619ccb20f0
Flags direct pushes to main that did not come from a merged PR. Free-plan workaround since branch protection requires GitHub Pro.
63 lines
2.5 KiB
YAML
63 lines
2.5 KiB
YAML
name: Audit — Direct push to main
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# Tripwire: fires on every push to main and flags pushes that did not come
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# from a merged PR. We run GitHub on the free plan, which means we can't use
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# branch protection on private repos. This is the soft-enforcement layer.
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#
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# Behavior:
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# - If the pushed commit is associated with a merged PR, exit quietly.
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# - If not, open a GitHub issue tagging the pusher so it's visible.
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#
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# This never blocks the push. It's an audit, not a gate.
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on:
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push:
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branches: [main]
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permissions:
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contents: read
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issues: write
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pull-requests: read
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jobs:
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audit:
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name: Check commit came from PR
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runs-on: ubuntu-latest
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steps:
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- name: Check for associated PR
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uses: actions/github-script@v7
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with:
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script: |
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const sha = context.sha;
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const { data: prs } = await github.rest.repos.listPullRequestsAssociatedWithCommit({
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owner: context.repo.owner,
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repo: context.repo.repo,
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commit_sha: sha,
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});
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const merged = prs.find(p => p.merged_at);
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if (merged) {
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core.info(`OK: commit ${sha.substring(0,7)} came from PR #${merged.number}`);
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return;
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}
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const pusher = context.payload.pusher?.name || context.actor;
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const msg = context.payload.head_commit?.message?.split('\n')[0] || '(no message)';
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const body = [
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`**Direct push to \`main\` detected** — commit was not associated with a merged PR.`,
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``,
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`- Commit: \`${sha.substring(0,7)}\` — ${msg}`,
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`- Pusher: @${pusher}`,
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`- Workflow run: ${context.serverUrl}/${context.repo.owner}/${context.repo.repo}/actions/runs/${context.runId}`,
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``,
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`The project policy is that all changes to \`main\` go through a pull request so they can be reviewed before deploying to production. If this push was intentional (hotfix, infra change) close this issue with a comment explaining why.`,
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``,
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`_This issue was opened automatically by \`.github/workflows/main-push-audit.yml\`._`,
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].join('\n');
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await github.rest.issues.create({
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owner: context.repo.owner,
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repo: context.repo.repo,
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title: `Direct push to main: ${sha.substring(0,7)}`,
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body,
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labels: ['policy-violation', 'audit'],
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});
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core.warning(`Opened audit issue for direct push ${sha.substring(0,7)}`);
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