feat: add xmly support

This commit is contained in:
鲁树人 2024-09-18 23:02:05 +01:00
parent 73bad51e8e
commit e8b220b3df
2 changed files with 76 additions and 2 deletions

View File

@ -4,6 +4,7 @@ import type { DecryptCommandOptions } from '~/decrypt-worker/types.ts';
import { QQMusicV1Decipher, QQMusicV2Decipher } from '~/decrypt-worker/decipher/QQMusic.ts'; import { QQMusicV1Decipher, QQMusicV2Decipher } from '~/decrypt-worker/decipher/QQMusic.ts';
import { KuwoMusicDecipher } from '~/decrypt-worker/decipher/KuwoMusic.ts'; import { KuwoMusicDecipher } from '~/decrypt-worker/decipher/KuwoMusic.ts';
import { KugouMusicDecipher } from '~/decrypt-worker/decipher/KugouMusic.ts'; import { KugouMusicDecipher } from '~/decrypt-worker/decipher/KugouMusic.ts';
import { XimalayaAndroidDecipher, XimalayaPCDecipher } from '~/decrypt-worker/decipher/Ximalaya.ts';
export enum Status { export enum Status {
OK = 0, OK = 0,
@ -46,6 +47,9 @@ export const allCryptoFactories: DecipherFactory[] = [
// KWMv1 (*.kwm) // KWMv1 (*.kwm)
KuwoMusicDecipher.make, KuwoMusicDecipher.make,
// Ximalaya PC (*.xm)
XimalayaPCDecipher.make,
// Xiami (*.xm) // Xiami (*.xm)
// XiamiCrypto.make, // XiamiCrypto.make,
@ -67,8 +71,8 @@ export const allCryptoFactories: DecipherFactory[] = [
QQMusicV1Decipher.create, QQMusicV1Decipher.create,
// Ximalaya (Android) // Ximalaya (Android)
// XimalayaAndroidCrypto.makeX2M, XimalayaAndroidDecipher.makeX2M,
// XimalayaAndroidCrypto.makeX3M, XimalayaAndroidDecipher.makeX3M,
// QingTingFM (Android) // QingTingFM (Android)
// QingTingFM$Device.make, // QingTingFM$Device.make,

View File

@ -0,0 +1,70 @@
import { DecipherInstance, DecipherOK, DecipherResult, Status } from '~/decrypt-worker/Deciphers';
import type { DecryptCommandOptions } from '~/decrypt-worker/types.ts';
import { decryptX2MHeader, decryptX3MHeader, XmlyPC } from '@unlock-music/crypto';
import { isDataLooksLikeAudio } from '~/decrypt-worker/util/audioType.ts';
import { UnsupportedSourceFile } from '~/decrypt-worker/util/DecryptError.ts';
export class XimalayaAndroidDecipher implements DecipherInstance {
cipherName: string;
constructor(
private decipher: (buffer: Uint8Array) => void,
private cipherType: string,
) {
this.cipherName = `Ximalaya (Android, ${cipherType})`;
}
async decrypt(buffer: Uint8Array, _options: DecryptCommandOptions): Promise<DecipherResult | DecipherOK> {
// Detect with first 0x400 bytes
const slice = buffer.slice(0, 0x400);
this.decipher(slice);
if (!isDataLooksLikeAudio(slice)) {
throw new UnsupportedSourceFile(`Not a Xmly android file (${this.cipherType})`);
}
const result = new Uint8Array(buffer);
result.set(slice, 0);
return {
cipherName: this.cipherName,
status: Status.OK,
data: result,
};
}
public static makeX2M() {
return new XimalayaAndroidDecipher(decryptX2MHeader, 'X2M');
}
public static makeX3M() {
return new XimalayaAndroidDecipher(decryptX3MHeader, 'X3M');
}
}
export class XimalayaPCDecipher implements DecipherInstance {
cipherName = 'Ximalaya (PC)';
async decrypt(buffer: Uint8Array, _options: DecryptCommandOptions): Promise<DecipherResult | DecipherOK> {
// Detect with first 0x400 bytes
const headerSize = XmlyPC.getHeaderSize(buffer.subarray(0, 1024));
const xm = new XmlyPC(buffer.subarray(0, headerSize));
const { audioHeader, encryptedHeaderOffset, encryptedHeaderSize } = xm;
const plainAudioDataOffset = encryptedHeaderOffset + encryptedHeaderSize;
const plainAudioDataLength = buffer.byteLength - plainAudioDataOffset;
const encryptedAudioPart = buffer.slice(encryptedHeaderOffset, plainAudioDataOffset);
const encryptedAudioPartLen = xm.decrypt(encryptedAudioPart);
const audioSize = audioHeader.byteLength + encryptedAudioPartLen + plainAudioDataLength;
const result = new Uint8Array(audioSize);
result.set(audioHeader);
result.set(encryptedAudioPart, audioHeader.byteLength);
result.set(buffer.subarray(plainAudioDataOffset), audioHeader.byteLength + encryptedAudioPartLen);
return {
status: Status.OK,
data: result,
cipherName: this.cipherName,
};
}
public static make() {
return new XimalayaPCDecipher();
}
}