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simplify: decrypt/ncm-cache & decrypt/common

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This commit is contained in:
Emmm Monster 2021-06-03 12:47:51 +08:00
parent f0875ad175
commit 48f879cb58
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2 changed files with 22 additions and 25 deletions
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30
src/decrypt/common.ts
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@ -8,35 +8,35 @@ import {Decrypt as KwmDecrypt} from "@/decrypt/kwm";
import {Decrypt as RawDecrypt} from "@/decrypt/raw"; import {Decrypt as RawDecrypt} from "@/decrypt/raw";
import {Decrypt as TmDecrypt} from "@/decrypt/tm"; import {Decrypt as TmDecrypt} from "@/decrypt/tm";
import {DecryptResult, FileInfo} from "@/decrypt/entity"; import {DecryptResult, FileInfo} from "@/decrypt/entity";
import {SplitFilename} from "@/decrypt/utils";
export async function CommonDecrypt(file: FileInfo): Promise<DecryptResult> { export async function CommonDecrypt(file: FileInfo): Promise<DecryptResult> {
let raw_ext = file.name.substring(file.name.lastIndexOf(".") + 1, file.name.length).toLowerCase(); const raw = SplitFilename(file.name)
let raw_filename = file.name.substring(0, file.name.lastIndexOf("."));
let rt_data: DecryptResult; let rt_data: DecryptResult;
switch (raw_ext) { switch (raw.ext) {
case "ncm":// Netease Mp3/Flac case "ncm":// Netease Mp3/Flac
rt_data = await NcmDecrypt(file.raw, raw_filename, raw_ext); rt_data = await NcmDecrypt(file.raw, raw.name, raw.ext);
break; break;
case "uc":// Netease Cache case "uc":// Netease Cache
rt_data = await NcmCacheDecrypt(file.raw, raw_filename, raw_ext); rt_data = await NcmCacheDecrypt(file.raw, raw.name, raw.ext);
break; break;
case "kwm":// Kuwo Mp3/Flac case "kwm":// Kuwo Mp3/Flac
rt_data = await KwmDecrypt(file.raw, raw_filename, raw_ext); rt_data = await KwmDecrypt(file.raw, raw.name, raw.ext);
break break
case "xm": // Xiami Wav/M4a/Mp3/Flac case "xm": // Xiami Wav/M4a/Mp3/Flac
case "wav":// Xiami/Raw Wav case "wav":// Xiami/Raw Wav
case "mp3":// Xiami/Raw Mp3 case "mp3":// Xiami/Raw Mp3
case "flac":// Xiami/Raw Flac case "flac":// Xiami/Raw Flac
case "m4a":// Xiami/Raw M4a case "m4a":// Xiami/Raw M4a
rt_data = await XmDecrypt(file.raw, raw_filename, raw_ext); rt_data = await XmDecrypt(file.raw, raw.name, raw.ext);
break; break;
case "ogg":// Raw Ogg case "ogg":// Raw Ogg
rt_data = await RawDecrypt(file.raw, raw_filename, raw_ext); rt_data = await RawDecrypt(file.raw, raw.name, raw.ext);
break; break;
case "tm0":// QQ Music IOS Mp3 case "tm0":// QQ Music IOS Mp3
case "tm3":// QQ Music IOS Mp3 case "tm3":// QQ Music IOS Mp3
rt_data = await RawDecrypt(file.raw, raw_filename, "mp3"); rt_data = await RawDecrypt(file.raw, raw.name, "mp3");
break; break;
case "qmc3"://QQ Music Android Mp3 case "qmc3"://QQ Music Android Mp3
case "qmc2"://QQ Music Android Ogg case "qmc2"://QQ Music Android Ogg
@ -53,26 +53,26 @@ export async function CommonDecrypt(file: FileInfo): Promise<DecryptResult> {
case "6f6767"://QQ Music Weiyun Ogg case "6f6767"://QQ Music Weiyun Ogg
case "6d3461"://QQ Music Weiyun M4a case "6d3461"://QQ Music Weiyun M4a
case "776176"://QQ Music Weiyun Wav case "776176"://QQ Music Weiyun Wav
rt_data = await QmcDecrypt(file.raw, raw_filename, raw_ext); rt_data = await QmcDecrypt(file.raw, raw.name, raw.ext);
break; break;
case "tm2":// QQ Music IOS M4a case "tm2":// QQ Music IOS M4a
case "tm6":// QQ Music IOS M4a case "tm6":// QQ Music IOS M4a
rt_data = await TmDecrypt(file.raw, raw_filename); rt_data = await TmDecrypt(file.raw, raw.name);
break; break;
case "cache"://QQ Music Cache case "cache"://QQ Music Cache
rt_data = await QmcCacheDecrypt(file.raw, raw_filename, raw_ext); rt_data = await QmcCacheDecrypt(file.raw, raw.name, raw.ext);
break; break;
case "vpr": case "vpr":
case "kgm": case "kgm":
case "kgma": case "kgma":
rt_data = await KgmDecrypt(file.raw, raw_filename, raw_ext); rt_data = await KgmDecrypt(file.raw, raw.name, raw.ext);
break break
default: default:
throw "不支持此文件格式" throw "不支持此文件格式"
} }
if (!rt_data.rawExt) rt_data.rawExt = raw_ext; if (!rt_data.rawExt) rt_data.rawExt = raw.ext;
if (!rt_data.rawFilename) rt_data.rawFilename = raw_filename; if (!rt_data.rawFilename) rt_data.rawFilename = raw.name;
console.log(rt_data); console.log(rt_data);
return rt_data; return rt_data;
} }

17
src/decrypt/ncmcache.ts
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@ -4,18 +4,15 @@ import {DecryptResult} from "@/decrypt/entity";
import {parseBlob as metaParseBlob} from "music-metadata-browser"; import {parseBlob as metaParseBlob} from "music-metadata-browser";
export async function Decrypt(file: Blob, raw_filename: string, raw_ext: string, detect: boolean = true) export async function Decrypt(file: Blob, raw_filename: string, raw_ext: string)
: Promise<DecryptResult> { : Promise<DecryptResult> {
let ext = raw_ext; const buffer = new Uint8Array(await GetArrayBuffer(file));
if (detect) { let length = buffer.length
const buffer = new Uint8Array(await GetArrayBuffer(file)); for (let i = 0; i < length; i++) {
let length = buffer.length buffer[i] ^= 163
for (let i = 0; i < length; i++) {
buffer[i] ^= 163
}
ext = SniffAudioExt(buffer, raw_ext);
if (ext !== raw_ext) file = new Blob([buffer], {type: AudioMimeType[ext]})
} }
const ext = SniffAudioExt(buffer, raw_ext);
if (ext !== raw_ext) file = new Blob([buffer], {type: AudioMimeType[ext]})
const tag = await metaParseBlob(file); const tag = await metaParseBlob(file);
const {title, artist} = GetMetaFromFile(raw_filename, tag.common.title, tag.common.artist) const {title, artist} = GetMetaFromFile(raw_filename, tag.common.title, tag.common.artist)