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refactor: improve flow of decryption (#2)

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鲁树人
2023-05-21 23:38:32 +01:00
parent bc1c836d57
commit f7353ef4cb
7 changed files with 43 additions and 21 deletions
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17
src/decrypt-worker/worker/handler/decrypt.ts
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@@ -46,17 +46,24 @@ class DecryptCommandHandler {
return null;
}
const decrypted = await this.log('decrypt', async () => crypto.decrypt(this.buffer, this.blob));
const decrypted = await this.log(`decrypt (${crypto.cryptoName})`, () => crypto.decrypt(this.buffer, this.blob));
// Check if we had a successful decryption
const audioExt = await this.log(`detect-audio-ext`, async () => {
const header = await toArrayBuffer(decrypted.slice(0, TEST_FILE_HEADER_LEN));
return this.parakeet.detectAudioExtension(header);
});
const audioExt = crypto.overrideExtension ?? (await this.detectAudioExtension(decrypted));
if (crypto.checkByDecryptHeader && audioExt === 'bin') {
return null;
}
return { decrypted: URL.createObjectURL(toBlob(decrypted)), ext: audioExt };
}
async detectAudioExtension(data: Blob | ArrayBuffer): Promise<string> {
return this.log(`detect-audio-ext`, async () => {
const header = await toArrayBuffer(data.slice(0, TEST_FILE_HEADER_LEN));
return this.parakeet.detectAudioExtension(header);
});
}
async acceptByDecryptFileHeader(crypto: CryptoBase): Promise<boolean> {
// File too small, ignore.
if (this.buffer.byteLength <= TEST_FILE_HEADER_LEN) {