115 lines
3.6 KiB
TypeScript
115 lines
3.6 KiB
TypeScript
/**
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* Bilibili 播放链接获取接口
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* 代码参考 https://github.com/rio4raki/Bilibili-audio-extraction 优化
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* 采用 platform=html5 获取对浏览器 <audio> 标签兼容性最好的直链
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* 同时转发客户端 IP，解决海外服务器获取到错误 CDN 节点导致访问慢的问题
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*/
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import { defineEventHandler, getQuery } from 'h3'
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import { createApiError } from '~~/server/utils/apiError'
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import { SERVER_ERROR_CODES } from '~~/server/config/constants'
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import { getClientIP } from '~~/server/utils/ip-utils'
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interface NoRefererPlayUrlRes {
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code: number
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message: string
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data: {
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durl: [
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{
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url: string
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}
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]
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}
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}
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export default defineEventHandler(async (event) => {
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const query = getQuery(event)
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const bvid = query.id as string
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const cid = query.cid as string
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if (!bvid) {
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throw createApiError(400, SERVER_ERROR_CODES.COMMON_INVALID_PARAMS, '缺少 id 参数')
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}
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// 提取客户端真实 IP，用于转发给 Bilibili 接口，以便分配最快 CDN 节点
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const clientIp = getClientIP(event)
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const headers: Record<string, string> = {
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Cookie: 'buvid3=0',
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Referer: 'https://www.bilibili.com/',
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'User-Agent':
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'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36'
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}
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if (clientIp !== 'unknown') {
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headers['X-Forwarded-For'] = clientIp
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headers['X-Real-IP'] = clientIp
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headers['Client-IP'] = clientIp
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}
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try {
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let finalCid = cid
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if (!finalCid) {
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const target_url = 'https://api.bilibili.com/x/web-interface/view'
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const resp1: any = await $fetch(target_url, {
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method: 'GET',
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params: { bvid },
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headers,
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timeout: 10000
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})
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if (!resp1?.data?.pages?.[0]?.cid) {
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console.error('[Bilibili] CID 获取失败，响应:', JSON.stringify(resp1).slice(0, 300))
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// 降级：去掉 Cookie 重试，部分场景 Cookie 反而触发风控
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try {
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const fallback: any = await $fetch(target_url, {
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method: 'GET',
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params: { bvid },
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headers: {
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Referer: 'https://www.bilibili.com/',
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'User-Agent': headers['User-Agent']
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},
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timeout: 10000
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})
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if (fallback?.data?.pages?.[0]?.cid) {
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finalCid = fallback.data.pages[0].cid
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} else {
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console.error('[Bilibili] 降级请求仍无 CID，响应:', JSON.stringify(fallback).slice(0, 300))
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throw new Error('获取 CID 失败')
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}
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} catch (fallbackErr: any) {
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throw new Error(`获取 CID 失败: ${fallbackErr?.message || '未知错误'}`)
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}
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} else {
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finalCid = resp1.data.pages[0].cid
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}
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}
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// 使用 platform=html5 参数绕过严格防盗链验证（允许前端使用 referrerpolicy="no-referrer"）
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const target_url2 = 'https://api.bilibili.com/x/player/playurl'
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const resp2 = await $fetch<NoRefererPlayUrlRes>(target_url2, {
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method: 'GET',
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params: {
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fnval: 1,
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platform: 'html5',
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high_quality: 1,
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bvid,
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cid: finalCid
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},
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headers,
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timeout: 10000
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})
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if (resp2.data?.durl?.length > 0) {
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const url = resp2.data.durl[0].url
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return { url, pay: false }
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} else {
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throw new Error(`获取歌曲链接失败: ${resp2.message || '未知错误'}`)
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}
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} catch (error: any) {
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console.error('Bilibili playurl error:', error)
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throw createApiError(500, SERVER_ERROR_CODES.BILIBILI_PLAYURL_FAILED, error.message || '获取 Bilibili 音频链接失败')
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}
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})
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