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fix(web): harden WhatsApp creds persistence

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This commit is contained in:
Peter Steinberger
2025-12-21 13:58:31 +00:00
parent 4f3a3e93a9
commit ff63204d17
2 changed files with 149 additions and 3 deletions
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25
src/web/session.ts
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@@ -23,6 +23,18 @@ export const WA_WEB_AUTH_DIR = path.join(CONFIG_DIR, "credentials");
const WA_CREDS_PATH = path.join(WA_WEB_AUTH_DIR, "creds.json");
const WA_CREDS_BACKUP_PATH = path.join(WA_WEB_AUTH_DIR, "creds.json.bak");
let credsSaveQueue: Promise<void> = Promise.resolve();
function enqueueSaveCreds(
saveCreds: () => Promise<void> | void,
logger: ReturnType<typeof getChildLogger>,
): void {
credsSaveQueue = credsSaveQueue
.then(() => safeSaveCreds(saveCreds, logger))
.catch((err) => {
logger.warn({ error: String(err) }, "WhatsApp creds save queue error");
});
}
function readCredsJsonRaw(filePath: string): string | null {
try {
if (!fsSync.existsSync(filePath)) return null;
@@ -66,8 +78,15 @@ async function safeSaveCreds(
): Promise<void> {
try {
// Best-effort backup so we can recover after abrupt restarts.
if (fsSync.existsSync(WA_CREDS_PATH)) {
fsSync.copyFileSync(WA_CREDS_PATH, WA_CREDS_BACKUP_PATH);
// Important: don't clobber a good backup with a corrupted/truncated creds.json.
const raw = readCredsJsonRaw(WA_CREDS_PATH);
if (raw) {
try {
JSON.parse(raw);
fsSync.copyFileSync(WA_CREDS_PATH, WA_CREDS_BACKUP_PATH);
} catch {
// keep existing backup
}
}
} catch {
// ignore backup failures
@@ -113,7 +132,7 @@ export async function createWaSocket(
markOnlineOnConnect: false,
});
sock.ev.on("creds.update", () => safeSaveCreds(saveCreds, sessionLogger));
sock.ev.on("creds.update", () => enqueueSaveCreds(saveCreds, sessionLogger));
sock.ev.on(
"connection.update",
(update: Partial<import("@whiskeysockets/baileys").ConnectionState>) => {