chore: adds tests, clippy, formatting, and auditing to CI

changes the following to appease the new CI rules:
  * ignores unused dep warning for openssl-sys.
  * runs cargo +nightly fmt on source.
  * fixes clippy issues.
  * removes modules from V1 that weren't being used. These modules were behind v1
    feature flags that had been removed as well.
  * adds deny.toml from c2pa-rs.

.github/workflows/build.yml

@@ -15,8 +15,185 @@ on:
         default: 'false'
 
 jobs:
+  tests:
+    name: Unit tests
+
+    if: |
+      github.event_name != 'pull_request' ||
+      github.event.pull_request.author_association == 'COLLABORATOR' ||
+      github.event.pull_request.author_association == 'MEMBER' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      contains(github.event.pull_request.labels.*.name, 'safe to test')
+
+    runs-on: ${{ matrix.os }}
+
+    strategy:
+      fail-fast: false
+      matrix:
+        os: [ windows-latest, macos-latest, ubuntu-latest ]
+        rust_version: [ stable, 1.76.0 ]
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@master
+        with:
+          toolchain: ${{ matrix.rust_version }}
+          components: llvm-tools-preview
+
+      - name: Cache Rust dependencies
+        uses: Swatinem/rust-cache@v2
+
+  clippy_check:
+    name: Clippy
+
+    if: |
+      github.event_name != 'pull_request' ||
+      github.event.pull_request.author_association == 'COLLABORATOR' ||
+      github.event.pull_request.author_association == 'MEMBER' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      contains(github.event.pull_request.labels.*.name, 'safe to test')
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install Rust toolchain
+        uses: dtolnay/rust-toolchain@stable
+        with:
+          components: clippy
+
+      - name: Cache Rust dependencies
+        uses: Swatinem/rust-cache@v2
+
+      - name: Run Clippy
+        run: cargo clippy --all-features --all-targets -- -Dwarnings
+
+  cargo_fmt:
+    name: Enforce Rust code format
+
+    if: |
+      github.event_name != 'pull_request' ||
+      github.event.pull_request.author_association == 'COLLABORATOR' ||
+      github.event.pull_request.author_association == 'MEMBER' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      contains(github.event.pull_request.labels.*.name, 'safe to test')
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install nightly toolchain
+        uses: dtolnay/rust-toolchain@nightly
+        with:
+          components: rustfmt
+
+      - name: Check format
+        run: cargo +nightly fmt --all -- --check
+
+  docs_rs:
+    name: Preflight docs.rs build
+
+    if: |
+      github.event_name != 'pull_request' ||
+      github.event.pull_request.author_association == 'COLLABORATOR' ||
+      github.event.pull_request.author_association == 'MEMBER' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      contains(github.event.pull_request.labels.*.name, 'safe to test')
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install nightly Rust toolchain
+        # Nightly is used here because the docs.rs build
+        # uses nightly and we use doc_cfg features that are
+        # not in stable Rust as of this writing (Rust 1.76).
+        uses: dtolnay/rust-toolchain@nightly
+
+      - name: Run cargo docs
+        # This is intended to mimic the docs.rs build
+        # environment. The goal is to fail PR validation
+        # if the subsequent release would result in a failed
+        # documentation build on docs.rs.
+        run: cargo +nightly doc --workspace --all-features --no-deps
+        env:
+          RUSTDOCFLAGS: --cfg docsrs
+          DOCS_RS: 1
+  cargo-deny:
+    name: License / vulnerability audit
+
+    if: |
+      github.event_name != 'pull_request' ||
+      github.event.pull_request.author_association == 'COLLABORATOR' ||
+      github.event.pull_request.author_association == 'MEMBER' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      contains(github.event.pull_request.labels.*.name, 'safe to test')
+
+    runs-on: ubuntu-latest
+
+    strategy:
+      fail-fast: false
+      matrix:
+        checks:
+          - advisories
+          - bans licenses sources
+
+    # Prevent sudden announcement of a new advisory from failing CI:
+    continue-on-error: ${{ matrix.checks == 'advisories' }}
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Audit crate dependencies
+        uses: EmbarkStudios/cargo-deny-action@v2
+        with:
+          command: check ${{ matrix.checks }}
+
+  unused_deps:
+    name: Check for unused dependencies
+
+    if: |
+      github.event_name != 'pull_request' ||
+      github.event.pull_request.author_association == 'COLLABORATOR' ||
+      github.event.pull_request.author_association == 'MEMBER' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      contains(github.event.pull_request.labels.*.name, 'safe to test')
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Install nightly Rust toolchain
+        uses: dtolnay/rust-toolchain@nightly
+
+      - name: Run cargo-udeps
+        uses: aig787/cargo-udeps-action@v1
+        with:
+          version: latest
+          args: --all-targets --all-features
+
   linux:
     runs-on: ubuntu-latest
+
+    if: |
+      github.event_name != 'pull_request' ||
+      github.event.pull_request.author_association == 'COLLABORATOR' ||
+      github.event.pull_request.author_association == 'MEMBER' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      contains(github.event.pull_request.labels.*.name, 'safe to test')
+
     strategy:
       matrix:
         target: [x86_64, aarch64]
@@ -63,6 +240,14 @@ jobs:
 
   windows:
     runs-on: windows-latest
+
+    if: |
+      github.event_name != 'pull_request' ||
+      github.event.pull_request.author_association == 'COLLABORATOR' ||
+      github.event.pull_request.author_association == 'MEMBER' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      contains(github.event.pull_request.labels.*.name, 'safe to test')
+
     strategy:
       matrix:
         target: [x64, x86]
@@ -88,6 +273,14 @@ jobs:
 
   macos_x86:
     runs-on: macos-latest
+
+    if: |
+      github.event_name != 'pull_request' ||
+      github.event.pull_request.author_association == 'COLLABORATOR' ||
+      github.event.pull_request.author_association == 'MEMBER' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      contains(github.event.pull_request.labels.*.name, 'safe to test')
+
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -109,6 +302,14 @@ jobs:
 
   macos_aarch64:
     runs-on: macos-latest-large
+
+    if: |
+      github.event_name != 'pull_request' ||
+      github.event.pull_request.author_association == 'COLLABORATOR' ||
+      github.event.pull_request.author_association == 'MEMBER' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      contains(github.event.pull_request.labels.*.name, 'safe to test')
+
     steps:
       - uses: actions/checkout@v4
       - uses: actions/setup-python@v5
@@ -130,6 +331,14 @@ jobs:
 
   sdist:
     runs-on: ubuntu-latest
+
+    if: |
+      github.event_name != 'pull_request' ||
+      github.event.pull_request.author_association == 'COLLABORATOR' ||
+      github.event.pull_request.author_association == 'MEMBER' ||
+      github.event.pull_request.user.login == 'dependabot[bot]' ||
+      contains(github.event.pull_request.labels.*.name, 'safe to test')
+
     steps:
       - uses: actions/checkout@v4
       - name: Build sdist
@@ -145,9 +354,11 @@ jobs:
 
   release:
     name: Release
+
+    if: startsWith(github.ref, 'refs/tags/') || github.event_name == 'workflow_dispatch' && github.event.inputs.publish == 'true'
+
     runs-on: ubuntu-latest
     environment: Publish
-    if: startsWith(github.ref, 'refs/tags/') || github.event_name == 'workflow_dispatch' && github.event.inputs.publish == 'true'
     needs: [linux, windows, macos_x86, macos_aarch64, sdist]
     steps:
       - uses: actions/download-artifact@v3

Cargo.toml

@@ -9,6 +9,8 @@ authors = ["Gavin Peacock <[email protected]"]
 name = "c2pa"
 crate-type = ["cdylib"]
 
+[package.metadata.cargo-udeps.ignore]
+normal = ["openssl-src"]
 
 [dependencies]
 c2pa = {version = "0.35.0", features = ["unstable_api", "file_io", "openssl", "pdf", "fetch_remote_manifests"]}
@@ -20,7 +22,6 @@ thiserror = "1.0.49"
 uniffi = "0.24.1"
 openssl-src = "=300.3.1" # Required for openssl-sys
 log = "0.4.21"
-env_logger = "0.11.3"
 
 [build-dependencies]
 uniffi = { version = "0.24.1", features = ["build"] }

deny.toml

@@ -0,0 +1,52 @@
+# Configuration used for dependency checking with cargo-deny.
+#
+# For further details on all configuration options see:
+# https://embarkstudios.github.io/cargo-deny/checks/cfg.html
+
+[graph]
+targets = [
+    { triple = "x86_64-unknown-linux-gnu" },
+    { triple = "x86_64-apple-darwin" },
+    { triple = "x86_64-pc-windows-msvc" },
+    { triple = "aarch64-apple-darwin" },
+    { triple = "wasm32-unknown-unknown" },
+]
+
+[advisories]
+yanked = "deny"
+
+ignore = [
+    "RUSTSEC-2021-0127", # serde_cbor
+    "RUSTSEC-2023-0071", # rsa Marvin Attack: (https://jira.corp.adobe.com/browse/CAI-5104)
+]
+
+[bans]
+multiple-versions = "allow"
+
+[licenses]
+allow = [
+    "Apache-2.0",
+    "BSD-2-Clause",
+    "BSD-3-Clause",
+    "CC0-1.0",
+    "ISC",
+    "LicenseRef-ring",
+    "MIT",
+    "MPL-2.0",
+    "Unicode-DFS-2016",
+    "Zlib",
+]
+confidence-threshold = 0.9
+
+[[licenses.clarify]]
+name = "ring"
+expression = "LicenseRef-ring"
+license-files = [
+    { path = "LICENSE", hash = 3171872035 }
+]
+
+[sources]
+unknown-registry = "deny"
+unknown-git = "deny"
+allow-registry = ["https://github.com/rust-lang/crates.io-index"]
+allow-git = []