VERSION.txt: this is v1.61.0

Signed-off-by: Percy Wegmann <percy@tailscale.com>

.github/ISSUE_TEMPLATE/bug_report.yml

@@ -1,18 +1,17 @@
 name: Bug report
-description: File a bug report
+description: File a bug report. If you need help, contact support instead
 labels: [needs-triage, bug]
 body:
   - type: markdown
     attributes:
       value: |
-        Please check if your bug is [already filed](https://github.com/tailscale/tailscale/issues).
-        Have an urgent issue? Let us know by emailing us at <support@tailscale.com>.
+        Need help with your tailnet? [Contact support](https://tailscale.com/contact/support) instead.
+        Otherwise, please check if your bug is [already filed](https://github.com/tailscale/tailscale/issues) before filing a new one.
   - type: textarea
     id: what-happened
     attributes:
       label: What is the issue?
       description: What happened? What did you expect to happen?
-      placeholder: oh no
     validations:
       required: true
   - type: textarea
@@ -61,6 +60,13 @@ body:
       placeholder: e.g., 1.14.4
     validations:
       required: false
+  - type: textarea
+    id: other-software
+    attributes:
+      label: Other software
+      description: What [other software](https://github.com/tailscale/tailscale/wiki/OtherSoftwareInterop) (networking, security, etc) are you running?
+    validations:
+      required: false
   - type: input
     id: bug-report
     attributes:

.github/ISSUE_TEMPLATE/config.yml

@@ -5,4 +5,4 @@ contact_links:
     about: Contact us for support
   - name: Troubleshooting
     url: https://tailscale.com/kb/1023/troubleshooting
-    about: Troubleshoot common issues
+    about: See the troubleshooting guide for help addressing common issues

.github/licenses.tmpl

@@ -0,0 +1,17 @@
+# Tailscale CLI and daemon dependencies
+
+The following open source dependencies are used to build the [tailscale][] and
+[tailscaled][] commands. These are primarily used on Linux and BSD variants as
+well as an [option for macOS][].
+
+[tailscale]: https://pkg.go.dev/tailscale.com/cmd/tailscale
+[tailscaled]: https://pkg.go.dev/tailscale.com/cmd/tailscaled
+[option for macOS]: https://tailscale.com/kb/1065/macos-variants/
+
+## Go Packages
+
+Some packages may only be included on certain architectures or operating systems.
+
+{{ range . }}
+ - [{{.Name}}](https://pkg.go.dev/{{.Name}}) ([{{.LicenseName}}]({{.LicenseURL}}))
+{{- end }}

.github/workflows/checklocks.yml

@@ -0,0 +1,28 @@
+name: checklocks
+
+on:
+  push:
+    branches:
+      - main
+  pull_request:
+    paths:
+      - '**/*.go'
+      - '.github/workflows/checklocks.yml'
+
+concurrency:
+  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  checklocks:
+    runs-on: [ ubuntu-latest ]
+    steps:
+      - name: Check out code
+        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: remove || true once we have applied checklocks annotations everywhere.
+        run: ./tool/go vet -vettool=/tmp/checklocks ./... || true

.github/workflows/cifuzz.yml

@@ -1,26 +0,0 @@
-name: CIFuzz
-on: [pull_request]
-jobs:
-  Fuzzing:
-    runs-on: ubuntu-latest
-    steps:
-    - name: Build Fuzzers
-      id: build
-      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
-      with:
-        oss-fuzz-project-name: 'tailscale'
-        dry-run: false
-        language: go
-    - name: Run Fuzzers
-      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
-      with:
-        oss-fuzz-project-name: 'tailscale'
-        fuzz-seconds: 300
-        dry-run: false
-        language: go
-    - name: Upload Crash
-      uses: actions/upload-artifact@v3
-      if: failure() && steps.build.outcome == 'success'
-      with:
-        name: artifacts
-        path: ./out/artifacts

.github/workflows/codeql-analysis.yml

@@ -17,9 +17,15 @@ on:
   pull_request:
     # The branches below must be a subset of the branches above
     branches: [ main ]
+  merge_group:
+    branches: [ main ]
   schedule:
     - cron: '31 14 * * 5'
 
+concurrency:
+  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
 jobs:
   analyze:
     name: Analyze
@@ -39,11 +45,17 @@ jobs:
 
     steps:
     - name: Checkout repository
-      uses: actions/checkout@v3
+      uses: actions/checkout@v4
+
+    # Install a more recent Go that understands modern go.mod content.
+    - name: Install Go
+      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@v1
+      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.
@@ -54,7 +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@v1
+      uses: github/codeql-action/autobuild@v2
 
     # ℹ️ Command-line programs to run using the OS shell.
     # 📚 https://git.io/JvXDl
@@ -68,4 +80,4 @@ jobs:
     #   make release
 
     - name: Perform CodeQL Analysis
-      uses: github/codeql-action/analyze@v1
+      uses: github/codeql-action/analyze@v2

.github/workflows/cross-darwin.yml

@@ -1,59 +0,0 @@
-name: Darwin-Cross
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-
-    steps:
-
-    - name: Set up Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18
-      id: go
-
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v3
-
-    - name: macOS build cmd
-      env:
-        GOOS: darwin
-        GOARCH: amd64
-      run: go build ./cmd/...
-
-    - name: macOS build tests
-      env:
-        GOOS: darwin
-        GOARCH: amd64
-      run: for d in $(go list -f '{{if .TestGoFiles}}{{.Dir}}{{end}}' ./... ); do (echo $d; cd $d && go test -c ); done
-
-    - name: iOS build most
-      env:
-        GOOS: ios
-        GOARCH: arm64
-      run: go install ./ipn/... ./wgengine/ ./types/... ./control/controlclient
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'

.github/workflows/cross-freebsd.yml

@@ -1,53 +0,0 @@
-name: FreeBSD-Cross
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-
-    steps:
-
-    - name: Set up Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18
-      id: go
-
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v3
-
-    - name: FreeBSD build cmd
-      env:
-        GOOS: freebsd
-        GOARCH: amd64
-      run: go build ./cmd/...
-
-    - name: FreeBSD build tests
-      env:
-        GOOS: freebsd
-        GOARCH: amd64
-      run: for d in $(go list -f '{{if .TestGoFiles}}{{.Dir}}{{end}}' ./... ); do (echo $d; cd $d && go test -c ); done
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'

.github/workflows/cross-openbsd.yml

@@ -1,53 +0,0 @@
-name: OpenBSD-Cross
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-
-    steps:
-
-    - name: Set up Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18
-      id: go
-
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v3
-
-    - name: OpenBSD build cmd
-      env:
-        GOOS: openbsd
-        GOARCH: amd64
-      run: go build ./cmd/...
-
-    - name: OpenBSD build tests
-      env:
-        GOOS: openbsd
-        GOARCH: amd64
-      run: for d in $(go list -f '{{if .TestGoFiles}}{{.Dir}}{{end}}' ./... ); do (echo $d; cd $d && go test -c ); done
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'

.github/workflows/cross-wasm.yml

@@ -1,52 +0,0 @@
-name: Wasm-Cross
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-
-    steps:
-
-    - name: Set up Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18
-      id: go
-
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v3
-
-    - name: Wasm client build
-      env:
-        GOOS: js
-        GOARCH: wasm
-      run: go build ./cmd/tsconnect/wasm
-
-    - name: tsconnect static build
-      # Use our custom Go toolchain, we set build tags (to control binary size)
-      # that depend on it.
-      run: ./tool/go run ./cmd/tsconnect build
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'

.github/workflows/cross-windows.yml

@@ -1,53 +0,0 @@
-name: Windows-Cross
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-
-    steps:
-
-    - name: Set up Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18
-      id: go
-
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v3
-
-    - name: Windows build cmd
-      env:
-        GOOS: windows
-        GOARCH: amd64
-      run: go build ./cmd/...
-
-    - name: Windows build tests
-      env:
-        GOOS: windows
-        GOARCH: amd64
-      run: for d in $(go list -f '{{if .TestGoFiles}}{{.Dir}}{{end}}' ./... ); do (echo $d; cd $d && go test -c ); done
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'

.github/workflows/depaware.yml

@@ -1,28 +0,0 @@
-name: depaware
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - name: Set up Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18
-
-    - name: Check out code
-      uses: actions/checkout@v3
-
-    - name: depaware tailscaled
-      run: go run github.com/tailscale/depaware --check tailscale.com/cmd/tailscaled
-
-    - name: depaware tailscale
-      run: go run github.com/tailscale/depaware --check tailscale.com/cmd/tailscale

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

@@ -0,0 +1,15 @@
+name: "Dockerfile build"
+on: 
+  push:
+    branches:
+    - main
+  pull_request:
+    branches:
+      - "*"
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - name: "Build Docker image"
+      run: docker build .

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

@@ -0,0 +1,27 @@
+name: update-flakehub
+
+on:
+  push:
+    tags:
+      - "v[0-9]+.*[02468].[0-9]+"
+  workflow_dispatch:
+    inputs:
+      tag:
+        description: "The existing tag to publish to FlakeHub"
+        type: "string"
+        required: true
+jobs:
+  flakehub-publish:
+    runs-on: "ubuntu-latest"
+    permissions:
+      id-token: "write"
+      contents: "read"
+    steps:
+      - uses: "actions/checkout@v4"
+        with:
+          ref: "${{ (inputs.tag != null) && format('refs/tags/{0}', inputs.tag) || '' }}"
+      - uses: "DeterminateSystems/nix-installer-action@main"
+      - uses: "DeterminateSystems/flakehub-push@main"
+        with:
+          visibility: "public"
+          tag: "${{ inputs.tag }}"

.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/go_generate.yml

@@ -1,38 +0,0 @@
-name: go generate
-
-on:
-  push:
-    branches:
-      - main
-      - "release-branch/*"
-  pull_request:
-    branches:
-      - "*"
-
-jobs:
-  check:
-    runs-on: ubuntu-latest
-
-    steps:
-      - name: Set up Go
-        uses: actions/setup-go@v3
-        with:
-          go-version: 1.18
-
-      - name: Check out code
-        uses: actions/checkout@v3
-        with:
-          fetch-depth: 0
-
-      - name: check 'go generate' is clean
-        run: |
-          if [[ "${{github.ref}}" == release-branch/* ]]
-          then
-            pkgs=$(go list ./... | grep -v dnsfallback)
-          else
-            pkgs=$(go list ./... | grep -v dnsfallback)
-          fi
-          go generate $pkgs
-          echo
-          echo
-          git diff --name-only --exit-code || (echo "The files above need updating. Please run 'go generate'."; exit 1)

.github/workflows/golangci-lint.yml

@@ -0,0 +1,40 @@
+name: golangci-lint
+on:
+  # For now, only lint pull requests, not the main branches.
+  pull_request:
+
+  # TODO(andrew): enable for main branch after an initial waiting period.
+  #push:
+  #  branches:
+  #    - main
+
+  workflow_dispatch:
+
+permissions:
+  contents: read
+  pull-requests: read
+
+concurrency:
+  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  golangci:
+    name: lint
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-go@v4
+        with:
+          go-version-file: go.mod
+          cache: false
+
+      - name: golangci-lint
+        # Note: this is the 'v3' tag as of 2023-08-14
+        uses: golangci/golangci-lint-action@639cd343e1d3b897ff35927a75193d57cfcba299
+        with:
+          version: v1.56
+
+          # Show only new issues if it's a pull request.
+          only-new-issues: true

.github/workflows/govulncheck.yml

@@ -0,0 +1,51 @@
+name: govulncheck
+
+on:
+  schedule:
+    - cron: "0 12 * * *" # 8am EST / 10am PST / 12pm UTC
+  workflow_dispatch: # allow manual trigger for testing
+  pull_request:
+    paths:
+      - ".github/workflows/govulncheck.yml"
+
+jobs:
+  source-scan:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code into the Go module directory
+        uses: actions/checkout@v4
+
+      - name: Install govulncheck
+        run: ./tool/go install golang.org/x/vuln/cmd/govulncheck@latest
+
+      - name: Scan source code for known vulnerabilities
+        run: PATH=$PWD/tool/:$PATH "$(./tool/go env GOPATH)/bin/govulncheck" -test ./...
+
+      - name: Post to slack
+        if: failure() && github.event_name == 'schedule'
+        uses: slackapi/slack-github-action@v1.24.0
+        env:
+          SLACK_BOT_TOKEN: ${{ secrets.GOVULNCHECK_BOT_TOKEN }}
+        with:
+          channel-id: 'C05PXRM304B'
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                  "text": {
+                    "type": "mrkdwn",
+                    "text": "Govulncheck failed in ${{ github.repository }}"
+                  },
+                  "accessory": {
+                    "type": "button",
+                    "text": {
+                      "type": "plain_text",
+                      "text": "View results"
+                    },
+                    "url": "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
+                  }
+                }
+              ]
+            }

.github/workflows/installer.yml

@@ -0,0 +1,102 @@
+name: test installer.sh
+
+on:
+  push:
+    branches:
+      - "main"
+    paths:
+      - scripts/installer.sh
+  pull_request:
+    branches:
+      - "*"
+    paths:
+      - scripts/installer.sh
+
+jobs:
+  test:
+    strategy:
+      # Don't abort the entire matrix if one element fails.
+      fail-fast: false
+      # Don't start all of these at once, which could saturate Github workers.
+      max-parallel: 4
+      matrix:
+        image:
+          # This is a list of Docker images against which we test our installer.
+          # If you find that some of these no longer exist, please feel free
+          # to remove them from the list.
+          # When adding new images, please only use official ones.
+          - "debian:oldstable-slim"
+          - "debian:stable-slim"
+          - "debian:testing-slim"
+          - "debian:sid-slim"
+          - "ubuntu:18.04"
+          - "ubuntu:20.04"
+          - "ubuntu:22.04"
+          - "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"
+          - "oraclelinux:9"
+          - "oraclelinux:8"
+          - "fedora:latest"
+          - "rockylinux:8.7"
+          - "rockylinux:9"
+          - "amazonlinux:latest"
+          - "opensuse/leap:latest"
+          - "opensuse/tumbleweed:latest"
+          - "archlinux:latest"
+          - "alpine:3.14"
+          - "alpine:latest"
+          - "alpine:edge"
+        deps:
+          # Run all images installing curl as a dependency.
+          - curl
+        include:
+          # 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 (yum)
+      # tar and gzip are needed by the actions/checkout below.
+      run: yum install -y --allowerasing tar gzip ${{ matrix.deps }}
+      if: |
+        contains(matrix.image, 'centos')
+        || contains(matrix.image, 'oraclelinux')
+        || contains(matrix.image, 'fedora')
+        || contains(matrix.image, 'amazonlinux')
+    - name: install dependencies (zypper)
+      # tar and gzip are needed by the actions/checkout below.
+      run: zypper --non-interactive install tar gzip ${{ matrix.deps }}
+      if: contains(matrix.image, 'opensuse')
+    - name: install dependencies (apt-get)
+      run: |
+        apt-get update
+        apt-get install -y ${{ matrix.deps }}
+      if: |
+        contains(matrix.image, 'debian')
+        || contains(matrix.image, 'ubuntu')
+        || contains(matrix.image, 'elementary')
+        || contains(matrix.image, 'parrotsec')
+        || contains(matrix.image, 'kalilinux')
+    - name: checkout
+      uses: actions/checkout@v4
+    - name: run installer
+      run: scripts/installer.sh
+      # Package installation can fail in docker because systemd is not running
+      # as PID 1, so ignore errors at this step. The real check is the
+      # `tailscale --version` command below.
+      continue-on-error: true
+    - name: check tailscale version
+      run: tailscale --version

.github/workflows/kubemanifests.yaml

@@ -0,0 +1,31 @@
+name: "Kubernetes manifests"
+on:
+  pull_request:
+   paths: 
+   - './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
+# running
+concurrency:
+  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  testchart:
+    runs-on: [ ubuntu-latest ]
+    steps:
+    - name: Check out code
+      uses: actions/checkout@v4
+    - name: Build and lint Helm chart
+      run: |
+        eval `./tool/go run ./cmd/mkversion`
+        ./tool/helm package --app-version="${VERSION_SHORT}" --version=${VERSION_SHORT} './cmd/k8s-operator/deploy/chart'
+        ./tool/helm lint "tailscale-operator-${VERSION_SHORT}.tgz"
+    - name: Verify that static manifests are up to date
+      run: |
+        make kube-generate-all
+        echo
+        echo
+        git diff --name-only --exit-code || (echo "Generated files for Tailscale Kubernetes operator are out of date. Please run 'make kube-generate-all' and commit the diff."; exit 1)

.github/workflows/license.yml

@@ -1,40 +0,0 @@
-name: license
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - name: Set up Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18
-
-    - name: Check out code
-      uses: actions/checkout@v3
-
-    - name: Run license checker
-      run: ./scripts/check_license_headers.sh .
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'

.github/workflows/linux-race.yml

@@ -1,63 +0,0 @@
-name: Linux race
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-
-    steps:
-
-    - name: Set up Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18
-      id: go
-
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v3
-
-    - name: Basic build
-      run: go build ./cmd/...
-
-    - name: Run tests and benchmarks with -race flag on linux
-      run: go test -race -bench=. -benchtime=1x ./...
-
-    - name: Check that no tracked files in the repo have been modified
-      run: git diff --no-ext-diff --name-only --exit-code || (echo "Build/test modified the files above."; exit 1)
-
-    - name: Check that no files have been added to the repo
-      run: |
-        # Note: The "error: pathspec..." you see below is normal!
-        # In the success case in which there are no new untracked files,
-        # git ls-files complains about the pathspec not matching anything.
-        # That's OK. It's not worth the effort to suppress. Please ignore it.
-        if git ls-files --others --exclude-standard --directory --no-empty-directory --error-unmatch -- ':/*'
-        then
-          echo "Build/test created untracked files in the repo (file names above)."
-          exit 1
-        fi
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'
-

.github/workflows/linux.yml

@@ -1,72 +0,0 @@
-name: Linux
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-
-    steps:
-
-    - name: Set up Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18
-      id: go
-
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v3
-
-    - name: Basic build
-      run: go build ./cmd/...
-
-    - name: Get QEMU
-      run: |
-        # The qemu in Ubuntu 20.04 (Focal) is too old; we need 5.x something
-        # to run Go binaries. 5.2.0 (Debian bullseye) empirically works, and
-        # use this PPA which brings in a modern qemu.
-        sudo add-apt-repository -y ppa:jacob/virtualisation
-        sudo apt-get -y update
-        sudo apt-get -y install qemu-user
-
-    - name: Run tests on linux
-      run: go test -bench=. -benchtime=1x ./...
-
-    - name: Check that no tracked files in the repo have been modified
-      run: git diff --no-ext-diff --name-only --exit-code || (echo "Build/test modified the files above."; exit 1)
-
-    - name: Check that no files have been added to the repo
-      run: |
-        # Note: The "error: pathspec..." you see below is normal!
-        # In the success case in which there are no new untracked files,
-        # git ls-files complains about the pathspec not matching anything.
-        # That's OK. It's not worth the effort to suppress. Please ignore it.
-        if git ls-files --others --exclude-standard --directory --no-empty-directory --error-unmatch -- ':/*'
-        then
-          echo "Build/test created untracked files in the repo (file names above)."
-          exit 1
-        fi
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'
-

.github/workflows/linux32.yml

@@ -1,63 +0,0 @@
-name: Linux 32-bit
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-
-    steps:
-
-    - name: Set up Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18
-      id: go
-
-    - name: Check out code into the Go module directory
-      uses: actions/checkout@v3
-
-    - name: Basic build
-      run: GOARCH=386 go build ./cmd/...
-
-    - name: Run tests on linux
-      run: GOARCH=386 go test -bench=. -benchtime=1x ./...
-
-    - name: Check that no tracked files in the repo have been modified
-      run: git diff --no-ext-diff --name-only --exit-code || (echo "Build/test modified the files above."; exit 1)
-
-    - name: Check that no files have been added to the repo
-      run: |
-        # Note: The "error: pathspec..." you see below is normal!
-        # In the success case in which there are no new untracked files,
-        # git ls-files complains about the pathspec not matching anything.
-        # That's OK. It's not worth the effort to suppress. Please ignore it.
-        if git ls-files --others --exclude-standard --directory --no-empty-directory --error-unmatch -- ':/*'
-        then
-          echo "Build/test created untracked files in the repo (file names above)."
-          exit 1
-        fi
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'
-

.github/workflows/staticcheck.yml

@@ -1,70 +0,0 @@
-name: staticcheck
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  build:
-    runs-on: ubuntu-latest
-
-    steps:
-    - name: Set up Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18
-
-    - name: Check out code
-      uses: actions/checkout@v3
-
-    - name: Run go vet
-      run: go vet ./...
-
-    - name: Install staticcheck
-      run: "GOBIN=~/.local/bin go install honnef.co/go/tools/cmd/staticcheck"
-
-    - name: Print staticcheck version
-      run: "staticcheck -version"
-
-    - name: Run staticcheck (linux/amd64)
-      env:
-        GOOS: linux
-        GOARCH: amd64
-      run: "staticcheck -- $(go list ./... | grep -v tempfork)"
-
-    - name: Run staticcheck (darwin/amd64)
-      env:
-        GOOS: darwin
-        GOARCH: amd64
-      run: "staticcheck -- $(go list ./... | grep -v tempfork)"
-
-    - name: Run staticcheck (windows/amd64)
-      env:
-        GOOS: windows
-        GOARCH: amd64
-      run: "staticcheck -- $(go list ./... | grep -v tempfork)"
-
-    - name: Run staticcheck (windows/386)
-      env:
-        GOOS: windows
-        GOARCH: "386"
-      run: "staticcheck -- $(go list ./... | grep -v tempfork)"
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'

.github/workflows/test.yml

@@ -0,0 +1,563 @@
+# This is our main "CI tests" workflow. It runs everything that should run on
+# both PRs and merged commits, and for the latter reports failures to slack.
+name: CI
+
+env:
+  # Our fuzz job, powered by OSS-Fuzz, fails periodically because we upgrade to
+  # new Go versions very eagerly. OSS-Fuzz is a little more conservative, and
+  # ends up being unable to compile our code.
+  #
+  # When this happens, we want to disable the fuzz target until OSS-Fuzz catches
+  # up. However, we also don't want to forget to turn it back on when OSS-Fuzz
+  # can once again build our code.
+  #
+  # This variable toggles the fuzz job between two modes:
+  #  - false: we expect fuzzing to be happy, and should report failure if it's not.
+  #  - true: we expect fuzzing is broken, and should report failure if it start working.
+  TS_FUZZ_CURRENTLY_BROKEN: false
+
+on:
+  push:
+    branches:
+      - "main"
+      - "release-branch/*"
+  pull_request:
+    # all PRs on all branches
+  merge_group:
+    branches:
+      - "main"
+
+concurrency:
+  # For PRs, later CI runs preempt previous ones. e.g. a force push on a PR
+  # cancels running CI jobs and starts all new ones.
+  #
+  # For non-PR pushes, concurrency.group needs to be unique for every distinct
+  # CI run we want to have happen. Use run_id, which in practice means all
+  # non-PR CI runs will be allowed to run without preempting each other.
+  group: ${{ github.workflow }}-$${{ github.pull_request.number || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  race-root-integration:
+    runs-on: ubuntu-22.04
+    strategy:
+      fail-fast: false # don't abort the entire matrix if one element fails
+      matrix:
+        include:
+          - shard: '1/4'
+          - shard: '2/4'
+          - shard: '3/4'
+          - shard: '4/4'
+    steps:
+    - name: checkout
+      uses: actions/checkout@v4
+    - name: build test wrapper
+      run: ./tool/go build -o /tmp/testwrapper ./cmd/testwrapper
+    - name: integration tests as root
+      run: PATH=$PWD/tool:$PATH /tmp/testwrapper -exec "sudo -E" -race ./tstest/integration/
+      env:
+        TS_TEST_SHARD: ${{ matrix.shard }}
+
+  test:
+    strategy:
+      fail-fast: false # don't abort the entire matrix if one element fails
+      matrix:
+        include:
+          - goarch: amd64
+            coverflags: "-coverprofile=/tmp/coverage.out"
+          - goarch: amd64
+            buildflags: "-race"
+            shard: '1/3'
+          - goarch: amd64
+            buildflags: "-race"
+            shard: '2/3'
+          - goarch: amd64
+            buildflags: "-race"
+            shard: '3/3'
+          - goarch: "386" # thanks yaml
+    runs-on: ubuntu-22.04
+    steps:
+    - name: checkout
+      uses: actions/checkout@v4
+    - name: Restore Cache
+      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
+        # 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 }}-${{ matrix.goarch }}-${{ matrix.buildflags }}-go-2-${{ hashFiles('**/go.sum') }}-${{ github.run_id }}
+        restore-keys: |
+          ${{ github.job }}-${{ runner.os }}-${{ matrix.goarch }}-${{ matrix.buildflags }}-go-2-${{ hashFiles('**/go.sum') }}
+          ${{ github.job }}-${{ runner.os }}-${{ matrix.goarch }}-${{ matrix.buildflags }}-go-2-
+    - name: build all
+      if: matrix.buildflags == '' # skip on race builder
+      run: ./tool/go build ${{matrix.buildflags}} ./...
+      env:
+        GOARCH: ${{ matrix.goarch }}
+    - name: build variant CLIs
+      if: matrix.buildflags == '' # skip on race builder
+      run: |
+        export TS_USE_TOOLCHAIN=1
+        ./build_dist.sh --extra-small ./cmd/tailscaled
+        ./build_dist.sh --box ./cmd/tailscaled
+        ./build_dist.sh --extra-small --box ./cmd/tailscaled
+        rm -f tailscaled
+      env:
+        GOARCH: ${{ matrix.goarch }}
+    - name: get qemu # for tstest/archtest
+      if: matrix.goarch == 'amd64' && matrix.buildflags == ''
+      run: |
+        sudo apt-get -y update
+        sudo apt-get -y install qemu-user
+    - name: build test wrapper
+      run: ./tool/go build -o /tmp/testwrapper ./cmd/testwrapper
+    - name: test all
+      run: NOBASHDEBUG=true PATH=$PWD/tool:$PATH /tmp/testwrapper ${{matrix.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:
+        GOARCH: ${{ matrix.goarch }}
+    - name: check that no tracked files changed
+      run: git diff --no-ext-diff --name-only --exit-code || (echo "Build/test modified the files above."; exit 1)
+    - name: check that no new files were added
+      run: |
+        # Note: The "error: pathspec..." you see below is normal!
+        # In the success case in which there are no new untracked files,
+        # git ls-files complains about the pathspec not matching anything.
+        # That's OK. It's not worth the effort to suppress. Please ignore it.
+        if git ls-files --others --exclude-standard --directory --no-empty-directory --error-unmatch -- ':/*'
+        then
+          echo "Build/test created untracked files in the repo (file names above)."
+          exit 1
+        fi
+
+  windows:
+    runs-on: windows-2022
+    steps:
+    - name: checkout
+      uses: actions/checkout@v4
+
+    - name: Install Go
+      uses: actions/setup-go@v4
+      with:
+        go-version-file: go.mod
+        cache: false
+
+    - name: Restore Cache
+      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
+        # 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 }}-go-2-${{ hashFiles('**/go.sum') }}-${{ github.run_id }}
+        restore-keys: |
+          ${{ github.job }}-${{ runner.os }}-go-2-${{ hashFiles('**/go.sum') }}
+          ${{ github.job }}-${{ runner.os }}-go-2-
+    - name: test
+      run: go run ./cmd/testwrapper ./...
+    - name: bench all
+      # Don't use -bench=. -benchtime=1x.
+      # Somewhere in the layers (powershell?)
+      # the equals signs cause great confusion.
+      run: go test ./... -bench . -benchtime 1x -run "^$"
+
+  privileged:
+    runs-on: ubuntu-22.04
+    container:
+      image: golang:latest
+      options: --privileged
+    steps:
+    - name: checkout
+      uses: actions/checkout@v4
+    - name: chown
+      run: chown -R $(id -u):$(id -g) $PWD
+    - name: privileged tests
+      run: ./tool/go test ./util/linuxfw
+
+  vm:
+    runs-on: ["self-hosted", "linux", "vm"]
+    # VM tests run with some privileges, don't let them run on 3p PRs.
+    if: github.repository == 'tailscale/tailscale'
+    steps:
+    - name: checkout
+      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: "/tmp"
+        TMPDIR: "/tmp"
+        XDB_CACHE_HOME: "/var/lib/ghrunner/cache"
+
+  race-build:
+    runs-on: ubuntu-22.04
+    steps:
+    - name: checkout
+      uses: actions/checkout@v4
+    - name: build all
+      run: ./tool/go install -race ./cmd/...
+    - name: build tests
+      run: ./tool/go test -race -exec=true ./...
+
+  cross: # cross-compile checks, build only.
+    strategy:
+      fail-fast: false # don't abort the entire matrix if one element fails
+      matrix:
+        include:
+          # Note: linux/amd64 is not in this matrix, because that goos/goarch is
+          # tested more exhaustively in the 'test' job above.
+          - goos: linux
+            goarch: arm64
+          - goos: linux
+            goarch: "386" # thanks yaml
+          - goos: linux
+            goarch: loong64
+          - goos: linux
+            goarch: arm
+            goarm: "5"
+          - goos: linux
+            goarch: arm
+            goarm: "7"
+          # macOS
+          - goos: darwin
+            goarch: amd64
+          - goos: darwin
+            goarch: arm64
+          # Windows
+          - goos: windows
+            goarch: amd64
+          - goos: windows
+            goarch: arm64
+          # BSDs
+          - goos: freebsd
+            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@v4
+    - name: Restore Cache
+      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
+        # 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 all
+      run: ./tool/go build ./cmd/...
+      env:
+        GOOS: ${{ matrix.goos }}
+        GOARCH: ${{ matrix.goarch }}
+        GOARM: ${{ matrix.goarm }}
+        CGO_ENABLED: "0"
+    - name: build tests
+      run: ./tool/go test -exec=true ./...
+      env:
+        GOOS: ${{ matrix.goos }}
+        GOARCH: ${{ matrix.goarch }}
+        CGO_ENABLED: "0"
+
+  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@v4
+    - name: build some
+      run: ./tool/go build ./ipn/... ./wgengine/ ./types/... ./control/controlclient
+      env:
+        GOOS: ios
+        GOARCH: arm64
+
+  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,
+    # only test the subset of android that our past smoke test checked.
+    runs-on: ubuntu-22.04
+    steps:
+    - name: checkout
+      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/interfaces ./wgengine/router/ ./tailcfg/ ./types/logger/ ./net/dns ./hostinfo ./version
+      env:
+        GOOS: android
+        GOARCH: arm64
+
+  wasm: # builds tsconnect, which is the only wasm build we support
+    runs-on: ubuntu-22.04
+    steps:
+    - name: checkout
+      uses: actions/checkout@v4
+    - name: Restore Cache
+      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
+        # 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 }}-go-2-${{ hashFiles('**/go.sum') }}-${{ github.run_id }}
+        restore-keys: |
+          ${{ github.job }}-${{ runner.os }}-go-2-${{ hashFiles('**/go.sum') }}
+          ${{ github.job }}-${{ runner.os }}-go-2-
+    - name: build tsconnect client
+      run: ./tool/go build ./cmd/tsconnect/wasm ./cmd/tailscale/cli
+      env:
+        GOOS: js
+        GOARCH: wasm
+    - name: build tsconnect server
+      # Note, no GOOS/GOARCH in env on this build step, we're running a build
+      # tool that handles the build itself.
+      run: |
+        ./tool/go run ./cmd/tsconnect --fast-compression build
+        ./tool/go run ./cmd/tsconnect --fast-compression build-pkg
+
+  tailscale_go: # Subset of tests that depend on our custom Go toolchain.
+    runs-on: ubuntu-22.04
+    steps:
+    - name: checkout
+      uses: actions/checkout@v4
+    - name: test tailscale_go
+      run: ./tool/go test -tags=tailscale_go,ts_enable_sockstats ./net/sockstats/...
+
+
+  fuzz:
+    # This target periodically breaks (see TS_FUZZ_CURRENTLY_BROKEN at the top
+    # of the file), so it's more complex than usual: the 'build fuzzers' step
+    # might fail, and depending on the value of 'TS_FUZZ_CURRENTLY_BROKEN', that
+    # might or might not be fine. The steps after the build figure out whether
+    # the success/failure is expected, and appropriately pass/fail the job
+    # overall accordingly.
+    #
+    # Practically, this means that all steps after 'build fuzzers' must have an
+    # explicit 'if' condition, because the default condition for steps is
+    # 'success()', meaning "only run this if no previous steps failed".
+    if: github.event_name == 'pull_request'
+    runs-on: ubuntu-22.04
+    steps:
+    - name: build fuzzers
+      id: build
+      uses: google/oss-fuzz/infra/cifuzz/actions/build_fuzzers@master
+      # continue-on-error makes steps.build.conclusion be 'success' even if
+      # steps.build.outcome is 'failure'. This means this step does not
+      # contribute to the job's overall pass/fail evaluation.
+      continue-on-error: true
+      with:
+       oss-fuzz-project-name: 'tailscale'
+       dry-run: false
+       language: go
+    - name: report unexpectedly broken fuzz build
+      if: steps.build.outcome == 'failure' && env.TS_FUZZ_CURRENTLY_BROKEN != 'true'
+      run: |
+        echo "fuzzer build failed, see above for why"
+        echo "if the failure is due to OSS-Fuzz not being on the latest Go yet,"
+        echo "set TS_FUZZ_CURRENTLY_BROKEN=true in .github/workflows/test.yml"
+        echo "to temporarily disable fuzzing until OSS-Fuzz works again."
+        exit 1
+    - name: report unexpectedly working fuzz build
+      if: steps.build.outcome == 'success' && env.TS_FUZZ_CURRENTLY_BROKEN == 'true'
+      run: |
+        echo "fuzzer build succeeded, but we expect it to be broken"
+        echo "please set TS_FUZZ_CURRENTLY_BROKEN=false in .github/workflows/test.yml"
+        echo "to reenable fuzz testing"
+        exit 1
+    - name: run fuzzers
+      id: run
+      # Run the fuzzers whenever they're able to build, even if we're going to
+      # report a failure because TS_FUZZ_CURRENTLY_BROKEN is set to the wrong
+      # value.
+      if: steps.build.outcome == 'success'
+      uses: google/oss-fuzz/infra/cifuzz/actions/run_fuzzers@master
+      with:
+        oss-fuzz-project-name: 'tailscale'
+        fuzz-seconds: 300
+        dry-run: false
+        language: go
+    - name: upload crash
+      uses: actions/upload-artifact@v3
+      if: steps.run.outcome != 'success' && steps.build.outcome == 'success'
+      with:
+        name: artifacts
+        path: ./out/artifacts
+
+  depaware:
+    runs-on: ubuntu-22.04
+    steps:
+    - name: checkout
+      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
+
+  go_generate:
+    runs-on: ubuntu-22.04
+    steps:
+    - name: checkout
+      uses: actions/checkout@v4
+    - name: check that 'go generate' is clean
+      run: |
+        pkgs=$(./tool/go list ./... | grep -Ev 'dnsfallback|k8s-operator')
+        ./tool/go generate $pkgs
+        echo
+        echo
+        git diff --name-only --exit-code || (echo "The files above need updating. Please run 'go generate'."; exit 1)
+
+  go_mod_tidy:
+    runs-on: ubuntu-22.04
+    steps:
+    - name: checkout
+      uses: actions/checkout@v4
+    - name: check that 'go mod tidy' is clean
+      run: |
+        ./tool/go mod tidy
+        echo
+        echo
+        git diff --name-only --exit-code || (echo "Please run 'go mod tidy'."; exit 1)
+
+  licenses:
+    runs-on: ubuntu-22.04
+    steps:
+    - name: checkout
+      uses: actions/checkout@v4
+    - name: check licenses
+      run: ./scripts/check_license_headers.sh .
+
+  staticcheck:
+    runs-on: ubuntu-22.04
+    strategy:
+      fail-fast: false # don't abort the entire matrix if one element fails
+      matrix:
+        goos: ["linux", "windows", "darwin"]
+        goarch: ["amd64"]
+        include:
+          - goos: "windows"
+            goarch: "386"
+    steps:
+    - name: checkout
+      uses: actions/checkout@v4
+    - name: install staticcheck
+      run: GOBIN=~/.local/bin ./tool/go install honnef.co/go/tools/cmd/staticcheck
+    - name: run staticcheck
+      run: |
+        export GOROOT=$(./tool/go env GOROOT)
+        export PATH=$GOROOT/bin:$PATH
+        staticcheck -- $(./tool/go list ./... | grep -v tempfork)
+      env:
+        GOOS: ${{ matrix.goos }}
+        GOARCH: ${{ matrix.goarch }}
+
+  notify_slack:
+    if: always()
+    # Any of these jobs failing causes a slack notification.
+    needs: 
+      - android
+      - test
+      - windows
+      - vm
+      - cross
+      - ios
+      - wasm
+      - tailscale_go
+      - fuzz
+      - depaware
+      - go_generate
+      - go_mod_tidy
+      - licenses
+      - staticcheck
+    runs-on: ubuntu-22.04
+    steps:
+    - name: notify  
+      # Only notify slack for merged commits, not PR failures.
+      #
+      # It may be tempting to move this condition into the job's 'if' block, but
+      # don't: Github only collapses the test list into "everything is OK" if
+      # all jobs succeeded. A skipped job results in the list staying expanded.
+      # 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: ruby/action-slack@v3.2.1
+      with:
+        payload: |
+          {
+            "attachments": [{
+              "title": "Failure: ${{ github.workflow }}",
+              "title_link": "https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks",         
+              "text": "${{ github.repository }}@${{ github.ref_name }}: <https://github.com/${{ github.repository }}/commit/${{ github.sha }}|${{ github.sha }}>",
+              "fields": [{ "value": ${{ toJson(github.event.head_commit.message) }}, "short": false }],
+              "footer": "${{ github.event.head_commit.committer.name }} at ${{ github.event.head_commit.timestamp }}",
+              "color": "danger"
+            }]
+          }
+      env:
+        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+
+  check_mergeability:
+    if: always()
+    runs-on: ubuntu-22.04
+    needs:
+      - android
+      - test
+      - windows
+      - vm
+      - cross
+      - ios
+      - wasm
+      - tailscale_go
+      - fuzz
+      - depaware
+      - go_generate
+      - go_mod_tidy
+      - licenses
+      - staticcheck
+    steps:
+    - name: Decide if change is okay to merge
+      if: github.event_name != 'push'
+      uses: re-actors/alls-green@release/v1
+      with:
+        jobs: ${{ toJSON(needs) }}

.github/workflows/update-flake.yml

@@ -0,0 +1,49 @@
+name: update-flake
+
+on:
+  # run action when a change lands in the main branch which updates go.mod. Also
+  # allow manual triggering.
+  push:
+    branches:
+      - main
+    paths:
+      - go.mod
+      - .github/workflows/update-flakes.yml
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  update-flake:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Run update-flakes
+        run: ./update-flake.sh
+
+      - 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: Flakes Updater <noreply+flakes-updater@tailscale.com>
+          committer: Flakes Updater <noreply+flakes-updater@tailscale.com>
+          branch: flakes
+          commit-message: "go.mod.sri: update SRI hash for go.mod changes"
+          title: "go.mod.sri: update SRI hash for go.mod changes"
+          body: Triggered by ${{ github.repository }}@${{ github.sha }}
+          signoff: true
+          delete-branch: true
+          reviewers: danderson

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

@@ -0,0 +1,52 @@
+name: update-webclient-prebuilt
+
+on:
+  # manually triggered
+  workflow_dispatch:
+
+concurrency:
+  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  update-webclient-prebuilt:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+
+      - name: Run go get
+        run: |
+          ./tool/go version # build gocross if needed using regular GOPROXY
+          GOPROXY=direct ./tool/go get github.com/tailscale/web-client-prebuilt
+          ./tool/go mod tidy
+
+      - name: Get access token
+        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_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@284f54f989303d2699d373481a0cfa13ad5a6666 #v5.0.1
+        with:
+          token: ${{ steps.generate-token.outputs.token }}
+          author: OSS Updater <noreply+oss-updater@tailscale.com>
+          committer: OSS Updater <noreply+oss-updater@tailscale.com>
+          branch: actions/update-webclient-prebuilt
+          commit-message: "go.mod: update web-client-prebuilt module"
+          title: "go.mod: update web-client-prebuilt module"
+          body: Triggered by ${{ github.repository }}@${{ github.sha }}
+          signoff: true
+          delete-branch: true
+          reviewers: ${{ github.triggering_actor }}
+
+      - name: Summary
+        if: ${{ steps.pull-request.outputs.pull-request-number }}
+        run: echo "${{ steps.pull-request.outputs.pull-request-operation}} ${{ steps.pull-request.outputs.pull-request-url }}" >> $GITHUB_STEP_SUMMARY

.github/workflows/vm.yml

@@ -1,46 +0,0 @@
-name: VM
-
-on:
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  ubuntu2004-LTS-cloud-base:
-    runs-on: [ self-hosted, linux, vm ]
-
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-
-    steps:
-      - name: Set GOPATH
-        run: echo "GOPATH=$HOME/go" >> $GITHUB_ENV
-
-      - name: Set up Go
-        uses: actions/setup-go@v3
-        with:
-          go-version: 1.18
-
-      - name: Checkout Code
-        uses: actions/checkout@v3
-
-      - name: Run VM tests
-        run: go test ./tstest/integration/vms -v -no-s3 -run-vm-tests -run=TestRunUbuntu2004
-        env:
-          HOME: "/tmp"
-          TMPDIR: "/tmp"
-          XDG_CACHE_HOME: "/var/lib/ghrunner/cache"
-
-      - uses: k0kubun/action-slack@v2.0.0
-        with:
-          payload: |
-            {
-              "attachments": [{
-                "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                        "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                        "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-                "color": "danger"
-              }]
-            }
-        env:
-          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-        if: failure() && github.event_name == 'push'

.github/workflows/webclient.yml

@@ -0,0 +1,40 @@
+name: webclient
+on:
+  workflow_dispatch:
+  # For now, only run on requests, not the main branches.
+  pull_request:
+    branches:
+      - "*"
+    paths:
+      - "client/web/**"
+      - ".github/workflows/webclient.yml"
+      - "!**.md"
+  # TODO(soniaappasamy): enable for main branch after an initial waiting period.
+  #push:
+  #  branches:
+  #    - main
+
+concurrency:
+  group: ${{ github.workflow }}-$${{ github.head_ref || github.run_id }}
+  cancel-in-progress: true
+
+jobs:
+  webclient:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Check out code
+        uses: actions/checkout@v4
+      - name: Install deps
+        run: ./tool/yarn --cwd client/web
+      - name: Run lint
+        run: ./tool/yarn --cwd client/web run --silent lint
+      - name: Run test
+        run: ./tool/yarn --cwd client/web run --silent test
+      - name: Run formatter check
+        run: |
+          ./tool/yarn --cwd client/web run --silent format-check || ( \
+            echo "Run this command on your local device to fix the error:" && \
+            echo "" && \
+            echo "  ./tool/yarn --cwd client/web format" && \
+            echo "" && exit 1)

.github/workflows/windows-race.yml

@@ -1,77 +0,0 @@
-name: Windows race
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  test:
-    runs-on: windows-latest
-
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-
-    steps:
-
-    - name: Install Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18.x
-
-    - name: Checkout code
-      uses: actions/checkout@v3
-
-    - name: Restore Cache
-      uses: actions/cache@v3
-      with:
-        # Note: unlike some 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: |
-          ~/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).
-        # The -race- here ensures that non-race builds and race builds do not
-        # overwrite each others cache, as while they share some files, they
-        # differ in most by volume (build cache).
-        # TODO(raggi): add a go version here.
-        key: ${{ runner.os }}-go-2-race-${{ hashFiles('**/go.sum') }}
-
-    - name: Print toolchain details
-      run: gcc -v
-
-    # There is currently an issue in the race detector in Go on Windows when
-    # used with a newer version of GCC.
-    # See https://github.com/tailscale/tailscale/issues/4926.
-    - name: Downgrade MinGW
-      shell: bash
-      run: |
-        choco install mingw --version 10.2.0 --allow-downgrade
-
-    - name: Test with -race flag
-      # Don't use -bench=. -benchtime=1x.
-      # Somewhere in the layers (powershell?)
-      # the equals signs cause great confusion.
-      run: go test -race -bench . -benchtime 1x ./...
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'
-

.github/workflows/windows.yml

@@ -1,63 +0,0 @@
-name: Windows
-
-on:
-  push:
-    branches:
-      - main
-  pull_request:
-    branches:
-      - '*'
-
-jobs:
-  test:
-    runs-on: windows-latest
-
-    if: "!contains(github.event.head_commit.message, '[ci skip]')"
-
-    steps:
-
-    - name: Install Go
-      uses: actions/setup-go@v3
-      with:
-        go-version: 1.18.x
-
-    - name: Checkout code
-      uses: actions/checkout@v3
-
-    - name: Restore Cache
-      uses: actions/cache@v3
-      with:
-        # Note: unlike some 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: |
-          ~/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).
-        # TODO(raggi): add a go version here.
-        key: ${{ runner.os }}-go-2-${{ hashFiles('**/go.sum') }}
-
-    - name: Test
-      # Don't use -bench=. -benchtime=1x.
-      # Somewhere in the layers (powershell?)
-      # the equals signs cause great confusion.
-      run: go test -bench . -benchtime 1x ./...
-
-    - uses: k0kubun/action-slack@v2.0.0
-      with:
-        payload: |
-          {
-            "attachments": [{
-              "text": "${{ job.status }}: ${{ github.workflow }} <https://github.com/${{ github.repository }}/commit/${{ github.sha }}/checks|${{ env.COMMIT_DATE }} #${{ env.COMMIT_NUMBER_OF_DAY }}> " +
-                      "(<https://github.com/${{ github.repository }}/commit/${{ github.sha }}|" + "${{ github.sha }}".substring(0, 10) + ">) " +
-                      "of ${{ github.repository }}@" + "${{ github.ref }}".split('/').reverse()[0] + " by ${{ github.event.head_commit.committer.name }}",
-              "color": "danger"
-            }]
-          }
-      env:
-        SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
-      if: failure() && github.event_name == 'push'
-

.gitignore

@@ -22,3 +22,23 @@ cmd/tailscaled/tailscaled
 # direnv config, this may be different for other people so it's probably safer
 # to make this nonspecific.
 .envrc
+
+# Ignore personal VS Code settings
+.vscode/
+
+# Support personal project-specific GOPATH
+.gopath/
+
+# Ignore nix build result path
+/result
+
+# Ignore direnv nix-shell environment cache
+.direnv/
+
+# Ignore web client node modules
+.vite/
+client/web/node_modules
+client/web/build/assets
+
+/gocross
+/dist

.golangci.yml

@@ -0,0 +1,104 @@
+linters:
+  # Don't enable any linters by default; just the ones that we explicitly
+  # enable in the list below.
+  disable-all: true
+  enable:
+    - bidichk
+    - gofmt
+    - goimports
+    - govet
+    - misspell
+    - revive
+
+# Configuration for how we run golangci-lint
+run:
+  timeout: 5m
+
+issues:
+  # Excluding configuration per-path, per-linter, per-text and per-source
+  exclude-rules:
+    # These are forks of an upstream package and thus are exempt from stylistic
+    # changes that would make pulling in upstream changes harder.
+    - path: tempfork/.*\.go
+      text: "File is not `gofmt`-ed with `-s` `-r 'interface{} -> any'`"
+    - path: util/singleflight/.*\.go
+      text: "File is not `gofmt`-ed with `-s` `-r 'interface{} -> any'`"
+
+# 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:
+      - asmdecl
+      - assign
+      - atomic
+      - bools
+      - buildtag
+      - cgocall
+      - copylocks
+      - deepequalerrors
+      - errorsas
+      - framepointer
+      - httpresponse
+      - ifaceassert
+      - loopclosure
+      - lostcancel
+      - nilfunc
+      - nilness
+      - printf
+      - reflectvaluecompare
+      - shift
+      - sigchanyzer
+      - sortslice
+      - stdmethods
+      - stringintconv
+      - structtag
+      - testinggoroutine
+      - tests
+      - unmarshal
+      - unreachable
+      - unsafeptr
+      - unusedresult
+    settings:
+      printf:
+        # List of print function names to check (in addition to default)
+        funcs:
+          - github.com/tailscale/tailscale/types/logger.Discard
+          # NOTE(andrew-d): this doesn't currently work because the printf
+          # analyzer doesn't support type declarations
+          #- github.com/tailscale/tailscale/types/logger.Logf
+
+  misspell:
+
+  revive:
+    enable-all-rules: false
+    ignore-generated-header: true
+    rules:
+      - name: atomic
+      - name: context-keys-type
+      - name: defer
+        arguments: [[
+          # Calling 'recover' at the time a defer is registered (i.e. "defer recover()") has no effect.
+          "immediate-recover",
+          # Calling 'recover' outside of a deferred function has no effect
+          "recover",
+          # Returning values from a deferred function has no effect
+          "return",
+        ]]
+      - name: duplicated-imports
+      - name: errorf
+      - name: string-of-int
+      - name: time-equal
+      - name: unconditional-recursion
+      - name: useless-break
+      - name: waitgroup-by-value

ALPINE.txt

@@ -1 +1 @@
-3.16
+3.18

CODEOWNERS

@@ -0,0 +1 @@
+/tailcfg/ @tailscale/control-protocol-owners

Dockerfile

@@ -1,6 +1,5 @@
-# Copyright (c) 2020 Tailscale Inc & AUTHORS All rights reserved.
-# Use of this source code is governed by a BSD-style
-# license that can be found in the LICENSE file.
+# Copyright (c) Tailscale Inc & AUTHORS
+# SPDX-License-Identifier: BSD-3-Clause
 
 ############################################################################
 #
@@ -32,7 +31,7 @@
 #     $ docker exec tailscaled tailscale status
 
 
-FROM golang:1.18-alpine AS build-env
+FROM golang:1.22-alpine AS build-env
 
 WORKDIR /go/src/tailscale
 
@@ -48,8 +47,7 @@ RUN go install \
     golang.org/x/crypto/ssh \
     golang.org/x/crypto/acme \
     nhooyr.io/websocket \
-    github.com/mdlayher/netlink \
-    golang.zx2c4.com/wireguard/device
+    github.com/mdlayher/netlink
 
 COPY . .
 
@@ -63,13 +61,15 @@ ENV VERSION_GIT_HASH=$VERSION_GIT_HASH
 ARG TARGETARCH
 
 RUN GOARCH=$TARGETARCH go install -ldflags="\
-      -X tailscale.com/version.Long=$VERSION_LONG \
-      -X tailscale.com/version.Short=$VERSION_SHORT \
-      -X tailscale.com/version.GitCommit=$VERSION_GIT_HASH" \
-      -v ./cmd/tailscale ./cmd/tailscaled
+      -X tailscale.com/version.longStamp=$VERSION_LONG \
+      -X tailscale.com/version.shortStamp=$VERSION_SHORT \
+      -X tailscale.com/version.gitCommitStamp=$VERSION_GIT_HASH" \
+      -v ./cmd/tailscale ./cmd/tailscaled ./cmd/containerboot
 
-FROM alpine:3.16
+FROM alpine:3.18
 RUN apk add --no-cache ca-certificates iptables iproute2 ip6tables
 
 COPY --from=build-env /go/bin/* /usr/local/bin/
-COPY --from=build-env /go/src/tailscale/docs/k8s/run.sh /usr/local/bin/
+# For compat with the previous run.sh, although ideally you should be
+# using build_docker.sh which sets an entrypoint for the image.
+RUN mkdir /tailscale && ln -s /usr/local/bin/containerboot /tailscale/run.sh

Dockerfile.base

@@ -1,6 +1,5 @@
-# Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
-# Use of this source code is governed by a BSD-style
-# license that can be found in the LICENSE file.
+# Copyright (c) Tailscale Inc & AUTHORS
+# SPDX-License-Identifier: BSD-3-Clause
 
-FROM alpine:3.16
-RUN apk add --no-cache ca-certificates iptables iproute2 ip6tables
+FROM alpine:3.18
+RUN apk add --no-cache ca-certificates iptables iproute2 ip6tables iputils

LICENSE

@@ -1,7 +1,6 @@
 BSD 3-Clause License
 
-Copyright (c) 2020 Tailscale & AUTHORS.
-All rights reserved.
+Copyright (c) 2020 Tailscale Inc & AUTHORS.
 
 Redistribution and use in source and binary forms, with or without
 modification, are permitted provided that the following conditions are met:

Makefile

@@ -1,49 +1,109 @@
 IMAGE_REPO ?= tailscale/tailscale
 SYNO_ARCH ?= "amd64"
 SYNO_DSM ?= "7"
+TAGS ?= "latest"
 
-usage:
-	echo "See Makefile"
+PLATFORM ?= "flyio" ## flyio==linux/amd64. Set to "" to build all platforms.
 
-vet:
+vet: ## Run go vet
 	./tool/go vet ./...
 
-tidy:
-	./tool/go mod tidy -compat=1.17
+tidy: ## Run go mod tidy
+	./tool/go mod tidy
 
-updatedeps:
-	./tool/go run github.com/tailscale/depaware --update tailscale.com/cmd/tailscaled
-	./tool/go run github.com/tailscale/depaware --update tailscale.com/cmd/tailscale
+lint: ## Run golangci-lint
+	./tool/go run github.com/golangci/golangci-lint/cmd/golangci-lint run
 
-depaware:
-	./tool/go run github.com/tailscale/depaware --check tailscale.com/cmd/tailscaled
-	./tool/go run github.com/tailscale/depaware --check tailscale.com/cmd/tailscale
+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 \
+		tailscale.com/cmd/tailscaled \
+		tailscale.com/cmd/tailscale \
+		tailscale.com/cmd/derper \
+		tailscale.com/cmd/stund
 
-buildwindows:
+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 \
+		tailscale.com/cmd/tailscaled \
+		tailscale.com/cmd/tailscale \
+		tailscale.com/cmd/derper \
+		tailscale.com/cmd/stund
+
+buildwindows: ## Build tailscale CLI for windows/amd64
 	GOOS=windows GOARCH=amd64 ./tool/go install tailscale.com/cmd/tailscale tailscale.com/cmd/tailscaled
 
-build386:
+build386: ## Build tailscale CLI for linux/386
 	GOOS=linux GOARCH=386 ./tool/go install tailscale.com/cmd/tailscale tailscale.com/cmd/tailscaled
 
-buildlinuxarm:
+buildlinuxarm: ## Build tailscale CLI for linux/arm
 	GOOS=linux GOARCH=arm ./tool/go install tailscale.com/cmd/tailscale tailscale.com/cmd/tailscaled
 
-buildmultiarchimage:
+buildwasm: ## Build tailscale CLI for js/wasm
+	GOOS=js GOARCH=wasm ./tool/go install ./cmd/tsconnect/wasm ./cmd/tailscale/cli
+
+buildplan9:
+	GOOS=plan9 GOARCH=amd64 ./tool/go install ./cmd/tailscale ./cmd/tailscaled
+
+buildlinuxloong64: ## Build tailscale CLI for linux/loong64
+	GOOS=linux GOARCH=loong64 ./tool/go install tailscale.com/cmd/tailscale tailscale.com/cmd/tailscaled
+
+buildmultiarchimage: ## Build (and optionally push) multiarch docker image
 	./build_docker.sh
 
-check: staticcheck vet depaware buildwindows build386 buildlinuxarm
+check: staticcheck vet depaware buildwindows build386 buildlinuxarm buildwasm ## Perform basic checks and compilation tests
 
-staticcheck:
+staticcheck: ## Run staticcheck.io checks
 	./tool/go run honnef.co/go/tools/cmd/staticcheck -- $$(./tool/go list ./... | grep -v tempfork)
 
-spk:
-	PATH="${PWD}/tool:${PATH}" ./tool/go run github.com/tailscale/tailscale-synology@main -o tailscale.spk --source=. --goarch=${SYNO_ARCH} --dsm-version=${SYNO_DSM}
+kube-generate-all: kube-generate-deepcopy ## Refresh generated files for Tailscale Kubernetes Operator
+	./tool/go generate ./cmd/k8s-operator
 
-spkall:
-	mkdir -p spks
-	PATH="${PWD}/tool:${PATH}" ./tool/go run github.com/tailscale/tailscale-synology@main -o spks --source=. --goarch=all --dsm-version=all
+# Tailscale operator watches Connector custom resources in a Kubernetes cluster
+# and caches them locally. Caching is done implicitly by controller-runtime
+# library (the middleware used by Tailscale operator to create kube control
+# loops). When a Connector resource is GET/LIST-ed from within our control loop,
+# the request goes through the cache. To ensure that cache contents don't get
+# modified by control loops, controller-runtime deep copies the requested
+# object. In order for this to work, Connector must implement deep copy
+# functionality so we autogenerate it here.
+# https://github.com/kubernetes-sigs/controller-runtime/blob/v0.16.3/pkg/cache/internal/cache_reader.go#L86-L89
+kube-generate-deepcopy: ## Refresh generated deepcopy functionality for Tailscale kube API types
+	./scripts/kube-deepcopy.sh
 
-pushspk: spk
+spk: ## Build synology package for ${SYNO_ARCH} architecture and ${SYNO_DSM} DSM version
+	./tool/go run ./cmd/dist build synology/dsm${SYNO_DSM}/${SYNO_ARCH}
+
+spkall: ## Build synology packages for all architectures and DSM versions
+	./tool/go run ./cmd/dist build synology
+
+pushspk: spk ## Push and install synology package on ${SYNO_HOST} host
 	echo "Pushing SPK to root@${SYNO_HOST} (env var SYNO_HOST) ..."
 	scp tailscale.spk root@${SYNO_HOST}:
 	ssh root@${SYNO_HOST} /usr/syno/bin/synopkg install tailscale.spk
+
+publishdevimage: ## Build and publish tailscale 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-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=client ./build_docker.sh
+
+publishdevoperator: ## Build and publish k8s-operator 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-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=operator ./build_docker.sh
+
+help: ## Show this help
+	@echo "\nSpecify a command. The choices are:\n"
+	@grep -hE '^[0-9a-zA-Z_-]+:.*?## .*$$' ${MAKEFILE_LIST} | awk 'BEGIN {FS = ":.*?## "}; {printf "  \033[0;36m%-20s\033[m %s\n", $$1, $$2}'
+	@echo ""
+.PHONY: help
+
+.DEFAULT_GOAL := help

README.md

@@ -6,27 +6,41 @@ Private WireGuard® networks made easy
 
 ## Overview
 
-This repository contains all the open source Tailscale client code and
-the `tailscaled` daemon and `tailscale` CLI tool. The `tailscaled`
-daemon runs on Linux, Windows and [macOS](https://tailscale.com/kb/1065/macos-variants/), and to varying degrees on FreeBSD, OpenBSD, and Darwin. (The Tailscale iOS and Android apps use this repo's code, but this repo doesn't contain the mobile GUI code.)
+This repository contains the majority of Tailscale's open source code.
+Notably, it includes the `tailscaled` daemon and
+the `tailscale` CLI tool. The `tailscaled` daemon runs on Linux, Windows,
+[macOS](https://tailscale.com/kb/1065/macos-variants/), and to varying degrees
+on FreeBSD and OpenBSD. The Tailscale iOS and Android apps use this repo's
+code, but this repo doesn't contain the mobile GUI code.
 
-The Android app is at https://github.com/tailscale/tailscale-android
+Other [Tailscale repos](https://github.com/orgs/tailscale/repositories) of note:
 
-The Synology package is at https://github.com/tailscale/tailscale-synology
+* the Android app is at https://github.com/tailscale/tailscale-android
+* the Synology package is at https://github.com/tailscale/tailscale-synology
+* the QNAP package is at https://github.com/tailscale/tailscale-qpkg
+* the Chocolatey packaging is at https://github.com/tailscale/tailscale-chocolatey
+
+For background on which parts of Tailscale are open source and why,
+see [https://tailscale.com/opensource/](https://tailscale.com/opensource/).
 
 ## Using
 
-We serve packages for a variety of distros at
-https://pkgs.tailscale.com .
+We serve packages for a variety of distros and platforms at
+[https://pkgs.tailscale.com](https://pkgs.tailscale.com/).
 
 ## Other clients
 
 The [macOS, iOS, and Windows clients](https://tailscale.com/download)
 use the code in this repository but additionally include small GUI
-wrappers that are not open source.
+wrappers. The GUI wrappers on non-open source platforms are themselves
+not open source.
 
 ## Building
 
+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.)
+
 ```
 go install tailscale.com/cmd/tailscale{,d}
 ```
@@ -43,11 +57,6 @@ If your distro has conventions that preclude the use of
 `build_dist.sh`, please do the equivalent of what it does in your
 distro's way, so that bug reports contain useful version information.
 
-We only guarantee to support the latest Go release and any Go beta or
-release candidate builds (currently Go 1.18) in module mode. It might
-work in earlier Go versions or in GOPATH mode, but we're making no
-effort to keep those working.
-
 ## Bugs
 
 Please file any issues about this code or the hosted service on
@@ -62,6 +71,9 @@ We require [Developer Certificate of
 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://github.com/golang/go/wiki/CommitMessage).
+
 ## About Us
 
 [Tailscale](https://tailscale.com/) is primarily developed by the

VERSION.txt

@@ -1 +1 @@
-1.29.0
+1.61.0

appc/appconnector.go

@@ -0,0 +1,402 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+// Package appc implements App Connectors.
+// An AppConnector provides DNS domain oriented routing of traffic. An App
+// Connector becomes a DNS server for a peer, authoritative for the set of
+// configured domains. DNS resolution of the target domain triggers dynamic
+// publication of routes to ensure that traffic to the domain is routed through
+// the App Connector.
+package appc
+
+import (
+	"context"
+	"net/netip"
+	"slices"
+	"strings"
+	"sync"
+
+	xmaps "golang.org/x/exp/maps"
+	"golang.org/x/net/dns/dnsmessage"
+	"tailscale.com/types/logger"
+	"tailscale.com/types/views"
+	"tailscale.com/util/dnsname"
+	"tailscale.com/util/execqueue"
+	"tailscale.com/util/mak"
+)
+
+// RouteAdvertiser is an interface that allows the AppConnector to advertise
+// newly discovered routes that need to be served through the AppConnector.
+type RouteAdvertiser interface {
+	// AdvertiseRoute adds one or more route advertisements skipping any that
+	// are already advertised.
+	AdvertiseRoute(...netip.Prefix) error
+
+	// UnadvertiseRoute removes any matching route advertisements.
+	UnadvertiseRoute(...netip.Prefix) error
+}
+
+// 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
+// addresses.
+// The AppConnectors responsibility inside tailscaled is to apply the routing
+// and domain configuration as supplied in the map response.
+// DNS requests for configured domains are observed. If the domains resolve to
+// routes not yet served by the AppConnector the local node configuration is
+// updated to advertise the new route.
+type AppConnector struct {
+	logf            logger.Logf
+	routeAdvertiser RouteAdvertiser
+
+	// mu guards the fields that follow
+	mu sync.Mutex
+
+	// domains is a map of lower case domain names with no trailing dot, to an
+	// ordered list of resolved IP addresses.
+	domains map[string][]netip.Addr
+
+	// controlRoutes is the list of routes that were last supplied by control.
+	controlRoutes []netip.Prefix
+
+	// wildcards is the list of domain strings that match subdomains.
+	wildcards []string
+
+	// queue provides ordering for update operations
+	queue execqueue.ExecQueue
+}
+
+// NewAppConnector creates a new AppConnector.
+func NewAppConnector(logf logger.Logf, routeAdvertiser RouteAdvertiser) *AppConnector {
+	return &AppConnector{
+		logf:            logger.WithPrefix(logf, "appc: "),
+		routeAdvertiser: routeAdvertiser,
+	}
+}
+
+// UpdateDomainsAndRoutes starts an asynchronous update of the configuration
+// given the new domains and routes.
+func (e *AppConnector) UpdateDomainsAndRoutes(domains []string, routes []netip.Prefix) {
+	e.queue.Add(func() {
+		// Add the new routes first.
+		e.updateRoutes(routes)
+		e.updateDomains(domains)
+	})
+}
+
+// UpdateDomains asynchronously replaces the current set of configured domains
+// with the supplied set of domains. Domains must not contain a trailing dot,
+// and should be lower case. If the domain contains a leading '*' label it
+// matches all subdomains of a domain.
+func (e *AppConnector) UpdateDomains(domains []string) {
+	e.queue.Add(func() {
+		e.updateDomains(domains)
+	})
+}
+
+// Wait waits for the currently scheduled asynchronous configuration changes to
+// complete.
+func (e *AppConnector) Wait(ctx context.Context) {
+	e.queue.Wait(ctx)
+}
+
+func (e *AppConnector) updateDomains(domains []string) {
+	e.mu.Lock()
+	defer e.mu.Unlock()
+
+	var oldDomains map[string][]netip.Addr
+	oldDomains, e.domains = e.domains, make(map[string][]netip.Addr, len(domains))
+	e.wildcards = e.wildcards[:0]
+	for _, d := range domains {
+		d = strings.ToLower(d)
+		if len(d) == 0 {
+			continue
+		}
+		if strings.HasPrefix(d, "*.") {
+			e.wildcards = append(e.wildcards, d[2:])
+			continue
+		}
+		e.domains[d] = oldDomains[d]
+		delete(oldDomains, d)
+	}
+
+	// Ensure that still-live wildcards addresses are preserved as well.
+	for d, addrs := range oldDomains {
+		for _, wc := range e.wildcards {
+			if dnsname.HasSuffix(d, wc) {
+				e.domains[d] = addrs
+				break
+			}
+		}
+	}
+	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
+// by control for UpdateRoutes are supplemental to the routes discovered by DNS resolution, but are
+// also more often whole ranges. UpdateRoutes will remove any single address routes that are now
+// covered by new ranges.
+func (e *AppConnector) updateRoutes(routes []netip.Prefix) {
+	e.mu.Lock()
+	defer e.mu.Unlock()
+
+	// If there was no change since the last update, no work to do.
+	if slices.Equal(e.controlRoutes, routes) {
+		return
+	}
+
+	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 {
+			for _, a := range addr {
+				if r.Contains(a) && netip.PrefixFrom(a, a.BitLen()) != r {
+					pfx := netip.PrefixFrom(a, a.BitLen())
+					toRemove = append(toRemove, pfx)
+					continue nextRoute
+				}
+			}
+		}
+	}
+
+	if err := e.routeAdvertiser.UnadvertiseRoute(toRemove...); err != nil {
+		e.logf("failed to unadvertise routes: %v: %v", toRemove, err)
+	}
+
+	e.controlRoutes = routes
+}
+
+// Domains returns the currently configured domain list.
+func (e *AppConnector) Domains() views.Slice[string] {
+	e.mu.Lock()
+	defer e.mu.Unlock()
+
+	return views.SliceOf(xmaps.Keys(e.domains))
+}
+
+// DomainRoutes returns a map of domains to resolved IP
+// addresses.
+func (e *AppConnector) DomainRoutes() map[string][]netip.Addr {
+	e.mu.Lock()
+	defer e.mu.Unlock()
+
+	drCopy := make(map[string][]netip.Addr)
+	for k, v := range e.domains {
+		drCopy[k] = append(drCopy[k], v...)
+	}
+
+	return drCopy
+}
+
+// ObserveDNSResponse is a callback invoked by the DNS resolver when a DNS
+// 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) {
+	var p dnsmessage.Parser
+	if _, err := p.Start(res); err != nil {
+		return
+	}
+	if err := p.SkipAllQuestions(); err != nil {
+		return
+	}
+
+	// cnameChain tracks a chain of CNAMEs for a given query in order to reverse
+	// a CNAME chain back to the original query for flattening. The keys are
+	// CNAME record targets, and the value is the name the record answers, so
+	// for www.example.com CNAME example.com, the map would contain
+	// ["example.com"] = "www.example.com".
+	var cnameChain map[string]string
+
+	// addressRecords is a list of address records found in the response.
+	var addressRecords map[string][]netip.Addr
+
+	for {
+		h, err := p.AnswerHeader()
+		if err == dnsmessage.ErrSectionDone {
+			break
+		}
+		if err != nil {
+			return
+		}
+
+		if h.Class != dnsmessage.ClassINET {
+			if err := p.SkipAnswer(); err != nil {
+				return
+			}
+			continue
+		}
+
+		switch h.Type {
+		case dnsmessage.TypeCNAME, dnsmessage.TypeA, dnsmessage.TypeAAAA:
+		default:
+			if err := p.SkipAnswer(); err != nil {
+				return
+			}
+			continue
+
+		}
+
+		domain := strings.TrimSuffix(strings.ToLower(h.Name.String()), ".")
+		if len(domain) == 0 {
+			continue
+		}
+
+		if h.Type == dnsmessage.TypeCNAME {
+			res, err := p.CNAMEResource()
+			if err != nil {
+				return
+			}
+			cname := strings.TrimSuffix(strings.ToLower(res.CNAME.String()), ".")
+			if len(cname) == 0 {
+				continue
+			}
+			mak.Set(&cnameChain, cname, domain)
+			continue
+		}
+
+		switch h.Type {
+		case dnsmessage.TypeA:
+			r, err := p.AResource()
+			if err != nil {
+				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
+			}
+			addr := netip.AddrFrom16(r.AAAA)
+			mak.Set(&addressRecords, domain, append(addressRecords[domain], addr))
+		default:
+			if err := p.SkipAnswer(); err != nil {
+				return
+			}
+			continue
+		}
+	}
+
+	e.mu.Lock()
+	defer e.mu.Unlock()
+
+	for domain, addrs := range addressRecords {
+		domain, isRouted := e.findRoutedDomainLocked(domain, cnameChain)
+
+		// domain and none of the CNAMEs in the chain are routed
+		if !isRouted {
+			continue
+		}
+
+		// advertise each address we have learned for the routed domain, that
+		// was not already known.
+		var toAdvertise []netip.Prefix
+		for _, addr := range addrs {
+			if !e.isAddrKnownLocked(domain, addr) {
+				toAdvertise = append(toAdvertise, netip.PrefixFrom(addr, addr.BitLen()))
+			}
+		}
+
+		e.logf("[v2] observed new routes for %s: %s", domain, toAdvertise)
+		e.scheduleAdvertisement(domain, toAdvertise...)
+	}
+}
+
+// starting from the given domain that resolved to an address, find it, or any
+// of the domains in the CNAME chain toward resolving it, that are routed
+// domains, returning the routed domain name and a bool indicating whether a
+// routed domain was found.
+// e.mu must be held.
+func (e *AppConnector) findRoutedDomainLocked(domain string, cnameChain map[string]string) (string, bool) {
+	var isRouted bool
+	for {
+		_, isRouted = e.domains[domain]
+		if isRouted {
+			break
+		}
+
+		// match wildcard domains
+		for _, wc := range e.wildcards {
+			if dnsname.HasSuffix(domain, wc) {
+				e.domains[domain] = nil
+				isRouted = true
+				break
+			}
+		}
+
+		next, ok := cnameChain[domain]
+		if !ok {
+			break
+		}
+		domain = next
+	}
+	return domain, isRouted
+}
+
+// isAddrKnownLocked returns true if the address is known to be associated with
+// the given domain. Known domain tables are updated for covered routes to speed
+// up future matches.
+// e.mu must be held.
+func (e *AppConnector) isAddrKnownLocked(domain string, addr netip.Addr) bool {
+	if e.hasDomainAddrLocked(domain, addr) {
+		return true
+	}
+	for _, route := range e.controlRoutes {
+		if route.Contains(addr) {
+			// record the new address associated with the domain for faster matching in subsequent
+			// requests and for diagnostic records.
+			e.addDomainAddrLocked(domain, addr)
+			return true
+		}
+	}
+	return false
+}
+
+// scheduleAdvertisement schedules an advertisement of the given address
+// associated with the given domain.
+func (e *AppConnector) scheduleAdvertisement(domain string, routes ...netip.Prefix) {
+	e.queue.Add(func() {
+		if err := e.routeAdvertiser.AdvertiseRoute(routes...); err != nil {
+			e.logf("failed to advertise routes for %s: %v: %v", domain, routes, err)
+			return
+		}
+		e.mu.Lock()
+		defer e.mu.Unlock()
+
+		for _, route := range routes {
+			if !route.IsSingleIP() {
+				continue
+			}
+			addr := route.Addr()
+			if !e.hasDomainAddrLocked(domain, addr) {
+				e.addDomainAddrLocked(domain, addr)
+				e.logf("[v2] advertised route for %v: %v", domain, addr)
+			}
+		}
+	})
+}
+
+// hasDomainAddrLocked returns true if the address has been observed in a
+// resolution of domain.
+func (e *AppConnector) hasDomainAddrLocked(domain string, addr netip.Addr) bool {
+	_, ok := slices.BinarySearchFunc(e.domains[domain], addr, compareAddr)
+	return ok
+}
+
+// addDomainAddrLocked adds the address to the list of addresses resolved for
+// domain and ensures the list remains sorted. Does not attempt to deduplicate.
+func (e *AppConnector) addDomainAddrLocked(domain string, addr netip.Addr) {
+	e.domains[domain] = append(e.domains[domain], addr)
+	slices.SortFunc(e.domains[domain], compareAddr)
+}
+
+func compareAddr(l, r netip.Addr) int {
+	return l.Compare(r)
+}

appc/appconnector_test.go

@@ -0,0 +1,312 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package appc
+
+import (
+	"context"
+	"net/netip"
+	"reflect"
+	"slices"
+	"testing"
+
+	xmaps "golang.org/x/exp/maps"
+	"golang.org/x/net/dns/dnsmessage"
+	"tailscale.com/appc/appctest"
+	"tailscale.com/util/mak"
+	"tailscale.com/util/must"
+)
+
+func TestUpdateDomains(t *testing.T) {
+	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)
+	}
+
+	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)
+	}
+
+	// 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) {
+	ctx := context.Background()
+	rc := &appctest.RouteCollector{}
+	a := NewAppConnector(t.Logf, rc)
+	a.updateDomains([]string{"*.example.com"})
+
+	// 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")})
+	}
+
+	// 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)
+
+	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 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) {
+	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)
+	}
+}
+
+func TestDomainRoutes(t *testing.T) {
+	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")},
+	}
+
+	if got := a.DomainRoutes(); !reflect.DeepEqual(got, want) {
+		t.Fatalf("DomainRoutes: got %v, want %v", got, want)
+	}
+}
+
+func TestObserveDNSResponse(t *testing.T) {
+	ctx := context.Background()
+	rc := &appctest.RouteCollector{}
+	a := NewAppConnector(t.Logf, rc)
+
+	// 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")}
+
+	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"})
+	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
+	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"))
+
+	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
+	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)
+	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) {
+	ctx := context.Background()
+	rc := &appctest.RouteCollector{}
+	a := NewAppConnector(t.Logf, rc)
+
+	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)
+	}
+
+	// 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)
+	}
+}
+
+// dnsResponse is a test helper that creates a DNS response buffer for the given domain and address
+func dnsResponse(domain, address string) []byte {
+	addr := netip.MustParseAddr(address)
+	b := dnsmessage.NewBuilder(nil, dnsmessage.Header{})
+	b.EnableCompression()
+	b.StartAnswers()
+	switch addr.BitLen() {
+	case 32:
+		b.AResource(
+			dnsmessage.ResourceHeader{
+				Name:  dnsmessage.MustNewName(domain),
+				Type:  dnsmessage.TypeA,
+				Class: dnsmessage.ClassINET,
+				TTL:   0,
+			},
+			dnsmessage.AResource{
+				A: addr.As4(),
+			},
+		)
+	case 128:
+		b.AAAAResource(
+			dnsmessage.ResourceHeader{
+				Name:  dnsmessage.MustNewName(domain),
+				Type:  dnsmessage.TypeAAAA,
+				Class: dnsmessage.ClassINET,
+				TTL:   0,
+			},
+			dnsmessage.AAAAResource{
+				AAAA: addr.As16(),
+			},
+		)
+	default:
+		panic("invalid address length")
+	}
+	return must.Get(b.Finish())
+}
+
+func dnsCNAMEResponse(address string, domains ...string) []byte {
+	addr := netip.MustParseAddr(address)
+	b := dnsmessage.NewBuilder(nil, dnsmessage.Header{})
+	b.EnableCompression()
+	b.StartAnswers()
+
+	if len(domains) >= 2 {
+		for i, domain := range domains[:len(domains)-1] {
+			b.CNAMEResource(
+				dnsmessage.ResourceHeader{
+					Name:  dnsmessage.MustNewName(domain),
+					Type:  dnsmessage.TypeCNAME,
+					Class: dnsmessage.ClassINET,
+					TTL:   0,
+				},
+				dnsmessage.CNAMEResource{
+					CNAME: dnsmessage.MustNewName(domains[i+1]),
+				},
+			)
+		}
+	}
+
+	domain := domains[len(domains)-1]
+
+	switch addr.BitLen() {
+	case 32:
+		b.AResource(
+			dnsmessage.ResourceHeader{
+				Name:  dnsmessage.MustNewName(domain),
+				Type:  dnsmessage.TypeA,
+				Class: dnsmessage.ClassINET,
+				TTL:   0,
+			},
+			dnsmessage.AResource{
+				A: addr.As4(),
+			},
+		)
+	case 128:
+		b.AAAAResource(
+			dnsmessage.ResourceHeader{
+				Name:  dnsmessage.MustNewName(domain),
+				Type:  dnsmessage.TypeAAAA,
+				Class: dnsmessage.ClassINET,
+				TTL:   0,
+			},
+			dnsmessage.AAAAResource{
+				AAAA: addr.As16(),
+			},
+		)
+	default:
+		panic("invalid address length")
+	}
+	return must.Get(b.Finish())
+}
+
+func prefixEqual(a, b netip.Prefix) bool {
+	return a == b
+}
+
+func prefixCompare(a, b netip.Prefix) int {
+	if a.Addr().Compare(b.Addr()) == 0 {
+		return a.Bits() - b.Bits()
+	}
+	return a.Addr().Compare(b.Addr())
+}

appc/appctest/appctest.go

@@ -0,0 +1,49 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package appctest
+
+import (
+	"net/netip"
+	"slices"
+)
+
+// RouteCollector is a test helper that collects the list of routes advertised
+type RouteCollector struct {
+	routes        []netip.Prefix
+	removedRoutes []netip.Prefix
+}
+
+func (rc *RouteCollector) AdvertiseRoute(pfx ...netip.Prefix) error {
+	rc.routes = append(rc.routes, pfx...)
+	return nil
+}
+
+func (rc *RouteCollector) UnadvertiseRoute(toRemove ...netip.Prefix) error {
+	routes := rc.routes
+	rc.routes = rc.routes[:0]
+	for _, r := range routes {
+		if !slices.Contains(toRemove, r) {
+			rc.routes = append(rc.routes, r)
+		} else {
+			rc.removedRoutes = append(rc.removedRoutes, r)
+		}
+	}
+	return nil
+}
+
+// RemovedRoutes returns the list of routes that were removed.
+func (rc *RouteCollector) RemovedRoutes() []netip.Prefix {
+	return rc.removedRoutes
+}
+
+// Routes returns the ordered list of routes that were added, including
+// possible duplicates.
+func (rc *RouteCollector) Routes() []netip.Prefix {
+	return rc.routes
+}
+
+func (rc *RouteCollector) SetRoutes(routes []netip.Prefix) error {
+	rc.routes = routes
+	return nil
+}

atomicfile/atomicfile.go

@@ -1,6 +1,5 @@
-// Copyright (c) 2019 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 // Package atomicfile contains code related to writing to filesystems
 // atomically.
@@ -9,16 +8,21 @@
 package atomicfile // import "tailscale.com/atomicfile"
 
 import (
-	"io/ioutil"
+	"fmt"
 	"os"
 	"path/filepath"
 	"runtime"
 )
 
-// WriteFile writes data to filename+some suffix, then renames it
-// into filename.
+// WriteFile writes data to filename+some suffix, then renames it into filename.
+// 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) {
-	f, err := ioutil.TempFile(filepath.Dir(filename), filepath.Base(filename)+".tmp")
+	fi, err := os.Stat(filename)
+	if err == nil && !fi.Mode().IsRegular() {
+		return fmt.Errorf("%s already exists and is not a regular file", filename)
+	}
+	f, err := os.CreateTemp(filepath.Dir(filename), filepath.Base(filename)+".tmp")
 	if err != nil {
 		return err
 	}

atomicfile/atomicfile_test.go

@@ -0,0 +1,47 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+//go:build !js && !windows
+
+package atomicfile
+
+import (
+	"net"
+	"os"
+	"path/filepath"
+	"runtime"
+	"strings"
+	"testing"
+)
+
+func TestDoesNotOverwriteIrregularFiles(t *testing.T) {
+	// Per tailscale/tailscale#7658 as one example, almost any imagined use of
+	// atomicfile.Write should likely not attempt to overwrite an irregular file
+	// such as a device node, socket, or named pipe.
+
+	const filename = "TestDoesNotOverwriteIrregularFiles"
+	var path string
+	// macOS private temp does not allow unix socket creation, but /tmp does.
+	if runtime.GOOS == "darwin" {
+		path = filepath.Join("/tmp", filename)
+		t.Cleanup(func() { os.Remove(path) })
+	} else {
+		path = filepath.Join(t.TempDir(), filename)
+	}
+
+	// The least troublesome thing to make that is not a file is a unix socket.
+	// Making a null device sadly requires root.
+	l, err := net.ListenUnix("unix", &net.UnixAddr{Name: path, Net: "unix"})
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer l.Close()
+
+	err = WriteFile(path, []byte("hello"), 0644)
+	if err == nil {
+		t.Fatal("expected error, got nil")
+	}
+	if !strings.Contains(err.Error(), "is not a regular file") {
+		t.Fatalf("unexpected error: %v", err)
+	}
+}

build_dist.sh

@@ -11,38 +11,42 @@
 
 set -eu
 
-IFS=".$IFS" read -r major minor patch <VERSION.txt
-git_hash=$(git rev-parse HEAD)
-if ! git diff-index --quiet HEAD; then
-	git_hash="${git_hash}-dirty"
-fi
-base_hash=$(git rev-list --max-count=1 HEAD -- VERSION.txt)
-change_count=$(git rev-list --count HEAD "^$base_hash")
-short_hash=$(echo "$git_hash" | cut -c1-9)
-
-if expr "$minor" : "[0-9]*[13579]$" >/dev/null; then
-	patch="$change_count"
-	change_suffix=""
-elif [ "$change_count" != "0" ]; then
-	change_suffix="-$change_count"
-else
-	change_suffix=""
+go="go"
+if [ -n "${TS_USE_TOOLCHAIN:-}" ]; then
+	go="./tool/go"
 fi
 
-long_suffix="$change_suffix-t$short_hash"
-MINOR="$major.$minor"
-SHORT="$MINOR.$patch"
-LONG="${SHORT}$long_suffix"
-GIT_HASH="$git_hash"
+eval `CGO_ENABLED=0 GOOS=$($go env GOHOSTOS) GOARCH=$($go env GOHOSTARCH) $go run ./cmd/mkversion`
 
 if [ "$1" = "shellvars" ]; then
 	cat <<EOF
-VERSION_MINOR="$MINOR"
-VERSION_SHORT="$SHORT"
-VERSION_LONG="$LONG"
-VERSION_GIT_HASH="$GIT_HASH"
+VERSION_MINOR="$VERSION_MINOR"
+VERSION_SHORT="$VERSION_SHORT"
+VERSION_LONG="$VERSION_LONG"
+VERSION_GIT_HASH="$VERSION_GIT_HASH"
 EOF
 	exit 0
 fi
 
-exec ./tool/go build -ldflags "-X tailscale.com/version.Long=${LONG} -X tailscale.com/version.Short=${SHORT} -X tailscale.com/version.GitCommit=${GIT_HASH}" "$@"
+tags=""
+ldflags="-X tailscale.com/version.longStamp=${VERSION_LONG} -X tailscale.com/version.shortStamp=${VERSION_SHORT}"
+
+# build_dist.sh arguments must precede go build arguments.
+while [ "$#" -gt 1 ]; do
+	case "$1" in
+	--extra-small)
+		shift
+		ldflags="$ldflags -w -s"
+		tags="${tags:+$tags,}ts_omit_aws,ts_omit_bird,ts_omit_tap,ts_omit_kube"
+		;;
+	--box)
+		shift
+		tags="${tags:+$tags,}ts_include_cli"
+		;;
+	*)
+		break
+		;;
+	esac
+done
+
+exec $go build ${tags:+-tags=$tags} -ldflags "$ldflags" "$@"

build_docker.sh

@@ -23,26 +23,55 @@ set -eu
 export PATH=$PWD/tool:$PATH
 
 eval $(./build_dist.sh shellvars)
+
+DEFAULT_TARGET="client"
 DEFAULT_TAGS="v${VERSION_SHORT},v${VERSION_MINOR}"
-DEFAULT_REPOS="tailscale/tailscale,ghcr.io/tailscale/tailscale"
-DEFAULT_BASE="ghcr.io/tailscale/alpine-base:3.16"
+DEFAULT_BASE="tailscale/alpine-base:3.18"
 
 PUSH="${PUSH:-false}"
-REPOS="${REPOS:-${DEFAULT_REPOS}}"
+TARGET="${TARGET:-${DEFAULT_TARGET}}"
 TAGS="${TAGS:-${DEFAULT_TAGS}}"
 BASE="${BASE:-${DEFAULT_BASE}}"
+PLATFORM="${PLATFORM:-}" # default to all platforms
 
-go run github.com/tailscale/mkctr \
-  --gopaths="\
-    tailscale.com/cmd/tailscale:/usr/local/bin/tailscale, \
-    tailscale.com/cmd/tailscaled:/usr/local/bin/tailscaled" \
-  --ldflags="\
-    -X tailscale.com/version.Long=${VERSION_LONG} \
-    -X tailscale.com/version.Short=${VERSION_SHORT} \
-    -X tailscale.com/version.GitCommit=${VERSION_GIT_HASH}" \
-  --files="docs/k8s/run.sh:/tailscale/run.sh" \
-  --base="${BASE}" \
-  --tags="${TAGS}" \
-  --repos="${REPOS}" \
-  --push="${PUSH}" \
-  /bin/sh /tailscale/run.sh
+case "$TARGET" in
+  client)
+    DEFAULT_REPOS="tailscale/tailscale"
+    REPOS="${REPOS:-${DEFAULT_REPOS}}"
+    go run github.com/tailscale/mkctr \
+      --gopaths="\
+        tailscale.com/cmd/tailscale:/usr/local/bin/tailscale, \
+        tailscale.com/cmd/tailscaled:/usr/local/bin/tailscaled, \
+        tailscale.com/cmd/containerboot:/usr/local/bin/containerboot" \
+      --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="${TAGS}" \
+      --repos="${REPOS}" \
+      --push="${PUSH}" \
+      --target="${PLATFORM}" \
+      /usr/local/bin/containerboot
+    ;;
+  operator)
+    DEFAULT_REPOS="tailscale/k8s-operator"
+    REPOS="${REPOS:-${DEFAULT_REPOS}}"
+    go run github.com/tailscale/mkctr \
+      --gopaths="tailscale.com/cmd/k8s-operator:/usr/local/bin/operator" \
+      --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="${TAGS}" \
+      --repos="${REPOS}" \
+      --push="${PUSH}" \
+      --target="${PLATFORM}" \
+      /usr/local/bin/operator
+    ;;
+  *)
+    echo "unknown target: $TARGET"
+    exit 1
+    ;;
+esac

chirp/chirp.go

@@ -1,6 +1,5 @@
-// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 // Package chirp implements a client to communicate with the BIRD Internet
 // Routing Daemon.
@@ -11,15 +10,37 @@ import (
 	"fmt"
 	"net"
 	"strings"
+	"time"
+)
+
+const (
+	// Maximum amount of time we should wait when reading a response from BIRD.
+	responseTimeout = 10 * time.Second
 )
 
 // New creates a BIRDClient.
 func New(socket string) (*BIRDClient, error) {
+	return newWithTimeout(socket, responseTimeout)
+}
+
+func newWithTimeout(socket string, timeout time.Duration) (_ *BIRDClient, err error) {
 	conn, err := net.Dial("unix", socket)
 	if err != nil {
 		return nil, fmt.Errorf("failed to connect to BIRD: %w", err)
 	}
-	b := &BIRDClient{socket: socket, conn: conn, scanner: bufio.NewScanner(conn)}
+	defer func() {
+		if err != nil {
+			conn.Close()
+		}
+	}()
+
+	b := &BIRDClient{
+		socket:  socket,
+		conn:    conn,
+		scanner: bufio.NewScanner(conn),
+		timeNow: time.Now,
+		timeout: timeout,
+	}
 	// Read and discard the first line as that is the welcome message.
 	if _, err := b.readResponse(); err != nil {
 		return nil, err
@@ -32,6 +53,8 @@ type BIRDClient struct {
 	socket  string
 	conn    net.Conn
 	scanner *bufio.Scanner
+	timeNow func() time.Time
+	timeout time.Duration
 }
 
 // Close closes the underlying connection to BIRD.
@@ -81,10 +104,15 @@ func (b *BIRDClient) EnableProtocol(protocol string) error {
 // 1 means ‘table entry’, 8 ‘runtime error’ and 9 ‘syntax error’.
 
 func (b *BIRDClient) exec(cmd string, args ...any) (string, error) {
+	if err := b.conn.SetWriteDeadline(b.timeNow().Add(b.timeout)); err != nil {
+		return "", err
+	}
 	if _, err := fmt.Fprintf(b.conn, cmd, args...); err != nil {
 		return "", err
 	}
-	fmt.Fprintln(b.conn)
+	if _, err := fmt.Fprintln(b.conn); err != nil {
+		return "", err
+	}
 	return b.readResponse()
 }
 
@@ -105,14 +133,20 @@ func hasResponseCode(s []byte) bool {
 }
 
 func (b *BIRDClient) readResponse() (string, error) {
+	// Set the read timeout before we start reading anything.
+	if err := b.conn.SetReadDeadline(b.timeNow().Add(b.timeout)); err != nil {
+		return "", err
+	}
+
 	var resp strings.Builder
 	var done bool
 	for !done {
 		if !b.scanner.Scan() {
-			return "", fmt.Errorf("reading response from bird failed: %q", resp.String())
-		}
-		if err := b.scanner.Err(); err != nil {
-			return "", err
+			if err := b.scanner.Err(); err != nil {
+				return "", err
+			}
+
+			return "", fmt.Errorf("reading response from bird failed (EOF): %q", resp.String())
 		}
 		out := b.scanner.Bytes()
 		if _, err := resp.Write(out); err != nil {

chirp/chirp_test.go

@@ -1,6 +1,5 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 package chirp
 
 import (
@@ -8,9 +7,12 @@ import (
 	"errors"
 	"fmt"
 	"net"
+	"os"
 	"path/filepath"
 	"strings"
+	"sync"
 	"testing"
+	"time"
 )
 
 type fakeBIRD struct {
@@ -103,9 +105,88 @@ func TestChirp(t *testing.T) {
 		t.Fatal(err)
 	}
 	if err := c.EnableProtocol("rando"); err == nil {
-		t.Fatalf("enabling %q succeded", "rando")
+		t.Fatalf("enabling %q succeeded", "rando")
 	}
 	if err := c.DisableProtocol("rando"); err == nil {
-		t.Fatalf("disabling %q succeded", "rando")
+		t.Fatalf("disabling %q succeeded", "rando")
+	}
+}
+
+type hangingListener struct {
+	net.Listener
+	t    *testing.T
+	done chan struct{}
+	wg   sync.WaitGroup
+	sock string
+}
+
+func newHangingListener(t *testing.T) *hangingListener {
+	sock := filepath.Join(t.TempDir(), "sock")
+	l, err := net.Listen("unix", sock)
+	if err != nil {
+		t.Fatal(err)
+	}
+	return &hangingListener{
+		Listener: l,
+		t:        t,
+		done:     make(chan struct{}),
+		sock:     sock,
+	}
+}
+
+func (hl *hangingListener) Stop() {
+	hl.Close()
+	close(hl.done)
+	hl.wg.Wait()
+}
+
+func (hl *hangingListener) listen() error {
+	for {
+		c, err := hl.Accept()
+		if err != nil {
+			if errors.Is(err, net.ErrClosed) {
+				return nil
+			}
+			return err
+		}
+		hl.wg.Add(1)
+		go hl.handle(c)
+	}
+}
+
+func (hl *hangingListener) handle(c net.Conn) {
+	defer hl.wg.Done()
+
+	// Write our fake first line of response so that we get into the read loop
+	fmt.Fprintln(c, "0001 BIRD 2.0.8 ready.")
+
+	ticker := time.NewTicker(2 * time.Second)
+	defer ticker.Stop()
+	for {
+		select {
+		case <-ticker.C:
+			hl.t.Logf("connection still hanging")
+		case <-hl.done:
+			return
+		}
+	}
+}
+
+func TestChirpTimeout(t *testing.T) {
+	fb := newHangingListener(t)
+	defer fb.Stop()
+	go fb.listen()
+
+	c, err := newWithTimeout(fb.sock, 500*time.Millisecond)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = c.EnableProtocol("tailscale")
+	if err == nil {
+		t.Fatal("got err=nil, want timeout")
+	}
+	if !os.IsTimeout(err) {
+		t.Fatalf("got err=%v, want os.IsTimeout(err)=true", err)
 	}
 }

client/tailscale/acl.go

@@ -1,9 +1,7 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
-//go:build go1.18
-// +build go1.18
+//go:build go1.19
 
 package tailscale
 
@@ -105,7 +103,7 @@ func (c *Client) ACL(ctx context.Context) (acl *ACL, err error) {
 // it as a string.
 // HuJSON is JSON with a few modifications to make it more human-friendly. The primary
 // changes are allowing comments and trailing comments. See the following links for more info:
-// https://tailscale.com/kb/1018/acls?q=acl#tailscale-acl-policy-format
+// https://tailscale.com/s/acl-format
 // https://github.com/tailscale/hujson
 func (c *Client) ACLHuJSON(ctx context.Context) (acl *ACLHuJSON, err error) {
 	// Format return errors to be descriptive.
@@ -152,8 +150,9 @@ 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   string   `json:"user"`
-	Errors []string `json:"errors"`
+	User     string   `json:"user,omitempty"`
+	Errors   []string `json:"errors,omitempty"`
+	Warnings []string `json:"warnings,omitempty"`
 }
 
 // ACLTestError is ErrResponse but with an extra field to account for ACLTestFailureSummary.
@@ -438,7 +437,7 @@ func (c *Client) ValidateACLJSON(ctx context.Context, source, dest string) (test
 		}
 	}()
 
-	tests := []ACLTest{ACLTest{User: source, Allow: []string{dest}}}
+	tests := []ACLTest{{User: source, Allow: []string{dest}}}
 	postData, err := json.Marshal(tests)
 	if err != nil {
 		return nil, err
@@ -459,7 +458,7 @@ func (c *Client) ValidateACLJSON(ctx context.Context, source, dest string) (test
 	}
 
 	if resp.StatusCode != http.StatusOK {
-		return nil, fmt.Errorf("control api responsed with %d status code", resp.StatusCode)
+		return nil, fmt.Errorf("control api responded with %d status code", resp.StatusCode)
 	}
 
 	// The test ran without fail

client/tailscale/apitype/apitype.go

@@ -1,19 +1,23 @@
-// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
-// Package apitype contains types for the Tailscale local API and control plane API.
+// Package apitype contains types for the Tailscale LocalAPI and control plane API.
 package apitype
 
 import "tailscale.com/tailcfg"
 
+// LocalAPIHost is the Host header value used by the LocalAPI.
+const LocalAPIHost = "local-tailscaled.sock"
+
 // 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 {
 	Node        *tailcfg.Node
 	UserProfile *tailcfg.UserProfile
 
-	// Caps are extra capabilities that the remote Node has to this node.
-	Caps []string `json:",omitempty"`
+	// CapMap is a map of capabilities to their values.
+	// See tailcfg.PeerCapMap and tailcfg.PeerCapability for details.
+	CapMap tailcfg.PeerCapMap
 }
 
 // FileTarget is a node to which files can be sent, and the PeerAPI
@@ -21,7 +25,7 @@ type WhoIsResponse struct {
 type FileTarget struct {
 	Node *tailcfg.Node
 
-	// PeerAPI is the http://ip:port URL base of the node's peer API,
+	// PeerAPI is the http://ip:port URL base of the node's PeerAPI,
 	// without any path (not even a single slash).
 	PeerAPIURL string
 }
@@ -30,3 +34,18 @@ type WaitingFile struct {
 	Name string
 	Size int64
 }
+
+// SetPushDeviceTokenRequest is the body POSTed to the LocalAPI endpoint /set-device-token.
+type SetPushDeviceTokenRequest struct {
+	// PushDeviceToken is the iOS/macOS APNs device token (and any future Android equivalent).
+	PushDeviceToken string
+}
+
+// ReloadConfigResponse is the response to a LocalAPI reload-config request.
+//
+// There are three possible outcomes: (false, "") if no config mode in use,
+// (true, "") on success, or (false, "error message") on failure.
+type ReloadConfigResponse struct {
+	Reloaded bool   // whether the config was reloaded
+	Err      string // any error message
+}

client/tailscale/apitype/controltype.go

@@ -1,17 +1,16 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 package apitype
 
 type DNSConfig struct {
-	Resolvers         []DNSResolver            `json:"resolvers"`
-	FallbackResolvers []DNSResolver            `json:"fallbackResolvers"`
-	Routes            map[string][]DNSResolver `json:"routes"`
-	Domains           []string                 `json:"domains"`
-	Nameservers       []string                 `json:"nameservers"`
-	Proxied           bool                     `json:"proxied"`
-	PerDomain         bool                     `json:",omitempty"`
+	Resolvers          []DNSResolver            `json:"resolvers"`
+	FallbackResolvers  []DNSResolver            `json:"fallbackResolvers"`
+	Routes             map[string][]DNSResolver `json:"routes"`
+	Domains            []string                 `json:"domains"`
+	Nameservers        []string                 `json:"nameservers"`
+	Proxied            bool                     `json:"proxied"`
+	TempCorpIssue13969 string                   `json:"TempCorpIssue13969,omitempty"`
 }
 
 type DNSResolver struct {

client/tailscale/devices.go

@@ -1,9 +1,7 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
-//go:build go1.18
-// +build go1.18
+//go:build go1.19
 
 package tailscale
 
@@ -14,7 +12,6 @@ import (
 	"fmt"
 	"net/http"
 	"net/url"
-	"strings"
 
 	"tailscale.com/types/opt"
 )
@@ -46,17 +43,18 @@ type Device struct {
 	Name      string   `json:"name"`
 	Hostname  string   `json:"hostname"`
 
-	ClientVersion     string `json:"clientVersion"`   // Empty for external devices.
-	UpdateAvailable   bool   `json:"updateAvailable"` // Empty for external devices.
-	OS                string `json:"os"`
-	Created           string `json:"created"` // Empty for external devices.
-	LastSeen          string `json:"lastSeen"`
-	KeyExpiryDisabled bool   `json:"keyExpiryDisabled"`
-	Expires           string `json:"expires"`
-	Authorized        bool   `json:"authorized"`
-	IsExternal        bool   `json:"isExternal"`
-	MachineKey        string `json:"machineKey"` // Empty for external devices.
-	NodeKey           string `json:"nodeKey"`
+	ClientVersion     string   `json:"clientVersion"`   // Empty for external devices.
+	UpdateAvailable   bool     `json:"updateAvailable"` // Empty for external devices.
+	OS                string   `json:"os"`
+	Tags              []string `json:"tags"`
+	Created           string   `json:"created"` // Empty for external devices.
+	LastSeen          string   `json:"lastSeen"`
+	KeyExpiryDisabled bool     `json:"keyExpiryDisabled"`
+	Expires           string   `json:"expires"`
+	Authorized        bool     `json:"authorized"`
+	IsExternal        bool     `json:"isExternal"`
+	MachineKey        string   `json:"machineKey"` // Empty for external devices.
+	NodeKey           string   `json:"nodeKey"`
 
 	// BlocksIncomingConnections is configured via the device's
 	// Tailscale client preferences. This field is only reported
@@ -73,6 +71,17 @@ type Device struct {
 	AdvertisedRoutes []string `json:"advertisedRoutes"` // Empty for external devices.
 
 	ClientConnectivity *ClientConnectivity `json:"clientConnectivity"`
+
+	// PostureIdentity contains extra identifiers collected from the device when
+	// the tailnet has the device posture identification features enabled. If
+	// Tailscale have attempted to collect this from the device but it has not
+	// opted in, PostureIdentity will have Disabled=true.
+	PostureIdentity *DevicePostureIdentity `json:"postureIdentity"`
+}
+
+type DevicePostureIdentity struct {
+	Disabled      bool     `json:"disabled,omitempty"`
+	SerialNumbers []string `json:"serialNumbers,omitempty"`
 }
 
 // DeviceFieldsOpts determines which fields should be returned in the response.
@@ -214,8 +223,20 @@ func (c *Client) DeleteDevice(ctx context.Context, deviceID string) (err error)
 
 // AuthorizeDevice marks a device as authorized.
 func (c *Client) AuthorizeDevice(ctx context.Context, deviceID string) error {
+	return c.SetAuthorized(ctx, deviceID, true)
+}
+
+// SetAuthorized marks a device as authorized or not.
+func (c *Client) SetAuthorized(ctx context.Context, deviceID string, authorized bool) error {
+	params := &struct {
+		Authorized bool `json:"authorized"`
+	}{Authorized: authorized}
+	data, err := json.Marshal(params)
+	if err != nil {
+		return err
+	}
 	path := fmt.Sprintf("%s/api/v2/device/%s/authorized", c.baseURL(), url.PathEscape(deviceID))
-	req, err := http.NewRequestWithContext(ctx, "POST", path, strings.NewReader(`{"authorized":true}`))
+	req, err := http.NewRequestWithContext(ctx, "POST", path, bytes.NewBuffer(data))
 	if err != nil {
 		return err
 	}

client/tailscale/dns.go

@@ -1,9 +1,7 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
-//go:build go1.18
-// +build go1.18
+//go:build go1.19
 
 package tailscale
 
@@ -65,7 +63,7 @@ func (c *Client) dnsGETRequest(ctx context.Context, endpoint string) ([]byte, er
 	return b, nil
 }
 
-func (c *Client) dnsPOSTRequest(ctx context.Context, endpoint string, postData interface{}) ([]byte, error) {
+func (c *Client) dnsPOSTRequest(ctx context.Context, endpoint string, postData any) ([]byte, error) {
 	path := fmt.Sprintf("%s/api/v2/tailnet/%s/dns/%s", c.baseURL(), c.tailnet, endpoint)
 	data, err := json.Marshal(&postData)
 	if err != nil {

client/tailscale/example/servetls/servetls.go

@@ -1,6 +1,5 @@
-// Copyright (c) 2021 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
 // The servetls program shows how to run an HTTPS server
 // using a Tailscale cert via LetsEncrypt.

client/tailscale/keys.go

@@ -0,0 +1,166 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package tailscale
+
+import (
+	"bytes"
+	"context"
+	"encoding/json"
+	"fmt"
+	"net/http"
+	"time"
+)
+
+// Key represents a Tailscale API or auth key.
+type Key struct {
+	ID           string          `json:"id"`
+	Created      time.Time       `json:"created"`
+	Expires      time.Time       `json:"expires"`
+	Capabilities KeyCapabilities `json:"capabilities"`
+}
+
+// KeyCapabilities are the capabilities of a Key.
+type KeyCapabilities struct {
+	Devices KeyDeviceCapabilities `json:"devices,omitempty"`
+}
+
+// KeyDeviceCapabilities are the device-related capabilities of a Key.
+type KeyDeviceCapabilities struct {
+	Create KeyDeviceCreateCapabilities `json:"create"`
+}
+
+// KeyDeviceCreateCapabilities are the device creation capabilities of a Key.
+type KeyDeviceCreateCapabilities struct {
+	Reusable      bool     `json:"reusable"`
+	Ephemeral     bool     `json:"ephemeral"`
+	Preauthorized bool     `json:"preauthorized"`
+	Tags          []string `json:"tags,omitempty"`
+}
+
+// Keys returns the list of keys for the current user.
+func (c *Client) Keys(ctx context.Context) ([]string, error) {
+	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
+	}
+
+	b, resp, err := c.sendRequest(req)
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return nil, handleErrorResponse(b, resp)
+	}
+
+	var keys struct {
+		Keys []*Key `json:"keys"`
+	}
+	if err := json.Unmarshal(b, &keys); err != nil {
+		return nil, err
+	}
+	ret := make([]string, 0, len(keys.Keys))
+	for _, k := range keys.Keys {
+		ret = append(ret, k.ID)
+	}
+	return ret, nil
+}
+
+// CreateKey creates a new key for the current user. Currently, only auth keys
+// can be created. It returns the secret key itself, which cannot be retrieved again
+// later, and the key metadata.
+//
+// To create a key with a specific expiry, use CreateKeyWithExpiry.
+func (c *Client) CreateKey(ctx context.Context, caps KeyCapabilities) (keySecret string, keyMeta *Key, _ error) {
+	return c.CreateKeyWithExpiry(ctx, caps, 0)
+}
+
+// CreateKeyWithExpiry is like CreateKey, but allows specifying a expiration time.
+//
+// The time is truncated to a whole number of seconds. If zero, that means no expiration.
+func (c *Client) CreateKeyWithExpiry(ctx context.Context, caps KeyCapabilities, expiry time.Duration) (keySecret string, keyMeta *Key, _ error) {
+
+	// convert expirySeconds to an int64 (seconds)
+	expirySeconds := int64(expiry.Seconds())
+	if expirySeconds < 0 {
+		return "", nil, fmt.Errorf("expiry must be positive")
+	}
+	if expirySeconds == 0 && expiry != 0 {
+		return "", nil, fmt.Errorf("non-zero expiry must be at least one second")
+	}
+
+	keyRequest := struct {
+		Capabilities  KeyCapabilities `json:"capabilities"`
+		ExpirySeconds int64           `json:"expirySeconds,omitempty"`
+	}{caps, int64(expirySeconds)}
+	bs, err := json.Marshal(keyRequest)
+	if err != nil {
+		return "", nil, err
+	}
+
+	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
+	}
+
+	b, resp, err := c.sendRequest(req)
+	if err != nil {
+		return "", nil, err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return "", nil, handleErrorResponse(b, resp)
+	}
+
+	var key struct {
+		Key
+		Secret string `json:"key"`
+	}
+	if err := json.Unmarshal(b, &key); err != nil {
+		return "", nil, err
+	}
+	return key.Secret, &key.Key, nil
+}
+
+// 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 := 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
+	}
+
+	b, resp, err := c.sendRequest(req)
+	if err != nil {
+		return nil, err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return nil, handleErrorResponse(b, resp)
+	}
+
+	var key Key
+	if err := json.Unmarshal(b, &key); err != nil {
+		return nil, err
+	}
+	return &key, nil
+}
+
+// DeleteKey deletes the key with the given ID.
+func (c *Client) DeleteKey(ctx context.Context, id string) error {
+	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
+	}
+
+	b, resp, err := c.sendRequest(req)
+	if err != nil {
+		return err
+	}
+	if resp.StatusCode != http.StatusOK {
+		return handleErrorResponse(b, resp)
+	}
+	return nil
+}

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

@@ -1,12 +1,10 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
-//go:build !go1.18
-// +build !go1.18
+//go:build !go1.21
 
 package tailscale
 
 func init() {
-	you_need_Go_1_18_to_compile_Tailscale()
+	you_need_Go_1_21_to_compile_Tailscale()
 }

client/tailscale/routes.go

@@ -1,9 +1,7 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
-//go:build go1.18
-// +build go1.18
+//go:build go1.19
 
 package tailscale
 

client/tailscale/tailnet.go

@@ -1,9 +1,7 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
-//go:build go1.18
-// +build go1.18
+//go:build go1.19
 
 package tailscale
 
@@ -12,6 +10,8 @@ import (
 	"fmt"
 	"net/http"
 	"net/url"
+
+	"tailscale.com/util/httpm"
 )
 
 // TailnetDeleteRequest handles sending a DELETE request for a tailnet to control.
@@ -23,7 +23,7 @@ func (c *Client) TailnetDeleteRequest(ctx context.Context, tailnetID string) (er
 	}()
 
 	path := fmt.Sprintf("%s/api/v2/tailnet/%s", c.baseURL(), url.PathEscape(string(tailnetID)))
-	req, err := http.NewRequestWithContext(ctx, http.MethodDelete, path, nil)
+	req, err := http.NewRequestWithContext(ctx, httpm.DELETE, path, nil)
 	if err != nil {
 		return err
 	}

client/tailscale/tailscale.go

@@ -1,11 +1,9 @@
-// Copyright (c) 2022 Tailscale Inc & AUTHORS All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
 
-//go:build go1.18
-// +build go1.18
+//go:build go1.19
 
-// Package tailscale contains Go clients for the Tailscale Local API and
+// Package tailscale contains Go clients for the Tailscale LocalAPI and
 // Tailscale control plane API.
 //
 // Warning: this package is in development and makes no API compatibility
@@ -17,7 +15,6 @@ import (
 	"errors"
 	"fmt"
 	"io"
-	"io/ioutil"
 	"net/http"
 )
 
@@ -116,7 +113,7 @@ func (c *Client) Do(req *http.Request) (*http.Response, error) {
 	return c.httpClient().Do(req)
 }
 
-// sendRequest add the authenication key to the request and sends it. It
+// 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) {
 	if !I_Acknowledge_This_API_Is_Unstable {
@@ -131,7 +128,7 @@ func (c *Client) sendRequest(req *http.Request) ([]byte, *http.Response, error)
 
 	// Read response. Limit the response to 10MB.
 	body := io.LimitReader(resp.Body, maxReadSize+1)
-	b, err := ioutil.ReadAll(body)
+	b, err := io.ReadAll(body)
 	if len(b) > maxReadSize {
 		err = errors.New("API response too large")
 	}

client/web/assets.go

@@ -0,0 +1,131 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package web
+
+import (
+	"io"
+	"io/fs"
+	"log"
+	"net/http"
+	"net/http/httputil"
+	"net/url"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"strings"
+	"time"
+
+	prebuilt "github.com/tailscale/web-client-prebuilt"
+)
+
+var start = time.Now()
+
+func assetsHandler(devMode bool) (_ http.Handler, cleanup func()) {
+	if devMode {
+		// When in dev mode, proxy asset requests to the Vite dev server.
+		cleanup := startDevServer()
+		return devServerProxy(), cleanup
+	}
+
+	fsys := prebuilt.FS()
+	return http.HandlerFunc(func(w http.ResponseWriter, r *http.Request) {
+		path := strings.TrimPrefix(r.URL.Path, "/")
+		f, err := openPrecompressedFile(w, r, path, fsys)
+		if err != nil {
+			// Rewrite request to just fetch index.html and let
+			// the frontend router handle it.
+			r = r.Clone(r.Context())
+			path = "index.html"
+			f, err = openPrecompressedFile(w, r, path, fsys)
+		}
+		if f == nil {
+			http.Error(w, err.Error(), http.StatusNotFound)
+			return
+		}
+		defer f.Close()
+
+		// fs.File does not claim to implement Seeker, but in practice it does.
+		fSeeker, ok := f.(io.ReadSeeker)
+		if !ok {
+			http.Error(w, "Not seekable", http.StatusInternalServerError)
+			return
+		}
+
+		if strings.HasPrefix(path, "assets/") {
+			// Aggressively cache static assets, since we cache-bust our assets with
+			// hashed filenames.
+			w.Header().Set("Cache-Control", "public, max-age=31535996")
+			w.Header().Set("Vary", "Accept-Encoding")
+		}
+
+		http.ServeContent(w, r, path, start, fSeeker)
+	}), nil
+}
+
+func openPrecompressedFile(w http.ResponseWriter, r *http.Request, path string, fs fs.FS) (fs.File, error) {
+	if f, err := fs.Open(path + ".gz"); err == nil {
+		w.Header().Set("Content-Encoding", "gzip")
+		return f, nil
+	}
+	return fs.Open(path) // fallback
+}
+
+// startDevServer starts the JS dev server that does on-demand rebuilding
+// and serving of web client JS and CSS resources.
+func startDevServer() (cleanup func()) {
+	root := gitRootDir()
+	webClientPath := filepath.Join(root, "client", "web")
+
+	yarn := filepath.Join(root, "tool", "yarn")
+	node := filepath.Join(root, "tool", "node")
+	vite := filepath.Join(webClientPath, "node_modules", ".bin", "vite")
+
+	log.Printf("installing JavaScript deps using %s...", yarn)
+	out, err := exec.Command(yarn, "--non-interactive", "-s", "--cwd", webClientPath, "install").CombinedOutput()
+	if err != nil {
+		log.Fatalf("error running tailscale web's yarn install: %v, %s", err, out)
+	}
+	log.Printf("starting JavaScript dev server...")
+	cmd := exec.Command(node, vite)
+	cmd.Dir = webClientPath
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	if err := cmd.Start(); err != nil {
+		log.Fatalf("Starting JS dev server: %v", err)
+	}
+	log.Printf("JavaScript dev server running as pid %d", cmd.Process.Pid)
+	return func() {
+		cmd.Process.Signal(os.Interrupt)
+		err := cmd.Wait()
+		log.Printf("JavaScript dev server exited: %v", err)
+	}
+}
+
+// devServerProxy returns a reverse proxy to the vite dev server.
+func devServerProxy() *httputil.ReverseProxy {
+	// We use Vite to develop on the web client.
+	// Vite starts up its own local server for development,
+	// which we proxy requests to from Server.ServeHTTP.
+	// Here we set up the proxy to Vite's server.
+	handleErr := func(w http.ResponseWriter, r *http.Request, err error) {
+		w.Header().Set("Content-Type", "text/plain")
+		w.WriteHeader(http.StatusBadGateway)
+		w.Write([]byte("The web client development server isn't running. " +
+			"Run `./tool/yarn --cwd client/web start` from " +
+			"the repo root to start the development server."))
+		w.Write([]byte("\n\nError: " + err.Error()))
+	}
+	viteTarget, _ := url.Parse("http://127.0.0.1:4000")
+	devProxy := httputil.NewSingleHostReverseProxy(viteTarget)
+	devProxy.ErrorHandler = handleErr
+	return devProxy
+}
+
+func gitRootDir() string {
+	top, err := exec.Command("git", "rev-parse", "--show-toplevel").Output()
+	if err != nil {
+		log.Fatalf("failed to find git top level (not in corp git?): %v", err)
+	}
+	return strings.TrimSpace(string(top))
+}

client/web/auth.go

@@ -0,0 +1,298 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+package web
+
+import (
+	"context"
+	"crypto/rand"
+	"encoding/base64"
+	"errors"
+	"fmt"
+	"net/http"
+	"net/url"
+	"strings"
+	"time"
+
+	"tailscale.com/client/tailscale/apitype"
+	"tailscale.com/ipn/ipnstate"
+	"tailscale.com/tailcfg"
+)
+
+const (
+	sessionCookieName   = "TS-Web-Session"
+	sessionCookieExpiry = time.Hour * 24 * 30 // 30 days
+)
+
+// browserSession holds data about a user's browser session
+// on the full management web client.
+type browserSession struct {
+	// ID is the unique identifier for the session.
+	// It is passed in the user's "TS-Web-Session" browser cookie.
+	ID            string
+	SrcNode       tailcfg.NodeID
+	SrcUser       tailcfg.UserID
+	AuthID        string // from tailcfg.WebClientAuthResponse
+	AuthURL       string // from tailcfg.WebClientAuthResponse
+	Created       time.Time
+	Authenticated bool
+}
+
+// isAuthorized reports true if the given session is authorized
+// to be used by its associated user to access the full management
+// web client.
+//
+// isAuthorized is true only when s.Authenticated is true (i.e.
+// the user has authenticated the session) and the session is not
+// expired.
+// 2023-10-05: Sessions expire by default 30 days after creation.
+func (s *browserSession) isAuthorized(now time.Time) bool {
+	switch {
+	case s == nil:
+		return false
+	case !s.Authenticated:
+		return false // awaiting auth
+	case s.isExpired(now):
+		return false // expired
+	}
+	return true
+}
+
+// isExpired reports true if s is expired.
+// 2023-10-05: Sessions expire by default 30 days after creation.
+func (s *browserSession) isExpired(now time.Time) bool {
+	return !s.Created.IsZero() && now.After(s.expires())
+}
+
+// expires reports when the given session expires.
+func (s *browserSession) expires() time.Time {
+	return s.Created.Add(sessionCookieExpiry)
+}
+
+var (
+	errNoSession          = errors.New("no-browser-session")
+	errNotUsingTailscale  = errors.New("not-using-tailscale")
+	errTaggedRemoteSource = errors.New("tagged-remote-source")
+	errTaggedLocalSource  = errors.New("tagged-local-source")
+	errNotOwner           = errors.New("not-owner")
+)
+
+// getSession retrieves the browser session associated with the request,
+// if one exists.
+//
+// An error is returned in any of the following cases:
+//
+//   - (errNotUsingTailscale) The request was not made over tailscale.
+//
+//   - (errNoSession) The request does not have a session.
+//
+//   - (errTaggedRemoteSource) The source is remote (another node) and tagged.
+//     Users must use their own user-owned devices to manage other nodes'
+//     web clients.
+//
+//   - (errTaggedLocalSource) The source is local (the same node) and tagged.
+//     Tagged nodes can only be remotely managed, allowing ACLs to dictate
+//     access to web clients.
+//
+//   - (errNotOwner) The source is not the owner of this client (if the
+//     client is user-owned). Only the owner is allowed to manage the
+//     node via the web client.
+//
+// If no error is returned, the browserSession is always non-nil.
+// getTailscaleBrowserSession does not check whether the session has been
+// authorized by the user. Callers can use browserSession.isAuthorized.
+//
+// The WhoIsResponse is always populated, with a non-nil Node and UserProfile,
+// unless getTailscaleBrowserSession reports errNotUsingTailscale.
+func (s *Server) getSession(r *http.Request) (*browserSession, *apitype.WhoIsResponse, *ipnstate.Status, error) {
+	whoIs, whoIsErr := s.lc.WhoIs(r.Context(), r.RemoteAddr)
+	status, statusErr := s.lc.StatusWithoutPeers(r.Context())
+	switch {
+	case whoIsErr != nil:
+		return nil, nil, status, errNotUsingTailscale
+	case statusErr != nil:
+		return nil, whoIs, nil, statusErr
+	case status.Self == nil:
+		return nil, whoIs, status, errors.New("missing self node in tailscale status")
+	case whoIs.Node.IsTagged() && whoIs.Node.StableID == status.Self.ID:
+		return nil, whoIs, status, errTaggedLocalSource
+	case whoIs.Node.IsTagged():
+		return nil, whoIs, status, errTaggedRemoteSource
+	case !status.Self.IsTagged() && status.Self.UserID != whoIs.UserProfile.ID:
+		return nil, whoIs, status, errNotOwner
+	}
+	srcNode := whoIs.Node.ID
+	srcUser := whoIs.UserProfile.ID
+
+	cookie, err := r.Cookie(sessionCookieName)
+	if errors.Is(err, http.ErrNoCookie) {
+		return nil, whoIs, status, errNoSession
+	} else if err != nil {
+		return nil, whoIs, status, err
+	}
+	v, ok := s.browserSessions.Load(cookie.Value)
+	if !ok {
+		return nil, whoIs, status, errNoSession
+	}
+	session := v.(*browserSession)
+	if session.SrcNode != srcNode || session.SrcUser != srcUser {
+		// In this case the browser cookie is associated with another tailscale node.
+		// Maybe the source browser's machine was logged out and then back in as a different node.
+		// Return errNoSession because there is no session for this user.
+		return nil, whoIs, status, errNoSession
+	} else if session.isExpired(s.timeNow()) {
+		// Session expired, remove from session map and return errNoSession.
+		s.browserSessions.Delete(session.ID)
+		return nil, whoIs, status, errNoSession
+	}
+	return session, whoIs, status, nil
+}
+
+// newSession creates a new session associated with the given source user/node,
+// and stores it back to the session cache. Creating of a new session includes
+// generating a new auth URL from the control server.
+func (s *Server) newSession(ctx context.Context, src *apitype.WhoIsResponse) (*browserSession, error) {
+	sid, err := s.newSessionID()
+	if err != nil {
+		return nil, err
+	}
+	session := &browserSession{
+		ID:      sid,
+		SrcNode: src.Node.ID,
+		SrcUser: src.UserProfile.ID,
+		Created: s.timeNow(),
+	}
+
+	if s.controlSupportsCheckMode(ctx) {
+		// control supports check mode, so get a new auth URL and return.
+		a, err := s.newAuthURL(ctx, src.Node.ID)
+		if err != nil {
+			return nil, err
+		}
+		session.AuthID = a.ID
+		session.AuthURL = a.URL
+	} else {
+		// control does not support check mode, so there is no additional auth we can do.
+		session.Authenticated = true
+	}
+
+	s.browserSessions.Store(sid, session)
+	return session, nil
+}
+
+// controlSupportsCheckMode returns whether the current control server supports web client check mode, to verify a user's identity.
+// We assume that only "tailscale.com" control servers support check mode.
+// This allows the web client to be used with non-standard control servers.
+// If an error occurs getting the control URL, this method returns true to fail closed.
+//
+// TODO(juanfont/headscale#1623): adjust or remove this when headscale supports check mode.
+func (s *Server) controlSupportsCheckMode(ctx context.Context) bool {
+	prefs, err := s.lc.GetPrefs(ctx)
+	if err != nil {
+		return true
+	}
+	controlURL, err := url.Parse(prefs.ControlURLOrDefault())
+	if err != nil {
+		return true
+	}
+	return strings.HasSuffix(controlURL.Host, ".tailscale.com")
+}
+
+// awaitUserAuth blocks until the given session auth has been completed
+// by the user on the control server, then updates the session cache upon
+// completion. An error is returned if control auth failed for any reason.
+func (s *Server) awaitUserAuth(ctx context.Context, session *browserSession) error {
+	if session.isAuthorized(s.timeNow()) {
+		return nil // already authorized
+	}
+	a, err := s.waitAuthURL(ctx, session.AuthID, session.SrcNode)
+	if err != nil {
+		// Clean up the session. Doing this on any error from control
+		// server to avoid the user getting stuck with a bad session
+		// cookie.
+		s.browserSessions.Delete(session.ID)
+		return err
+	}
+	if a.Complete {
+		session.Authenticated = a.Complete
+		s.browserSessions.Store(session.ID, session)
+	}
+	return nil
+}
+
+func (s *Server) newSessionID() (string, error) {
+	raw := make([]byte, 16)
+	for i := 0; i < 5; i++ {
+		if _, err := rand.Read(raw); err != nil {
+			return "", err
+		}
+		cookie := "ts-web-" + base64.RawURLEncoding.EncodeToString(raw)
+		if _, ok := s.browserSessions.Load(cookie); !ok {
+			return cookie, nil
+		}
+	}
+	return "", errors.New("too many collisions generating new session; please refresh page")
+}
+
+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.
+func (p peerCapabilities) canEdit(feature capFeature) bool {
+	if p == nil {
+		return false
+	}
+	if p[capFeatureAll] {
+		return true
+	}
+	return p[feature]
+}
+
+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.
+
+	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
+)
+
+type capRule struct {
+	CanEdit []string `json:"canEdit,omitempty"` // list of features peer is allowed to edit
+}
+
+// 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 {
+		return peerCapabilities{}, nil
+	}
+
+	if !status.Self.IsTagged() {
+		// User owned nodes are only ever manageable by the owner.
+		if status.Self.UserID != whois.UserProfile.ID {
+			return peerCapabilities{}, nil
+		} else {
+			return peerCapabilities{capFeatureAll: true}, nil // owner can edit all features
+		}
+	}
+
+	// For tagged nodes, we actually look at the granted capabilities.
+	caps := peerCapabilities{}
+	rules, err := tailcfg.UnmarshalCapJSON[capRule](whois.CapMap, tailcfg.PeerCapabilityWebUI)
+	if err != nil {
+		return nil, fmt.Errorf("failed to unmarshal capability: %v", err)
+	}
+	for _, c := range rules {
+		for _, f := range c.CanEdit {
+			caps[capFeature(strings.ToLower(f))] = true
+		}
+	}
+	return caps, nil
+}

client/web/build/index.html

@@ -0,0 +1,29 @@
+<!doctype html>
+<html class="bg-gray-50">
+  <head>
+    <title>Tailscale</title>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <link rel="shortcut icon" href="data:image/png;base64,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" />
+    
+    <link rel="preload" as="font" href="./assets/Inter.var.latin-39e72c07.woff2" type="font/woff2" crossorigin />
+    <script type="module" crossorigin src="./assets/index-fd4af382.js"></script>
+    <link rel="stylesheet" href="./assets/index-218918fa.css">
+  </head>
+  <body class="px-2">
+    <noscript>
+      <p class="mb-2">You need to enable Javascript to access the Tailscale web client.</p>
+      <p>If you need any help, feel free to <a href="mailto:support+webclient@tailscale.com" class="link">contact us</a>.</p>
+    </noscript>
+    
+    <script>
+      window.addEventListener("load", () => {
+        if (!window.Tailscale) {
+          const rootEl = document.createElement("p")
+          rootEl.innerHTML = 'Tailscale was built without the web client. See <a href="https://github.com/tailscale/tailscale#building-the-web-client">Building the web client</a> for more information.'
+          document.body.append(rootEl)
+        }
+      });
+    </script>
+  </body>
+</html>

client/web/index.html

@@ -0,0 +1,28 @@
+<!doctype html>
+<html class="bg-gray-50">
+  <head>
+    <title>Tailscale</title>
+    <meta charset="utf-8" />
+    <meta name="viewport" content="width=device-width, initial-scale=1" />
+    <link rel="shortcut icon" href="data:image/png;base64,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" />
+    <link rel="stylesheet" type="text/css" href="/src/index.css" />
+    <link rel="preload" as="font" href="/src/assets/fonts/Inter.var.latin.woff2" type="font/woff2" crossorigin />
+  </head>
+  <body class="px-2">
+    <noscript>
+      <p class="mb-2">You need to enable Javascript to access the Tailscale web client.</p>
+      <p>If you need any help, feel free to <a href="mailto:support+webclient@tailscale.com" class="link">contact us</a>.</p>
+    </noscript>
+    <script type="module" src="/src/index.tsx"></script>
+    <script>
+      // if this script is changed, also change hash in web.go
+      window.addEventListener("load", () => {
+        if (!window.Tailscale) {
+          const rootEl = document.createElement("p")
+          rootEl.innerHTML = 'Tailscale web interface is unavailable.';
+          document.body.append(rootEl)
+        }
+      })
+    </script>
+  </body>
+</html>

client/web/package.json

@@ -0,0 +1,76 @@
+{
+  "name": "webclient",
+  "version": "0.0.1",
+  "license": "BSD-3-Clause",
+  "engines": {
+    "node": "18.16.1",
+    "yarn": "1.22.19"
+  },
+  "private": true,
+  "dependencies": {
+    "@radix-ui/react-collapsible": "^1.0.3",
+    "@radix-ui/react-dialog": "^1.0.5",
+    "@radix-ui/react-popover": "^1.0.6",
+    "classnames": "^2.3.1",
+    "react": "^18.2.0",
+    "react-dom": "^18.2.0",
+    "swr": "^2.2.4",
+    "wouter": "^2.11.0",
+    "zustand": "^4.4.7"
+  },
+  "devDependencies": {
+    "@types/react": "^18.0.20",
+    "@types/react-dom": "^18.0.6",
+    "@vitejs/plugin-react-swc": "^3.3.2",
+    "autoprefixer": "^10.4.15",
+    "eslint": "^8.23.1",
+    "eslint-config-react-app": "^7.0.1",
+    "eslint-plugin-curly-quotes": "^1.0.4",
+    "jsdom": "^23.0.1",
+    "postcss": "^8.4.31",
+    "prettier": "^2.5.1",
+    "prettier-plugin-organize-imports": "^3.2.2",
+    "tailwindcss": "^3.3.3",
+    "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": "^0.32.0"
+  },
+  "scripts": {
+    "build": "vite build",
+    "start": "vite",
+    "lint": "tsc --noEmit && eslint 'src/**/*.{ts,tsx,js,jsx}'",
+    "test": "vitest",
+    "format": "prettier --write 'src/**/*.{ts,tsx}'",
+    "format-check": "prettier --check 'src/**/*.{ts,tsx}'"
+  },
+  "eslintConfig": {
+    "extends": [
+      "react-app"
+    ],
+    "plugins": [
+      "curly-quotes",
+      "react-hooks"
+    ],
+    "rules": {
+      "curly-quotes/no-straight-quotes": "warn",
+      "react-hooks/rules-of-hooks": "error",
+      "react-hooks/exhaustive-deps": "error"
+    },
+    "settings": {
+      "projectRoot": "client/web/package.json"
+    }
+  },
+  "prettier": {
+    "semi": false,
+    "printWidth": 80
+  },
+  "postcss": {
+    "plugins": {
+      "tailwindcss": {},
+      "autoprefixer": {}
+    }
+  }
+}

client/web/qnap.go

@@ -0,0 +1,127 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+// qnap.go contains handlers and logic, such as authentication,
+// that is specific to running the web client on QNAP.
+
+package web
+
+import (
+	"crypto/tls"
+	"encoding/xml"
+	"errors"
+	"fmt"
+	"io"
+	"log"
+	"net/http"
+	"net/url"
+)
+
+// authorizeQNAP authenticates the logged-in QNAP user and verifies that they
+// are authorized to use the web client.
+// If the user is not authorized to use the client, an error is returned.
+func authorizeQNAP(r *http.Request) (authorized bool, err error) {
+	_, resp, err := qnapAuthn(r)
+	if err != nil {
+		return false, err
+	}
+	if resp.IsAdmin == 0 {
+		return false, errors.New("user is not an admin")
+	}
+
+	return true, nil
+}
+
+type qnapAuthResponse struct {
+	AuthPassed int    `xml:"authPassed"`
+	IsAdmin    int    `xml:"isAdmin"`
+	AuthSID    string `xml:"authSid"`
+	ErrorValue int    `xml:"errorValue"`
+}
+
+func qnapAuthn(r *http.Request) (string, *qnapAuthResponse, error) {
+	user, err := r.Cookie("NAS_USER")
+	if err != nil {
+		return "", nil, err
+	}
+	token, err := r.Cookie("qtoken")
+	if err == nil {
+		return qnapAuthnQtoken(r, user.Value, token.Value)
+	}
+	sid, err := r.Cookie("NAS_SID")
+	if err == nil {
+		return qnapAuthnSid(r, user.Value, sid.Value)
+	}
+	return "", nil, fmt.Errorf("not authenticated by any mechanism")
+}
+
+// qnapAuthnURL returns the auth URL to use by inferring where the UI is
+// running based on the request URL. This is necessary because QNAP has so
+// many options, see https://github.com/tailscale/tailscale/issues/7108
+// and https://github.com/tailscale/tailscale/issues/6903
+func qnapAuthnURL(requestUrl string, query url.Values) string {
+	in, err := url.Parse(requestUrl)
+	scheme := ""
+	host := ""
+	if err != nil || in.Scheme == "" {
+		log.Printf("Cannot parse QNAP login URL %v", err)
+
+		// try localhost and hope for the best
+		scheme = "http"
+		host = "localhost"
+	} else {
+		scheme = in.Scheme
+		host = in.Host
+	}
+
+	u := url.URL{
+		Scheme:   scheme,
+		Host:     host,
+		Path:     "/cgi-bin/authLogin.cgi",
+		RawQuery: query.Encode(),
+	}
+
+	return u.String()
+}
+
+func qnapAuthnQtoken(r *http.Request, user, token string) (string, *qnapAuthResponse, error) {
+	query := url.Values{
+		"qtoken": []string{token},
+		"user":   []string{user},
+	}
+	return qnapAuthnFinish(user, qnapAuthnURL(r.URL.String(), query))
+}
+
+func qnapAuthnSid(r *http.Request, user, sid string) (string, *qnapAuthResponse, error) {
+	query := url.Values{
+		"sid": []string{sid},
+	}
+	return qnapAuthnFinish(user, qnapAuthnURL(r.URL.String(), query))
+}
+
+func qnapAuthnFinish(user, url string) (string, *qnapAuthResponse, error) {
+	// QNAP Force HTTPS mode uses a self-signed certificate. Even importing
+	// the QNAP root CA isn't enough, the cert doesn't have a usable CN nor
+	// SAN. See https://github.com/tailscale/tailscale/issues/6903
+	tr := &http.Transport{
+		TLSClientConfig: &tls.Config{InsecureSkipVerify: true},
+	}
+	client := &http.Client{Transport: tr}
+	resp, err := client.Get(url)
+	if err != nil {
+		return "", nil, err
+	}
+	defer resp.Body.Close()
+	out, err := io.ReadAll(resp.Body)
+	if err != nil {
+		return "", nil, err
+	}
+	authResp := &qnapAuthResponse{}
+	if err := xml.Unmarshal(out, authResp); err != nil {
+		return "", nil, err
+	}
+	if authResp.AuthPassed == 0 {
+		return "", nil, fmt.Errorf("not authenticated")
+	}
+	return user, authResp, nil
+}

client/web/src/api.ts

@@ -0,0 +1,377 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import { useCallback } from "react"
+import useToaster from "src/hooks/toaster"
+import { ExitNode, NodeData, SubnetRoute } from "src/types"
+import { assertNever } from "src/utils/util"
+import { MutatorOptions, SWRConfiguration, useSWRConfig } from "swr"
+import { noExitNode, runAsExitNode } from "./hooks/exit-nodes"
+
+export const swrConfig: SWRConfiguration = {
+  fetcher: (url: string) => apiFetch(url, "GET"),
+  onError: (err, _) => console.error(err),
+}
+
+type APIType =
+  | { action: "up"; data: TailscaleUpData }
+  | { action: "logout" }
+  | { action: "new-auth-session"; data: AuthSessionNewData }
+  | { action: "update-prefs"; data: LocalPrefsData }
+  | { action: "update-routes"; data: SubnetRoute[] }
+  | { action: "update-exit-node"; data: ExitNode }
+
+/**
+ * POST /api/up data
+ */
+type TailscaleUpData = {
+  Reauthenticate?: boolean // force reauthentication
+  ControlURL?: string
+  AuthKey?: string
+}
+
+/**
+ * GET /api/auth/session/new data
+ */
+type AuthSessionNewData = {
+  authUrl: string
+}
+
+/**
+ * PATCH /api/local/v0/prefs data
+ */
+type LocalPrefsData = {
+  RunSSHSet?: boolean
+  RunSSH?: boolean
+}
+
+/**
+ * POST /api/routes data
+ */
+type RoutesData = {
+  SetExitNode?: boolean
+  SetRoutes?: boolean
+  UseExitNode?: string
+  AdvertiseExitNode?: boolean
+  AdvertiseRoutes?: string[]
+}
+
+/**
+ * useAPI hook returns an api handler that can execute api calls
+ * throughout the web client UI.
+ */
+export function useAPI() {
+  const toaster = useToaster()
+  const { mutate } = useSWRConfig() // allows for global mutation
+
+  const handlePostError = useCallback(
+    (toast?: string) => (err: Error) => {
+      console.error(err)
+      toast && toaster.show({ variant: "danger", message: toast })
+      throw err
+    },
+    [toaster]
+  )
+
+  /**
+   * optimisticMutate wraps the SWR `mutate` function to apply some
+   * type-awareness with the following behavior:
+   *
+   *    1. `optimisticData` update is applied immediately on FetchDataType
+   *       throughout the web client UI.
+   *
+   *    2. `fetch` data mutation runs.
+   *
+   *    3. On completion, FetchDataType is revalidated to exactly reflect the
+   *       updated server state.
+   *
+   * The `key` argument is the useSWR key associated with the MutateDataType.
+   * All `useSWR(key)` consumers throughout the UI will see updates reflected.
+   */
+  const optimisticMutate = useCallback(
+    <MutateDataType, FetchDataType = any>(
+      key: string,
+      fetch: Promise<FetchDataType>,
+      optimisticData: (current: MutateDataType) => MutateDataType,
+      revalidate?: boolean // optionally specify whether to run final revalidation (step 3)
+    ): Promise<FetchDataType | undefined> => {
+      const options: MutatorOptions = {
+        /**
+         * populateCache is meant for use when the remote request returns back
+         * the updated data directly. i.e. When FetchDataType is the same as
+         * MutateDataType. Most of our data manipulation requests return a 200
+         * with empty data on success. We turn off populateCache so that the
+         * cache only gets updated after completion of the remote reqeust when
+         * the revalidation step runs.
+         */
+        populateCache: false,
+        optimisticData,
+        revalidate: revalidate,
+      }
+      return mutate(key, fetch, options)
+    },
+    [mutate]
+  )
+
+  const api = useCallback(
+    (t: APIType) => {
+      switch (t.action) {
+        /**
+         * "up" handles authenticating the machine to tailnet.
+         */
+        case "up":
+          return apiFetch<{ url?: string }>("/up", "POST", t.data)
+            .then((d) => d.url && window.open(d.url, "_blank")) // "up" login step
+            .then(() => incrementMetric("web_client_node_connect"))
+            .then(() => mutate("/data"))
+            .catch(handlePostError("Failed to login"))
+
+        /**
+         * "logout" handles logging the node out of tailscale, effectively
+         * expiring its node key.
+         */
+        case "logout":
+          // For logout, must increment metric before running api call,
+          // as tailscaled will be unreachable after the call completes.
+          incrementMetric("web_client_node_disconnect")
+          return apiFetch("/local/v0/logout", "POST").catch(
+            handlePostError("Failed to logout")
+          )
+
+        /**
+         * "new-auth-session" handles creating a new check mode session to
+         * authorize the viewing user to manage the node via the web client.
+         */
+        case "new-auth-session":
+          return apiFetch<AuthSessionNewData>("/auth/session/new", "GET").catch(
+            handlePostError("Failed to create new session")
+          )
+
+        /**
+         * "update-prefs" handles setting the node's tailscale prefs.
+         */
+        case "update-prefs": {
+          return optimisticMutate<NodeData>(
+            "/data",
+            apiFetch<LocalPrefsData>("/local/v0/prefs", "PATCH", t.data),
+            (old) => ({
+              ...old,
+              RunningSSHServer: t.data.RunSSHSet
+                ? Boolean(t.data.RunSSH)
+                : old.RunningSSHServer,
+            })
+          )
+            .then(
+              () =>
+                t.data.RunSSHSet &&
+                incrementMetric(
+                  t.data.RunSSH
+                    ? "web_client_ssh_enable"
+                    : "web_client_ssh_disable"
+                )
+            )
+            .catch(handlePostError("Failed to update node preference"))
+        }
+
+        /**
+         * "update-routes" handles setting the node's advertised routes.
+         */
+        case "update-routes": {
+          const body: RoutesData = {
+            SetRoutes: true,
+            AdvertiseRoutes: t.data.map((r) => r.Route),
+          }
+          return optimisticMutate<NodeData>(
+            "/data",
+            apiFetch<void>("/routes", "POST", body),
+            (old) => ({ ...old, AdvertisedRoutes: t.data })
+          )
+            .then(() => incrementMetric("web_client_advertise_routes_change"))
+            .catch(handlePostError("Failed to update routes"))
+        }
+
+        /**
+         * "update-exit-node" handles updating the node's state as either
+         * running as an exit node or using another node as an exit node.
+         */
+        case "update-exit-node": {
+          const id = t.data.ID
+          const body: RoutesData = {
+            SetExitNode: true,
+          }
+          if (id !== noExitNode.ID && id !== runAsExitNode.ID) {
+            body.UseExitNode = id
+          } else if (id === runAsExitNode.ID) {
+            body.AdvertiseExitNode = true
+          }
+          const metrics: MetricName[] = []
+          return optimisticMutate<NodeData>(
+            "/data",
+            apiFetch<void>("/routes", "POST", body),
+            (old) => {
+              // Only update metrics whose values have changed.
+              if (old.AdvertisingExitNode !== Boolean(body.AdvertiseExitNode)) {
+                metrics.push(
+                  body.AdvertiseExitNode
+                    ? "web_client_advertise_exitnode_enable"
+                    : "web_client_advertise_exitnode_disable"
+                )
+              }
+              if (Boolean(old.UsingExitNode) !== Boolean(body.UseExitNode)) {
+                metrics.push(
+                  body.UseExitNode
+                    ? "web_client_use_exitnode_enable"
+                    : "web_client_use_exitnode_disable"
+                )
+              }
+              return {
+                ...old,
+                UsingExitNode: Boolean(body.UseExitNode) ? t.data : undefined,
+                AdvertisingExitNode: Boolean(body.AdvertiseExitNode),
+                AdvertisingExitNodeApproved: Boolean(body.AdvertiseExitNode)
+                  ? true // gets updated in revalidation
+                  : old.AdvertisingExitNodeApproved,
+              }
+            },
+            false // skip final revalidation
+          )
+            .then(() => metrics.forEach((m) => incrementMetric(m)))
+            .catch(handlePostError("Failed to update exit node"))
+        }
+
+        default:
+          assertNever(t)
+      }
+    },
+    [handlePostError, mutate, optimisticMutate]
+  )
+
+  return api
+}
+
+let csrfToken: string
+let synoToken: string | undefined // required for synology API requests
+let unraidCsrfToken: string | undefined // required for unraid POST requests (#8062)
+
+/**
+ * apiFetch wraps the standard JS fetch function with csrf header
+ * management and param additions specific to the web client.
+ *
+ * apiFetch adds the `api` prefix to the request URL,
+ * so endpoint should be provided without the `api` prefix
+ * (i.e. provide `/data` rather than `api/data`).
+ */
+export function apiFetch<T>(
+  endpoint: string,
+  method: "GET" | "POST" | "PATCH",
+  body?: any
+): Promise<T> {
+  const urlParams = new URLSearchParams(window.location.search)
+  const nextParams = new URLSearchParams()
+  if (synoToken) {
+    nextParams.set("SynoToken", synoToken)
+  } else {
+    const token = urlParams.get("SynoToken")
+    if (token) {
+      nextParams.set("SynoToken", token)
+    }
+  }
+  const search = nextParams.toString()
+  const url = `api${endpoint}${search ? `?${search}` : ""}`
+
+  var contentType: string
+  if (unraidCsrfToken && method === "POST") {
+    const params = new URLSearchParams()
+    params.append("csrf_token", unraidCsrfToken)
+    if (body) {
+      params.append("ts_data", JSON.stringify(body))
+    }
+    body = params.toString()
+    contentType = "application/x-www-form-urlencoded;charset=UTF-8"
+  } else {
+    body = body ? JSON.stringify(body) : undefined
+    contentType = "application/json"
+  }
+
+  return fetch(url, {
+    method: method,
+    headers: {
+      Accept: "application/json",
+      "Content-Type": contentType,
+      "X-CSRF-Token": csrfToken,
+    },
+    body: body,
+  })
+    .then((r) => {
+      updateCsrfToken(r)
+      if (!r.ok) {
+        return r.text().then((err) => {
+          throw new Error(err)
+        })
+      }
+      return r
+    })
+    .then((r) => {
+      if (r.headers.get("Content-Type") === "application/json") {
+        return r.json()
+      }
+    })
+    .then((r) => {
+      r?.UnraidToken && setUnraidCsrfToken(r.UnraidToken)
+      return r
+    })
+}
+
+function updateCsrfToken(r: Response) {
+  const tok = r.headers.get("X-CSRF-Token")
+  if (tok) {
+    csrfToken = tok
+  }
+}
+
+export function setSynoToken(token?: string) {
+  synoToken = token
+}
+
+function setUnraidCsrfToken(token?: string) {
+  unraidCsrfToken = token
+}
+
+/**
+ * incrementMetric hits the client metrics local API endpoint to
+ * increment the given counter metric by one.
+ */
+export function incrementMetric(metricName: MetricName) {
+  const postData: MetricsPOSTData[] = [
+    {
+      Name: metricName,
+      Type: "counter",
+      Value: 1,
+    },
+  ]
+
+  apiFetch("/local/v0/upload-client-metrics", "POST", postData).catch(
+    (error) => {
+      console.error(error)
+    }
+  )
+}
+
+type MetricsPOSTData = {
+  Name: MetricName
+  Type: MetricType
+  Value: number
+}
+
+type MetricType = "counter" | "gauge"
+
+export type MetricName =
+  | "web_client_advertise_exitnode_enable"
+  | "web_client_advertise_exitnode_disable"
+  | "web_client_use_exitnode_enable"
+  | "web_client_use_exitnode_disable"
+  | "web_client_ssh_enable"
+  | "web_client_ssh_disable"
+  | "web_client_node_connect"
+  | "web_client_node_disconnect"
+  | "web_client_advertise_routes_change"

client/web/src/assets/icons/arrow-right.svg

@@ -0,0 +1,4 @@
+<svg width="24" height="25" viewBox="0 0 24 25" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M5 12.5H19" stroke="#706E6D" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M12 5.5L19 12.5L12 19.5" stroke="#706E6D" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/web/src/assets/icons/arrow-up-circle.svg

@@ -0,0 +1,5 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+  <path d="M12 22C17.5228 22 22 17.5228 22 12C22 6.47715 17.5228 2 12 2C6.47715 2 2 6.47715 2 12C2 17.5228 6.47715 22 12 22Z" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+  <path d="M16 12L12 8L8 12" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+  <path d="M12 16V8" stroke="black" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/web/src/assets/icons/check-circle.svg

@@ -0,0 +1,4 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M22 11.08V12C21.9988 14.1564 21.3005 16.2547 20.0093 17.9818C18.7182 19.709 16.9033 20.9725 14.8354 21.5839C12.7674 22.1953 10.5573 22.1219 8.53447 21.3746C6.51168 20.6273 4.78465 19.2461 3.61096 17.4371C2.43727 15.628 1.87979 13.4881 2.02168 11.3363C2.16356 9.18455 2.99721 7.13631 4.39828 5.49706C5.79935 3.85781 7.69279 2.71537 9.79619 2.24013C11.8996 1.7649 14.1003 1.98232 16.07 2.85999" stroke="#1EA672" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M22 4L12 14.01L9 11.01" stroke="#1EA672" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/web/src/assets/icons/check.svg

@@ -0,0 +1,3 @@
+<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M16.6673 5L7.50065 14.1667L3.33398 10" stroke="#706E6D" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/web/src/assets/icons/chevron-down.svg

@@ -0,0 +1,3 @@
+<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M5 7.5L10 12.5L15 7.5" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/web/src/assets/icons/clock.svg

@@ -0,0 +1,11 @@
+<svg width="16" height="16" viewBox="0 0 16 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_14876_118476)">
+<path d="M8.00065 14.6667C11.6825 14.6667 14.6673 11.6819 14.6673 8.00004C14.6673 4.31814 11.6825 1.33337 8.00065 1.33337C4.31875 1.33337 1.33398 4.31814 1.33398 8.00004C1.33398 11.6819 4.31875 14.6667 8.00065 14.6667Z" stroke="#706E6D" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M8 4V8L10.6667 9.33333" stroke="#706E6D" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+</g>
+<defs>
+<clipPath id="clip0_14876_118476">
+<rect width="16" height="16" fill="white"/>
+</clipPath>
+</defs>
+</svg>

client/web/src/assets/icons/copy.svg

@@ -0,0 +1,4 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M20 9H11C9.89543 9 9 9.89543 9 11V20C9 21.1046 9.89543 22 11 22H20C21.1046 22 22 21.1046 22 20V11C22 9.89543 21.1046 9 20 9Z" stroke="#292828" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M5 15H4C3.46957 15 2.96086 14.7893 2.58579 14.4142C2.21071 14.0391 2 13.5304 2 13V4C2 3.46957 2.21071 2.96086 2.58579 2.58579C2.96086 2.21071 3.46957 2 4 2H13C13.5304 2 14.0391 2.21071 14.4142 2.58579C14.7893 2.96086 15 3.46957 15 4V5" stroke="#292828" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/web/src/assets/icons/eye.svg

@@ -0,0 +1,11 @@
+<svg width="15" height="16" viewBox="0 0 15 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_15367_14595)">
+<path d="M0.625 8C0.625 8 3.125 3 7.5 3C11.875 3 14.375 8 14.375 8C14.375 8 11.875 13 7.5 13C3.125 13 0.625 8 0.625 8Z" stroke="white" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M7.5 9.875C8.53553 9.875 9.375 9.03553 9.375 8C9.375 6.96447 8.53553 6.125 7.5 6.125C6.46447 6.125 5.625 6.96447 5.625 8C5.625 9.03553 6.46447 9.875 7.5 9.875Z" stroke="white" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+</g>
+<defs>
+<clipPath id="clip0_15367_14595">
+<rect width="15" height="15" fill="white" transform="translate(0 0.5)"/>
+</clipPath>
+</defs>
+</svg>

client/web/src/assets/icons/machine.svg

@@ -0,0 +1,13 @@
+<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_14860_117136)">
+<path d="M16.666 1.66667H3.33268C2.41221 1.66667 1.66602 2.41286 1.66602 3.33334V6.66667C1.66602 7.58715 2.41221 8.33334 3.33268 8.33334H16.666C17.5865 8.33334 18.3327 7.58715 18.3327 6.66667V3.33334C18.3327 2.41286 17.5865 1.66667 16.666 1.66667Z" stroke="black" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M16.666 11.6667H3.33268C2.41221 11.6667 1.66602 12.4129 1.66602 13.3333V16.6667C1.66602 17.5871 2.41221 18.3333 3.33268 18.3333H16.666C17.5865 18.3333 18.3327 17.5871 18.3327 16.6667V13.3333C18.3327 12.4129 17.5865 11.6667 16.666 11.6667Z" stroke="black" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M5 5H5.01" stroke="black" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M5 15H5.01" stroke="black" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+</g>
+<defs>
+<clipPath id="clip0_14860_117136">
+<rect width="20" height="20" fill="white"/>
+</clipPath>
+</defs>
+</svg>

client/web/src/assets/icons/plus.svg

@@ -0,0 +1,4 @@
+<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M10 4.16663V15.8333" stroke="white" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M4.16602 10H15.8327" stroke="white" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/web/src/assets/icons/search.svg

@@ -0,0 +1,4 @@
+<svg width="20" height="20" viewBox="0 0 20 20" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M9.16667 15.8333C12.8486 15.8333 15.8333 12.8486 15.8333 9.16667C15.8333 5.48477 12.8486 2.5 9.16667 2.5C5.48477 2.5 2.5 5.48477 2.5 9.16667C2.5 12.8486 5.48477 15.8333 9.16667 15.8333Z" stroke="#706E6D" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M17.5 17.5L13.875 13.875" stroke="#706E6D" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/web/src/assets/icons/tailscale-icon.svg

@@ -0,0 +1,18 @@
+<svg width="26" height="26" viewBox="0 0 26 26" fill="none" xmlns="http://www.w3.org/2000/svg">
+<g clip-path="url(#clip0_13627_11860)">
+<path opacity="0.2" d="M3.8696 6.77137C5.56662 6.77137 6.94233 5.39567 6.94233 3.69865C6.94233 2.00163 5.56662 0.625919 3.8696 0.625919C2.17258 0.625919 0.796875 2.00163 0.796875 3.69865C0.796875 5.39567 2.17258 6.77137 3.8696 6.77137Z" fill="black"/>
+<path d="M3.8696 15.9327C5.56662 15.9327 6.94233 14.5569 6.94233 12.8599C6.94233 11.1629 5.56662 9.7872 3.8696 9.7872C2.17258 9.7872 0.796875 11.1629 0.796875 12.8599C0.796875 14.5569 2.17258 15.9327 3.8696 15.9327Z" fill="black"/>
+<path opacity="0.2" d="M3.8696 25.2646C5.56662 25.2646 6.94233 23.8889 6.94233 22.1919C6.94233 20.4949 5.56662 19.1192 3.8696 19.1192C2.17258 19.1192 0.796875 20.4949 0.796875 22.1919C0.796875 23.8889 2.17258 25.2646 3.8696 25.2646Z" fill="black"/>
+<path d="M13.0879 15.9327C14.7849 15.9327 16.1606 14.5569 16.1606 12.8599C16.1606 11.1629 14.7849 9.7872 13.0879 9.7872C11.3908 9.7872 10.0151 11.1629 10.0151 12.8599C10.0151 14.5569 11.3908 15.9327 13.0879 15.9327Z" fill="black"/>
+<path d="M13.0879 25.2646C14.7849 25.2646 16.1606 23.8889 16.1606 22.1919C16.1606 20.4949 14.7849 19.1192 13.0879 19.1192C11.3908 19.1192 10.0151 20.4949 10.0151 22.1919C10.0151 23.8889 11.3908 25.2646 13.0879 25.2646Z" fill="black"/>
+<path opacity="0.2" d="M13.0879 6.77137C14.7849 6.77137 16.1606 5.39567 16.1606 3.69865C16.1606 2.00163 14.7849 0.625919 13.0879 0.625919C11.3908 0.625919 10.0151 2.00163 10.0151 3.69865C10.0151 5.39567 11.3908 6.77137 13.0879 6.77137Z" fill="black"/>
+<path opacity="0.2" d="M22.1919 6.77137C23.8889 6.77137 25.2646 5.39567 25.2646 3.69865C25.2646 2.00163 23.8889 0.625919 22.1919 0.625919C20.4948 0.625919 19.1191 2.00163 19.1191 3.69865C19.1191 5.39567 20.4948 6.77137 22.1919 6.77137Z" fill="black"/>
+<path d="M22.1919 15.9327C23.8889 15.9327 25.2646 14.5569 25.2646 12.8599C25.2646 11.1629 23.8889 9.7872 22.1919 9.7872C20.4948 9.7872 19.1191 11.1629 19.1191 12.8599C19.1191 14.5569 20.4948 15.9327 22.1919 15.9327Z" fill="black"/>
+<path opacity="0.2" d="M22.1919 25.2646C23.8889 25.2646 25.2646 23.8889 25.2646 22.1919C25.2646 20.4949 23.8889 19.1192 22.1919 19.1192C20.4948 19.1192 19.1191 20.4949 19.1191 22.1919C19.1191 23.8889 20.4948 25.2646 22.1919 25.2646Z" fill="black"/>
+</g>
+<defs>
+<clipPath id="clip0_13627_11860">
+<rect width="26" height="26" fill="white"/>
+</clipPath>
+</defs>
+</svg>

client/web/src/assets/icons/tailscale-logo.svg

@@ -0,0 +1,20 @@
+<svg width="121" height="22" viewBox="0 0 121 22" fill="none" xmlns="http://www.w3.org/2000/svg">
+<ellipse cx="2.69191" cy="10.7677" rx="2.69191" ry="2.69191" fill="#141414"/>
+<ellipse cx="10.7676" cy="10.7677" rx="2.69191" ry="2.69191" fill="#141414"/>
+<ellipse opacity="0.2" cx="2.69191" cy="18.8434" rx="2.69191" ry="2.69191" fill="#141414"/>
+<circle opacity="0.2" cx="18.8433" cy="18.8434" r="2.69191" fill="#141414"/>
+<ellipse cx="10.7676" cy="18.8434" rx="2.69191" ry="2.69191" fill="#141414"/>
+<circle cx="18.8433" cy="10.7677" r="2.69191" fill="#141414"/>
+<ellipse opacity="0.2" cx="2.69191" cy="2.69191" rx="2.69191" ry="2.69191" fill="#141414"/>
+<ellipse opacity="0.2" cx="10.7676" cy="2.69191" rx="2.69191" ry="2.69191" fill="#141414"/>
+<circle opacity="0.2" cx="18.8433" cy="2.69191" r="2.69191" fill="#141414"/>
+<path d="M37.8847 19.9603C38.6525 19.9603 39.2764 19.8883 40.0202 19.7443V16.9609C39.5643 17.1289 39.0605 17.1769 38.5806 17.1769C37.4048 17.1769 36.9729 16.601 36.9729 15.4973V9.83453H40.0202V7.05116H36.9729V2.92409H33.6137V7.05116H31.4302V9.83453H33.6137V15.8092C33.6137 18.4486 35.0054 19.9603 37.8847 19.9603Z" fill="#141414"/>
+<path d="M45.5064 19.9603C47.306 19.9603 48.5057 19.3604 49.1056 18.4246C49.1536 18.8325 49.2975 19.3844 49.4895 19.7203H52.5128C52.3448 19.1444 52.2249 18.2326 52.2249 17.6328V11.0583C52.2249 8.34687 50.2813 6.81121 46.994 6.81121C44.4986 6.81121 42.555 7.747 41.4753 9.1147L43.3949 11.0103C44.2587 10.0505 45.3624 9.5466 46.7061 9.5466C48.3377 9.5466 49.0576 10.0985 49.0576 10.9143C49.0576 11.6101 48.5777 12.09 45.9863 12.09C43.4908 12.09 40.9714 13.1218 40.9714 16.0011C40.9714 18.6645 42.891 19.9603 45.5064 19.9603ZM46.1782 17.4168C44.8825 17.4168 44.2827 16.8649 44.2827 15.8812C44.2827 15.0174 45.0025 14.4415 46.2022 14.4415C48.1218 14.4415 48.6497 14.3215 49.0576 13.9136V14.9454C49.0576 16.3131 47.9058 17.4168 46.1782 17.4168Z" fill="#141414"/>
+<path d="M54.4086 5.44352H57.9118V2.30023H54.4086V5.44352ZM54.4805 19.7203H57.8398V7.05116H54.4805V19.7203Z" fill="#141414"/>
+<path d="M60.287 19.7203H63.6463V2.68414H60.287V19.7203Z" fill="#141414"/>
+<path d="M70.6285 19.9603C74.3237 19.9603 76.2193 18.0167 76.2193 15.9771C76.2193 14.1296 75.2835 12.7619 72.2122 12.21C70.0527 11.8261 68.709 11.3462 68.709 10.6024C68.709 9.95451 69.4768 9.49861 70.7725 9.49861C71.9242 9.49861 72.884 9.88252 73.6038 10.7223L75.7394 8.92274C74.6596 7.57904 72.884 6.81121 70.7725 6.81121C67.5332 6.81121 65.5177 8.53883 65.5177 10.6503C65.5177 12.9538 67.6292 13.9856 69.9087 14.3935C71.8043 14.7294 72.86 15.0893 72.86 15.9052C72.86 16.601 72.1162 17.1769 70.7005 17.1769C69.3088 17.1769 68.2291 16.529 67.7252 15.5692L64.8938 16.9129C65.5897 18.6405 67.9651 19.9603 70.6285 19.9603Z" fill="#141414"/>
+<path d="M83.7294 19.9603C86.1288 19.9603 87.8564 19.0005 89.1521 16.841L86.4648 15.4733C85.9609 16.481 85.1451 17.1769 83.7294 17.1769C81.5939 17.1769 80.4421 15.4493 80.4421 13.3617C80.4421 11.2742 81.6658 9.59459 83.7294 9.59459C85.0251 9.59459 85.8889 10.2904 86.3928 11.3462L89.1042 9.90652C88.1924 7.91497 86.3928 6.81121 83.7294 6.81121C79.3384 6.81121 77.0829 10.0265 77.0829 13.3617C77.0829 16.9849 79.8183 19.9603 83.7294 19.9603Z" fill="#141414"/>
+<path d="M94.5031 19.9603C96.3027 19.9603 97.5025 19.3604 98.1023 18.4246C98.1503 18.8325 98.2943 19.3844 98.4862 19.7203H101.51C101.342 19.1444 101.222 18.2326 101.222 17.6328V11.0583C101.222 8.34687 99.2781 6.81121 95.9908 6.81121C93.4954 6.81121 91.5518 7.747 90.472 9.1147L92.3916 11.0103C93.2554 10.0505 94.3592 9.5466 95.7029 9.5466C97.3345 9.5466 98.0543 10.0985 98.0543 10.9143C98.0543 11.6101 97.5744 12.09 94.983 12.09C92.4876 12.09 89.9682 13.1218 89.9682 16.0011C89.9682 18.6645 91.8877 19.9603 94.5031 19.9603ZM95.175 17.4168C93.8793 17.4168 93.2794 16.8649 93.2794 15.8812C93.2794 15.0174 93.9992 14.4415 95.199 14.4415C97.1185 14.4415 97.6464 14.3215 98.0543 13.9136V14.9454C98.0543 16.3131 96.9026 17.4168 95.175 17.4168Z" fill="#141414"/>
+<path d="M103.196 19.7203H106.555V2.68414H103.196V19.7203Z" fill="#141414"/>
+<path d="M114.617 19.9603C117.089 19.9603 119.08 18.9765 120.184 17.2249L117.641 15.5932C116.969 16.649 116.081 17.2249 114.617 17.2249C112.962 17.2249 111.762 16.3131 111.45 14.5375H121V13.3617C121 10.0265 118.96 6.81121 114.593 6.81121C110.442 6.81121 108.187 10.0505 108.187 13.3857C108.187 18.1367 111.762 19.9603 114.617 19.9603ZM111.57 11.8981C112.098 10.2904 113.202 9.5466 114.665 9.5466C116.321 9.5466 117.329 10.5304 117.665 11.8981H111.57Z" fill="#141414"/>
+</svg>

client/web/src/assets/icons/user.svg

@@ -0,0 +1,4 @@
+<svg width="15" height="16" viewBox="0 0 15 16" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M12.5 13.625V12.375C12.5 11.712 12.2366 11.0761 11.7678 10.6072C11.2989 10.1384 10.663 9.875 10 9.875H5C4.33696 9.875 3.70107 10.1384 3.23223 10.6072C2.76339 11.0761 2.5 11.712 2.5 12.375V13.625" stroke="#706E6D" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M7.5 7.375C8.88071 7.375 10 6.25571 10 4.875C10 3.49429 8.88071 2.375 7.5 2.375C6.11929 2.375 5 3.49429 5 4.875C5 6.25571 6.11929 7.375 7.5 7.375Z" stroke="#706E6D" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/web/src/assets/icons/x-circle.svg

@@ -0,0 +1,5 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M12 22C17.5228 22 22 17.5228 22 12C22 6.47715 17.5228 2 12 2C6.47715 2 2 6.47715 2 12C2 17.5228 6.47715 22 12 22Z" stroke="red" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M15 9L9 15" stroke="red" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M9 9L15 15" stroke="red" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/web/src/assets/icons/x.svg

@@ -0,0 +1,4 @@
+<svg width="24" height="24" viewBox="0 0 24 24" fill="none" xmlns="http://www.w3.org/2000/svg">
+<path d="M18 6L6 18" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+<path d="M6 6L18 18" stroke-width="2" stroke-linecap="round" stroke-linejoin="round"/>
+</svg>

client/web/src/components/acl-tag.tsx

@@ -0,0 +1,28 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import cx from "classnames"
+import React from "react"
+import Badge from "src/ui/badge"
+
+/**
+ * ACLTag handles the display of an ACL tag.
+ */
+export default function ACLTag({
+  tag,
+  className,
+}: {
+  tag: string
+  className?: string
+}) {
+  return (
+    <Badge
+      variant="status"
+      color="outline"
+      className={cx("flex text-xs items-center", className)}
+    >
+      <span className="font-medium">tag:</span>
+      <span className="text-gray-500">{tag.replace("tag:", "")}</span>
+    </Badge>
+  )
+}

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

@@ -0,0 +1,133 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import * as Primitive from "@radix-ui/react-popover"
+import cx from "classnames"
+import React, { useCallback } from "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"
+import { copyText } from "src/utils/clipboard"
+
+/**
+ * AddressCard renders a clickable IP address text that opens a
+ * dialog with a copyable list of all addresses (IPv4, IPv6, DNS)
+ * for the machine.
+ */
+export default function AddressCard({
+  v4Address,
+  v6Address,
+  shortDomain,
+  fullDomain,
+  className,
+  triggerClassName,
+}: {
+  v4Address: string
+  v6Address: string
+  shortDomain?: string
+  fullDomain?: string
+  className?: string
+  triggerClassName?: string
+}) {
+  const children = (
+    <ul className="flex flex-col divide-y rounded-md overflow-hidden">
+      {shortDomain && <AddressRow label="short domain" value={shortDomain} />}
+      {fullDomain && <AddressRow label="full domain" value={fullDomain} />}
+      {v4Address && (
+        <AddressRow
+          key={v4Address}
+          label="IPv4 address"
+          ip={true}
+          value={v4Address}
+        />
+      )}
+      {v6Address && (
+        <AddressRow
+          key={v6Address}
+          label="IPv6 address"
+          ip={true}
+          value={v6Address}
+        />
+      )}
+    </ul>
+  )
+
+  return (
+    <Primitive.Root>
+      <Primitive.Trigger asChild>
+        <Button
+          variant="minimal"
+          className={cx("-ml-1 px-1 py-0 font-normal", className)}
+          suffixIcon={
+            <ChevronDown className="w-5 h-5" stroke="#232222" /* gray-800 */ />
+          }
+          aria-label="See all addresses for this device."
+        >
+          <NiceIP className={triggerClassName} ip={v4Address ?? v6Address} />
+        </Button>
+      </Primitive.Trigger>
+      <Primitive.Content
+        className="shadow-popover origin-radix-popover state-open:animate-scale-in state-closed:animate-scale-out bg-white rounded-md z-50 max-w-sm"
+        sideOffset={10}
+        side="top"
+      >
+        {children}
+      </Primitive.Content>
+    </Primitive.Root>
+  )
+}
+
+function AddressRow({
+  label,
+  value,
+  ip,
+}: {
+  label: string
+  value: string
+  ip?: boolean
+}) {
+  const toaster = useToaster()
+  const onCopyClick = useCallback(() => {
+    copyText(value)
+      .then(() => toaster.show({ message: `Copied ${label} to clipboard` }))
+      .catch(() =>
+        toaster.show({
+          message: `Failed to copy ${label} to clipboard`,
+          variant: "danger",
+        })
+      )
+  }, [label, toaster, value])
+
+  return (
+    <li className="py flex items-center gap-2">
+      <button
+        className={cx(
+          "relative flex group items-center transition-colors",
+          "focus:outline-none focus-visible:ring",
+          "disabled:text-text-muted enabled:hover:text-gray-500",
+          "w-60 text-sm flex-1"
+        )}
+        onClick={onCopyClick}
+        aria-label={`Copy ${value} to your clip board.`}
+      >
+        <div className="overflow-hidden pl-3 pr-10 py-2 tabular-nums">
+          {ip ? (
+            <NiceIP ip={value} />
+          ) : (
+            <div className="truncate m-w-full">{value}</div>
+          )}
+        </div>
+        <span
+          className={cx(
+            "absolute right-0 pl-6 pr-3 bg-gradient-to-r from-transparent",
+            "text-gray-900 group-hover:text-gray-600"
+          )}
+        >
+          <Copy className="w-4 h-4" />
+        </span>
+      </button>
+    </li>
+  )
+}

client/web/src/components/app.tsx

@@ -0,0 +1,169 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import React from "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"
+import HomeView from "src/components/views/home-view"
+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 } 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"
+import useSWR from "swr"
+import { Link, Route, Router, Switch, useLocation } from "wouter"
+
+export default function App() {
+  const { data: auth, loading: loadingAuth, newSession } = useAuth()
+
+  return (
+    <main className="min-w-sm max-w-lg mx-auto py-4 sm:py-14 px-5">
+      {loadingAuth || !auth ? (
+        <LoadingView />
+      ) : (
+        <WebClient auth={auth} newSession={newSession} />
+      )}
+    </main>
+  )
+}
+
+function WebClient({
+  auth,
+  newSession,
+}: {
+  auth: AuthResponse
+  newSession: () => Promise<void>
+}) {
+  const { data: node } = useSWR<NodeData>("/data")
+
+  return !node ? (
+    <LoadingView />
+  ) : node.Status === "NeedsLogin" ||
+    node.Status === "NoState" ||
+    node.Status === "Stopped" ? (
+    // Client not on a tailnet, render login.
+    <LoginView data={node} />
+  ) : (
+    // Otherwise render the new web client.
+    <>
+      <Router base={node.URLPrefix}>
+        <Header node={node} auth={auth} newSession={newSession} />
+        <Switch>
+          <Route path="/">
+            <HomeView readonly={!auth.canManageNode} node={node} />
+          </Route>
+          <Route path="/details">
+            <DeviceDetailsView readonly={!auth.canManageNode} node={node} />
+          </Route>
+          <FeatureRoute path="/subnets" feature="advertise-routes" node={node}>
+            <SubnetRouterView readonly={!auth.canManageNode} node={node} />
+          </FeatureRoute>
+          <FeatureRoute path="/ssh" feature="ssh" node={node}>
+            <SSHView readonly={!auth.canManageNode} node={node} />
+          </FeatureRoute>
+          {/* <Route path="/serve">Share local content</Route> */}
+          <FeatureRoute path="/update" feature="auto-update" node={node}>
+            <UpdatingView
+              versionInfo={node.ClientVersion}
+              currentVersion={node.IPNVersion}
+            />
+          </FeatureRoute>
+          <Route path="/disconnected">
+            <DisconnectedView />
+          </Route>
+          <Route>
+            <Card className="mt-8">
+              <EmptyState description="Page not found" />
+            </Card>
+          </Route>
+        </Switch>
+      </Router>
+    </>
+  )
+}
+
+/**
+ * FeatureRoute renders a Route component,
+ * but only displays the child view if the specified feature is
+ * available for use on this node's platform. If not available,
+ * a not allowed view is rendered instead.
+ */
+function FeatureRoute({
+  path,
+  node,
+  feature,
+  children,
+}: {
+  path: string
+  node: NodeData
+  feature: Feature
+  children: React.ReactNode
+}) {
+  return (
+    <Route path={path}>
+      {!node.Features[feature] ? (
+        <Card className="mt-8">
+          <EmptyState
+            description={`${featureDescription(
+              feature
+            )} not available on this device.`}
+          />
+        </Card>
+      ) : (
+        children
+      )}
+    </Route>
+  )
+}
+
+function Header({
+  node,
+  auth,
+  newSession,
+}: {
+  node: NodeData
+  auth: AuthResponse
+  newSession: () => Promise<void>
+}) {
+  const [loc] = useLocation()
+
+  if (loc === "/disconnected") {
+    // No header on view presented after logout.
+    return null
+  }
+
+  return (
+    <>
+      <div className="flex flex-wrap gap-4 justify-between items-center mb-9 md:mb-12">
+        <Link to="/" className="flex gap-3 overflow-hidden">
+          <TailscaleIcon />
+          <div className="inline text-gray-800 text-lg font-medium leading-snug truncate">
+            {node.DomainName}
+          </div>
+        </Link>
+        <LoginToggle node={node} auth={auth} newSession={newSession} />
+      </div>
+      {loc !== "/" && loc !== "/update" && (
+        <Link to="/" className="link font-medium block mb-2">
+          &larr; Back to {node.DeviceName}
+        </Link>
+      )}
+    </>
+  )
+}
+
+/**
+ * LoadingView fills its container with small animated loading dots
+ * in the center.
+ */
+export function LoadingView() {
+  return (
+    <LoadingDots className="absolute top-1/2 left-1/2 -translate-x-1/2 -translate-y-1/2" />
+  )
+}

client/web/src/components/control-components.tsx

@@ -0,0 +1,57 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import React from "react"
+import { NodeData } from "src/types"
+
+/**
+ * AdminContainer renders its contents only if the node's control
+ * server has an admin panel.
+ *
+ * TODO(sonia,will): Similarly, this could also hide the contents
+ * if the viewing user is a non-admin.
+ */
+export function AdminContainer({
+  node,
+  children,
+  className,
+}: {
+  node: NodeData
+  children: React.ReactNode
+  className?: string
+}) {
+  if (!node.ControlAdminURL.includes("tailscale.com")) {
+    // Admin panel only exists on Tailscale control servers.
+    return null
+  }
+  return <div className={className}>{children}</div>
+}
+
+/**
+ * AdminLink renders its contents wrapped in a link to the node's control
+ * server admin panel.
+ *
+ * AdminLink is meant for use only inside of a AdminContainer component,
+ * to avoid rendering a link when the node's control server does not have
+ * an admin panel.
+ */
+export function AdminLink({
+  node,
+  children,
+  path,
+}: {
+  node: NodeData
+  children: React.ReactNode
+  path: string // admin path, e.g. "/settings/webhooks"
+}) {
+  return (
+    <a
+      href={`${node.ControlAdminURL}${path}`}
+      className="link"
+      target="_blank"
+      rel="noreferrer"
+    >
+      {children}
+    </a>
+  )
+}

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

@@ -0,0 +1,584 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import cx from "classnames"
+import React, { useCallback, useEffect, useMemo, useRef, useState } from "react"
+import { useAPI } from "src/api"
+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,
+  trimDNSSuffix,
+} from "src/hooks/exit-nodes"
+import { ExitNode, NodeData } from "src/types"
+import Popover from "src/ui/popover"
+import SearchInput from "src/ui/search-input"
+import { useSWRConfig } from "swr"
+
+export default function ExitNodeSelector({
+  className,
+  node,
+  disabled,
+}: {
+  className?: string
+  node: NodeData
+  disabled?: boolean
+}) {
+  const api = useAPI()
+  const [open, setOpen] = useState<boolean>(false)
+  const [selected, setSelected] = useState<ExitNode>(toSelectedExitNode(node))
+  const [pending, setPending] = useState<boolean>(false)
+  const { mutate } = useSWRConfig() // allows for global mutation
+  useEffect(() => setSelected(toSelectedExitNode(node)), [node])
+  useEffect(() => {
+    setPending(
+      node.AdvertisingExitNode && node.AdvertisingExitNodeApproved === false
+    )
+  }, [node])
+
+  const handleSelect = useCallback(
+    (n: ExitNode) => {
+      setOpen(false)
+      if (n.ID === selected.ID) {
+        return // no update
+      }
+      // Eager clear of pending state to avoid UI oddities
+      if (n.ID !== runAsExitNode.ID) {
+        setPending(false)
+      }
+      api({ action: "update-exit-node", data: n })
+
+      // refresh data after short timeout to pick up any pending approval updates
+      setTimeout(() => {
+        mutate("/data")
+      }, 1000)
+    },
+    [api, mutate, selected.ID]
+  )
+
+  const [
+    none, // not using exit nodes
+    advertising, // advertising as exit node
+    using, // using another exit node
+    offline, // selected exit node node is offline
+  ] = useMemo(
+    () => [
+      selected.ID === noExitNode.ID,
+      selected.ID === runAsExitNode.ID,
+      selected.ID !== noExitNode.ID && selected.ID !== runAsExitNode.ID,
+      !selected.Online,
+    ],
+    [selected.ID, selected.Online]
+  )
+
+  return (
+    <div
+      className={cx(
+        "rounded-md",
+        {
+          "bg-red-600": offline,
+          "bg-yellow-400": pending,
+        },
+        className
+      )}
+    >
+      <div
+        className={cx("p-1.5 rounded-md border flex items-stretch gap-1.5", {
+          "border-gray-200": none,
+          "bg-yellow-300 border-yellow-300": advertising && !offline,
+          "bg-blue-500 border-blue-500": using && !offline,
+          "bg-red-500 border-red-500": offline,
+        })}
+      >
+        <Popover
+          open={disabled ? false : open}
+          onOpenChange={setOpen}
+          className="overflow-hidden"
+          side="bottom"
+          sideOffset={0}
+          align="start"
+          content={
+            <ExitNodeSelectorInner
+              node={node}
+              selected={selected}
+              onSelect={handleSelect}
+            />
+          }
+          asChild
+        >
+          <button
+            className={cx("flex-1 px-2 py-1.5 rounded-[1px]", {
+              "bg-white": none,
+              "hover:bg-gray-100": none && !disabled,
+              "bg-yellow-300": advertising && !offline,
+              "hover:bg-yellow-200": advertising && !offline && !disabled,
+              "bg-blue-500": using && !offline,
+              "hover:bg-blue-400": using && !offline && !disabled,
+              "bg-red-500": offline,
+              "hover:bg-red-400": offline && !disabled,
+            })}
+            onClick={() => setOpen(!open)}
+            disabled={disabled}
+          >
+            <p
+              className={cx(
+                "text-gray-500 text-xs text-left font-medium uppercase tracking-wide mb-1",
+                { "opacity-70 text-white": advertising || using }
+              )}
+            >
+              Exit node{offline && " offline"}
+            </p>
+            <div className="flex items-center">
+              <p
+                className={cx("text-gray-800", {
+                  "text-white": advertising || using,
+                })}
+              >
+                {selected.Location && (
+                  <>
+                    <CountryFlag code={selected.Location.CountryCode} />{" "}
+                  </>
+                )}
+                {selected === runAsExitNode
+                  ? "Running as exit node"
+                  : selected.Name}
+              </p>
+              {!disabled && (
+                <ChevronDown
+                  className={cx("ml-1", {
+                    "stroke-gray-800": none,
+                    "stroke-white": advertising || using,
+                  })}
+                />
+              )}
+            </div>
+          </button>
+        </Popover>
+        {!disabled && (advertising || using) && (
+          <button
+            className={cx("px-3 py-2 rounded-sm text-white", {
+              "hover:bg-yellow-200": advertising && !offline,
+              "hover:bg-blue-400": using && !offline,
+              "hover:bg-red-400": offline,
+            })}
+            onClick={(e) => {
+              e.preventDefault()
+              e.stopPropagation()
+              handleSelect(noExitNode)
+            }}
+          >
+            Disable
+          </button>
+        )}
+      </div>
+      {offline && (
+        <p className="text-white p-3">
+          The selected exit node is currently offline. Your internet traffic is
+          blocked until you disable the exit node or select a different one.
+        </p>
+      )}
+      {pending && (
+        <p className="text-white p-3">
+          Pending approval to run as exit node. This device won’t be usable as
+          an exit node until then.
+        </p>
+      )}
+    </div>
+  )
+}
+
+function toSelectedExitNode(data: NodeData): ExitNode {
+  if (data.AdvertisingExitNode) {
+    return runAsExitNode
+  }
+  if (data.UsingExitNode) {
+    // TODO(sonia): also use online status
+    const node = { ...data.UsingExitNode }
+    if (node.Location) {
+      // For mullvad nodes, use location as name.
+      node.Name = `${node.Location.Country}: ${node.Location.City}`
+    } else {
+      // Otherwise use node name w/o DNS suffix.
+      node.Name = trimDNSSuffix(node.Name, data.TailnetName)
+    }
+    return node
+  }
+  return noExitNode
+}
+
+function ExitNodeSelectorInner({
+  node,
+  selected,
+  onSelect,
+}: {
+  node: NodeData
+  selected: ExitNode
+  onSelect: (node: ExitNode) => void
+}) {
+  const [filter, setFilter] = useState<string>("")
+  const { data: exitNodes } = useExitNodes(node, filter)
+  const listRef = useRef<HTMLDivElement>(null)
+
+  const hasNodes = useMemo(
+    () => exitNodes.find((n) => n.nodes.length > 0),
+    [exitNodes]
+  )
+
+  return (
+    <div className="w-[var(--radix-popover-trigger-width)]">
+      <SearchInput
+        name="exit-node-search"
+        className="px-2"
+        inputClassName="w-full py-3 !h-auto border-none rounded-b-none !ring-0"
+        autoFocus
+        autoCorrect="off"
+        autoComplete="off"
+        autoCapitalize="off"
+        placeholder="Search exit nodes…"
+        value={filter}
+        onChange={(e) => {
+          // Jump list to top when search value changes.
+          listRef.current?.scrollTo(0, 0)
+          setFilter(e.target.value)
+        }}
+      />
+      {/* TODO(sonia): use loading spinner when loading useExitNodes */}
+      <div
+        ref={listRef}
+        className="pt-1 border-t border-gray-200 max-h-60 overflow-y-scroll"
+      >
+        {hasNodes ? (
+          exitNodes.map(
+            (group) =>
+              group.nodes.length > 0 && (
+                <div
+                  key={group.id}
+                  className="pb-1 mb-1 border-b last:border-b-0 border-gray-200 last:mb-0"
+                >
+                  {group.name && (
+                    <div className="px-4 py-2 text-gray-500 text-xs font-medium uppercase tracking-wide">
+                      {group.name}
+                    </div>
+                  )}
+                  {group.nodes.map((n) => (
+                    <ExitNodeSelectorItem
+                      key={`${n.ID}-${n.Name}`}
+                      node={n}
+                      onSelect={() => onSelect(n)}
+                      isSelected={selected.ID === n.ID}
+                    />
+                  ))}
+                </div>
+              )
+          )
+        ) : (
+          <div className="text-center truncate text-gray-500 p-5">
+            {filter
+              ? `No exit nodes matching “${filter}”`
+              : "No exit nodes available"}
+          </div>
+        )}
+      </div>
+    </div>
+  )
+}
+
+function ExitNodeSelectorItem({
+  node,
+  isSelected,
+  onSelect,
+}: {
+  node: ExitNode
+  isSelected: boolean
+  onSelect: () => void
+}) {
+  return (
+    <button
+      key={node.ID}
+      className={cx(
+        "w-full px-4 py-2 flex justify-between items-center cursor-pointer hover:bg-gray-100",
+        {
+          "text-gray-400 cursor-not-allowed": !node.Online,
+        }
+      )}
+      onClick={onSelect}
+      disabled={!node.Online}
+    >
+      <div className="w-full">
+        {node.Location && (
+          <>
+            <CountryFlag code={node.Location.CountryCode} />{" "}
+          </>
+        )}
+        <span className="leading-snug">{node.Name}</span>
+      </div>
+      {node.Online || <span className="leading-snug">Offline</span>}
+      {isSelected && <Check className="ml-1" />}
+    </button>
+  )
+}
+
+function CountryFlag({ code }: { code: string }) {
+  return (
+    <>{countryFlags[code.toLowerCase()]}</> || (
+      <span className="font-medium text-gray-500 text-xs">
+        {code.toUpperCase()}
+      </span>
+    )
+  )
+}
+
+const countryFlags: { [countryCode: string]: string } = {
+  ad: "🇦🇩",
+  ae: "🇦🇪",
+  af: "🇦🇫",
+  ag: "🇦🇬",
+  ai: "🇦🇮",
+  al: "🇦🇱",
+  am: "🇦🇲",
+  ao: "🇦🇴",
+  aq: "🇦🇶",
+  ar: "🇦🇷",
+  as: "🇦🇸",
+  at: "🇦🇹",
+  au: "🇦🇺",
+  aw: "🇦🇼",
+  ax: "🇦🇽",
+  az: "🇦🇿",
+  ba: "🇧🇦",
+  bb: "🇧🇧",
+  bd: "🇧🇩",
+  be: "🇧🇪",
+  bf: "🇧🇫",
+  bg: "🇧🇬",
+  bh: "🇧🇭",
+  bi: "🇧🇮",
+  bj: "🇧🇯",
+  bl: "🇧🇱",
+  bm: "🇧🇲",
+  bn: "🇧🇳",
+  bo: "🇧🇴",
+  bq: "🇧🇶",
+  br: "🇧🇷",
+  bs: "🇧🇸",
+  bt: "🇧🇹",
+  bv: "🇧🇻",
+  bw: "🇧🇼",
+  by: "🇧🇾",
+  bz: "🇧🇿",
+  ca: "🇨🇦",
+  cc: "🇨🇨",
+  cd: "🇨🇩",
+  cf: "🇨🇫",
+  cg: "🇨🇬",
+  ch: "🇨🇭",
+  ci: "🇨🇮",
+  ck: "🇨🇰",
+  cl: "🇨🇱",
+  cm: "🇨🇲",
+  cn: "🇨🇳",
+  co: "🇨🇴",
+  cr: "🇨🇷",
+  cu: "🇨🇺",
+  cv: "🇨🇻",
+  cw: "🇨🇼",
+  cx: "🇨🇽",
+  cy: "🇨🇾",
+  cz: "🇨🇿",
+  de: "🇩🇪",
+  dj: "🇩🇯",
+  dk: "🇩🇰",
+  dm: "🇩🇲",
+  do: "🇩🇴",
+  dz: "🇩🇿",
+  ec: "🇪🇨",
+  ee: "🇪🇪",
+  eg: "🇪🇬",
+  eh: "🇪🇭",
+  er: "🇪🇷",
+  es: "🇪🇸",
+  et: "🇪🇹",
+  eu: "🇪🇺",
+  fi: "🇫🇮",
+  fj: "🇫🇯",
+  fk: "🇫🇰",
+  fm: "🇫🇲",
+  fo: "🇫🇴",
+  fr: "🇫🇷",
+  ga: "🇬🇦",
+  gb: "🇬🇧",
+  gd: "🇬🇩",
+  ge: "🇬🇪",
+  gf: "🇬🇫",
+  gg: "🇬🇬",
+  gh: "🇬🇭",
+  gi: "🇬🇮",
+  gl: "🇬🇱",
+  gm: "🇬🇲",
+  gn: "🇬🇳",
+  gp: "🇬🇵",
+  gq: "🇬🇶",
+  gr: "🇬🇷",
+  gs: "🇬🇸",
+  gt: "🇬🇹",
+  gu: "🇬🇺",
+  gw: "🇬🇼",
+  gy: "🇬🇾",
+  hk: "🇭🇰",
+  hm: "🇭🇲",
+  hn: "🇭🇳",
+  hr: "🇭🇷",
+  ht: "🇭🇹",
+  hu: "🇭🇺",
+  id: "🇮🇩",
+  ie: "🇮🇪",
+  il: "🇮🇱",
+  im: "🇮🇲",
+  in: "🇮🇳",
+  io: "🇮🇴",
+  iq: "🇮🇶",
+  ir: "🇮🇷",
+  is: "🇮🇸",
+  it: "🇮🇹",
+  je: "🇯🇪",
+  jm: "🇯🇲",
+  jo: "🇯🇴",
+  jp: "🇯🇵",
+  ke: "🇰🇪",
+  kg: "🇰🇬",
+  kh: "🇰🇭",
+  ki: "🇰🇮",
+  km: "🇰🇲",
+  kn: "🇰🇳",
+  kp: "🇰🇵",
+  kr: "🇰🇷",
+  kw: "🇰🇼",
+  ky: "🇰🇾",
+  kz: "🇰🇿",
+  la: "🇱🇦",
+  lb: "🇱🇧",
+  lc: "🇱🇨",
+  li: "🇱🇮",
+  lk: "🇱🇰",
+  lr: "🇱🇷",
+  ls: "🇱🇸",
+  lt: "🇱🇹",
+  lu: "🇱🇺",
+  lv: "🇱🇻",
+  ly: "🇱🇾",
+  ma: "🇲🇦",
+  mc: "🇲🇨",
+  md: "🇲🇩",
+  me: "🇲🇪",
+  mf: "🇲🇫",
+  mg: "🇲🇬",
+  mh: "🇲🇭",
+  mk: "🇲🇰",
+  ml: "🇲🇱",
+  mm: "🇲🇲",
+  mn: "🇲🇳",
+  mo: "🇲🇴",
+  mp: "🇲🇵",
+  mq: "🇲🇶",
+  mr: "🇲🇷",
+  ms: "🇲🇸",
+  mt: "🇲🇹",
+  mu: "🇲🇺",
+  mv: "🇲🇻",
+  mw: "🇲🇼",
+  mx: "🇲🇽",
+  my: "🇲🇾",
+  mz: "🇲🇿",
+  na: "🇳🇦",
+  nc: "🇳🇨",
+  ne: "🇳🇪",
+  nf: "🇳🇫",
+  ng: "🇳🇬",
+  ni: "🇳🇮",
+  nl: "🇳🇱",
+  no: "🇳🇴",
+  np: "🇳🇵",
+  nr: "🇳🇷",
+  nu: "🇳🇺",
+  nz: "🇳🇿",
+  om: "🇴🇲",
+  pa: "🇵🇦",
+  pe: "🇵🇪",
+  pf: "🇵🇫",
+  pg: "🇵🇬",
+  ph: "🇵🇭",
+  pk: "🇵🇰",
+  pl: "🇵🇱",
+  pm: "🇵🇲",
+  pn: "🇵🇳",
+  pr: "🇵🇷",
+  ps: "🇵🇸",
+  pt: "🇵🇹",
+  pw: "🇵🇼",
+  py: "🇵🇾",
+  qa: "🇶🇦",
+  re: "🇷🇪",
+  ro: "🇷🇴",
+  rs: "🇷🇸",
+  ru: "🇷🇺",
+  rw: "🇷🇼",
+  sa: "🇸🇦",
+  sb: "🇸🇧",
+  sc: "🇸🇨",
+  sd: "🇸🇩",
+  se: "🇸🇪",
+  sg: "🇸🇬",
+  sh: "🇸🇭",
+  si: "🇸🇮",
+  sj: "🇸🇯",
+  sk: "🇸🇰",
+  sl: "🇸🇱",
+  sm: "🇸🇲",
+  sn: "🇸🇳",
+  so: "🇸🇴",
+  sr: "🇸🇷",
+  ss: "🇸🇸",
+  st: "🇸🇹",
+  sv: "🇸🇻",
+  sx: "🇸🇽",
+  sy: "🇸🇾",
+  sz: "🇸🇿",
+  tc: "🇹🇨",
+  td: "🇹🇩",
+  tf: "🇹🇫",
+  tg: "🇹🇬",
+  th: "🇹🇭",
+  tj: "🇹🇯",
+  tk: "🇹🇰",
+  tl: "🇹🇱",
+  tm: "🇹🇲",
+  tn: "🇹🇳",
+  to: "🇹🇴",
+  tr: "🇹🇷",
+  tt: "🇹🇹",
+  tv: "🇹🇻",
+  tw: "🇹🇼",
+  tz: "🇹🇿",
+  ua: "🇺🇦",
+  ug: "🇺🇬",
+  um: "🇺🇲",
+  us: "🇺🇸",
+  uy: "🇺🇾",
+  uz: "🇺🇿",
+  va: "🇻🇦",
+  vc: "🇻🇨",
+  ve: "🇻🇪",
+  vg: "🇻🇬",
+  vi: "🇻🇮",
+  vn: "🇻🇳",
+  vu: "🇻🇺",
+  wf: "🇼🇫",
+  ws: "🇼🇸",
+  xk: "🇽🇰",
+  ye: "🇾🇪",
+  yt: "🇾🇹",
+  za: "🇿🇦",
+  zm: "🇿🇲",
+  zw: "🇿🇼",
+}

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

@@ -0,0 +1,282 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import cx from "classnames"
+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"
+
+export default function LoginToggle({
+  node,
+  auth,
+  newSession,
+}: {
+  node: NodeData
+  auth: AuthResponse
+  newSession: () => Promise<void>
+}) {
+  const [open, setOpen] = useState<boolean>(false)
+
+  return (
+    <Popover
+      className="p-3 bg-white rounded-lg shadow flex flex-col gap-2 max-w-[317px]"
+      content={
+        <LoginPopoverContent node={node} auth={auth} newSession={newSession} />
+      }
+      side="bottom"
+      align="end"
+      open={open}
+      onOpenChange={setOpen}
+      asChild
+    >
+      {!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>
+  )
+}
+
+function LoginPopoverContent({
+  node,
+  auth,
+  newSession,
+}: {
+  node: NodeData
+  auth: AuthResponse
+  newSession: () => Promise<void>
+}) {
+  /**
+   * canConnectOverTS indicates whether the current viewer
+   * is able to hit the node's web client that's being served
+   * at http://${node.IP}:5252. If false, this means that the
+   * viewer must connect to the correct tailnet before being
+   * able to sign in.
+   */
+  const [canConnectOverTS, setCanConnectOverTS] = useState<boolean>(false)
+  const [isRunningCheck, setIsRunningCheck] = useState<boolean>(false)
+
+  // Whether the current page is loaded over HTTPS.
+  // If it is, then the connectivity check to the management client
+  // will fail with a mixed-content error.
+  const isHTTPS = window.location.protocol === "https:"
+
+  const checkTSConnection = useCallback(() => {
+    if (auth.viewerIdentity || isHTTPS) {
+      // Skip the connectivity check if we either already know we're connected over Tailscale,
+      // or know the connectivity check will fail because the current page is loaded over HTTPS.
+      setCanConnectOverTS(true)
+      return
+    }
+    // Otherwise, test connection to the ts IP.
+    if (isRunningCheck) {
+      return // already checking
+    }
+    setIsRunningCheck(true)
+    fetch(`http://${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 (
+    <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">
+              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>
+          ) : !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>
+  )
+}
+
+function SignInButton({
+  auth,
+  onClick,
+}: {
+  auth: AuthResponse
+  onClick: () => void
+}) {
+  return (
+    <Button
+      className={cx("text-center w-full mt-2", {
+        "mb-2": auth.viewerIdentity,
+      })}
+      intent="primary"
+      sizeVariant="small"
+      onClick={onClick}
+    >
+      {auth.viewerIdentity ? "Sign in to confirm identity" : "Sign in"}
+    </Button>
+  )
+}

client/web/src/components/nice-ip.tsx

@@ -0,0 +1,65 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import cx from "classnames"
+import React from "react"
+import { isTailscaleIPv6 } from "src/utils/util"
+
+type Props = {
+  ip: string
+  className?: string
+}
+
+/**
+ * NiceIP displays IP addresses with nice truncation.
+ */
+export default function NiceIP(props: Props) {
+  const { ip, className } = props
+
+  if (!isTailscaleIPv6(ip)) {
+    return <span className={className}>{ip}</span>
+  }
+
+  const [trimmable, untrimmable] = splitIPv6(ip)
+
+  return (
+    <span
+      className={cx("inline-flex justify-start min-w-0 max-w-full", className)}
+    >
+      {trimmable.length > 0 && (
+        <span className="truncate w-fit flex-shrink">{trimmable}</span>
+      )}
+      <span className="flex-grow-0 flex-shrink-0">{untrimmable}</span>
+    </span>
+  )
+}
+
+/**
+ * Split an IPv6 address into two pieces, to help with truncating the middle.
+ * Only exported for testing purposes. Do not use.
+ */
+export function splitIPv6(ip: string): [string, string] {
+  // We want to split the IPv6 address into segments, but not remove the delimiter.
+  // So we inject an invalid IPv6 character ("|") as a delimiter into the string,
+  // then split on that.
+  const parts = ip.replace(/(:{1,2})/g, "|$1").split("|")
+
+  // Then we find the number of end parts that fits within the character limit,
+  // and join them back together.
+  const characterLimit = 12
+  let characterCount = 0
+  let idxFromEnd = 1
+  for (let i = parts.length - 1; i >= 0; i--) {
+    const part = parts[i]
+    if (characterCount + part.length > characterLimit) {
+      break
+    }
+    characterCount += part.length
+    idxFromEnd++
+  }
+
+  const start = parts.slice(0, -idxFromEnd).join("")
+  const end = parts.slice(-idxFromEnd).join("")
+
+  return [start, end]
+}

client/web/src/components/update-available.tsx

@@ -0,0 +1,67 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import React from "react"
+import { VersionInfo } from "src/types"
+import Button from "src/ui/button"
+import Card from "src/ui/card"
+import { useLocation } from "wouter"
+
+export function UpdateAvailableNotification({
+  details,
+}: {
+  details: VersionInfo
+}) {
+  const [, setLocation] = useLocation()
+
+  return (
+    <Card>
+      <h2 className="mb-2">
+        Update available{" "}
+        {details.LatestVersion && `(v${details.LatestVersion})`}
+      </h2>
+      <p className="text-sm mb-1 mt-1">
+        {details.LatestVersion
+          ? `Version ${details.LatestVersion}`
+          : "A new update"}{" "}
+        is now available. <ChangelogText version={details.LatestVersion} />
+      </p>
+      <Button
+        className="mt-3 inline-block"
+        sizeVariant="small"
+        onClick={() => setLocation("/update")}
+      >
+        Update now
+      </Button>
+    </Card>
+  )
+}
+
+// isStableTrack takes a Tailscale version string
+// of form X.Y.Z (or vX.Y.Z) and returns whether
+// it is a stable release (even value of Y)
+// or unstable (odd value of Y).
+// eg. isStableTrack("1.48.0") === true
+// eg. isStableTrack("1.49.112") === false
+function isStableTrack(ver: string): boolean {
+  const middle = ver.split(".")[1]
+  if (middle && Number(middle) % 2 === 0) {
+    return true
+  }
+  return false
+}
+
+export function ChangelogText({ version }: { version?: string }) {
+  if (!version || !isStableTrack(version)) {
+    return null
+  }
+  return (
+    <>
+      Check out the{" "}
+      <a href="https://tailscale.com/changelog/" className="link">
+        release notes
+      </a>{" "}
+      to find out what’s new!
+    </>
+  )
+}

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

@@ -0,0 +1,248 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import cx from "classnames"
+import React from "react"
+import { useAPI } from "src/api"
+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 { NodeData } from "src/types"
+import Button from "src/ui/button"
+import Card from "src/ui/card"
+import Dialog from "src/ui/dialog"
+import QuickCopy from "src/ui/quick-copy"
+import { useLocation } from "wouter"
+
+export default function DeviceDetailsView({
+  readonly,
+  node,
+}: {
+  readonly: boolean
+  node: NodeData
+}) {
+  return (
+    <>
+      <h1 className="mb-10">Device details</h1>
+      <div className="flex flex-col gap-4">
+        <Card noPadding className="-mx-5 p-5 details-card">
+          <div className="flex items-center justify-between">
+            <div className="flex items-center gap-2">
+              <h1>{node.DeviceName}</h1>
+              <div
+                className={cx("w-2.5 h-2.5 rounded-full", {
+                  "bg-emerald-500": node.Status === "Running",
+                  "bg-gray-300": node.Status !== "Running",
+                })}
+              />
+            </div>
+            {!readonly && <DisconnectDialog />}
+          </div>
+        </Card>
+        {node.Features["auto-update"] &&
+          !readonly &&
+          node.ClientVersion &&
+          !node.ClientVersion.RunningLatest && (
+            <UpdateAvailableNotification details={node.ClientVersion} />
+          )}
+        <Card noPadding className="-mx-5 p-5 details-card">
+          <h2 className="mb-2">General</h2>
+          <table>
+            <tbody>
+              <tr className="flex">
+                <td>Managed by</td>
+                <td className="flex gap-1 flex-wrap">
+                  {node.IsTagged
+                    ? node.Tags.map((t) => <ACLTag key={t} tag={t} />)
+                    : node.Profile?.DisplayName}
+                </td>
+              </tr>
+              <tr>
+                <td>Machine name</td>
+                <td>
+                  <QuickCopy
+                    primaryActionValue={node.DeviceName}
+                    primaryActionSubject="machine name"
+                  >
+                    {node.DeviceName}
+                  </QuickCopy>
+                </td>
+              </tr>
+              <tr>
+                <td>OS</td>
+                <td>{node.OS}</td>
+              </tr>
+              <tr>
+                <td>ID</td>
+                <td>
+                  <QuickCopy
+                    primaryActionValue={node.ID}
+                    primaryActionSubject="ID"
+                  >
+                    {node.ID}
+                  </QuickCopy>
+                </td>
+              </tr>
+              <tr>
+                <td>Tailscale version</td>
+                <td>{node.IPNVersion}</td>
+              </tr>
+              <tr>
+                <td>Key expiry</td>
+                <td>
+                  {node.KeyExpired
+                    ? "Expired"
+                    : // TODO: present as relative expiry (e.g. "5 months from now")
+                    node.KeyExpiry
+                    ? new Date(node.KeyExpiry).toLocaleString()
+                    : "No expiry"}
+                </td>
+              </tr>
+            </tbody>
+          </table>
+        </Card>
+        <Card noPadding className="-mx-5 p-5 details-card">
+          <h2 className="mb-2">Addresses</h2>
+          <table>
+            <tbody>
+              <tr>
+                <td>Tailscale IPv4</td>
+                <td>
+                  <QuickCopy
+                    primaryActionValue={node.IPv4}
+                    primaryActionSubject="IPv4 address"
+                  >
+                    {node.IPv4}
+                  </QuickCopy>
+                </td>
+              </tr>
+              <tr>
+                <td>Tailscale IPv6</td>
+                <td>
+                  <QuickCopy
+                    primaryActionValue={node.IPv6}
+                    primaryActionSubject="IPv6 address"
+                  >
+                    <NiceIP ip={node.IPv6} />
+                  </QuickCopy>
+                </td>
+              </tr>
+              <tr>
+                <td>Short domain</td>
+                <td>
+                  <QuickCopy
+                    primaryActionValue={node.DeviceName}
+                    primaryActionSubject="short domain"
+                  >
+                    {node.DeviceName}
+                  </QuickCopy>
+                </td>
+              </tr>
+              <tr>
+                <td>Full domain</td>
+                <td>
+                  <QuickCopy
+                    primaryActionValue={`${node.DeviceName}.${node.TailnetName}`}
+                    primaryActionSubject="full domain"
+                  >
+                    {node.DeviceName}.{node.TailnetName}
+                  </QuickCopy>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+        </Card>
+        <Card noPadding className="-mx-5 p-5 details-card">
+          <h2 className="mb-2">Debug</h2>
+          <table>
+            <tbody>
+              <tr>
+                <td>TUN Mode</td>
+                <td>{node.TUNMode ? "Yes" : "No"}</td>
+              </tr>
+              {node.IsSynology && (
+                <tr>
+                  <td>Synology Version</td>
+                  <td>{node.DSMVersion}</td>
+                </tr>
+              )}
+            </tbody>
+          </table>
+        </Card>
+        <footer className="text-gray-500 text-sm leading-tight text-center">
+          <Control.AdminContainer node={node}>
+            Want even more details? Visit{" "}
+            <Control.AdminLink node={node} path={`/machines/${node.IPv4}`}>
+              this device’s page
+            </Control.AdminLink>{" "}
+            in the admin console.
+          </Control.AdminContainer>
+          <p className="mt-12">
+            <a
+              className="link"
+              href={node.LicensesURL}
+              target="_blank"
+              rel="noreferrer"
+            >
+              Acknowledgements
+            </a>{" "}
+            ·{" "}
+            <a
+              className="link"
+              href="https://tailscale.com/privacy-policy/"
+              target="_blank"
+              rel="noreferrer"
+            >
+              Privacy Policy
+            </a>{" "}
+            ·{" "}
+            <a
+              className="link"
+              href="https://tailscale.com/terms/"
+              target="_blank"
+              rel="noreferrer"
+            >
+              Terms of Service
+            </a>
+          </p>
+          <p className="my-2">
+            WireGuard is a registered trademark of Jason A. Donenfeld.
+          </p>
+          <p>
+            © {new Date().getFullYear()} Tailscale Inc. All rights reserved.
+            Tailscale is a registered trademark of Tailscale Inc.
+          </p>
+        </footer>
+      </div>
+    </>
+  )
+}
+
+function DisconnectDialog() {
+  const api = useAPI()
+  const [, setLocation] = useLocation()
+
+  return (
+    <Dialog
+      className="max-w-md"
+      title="Log out"
+      trigger={<Button sizeVariant="small">Log out…</Button>}
+    >
+      <Dialog.Form
+        cancelButton
+        submitButton="Log out"
+        destructive
+        onSubmit={() => {
+          api({ action: "logout" })
+          setLocation("/disconnected")
+        }}
+      >
+        Logging out of this device will disconnect it from your tailnet and
+        expire its node key. You won’t be able to use this web interface until
+        you re-authenticate the device from either the Tailscale app or the
+        Tailscale command line interface.
+      </Dialog.Form>
+    </Dialog>
+  )
+}

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

@@ -0,0 +1,21 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import React from "react"
+import { ReactComponent as TailscaleIcon } from "src/assets/icons/tailscale-icon.svg"
+
+/**
+ * DisconnectedView is rendered after node logout.
+ */
+export default function DisconnectedView() {
+  return (
+    <>
+      <TailscaleIcon className="mx-auto" />
+      <p className="mt-12 text-center text-text-muted">
+        You logged out of this device. To reconnect it you will have to
+        re-authenticate the device from either the Tailscale app or the
+        Tailscale command line interface.
+      </p>
+    </>
+  )
+}

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

@@ -0,0 +1,184 @@
+// Copyright (c) Tailscale Inc & AUTHORS
+// SPDX-License-Identifier: BSD-3-Clause
+
+import cx from "classnames"
+import React, { useMemo } from "react"
+import { apiFetch } from "src/api"
+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 { 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,
+}: {
+  readonly: boolean
+  node: NodeData
+}) {
+  const [allSubnetRoutes, pendingSubnetRoutes] = useMemo(
+    () => [
+      node.AdvertisedRoutes?.length,
+      node.AdvertisedRoutes?.filter((r) => !r.Approved).length,
+    ],
+    [node.AdvertisedRoutes]
+  )
+
+  return (
+    <div className="mb-12 w-full">
+      <h2 className="mb-3">This device</h2>
+      <Card noPadding className="-mx-5 p-5 mb-9">
+        <div className="flex justify-between items-center text-lg mb-5">
+          <Link className="flex items-center" to="/details">
+            <div className="w-10 h-10 bg-gray-100 rounded-full justify-center items-center inline-flex">
+              <Machine />
+            </div>
+            <div className="ml-3">
+              <div className="text-gray-800 text-lg font-medium leading-snug">
+                {node.DeviceName}
+              </div>
+              <p className="text-gray-500 text-sm leading-[18.20px] flex items-center gap-2">
+                <span
+                  className={cx("w-2 h-2 inline-block rounded-full", {
+                    "bg-green-300": node.Status === "Running",
+                    "bg-gray-300": node.Status !== "Running",
+                  })}
+                />
+                {node.Status === "Running" ? "Connected" : "Offline"}
+              </p>
+            </div>
+          </Link>
+          <AddressCard
+            className="-mr-2"
+            triggerClassName="relative text-gray-800 text-lg leading-[25.20px]"
+            v4Address={node.IPv4}
+            v6Address={node.IPv6}
+            shortDomain={node.DeviceName}
+            fullDomain={`${node.DeviceName}.${node.TailnetName}`}
+          />
+        </div>
+        {(node.Features["advertise-exit-node"] ||
+          node.Features["use-exit-node"]) && (
+          <ExitNodeSelector className="mb-5" node={node} disabled={readonly} />
+        )}
+        <Link
+          className="link font-medium"
+          to="/details"
+          onClick={() => apiFetch("/device-details-click", "POST")}
+        >
+          View device details &rarr;
+        </Link>
+      </Card>
+      <h2 className="mb-3">Settings</h2>
+      <div className="grid gap-3">
+        {node.Features["advertise-routes"] && (
+          <SettingsCard
+            link="/subnets"
+            title="Subnet router"
+            body="Add devices to your tailnet without installing Tailscale on them."
+            badge={
+              allSubnetRoutes
+                ? {
+                    text: `${allSubnetRoutes} ${pluralize(
+                      "route",
+                      "routes",
+                      allSubnetRoutes
+                    )}`,
+                  }
+                : undefined
+            }
+            footer={
+              pendingSubnetRoutes
+                ? `${pendingSubnetRoutes} ${pluralize(
+                    "route",
+                    "routes",
+                    pendingSubnetRoutes
+                  )} pending approval`
+                : undefined
+            }
+          />
+        )}
+        {node.Features["ssh"] && (
+          <SettingsCard
+            link="/ssh"
+            title="Tailscale SSH server"
+            body="Run a Tailscale SSH server on this device and allow other devices in your tailnet to SSH into it."
+            badge={
+              node.RunningSSHServer
+                ? {
+                    text: "Running",
+                    icon: <div className="w-2 h-2 bg-green-300 rounded-full" />,
+                  }
+                : undefined
+            }
+          />
+        )}
+        {/* TODO(sonia,will): hiding unimplemented settings pages until implemented */}
+        {/* <SettingsCard
+        link="/serve"
+        title="Share local content"
+        body="Share local ports, services, and content to your Tailscale network or to the broader internet."
+      /> */}
+      </div>
+    </div>
+  )
+}
+
+function SettingsCard({
+  title,
+  link,
+  body,
+  badge,
+  footer,
+  className,
+}: {
+  title: string
+  link: string
+  body: string
+  badge?: {
+    text: string
+    icon?: JSX.Element
+  }
+  footer?: string
+  className?: string
+}) {
+  const [, setLocation] = useLocation()
+
+  return (
+    <button onClick={() => setLocation(link)}>
+      <Card noPadding className={cx("-mx-5 p-5", className)}>
+        <div className="flex justify-between items-center">
+          <div>
+            <div className="flex gap-2">
+              <p className="text-gray-800 font-medium leading-tight mb-2">
+                {title}
+              </p>
+              {badge && (
+                <div className="h-5 px-2 bg-gray-100 rounded-full flex items-center gap-2">
+                  {badge.icon}
+                  <div className="text-gray-500 text-xs font-medium">
+                    {badge.text}
+                  </div>
+                </div>
+              )}
+            </div>
+            <p className="text-gray-500 text-sm leading-tight">{body}</p>
+          </div>
+          <div>
+            <ArrowRight className="ml-3" />
+          </div>
+        </div>
+        {footer && (
+          <>
+            <hr className="my-3" />
+            <div className="text-gray-500 text-sm leading-tight">{footer}</div>
+          </>
+        )}
+      </Card>
+    </button>
+  )
+}