.svg?react"
-import Clock from "src/assets/icons/clock.svg?react"
-import Plus from "src/assets/icons/plus.svg?react"
+import { ReactComponent as CheckCircle } from "src/assets/icons/check-circle.svg"
+import { ReactComponent as Clock } from "src/assets/icons/clock.svg"
+import { ReactComponent as Plus } from "src/assets/icons/plus.svg"
 import * as Control from "src/components/control-components"
 import { NodeData } from "src/types"
 import Button from "src/ui/button"

client/web/src/components/views/updating-view.tsx

@@ -2,8 +2,8 @@
 // SPDX-License-Identifier: BSD-3-Clause
 
 import React from "react"
-import CheckCircleIcon from "src/assets/icons/check-circle.svg?react"
-import XCircleIcon from "src/assets/icons/x-circle.svg?react"
+import { ReactComponent as CheckCircleIcon } from "src/assets/icons/check-circle.svg"
+import { ReactComponent as XCircleIcon } from "src/assets/icons/x-circle.svg"
 import { ChangelogText } from "src/components/update-available"
 import { UpdateState, useInstallUpdate } from "src/hooks/self-update"
 import { VersionInfo } from "src/types"

client/web/src/hooks/auth.ts

@@ -4,50 +4,25 @@
 import { useCallback, useEffect, useState } from "react"
 import { apiFetch, setSynoToken } from "src/api"
 
+export enum AuthType {
+  synology = "synology",
+  tailscale = "tailscale",
+}
+
 export type AuthResponse = {
-  serverMode: AuthServerMode
-  authorized: boolean
+  authNeeded?: AuthType
+  canManageNode: boolean
+  serverMode: "login" | "readonly" | "manage"
   viewerIdentity?: {
     loginName: string
     nodeName: string
     nodeIP: string
     profilePicUrl?: string
-    capabilities: { [key in PeerCapability]: boolean }
   }
-  needsSynoAuth?: boolean
 }
 
-export type AuthServerMode = "login" | "readonly" | "manage"
-
-export type PeerCapability = "*" | "ssh" | "subnets" | "exitnodes" | "account"
-
-/**
- * canEdit reports whether the given auth response specifies that the viewer
- * has the ability to edit the given capability.
- */
-export function canEdit(cap: PeerCapability, auth: AuthResponse): boolean {
-  if (!auth.authorized || !auth.viewerIdentity) {
-    return false
-  }
-  if (auth.viewerIdentity.capabilities["*"] === true) {
-    return true // can edit all features
-  }
-  return auth.viewerIdentity.capabilities[cap] === true
-}
-
-/**
- * hasAnyEditCapabilities reports whether the given auth response specifies
- * that the viewer has at least one edit capability. If this is true, the
- * user is able to go through the auth flow to authenticate a management
- * session.
- */
-export function hasAnyEditCapabilities(auth: AuthResponse): boolean {
-  return Object.values(auth.viewerIdentity?.capabilities || {}).includes(true)
-}
-
-/**
- * useAuth reports and refreshes Tailscale auth status for the web client.
- */
+// useAuth reports and refreshes Tailscale auth status
+// for the web client.
 export default function useAuth() {
   const [data, setData] = useState<AuthResponse>()
   const [loading, setLoading] = useState<boolean>(true)
@@ -58,16 +33,18 @@ export default function useAuth() {
     return apiFetch<AuthResponse>("/auth", "GET")
       .then((d) => {
         setData(d)
-        if (d.needsSynoAuth) {
-          fetch("/webman/login.cgi")
-            .then((r) => r.json())
-            .then((a) => {
-              setSynoToken(a.SynoToken)
-              setRanSynoAuth(true)
-              setLoading(false)
-            })
-        } else {
-          setLoading(false)
+        switch (d.authNeeded) {
+          case AuthType.synology:
+            fetch("/webman/login.cgi")
+              .then((r) => r.json())
+              .then((a) => {
+                setSynoToken(a.SynoToken)
+                setRanSynoAuth(true)
+                setLoading(false)
+              })
+            break
+          default:
+            setLoading(false)
         }
         return d
       })
@@ -95,13 +72,8 @@ export default function useAuth() {
 
   useEffect(() => {
     loadAuth().then((d) => {
-      if (!d) {
-        return
-      }
       if (
-        !d.authorized &&
-        hasAnyEditCapabilities(d) &&
-        // Start auth flow immediately if browser has requested it.
+        !d?.canManageNode &&
         new URLSearchParams(window.location.search).get("check") === "now"
       ) {
         newSession()

client/web/src/hooks/ts-web-connected.ts

@@ -1,46 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-import { useCallback, useEffect, useState } from "react"
-import { isHTTPS } from "src/utils/util"
-import { AuthServerMode } from "./auth"
-
-/**
- * useTSWebConnected hook is used to check whether the browser is able to
- * connect to the web client served at http://${nodeIPv4}:5252
- */
-export function useTSWebConnected(mode: AuthServerMode, nodeIPv4: string) {
-  const [tsWebConnected, setTSWebConnected] = useState<boolean>(
-    mode === "manage" // browser already on the web client
-  )
-  const [isLoading, setIsLoading] = useState<boolean>(false)
-
-  const checkTSWebConnection = useCallback(() => {
-    if (mode === "manage") {
-      // Already connected to the web client.
-      setTSWebConnected(true)
-      return
-    }
-    if (isHTTPS()) {
-      // When page is loaded over HTTPS, the connectivity check will always
-      // fail with a mixed-content error. In this case don't bother doing
-      // the check.
-      return
-    }
-    if (isLoading) {
-      return // already checking
-    }
-    setIsLoading(true)
-    fetch(`http://${nodeIPv4}:5252/ok`, { mode: "no-cors" })
-      .then(() => {
-        setTSWebConnected(true)
-        setIsLoading(false)
-      })
-      .catch(() => setIsLoading(false))
-  }, [isLoading, mode, nodeIPv4])
-
-  // eslint-disable-next-line react-hooks/exhaustive-deps
-  useEffect(() => checkTSWebConnection(), []) // checking connection for first time on page load
-
-  return { tsWebConnected, checkTSWebConnection, isLoading }
-}

client/web/src/ui/collapsible.tsx

@@ -3,7 +3,7 @@
 
 import * as Primitive from "@radix-ui/react-collapsible"
 import React, { useState } from "react"
-import ChevronDown from "src/assets/icons/chevron-down.svg?react"
+import { ReactComponent as ChevronDown } from "src/assets/icons/chevron-down.svg"
 
 type CollapsibleProps = {
   trigger?: string

client/web/src/ui/dialog.tsx

@@ -4,7 +4,7 @@
 import * as DialogPrimitive from "@radix-ui/react-dialog"
 import cx from "classnames"
 import React, { Component, ComponentProps, FormEvent } from "react"
-import X from "src/assets/icons/x.svg?react"
+import { ReactComponent as X } from "src/assets/icons/x.svg"
 import Button from "src/ui/button"
 import PortalContainerContext from "src/ui/portal-container-context"
 import { isObject } from "src/utils/util"

client/web/src/ui/search-input.tsx

@@ -3,7 +3,7 @@
 
 import cx from "classnames"
 import React, { forwardRef, InputHTMLAttributes } from "react"
-import Search from "src/assets/icons/search.svg?react"
+import { ReactComponent as Search } from "src/assets/icons/search.svg"
 
 type Props = {
   className?: string

client/web/src/ui/toaster.tsx

@@ -10,7 +10,7 @@ import React, {
   useState,
 } from "react"
 import { createPortal } from "react-dom"
-import X from "src/assets/icons/x.svg?react"
+import { ReactComponent as X } from "src/assets/icons/x.svg"
 import { noop } from "src/utils/util"
 import { create } from "zustand"
 import { shallow } from "zustand/shallow"

client/web/src/utils/util.ts

@@ -49,10 +49,3 @@ export function isPromise<T = unknown>(val: unknown): val is Promise<T> {
   }
   return typeof val === "object" && "then" in val
 }
-
-/**
- * isHTTPS reports whether the current page is loaded over HTTPS.
- */
-export function isHTTPS() {
-  return window.location.protocol === "https:"
-}

client/web/tailwind.config.js

@@ -1,7 +1,7 @@
-import plugin from "tailwindcss/plugin"
-import styles from "./styles.json"
+const plugin = require("tailwindcss/plugin")
+const styles = require("./styles.json")
 
-const config = {
+module.exports = {
   theme: {
     screens: {
       sm: "420px",
@@ -96,22 +96,20 @@ const config = {
   plugins: [
     plugin(function ({ addVariant }) {
       addVariant("state-open", [
-        "&[data-state=“open”]",
-        "[data-state=“open”] &",
+        '&[data-state="open"]',
+        '[data-state="open"] &',
       ])
       addVariant("state-closed", [
-        "&[data-state=“closed”]",
-        "[data-state=“closed”] &",
+        '&[data-state="closed"]',
+        '[data-state="closed"] &',
       ])
       addVariant("state-delayed-open", [
-        "&[data-state=“delayed-open”]",
-        "[data-state=“delayed-open”] &",
+        '&[data-state="delayed-open"]',
+        '[data-state="delayed-open"] &',
       ])
-      addVariant("state-active", ["&[data-state=“active”]"])
-      addVariant("state-inactive", ["&[data-state=“inactive”]"])
+      addVariant("state-active", ['&[data-state="active"]'])
+      addVariant("state-inactive", ['&[data-state="inactive"]'])
     }),
   ],
   content: ["./src/**/*.html", "./src/**/*.{ts,tsx}", "./index.html"],
 }
-
-export default config

client/web/tsconfig.json

@@ -5,7 +5,6 @@
     "module": "ES2020",
     "strict": true,
     "sourceMap": true,
-    "skipLibCheck": true,
     "isolatedModules": true,
     "moduleResolution": "node",
     "forceConsistentCasingInFileNames": true,

client/web/vite.config.ts

@@ -1,5 +1,6 @@
 /// <reference types="vitest" />
 import { createLogger, defineConfig } from "vite"
+import rewrite from "vite-plugin-rewrite-all"
 import svgr from "vite-plugin-svgr"
 import paths from "vite-tsconfig-paths"
 
@@ -23,6 +24,11 @@ export default defineConfig({
   plugins: [
     paths(),
     svgr(),
+    // By default, the Vite dev server doesn't handle dots
+    // in path names and treats them as static files.
+    // This plugin changes Vite's routing logic to fix this.
+    // See: https://github.com/vitejs/vite/issues/2415
+    rewrite(),
   ],
   build: {
     outDir: "build",

client/web/web.go

@@ -17,16 +17,16 @@ import (
 	"os"
 	"path"
 	"path/filepath"
+	"slices"
 	"strings"
 	"sync"
 	"time"
 
 	"github.com/gorilla/csrf"
-	"tailscale.com/client/local"
+	"tailscale.com/client/tailscale"
 	"tailscale.com/client/tailscale/apitype"
 	"tailscale.com/clientupdate"
 	"tailscale.com/envknob"
-	"tailscale.com/envknob/featureknob"
 	"tailscale.com/hostinfo"
 	"tailscale.com/ipn"
 	"tailscale.com/ipn/ipnstate"
@@ -35,7 +35,6 @@ import (
 	"tailscale.com/net/tsaddr"
 	"tailscale.com/tailcfg"
 	"tailscale.com/types/logger"
-	"tailscale.com/types/views"
 	"tailscale.com/util/httpm"
 	"tailscale.com/version"
 	"tailscale.com/version/distro"
@@ -50,7 +49,7 @@ type Server struct {
 	mode ServerMode
 
 	logf    logger.Logf
-	lc      *local.Client
+	lc      *tailscale.LocalClient
 	timeNow func() time.Time
 
 	// devMode indicates that the server run with frontend assets
@@ -89,8 +88,8 @@ type Server struct {
 type ServerMode string
 
 const (
-	// LoginServerMode serves a read-only login client for logging a
-	// node into a tailnet, and viewing a read-only interface of the
+	// LoginServerMode serves a readonly login client for logging a
+	// node into a tailnet, and viewing a readonly interface of the
 	// node's current Tailscale settings.
 	//
 	// In this mode, API calls are authenticated via platform auth.
@@ -110,10 +109,15 @@ const (
 	// This mode restricts the app to only being assessible over Tailscale,
 	// and API calls are authenticated via browser sessions associated with
 	// the source's Tailscale identity. If the source browser does not have
-	// a valid session, a read-only version of the app is displayed.
+	// a valid session, a readonly version of the app is displayed.
 	ManageServerMode ServerMode = "manage"
 )
 
+var (
+	exitNodeRouteV4 = netip.MustParsePrefix("0.0.0.0/0")
+	exitNodeRouteV6 = netip.MustParsePrefix("::/0")
+)
+
 // ServerOpts contains options for constructing a new Server.
 type ServerOpts struct {
 	// Mode specifies the mode of web client being constructed.
@@ -125,9 +129,9 @@ type ServerOpts struct {
 	// PathPrefix is the URL prefix added to requests by CGI or reverse proxy.
 	PathPrefix string
 
-	// LocalClient is the local.Client to use for this web server.
+	// LocalClient is the tailscale.LocalClient to use for this web server.
 	// If nil, a new one will be created.
-	LocalClient *local.Client
+	LocalClient *tailscale.LocalClient
 
 	// TimeNow optionally provides a time function.
 	// time.Now is used as default.
@@ -166,7 +170,7 @@ func NewServer(opts ServerOpts) (s *Server, err error) {
 		return nil, fmt.Errorf("invalid Mode provided")
 	}
 	if opts.LocalClient == nil {
-		opts.LocalClient = &local.Client{}
+		opts.LocalClient = &tailscale.LocalClient{}
 	}
 	s = &Server{
 		mode:        opts.Mode,
@@ -203,9 +207,25 @@ func NewServer(opts ServerOpts) (s *Server, err error) {
 	}
 	s.assetsHandler, s.assetsCleanup = assetsHandler(s.devMode)
 
-	var metric string
-	s.apiHandler, metric = s.modeAPIHandler(s.mode)
-	s.apiHandler = s.withCSRF(s.apiHandler)
+	var metric string // clientmetric to report on startup
+
+	// Create handler for "/api" requests with CSRF protection.
+	// We don't require secure cookies, since the web client is regularly used
+	// on network appliances that are served on local non-https URLs.
+	// The client is secured by limiting the interface it listens on,
+	// or by authenticating requests before they reach the web client.
+	csrfProtect := csrf.Protect(s.csrfKey(), csrf.Secure(false))
+	switch s.mode {
+	case LoginServerMode:
+		s.apiHandler = csrfProtect(http.HandlerFunc(s.serveLoginAPI))
+		metric = "web_login_client_initialization"
+	case ReadOnlyServerMode:
+		s.apiHandler = csrfProtect(http.HandlerFunc(s.serveLoginAPI))
+		metric = "web_readonly_client_initialization"
+	case ManageServerMode:
+		s.apiHandler = csrfProtect(http.HandlerFunc(s.serveAPI))
+		metric = "web_client_initialization"
+	}
 
 	// Don't block startup on reporting metric.
 	// Report in separate go routine with 5 second timeout.
@@ -218,39 +238,6 @@ func NewServer(opts ServerOpts) (s *Server, err error) {
 	return s, nil
 }
 
-func (s *Server) withCSRF(h http.Handler) http.Handler {
-	csrfProtect := csrf.Protect(s.csrfKey(), csrf.Secure(false))
-
-	// ref https://github.com/tailscale/tailscale/pull/14822
-	// signal to the CSRF middleware that the request is being served over
-	// plaintext HTTP to skip TLS-only header checks.
-	withSetPlaintext := func(h http.Handler) http.Handler {
-		return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
-			r = csrf.PlaintextHTTPRequest(r)
-			h.ServeHTTP(w, r)
-		})
-	}
-
-	// NB: the order of the withSetPlaintext and csrfProtect calls is important
-	// to ensure that we signal to the CSRF middleware that the request is being
-	// served over plaintext HTTP and not over TLS as it presumes by default.
-	return withSetPlaintext(csrfProtect(h))
-}
-
-func (s *Server) modeAPIHandler(mode ServerMode) (http.Handler, string) {
-	switch mode {
-	case LoginServerMode:
-		return http.HandlerFunc(s.serveLoginAPI), "web_login_client_initialization"
-	case ReadOnlyServerMode:
-		return http.HandlerFunc(s.serveLoginAPI), "web_readonly_client_initialization"
-	case ManageServerMode:
-		return http.HandlerFunc(s.serveAPI), "web_client_initialization"
-	default: // invalid mode
-		log.Fatalf("invalid mode: %v", mode)
-	}
-	return nil, ""
-}
-
 func (s *Server) Shutdown() {
 	s.logf("web.Server: shutting down")
 	if s.assetsCleanup != nil {
@@ -296,12 +283,6 @@ func (s *Server) serve(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
-	if r.URL.Path == "/metrics" {
-		r.URL.Path = "/api/local/v0/usermetrics"
-		s.proxyRequestToLocalAPI(w, r)
-		return
-	}
-
 	if strings.HasPrefix(r.URL.Path, "/api/") {
 		switch {
 		case r.URL.Path == "/api/auth" && r.Method == httpm.GET:
@@ -335,8 +316,7 @@ func (s *Server) requireTailscaleIP(w http.ResponseWriter, r *http.Request) (han
 		ipv6ServiceHost = "[" + tsaddr.TailscaleServiceIPv6String + "]"
 	)
 	// allow requests on quad-100 (or ipv6 equivalent)
-	host := strings.TrimSuffix(r.Host, ":80")
-	if host == ipv4ServiceHost || host == ipv6ServiceHost {
+	if r.Host == ipv4ServiceHost || r.Host == ipv6ServiceHost {
 		return false
 	}
 
@@ -465,188 +445,18 @@ func (s *Server) serveLoginAPI(w http.ResponseWriter, r *http.Request) {
 	}
 }
 
-type apiHandler[data any] struct {
-	s *Server
-	w http.ResponseWriter
-	r *http.Request
+type authType string
 
-	// permissionCheck allows for defining whether a requesting peer's
-	// capabilities grant them access to make the given data update.
-	// If permissionCheck reports false, the request fails as unauthorized.
-	permissionCheck func(data data, peer peerCapabilities) bool
-}
-
-// newHandler constructs a new api handler which restricts the given request
-// to the specified permission check. If the permission check fails for
-// the peer associated with the request, an unauthorized error is returned
-// to the client.
-func newHandler[data any](s *Server, w http.ResponseWriter, r *http.Request, permissionCheck func(data data, peer peerCapabilities) bool) *apiHandler[data] {
-	return &apiHandler[data]{
-		s:               s,
-		w:               w,
-		r:               r,
-		permissionCheck: permissionCheck,
-	}
-}
-
-// alwaysAllowed can be passed as the permissionCheck argument to newHandler
-// for requests that are always allowed to complete regardless of a peer's
-// capabilities.
-func alwaysAllowed[data any](_ data, _ peerCapabilities) bool { return true }
-
-func (a *apiHandler[data]) getPeer() (peerCapabilities, error) {
-	// TODO(tailscale/corp#16695,sonia): We also call StatusWithoutPeers and
-	// WhoIs when originally checking for a session from authorizeRequest.
-	// Would be nice if we could pipe those through to here so we don't end
-	// up having to re-call them to grab the peer capabilities.
-	status, err := a.s.lc.StatusWithoutPeers(a.r.Context())
-	if err != nil {
-		return nil, err
-	}
-	whois, err := a.s.lc.WhoIs(a.r.Context(), a.r.RemoteAddr)
-	if err != nil {
-		return nil, err
-	}
-	peer, err := toPeerCapabilities(status, whois)
-	if err != nil {
-		return nil, err
-	}
-	return peer, nil
-}
-
-type noBodyData any // empty type, for use from serveAPI for endpoints with empty body
-
-// handle runs the given handler if the source peer satisfies the
-// constraints for running this request.
-//
-// handle is expected for use when `data` type is empty, or set to
-// `noBodyData` in practice. For requests that expect JSON body data
-// to be attached, use handleJSON instead.
-func (a *apiHandler[data]) handle(h http.HandlerFunc) {
-	peer, err := a.getPeer()
-	if err != nil {
-		http.Error(a.w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-	var body data // not used
-	if !a.permissionCheck(body, peer) {
-		http.Error(a.w, "not allowed", http.StatusUnauthorized)
-		return
-	}
-	h(a.w, a.r)
-}
-
-// handleJSON manages decoding the request's body JSON and passing
-// it on to the provided function if the source peer satisfies the
-// constraints for running this request.
-func (a *apiHandler[data]) handleJSON(h func(ctx context.Context, data data) error) {
-	defer a.r.Body.Close()
-	var body data
-	if err := json.NewDecoder(a.r.Body).Decode(&body); err != nil {
-		http.Error(a.w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-	peer, err := a.getPeer()
-	if err != nil {
-		http.Error(a.w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-	if !a.permissionCheck(body, peer) {
-		http.Error(a.w, "not allowed", http.StatusUnauthorized)
-		return
-	}
-
-	if err := h(a.r.Context(), body); err != nil {
-		http.Error(a.w, err.Error(), http.StatusInternalServerError)
-		return
-	}
-	a.w.WriteHeader(http.StatusOK)
-}
-
-// serveAPI serves requests for the web client api.
-// It should only be called by Server.ServeHTTP, via Server.apiHandler,
-// which protects the handler using gorilla csrf.
-func (s *Server) serveAPI(w http.ResponseWriter, r *http.Request) {
-	if r.Method == httpm.PATCH {
-		// Enforce that PATCH requests are always application/json.
-		if ct := r.Header.Get("Content-Type"); ct != "application/json" {
-			http.Error(w, "invalid request", http.StatusBadRequest)
-			return
-		}
-	}
-
-	w.Header().Set("X-CSRF-Token", csrf.Token(r))
-	path := strings.TrimPrefix(r.URL.Path, "/api")
-	switch {
-	case path == "/data" && r.Method == httpm.GET:
-		newHandler[noBodyData](s, w, r, alwaysAllowed).
-			handle(s.serveGetNodeData)
-		return
-	case path == "/exit-nodes" && r.Method == httpm.GET:
-		newHandler[noBodyData](s, w, r, alwaysAllowed).
-			handle(s.serveGetExitNodes)
-		return
-	case path == "/routes" && r.Method == httpm.POST:
-		peerAllowed := func(d postRoutesRequest, p peerCapabilities) bool {
-			if d.SetExitNode && !p.canEdit(capFeatureExitNodes) {
-				return false
-			} else if d.SetRoutes && !p.canEdit(capFeatureSubnets) {
-				return false
-			}
-			return true
-		}
-		newHandler[postRoutesRequest](s, w, r, peerAllowed).
-			handleJSON(s.servePostRoutes)
-		return
-	case path == "/device-details-click" && r.Method == httpm.POST:
-		newHandler[noBodyData](s, w, r, alwaysAllowed).
-			handle(s.serveDeviceDetailsClick)
-		return
-	case path == "/local/v0/logout" && r.Method == httpm.POST:
-		peerAllowed := func(_ noBodyData, peer peerCapabilities) bool {
-			return peer.canEdit(capFeatureAccount)
-		}
-		newHandler[noBodyData](s, w, r, peerAllowed).
-			handle(s.proxyRequestToLocalAPI)
-		return
-	case path == "/local/v0/prefs" && r.Method == httpm.PATCH:
-		peerAllowed := func(data maskedPrefs, peer peerCapabilities) bool {
-			if data.RunSSHSet && !peer.canEdit(capFeatureSSH) {
-				return false
-			}
-			return true
-		}
-		newHandler[maskedPrefs](s, w, r, peerAllowed).
-			handleJSON(s.serveUpdatePrefs)
-		return
-	case path == "/local/v0/update/check" && r.Method == httpm.GET:
-		newHandler[noBodyData](s, w, r, alwaysAllowed).
-			handle(s.proxyRequestToLocalAPI)
-		return
-	case path == "/local/v0/update/check" && r.Method == httpm.POST:
-		peerAllowed := func(_ noBodyData, peer peerCapabilities) bool {
-			return peer.canEdit(capFeatureAccount)
-		}
-		newHandler[noBodyData](s, w, r, peerAllowed).
-			handle(s.proxyRequestToLocalAPI)
-		return
-	case path == "/local/v0/update/progress" && r.Method == httpm.POST:
-		newHandler[noBodyData](s, w, r, alwaysAllowed).
-			handle(s.proxyRequestToLocalAPI)
-		return
-	case path == "/local/v0/upload-client-metrics" && r.Method == httpm.POST:
-		newHandler[noBodyData](s, w, r, alwaysAllowed).
-			handle(s.proxyRequestToLocalAPI)
-		return
-	}
-	http.Error(w, "invalid endpoint", http.StatusNotFound)
-}
+var (
+	synoAuth      authType = "synology"  // user needs a SynoToken for subsequent API calls
+	tailscaleAuth authType = "tailscale" // user needs to complete Tailscale check mode
+)
 
 type authResponse struct {
-	ServerMode     ServerMode      `json:"serverMode"`
-	Authorized     bool            `json:"authorized"` // has an authorized management session
+	AuthNeeded     authType        `json:"authNeeded,omitempty"` // filled when user needs to complete a specific type of auth
+	CanManageNode  bool            `json:"canManageNode"`
 	ViewerIdentity *viewerIdentity `json:"viewerIdentity,omitempty"`
-	NeedsSynoAuth  bool            `json:"needsSynoAuth,omitempty"`
+	ServerMode     ServerMode      `json:"serverMode"`
 }
 
 // viewerIdentity is the Tailscale identity of the source node
@@ -665,11 +475,9 @@ func (s *Server) serveAPIAuth(w http.ResponseWriter, r *http.Request) {
 	var resp authResponse
 	resp.ServerMode = s.mode
 	session, whois, status, sErr := s.getSession(r)
-	var caps peerCapabilities
 
 	if whois != nil {
-		var err error
-		caps, err = toPeerCapabilities(status, whois)
+		caps, err := toPeerCapabilities(status, whois)
 		if err != nil {
 			http.Error(w, sErr.Error(), http.StatusInternalServerError)
 			return
@@ -696,7 +504,7 @@ func (s *Server) serveAPIAuth(w http.ResponseWriter, r *http.Request) {
 				return
 			}
 			if !authorized {
-				resp.NeedsSynoAuth = true
+				resp.AuthNeeded = synoAuth
 				writeJSON(w, resp)
 				return
 			}
@@ -712,17 +520,21 @@ func (s *Server) serveAPIAuth(w http.ResponseWriter, r *http.Request) {
 
 	switch {
 	case sErr != nil && errors.Is(sErr, errNotUsingTailscale):
+		// Restricted to the readonly view, no auth action to take.
 		s.lc.IncrementCounter(r.Context(), "web_client_viewing_local", 1)
-		resp.Authorized = false // restricted to the read-only view
+		resp.AuthNeeded = ""
 	case sErr != nil && errors.Is(sErr, errNotOwner):
+		// Restricted to the readonly view, no auth action to take.
 		s.lc.IncrementCounter(r.Context(), "web_client_viewing_not_owner", 1)
-		resp.Authorized = false // restricted to the read-only view
+		resp.AuthNeeded = ""
 	case sErr != nil && errors.Is(sErr, errTaggedLocalSource):
+		// Restricted to the readonly view, no auth action to take.
 		s.lc.IncrementCounter(r.Context(), "web_client_viewing_local_tag", 1)
-		resp.Authorized = false // restricted to the read-only view
+		resp.AuthNeeded = ""
 	case sErr != nil && errors.Is(sErr, errTaggedRemoteSource):
+		// Restricted to the readonly view, no auth action to take.
 		s.lc.IncrementCounter(r.Context(), "web_client_viewing_remote_tag", 1)
-		resp.Authorized = false // restricted to the read-only view
+		resp.AuthNeeded = ""
 	case sErr != nil && !errors.Is(sErr, errNoSession):
 		// Any other error.
 		http.Error(w, sErr.Error(), http.StatusInternalServerError)
@@ -733,26 +545,16 @@ func (s *Server) serveAPIAuth(w http.ResponseWriter, r *http.Request) {
 		} else {
 			s.lc.IncrementCounter(r.Context(), "web_client_managing_remote", 1)
 		}
-		// User has a valid session. They're now authorized to edit if they
-		// have any edit capabilities. In practice, they won't be sent through
-		// the auth flow if they don't have edit caps, but their ACL granted
-		// permissions may change at any time. The frontend views and backend
-		// endpoints are always restricted to their current capabilities in
-		// addition to a valid session.
-		//
-		// But, we also check the caps here for a better user experience on
-		// the frontend login toggle, which uses resp.Authorized to display
-		// "viewing" vs "managing" copy. If they don't have caps, we want to
-		// display "viewing" even if they have a valid session.
-		resp.Authorized = !caps.isEmpty()
+		resp.CanManageNode = true
+		resp.AuthNeeded = ""
 	default:
+		// whois being nil implies local as the request did not come over Tailscale
 		if whois == nil || (whois.Node.StableID == status.Self.ID) {
-			// whois being nil implies local as the request did not come over Tailscale.
 			s.lc.IncrementCounter(r.Context(), "web_client_viewing_local", 1)
 		} else {
 			s.lc.IncrementCounter(r.Context(), "web_client_viewing_remote", 1)
 		}
-		resp.Authorized = false // not yet authorized
+		resp.AuthNeeded = tailscaleAuth
 	}
 
 	writeJSON(w, resp)
@@ -816,14 +618,40 @@ func (s *Server) serveAPIAuthSessionWait(w http.ResponseWriter, r *http.Request)
 	}
 }
 
+// serveAPI serves requests for the web client api.
+// It should only be called by Server.ServeHTTP, via Server.apiHandler,
+// which protects the handler using gorilla csrf.
+func (s *Server) serveAPI(w http.ResponseWriter, r *http.Request) {
+	w.Header().Set("X-CSRF-Token", csrf.Token(r))
+	path := strings.TrimPrefix(r.URL.Path, "/api")
+	switch {
+	case path == "/data" && r.Method == httpm.GET:
+		s.serveGetNodeData(w, r)
+		return
+	case path == "/exit-nodes" && r.Method == httpm.GET:
+		s.serveGetExitNodes(w, r)
+		return
+	case path == "/routes" && r.Method == httpm.POST:
+		s.servePostRoutes(w, r)
+		return
+	case path == "/device-details-click" && r.Method == httpm.POST:
+		s.serveDeviceDetailsClick(w, r)
+		return
+	case strings.HasPrefix(path, "/local/"):
+		s.proxyRequestToLocalAPI(w, r)
+		return
+	}
+	http.Error(w, "invalid endpoint", http.StatusNotFound)
+}
+
 type nodeData struct {
 	ID          tailcfg.StableNodeID
 	Status      string
 	DeviceName  string
 	TailnetName string // TLS cert name
 	DomainName  string
-	IPv4        netip.Addr
-	IPv6        netip.Addr
+	IPv4        string
+	IPv6        string
 	OS          string
 	IPNVersion  string
 
@@ -882,14 +710,10 @@ func (s *Server) serveGetNodeData(w http.ResponseWriter, r *http.Request) {
 		return
 	}
 	filterRules, _ := s.lc.DebugPacketFilterRules(r.Context())
-	ipv4, ipv6 := s.selfNodeAddresses(r, st)
-
 	data := &nodeData{
 		ID:               st.Self.ID,
 		Status:           st.BackendState,
 		DeviceName:       strings.Split(st.Self.DNSName, ".")[0],
-		IPv4:             ipv4,
-		IPv6:             ipv6,
 		OS:               st.Self.OS,
 		IPNVersion:       strings.Split(st.Version, "-")[0],
 		Profile:          st.User[st.Self.UserID],
@@ -909,6 +733,10 @@ func (s *Server) serveGetNodeData(w http.ResponseWriter, r *http.Request) {
 		ACLAllowsAnyIncomingTraffic: s.aclsAllowAccess(filterRules),
 	}
 
+	ipv4, ipv6 := s.selfNodeAddresses(r, st)
+	data.IPv4 = ipv4.String()
+	data.IPv6 = ipv6.String()
+
 	if hostinfo.GetEnvType() == hostinfo.HomeAssistantAddOn && data.URLPrefix == "" {
 		// X-Ingress-Path is the path prefix in use for Home Assistant
 		// https://developers.home-assistant.io/docs/add-ons/presentation#ingress
@@ -941,10 +769,10 @@ func (s *Server) serveGetNodeData(w http.ResponseWriter, r *http.Request) {
 			return p == route
 		})
 	}
-	data.AdvertisingExitNodeApproved = routeApproved(tsaddr.AllIPv4()) || routeApproved(tsaddr.AllIPv6())
+	data.AdvertisingExitNodeApproved = routeApproved(exitNodeRouteV4) || routeApproved(exitNodeRouteV6)
 
 	for _, r := range prefs.AdvertiseRoutes {
-		if tsaddr.IsExitRoute(r) {
+		if r == exitNodeRouteV4 || r == exitNodeRouteV6 {
 			data.AdvertisingExitNode = true
 		} else {
 			data.AdvertisedRoutes = append(data.AdvertisedRoutes, subnetRoute{
@@ -979,16 +807,37 @@ func (s *Server) serveGetNodeData(w http.ResponseWriter, r *http.Request) {
 }
 
 func availableFeatures() map[string]bool {
+	env := hostinfo.GetEnvType()
 	features := map[string]bool{
 		"advertise-exit-node": true, // available on all platforms
 		"advertise-routes":    true, // available on all platforms
-		"use-exit-node":       featureknob.CanUseExitNode() == nil,
-		"ssh":                 featureknob.CanRunTailscaleSSH() == nil,
+		"use-exit-node":       canUseExitNode(env) == nil,
+		"ssh":                 envknob.CanRunTailscaleSSH() == nil,
 		"auto-update":         version.IsUnstableBuild() && clientupdate.CanAutoUpdate(),
 	}
+	if env == hostinfo.HomeAssistantAddOn {
+		// Setting SSH on Home Assistant causes trouble on startup
+		// (since the flag is not being passed to `tailscale up`).
+		// Although Tailscale SSH does work here,
+		// it's not terribly useful since it's running in a separate container.
+		features["ssh"] = false
+	}
 	return features
 }
 
+func canUseExitNode(env hostinfo.EnvType) error {
+	switch dist := distro.Get(); dist {
+	case distro.Synology, // see https://github.com/tailscale/tailscale/issues/1995
+		distro.QNAP,
+		distro.Unraid:
+		return fmt.Errorf("Tailscale exit nodes cannot be used on %s.", dist)
+	}
+	if env == hostinfo.HomeAssistantAddOn {
+		return errors.New("Tailscale exit nodes cannot be used on Home Assistant.")
+	}
+	return nil
+}
+
 // aclsAllowAccess returns whether tailnet ACLs (as expressed in the provided filter rules)
 // permit any devices to access the local web client.
 // This does not currently check whether a specific device can connect, just any device.
@@ -1031,23 +880,6 @@ func (s *Server) serveGetExitNodes(w http.ResponseWriter, r *http.Request) {
 	writeJSON(w, exitNodes)
 }
 
-// maskedPrefs is the subset of ipn.MaskedPrefs that are
-// allowed to be editable via the web UI.
-type maskedPrefs struct {
-	RunSSHSet bool
-	RunSSH    bool
-}
-
-func (s *Server) serveUpdatePrefs(ctx context.Context, prefs maskedPrefs) error {
-	_, err := s.lc.EditPrefs(ctx, &ipn.MaskedPrefs{
-		RunSSHSet: prefs.RunSSHSet,
-		Prefs: ipn.Prefs{
-			RunSSH: prefs.RunSSH,
-		},
-	})
-	return err
-}
-
 type postRoutesRequest struct {
 	SetExitNode       bool // when set, UseExitNode and AdvertiseExitNode values are applied
 	SetRoutes         bool // when set, AdvertiseRoutes value is applied
@@ -1056,15 +888,23 @@ type postRoutesRequest struct {
 	AdvertiseRoutes   []string
 }
 
-func (s *Server) servePostRoutes(ctx context.Context, data postRoutesRequest) error {
-	prefs, err := s.lc.GetPrefs(ctx)
+func (s *Server) servePostRoutes(w http.ResponseWriter, r *http.Request) {
+	defer r.Body.Close()
+
+	var data postRoutesRequest
+	if err := json.NewDecoder(r.Body).Decode(&data); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+	prefs, err := s.lc.GetPrefs(r.Context())
 	if err != nil {
-		return err
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
 	}
 	var currNonExitRoutes []string
 	var currAdvertisingExitNode bool
 	for _, r := range prefs.AdvertiseRoutes {
-		if tsaddr.IsExitRoute(r) {
+		if r == exitNodeRouteV4 || r == exitNodeRouteV6 {
 			currAdvertisingExitNode = true
 			continue
 		}
@@ -1082,11 +922,18 @@ func (s *Server) servePostRoutes(ctx context.Context, data postRoutesRequest) er
 	routesStr := strings.Join(data.AdvertiseRoutes, ",")
 	routes, err := netutil.CalcAdvertiseRoutes(routesStr, data.AdvertiseExitNode)
 	if err != nil {
-		return err
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
 	}
 
-	if !data.UseExitNode.IsZero() && tsaddr.ContainsExitRoutes(views.SliceOf(routes)) {
-		return errors.New("cannot use and advertise exit node at same time")
+	hasExitNodeRoute := func(all []netip.Prefix) bool {
+		return slices.Contains(all, exitNodeRouteV4) ||
+			slices.Contains(all, exitNodeRouteV6)
+	}
+
+	if !data.UseExitNode.IsZero() && hasExitNodeRoute(routes) {
+		http.Error(w, "cannot use and advertise exit node at same time", http.StatusBadRequest)
+		return
 	}
 
 	// Make prefs update.
@@ -1098,8 +945,12 @@ func (s *Server) servePostRoutes(ctx context.Context, data postRoutesRequest) er
 			AdvertiseRoutes: routes,
 		},
 	}
-	_, err = s.lc.EditPrefs(ctx, p)
-	return err
+	if _, err := s.lc.EditPrefs(r.Context(), p); err != nil {
+		http.Error(w, err.Error(), http.StatusInternalServerError)
+		return
+	}
+
+	w.WriteHeader(http.StatusOK)
 }
 
 // tailscaleUp starts the daemon with the provided options.
@@ -1144,15 +995,7 @@ func (s *Server) tailscaleUp(ctx context.Context, st *ipnstate.Status, opt tails
 		if !isRunning {
 			ipnOptions := ipn.Options{AuthKey: opt.AuthKey}
 			if opt.ControlURL != "" {
-				_, err := s.lc.EditPrefs(ctx, &ipn.MaskedPrefs{
-					Prefs: ipn.Prefs{
-						ControlURL: opt.ControlURL,
-					},
-					ControlURLSet: true,
-				})
-				if err != nil {
-					s.logf("edit prefs: %v", err)
-				}
+				ipnOptions.UpdatePrefs = &ipn.Prefs{ControlURL: opt.ControlURL}
 			}
 			if err := s.lc.Start(ctx, ipnOptions); err != nil {
 				s.logf("start: %v", err)
@@ -1246,12 +1089,26 @@ func (s *Server) serveDeviceDetailsClick(w http.ResponseWriter, r *http.Request)
 //
 // The web API request path is expected to exactly match a localapi path,
 // with prefix /api/local/ rather than /localapi/.
+//
+// If the localapi path is not included in localapiAllowlist,
+// the request is rejected.
 func (s *Server) proxyRequestToLocalAPI(w http.ResponseWriter, r *http.Request) {
 	path := strings.TrimPrefix(r.URL.Path, "/api/local")
 	if r.URL.Path == path { // missing prefix
 		http.Error(w, "invalid request", http.StatusBadRequest)
 		return
 	}
+	if r.Method == httpm.PATCH {
+		// enforce that PATCH requests are always application/json
+		if ct := r.Header.Get("Content-Type"); ct != "application/json" {
+			http.Error(w, "invalid request", http.StatusBadRequest)
+			return
+		}
+	}
+	if !slices.Contains(localapiAllowlist, path) {
+		http.Error(w, fmt.Sprintf("%s not allowed from localapi proxy", path), http.StatusForbidden)
+		return
+	}
 
 	localAPIURL := "http://" + apitype.LocalAPIHost + "/localapi" + path
 	req, err := http.NewRequestWithContext(r.Context(), r.Method, localAPIURL, r.Body)
@@ -1276,6 +1133,21 @@ func (s *Server) proxyRequestToLocalAPI(w http.ResponseWriter, r *http.Request)
 	}
 }
 
+// localapiAllowlist is an allowlist of localapi endpoints the
+// web client is allowed to proxy to the client's localapi.
+//
+// Rather than exposing all localapi endpoints over the proxy,
+// this limits to just the ones actually used from the web
+// client frontend.
+var localapiAllowlist = []string{
+	"/v0/logout",
+	"/v0/prefs",
+	"/v0/update/check",
+	"/v0/update/install",
+	"/v0/update/progress",
+	"/v0/upload-client-metrics",
+}
+
 // csrfKey returns a key that can be used for CSRF protection.
 // If an error occurs during key creation, the error is logged and the active process terminated.
 // If the server is running in CGI mode, the key is cached to disk and reused between requests.

client/web/web_test.go

@@ -4,14 +4,12 @@
 package web
 
 import (
-	"bytes"
 	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
 	"io"
 	"net/http"
-	"net/http/cookiejar"
 	"net/http/httptest"
 	"net/netip"
 	"net/url"
@@ -21,8 +19,7 @@ import (
 	"time"
 
 	"github.com/google/go-cmp/cmp"
-	"github.com/gorilla/csrf"
-	"tailscale.com/client/local"
+	"tailscale.com/client/tailscale"
 	"tailscale.com/client/tailscale/apitype"
 	"tailscale.com/ipn"
 	"tailscale.com/ipn/ipnstate"
@@ -89,172 +86,75 @@ func TestQnapAuthnURL(t *testing.T) {
 
 // TestServeAPI tests the web client api's handling of
 //  1. invalid endpoint errors
-//  2. permissioning of api endpoints based on node capabilities
+//  2. localapi proxy allowlist
 func TestServeAPI(t *testing.T) {
-	selfTags := views.SliceOf([]string{"tag:server"})
-	self := &ipnstate.PeerStatus{ID: "self", Tags: &selfTags}
-	prefs := &ipn.Prefs{}
-
-	remoteUser := &tailcfg.UserProfile{ID: tailcfg.UserID(1)}
-	remoteIPWithAllCapabilities := "100.100.100.101"
-	remoteIPWithNoCapabilities := "100.100.100.102"
-
 	lal := memnet.Listen("local-tailscaled.sock:80")
 	defer lal.Close()
-	localapi := mockLocalAPI(t,
-		map[string]*apitype.WhoIsResponse{
-			remoteIPWithAllCapabilities: {
-				Node:        &tailcfg.Node{StableID: "node1"},
-				UserProfile: remoteUser,
-				CapMap:      tailcfg.PeerCapMap{tailcfg.PeerCapabilityWebUI: []tailcfg.RawMessage{"{\"canEdit\":[\"*\"]}"}},
-			},
-			remoteIPWithNoCapabilities: {
-				Node:        &tailcfg.Node{StableID: "node2"},
-				UserProfile: remoteUser,
-			},
-		},
-		func() *ipnstate.PeerStatus { return self },
-		func() *ipn.Prefs { return prefs },
-		nil,
-	)
+	// Serve dummy localapi. Just returns "success".
+	localapi := &http.Server{Handler: http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		fmt.Fprintf(w, "success")
+	})}
 	defer localapi.Close()
+
 	go localapi.Serve(lal)
-
-	s := &Server{
-		mode:    ManageServerMode,
-		lc:      &local.Client{Dial: lal.Dial},
-		timeNow: time.Now,
-	}
-
-	type requestTest struct {
-		remoteIP     string
-		wantResponse string
-		wantStatus   int
-	}
+	s := &Server{lc: &tailscale.LocalClient{Dial: lal.Dial}}
 
 	tests := []struct {
-		reqPath        string
+		name           string
 		reqMethod      string
+		reqPath        string
 		reqContentType string
-		reqBody        string
-		tests          []requestTest
+		wantResp       string
+		wantStatus     int
 	}{{
-		reqPath:   "/not-an-endpoint",
-		reqMethod: httpm.POST,
-		tests: []requestTest{{
-			remoteIP:     remoteIPWithNoCapabilities,
-			wantResponse: "invalid endpoint",
-			wantStatus:   http.StatusNotFound,
-		}, {
-			remoteIP:     remoteIPWithAllCapabilities,
-			wantResponse: "invalid endpoint",
-			wantStatus:   http.StatusNotFound,
-		}},
+		name:       "invalid_endpoint",
+		reqMethod:  httpm.POST,
+		reqPath:    "/not-an-endpoint",
+		wantResp:   "invalid endpoint",
+		wantStatus: http.StatusNotFound,
 	}, {
-		reqPath:   "/local/v0/not-an-endpoint",
-		reqMethod: httpm.POST,
-		tests: []requestTest{{
-			remoteIP:     remoteIPWithNoCapabilities,
-			wantResponse: "invalid endpoint",
-			wantStatus:   http.StatusNotFound,
-		}, {
-			remoteIP:     remoteIPWithAllCapabilities,
-			wantResponse: "invalid endpoint",
-			wantStatus:   http.StatusNotFound,
-		}},
+		name:       "not_in_localapi_allowlist",
+		reqMethod:  httpm.POST,
+		reqPath:    "/local/v0/not-allowlisted",
+		wantResp:   "/v0/not-allowlisted not allowed from localapi proxy",
+		wantStatus: http.StatusForbidden,
 	}, {
-		reqPath:   "/local/v0/logout",
-		reqMethod: httpm.POST,
-		tests: []requestTest{{
-			remoteIP:     remoteIPWithNoCapabilities,
-			wantResponse: "not allowed", // requesting node has insufficient permissions
-			wantStatus:   http.StatusUnauthorized,
-		}, {
-			remoteIP:     remoteIPWithAllCapabilities,
-			wantResponse: "success", // requesting node has sufficient permissions
-			wantStatus:   http.StatusOK,
-		}},
+		name:       "in_localapi_allowlist",
+		reqMethod:  httpm.POST,
+		reqPath:    "/local/v0/logout",
+		wantResp:   "success", // Successfully allowed to hit localapi.
+		wantStatus: http.StatusOK,
 	}, {
-		reqPath:   "/exit-nodes",
-		reqMethod: httpm.GET,
-		tests: []requestTest{{
-			remoteIP:     remoteIPWithNoCapabilities,
-			wantResponse: "null",
-			wantStatus:   http.StatusOK, // allowed, no additional capabilities required
-		}, {
-			remoteIP:     remoteIPWithAllCapabilities,
-			wantResponse: "null",
-			wantStatus:   http.StatusOK,
-		}},
-	}, {
-		reqPath:   "/routes",
-		reqMethod: httpm.POST,
-		reqBody:   "{\"setExitNode\":true}",
-		tests: []requestTest{{
-			remoteIP:     remoteIPWithNoCapabilities,
-			wantResponse: "not allowed",
-			wantStatus:   http.StatusUnauthorized,
-		}, {
-			remoteIP:   remoteIPWithAllCapabilities,
-			wantStatus: http.StatusOK,
-		}},
-	}, {
-		reqPath:        "/local/v0/prefs",
+		name:           "patch_bad_contenttype",
 		reqMethod:      httpm.PATCH,
-		reqBody:        "{\"runSSHSet\":true}",
-		reqContentType: "application/json",
-		tests: []requestTest{{
-			remoteIP:     remoteIPWithNoCapabilities,
-			wantResponse: "not allowed",
-			wantStatus:   http.StatusUnauthorized,
-		}, {
-			remoteIP:   remoteIPWithAllCapabilities,
-			wantStatus: http.StatusOK,
-		}},
-	}, {
 		reqPath:        "/local/v0/prefs",
-		reqMethod:      httpm.PATCH,
 		reqContentType: "multipart/form-data",
-		tests: []requestTest{{
-			remoteIP:     remoteIPWithNoCapabilities,
-			wantResponse: "invalid request",
-			wantStatus:   http.StatusBadRequest,
-		}, {
-			remoteIP:     remoteIPWithAllCapabilities,
-			wantResponse: "invalid request",
-			wantStatus:   http.StatusBadRequest,
-		}},
+		wantResp:       "invalid request",
+		wantStatus:     http.StatusBadRequest,
 	}}
 	for _, tt := range tests {
-		for _, req := range tt.tests {
-			t.Run(req.remoteIP+"_requesting_"+tt.reqPath, func(t *testing.T) {
-				var reqBody io.Reader
-				if tt.reqBody != "" {
-					reqBody = bytes.NewBuffer([]byte(tt.reqBody))
-				}
-				r := httptest.NewRequest(tt.reqMethod, "/api"+tt.reqPath, reqBody)
-				r.RemoteAddr = req.remoteIP
-				if tt.reqContentType != "" {
-					r.Header.Add("Content-Type", tt.reqContentType)
-				}
-				w := httptest.NewRecorder()
+		t.Run(tt.name, func(t *testing.T) {
+			r := httptest.NewRequest(tt.reqMethod, "/api"+tt.reqPath, nil)
+			if tt.reqContentType != "" {
+				r.Header.Add("Content-Type", tt.reqContentType)
+			}
+			w := httptest.NewRecorder()
 
-				s.serveAPI(w, r)
-				res := w.Result()
-				defer res.Body.Close()
-				if gotStatus := res.StatusCode; req.wantStatus != gotStatus {
-					t.Errorf("wrong status; want=%v, got=%v", req.wantStatus, gotStatus)
-				}
-				body, err := io.ReadAll(res.Body)
-				if err != nil {
-					t.Fatal(err)
-				}
-				gotResp := strings.TrimSuffix(string(body), "\n") // trim trailing newline
-				if req.wantResponse != gotResp {
-					t.Errorf("wrong response; want=%q, got=%q", req.wantResponse, gotResp)
-				}
-			})
-		}
+			s.serveAPI(w, r)
+			res := w.Result()
+			defer res.Body.Close()
+			if gotStatus := res.StatusCode; tt.wantStatus != gotStatus {
+				t.Errorf("wrong status; want=%v, got=%v", tt.wantStatus, gotStatus)
+			}
+			body, err := io.ReadAll(res.Body)
+			if err != nil {
+				t.Fatal(err)
+			}
+			gotResp := strings.TrimSuffix(string(body), "\n") // trim trailing newline
+			if tt.wantResp != gotResp {
+				t.Errorf("wrong response; want=%q, got=%q", tt.wantResp, gotResp)
+			}
+		})
 	}
 }
 
@@ -290,7 +190,7 @@ func TestGetTailscaleBrowserSession(t *testing.T) {
 
 	s := &Server{
 		timeNow: time.Now,
-		lc:      &local.Client{Dial: lal.Dial},
+		lc:      &tailscale.LocalClient{Dial: lal.Dial},
 	}
 
 	// Add some browser sessions to cache state.
@@ -459,7 +359,7 @@ func TestAuthorizeRequest(t *testing.T) {
 
 	s := &Server{
 		mode:    ManageServerMode,
-		lc:      &local.Client{Dial: lal.Dial},
+		lc:      &tailscale.LocalClient{Dial: lal.Dial},
 		timeNow: time.Now,
 	}
 	validCookie := "ts-cookie"
@@ -574,7 +474,7 @@ func TestServeAuth(t *testing.T) {
 
 	s := &Server{
 		mode:        ManageServerMode,
-		lc:          &local.Client{Dial: lal.Dial},
+		lc:          &tailscale.LocalClient{Dial: lal.Dial},
 		timeNow:     func() time.Time { return timeNow },
 		newAuthURL:  mockNewAuthURL,
 		waitAuthURL: mockWaitAuthURL,
@@ -624,7 +524,7 @@ func TestServeAuth(t *testing.T) {
 			name:          "no-session",
 			path:          "/api/auth",
 			wantStatus:    http.StatusOK,
-			wantResp:      &authResponse{ViewerIdentity: vi, ServerMode: ManageServerMode},
+			wantResp:      &authResponse{AuthNeeded: tailscaleAuth, ViewerIdentity: vi, ServerMode: ManageServerMode},
 			wantNewCookie: false,
 			wantSession:   nil,
 		},
@@ -649,7 +549,7 @@ func TestServeAuth(t *testing.T) {
 			path:       "/api/auth",
 			cookie:     successCookie,
 			wantStatus: http.StatusOK,
-			wantResp:   &authResponse{ViewerIdentity: vi, ServerMode: ManageServerMode},
+			wantResp:   &authResponse{AuthNeeded: tailscaleAuth, ViewerIdentity: vi, ServerMode: ManageServerMode},
 			wantSession: &browserSession{
 				ID:            successCookie,
 				SrcNode:       remoteNode.Node.ID,
@@ -697,7 +597,7 @@ func TestServeAuth(t *testing.T) {
 			path:       "/api/auth",
 			cookie:     successCookie,
 			wantStatus: http.StatusOK,
-			wantResp:   &authResponse{Authorized: true, ViewerIdentity: vi, ServerMode: ManageServerMode},
+			wantResp:   &authResponse{CanManageNode: true, ViewerIdentity: vi, ServerMode: ManageServerMode},
 			wantSession: &browserSession{
 				ID:            successCookie,
 				SrcNode:       remoteNode.Node.ID,
@@ -916,7 +816,7 @@ func TestServeAPIAuthMetricLogging(t *testing.T) {
 
 	s := &Server{
 		mode:        ManageServerMode,
-		lc:          &local.Client{Dial: lal.Dial},
+		lc:          &tailscale.LocalClient{Dial: lal.Dial},
 		timeNow:     func() time.Time { return timeNow },
 		newAuthURL:  mockNewAuthURL,
 		waitAuthURL: mockWaitAuthURL,
@@ -1128,7 +1028,7 @@ func TestRequireTailscaleIP(t *testing.T) {
 
 	s := &Server{
 		mode:    ManageServerMode,
-		lc:      &local.Client{Dial: lal.Dial},
+		lc:      &tailscale.LocalClient{Dial: lal.Dial},
 		timeNow: time.Now,
 		logf:    t.Logf,
 	}
@@ -1177,16 +1077,6 @@ func TestRequireTailscaleIP(t *testing.T) {
 			target:      "http://[fd7a:115c:a1e0::53]/",
 			wantHandled: false,
 		},
-		{
-			name:        "quad-100:80",
-			target:      "http://100.100.100.100:80/",
-			wantHandled: false,
-		},
-		{
-			name:        "ipv6-service-addr:80",
-			target:      "http://[fd7a:115c:a1e0::53]:80/",
-			wantHandled: false,
-		},
 	}
 
 	for _, tt := range tests {
@@ -1231,10 +1121,9 @@ func TestPeerCapabilities(t *testing.T) {
 			status: userOwnedStatus,
 			whois: &apitype.WhoIsResponse{
 				UserProfile: &tailcfg.UserProfile{ID: tailcfg.UserID(2)},
-				Node:        &tailcfg.Node{ID: tailcfg.NodeID(1)},
 				CapMap: tailcfg.PeerCapMap{
 					tailcfg.PeerCapabilityWebUI: []tailcfg.RawMessage{
-						"{\"canEdit\":[\"ssh\",\"subnets\"]}",
+						"{\"canEdit\":[\"ssh\",\"subnet\"]}",
 					},
 				},
 			},
@@ -1245,10 +1134,9 @@ func TestPeerCapabilities(t *testing.T) {
 			status: userOwnedStatus,
 			whois: &apitype.WhoIsResponse{
 				UserProfile: &tailcfg.UserProfile{ID: tailcfg.UserID(1)},
-				Node:        &tailcfg.Node{ID: tailcfg.NodeID(1)},
 				CapMap: tailcfg.PeerCapMap{
 					tailcfg.PeerCapabilityWebUI: []tailcfg.RawMessage{
-						"{\"canEdit\":[\"ssh\",\"subnets\"]}",
+						"{\"canEdit\":[\"ssh\",\"subnet\"]}",
 					},
 				},
 			},
@@ -1258,7 +1146,6 @@ func TestPeerCapabilities(t *testing.T) {
 			name:   "tag-owned-no-webui-caps",
 			status: tagOwnedStatus,
 			whois: &apitype.WhoIsResponse{
-				Node: &tailcfg.Node{ID: tailcfg.NodeID(1)},
 				CapMap: tailcfg.PeerCapMap{
 					tailcfg.PeerCapabilityDebugPeer: []tailcfg.RawMessage{},
 				},
@@ -1269,71 +1156,68 @@ func TestPeerCapabilities(t *testing.T) {
 			name:   "tag-owned-one-webui-cap",
 			status: tagOwnedStatus,
 			whois: &apitype.WhoIsResponse{
-				Node: &tailcfg.Node{ID: tailcfg.NodeID(1)},
 				CapMap: tailcfg.PeerCapMap{
 					tailcfg.PeerCapabilityWebUI: []tailcfg.RawMessage{
-						"{\"canEdit\":[\"ssh\",\"subnets\"]}",
+						"{\"canEdit\":[\"ssh\",\"subnet\"]}",
 					},
 				},
 			},
 			wantCaps: peerCapabilities{
-				capFeatureSSH:     true,
-				capFeatureSubnets: true,
+				capFeatureSSH:    true,
+				capFeatureSubnet: true,
 			},
 		},
 		{
 			name:   "tag-owned-multiple-webui-cap",
 			status: tagOwnedStatus,
 			whois: &apitype.WhoIsResponse{
-				Node: &tailcfg.Node{ID: tailcfg.NodeID(1)},
 				CapMap: tailcfg.PeerCapMap{
 					tailcfg.PeerCapabilityWebUI: []tailcfg.RawMessage{
-						"{\"canEdit\":[\"ssh\",\"subnets\"]}",
-						"{\"canEdit\":[\"subnets\",\"exitnodes\",\"*\"]}",
+						"{\"canEdit\":[\"ssh\",\"subnet\"]}",
+						"{\"canEdit\":[\"subnet\",\"exitnode\",\"*\"]}",
 					},
 				},
 			},
 			wantCaps: peerCapabilities{
-				capFeatureSSH:       true,
-				capFeatureSubnets:   true,
-				capFeatureExitNodes: true,
-				capFeatureAll:       true,
+				capFeatureSSH:      true,
+				capFeatureSubnet:   true,
+				capFeatureExitNode: true,
+				capFeatureAll:      true,
 			},
 		},
 		{
 			name:   "tag-owned-case-insensitive-caps",
 			status: tagOwnedStatus,
 			whois: &apitype.WhoIsResponse{
-				Node: &tailcfg.Node{ID: tailcfg.NodeID(1)},
 				CapMap: tailcfg.PeerCapMap{
 					tailcfg.PeerCapabilityWebUI: []tailcfg.RawMessage{
-						"{\"canEdit\":[\"SSH\",\"sUBnets\"]}",
+						"{\"canEdit\":[\"SSH\",\"sUBnet\"]}",
 					},
 				},
 			},
 			wantCaps: peerCapabilities{
-				capFeatureSSH:     true,
-				capFeatureSubnets: true,
+				capFeatureSSH:    true,
+				capFeatureSubnet: true,
 			},
 		},
 		{
-			name:   "tag-owned-random-canEdit-contents-get-dropped",
+			name:   "tag-owned-random-canEdit-contents-dont-error",
 			status: tagOwnedStatus,
 			whois: &apitype.WhoIsResponse{
-				Node: &tailcfg.Node{ID: tailcfg.NodeID(1)},
 				CapMap: tailcfg.PeerCapMap{
 					tailcfg.PeerCapabilityWebUI: []tailcfg.RawMessage{
 						"{\"canEdit\":[\"unknown-feature\"]}",
 					},
 				},
 			},
-			wantCaps: peerCapabilities{},
+			wantCaps: peerCapabilities{
+				"unknown-feature": true,
+			},
 		},
 		{
 			name:   "tag-owned-no-canEdit-section",
 			status: tagOwnedStatus,
 			whois: &apitype.WhoIsResponse{
-				Node: &tailcfg.Node{ID: tailcfg.NodeID(1)},
 				CapMap: tailcfg.PeerCapMap{
 					tailcfg.PeerCapabilityWebUI: []tailcfg.RawMessage{
 						"{\"canDoSomething\":[\"*\"]}",
@@ -1342,19 +1226,6 @@ func TestPeerCapabilities(t *testing.T) {
 			},
 			wantCaps: peerCapabilities{},
 		},
-		{
-			name:   "tagged-source-caps-ignored",
-			status: tagOwnedStatus,
-			whois: &apitype.WhoIsResponse{
-				Node: &tailcfg.Node{ID: tailcfg.NodeID(1), Tags: tags.AsSlice()},
-				CapMap: tailcfg.PeerCapMap{
-					tailcfg.PeerCapabilityWebUI: []tailcfg.RawMessage{
-						"{\"canEdit\":[\"ssh\",\"subnets\"]}",
-					},
-				},
-			},
-			wantCaps: peerCapabilities{},
-		},
 	}
 	for _, tt := range toPeerCapsTests {
 		t.Run("toPeerCapabilities-"+tt.name, func(t *testing.T) {
@@ -1378,33 +1249,36 @@ func TestPeerCapabilities(t *testing.T) {
 			name: "empty-caps",
 			caps: nil,
 			wantCanEdit: map[capFeature]bool{
-				capFeatureAll:       false,
-				capFeatureSSH:       false,
-				capFeatureSubnets:   false,
-				capFeatureExitNodes: false,
-				capFeatureAccount:   false,
+				capFeatureAll:      false,
+				capFeatureFunnel:   false,
+				capFeatureSSH:      false,
+				capFeatureSubnet:   false,
+				capFeatureExitNode: false,
+				capFeatureAccount:  false,
 			},
 		},
 		{
 			name: "some-caps",
 			caps: peerCapabilities{capFeatureSSH: true, capFeatureAccount: true},
 			wantCanEdit: map[capFeature]bool{
-				capFeatureAll:       false,
-				capFeatureSSH:       true,
-				capFeatureSubnets:   false,
-				capFeatureExitNodes: false,
-				capFeatureAccount:   true,
+				capFeatureAll:      false,
+				capFeatureFunnel:   false,
+				capFeatureSSH:      true,
+				capFeatureSubnet:   false,
+				capFeatureExitNode: false,
+				capFeatureAccount:  true,
 			},
 		},
 		{
 			name: "wildcard-in-caps",
 			caps: peerCapabilities{capFeatureAll: true, capFeatureAccount: true},
 			wantCanEdit: map[capFeature]bool{
-				capFeatureAll:       true,
-				capFeatureSSH:       true,
-				capFeatureSubnets:   true,
-				capFeatureExitNodes: true,
-				capFeatureAccount:   true,
+				capFeatureAll:      true,
+				capFeatureFunnel:   true,
+				capFeatureSSH:      true,
+				capFeatureSubnet:   true,
+				capFeatureExitNode: true,
+				capFeatureAccount:  true,
 			},
 		},
 	}
@@ -1465,9 +1339,6 @@ func mockLocalAPI(t *testing.T, whoIs map[string]*apitype.WhoIsResponse, self fu
 			metricCapture(metricNames[0].Name)
 			writeJSON(w, struct{}{})
 			return
-		case "/localapi/v0/logout":
-			fmt.Fprintf(w, "success")
-			return
 		default:
 			t.Fatalf("unhandled localapi test endpoint %q, add to localapi handler func in test", r.URL.Path)
 		}
@@ -1489,83 +1360,3 @@ func mockWaitAuthURL(_ context.Context, id string, src tailcfg.NodeID) (*tailcfg
 		return nil, errors.New("unknown id")
 	}
 }
-
-func TestCSRFProtect(t *testing.T) {
-	s := &Server{}
-
-	mux := http.NewServeMux()
-	mux.HandleFunc("GET /test/csrf-token", func(w http.ResponseWriter, r *http.Request) {
-		token := csrf.Token(r)
-		_, err := io.WriteString(w, token)
-		if err != nil {
-			t.Fatal(err)
-		}
-	})
-	mux.HandleFunc("POST /test/csrf-protected", func(w http.ResponseWriter, r *http.Request) {
-		_, err := io.WriteString(w, "ok")
-		if err != nil {
-			t.Fatal(err)
-		}
-	})
-	h := s.withCSRF(mux)
-	ser := httptest.NewServer(h)
-	defer ser.Close()
-
-	jar, err := cookiejar.New(nil)
-	if err != nil {
-		t.Fatalf("unable to construct cookie jar: %v", err)
-	}
-
-	client := ser.Client()
-	client.Jar = jar
-
-	// make GET request to populate cookie jar
-	resp, err := client.Get(ser.URL + "/test/csrf-token")
-	if err != nil {
-		t.Fatalf("unable to make request: %v", err)
-	}
-	defer resp.Body.Close()
-	if resp.StatusCode != http.StatusOK {
-		t.Fatalf("unexpected status: %v", resp.Status)
-	}
-	tokenBytes, err := io.ReadAll(resp.Body)
-	if err != nil {
-		t.Fatalf("unable to read body: %v", err)
-	}
-
-	csrfToken := strings.TrimSpace(string(tokenBytes))
-	if csrfToken == "" {
-		t.Fatal("empty csrf token")
-	}
-
-	// make a POST request without the CSRF header; ensure it fails
-	resp, err = client.Post(ser.URL+"/test/csrf-protected", "text/plain", nil)
-	if err != nil {
-		t.Fatalf("unable to make request: %v", err)
-	}
-	if resp.StatusCode != http.StatusForbidden {
-		t.Fatalf("unexpected status: %v", resp.Status)
-	}
-
-	// make a POST request with the CSRF header; ensure it succeeds
-	req, err := http.NewRequest("POST", ser.URL+"/test/csrf-protected", nil)
-	if err != nil {
-		t.Fatalf("error building request: %v", err)
-	}
-	req.Header.Set("X-CSRF-Token", csrfToken)
-	resp, err = client.Do(req)
-	if err != nil {
-		t.Fatalf("unable to make request: %v", err)
-	}
-	if resp.StatusCode != http.StatusOK {
-		t.Fatalf("unexpected status: %v", resp.Status)
-	}
-	defer resp.Body.Close()
-	out, err := io.ReadAll(resp.Body)
-	if err != nil {
-		t.Fatalf("unable to read body: %v", err)
-	}
-	if string(out) != "ok" {
-		t.Fatalf("unexpected body: %q", out)
-	}
-}

clientupdate/clientupdate.go

@@ -27,27 +27,21 @@ import (
 	"strconv"
 	"strings"
 
-	"tailscale.com/hostinfo"
-	"tailscale.com/types/lazy"
+	"github.com/google/uuid"
+	"tailscale.com/clientupdate/distsign"
 	"tailscale.com/types/logger"
 	"tailscale.com/util/cmpver"
+	"tailscale.com/util/winutil"
 	"tailscale.com/version"
 	"tailscale.com/version/distro"
 )
 
 const (
+	CurrentTrack  = ""
 	StableTrack   = "stable"
 	UnstableTrack = "unstable"
 )
 
-var CurrentTrack = func() string {
-	if version.IsUnstableBuild() {
-		return UnstableTrack
-	} else {
-		return StableTrack
-	}
-}()
-
 func versionToTrack(v string) (string, error) {
 	_, rest, ok := strings.Cut(v, ".")
 	if !ok {
@@ -112,7 +106,7 @@ func (args Arguments) validate() error {
 		return fmt.Errorf("only one of Version(%q) or Track(%q) can be set", args.Version, args.Track)
 	}
 	switch args.Track {
-	case StableTrack, UnstableTrack, "":
+	case StableTrack, UnstableTrack, CurrentTrack:
 		// All valid values.
 	default:
 		return fmt.Errorf("unsupported track %q", args.Track)
@@ -125,17 +119,11 @@ type Updater struct {
 	// Update is a platform-specific method that updates the installation. May be
 	// nil (not all platforms support updates from within Tailscale).
 	Update func() error
-
-	// currentVersion is the short form of the current client version as
-	// returned by version.Short(), typically "x.y.z". Used for tests to
-	// override the actual current version.
-	currentVersion string
 }
 
 func NewUpdater(args Arguments) (*Updater, error) {
 	up := Updater{
-		Arguments:      args,
-		currentVersion: version.Short(),
+		Arguments: args,
 	}
 	if up.Stdout == nil {
 		up.Stdout = os.Stdout
@@ -151,15 +139,18 @@ func NewUpdater(args Arguments) (*Updater, error) {
 	if args.ForAutoUpdate && !canAutoUpdate {
 		return nil, errors.ErrUnsupported
 	}
-	if up.Track == "" {
-		if up.Version != "" {
+	if up.Track == CurrentTrack {
+		switch {
+		case up.Version != "":
 			var err error
 			up.Track, err = versionToTrack(args.Version)
 			if err != nil {
 				return nil, err
 			}
-		} else {
-			up.Track = CurrentTrack
+		case version.IsUnstableBuild():
+			up.Track = UnstableTrack
+		default:
+			up.Track = StableTrack
 		}
 	}
 	if up.Arguments.PkgsAddr == "" {
@@ -171,12 +162,6 @@ func NewUpdater(args Arguments) (*Updater, error) {
 type updateFunction func() error
 
 func (up *Updater) getUpdateFunction() (fn updateFunction, canAutoUpdate bool) {
-	hi := hostinfo.New()
-	// We don't know how to update custom tsnet binaries, it's up to the user.
-	if hi.Package == "tsnet" {
-		return nil, false
-	}
-
 	switch runtime.GOOS {
 	case "windows":
 		return up.updateWindows, true
@@ -250,18 +235,9 @@ func (up *Updater) getUpdateFunction() (fn updateFunction, canAutoUpdate bool) {
 	return nil, false
 }
 
-var canAutoUpdateCache lazy.SyncValue[bool]
-
 // CanAutoUpdate reports whether auto-updating via the clientupdate package
 // is supported for the current os/distro.
-func CanAutoUpdate() bool { return canAutoUpdateCache.Get(canAutoUpdateUncached) }
-
-func canAutoUpdateUncached() bool {
-	if version.IsMacSysExt() {
-		// Macsys uses Sparkle for auto-updates, which doesn't have an update
-		// function in this package.
-		return true
-	}
+func CanAutoUpdate() bool {
 	_, canAutoUpdate := (&Updater{}).getUpdateFunction()
 	return canAutoUpdate
 }
@@ -283,16 +259,13 @@ func Update(args Arguments) error {
 }
 
 func (up *Updater) confirm(ver string) bool {
-	// Only check version when we're not switching tracks.
-	if up.Track == "" || up.Track == CurrentTrack {
-		switch c := cmpver.Compare(up.currentVersion, ver); {
-		case c == 0:
-			up.Logf("already running %v version %v; no update needed", up.Track, ver)
-			return false
-		case c > 0:
-			up.Logf("installed %v version %v is newer than the latest available version %v; no update needed", up.Track, up.currentVersion, ver)
-			return false
-		}
+	switch cmpver.Compare(version.Short(), ver) {
+	case 0:
+		up.Logf("already running %v version %v; no update needed", up.Track, ver)
+		return false
+	case 1:
+		up.Logf("installed %v version %v is newer than the latest available version %v; no update needed", up.Track, version.Short(), ver)
+		return false
 	}
 	if up.Confirm != nil {
 		return up.Confirm(ver)
@@ -463,7 +436,7 @@ func (up *Updater) updateDebLike() error {
 		return fmt.Errorf("apt-get update failed: %w; output:\n%s", err, out)
 	}
 
-	for range 2 {
+	for i := 0; i < 2; i++ {
 		out, err := exec.Command("apt-get", "install", "--yes", "--allow-downgrades", "tailscale="+ver).CombinedOutput()
 		if err != nil {
 			if !bytes.Contains(out, []byte(`dpkg was interrupted`)) {
@@ -678,9 +651,6 @@ func (up *Updater) updateAlpineLike() (err error) {
 		return fmt.Errorf(`failed to parse latest version from "apk info tailscale": %w`, err)
 	}
 	if !up.confirm(ver) {
-		if err := checkOutdatedAlpineRepo(up.Logf, ver, up.Track); err != nil {
-			up.Logf("failed to check whether Alpine release is outdated: %v", err)
-		}
 		return nil
 	}
 
@@ -695,7 +665,6 @@ func (up *Updater) updateAlpineLike() (err error) {
 
 func parseAlpinePackageVersion(out []byte) (string, error) {
 	s := bufio.NewScanner(bytes.NewReader(out))
-	var maxVer string
 	for s.Scan() {
 		// The line should look like this:
 		// tailscale-1.44.2-r0 description:
@@ -707,48 +676,11 @@ func parseAlpinePackageVersion(out []byte) (string, error) {
 		if len(parts) < 3 {
 			return "", fmt.Errorf("malformed info line: %q", line)
 		}
-		ver := parts[1]
-		if cmpver.Compare(ver, maxVer) > 0 {
-			maxVer = ver
-		}
-	}
-	if maxVer != "" {
-		return maxVer, nil
+		return parts[1], nil
 	}
 	return "", errors.New("tailscale version not found in output")
 }
 
-var apkRepoVersionRE = regexp.MustCompile(`v[0-9]+\.[0-9]+`)
-
-func checkOutdatedAlpineRepo(logf logger.Logf, apkVer, track string) error {
-	latest, err := LatestTailscaleVersion(track)
-	if err != nil {
-		return err
-	}
-	if latest == apkVer {
-		// Actually on latest release.
-		return nil
-	}
-	f, err := os.Open("/etc/apk/repositories")
-	if err != nil {
-		return err
-	}
-	defer f.Close()
-	// Read the first repo line. Typically, there are multiple repos that all
-	// contain the same version in the path, like:
-	//   https://dl-cdn.alpinelinux.org/alpine/v3.20/main
-	//   https://dl-cdn.alpinelinux.org/alpine/v3.20/community
-	s := bufio.NewScanner(f)
-	if !s.Scan() {
-		return s.Err()
-	}
-	alpineVer := apkRepoVersionRE.FindString(s.Text())
-	if alpineVer != "" {
-		logf("The latest Tailscale release for Linux is %q, but your apk repository only provides %q.\nYour Alpine version is %q, you may need to upgrade the system to get the latest Tailscale version: https://wiki.alpinelinux.org/wiki/Upgrading_Alpine", latest, apkVer, alpineVer)
-	}
-	return nil
-}
-
 func (up *Updater) updateMacSys() error {
 	return errors.New("NOTREACHED: On MacSys builds, `tailscale update` is handled in Swift to launch the GUI updater")
 }
@@ -765,6 +697,164 @@ func (up *Updater) updateMacAppStore() error {
 	return nil
 }
 
+const (
+	// winMSIEnv is the environment variable that, if set, is the MSI file for
+	// the update command to install. It's passed like this so we can stop the
+	// tailscale.exe process from running before the msiexec process runs and
+	// tries to overwrite ourselves.
+	winMSIEnv = "TS_UPDATE_WIN_MSI"
+	// winExePathEnv is the environment variable that is set along with
+	// winMSIEnv and carries the full path of the calling tailscale.exe binary.
+	// It is used to re-launch the GUI process (tailscale-ipn.exe) after
+	// install is complete.
+	winExePathEnv = "TS_UPDATE_WIN_EXE_PATH"
+)
+
+var (
+	verifyAuthenticode func(string) error // set non-nil only on Windows
+	markTempFileFunc   func(string) error // set non-nil only on Windows
+)
+
+func (up *Updater) updateWindows() error {
+	if msi := os.Getenv(winMSIEnv); msi != "" {
+		// stdout/stderr from this part of the install could be lost since the
+		// parent tailscaled is replaced. Create a temp log file to have some
+		// output to debug with in case update fails.
+		close, err := up.switchOutputToFile()
+		if err != nil {
+			up.Logf("failed to create log file for installation: %v; proceeding with existing outputs", err)
+		} else {
+			defer close.Close()
+		}
+
+		up.Logf("installing %v ...", msi)
+		if err := up.installMSI(msi); err != nil {
+			up.Logf("MSI install failed: %v", err)
+			return err
+		}
+
+		up.Logf("success.")
+		return nil
+	}
+
+	if !winutil.IsCurrentProcessElevated() {
+		return errors.New(`update must be run as Administrator
+
+you can run the command prompt as Administrator one of these ways:
+* right-click cmd.exe, select 'Run as administrator'
+* press Windows+x, then press a
+* press Windows+r, type in "cmd", then press Ctrl+Shift+Enter`)
+	}
+	ver, err := requestedTailscaleVersion(up.Version, up.Track)
+	if err != nil {
+		return err
+	}
+	arch := runtime.GOARCH
+	if arch == "386" {
+		arch = "x86"
+	}
+	if !up.confirm(ver) {
+		return nil
+	}
+
+	tsDir := filepath.Join(os.Getenv("ProgramData"), "Tailscale")
+	msiDir := filepath.Join(tsDir, "MSICache")
+	if fi, err := os.Stat(tsDir); err != nil {
+		return fmt.Errorf("expected %s to exist, got stat error: %w", tsDir, err)
+	} else if !fi.IsDir() {
+		return fmt.Errorf("expected %s to be a directory; got %v", tsDir, fi.Mode())
+	}
+	if err := os.MkdirAll(msiDir, 0700); err != nil {
+		return err
+	}
+	up.cleanupOldDownloads(filepath.Join(msiDir, "*.msi"))
+	pkgsPath := fmt.Sprintf("%s/tailscale-setup-%s-%s.msi", up.Track, ver, arch)
+	msiTarget := filepath.Join(msiDir, path.Base(pkgsPath))
+	if err := up.downloadURLToFile(pkgsPath, msiTarget); err != nil {
+		return err
+	}
+
+	up.Logf("verifying MSI authenticode...")
+	if err := verifyAuthenticode(msiTarget); err != nil {
+		return fmt.Errorf("authenticode verification of %s failed: %w", msiTarget, err)
+	}
+	up.Logf("authenticode verification succeeded")
+
+	up.Logf("making tailscale.exe copy to switch to...")
+	up.cleanupOldDownloads(filepath.Join(os.TempDir(), "tailscale-updater-*.exe"))
+	selfOrig, selfCopy, err := makeSelfCopy()
+	if err != nil {
+		return err
+	}
+	defer os.Remove(selfCopy)
+	up.Logf("running tailscale.exe copy for final install...")
+
+	cmd := exec.Command(selfCopy, "update")
+	cmd.Env = append(os.Environ(), winMSIEnv+"="+msiTarget, winExePathEnv+"="+selfOrig)
+	cmd.Stdout = up.Stderr
+	cmd.Stderr = up.Stderr
+	cmd.Stdin = os.Stdin
+	if err := cmd.Start(); err != nil {
+		return err
+	}
+	// Once it's started, exit ourselves, so the binary is free
+	// to be replaced.
+	os.Exit(0)
+	panic("unreachable")
+}
+
+func (up *Updater) switchOutputToFile() (io.Closer, error) {
+	var logFilePath string
+	exePath, err := os.Executable()
+	if err != nil {
+		logFilePath = filepath.Join(os.TempDir(), "tailscale-updater.log")
+	} else {
+		logFilePath = strings.TrimSuffix(exePath, ".exe") + ".log"
+	}
+
+	up.Logf("writing update output to %q", logFilePath)
+	logFile, err := os.Create(logFilePath)
+	if err != nil {
+		return nil, err
+	}
+
+	up.Logf = func(m string, args ...any) {
+		fmt.Fprintf(logFile, m+"\n", args...)
+	}
+	up.Stdout = logFile
+	up.Stderr = logFile
+	return logFile, nil
+}
+
+func (up *Updater) installMSI(msi string) error {
+	var err error
+	for tries := 0; tries < 2; tries++ {
+		cmd := exec.Command("msiexec.exe", "/i", filepath.Base(msi), "/quiet", "/promptrestart", "/qn")
+		cmd.Dir = filepath.Dir(msi)
+		cmd.Stdout = up.Stdout
+		cmd.Stderr = up.Stderr
+		cmd.Stdin = os.Stdin
+		err = cmd.Run()
+		if err == nil {
+			break
+		}
+		up.Logf("Install attempt failed: %v", err)
+		uninstallVersion := version.Short()
+		if v := os.Getenv("TS_DEBUG_UNINSTALL_VERSION"); v != "" {
+			uninstallVersion = v
+		}
+		// Assume it's a downgrade, which msiexec won't permit. Uninstall our current version first.
+		up.Logf("Uninstalling current version %q for downgrade...", uninstallVersion)
+		cmd = exec.Command("msiexec.exe", "/x", msiUUIDForVersion(uninstallVersion), "/norestart", "/qn")
+		cmd.Stdout = up.Stdout
+		cmd.Stderr = up.Stderr
+		cmd.Stdin = os.Stdin
+		err = cmd.Run()
+		up.Logf("msiexec uninstall: %v", err)
+	}
+	return err
+}
+
 // cleanupOldDownloads removes all files matching glob (see filepath.Glob).
 // Only regular files are removed, so the glob must match specific files and
 // not directories.
@@ -789,6 +879,53 @@ func (up *Updater) cleanupOldDownloads(glob string) {
 	}
 }
 
+func msiUUIDForVersion(ver string) string {
+	arch := runtime.GOARCH
+	if arch == "386" {
+		arch = "x86"
+	}
+	track, err := versionToTrack(ver)
+	if err != nil {
+		track = UnstableTrack
+	}
+	msiURL := fmt.Sprintf("https://pkgs.tailscale.com/%s/tailscale-setup-%s-%s.msi", track, ver, arch)
+	return "{" + strings.ToUpper(uuid.NewSHA1(uuid.NameSpaceURL, []byte(msiURL)).String()) + "}"
+}
+
+func makeSelfCopy() (origPathExe, tmpPathExe string, err error) {
+	selfExe, err := os.Executable()
+	if err != nil {
+		return "", "", err
+	}
+	f, err := os.Open(selfExe)
+	if err != nil {
+		return "", "", err
+	}
+	defer f.Close()
+	f2, err := os.CreateTemp("", "tailscale-updater-*.exe")
+	if err != nil {
+		return "", "", err
+	}
+	if f := markTempFileFunc; f != nil {
+		if err := f(f2.Name()); err != nil {
+			return "", "", err
+		}
+	}
+	if _, err := io.Copy(f2, f); err != nil {
+		f2.Close()
+		return "", "", err
+	}
+	return selfExe, f2.Name(), f2.Close()
+}
+
+func (up *Updater) downloadURLToFile(pathSrc, fileDst string) (ret error) {
+	c, err := distsign.NewClient(up.Logf, up.PkgsAddr)
+	if err != nil {
+		return err
+	}
+	return c.Download(context.Background(), pathSrc, fileDst)
+}
+
 func (up *Updater) updateFreeBSD() (err error) {
 	if up.Version != "" {
 		return errors.New("installing a specific version on FreeBSD is not supported")
@@ -873,20 +1010,6 @@ func (up *Updater) updateLinuxBinary() error {
 	return nil
 }
 
-func restartSystemdUnit(ctx context.Context) error {
-	if _, err := exec.LookPath("systemctl"); err != nil {
-		// Likely not a systemd-managed distro.
-		return errors.ErrUnsupported
-	}
-	if out, err := exec.Command("systemctl", "daemon-reload").CombinedOutput(); err != nil {
-		return fmt.Errorf("systemctl daemon-reload failed: %w\noutput: %s", err, out)
-	}
-	if out, err := exec.Command("systemctl", "restart", "tailscaled.service").CombinedOutput(); err != nil {
-		return fmt.Errorf("systemctl restart failed: %w\noutput: %s", err, out)
-	}
-	return nil
-}
-
 func (up *Updater) downloadLinuxTarball(ver string) (string, error) {
 	dlDir, err := os.UserCacheDir()
 	if err != nil {
@@ -1153,31 +1276,22 @@ func requestedTailscaleVersion(ver, track string) (string, error) {
 // LatestTailscaleVersion returns the latest released version for the given
 // track from pkgs.tailscale.com.
 func LatestTailscaleVersion(track string) (string, error) {
-	if track == "" {
-		track = CurrentTrack
+	if track == CurrentTrack {
+		if version.IsUnstableBuild() {
+			track = UnstableTrack
+		} else {
+			track = StableTrack
+		}
 	}
 
 	latest, err := latestPackages(track)
 	if err != nil {
 		return "", err
 	}
-	ver := latest.Version
-	switch runtime.GOOS {
-	case "windows":
-		ver = latest.MSIsVersion
-	case "darwin":
-		ver = latest.MacZipsVersion
-	case "linux":
-		ver = latest.TarballsVersion
-		if distro.Get() == distro.Synology {
-			ver = latest.SPKsVersion
-		}
+	if latest.Version == "" {
+		return "", fmt.Errorf("no latest version found for %q track", track)
 	}
-
-	if ver == "" {
-		return "", fmt.Errorf("no latest version found for OS %q on %q track", runtime.GOOS, track)
-	}
-	return ver, nil
+	return latest.Version, nil
 }
 
 type trackPackages struct {

clientupdate/clientupdate_downloads.go

@@ -1,20 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build (linux && !android) || windows
-
-package clientupdate
-
-import (
-	"context"
-
-	"tailscale.com/clientupdate/distsign"
-)
-
-func (up *Updater) downloadURLToFile(pathSrc, fileDst string) (ret error) {
-	c, err := distsign.NewClient(up.Logf, up.PkgsAddr)
-	if err != nil {
-		return err
-	}
-	return c.Download(context.Background(), pathSrc, fileDst)
-}

clientupdate/clientupdate_not_downloads.go

@@ -1,10 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build !((linux && !android) || windows)
-
-package clientupdate
-
-func (up *Updater) downloadURLToFile(pathSrc, fileDst string) (ret error) {
-	panic("unreachable")
-}

clientupdate/clientupdate_notwindows.go

@@ -1,10 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build !windows
-
-package clientupdate
-
-func (up *Updater) updateWindows() error {
-	panic("unreachable")
-}

clientupdate/clientupdate_test.go

@@ -251,29 +251,6 @@ tailscale installed size:
 			out:     "",
 			wantErr: true,
 		},
-		{
-			desc: "multiple versions",
-			out: `
-tailscale-1.54.1-r0 description:
-The easiest, most secure way to use WireGuard and 2FA
-
-tailscale-1.54.1-r0 webpage:
-https://tailscale.com/
-
-tailscale-1.54.1-r0 installed size:
-34 MiB
-
-tailscale-1.58.2-r0 description:
-The easiest, most secure way to use WireGuard and 2FA
-
-tailscale-1.58.2-r0 webpage:
-https://tailscale.com/
-
-tailscale-1.58.2-r0 installed size:
-35 MiB
-`,
-			want: "1.58.2",
-		},
 	}
 
 	for _, tt := range tests {
@@ -663,7 +640,7 @@ func genTarball(t *testing.T, path string, files map[string]string) {
 
 func TestWriteFileOverwrite(t *testing.T) {
 	path := filepath.Join(t.TempDir(), "test")
-	for i := range 2 {
+	for i := 0; i < 2; i++ {
 		content := fmt.Sprintf("content %d", i)
 		if err := writeFile(strings.NewReader(content), path, 0600); err != nil {
 			t.Fatal(err)
@@ -846,107 +823,3 @@ func TestParseUnraidPluginVersion(t *testing.T) {
 		})
 	}
 }
-
-func TestConfirm(t *testing.T) {
-	curTrack := CurrentTrack
-	defer func() { CurrentTrack = curTrack }()
-
-	tests := []struct {
-		desc      string
-		fromTrack string
-		toTrack   string
-		fromVer   string
-		toVer     string
-		confirm   func(string) bool
-		want      bool
-	}{
-		{
-			desc:      "on latest stable",
-			fromTrack: StableTrack,
-			toTrack:   StableTrack,
-			fromVer:   "1.66.0",
-			toVer:     "1.66.0",
-			want:      false,
-		},
-		{
-			desc:      "stable upgrade",
-			fromTrack: StableTrack,
-			toTrack:   StableTrack,
-			fromVer:   "1.66.0",
-			toVer:     "1.68.0",
-			want:      true,
-		},
-		{
-			desc:      "unstable upgrade",
-			fromTrack: UnstableTrack,
-			toTrack:   UnstableTrack,
-			fromVer:   "1.67.1",
-			toVer:     "1.67.2",
-			want:      true,
-		},
-		{
-			desc:      "from stable to unstable",
-			fromTrack: StableTrack,
-			toTrack:   UnstableTrack,
-			fromVer:   "1.66.0",
-			toVer:     "1.67.1",
-			want:      true,
-		},
-		{
-			desc:      "from unstable to stable",
-			fromTrack: UnstableTrack,
-			toTrack:   StableTrack,
-			fromVer:   "1.67.1",
-			toVer:     "1.66.0",
-			want:      true,
-		},
-		{
-			desc:      "confirm callback rejects",
-			fromTrack: StableTrack,
-			toTrack:   StableTrack,
-			fromVer:   "1.66.0",
-			toVer:     "1.66.1",
-			confirm: func(string) bool {
-				return false
-			},
-			want: false,
-		},
-		{
-			desc:      "confirm callback allows",
-			fromTrack: StableTrack,
-			toTrack:   StableTrack,
-			fromVer:   "1.66.0",
-			toVer:     "1.66.1",
-			confirm: func(string) bool {
-				return true
-			},
-			want: true,
-		},
-		{
-			desc:      "downgrade",
-			fromTrack: StableTrack,
-			toTrack:   StableTrack,
-			fromVer:   "1.66.1",
-			toVer:     "1.66.0",
-			want:      false,
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.desc, func(t *testing.T) {
-			CurrentTrack = tt.fromTrack
-			up := Updater{
-				currentVersion: tt.fromVer,
-				Arguments: Arguments{
-					Track:   tt.toTrack,
-					Confirm: tt.confirm,
-					Logf:    t.Logf,
-				},
-			}
-
-			if got := up.confirm(tt.toVer); got != tt.want {
-				t.Errorf("got %v, want %v", got, tt.want)
-			}
-		})
-	}
-}

clientupdate/clientupdate_windows.go

@@ -7,57 +7,13 @@
 package clientupdate
 
 import (
-	"errors"
-	"fmt"
-	"io"
-	"os"
-	"os/exec"
-	"path"
-	"path/filepath"
-	"runtime"
-	"strings"
-
-	"github.com/google/uuid"
 	"golang.org/x/sys/windows"
-	"tailscale.com/util/winutil"
 	"tailscale.com/util/winutil/authenticode"
 )
 
-const (
-	// winMSIEnv is the environment variable that, if set, is the MSI file for
-	// the update command to install. It's passed like this so we can stop the
-	// tailscale.exe process from running before the msiexec process runs and
-	// tries to overwrite ourselves.
-	winMSIEnv = "TS_UPDATE_WIN_MSI"
-	// winExePathEnv is the environment variable that is set along with
-	// winMSIEnv and carries the full path of the calling tailscale.exe binary.
-	// It is used to re-launch the GUI process (tailscale-ipn.exe) after
-	// install is complete.
-	winExePathEnv = "TS_UPDATE_WIN_EXE_PATH"
-)
-
-func makeSelfCopy() (origPathExe, tmpPathExe string, err error) {
-	selfExe, err := os.Executable()
-	if err != nil {
-		return "", "", err
-	}
-	f, err := os.Open(selfExe)
-	if err != nil {
-		return "", "", err
-	}
-	defer f.Close()
-	f2, err := os.CreateTemp("", "tailscale-updater-*.exe")
-	if err != nil {
-		return "", "", err
-	}
-	if err := markTempFileWindows(f2.Name()); err != nil {
-		return "", "", err
-	}
-	if _, err := io.Copy(f2, f); err != nil {
-		f2.Close()
-		return "", "", err
-	}
-	return selfExe, f2.Name(), f2.Close()
+func init() {
+	markTempFileFunc = markTempFileWindows
+	verifyAuthenticode = verifyTailscale
 }
 
 func markTempFileWindows(name string) error {
@@ -67,159 +23,6 @@ func markTempFileWindows(name string) error {
 
 const certSubjectTailscale = "Tailscale Inc."
 
-func verifyAuthenticode(path string) error {
+func verifyTailscale(path string) error {
 	return authenticode.Verify(path, certSubjectTailscale)
 }
-
-func (up *Updater) updateWindows() error {
-	if msi := os.Getenv(winMSIEnv); msi != "" {
-		// stdout/stderr from this part of the install could be lost since the
-		// parent tailscaled is replaced. Create a temp log file to have some
-		// output to debug with in case update fails.
-		close, err := up.switchOutputToFile()
-		if err != nil {
-			up.Logf("failed to create log file for installation: %v; proceeding with existing outputs", err)
-		} else {
-			defer close.Close()
-		}
-
-		up.Logf("installing %v ...", msi)
-		if err := up.installMSI(msi); err != nil {
-			up.Logf("MSI install failed: %v", err)
-			return err
-		}
-
-		up.Logf("success.")
-		return nil
-	}
-
-	if !winutil.IsCurrentProcessElevated() {
-		return errors.New(`update must be run as Administrator
-
-you can run the command prompt as Administrator one of these ways:
-* right-click cmd.exe, select 'Run as administrator'
-* press Windows+x, then press a
-* press Windows+r, type in "cmd", then press Ctrl+Shift+Enter`)
-	}
-	ver, err := requestedTailscaleVersion(up.Version, up.Track)
-	if err != nil {
-		return err
-	}
-	arch := runtime.GOARCH
-	if arch == "386" {
-		arch = "x86"
-	}
-	if !up.confirm(ver) {
-		return nil
-	}
-
-	tsDir := filepath.Join(os.Getenv("ProgramData"), "Tailscale")
-	msiDir := filepath.Join(tsDir, "MSICache")
-	if fi, err := os.Stat(tsDir); err != nil {
-		return fmt.Errorf("expected %s to exist, got stat error: %w", tsDir, err)
-	} else if !fi.IsDir() {
-		return fmt.Errorf("expected %s to be a directory; got %v", tsDir, fi.Mode())
-	}
-	if err := os.MkdirAll(msiDir, 0700); err != nil {
-		return err
-	}
-	up.cleanupOldDownloads(filepath.Join(msiDir, "*.msi"))
-	pkgsPath := fmt.Sprintf("%s/tailscale-setup-%s-%s.msi", up.Track, ver, arch)
-	msiTarget := filepath.Join(msiDir, path.Base(pkgsPath))
-	if err := up.downloadURLToFile(pkgsPath, msiTarget); err != nil {
-		return err
-	}
-
-	up.Logf("verifying MSI authenticode...")
-	if err := verifyAuthenticode(msiTarget); err != nil {
-		return fmt.Errorf("authenticode verification of %s failed: %w", msiTarget, err)
-	}
-	up.Logf("authenticode verification succeeded")
-
-	up.Logf("making tailscale.exe copy to switch to...")
-	up.cleanupOldDownloads(filepath.Join(os.TempDir(), "tailscale-updater-*.exe"))
-	selfOrig, selfCopy, err := makeSelfCopy()
-	if err != nil {
-		return err
-	}
-	defer os.Remove(selfCopy)
-	up.Logf("running tailscale.exe copy for final install...")
-
-	cmd := exec.Command(selfCopy, "update")
-	cmd.Env = append(os.Environ(), winMSIEnv+"="+msiTarget, winExePathEnv+"="+selfOrig)
-	cmd.Stdout = up.Stderr
-	cmd.Stderr = up.Stderr
-	cmd.Stdin = os.Stdin
-	if err := cmd.Start(); err != nil {
-		return err
-	}
-	// Once it's started, exit ourselves, so the binary is free
-	// to be replaced.
-	os.Exit(0)
-	panic("unreachable")
-}
-
-func (up *Updater) installMSI(msi string) error {
-	var err error
-	for tries := 0; tries < 2; tries++ {
-		cmd := exec.Command("msiexec.exe", "/i", filepath.Base(msi), "/quiet", "/norestart", "/qn")
-		cmd.Dir = filepath.Dir(msi)
-		cmd.Stdout = up.Stdout
-		cmd.Stderr = up.Stderr
-		cmd.Stdin = os.Stdin
-		err = cmd.Run()
-		if err == nil {
-			break
-		}
-		up.Logf("Install attempt failed: %v", err)
-		uninstallVersion := up.currentVersion
-		if v := os.Getenv("TS_DEBUG_UNINSTALL_VERSION"); v != "" {
-			uninstallVersion = v
-		}
-		// Assume it's a downgrade, which msiexec won't permit. Uninstall our current version first.
-		up.Logf("Uninstalling current version %q for downgrade...", uninstallVersion)
-		cmd = exec.Command("msiexec.exe", "/x", msiUUIDForVersion(uninstallVersion), "/norestart", "/qn")
-		cmd.Stdout = up.Stdout
-		cmd.Stderr = up.Stderr
-		cmd.Stdin = os.Stdin
-		err = cmd.Run()
-		up.Logf("msiexec uninstall: %v", err)
-	}
-	return err
-}
-
-func msiUUIDForVersion(ver string) string {
-	arch := runtime.GOARCH
-	if arch == "386" {
-		arch = "x86"
-	}
-	track, err := versionToTrack(ver)
-	if err != nil {
-		track = UnstableTrack
-	}
-	msiURL := fmt.Sprintf("https://pkgs.tailscale.com/%s/tailscale-setup-%s-%s.msi", track, ver, arch)
-	return "{" + strings.ToUpper(uuid.NewSHA1(uuid.NameSpaceURL, []byte(msiURL)).String()) + "}"
-}
-
-func (up *Updater) switchOutputToFile() (io.Closer, error) {
-	var logFilePath string
-	exePath, err := os.Executable()
-	if err != nil {
-		logFilePath = filepath.Join(os.TempDir(), "tailscale-updater.log")
-	} else {
-		logFilePath = strings.TrimSuffix(exePath, ".exe") + ".log"
-	}
-
-	up.Logf("writing update output to %q", logFilePath)
-	logFile, err := os.Create(logFilePath)
-	if err != nil {
-		return nil, err
-	}
-
-	up.Logf = func(m string, args ...any) {
-		fmt.Fprintf(logFile, m+"\n", args...)
-	}
-	up.Stdout = logFile
-	up.Stderr = logFile
-	return logFile, nil
-}

clientupdate/distsign/distsign_test.go

@@ -445,7 +445,7 @@ type testServer struct {
 
 func newTestServer(t *testing.T) *testServer {
 	var roots []rootKeyPair
-	for range 3 {
+	for i := 0; i < 3; i++ {
 		roots = append(roots, newRootKeyPair(t))
 	}
 

clientupdate/systemd_linux.go

@@ -0,0 +1,37 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package clientupdate
+
+import (
+	"context"
+	"errors"
+	"fmt"
+
+	"github.com/coreos/go-systemd/v22/dbus"
+)
+
+func restartSystemdUnit(ctx context.Context) error {
+	c, err := dbus.NewWithContext(ctx)
+	if err != nil {
+		// Likely not a systemd-managed distro.
+		return errors.ErrUnsupported
+	}
+	defer c.Close()
+	if err := c.ReloadContext(ctx); err != nil {
+		return fmt.Errorf("failed to reload tailsacled.service: %w", err)
+	}
+	ch := make(chan string, 1)
+	if _, err := c.RestartUnitContext(ctx, "tailscaled.service", "replace", ch); err != nil {
+		return fmt.Errorf("failed to restart tailsacled.service: %w", err)
+	}
+	select {
+	case res := <-ch:
+		if res != "done" {
+			return fmt.Errorf("systemd service restart failed with result %q", res)
+		}
+	case <-ctx.Done():
+		return ctx.Err()
+	}
+	return nil
+}

clientupdate/systemd_other.go

@@ -0,0 +1,15 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build !linux
+
+package clientupdate
+
+import (
+	"context"
+	"errors"
+)
+
+func restartSystemdUnit(ctx context.Context) error {
+	return errors.ErrUnsupported
+}

cmd/addlicense/main.go

@@ -18,12 +18,12 @@ var (
 )
 
 func usage() {
-	fmt.Fprint(os.Stderr, `
+	fmt.Fprintf(os.Stderr, `
 usage: addlicense -file FILE <subcommand args...>
 `[1:])
 
 	flag.PrintDefaults()
-	fmt.Fprint(os.Stderr, `
+	fmt.Fprintf(os.Stderr, `
 addlicense adds a Tailscale license to the beginning of file.
 
 It is intended for use with 'go generate', so it also runs a subcommand,

cmd/checkmetrics/checkmetrics.go

@@ -1,131 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-// checkmetrics validates that all metrics in the tailscale client-metrics
-// are documented in a given path or URL.
-package main
-
-import (
-	"context"
-	"flag"
-	"fmt"
-	"io"
-	"log"
-	"net/http"
-	"net/http/httptest"
-	"os"
-	"strings"
-	"time"
-
-	"tailscale.com/ipn/store/mem"
-	"tailscale.com/tsnet"
-	"tailscale.com/tstest/integration/testcontrol"
-	"tailscale.com/util/httpm"
-)
-
-var (
-	kbPath = flag.String("kb-path", "", "filepath to the client-metrics knowledge base")
-	kbUrl  = flag.String("kb-url", "", "URL to the client-metrics knowledge base page")
-)
-
-func main() {
-	flag.Parse()
-	if *kbPath == "" && *kbUrl == "" {
-		log.Fatalf("either -kb-path or -kb-url must be set")
-	}
-
-	var control testcontrol.Server
-	ts := httptest.NewServer(&control)
-	defer ts.Close()
-
-	td, err := os.MkdirTemp("", "testcontrol")
-	if err != nil {
-		log.Fatal(err)
-	}
-	defer os.RemoveAll(td)
-
-	// tsnet is used not used as a Tailscale client, but as a way to
-	// boot up Tailscale, have all the metrics registered, and then
-	// verifiy that all the metrics are documented.
-	tsn := &tsnet.Server{
-		Dir:        td,
-		Store:      new(mem.Store),
-		UserLogf:   log.Printf,
-		Ephemeral:  true,
-		ControlURL: ts.URL,
-	}
-	if err := tsn.Start(); err != nil {
-		log.Fatal(err)
-	}
-	defer tsn.Close()
-
-	log.Printf("checking that all metrics are documented, looking for: %s", tsn.Sys().UserMetricsRegistry().MetricNames())
-
-	if *kbPath != "" {
-		kb, err := readKB(*kbPath)
-		if err != nil {
-			log.Fatalf("reading kb: %v", err)
-		}
-		missing := undocumentedMetrics(kb, tsn.Sys().UserMetricsRegistry().MetricNames())
-
-		if len(missing) > 0 {
-			log.Fatalf("found undocumented metrics in %q: %v", *kbPath, missing)
-		}
-	}
-
-	if *kbUrl != "" {
-		ctx, cancel := context.WithTimeout(context.Background(), 30*time.Second)
-		defer cancel()
-
-		kb, err := getKB(ctx, *kbUrl)
-		if err != nil {
-			log.Fatalf("getting kb: %v", err)
-		}
-		missing := undocumentedMetrics(kb, tsn.Sys().UserMetricsRegistry().MetricNames())
-
-		if len(missing) > 0 {
-			log.Fatalf("found undocumented metrics in %q: %v", *kbUrl, missing)
-		}
-	}
-}
-
-func readKB(path string) (string, error) {
-	b, err := os.ReadFile(path)
-	if err != nil {
-		return "", fmt.Errorf("reading file: %w", err)
-	}
-
-	return string(b), nil
-}
-
-func getKB(ctx context.Context, url string) (string, error) {
-	req, err := http.NewRequestWithContext(ctx, httpm.GET, url, nil)
-	if err != nil {
-		return "", fmt.Errorf("creating request: %w", err)
-	}
-
-	resp, err := http.DefaultClient.Do(req)
-	if err != nil {
-		return "", fmt.Errorf("getting kb page: %w", err)
-	}
-
-	if resp.StatusCode != http.StatusOK {
-		return "", fmt.Errorf("unexpected status code: %d", resp.StatusCode)
-	}
-
-	b, err := io.ReadAll(resp.Body)
-	if err != nil {
-		return "", fmt.Errorf("reading body: %w", err)
-	}
-	return string(b), nil
-}
-
-func undocumentedMetrics(b string, metrics []string) []string {
-	var missing []string
-	for _, metric := range metrics {
-		if !strings.Contains(b, metric) {
-			missing = append(missing, metric)
-		}
-	}
-	return missing
-}

cmd/cloner/cloner.go

@@ -47,7 +47,7 @@ func main() {
 	it := codegen.NewImportTracker(pkg.Types)
 	buf := new(bytes.Buffer)
 	for _, typeName := range typeNames {
-		typ, ok := namedTypes[typeName].(*types.Named)
+		typ, ok := namedTypes[typeName]
 		if !ok {
 			log.Fatalf("could not find type %s", typeName)
 		}
@@ -78,11 +78,7 @@ func main() {
 		w("	return false")
 		w("}")
 	}
-	cloneOutput := pkg.Name + "_clone"
-	if *flagBuildTags == "test" {
-		cloneOutput += "_test"
-	}
-	cloneOutput += ".go"
+	cloneOutput := pkg.Name + "_clone.go"
 	if err := codegen.WritePackageFile("tailscale.com/cmd/cloner", pkg, cloneOutput, it, buf); err != nil {
 		log.Fatal(err)
 	}
@@ -95,27 +91,24 @@ func gen(buf *bytes.Buffer, it *codegen.ImportTracker, typ *types.Named) {
 	}
 
 	name := typ.Obj().Name()
-	typeParams := typ.Origin().TypeParams()
-	_, typeParamNames := codegen.FormatTypeParams(typeParams, it)
-	nameWithParams := name + typeParamNames
 	fmt.Fprintf(buf, "// Clone makes a deep copy of %s.\n", name)
 	fmt.Fprintf(buf, "// The result aliases no memory with the original.\n")
-	fmt.Fprintf(buf, "func (src *%s) Clone() *%s {\n", nameWithParams, nameWithParams)
+	fmt.Fprintf(buf, "func (src *%s) Clone() *%s {\n", name, name)
 	writef := func(format string, args ...any) {
 		fmt.Fprintf(buf, "\t"+format+"\n", args...)
 	}
 	writef("if src == nil {")
 	writef("\treturn nil")
 	writef("}")
-	writef("dst := new(%s)", nameWithParams)
+	writef("dst := new(%s)", name)
 	writef("*dst = *src")
-	for i := range t.NumFields() {
+	for i := 0; i < t.NumFields(); i++ {
 		fname := t.Field(i).Name()
 		ft := t.Field(i).Type()
 		if !codegen.ContainsPointers(ft) || codegen.HasNoClone(t.Tag(i)) {
 			continue
 		}
-		if named, _ := codegen.NamedTypeOf(ft); named != nil {
+		if named, _ := ft.(*types.Named); named != nil {
 			if codegen.IsViewType(ft) {
 				writef("dst.%s = src.%s", fname, fname)
 				continue
@@ -133,23 +126,16 @@ func gen(buf *bytes.Buffer, it *codegen.ImportTracker, typ *types.Named) {
 				writef("dst.%s = make([]%s, len(src.%s))", fname, n, fname)
 				writef("for i := range dst.%s {", fname)
 				if ptr, isPtr := ft.Elem().(*types.Pointer); isPtr {
-					writef("if src.%s[i] == nil { dst.%s[i] = nil } else {", fname, fname)
-					if codegen.ContainsPointers(ptr.Elem()) {
-						if _, isIface := ptr.Elem().Underlying().(*types.Interface); isIface {
-							it.Import("tailscale.com/types/ptr")
-							writef("\tdst.%s[i] = ptr.To((*src.%s[i]).Clone())", fname, fname)
-						} else {
-							writef("\tdst.%s[i] = src.%s[i].Clone()", fname, fname)
-						}
-					} else {
+					if _, isBasic := ptr.Elem().Underlying().(*types.Basic); isBasic {
 						it.Import("tailscale.com/types/ptr")
+						writef("if src.%s[i] == nil { dst.%s[i] = nil } else {", fname, fname)
 						writef("\tdst.%s[i] = ptr.To(*src.%s[i])", fname, fname)
+						writef("}")
+					} else {
+						writef("\tdst.%s[i] = src.%s[i].Clone()", fname, fname)
 					}
-					writef("}")
 				} else if ft.Elem().String() == "encoding/json.RawMessage" {
 					writef("\tdst.%s[i] = append(src.%s[i][:0:0], src.%s[i]...)", fname, fname, fname)
-				} else if _, isIface := ft.Elem().Underlying().(*types.Interface); isIface {
-					writef("\tdst.%s[i] = src.%s[i].Clone()", fname, fname)
 				} else {
 					writef("\tdst.%s[i] = *src.%s[i].Clone()", fname, fname)
 				}
@@ -159,19 +145,14 @@ func gen(buf *bytes.Buffer, it *codegen.ImportTracker, typ *types.Named) {
 				writef("dst.%s = append(src.%s[:0:0], src.%s...)", fname, fname, fname)
 			}
 		case *types.Pointer:
-			base := ft.Elem()
-			hasPtrs := codegen.ContainsPointers(base)
-			if named, _ := codegen.NamedTypeOf(base); named != nil && hasPtrs {
+			if named, _ := ft.Elem().(*types.Named); named != nil && codegen.ContainsPointers(ft.Elem()) {
 				writef("dst.%s = src.%s.Clone()", fname, fname)
 				continue
 			}
 			it.Import("tailscale.com/types/ptr")
 			writef("if dst.%s != nil {", fname)
-			if _, isIface := base.Underlying().(*types.Interface); isIface && hasPtrs {
-				writef("\tdst.%s = ptr.To((*src.%s).Clone())", fname, fname)
-			} else if !hasPtrs {
-				writef("\tdst.%s = ptr.To(*src.%s)", fname, fname)
-			} else {
+			writef("\tdst.%s = ptr.To(*src.%s)", fname, fname)
+			if codegen.ContainsPointers(ft.Elem()) {
 				writef("\t" + `panic("TODO pointers in pointers")`)
 			}
 			writef("}")
@@ -191,50 +172,18 @@ func gen(buf *bytes.Buffer, it *codegen.ImportTracker, typ *types.Named) {
 				writef("if dst.%s != nil {", fname)
 				writef("\tdst.%s = map[%s]%s{}", fname, it.QualifiedName(ft.Key()), it.QualifiedName(elem))
 				writef("\tfor k, v := range src.%s {", fname)
-
-				switch elem := elem.Underlying().(type) {
+				switch elem.(type) {
 				case *types.Pointer:
-					writef("\t\tif v == nil { dst.%s[k] = nil } else {", fname)
-					if base := elem.Elem().Underlying(); codegen.ContainsPointers(base) {
-						if _, isIface := base.(*types.Interface); isIface {
-							it.Import("tailscale.com/types/ptr")
-							writef("\t\t\tdst.%s[k] = ptr.To((*v).Clone())", fname)
-						} else {
-							writef("\t\t\tdst.%s[k] = v.Clone()", fname)
-						}
-					} else {
-						it.Import("tailscale.com/types/ptr")
-						writef("\t\t\tdst.%s[k] = ptr.To(*v)", fname)
-					}
-					writef("}")
-				case *types.Interface:
-					if cloneResultType := methodResultType(elem, "Clone"); cloneResultType != nil {
-						if _, isPtr := cloneResultType.(*types.Pointer); isPtr {
-							writef("\t\tdst.%s[k] = *(v.Clone())", fname)
-						} else {
-							writef("\t\tdst.%s[k] = v.Clone()", fname)
-						}
-					} else {
-						writef(`panic("%s (%v) does not have a Clone method")`, fname, elem)
-					}
+					writef("\t\tdst.%s[k] = v.Clone()", fname)
 				default:
 					writef("\t\tdst.%s[k] = *(v.Clone())", fname)
 				}
-
 				writef("\t}")
 				writef("}")
 			} else {
 				it.Import("maps")
 				writef("\tdst.%s = maps.Clone(src.%s)", fname, fname)
 			}
-		case *types.Interface:
-			// If ft is an interface with a "Clone() ft" method, it can be used to clone the field.
-			// This includes scenarios where ft is a constrained type parameter.
-			if cloneResultType := methodResultType(ft, "Clone"); cloneResultType.Underlying() == ft {
-				writef("dst.%s = src.%s.Clone()", fname, fname)
-				continue
-			}
-			writef(`panic("%s (%v) does not have a compatible Clone method")`, fname, ft)
 		default:
 			writef(`panic("TODO: %s (%T)")`, fname, ft)
 		}
@@ -242,7 +191,7 @@ func gen(buf *bytes.Buffer, it *codegen.ImportTracker, typ *types.Named) {
 	writef("return dst")
 	fmt.Fprintf(buf, "}\n\n")
 
-	buf.Write(codegen.AssertStructUnchanged(t, name, typeParams, "Clone", it))
+	buf.Write(codegen.AssertStructUnchanged(t, name, "Clone", it))
 }
 
 // hasBasicUnderlying reports true when typ.Underlying() is a slice or a map.
@@ -254,15 +203,3 @@ func hasBasicUnderlying(typ types.Type) bool {
 		return false
 	}
 }
-
-func methodResultType(typ types.Type, method string) types.Type {
-	viewMethod := codegen.LookupMethod(typ, method)
-	if viewMethod == nil {
-		return nil
-	}
-	sig, ok := viewMethod.Type().(*types.Signature)
-	if !ok || sig.Results().Len() != 1 {
-		return nil
-	}
-	return sig.Results().At(0).Type()
-}

cmd/cloner/clonerex/clonerex.go

@@ -3,7 +3,6 @@
 
 //go:generate go run tailscale.com/cmd/cloner  -clonefunc=true -type SliceContainer
 
-// Package clonerex is an example package for the cloner tool.
 package clonerex
 
 type SliceContainer struct {

cmd/containerboot/certs.go

@@ -1,156 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build linux
-
-package main
-
-import (
-	"context"
-	"fmt"
-	"log"
-	"net"
-	"sync"
-	"time"
-
-	"tailscale.com/ipn"
-	"tailscale.com/util/goroutines"
-	"tailscale.com/util/mak"
-)
-
-// certManager is responsible for issuing certificates for known domains and for
-// maintaining a loop that re-attempts issuance daily.
-// Currently cert manager logic is only run on ingress ProxyGroup replicas that are responsible for managing certs for
-// HA Ingress HTTPS endpoints ('write' replicas).
-type certManager struct {
-	lc      localClient
-	tracker goroutines.Tracker // tracks running goroutines
-	mu      sync.Mutex         // guards the following
-	// certLoops contains a map of DNS names, for which we currently need to
-	// manage certs to cancel functions that allow stopping a goroutine when
-	// we no longer need to manage certs for the DNS name.
-	certLoops map[string]context.CancelFunc
-}
-
-// ensureCertLoops ensures that, for all currently managed Service HTTPS
-// endpoints, there is a cert loop responsible for issuing and ensuring the
-// renewal of the TLS certs.
-// ServeConfig must not be nil.
-func (cm *certManager) ensureCertLoops(ctx context.Context, sc *ipn.ServeConfig) error {
-	if sc == nil {
-		return fmt.Errorf("[unexpected] ensureCertLoops called with nil ServeConfig")
-	}
-	currentDomains := make(map[string]bool)
-	const httpsPort = "443"
-	for _, service := range sc.Services {
-		for hostPort := range service.Web {
-			domain, port, err := net.SplitHostPort(string(hostPort))
-			if err != nil {
-				return fmt.Errorf("[unexpected] unable to parse HostPort %s", hostPort)
-			}
-			if port != httpsPort { // HA Ingress' HTTP endpoint
-				continue
-			}
-			currentDomains[domain] = true
-		}
-	}
-	cm.mu.Lock()
-	defer cm.mu.Unlock()
-	for domain := range currentDomains {
-		if _, exists := cm.certLoops[domain]; !exists {
-			cancelCtx, cancel := context.WithCancel(ctx)
-			mak.Set(&cm.certLoops, domain, cancel)
-			// Note that most of the issuance anyway happens
-			// serially because the cert client has a shared lock
-			// that's held during any issuance.
-			cm.tracker.Go(func() { cm.runCertLoop(cancelCtx, domain) })
-		}
-	}
-
-	// Stop goroutines for domain names that are no longer in the config.
-	for domain, cancel := range cm.certLoops {
-		if !currentDomains[domain] {
-			cancel()
-			delete(cm.certLoops, domain)
-		}
-	}
-	return nil
-}
-
-// runCertLoop:
-// - calls localAPI certificate endpoint to ensure that certs are issued for the
-// given domain name
-// - calls localAPI certificate endpoint daily to ensure that certs are renewed
-// - if certificate issuance failed retries after an exponential backoff period
-// starting at 1 minute and capped at 24 hours. Reset the backoff once issuance succeeds.
-// Note that renewal check also happens when the node receives an HTTPS request and it is possible that certs get
-// renewed at that point. Renewal here is needed to prevent the shared certs from expiry in edge cases where the 'write'
-// replica does not get any HTTPS requests.
-// https://letsencrypt.org/docs/integration-guide/#retrying-failures
-func (cm *certManager) runCertLoop(ctx context.Context, domain string) {
-	const (
-		normalInterval   = 24 * time.Hour  // regular renewal check
-		initialRetry     = 1 * time.Minute // initial backoff after a failure
-		maxRetryInterval = 24 * time.Hour  // max backoff period
-	)
-	timer := time.NewTimer(0) // fire off timer immediately
-	defer timer.Stop()
-	retryCount := 0
-	for {
-		select {
-		case <-ctx.Done():
-			return
-		case <-timer.C:
-			// We call the certificate endpoint, but don't do anything
-			// with the returned certs here.
-			// The call to the certificate endpoint will ensure that
-			// certs are issued/renewed as needed and stored in the
-			// relevant state store. For example, for HA Ingress
-			// 'write' replica, the cert and key will be stored in a
-			// Kubernetes Secret named after the domain for which we
-			// are issuing.
-			// Note that renewals triggered by the call to the
-			// certificates endpoint here and by renewal check
-			// triggered during a call to node's HTTPS endpoint
-			// share the same state/renewal lock mechanism, so we
-			// should not run into redundant issuances during
-			// concurrent renewal checks.
-			// TODO(irbekrm): maybe it is worth adding a new
-			// issuance endpoint that explicitly only triggers
-			// issuance and stores certs in the relevant store, but
-			// does not return certs to the caller?
-
-			// An issuance holds a shared lock, so we need to avoid
-			// a situation where other services cannot issue certs
-			// because a single one is holding the lock.
-			ctxT, cancel := context.WithTimeout(ctx, time.Second*300)
-			defer cancel()
-			_, _, err := cm.lc.CertPair(ctxT, domain)
-			if err != nil {
-				log.Printf("error refreshing certificate for %s: %v", domain, err)
-			}
-			var nextInterval time.Duration
-			// TODO(irbekrm): distinguish between LE rate limit
-			// errors and other error types like transient network
-			// errors.
-			if err == nil {
-				retryCount = 0
-				nextInterval = normalInterval
-			} else {
-				retryCount++
-				// Calculate backoff: initialRetry * 2^(retryCount-1)
-				// For retryCount=1: 1min * 2^0 = 1min
-				// For retryCount=2: 1min * 2^1 = 2min
-				// For retryCount=3: 1min * 2^2 = 4min
-				backoff := initialRetry * time.Duration(1<<(retryCount-1))
-				if backoff > maxRetryInterval {
-					backoff = maxRetryInterval
-				}
-				nextInterval = backoff
-				log.Printf("Error refreshing certificate for %s (retry %d): %v. Will retry in %v\n",
-					domain, retryCount, err, nextInterval)
-			}
-			timer.Reset(nextInterval)
-		}
-	}
-}

cmd/containerboot/certs_test.go

@@ -1,229 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build linux
-
-package main
-
-import (
-	"context"
-	"testing"
-	"time"
-
-	"tailscale.com/ipn"
-	"tailscale.com/tailcfg"
-)
-
-// TestEnsureCertLoops tests that the certManager correctly starts and stops
-// update loops for certs when the serve config changes. It tracks goroutine
-// count and uses that as a validator that the expected number of cert loops are
-// running.
-func TestEnsureCertLoops(t *testing.T) {
-	tests := []struct {
-		name              string
-		initialConfig     *ipn.ServeConfig
-		updatedConfig     *ipn.ServeConfig
-		initialGoroutines int64 // after initial serve config is applied
-		updatedGoroutines int64 // after updated serve config is applied
-		wantErr           bool
-	}{
-		{
-			name:              "empty_serve_config",
-			initialConfig:     &ipn.ServeConfig{},
-			initialGoroutines: 0,
-		},
-		{
-			name:              "nil_serve_config",
-			initialConfig:     nil,
-			initialGoroutines: 0,
-			wantErr:           true,
-		},
-		{
-			name:          "empty_to_one_service",
-			initialConfig: &ipn.ServeConfig{},
-			updatedConfig: &ipn.ServeConfig{
-				Services: map[tailcfg.ServiceName]*ipn.ServiceConfig{
-					"svc:my-app": {
-						Web: map[ipn.HostPort]*ipn.WebServerConfig{
-							"my-app.tailnetxyz.ts.net:443": {},
-						},
-					},
-				},
-			},
-			initialGoroutines: 0,
-			updatedGoroutines: 1,
-		},
-		{
-			name: "single_service",
-			initialConfig: &ipn.ServeConfig{
-				Services: map[tailcfg.ServiceName]*ipn.ServiceConfig{
-					"svc:my-app": {
-						Web: map[ipn.HostPort]*ipn.WebServerConfig{
-							"my-app.tailnetxyz.ts.net:443": {},
-						},
-					},
-				},
-			},
-			initialGoroutines: 1,
-		},
-		{
-			name: "multiple_services",
-			initialConfig: &ipn.ServeConfig{
-				Services: map[tailcfg.ServiceName]*ipn.ServiceConfig{
-					"svc:my-app": {
-						Web: map[ipn.HostPort]*ipn.WebServerConfig{
-							"my-app.tailnetxyz.ts.net:443": {},
-						},
-					},
-					"svc:my-other-app": {
-						Web: map[ipn.HostPort]*ipn.WebServerConfig{
-							"my-other-app.tailnetxyz.ts.net:443": {},
-						},
-					},
-				},
-			},
-			initialGoroutines: 2, // one loop per domain across all services
-		},
-		{
-			name: "ignore_non_https_ports",
-			initialConfig: &ipn.ServeConfig{
-				Services: map[tailcfg.ServiceName]*ipn.ServiceConfig{
-					"svc:my-app": {
-						Web: map[ipn.HostPort]*ipn.WebServerConfig{
-							"my-app.tailnetxyz.ts.net:443": {},
-							"my-app.tailnetxyz.ts.net:80":  {},
-						},
-					},
-				},
-			},
-			initialGoroutines: 1, // only one loop for the 443 endpoint
-		},
-		{
-			name: "remove_domain",
-			initialConfig: &ipn.ServeConfig{
-				Services: map[tailcfg.ServiceName]*ipn.ServiceConfig{
-					"svc:my-app": {
-						Web: map[ipn.HostPort]*ipn.WebServerConfig{
-							"my-app.tailnetxyz.ts.net:443": {},
-						},
-					},
-					"svc:my-other-app": {
-						Web: map[ipn.HostPort]*ipn.WebServerConfig{
-							"my-other-app.tailnetxyz.ts.net:443": {},
-						},
-					},
-				},
-			},
-			updatedConfig: &ipn.ServeConfig{
-				Services: map[tailcfg.ServiceName]*ipn.ServiceConfig{
-					"svc:my-app": {
-						Web: map[ipn.HostPort]*ipn.WebServerConfig{
-							"my-app.tailnetxyz.ts.net:443": {},
-						},
-					},
-				},
-			},
-			initialGoroutines: 2, // initially two loops (one per service)
-			updatedGoroutines: 1, // one loop after removing service2
-		},
-		{
-			name: "add_domain",
-			initialConfig: &ipn.ServeConfig{
-				Services: map[tailcfg.ServiceName]*ipn.ServiceConfig{
-					"svc:my-app": {
-						Web: map[ipn.HostPort]*ipn.WebServerConfig{
-							"my-app.tailnetxyz.ts.net:443": {},
-						},
-					},
-				},
-			},
-			updatedConfig: &ipn.ServeConfig{
-				Services: map[tailcfg.ServiceName]*ipn.ServiceConfig{
-					"svc:my-app": {
-						Web: map[ipn.HostPort]*ipn.WebServerConfig{
-							"my-app.tailnetxyz.ts.net:443": {},
-						},
-					},
-					"svc:my-other-app": {
-						Web: map[ipn.HostPort]*ipn.WebServerConfig{
-							"my-other-app.tailnetxyz.ts.net:443": {},
-						},
-					},
-				},
-			},
-			initialGoroutines: 1,
-			updatedGoroutines: 2,
-		},
-	}
-
-	for _, tt := range tests {
-		t.Run(tt.name, func(t *testing.T) {
-			ctx, cancel := context.WithCancel(context.Background())
-			defer cancel()
-
-			cm := &certManager{
-				lc:        &fakeLocalClient{},
-				certLoops: make(map[string]context.CancelFunc),
-			}
-
-			allDone := make(chan bool, 1)
-			defer cm.tracker.AddDoneCallback(func() {
-				cm.mu.Lock()
-				defer cm.mu.Unlock()
-				if cm.tracker.RunningGoroutines() > 0 {
-					return
-				}
-				select {
-				case allDone <- true:
-				default:
-				}
-			})()
-
-			err := cm.ensureCertLoops(ctx, tt.initialConfig)
-			if (err != nil) != tt.wantErr {
-				t.Fatalf("ensureCertLoops() error = %v", err)
-			}
-
-			if got := cm.tracker.RunningGoroutines(); got != tt.initialGoroutines {
-				t.Errorf("after initial config: got %d running goroutines, want %d", got, tt.initialGoroutines)
-			}
-
-			if tt.updatedConfig != nil {
-				if err := cm.ensureCertLoops(ctx, tt.updatedConfig); err != nil {
-					t.Fatalf("ensureCertLoops() error on update = %v", err)
-				}
-
-				// Although starting goroutines and cancelling
-				// the context happens in the main goroutine, it
-				// the actual goroutine exit when a context is
-				// cancelled does not- so wait for a bit for the
-				// running goroutine count to reach the expected
-				// number.
-				deadline := time.After(5 * time.Second)
-				for {
-					if got := cm.tracker.RunningGoroutines(); got == tt.updatedGoroutines {
-						break
-					}
-					select {
-					case <-deadline:
-						t.Fatalf("timed out waiting for goroutine count to reach %d, currently at %d",
-							tt.updatedGoroutines, cm.tracker.RunningGoroutines())
-					case <-time.After(10 * time.Millisecond):
-						continue
-					}
-				}
-			}
-
-			if tt.updatedGoroutines == 0 {
-				return // no goroutines to wait for
-			}
-			// cancel context to make goroutines exit
-			cancel()
-			select {
-			case <-time.After(5 * time.Second):
-				t.Fatal("timed out waiting for goroutine to finish")
-			case <-allDone:
-			}
-		})
-	}
-}

cmd/containerboot/forwarding.go

@@ -1,262 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build linux
-
-package main
-
-import (
-	"context"
-	"fmt"
-	"log"
-	"net"
-	"net/netip"
-	"os"
-	"path/filepath"
-	"strings"
-
-	"tailscale.com/util/linuxfw"
-)
-
-// ensureIPForwarding enables IPv4/IPv6 forwarding for the container.
-func ensureIPForwarding(root, clusterProxyTargetIP, tailnetTargetIP, tailnetTargetFQDN string, routes *string) error {
-	var (
-		v4Forwarding, v6Forwarding bool
-	)
-	if clusterProxyTargetIP != "" {
-		proxyIP, err := netip.ParseAddr(clusterProxyTargetIP)
-		if err != nil {
-			return fmt.Errorf("invalid cluster destination IP: %v", err)
-		}
-		if proxyIP.Is4() {
-			v4Forwarding = true
-		} else {
-			v6Forwarding = true
-		}
-	}
-	if tailnetTargetIP != "" {
-		proxyIP, err := netip.ParseAddr(tailnetTargetIP)
-		if err != nil {
-			return fmt.Errorf("invalid tailnet destination IP: %v", err)
-		}
-		if proxyIP.Is4() {
-			v4Forwarding = true
-		} else {
-			v6Forwarding = true
-		}
-	}
-	// Currently we only proxy traffic to the IPv4 address of the tailnet
-	// target.
-	if tailnetTargetFQDN != "" {
-		v4Forwarding = true
-	}
-	if routes != nil && *routes != "" {
-		for _, route := range strings.Split(*routes, ",") {
-			cidr, err := netip.ParsePrefix(route)
-			if err != nil {
-				return fmt.Errorf("invalid subnet route: %v", err)
-			}
-			if cidr.Addr().Is4() {
-				v4Forwarding = true
-			} else {
-				v6Forwarding = true
-			}
-		}
-	}
-	return enableIPForwarding(v4Forwarding, v6Forwarding, root)
-}
-
-func enableIPForwarding(v4Forwarding, v6Forwarding bool, root string) error {
-	var paths []string
-	if v4Forwarding {
-		paths = append(paths, filepath.Join(root, "proc/sys/net/ipv4/ip_forward"))
-	}
-	if v6Forwarding {
-		paths = append(paths, filepath.Join(root, "proc/sys/net/ipv6/conf/all/forwarding"))
-	}
-
-	// In some common configurations (e.g. default docker,
-	// kubernetes), the container environment denies write access to
-	// most sysctls, including IP forwarding controls. Check the
-	// sysctl values before trying to change them, so that we
-	// gracefully do nothing if the container's already been set up
-	// properly by e.g. a k8s initContainer.
-	for _, path := range paths {
-		bs, err := os.ReadFile(path)
-		if err != nil {
-			return fmt.Errorf("reading %q: %w", path, err)
-		}
-		if v := strings.TrimSpace(string(bs)); v != "1" {
-			if err := os.WriteFile(path, []byte("1"), 0644); err != nil {
-				return fmt.Errorf("enabling %q: %w", path, err)
-			}
-		}
-	}
-	return nil
-}
-
-func installEgressForwardingRule(_ context.Context, dstStr string, tsIPs []netip.Prefix, nfr linuxfw.NetfilterRunner) error {
-	dst, err := netip.ParseAddr(dstStr)
-	if err != nil {
-		return err
-	}
-	var local netip.Addr
-	for _, pfx := range tsIPs {
-		if !pfx.IsSingleIP() {
-			continue
-		}
-		if pfx.Addr().Is4() != dst.Is4() {
-			continue
-		}
-		local = pfx.Addr()
-		break
-	}
-	if !local.IsValid() {
-		return fmt.Errorf("no tailscale IP matching family of %s found in %v", dstStr, tsIPs)
-	}
-	if err := nfr.DNATNonTailscaleTraffic("tailscale0", dst); err != nil {
-		return fmt.Errorf("installing egress proxy rules: %w", err)
-	}
-	if err := nfr.EnsureSNATForDst(local, dst); err != nil {
-		return fmt.Errorf("installing egress proxy rules: %w", err)
-	}
-	if err := nfr.ClampMSSToPMTU("tailscale0", dst); err != nil {
-		return fmt.Errorf("installing egress proxy rules: %w", err)
-	}
-	return nil
-}
-
-// installTSForwardingRuleForDestination accepts a destination address and a
-// list of node's tailnet addresses, sets up rules to forward traffic for
-// destination to the tailnet IP matching the destination IP family.
-// Destination can be Pod IP of this node.
-func installTSForwardingRuleForDestination(_ context.Context, dstFilter string, tsIPs []netip.Prefix, nfr linuxfw.NetfilterRunner) error {
-	dst, err := netip.ParseAddr(dstFilter)
-	if err != nil {
-		return err
-	}
-	var local netip.Addr
-	for _, pfx := range tsIPs {
-		if !pfx.IsSingleIP() {
-			continue
-		}
-		if pfx.Addr().Is4() != dst.Is4() {
-			continue
-		}
-		local = pfx.Addr()
-		break
-	}
-	if !local.IsValid() {
-		return fmt.Errorf("no tailscale IP matching family of %s found in %v", dstFilter, tsIPs)
-	}
-	if err := nfr.AddDNATRule(dst, local); err != nil {
-		return fmt.Errorf("installing rule for forwarding traffic to tailnet IP: %w", err)
-	}
-	return nil
-}
-
-func installIngressForwardingRule(_ context.Context, dstStr string, tsIPs []netip.Prefix, nfr linuxfw.NetfilterRunner) error {
-	dst, err := netip.ParseAddr(dstStr)
-	if err != nil {
-		return err
-	}
-	var local netip.Addr
-	proxyHasIPv4Address := false
-	for _, pfx := range tsIPs {
-		if !pfx.IsSingleIP() {
-			continue
-		}
-		if pfx.Addr().Is4() {
-			proxyHasIPv4Address = true
-		}
-		if pfx.Addr().Is4() != dst.Is4() {
-			continue
-		}
-		local = pfx.Addr()
-		break
-	}
-	if proxyHasIPv4Address && dst.Is6() {
-		log.Printf("Warning: proxy backend ClusterIP is an IPv6 address and the proxy has a IPv4 tailnet address. You might need to disable IPv4 address allocation for the proxy for forwarding to work. See https://github.com/tailscale/tailscale/issues/12156")
-	}
-	if !local.IsValid() {
-		return fmt.Errorf("no tailscale IP matching family of %s found in %v", dstStr, tsIPs)
-	}
-	if err := nfr.AddDNATRule(local, dst); err != nil {
-		return fmt.Errorf("installing ingress proxy rules: %w", err)
-	}
-	if err := nfr.ClampMSSToPMTU("tailscale0", dst); err != nil {
-		return fmt.Errorf("installing ingress proxy rules: %w", err)
-	}
-	return nil
-}
-
-func installIngressForwardingRuleForDNSTarget(_ context.Context, backendAddrs []net.IP, tsIPs []netip.Prefix, nfr linuxfw.NetfilterRunner) error {
-	var (
-		tsv4       netip.Addr
-		tsv6       netip.Addr
-		v4Backends []netip.Addr
-		v6Backends []netip.Addr
-	)
-	for _, pfx := range tsIPs {
-		if pfx.IsSingleIP() && pfx.Addr().Is4() {
-			tsv4 = pfx.Addr()
-			continue
-		}
-		if pfx.IsSingleIP() && pfx.Addr().Is6() {
-			tsv6 = pfx.Addr()
-			continue
-		}
-	}
-	// TODO: log if more than one backend address is found and firewall is
-	// in nftables mode that only the first IP will be used.
-	for _, ip := range backendAddrs {
-		if ip.To4() != nil {
-			v4Backends = append(v4Backends, netip.AddrFrom4([4]byte(ip.To4())))
-		}
-		if ip.To16() != nil {
-			v6Backends = append(v6Backends, netip.AddrFrom16([16]byte(ip.To16())))
-		}
-	}
-
-	// Enable IP forwarding here as opposed to at the start of containerboot
-	// as the IPv4/IPv6 requirements might have changed.
-	// For Kubernetes operator proxies, forwarding for both IPv4 and IPv6 is
-	// enabled by an init container, so in practice enabling forwarding here
-	// is only needed if this proxy has been configured by manually setting
-	// TS_EXPERIMENTAL_DEST_DNS_NAME env var for a containerboot instance.
-	if err := enableIPForwarding(len(v4Backends) != 0, len(v6Backends) != 0, ""); err != nil {
-		log.Printf("[unexpected] failed to ensure IP forwarding: %v", err)
-	}
-
-	updateFirewall := func(dst netip.Addr, backendTargets []netip.Addr) error {
-		if err := nfr.DNATWithLoadBalancer(dst, backendTargets); err != nil {
-			return fmt.Errorf("installing DNAT rules for ingress backends %+#v: %w", backendTargets, err)
-		}
-		// The backend might advertize MSS higher than that of the
-		// tailscale interfaces. Clamp MSS of packets going out via
-		// tailscale0 interface to its MTU to prevent broken connections
-		// in environments where path MTU discovery is not working.
-		if err := nfr.ClampMSSToPMTU("tailscale0", dst); err != nil {
-			return fmt.Errorf("adding rule to clamp traffic via tailscale0: %v", err)
-		}
-		return nil
-	}
-
-	if len(v4Backends) != 0 {
-		if !tsv4.IsValid() {
-			log.Printf("backend targets %v contain at least one IPv4 address, but this node's Tailscale IPs do not contain a valid IPv4 address: %v", backendAddrs, tsIPs)
-		} else if err := updateFirewall(tsv4, v4Backends); err != nil {
-			return fmt.Errorf("Installing IPv4 firewall rules: %w", err)
-		}
-	}
-	if len(v6Backends) != 0 && !tsv6.IsValid() {
-		if !tsv6.IsValid() {
-			log.Printf("backend targets %v contain at least one IPv6 address, but this node's Tailscale IPs do not contain a valid IPv6 address: %v", backendAddrs, tsIPs)
-		} else if !nfr.HasIPV6NAT() {
-			log.Printf("backend targets %v contain at least one IPv6 address, but the chosen firewall mode does not support IPv6 NAT", backendAddrs)
-		} else if err := updateFirewall(tsv6, v6Backends); err != nil {
-			return fmt.Errorf("Installing IPv6 firewall rules: %w", err)
-		}
-	}
-	return nil
-}

cmd/containerboot/healthz.go

@@ -1,57 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build linux
-
-package main
-
-import (
-	"fmt"
-	"log"
-	"net/http"
-	"sync"
-
-	"tailscale.com/kube/kubetypes"
-)
-
-// healthz is a simple health check server, if enabled it returns 200 OK if
-// this tailscale node currently has at least one tailnet IP address else
-// returns 503.
-type healthz struct {
-	sync.Mutex
-	hasAddrs bool
-	podIPv4  string
-}
-
-func (h *healthz) ServeHTTP(w http.ResponseWriter, r *http.Request) {
-	h.Lock()
-	defer h.Unlock()
-
-	if h.hasAddrs {
-		w.Header().Add(kubetypes.PodIPv4Header, h.podIPv4)
-		if _, err := w.Write([]byte("ok")); err != nil {
-			http.Error(w, fmt.Sprintf("error writing status: %v", err), http.StatusInternalServerError)
-		}
-	} else {
-		http.Error(w, "node currently has no tailscale IPs", http.StatusServiceUnavailable)
-	}
-}
-
-func (h *healthz) update(healthy bool) {
-	h.Lock()
-	defer h.Unlock()
-
-	if h.hasAddrs != healthy {
-		log.Println("Setting healthy", healthy)
-	}
-	h.hasAddrs = healthy
-}
-
-// healthHandlers registers a simple health handler at /healthz.
-// A containerized tailscale instance is considered healthy if
-// it has at least one tailnet IP address.
-func healthHandlers(mux *http.ServeMux, podIPv4 string) *healthz {
-	h := &healthz{podIPv4: podIPv4}
-	mux.Handle("GET /healthz", h)
-	return h
-}

cmd/containerboot/kube.go

@@ -8,64 +8,46 @@ package main
 import (
 	"context"
 	"encoding/json"
-	"errors"
 	"fmt"
 	"log"
 	"net/http"
 	"net/netip"
 	"os"
-	"strings"
-	"time"
 
-	"tailscale.com/ipn"
-	"tailscale.com/kube/kubeapi"
-	"tailscale.com/kube/kubeclient"
-	"tailscale.com/kube/kubetypes"
-	"tailscale.com/logtail/backoff"
+	"tailscale.com/kube"
 	"tailscale.com/tailcfg"
-	"tailscale.com/types/logger"
 )
 
-// kubeClient is a wrapper around Tailscale's internal kube client that knows how to talk to the kube API server. We use
-// this rather than any of the upstream Kubernetes client libaries to avoid extra imports.
-type kubeClient struct {
-	kubeclient.Client
-	stateSecret string
-	canPatch    bool // whether the client has permissions to patch Kubernetes Secrets
-}
-
-func newKubeClient(root string, stateSecret string) (*kubeClient, error) {
-	if root != "/" {
-		// If we are running in a test, we need to set the root path to the fake
-		// service account directory.
-		kubeclient.SetRootPathForTesting(root)
-	}
-	var err error
-	kc, err := kubeclient.New("tailscale-container")
+// findKeyInKubeSecret inspects the kube secret secretName for a data
+// field called "authkey", and returns its value if present.
+func findKeyInKubeSecret(ctx context.Context, secretName string) (string, error) {
+	s, err := kc.GetSecret(ctx, secretName)
 	if err != nil {
-		return nil, fmt.Errorf("Error creating kube client: %w", err)
+		return "", err
 	}
-	if (root != "/") || os.Getenv("TS_KUBERNETES_READ_API_SERVER_ADDRESS_FROM_ENV") == "true" {
-		// Derive the API server address from the environment variables
-		// Used to set http server in tests, or optionally enabled by flag
-		kc.SetURL(fmt.Sprintf("https://%s:%s", os.Getenv("KUBERNETES_SERVICE_HOST"), os.Getenv("KUBERNETES_SERVICE_PORT_HTTPS")))
+	ak, ok := s.Data["authkey"]
+	if !ok {
+		return "", nil
 	}
-	return &kubeClient{Client: kc, stateSecret: stateSecret}, nil
+	return string(ak), nil
 }
 
-// storeDeviceID writes deviceID to 'device_id' data field of the client's state Secret.
-func (kc *kubeClient) storeDeviceID(ctx context.Context, deviceID tailcfg.StableNodeID) error {
-	s := &kubeapi.Secret{
-		Data: map[string][]byte{
-			kubetypes.KeyDeviceID: []byte(deviceID),
-		},
+// storeDeviceInfo writes deviceID into the "device_id" data field of the kube
+// secret secretName.
+func storeDeviceInfo(ctx context.Context, secretName string, deviceID tailcfg.StableNodeID, fqdn string, addresses []netip.Prefix) error {
+	// First check if the secret exists at all. Even if running on
+	// kubernetes, we do not necessarily store state in a k8s secret.
+	if _, err := kc.GetSecret(ctx, secretName); err != nil {
+		if s, ok := err.(*kube.Status); ok {
+			if s.Code >= 400 && s.Code <= 499 {
+				// Assume the secret doesn't exist, or we don't have
+				// permission to access it.
+				return nil
+			}
+		}
+		return err
 	}
-	return kc.StrategicMergePatchSecret(ctx, kc.stateSecret, s, "tailscale-container")
-}
 
-// storeDeviceEndpoints writes device's tailnet IPs and MagicDNS name to fields 'device_ips', 'device_fqdn' of client's
-// state Secret.
-func (kc *kubeClient) storeDeviceEndpoints(ctx context.Context, fqdn string, addresses []netip.Prefix) error {
 	var ips []string
 	for _, addr := range addresses {
 		ips = append(ips, addr.Addr().String())
@@ -75,39 +57,28 @@ func (kc *kubeClient) storeDeviceEndpoints(ctx context.Context, fqdn string, add
 		return err
 	}
 
-	s := &kubeapi.Secret{
+	m := &kube.Secret{
 		Data: map[string][]byte{
-			kubetypes.KeyDeviceFQDN: []byte(fqdn),
-			kubetypes.KeyDeviceIPs:  deviceIPs,
+			"device_id":   []byte(deviceID),
+			"device_fqdn": []byte(fqdn),
+			"device_ips":  deviceIPs,
 		},
 	}
-	return kc.StrategicMergePatchSecret(ctx, kc.stateSecret, s, "tailscale-container")
-}
-
-// storeHTTPSEndpoint writes an HTTPS endpoint exposed by this device via 'tailscale serve' to the client's state
-// Secret. In practice this will be the same value that gets written to 'device_fqdn', but this should only be called
-// when the serve config has been successfully set up.
-func (kc *kubeClient) storeHTTPSEndpoint(ctx context.Context, ep string) error {
-	s := &kubeapi.Secret{
-		Data: map[string][]byte{
-			kubetypes.KeyHTTPSEndpoint: []byte(ep),
-		},
-	}
-	return kc.StrategicMergePatchSecret(ctx, kc.stateSecret, s, "tailscale-container")
+	return kc.StrategicMergePatchSecret(ctx, secretName, m, "tailscale-container")
 }
 
 // deleteAuthKey deletes the 'authkey' field of the given kube
 // secret. No-op if there is no authkey in the secret.
-func (kc *kubeClient) deleteAuthKey(ctx context.Context) error {
+func deleteAuthKey(ctx context.Context, secretName string) error {
 	// m is a JSON Patch data structure, see https://jsonpatch.com/ or RFC 6902.
-	m := []kubeclient.JSONPatch{
+	m := []kube.JSONPatch{
 		{
 			Op:   "remove",
 			Path: "/data/authkey",
 		},
 	}
-	if err := kc.JSONPatchResource(ctx, kc.stateSecret, kubeclient.TypeSecrets, m); err != nil {
-		if s, ok := err.(*kubeapi.Status); ok && s.Code == http.StatusUnprocessableEntity {
+	if err := kc.JSONPatchSecret(ctx, secretName, m); err != nil {
+		if s, ok := err.(*kube.Status); ok && s.Code == http.StatusUnprocessableEntity {
 			// This is kubernetes-ese for "the field you asked to
 			// delete already doesn't exist", aka no-op.
 			return nil
@@ -117,78 +88,22 @@ func (kc *kubeClient) deleteAuthKey(ctx context.Context) error {
 	return nil
 }
 
-// storeCapVerUID stores the current capability version of tailscale and, if provided, UID of the Pod in the tailscale
-// state Secret.
-// These two fields are used by the Kubernetes Operator to observe the current capability version of tailscaled running in this container.
-func (kc *kubeClient) storeCapVerUID(ctx context.Context, podUID string) error {
-	capVerS := fmt.Sprintf("%d", tailcfg.CurrentCapabilityVersion)
-	d := map[string][]byte{
-		kubetypes.KeyCapVer: []byte(capVerS),
+var kc *kube.Client
+
+func initKube(root string) {
+	if root != "/" {
+		// If we are running in a test, we need to set the root path to the fake
+		// service account directory.
+		kube.SetRootPathForTesting(root)
 	}
-	if podUID != "" {
-		d[kubetypes.KeyPodUID] = []byte(podUID)
+	var err error
+	kc, err = kube.New()
+	if err != nil {
+		log.Fatalf("Error creating kube client: %v", err)
 	}
-	s := &kubeapi.Secret{
-		Data: d,
-	}
-	return kc.StrategicMergePatchSecret(ctx, kc.stateSecret, s, "tailscale-container")
-}
-
-// waitForConsistentState waits for tailscaled to finish writing state if it
-// looks like it's started. It is designed to reduce the likelihood that
-// tailscaled gets shut down in the window between authenticating to control
-// and finishing writing state. However, it's not bullet proof because we can't
-// atomically authenticate and write state.
-func (kc *kubeClient) waitForConsistentState(ctx context.Context) error {
-	var logged bool
-
-	bo := backoff.NewBackoff("", logger.Discard, 2*time.Second)
-	for {
-		select {
-		case <-ctx.Done():
-			return ctx.Err()
-		default:
-		}
-		secret, err := kc.GetSecret(ctx, kc.stateSecret)
-		if ctx.Err() != nil || kubeclient.IsNotFoundErr(err) {
-			return nil
-		}
-		if err != nil {
-			return fmt.Errorf("getting Secret %q: %v", kc.stateSecret, err)
-		}
-
-		if hasConsistentState(secret.Data) {
-			return nil
-		}
-
-		if !logged {
-			log.Printf("Waiting for tailscaled to finish writing state to Secret %q", kc.stateSecret)
-			logged = true
-		}
-		bo.BackOff(ctx, errors.New("")) // Fake error to trigger actual sleep.
+	if root != "/" {
+		// If we are running in a test, we need to set the URL to the
+		// httptest server.
+		kc.SetURL(fmt.Sprintf("https://%s:%s", os.Getenv("KUBERNETES_SERVICE_HOST"), os.Getenv("KUBERNETES_SERVICE_PORT_HTTPS")))
 	}
 }
-
-// hasConsistentState returns true is there is either no state or the full set
-// of expected keys are present.
-func hasConsistentState(d map[string][]byte) bool {
-	var (
-		_, hasCurrent = d[string(ipn.CurrentProfileStateKey)]
-		_, hasKnown   = d[string(ipn.KnownProfilesStateKey)]
-		_, hasMachine = d[string(ipn.MachineKeyStateKey)]
-		hasProfile    bool
-	)
-
-	for k := range d {
-		if strings.HasPrefix(k, "profile-") {
-			if hasProfile {
-				return false // We only expect one profile.
-			}
-			hasProfile = true
-		}
-	}
-
-	// Approximate check, we don't want to reimplement all of profileManager.
-	return (hasCurrent && hasKnown && hasMachine && hasProfile) ||
-		(!hasCurrent && !hasKnown && !hasMachine && !hasProfile)
-}

cmd/containerboot/kube_test.go

@@ -1,240 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build linux
-
-package main
-
-import (
-	"context"
-	"errors"
-	"testing"
-	"time"
-
-	"github.com/google/go-cmp/cmp"
-	"tailscale.com/ipn"
-	"tailscale.com/kube/kubeapi"
-	"tailscale.com/kube/kubeclient"
-)
-
-func TestSetupKube(t *testing.T) {
-	tests := []struct {
-		name    string
-		cfg     *settings
-		wantErr bool
-		wantCfg *settings
-		kc      *kubeClient
-	}{
-		{
-			name: "TS_AUTHKEY set, state Secret exists",
-			cfg: &settings{
-				AuthKey:    "foo",
-				KubeSecret: "foo",
-			},
-			kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
-				CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
-					return false, false, nil
-				},
-				GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
-					return nil, nil
-				},
-			}},
-			wantCfg: &settings{
-				AuthKey:    "foo",
-				KubeSecret: "foo",
-			},
-		},
-		{
-			name: "TS_AUTHKEY set, state Secret does not exist, we have permissions to create it",
-			cfg: &settings{
-				AuthKey:    "foo",
-				KubeSecret: "foo",
-			},
-			kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
-				CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
-					return false, true, nil
-				},
-				GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
-					return nil, &kubeapi.Status{Code: 404}
-				},
-			}},
-			wantCfg: &settings{
-				AuthKey:    "foo",
-				KubeSecret: "foo",
-			},
-		},
-		{
-			name: "TS_AUTHKEY set, state Secret does not exist, we do not have permissions to create it",
-			cfg: &settings{
-				AuthKey:    "foo",
-				KubeSecret: "foo",
-			},
-			kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
-				CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
-					return false, false, nil
-				},
-				GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
-					return nil, &kubeapi.Status{Code: 404}
-				},
-			}},
-			wantCfg: &settings{
-				AuthKey:    "foo",
-				KubeSecret: "foo",
-			},
-			wantErr: true,
-		},
-		{
-			name: "TS_AUTHKEY set, we encounter a non-404 error when trying to retrieve the state Secret",
-			cfg: &settings{
-				AuthKey:    "foo",
-				KubeSecret: "foo",
-			},
-			kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
-				CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
-					return false, false, nil
-				},
-				GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
-					return nil, &kubeapi.Status{Code: 403}
-				},
-			}},
-			wantCfg: &settings{
-				AuthKey:    "foo",
-				KubeSecret: "foo",
-			},
-			wantErr: true,
-		},
-		{
-			name: "TS_AUTHKEY set, we encounter a non-404 error when trying to check Secret permissions",
-			cfg: &settings{
-				AuthKey:    "foo",
-				KubeSecret: "foo",
-			},
-			wantCfg: &settings{
-				AuthKey:    "foo",
-				KubeSecret: "foo",
-			},
-			kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
-				CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
-					return false, false, errors.New("broken")
-				},
-			}},
-			wantErr: true,
-		},
-		{
-			// Interactive login using URL in Pod logs
-			name: "TS_AUTHKEY not set, state Secret does not exist, we have permissions to create it",
-			cfg: &settings{
-				KubeSecret: "foo",
-			},
-			wantCfg: &settings{
-				KubeSecret: "foo",
-			},
-			kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
-				CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
-					return false, true, nil
-				},
-				GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
-					return nil, &kubeapi.Status{Code: 404}
-				},
-			}},
-		},
-		{
-			// Interactive login using URL in Pod logs
-			name: "TS_AUTHKEY not set, state Secret exists, but does not contain auth key",
-			cfg: &settings{
-				KubeSecret: "foo",
-			},
-			wantCfg: &settings{
-				KubeSecret: "foo",
-			},
-			kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
-				CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
-					return false, false, nil
-				},
-				GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
-					return &kubeapi.Secret{}, nil
-				},
-			}},
-		},
-		{
-			name: "TS_AUTHKEY not set, state Secret contains auth key, we do not have RBAC to patch it",
-			cfg: &settings{
-				KubeSecret: "foo",
-			},
-			kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
-				CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
-					return false, false, nil
-				},
-				GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
-					return &kubeapi.Secret{Data: map[string][]byte{"authkey": []byte("foo")}}, nil
-				},
-			}},
-			wantCfg: &settings{
-				KubeSecret: "foo",
-			},
-			wantErr: true,
-		},
-		{
-			name: "TS_AUTHKEY not set, state Secret contains auth key, we have RBAC to patch it",
-			cfg: &settings{
-				KubeSecret: "foo",
-			},
-			kc: &kubeClient{stateSecret: "foo", Client: &kubeclient.FakeClient{
-				CheckSecretPermissionsImpl: func(context.Context, string) (bool, bool, error) {
-					return true, false, nil
-				},
-				GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
-					return &kubeapi.Secret{Data: map[string][]byte{"authkey": []byte("foo")}}, nil
-				},
-			}},
-			wantCfg: &settings{
-				KubeSecret:         "foo",
-				AuthKey:            "foo",
-				KubernetesCanPatch: true,
-			},
-		},
-	}
-
-	for _, tt := range tests {
-		kc := tt.kc
-		t.Run(tt.name, func(t *testing.T) {
-			if err := tt.cfg.setupKube(context.Background(), kc); (err != nil) != tt.wantErr {
-				t.Errorf("settings.setupKube() error = %v, wantErr %v", err, tt.wantErr)
-			}
-			if diff := cmp.Diff(*tt.cfg, *tt.wantCfg); diff != "" {
-				t.Errorf("unexpected contents of settings after running settings.setupKube()\n(-got +want):\n%s", diff)
-			}
-		})
-	}
-}
-
-func TestWaitForConsistentState(t *testing.T) {
-	data := map[string][]byte{
-		// Missing _current-profile.
-		string(ipn.KnownProfilesStateKey): []byte(""),
-		string(ipn.MachineKeyStateKey):    []byte(""),
-		"profile-foo":                     []byte(""),
-	}
-	kc := &kubeClient{
-		Client: &kubeclient.FakeClient{
-			GetSecretImpl: func(context.Context, string) (*kubeapi.Secret, error) {
-				return &kubeapi.Secret{
-					Data: data,
-				}, nil
-			},
-		},
-	}
-
-	ctx, cancel := context.WithTimeout(context.Background(), time.Second)
-	defer cancel()
-	if err := kc.waitForConsistentState(ctx); err != context.DeadlineExceeded {
-		t.Fatalf("expected DeadlineExceeded, got %v", err)
-	}
-
-	ctx, cancel = context.WithTimeout(context.Background(), time.Second)
-	defer cancel()
-	data[string(ipn.CurrentProfileStateKey)] = []byte("")
-	if err := kc.waitForConsistentState(ctx); err != nil {
-		t.Fatalf("expected nil, got %v", err)
-	}
-}

cmd/containerboot/main_test.go

@@ -25,16 +25,12 @@ import (
 	"strconv"
 	"strings"
 	"sync"
-	"syscall"
 	"testing"
 	"time"
 
 	"github.com/google/go-cmp/cmp"
 	"golang.org/x/sys/unix"
 	"tailscale.com/ipn"
-	"tailscale.com/kube/egressservices"
-	"tailscale.com/kube/kubeclient"
-	"tailscale.com/kube/kubetypes"
 	"tailscale.com/tailcfg"
 	"tailscale.com/tstest"
 	"tailscale.com/types/netmap"
@@ -51,13 +47,16 @@ func TestContainerBoot(t *testing.T) {
 	defer lapi.Close()
 
 	kube := kubeServer{FSRoot: d}
-	kube.Start(t)
+	if err := kube.Start(); err != nil {
+		t.Fatal(err)
+	}
 	defer kube.Close()
 
-	tailscaledConf := &ipn.ConfigVAlpha{AuthKey: ptr.To("foo"), Version: "alpha0"}
-	serveConf := ipn.ServeConfig{TCP: map[uint16]*ipn.TCPPortHandler{80: {HTTP: true}}}
-	egressCfg := egressSvcConfig("foo", "foo.tailnetxyz.ts.net")
-	egressStatus := egressSvcStatus("foo", "foo.tailnetxyz.ts.net")
+	tailscaledConf := &ipn.ConfigVAlpha{AuthKey: func(s string) *string { return &s }("foo"), Version: "alpha0"}
+	tailscaledConfBytes, err := json.Marshal(tailscaledConf)
+	if err != nil {
+		t.Fatalf("error unmarshaling tailscaled config: %v", err)
+	}
 
 	dirs := []string{
 		"var/lib",
@@ -66,7 +65,7 @@ func TestContainerBoot(t *testing.T) {
 		"dev/net",
 		"proc/sys/net/ipv4",
 		"proc/sys/net/ipv6/conf/all",
-		"etc/tailscaled",
+		"etc",
 	}
 	for _, path := range dirs {
 		if err := os.MkdirAll(filepath.Join(d, path), 0700); err != nil {
@@ -81,10 +80,7 @@ func TestContainerBoot(t *testing.T) {
 		"dev/net/tun":                           []byte(""),
 		"proc/sys/net/ipv4/ip_forward":          []byte("0"),
 		"proc/sys/net/ipv6/conf/all/forwarding": []byte("0"),
-		"etc/tailscaled/cap-95.hujson":          mustJSON(t, tailscaledConf),
-		"etc/tailscaled/serve-config.json":      mustJSON(t, serveConf),
-		filepath.Join("etc/tailscaled/", egressservices.KeyEgressServices): mustJSON(t, egressCfg),
-		filepath.Join("etc/tailscaled/", egressservices.KeyHEPPings):       []byte("4"),
+		"etc/tailscaled":                        tailscaledConfBytes,
 	}
 	resetFiles := func() {
 		for path, content := range files {
@@ -105,29 +101,6 @@ func TestContainerBoot(t *testing.T) {
 
 	argFile := filepath.Join(d, "args")
 	runningSockPath := filepath.Join(d, "tmp/tailscaled.sock")
-	var localAddrPort, healthAddrPort int
-	for _, p := range []*int{&localAddrPort, &healthAddrPort} {
-		ln, err := net.Listen("tcp", ":0")
-		if err != nil {
-			t.Fatalf("Failed to open listener: %v", err)
-		}
-		if err := ln.Close(); err != nil {
-			t.Fatalf("Failed to close listener: %v", err)
-		}
-		port := ln.Addr().(*net.TCPAddr).Port
-		*p = port
-	}
-	metricsURL := func(port int) string {
-		return fmt.Sprintf("http://127.0.0.1:%d/metrics", port)
-	}
-	healthURL := func(port int) string {
-		return fmt.Sprintf("http://127.0.0.1:%d/healthz", port)
-	}
-	egressSvcTerminateURL := func(port int) string {
-		return fmt.Sprintf("http://127.0.0.1:%d%s", port, kubetypes.EgessServicesPreshutdownEP)
-	}
-
-	capver := fmt.Sprintf("%d", tailcfg.CurrentCapabilityVersion)
 
 	type phase struct {
 		// If non-nil, send this IPN bus notification (and remember it as the
@@ -137,31 +110,12 @@ func TestContainerBoot(t *testing.T) {
 
 		// WantCmds is the commands that containerboot should run in this phase.
 		WantCmds []string
-
 		// WantKubeSecret is the secret keys/values that should exist in the
 		// kube secret.
 		WantKubeSecret map[string]string
-
-		// Update the kube secret with these keys/values at the beginning of the
-		// phase (simulates our fake tailscaled doing it).
-		UpdateKubeSecret map[string]string
-
 		// WantFiles files that should exist in the container and their
 		// contents.
 		WantFiles map[string]string
-
-		// WantLog is a log message we expect from containerboot.
-		WantLog string
-
-		// If set for a phase, the test will expect containerboot to exit with
-		// this error code, and the test will finish on that phase without
-		// waiting for the successful startup log message.
-		WantExitCode *int
-
-		// The signal to send to containerboot at the start of the phase.
-		Signal *syscall.Signal
-
-		EndpointStatuses map[string]int
 	}
 	runningNotify := &ipn.Notify{
 		State: ptr.To(ipn.Running),
@@ -190,11 +144,6 @@ func TestContainerBoot(t *testing.T) {
 						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=mem: --statedir=/tmp --tun=userspace-networking",
 						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock up --accept-dns=false",
 					},
-					// No metrics or health by default.
-					EndpointStatuses: map[string]int{
-						metricsURL(9002): -1,
-						healthURL(9002):  -1,
-					},
 				},
 				{
 					Notify: runningNotify,
@@ -400,58 +349,12 @@ func TestContainerBoot(t *testing.T) {
 						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=mem: --statedir=/tmp",
 						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock up --accept-dns=false --authkey=tskey-key",
 					},
-					WantFiles: map[string]string{
-						"proc/sys/net/ipv4/ip_forward":          "1",
-						"proc/sys/net/ipv6/conf/all/forwarding": "0",
-					},
 				},
 				{
 					Notify: runningNotify,
 				},
 			},
 		},
-		{
-			Name: "egress_proxy_fqdn_ipv6_target_on_ipv4_host",
-			Env: map[string]string{
-				"TS_AUTHKEY":               "tskey-key",
-				"TS_TAILNET_TARGET_FQDN":   "ipv6-node.test.ts.net", // resolves to IPv6 address
-				"TS_USERSPACE":             "false",
-				"TS_TEST_FAKE_NETFILTER_6": "false",
-			},
-			Phases: []phase{
-				{
-					WantCmds: []string{
-						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=mem: --statedir=/tmp",
-						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock up --accept-dns=false --authkey=tskey-key",
-					},
-					WantFiles: map[string]string{
-						"proc/sys/net/ipv4/ip_forward":          "1",
-						"proc/sys/net/ipv6/conf/all/forwarding": "0",
-					},
-				},
-				{
-					Notify: &ipn.Notify{
-						State: ptr.To(ipn.Running),
-						NetMap: &netmap.NetworkMap{
-							SelfNode: (&tailcfg.Node{
-								StableID:  tailcfg.StableNodeID("myID"),
-								Name:      "test-node.test.ts.net",
-								Addresses: []netip.Prefix{netip.MustParsePrefix("100.64.0.1/32")},
-							}).View(),
-							Peers: []tailcfg.NodeView{
-								(&tailcfg.Node{
-									StableID:  tailcfg.StableNodeID("ipv6ID"),
-									Name:      "ipv6-node.test.ts.net",
-									Addresses: []netip.Prefix{netip.MustParsePrefix("::1/128")},
-								}).View(),
-							},
-						},
-					},
-					WantLog:      "no forwarding rules for egress addresses [::1/128], host supports IPv6: false",
-					WantExitCode: ptr.To(1),
-				},
-			},
-		},
 		{
 			Name: "authkey_once",
 			Env: map[string]string{
@@ -502,11 +405,10 @@ func TestContainerBoot(t *testing.T) {
 				{
 					Notify: runningNotify,
 					WantKubeSecret: map[string]string{
-						"authkey":          "tskey-key",
-						"device_fqdn":      "test-node.test.ts.net",
-						"device_id":        "myID",
-						"device_ips":       `["100.64.0.1"]`,
-						"tailscale_capver": capver,
+						"authkey":     "tskey-key",
+						"device_fqdn": "test-node.test.ts.net",
+						"device_id":   "myID",
+						"device_ips":  `["100.64.0.1"]`,
 					},
 				},
 			},
@@ -596,10 +498,9 @@ func TestContainerBoot(t *testing.T) {
 						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock set --accept-dns=false",
 					},
 					WantKubeSecret: map[string]string{
-						"device_fqdn":      "test-node.test.ts.net",
-						"device_id":        "myID",
-						"device_ips":       `["100.64.0.1"]`,
-						"tailscale_capver": capver,
+						"device_fqdn": "test-node.test.ts.net",
+						"device_id":   "myID",
+						"device_ips":  `["100.64.0.1"]`,
 					},
 				},
 			},
@@ -626,11 +527,10 @@ func TestContainerBoot(t *testing.T) {
 				{
 					Notify: runningNotify,
 					WantKubeSecret: map[string]string{
-						"authkey":          "tskey-key",
-						"device_fqdn":      "test-node.test.ts.net",
-						"device_id":        "myID",
-						"device_ips":       `["100.64.0.1"]`,
-						"tailscale_capver": capver,
+						"authkey":     "tskey-key",
+						"device_fqdn": "test-node.test.ts.net",
+						"device_id":   "myID",
+						"device_ips":  `["100.64.0.1"]`,
 					},
 				},
 				{
@@ -645,11 +545,10 @@ func TestContainerBoot(t *testing.T) {
 						},
 					},
 					WantKubeSecret: map[string]string{
-						"authkey":          "tskey-key",
-						"device_fqdn":      "new-name.test.ts.net",
-						"device_id":        "newID",
-						"device_ips":       `["100.64.0.1"]`,
-						"tailscale_capver": capver,
+						"authkey":     "tskey-key",
+						"device_fqdn": "new-name.test.ts.net",
+						"device_id":   "newID",
+						"device_ips":  `["100.64.0.1"]`,
 					},
 				},
 			},
@@ -739,278 +638,20 @@ func TestContainerBoot(t *testing.T) {
 			},
 		},
 		{
-			Name: "experimental tailscaled config path",
+			Name: "experimental tailscaled configfile",
 			Env: map[string]string{
-				"TS_EXPERIMENTAL_VERSIONED_CONFIG_DIR": filepath.Join(d, "etc/tailscaled/"),
+				"EXPERIMENTAL_TS_CONFIGFILE_PATH": filepath.Join(d, "etc/tailscaled"),
 			},
 			Phases: []phase{
 				{
 					WantCmds: []string{
-						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=mem: --statedir=/tmp --tun=userspace-networking --config=/etc/tailscaled/cap-95.hujson",
+						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=mem: --statedir=/tmp --tun=userspace-networking --config=/etc/tailscaled",
 					},
 				}, {
 					Notify: runningNotify,
 				},
 			},
 		},
-		{
-			Name: "metrics_enabled",
-			Env: map[string]string{
-				"TS_LOCAL_ADDR_PORT": fmt.Sprintf("[::]:%d", localAddrPort),
-				"TS_ENABLE_METRICS":  "true",
-			},
-			Phases: []phase{
-				{
-					WantCmds: []string{
-						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=mem: --statedir=/tmp --tun=userspace-networking",
-						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock up --accept-dns=false",
-					},
-					EndpointStatuses: map[string]int{
-						metricsURL(localAddrPort): 200,
-						healthURL(localAddrPort):  -1,
-					},
-				}, {
-					Notify: runningNotify,
-				},
-			},
-		},
-		{
-			Name: "health_enabled",
-			Env: map[string]string{
-				"TS_LOCAL_ADDR_PORT":     fmt.Sprintf("[::]:%d", localAddrPort),
-				"TS_ENABLE_HEALTH_CHECK": "true",
-			},
-			Phases: []phase{
-				{
-					WantCmds: []string{
-						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=mem: --statedir=/tmp --tun=userspace-networking",
-						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock up --accept-dns=false",
-					},
-					EndpointStatuses: map[string]int{
-						metricsURL(localAddrPort): -1,
-						healthURL(localAddrPort):  503, // Doesn't start passing until the next phase.
-					},
-				}, {
-					Notify: runningNotify,
-					EndpointStatuses: map[string]int{
-						metricsURL(localAddrPort): -1,
-						healthURL(localAddrPort):  200,
-					},
-				},
-			},
-		},
-		{
-			Name: "metrics_and_health_on_same_port",
-			Env: map[string]string{
-				"TS_LOCAL_ADDR_PORT":     fmt.Sprintf("[::]:%d", localAddrPort),
-				"TS_ENABLE_METRICS":      "true",
-				"TS_ENABLE_HEALTH_CHECK": "true",
-			},
-			Phases: []phase{
-				{
-					WantCmds: []string{
-						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=mem: --statedir=/tmp --tun=userspace-networking",
-						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock up --accept-dns=false",
-					},
-					EndpointStatuses: map[string]int{
-						metricsURL(localAddrPort): 200,
-						healthURL(localAddrPort):  503, // Doesn't start passing until the next phase.
-					},
-				}, {
-					Notify: runningNotify,
-					EndpointStatuses: map[string]int{
-						metricsURL(localAddrPort): 200,
-						healthURL(localAddrPort):  200,
-					},
-				},
-			},
-		},
-		{
-			Name: "local_metrics_and_deprecated_health",
-			Env: map[string]string{
-				"TS_LOCAL_ADDR_PORT":       fmt.Sprintf("[::]:%d", localAddrPort),
-				"TS_ENABLE_METRICS":        "true",
-				"TS_HEALTHCHECK_ADDR_PORT": fmt.Sprintf("[::]:%d", healthAddrPort),
-			},
-			Phases: []phase{
-				{
-					WantCmds: []string{
-						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=mem: --statedir=/tmp --tun=userspace-networking",
-						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock up --accept-dns=false",
-					},
-					EndpointStatuses: map[string]int{
-						metricsURL(localAddrPort): 200,
-						healthURL(healthAddrPort): 503, // Doesn't start passing until the next phase.
-					},
-				}, {
-					Notify: runningNotify,
-					EndpointStatuses: map[string]int{
-						metricsURL(localAddrPort): 200,
-						healthURL(healthAddrPort): 200,
-					},
-				},
-			},
-		},
-		{
-			Name: "serve_config_no_kube",
-			Env: map[string]string{
-				"TS_SERVE_CONFIG": filepath.Join(d, "etc/tailscaled/serve-config.json"),
-				"TS_AUTHKEY":      "tskey-key",
-			},
-			Phases: []phase{
-				{
-					WantCmds: []string{
-						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=mem: --statedir=/tmp --tun=userspace-networking",
-						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock up --accept-dns=false --authkey=tskey-key",
-					},
-				},
-				{
-					Notify: runningNotify,
-				},
-			},
-		},
-		{
-			Name: "serve_config_kube",
-			Env: map[string]string{
-				"KUBERNETES_SERVICE_HOST":       kube.Host,
-				"KUBERNETES_SERVICE_PORT_HTTPS": kube.Port,
-				"TS_SERVE_CONFIG":               filepath.Join(d, "etc/tailscaled/serve-config.json"),
-			},
-			KubeSecret: map[string]string{
-				"authkey": "tskey-key",
-			},
-			Phases: []phase{
-				{
-					WantCmds: []string{
-						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=kube:tailscale --statedir=/tmp --tun=userspace-networking",
-						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock up --accept-dns=false --authkey=tskey-key",
-					},
-					WantKubeSecret: map[string]string{
-						"authkey": "tskey-key",
-					},
-				},
-				{
-					Notify: runningNotify,
-					WantKubeSecret: map[string]string{
-						"authkey":          "tskey-key",
-						"device_fqdn":      "test-node.test.ts.net",
-						"device_id":        "myID",
-						"device_ips":       `["100.64.0.1"]`,
-						"https_endpoint":   "no-https",
-						"tailscale_capver": capver,
-					},
-				},
-			},
-		},
-		{
-			Name: "egress_svcs_config_kube",
-			Env: map[string]string{
-				"KUBERNETES_SERVICE_HOST":       kube.Host,
-				"KUBERNETES_SERVICE_PORT_HTTPS": kube.Port,
-				"TS_EGRESS_PROXIES_CONFIG_PATH": filepath.Join(d, "etc/tailscaled"),
-				"TS_LOCAL_ADDR_PORT":            fmt.Sprintf("[::]:%d", localAddrPort),
-			},
-			KubeSecret: map[string]string{
-				"authkey": "tskey-key",
-			},
-			Phases: []phase{
-				{
-					WantCmds: []string{
-						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=kube:tailscale --statedir=/tmp --tun=userspace-networking",
-						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock up --accept-dns=false --authkey=tskey-key",
-					},
-					WantKubeSecret: map[string]string{
-						"authkey": "tskey-key",
-					},
-					EndpointStatuses: map[string]int{
-						egressSvcTerminateURL(localAddrPort): 200,
-					},
-				},
-				{
-					Notify: runningNotify,
-					WantKubeSecret: map[string]string{
-						"egress-services":  mustBase64(t, egressStatus),
-						"authkey":          "tskey-key",
-						"device_fqdn":      "test-node.test.ts.net",
-						"device_id":        "myID",
-						"device_ips":       `["100.64.0.1"]`,
-						"tailscale_capver": capver,
-					},
-					EndpointStatuses: map[string]int{
-						egressSvcTerminateURL(localAddrPort): 200,
-					},
-				},
-			},
-		},
-		{
-			Name: "egress_svcs_config_no_kube",
-			Env: map[string]string{
-				"TS_EGRESS_PROXIES_CONFIG_PATH": filepath.Join(d, "etc/tailscaled"),
-				"TS_AUTHKEY":                    "tskey-key",
-			},
-			Phases: []phase{
-				{
-					WantLog:      "TS_EGRESS_PROXIES_CONFIG_PATH is only supported for Tailscale running on Kubernetes",
-					WantExitCode: ptr.To(1),
-				},
-			},
-		},
-		{
-			Name: "kube_shutdown_during_state_write",
-			Env: map[string]string{
-				"KUBERNETES_SERVICE_HOST":       kube.Host,
-				"KUBERNETES_SERVICE_PORT_HTTPS": kube.Port,
-				"TS_ENABLE_HEALTH_CHECK":        "true",
-			},
-			KubeSecret: map[string]string{
-				"authkey": "tskey-key",
-			},
-			Phases: []phase{
-				{
-					// Normal startup.
-					WantCmds: []string{
-						"/usr/bin/tailscaled --socket=/tmp/tailscaled.sock --state=kube:tailscale --statedir=/tmp --tun=userspace-networking",
-						"/usr/bin/tailscale --socket=/tmp/tailscaled.sock up --accept-dns=false --authkey=tskey-key",
-					},
-					WantKubeSecret: map[string]string{
-						"authkey": "tskey-key",
-					},
-				},
-				{
-					// SIGTERM before state is finished writing, should wait for
-					// consistent state before propagating SIGTERM to tailscaled.
-					Signal: ptr.To(unix.SIGTERM),
-					UpdateKubeSecret: map[string]string{
-						"_machinekey":  "foo",
-						"_profiles":    "foo",
-						"profile-baff": "foo",
-						// Missing "_current-profile" key.
-					},
-					WantKubeSecret: map[string]string{
-						"authkey":      "tskey-key",
-						"_machinekey":  "foo",
-						"_profiles":    "foo",
-						"profile-baff": "foo",
-					},
-					WantLog: "Waiting for tailscaled to finish writing state to Secret \"tailscale\"",
-				},
-				{
-					// tailscaled has finished writing state, should propagate SIGTERM.
-					UpdateKubeSecret: map[string]string{
-						"_current-profile": "foo",
-					},
-					WantKubeSecret: map[string]string{
-						"authkey":          "tskey-key",
-						"_machinekey":      "foo",
-						"_profiles":        "foo",
-						"profile-baff":     "foo",
-						"_current-profile": "foo",
-					},
-					WantLog:      "HTTP server at [::]:9002 closed",
-					WantExitCode: ptr.To(0),
-				},
-			},
-		},
 	}
 
 	for _, test := range tests {
@@ -1055,36 +696,7 @@ func TestContainerBoot(t *testing.T) {
 
 			var wantCmds []string
 			for i, p := range test.Phases {
-				for k, v := range p.UpdateKubeSecret {
-					kube.SetSecret(k, v)
-				}
 				lapi.Notify(p.Notify)
-				if p.Signal != nil {
-					cmd.Process.Signal(*p.Signal)
-				}
-				if p.WantLog != "" {
-					err := tstest.WaitFor(2*time.Second, func() error {
-						waitLogLine(t, time.Second, cbOut, p.WantLog)
-						return nil
-					})
-					if err != nil {
-						t.Fatal(err)
-					}
-				}
-
-				if p.WantExitCode != nil {
-					state, err := cmd.Process.Wait()
-					if err != nil {
-						t.Fatal(err)
-					}
-					if state.ExitCode() != *p.WantExitCode {
-						t.Fatalf("phase %d: want exit code %d, got %d", i, *p.WantExitCode, state.ExitCode())
-					}
-
-					// Early test return, we don't expect the successful startup log message.
-					return
-				}
-
 				wantCmds = append(wantCmds, p.WantCmds...)
 				waitArgs(t, 2*time.Second, d, argFile, strings.Join(wantCmds, "\n"))
 				err := tstest.WaitFor(2*time.Second, func() error {
@@ -1117,32 +729,10 @@ func TestContainerBoot(t *testing.T) {
 					return nil
 				})
 				if err != nil {
-					t.Fatalf("phase %d: %v", i, err)
-				}
-
-				for url, want := range p.EndpointStatuses {
-					err := tstest.WaitFor(2*time.Second, func() error {
-						resp, err := http.Get(url)
-						if err != nil && want != -1 {
-							return fmt.Errorf("GET %s: %v", url, err)
-						}
-						if want > 0 && resp.StatusCode != want {
-							defer resp.Body.Close()
-							body, _ := io.ReadAll(resp.Body)
-							return fmt.Errorf("GET %s, want %d, got %d\n%s", url, want, resp.StatusCode, string(body))
-						}
-
-						return nil
-					})
-					if err != nil {
-						t.Fatalf("phase %d: %v", i, err)
-					}
+					t.Fatal(err)
 				}
 			}
 			waitLogLine(t, 2*time.Second, cbOut, "Startup complete, waiting for shutdown signal")
-			if cmd.ProcessState != nil {
-				t.Fatalf("containerboot should be running but exited with exit code %d", cmd.ProcessState.ExitCode())
-			}
 		})
 	}
 }
@@ -1298,12 +888,6 @@ func (l *localAPI) ServeHTTP(w http.ResponseWriter, r *http.Request) {
 		if r.Method != "GET" {
 			panic(fmt.Sprintf("unsupported method %q", r.Method))
 		}
-	case "/localapi/v0/usermetrics":
-		if r.Method != "GET" {
-			panic(fmt.Sprintf("unsupported method %q", r.Method))
-		}
-		w.Write([]byte("fake metrics"))
-		return
 	default:
 		panic(fmt.Sprintf("unsupported path %q", r.URL.Path))
 	}
@@ -1374,18 +958,18 @@ func (k *kubeServer) Reset() {
 	k.secret = map[string]string{}
 }
 
-func (k *kubeServer) Start(t *testing.T) {
+func (k *kubeServer) Start() error {
 	root := filepath.Join(k.FSRoot, "var/run/secrets/kubernetes.io/serviceaccount")
 
 	if err := os.MkdirAll(root, 0700); err != nil {
-		t.Fatal(err)
+		return err
 	}
 
 	if err := os.WriteFile(filepath.Join(root, "namespace"), []byte("default"), 0600); err != nil {
-		t.Fatal(err)
+		return err
 	}
 	if err := os.WriteFile(filepath.Join(root, "token"), []byte("bearer_token"), 0600); err != nil {
-		t.Fatal(err)
+		return err
 	}
 
 	k.srv = httptest.NewTLSServer(k)
@@ -1394,11 +978,13 @@ func (k *kubeServer) Start(t *testing.T) {
 
 	var cert bytes.Buffer
 	if err := pem.Encode(&cert, &pem.Block{Type: "CERTIFICATE", Bytes: k.srv.Certificate().Raw}); err != nil {
-		t.Fatal(err)
+		return err
 	}
 	if err := os.WriteFile(filepath.Join(root, "ca.crt"), cert.Bytes(), 0600); err != nil {
-		t.Fatal(err)
+		return err
 	}
+
+	return nil
 }
 
 func (k *kubeServer) Close() {
@@ -1447,7 +1033,6 @@ func (k *kubeServer) serveSecret(w http.ResponseWriter, r *http.Request) {
 		http.Error(w, fmt.Sprintf("reading request body: %v", err), http.StatusInternalServerError)
 		return
 	}
-	defer r.Body.Close()
 
 	switch r.Method {
 	case "GET":
@@ -1480,32 +1065,13 @@ func (k *kubeServer) serveSecret(w http.ResponseWriter, r *http.Request) {
 				panic(fmt.Sprintf("json decode failed: %v. Body:\n\n%s", err, string(bs)))
 			}
 			for _, op := range req {
-				switch op.Op {
-				case "remove":
-					if !strings.HasPrefix(op.Path, "/data/") {
-						panic(fmt.Sprintf("unsupported json-patch path %q", op.Path))
-					}
-					delete(k.secret, strings.TrimPrefix(op.Path, "/data/"))
-				case "replace":
-					path, ok := strings.CutPrefix(op.Path, "/data/")
-					if !ok {
-						panic(fmt.Sprintf("unsupported json-patch path %q", op.Path))
-					}
-					req := make([]kubeclient.JSONPatch, 0)
-					if err := json.Unmarshal(bs, &req); err != nil {
-						panic(fmt.Sprintf("json decode failed: %v. Body:\n\n%s", err, string(bs)))
-					}
-
-					for _, patch := range req {
-						val, ok := patch.Value.(string)
-						if !ok {
-							panic(fmt.Sprintf("unsupported json patch value %v: cannot be converted to string", patch.Value))
-						}
-						k.secret[path] = val
-					}
-				default:
+				if op.Op != "remove" {
 					panic(fmt.Sprintf("unsupported json-patch op %q", op.Op))
 				}
+				if !strings.HasPrefix(op.Path, "/data/") {
+					panic(fmt.Sprintf("unsupported json-patch path %q", op.Path))
+				}
+				delete(k.secret, strings.TrimPrefix(op.Path, "/data/"))
 			}
 		case "application/strategic-merge-patch+json":
 			req := struct {
@@ -1521,44 +1087,6 @@ func (k *kubeServer) serveSecret(w http.ResponseWriter, r *http.Request) {
 			panic(fmt.Sprintf("unknown content type %q", r.Header.Get("Content-Type")))
 		}
 	default:
-		panic(fmt.Sprintf("unhandled HTTP request %s %s", r.Method, r.URL))
-	}
-}
-
-func mustBase64(t *testing.T, v any) string {
-	b := mustJSON(t, v)
-	s := base64.StdEncoding.WithPadding('=').EncodeToString(b)
-	return s
-}
-
-func mustJSON(t *testing.T, v any) []byte {
-	b, err := json.Marshal(v)
-	if err != nil {
-		t.Fatalf("error converting %v to json: %v", v, err)
-	}
-	return b
-}
-
-// egress services status given one named tailnet target specified by FQDN. As written by the proxy to its state Secret.
-func egressSvcStatus(name, fqdn string) egressservices.Status {
-	return egressservices.Status{
-		Services: map[string]*egressservices.ServiceStatus{
-			name: {
-				TailnetTarget: egressservices.TailnetTarget{
-					FQDN: fqdn,
-				},
-			},
-		},
-	}
-}
-
-// egress config given one named tailnet target specified by FQDN.
-func egressSvcConfig(name, fqdn string) egressservices.Configs {
-	return egressservices.Configs{
-		name: egressservices.Config{
-			TailnetTarget: egressservices.TailnetTarget{
-				FQDN: fqdn,
-			},
-		},
+		panic(fmt.Sprintf("unhandled HTTP method %q", r.Method))
 	}
 }

cmd/containerboot/metrics.go

@@ -1,79 +0,0 @@
-// Copyright (c) Tailscale Inc & AUTHORS
-// SPDX-License-Identifier: BSD-3-Clause
-
-//go:build linux
-
-package main
-
-import (
-	"fmt"
-	"io"
-	"net/http"
-
-	"tailscale.com/client/local"
-	"tailscale.com/client/tailscale/apitype"
-)
-
-// metrics is a simple metrics HTTP server, if enabled it forwards requests to
-// the tailscaled's LocalAPI usermetrics endpoint at /localapi/v0/usermetrics.
-type metrics struct {
-	debugEndpoint string
-	lc            *local.Client
-}
-
-func proxy(w http.ResponseWriter, r *http.Request, url string, do func(*http.Request) (*http.Response, error)) {
-	req, err := http.NewRequestWithContext(r.Context(), r.Method, url, r.Body)
-	if err != nil {
-		http.Error(w, fmt.Sprintf("failed to construct request: %s", err), http.StatusInternalServerError)
-		return
-	}
-	req.Header = r.Header.Clone()
-
-	resp, err := do(req)
-	if err != nil {
-		http.Error(w, fmt.Sprintf("failed to proxy request: %s", err), http.StatusInternalServerError)
-		return
-	}
-	defer resp.Body.Close()
-
-	for key, val := range resp.Header {
-		for _, v := range val {
-			w.Header().Add(key, v)
-		}
-	}
-	w.WriteHeader(resp.StatusCode)
-	if _, err := io.Copy(w, resp.Body); err != nil {
-		http.Error(w, err.Error(), http.StatusInternalServerError)
-	}
-}
-
-func (m *metrics) handleMetrics(w http.ResponseWriter, r *http.Request) {
-	localAPIURL := "http://" + apitype.LocalAPIHost + "/localapi/v0/usermetrics"
-	proxy(w, r, localAPIURL, m.lc.DoLocalRequest)
-}
-
-func (m *metrics) handleDebug(w http.ResponseWriter, r *http.Request) {
-	if m.debugEndpoint == "" {
-		http.Error(w, "debug endpoint not configured", http.StatusNotFound)
-		return
-	}
-
-	debugURL := "http://" + m.debugEndpoint + r.URL.Path
-	proxy(w, r, debugURL, http.DefaultClient.Do)
-}
-
-// metricsHandlers registers a simple HTTP metrics handler at /metrics, forwarding
-// requests to tailscaled's /localapi/v0/usermetrics API.
-//
-// In 1.78.x and 1.80.x, it also proxies debug paths to tailscaled's debug
-// endpoint if configured to ease migration for a breaking change serving user
-// metrics instead of debug metrics on the "metrics" port.
-func metricsHandlers(mux *http.ServeMux, lc *local.Client, debugAddrPort string) {
-	m := &metrics{
-		lc:            lc,
-		debugEndpoint: debugAddrPort,
-	}
-
-	mux.HandleFunc("GET /metrics", m.handleMetrics)
-	mux.HandleFunc("/debug/", m.handleDebug) // TODO(tomhjp): Remove for 1.82.0 release.
-}