ci_rust.yml

---
name: Rust Bindings

on:
  pull_request:
    branches: [main]
  merge_group:
    types: [checks_requested]
    branches: [main]

env:
  # Pin the nightly toolchain to prevent breakage.
  # This should be occasionally updated.
  RUST_NIGHTLY_TOOLCHAIN: nightly-2024-01-01
  ROOT_PATH: bindings/rust
  EXAMPLE_WORKSPACE: bindings/rust-examples

jobs:
  generate:
    runs-on: ${{ matrix.os }}
    strategy:
      fail-fast: false
      matrix:
        os: [ubuntu-latest, macOS-latest]
    steps:
      - uses: actions/checkout@v3

      - name: Install Rust toolchain
        id: toolchain
        run: |
          rustup toolchain install stable
          rustup override set stable

      # https://github.com/aws/aws-lc-rs/blob/main/aws-lc-fips-sys/README.md#build-prerequisites
      # go required to build aws-lc-rs in FIPS mode
      - name: Install go
        uses: actions/setup-go@v4
        with:
          go-version: '>=1.18'

      - uses: camshaft/rust-cache@v1

      - name: Generate
        run: ${{env.ROOT_PATH}}/generate.sh

      - name: Tests
        working-directory: ${{env.ROOT_PATH}}
        run: cargo test --all-features

      # Ensure that all tests pass with the default feature set
      - name: Default Tests
        working-directory: ${{env.ROOT_PATH}}
        run: cargo test

      - name: Test external build
        # if this test is failing, make sure that api headers are appropriately
        # included. For a symbol to be visible in a shared lib, the
        # __attribute__((visibility("default"))) label must be on a declaration
        # in the same unit of compilation as the definition. Generally this just
        # means that if the linker can't resolve foo_method in tls/foo.c, you
        # forgot to include api/unstable/foo.h in tls/foo.c
        if: ${{ matrix.os == 'ubuntu-latest' }}
        run: |
          cmake . -Bbuild -DBUILD_SHARED_LIBS=on -DBUILD_TESTING=off
          cmake --build build -- -j $(nproc)

          export S2N_TLS_LIB_DIR=`pwd`/build/lib
          export S2N_TLS_INCLUDE_DIR=`pwd`/api
          export LD_LIBRARY_PATH=$S2N_TLS_LIB_DIR:$LD_LIBRARY_PATH

          cd ${{env.ROOT_PATH}}
          ./generate.sh
          ldd target/debug/integration | grep libs2n.so

  # our benchmark testing includes interop tests between s2n-tls, rustls, and
  # openssl
  harness-interop-tests:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Install Rust toolchain
        id: toolchain
        run: |
          rustup toolchain install stable
          rustup override set stable

      - name: generate bindings
        run: ${{env.ROOT_PATH}}/generate.sh --skip-tests

      - name: bench tests
        working-directory: ${{env.ROOT_PATH}}/bench
        run: cargo test

  s2n-tls-binding-examples:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Install Rust toolchain
        id: toolchain
        run: |
          rustup toolchain install stable
          rustup override set stable

      - name: generate bindings
        run: ${{env.ROOT_PATH}}/generate.sh --skip-tests

      - name: build examples
        working-directory: ${{env.EXAMPLE_WORKSPACE}}
        run: cargo build

  generate-openssl-102:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3

      - name: Install Rust toolchain
        id: toolchain
        run: |
          rustup toolchain install stable
          rustup override set stable

      - uses: camshaft/rust-cache@v1

      - name: Cache OpenSSL 1.0.2
        id: cache-openssl
        uses: actions/cache@v3
        with:
          path: ~/openssl-102/install
          key: ${{ runner.os }}-openssl-102

      - if: ${{ steps.cache-openssl.outputs.cache-hit != 'true' }}
        name: Install OpenSSL 1.0.2
        run: |
          mkdir ~/openssl-102
          pushd ~/openssl-102

          mkdir install
          install_dir="$(pwd)"/install

          wget https://www.openssl.org/source/old/1.0.2/openssl-1.0.2u.tar.gz
          tar -xzvf openssl-1.0.2u.tar.gz

          pushd openssl-1.0.2u
          ./config --prefix="${install_dir}" --openssldir="${install_dir}"/openssl
          make
          make install
          popd

          popd

      - name: Generate
        run: OPENSSL_DIR=~/openssl-102/install ${{env.ROOT_PATH}}/generate.sh

      - name: Tests
        working-directory: ${{env.ROOT_PATH}}
        run: cargo test --all-features

  fips:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          submodules: true

      - name: Install Rust toolchain
        id: toolchain
        run: |
          rustup toolchain install stable
          rustup override set stable

      # https://github.com/aws/aws-lc-rs/blob/main/aws-lc-fips-sys/README.md#build-prerequisites
      # go required to build aws-lc-rs in FIPS mode
      - name: Install go
        uses: actions/setup-go@v4
        with:
          go-version: '>=1.18'

      - uses: camshaft/rust-cache@v1

      - name: Generate
        run: ./${{env.ROOT_PATH}}/generate.sh

      - name: Test fips
        working-directory: ${{env.ROOT_PATH}}
        run: |
          cargo test --features fips

  rustfmt:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          submodules: true

      - name: Install Rust toolchain
        id: toolchain
        run: |
          rustup toolchain install ${{ env.RUST_NIGHTLY_TOOLCHAIN }} --profile minimal --component rustfmt
          rustup override set ${{ env.RUST_NIGHTLY_TOOLCHAIN }}

      - uses: camshaft/rust-cache@v1

      # We don't need to format the generated files,
      # but if they don't exist other code breaks.
      - name: Generate
        run: ./${{env.ROOT_PATH}}/generate.sh --skip-tests

      - name: Run cargo fmt
        run: |
          cargo fmt --manifest-path ${{env.ROOT_PATH}}/Cargo.toml --all -- --check

  clippy:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          submodules: true

      - name: Install Rust toolchain
        id: toolchain
        run: |
          rustup toolchain install stable --profile minimal --component clippy
          rustup override set stable

      - uses: camshaft/rust-cache@v1

      # Enforce that clippy's msrv matches rust-toolchain
      - name: Check MSRV
        run: grep $(cat ${{env.ROOT_PATH}}/rust-toolchain) ${{env.ROOT_PATH}}/.clippy.toml

      # We don't need to format the generated files,
      # but if they don't exist other code breaks.
      - name: Generate
        run: ${{env.ROOT_PATH}}/generate.sh

      # TODO translate json reports to in-action warnings
      - name: Run cargo clippy
        run: |
          cargo clippy --manifest-path ${{env.ROOT_PATH}}/Cargo.toml --all-targets -- -D warnings

  msrv:
    runs-on: ubuntu-latest
    steps:
      - uses: actions/checkout@v3
        with:
          submodules: true
      # Enforce crate msrv matches rust-toolchain
      - name: Check MSRV of s2n-tls
        run: grep "rust-version = \"$(cat ${{env.ROOT_PATH}}/rust-toolchain)\"" ${{env.ROOT_PATH}}/s2n-tls/Cargo.toml

      - name: Check MSRV of s2n-tls-sys
        run: grep "rust-version = \"$(cat ${{env.ROOT_PATH}}/rust-toolchain)\"" ${{env.ROOT_PATH}}/s2n-tls-sys/templates/Cargo.template

      - name: Check MSRV of s2n-tokio
        run: grep "rust-version = \"$(cat ${{env.ROOT_PATH}}/rust-toolchain)\"" ${{env.ROOT_PATH}}/s2n-tls-tokio/Cargo.toml