mirror of
https://github.com/rcourtman/Pulse.git
synced 2026-09-10 02:25:56 +00:00
pulse-triage[bot]
115 lines
4.1 KiB
Bash
Executable File
115 lines
4.1 KiB
Bash
Executable File
#!/usr/bin/env bash
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# Verify GitHub's post-publication integrity boundary for a Pulse release.
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# Immutable GitHub releases protect the tag and asset set and receive a signed
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# release attestation. Both properties are required: an attestation check alone
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# must not bless a release whose assets can still be replaced afterward.
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set -euo pipefail
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if [ "$#" -lt 2 ] || [ "$#" -gt 4 ]; then
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echo "Usage: $0 <tag> <owner/repo> [expected-release-id] [expected-source-sha]" >&2
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exit 1
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fi
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TAG="$1"
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REPO="$2"
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EXPECTED_RELEASE_ID="${3:-}"
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EXPECTED_SOURCE_SHA="${4:-}"
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ATTESTATION_ATTEMPTS="${PULSE_RELEASE_ATTESTATION_ATTEMPTS:-12}"
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ATTESTATION_RETRY_DELAY="${PULSE_RELEASE_ATTESTATION_RETRY_DELAY:-5}"
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if [[ ! "$TAG" =~ ^v[0-9]+\.[0-9]+\.[0-9]+(-(rc|alpha|beta)\.[0-9]+)?$ ]]; then
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echo "Invalid release tag: ${TAG}" >&2
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exit 1
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fi
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if [[ ! "$REPO" =~ ^[A-Za-z0-9_.-]+/[A-Za-z0-9_.-]+$ ]]; then
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echo "Invalid GitHub repository: ${REPO}" >&2
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exit 1
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fi
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if [ -n "$EXPECTED_RELEASE_ID" ] && [[ ! "$EXPECTED_RELEASE_ID" =~ ^[0-9]+$ ]]; then
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echo "Invalid expected release id: ${EXPECTED_RELEASE_ID}" >&2
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exit 1
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fi
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if [ -n "$EXPECTED_SOURCE_SHA" ] && [[ ! "$EXPECTED_SOURCE_SHA" =~ ^[0-9a-f]{40}$ ]]; then
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echo "Invalid expected source SHA: ${EXPECTED_SOURCE_SHA}" >&2
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exit 1
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fi
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if [[ ! "$ATTESTATION_ATTEMPTS" =~ ^[1-9][0-9]*$ ]]; then
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echo "PULSE_RELEASE_ATTESTATION_ATTEMPTS must be a positive integer." >&2
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exit 1
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fi
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if [[ ! "$ATTESTATION_RETRY_DELAY" =~ ^[0-9]+$ ]]; then
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echo "PULSE_RELEASE_ATTESTATION_RETRY_DELAY must be a non-negative integer." >&2
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exit 1
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fi
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for command in gh jq; do
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if ! command -v "$command" >/dev/null 2>&1; then
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echo "${command} is required to verify GitHub release integrity." >&2
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exit 1
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fi
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done
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release_json="$(mktemp)"
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attestation_json="$(mktemp)"
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cleanup() { rm -f "$release_json" "$attestation_json"; }
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trap cleanup EXIT
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gh api \
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-H 'Accept: application/vnd.github+json' \
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-H 'X-GitHub-Api-Version: 2026-03-10' \
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"repos/${REPO}/releases/tags/${TAG}" > "$release_json"
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if ! jq -e \
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--arg tag "$TAG" \
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--arg expected_release_id "$EXPECTED_RELEASE_ID" \
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--arg expected_source_sha "$EXPECTED_SOURCE_SHA" \
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'.tag_name == $tag and
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.draft == false and
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(.published_at | type == "string" and length > 0) and
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.immutable == true and
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($expected_release_id == "" or (.id | tostring) == $expected_release_id) and
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($expected_source_sha == "" or .target_commitish == $expected_source_sha) and
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([.assets[]? | select(
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.name == "release-activation.json" and
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.state == "uploaded" and
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(.size | type == "number" and . > 0) and
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(.digest | type == "string" and test("^sha256:[0-9a-f]{64}$"))
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)] | length == 1)' \
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"$release_json" >/dev/null; then
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jq -c \
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'{id, tag_name, target_commitish, draft, prerelease, immutable, published_at,
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activation_assets: [.assets[]? | select(.name == "release-activation.json") |
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{name, state, size, digest}]}' \
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"$release_json" >&2
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echo "Release ${TAG} is not an immutable published packet with one digest-bound activation marker." >&2
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exit 1
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fi
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verified=false
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for attempt in $(seq 1 "$ATTESTATION_ATTEMPTS"); do
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if gh release verify "$TAG" --repo "$REPO" --format json > "$attestation_json"; then
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verified=true
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break
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fi
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if [ "$attempt" -lt "$ATTESTATION_ATTEMPTS" ]; then
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echo "Release attestation for ${TAG} is not verifiable yet (${attempt}/${ATTESTATION_ATTEMPTS}); retrying." >&2
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sleep "$ATTESTATION_RETRY_DELAY"
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fi
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done
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if [ "$verified" != true ]; then
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echo "GitHub release attestation verification failed for ${TAG}." >&2
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exit 1
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fi
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if ! jq -e 'type == "object" or type == "array"' "$attestation_json" >/dev/null; then
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echo "GitHub release attestation verification returned malformed JSON for ${TAG}." >&2
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exit 1
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fi
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release_id="$(jq -r '.id' "$release_json")"
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source_sha="$(jq -r '.target_commitish' "$release_json")"
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asset_count="$(jq -r '.assets | length' "$release_json")"
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echo "[OK] GitHub release ${TAG} is immutable and attested: release_id=${release_id} source_sha=${source_sha} assets=${asset_count}."
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