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tools: fix root certificate updater
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Determine the NSS version from actual Firefox releases, instead of
attempting to parse a wiki page (which is sensitive to formatting
changes and relies on the page being up to date).

PR-URL: #55681
Reviewed-By: Luigi Pinca <luigipinca@gmail.com>
Reviewed-By: Michaël Zasso <targos@protonmail.com>
Reviewed-By: Rafael Gonzaga <rafael.nunu@hotmail.com>
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@richardlau @ruyadorno
richardlau authored and ruyadorno committed Nov 27, 2024
1 parent 3f8a5d8 commit d95aa24
Showing 1 changed file with 69 additions and 117 deletions.
186 changes: 69 additions & 117 deletions tools/dep_updaters/update-root-certs.mjs
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Original file line number Diff line number Diff line change
Expand Up @@ -8,109 +8,78 @@ import { pipeline } from 'node:stream/promises';
import { fileURLToPath } from 'node:url';
import { parseArgs } from 'node:util';

// Constants for NSS release metadata.
const kNSSVersion = 'version';
const kNSSDate = 'date';
const kFirefoxVersion = 'firefoxVersion';
const kFirefoxDate = 'firefoxDate';

const __filename = fileURLToPath(import.meta.url);
const now = new Date();

const formatDate = (d) => {
const iso = d.toISOString();
return iso.substring(0, iso.indexOf('T'));
};

const getCertdataURL = (version) => {
const tag = `NSS_${version.replaceAll('.', '_')}_RTM`;
const certdataURL = `https://hg.mozilla.org/projects/nss/raw-file/${tag}/lib/ckfw/builtins/certdata.txt`;
const certdataURL = `https://raw.githubusercontent.com/nss-dev/nss/refs/tags/${tag}/lib/ckfw/builtins/certdata.txt`;
return certdataURL;
};

const normalizeTD = (text = '') => {
// Remove whitespace and any HTML tags.
return text?.trim().replace(/<.*?>/g, '');
};
const getReleases = (text) => {
const releases = [];
const tableRE = /<table [^>]+>([\S\s]*?)<\/table>/g;
const tableRowRE = /<tr ?[^>]*>([\S\s]*?)<\/tr>/g;
const tableHeaderRE = /<th ?[^>]*>([\S\s]*?)<\/th>/g;
const tableDataRE = /<td ?[^>]*>([\S\s]*?)<\/td>/g;
for (const table of text.matchAll(tableRE)) {
const columns = {};
const matches = table[1].matchAll(tableRowRE);
// First row has the table header.
let row = matches.next();
if (row.done) {
continue;
}
const headers = Array.from(row.value[1].matchAll(tableHeaderRE), (m) => m[1]);
if (headers.length > 0) {
for (let i = 0; i < headers.length; i++) {
if (/NSS version/i.test(headers[i])) {
columns[kNSSVersion] = i;
} else if (/Release.*from branch/i.test(headers[i])) {
columns[kNSSDate] = i;
} else if (/Firefox version/i.test(headers[i])) {
columns[kFirefoxVersion] = i;
} else if (/Firefox release date/i.test(headers[i])) {
columns[kFirefoxDate] = i;
}
}
}
// Filter out "NSS Certificate bugs" table.
if (columns[kNSSDate] === undefined) {
continue;
}
// Scrape releases.
row = matches.next();
while (!row.done) {
const cells = Array.from(row.value[1].matchAll(tableDataRE), (m) => m[1]);
const release = {};
release[kNSSVersion] = normalizeTD(cells[columns[kNSSVersion]]);
release[kNSSDate] = new Date(normalizeTD(cells[columns[kNSSDate]]));
release[kFirefoxVersion] = normalizeTD(cells[columns[kFirefoxVersion]]);
release[kFirefoxDate] = new Date(normalizeTD(cells[columns[kFirefoxDate]]));
releases.push(release);
row = matches.next();
}
const getFirefoxReleases = async (everything = false) => {
const releaseDataURL = `https://nucleus.mozilla.org/rna/all-releases.json${everything ? '?all=true' : ''}`;
if (values.verbose) {
console.log(`Fetching Firefox release data from ${releaseDataURL}.`);
}
const releaseData = await fetch(releaseDataURL);
if (!releaseData.ok) {
console.error(`Failed to fetch ${releaseDataURL}: ${releaseData.status}: ${releaseData.statusText}.`);
process.exit(-1);
}
return releases;
return (await releaseData.json()).filter((release) => {
// We're only interested in public releases of Firefox.
return (release.product === 'Firefox' && release.channel === 'Release' && release.is_public === true);
}).sort((a, b) => {
// Sort results by release date.
return new Date(b.release_date) - new Date(a.release_date);
});
};

const getLatestVersion = async (releases) => {
const arrayNumberSortDescending = (x, y, i) => {
if (x[i] === undefined && y[i] === undefined) {
return 0;
} else if (x[i] === y[i]) {
return arrayNumberSortDescending(x, y, i + 1);
}
return (y[i] ?? 0) - (x[i] ?? 0);
};
const extractVersion = (t) => {
return t[kNSSVersion].split('.').map((n) => parseInt(n));
};
const releaseSorter = (x, y) => {
return arrayNumberSortDescending(extractVersion(x), extractVersion(y), 0);
};
// Return the most recent certadata.txt that exists on the server.
const sortedReleases = releases.sort(releaseSorter).filter(pastRelease);
for (const candidate of sortedReleases) {
const candidateURL = getCertdataURL(candidate[kNSSVersion]);
if (values.verbose) {
console.log(`Trying ${candidateURL}`);
const getFirefoxRelease = async (version) => {
let releases = await getFirefoxReleases();
let found;
if (version === undefined) {
// No version specified. Find the most recent.
if (releases.length > 0) {
found = releases[0];
} else {
if (values.verbose) {
console.log('Unable to find release data for Firefox. Searching full release data.');
}
releases = await getFirefoxReleases(true);
found = releases[0];
}
const response = await fetch(candidateURL, { method: 'HEAD' });
if (response.ok) {
return candidate[kNSSVersion];
} else {
// Search for the specified release.
found = releases.find((release) => release.version === version);
if (found === undefined) {
if (values.verbose) {
console.log(`Unable to find release data for Firefox ${version}. Searching full release data.`);
}
releases = await getFirefoxReleases(true);
found = releases.find((release) => release.version === version);
}
}
return found;
};

const pastRelease = (r) => {
return r[kNSSDate] < now;
const getNSSVersion = async (release) => {
const latestFirefox = release.version;
const firefoxTag = `FIREFOX_${latestFirefox.replace('.', '_')}_RELEASE`;
const tagInfoURL = `https://hg.mozilla.org/releases/mozilla-release/raw-file/${firefoxTag}/security/nss/TAG-INFO`;
if (values.verbose) {
console.log(`Fetching NSS tag from ${tagInfoURL}.`);
}
const tagInfo = await fetch(tagInfoURL);
if (!tagInfo.ok) {
console.error(`Failed to fetch ${tagInfoURL}: ${tagInfo.status}: ${tagInfo.statusText}`);
}
const tag = await tagInfo.text();
if (values.verbose) {
console.log(`Found tag ${tag}.`);
}
// Tag will be of form `NSS_x_y_RTM`. Convert to `x.y`.
return tag.split('_').slice(1, -1).join('.');
};

const options = {
Expand All @@ -135,9 +104,9 @@ const {
});

if (values.help) {
console.log(`Usage: ${basename(__filename)} [OPTION]... [VERSION]...`);
console.log(`Usage: ${basename(__filename)} [OPTION]... [RELEASE]...`);
console.log();
console.log('Updates certdata.txt to NSS VERSION (most recent release by default).');
console.log('Updates certdata.txt to NSS version contained in Firefox RELEASE (default: most recent release).');
console.log('');
console.log(' -f, --file=FILE writes a commit message reflecting the change to the');
console.log(' specified FILE');
Expand All @@ -146,29 +115,11 @@ if (values.help) {
process.exit(0);
}

const scheduleURL = 'https://wiki.mozilla.org/NSS:Release_Versions';
if (values.verbose) {
console.log(`Fetching NSS release schedule from ${scheduleURL}`);
}
const schedule = await fetch(scheduleURL);
if (!schedule.ok) {
console.error(`Failed to fetch ${scheduleURL}: ${schedule.status}: ${schedule.statusText}`);
process.exit(-1);
}
const scheduleText = await schedule.text();
const nssReleases = getReleases(scheduleText);

const firefoxRelease = await getFirefoxRelease(positionals[0]);
// Retrieve metadata for the NSS release being updated to.
const version = positionals[0] ?? await getLatestVersion(nssReleases);
const release = nssReleases.find((r) => {
return new RegExp(`^${version.replace('.', '\\.')}\\b`).test(r[kNSSVersion]);
});
if (!pastRelease(release)) {
console.warn(`Warning: NSS ${version} is not due to be released until ${formatDate(release[kNSSDate])}`);
}
const version = await getNSSVersion(firefoxRelease);
if (values.verbose) {
console.log('Found NSS version:');
console.log(release);
console.log(`Updating to NSS version ${version}`);
}

// Fetch certdata.txt and overwrite the local copy.
Expand Down Expand Up @@ -213,14 +164,15 @@ const added = [ ...diff.matchAll(certsAddedRE) ].map((m) => m[1]);
const removed = [ ...diff.matchAll(certsRemovedRE) ].map((m) => m[1]);

const commitMsg = [
`crypto: update root certificates to NSS ${release[kNSSVersion]}`,
`crypto: update root certificates to NSS ${version}`,
'',
`This is the certdata.txt[0] from NSS ${release[kNSSVersion]}, released on ${formatDate(release[kNSSDate])}.`,
'',
`This is the version of NSS that ${release[kFirefoxDate] < now ? 'shipped' : 'will ship'} in Firefox ${release[kFirefoxVersion]} on`,
`${formatDate(release[kFirefoxDate])}.`,
`This is the certdata.txt[0] from NSS ${version}.`,
'',
];
if (firefoxRelease) {
commitMsg.push(`This is the version of NSS that shipped in Firefox ${firefoxRelease.version} on ${firefoxRelease.release_date}.`);
commitMsg.push('');
}
if (added.length > 0) {
commitMsg.push('Certificates added:');
commitMsg.push(...added.map((cert) => `- ${cert}`));
Expand All @@ -234,7 +186,7 @@ if (removed.length > 0) {
commitMsg.push(`[0] ${certdataURL}`);
const delimiter = randomUUID();
const properties = [
`NEW_VERSION=${release[kNSSVersion]}`,
`NEW_VERSION=${version}`,
`COMMIT_MSG<<${delimiter}`,
...commitMsg,
delimiter,
Expand Down

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