ci(windows): wire SignPath test-signing for portable bundle

Add SignPath artifact configuration (windows-portable-v1) signing only the
first-party binaries orca-slicer.exe and OrcaSlicer.dll, plus verification
and inventory scripts. The Windows build job uploads the unsigned portable
bundle, submits it to SignPath (test-signing), verifies the returned
signatures, and rebuilds the installer/zip from the signed binaries.

project-slug matches the SignPath project (OrcaSlicer).

.github/workflows/build_all.yml

@@ -13,6 +13,8 @@ on:
      - 'localization/**'
      - 'resources/**'
      - ".github/workflows/build_*.yml"
+     - 'signpath/**'
+     - 'scripts/*.ps1'
      - 'scripts/flatpak/**'
 
   pull_request:
@@ -26,9 +28,11 @@ on:
      - '**/CMakeLists.txt'
      - 'version.inc'
      - ".github/workflows/build_*.yml"
+     - 'signpath/**'
      - 'build_linux.sh'
      - 'build_release_vs2022.bat'
      - 'build_release_macos.sh'
+     - 'scripts/*.ps1'
      - 'scripts/flatpak/**'
 
 

.github/workflows/build_orca.yml

@@ -292,6 +292,50 @@ jobs:
         #   WindowsSDKVersion: '10.0.26100.0\'
         run: .\build_release_vs.bat slicer
 
+      - name: Pack PDB
+        if: runner.os == 'Windows' && !vars.SELF_HOSTED
+        working-directory: ${{ github.workspace }}/build/src/Release
+        shell: cmd
+        run: '"C:/Program Files/7-Zip/7z.exe" a -m0=lzma2 -mx9 Debug_PDB_${{ env.ver }}_for_developers_only.7z  *.pdb'
+
+      - name: Upload unsigned Windows portable artifact for SignPath
+        id: upload-windows-portable
+        if: github.repository == 'OrcaSlicer/OrcaSlicer' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/heads/release/')) && runner.os == 'Windows' && !vars.SELF_HOSTED
+        uses: actions/upload-artifact@v7
+        with:
+          name: OrcaSlicer_Windows_${{ env.ver }}_portable_unsigned
+          path: ${{ github.workspace }}/build/OrcaSlicer
+          if-no-files-found: error
+
+      - name: Submit Windows portable artifact to SignPath
+        if: github.repository == 'OrcaSlicer/OrcaSlicer' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/heads/release/')) && runner.os == 'Windows' && !vars.SELF_HOSTED
+        uses: signpath/github-action-submit-signing-request@v2
+        with:
+          api-token: ${{ secrets.SIGNPATH_API_TOKEN }}
+          organization-id: ${{ secrets.SIGNPATH_ORGANIZATION_ID }}
+          project-slug: OrcaSlicer
+          signing-policy-slug: test-signing
+          artifact-configuration-slug: windows-portable-v1
+          github-artifact-id: ${{ steps.upload-windows-portable.outputs.artifact-id }}
+          wait-for-completion: true
+          output-artifact-directory: ${{ github.workspace }}/build/signpath/windows-portable
+
+      - name: Verify SignPath Windows portable signatures
+        if: github.repository == 'OrcaSlicer/OrcaSlicer' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/heads/release/')) && runner.os == 'Windows' && !vars.SELF_HOSTED
+        shell: pwsh
+        run: ./scripts/verify-authenticode.ps1 -ArtifactDirectory '${{ github.workspace }}/build/signpath/windows-portable'
+
+      - name: Replace Windows portable bundle with signed output
+        if: github.repository == 'OrcaSlicer/OrcaSlicer' && (github.ref == 'refs/heads/main' || startsWith(github.ref, 'refs/heads/release/')) && runner.os == 'Windows' && !vars.SELF_HOSTED
+        shell: pwsh
+        run: |
+          $source = Join-Path "${{ github.workspace }}" "build/signpath/windows-portable"
+          $destination = Join-Path "${{ github.workspace }}" "build/OrcaSlicer"
+          if (-not (Test-Path -LiteralPath $source -PathType Container)) {
+              throw "SignPath output directory not found: $source"
+          }
+          Get-ChildItem -LiteralPath $source -Force | Copy-Item -Destination $destination -Recurse -Force
+
       - name: Create installer Win
         if: runner.os == 'Windows' && !vars.SELF_HOSTED
         working-directory: ${{ github.workspace }}/build
@@ -301,14 +345,14 @@ jobs:
       - name: Pack app
         if: runner.os == 'Windows'
         working-directory: ${{ github.workspace }}/build
-        shell: cmd
-        run: '"C:/Program Files/7-Zip/7z.exe" a -tzip OrcaSlicer_Windows_${{ env.ver }}_portable.zip ${{ github.workspace }}/build/OrcaSlicer'
-
-      - name: Pack PDB
-        if: runner.os == 'Windows' && !vars.SELF_HOSTED
-        working-directory: ${{ github.workspace }}/build/src/Release
-        shell: cmd
-        run: '"C:/Program Files/7-Zip/7z.exe" a -m0=lzma2 -mx9 Debug_PDB_${{ env.ver }}_for_developers_only.7z  *.pdb'
+        shell: pwsh
+        run: |
+          $zipPath = "OrcaSlicer_Windows_${{ env.ver }}_portable.zip"
+          Remove-Item -LiteralPath $zipPath -Force -ErrorAction SilentlyContinue
+          & "C:/Program Files/7-Zip/7z.exe" a -tzip $zipPath "${{ github.workspace }}/build/OrcaSlicer"
+          if ($LASTEXITCODE -ne 0) {
+              exit $LASTEXITCODE
+          }
 
       - name: Upload artifacts Win zip
         if: runner.os == 'Windows'
@@ -316,6 +360,7 @@ jobs:
         with:
           name: OrcaSlicer_Windows_${{ env.ver }}_portable
           path: ${{ github.workspace }}/build/OrcaSlicer
+          if-no-files-found: error
 
       - name: Upload artifacts Win installer
         if: runner.os == 'Windows' && !vars.SELF_HOSTED

scripts/inventory-authenticode.ps1

@@ -0,0 +1,48 @@
+[CmdletBinding()]
+param(
+    [Parameter(Mandatory = $true)]
+    [ValidateScript({ Test-Path -LiteralPath $_ -PathType Container })]
+    [string]$ArtifactDirectory
+)
+
+$ErrorActionPreference = "Stop"
+
+function Get-RelativePath {
+    param(
+        [Parameter(Mandatory = $true)]
+        [string]$Root,
+
+        [Parameter(Mandatory = $true)]
+        [string]$Path
+    )
+
+    $rootWithSeparator = $Root.TrimEnd([IO.Path]::DirectorySeparatorChar, [IO.Path]::AltDirectorySeparatorChar) + [IO.Path]::DirectorySeparatorChar
+    $rootUri = [Uri]$rootWithSeparator
+    $pathUri = [Uri]$Path
+
+    [Uri]::UnescapeDataString($rootUri.MakeRelativeUri($pathUri).ToString()).Replace("/", [IO.Path]::DirectorySeparatorChar)
+}
+
+$artifactRoot = (Resolve-Path -LiteralPath $ArtifactDirectory).Path
+$binaries = Get-ChildItem -LiteralPath $artifactRoot -Recurse -File |
+    Where-Object { $_.Extension -in @(".exe", ".dll") } |
+    Sort-Object -Property FullName
+
+if (-not $binaries) {
+    Write-Warning "No .exe or .dll files found under '$artifactRoot'."
+    exit 0
+}
+
+$binaries | ForEach-Object {
+    $signature = Get-AuthenticodeSignature -LiteralPath $_.FullName
+
+    [pscustomobject]@{
+        RelativePath = Get-RelativePath -Root $artifactRoot -Path $_.FullName
+        Status = $signature.Status
+        SignatureType = $signature.SignatureType
+        Signer = if ($signature.SignerCertificate) { $signature.SignerCertificate.Subject } else { "" }
+        SignerThumbprint = if ($signature.SignerCertificate) { $signature.SignerCertificate.Thumbprint } else { "" }
+        Timestamped = [bool]$signature.TimeStamperCertificate
+        TimeStamper = if ($signature.TimeStamperCertificate) { $signature.TimeStamperCertificate.Subject } else { "" }
+    }
+} | Format-Table -AutoSize

scripts/verify-authenticode.ps1

@@ -0,0 +1,73 @@
+[CmdletBinding()]
+param(
+    [Parameter(Mandatory = $true)]
+    [ValidateScript({ Test-Path -LiteralPath $_ -PathType Container })]
+    [string]$ArtifactDirectory,
+
+    [string[]]$Files = @(
+        "orca-slicer.exe",
+        "OrcaSlicer.dll"
+    ),
+
+    [string]$SignToolPath
+)
+
+$ErrorActionPreference = "Stop"
+
+function Resolve-SignToolPath {
+    param(
+        [string]$ExplicitPath
+    )
+
+    if ($ExplicitPath) {
+        if (Test-Path -LiteralPath $ExplicitPath -PathType Leaf) {
+            return (Resolve-Path -LiteralPath $ExplicitPath).Path
+        }
+
+        throw "SignTool was not found at '$ExplicitPath'."
+    }
+
+    $fromPath = Get-Command -Name "signtool.exe" -ErrorAction SilentlyContinue
+    if ($fromPath) {
+        return $fromPath.Source
+    }
+
+    $candidateRoots = @(
+        "${env:ProgramFiles(x86)}\Windows Kits\10\bin",
+        "${env:ProgramFiles}\Windows Kits\10\bin"
+    ) | Where-Object { $_ -and (Test-Path -LiteralPath $_ -PathType Container) }
+
+    foreach ($root in $candidateRoots) {
+        $candidate = Get-ChildItem -LiteralPath $root -Recurse -Filter "signtool.exe" -File -ErrorAction SilentlyContinue |
+            Where-Object { $_.FullName -match "\\(x64|arm64)\\signtool\.exe$" } |
+            Sort-Object -Property FullName -Descending |
+            Select-Object -First 1
+
+        if ($candidate) {
+            return $candidate.FullName
+        }
+    }
+
+    throw "signtool.exe was not found. Install the Windows SDK or pass -SignToolPath."
+}
+
+$artifactRoot = (Resolve-Path -LiteralPath $ArtifactDirectory).Path
+$signtool = Resolve-SignToolPath -ExplicitPath $SignToolPath
+
+Write-Host "Using SignTool: $signtool"
+Write-Host "Verifying Authenticode signatures in: $artifactRoot"
+
+foreach ($relativePath in $Files) {
+    $filePath = Join-Path $artifactRoot $relativePath
+    if (-not (Test-Path -LiteralPath $filePath -PathType Leaf)) {
+        throw "Expected signed file was not found: $filePath"
+    }
+
+    Write-Host "Verifying $relativePath"
+    & $signtool verify /pa /all /tw /v $filePath
+    if ($LASTEXITCODE -ne 0) {
+        throw "SignTool verification failed for '$relativePath' with exit code $LASTEXITCODE."
+    }
+}
+
+Write-Host "Authenticode verification passed."

signpath/README.md

@@ -0,0 +1,16 @@
+# SignPath configurations
+
+This directory contains SignPath artifact configurations used by GitHub Actions.
+
+## `windows-portable-v1`
+
+`windows-portable-v1.xml` is the initial conservative Windows portable-bundle signing configuration. It signs only the two first-party binaries:
+
+- `orca-slicer.exe`
+- `OrcaSlicer.dll`
+
+Do not broaden this to all DLLs without first confirming ownership, provenance, and whether upstream vendor signatures should be verified instead.
+
+The Windows workflow uploads `${{ github.workspace }}/build/OrcaSlicer` with `actions/upload-artifact`. GitHub stores that artifact as a ZIP, and the uploaded directory contents are rooted at the ZIP root. Because of that, the SignPath configuration uses `<zip-file>` with `orca-slicer.exe` and `OrcaSlicer.dll` directly beneath it.
+
+The release portable ZIP is a separate archive created with 7-Zip from `${{ github.workspace }}/build/OrcaSlicer`; that archive keeps the top-level `OrcaSlicer/` folder. After SignPath returns the signed artifact, the workflow copies the signed files back into `build/OrcaSlicer` and recreates the portable release ZIP so the public ZIP layout stays unchanged.

signpath/windows-portable-v1.xml

@@ -0,0 +1,12 @@
+<?xml version="1.0" encoding="utf-8"?>
+<artifact-configuration xmlns="http://signpath.io/artifact-configuration/v1">
+  <zip-file>
+    <pe-file path="orca-slicer.exe">
+      <authenticode-sign />
+    </pe-file>
+
+    <pe-file path="OrcaSlicer.dll">
+      <authenticode-sign />
+    </pe-file>
+  </zip-file>
+</artifact-configuration>