Update README to remove old asset

Removed outdated asset links from README.
Claude demo
2026-11-09 05:19:35 -10:00 · 2026-10-26 14:19:01 -04:00 · 2026-10-26 14:15:26 -04:00 · 2026-10-26 13:47:15 -04:00 · 2026-10-26 13:00:37 -04:00 · 2026-10-26 12:17:55 -04:00
80 changed files with 3603 additions and 357 deletions
@@ -0,0 +1,3 @@
+- name: Set the telemetry key
+  shell: bash
+  run: echo "FIREWALL_POSTHOG_KEY=${{ secrets.FIREWALL_POSTHOG_KEY }}" >> "$GITHUB_ENV"
@@ -0,0 +1,55 @@
+name: Build Firewall.pkg
+
+on:
+  workflow_call:
+    inputs:
+      plan:
+        required: true
+        type: string
+
+jobs:
+  pkg:
+    runs-on: macos-26
+    env:
+      TEAM: ${{ vars.APPLE_TEAM }}
+      NOTARY_PROFILE: firewall
+      FIREWALL_POSTHOG_KEY: ${{ secrets.FIREWALL_POSTHOG_KEY }}
+    steps:
+      - uses: actions/checkout@v6
+        with:
+          persist-credentials: false
+      - run: brew install xcodegen
+      - name: Install signing identities, profiles and notary key
+        env:
+          CERTIFICATES: ${{ secrets.MACOS_CERTIFICATES }}
+          CERTIFICATES_PASSWORD: ${{ secrets.MACOS_CERTIFICATES_PASSWORD }}
+          APP_PROFILE: ${{ secrets.MACOS_APP_PROFILE }}
+          EXTENSION_PROFILE: ${{ secrets.MACOS_EXTENSION_PROFILE }}
+          NOTARY_KEY: ${{ secrets.NOTARY_KEY }}
+          NOTARY_KEY_ID: ${{ secrets.NOTARY_KEY_ID }}
+          NOTARY_ISSUER: ${{ secrets.NOTARY_ISSUER }}
+        run: |
+          keychain="$RUNNER_TEMP/signing.keychain-db"
+          security create-keychain -p "" "$keychain"
+          security set-keychain-settings "$keychain"
+          security unlock-keychain -p "" "$keychain"
+          security default-keychain -s "$keychain"
+          security list-keychains -d user -s "$keychain" login.keychain
+          base64 --decode <<<"$CERTIFICATES" > "$RUNNER_TEMP/certificates.p12"
+          security import "$RUNNER_TEMP/certificates.p12" -k "$keychain" -P "$CERTIFICATES_PASSWORD" \
+            -T /usr/bin/codesign -T /usr/bin/pkgbuild
+          security set-key-partition-list -S apple-tool:,apple: -s -k "" "$keychain" >/dev/null
+
+          profiles="$HOME/Library/Developer/Xcode/UserData/Provisioning Profiles"
+          mkdir -p "$profiles"
+          base64 --decode <<<"$APP_PROFILE" > "$profiles/app.provisionprofile"
+          base64 --decode <<<"$EXTENSION_PROFILE" > "$profiles/extension.provisionprofile"
+
+          printf '%s' "$NOTARY_KEY" > "$RUNNER_TEMP/notary.p8"
+          xcrun notarytool store-credentials "$NOTARY_PROFILE" \
+            --key "$RUNNER_TEMP/notary.p8" --key-id "$NOTARY_KEY_ID" --issuer "$NOTARY_ISSUER"
+      - run: macos/build.sh
+      - uses: actions/upload-artifact@v7
+        with:
+          name: artifacts-macos-pkg
+          path: macos/build/Firewall.pkg
@@ -0,0 +1,40 @@
+name: Rewrite release notes
+
+on:
+  workflow_call:
+    inputs:
+      plan:
+        required: true
+        type: string
+
+jobs:
+  notes:
+    runs-on: ubuntu-22.04
+    env:
+      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+      TAG: ${{ fromJson(inputs.plan).announcement_tag }}
+    steps:
+      - run: |
+          url="https://github.com/${{ github.repository }}/releases/download/$TAG"
+          cat > notes.md <<NOTES
+          ## macOS
+
+          [Firewall.pkg]($url/Firewall.pkg)
+
+          ## Windows
+
+          [strix-firewall-x86_64-pc-windows-msvc.msi]($url/strix-firewall-x86_64-pc-windows-msvc.msi)
+
+          ## Command line
+
+          **Command-line installs do not include machine-wide screening.**
+
+          \`\`\`sh
+          curl --proto '=https' --tlsv1.2 -LsSf $url/strix-firewall-installer.sh | sh
+          \`\`\`
+
+          \`\`\`sh
+          powershell -ExecutionPolicy Bypass -c "irm $url/strix-firewall-installer.ps1 | iex"
+          \`\`\`
+          NOTES
+          gh release edit "$TAG" --repo "${{ github.repository }}" --notes-file notes.md
@@ -127,6 +127,9 @@ jobs:
            curl --proto '=https' --tlsv1.2 -sSf https://sh.rustup.rs | sh -s -- -y
            echo "$HOME/.cargo/bin" >> $GITHUB_PATH
          fi
+      - name: "Set the telemetry key"
+        run: "echo \"FIREWALL_POSTHOG_KEY=${{ secrets.FIREWALL_POSTHOG_KEY }}\" >> \"$GITHUB_ENV\""
+        shell: "bash"
      - name: Install dist
        run: ${{ matrix.install_dist.run }}
      # Get the dist-manifest
@@ -211,14 +214,24 @@ jobs:
          path: |
            ${{ steps.cargo-dist.outputs.paths }}
            ${{ env.BUILD_MANIFEST_NAME }}
+
+  custom-build-macos-pkg:
+    needs:
+      - plan
+      - build-local-artifacts
+    uses: ./.github/workflows/build-macos-pkg.yml
+    with:
+      plan: ${{ needs.plan.outputs.val }}
+    secrets: inherit
  # Determines if we should publish/announce
  host:
    needs:
      - plan
      - build-local-artifacts
      - build-global-artifacts
+      - custom-build-macos-pkg
    # Only run if we're "publishing", and only if plan, local and global didn't fail (skipped is fine)
-    if: ${{ always() && needs.plan.result == 'success' && needs.plan.outputs.publishing == 'true' && (needs.build-global-artifacts.result == 'skipped' || needs.build-global-artifacts.result == 'success') && (needs.build-local-artifacts.result == 'skipped' || needs.build-local-artifacts.result == 'success') }}
+    if: ${{ always() && needs.plan.result == 'success' && needs.plan.outputs.publishing == 'true' && (needs.build-global-artifacts.result == 'skipped' || needs.build-global-artifacts.result == 'success') && (needs.custom-build-macos-pkg.result == 'skipped' || needs.custom-build-macos-pkg.result == 'success') && (needs.build-local-artifacts.result == 'skipped' || needs.build-local-artifacts.result == 'success') }}
    env:
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
    runs-on: "ubuntu-22.04"
@@ -278,52 +291,6 @@ jobs:

          gh release create "${{ needs.plan.outputs.tag }}" --target "$RELEASE_COMMIT" $PRERELEASE_FLAG --title "$ANNOUNCEMENT_TITLE" --notes-file "$RUNNER_TEMP/notes.txt" artifacts/*

-  publish-homebrew-formula:
-    needs:
-      - plan
-      - host
-    runs-on: "ubuntu-22.04"
-    env:
-      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      PLAN: ${{ needs.plan.outputs.val }}
-      GITHUB_USER: "axo bot"
-      GITHUB_EMAIL: "[email protected]"
-    if: ${{ !fromJson(needs.plan.outputs.val).announcement_is_prerelease || fromJson(needs.plan.outputs.val).publish_prereleases }}
-    steps:
-      - uses: actions/checkout@v6
-        with:
-          persist-credentials: true
-          repository: "usestrix/homebrew-tap"
-          token: ${{ secrets.HOMEBREW_TAP_TOKEN }}
-      # So we have access to the formula
-      - name: Fetch homebrew formulae
-        uses: actions/download-artifact@v8
-        with:
-          pattern: artifacts-*
-          path: Formula/
-          merge-multiple: true
-      # This is extra complex because you can make your Formula name not match your app name
-      # so we need to find releases with a *.rb file, and publish with that filename.
-      - name: Commit formula files
-        run: |
-          git config --global user.name "${GITHUB_USER}"
-          git config --global user.email "${GITHUB_EMAIL}"
-
-          for release in $(echo "$PLAN" | jq --compact-output '.releases[] | select([.artifacts[] | endswith(".rb")] | any)'); do
-            filename=$(echo "$release" | jq '.artifacts[] | select(endswith(".rb"))' --raw-output)
-            name=$(echo "$filename" | sed "s/\.rb$//")
-            version=$(echo "$release" | jq .app_version --raw-output)
-
-            export PATH="/home/linuxbrew/.linuxbrew/bin:$PATH"
-            brew update
-            # We avoid reformatting user-provided data such as the app description and homepage.
-            brew style --except-cops FormulaAudit/Homepage,FormulaAudit/Desc,FormulaAuditStrict --fix "Formula/${filename}" || true
-
-            git add "Formula/${filename}"
-            git commit -m "${name} ${version}"
-          done
-          git push
-
  custom-publish-crates:
    needs:
      - plan
@@ -335,19 +302,17 @@ jobs:
    secrets: inherit
    # publish jobs get escalated permissions
    permissions:
-      "id-token": "write"
-      "packages": "write"
+      "contents": "read"

  announce:
    needs:
      - plan
      - host
-      - publish-homebrew-formula
      - custom-publish-crates
    # use "always() && ..." to allow us to wait for all publish jobs while
    # still allowing individual publish jobs to skip themselves (for prereleases).
    # "host" however must run to completion, no skipping allowed!
-    if: ${{ always() && needs.host.result == 'success' && (needs.publish-homebrew-formula.result == 'skipped' || needs.publish-homebrew-formula.result == 'success') && (needs.custom-publish-crates.result == 'skipped' || needs.custom-publish-crates.result == 'success') }}
+    if: ${{ always() && needs.host.result == 'success' && (needs.custom-publish-crates.result == 'skipped' || needs.custom-publish-crates.result == 'success') }}
    runs-on: "ubuntu-22.04"
    env:
      GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
@@ -356,3 +321,12 @@ jobs:
        with:
          persist-credentials: false
          submodules: recursive
+
+  custom-release-notes:
+    needs:
+      - plan
+      - announce
+    uses: ./.github/workflows/release-notes.yml
+    with:
+      plan: ${{ needs.plan.outputs.val }}
+    secrets: inherit
@@ -0,0 +1,95 @@
+# Strix's Dependency Firewall
+
+Stops malicious packages before they install. Built by [Strix](https://strix.ai): read [the blogpost](https://www.strix.ai/blog/firewall-announcement).
+
+Screening runs on your device: downloads go straight to the registry, never through a Strix server.
+Each package's name and version are looked up [Strix's malicious-package blocklist](https://github.com/usestrix/firewall-blocklist), so installs are blocked system-wide *before* reaching your machine.
+
+https://github.com/user-attachments/assets/835411b1-5c89-409f-b98a-cb238310429c
+
+## Install
+
+**Machine-wide**, from the [latest release](https://github.com/usestrix/firewall/releases/latest):
+
+- macOS: open `Firewall.pkg`, then approve the extension when macOS asks.
+- Windows: run the `.msi` as an admin.
+
+**Prefix-mode**
+
+cargo:
+```sh
+cargo install strix-firewall
+```
+
+curl: 
+```sh
+curl -LsSf https://github.com/usestrix/firewall/releases/latest/download/strix-firewall-installer.sh | sh
+```
+
+Powershell:
+```powershell
+powershell -c "irm https://github.com/usestrix/firewall/releases/latest/download/strix-firewall-installer.ps1 | iex"
+```
+
+## Platforms
+
+| | Machine-wide | Command prefix |
+|---|---|---|
+| macOS 13+ | ✅ Apple silicon or T2 chip | ✅ |
+| Windows 10/11, x86-64 | ✅ with a TPM 2.0 | ✅ |
+| Linux (glibc 2.35+), x86-64 or arm64 | 🚧 Coming Soon | ✅ |
+
+## Supported registries
+
+| Registry | Package managers |
+|---|---|
+| npm | npm, pnpm, bun |
+| PyPI | pip, uv, pdm, pipenv |
+| crates.io | cargo |
+| Go module proxy | go |
+| RubyGems | gem |
+
+Mirrors of these, such as Artifactory or Nexus, can be added in via a config file.
+
+## Features
+
+- **Up-to-the-minute data:** Strix constantly monitors updates to top packages (covering 99% of installed packages) to scan for malware, and publishes the results. We also consult [OSSF's blocklist](https://github.com/ossf/malicious-packages) and [OSV](osv.dev), as well as other public reports. Updates take effect without any user action.
+- **Holds back new versions.** New packages are blocked by default, since malware is usually detected within a day. (Although this can be disabled, configured, and bypassed).
+- **Alerts you.** On macOS and Windows a popup names the blocked package and links its advisory.
+- **Two modes:**
+  - **Machine-wide:** screens downloads from every app, across your entire machine.
+  - **Command prefix:** e.g., `firewall npm install left-pad`, or create an alias with `alias npm='firewall npm`.
+
+## Configuration
+
+Settings are in a `config.json`:
+
+- Machine-wide: `/Library/Application Support/Firewall/` on macOS, `%ProgramData%\Strix Firewall\`
+  on Windows. Only an admin can edit it; restart from the menu bar or tray to apply.
+- Command prefix: `~/.config/firewall/` on Linux, `~/Library/Application Support/com.usestrix.firewall/`
+  on macOS, `%APPDATA%\usestrix\firewall\config\` on Windows.
+
+```json
+{
+  "min_age_hours": 48,
+  "allow": { "npm": [{ "name": "left-pad", "version": "1.3.0" }] },
+  "registries": {
+    "npm": ["https://npm.example.com/"],
+    "pypi": ["https://pypi.example.com/"]
+  },
+  "telemetry": false
+}
+```
+
+| Key | Default | |
+|---|---|---|
+| `min_age_hours` | `24` | How long new versions are held back. `0` turns this off. |
+| `allow` | none | Packages exempt from the hold, by ecosystem (`npm`, `pypi`, `cargo`, `gem`, `go`). Omit `version` for every version. Known malware is still blocked. |
+| `registries` | none | Mirrors, by the registry they copy (`npm`, `pypi`, `gem`, `go`, `cargo/index`). Both modes screen every mirror listed; command-prefix mode also downloads from the first one. |
+| `fail_open` | `true` | Allow a package when it can't be checked. |
+| `telemetry` | `true` | Log anonymized usage events to Strix. |
+| `port` | `8080` | Local port for command-prefix mode. |
+
+## License
+
+Apache 2.0. See [LICENSE](LICENSE).
@@ -172,6 +172,17 @@ dependencies = [
 "pin-project-lite",
 ]

+[[package]]
+name = "async-trait"
+version = "0.1.92"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "82f6aeea286b8eb4dd3431a1be1b59d290ace00f5bfd8e2a159bc2a05e2c1667"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 3.0.6",
+]
+
 [[package]]
 name = "asynk-strim"
 version = "0.1.5"
@@ -250,6 +261,15 @@ dependencies = [
 "hybrid-array",
 ]

+[[package]]
+name = "block2"
+version = "0.6.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "cdeb9d870516001442e364c5220d3574d2da8dc765554b4a617230d33fa58ef5"
+dependencies = [
+ "objc2",
+]
+
 [[package]]
 name = "borsh"
 version = "1.8.1"
@@ -456,6 +476,16 @@ dependencies = [
 "unicode-xid",
 ]

+[[package]]
+name = "core-foundation"
+version = "0.9.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "91e195e091a93c46f7102ec7818a2aa394e1e1771c3ab4825963fa03e45afb8f"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "core-foundation"
 version = "0.10.1"
@@ -496,6 +526,12 @@ dependencies = [
 "cfg-if",
 ]

+[[package]]
+name = "critical-section"
+version = "1.2.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "790eea4361631c5e7d22598ecd5723ff611904e3344ce8720784c93e3d83d40b"
+
 [[package]]
 name = "crossbeam-channel"
 version = "0.5.17"
@@ -642,6 +678,16 @@ dependencies = [
 "windows-sys 0.61.2",
 ]

+[[package]]
+name = "dispatch2"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e0e367e4e7da84520dedcac1901e4da967309406d1e51017ae1abfb97adbd38"
+dependencies = [
+ "bitflags 2.13.2",
+ "objc2",
+]
+
 [[package]]
 name = "displaydoc"
 version = "0.2.7"
@@ -653,12 +699,32 @@ dependencies = [
 "syn 3.0.6",
 ]

+[[package]]
+name = "dpi"
+version = "0.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d8b14ccef22fc6f5a8f4d7d768562a182c04ce9a3b3157b91390b52ddfdf1a76"
+
 [[package]]
 name = "either"
 version = "1.18.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "252afb9ae5eaa683babdc6a068b3f5726eb19e05070c731f9b2a23a7c3e8ed34"

+[[package]]
+name = "embed-resource"
+version = "3.0.12"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6168487b5e7eb2673e6efe1200b1848016e436a6ca0b8031bf04bd9d493a249f"
+dependencies = [
+ "cc",
+ "memchr",
+ "rustc_version",
+ "toml",
+ "vswhom",
+ "winreg",
+]
+
 [[package]]
 name = "encoding_rs"
 version = "0.8.42"
@@ -724,6 +790,15 @@ dependencies = [
 "getrandom 0.4.3",
 ]

+[[package]]
+name = "fdeflate"
+version = "0.3.7"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e6853b52649d4ac5c0bd02320cddc5ba956bdb407c4b75a2c6b75bf51500f8c"
+dependencies = [
+ "simd-adler32",
+]
+
 [[package]]
 name = "find-msvc-tools"
 version = "0.1.13"
@@ -744,7 +819,7 @@ checksum = "6e634e2e0ebac1ee034020da1ca582e17ffe4e0f5e985823721e168928136dcb"
 dependencies = [
 "crc32fast",
 "libz-sys",
- "miniz_oxide",
+ "miniz_oxide 0.9.1",
 "zlib-rs",
 ]

@@ -997,6 +1072,78 @@ version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "7f24254aa9a54b5c858eaee2f5bccdb46aaf0e486a595ed5fd8f86ba55232a70"

+[[package]]
+name = "hickory-net"
+version = "0.26.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "c480823ed7c2c5d0f09c41020cb6b7c28029ce60ec42dc942158dcf22f8e0a4d"
+dependencies = [
+ "async-trait",
+ "cfg-if",
+ "data-encoding",
+ "futures-channel",
+ "futures-io",
+ "futures-util",
+ "hickory-proto",
+ "idna",
+ "ipnet",
+ "jni",
+ "rand",
+ "thiserror",
+ "tinyvec",
+ "tokio",
+ "tracing",
+ "url",
+]
+
+[[package]]
+name = "hickory-proto"
+version = "0.26.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "12b92608f679a6fa515dd1d15c1ff89443026e391200a2c840c7afcba482893d"
+dependencies = [
+ "data-encoding",
+ "idna",
+ "ipnet",
+ "jni",
+ "once_cell",
+ "prefix-trie",
+ "rand",
+ "ring",
+ "serde",
+ "thiserror",
+ "tinyvec",
+ "tracing",
+ "url",
+]
+
+[[package]]
+name = "hickory-resolver"
+version = "0.26.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f3da5255c95d5a716857d54b5b8f4e8d67c3484d3beaaaae2ce25063b3ba981"
+dependencies = [
+ "cfg-if",
+ "futures-util",
+ "hickory-net",
+ "hickory-proto",
+ "ipconfig",
+ "ipnet",
+ "jni",
+ "moka",
+ "ndk-context",
+ "once_cell",
+ "parking_lot",
+ "rand",
+ "resolv-conf",
+ "serde",
+ "smallvec",
+ "system-configuration",
+ "thiserror",
+ "tokio",
+ "tracing",
+]
+
 [[package]]
 name = "http"
 version = "1.5.0"
@@ -1158,6 +1305,19 @@ dependencies = [
 "hashbrown 0.17.1",
 ]

+[[package]]
+name = "ipconfig"
+version = "0.3.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4d40460c0ce33d6ce4b0630ad68ff63d6661961c48b6dba35e5a4d81cfb48222"
+dependencies = [
+ "socket2",
+ "widestring",
+ "windows-registry",
+ "windows-result",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "ipnet"
 version = "2.12.2"
@@ -1340,6 +1500,16 @@ dependencies = [
 "wasm-bindgen",
 ]

+[[package]]
+name = "keyboard-types"
+version = "0.8.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "0fbe853b403ae61a04233030ae8a79d94975281ed9770a1f9e246732b534b28d"
+dependencies = [
+ "bitflags 2.13.2",
+ "serde",
+]
+
 [[package]]
 name = "konst"
 version = "0.2.20"
@@ -1483,6 +1653,16 @@ version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "68354c5c6bd36d73ff3feceb05efa59b6acb7626617f4962be322a825e61f79a"

+[[package]]
+name = "miniz_oxide"
+version = "0.8.9"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1fa76a2c86f704bdb222d66965fb3d63269ce38518b83cb0575fca855ebb6316"
+dependencies = [
+ "adler2",
+ "simd-adler32",
+]
+
 [[package]]
 name = "miniz_oxide"
 version = "0.9.1"
@@ -1524,6 +1704,24 @@ dependencies = [
 "uuid",
 ]

+[[package]]
+name = "muda"
+version = "0.21.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4340e89c178916e62879c5c36b7f699019369be413e496178a6983ce91b8bc03"
+dependencies = [
+ "crossbeam-channel",
+ "dpi",
+ "keyboard-types",
+ "objc2",
+ "objc2-app-kit",
+ "objc2-core-foundation",
+ "objc2-foundation",
+ "png",
+ "thiserror",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "multer"
 version = "3.1.0"
@@ -1630,6 +1828,66 @@ dependencies = [
 "autocfg",
 ]

+[[package]]
+name = "objc2"
+version = "0.6.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "08849bbd4767dfae9457696856ae1c84fe4e0281bbe4a7abff2d0e06fb7981f8"
+dependencies = [
+ "objc2-encode",
+]
+
+[[package]]
+name = "objc2-app-kit"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "d49e936b501e5c5bf01fda3a9452ff86dc3ea98ad5f283e1455153142d97518c"
+dependencies = [
+ "bitflags 2.13.2",
+ "objc2",
+ "objc2-core-foundation",
+ "objc2-foundation",
+]
+
+[[package]]
+name = "objc2-core-foundation"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2a180dd8642fa45cdb7dd721cd4c11b1cadd4929ce112ebd8b9f5803cc79d536"
+dependencies = [
+ "bitflags 2.13.2",
+ "dispatch2",
+ "objc2",
+]
+
+[[package]]
+name = "objc2-core-graphics"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e022c9d066895efa1345f8e33e584b9f958da2fd4cd116792e15e07e4720a807"
+dependencies = [
+ "bitflags 2.13.2",
+ "objc2-core-foundation",
+]
+
+[[package]]
+name = "objc2-encode"
+version = "4.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ef25abbcd74fb2609453eb695bd2f860d389e457f67dc17cafc8b8cbc89d0c33"
+
+[[package]]
+name = "objc2-foundation"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e3e0adef53c21f888deb4fa59fc59f7eb17404926ee8a6f59f5df0fd7f9f3272"
+dependencies = [
+ "bitflags 2.13.2",
+ "block2",
+ "objc2",
+ "objc2-core-foundation",
+]
+
 [[package]]
 name = "oid-registry"
 version = "0.8.1"
@@ -1644,6 +1902,10 @@ name = "once_cell"
 version = "1.21.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "9f7c3e4beb33f85d45ae3e3a1792185706c8e16d043238c593331cc7cd313b50"
+dependencies = [
+ "critical-section",
+ "portable-atomic",
+]

 [[package]]
 name = "once_cell_polyfill"
@@ -1748,6 +2010,19 @@ version = "0.3.34"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f6b464fbc74e149a392436b17d523f769e057cb6877f6a5c4618bc6f11800548"

+[[package]]
+name = "png"
+version = "0.18.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "60769b8b31b2a9f263dae2776c37b1b28ae246943cf719eb6946a1db05128a61"
+dependencies = [
+ "bitflags 2.13.2",
+ "crc32fast",
+ "fdeflate",
+ "flate2",
+ "miniz_oxide 0.8.9",
+]
+
 [[package]]
 name = "portable-atomic"
 version = "1.15.0"
@@ -1778,6 +2053,17 @@ version = "0.2.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "439ee305def115ba05938db6eb1644ff94165c5ab5e9420d1c1bcedbba909391"

+[[package]]
+name = "prefix-trie"
+version = "0.8.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4cf6e3177f0684016a5c209b00882e15f8bdd3f3bb48f0491df10cd102d0c6e7"
+dependencies = [
+ "either",
+ "ipnet",
+ "num-traits",
+]
+
 [[package]]
 name = "prettyplease"
 version = "0.2.37"
@@ -2121,6 +2407,7 @@ dependencies = [
 "arc-swap",
 "base64",
 "bindgen",
+ "hickory-resolver",
 "libc",
 "moka",
 "parking_lot",
@@ -2419,7 +2706,7 @@ dependencies = [
 "base64",
 "bitflags 2.13.2",
 "const_format",
- "core-foundation",
+ "core-foundation 0.10.1",
 "csv",
 "idna",
 "ipnet",
@@ -2751,6 +3038,12 @@ version = "0.8.11"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "d6f6ff9a378485b298a5286656da665ba74413d36db0979633275d2e708145d4"

+[[package]]
+name = "resolv-conf"
+version = "0.7.6"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1e061d1b48cb8d38042de4ae0a7a6401009d6143dc80d2e2d6f31f0bdd6470c7"
+
 [[package]]
 name = "ring"
 version = "0.17.14"
@@ -2886,7 +3179,7 @@ source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "b7f4bc775c73d9a02cde8bf7b2ec4c9d12743edf609006c7facc23998404cd1d"
 dependencies = [
 "bitflags 2.13.2",
- "core-foundation",
+ "core-foundation 0.10.1",
 "core-foundation-sys",
 "libc",
 "security-framework-sys",
@@ -2964,6 +3257,15 @@ dependencies = [
 "zmij",
 ]

+[[package]]
+name = "serde_spanned"
+version = "1.1.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4e7523beb55eece201a2356bee0bbca0d1ab466c14c07703b2e0ee6d42cb0c2c"
+dependencies = [
+ "serde_core",
+]
+
 [[package]]
 name = "sha1"
 version = "0.11.0"
@@ -3091,16 +3393,20 @@ checksum = "6ce2be8dc25455e1f91df71bfa12ad37d7af1092ae736f3a6cd0e37bc7810596"

 [[package]]
 name = "strix-firewall"
-version = "0.1.0"
+version = "0.1.2"
 dependencies = [
 "clap",
- "core-foundation",
+ "core-foundation 0.10.1",
 "directories",
+ "embed-resource",
+ "muda",
 "percent-encoding",
+ "png",
 "rama",
 "rand",
 "rcgen",
 "regex",
+ "schannel",
 "security-framework",
 "security-framework-sys",
 "semver",
@@ -3109,8 +3415,13 @@ dependencies = [
 "time",
 "tokio",
 "tracing",
+ "tracing-appender",
 "tracing-subscriber",
+ "tray-icon",
 "which",
+ "windows",
+ "windows-registry",
+ "windows-service",
 ]

 [[package]]
@@ -3181,6 +3492,27 @@ dependencies = [
 "syn 3.0.6",
 ]

+[[package]]
+name = "system-configuration"
+version = "0.7.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "a13f3d0daba03132c0aa9767f98351b3488edc2c100cda2d2ec2b04f3d8d3c8b"
+dependencies = [
+ "bitflags 2.13.2",
+ "core-foundation 0.9.4",
+ "system-configuration-sys",
+]
+
+[[package]]
+name = "system-configuration-sys"
+version = "0.6.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "8e1d1b10ced5ca923a1fcb8d03e96b8d3268065d724548c0211415ff6ac6bac4"
+dependencies = [
+ "core-foundation-sys",
+ "libc",
+]
+
 [[package]]
 name = "tagptr"
 version = "0.2.0"
@@ -3269,6 +3601,12 @@ dependencies = [
 "zerovec",
 ]

+[[package]]
+name = "tinyvec"
+version = "1.13.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fd3ca314f692efd6c868f8408f53fe444634a845f96c028b97d35f6a1f79f0ee"
+
 [[package]]
 name = "tokio"
 version = "1.53.1"
@@ -3357,10 +3695,25 @@ dependencies = [
 ]

 [[package]]
-name = "toml_datetime"
-version = "1.1.1+spec-1.1.0"
+name = "toml"
+version = "1.1.8+spec-1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "3165f65f62e28e0115a00b2ebdd37eb6f3b641855f9d636d3cd4103767159ad7"
+checksum = "20489e00e4d8741d6be680764cc12e270655e375a20d1011e844a9c3379e678d"
+dependencies = [
+ "indexmap",
+ "serde_core",
+ "serde_spanned",
+ "toml_datetime",
+ "toml_parser",
+ "toml_writer",
+ "winnow",
+]
+
+[[package]]
+name = "toml_datetime"
+version = "1.1.2+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "2b86d767906c6c42421dcba507eb9d203e779497710a47782a224bb871653053"
 dependencies = [
 "serde_core",
 ]
@@ -3379,13 +3732,19 @@ dependencies = [

 [[package]]
 name = "toml_parser"
-version = "1.1.3+spec-1.1.0"
+version = "1.1.5+spec-1.1.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1d38ac1cf9b95face32296c0a3ede1fdc270627c9d9c02a7274dd6d960dc4d56"
+checksum = "baa693a8032d7e1cada7d0041e96126df243179ff061456783ac7f12bda4744c"
 dependencies = [
 "winnow",
 ]

+[[package]]
+name = "toml_writer"
+version = "1.1.3+spec-1.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "06bdbd8cfc056b8d2e2e85f29b56a3bdbecb527cef81eb39e3e7b98af4652770"
+
 [[package]]
 name = "tower-layer"
 version = "0.3.3"
@@ -3486,6 +3845,25 @@ dependencies = [
 "tracing-serde",
 ]

+[[package]]
+name = "tray-icon"
+version = "0.26.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "4f5cc5858ecf9574ddd8f0032a2ff7ffd6f7724d2b81e48b9374984b3fd6ddc9"
+dependencies = [
+ "crossbeam-channel",
+ "muda",
+ "objc2",
+ "objc2-app-kit",
+ "objc2-core-foundation",
+ "objc2-core-graphics",
+ "objc2-foundation",
+ "once_cell",
+ "png",
+ "thiserror",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "try-lock"
 version = "0.2.5"
@@ -3522,6 +3900,19 @@ version = "0.9.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "8ecb6da28b8a351d773b68d5825ac39017e680750f980f3a1a85cd8dd28a47c1"

+[[package]]
+name = "url"
+version = "2.5.8"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ff67a8a4397373c3ef660812acab3268222035010ab8680ec4215f38ba3d0eed"
+dependencies = [
+ "form_urlencoded",
+ "idna",
+ "percent-encoding",
+ "serde",
+ "serde_derive",
+]
+
 [[package]]
 name = "utf8_iter"
 version = "1.0.4"
@@ -3563,6 +3954,26 @@ version = "0.9.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "0b928f33d975fc6ad9f86c8f283853ad26bdd5b10b7f1542aa2fa15e2289105a"

+[[package]]
+name = "vswhom"
+version = "0.1.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "be979b7f07507105799e854203b470ff7c78a1639e330a58f183b5fea574608b"
+dependencies = [
+ "libc",
+ "vswhom-sys",
+]
+
+[[package]]
+name = "vswhom-sys"
+version = "0.1.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "fb067e4cbd1ff067d1df46c9194b5de0e98efd2810bbc95c5d5e5f25a3231150"
+dependencies = [
+ "cc",
+ "libc",
+]
+
 [[package]]
 name = "walkdir"
 version = "2.5.0"
@@ -3669,6 +4080,12 @@ dependencies = [
 "libc",
 ]

+[[package]]
+name = "widestring"
+version = "1.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "72069c3113ab32ab29e5584db3c6ec55d416895e60715417b5b883a357c3e471"
+
 [[package]]
 name = "wildcard"
 version = "0.3.0"
@@ -3709,12 +4126,100 @@ version = "0.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"

+[[package]]
+name = "windows"
+version = "0.62.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "527fadee13e0c05939a6a05d5bd6eec6cd2e3dbd648b9f8e447c6518133d8580"
+dependencies = [
+ "windows-collections",
+ "windows-core",
+ "windows-future",
+ "windows-numerics",
+]
+
+[[package]]
+name = "windows-collections"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "23b2d95af1a8a14a3c7367e1ed4fc9c20e0a26e79551b1454d72583c97cc6610"
+dependencies = [
+ "windows-core",
+]
+
+[[package]]
+name = "windows-core"
+version = "0.62.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "b8e83a14d34d0623b51dce9581199302a221863196a1dde71a7663a4c2be9deb"
+dependencies = [
+ "windows-implement",
+ "windows-interface",
+ "windows-link",
+ "windows-result",
+ "windows-strings",
+]
+
+[[package]]
+name = "windows-future"
+version = "0.3.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e1d6f90251fe18a279739e78025bd6ddc52a7e22f921070ccdc67dde84c605cb"
+dependencies = [
+ "windows-core",
+ "windows-link",
+ "windows-threading",
+]
+
+[[package]]
+name = "windows-implement"
+version = "0.60.2"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "053e2e040ab57b9dc951b72c264860db7eb3b0200ba345b4e4c3b14f67855ddf"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
+[[package]]
+name = "windows-interface"
+version = "0.59.3"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3f316c4a2570ba26bbec722032c4099d8c8bc095efccdc15688708623367e358"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn 2.0.119",
+]
+
 [[package]]
 name = "windows-link"
 version = "0.2.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "f0805222e57f7521d6a62e36fa9163bc891acd422f971defe97d64e70d0a4fe5"

+[[package]]
+name = "windows-numerics"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "6e2e40844ac143cdb44aead537bbf727de9b044e107a0f1220392177d15b0f26"
+dependencies = [
+ "windows-core",
+ "windows-link",
+]
+
+[[package]]
+name = "windows-registry"
+version = "0.6.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02752bf7fbdcce7f2a27a742f798510f3e5ad88dbe84871e5168e2120c3d5720"
+dependencies = [
+ "windows-link",
+ "windows-result",
+ "windows-strings",
+]
+
 [[package]]
 name = "windows-result"
 version = "0.4.1"
@@ -3724,6 +4229,26 @@ dependencies = [
 "windows-link",
 ]

+[[package]]
+name = "windows-service"
+version = "0.8.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "857224b3b211c6f3616921f081ee54721ee3ad2ace2fac6a6337e032f7b4dcf2"
+dependencies = [
+ "bitflags 2.13.2",
+ "widestring",
+ "windows-sys 0.61.2",
+]
+
+[[package]]
+name = "windows-strings"
+version = "0.5.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7837d08f69c77cf6b07689544538e017c1bfcf57e34b4c0ff58e6c2cd3b37091"
+dependencies = [
+ "windows-link",
+]
+
 [[package]]
 name = "windows-sys"
 version = "0.52.0"
@@ -3758,6 +4283,15 @@ dependencies = [
 "windows_x86_64_msvc",
 ]

+[[package]]
+name = "windows-threading"
+version = "0.2.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "3949bd5b99cafdf1c7ca86b43ca564028dfe27d66958f2470940f73d86d75b37"
+dependencies = [
+ "windows-link",
+]
+
 [[package]]
 name = "windows_aarch64_gnullvm"
 version = "0.52.6"
@@ -3815,6 +4349,16 @@ dependencies = [
 "memchr",
 ]

+[[package]]
+name = "winreg"
+version = "0.56.0"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "7d6f32a0ff4a9f6f01231eb2059cc85479330739333e0e58cadf03b6af2cca10"
+dependencies = [
+ "cfg-if",
+ "windows-sys 0.61.2",
+]
+
 [[package]]
 name = "wit-bindgen"
 version = "0.57.1"
@@ -1,8 +1,9 @@
 [package]
 name = "strix-firewall"
-version = "0.1.0"
+version = "0.1.2"
 edition = "2021"
 license = "Apache-2.0"
+authors = ["Strix"]
 description = "Screens package downloads for known malware before they reach your machine"
 repository = "https://github.com/usestrix/firewall"
 homepage = "https://github.com/usestrix/firewall"
@@ -10,6 +11,20 @@ homepage = "https://github.com/usestrix/firewall"
 # as an integration test; new tests/*.rs need an explicit [[test]] entry.
 autotests = false

+# Only Windows ships the service and tray.
+[package.metadata.dist.binaries]
+x86_64-pc-windows-msvc = ["firewall", "firewall-service", "firewall-tray"]
+aarch64-apple-darwin = ["firewall"]
+x86_64-apple-darwin = ["firewall"]
+aarch64-unknown-linux-gnu = ["firewall"]
+x86_64-unknown-linux-gnu = ["firewall"]
+
+[package.metadata.wix]
+upgrade-guid = "D944C2F6-BF55-4B21-A60E-1BBDB1A66293"
+path-guid = "033B1050-23D0-4F5A-A0D3-F4757B4B67E0"
+license = false
+eula = false
+
 [lib]
 name = "firewall"
 # The macOS extension links a staticlib, built on demand:
@@ -20,6 +35,21 @@ crate-type = ["lib"]
 name = "firewall"
 path = "src/main.rs"

+[[bin]]
+name = "firewall-service"
+path = "src/bin/firewall-service.rs"
+required-features = ["machine-wide"]
+
+[[bin]]
+name = "firewall-tray"
+path = "src/bin/firewall-tray.rs"
+required-features = ["machine-wide"]
+
+[[bin]]
+name = "firewall-uninstall"
+path = "src/bin/firewall-uninstall.rs"
+required-features = ["machine-wide"]
+
 [[example]]
 name = "proxy-test"
 path = "tests/proxy-test/main.rs"
@@ -52,10 +82,22 @@ path = "tests/age.rs"
 name = "mitm"
 path = "tests/mitm.rs"

+[[test]]
+name = "tpm"
+path = "tests/tpm.rs"
+
 [[test]]
 name = "managers"
 path = "tests/managers.rs"

+[[test]]
+name = "blocks"
+path = "tests/blocks.rs"
+
+[features]
+# Builds the machine-wide binaries: the Windows service and tray, and the macOS uninstaller.
+machine-wide = []
+
 [dependencies]
 clap = "4.6.6"
 directories = "6.0.0"
@@ -79,6 +121,22 @@ rama = { version = "0.4.0", features = ["net-apple-networkextension"] }
 security-framework = "3.7.0"
 security-framework-sys = "2.17.0"

+[target.'cfg(windows)'.dependencies]
+muda = { version = "0.21.2", default-features = false }
+png = "0.18.1"
+rama = { version = "0.4.0", features = ["dns-hickory"] }
+schannel = "0.1.29"
+tokio = { version = "1.53.1", features = ["net"] }
+tracing-appender = "0.2.5"
+tray-icon = { version = "0.26.1", default-features = false }
+windows = { version = "0.62", features = ["Win32_Foundation", "Win32_Security", "Win32_Security_Authorization", "Win32_Security_Cryptography", "Win32_Storage_FileSystem", "Win32_System_Com", "Win32_System_Console", "Win32_System_Environment", "Win32_System_JobObjects", "Win32_System_LibraryLoader", "Win32_System_Pipes", "Win32_System_Registry", "Win32_System_Threading", "Win32_UI_Controls", "Win32_UI_Shell", "Win32_UI_WindowsAndMessaging"] }
+windows-registry = "0.6.1"
+windows-service = "0.8.0"
+
+# Only on Windows hosts, where the tray and service are built.
+[target.'cfg(windows)'.build-dependencies]
+embed-resource = "3.0.12"
+
 [dev-dependencies]
 tokio = { version = "1.53.1", features = ["macros", "rt-multi-thread"] }

@@ -0,0 +1,20 @@
+//! The tray's task dialogs exist only in version 6 of the common controls, which takes a manifest.
+//! Both machine-wide binaries also get the Strix icon.
+fn main() {
+    println!("cargo:rerun-if-changed=src/bin/firewall-tray.manifest");
+    let msvc = std::env::var("CARGO_CFG_TARGET_ENV").as_deref() == Ok("msvc");
+    if msvc && std::env::var_os("CARGO_FEATURE_MACHINE_WIDE").is_some() {
+        let manifest = concat!(env!("CARGO_MANIFEST_DIR"), "/src/bin/firewall-tray.manifest");
+        println!("cargo:rustc-link-arg-bin=firewall-tray=/MANIFEST:EMBED");
+        println!("cargo:rustc-link-arg-bin=firewall-tray=/MANIFESTINPUT:{manifest}");
+        #[cfg(windows)]
+        embed_resource::compile_for(
+            "src/bin/firewall.rc",
+            ["firewall-tray", "firewall-service"],
+            embed_resource::NONE,
+        )
+        // Fails the build, rather than ship without the icon.
+        .manifest_required()
+        .unwrap();
+    }
+}
@@ -0,0 +1 @@
+use_small_heuristics = "Max"
@@ -80,21 +80,26 @@ async fn handle(req: Request, firewall: &Firewall) -> Result<Response, Infallibl
        warn!(method = %req.method(), uri = %req.uri(), "unroutable, expected an absolute URL");
        return Ok(text(400, "firewall: expected an absolute URL\n"));
    };
+    let url = firewall.mirrored(url);

    let reason = policies::screen(&url, firewall).await;
-    telemetry::screened(firewall, &url, reason.is_some());
+    telemetry::screened(firewall, &url, reason.as_deref());
    if let Some(reason) = reason {
        warn!(method = %req.method(), %url, %reason, "blocked");
        return Ok(blocked(&reason));
    }

    info!(method = %req.method(), %url, "forwarding");
-    let index = firewall.is_index_url(&url);
+    // Only an HTTPS registry was downgraded to reach us, so only it is upgraded back and rewritten.
+    let tls = firewall.is_https_url(&url);
+    let index = tls && firewall.is_index_url(&url);
    let (mut parts, body) = req.into_parts();
-    let Ok(uri) = url.parse() else {
-        return Ok(text(400, "firewall: expected an absolute URL\n"));
-    };
-    parts.uri = uri;
+    if tls {
+        let Ok(uri) = url.parse() else {
+            return Ok(text(400, "firewall: expected an absolute URL\n"));
+        };
+        parts.uri = uri;
+    }

    let client = DecompressionLayer::new().into_layer(EasyHttpWebClient::default());
    let response = match client.serve(Request::from_parts(parts, body)).await {
@@ -125,6 +130,9 @@ pub fn downgrade(firewall: &Firewall, body: Vec<u8>) -> Vec<u8> {
        Ok(text) => text,
        Err(raw) => return raw.into_bytes(),
    };
+    for (upstream, mirror) in firewall.mirrors() {
+        text = text.replace(mirror, upstream);
+    }
    for host in firewall.hosts() {
        text = text.replace(&format!("https://{host}"), &format!("http://{host}"));
    }
@@ -11,4 +11,5 @@ pub static BUN: Manager = Manager {
        ("npm_config_registry", "http://registry.npmjs.org/"),
    ],
    args: &[],
+    lockfile: None,
 };
@@ -17,4 +17,5 @@ pub static CARGO: Manager = Manager {
            "source.firewall.registry=\"sparse+http://index.crates.io/\"",
        ],
    }],
+    lockfile: None,
 };
@@ -8,4 +8,5 @@ pub static GEM: Manager = Manager {
        when: &["install", "update", "fetch"],
        flags: &["--clear-sources", "--source", "http://rubygems.org/"],
    }],
+    lockfile: None,
 };
@@ -11,4 +11,5 @@ pub static GO: Manager = Manager {
        ("GOFLAGS", "-mod=mod"),
    ],
    args: &[],
+    lockfile: None,
 };
@@ -36,6 +36,14 @@ pub struct Manager {
    pub command: &'static str,
    pub env: &'static [(&'static str, &'static str)],
    pub args: &'static [Args],
+    /// Where the manager records registry URLs, which then carry our http:// override.
+    pub lockfile: Option<Lockfile>,
+}
+
+/// What to do after a run about http:// registry URLs left in the lockfile at this path.
+pub enum Lockfile {
+    Restore(&'static str),
+    Warn(&'static str),
 }

 pub static MANAGERS: &[&Manager] =
@@ -1,4 +1,4 @@
-use super::{Manager, PROXY};
+use super::{Lockfile, Manager, PROXY};

 pub static NPM: Manager = Manager {
    command: "npm",
@@ -8,4 +8,5 @@ pub static NPM: Manager = Manager {
        ("npm_config_registry", "http://registry.npmjs.org/"),
    ],
    args: &[],
+    lockfile: Some(Lockfile::Restore("package-lock.json")),
 };
@@ -13,4 +13,5 @@ pub static PDM: Manager = Manager {
        ("PDM_PYPI_VERIFY_SSL", "false"),
    ],
    args: &[],
+    lockfile: None,
 };
@@ -12,5 +12,5 @@ pub static PIP: Manager = recipe("pip");
 pub static PIP3: Manager = recipe("pip3");

 const fn recipe(name: &'static str) -> Manager {
-    Manager { command: name, env: PIP_ENV, args: &[] }
+    Manager { command: name, env: PIP_ENV, args: &[], lockfile: None }
 }
@@ -13,4 +13,5 @@ pub static PIPENV: Manager = Manager {
        ("PIP_TRUSTED_HOST", "pypi.org files.pythonhosted.org"),
    ],
    args: &[],
+    lockfile: None,
 };
@@ -9,4 +9,5 @@ pub static PNPM: Manager = Manager {
        ("pnpm_config_registry", "http://registry.npmjs.org/"),
    ],
    args: &[],
+    lockfile: None,
 };
@@ -1,7 +1,8 @@
-use super::{Manager, PROXY, PYPI_SIMPLE};
+use super::{Lockfile, Manager, PROXY, PYPI_SIMPLE};

 pub static UV: Manager = Manager {
    command: "uv",
    env: &[("HTTP_PROXY", PROXY), ("http_proxy", PROXY), ("UV_DEFAULT_INDEX", PYPI_SIMPLE)],
    args: &[],
+    lockfile: Some(Lockfile::Warn("uv.lock")),
 };
@@ -1,12 +1,16 @@
 pub mod forward;
 pub mod managers;
+#[cfg(windows)]
+mod windows;

 pub use forward::spawn;
 pub use managers::*;

+use crate::policies::registries::BUILT_IN;
 use std::io::{Error, ErrorKind};
 use std::path::{Path, PathBuf};
 use std::process::Command;
+use tracing::{info, warn};

 pub struct Invocation {
    pub program: String,
@@ -34,7 +38,8 @@ impl Invocation {

 pub fn run(port: u16, invocation: &Invocation, dir: Option<&Path>) -> std::io::Result<i32> {
    let proxy = crate::local_url(port, "");
-    let mut command = Command::new(resolve(&invocation.program)?);
+    let program = resolve(&invocation.program)?;
+    let mut command = Command::new(&program);
    command.args(invocation.arguments(&proxy));
    if let Some(dir) = dir {
        command.current_dir(dir);
@@ -42,10 +47,47 @@ pub fn run(port: u16, invocation: &Invocation, dir: Option<&Path>) -> std::io::R
    for (key, value) in managers::variables(&proxy) {
        command.env(key, value);
    }
-    Ok(command.status()?.code().unwrap_or(1))
+    #[cfg(windows)]
+    windows::prepare();
+    let status = command.status();
+    #[cfg(windows)]
+    let status = status.map_err(|error| windows::explain(error, &program));
+    let code = status?.code().unwrap_or(1);
+    let manager = MANAGERS.iter().find(|manager| manager.command == invocation.program);
+    match manager.and_then(|manager| manager.lockfile.as_ref()) {
+        Some(Lockfile::Restore(lockfile)) => restore_https(lockfile, dir),
+        Some(Lockfile::Warn(lockfile)) => warn_if_plaintext(lockfile, dir),
+        None => {}
+    }
+    Ok(code)
 }

 // Command::new only finds .exe on Windows; npm, pnpm and gem are .cmd shims found via PATHEXT.
 fn resolve(program: &str) -> std::io::Result<PathBuf> {
    which::which(program).map_err(|e| Error::new(ErrorKind::NotFound, e))
 }
+
+fn warn_if_plaintext(lockfile: &str, dir: Option<&Path>) {
+    let path = dir.unwrap_or(Path::new(".")).join(lockfile);
+    let Ok(text) = std::fs::read_to_string(path) else { return };
+    if BUILT_IN.iter().any(|registry| text.contains(&format!("http://{}/", registry.host()))) {
+        warn!("{lockfile} has http:// registry URLs; change them to https:// before committing");
+    }
+}
+
+fn restore_https(lockfile: &str, dir: Option<&Path>) {
+    let path = dir.unwrap_or(Path::new(".")).join(lockfile);
+    let Ok(text) = std::fs::read_to_string(&path) else { return };
+    let mut fixed = text.clone();
+    for registry in BUILT_IN {
+        let host = registry.host();
+        fixed = fixed.replace(&format!("http://{host}/"), &format!("https://{host}/"));
+    }
+    if fixed == text {
+        return;
+    }
+    match std::fs::write(&path, fixed) {
+        Ok(()) => info!("changed {lockfile}'s registry URLs back to https://"),
+        Err(e) => warn!("could not change {lockfile}'s registry URLs back to https://: {e}"),
+    }
+}
@@ -0,0 +1,64 @@
+use std::io::{Error, ErrorKind};
+use std::path::Path;
+use std::sync::Once;
+use tracing::debug;
+use windows::core::{BOOL, PCWSTR};
+use windows::Win32::System::Console::{SetConsoleCtrlHandler, CTRL_BREAK_EVENT, CTRL_C_EVENT};
+use windows::Win32::System::JobObjects::{
+    AssignProcessToJobObject, CreateJobObjectW, JobObjectExtendedLimitInformation,
+    SetInformationJobObject, JOBOBJECT_EXTENDED_LIMIT_INFORMATION,
+    JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE,
+};
+use windows::Win32::System::Threading::GetCurrentProcess;
+
+/// Called before spawning, so the manager behaves as it would run from the shell directly.
+/// Once per process: a caller may run several managers.
+pub fn prepare() {
+    static PREPARED: Once = Once::new();
+    PREPARED.call_once(|| {
+        // The console sends Ctrl+C to the manager too. Exiting first would hand the prompt back
+        // while a .cmd shim still asks "Terminate batch job (Y/N)?", so wait for its exit instead.
+        // A handler, unlike ignoring the signal outright, is not inherited by the manager.
+        let _ = unsafe { SetConsoleCtrlHandler(Some(ignore_interrupt), true) };
+        if let Err(error) = kill_children_on_exit() {
+            debug!(%error, "the manager may outlive the firewall");
+        }
+    });
+}
+
+unsafe extern "system" fn ignore_interrupt(event: u32) -> BOOL {
+    (event == CTRL_C_EVENT || event == CTRL_BREAK_EVENT).into()
+}
+
+/// Joins a job that kills what is left in it once the firewall exits, even if killed itself.
+/// The manager inherits the job when spawned, as do its own children.
+fn kill_children_on_exit() -> windows::core::Result<()> {
+    let mut limits = JOBOBJECT_EXTENDED_LIMIT_INFORMATION::default();
+    limits.BasicLimitInformation.LimitFlags = JOB_OBJECT_LIMIT_KILL_ON_JOB_CLOSE;
+    // Never closed: the handle closing as the firewall exits is what kills the rest.
+    let job = unsafe { CreateJobObjectW(None, PCWSTR::null())? };
+    unsafe {
+        SetInformationJobObject(
+            job,
+            JobObjectExtendedLimitInformation,
+            (&raw const limits).cast(),
+            size_of_val(&limits) as u32,
+        )?
+    };
+    unsafe { AssignProcessToJobObject(job, GetCurrentProcess()) }
+}
+
+/// Rust refuses to pass a line break to a batch file, where it would cut the command short.
+pub fn explain(error: Error, program: &Path) -> Error {
+    let batch = program
+        .extension()
+        .is_some_and(|ext| ext.eq_ignore_ascii_case("cmd") || ext.eq_ignore_ascii_case("bat"));
+    if !batch || error.kind() != ErrorKind::InvalidInput {
+        return error;
+    }
+    let name = program.file_name().unwrap_or(program.as_os_str()).to_string_lossy();
+    Error::new(
+        ErrorKind::InvalidInput,
+        format!("{name} is a batch file, which cannot be passed an argument with a line break"),
+    )
+}
@@ -0,0 +1,26 @@
+//! Started by the Windows service manager. It logs to a file, having no console.
+
+#[cfg(windows)]
+fn main() {
+    // Run by the MSI as it removes the firewall.
+    if std::env::args().nth(1).as_deref() == Some("uninstall") {
+        firewall::init_logging("info");
+        if let Err(e) = firewall::os::windows::uninstall() {
+            fail("uninstall", &format!("could not uninstall: {e}"))
+        }
+    } else if let Err(e) = firewall::os::windows::run_service() {
+        fail("service", &format!("could not run the service: {e}"))
+    }
+}
+
+#[cfg(windows)]
+fn fail(kind: &'static str, message: &str) -> ! {
+    tracing::error!("{message}");
+    firewall::telemetry::error(kind);
+    firewall::telemetry::flush();
+    std::process::exit(1)
+}
+
+/// The service is Windows-only.
+#[cfg(not(windows))]
+fn main() {}
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="UTF-8" standalone="yes"?>
+<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
+  <dependency>
+    <dependentAssembly>
+      <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0"
+        processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*"/>
+    </dependentAssembly>
+  </dependency>
+</assembly>
@@ -0,0 +1,11 @@
+//! The notification-area icon, started at sign-in. A GUI app, so no console opens with it.
+#![windows_subsystem = "windows"]
+
+#[cfg(windows)]
+fn main() -> Result<(), rama::error::BoxError> {
+    firewall::os::windows::run_tray()
+}
+
+/// The tray is Windows-only.
+#[cfg(not(windows))]
+fn main() {}
@@ -0,0 +1,16 @@
+//! Run as root by the macOS app's uninstall.
+
+#[cfg(target_os = "macos")]
+fn main() {
+    firewall::init_logging("info");
+    if let Err(e) = firewall::os::macos::uninstall() {
+        tracing::error!("could not uninstall: {e}");
+        firewall::telemetry::error("uninstall");
+        firewall::telemetry::flush();
+        std::process::exit(1)
+    }
+}
+
+/// Only macOS installs anything system-wide.
+#[cfg(not(target_os = "macos"))]
+fn main() {}
@@ -0,0 +1,2 @@
+// The icon Explorer, UAC and the tray's popups show.
+1 ICON "strix.ico"
@@ -0,0 +1,154 @@
+use crate::config::{self, AllowedPackage};
+use crate::policies::Package;
+use crate::Firewall;
+use rama::error::BoxError;
+use serde::Serialize;
+use std::path::Path;
+use std::sync::Mutex;
+use std::time::{Duration, Instant};
+use tokio::sync::watch;
+
+/// So blocks can't pile up while no app collects them.
+const KEPT: usize = 50;
+/// Under pip's, pipenv's and pdm's 15 s read timeout, the shortest of the supported managers.
+const HOLD: Duration = Duration::from_secs(10);
+/// Only hold while an app is asking for blocks, so someone can answer.
+const WATCHED: Duration = Duration::from_secs(2);
+/// For a minute, so the rest of that install can fetch it too.
+const ONCE: Duration = Duration::from_secs(60);
+
+#[derive(Clone, Serialize)]
+pub struct BlockedPackage {
+    pub id: u64,
+    pub eco: &'static str,
+    pub name: String,
+    pub version: Option<String>,
+    pub filter: &'static str,
+    pub reason: String,
+}
+
+struct Blocks {
+    last_id: u64,
+    unsent: Vec<BlockedPackage>,
+    /// Age holds, the only blocks that can be allowed, each with what wakes its waiting downloads.
+    held: Vec<(BlockedPackage, watch::Sender<bool>)>,
+    polled: Option<Instant>,
+}
+
+static BLOCKS: Mutex<Blocks> =
+    Mutex::new(Blocks { last_id: 0, unsent: Vec::new(), held: Vec::new(), polled: None });
+
+/// Records a block and holds a new package's download for up to `HOLD`. Returns whether it was allowed.
+pub async fn block(eco: &'static str, pkg: &Package, filter: &'static str, reason: &str) -> bool {
+    let Some(mut answer) = record(eco, pkg, filter, reason) else {
+        return false;
+    };
+    let allowed = tokio::time::timeout(HOLD, answer.wait_for(|allowed| *allowed)).await;
+    matches!(allowed, Ok(Ok(_)))
+}
+
+/// The app's requests: `blocks`, `allow <id>` or `allow-once <id>`.
+/// An allow replies `late` if the download had stopped waiting.
+pub fn answer(firewall: &Firewall, config: &Path, request: &str) -> String {
+    if request == "blocks" {
+        return serde_json::to_string(&take()).expect("blocks serialize");
+    }
+    let result = match request.split_once(' ').map(|(verb, id)| (verb, id.parse())) {
+        Some(("allow", Ok(id))) => trust(firewall, config, id),
+        Some(("allow-once", Ok(id))) => allow_once(firewall, id),
+        _ => Err(format!("unknown message {request}").into()),
+    };
+    match result {
+        Ok(true) => "ok".to_owned(),
+        Ok(false) => "late".to_owned(),
+        Err(error) => format!("error: {error}"),
+    }
+}
+
+/// Hands each block over once.
+fn take() -> Vec<BlockedPackage> {
+    let mut blocks = lock();
+    blocks.polled = Some(Instant::now());
+    std::mem::take(&mut blocks.unsent)
+}
+
+fn record(
+    eco: &'static str,
+    pkg: &Package,
+    filter: &'static str,
+    reason: &str,
+) -> Option<watch::Receiver<bool>> {
+    let mut blocks = lock();
+    let watched = blocks.polled.is_some_and(|polled| polled.elapsed() < WATCHED);
+    let holds = filter == "age" && watched;
+    // A repeat fetch of a held package waits on the same answer.
+    let waiting = blocks.held.iter().find(|(held, wake)| {
+        wake.receiver_count() > 0
+            && held.eco == eco
+            && held.name == pkg.name
+            && held.version == pkg.version
+    });
+    if let (true, Some((_, wake))) = (holds, waiting) {
+        return Some(wake.subscribe());
+    }
+    blocks.last_id += 1;
+    let block = BlockedPackage {
+        id: blocks.last_id,
+        eco,
+        name: pkg.name.clone(),
+        version: pkg.version.clone(),
+        filter,
+        reason: reason.to_owned(),
+    };
+    push(&mut blocks.unsent, block.clone());
+    if filter != "age" {
+        return None;
+    }
+    let (wake, allowed) = watch::channel(false);
+    push(&mut blocks.held, (block, wake));
+    holds.then_some(allowed)
+}
+
+/// Also saved to the config, so it survives a restart.
+fn trust(firewall: &Firewall, config: &Path, id: u64) -> Result<bool, BoxError> {
+    let block = held(id)?;
+    let version = block.version.ok_or("only a version can be trusted")?;
+    config::allow(config, block.eco, &block.name, &version)?;
+    let package = AllowedPackage { name: block.name, version: Some(version) };
+    firewall.lift_age_check(block.eco, package, None);
+    Ok(release(id))
+}
+
+fn allow_once(firewall: &Firewall, id: u64) -> Result<bool, BoxError> {
+    let block = held(id)?;
+    let package = AllowedPackage { name: block.name, version: block.version };
+    firewall.lift_age_check(block.eco, package, Some(Instant::now() + ONCE));
+    Ok(release(id))
+}
+
+fn held(id: u64) -> Result<BlockedPackage, BoxError> {
+    let blocks = lock();
+    let held = blocks.held.iter().find(|(held, _)| held.id == id);
+    Ok(held.ok_or(format!("no new package was held back as {id}"))?.0.clone())
+}
+
+/// Returns whether a download was still waiting.
+fn release(id: u64) -> bool {
+    let blocks = lock();
+    let Some((_, wake)) = blocks.held.iter().find(|(held, _)| held.id == id) else {
+        return false;
+    };
+    wake.send_replace(true);
+    wake.receiver_count() > 0
+}
+
+fn push<T>(list: &mut Vec<T>, item: T) {
+    if list.len() == KEPT {
+        list.remove(0);
+    }
+    list.push(item);
+}
+
+fn lock() -> std::sync::MutexGuard<'static, Blocks> {
+    BLOCKS.lock().unwrap_or_else(|e| e.into_inner())
+}
@@ -1,27 +1,29 @@
-use crate::policies::registries::{Registry, BUILT_IN};
+use crate::policies::registries::{host_of, BUILT_IN};
 use directories::ProjectDirs;
+use rama::net::uri::Uri;
 use serde::Deserialize;
+use serde_json::{json, Map, Value};
 use std::collections::HashMap;
 use std::io::{Error, ErrorKind};
-use std::path::PathBuf;
+use std::num::{NonZeroU16, NonZeroU64};
+use std::path::{Path, PathBuf};

 pub const DEFAULT_PORT: u16 = 8080;

 #[derive(Debug, Deserialize)]
 #[serde(default, deny_unknown_fields)]
 pub struct FirewallConfig {
-    pub port: u16,
+    pub port: NonZeroU16,
    /// Allow a package when a filter could not check it.
    pub fail_open: bool,
    /// 0 turns the age check off.
    pub min_age_hours: u64,
    pub denylist: DenylistSource,
-    /// Packages never screened, by ecosystem: `{"npm": [{"name": "left-pad"}]}`.
+    /// Packages exempt from the age check, by ecosystem: `{"npm": [{"name": "left-pad"}]}`.
    pub allow: HashMap<String, Vec<AllowedPackage>>,
    pub telemetry: bool,
-    /// Not describable in the file yet, so this is always the built-in table.
-    #[serde(skip)]
-    pub registries: Vec<&'static Registry>,
+    /// Mirrors laid out like a built-in registry, by its name: `{"npm": ["https://npm.example.com/"]}`.
+    pub registries: HashMap<String, Vec<String>>,
 }

 #[derive(Debug, Deserialize)]
@@ -39,19 +41,19 @@ pub struct DenylistSource {
    pub base: String,
    /// Polled for a new commit, which re-fetches every list in use.
    pub revision: String,
-    pub poll_secs: u64,
+    pub poll_secs: NonZeroU64,
 }

 impl Default for FirewallConfig {
    fn default() -> Self {
        FirewallConfig {
-            port: DEFAULT_PORT,
+            port: NonZeroU16::new(DEFAULT_PORT).unwrap(),
            fail_open: true,
-            min_age_hours: 0,
+            min_age_hours: 24,
            denylist: DenylistSource::default(),
            allow: HashMap::new(),
            telemetry: true,
-            registries: BUILT_IN.to_vec(),
+            registries: HashMap::new(),
        }
    }
 }
@@ -62,40 +64,45 @@ impl Default for DenylistSource {
            base: "https://raw.githubusercontent.com/usestrix/firewall-blocklist/main".into(),
            revision: "https://api.github.com/repos/usestrix/firewall-blocklist/commits/main"
                .into(),
-            poll_secs: 10,
+            poll_secs: NonZeroU64::new(10).unwrap(),
        }
    }
 }

 impl FirewallConfig {
-    /// A missing file means defaults; a bad one is an error, so the policy is never quietly relaxed.
    pub fn load() -> std::io::Result<Self> {
-        let Some(path) = path() else {
-            return Ok(Self::default());
-        };
-        let text = match std::fs::read_to_string(&path) {
-            Ok(text) => text,
-            Err(e) if e.kind() == ErrorKind::NotFound => return Ok(Self::default()),
-            Err(e) => return Err(Error::new(e.kind(), format!("{}: {e}", path.display()))),
-        };
-        serde_json::from_str(&text)
-            .map_err(|e| Error::new(ErrorKind::InvalidData, format!("{}: {e}", path.display())))
+        let mut paths: Vec<PathBuf> = path().into_iter().collect();
+        paths.extend(crate::os::system_config());
+        Self::load_from(&paths)
+    }
+
+    /// Later files win key by key, but allow lists add up.
+    /// A bad file is an error, so the policy is never quietly relaxed.
+    pub fn load_from(paths: &[PathBuf]) -> std::io::Result<Self> {
+        let mut merged = Map::new();
+        for path in paths {
+            let text = match std::fs::read_to_string(path) {
+                Ok(text) => text,
+                Err(e) if e.kind() == ErrorKind::NotFound => continue,
+                Err(e) => return Err(Error::new(e.kind(), format!("{}: {e}", path.display()))),
+            };
+            let invalid =
+                |e| Error::new(ErrorKind::InvalidData, format!("{}: {e}", path.display()));
+            let layer: Value = serde_json::from_str(&text).map_err(invalid)?;
+            let config = FirewallConfig::deserialize(&layer).map_err(invalid)?;
+            check(&config).map_err(|e| {
+                Error::new(ErrorKind::InvalidData, format!("{}: {e}", path.display()))
+            })?;
+            let Value::Object(layer) = layer else {
+                unreachable!("a config parses only from an object");
+            };
+            merge(&mut merged, layer);
+        }
+        Ok(serde_json::from_value(Value::Object(merged)).expect("each layer parsed on its own"))
    }

    pub fn local_url(&self, path: &str) -> String {
-        crate::local_url(self.port, path)
-    }
-
-    /// Without building a `Firewall`, which needs a runtime.
-    pub fn hosts(&self) -> Vec<&'static str> {
-        let mut hosts: Vec<&'static str> = Vec::new();
-        for registry in &self.registries {
-            let host = registry.host();
-            if !hosts.contains(&host) {
-                hosts.push(host);
-            }
-        }
-        hosts
+        crate::local_url(self.port.get(), path)
    }
 }

@@ -103,3 +110,84 @@ pub fn path() -> Option<PathBuf> {
    let dirs = ProjectDirs::from("com", "usestrix", "firewall")?;
    Some(dirs.config_dir().join("config.json"))
 }
+
+fn merge(base: &mut Map<String, Value>, top: Map<String, Value>) {
+    for (key, value) in top {
+        match (base.get_mut(&key), value) {
+            (Some(Value::Object(base)), Value::Object(top)) => merge(base, top),
+            (Some(Value::Array(base)), Value::Array(top)) => base.extend(top),
+            (_, value) => {
+                base.insert(key, value);
+            }
+        }
+    }
+}
+
+/// Adds an `allow` entry to the file, leaving the rest of it as written.
+pub fn allow(path: &Path, eco: &str, name: &str, version: &str) -> std::io::Result<()> {
+    let invalid =
+        |e: String| Error::new(ErrorKind::InvalidData, format!("{}: {e}", path.display()));
+    let mut config = match std::fs::read_to_string(path) {
+        Ok(text) => serde_json::from_str(&text).map_err(|e| invalid(e.to_string()))?,
+        Err(e) if e.kind() == ErrorKind::NotFound => json!({}),
+        Err(e) => return Err(e),
+    };
+    if !config.is_object() {
+        return Err(invalid("not an object".into()));
+    }
+    let entry = json!({ "name": name, "version": version });
+    let entries = &mut config["allow"][eco];
+    if entries.is_null() {
+        *entries = Value::Array(Vec::new());
+    }
+    let Some(entries) = entries.as_array_mut() else {
+        return Err(invalid(format!("allow.{eco} is not a list")));
+    };
+    if !entries.contains(&entry) {
+        entries.push(entry);
+    }
+    if let Some(dir) = path.parent() {
+        std::fs::create_dir_all(dir)?;
+    }
+    std::fs::write(path, serde_json::to_string_pretty(&config)?)
+}
+
+/// What serde's types cannot say.
+fn check(config: &FirewallConfig) -> Result<(), String> {
+    // `Duration::hours` panics past this.
+    if config.min_age_hours > time::Duration::MAX.whole_hours() as u64 {
+        return Err(format!("{} hours is too long", config.min_age_hours));
+    }
+    for eco in config.allow.keys() {
+        if !BUILT_IN.iter().any(|r| r.eco == eco) {
+            return Err(format!("unknown ecosystem {eco:?} in allow"));
+        }
+    }
+    for url in [&config.denylist.base, &config.denylist.revision] {
+        if parse_url(url, &["http", "https"]).is_none() {
+            return Err(format!("{url:?} is not an http(s) URL"));
+        }
+    }
+    for (name, mirrors) in &config.registries {
+        if !BUILT_IN.iter().any(|r| r.name() == name) {
+            return Err(format!("no built-in registry is named {name}"));
+        }
+        if let Some(url) = mirrors.iter().find(|url| !is_mirror(url)) {
+            return Err(format!("{url}: a mirror is an https:// URL ending in /"));
+        }
+    }
+    Ok(())
+}
+
+/// No port or userinfo, as `host_of` is what gets intercepted.
+fn is_mirror(url: &str) -> bool {
+    let Some(uri) = parse_url(url, &["https"]) else { return false };
+    let bare_host = uri.host_str().is_some_and(|host| host == host_of(url));
+    bare_host && uri.query().is_none() && uri.fragment().is_none() && url.ends_with('/')
+}
+
+fn parse_url(url: &str, schemes: &[&str]) -> Option<Uri> {
+    let uri = Uri::parse(url).ok()?;
+    let has_host = uri.host_str().is_some_and(|host| !host.is_empty());
+    (has_host && schemes.contains(&uri.scheme_str()?)).then_some(uri)
+}
@@ -1,4 +1,4 @@
-use crate::config::FirewallConfig;
+use crate::config::{AllowedPackage, FirewallConfig};
 use crate::policies::filters::age::Age;
 use crate::policies::filters::denylist::Denylist;
 use crate::policies::filters::osv::Osv;
@@ -6,11 +6,16 @@ use crate::policies::filters::Filter;
 use crate::policies::registries::*;
 use regex::Regex;
 use std::collections::HashMap;
+use std::sync::Mutex;
+use std::time::Instant;

 pub struct Firewall {
    pub config: FirewallConfig,
+    registries: Vec<&'static Registry>,
    patterns: HashMap<&'static str, Vec<Regex>>,
    filters: Vec<Box<dyn Filter>>,
+    /// Each lift expires at its time, or lasts until the firewall stops. Never saved.
+    age_lifted: Mutex<Vec<(String, AllowedPackage, Option<Instant>)>>,
 }

 impl Default for Firewall {
@@ -21,18 +26,19 @@ impl Default for Firewall {

 impl Firewall {
    pub fn new(config: FirewallConfig) -> Self {
+        let registries = with_mirrors(&config.registries);
        let mut patterns = HashMap::new();
-        for registry in &config.registries {
+        for registry in &registries {
            let compiled = registry.patterns.iter().map(|p| Regex::new(p.re).expect(p.re));
            patterns.insert(registry.prefix, compiled.collect());
        }
-        let ecosystems = config.registries.iter().map(|r| r.osv_name);
+        let ecosystems = registries.iter().map(|r| r.osv_name);
        let denylist = Denylist::new(config.denylist.clone(), ecosystems);
        let mut filters: Vec<Box<dyn Filter>> = vec![Box::new(denylist), Box::new(Osv)];
        if config.min_age_hours > 0 {
            filters.push(Box::new(Age::new(config.min_age_hours)));
        }
-        Firewall { config, patterns, filters }
+        Firewall { config, registries, patterns, filters, age_lifted: Mutex::default() }
    }

    pub fn match_on<'a>(
@@ -40,15 +46,49 @@ impl Firewall {
        url: &'a str,
        key: fn(&Registry) -> &'static str,
    ) -> Option<(&'static Registry, &'a str)> {
-        self.config.registries.iter().find_map(|r| url.strip_prefix(key(r)).map(|rest| (*r, rest)))
+        self.registries.iter().find_map(|r| url.strip_prefix(key(r)).map(|rest| (*r, rest)))
    }

    pub fn hosts(&self) -> Vec<&'static str> {
-        self.config.hosts()
+        let mut hosts: Vec<&'static str> = Vec::new();
+        for registry in &self.registries {
+            let host = registry.host();
+            if !hosts.contains(&host) {
+                hosts.push(host);
+            }
+        }
+        hosts
+    }
+
+    pub fn is_https_url(&self, url: &str) -> bool {
+        let host = host_of(url);
+        self.registries.iter().any(|r| r.upstream.starts_with("https://") && r.host() == host)
    }

    pub fn is_index_url(&self, url: &str) -> bool {
-        self.config.registries.iter().any(|r| r.index && r.host() == host_of(url))
+        self.registries.iter().any(|r| r.index && r.host() == host_of(url))
+    }
+
+    /// The URL at the first mirror of the built-in registry it is on, if one is configured.
+    pub fn mirrored(&self, url: String) -> String {
+        for (upstream, mirror) in self.mirrors() {
+            if let Some(rest) = url.strip_prefix(upstream) {
+                return format!("{mirror}{rest}");
+            }
+        }
+        url
+    }
+
+    /// Each built-in upstream with a mirror, paired with its first one.
+    pub fn mirrors(&self) -> Vec<(&'static str, &str)> {
+        let mut mirrors = Vec::new();
+        for registry in BUILT_IN {
+            let first = self.config.registries.get(registry.name()).and_then(|m| m.first());
+            if let Some(mirror) = first {
+                mirrors.push((registry.upstream, mirror.as_str()));
+            }
+        }
+        mirrors
    }

    pub fn resolve(&self, registry: &'static Registry, rest: &str) -> Resolved {
@@ -58,4 +98,29 @@ impl Firewall {
    pub fn filters(&self) -> &[Box<dyn Filter>] {
        &self.filters
    }
+
+    pub fn lift_age_check(&self, eco: &str, package: AllowedPackage, until: Option<Instant>) {
+        let mut lifted = self.age_lifted.lock().unwrap_or_else(|e| e.into_inner());
+        lifted.retain(|(_, _, until)| until.is_none_or(|until| until > Instant::now()));
+        lifted.push((eco.to_owned(), package, until));
+    }
+
+    pub fn age_check_lifted(&self, eco: &str, matches: impl Fn(&AllowedPackage) -> bool) -> bool {
+        let lifted = self.age_lifted.lock().unwrap_or_else(|e| e.into_inner());
+        lifted.iter().any(|(e, package, until)| {
+            e == eco && until.is_none_or(|until| until > Instant::now()) && matches(package)
+        })
+    }
+}
+
+/// The built-ins, then a copy of one per mirror. Leaked, as a `Registry` is `'static` everywhere.
+fn with_mirrors(mirrors: &HashMap<String, Vec<String>>) -> Vec<&'static Registry> {
+    let mut registries = BUILT_IN.to_vec();
+    for built_in in BUILT_IN {
+        for upstream in mirrors.get(built_in.name()).into_iter().flatten() {
+            let upstream = upstream.clone().leak();
+            registries.push(Box::leak(Box::new(Registry { upstream, ..(*built_in).clone() })));
+        }
+    }
+    registries
 }
@@ -1,4 +1,5 @@
 pub mod aliasing;
+pub mod blocks;
 pub mod config;
 pub mod firewall;
 pub mod http;
@@ -24,7 +25,11 @@ pub fn local_url(port: u16, path: &str) -> String {
 }

 pub fn init_logging(default_level: &str) {
-    fmt().with_env_filter(log_filter(default_level)).with_target(false).with_writer(std::io::stderr).init();
+    fmt()
+        .with_env_filter(log_filter(default_level))
+        .with_target(false)
+        .with_writer(std::io::stderr)
+        .init();
 }

 pub(crate) fn log_filter(default_level: &str) -> EnvFilter {
@@ -12,10 +12,6 @@ fn main() {
        firewall::init_logging("info");
        serve()
    }
-    if matches.subcommand_matches("uninstall").is_some() {
-        firewall::init_logging("info");
-        uninstall()
-    }
    let mut command = matches.get_many::<String>("COMMAND").unwrap().cloned();
    let program = command.next().unwrap();
    firewall::init_logging("warn");
@@ -44,8 +40,6 @@ fn options() -> Command {
            Command::new("serve")
                .about("Serve a local registry for package managers configured to use it"),
        )
-        // Run as root by the macOS app's uninstall.
-        .subcommand(Command::new("uninstall").hide(true))
        .arg(
            Arg::new("COMMAND")
                .help("A command to run with its package downloads screened")
@@ -56,6 +50,7 @@ fn options() -> Command {
 }

 fn serve() -> ! {
+    telemetry::set_mode("proxy");
    let config = load();
    let port = config.port;
    print_setup(&config);
@@ -63,10 +58,7 @@ fn serve() -> ! {
        Ok(()) => exit(0),
        Err(e) if e.kind() == ErrorKind::AddrInUse => {
            let location = config::path().map_or("the config".into(), |p| p.display().to_string());
-            fail(
-                "port",
-                &format!("port {port} is in use, set another in {location}"),
-            )
+            fail("port", &format!("port {port} is in use, set another in {location}"))
        }
        Err(e) if e.kind() == ErrorKind::PermissionDenied => {
            fail("port", &format!("not allowed to listen on port {port}"))
@@ -75,14 +67,8 @@ fn serve() -> ! {
    }
 }

-fn uninstall() -> ! {
-    match firewall::os::uninstall() {
-        Ok(()) => exit(0),
-        Err(e) => fail("uninstall", &format!("could not uninstall: {e}")),
-    }
-}
-
 fn run(invocation: Invocation) -> ! {
+    telemetry::set_mode("wrapper");
    let command = &invocation.program;
    let port = match aliasing::spawn(0, load()) {
        Ok(port) => port,
@@ -8,7 +8,7 @@ use rcgen::{
 use std::sync::Arc;
 use time::{Duration, OffsetDateTime};

-/// Held in the Secure Enclave on macOS, in memory elsewhere.
+/// Held in the Secure Enclave on macOS, the TPM on Windows, in memory elsewhere.
 pub type CaSigner = Arc<dyn SigningKey + Send + Sync>;

 pub struct CertificateAuthority {
@@ -61,12 +61,14 @@ pub fn crl(hosts: &[&str], signer: &dyn SigningKey) -> Result<Vec<u8>, BoxError>
 }

 pub const COMMON_NAME: &str = "Strix Firewall";
+/// With `COMMON_NAME`, how a trust store entry is recognized as ours.
+pub const ORGANIZATION: &str = "Strix";

 /// Also used by the issuer, whose issuer name must match the CA's subject.
 pub fn params(hosts: &[&str]) -> CertificateParams {
    let mut name = DistinguishedName::new();
    name.push(DnType::CommonName, COMMON_NAME);
-    name.push(DnType::OrganizationName, "Strix");
+    name.push(DnType::OrganizationName, ORGANIZATION);

    let mut params = CertificateParams::default();
    params.distinguished_name = name;
@@ -3,7 +3,7 @@ mod issuer;
 mod route;
 mod screen;

-pub use ca::{crl, CaSigner, CertificateAuthority, COMMON_NAME};
+pub use ca::{crl, CaSigner, CertificateAuthority, COMMON_NAME, ORGANIZATION};

 use crate::Firewall;
 use issuer::ConstrainedCertIssuer;
@@ -1,6 +1,6 @@
 use crate::http::{blocked, https_url};
-use crate::{policies, telemetry};
 use crate::Firewall;
+use crate::{policies, telemetry};
 use rama::error::BoxError;
 use rama::http::{Request, Response};
 use rama::{Layer, Service};
@@ -37,7 +37,7 @@ where
    async fn serve(&self, req: Request) -> Result<Response, Self::Error> {
        if let Some(url) = https_url(&req) {
            let reason = policies::screen(&url, &self.firewall).await;
-            telemetry::screened(&self.firewall, &url, reason.is_some());
+            telemetry::screened(&self.firewall, &url, reason.as_deref());
            if let Some(reason) = reason {
                warn!(%url, "blocked by firewall: {reason}");
                return Ok(blocked(&reason));
@@ -75,8 +75,8 @@ fn create() -> Result<SecKey, BoxError> {
        .set_key_type(KeyType::ec_sec_prime_random())
        .set_token(Token::SecureEnclave)
        .set_access_control(access);
-    let key = SecKey::new(&options)
-        .map_err(|e| format!("secure enclave key generation failed: {e}"))?;
+    let key =
+        SecKey::new(&options).map_err(|e| format!("secure enclave key generation failed: {e}"))?;

    let blob = key
        .attributes()
@@ -102,7 +102,10 @@ fn load(blob: &[u8]) -> Result<SecKey, BoxError> {
                CFString::wrap_under_get_rule(kSecAttrKeyClass),
                CFString::wrap_under_get_rule(kSecAttrKeyClassPrivate).into_CFType(),
            ),
-            (CFString::from_static_string(TOKEN_OBJECT_ID), CFData::from_buffer(blob).into_CFType()),
+            (
+                CFString::from_static_string(TOKEN_OBJECT_ID),
+                CFData::from_buffer(blob).into_CFType(),
+            ),
        ])
    };
    let mut error = ptr::null_mut();
@@ -5,8 +5,8 @@ mod uninstall;
 pub use uninstall::uninstall;

 use crate::config::FirewallConfig;
-use crate::{mitm, telemetry};
 use crate::Firewall;
+use crate::{blocks, mitm, telemetry};
 use rama::bytes::Bytes;
 use rama::error::BoxError;
 use rama::io::BridgeIo;
@@ -23,6 +23,7 @@ use rama::rt::Executor;
 use rama::telemetry::tracing::apple::oslog::{OsLogLayer, Privacy};
 use rama::{Layer, Service};
 use std::convert::Infallible;
+use std::path::PathBuf;
 use std::sync::Arc;
 use tracing_subscriber::layer::SubscriberExt;
 use tracing_subscriber::util::SubscriberInitExt;
@@ -32,11 +33,13 @@ const KEYCHAIN_SERVICE: &str = BUNDLE_ID;
 const KEYCHAIN_ACCOUNT: &str = "ca";
 /// Must match `macos/LaunchAgents/com.usestrix.firewall.env.plist`, which points npm at it.
 const CA_FILE: &str = "/Library/Application Support/Firewall/ca.pem";
+const CONFIG_FILE: &str = "/Library/Application Support/Firewall/config.json";

 #[derive(Clone)]
 struct Handler {
    ca: Arc<mitm::CertificateAuthority>,
    hosts: Vec<&'static str>,
+    firewall: Arc<Firewall>,
    service: mitm::MitmService,
 }

@@ -56,7 +59,7 @@ impl TransparentProxyHandler for Handler {
        let message = String::from_utf8_lossy(&message).into_owned();
        Some(Bytes::from(match message.as_str() {
            "ca" => self.ca.pem.clone(),
-            other => format!("error: unknown message {other}"),
+            other => blocks::answer(&self.firewall, CONFIG_FILE.as_ref(), other),
        }))
    }

@@ -97,17 +100,23 @@ impl TransparentProxyHandlerFactory for Factory {
    }
 }

+pub fn system_config() -> Option<PathBuf> {
+    Some(CONFIG_FILE.into())
+}
+
 fn handler(exec: Executor) -> Result<Handler, BoxError> {
+    telemetry::set_mode("extension");
    telemetry::heartbeat();
-    let config = FirewallConfig::load().inspect_err(|_| telemetry::error("config"))?;
+    let config = FirewallConfig::load_from(&[CONFIG_FILE.into()])
+        .inspect_err(|_| telemetry::error("config"))?;
    let firewall = Arc::new(Firewall::new(config));
    let hosts = firewall.hosts();
    let key = enclave::EnclaveKey::load_or_create().inspect_err(|_| telemetry::error("enclave"))?;
    let signer: mitm::CaSigner = Arc::new(key);
    let ca = install::certificate_authority(&hosts, &*signer);
    let ca = Arc::new(ca.inspect_err(|_| telemetry::error("ca"))?);
-    let service = mitm::mitm_service(firewall, &ca, signer, None, exec);
-    Ok(Handler { ca, hosts, service })
+    let service = mitm::mitm_service(firewall.clone(), &ca, signer, None, exec);
+    Ok(Handler { ca, hosts, firewall, service })
 }

 /// stderr is invisible in a system extension, so events go to the unified log:
@@ -117,7 +126,8 @@ fn init(_config: Option<&TransparentProxyInitConfig>) -> bool {
    std::panic::set_hook(Box::new(|panic| tracing::error!("{panic}")));
    if let Ok(oslog) = OsLogLayer::new(BUNDLE_ID, "extension") {
        let oslog = oslog.with_privacy(Privacy::Public);
-        let _ = tracing_subscriber::registry().with(crate::log_filter("info")).with(oslog).try_init();
+        let _ =
+            tracing_subscriber::registry().with(crate::log_filter("info")).with(oslog).try_init();
    }
    true
 }
@@ -1,11 +1,14 @@
 #[cfg(target_os = "macos")]
 pub mod macos;
+#[cfg(windows)]
+pub mod windows;

 #[cfg(target_os = "macos")]
-pub use macos::uninstall;
+pub use macos::system_config;
+#[cfg(windows)]
+pub use windows::system_config;

-/// Elsewhere nothing is installed system-wide.
-#[cfg(not(target_os = "macos"))]
-pub fn uninstall() -> Result<(), rama::error::BoxError> {
-    Ok(())
+#[cfg(not(any(target_os = "macos", windows)))]
+pub fn system_config() -> Option<std::path::PathBuf> {
+    None
 }
@@ -0,0 +1,146 @@
+use super::*;
+use crate::mitm::{CertificateAuthority, COMMON_NAME, ORGANIZATION};
+use rama::tls::boring::core::nid::Nid;
+use rama::tls::boring::core::x509::X509;
+use rcgen::SigningKey;
+use schannel::cert_context::CertContext;
+use schannel::cert_store::{CertAdd, CertStore};
+use std::io;
+use std::path::Path;
+use std::time::{SystemTime, UNIX_EPOCH};
+use tracing::warn;
+use windows::Win32::Security::Authorization::{GetNamedSecurityInfoW, SE_FILE_OBJECT};
+use windows::Win32::Security::*;
+use windows::Win32::Storage::FileSystem::CreateDirectoryW;
+use windows_registry::Type;
+
+/// SYSTEM and admins write, users only read, so no one else can plant a CA for node.
+const DATA_DIR_ACL: &str = concat!(
+    "O:BA",               // owner: Administrators
+    "D:P",                // protected: ignore ProgramData's rules, which let any user create files
+    "(A;OICI;FA;;;SY)",   // allow SYSTEM full control, inherited by files (OI) and subfolders (CI)
+    "(A;OICI;FA;;;BA)",   // allow Administrators full control
+    "(A;OICI;FRFX;;;BU)", // allow Users read and execute only
+);
+
+/// 1970 in FILETIME, which counts 100 ns from 1601.
+const FILETIME_UNIX_EPOCH: u128 = 116_444_736_000_000_000;
+
+/// Trusted machine-wide so restarts keep it; replaced if the hosts change.
+pub fn load_or_create_ca(
+    hosts: &[&str],
+    signer: &dyn SigningKey,
+) -> Result<CertificateAuthority, BoxError> {
+    let stored = read_registry_string(REGISTRY_KEY, "ca")?;
+    let ca = match stored.and_then(|blob| CertificateAuthority::from_blob(&blob, hosts, signer)) {
+        Some(ca) => ca,
+        None => {
+            warn!(?hosts, "minting a new CA");
+            let ca = CertificateAuthority::generate(hosts, signer)?;
+            LOCAL_MACHINE.create(REGISTRY_KEY)?.set_string("ca", ca.to_blob(hosts))?;
+            // Windows discards CRLs it cached before now, in case an old CA's is cached at our URL.
+            let now = SystemTime::now().duration_since(UNIX_EPOCH)?.as_nanos() / 100
+                + FILETIME_UNIX_EPOCH;
+            let chain = r"SOFTWARE\Microsoft\Cryptography\OID\EncodingType 0\CertDllCreateCertificateChainEngine\Config";
+            let resync = (now as u64).to_le_bytes();
+            LOCAL_MACHINE.create(chain)?.set_bytes(
+                "ChainCacheResyncFiletime",
+                Type::Bytes,
+                &resync,
+            )?;
+            ca
+        }
+    };
+    // Idempotent, and the registry value can outlive the certificate.
+    let der = ca.crt.to_der()?;
+    let mut store = CertStore::open_local_machine("Root")?;
+    store.add_cert(&CertContext::new(&der)?, CertAdd::ReplaceExisting)?;
+    remove_our_cas_except(Some(&der))?;
+    // For clients that read no trust store; screening still works for the rest if this fails.
+    let exported = secure_data_dir().and_then(|dir| std::fs::write(dir.join("ca.pem"), &ca.pem));
+    if let Err(error) = exported {
+        warn!(%error, "could not export the CA");
+    }
+    Ok(ca)
+}
+
+/// Created on first use with its ACL, which is reset every time. One a user made first, or a link,
+/// is replaced: its owner could grant itself access again, and a link would redirect our writes.
+pub(super) fn secure_data_dir() -> io::Result<PathBuf> {
+    let dir = data_dir();
+    let exists = match std::fs::symlink_metadata(&dir) {
+        Ok(meta) if meta.file_type().is_symlink() => {
+            std::fs::remove_dir(&dir)?;
+            false
+        }
+        Ok(_) if !owned_by_admins(&dir)? => {
+            warn!(dir = %dir.display(), "replacing a data folder not created by an admin");
+            std::fs::remove_dir_all(&dir)?;
+            false
+        }
+        Ok(_) => true,
+        Err(_) => false,
+    };
+    let info = OWNER_SECURITY_INFORMATION
+        | DACL_SECURITY_INFORMATION
+        | PROTECTED_DACL_SECURITY_INFORMATION;
+    let path = HSTRING::from(dir.as_path());
+    let acl = security_descriptor(DATA_DIR_ACL)?;
+    if exists {
+        unsafe { SetFileSecurityW(&path, info, PSECURITY_DESCRIPTOR(acl.0)).ok()? };
+    } else {
+        let attributes = SECURITY_ATTRIBUTES {
+            nLength: size_of::<SECURITY_ATTRIBUTES>() as u32,
+            lpSecurityDescriptor: acl.0,
+            bInheritHandle: false.into(),
+        };
+        // Never inherits ProgramData's ACL, which lets users add files; fails if it was recreated.
+        unsafe { CreateDirectoryW(&path, Some(&attributes))? };
+    }
+    Ok(dir)
+}
+
+/// By SYSTEM or the Administrators group, as what an elevated process creates is.
+fn owned_by_admins(path: &Path) -> windows::core::Result<bool> {
+    let (mut owner, mut descriptor) = (PSID::default(), PSECURITY_DESCRIPTOR::default());
+    unsafe {
+        GetNamedSecurityInfoW(
+            &HSTRING::from(path),
+            SE_FILE_OBJECT,
+            OWNER_SECURITY_INFORMATION,
+            Some(&mut owner),
+            None,
+            None,
+            None,
+            &mut descriptor,
+        )
+        .ok()?
+    };
+    let admins = [WinBuiltinAdministratorsSid, WinLocalSystemSid];
+    let owned = admins.into_iter().any(|sid| unsafe { IsWellKnownSid(owner, sid) }.as_bool());
+    // `owner` points into the descriptor, so it is freed last.
+    unsafe { LocalFree(Some(HLOCAL(descriptor.0))) };
+    Ok(owned)
+}
+
+/// Drops every CA of ours from LocalMachine\Root but `keep`.
+pub(super) fn remove_our_cas_except(keep: Option<&[u8]>) -> Result<(), BoxError> {
+    for cert in CertStore::open_local_machine("Root")?.certs() {
+        if keep != Some(cert.to_der()) && is_our_ca(cert.to_der()) {
+            cert.delete()?;
+        }
+    }
+    Ok(())
+}
+
+fn is_our_ca(der: &[u8]) -> bool {
+    let Ok(crt) = X509::from_der(der) else {
+        return false;
+    };
+    let name = |nid| {
+        let entry = crt.subject_name().entries_by_nid(nid).next()?;
+        Some(entry.data().as_utf8().ok()?.to_string())
+    };
+    name(Nid::COMMONNAME).as_deref() == Some(COMMON_NAME)
+        && name(Nid::ORGANIZATIONNAME).as_deref() == Some(ORGANIZATION)
+}
@@ -0,0 +1,121 @@
+//! The hosts file sends each registry host to its own loopback address, where a
+//! LocalSystem service screens it as the macOS extension does.
+
+mod ca;
+mod pipe;
+mod service;
+mod tpm;
+mod tray;
+mod uninstall;
+
+pub use service::run as run_service;
+pub use tpm::CaKey;
+pub use tray::run as run_tray;
+pub use uninstall::uninstall;
+
+use rama::error::BoxError;
+use std::net::Ipv4Addr;
+use std::path::PathBuf;
+use windows::core::{Owned, GUID, HSTRING};
+use windows::Win32::Foundation::{LocalFree, ERROR_FILE_NOT_FOUND, HLOCAL};
+use windows::Win32::Security::Authorization::*;
+use windows::Win32::Security::PSECURITY_DESCRIPTOR;
+use windows::Win32::System::Com::CoTaskMemFree;
+use windows::Win32::System::Environment::ExpandEnvironmentStringsW;
+use windows::Win32::UI::Shell::*;
+use windows_registry::LOCAL_MACHINE;
+
+const SERVICE_NAME: &str = "StrixFirewall";
+/// Admin-only, so it holds the CA as the System keychain does on macOS.
+const REGISTRY_KEY: &str = r"SOFTWARE\Strix Firewall";
+/// Serves the CRL our leaves point at; schannel fails closed without one.
+const CRL_ADDRESS: Ipv4Addr = Ipv4Addr::new(127, 0, 0, 2);
+
+/// Admin-only; holds the exported CA, the service log and the config.
+fn data_dir() -> PathBuf {
+    known_folder(&FOLDERID_ProgramData).join("Strix Firewall")
+}
+
+/// Admin-only, so users cannot relax what the service screens.
+fn config_file() -> PathBuf {
+    data_dir().join("config.json")
+}
+
+pub fn system_config() -> Option<PathBuf> {
+    Some(config_file())
+}
+
+/// In the folder Windows reads it from, normally %SystemRoot%\System32\drivers\etc.
+fn hosts_file() -> PathBuf {
+    let key = r"SYSTEM\CurrentControlSet\Services\Tcpip\Parameters";
+    let configured = LOCAL_MACHINE.open(key).and_then(|key| key.get_hstring("DataBasePath"));
+    let dir = match configured {
+        Ok(dir) => expand_environment(&dir),
+        Err(_) => known_folder(&FOLDERID_System).join(r"drivers\etc"),
+    };
+    dir.join("hosts")
+}
+
+/// Windows always has its known folders.
+fn known_folder(id: &GUID) -> PathBuf {
+    let path = unsafe { SHGetKnownFolderPath(id, KF_FLAG_DEFAULT, None) }.expect("a known folder");
+    let dir = PathBuf::from(unsafe { path.to_hstring() }.to_os_string());
+    unsafe { CoTaskMemFree(Some(path.0 as *const _)) };
+    dir
+}
+
+fn expand_environment(path: &HSTRING) -> PathBuf {
+    let len = unsafe { ExpandEnvironmentStringsW(path, None) };
+    let mut expanded = vec![0; len as usize];
+    let len = unsafe { ExpandEnvironmentStringsW(path, Some(&mut expanded)) };
+    // Less the terminating null.
+    PathBuf::from(String::from_utf16_lossy(&expanded[..(len as usize).saturating_sub(1)]))
+}
+
+/// From 127.0.0.3, leaving 127.0.0.1 to whatever else serves locally.
+fn loopback_addresses(hosts: &[&'static str]) -> Vec<(Ipv4Addr, &'static str)> {
+    (3..).zip(hosts).map(|(i, host)| (Ipv4Addr::new(127, 0, 0, i), *host)).collect()
+}
+
+/// Points each host at its listener, replacing the lines we wrote before; with none, only removes
+/// them. Bytes, as the file needn't be UTF-8, and every other line is kept as it was.
+fn write_hosts_entries(hosts: &[&'static str]) -> std::io::Result<()> {
+    const TAG: &str = " # Strix Firewall";
+    let old = std::fs::read(hosts_file())?;
+    let ours = |line: &&[u8]| line.trim_ascii_end().ends_with(TAG.as_bytes());
+    let lines = old.split_inclusive(|&byte| byte == b'\n');
+    let mut new: Vec<u8> = lines.filter(|line| !ours(line)).flatten().copied().collect();
+    if !new.is_empty() && !new.ends_with(b"\n") {
+        new.extend_from_slice(b"\r\n");
+    }
+    for (address, host) in loopback_addresses(hosts) {
+        new.extend_from_slice(format!("{address} {host}{TAG}\r\n").as_bytes());
+    }
+    std::fs::write(hosts_file(), new)
+}
+
+/// Parses `sddl`; freed on drop.
+fn security_descriptor(sddl: &str) -> windows::core::Result<Owned<HLOCAL>> {
+    let mut descriptor = PSECURITY_DESCRIPTOR::default();
+    unsafe {
+        ConvertStringSecurityDescriptorToSecurityDescriptorW(
+            &HSTRING::from(sddl),
+            SDDL_REVISION_1,
+            &mut descriptor,
+            None,
+        )?
+    };
+    Ok(unsafe { Owned::new(HLOCAL(descriptor.0)) })
+}
+
+fn read_registry_string(key: &str, value: &str) -> Result<Option<String>, BoxError> {
+    none_if_missing(LOCAL_MACHINE.open(key).and_then(|key| key.get_string(value)))
+}
+
+/// `None` for a missing key or value.
+fn none_if_missing<T>(result: windows_registry::Result<T>) -> Result<Option<T>, BoxError> {
+    match result {
+        Err(error) if error.code() == ERROR_FILE_NOT_FOUND.to_hresult() => Ok(None),
+        result => Ok(Some(result?)),
+    }
+}
@@ -0,0 +1,99 @@
+//! How the tray asks the service what it blocked, and allows a new package, as the macOS app
+//! messages its extension.
+
+use super::{config_file, security_descriptor};
+use crate::{blocks, Firewall};
+use rama::error::BoxError;
+use std::os::windows::io::AsRawHandle;
+use std::sync::Arc;
+use std::time::Duration;
+use tokio::io::{AsyncBufReadExt, AsyncReadExt, AsyncWriteExt, BufReader};
+use tokio::net::windows::named_pipe::{NamedPipeServer, ServerOptions};
+use windows::core::{Owned, PWSTR};
+use windows::Win32::Foundation::HANDLE;
+use windows::Win32::Security::*;
+use windows::Win32::System::Pipes::{GetNamedPipeClientProcessId, ImpersonateNamedPipeClient};
+use windows::Win32::System::Threading::*;
+
+pub(super) const PIPE: &str = r"\\.\pipe\StrixFirewall";
+/// Signed-in users can connect, as the tray runs as them.
+const PIPE_ACL: &str = "D:P(A;;GA;;;SY)(A;;GA;;;BA)(A;;GRGW;;;IU)";
+
+pub(super) async fn serve(firewall: Arc<Firewall>) -> Result<(), BoxError> {
+    let mut server = create(true)?;
+    loop {
+        server.connect().await?;
+        let client = std::mem::replace(&mut server, create(false)?);
+        let firewall = Arc::clone(&firewall);
+        tokio::spawn(async move {
+            if let Err(error) = answer(client, &firewall).await {
+                tracing::debug!(%error, "could not answer the tray");
+            }
+        });
+    }
+}
+
+fn create(first: bool) -> Result<NamedPipeServer, BoxError> {
+    let acl = security_descriptor(PIPE_ACL)?;
+    let mut attributes = SECURITY_ATTRIBUTES {
+        nLength: size_of::<SECURITY_ATTRIBUTES>() as u32,
+        lpSecurityDescriptor: acl.0,
+        bInheritHandle: false.into(),
+    };
+    let attributes = (&raw mut attributes).cast();
+    let mut options = ServerOptions::new();
+    // Fails if anyone else made the pipe first.
+    options.first_pipe_instance(first);
+    Ok(unsafe { options.create_with_security_attributes_raw(PIPE, attributes)? })
+}
+
+/// A line each way.
+async fn answer(client: NamedPipeServer, firewall: &Firewall) -> Result<(), BoxError> {
+    let mut client = BufReader::new(client);
+    let mut request = String::new();
+    (&mut client).take(64 * 1024).read_line(&mut request).await?;
+    let request = request.trim_end();
+    // Only the app can message the macOS extension; here any program could connect.
+    let reply = if !client_is_tray(client.get_ref())? {
+        "error: only the tray can ask".to_owned()
+    } else if request.starts_with("allow ") && !client_is_admin(client.get_ref())? {
+        "error: trusting a package takes an administrator".to_owned()
+    } else {
+        blocks::answer(firewall, &config_file(), request)
+    };
+    client.write_all(format!("{reply}\n").as_bytes()).await?;
+    // Closing before the tray hangs up could discard the reply.
+    let _ = tokio::time::timeout(Duration::from_secs(5), client.read(&mut [0])).await;
+    Ok(())
+}
+
+fn client_is_tray(client: &NamedPipeServer) -> Result<bool, BoxError> {
+    let mut id = 0;
+    unsafe { GetNamedPipeClientProcessId(HANDLE(client.as_raw_handle()), &mut id)? };
+    let process = unsafe { Owned::new(OpenProcess(PROCESS_QUERY_LIMITED_INFORMATION, false, id)?) };
+    let mut path = [0u16; 1024];
+    let mut len = path.len() as u32;
+    let flags = PROCESS_NAME_WIN32;
+    unsafe { QueryFullProcessImageNameW(*process, flags, PWSTR(path.as_mut_ptr()), &mut len)? };
+    let path = String::from_utf16(&path[..len as usize])?;
+    let tray = std::env::current_exe()?.with_file_name("firewall-tray.exe");
+    // Windows paths ignore case.
+    Ok(path.to_lowercase() == tray.to_string_lossy().to_lowercase())
+}
+
+/// Elevated, as only an elevated token has the Administrators group enabled.
+fn client_is_admin(client: &NamedPipeServer) -> windows::core::Result<bool> {
+    let mut sid = [0u32; SECURITY_MAX_SID_SIZE as usize / 4];
+    let admins = PSID(sid.as_mut_ptr().cast());
+    let mut size = SECURITY_MAX_SID_SIZE;
+    unsafe { CreateWellKnownSid(WinBuiltinAdministratorsSid, None, Some(admins), &mut size)? };
+    unsafe { ImpersonateNamedPipeClient(HANDLE(client.as_raw_handle()))? };
+    let mut member = false.into();
+    let checked = unsafe { CheckTokenMembership(None, admins, &mut member) };
+    // Carrying on as the client would be worse than stopping.
+    if unsafe { RevertToSelf() }.is_err() {
+        std::process::abort();
+    }
+    checked?;
+    Ok(member.as_bool())
+}
@@ -0,0 +1,250 @@
+use super::ca::{load_or_create_ca, secure_data_dir};
+use super::tpm::CaKey;
+use super::{
+    config_file, loopback_addresses, pipe, write_hosts_entries, CRL_ADDRESS, SERVICE_NAME,
+};
+use crate::config::FirewallConfig;
+use crate::http::{reply, text};
+use crate::{mitm, telemetry, Firewall};
+use rama::dns::client::hickory::resolver::config::ResolveHosts;
+use rama::dns::client::hickory::{default_resolver_opts, HickoryDnsResolver};
+use rama::dns::client::resolver::DnsAddressResolver;
+use rama::dns::client::try_init_global_dns_resolver;
+use rama::error::BoxError;
+use rama::http::server::HttpServer;
+use rama::http::{Request, Response};
+use rama::io::BridgeIo;
+use rama::layer::ConsumeErrLayer;
+use rama::net::address::Domain;
+use rama::rt::Executor;
+use rama::service::service_fn;
+use rama::tcp::server::TcpListener;
+use rama::tcp::TcpStream;
+use rama::{Layer, Service};
+use rcgen::SigningKey;
+use std::convert::Infallible;
+use std::ffi::OsString;
+use std::net::{IpAddr, Ipv4Addr};
+use std::sync::Arc;
+use std::time::Duration;
+use tracing_appender::rolling::{RollingFileAppender, Rotation};
+use windows::Win32::Foundation::ERROR_GEN_FAILURE;
+use windows_service::service::*;
+use windows_service::service_control_handler::{
+    self, ServiceControlHandlerResult, ServiceStatusHandle,
+};
+use windows_service::{define_windows_service, service_dispatcher};
+
+const CRL_PATH: &str = "/ca.crl";
+
+define_windows_service!(ffi_service_main, service_main);
+
+/// Called by the service control manager, never by hand.
+pub fn run() -> windows_service::Result<()> {
+    service_dispatcher::start(SERVICE_NAME, ffi_service_main)
+}
+
+/// stderr goes nowhere in a service, so events go to a file beside the CA.
+fn service_main(_arguments: Vec<OsString>) {
+    let log = secure_data_dir().ok().and_then(|dir| {
+        RollingFileAppender::builder()
+            .rotation(Rotation::DAILY)
+            .filename_prefix("firewall")
+            .filename_suffix("log")
+            .max_log_files(7)
+            .build(dir)
+            .ok()
+    });
+    if let Some(appender) = log {
+        let filter = crate::log_filter("info");
+        let _ = tracing_subscriber::fmt()
+            .with_env_filter(filter)
+            .with_ansi(false)
+            .with_writer(appender)
+            .try_init();
+    }
+    std::panic::set_hook(Box::new(|panic| tracing::error!("{panic}")));
+    if let Err(error) = run_until_stopped() {
+        tracing::error!(%error, "the service stopped");
+    }
+}
+
+fn run_until_stopped() -> Result<(), BoxError> {
+    let (control_sender, mut control_receiver) = tokio::sync::mpsc::unbounded_channel();
+    let status = service_control_handler::register(SERVICE_NAME, move |control| match control {
+        ServiceControl::Stop
+        | ServiceControl::Shutdown
+        | ServiceControl::Pause
+        | ServiceControl::Continue => {
+            // Answered once handled, so a failed pause fails the caller's ControlService.
+            let (reply, handled) = tokio::sync::oneshot::channel();
+            let _ = control_sender.send((control, reply));
+            handled.blocking_recv().unwrap_or(ServiceControlHandlerResult::NoError)
+        }
+        ServiceControl::Interrogate => ServiceControlHandlerResult::NoError,
+        _ => ServiceControlHandlerResult::NotImplemented,
+    })?;
+    set_status(&status, ServiceState::StartPending, false)?;
+    let served = crate::runtime()?.block_on(async {
+        let hosts = match start_screening(&status).await {
+            Ok(hosts) => hosts,
+            Err(error) => {
+                telemetry::send().await;
+                return Err(error);
+            }
+        };
+        // Only pausing removes our hosts entries; a stop or crash keeps them, failing closed.
+        while let Some((control, reply)) = control_receiver.recv().await {
+            let (hosts, state) = match control {
+                ServiceControl::Pause => (&[][..], ServiceState::Paused),
+                ServiceControl::Continue => (&hosts[..], ServiceState::Running),
+                _ => break,
+            };
+            let result = match write_hosts_entries(hosts) {
+                Ok(()) => {
+                    set_status(&status, state, false)?;
+                    ServiceControlHandlerResult::NoError
+                }
+                Err(error) => {
+                    tracing::error!(%error, "could not rewrite the hosts file");
+                    let code = error.raw_os_error().map_or(ERROR_GEN_FAILURE.0, |code| code as u32);
+                    ServiceControlHandlerResult::Other(code)
+                }
+            };
+            let _ = reply.send(result);
+        }
+        Ok::<_, BoxError>(())
+    });
+    // A failed stop is what makes the service manager restart it.
+    set_status(&status, ServiceState::Stopped, served.is_err())?;
+    served
+}
+
+async fn start_screening(status: &ServiceStatusHandle) -> Result<Vec<&'static str>, BoxError> {
+    telemetry::set_mode("service");
+    telemetry::heartbeat();
+    // Never the hosts file, which points back at us; the Firewall's lookups included.
+    let mut options = default_resolver_opts();
+    options.use_hosts_file = ResolveHosts::Never;
+    let resolver = HickoryDnsResolver::try_new_system_with_options(options)?;
+    let _ = try_init_global_dns_resolver(resolver.clone());
+    let config =
+        FirewallConfig::load_from(&[config_file()]).inspect_err(|_| telemetry::error("config"))?;
+    let firewall = Arc::new(Firewall::new(config));
+    let hosts = firewall.hosts();
+    let key = CaKey::load_or_create().inspect_err(|_| telemetry::error("tpm"))?;
+    let signer: mitm::CaSigner = Arc::new(key);
+    let ca = load_or_create_ca(&hosts, &*signer).inspect_err(|_| telemetry::error("ca"))?;
+    let exec = Executor::default();
+
+    // An empty CRL for the leaves to point at, signed fresh for each fetch.
+    let crl_url = format!("http://{CRL_ADDRESS}{CRL_PATH}");
+    let (crl_hosts, crl_signer) = (hosts.clone(), Arc::clone(&signer));
+    let crl = service_fn(move |req: Request| {
+        let response = if req.uri().request_target() == CRL_PATH {
+            crl_response(&crl_hosts, &*crl_signer)
+        } else {
+            text(404, "No route.\n")
+        };
+        async move { Ok::<_, Infallible>(response) }
+    });
+    let crl = HttpServer::auto(exec.clone()).service(crl);
+    tokio::spawn(listen_on(CRL_ADDRESS, 80, &exec)?.serve(crl));
+
+    let tray_firewall = Arc::clone(&firewall);
+    tokio::spawn(async move {
+        if let Err(error) = pipe::serve(tray_firewall).await {
+            tracing::error!(%error, "the tray cannot reach the service");
+        }
+    });
+
+    let service = mitm::mitm_service(firewall, &ca, signer, Some(crl_url), exec.clone());
+    for (address, host) in loopback_addresses(&hosts) {
+        for port in [80, 443] {
+            let upstream =
+                RedirectedHost { host, port, resolver: resolver.clone(), service: service.clone() };
+            let upstream = ConsumeErrLayer::trace_as_warning().into_layer(upstream);
+            tokio::spawn(listen_on(address, port, &exec)?.serve(upstream));
+        }
+    }
+    // Rewritten on every start, so a restart picks up a changed host list.
+    write_hosts_entries(&hosts)?;
+    tracing::info!(?hosts, "screening redirected registry traffic");
+    set_status(status, ServiceState::Running, false)?;
+    Ok(hosts)
+}
+
+fn crl_response(hosts: &[&str], signer: &dyn SigningKey) -> Response {
+    match mitm::crl(hosts, signer) {
+        Ok(der) => reply(200, "application/pkix-crl", der),
+        Err(error) => text(503, &format!("{error}\n")),
+    }
+}
+
+fn listen_on(address: Ipv4Addr, port: u16, exec: &Executor) -> std::io::Result<TcpListener> {
+    let bound = std::net::TcpListener::bind((address, port))?;
+    bound.set_nonblocking(true)?;
+    TcpListener::try_from_std_tcp_listener(bound, exec.clone())
+}
+
+/// Each listener is bound to one host's address, which is how it knows where to connect.
+#[derive(Clone)]
+struct RedirectedHost {
+    host: &'static str,
+    port: u16,
+    resolver: HickoryDnsResolver,
+    service: mitm::MitmService,
+}
+
+impl Service<TcpStream> for RedirectedHost {
+    type Output = ();
+    type Error = BoxError;
+
+    async fn serve(&self, ingress: TcpStream) -> Result<(), BoxError> {
+        let address = self.resolve().await?;
+        let egress = tokio::net::TcpStream::connect((address, self.port)).await?;
+        let streams = BridgeIo(ingress, TcpStream::from(egress));
+        self.service.serve(streams).await
+    }
+}
+
+impl RedirectedHost {
+    /// IPv4 if it has one, else IPv6.
+    async fn resolve(&self) -> Result<IpAddr, BoxError> {
+        let domain = Domain::from_static(self.host);
+        if let Some(Ok(v4)) = self.resolver.lookup_ipv4_first(domain.clone()).await {
+            return Ok(v4.into());
+        }
+        match self.resolver.lookup_ipv6_first(domain).await {
+            Some(v6) => Ok(v6?.into()),
+            None => Err(format!("{} has no address", self.host).into()),
+        }
+    }
+}
+
+fn set_status(
+    status: &ServiceStatusHandle,
+    state: ServiceState,
+    failed: bool,
+) -> windows_service::Result<()> {
+    status.set_service_status(ServiceStatus {
+        service_type: ServiceType::OWN_PROCESS,
+        current_state: state,
+        controls_accepted: match state {
+            ServiceState::Running | ServiceState::Paused => {
+                ServiceControlAccept::STOP
+                    | ServiceControlAccept::SHUTDOWN
+                    | ServiceControlAccept::PAUSE_CONTINUE
+            }
+            _ => ServiceControlAccept::empty(),
+        },
+        exit_code: if failed {
+            ServiceExitCode::ServiceSpecific(1)
+        } else {
+            ServiceExitCode::Win32(0)
+        },
+        checkpoint: 0,
+        wait_hint: Duration::from_secs(30),
+        process_id: None,
+    })
+}
@@ -0,0 +1,160 @@
+use rama::error::BoxError;
+use rama::tls::boring::core::bn::BigNum;
+use rama::tls::boring::core::ecdsa::EcdsaSig;
+use rama::tls::boring::core::sha::sha256;
+use rcgen::{Error, PublicKeyData, SignatureAlgorithm, SigningKey, PKCS_ECDSA_P256_SHA256};
+use windows::core::{Owned, Result as WinResult, HSTRING};
+use windows::Win32::Foundation::{NTE_BAD_KEY, NTE_BAD_KEYSET};
+use windows::Win32::Security::Cryptography::*;
+
+const KEY_NAME: &str = "Strix Firewall CA";
+
+/// A P-256 key held by the TPM. Signing asks the TPM to sign, so the private key never leaves it.
+pub struct CaKey {
+    // Fields drop in order, so the key handle closes before its provider's.
+    key_handle: Owned<NCRYPT_KEY_HANDLE>,
+    _provider_handle: Owned<NCRYPT_PROV_HANDLE>,
+    /// 0x04 || X || Y, the form rcgen writes into a certificate's SubjectPublicKeyInfo.
+    public_point: Vec<u8>,
+}
+
+impl CaKey {
+    /// A machine key, so the service and an elevated installer share it.
+    pub fn load_or_create() -> Result<Self, BoxError> {
+        match open_key(KEY_NAME, NCRYPT_MACHINE_KEY_FLAG)? {
+            Some(key) => Ok(key),
+            None => Ok(create_key(KEY_NAME, NCRYPT_MACHINE_KEY_FLAG)?),
+        }
+    }
+
+    pub(super) fn delete_machine_key() -> Result<(), BoxError> {
+        if let Some(key) = open_key(KEY_NAME, NCRYPT_MACHINE_KEY_FLAG)? {
+            key.delete_from_tpm()?;
+        }
+        Ok(())
+    }
+
+    /// A per-user key under a random name, which needs no elevation; `delete_from_tpm` it after.
+    pub fn create_test_key() -> WinResult<Self> {
+        let name = format!("Strix Firewall test {:016x}", rand::random::<u64>());
+        create_key(&name, NCRYPT_FLAGS(0))
+    }
+
+    /// Deletes the key from the TPM, not just this handle to it.
+    pub fn delete_from_tpm(mut self) -> WinResult<()> {
+        // NCryptDeleteKey also frees the handle, so the Owned mustn't free it again.
+        let key_handle = std::mem::take(&mut *self.key_handle);
+        unsafe { NCryptDeleteKey(key_handle, 0) }
+    }
+
+    /// Takes both handles and reads the key's public point once, for rcgen.
+    fn from_handles(
+        provider_handle: Owned<NCRYPT_PROV_HANDLE>,
+        key_handle: Owned<NCRYPT_KEY_HANDLE>,
+    ) -> WinResult<Self> {
+        // A BCRYPT_ECCKEY_BLOB header, then X and Y.
+        const HEADER_LEN: usize = size_of::<BCRYPT_ECCKEY_BLOB>();
+        let mut blob = [0u8; HEADER_LEN + 64];
+        let mut blob_len = 0;
+        unsafe {
+            NCryptExportKey(
+                *key_handle,
+                None,
+                BCRYPT_ECCPUBLIC_BLOB,
+                None,
+                Some(&mut blob),
+                &mut blob_len,
+                NCRYPT_FLAGS(0),
+            )?
+        };
+        let (header, x_and_y) = blob.split_at(HEADER_LEN);
+        let is_p256 = header[..4] == BCRYPT_ECDSA_PUBLIC_P256_MAGIC.to_le_bytes();
+        if !is_p256 || blob_len as usize != blob.len() {
+            return Err(windows::core::Error::new(NTE_BAD_KEY, "key is not an ECDSA P-256 key"));
+        }
+        let public_point = [&[0x04], x_and_y].concat();
+        Ok(CaKey { key_handle, _provider_handle: provider_handle, public_point })
+    }
+}
+
+impl PublicKeyData for CaKey {
+    fn der_bytes(&self) -> &[u8] {
+        &self.public_point
+    }
+
+    fn algorithm(&self) -> &'static SignatureAlgorithm {
+        &PKCS_ECDSA_P256_SHA256
+    }
+}
+
+impl SigningKey for CaKey {
+    fn sign(&self, msg: &[u8]) -> Result<Vec<u8>, Error> {
+        let mut r_and_s = [0u8; 64];
+        let mut signature_len = 0;
+        let signed = unsafe {
+            NCryptSignHash(
+                *self.key_handle,
+                None,
+                &sha256(msg),
+                Some(&mut r_and_s),
+                &mut signature_len,
+                NCRYPT_SILENT_FLAG,
+            )
+        };
+        signed.map_err(|_| Error::RemoteKeyError)?;
+        // NCrypt returns r || s, each half the length; X.509 wants DER SEQUENCE { r, s }.
+        let (r, s) = r_and_s[..signature_len as usize].split_at(signature_len as usize / 2);
+        let der = BigNum::from_slice(r)
+            .and_then(|r| EcdsaSig::from_private_components(r, BigNum::from_slice(s)?))
+            .and_then(|signature| signature.to_der());
+        der.map_err(|_| Error::RemoteKeyError)
+    }
+}
+
+/// `None` if the TPM holds no key by that name.
+/// `scope` is `NCRYPT_MACHINE_KEY_FLAG`, or empty for the current user's keys.
+fn open_key(name: &str, scope: NCRYPT_FLAGS) -> WinResult<Option<CaKey>> {
+    let provider_handle = open_tpm_provider()?;
+    let mut key_handle = NCRYPT_KEY_HANDLE::default();
+    let opened = unsafe {
+        NCryptOpenKey(
+            *provider_handle,
+            &mut key_handle,
+            &HSTRING::from(name),
+            CERT_KEY_SPEC::default(), // legacy, unused by the TPM provider
+            scope | NCRYPT_SILENT_FLAG,
+        )
+    };
+    match opened {
+        Err(error) if error.code() == NTE_BAD_KEYSET => Ok(None),
+        Err(error) => Err(error),
+        Ok(()) => CaKey::from_handles(provider_handle, unsafe { Owned::new(key_handle) }).map(Some),
+    }
+}
+
+/// Generates the key inside the TPM, which never lets it out.
+fn create_key(name: &str, scope: NCRYPT_FLAGS) -> WinResult<CaKey> {
+    let provider_handle = open_tpm_provider()?;
+    let mut key_handle = NCRYPT_KEY_HANDLE::default();
+    unsafe {
+        NCryptCreatePersistedKey(
+            *provider_handle,
+            &mut key_handle,
+            NCRYPT_ECDSA_P256_ALGORITHM,
+            &HSTRING::from(name),
+            CERT_KEY_SPEC::default(), // legacy, unused by the TPM provider
+            scope,
+        )?
+    };
+    let key_handle = unsafe { Owned::new(key_handle) };
+    // Until finalized the key is only a handle; this generates and stores it.
+    unsafe { NCryptFinalizeKey(*key_handle, NCRYPT_SILENT_FLAG)? };
+    CaKey::from_handles(provider_handle, key_handle)
+}
+
+/// The Microsoft Platform Crypto Provider, which keeps its keys in the TPM.
+fn open_tpm_provider() -> WinResult<Owned<NCRYPT_PROV_HANDLE>> {
+    let mut provider_handle = NCRYPT_PROV_HANDLE::default();
+    unsafe { NCryptOpenStorageProvider(&mut provider_handle, MS_PLATFORM_CRYPTO_PROVIDER, 0)? };
+    Ok(unsafe { Owned::new(provider_handle) })
+}
@@ -0,0 +1,531 @@
+//! The notification-area icon, started at sign-in as the menu bar app is on macOS.
+
+use super::pipe::PIPE;
+use super::*;
+use muda::{IsMenuItem, Menu, MenuEvent, MenuItem, PredefinedMenuItem, Submenu};
+use serde::Deserialize;
+use std::io::{BufRead, BufReader, Cursor, Write};
+use std::os::windows::io::AsRawHandle;
+use std::sync::mpsc::{channel, Receiver, Sender};
+use std::time::Duration;
+use tray_icon::{Icon, MouseButtonState, TrayIcon, TrayIconBuilder, TrayIconEvent};
+use windows::core::{w, HRESULT, PCWSTR};
+use windows::Win32::Foundation::*;
+use windows::Win32::System::LibraryLoader::GetModuleHandleW;
+use windows::Win32::System::Pipes::GetNamedPipeServerProcessId;
+use windows::Win32::System::Threading::*;
+use windows::Win32::UI::Controls::*;
+use windows::Win32::UI::Shell::*;
+use windows::Win32::UI::WindowsAndMessaging::*;
+use windows_registry::CURRENT_USER;
+use windows_service::service::{Service, ServiceAccess, ServiceState, ServiceStatus};
+use windows_service::service_manager::{ServiceManager, ServiceManagerAccess};
+
+const MENU_PAUSE: &str = "pause";
+const MENU_RESTART: &str = "restart";
+const MENU_LOG: &str = "log";
+const MENU_QUIT: &str = "quit";
+/// Also the service's requests, and `allow` the elevated `firewall-tray` command.
+const ALLOW: &str = "allow";
+const ALLOW_ONCE: &str = "allow-once";
+const LOGO: &[u8] = include_bytes!("tray.png");
+/// Where blocked packages are listed, below Open logs.
+const BLOCKED_AT: usize = 5;
+const BLOCKED_KEPT: usize = 10;
+
+/// Runs until Quit, once per session.
+pub fn run() -> Result<(), BoxError> {
+    let args: Vec<String> = std::env::args().skip(1).collect();
+    if let [verb, id, label @ ..] = &args[..] {
+        if verb == ALLOW {
+            // Run by `run_elevated`, so the service can tell an admin asked.
+            let trusted = ask_service(&format!("{ALLOW} {id}"))
+                .and_then(|reply| answered(&format!("Trusted {}", label.join(" ")), &reply));
+            if let Err(error) = trusted {
+                show_error(error);
+                std::process::exit(1);
+            }
+            return Ok(());
+        }
+    }
+    // Held until we exit.
+    let _mutex = unsafe { CreateMutexW(None, false, w!(r"Local\StrixFirewallTray"))? };
+    if unsafe { GetLastError() } == ERROR_ALREADY_EXISTS {
+        return Ok(());
+    }
+    let status = MenuItem::new("", false, None);
+    let pause = MenuItem::with_id(MENU_PAUSE, "", false, None);
+    let blocked_separator = PredefinedMenuItem::separator();
+    let menu = Menu::with_items(&[
+        &status,
+        &PredefinedMenuItem::separator(),
+        &pause,
+        &MenuItem::with_id(MENU_RESTART, "Restart", true, None),
+        &MenuItem::with_id(MENU_LOG, "Open logs", true, None),
+        &PredefinedMenuItem::separator(),
+        &MenuItem::with_id(MENU_QUIT, "Quit", true, None),
+    ])?;
+    let (logo, logo_size) = logo_mask()?;
+    let icon = TrayIconBuilder::new().with_menu(Box::new(menu.clone())).build()?;
+    let window = HWND(icon.window_handle());
+    let mut tray = Tray {
+        icon,
+        logo,
+        logo_size,
+        drawn: None,
+        status,
+        pause,
+        state: None,
+        menu,
+        blocked_separator,
+        blocked: Vec::new(),
+        allowed: channel(),
+    };
+    tray.update();
+    // The service holds a new package's download only while it is asked this often.
+    unsafe { SetTimer(None, 0, 500, None) };
+    let mut message = MSG::default();
+    while unsafe { GetMessageW(&mut message, None, 0, 0) }.0 > 0 {
+        unsafe { DispatchMessageW(&message) };
+        // WM_CLOSE, as the MSI sends, destroys the icon's window.
+        if !unsafe { IsWindow(Some(window)) }.as_bool() {
+            break;
+        }
+        // Ours, not the icon window's own hover timer.
+        if message.message == WM_TIMER && message.hwnd.is_invalid() {
+            tray.update();
+            tray.collect_blocks();
+        }
+        while let Ok(event) = TrayIconEvent::receiver().try_recv() {
+            // The menu opens on release, so this keeps it current.
+            if let TrayIconEvent::Click { button_state: MouseButtonState::Down, .. } = event {
+                tray.update();
+            }
+        }
+        while let Ok(event) = MenuEvent::receiver().try_recv() {
+            if event.id == MENU_QUIT {
+                return Ok(());
+            }
+            tray.on_menu(event.id.as_ref());
+        }
+    }
+    Ok(())
+}
+
+struct Tray {
+    icon: TrayIcon,
+    /// The logo's alpha channel; it is square.
+    logo: Vec<u8>,
+    logo_size: u32,
+    /// Whether the taskbar was light and the service screening when the icon was last set.
+    drawn: Option<(bool, bool)>,
+    status: MenuItem,
+    pause: MenuItem,
+    /// As the menu last showed it.
+    state: Option<ServiceState>,
+    menu: Menu,
+    blocked_separator: PredefinedMenuItem,
+    /// The most recent, as the menu lists them.
+    blocked: Vec<BlockedPackage>,
+    /// Allowed from another thread, so no longer listed.
+    allowed: (Sender<BlockedPackage>, Receiver<BlockedPackage>),
+}
+
+#[derive(Clone, PartialEq, Deserialize)]
+struct BlockedPackage {
+    id: u64,
+    eco: String,
+    name: String,
+    version: Option<String>,
+    filter: String,
+    reason: String,
+}
+
+impl BlockedPackage {
+    fn label(&self) -> String {
+        match &self.version {
+            Some(version) => format!("{} {version} ({})", self.name, self.eco),
+            None => format!("{} ({})", self.name, self.eco),
+        }
+    }
+
+    /// The denylist and OSV only flag packages known to be malicious; the age check only holds
+    /// back new ones.
+    fn malicious(&self) -> bool {
+        self.filter != "age"
+    }
+
+    /// Malware is never allowed, and a new package only by version.
+    fn trustable(&self) -> bool {
+        !self.malicious() && self.version.is_some()
+    }
+}
+
+impl Tray {
+    fn update(&mut self) {
+        self.state = service_status().map(|status| status.current_state);
+        let screening = self.state == Some(ServiceState::Running);
+        let light = light_taskbar();
+        if self.drawn != Some((light, screening)) {
+            let rgba = logo_rgba(&self.logo, light, screening);
+            if let Ok(icon) = Icon::from_rgba(rgba, self.logo_size, self.logo_size) {
+                let _ = self.icon.set_icon(Some(icon));
+            }
+            self.drawn = Some((light, screening));
+        }
+        let text = status_text(self.state);
+        let tip = format!("Strix Firewall: {text}");
+        let _ = self.icon.set_tooltip(Some(tip));
+        self.status.set_text(text);
+        let pause = if screening { "Pause" } else { "Resume" };
+        self.pause.set_text(pause);
+        self.pause.set_enabled(self.state.is_some());
+    }
+
+    /// The service hands each block over once, so whichever tray asks first shows it.
+    fn collect_blocks(&mut self) {
+        let allowed: Vec<_> = self.allowed.1.try_iter().collect();
+        if !allowed.is_empty() {
+            self.blocked.retain(|blocked| !allowed.contains(blocked));
+            self.list_blocked();
+        }
+        if self.state != Some(ServiceState::Running) {
+            return;
+        }
+        let Ok(reply) = ask_service("blocks") else {
+            return;
+        };
+        let Ok(packages) = serde_json::from_str::<Vec<BlockedPackage>>(&reply) else {
+            return;
+        };
+        let mut new = Vec::new();
+        for package in packages {
+            if !self.blocked.contains(&package) {
+                self.blocked.push(package.clone());
+                new.push(package);
+            }
+        }
+        if new.is_empty() {
+            return;
+        }
+        let excess = self.blocked.len().saturating_sub(BLOCKED_KEPT);
+        self.blocked.drain(..excess);
+        self.list_blocked();
+        // Off the UI thread, so the menu keeps working while they are open.
+        let allowed = self.allowed.0.clone();
+        std::thread::spawn(move || {
+            for package in new {
+                if let Some(trust) = alert(&package) {
+                    allow(package, trust, &allowed);
+                }
+            }
+        });
+    }
+
+    fn list_blocked(&self) {
+        while self.menu.items().len() > BLOCKED_AT + 2 {
+            self.menu.remove_at(BLOCKED_AT);
+        }
+        let _ = self.menu.insert(&self.blocked_separator, BLOCKED_AT);
+        for (i, package) in self.blocked.iter().enumerate() {
+            let verb = if package.malicious() { "Blocked" } else { "Held back" };
+            let reason = if package.malicious() {
+                format!("Malicious: {}", package.reason)
+            } else {
+                package.reason.clone()
+            };
+            let reason = MenuItem::new(reason, false, None);
+            let trustable = package.trustable();
+            let once =
+                MenuItem::with_id(format!("{ALLOW_ONCE}:{i}"), "Allow Once", trustable, None);
+            let always =
+                MenuItem::with_id(format!("{ALLOW}:{i}"), "Trust this version", trustable, None);
+            let items: &[&dyn IsMenuItem] =
+                if package.malicious() { &[&reason] } else { &[&reason, &once, &always] };
+            let label = format!("{verb} {}", package.label());
+            if let Ok(item) = Submenu::with_items(label, true, items) {
+                let _ = self.menu.insert(&item, BLOCKED_AT + 1 + i);
+            }
+        }
+    }
+
+    fn on_menu(&self, id: &str) {
+        if let Some((verb @ (ALLOW | ALLOW_ONCE), i)) = id.split_once(':') {
+            let trust = verb == ALLOW;
+            let package = i.parse().ok().and_then(|i: usize| self.blocked.get(i));
+            if let Some(package) = package.cloned() {
+                let allowed = self.allowed.0.clone();
+                std::thread::spawn(move || allow(package, trust, &allowed));
+            }
+            return;
+        }
+        let state = self.state;
+        let screening = state == Some(ServiceState::Running);
+        let action: fn() -> Result<(), BoxError> = match id {
+            MENU_PAUSE if screening => || Ok(open_service()?.pause().map(drop)?),
+            MENU_PAUSE if state == Some(ServiceState::Paused) => {
+                || Ok(open_service()?.resume().map(drop)?)
+            }
+            MENU_PAUSE => || Ok(open_service()?.start::<&str>(&[])?),
+            MENU_RESTART => {
+                // Off the UI thread, since stopping takes a while.
+                std::thread::spawn(|| restart().unwrap_or_else(show_error));
+                return;
+            }
+            MENU_LOG => {
+                let log = HSTRING::from(data_dir().as_path());
+                let none = PCWSTR::null();
+                unsafe { ShellExecuteW(None, w!("open"), &log, none, none, SW_SHOWNORMAL) };
+                return;
+            }
+            _ => return,
+        };
+        action().unwrap_or_else(show_error);
+    }
+}
+
+const ALLOW_ONCE_BUTTON: i32 = 100;
+const TRUST_BUTTON: i32 = 101;
+/// `firewall.rc`'s icon, embedded by `build.rs`.
+const STRIX_ICON: PCWSTR = PCWSTR(1 as _);
+
+/// `Some(true)` if the user chose to trust it, `Some(false)` to allow it once.
+/// A task dialog, as a message box can't have both buttons.
+fn alert(package: &BlockedPackage) -> Option<bool> {
+    let text = format!("{} {}.", package.label(), package.reason);
+    let (title, text, icon) = if package.malicious() {
+        let title = format!("Blocked malware: {}", package.label());
+        let text = text
+            + "\n\nIt was not installed. Don't install it from another source. If you didn't expect this "
+            + "package, a dependency may be compromised; tell your security team.";
+        (title, text, TD_ERROR_ICON)
+    } else {
+        ("Held back a new package".to_owned(), text, STRIX_ICON)
+    };
+    let button = |id, text| TASKDIALOG_BUTTON { nButtonID: id, pszButtonText: text };
+    let allow = [
+        button(ALLOW_ONCE_BUTTON, w!("Allow Once")),
+        button(TRUST_BUTTON, w!("Trust this version")),
+    ];
+    let buttons: &[_] = if package.trustable() { &allow } else { &[] };
+    let (title, text) = (HSTRING::from(title), HSTRING::from(linked(&text)));
+    let dialog = TASKDIALOGCONFIG {
+        cbSize: size_of::<TASKDIALOGCONFIG>() as u32,
+        dwFlags: TDF_ENABLE_HYPERLINKS,
+        // Where `STRIX_ICON` is loaded from; the `TD_` icons are Windows'.
+        hInstance: unsafe { GetModuleHandleW(None) }.ok()?.into(),
+        dwCommonButtons: TDCBF_CLOSE_BUTTON,
+        pszWindowTitle: w!("Strix Firewall"),
+        Anonymous1: TASKDIALOGCONFIG_0 { pszMainIcon: icon },
+        pszMainInstruction: PCWSTR(title.as_ptr()),
+        pszContent: PCWSTR(text.as_ptr()),
+        cButtons: buttons.len() as u32,
+        pButtons: buttons.as_ptr(),
+        pfCallback: Some(on_dialog),
+        ..Default::default()
+    };
+    let mut chosen = 0;
+    unsafe { TaskDialogIndirect(&dialog, Some(&raw mut chosen), None, None) }.ok()?;
+    match chosen {
+        ALLOW_ONCE_BUTTON => Some(false),
+        TRUST_BUTTON => Some(true),
+        _ => None,
+    }
+}
+
+/// Asks for the foreground, as `MB_SETFOREGROUND` did; Windows may still leave it behind.
+/// Opens the links `linked` made, in the browser.
+unsafe extern "system" fn on_dialog(
+    window: HWND,
+    event: TASKDIALOG_NOTIFICATIONS,
+    _: WPARAM,
+    link: LPARAM,
+    _: isize,
+) -> HRESULT {
+    if event == TDN_CREATED {
+        let _ = unsafe { SetForegroundWindow(window) };
+    } else if event == TDN_HYPERLINK_CLICKED {
+        let link = PCWSTR(link.0 as *const u16);
+        // Only web pages, whatever a block's reason contains.
+        let web = unsafe { link.to_string() }
+            .is_ok_and(|link| link.starts_with("https://") || link.starts_with("http://"));
+        if web {
+            let none = PCWSTR::null();
+            unsafe { ShellExecuteW(None, w!("open"), link, none, none, SW_SHOWNORMAL) };
+        }
+    }
+    S_OK
+}
+
+/// A task dialog's markup for the text, with each URL a link.
+fn linked(text: &str) -> String {
+    let mut marked = String::new();
+    let mut rest = text;
+    while let Some(start) =
+        ["https://", "http://"].iter().filter_map(|scheme| rest.find(scheme)).min()
+    {
+        let end = rest[start..].find(|c: char| c.is_whitespace() || c == ',' || c == ')');
+        let url = rest[start..end.map_or(rest.len(), |end| start + end)].trim_end_matches('.');
+        marked += &rest[..start];
+        marked += &format!("<a href=\"{url}\">{url}</a>");
+        rest = &rest[start + url.len()..];
+    }
+    marked + rest
+}
+
+/// Trusting writes the config for every user, so it goes through a UAC prompt.
+/// The elevated process shows its own errors and late replies.
+fn allow(package: BlockedPackage, trust: bool, allowed: &Sender<BlockedPackage>) {
+    let allowed_it = if trust {
+        run_elevated(&[ALLOW, &package.id.to_string(), &package.label()])
+            .map(|code| code == Some(0))
+    } else {
+        let title = format!("Allowed {} for the next minute", package.label());
+        ask_service(&format!("{ALLOW_ONCE} {}", package.id))
+            .and_then(|reply| answered(&title, &reply))
+            .map(|()| true)
+    };
+    match allowed_it {
+        Ok(true) => {
+            let _ = allowed.send(package);
+        }
+        Ok(false) => {}
+        Err(error) => show_error(error),
+    }
+}
+
+/// Tells the user, under `title`, when the install had already stopped waiting.
+fn answered(title: &str, reply: &str) -> Result<(), BoxError> {
+    match reply {
+        "ok" => Ok(()),
+        "late" => {
+            let text = "The install had already stopped waiting for it. Run it again to finish.";
+            let (title, text) = (HSTRING::from(title), HSTRING::from(text));
+            unsafe { MessageBoxW(None, &text, &title, MB_ICONINFORMATION | MB_SETFOREGROUND) };
+            Ok(())
+        }
+        other => Err(other.into()),
+    }
+}
+
+/// This program as an admin, waiting for its exit code; `None` if the user said no.
+fn run_elevated(args: &[&str]) -> Result<Option<u32>, BoxError> {
+    let exe = HSTRING::from(std::env::current_exe()?.as_path());
+    let parameters = HSTRING::from(args.join(" "));
+    let mut info = SHELLEXECUTEINFOW {
+        cbSize: size_of::<SHELLEXECUTEINFOW>() as u32,
+        fMask: SEE_MASK_NOCLOSEPROCESS,
+        lpVerb: w!("runas"),
+        lpFile: PCWSTR(exe.as_ptr()),
+        lpParameters: PCWSTR(parameters.as_ptr()),
+        nShow: SW_HIDE.0,
+        ..Default::default()
+    };
+    if let Err(error) = unsafe { ShellExecuteExW(&mut info) } {
+        if error.code() == ERROR_CANCELLED.to_hresult() {
+            return Ok(None);
+        }
+        return Err(error.into());
+    }
+    let process = unsafe { Owned::new(info.hProcess) };
+    unsafe { WaitForSingleObject(*process, INFINITE) };
+    let mut code = 1;
+    unsafe { GetExitCodeProcess(*process, &mut code)? };
+    Ok(Some(code))
+}
+
+/// One request per connection, as the service answers.
+fn ask_service(request: &str) -> Result<String, BoxError> {
+    let mut pipe = std::fs::OpenOptions::new().read(true).write(true).open(PIPE)?;
+    // Any program can create the pipe if it gets there before the service.
+    let mut server = 0;
+    unsafe { GetNamedPipeServerProcessId(HANDLE(pipe.as_raw_handle()), &mut server)? };
+    if service_status().and_then(|status| status.process_id) != Some(server) {
+        return Err("Another program is posing as the firewall service.".into());
+    }
+    pipe.write_all(format!("{request}\n").as_bytes())?;
+    let mut reply = String::new();
+    BufReader::new(pipe).read_line(&mut reply)?;
+    Ok(reply.trim_end().to_owned())
+}
+
+fn show_error(error: BoxError) {
+    let text = match error.source() {
+        Some(source) => format!("{error}: {source}"),
+        None => error.to_string(),
+    };
+    let text = HSTRING::from(text);
+    unsafe { MessageBoxW(None, &text, w!("Strix Firewall"), MB_ICONERROR) };
+}
+
+/// `None` when the service is not installed.
+fn service_status() -> Option<ServiceStatus> {
+    let manager =
+        ServiceManager::local_computer(None::<&str>, ServiceManagerAccess::CONNECT).ok()?;
+    let service = manager.open_service(SERVICE_NAME, ServiceAccess::QUERY_STATUS).ok()?;
+    service.query_status().ok()
+}
+
+fn light_taskbar() -> bool {
+    let personalize = r"Software\Microsoft\Windows\CurrentVersion\Themes\Personalize";
+    let Ok(key) = CURRENT_USER.open(personalize) else {
+        return false;
+    };
+    key.get_u32("SystemUsesLightTheme").is_ok_and(|light| light == 1)
+}
+
+fn status_text(state: Option<ServiceState>) -> &'static str {
+    match state {
+        Some(ServiceState::Running) => "Screening downloads",
+        Some(ServiceState::Paused) => "Paused",
+        _ => "Not running",
+    }
+}
+
+fn open_service() -> Result<Service, BoxError> {
+    let manager = ServiceManager::local_computer(None::<&str>, ServiceManagerAccess::CONNECT)?;
+    let access = ServiceAccess::QUERY_STATUS
+        | ServiceAccess::START
+        | ServiceAccess::STOP
+        | ServiceAccess::PAUSE_CONTINUE;
+    Ok(manager.open_service(SERVICE_NAME, access)?)
+}
+
+/// Starting again re-reads the config.
+fn restart() -> Result<(), BoxError> {
+    let service = open_service()?;
+    if service.query_status()?.current_state != ServiceState::Stopped {
+        service.stop()?;
+    }
+    for _ in 0..60 {
+        if service.query_status()?.current_state == ServiceState::Stopped {
+            return Ok(service.start::<&str>(&[])?);
+        }
+        std::thread::sleep(Duration::from_millis(500));
+    }
+    Err("The service did not stop.".into())
+}
+
+/// The alpha channel of the RGBA logo, and its width.
+fn logo_mask() -> Result<(Vec<u8>, u32), BoxError> {
+    let mut reader = png::Decoder::new(Cursor::new(LOGO)).read_info()?;
+    let mut rgba = vec![0; reader.output_buffer_size().ok_or("logo too large")?];
+    let info = reader.next_frame(&mut rgba)?;
+    let mut alpha = Vec::with_capacity(rgba.len() / 4);
+    for pixel in rgba.chunks(4) {
+        alpha.push(pixel[3]);
+    }
+    Ok((alpha, info.width))
+}
+
+/// White on a dark taskbar and black on a light one, as macOS draws a template image; dimmed
+/// when not screening.
+fn logo_rgba(mask: &[u8], light: bool, screening: bool) -> Vec<u8> {
+    let shade = if light { 0 } else { 255 };
+    let mut rgba = Vec::with_capacity(mask.len() * 4);
+    for &alpha in mask {
+        let alpha = if screening { alpha } else { alpha / 2 };
+        rgba.extend([shade, shade, shade, alpha]);
+    }
+    rgba
+}
@@ -0,0 +1,41 @@
+use super::ca::remove_our_cas_except;
+use super::tpm::CaKey;
+use super::*;
+use std::io::ErrorKind;
+use std::path::Path;
+use tracing::info;
+
+/// Run by the MSI after it deletes the service, which would restore the hosts entries. Does
+/// nothing for what is already gone.
+pub fn uninstall() -> Result<(), BoxError> {
+    write_hosts_entries(&[])?;
+    remove_our_cas_except(None)?;
+    none_if_missing(LOCAL_MACHINE.remove_tree(REGISTRY_KEY))?;
+    CaKey::delete_machine_key()?;
+    let entries = match std::fs::read_dir(data_dir()) {
+        Err(error) if error.kind() == ErrorKind::NotFound => Vec::new(),
+        entries => entries?.collect::<Result<Vec<_>, _>>()?,
+    };
+    for path in entries.into_iter().map(|entry| entry.path()) {
+        // The admin's config stays for a reinstall, as on macOS.
+        if path != config_file() {
+            remove_path(&path)?;
+        }
+    }
+    // Fails while the config is in it.
+    let _ = std::fs::remove_dir(data_dir());
+    info!("removed the CA, its key and the data folder");
+    Ok(())
+}
+
+/// A file or a folder, if it is there.
+fn remove_path(path: &Path) -> std::io::Result<()> {
+    let removed = match path.is_dir() {
+        true => std::fs::remove_dir_all(path),
+        false => std::fs::remove_file(path),
+    };
+    match removed {
+        Err(error) if error.kind() == ErrorKind::NotFound => Ok(()),
+        removed => removed,
+    }
+}
@@ -63,9 +63,7 @@ impl Filter for Denylist {
    fn check<'a>(&'a self, registry: &'static Registry, pkg: &'a Package) -> VerdictFuture<'a> {
        Box::pin(async move {
            let eco = registry.osv_name;
-            let load = || async {
-                RwLock::new(Arc::new(load(&self.source, eco).await))
-            };
+            let load = || async { RwLock::new(Arc::new(load(&self.source, eco).await)) };
            let list = self.lists[eco].get_or_init(load).await;
            let list = Arc::clone(&list.read().expect("denylist lock"));
            match &*list {
@@ -143,7 +141,7 @@ pub fn describe(advisories: &[&Advisory]) -> String {

 /// A failed fetch leaves the last good list in place; a list that never loaded is retried every tick.
 async fn watch(source: DenylistSource, lists: Arc<Lists>) {
-    let period = Duration::from_secs(source.poll_secs);
+    let period = Duration::from_secs(source.poll_secs.get());
    let mut seen = revision(&source, None).await;
    loop {
        tokio::time::sleep(period).await;
@@ -3,6 +3,7 @@ pub mod denylist;
 pub mod osv;

 use super::registries::{Package, Registry};
+use crate::config::AllowedPackage;
 use crate::Firewall;
 use std::future::Future;
 use std::pin::Pin;
@@ -25,16 +26,19 @@ pub trait Filter: Send + Sync {
 }

 /// Asks every filter. A `Deny` wins; failing that, the first filter that could not tell.
+/// An allowed package skips only the age check, so malware is never let through.
 pub async fn consult(
    firewall: &Firewall,
    registry: &'static Registry,
    pkg: &Package,
 ) -> Option<(&'static str, Verdict)> {
-    if allowed(firewall, registry, pkg) {
-        return None;
-    }
+    let lifted = allowed(firewall, registry, pkg)
+        || firewall.age_check_lifted(registry.eco, |entry| matches(registry, pkg, entry));
    let mut unsure = None;
    for filter in firewall.filters() {
+        if lifted && filter.name() == "age" {
+            continue;
+        }
        match filter.check(registry, pkg).await {
            Verdict::Allow => continue,
            Verdict::Deny(reason) => return Some((filter.name(), Verdict::Deny(reason))),
@@ -49,13 +53,15 @@ fn allowed(firewall: &Firewall, registry: &Registry, pkg: &Package) -> bool {
    let Some(entries) = firewall.config.allow.get(registry.eco) else {
        return false;
    };
-    entries.iter().any(|entry| {
-        let name_matches = match registry.normalize {
-            Some(normalize) => normalize(&entry.name) == pkg.name,
-            None => entry.name == pkg.name,
-        };
-        // Go writes a leading v that the parsed version drops, and PEP 440 ignores one.
-        let version = entry.version.as_deref().map(|v| v.strip_prefix('v').unwrap_or(v));
-        name_matches && (version.is_none() || version == pkg.version.as_deref())
-    })
+    entries.iter().any(|entry| matches(registry, pkg, entry))
+}
+
+fn matches(registry: &Registry, pkg: &Package, entry: &AllowedPackage) -> bool {
+    let name_matches = match registry.normalize {
+        Some(normalize) => normalize(&entry.name) == pkg.name,
+        None => entry.name == pkg.name,
+    };
+    // Go writes a leading v that the parsed version drops, and PEP 440 ignores one.
+    let version = entry.version.as_deref().map(|v| v.strip_prefix('v').unwrap_or(v));
+    name_matches && (version.is_none() || version == pkg.version.as_deref())
 }
@@ -41,7 +41,11 @@ impl Filter for Osv {
            if hits.is_empty() {
                Verdict::Allow
            } else {
-                Verdict::Deny(format!("is flagged malicious by OSV ({})", hits.join(", ")))
+                let links: Vec<String> = hits
+                    .iter()
+                    .map(|id| format!("{id} https://osv.dev/vulnerability/{id}"))
+                    .collect();
+                Verdict::Deny(format!("is flagged malicious by OSV: {}", links.join(", ")))
            }
        })
    }
@@ -69,9 +69,16 @@ pub async fn screen(url: &str, firewall: &Firewall) -> Option<String> {
    };
    info!(eco = registry.eco, pkg = %pkg.label(), %url, "screening");
    match consult(firewall, registry, &pkg).await {
-        Some((_, Verdict::Deny(reason))) => {
+        Some((filter, Verdict::Deny(reason))) => {
+            if crate::blocks::block(registry.eco, &pkg, filter, &reason).await {
+                info!(eco = registry.eco, pkg = %pkg.label(), "allowed while held");
+                return None;
+            }
            Some(format!("{} {reason}", pkg.label()))
        }
+        Some((filter, Verdict::Unknown(e))) if !firewall.config.fail_open => {
+            Some(format!("{} could not be checked by {filter} ({e})", pkg.label()))
+        }
        _ => None,
    }
 }
@@ -36,7 +36,7 @@ pub struct Pattern {
 }

 /// Requests to the local server match on `prefix`; intercepted URLs match on `upstream`.
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct Registry {
    pub prefix: &'static str,
    pub eco: &'static str,
@@ -52,7 +52,7 @@ pub struct Registry {
 }

 /// A URL to fetch and a JSON pointer to the timestamp in its reply.
-#[derive(Debug)]
+#[derive(Debug, Clone)]
 pub struct Published {
    pub url: &'static str,
    pub pointer: &'static str,
@@ -63,6 +63,11 @@ impl Registry {
    pub fn host(&self) -> &'static str {
        host_of(self.upstream)
    }
+
+    /// What the config file calls it.
+    pub fn name(&self) -> &'static str {
+        self.prefix.trim_matches('/')
+    }
 }

 /// The host of an https:// URL, with the path dropped.
@@ -11,9 +11,12 @@ pub static PYPI: Registry = Registry {
    normalize: Some(pep503),
    patterns: &[
        Pattern { re: r"^simple/(?<name>[^/]+)", rewrite: Some(FILES) },
+        // A mirror serves the files from its index host.
+        WHEEL,
+        SDIST,
        Pattern { re: "", rewrite: Some(FILES) },
    ],
-    published: None,
+    published: PUBLISHED,
 };

 /// The directories are hash shards, but the filename names the distribution.
@@ -24,25 +27,28 @@ pub static PYPI_FILES: Registry = Registry {
    upstream: "https://files.pythonhosted.org/",
    index: false,
    normalize: Some(pep503),
-    patterns: &[
-        // A wheel escapes - _ and . to _, so the first two fields are exactly name and version.
-        Pattern {
-            re: r"^packages/.+/(?<name>[^-/]+)-(?<version>[^-/]+)-[^/]+\.whl(?:\.metadata)?$",
-            rewrite: None,
-        },
-        // An sdist keeps the name's hyphens, so the version is the last field starting with a digit.
-        Pattern {
-            re: r"^packages/.+/(?<name>.+)-(?<version>\d[^-/]*)\.(?:tar\.gz|zip|tar\.bz2)$",
-            rewrite: None,
-        },
-    ],
-    published: Some(Published {
-        url: "https://pypi.org/pypi/{name}/{version}/json",
-        pointer: "/urls/0/upload_time_iso_8601",
-        escape: None,
-    }),
+    patterns: &[WHEEL, SDIST],
+    published: PUBLISHED,
 };

+// A wheel escapes - _ and . to _, so the first two fields are exactly name and version.
+const WHEEL: Pattern = Pattern {
+    re: r"^packages/.+/(?<name>[^-/]+)-(?<version>[^-/]+)-[^/]+\.whl(?:\.metadata)?$",
+    rewrite: None,
+};
+
+// An sdist keeps the name's hyphens, so the version is the last field starting with a digit.
+const SDIST: Pattern = Pattern {
+    re: r"^packages/.+/(?<name>.+)-(?<version>\d[^-/]*)\.(?:tar\.gz|zip|tar\.bz2)$",
+    rewrite: None,
+};
+
+const PUBLISHED: Option<Published> = Some(Published {
+    url: "https://pypi.org/pypi/{name}/{version}/json",
+    pointer: "/urls/0/upload_time_iso_8601",
+    escape: None,
+});
+
 /// PEP 503: runs of - _ and . collapse to one -, lowercased, which also un-escapes a wheel.
 fn pep503(name: &str) -> String {
    let mut out = String::with_capacity(name.len());
@@ -1,6 +1,6 @@
 use crate::http::{blocked, reply, text};
 use crate::policies::{self, Check, Decision};
-use crate::{Firewall, FirewallConfig};
+use crate::{telemetry, Firewall, FirewallConfig};
 use rama::http::body::util::BodyExt;
 use rama::http::client::EasyHttpWebClient;
 use rama::http::header::CONTENT_TYPE;
@@ -15,10 +15,11 @@ use std::sync::Arc;
 use tracing::{info, info_span, warn, Instrument};

 pub fn serve(config: FirewallConfig) -> std::io::Result<()> {
-    let bound = std::net::TcpListener::bind(("127.0.0.1", config.port))?;
+    let bound = std::net::TcpListener::bind(("127.0.0.1", config.port.get()))?;
    bound.set_nonblocking(true)?;
    crate::runtime()?.block_on(async move {
        let firewall = Arc::new(Firewall::new(config));
+        telemetry::heartbeat();
        let exec = Executor::default();
        let listener = TcpListener::try_from_std_tcp_listener(bound, exec.clone())?;
        let server = HttpServer::auto(exec).service(service_fn(move |req: Request| {
@@ -44,6 +45,7 @@ async fn screen(target: String, firewall: &Firewall) -> Response {
        }
        Decision::Block { eco, pkg, filter, reason } => {
            let reason = format!("{} {reason}", pkg.label());
+            telemetry::screened_package(eco, &pkg, Some(&reason));
            warn!(%eco, %filter, "blocked by firewall: {reason}");
            blocked(&reason)
        }
@@ -51,9 +53,11 @@ async fn screen(target: String, firewall: &Firewall) -> Response {
            match &check {
                Check::NoPackage => {}
                Check::Allowed(pkg) => {
+                    telemetry::screened_package(target.eco, pkg, None);
                    info!(eco = %target.eco, pkg = %pkg.label(), "cleared by every filter")
                }
                Check::Unverified { pkg, filter, error } => {
+                    telemetry::screened_package(target.eco, pkg, None);
                    info!(pkg = %pkg.label(), %filter, %error, "filter could not check, allowing")
                }
            }
@@ -1,10 +1,11 @@
+use crate::policies::Package;
 use crate::{Firewall, FirewallConfig};
 use rama::http::client::EasyHttpWebClient;
 use rama::http::header::CONTENT_TYPE;
 use rama::http::service::client::HttpClientExt;
 use rama::rt::blocking::Runtime;
 use serde_json::{json, Value};
-use std::sync::{LazyLock, Mutex};
+use std::sync::{LazyLock, Mutex, OnceLock};
 use std::time::Duration;
 use time::format_description::well_known::Rfc3339;
 use time::OffsetDateTime;
@@ -22,36 +23,43 @@ static TELEMETRY: LazyLock<Option<Telemetry>> = LazyLock::new(|| {
        return None;
    }
    let session = format!("{:016x}", rand::random::<u64>());
-    Some(Telemetry {
-        key,
-        session,
-        events: Mutex::default(),
-    })
+    Some(Telemetry { key, session, events: Mutex::default() })
 });

+/// How the firewall is running: "extension", "service", "wrapper" or "proxy".
+static MODE: OnceLock<&'static str> = OnceLock::new();
+
 struct Telemetry {
    key: &'static str,
    session: String,
    events: Mutex<Vec<Value>>,
 }

-pub fn screened(firewall: &Firewall, url: &str, blocked: bool) {
+pub fn screened(firewall: &Firewall, url: &str, reason: Option<&str>) {
    if TELEMETRY.is_none() {
        return;
    }
    let Some((registry, rest)) = firewall.match_on(url, |r| r.upstream) else {
        return;
    };
-    let Some(pkg) = firewall.resolve(registry, rest).pkg else {
-        return;
-    };
-    let mut properties = json!({ "eco": registry.eco, "blocked": blocked });
-    if blocked {
+    if let Some(pkg) = firewall.resolve(registry, rest).pkg {
+        screened_package(registry.eco, &pkg, reason);
+    }
+}
+
+pub fn screened_package(eco: &str, pkg: &Package, reason: Option<&str>) {
+    let mut properties = json!({ "eco": eco, "blocked": reason.is_some() });
+    if let Some(reason) = reason {
        properties["package"] = pkg.label().into();
+        properties["reason"] = reason.into();
    }
    record("package_screened", properties);
 }

+pub fn set_mode(mode: &'static str) {
+    MODE.set(mode).ok();
+}
+
 pub fn error(kind: &'static str) {
    record("error", json!({ "kind": kind }));
 }
@@ -81,6 +89,7 @@ pub fn flush() {
 fn record(event: &str, mut properties: Value) {
    let Some(telemetry) = &*TELEMETRY else { return };
    properties["distinct_id"] = telemetry.session.clone().into();
+    properties["mode"] = MODE.get().copied().into();
    properties["os"] = std::env::consts::OS.into();
    properties["arch"] = std::env::consts::ARCH.into();
    properties["$process_person_profile"] = false.into();
@@ -0,0 +1,34 @@
+use firewall::blocks::{answer, block};
+use firewall::policies::Package;
+use firewall::Firewall;
+use std::path::Path;
+use std::time::Duration;
+
+#[tokio::test]
+async fn allowing_once_releases_the_held_download() {
+    let firewall = Firewall::default();
+    let config = Path::new("/nonexistent/config.json");
+    let pkg = Package { name: "left-pad".into(), version: Some("1.3.0".into()) };
+    assert!(!block("npm", &pkg, "age", "is new").await, "held while nothing was asking");
+    answer(&firewall, config, "blocks");
+
+    let held = tokio::spawn(async move { block("npm", &pkg, "age", "is new").await });
+    let id = loop {
+        let blocks: serde_json::Value =
+            serde_json::from_str(&answer(&firewall, config, "blocks")).unwrap();
+        if let Some(id) = blocks[0]["id"].as_u64() {
+            break id;
+        }
+        tokio::time::sleep(Duration::from_millis(10)).await;
+    };
+    assert_eq!(answer(&firewall, config, &format!("allow-once {id}")), "ok");
+    assert!(held.await.unwrap(), "the waiting download goes through");
+    assert!(
+        firewall.age_check_lifted("npm", |p| p.name == "left-pad"),
+        "and the rest of the install"
+    );
+    assert!(
+        !block("npm", &Package { name: "evil".into(), version: None }, "denylist", "is malware")
+            .await
+    );
+}
@@ -1,13 +1,13 @@
-use firewall::config::path;
+use firewall::config::{path, AllowedPackage};
 use firewall::policies::filters::consult;
-use firewall::policies::Package;
+use firewall::policies::{screen, Package};
 use firewall::{Firewall, FirewallConfig};

 #[test]
 fn a_file_only_has_to_set_what_it_changes() {
    let config: FirewallConfig = serde_json::from_str(r#"{"fail_open": false}"#).expect("parses");
    assert!(!config.fail_open);
-    assert_eq!(config.port, firewall::DEFAULT_PORT);
+    assert_eq!(config.port.get(), firewall::DEFAULT_PORT);
 }

 #[test]
@@ -15,19 +15,128 @@ fn a_misspelled_setting_is_an_error() {
    assert!(serde_json::from_str::<FirewallConfig>(r#"{"fail-open": false}"#).is_err());
 }

+#[test]
+fn nonsense_values_are_errors() {
+    let file = std::env::temp_dir().join(format!("firewall-nonsense-{}.json", std::process::id()));
+    for bad in [
+        r#"{"allow": {"nmp": [{"name": "left-pad"}]}}"#,
+        r#"{"denylist": {"poll_secs": 0}}"#,
+        r#"{"denylist": {"base": "raw.githubusercontent.com/usestrix"}}"#,
+        r#"{"denylist": {"revision": "https://"}}"#,
+        r#"{"port": 0}"#,
+        r#"{"min_age_hours": 18446744073709551615}"#,
+        r#"{"registries": {"npm": ["http://npm.example.com/"]}}"#,
+        r#"{"registries": {"npm": ["https://npm.example.com"]}}"#,
+        r#"{"registries": {"npm": ["https://npm.example.com:8443/"]}}"#,
+        r#"{"registries": {"npm": ["https://[email protected]/"]}}"#,
+        r#"{"registries": {"npm": ["https://npm.example.com/?a=/"]}}"#,
+    ] {
+        std::fs::write(&file, bad).expect("write");
+        assert!(FirewallConfig::load_from(std::slice::from_ref(&file)).is_err(), "{bad}");
+    }
+    std::fs::remove_file(&file).ok();
+}
+
 #[test]
 fn the_config_lives_under_the_config_directory() {
    let path = path().expect("a home directory");
    assert!(path.ends_with("config.json"), "{}", path.display());
 }

+#[test]
+fn a_later_file_wins_and_allow_lists_add_up() {
+    let dir = std::env::temp_dir().join(format!("firewall-layers-{}", std::process::id()));
+    std::fs::create_dir_all(&dir).expect("temp dir");
+    let user = dir.join("user.json");
+    let system = dir.join("system.json");
+    std::fs::write(
+        &user,
+        r#"{"min_age_hours": 1, "fail_open": false, "allow": {"npm": [{"name": "a"}]}}"#,
+    )
+    .expect("write");
+    std::fs::write(&system, r#"{"min_age_hours": 24, "allow": {"npm": [{"name": "b"}]}}"#)
+        .expect("write");
+    let missing = dir.join("missing.json");
+    let config = FirewallConfig::load_from(&[user, system, missing]).expect("loads");
+    std::fs::remove_dir_all(&dir).ok();
+    assert_eq!(config.min_age_hours, 24);
+    assert!(!config.fail_open);
+    let names: Vec<&str> = config.allow["npm"].iter().map(|p| p.name.as_str()).collect();
+    assert_eq!(names, ["a", "b"]);
+}
+
 #[tokio::test]
-async fn an_allowed_version_skips_the_filters() {
-    // An unreachable denylist would otherwise leave the package unchecked.
+async fn a_mirror_is_screened_like_the_registry_it_copies() {
+    let config = r#"{"registries": {"npm": ["https://npm.example.com/"]}}"#;
+    let firewall = Firewall::new(serde_json::from_str(config).expect("parses"));
+    assert!(firewall.hosts().contains(&"npm.example.com"));
+    let url = "https://npm.example.com/left-pad/-/left-pad-1.3.0.tgz";
+    let (registry, rest) = firewall.match_on(url, |r| r.upstream).expect("the mirror");
+    assert_eq!(
+        firewall.resolve(registry, rest).pkg.map(|p| p.label()),
+        Some("[email protected]".into())
+    );
+    let unknown = std::env::temp_dir().join(format!("firewall-mirror-{}.json", std::process::id()));
+    std::fs::write(&unknown, r#"{"registries": {"nmp": ["https://npm.example.com/"]}}"#)
+        .expect("write");
+    let loaded = FirewallConfig::load_from(std::slice::from_ref(&unknown));
+    std::fs::remove_file(&unknown).ok();
+    assert!(loaded.is_err());
+}
+
+#[tokio::test]
+async fn a_pypi_mirror_screens_the_files_it_serves() {
+    let config = r#"{"registries": {"pypi": ["https://art.example.com/pypi/"]}}"#;
+    let firewall = Firewall::new(serde_json::from_str(config).expect("parses"));
+    let url = "https://art.example.com/pypi/packages/ab/cd/six-1.16.0-py2.py3-none-any.whl";
+    let (registry, rest) = firewall.match_on(url, |r| r.upstream).expect("the mirror");
+    assert_eq!(firewall.resolve(registry, rest).pkg.map(|p| p.label()), Some("[email protected]".into()));
+}
+
+#[tokio::test]
+async fn an_allowed_version_is_still_checked_for_malware() {
+    // The unreachable denylist shows that it still runs.
    let config = r#"{"allow": {"go": [{"name": "golang.org/x/net", "version": "v0.20.0"}]}, "denylist": {"base": "http://127.0.0.1:1"}}"#;
    let firewall = Firewall::new(serde_json::from_str(config).expect("parses"));
-    let (registry, _) = firewall.match_on("/go/golang.org/x/net/@v/list", |r| r.prefix).expect("go");
-    let pkg = |version: &str| Package { name: "golang.org/x/net".into(), version: Some(version.into()) };
-    assert!(consult(&firewall, registry, &pkg("0.20.0")).await.is_none());
-    assert!(consult(&firewall, registry, &pkg("0.21.0")).await.is_some());
+    let (registry, _) =
+        firewall.match_on("/go/golang.org/x/net/@v/list", |r| r.prefix).expect("go");
+    let pkg = Package { name: "golang.org/x/net".into(), version: Some("0.20.0".into()) };
+    let verdict = consult(&firewall, registry, &pkg).await;
+    assert_eq!(verdict.map(|(filter, _)| filter), Some("denylist"));
+}
+
+#[tokio::test]
+async fn failing_closed_blocks_what_could_not_be_checked() {
+    let config = r#"{"fail_open": false, "denylist": {"base": "http://127.0.0.1:1"}}"#;
+    let firewall = Firewall::new(serde_json::from_str(config).expect("parses"));
+    let url = "https://registry.npmjs.org/left-pad/-/left-pad-1.3.0.tgz";
+    let blocked = screen(url, &firewall).await.unwrap_or_default();
+    assert!(blocked.contains("could not be checked"), "{blocked:?}");
+}
+
+#[tokio::test]
+async fn lifting_the_age_check_still_checks_for_malware() {
+    let config = r#"{"denylist": {"base": "http://127.0.0.1:1"}}"#;
+    let firewall = Firewall::new(serde_json::from_str(config).expect("parses"));
+    let (registry, _) =
+        firewall.match_on("/go/golang.org/x/net/@v/list", |r| r.prefix).expect("go");
+    let pkg = Package { name: "golang.org/x/net".into(), version: Some("0.20.0".into()) };
+    firewall.lift_age_check("go", AllowedPackage { name: pkg.name.clone(), version: None }, None);
+    let (filter, _) = consult(&firewall, registry, &pkg).await.expect("the denylist still runs");
+    assert_eq!(filter, "denylist");
+}
+
+#[test]
+fn allowing_keeps_the_rest_of_the_file() {
+    let path = std::env::temp_dir().join(format!("firewall-allow-{}.json", std::process::id()));
+    std::fs::write(&path, r#"{"fail_open": false}"#).expect("write");
+    for _ in 0..2 {
+        firewall::config::allow(&path, "npm", "left-pad", "1.3.0").expect("allow");
+    }
+    let text = std::fs::read_to_string(&path).expect("read");
+    std::fs::remove_file(&path).ok();
+    let config: FirewallConfig = serde_json::from_str(&text).expect("parses");
+    assert!(!config.fail_open);
+    assert_eq!(config.allow["npm"].len(), 1);
+    assert_eq!(config.allow["npm"][0].version.as_deref(), Some("1.3.0"));
 }
@@ -1,7 +1,9 @@
 use firewall::aliasing::forward::downgrade;
 use firewall::http::https_url;
-use firewall::Firewall;
+use firewall::{aliasing, Firewall, FirewallConfig};
 use rama::http::{Body, Request};
+use std::io::{Read, Write};
+use std::net::{TcpListener, TcpStream};

 fn request(target: &str, host: Option<&str>) -> Request {
    let mut builder = Request::builder().method("GET").uri(target);
@@ -35,6 +37,26 @@ fn requests_always_go_out_over_tls() {
    assert_eq!(https_url(&request("/six", None)), None);
 }

+#[test]
+fn a_plain_http_upstream_is_not_upgraded() {
+    let upstream = TcpListener::bind("127.0.0.1:0").expect("bind");
+    let addr = upstream.local_addr().expect("address");
+    std::thread::spawn(move || {
+        let (mut stream, _) = upstream.accept().expect("accept");
+        let _ = stream.read(&mut [0; 4096]);
+        let _ = stream.write_all(b"HTTP/1.1 200 OK\r\nContent-Length: 2\r\n\r\nok");
+    });
+
+    let port = aliasing::spawn(0, FirewallConfig::default()).expect("spawn");
+    let mut proxy = TcpStream::connect(("127.0.0.1", port)).expect("connect");
+    let request =
+        format!("GET http://{addr}/x HTTP/1.1\r\nHost: {addr}\r\nConnection: close\r\n\r\n");
+    proxy.write_all(request.as_bytes()).expect("write");
+    let mut response = String::new();
+    proxy.read_to_string(&mut response).expect("read");
+    assert!(response.starts_with("HTTP/1.1 200") && response.ends_with("ok"), "{response}");
+}
+
 #[tokio::test]
 async fn downgrade_touches_known_hosts_in_text_only() {
    let text = b"https://pypi.org/x https://example.com/y".to_vec();
@@ -43,3 +65,16 @@ async fn downgrade_touches_known_hosts_in_text_only() {
    let binary = vec![0x1f, 0x8b, 0xff, 0xfe];
    assert_eq!(downgrade(&firewall, binary.clone()), binary);
 }
+
+#[tokio::test]
+async fn a_mirror_stands_in_for_its_registry() {
+    let mut config = FirewallConfig::default();
+    config.registries.insert("pypi".into(), vec!["https://art.example.com/pypi/".into()]);
+    let firewall = Firewall::new(config);
+    let mirrored = firewall.mirrored("https://pypi.org/simple/six/".into());
+    assert_eq!(mirrored, "https://art.example.com/pypi/simple/six/");
+    let npm = "https://registry.npmjs.org/left-pad";
+    assert_eq!(firewall.mirrored(npm.into()), npm);
+    let links = b"https://art.example.com/pypi/packages/six.whl".to_vec();
+    assert_eq!(downgrade(&firewall, links), b"http://pypi.org/packages/six.whl".to_vec());
+}
@@ -36,7 +36,8 @@ pub fn all(port: u16) -> Vec<(&'static str, Outcome)> {
 fn run(probe: &Probe, port: u16) -> Outcome {
    let args = probe.args.iter().map(|arg| arg.to_string()).collect();
    let dir = probe.setup.and_then(|prepare| prepare());
-    match aliasing::run(port, &Invocation::new(probe.manager.command.into(), args), dir.as_deref()) {
+    match aliasing::run(port, &Invocation::new(probe.manager.command.into(), args), dir.as_deref())
+    {
        Ok(0) => Outcome::Ok,
        Ok(_) => Outcome::Failed,
        Err(e) if e.kind() == std::io::ErrorKind::NotFound => Outcome::Absent,
@@ -0,0 +1,21 @@
+#![cfg(windows)]
+
+use firewall::mitm::CertificateAuthority;
+use firewall::os::windows::CaKey;
+use rcgen::PublicKeyData;
+
+/// Skipped on machines without a TPM.
+#[test]
+fn key_signs_a_verifiable_ca() {
+    let key = match CaKey::create_test_key() {
+        Ok(key) => key,
+        Err(error) => return eprintln!("skipping, no TPM key: {error}"),
+    };
+    let ca = CertificateAuthority::generate(&["registry.npmjs.org"], &key);
+    let spki = key.subject_public_key_info();
+    key.delete_from_tpm().expect("delete the test key");
+    let ca = ca.expect("mint a ca");
+    let public = ca.crt.public_key().expect("ca public key");
+    assert!(ca.crt.verify(&public).expect("verify the ca"));
+    assert_eq!(public.public_key_to_der().unwrap(), spki);
+}
@@ -0,0 +1,193 @@
+<?xml version='1.0' encoding='windows-1252'?>
+<!--
+  Copyright (C) 2017 Christopher R. Field.
+
+  Licensed under the Apache License, Version 2.0 (the "License");
+  you may not use this file except in compliance with the License.
+  You may obtain a copy of the License at
+
+  http://www.apache.org/licenses/LICENSE-2.0
+
+  Unless required by applicable law or agreed to in writing, software
+  distributed under the License is distributed on an "AS IS" BASIS,
+  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+  See the License for the specific language governing permissions and
+  limitations under the License.
+-->
+
+<?if $(sys.BUILDARCH) = x64 or $(sys.BUILDARCH) = arm64 ?>
+    <?define PlatformProgramFilesFolder = "ProgramFiles64Folder" ?>
+<?else ?>
+    <?define PlatformProgramFilesFolder = "ProgramFilesFolder" ?>
+<?endif ?>
+
+<Wix xmlns='http://schemas.microsoft.com/wix/2006/wi' xmlns:util='http://schemas.microsoft.com/wix/UtilExtension'>
+
+    <Product
+        Id='*'
+        Name='strix-firewall'
+        UpgradeCode='D944C2F6-BF55-4B21-A60E-1BBDB1A66293'
+        Manufacturer='Strix'
+        Language='1033'
+        Codepage='1252'
+        Version='$(var.Version)'>
+
+        <Package Id='*'
+            Keywords='Installer'
+            Description='Screens package downloads for known malware before they reach your machine'
+            Manufacturer='Strix'
+            InstallerVersion='500'
+            Languages='1033'
+            Compressed='yes'
+            InstallScope='perMachine'
+            SummaryCodepage='1252'
+            />
+
+        <MajorUpgrade
+            Schedule='afterInstallInitialize'
+            DowngradeErrorMessage='A newer version of [ProductName] is already installed. Setup will now exit.'/>
+
+        <Media Id='1' Cabinet='media1.cab' EmbedCab='yes' DiskPrompt='CD-ROM #1'/>
+        <Property Id='DiskPrompt' Value='strix-firewall Installation'/>
+
+        <Directory Id='TARGETDIR' Name='SourceDir'>
+            <Directory Id='$(var.PlatformProgramFilesFolder)' Name='PFiles'>
+                <Directory Id='APPLICATIONFOLDER' Name='Strix Firewall'>
+                    <Component Id='Path' Guid='033B1050-23D0-4F5A-A0D3-F4757B4B67E0' KeyPath='yes'>
+                        <Environment
+                            Id='PATH'
+                            Name='PATH'
+                            Value='[APPLICATIONFOLDER]'
+                            Permanent='no'
+                            Part='last'
+                            Action='set'
+                            System='yes'/>
+                    </Component>
+                    <Component Id='binary0' Guid='*'>
+                        <File
+                            Id='exe0'
+                            Name='firewall.exe'
+                            DiskId='1'
+                            Source='$(var.CargoTargetBinDir)\firewall.exe'
+                            KeyPath='yes'/>
+                    </Component>
+                    <Component Id='binary1' Guid='*'>
+                        <File
+                            Id='exe1'
+                            Name='firewall-service.exe'
+                            DiskId='1'
+                            Source='$(var.CargoTargetBinDir)\firewall-service.exe'
+                            KeyPath='yes'/>
+                        <ServiceInstall
+                            Name='StrixFirewall'
+                            DisplayName='Strix Firewall'
+                            Description='Screens package downloads for known malware'
+                            Type='ownProcess'
+                            Start='auto'
+                            ErrorControl='normal'
+                            Vital='yes'>
+                            <!-- The default, except that interactive users (IU) may also start (RP), stop (WP) and pause (DT) it, as the tray does. -->
+                            <PermissionEx Sddl='D:(A;;CCLCSWRPWPDTLOCRRC;;;SY)(A;;CCDCLCSWRPWPDTLOCRSDRCWDWO;;;BA)(A;;CCLCSWRPWPDTLOCRRC;;;IU)(A;;CCLCSWLOCRRC;;;SU)'/>
+                        </ServiceInstall>
+                        <!-- Waits, so a service that cannot start fails the install. -->
+                        <ServiceControl Id='StrixFirewall' Name='StrixFirewall' Start='install' Stop='both' Remove='uninstall' Wait='yes'/>
+                        <!-- For clients that read no trust store. SSL_CERT_FILE would replace OpenSSL's bundle. -->
+                        <Environment Id='NODE_EXTRA_CA_CERTS' Name='NODE_EXTRA_CA_CERTS' Value='[CommonAppDataFolder]Strix Firewall\ca.pem' Action='set' System='yes'/>
+                        <Environment Id='UV_SYSTEM_CERTS' Name='UV_SYSTEM_CERTS' Value='1' Action='set' System='yes'/>
+                    </Component>
+                    <Component Id='binary2' Guid='*'>
+                        <File
+                            Id='exe2'
+                            Name='firewall-tray.exe'
+                            DiskId='1'
+                            Source='$(var.CargoTargetBinDir)\firewall-tray.exe'
+                            KeyPath='yes'/>
+                        <RegistryValue
+                            Root='HKLM'
+                            Key='SOFTWARE\Microsoft\Windows\CurrentVersion\Run'
+                            Name='Strix Firewall'
+                            Type='string'
+                            Value='"[#exe2]"'/>
+                    </Component>
+                </Directory>
+            </Directory>
+        </Directory>
+
+        <Feature
+            Id='Binaries'
+            Title='Application'
+            Description='Installs the firewall and its service.'
+            Level='1'
+            ConfigurableDirectory='APPLICATIONFOLDER'
+            AllowAdvertise='no'
+            Display='expand'
+            Absent='disallow'>
+            <ComponentRef Id='binary0'/>
+            <ComponentRef Id='binary1'/>
+            <ComponentRef Id='binary2'/>
+
+            <Feature
+                Id='Environment'
+                Title='PATH Environment Variable'
+                Description='Add the install location of the [ProductName] executable to the PATH system environment variable. This allows the [ProductName] executable to be called from any location.'
+                Level='1'
+                Absent='allow'>
+                <ComponentRef Id='Path'/>
+            </Feature>
+        </Feature>
+
+        <!-- Removing the app must not leave the hosts file pointing at a service that is gone. -->
+        <CustomAction
+            Id='UninstallFirewall'
+            FileKey='exe1'
+            ExeCommand='uninstall'
+            Execute='deferred'
+            Impersonate='no'
+            Return='check'/>
+        <!--
+          Registry hosts lead nowhere while the service is down, so bring it back, also when it fails to
+          start. Through sc.exe, as MsiServiceConfigFailureActions cannot restart a service.
+        -->
+        <CustomAction
+            Id='SetFailureActions'
+            Directory='APPLICATIONFOLDER'
+            ExeCommand='"[System64Folder]sc.exe" failure StrixFirewall reset= 3600 actions= restart/5000/restart/5000/restart/5000'
+            Execute='deferred'
+            Impersonate='no'
+            Return='check'/>
+        <CustomAction
+            Id='SetFailureFlag'
+            Directory='APPLICATIONFOLDER'
+            ExeCommand='"[System64Folder]sc.exe" failureflag StrixFirewall 1'
+            Execute='deferred'
+            Impersonate='no'
+            Return='check'/>
+        <!-- From the exit dialog, which runs as the signed-in user rather than elevated. -->
+        <CustomAction
+            Id='StartTray'
+            Directory='APPLICATIONFOLDER'
+            ExeCommand='"[#exe2]"'
+            Return='asyncNoWait'/>
+        <!-- Before its file is replaced or removed. Trays WM_CLOSE does not reach, as in other sessions, are terminated. -->
+        <util:CloseApplication Id='CloseTray' Target='firewall-tray.exe' CloseMessage='yes' RebootPrompt='no' TerminateProcess='0'/>
+        <InstallExecuteSequence>
+            <!-- An upgrade removes the old version too, but should keep screening. -->
+            <Custom Action='UninstallFirewall' After='DeleteServices'>REMOVE~="ALL" AND NOT UPGRADINGPRODUCTCODE</Custom>
+            <Custom Action='SetFailureActions' After='InstallServices'>NOT REMOVE~="ALL"</Custom>
+            <Custom Action='SetFailureFlag' After='SetFailureActions'>NOT REMOVE~="ALL"</Custom>
+            <!-- The default, before InstallFiles, is after RemoveFiles, which would find the tray still running. -->
+            <Custom Action='WixCloseApplications' Before='RemoveFiles'/>
+        </InstallExecuteSequence>
+
+        <SetProperty Id='ARPINSTALLLOCATION' Value='[APPLICATIONFOLDER]' After='CostFinalize'/>
+        <Property Id='ARPHELPLINK' Value='https://github.com/usestrix/firewall'/>
+
+        <UI>
+            <UIRef Id='WixUI_FeatureTree'/>
+            <Publish Dialog='WelcomeDlg' Control='Next' Event='NewDialog' Value='CustomizeDlg' Order='99'>1</Publish>
+            <Publish Dialog='CustomizeDlg' Control='Back' Event='NewDialog' Value='WelcomeDlg' Order='99'>1</Publish>
+            <Publish Dialog='ExitDialog' Control='Finish' Event='DoAction' Value='StartTray' Order='1'>NOT Installed</Publish>
+        </UI>
+    </Product>
+
+</Wix>
@@ -4,7 +4,16 @@ members = ["cargo:core"]
 [dist]
 cargo-dist-version = "0.32.0"
 ci = "github"
-installers = ["shell", "powershell", "homebrew"]
-tap = "usestrix/homebrew-tap"
-publish-jobs = ["homebrew", "./publish-crates"]
+installers = ["shell", "powershell", "msi"]
+# core/wix/main.wxs is edited to install the service.
+allow-dirty = ["msi"]
+features = ["machine-wide"]
+source-tarball = false
+publish-jobs = ["./publish-crates"]
+post-announce-jobs = ["./release-notes"]
+global-artifacts-jobs = ["./build-macos-pkg"]
+github-build-setup = "../build-setup.yml"
 targets = ["aarch64-apple-darwin", "x86_64-apple-darwin", "aarch64-unknown-linux-gnu", "x86_64-unknown-linux-gnu", "x86_64-pc-windows-msvc"]
+
+[dist.github-custom-job-permissions]
+"publish-crates" = { contents = "read" }
@@ -0,0 +1,24 @@
+{
+  "fill" : {
+    "solid" : "srgb:0.07000,0.07000,0.07000,1.00000"
+  },
+  "groups" : [
+    {
+      "layers" : [
+        {
+          "image-name" : "logo.png",
+          "name" : "logo",
+          "position" : {
+            "scale" : 1.8,
+            "translation-in-points" : [0, 0]
+          }
+        }
+      ]
+    }
+  ],
+  "supported-platforms" : {
+    "squares" : [
+      "macOS"
+    ]
+  }
+}
@@ -1,68 +0,0 @@
-{
-  "images": [
-    {
-      "idiom": "mac",
-      "size": "16x16",
-      "scale": "1x",
-      "filename": "icon_16.png"
-    },
-    {
-      "idiom": "mac",
-      "size": "16x16",
-      "scale": "2x",
-      "filename": "icon_32.png"
-    },
-    {
-      "idiom": "mac",
-      "size": "32x32",
-      "scale": "1x",
-      "filename": "icon_32.png"
-    },
-    {
-      "idiom": "mac",
-      "size": "32x32",
-      "scale": "2x",
-      "filename": "icon_64.png"
-    },
-    {
-      "idiom": "mac",
-      "size": "128x128",
-      "scale": "1x",
-      "filename": "icon_128.png"
-    },
-    {
-      "idiom": "mac",
-      "size": "128x128",
-      "scale": "2x",
-      "filename": "icon_256.png"
-    },
-    {
-      "idiom": "mac",
-      "size": "256x256",
-      "scale": "1x",
-      "filename": "icon_256.png"
-    },
-    {
-      "idiom": "mac",
-      "size": "256x256",
-      "scale": "2x",
-      "filename": "icon_512.png"
-    },
-    {
-      "idiom": "mac",
-      "size": "512x512",
-      "scale": "1x",
-      "filename": "icon_512.png"
-    },
-    {
-      "idiom": "mac",
-      "size": "512x512",
-      "scale": "2x",
-      "filename": "icon_1024.png"
-    }
-  ],
-  "info": {
-    "author": "xcode",
-    "version": 1
-  }
-}
@@ -0,0 +1,93 @@
+import AppKit
+import Security
+
+struct BlockedPackage: Codable, Hashable, Identifiable {
+    let id: UInt64
+    let eco: String
+    let name: String
+    let version: String?
+    let filter: String
+    let reason: String
+
+    var label: String { version.map { "\(name) \($0)" } ?? name }
+    /// The denylist and OSV only flag packages known to be malicious; the age check only holds back new ones.
+    var malicious: Bool { filter != "age" }
+    /// Malware is never allowed, and a new package only by version.
+    var trustable: Bool { !malicious && version != nil }
+}
+
+enum Allowance {
+    /// For a minute, so the rest of that install can fetch it too.
+    case once
+    case always
+}
+
+@MainActor
+enum BlockAlert {
+    static func show(_ package: BlockedPackage) -> Allowance? {
+        let alert = NSAlert()
+        alert.addButton(withTitle: "OK")
+        if package.malicious {
+            alert.alertStyle = .critical
+            alert.messageText = "Blocked malware: \(package.label) (\(package.eco))"
+            setText(alert, "\(package.label) \(package.reason).\n\n"
+                + "It was not installed. Don't install it from another source. "
+                + "If you didn't expect this package, a dependency may be compromised; tell your security team.")
+        } else {
+            alert.messageText = "Held back a new package"
+            setText(alert, "\(package.label) (\(package.eco)) \(package.reason).")
+            if package.trustable {
+                alert.addButton(withTitle: "Allow Once")
+                alert.addButton(withTitle: "Trust this version")
+            }
+        }
+        NSApp.activate(ignoringOtherApps: true)
+        switch alert.runModal() {
+        case .alertSecondButtonReturn: return .once
+        case .alertThirdButtonReturn: return .always
+        default: return nil
+        }
+    }
+
+    static func late(_ package: BlockedPackage, _ allowance: Allowance) {
+        let alert = NSAlert()
+        alert.messageText = allowance == .once ? "Allowed \(package.label) for the next minute" : "Trusted \(package.label)"
+        alert.informativeText = "The install had already stopped waiting for it. Run it again to finish."
+        NSApp.activate(ignoringOtherApps: true)
+        alert.runModal()
+    }
+
+    /// An alert's own text is plain, so this text goes in a selectable field, where its links open on click.
+    private static func setText(_ alert: NSAlert, _ text: String) {
+        let linked = NSMutableAttributedString(string: text, attributes: [.font: NSFont.systemFont(ofSize: NSFont.smallSystemFontSize)])
+        let detector = try! NSDataDetector(types: NSTextCheckingResult.CheckingType.link.rawValue)
+        for match in detector.matches(in: text, range: NSRange(text.startIndex..., in: text)) {
+            if let url = match.url { linked.addAttribute(.link, value: url, range: match.range) }
+        }
+        let field = NSTextField(wrappingLabelWithString: "")
+        field.allowsEditingTextAttributes = true
+        field.isSelectable = true
+        field.attributedStringValue = linked
+        field.preferredMaxLayoutWidth = 300
+        field.frame.size = field.fittingSize
+        alert.accessoryView = field
+    }
+}
+
+enum AdminAuthorization {
+    /// The allowlist applies to every user of the Mac, so changing it takes an admin, as `sudo` would.
+    static func confirm() -> Bool {
+        var authorization: AuthorizationRef?
+        guard AuthorizationCreate(nil, nil, [], &authorization) == errAuthorizationSuccess,
+              let authorization else { return false }
+        defer { AuthorizationFree(authorization, []) }
+        return "system.preferences".withCString { name in
+            var item = AuthorizationItem(name: name, valueLength: 0, value: nil, flags: 0)
+            return withUnsafeMutablePointer(to: &item) { item in
+                var rights = AuthorizationRights(count: 1, items: item)
+                let flags: AuthorizationFlags = [.interactionAllowed, .extendRights]
+                return AuthorizationCopyRights(authorization, &rights, nil, flags, nil) == errAuthorizationSuccess
+            }
+        }
+    }
+}
@@ -10,11 +10,9 @@ struct ContentView: View {
            Divider()
            steps
            Divider()
-            transcript
-            Divider()
            footer
        }
-        .frame(width: 540, height: 560)
+        .frame(width: 540)
        .task { await model.refresh() }
        .onAppear(perform: recenterIfOffscreen)
        .onChange(of: model.completed) { done in
@@ -38,9 +36,11 @@ struct ContentView: View {

    private var header: some View {
        HStack(spacing: 14) {
-            Image(systemName: "shield.lefthalf.filled")
-                .font(.system(size: 34, weight: .light))
-                .foregroundStyle(.tint)
+            Image(nsImage: NSImage(named: "logo-transparent")!)
+                .renderingMode(.template)
+                .resizable()
+                .scaledToFit()
+                .frame(height: 40)
            VStack(alignment: .leading, spacing: 3) {
                Text("Firewall").font(.title2.weight(.semibold))
                Text("Screens package downloads before they reach your machine.")
@@ -70,27 +70,6 @@ struct ContentView: View {
        .padding(20)
    }

-    private var transcript: some View {
-        ScrollViewReader { proxy in
-            ScrollView {
-                VStack(alignment: .leading, spacing: 2) {
-                    ForEach(model.transcript.indices, id: \.self) { line in
-                        Text(model.transcript[line])
-                            .font(.system(.caption, design: .monospaced))
-                            .foregroundStyle(.secondary)
-                            .frame(maxWidth: .infinity, alignment: .leading)
-                            .id(line)
-                    }
-                }
-                .padding(12)
-            }
-            .onChange(of: model.transcript.count) { count in
-                proxy.scrollTo(count - 1)
-            }
-        }
-        .frame(maxHeight: .infinity)
-    }
-
    private var footer: some View {
        HStack {
            if model.busy { ProgressView().controlSize(.small) }
@@ -105,8 +84,11 @@ struct ContentView: View {
                    .font(.callout)
            }
            Spacer()
+            if model.awaitingApproval {
+                Button("Open System Settings") { model.openApprovalSettings() }
+            }
            Button("Uninstall") { Task { await model.uninstall() } }
-                .disabled(model.busy)
+                .disabled(model.busy && !model.awaitingApproval)
            Button("Install") { Task { await model.install() } }
                .keyboardShortcut(.defaultAction)
                .disabled(model.busy || model.completed)
@@ -129,9 +111,10 @@ private struct StepRow: View {
                Text(title).font(.body.weight(.medium))
                Text(note).font(.caption).foregroundStyle(.secondary)
                Text(status.detail)
-                    .font(.caption)
+                    .font(font)
                    .foregroundStyle(tint)
                    .textSelection(.enabled)
+                    .fixedSize(horizontal: false, vertical: true)
            }
            Spacer()
        }
@@ -146,7 +129,7 @@ private struct StepRow: View {
                .foregroundStyle(.secondary)
                .frame(width: 20, height: 20)
                .overlay(Circle().strokeBorder(.secondary.opacity(0.4)))
-        case .running:
+        case .running, .needsAction:
            ProgressView().controlSize(.small)
        case .done:
            Image(systemName: "checkmark.circle.fill").foregroundStyle(.green)
@@ -155,9 +138,15 @@ private struct StepRow: View {
        }
    }

+    private var font: Font {
+        if case .needsAction = status { return .system(size: 14) }
+        return .caption
+    }
+
    private var tint: Color {
        switch status {
        case .pending, .running: return .secondary
+        case .needsAction: return .orange
        case .done: return .green
        case .failed: return .orange
        }
@@ -33,12 +33,11 @@ enum SetupWindow {
 private struct MenuBarLabel: View {
    @ObservedObject var model: FirewallModel
    @Environment(\.openWindow) private var openWindow
-    @State private var raised = false

    var body: some View {
-        Image(nsImage: Self.icon).onAppear {
-            guard !raised, !model.screening else { return }
-            raised = true
+        Image(nsImage: Self.icon).task {
+            await model.refresh()
+            guard !model.configured else { return }
            SetupWindow.open(openWindow)
        }
    }
@@ -2,18 +2,21 @@ import AppKit
 import NetworkExtension
 import OSLog
 import Security
+import ServiceManagement
 import SystemExtensions

 enum StepStatus: Equatable {
    case pending
    case running(String)
+    /// Waiting on the user to do something outside the app.
+    case needsAction(String)
    case done(String)
    case failed(String)

    var detail: String {
        switch self {
        case .pending: return "Not started"
-        case let .running(text), let .done(text), let .failed(text): return text
+        case let .running(text), let .needsAction(text), let .done(text), let .failed(text): return text
        }
    }

@@ -27,11 +30,13 @@ enum FirewallError: Error, LocalizedError {
    case extensionUnavailable
    case screeningDidNotStart(NEVPNStatus)
    case extensionStopped(String)
+    case extensionRefused(String)

    var errorDescription: String? {
        switch self {
        case .extensionUnavailable: return "The extension is not running"
        case let .screeningDidNotStart(status): return "Screening did not start (\(status.label))"
+        case let .extensionRefused(reply): return "The extension replied \(reply)"
        case let .extensionStopped(reason):
            return "The extension stopped: \(reason). Its log: log show --last 5m --predicate 'subsystem BEGINSWITH \"\(FirewallIDs.appBundleID)\"'"
        }
@@ -43,14 +48,16 @@ final class FirewallModel: NSObject, ObservableObject {
    @Published private(set) var extensionStep = StepStatus.pending
    @Published private(set) var screeningStep = StepStatus.pending
    @Published private(set) var trustStep = StepStatus.pending
-    @Published private(set) var busy = false
+    @Published private var operations = 0
+    var busy: Bool { operations > 0 }
+    @Published private(set) var awaitingApproval = false
    @Published private(set) var completed = false
    @Published private(set) var removed = false
-    @Published private(set) var transcript: [String] = []
    @Published private(set) var screening = false
+    @Published private(set) var blocked: [BlockedPackage] = []

    private let logger = Logger(subsystem: FirewallIDs.appBundleID, category: "installer")
-    private var pendingRequest: CheckedContinuation<Void, Error>?
+    private var pendingRequest: (request: OSSystemExtensionRequest, continuation: CheckedContinuation<Void, Error>)?
    private var statusObserver: NSObjectProtocol?
    // NE only posts status notifications for connections that are still referenced.
    @Published private var watched: NETransparentProxyManager?
@@ -65,10 +72,10 @@ final class FirewallModel: NSObject, ObservableObject {
            let running = connection.status == .connected
            Task { @MainActor in self?.screening = running }
        }
-        Task {
-            await refresh()
-            if CommandLine.arguments.contains("--install") { await install() }
+        if CommandLine.arguments.contains("--install") {
+            Task { await install() }
        }
+        Task { await watchBlocks() }
    }

    // MARK: - Flows
@@ -76,6 +83,10 @@ final class FirewallModel: NSObject, ObservableObject {
    func refresh() async {
        if let manager = try? await loadManager() {
            watched = manager
+            // Nothing starts the tunnel at boot, so the app does once it is set up and not paused.
+            if manager.isEnabled && manager.connection.status == .disconnected {
+                try? manager.connection.startVPNTunnel()
+            }
            if manager.isEnabled {
                screeningStep = .done("Enabled (\(manager.connection.status.label))")
            }
@@ -88,8 +99,8 @@ final class FirewallModel: NSObject, ObservableObject {
    }

    func install() async {
-        busy = true
-        defer { busy = false }
+        operations += 1
+        defer { operations -= 1 }
        removed = false

        guard CompetingExtensions.confirmInstall() else {
@@ -109,16 +120,41 @@ final class FirewallModel: NSObject, ObservableObject {
                          work: trustCertificateAuthority)
        else { return }

+        do {
+            try SMAppService.mainApp.register()
+        } catch {
+            log("Could not open the app at login: \(error.localizedDescription)")
+        }
        completed = true
        log("Setup complete")
+        offerRestart()
+    }
+
+    /// Apps opened before setup, terminals included, only get the environment the env agent sets once reopened.
+    private func offerRestart() {
+        let alert = NSAlert()
+        alert.messageText = "Restart to finish setting up"
+        alert.informativeText = "Apps that were already open, such as terminals, can't install packages until they're reopened. Restarting reopens them all."
+        alert.addButton(withTitle: "Restart")
+        alert.addButton(withTitle: "Later")
+        NSApp.activate(ignoringOtherApps: true)
+        guard alert.runModal() == .alertFirstButtonReturn else { return }
+        let osascript = Process()
+        osascript.executableURL = URL(fileURLWithPath: "/usr/bin/osascript")
+        osascript.arguments = ["-e", "tell application \"loginwindow\" to «event aevtrest»"]
+        try? osascript.run()
    }

    /// After the admin gate, every stage runs even if an earlier one fails, so a partial uninstall never strands the rest.
    func uninstall() async {
-        busy = true
-        defer { busy = false }
+        operations += 1
+        defer { operations -= 1 }
        completed = false
        removed = false
+        // Stop waiting on an activation the user never approved; the deactivation below withdraws it.
+        if let pending = pendingRequest {
+            finishRequest(pending.request, .failure(CocoaError(.userCancelled)))
+        }

        // Install needs admin, so uninstall does too: untrusting the CA prompts for it, and a cancel stops here.
        guard await untrustAuthorities() else {
@@ -129,6 +165,7 @@ final class FirewallModel: NSObject, ObservableObject {
        await removeConfiguration()
        let strandedKey = removeStoredCA()
        await deactivate()
+        try? await SMAppService.mainApp.unregister()
        if let strandedKey { trustStep = .failed(strandedKey) }

        let failed = [extensionStep, screeningStep, trustStep].contains(where: \.isFailed)
@@ -151,16 +188,16 @@ final class FirewallModel: NSObject, ObservableObject {

    /// Restarting the tunnel rebuilds the provider, which is what makes it re-read the config.
    func restart() async {
-        busy = true
-        defer { busy = false }
+        operations += 1
+        defer { operations -= 1 }
        guard await stage(\.screeningStep, running: "Restarting screening", work: restartScreening) else { return }
        // A restart can mint a new CA when the screened hosts change.
        _ = await stage(\.trustStep, running: "Waiting for the extension's CA", work: trustCertificateAuthority)
    }

    func setEnabled(_ enabled: Bool) async {
-        busy = true
-        defer { busy = false }
+        operations += 1
+        defer { operations -= 1 }
        if enabled {
            _ = await stage(\.screeningStep, running: "Starting screening", work: startScreening)
        } else {
@@ -168,6 +205,47 @@ final class FirewallModel: NSObject, ObservableObject {
        }
    }

+    func openApprovalSettings() {
+        var pane = "x-apple.systempreferences:com.apple.preference.security"
+        if #available(macOS 15, *) {
+            pane = "x-apple.systempreferences:com.apple.ExtensionsPreferences?extensionPointIdentifier=com.apple.system_extension.network_extension"
+        }
+        if let url = URL(string: pane) { NSWorkspace.shared.open(url) }
+    }
+
+    /// Trusting changes the config for every user, so it takes an admin.
+    func allow(_ package: BlockedPackage, _ allowance: Allowance) async {
+        guard package.trustable else { return }
+        if allowance == .always, !AdminAuthorization.confirm() {
+            log("Trust cancelled for \(package.label)")
+            return
+        }
+        do {
+            let reply = try await providerMessage("\(allowance == .once ? "allow-once" : "allow") \(package.id)")
+            guard reply == "ok" || reply == "late" else { throw FirewallError.extensionRefused(reply) }
+            blocked.removeAll { $0 == package }
+            log("Allowed \(package.label) (\(package.eco)) \(allowance)")
+            if reply == "late" { BlockAlert.late(package, allowance) }
+        } catch {
+            log("Could not allow \(package.label): \(error.localizedDescription)")
+        }
+    }
+
+    /// The extension cannot message the app, so the app asks it for blocks.
+    private func watchBlocks() async {
+        while true {
+            if screening, let reply = try? await providerMessage("blocks"),
+               let packages = try? JSONDecoder().decode([BlockedPackage].self, from: Data(reply.utf8)) {
+                for package in packages where !blocked.contains(package) {
+                    blocked.append(package)
+                    if let allowance = BlockAlert.show(package) { await allow(package, allowance) }
+                }
+                if blocked.count > 10 { blocked.removeFirst(blocked.count - 10) }
+            }
+            try? await Task.sleep(nanoseconds: 500_000_000)
+        }
+    }
+
    private func stage(_ step: ReferenceWritableKeyPath<FirewallModel, StepStatus>,
                       running: String,
                       work: @MainActor () async throws -> String) async -> Bool {
@@ -249,10 +327,10 @@ final class FirewallModel: NSObject, ObservableObject {
        return true
    }

-    /// The extension wrote these as root, so the bundled CLI removes them behind an admin prompt; returns what to report if it failed.
+    /// The extension wrote these as root, so the bundled firewall-uninstall removes them behind an admin prompt; returns what to report if it failed.
    private func removeStoredCA() -> String? {
-        let cli = Bundle.main.path(forAuxiliaryExecutable: "firewall") ?? ""
-        let script = "do shell script quoted form of \"\(cli)\" & \" uninstall\" with administrator privileges"
+        let uninstaller = Bundle.main.path(forAuxiliaryExecutable: "firewall-uninstall") ?? ""
+        let script = "do shell script quoted form of \"\(uninstaller)\" with administrator privileges"
        var error: NSDictionary?
        NSAppleScript(source: script)?.executeAndReturnError(&error)
        if let error {
@@ -268,14 +346,18 @@ final class FirewallModel: NSObject, ObservableObject {
    private func submit(_ request: OSSystemExtensionRequest) async throws {
        request.delegate = self
        try await withCheckedThrowingContinuation { (continuation: CheckedContinuation<Void, Error>) in
-            pendingRequest = continuation
+            pendingRequest = (request, continuation)
            OSSystemExtensionManager.shared.submitRequest(request)
        }
    }

-    private func finishRequest(_ result: Result<Void, Error>) {
-        pendingRequest?.resume(with: result)
+    /// Callbacks for an abandoned request can still arrive, so only the pending one is finished.
+    private func finishRequest(_ request: OSSystemExtensionRequest, _ result: Result<Void, Error>) {
+        guard let pending = pendingRequest, pending.request === request else { return }
        pendingRequest = nil
+        awaitingApproval = false
+        NSApp.activate(ignoringOtherApps: true)
+        pending.continuation.resume(with: result)
    }

    // MARK: - Network extension
@@ -391,7 +473,6 @@ final class FirewallModel: NSObject, ObservableObject {
    }

    private func log(_ line: String) {
-        transcript.append("\(Date().formatted(date: .omitted, time: .standard))  \(line)")
        logger.info("\(line, privacy: .public)")
    }
 }
@@ -405,12 +486,14 @@ extension FirewallModel: OSSystemExtensionRequestDelegate {

    nonisolated func requestNeedsUserApproval(_ request: OSSystemExtensionRequest) {
        Task { @MainActor in
-            extensionStep = .running("Approve Firewall in System Settings › General › Login Items & Extensions")
-            log("Waiting for user approval")
-            // Only MDM can pre-approve a system extension, so take them to the switch.
-            if let pane = URL(string: "x-apple.systempreferences:com.apple.ExtensionsPreferences?extensionPointIdentifier=com.apple.system_extension.network_extension") {
-                NSWorkspace.shared.open(pane)
+            // macOS shows its own alert that opens System Settings; this says what to do there.
+            var instruction = "In System Settings › Privacy & Security, click Allow for StrixFirewall"
+            if #available(macOS 15, *) {
+                instruction = "In System Settings › General › Login Items & Extensions, click Network Extensions and turn on StrixFirewall"
            }
+            extensionStep = .needsAction(instruction)
+            awaitingApproval = true
+            log("Waiting for user approval")
        }
    }

@@ -420,12 +503,12 @@ extension FirewallModel: OSSystemExtensionRequestDelegate {
            if result == .willCompleteAfterReboot {
                log("Extension will finish installing after a reboot")
            }
-            finishRequest(.success(()))
+            finishRequest(request, .success(()))
        }
    }

    nonisolated func request(_ request: OSSystemExtensionRequest, didFailWithError error: Error) {
-        Task { @MainActor in finishRequest(.failure(error)) }
+        Task { @MainActor in finishRequest(request, .failure(error)) }
    }
 }

@@ -22,5 +22,28 @@ struct MenuBarView: View {
            Task { await model.restart() }
        }
        .disabled(model.busy)
+
+        if !model.blocked.isEmpty {
+            Divider()
+            ForEach(model.blocked) { package in
+                if !package.malicious {
+                    Menu("Held back \(package.label) (\(package.eco))") {
+                        Text(package.reason)
+                        Button("Allow Once") {
+                            Task { await model.allow(package, .once) }
+                        }
+                        .disabled(model.busy || !package.trustable)
+                        Button("Trust this version") {
+                            Task { await model.allow(package, .always) }
+                        }
+                        .disabled(model.busy || !package.trustable)
+                    }
+                } else {
+                    Menu("Blocked \(package.label) (\(package.eco))") {
+                        Text("Malicious: \(package.reason)")
+                    }
+                }
+            }
+        }
    }
 }
@@ -47,7 +47,8 @@ build() {
  echo "==> Building"
  xcodegen generate >/dev/null
  xcodebuild -project Firewall.xcodeproj -scheme StrixFirewall -configuration $CONFIGURATION \
-    -derivedDataPath build CODE_SIGNING_ALLOWED=NO CODE_SIGNING_REQUIRED=NO \
+    -destination generic/platform=macOS \
+    -derivedDataPath build CURRENT_PROJECT_VERSION="$(date +%s)" CODE_SIGNING_ALLOWED=NO CODE_SIGNING_REQUIRED=NO \
    CODE_SIGN_IDENTITY="" CODE_SIGN_ENTITLEMENTS="" build >/dev/null
 }

@@ -55,7 +56,7 @@ sign() {
  echo "==> Signing with $IDENTITY"
  cp "$(profile_for $APP_ID)" "$APP/Contents/embedded.provisionprofile"
  cp "$(profile_for $EXT_ID)" "$EXT/Contents/embedded.provisionprofile"
-  codesign --force --options runtime --timestamp -s "$IDENTITY" "$APP/Contents/MacOS/firewall"
+  codesign --force --options runtime --timestamp -s "$IDENTITY" "$APP/Contents/MacOS/firewall-uninstall"
  codesign --force --options runtime --timestamp \
    --entitlements Extension/Extension.entitlements -s "$IDENTITY" "$EXT"
  codesign --force --options runtime --timestamp \
@@ -10,7 +10,7 @@ settings:
    "CARGO_PROFILE[config=Debug]": debug
    "LIBRARY_SEARCH_PATHS[arch=arm64]": $(SRCROOT)/../core/target/aarch64-apple-darwin/$(CARGO_PROFILE)
    "LIBRARY_SEARCH_PATHS[arch=x86_64]": $(SRCROOT)/../core/target/x86_64-apple-darwin/$(CARGO_PROFILE)
-    ARCHS: arm64
+    ARCHS: arm64 x86_64
    "ONLY_ACTIVE_ARCH[config=Debug]": "YES"
    SWIFT_VERSION: "5.0"
    DEVELOPMENT_TEAM: ${TEAM}
@@ -19,6 +19,8 @@ settings:
    ENABLE_DEBUG_DYLIB: "NO"
    CODE_SIGN_STYLE: Automatic
    CODE_SIGN_IDENTITY: Apple Development
+    # build.sh sets a fresh one per build; macOS only replaces an installed extension whose version differs.
+    CURRENT_PROJECT_VERSION: "1"

 packages:
  Rama:
@@ -42,6 +44,7 @@ targets:
      properties:
        CFBundlePackageType: SYSX
        CFBundleShortVersionString: "0.1"
+        CFBundleVersion: $(CURRENT_PROJECT_VERSION)
        NSSystemExtensionUsageDescription: Firewall uses a network extension to screen package downloads before they install.
        NetworkExtension:
          NEMachServiceName: ${TEAM}.com.usestrix.firewall.extension
@@ -102,6 +105,7 @@ targets:
      path: App/Info.plist
      properties:
        CFBundleShortVersionString: "0.1"
+        CFBundleVersion: $(CURRENT_PROJECT_VERSION)
        LSMinimumSystemVersion: $(MACOSX_DEPLOYMENT_TARGET)
        NSSystemExtensionUsageDescription: Firewall uses a network extension to screen package downloads before they install.
        LSUIElement: true
@@ -118,14 +122,22 @@ targets:
      - target: Extension
        embed: true
        codeSign: true
-    # Uninstall runs the CLI as root to remove what the extension left.
+    # Uninstall runs this as root to remove what the extension left.
    postBuildScripts:
-      - name: Embed the CLI
+      - name: Embed firewall-uninstall
        basedOnDependencyAnalysis: false
        script: |
          export PATH="$HOME/.cargo/bin:$PATH"
          unset CC CXX CFLAGS CXXFLAGS
          export SDKROOT="$(xcrun --sdk macosx --show-sdk-path)"
          cd "$SRCROOT/../core"
-          cargo build --bin firewall --target aarch64-apple-darwin $([ "$CONFIGURATION" = Debug ] || echo --release)
-          cp "target/aarch64-apple-darwin/$CARGO_PROFILE/firewall" "$TARGET_BUILD_DIR/$EXECUTABLE_FOLDER_PATH/"
+          bins=
+          for arch in $ARCHS; do
+            case $arch in
+              arm64|arm64e) triple=aarch64-apple-darwin ;;
+              x86_64)       triple=x86_64-apple-darwin ;;
+            esac
+            cargo build --bin firewall-uninstall --features machine-wide --target $triple $([ "$CONFIGURATION" = Debug ] || echo --release)
+            bins="$bins target/$triple/$CARGO_PROFILE/firewall-uninstall"
+          done
+          lipo -create $bins -output "$TARGET_BUILD_DIR/$EXECUTABLE_FOLDER_PATH/firewall-uninstall"
Author	SHA1	Message	Date
ian-at-strix	27a1ac2d74	Update README to remove old asset Removed outdated asset links from README.	2026-10-26 14:19:01 -04:00
ian-at-strix	55e0f5f7b7	Claude demo	2026-10-26 14:15:26 -04:00
ian-at-strix	89b2bda2d8	Update README.md	2026-10-26 13:47:15 -04:00
ian-at-strix	7685049e68	Fix release notes (#101 )	2026-10-26 13:00:37 -04:00
ian-at-strix	c763b5e1ca	Version 0.1.2 (#100 )	2026-10-26 12:17:55 -04:00
ian-at-strix	efde5d935f	Build releases with the telemetry key (#99 )	2026-10-26 12:16:33 -04:00
ian-at-strix	0c2d1319fd	Version 0.1.1 (#98 )	2026-10-26 11:18:22 -04:00
ian-at-strix	0bc3b0c87a	Show only the pkg, msi and install commands in release notes (#97 )	2026-10-26 11:18:11 -04:00
ian-at-strix	7c6bd72767	Start screening when the app launches (#96 )	2026-10-26 11:06:28 -04:00
ian-at-strix	c94d982d1a	Open the app at login (#95 )	2026-10-26 10:33:13 -04:00
ian-at-strix	eaefe102d4	Version 0.1.0 (#94 )	2026-10-26 09:55:40 -04:00
ian-at-strix	56d34dae15	Add a README (#65 ) * Add a README * Tweaks * Tweaks * Tweaks * Install further up * Blogpost Link * Blogpost Link	2026-10-23 13:57:22 -04:00
ian-at-strix	2c5bb47251	Stop rebuilding the menu bar menu on every block poll (#93 )	2026-10-23 13:35:26 -04:00
ian-at-strix	5036ba69a5	Version 0.1.0-rc.2 (#92 )	2026-10-23 12:55:31 -04:00
ian-at-strix	c16be8d492	Screen downloads from a PyPI mirror listed only under pypi (#91 ) A PyPI mirror serves its files from the index host, so the pypi registry now names packages in /packages/ paths too, and checks their age.	2026-10-23 12:51:44 -04:00
ian-at-strixandIan Graham Martinez	a162c5307b	Re-land Windows Trust, logo and popup links (#90 ) * Let an admin trust a held-back package from the Windows tray * Offer Trust this version in the Windows block popup * Show the Strix logo in the Windows binaries and block popup * Make the links in the Windows block popups clickable --------- Co-authored-by: Ian Graham Martinez <[email protected]>	2026-10-23 12:50:29 -04:00
ian-at-strix	21f3cfb147	Send command-prefix downloads to the configured mirrors (#78 )	2026-10-23 12:28:49 -04:00
ian-at-strix	a3f53315cf	Add a rustfmt config matching the code's style, and format to it (#68 )	2026-10-23 12:18:25 -04:00
ian-at-strix	677884aa36	Change npm's lockfile registry URLs back to https:// after a wrapped run (#84 )	2026-10-23 12:13:49 -04:00
ian-at-strix	e6691b252c	Version 0.1.0-rc.1 to test the release pipeline (#88 )	2026-10-23 12:01:36 -04:00
ian-at-strix	a2f631866e	Build, sign and notarize Firewall.pkg in the release workflow (#85 ) * Build, sign and notarize Firewall.pkg in the release workflow * Stop publishing a Homebrew formula (#87)	2026-10-23 11:53:53 -04:00
ian-at-strix	b42185ee6f	Give every build a new bundle version so macOS replaces the installed extension (#76 )	2026-10-23 11:53:33 -04:00
ian-at-strix	97a5a148e0	Warn when npm or uv leaves http:// registry URLs in its lockfile (#83 )	2026-10-23 11:49:52 -04:00
ian-at-strixandIan Graham Martinez	877807740b	Allow a held-back package once from the Windows tray (#64 ) Co-authored-by: Ian Graham Martinez <[email protected]>	2026-10-23 11:25:50 -04:00
ian-at-strix	cd9b0614bc	Link OSV advisories in block reasons (#77 )	2026-10-23 11:11:14 -04:00
ian-at-strix	6cad09d32d	Make the links in the block popups clickable (#74 )	2026-10-23 10:58:18 -04:00
ian-at-strix	23db767cc1	Allow a held-back package once from the app, releasing the waiting download (#37 ) * Hold a held-back download open so allowing it lets it through * Allow a held-back package once from the app, releasing the waiting download	2026-10-23 10:55:03 -04:00
ian-at-strix	37a56fb7d2	Show the Windows service's blocks from the tray (#63 ) The service answers the tray's requests on a named pipe, as the macOS extension answers the app's messages. The tray asks for blocks every two seconds, pops each new one up and lists the last ten in its menu.	2026-10-23 10:52:09 -04:00
ian-at-strix	6c69036db0	Screen mirrors listed in the config file, and reject unusable config values (#73 ) * Screen mirrors listed in the config file * Reject config values the firewall cannot use	2026-10-22 18:26:59 -04:00
ian-at-strix	4fd3021760	Create the Windows data folder with its ACL instead of setting it after (#55 )	2026-10-22 18:25:28 -04:00
ian-at-strix	d01ac3634b	Let an allow entry lift only the age check, never the malware checks (#69 )	2026-10-22 18:11:30 -04:00
ian-at-strix	91da9d68c9	Let an admin trust a held-back version of a new package (#36 )	2026-10-22 17:57:31 -04:00
ian-at-strixandIan Graham Martinez	e0b723a732	Keep a Windows manager tied to the firewall that runs it (#5 ) On Windows the console sends Ctrl+C to both processes. The firewall exited at once with 0xC000013A, handing the prompt back while a .cmd shim's cmd.exe still asked "Terminate batch job (Y/N)?". It now ignores Ctrl+C and Ctrl+Break while the manager runs and exits with its code. A killed firewall also left the manager and its children running. The firewall now joins a kill-on-close job before spawning, so whatever is left dies with it. An argument with a line break, which Rust refuses to pass to a batch file, now says so instead of "batch file arguments are invalid". Co-authored-by: Ian Graham Martinez <[email protected]>	2026-10-22 17:42:27 -04:00
ian-at-strix	fc02226cd6	Build the machine-wide binaries only with the machine-wide feature (#67 )	2026-10-22 17:38:23 -04:00
ian-at-strix	5068b3578d	Log the Windows service's connection failures at warn (#66 )	2026-10-22 17:37:08 -04:00
ian-at-strix	8d781f3f98	Show a popup when pausing or resuming screening fails (#54 ) The service now answers Pause and Continue only after rewriting the hosts file, returning the write's error so the tray's ControlService call fails and shows it. The tray's popup includes the error's source, which windows-service's own message hides.	2026-10-22 17:33:56 -04:00
ian-at-strix	e521cbdefa	Show a popup when a package is blocked (#18 )	2026-10-22 16:58:13 -04:00
ian-at-strix	674f3bdcd3	Build the macOS app for Intel Macs too (#60 )	2026-10-22 16:48:01 -04:00
ian-at-strix	2df02bf23f	Restart the Windows service from the tray, to reload the config (#59 )	2026-10-22 16:40:49 -04:00
ian-at-strix	a3e5ab1802	Start the tray when the install finishes (#15 ) The MSI's exit dialog starts it from the unelevated UI process, so it runs as the signed-in user.	2026-10-22 16:28:09 -04:00
ian-at-strix	da750007fc	Show screening status in the Windows notification area (#14 ) * Show screening status in the Windows notification area firewall-tray.exe shows a tray icon: whether the service is screening, paused or not running, with Pause/Resume and Open log. The MSI starts it at every sign-in and closes it before replacing or removing it. The icon is the Strix logo, white on a dark taskbar and black on a light one like the macOS template image, and dimmed when not screening. tray.png is assets/logo-transparent.png scaled and padded to 32x32: sips -Z 32 logo-transparent.png --out a.png && sips -p 32 32 a.png --out tray.png * Open the folder of dated service logs from the tray	2026-10-22 16:28:08 -04:00
ian-at-strix	d9de2a8a94	Install machine-wide screening on Windows with an MSI (#11 ) The MSI installs both binaries, registers and starts the service with a DACL that lets interactive users start, stop and pause it, restarts it on failure, and sets NODE_EXTRA_CA_CERTS and UV_SYSTEM_CERTS. Removing it runs `firewall-service.exe uninstall` once the service is deleted, which clears the hosts entries and removes the CA, its TPM key and the data folder but the config.	2026-10-22 16:28:08 -04:00
ian-at-strix	b3f47664df	Forward plain-HTTP upstreams as asked (#1 ) The wrapper's forward proxy upgraded every request to HTTPS and rewrote links in index responses. Only an HTTPS registry is downgraded to reach us, so only that should be upgraded back and rewritten; anything else now goes out exactly as the client sent it, port included.	2026-10-22 16:11:31 -04:00
ian-at-strix	bdcc2e93dc	Move the macOS uninstall out of the CLI into its own binary (#56 )	2026-10-22 15:19:16 -04:00
ian-at-strixandIan Graham Martinez	9e457c4d69	Screen redirected registry traffic in a Windows service (#10 ) * Screen redirected registry traffic in a Windows service Each registry host gets its own loopback address, where a LocalSystem service serves mitm_service, connecting upstream through a resolver that ignores the hosts file. It trusts its CA machine-wide and serves the empty CRL that schannel needs. The service writes the hosts-file block once it listens. Pausing it removes the block and continuing rewrites it; a stop, crash or shutdown leaves it, so a restart fails closed and picks up a changed host list. * Explain the data folder ACL and the root store arguments * Use schannel for the root store * Free the parsed security descriptor on drop instead of through a closure * Rotate the service log daily with tracing-appender --------- Co-authored-by: Ian Graham Martinez <[email protected]>	2026-10-22 14:49:36 -04:00
ian-at-strixandIan Graham Martinez	7cafa16cc4	Hold the CA key in the TPM on Windows (#9 ) * Hold the CA key in the TPM on Windows A non-exportable machine key in the TPM, or in software where there is none, signs as the Secure Enclave key does on macOS. * Require the TPM for the Windows CA key A failure to open the TPM fell back to a software key, which minted a new CA and kept it for good. Fail instead, as macOS does without a Secure Enclave. * Use the windows crate for the TPM key --------- Co-authored-by: Ian Graham Martinez <[email protected]>	2026-10-22 10:53:51 -04:00
ian-at-strix	38d9a4500e	Layer a system config over the user's, and have the extension read only the system one (#43 )	2026-10-21 20:07:55 -04:00
ian-at-strix	d03c4cb6e3	Make the app icon an Icon Composer icon so macOS 26 doesn't put it in a grey bubble (#42 )	2026-10-21 18:15:02 -04:00
ian-at-strix	8f20758ba0	Offer a restart once setup finishes (#35 ) * Offer a restart once setup finishes * Describe the restart without naming one variable	2026-10-21 18:07:41 -04:00
ian-at-strix	577e0b7eb0	Screening events from the local proxy, and the mode each event came from (#41 )	2026-10-21 17:55:21 -04:00
ian-at-strix	f94d3bf211	Include why a package was blocked in the screening event (#39 )	2026-10-21 17:50:04 -04:00
ian-at-strix	753e21dd19	Block what could not be checked when screening fails closed (#20 )	2026-10-21 17:48:29 -04:00
ian-at-strix	7c128de056	Give the app the Strix logo as its icon (#34 )	2026-10-21 16:45:38 -04:00
ian-at-strix	64e938bf7a	Guide the user to the extension approval switch (#33 ) * Guide the user to the extension approval switch * Allow uninstalling while the extension waits for approval * Show the approval instruction in larger orange text * Leave opening System Settings to the macOS alert * Shrink the approval instruction slightly * Hide the setup log * Add a button that opens System Settings while approval is pending	2026-10-21 16:44:27 -04:00