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fix: include ALTCHA signature in verify payload; case-insensitive variant filter

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- squid.js: add top-level signature from challenge response to verify payload
  (server added signature validation, causing HTTP 400 without it)
- ytdlp.js: switch variant filter from !*= to !~= (?i) so Remix/REMIX/remix
  are all rejected, not just lowercase

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
HoneyandClaude Sonnet 4.6 committed 2026-05-03 01:27:10 +02:00
1 parent 598c108214
commit b9692e6f08
2 files changed
+14 -13
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backend/lib/squid.js
+2 -2
View File
@@ -106,8 +106,8 @@ async function getAltchaCookie() {
// 2. Solve PoW // 2. Solve PoW
const solution = await solveAltcha(challenge); const solution = await solveAltcha(challenge);
// 3. Verify — payload contains the unwrapped challenge params + our solution // 3. Verify — include the top-level signature so the server can authenticate the challenge
const payload = Buffer.from(JSON.stringify({ challenge, solution })).toString('base64'); const payload = Buffer.from(JSON.stringify({ challenge, solution, signature: chBody.signature })).toString('base64');
const vRes = await httpsPost(`${SQUID_BASE}/api/altcha/verify`, { payload }); const vRes = await httpsPost(`${SQUID_BASE}/api/altcha/verify`, { payload });
if (vRes.status !== 200) throw new Error(`ALTCHA verify HTTP ${vRes.status}`); if (vRes.status !== 200) throw new Error(`ALTCHA verify HTTP ${vRes.status}`);
backend/lib/ytdlp.js
+12 -11
View File
@@ -28,18 +28,19 @@ function buildTitleKeywords(title) {
function buildVariantFilter(title) { function buildVariantFilter(title) {
const t = (title || '').toLowerCase(); const t = (title || '').toLowerCase();
// !~= (?i) is yt-dlp's case-insensitive "does not match regex" — catches Remix/REMIX/remix etc.
const RULES = [ const RULES = [
{ key: 'sped', expr: 'title !*= sped' }, { key: 'sped', expr: 'title !~= (?i)sped up' },
{ key: 'speedup', expr: 'title !*= speedup' }, { key: 'speedup', expr: 'title !~= (?i)speed\\s*up' },
{ key: 'slowed', expr: 'title !*= slowed' }, { key: 'slowed', expr: 'title !~= (?i)slowed' },
{ key: 'reverb', expr: 'title !*= reverb' }, { key: 'reverb', expr: 'title !~= (?i)reverb' },
{ key: 'nightcore', expr: 'title !*= nightcore' }, { key: 'nightcore', expr: 'title !~= (?i)nightcore' },
{ key: 'karaoke', expr: 'title !*= karaoke' }, { key: 'karaoke', expr: 'title !~= (?i)karaoke' },
{ key: 'parody', expr: 'title !*= parody' }, { key: 'parody', expr: 'title !~= (?i)parody' },
{ key: 'remix', expr: 'title !*= remix' }, { key: 'remix', expr: 'title !~= (?i)remix' },
{ key: 'cover', expr: 'title !*= cover' }, { key: 'cover', expr: 'title !~= (?i)cover' },
{ key: 'acoustic', expr: 'title !*= acoustic' }, { key: 'acoustic', expr: 'title !~= (?i)acoustic' },
{ key: 'instrumental', expr: 'title !*= instrumental' }, { key: 'instrumental', expr: 'title !~= (?i)instrumental' },
]; ];
const parts = RULES.filter(r => !t.includes(r.key)).map(r => r.expr); const parts = RULES.filter(r => !t.includes(r.key)).map(r => r.expr);
return parts.length ? parts.join(' & ') : ''; return parts.length ? parts.join(' & ') : '';