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feat: added support for QMCv2 (#11)

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鲁树人
2023-05-14 23:15:59 +01:00
parent 08c082ec2c
commit 8ab267019c
5 changed files with 44 additions and 14 deletions
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28
src/decrypt-worker/worker.ts
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@@ -2,9 +2,11 @@ import { WorkerServerBus } from '~/util/WorkerEventBus';
import { DECRYPTION_WORKER_ACTION_NAME } from './constants';
import type { CryptoFactory } from './crypto/CryptoBase';
import { fetchParakeet } from '@jixun/libparakeet';
import { XiamiCrypto } from './crypto/xiami/xiami';
import { QMC1Crypto } from './crypto/qmc/qmc_v1';
import { fetchParakeet } from '@jixun/libparakeet';
import { QMC2Crypto } from './crypto/qmc/qmc_v2';
const bus = new WorkerServerBus();
onmessage = bus.onmessage;
@@ -15,6 +17,9 @@ const decryptorFactories: CryptoFactory[] = [
// QMCv1 (*.qmcflac)
() => new QMC1Crypto(),
// QMCv2 (*.mflac)
() => new QMC2Crypto(),
];
// Use first 4MiB of the file to perform check.
@@ -27,17 +32,22 @@ bus.addEventHandler(DECRYPTION_WORKER_ACTION_NAME.DECRYPT, async (blobURI) => {
for (const factory of decryptorFactories) {
const decryptor = factory();
if (await decryptor.isSupported(blob)) {
const decryptedBlob = await decryptor.decrypt(blob);
try {
const decryptedBlob = await decryptor.decrypt(blob);
// Check if we had a successful decryption
const header = await decryptedBlob.slice(0, TEST_FILE_HEADER_LEN).arrayBuffer();
const audioExt = parakeet.detectAudioExtension(header);
if (!decryptor.hasSignature() && audioExt === 'bin') {
// skip this decryptor result
// Check if we had a successful decryption
const header = await decryptedBlob.slice(0, TEST_FILE_HEADER_LEN).arrayBuffer();
const audioExt = parakeet.detectAudioExtension(header);
if (!decryptor.hasSignature() && audioExt === 'bin') {
// skip this decryptor result
continue;
}
return { decrypted: URL.createObjectURL(decryptedBlob), ext: audioExt };
} catch (error) {
console.error('decrypt failed: ', error);
continue;
}
return { decrypted: URL.createObjectURL(decryptedBlob), ext: audioExt };
}
}