Add simple test for Maven builder

.github/workflows/e2e.maven.workflow_dispatch.main.default.slsa3.yml

@@ -0,0 +1,106 @@
+on:
+  schedule:
+    - cron: "0 6 * * *"
+  workflow_dispatch:
+    inputs:
+      trigger_build:
+        description: "internal: do not check"
+        required: false
+        default: false
+        type: boolean
+
+permissions: read-all
+
+concurrency: "e2e-maven-workflow_dispatch-main-default-slsa3"
+
+env:
+  # TODO(#263): create dedicated token
+  GH_TOKEN: ${{ secrets.E2E_NODEJS_TOKEN }}
+  ISSUE_REPOSITORY: slsa-framework/slsa-github-generator
+
+jobs:
+  # Bootstrap
+  ################################################################################
+
+  bootstrap:
+    runs-on: ubuntu-latest
+    if: github.event_name == 'schedule' || (github.event_name == 'workflow_dispatch' && !inputs.trigger_build)
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
+      - env:
+          PACKAGE_DIR: ./e2e/maven/workflow_dispatch
+        run: ./.github/workflows/scripts/e2e-maven-push.sh
+
+  if-bootstrap-failed:
+    runs-on: ubuntu-latest
+    needs: [bootstrap]
+    if: always() && (github.event_name == 'schedule' || (github.event_name == 'workflow_dispatch' && !inputs.trigger_build)) && needs.bootstrap.result != 'success'
+    steps:
+      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
+      - run: ./.github/workflows/scripts/e2e-report-failure.sh
+
+  # Main workflow
+  ################################################################################
+  # Shim determines if the rest of the workflow should run.
+  # NOTE: it should only use the `if` to determine this and all downstream jobs
+  #      should depend on this job.
+  shim:
+    # NOTE: this must be kept in sync with the if-failed job.
+    if: github.event_name == 'workflow_dispatch' && inputs.trigger_build
+    runs-on: ubuntu-latest
+    steps:
+      - run: |
+          echo "event: ${GITHUB_EVENT_NAME}"
+          echo "ref: ${GITHUB_REF}"
+
+  build:
+    needs: [shim]
+    permissions:
+      id-token: write # For signing.
+      contents: read # For repo checkout of private repos.
+      actions: read # For getting workflow run on private repos.
+    uses: slsa-framework/slsa-github-generator/.github/workflows/builder_maven_slsa3.yml@main
+    with:
+      directory: ./e2e/maven/workflow_dispatch
+
+  verify:
+    runs-on: ubuntu-latest
+    needs: [build]
+    steps:
+      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
+      - uses: slsa-framework/slsa-github-generator/actions/maven/secure-download-attestations@main
+        with:
+          name: "${{ needs.build.outputs.provenance-download-name }}"
+          sha256: "${{ needs.build.outputs.provenance-download-sha256 }}"
+          path: slsa-attestations
+      - uses: slsa-framework/slsa-github-generator/actions/maven/secure-download-target@main
+        with:
+          name: target
+          sha256: "${{ needs.build.outputs.target-download-sha256 }}"
+          path: ./
+      # NOTE: To build slsa-verifier in e2e.maven.default.verify.sh
+      - uses: actions/setup-go@fac708d6674e30b6ba41289acaab6d4b75aa0753 # v4.0.1
+        with:
+          go-version: "1.18"
+      - env:
+          PROVENANCE_DIR: "slsa-attestations/${{ needs.build.outputs.provenance-download-name }}"
+          EXPECTED_ARTIFACT_OUTPUT: "Hello world!"
+          POMXML: "./e2e/maven/workflow_dispatch/pom.xml"
+        run: ./.github/workflows/scripts/e2e.maven.default.verify.sh
+  if-succeeded:
+    runs-on: ubuntu-latest
+    needs: [build, verify]
+    if: needs.build.result == 'success' && needs.verify.result == 'success'
+    steps:
+      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
+      - run: ./.github/workflows/scripts/e2e-report-success.sh
+
+  if-failed:
+    runs-on: ubuntu-latest
+    needs: [build, verify]
+    if: always() && github.event_name == 'workflow_dispatch' && inputs.trigger_build && (needs.build.result != 'success' || needs.verify.result != 'success')
+    steps:
+      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3.5.3
+      - run: ./.github/workflows/scripts/e2e-report-failure.sh

.github/workflows/scripts/e2e-maven-push.sh

@@ -0,0 +1,128 @@
+#!/usr/bin/env bash
+set -euo pipefail
+
+# shellcheck source=/dev/null
+source "./.github/workflows/scripts/e2e-utils.sh"
+
+# This script bumps the maven package's version number, commits it, and pushes to
+# the repository.
+
+branch=$(e2e_this_branch)
+
+# NOTE: We can't simply push from $branch because it is occaisonally reset to
+# the main branch. We need to maintain the version number in pom.xml
+# because you cannot overwrite a version in maven. Instead we commit to main,
+# set the tag, reset $branch and push both main and $branch.
+echo "GITHUB_REPOSITORY: ${GITHUB_REPOSITORY}"
+gh repo clone "${GITHUB_REPOSITORY}" -- -b main
+repo_name=$(echo "$GITHUB_REPOSITORY" | cut -d '/' -f2)
+cd ./"$repo_name"
+
+git config --global user.name github-actions
+git config --global user.email [email protected]
+
+# Set the remote url to authenticate using the token.
+git remote set-url origin "https://github-actions:${GH_TOKEN}@github.com/${GITHUB_REPOSITORY}.git"
+
+package_dir="${PACKAGE_DIR}" # specified in the e2e test yaml
+
+cd "${package_dir}"
+
+# Get the new version
+artifact_tag=$(mvn help:evaluate -Dexpression=project.version -q -DforceStdout)
+
+# Bumps the version
+new_version() {
+    current_tag=$1
+    release_major=$(version_major "$current_tag")
+    release_minor=$(version_minor "$current_tag")
+    release_patch=$(version_patch "$current_tag")
+
+    # These if-statements are sorted by likelihood
+    if [[ $release_patch != "99" ]]; then
+        # Only need to bump the patch
+        release_patch=$((release_patch+1))
+    elif [[ $release_patch = "99" && $release_minor != "99" ]]; then
+        # Need to bump minor
+        release_minor=$(($release_minor+1))
+        release_patch="0"
+    elif [[ $release_patch = "99" && $release_minor = "99" ]]; then
+        # Need to bump major
+        release_major=$(($release_major+1))
+        release_minor="0"
+        release_patch="0"
+    fi
+    echo $release_major.$release_minor.$release_patch
+}
+
+next_tag=$(new_version "${artifact_tag}")
+
+# Output the artifact name
+echo "artifact-version=${artifact_tag}" >> $GITHUB_OUTPUT
+
+tag=$(mvn versions:set -DnewVersion="${next_tag}")
+cd -
+
+# Commit the new version.
+git commit -m "${GITHUB_WORKFLOW}" "${package_dir}/pom.xml" "${package_dir}/pom.xml"
+
+# If this is an e2e test for a tag, then tag the commit and push it.
+this_event=$(e2e_this_event)
+echo "this_event: ${this_event}"
+if [ "${this_event}" == "tag" ] || [ "${this_event}" == "create" ]; then
+    git tag "${tag}"
+fi
+
+git remote -v
+git branch
+pwd
+if [ "${branch}" != "main" ]; then
+    # Reset branch1 and push the new version.
+    # git branch -D "$branch"
+    git checkout -b "${branch}"
+    if [ "${this_event}" == "tag" ] || [ "${this_event}" == "create" ]; then
+        git push --set-upstream origin "${branch}" "${tag}" -f
+    else
+        git push --set-upstream origin "${branch}" -f
+    fi
+    git checkout main
+
+    # Update a dummy file to avoid https://github.com/slsa-framework/example-package/issues/44
+    date >./e2e/dummy
+    git add ./e2e/dummy
+    git commit -m "sync'ing branch1 - $(cat ./e2e/dummy)"
+    git push origin main
+else
+    if [ "${this_event}" == "tag" ] || [ "${this_event}" == "create" ]; then
+        # TODO(#213): push tag separately until bug is fixed.
+        # NOTE: If there is a concurrent update to main we want it to fail here
+        # without pushing the tag because we will lose the changes to main.
+        git push origin main
+        git push origin "${tag}"
+    else
+        git push origin main
+    fi
+fi
+
+# If this is a test for a release event, create the release.
+if [ "${this_event}" == "release" ]; then
+    this_file=$(e2e_this_file)
+    data_file=$(mktemp)
+    cat <<EOF >"${data_file}"
+**E2E release creation**:
+Tag: ${tag}
+Branch: ${branch}
+Commit: ${GITHUB_SHA}
+Caller file: ${this_file}
+EOF
+
+    gh release create "${tag}" --notes-file "${data_file}" --target "${branch}"
+fi
+
+if [ "${this_event}" == "workflow_dispatch" ]; then
+    this_file=$(e2e_this_file)
+    curl -s -X POST -H "Accept: application/vnd.github.v3+json" \
+        "https://api.github.com/repos/${GITHUB_REPOSITORY}/actions/workflows/${this_file}/dispatches" \
+        -d "{\"ref\":\"${branch}\",\"inputs\":{\"trigger_build\": true}}" \
+        -H "Authorization: token ${GH_TOKEN}"
+fi

.github/workflows/scripts/e2e-utils.sh

@@ -433,7 +433,7 @@ _e2e_verify_query() {
     local expected="$2"
     local query="$3"
     name=$(echo -n "${attestation}" | jq -c -r "${query}")
-    e2e_assert_eq "${name}" "${expected}" "${query} should be ${expected}"
+    e2e_assert_eq "${name}" "${expected}" "${query} should be ${expected} but was ${name}"
 }
 
 # Returns the first 2 asset in a release.

.github/workflows/scripts/e2e.maven.default.verify.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+# shellcheck source=/dev/null
+source "./.github/workflows/scripts/e2e-verify.common.sh"
+
+# Input variables
+EXPECTED_ARTIFACT_OUTPUT=${EXPECTED_ARTIFACT_OUTPUT:-}
+PROVENANCE_DIR=${PROVENANCE_DIR:-}
+GITHUB_REF_NAME=${GITHUB_REF_NAME:-}
+GITHUB_REF=${GITHUB_REF:-}
+RUNNER_DEBUG=${RUNNER_DEBUG:-}
+if [[ -n "${RUNNER_DEBUG}" ]]; then
+    set -x
+fi
+
+artifact_version=$(mvn org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate  -Dexpression=project.version -q -DforceStdout -f "${POMXML}")
+artifact_id=$(mvn org.apache.maven.plugins:maven-help-plugin:3.2.0:evaluate -Dexpression=project.artifactId -q -DforceStdout -f "${POMXML}")
+artifact_name="${artifact_id}-${artifact_version}.jar"
+provenance="${PROVENANCE_DIR}/${artifact_name}.build.slsa"
+
+go env -w GOFLAGS=-mod=mod
+
+verify_provenance_content() {
+    local attestation
+    attestation=$(jq -r '.dsseEnvelope.payload' "${provenance}" | base64 -d)
+
+    # Run the artifact and verify the output is correct
+    artifact_output=$(java -jar target/"${artifact_name}")
+    expected_artifact_output="${EXPECTED_ARTIFACT_OUTPUT}"
+    e2e_assert_eq "${artifact_output}" "${expected_artifact_output}" "The output from the artifact should be '${expected_artifact_output}' but was '${artifact_output}'"
+
+    # Verify the content of the attestation
+    e2e_verify_predicate_subject_name "${attestation}" "${artifact_name}"
+    e2e_verify_predicate_v1_runDetails_builder_id "${attestation}" "https://github.com/slsa-framework/slsa-github-generator/.github/workflows/builder_maven_slsa3.yml@refs/heads/main"
+    e2e_verify_predicate_v1_buildDefinition_buildType "${attestation}" "https://github.com/slsa-framework/slsa-github-generator/delegator-generic@v0"
+}
+
+this_file=$(e2e_this_file)
+branch=$(echo "$this_file" | cut -d '.' -f4)
+echo "branch is $branch"
+echo "GITHUB_REF_NAME: $GITHUB_REF_NAME"
+echo "GITHUB_REF_TYPE: $GITHUB_REF_TYPE"
+echo "GITHUB_REF: $GITHUB_REF"
+echo "DEBUG: file is $this_file"
+echo "PROVENANCE is: ${provenance}"
+
+export SLSA_VERIFIER_TESTING="true"
+
+# Verify provenance content.
+verify_provenance_content
+
+e2e_run_verifier_all_releases "2.3.0"