jackwener/OpenCLI · error · AuthRequiredError

Pixiv PHPSESSID prefix unparseable

Error message

Pixiv PHPSESSID prefix unparseable

What it means

Inside the in-page probe, after the global-data meta tag and /ajax/user/extra both fail to yield a user id, the code parses the PHPSESSID cookie's `<uid>_` prefix to identify the user. If that prefix is empty/unparseable, the probe returns kind='auth' with detail 'Pixiv PHPSESSID prefix unparseable' and verifyPixivIdentity throws AuthRequiredError — the session cookie exists but doesn't identify a logged-in user.

Source

Thrown at clis/pixiv/auth.js:44

      }
      const r = await fetch('/ajax/user/extra', { credentials: 'include', headers: { Accept: 'application/json' } });
      if (r.status === 401 || r.status === 403) {
        return { kind: 'auth', detail: 'Pixiv /ajax/user/extra HTTP ' + r.status };
      }
      if (!r.ok) return { kind: 'http', httpStatus: r.status };
      const d = await r.json();
      if (d?.error) return { kind: 'auth', detail: 'Pixiv /ajax/user/extra error=true — anonymous' };
      const phpSess = (document.cookie.split('; ').find(c => c.startsWith('PHPSESSID=')) || '').split('=')[1] || '';
      const uid = phpSess.split('_')[0] || '';
      if (!uid) {
        return { kind: 'auth', detail: 'Pixiv PHPSESSID prefix unparseable' };
      }
      return { ok: true, user_id: uid, name: '' };
    } catch (e) {
      return { kind: 'exception', detail: String(e && e.message || e) };
    }
  })()`);
  if (probe?.kind === 'auth') throw new AuthRequiredError('pixiv.net', probe.detail);
  if (probe?.kind === 'http') throw new CommandExecutionError(`HTTP ${probe.httpStatus} from Pixiv ajax`);
  if (probe?.kind === 'exception') throw new CommandExecutionError(`Pixiv whoami failed: ${probe.detail}`);
  if (!probe?.ok) throw new CommandExecutionError(`Unexpected Pixiv probe: ${JSON.stringify(probe)}`);
  return { user_id: probe.user_id, name: probe.name };
}

registerSiteAuthCommands({
  site: 'pixiv',
  domain: 'pixiv.net',
  loginUrl: 'https://accounts.pixiv.net/login',
  columns: ['user_id', 'name'],
  quickCheck: hasPixivSessionCookie,
  verify: verifyPixivIdentity,
  poll: async (page) => {
    if (!await hasPixivSessionCookie(page)) {
      throw new AuthRequiredError('pixiv.net', 'Waiting for Pixiv PHPSESSID cookie');
    }
    return verifyPixivIdentity(page);

View on GitHub (pinned to 49907e53dc)

Solutions

1. Complete the pixiv login flow again so a properly `<uid>_hash`-shaped PHPSESSID is issued.
2. Delete the stale anonymous PHPSESSID cookie for pixiv.net, then log in fresh.
3. Check whether pixiv removed the `global-data` meta tag and update the probe to rely on /ajax/user/extra user data.
4. Verify logged-in state in the browser before running auth-required pixiv commands.

const sess = (document.cookie.split('; ').find(c => c.startsWith('PHPSESSID=')) || '').split('=')[1] || '';
if (!/^\d+_.+/.test(sess)) {
  // anonymous or malformed session — trigger a fresh login before probing identity
  await relogin();
}

function isAuthedPixivSession(phpsessid) {
  return typeof phpsessid === 'string' && /^\d+_.+/.test(phpsessid);
}

try {
  await pixivWhoAmI();
} catch (err) {
  if (String(err.message).includes('PHPSESSID prefix unparseable')) {
    await clearCookie('PHPSESSID', 'https://www.pixiv.net');
    await interactiveLogin('https://accounts.pixiv.net/login');
    await pixivWhoAmI();
  } else throw err;
}

When it happens

Trigger: PHPSESSID present but its value lacks a numeric underscore prefix (anonymous/bare-hash session cookie), while the global-data meta tag is absent (pixiv A/B test, page variant, or SPA change) and /ajax/user/extra returns a non-error anonymous payload.

Common situations: Login half-completed: anonymous cookie set before the authenticated one; cookie manually copied from an anonymous browsing session; pixiv changed the global-data meta tag so the fallback path runs; regional/logged-out pixiv variant serving no global-data.

Related errors

• Pixiv PHPSESSID cookie missing
• Waiting for Pixiv PHPSESSID cookie
• Waiting for Ctrip login_uid cookie
• ${probe.detail}
• my.hupu.com

AI-assisted analysis of jackwener/OpenCLI@49907e53dc (2026-08-29). Data as JSON: /api/errors/59e2d37a93b72108. Report an issue: GitHub.