feat: align with upstream 1.5.9.9

2026-09-12 18:21:11 +08:00
commit 34f0679117
805 changed files with 376275 additions and 0 deletions
@@ -0,0 +1,151 @@
+// 将 PQ 基础链接的路径替换为高音质资源路径
+function upgradeUrl(url: string, quality: string) {
+  let upgraded = url
+  switch (quality) {
+    case 'HQ':
+      upgraded = url.replace('MP3_128_16_Stero', 'MP3_320_16_Stero')
+      break
+    case 'SQ':
+      upgraded = url.replace('标清高清/MP3_128_16_Stero', '歌曲下载/flac').replace('.mp3', '.flac')
+      break
+    case 'ZQ':
+    case 'ZQ24':
+      upgraded = url.replace('标清高清/MP3_128_16_Stero', '歌曲下载/flac_24bit').replace('.mp3', '.flac')
+      break
+    case 'PQ':
+    default:
+      return url
+  }
+  // 路径片段未命中时替换不生效，实际仍为基础音质，记录日志便于排查
+  if (upgraded === url) {
+    console.warn(`[migu/playurl.get] 音质升级未命中（目标 ${quality}），回退为基础音质链接`)
+  }
+  return upgraded
+}
+
+// 高音质资源可能缺失（404），按降级链逐级回退：ZQ24 → SQ → HQ → PQ
+const QUALITY_FALLBACK_CHAIN: Record<string, string[]> = {
+  ZQ24: ['ZQ24', 'SQ', 'HQ', 'PQ'],
+  ZQ: ['ZQ24', 'SQ', 'HQ', 'PQ'],
+  SQ: ['SQ', 'HQ', 'PQ'],
+  HQ: ['HQ', 'PQ'],
+  PQ: ['PQ']
+}
+
+/**
+ * HEAD 探测链接可用性，探测失败时保守视为可用，避免误降级
+ */
+async function isUrlAvailable(url: string): Promise<boolean> {
+  try {
+    const res = await fetch(url, { method: 'HEAD', signal: AbortSignal.timeout(5000) })
+    return res.ok
+  } catch {
+    return true
+  }
+}
+
+/**
+ * 按降级链逐级升级并探测，返回第一个可用的链接与实际音质
+ */
+async function resolveAvailableUrl(baseUrl: string, toneFlag: string): Promise<{ url: string; quality: string }> {
+  const chain = QUALITY_FALLBACK_CHAIN[toneFlag] || ['PQ']
+  for (const level of chain) {
+    const candidate = upgradeUrl(baseUrl, level)
+    // PQ 为官方接口直出链接，无需探测
+    if (level === 'PQ' || (await isUrlAvailable(candidate))) {
+      if (level !== toneFlag) {
+        console.warn(`[migu/playurl.get] ${toneFlag} 音质链接不可用，已降级为 ${level}`)
+      }
+      return { url: candidate, quality: level }
+    }
+  }
+  return { url: baseUrl, quality: 'PQ' }
+}
+
+function strToUtf8Bytes(str: string): Uint8Array {
+  return new TextEncoder().encode(str)
+}
+
+function utf8Bytes2str(bs: Uint8Array): string {
+  const a: string[] = []
+  for (const b of bs) {
+    if (b < 16) {
+      a.push(String.fromCharCode(b))
+    } else { 
+      a.push('%'); a.push(b.toString(16));
+    }
+  }; return decodeURIComponent(a.join(''))
+}
+
+function decode(e: Uint8Array, t: string) {
+  if (0 == t.length) return null;
+  var n = e.length;
+  if (n < 4) return null;
+  if (171 != e[0] || 205 != e[1]) return null;
+  if (1 != e[2]) return null;
+  for (var r = e[3], o = strToUtf8Bytes(t), a = o.length, i = new Uint8Array(n - 4), s = 0, c = 4; c < n; c++, s++) 
+    // @ts-ignore
+    i[s] = e[c] + r - o[s % a];
+  return i
+}
+
+async function mr(ab: ArrayBuffer): Promise<any> {
+  const u8 = new Uint8Array(ab), dd = decode(u8, 'Jk8qzuePiJ1qE3mDYhLQ3T73DtDoAhLP')
+  if (!dd) throw new Error('解密失败')
+  const j = utf8Bytes2str(dd)
+  return JSON.parse(j)
+}
+
+export default defineEventHandler(async (event) => {
+  const query = getQuery(event)
+  const contentId = query.contentId as string;
+  // 白名单校验，非法值回退为基础音质
+  const VALID_TONE_FLAGS = ['PQ', 'HQ', 'SQ', 'ZQ', 'ZQ24']
+  const toneFlag = VALID_TONE_FLAGS.includes(query.toneFlag as string) ? (query.toneFlag as string) : 'PQ';
+
+  if (!contentId) throw createError({ statusCode: 400, message: 'Missing contentId' });
+
+  try {
+    const headers = {
+      'birth': 'h5page',
+      'channel': '014X031',
+      'Referer': 'https://y.migu.cn/',
+      'location-data': '30.6698676660,104.1229614820',
+      'location-info': '',
+    }, baseUrl = 'http://c.musicapp.migu.cn', strategyU = '/listen-url/h5',
+    // 匿名请求上游仅提供基础音质，固定以 PQ 取链后再本地升级路径
+    params = `contentId=${contentId}&copyrightId=&resourceType=2&netType=01&toneFlag=PQ&scene=&lowerQualityContentId=${contentId}`;
+    const res = await fetch(
+      `${baseUrl}/strategy${strategyU}/v2.4?${params}`
+      ,{headers}
+    )
+    if (!res.ok) throw new Error(`HTTP ${res.status}`)
+
+    const ab = await res.arrayBuffer(), data = await mr(ab);
+    let url = decodeURIComponent(data?.data?.url ?? '');
+    if (!url) {
+      return {
+        success: false,
+        url: '',
+        source: 'migu'
+      }
+    }
+    // 移除查询参数后统一为 https 避免混合内容拦截，再按降级链升级并探测可用性
+    url = (url.split('?')[0] as string).replace(/^http:\/\//, 'https://');
+    const { url: finalUrl, quality: actualQuality } = await resolveAvailableUrl(url, toneFlag)
+
+    return {
+      success: true,
+      url: finalUrl,
+      // 实际提供的音质（高音质资源缺失时会低于请求值）
+      quality: actualQuality,
+      source: 'migu'
+    }
+  } catch (err: any) {
+    console.error('[migu/playurl.get] 获取播放链接失败:', err)
+    throw createError({
+      statusCode: err.statusCode || 500,
+      message: err.message || 'Internal Server Error'
+    })
+  }
+})