name: Linux musl probe

on:
  push:
    branches:
      - "test/440-musl-release"
    paths:
      - ".github/workflows/musl.yml"
      - "Cargo.lock"
      - "Cargo.toml"
      - "src/**"
  workflow_dispatch:

permissions:
  contents: read

jobs:
  build:
    name: build-${{ matrix.target }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - target: x86_64-unknown-linux-musl
            runner: ubuntu-24.04
          - target: aarch64-unknown-linux-musl
            runner: ubuntu-24.04-arm
    runs-on: ${{ matrix.runner }}
    steps:
      - uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
        with:
          persist-credentials: false

      - name: Build and audit static binary
        env:
          TARGET: ${{ matrix.target }}
        run: |
          docker run --rm \
            --env TARGET \
            --volume "$GITHUB_WORKSPACE:/work" \
            --workdir /work \
            rust:1.98-alpine3.22 \
            sh -euxc '
              apk add --no-cache \
                bison \
                binutils \
                build-base \
                file \
                flex \
                git \
                gnutls-dev \
                libgit2-dev \
                libgit2-static \
                libunistring-dev \
                libunistring-static \
                linux-headers \
                openssl-dev \
                openssl-libs-static \
                perl \
                perl-parse-yapp \
                pkgconf \
                python3 \
                wget \
                xz \
                zlib-dev \
                zlib-static
              rustup target add "$TARGET"
              cargo fetch --locked
              NATIVE_CFLAGS="-O2 -fPIC"
              if [ "$TARGET" = "aarch64-unknown-linux-musl" ]; then
                NATIVE_CFLAGS="$NATIVE_CFLAGS -mno-outline-atomics"
              fi
              export CFLAGS="$NATIVE_CFLAGS"

              mkdir -p /tmp/native
              wget -q https://ftp.gnu.org/gnu/nettle/nettle-3.10.1.tar.gz \
                -O /tmp/native/nettle.tar.gz
              tar -xzf /tmp/native/nettle.tar.gz -C /tmp/native
              cd /tmp/native/nettle-3.10.1
              ./configure \
                --prefix=/tmp/native/nettle \
                --disable-shared \
                --enable-static \
                --disable-documentation \
                --enable-mini-gmp
              make -j$(getconf _NPROCESSORS_ONLN)
              make install

              wget -q https://www.gnupg.org/ftp/gcrypt/gnutls/v3.8/gnutls-3.8.13.tar.xz \
                -O /tmp/native/gnutls.tar.xz
              tar -xf /tmp/native/gnutls.tar.xz -C /tmp/native
              cd /tmp/native/gnutls-3.8.13
              PKG_CONFIG_PATH=/tmp/native/nettle/lib/pkgconfig \
                ./configure \
                  --prefix=/tmp/native/gnutls \
                  --disable-shared \
                  --enable-static \
                  --disable-doc \
                  --disable-tests \
                  --disable-nls \
                  --disable-hardware-acceleration \
                  --with-nettle-mini \
                  --with-included-libtasn1 \
                  --with-included-unistring \
                  --without-idn \
                  --without-p11-kit \
                  --without-brotli \
                  --without-zstd \
                  --without-zlib
              make -j$(getconf _NPROCESSORS_ONLN)
              make install

              mkdir -p /tmp/native/pkgconfig
              sed \
                -e "s#^Libs:.*#Libs: -L/tmp/native/gnutls/lib -lgnutls -latomic -L/tmp/native/nettle/lib -lhogweed -lnettle#" \
                -e "/^Requires.private:/d" \
                -e "s#^Cflags:.*#Cflags: -I/tmp/native/gnutls/include -I/tmp/native/nettle/include#" \
                /tmp/native/gnutls/lib/pkgconfig/gnutls.pc \
                > /tmp/native/pkgconfig/gnutls.pc

              cd /work
              PAVAO_SRC=$(find "${CARGO_HOME:-/usr/local/cargo}/registry/src" \
                -type d -name "pavao-src-4.24.6" -print -quit)
              test -n "$PAVAO_SRC"
              cp -R "$PAVAO_SRC" /tmp/pavao-src
              perl -0pi -e "s#(    \\\"lib/replace/replace\\.c\\\",\\n)#\$1    \\\"lib/replace/closefrom.c\\\",\\n    \\\"lib/replace/strptime.c\\\",\\n#" \
                /tmp/pavao-src/src/lib.rs
              cat >> Cargo.toml <<EOF

          [patch.crates-io]
          pavao-src = { path = "/tmp/pavao-src" }
          EOF
              cargo update -p pavao-src@4.24.6
              export PKG_CONFIG_ALL_STATIC=1
              export PKG_CONFIG_PATH=/tmp/native/pkgconfig:/tmp/native/nettle/lib/pkgconfig:/usr/lib/pkgconfig
              export RUSTFLAGS="-C target-feature=+crt-static -C link-arg=-static"
              cargo build --locked --release --target "$TARGET" \
                --features smb-vendored
              file "target/$TARGET/release/termscp"
              readelf -l "target/$TARGET/release/termscp" | \
                tee /tmp/program-headers.txt
              readelf -d "target/$TARGET/release/termscp" | \
                tee /tmp/dynamic-section.txt
              ! grep -q INTERP /tmp/program-headers.txt
              ! grep -q NEEDED /tmp/dynamic-section.txt
            '

      - name: Upload verified binary
        uses: actions/upload-artifact@043fb46d1a93c77aae656e7c1c64a875d1fc6a0a # v7.0.1
        with:
          name: ${{ matrix.target }}
          path: target/${{ matrix.target }}/release/termscp
          if-no-files-found: error
          retention-days: 7