Files
hnefatafl/deploy/hash-tokens.ts
T

45 lines
1.7 KiB
TypeScript

// One-time migration: replace each seat line's raw token with its SHA-256,
// so no ledger on disk or in a backup holds a live seat key. Idempotent; a
// line already hashed is left alone. Run ON the droplet from the server
// directory (tsx is installed there):
// cd /opt/hnefatafl/app/server && npx tsx ../deploy/hash-tokens.ts /var/lib/hnefatafl/rooms
// Browsers keep their raw tokens; the server hashes what they send and
// compares, so nobody loses a seat.
import { createHash } from 'node:crypto';
import { readdirSync, readFileSync, renameSync, statSync, writeFileSync, chownSync } from 'node:fs';
import { join } from 'node:path';
const dir = process.argv[2];
if (!dir) {
console.error('usage: hash-tokens.ts <ledger-dir>');
process.exit(2);
}
let files = 0;
let lines = 0;
for (const file of readdirSync(dir).filter((f) => f.endsWith('.jsonl'))) {
const path = join(dir, file);
const raw = readFileSync(path, 'utf8');
let changed = 0;
const out = raw
.split('\n')
.map((line) => {
if (!line.trim()) return line;
const entry = JSON.parse(line) as Record<string, unknown>;
if (entry.t !== 'seat' || typeof entry.token !== 'string') return line;
const { token, ...rest } = entry;
changed += 1;
return JSON.stringify({ ...rest, tokenHash: token ? createHash('sha256').update(token).digest('hex') : '' });
})
.join('\n');
if (!changed) continue;
const { uid, gid } = statSync(path);
writeFileSync(path + '.tmp', out);
chownSync(path + '.tmp', uid, gid);
renameSync(path + '.tmp', path);
files += 1;
lines += changed;
}
console.log(`${files} ledger${files === 1 ? '' : 's'} rewritten, ${lines} seat line${lines === 1 ? '' : 's'} hashed`);