openclaw/scripts/github/guard-review.mjs
Josh Avant 35263bd17a
fix(ci): stop obsolete security reviews after PR lifecycle changes (#160890)
* fix(ci): stop obsolete security reviews after PR lifecycle changes

* fix(ci): preserve security review evidence after merges
2026-09-28 21:34:29 -05:00

521 lines
19 KiB
JavaScript

import { readFile } from "node:fs/promises";
import {
GitHubDiffDataError,
GitHubRateLimitError,
SECURITY_REVIEW_CHECK_INTERVAL_MS,
createGitHubApi,
parseApprovalCommands,
publishGuardStatus,
} from "./guard-shared.mjs";
import { securityReviewRollout } from "./security-review-rollout.mjs";
const requestMarker = "<!-- openclaw:approval-request ";
export const securityReviewContracts = {
dependency: {
context: "openclaw/dependency-review",
commentMarker: "<!-- openclaw:dependency-graph-guard -->",
approvalCommand: "/allow-dependencies-change",
success: {
clear: { description: "No dependency changes require review.", requiresApproval: false },
removals: { description: "Dependency removals are informational.", requiresApproval: false },
approved: {
description: "Dependency review requirements satisfied.",
requiresApproval: true,
},
},
},
sensitive: {
context: "openclaw/security-sensitive-review",
commentMarker: "<!-- openclaw:security-sensitive-guard -->",
approvalCommand: "/allow-security-sensitive-change",
success: {
clear: { description: "No sensitive product changes", requiresApproval: false },
approved: {
description: "Sensitive changes have maintainer authority",
requiresApproval: true,
},
},
},
combined: {
context: "openclaw/ci-gate",
success: "CI and applicable security review requirements passed",
failure: "CI must complete successfully; review updates automatically",
waiting: "Waiting for CI; review updates automatically",
},
};
// The caller authenticates the publisher's protected source and successful
// enforcement step. These statuses are its decisions, not fresh approval authority.
export async function revalidatePublishedSecurityClearance(review, statuses, publisher) {
const requireClearance = (condition, message) => {
if (!condition) {
throw new Error(`Published security clearance: ${message}`);
}
};
const started = Date.parse(publisher.startedAt);
const completed = Date.parse(publisher.completedAt);
requireClearance(
typeof publisher.url === "string" &&
publisher.url.length > 0 &&
Number.isFinite(started) &&
Number.isFinite(completed) &&
started <= completed,
"invalid publisher execution window",
);
requireClearance(
Array.isArray(statuses) && review.pullRequest.state === "open" && !review.pullRequest.draft,
"complete current statuses and an open, ready pull request are required",
);
const prefix = `PR #${review.pullRequest.number}: `;
const latest = (context) => {
const matches = statuses.filter((status) => status.context?.toLowerCase() === context);
requireClearance(matches.length <= 1, `ambiguous latest status for ${context}`);
return matches[0];
};
const inspect = (status, context, state) => {
const created = Date.parse(status?.created_at);
const updated = Date.parse(status?.updated_at);
requireClearance(
Number.isSafeInteger(status?.id) &&
status.id > 0 &&
status.context === context &&
status.state === state &&
status.creator?.login === "github-actions[bot]" &&
status.creator.type === "Bot" &&
status.target_url === publisher.url &&
typeof status.description === "string" &&
status.description.startsWith(prefix) &&
Number.isFinite(created) &&
Number.isFinite(updated) &&
started <= created &&
created <= updated &&
updated <= completed,
`untrusted, stale, or unsuccessful ${context} status`,
);
return status.description.slice(prefix.length);
};
const combined = latest(securityReviewContracts.combined.context);
const projection = new Map([
["failure", securityReviewContracts.combined.failure],
["success", securityReviewContracts.combined.success],
["pending", securityReviewContracts.combined.waiting],
]).get(combined?.state);
requireClearance(
projection &&
inspect(combined, securityReviewContracts.combined.context, combined.state) === projection,
"combined status is not solely the CI projection",
);
await assertGuardUnchanged(review);
const rollout = await securityReviewRollout(review);
const guardStatusIds = [];
const approvals = [];
for (const contract of [securityReviewContracts.dependency, securityReviewContracts.sensitive]) {
const status = latest(contract.context);
if (rollout.mode !== "enforced" && !status) {
continue;
}
if (
rollout.mode !== "enforced" &&
Date.parse(status.created_at) < started &&
Date.parse(status.updated_at) < started
) {
continue;
}
const description = inspect(status, contract.context, "success");
const decision = Object.values(contract.success).find(
(value) => value.description === description,
);
requireClearance(
decision && Date.parse(status.updated_at) <= Date.parse(combined.created_at),
`unknown or out-of-order ${contract.context} clearance`,
);
guardStatusIds.push(status.id);
if (decision.requiresApproval) {
const approval = await findMaintainerApproval({ ...review, ...contract });
requireClearance(approval, `${contract.context} approval is no longer current`);
approvals.push({ context: contract.context, ...approval });
}
}
const currentRollout = await securityReviewRollout(review);
requireClearance(currentRollout.mode === rollout.mode, "rollout changed during admission");
await assertGuardUnchanged(review);
return { rollout, combinedStatusId: combined.id, guardStatusIds, approvals };
}
export class ObsoleteReviewError extends Error {
constructor(
message = "Superseded by a newer PR head; skipping this evaluation. Its automatic event will evaluate it.",
) {
super(message);
}
}
function isSupersededHead(expected, current) {
const validHead = (sha) => typeof sha === "string" && /^[a-f0-9]{40}$/u.test(sha);
return validHead(expected) && validHead(current) && expected !== current;
}
function pullRequestNumber(event) {
if (event.pull_request) {
return event.pull_request.number;
}
if (event.issue?.pull_request && event.comment) {
return event.issue.number;
}
return null;
}
/** @returns {Record<string, unknown>} */
function snapshot(pr) {
// Approval binds to the PR head and target branch. Unrelated pushes to the
// target move base.sha without a PR event, so they must not strand this check.
return {
number: pr.number,
state: pr.state,
created_at: pr.created_at,
draft: pr.draft,
"user.id": pr.user?.id,
"user.login": pr.user?.login,
"user.type": pr.user?.type,
"base.repo.id": pr.base?.repo?.id,
"base.ref": pr.base?.ref,
"head.repo.id": pr.head?.repo?.id,
"head.ref": pr.head?.ref,
"head.sha": pr.head?.sha,
maintainer_can_modify: pr.maintainer_can_modify,
changed_files: pr.changed_files,
};
}
function assertPullRequestUnchanged(
pullRequest,
current,
{ allowFileCountChange = false, allowMerged = false } = {},
) {
if (
current.number === pullRequest.number &&
isSupersededHead(pullRequest.head?.sha, current.head?.sha)
) {
throw new ObsoleteReviewError();
}
const expected = {
...pullRequest,
...(allowFileCountChange ? { changed_files: current.changed_files } : {}),
// A force-merge must not discard the running review's operational evidence.
// Only execution reviews opt in; merge admission and cleanup stay strict.
...(allowMerged &&
pullRequest.state === "open" &&
current.state === "closed" &&
current.merged === true
? { state: "closed" }
: {}),
};
const currentSnapshot = snapshot(current);
const changedFields = Object.entries(snapshot(expected))
// Keep the original array serialization's null/undefined equivalence.
.filter(
([field, value]) => JSON.stringify([value]) !== JSON.stringify([currentSnapshot[field]]),
)
.map(([field]) => field);
// Eligibility can change while reads or recovery are in flight. Abandon that
// snapshot without turning unrelated identity or permission changes into skips.
const lifecycleFields = new Set(["state", "draft", "base.ref"]);
if (
changedFields.some((field) => lifecycleFields.has(field)) &&
changedFields.every((field) => lifecycleFields.has(field) || field === "changed_files") &&
["open", "closed"].includes(current.state) &&
typeof current.draft === "boolean" &&
typeof current.base?.ref === "string" &&
current.base.ref.length > 0
) {
throw new ObsoleteReviewError(
`The pull request's review eligibility changed (changed fields: ${changedFields.join(", ")}); skipping this obsolete evaluation.`,
);
}
if (changedFields.length === 1 && changedFields[0] === "changed_files") {
throw new GitHubDiffDataError("The changed-file count changed during security review.");
}
if (changedFields.length > 0) {
throw new Error(
`The pull request changed during security review (changed fields: ${changedFields.join(", ")}); the next automatic event will evaluate it.`,
);
}
return current;
}
export async function assertGuardUnchanged(guard, options) {
const current = await guard.api.request(guard.pullPath);
return assertPullRequestUnchanged(guard.pullRequest, current, {
allowMerged: guard.allowMerged === true,
...options,
});
}
async function readGuardFileSnapshot(review) {
const files = await review.api.paginate(`${review.pullPath}/files`);
const current = await assertGuardUnchanged(review, { allowFileCountChange: true });
const expected = review.pullRequest.changed_files;
if (files.length !== expected || current.changed_files !== expected) {
throw new GitHubDiffDataError(
`GitHub did not return a consistent, complete changed-file list (expected ${expected}, received ${files.length}, current count ${current.changed_files}).`,
);
}
// Main can advance (including a merge) without changing this review's inputs.
return {
pullRequest: { ...current, base: { ...current.base, sha: review.pullRequest.base.sha } },
files,
};
}
export async function readGuardReview(previousReview) {
const { GITHUB_TOKEN, GITHUB_EVENT_PATH, GITHUB_REPOSITORY, GITHUB_RUN_ID } = process.env;
if (!GITHUB_TOKEN || !GITHUB_EVENT_PATH || !GITHUB_REPOSITORY) {
throw new Error("GITHUB_TOKEN, GITHUB_EVENT_PATH, and GITHUB_REPOSITORY are required.");
}
const event = JSON.parse(await readFile(GITHUB_EVENT_PATH, "utf8"));
const defaultBranch = event.repository?.default_branch;
if (typeof defaultBranch !== "string" || defaultBranch.length === 0) {
throw new Error("Security review event has no default branch.");
}
// Only the trusted workflow resolver supplies this value, including CI completion events.
const selected = process.env.OPENCLAW_SECURITY_REVIEW_PR_NUMBER;
const number =
selected === undefined
? pullRequestNumber(event)
: /^[1-9][0-9]*$/u.test(selected)
? Number(selected)
: null;
if (!Number.isSafeInteger(number) || number <= 0) {
throw new Error("No valid pull request in the guard event.");
}
const [owner, repo] = GITHUB_REPOSITORY.split("/");
const pullPath = `/repos/${owner}/${repo}/pulls/${number}`;
let review = null;
let checkedAt = Date.now();
const api = createGitHubApi(GITHUB_TOKEN, {
userAgent: "openclaw-security-review",
beforeRead: async (path) => {
if (
!review ||
path === pullPath ||
Date.now() - checkedAt < SECURITY_REVIEW_CHECK_INTERVAL_MS
) {
return;
}
// Cooperatively stop between reads, including pagination. Never interrupt
// a write or autoscrub cleanup, or replace the final authority checks.
await assertGuardUnchanged(review, { allowFileCountChange: true });
checkedAt = Date.now();
},
});
const pullRequest = await api.request(pullPath);
if (previousReview) {
// Diff counts may settle and merged reviews may finish across recovery.
// Other PR changes still invalidate the original evaluation.
assertPullRequestUnchanged(previousReview.pullRequest, pullRequest, {
allowFileCountChange: true,
allowMerged: previousReview.allowMerged === true,
});
}
const expectedHead = process.env.OPENCLAW_SECURITY_REVIEW_HEAD_SHA;
if (expectedHead !== undefined && expectedHead !== pullRequest.head?.sha) {
if (pullRequest.number === number && isSupersededHead(expectedHead, pullRequest.head?.sha)) {
throw new ObsoleteReviewError();
}
throw new Error(
"The PR head changed after scheduling; its next automatic event will evaluate it.",
);
}
// A PR can leave the resolver's scope without changing its head while a job
// queues or between detect, autoscrub, and enforcement steps.
if (
!["open", "closed"].includes(pullRequest.state) ||
typeof pullRequest.draft !== "boolean" ||
typeof pullRequest.base?.ref !== "string" ||
pullRequest.base.ref.length === 0
) {
throw new Error("Invalid pull request review eligibility.");
}
if (
(pullRequest.state === "closed" &&
!(pullRequest.merged === true && expectedHead === pullRequest.head.sha)) ||
pullRequest.draft ||
pullRequest.base.ref !== defaultBranch
) {
console.log("The pull request is outside security review scope; skipping this evaluation.");
return null;
}
if (pullRequest.state === "closed") {
console.log(
"The pull request has merged; completing security review evidence for the scheduled head.",
);
}
review = {
api,
owner,
repo,
event,
pullRequest: previousReview
? { ...pullRequest, base: { ...pullRequest.base, sha: previousReview.pullRequest.base.sha } }
: pullRequest,
allowMerged: true,
pullPath,
issuePath: `/repos/${owner}/${repo}/issues/${number}`,
runUrl: `https://github.com/${owner}/${repo}/actions/runs/${GITHUB_RUN_ID}`,
};
return review;
}
export async function openGuard({ context, commentMarker, approvalCommand }, prepared) {
const review = prepared ?? (await readGuardReview());
if (!review) {
return null;
}
const guard = { ...review, context, commentMarker, approvalCommand };
let rollout;
try {
rollout = review.rollout ?? (await securityReviewRollout(review));
} catch (error) {
if (error instanceof GitHubRateLimitError || error instanceof ObsoleteReviewError) {
throw error;
}
await publishGuardStatus(
guard,
"failure",
"Security review policy could not be evaluated",
).catch(
/** @param {unknown} publicationError */ (publicationError) => {
console.error(
publicationError instanceof Error ? publicationError.message : String(publicationError),
);
},
);
throw error;
}
if (rollout.mode !== "enforced") {
console.log(`Security review: ${rollout.mode}.`);
return null;
}
// Invalidate previous approval before any fallible file or authority reads.
await publishGuardStatus(guard, "failure", "Security review has not completed");
if (review.fileSnapshot) {
await assertGuardUnchanged(review);
} else {
// Both guards must evaluate the same complete file list for this attempt.
review.fileSnapshot = readGuardFileSnapshot(review);
}
const { pullRequest, files } = await review.fileSnapshot;
review.pullRequest = pullRequest;
guard.pullRequest = pullRequest;
guard.files = files;
review.guards?.push(guard);
return guard;
}
async function maintainerRole(guard, user) {
if (user?.type !== "User" || !user.login) {
return null;
}
let permission;
try {
permission = await guard.api.request(
`/repos/${guard.owner}/${guard.repo}/collaborators/${encodeURIComponent(user.login)}/permission`,
);
} catch (error) {
if (error?.status === 404) {
return null;
}
throw error;
}
return permission.role_name === "maintain" || permission.role_name === "admin"
? permission.role_name
: null;
}
function approvalRequest(guard, comments) {
const current = { head: guard.pullRequest.head.sha, base: guard.pullRequest.base.ref };
const notice = comments.find(
(comment) =>
comment.user?.type === "Bot" &&
comment.user.login === "github-actions[bot]" &&
comment.body?.startsWith(`${guard.commentMarker}\n`),
);
const line = notice?.body?.split("\n")[1];
if (!line?.startsWith(requestMarker) || !line.endsWith(" -->")) {
return current;
}
let recorded;
try {
recorded = JSON.parse(line.slice(requestMarker.length, -4));
} catch {
return current;
}
if (recorded?.head !== current.head || recorded?.base !== current.base) {
return current;
}
// The first notice for a revision has no timestamp. On the next evaluation,
// freeze GitHub's update time before rewriting the sticky notice. A queued
// comment can never be rebound to a head first observed after it was posted.
const requestedAt = recorded.requestedAt ?? notice.updated_at;
const since = Date.parse(requestedAt);
const updatedAt = Date.parse(notice.updated_at);
if (!Number.isFinite(since) || !Number.isFinite(updatedAt) || since > updatedAt) {
return current;
}
return { ...current, requestedAt };
}
export function withApprovalRequest(guard, body) {
if (!guard.approvalRequest) {
return body;
}
const record = JSON.stringify(guard.approvalRequest)
.replaceAll("<", "\\u003c")
.replaceAll(">", "\\u003e");
return `${guard.commentMarker}\n${requestMarker}${record} -->${body.slice(guard.commentMarker.length)}`;
}
export async function findMaintainerApproval(guard) {
const { pullRequest } = guard;
const sha = pullRequest.head.sha;
const authorRole = await maintainerRole(guard, pullRequest.user);
if (authorRole) {
return { kind: "author", login: pullRequest.user.login, role: authorRole, sha };
}
const comments = await guard.api.paginate(`${guard.issuePath}/comments`);
guard.approvalRequest = approvalRequest(guard, comments);
const since = Date.parse(guard.approvalRequest.requestedAt);
if (!Number.isFinite(since)) {
return null;
}
for (const comment of comments.toReversed()) {
if (
!parseApprovalCommands(comment.body).includes(guard.approvalCommand) ||
!(Date.parse(comment.created_at) > since) ||
comment.updated_at !== comment.created_at ||
comment.user?.id === pullRequest.user.id
) {
continue;
}
const role = await maintainerRole(guard, comment.user);
if (role) {
return { kind: "comment", login: comment.user.login, role, sha, url: comment.html_url };
}
}
return null;
}
export async function finishGuard(guard, { description, requiresApproval = false }) {
guard.requiresApproval = requiresApproval;
const approval = requiresApproval ? await findMaintainerApproval(guard) : null;
await assertGuardUnchanged(guard);
const allowed = !requiresApproval || approval !== null;
await publishGuardStatus(
guard,
allowed ? "success" : "failure",
allowed ? description : "A maintainer must approve the current PR revision",
);
guard.approval = approval;
return allowed;
}