actions: redistribute wintun.dll

Signed-off-by: Mark Pashmfouroush <mark@markpash.me>

Author: markpash

.github/workflows/go-build.yaml

@@ -70,6 +70,27 @@ jobs:
           go-version: '1.22'
           check-latest: true
 
+      - name: Cache wintun
+        id: cache
+        uses: actions/cache@v3
+        if: matrix.goos == 'windows'
+        env:
+          cache-name: cache-wintun
+        with:
+          path: ~/wintun-0.14.1.zip
+          key: wintun-0.14.1.zip
+
+      - name: Download wintun
+        if: matrix.goos == 'windows' && steps.cache.outputs.cache-hit != 'true'
+        run: |
+          curl -LO https://www.wintun.net/builds/wintun-0.14.1.zip --output-dir ~/
+
+      - name: Validate wintun
+        if: matrix.goos == 'windows'
+        run: |
+          echo "07c256185d6ee3652e09fa55c0b673e2624b565e02c4b9091c79ca7d2f24ef51 ~/wintun-0.14.1.zip" | sha256sum --check --status
+          unzip ~/wintun-0.14.1.zip -d ~/wintun
+
       - name: Build warp-plus
         run: |
           go build -v -o warp-plus_${{ env.ASSET_NAME }}/ -trimpath -ldflags "-s -w -buildid= -X main.version=${{ github.ref }}" ./cmd/warp-plus
@@ -80,6 +101,17 @@ jobs:
           cp ${GITHUB_WORKSPACE}/README.md ./warp-plus_${{ env.ASSET_NAME }}/README.md
           cp ${GITHUB_WORKSPACE}/LICENSE ./warp-plus_${{ env.ASSET_NAME }}/LICENSE
 
+      - name: Redistribute wintun.dll
+        if: matrix.goos == 'windows'
+        run: |
+          if [ "$GOARCH" = "amd64" ]; then
+            mv ~/wintun/wintun/bin/amd64/wintun.dll ./warp-plus_${{ env.ASSET_NAME }}/
+          elif [ "$GOARCH" = "arm64" ]; then
+            mv ~/wintun/wintun/bin/arm64/wintun.dll ./warp-plus_${{ env.ASSET_NAME }}/
+          elif [ "$GOARCH" = "386" ]; then
+            mv ~/wintun/wintun/bin/x86/wintun.dll ./warp-plus_${{ env.ASSET_NAME }}/
+          fi
+
       - name: Create ZIP archive
         shell: bash
         run: |