Merge branch 'pr-213' into dev
This commit is contained in:
@@ -0,0 +1,39 @@
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/**
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* 代理接口共享工具函数
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* 用于构建标准化的 CORS 响应头,避免各代理路由中的重复代码。
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*/
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/**
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* 构建标准的代理流式响应头 (用于 ts 分片、密钥、二进制流等)
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* 包含 CORS、Accept-Ranges 和 Content-Length 等标准头。
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*/
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export function buildProxyStreamHeaders(
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contentType: string,
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contentLength?: string | null
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): Headers {
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const headers = new Headers();
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headers.set('Content-Type', contentType);
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headers.set('Access-Control-Allow-Origin', '*');
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headers.set('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
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headers.set('Access-Control-Allow-Headers', 'Content-Type, Range, Origin, Accept');
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headers.set('Accept-Ranges', 'bytes');
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headers.set('Access-Control-Expose-Headers', 'Content-Length, Content-Range');
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if (contentLength) {
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headers.set('Content-Length', contentLength);
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}
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return headers;
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}
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/**
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* 构建标准的代理 M3U8 播放列表响应头
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*/
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export function buildProxyM3u8Headers(contentType?: string): Headers {
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const headers = new Headers();
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headers.set('Content-Type', contentType || 'application/vnd.apple.mpegurl');
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headers.set('Access-Control-Allow-Origin', '*');
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headers.set('Access-Control-Allow-Methods', 'GET, POST, OPTIONS');
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headers.set('Access-Control-Allow-Headers', 'Content-Type, Range, Origin, Accept');
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headers.set('Cache-Control', 'no-cache');
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headers.set('Access-Control-Expose-Headers', 'Content-Length, Content-Range');
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return headers;
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}
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@@ -0,0 +1,94 @@
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import dns from 'dns';
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/**
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* 判断 IP 地址是否为内网/本地私有地址
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* 覆盖 IPv4 和 IPv6,彻底杜绝所有变体绕过。
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*/
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export function isPrivateIP(ip: string): boolean {
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// IPv4 私有地址和环回地址
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if (ip.includes('.')) {
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const parts = ip.split('.').map(Number);
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if (parts.length !== 4) return false;
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return (
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parts[0] === 10 || // 10.x.x.x
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parts[0] === 127 || // 127.x.x.x (Loopback)
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(parts[0] === 172 && parts[1] >= 16 && parts[1] <= 31) || // 172.16.x.x - 172.31.x.x
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(parts[0] === 192 && parts[1] === 168) || // 192.168.x.x
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(parts[0] === 169 && parts[1] === 254) || // 169.254.x.x (Link-local)
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parts[0] === 0 // 0.x.x.x ("This network")
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);
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}
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// IPv6 私有地址和环回地址
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if (ip.includes(':')) {
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// ::1 环回地址 (Loopback)
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if (ip === '::1' || ip === '0:0:0:0:0:0:0:1') return true;
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// 0::0 / :: 未指定地址
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if (ip === '::' || ip === '0:0:0:0:0:0:0:0') return true;
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const lowerIp = ip.toLowerCase();
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// IPv4 映射到 IPv6 的地址 (例如 ::ffff:127.0.0.1)
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if (lowerIp.startsWith('::ffff:')) {
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return isPrivateIP(lowerIp.substring(7));
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}
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// 唯一本地地址 (Unique Local Addresses, fc00::/7)
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if (lowerIp.startsWith('fc') || lowerIp.startsWith('fd')) return true;
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// 链路本地地址 (Link-Local Addresses, fe80::/10)
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if (lowerIp.startsWith('fe8') || lowerIp.startsWith('fe9') || lowerIp.startsWith('fea') || lowerIp.startsWith('feb')) return true;
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}
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return false;
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}
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/**
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* 校验代理 URL 是否安全 (防止 SSRF / DNS 重绑定漏洞)
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* 只在 Node.js 服务端运行。
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*/
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export async function validateProxyUrlServerSide(urlStr: string): Promise<boolean> {
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if (!urlStr) return false;
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try {
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const parsed = new URL(urlStr);
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// 1. 协议检查
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if (parsed.protocol !== 'http:' && parsed.protocol !== 'https:') {
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return false;
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}
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// 2. 剥离认证信息防止混淆
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if (parsed.username || parsed.password) {
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return false;
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}
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let { hostname } = parsed;
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// 清洗 IPv6 括号边界
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if (hostname.startsWith('[') && hostname.endsWith(']')) {
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hostname = hostname.substring(1, hostname.length - 1);
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}
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// 3. DNS 真实解析 (获取底层物理 IP)
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// 这一步能彻底打碎各种形式的短格式 IP (127.1)、八/十六进制 IP (0x7f.0.0.1)、或者指向 127.0.0.1 的恶意外部域名 DNS 重绑定。
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const lookupResult = await dns.promises.lookup(hostname);
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if (!lookupResult || !lookupResult.address) {
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return false; // 解析不出 IP 则拒绝
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}
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// 4. 对物理 IP 进行内网校验
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if (isPrivateIP(lookupResult.address)) {
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console.warn(`[SSRF 防护] 拦截到尝试访问内部网络的请求 URL: ${urlStr} (解析出的底层 IP: ${lookupResult.address})`);
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return false;
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}
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return true;
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} catch (error) {
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// 凡是报错(无论是 URL 解析失败,还是 DNS 解析失败,还是域名不存在),均作为不安全拒绝
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console.warn(`[SSRF 防护] URL解析失败或不合法, 拒绝代理请求: ${urlStr}`);
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return false;
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}
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}
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+68
-58
@@ -155,7 +155,7 @@ export function processVideoUrl(originalUrl: string): string {
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*/
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export async function getVideoResolutionFromM3u8(
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m3u8Url: string,
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timeoutMs = 4000
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timeoutMs = 6000
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): Promise<{
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quality: string; // 如720p、1080p等
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loadSpeed: string; // 自动转换为KB/s或MB/s
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@@ -185,11 +185,55 @@ export async function getVideoResolutionFromM3u8(
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// 固定使用hls.js加载
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const hls = new Hls();
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// 设置超时处理 - 使用传入的超时时间
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const timeout = setTimeout(() => {
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let actualLoadSpeed = '未知';
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let hasSpeedCalculated = false;
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let hasMetadataLoaded = false;
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let estimatedBitrate = 0; // 估算的码率(bps)
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// 提取核心返回逻辑供 resolve 和 timeout 共同调用
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const resolveCurrentState = () => {
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const width = video.videoWidth;
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const quality =
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width >= 3840
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? '4K'
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: width >= 2560
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? '2K'
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: width >= 1920
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? '1080p'
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: width >= 1280
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? '720p'
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: width >= 854
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? '480p'
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: width > 0
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? 'SD'
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: '未知';
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const bitrateStr = estimatedBitrate > 0
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? estimatedBitrate >= 1000000
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? `${(estimatedBitrate / 1000000).toFixed(1)} Mbps`
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: `${Math.round(estimatedBitrate / 1000)} Kbps`
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: '未知';
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hls.destroy();
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video.remove();
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reject(new Error('Timeout loading video metadata'));
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resolve({
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quality,
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loadSpeed: actualLoadSpeed,
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pingTime: Math.round(pingTime),
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bitrate: bitrateStr,
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});
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};
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// 设置超时处理 - 如果部分数据已拿到,则宽容返回
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const timeout = setTimeout(() => {
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if (hasMetadataLoaded || hasSpeedCalculated) {
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resolveCurrentState();
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} else {
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hls.destroy();
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video.remove();
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reject(new Error('Timeout loading video metadata'));
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}
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}, timeoutMs);
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video.onerror = () => {
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@@ -199,67 +243,16 @@ export async function getVideoResolutionFromM3u8(
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reject(new Error('Failed to load video metadata'));
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};
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let actualLoadSpeed = '未知';
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let hasSpeedCalculated = false;
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let hasMetadataLoaded = false;
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let estimatedBitrate = 0; // 估算的码率(bps)
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let fragmentStartTime = 0;
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// 检查是否可以返回结果
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// 检查是否可以相互满足要求
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const checkAndResolve = () => {
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if (
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hasMetadataLoaded &&
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(hasSpeedCalculated || actualLoadSpeed !== '未知')
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) {
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clearTimeout(timeout);
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const width = video.videoWidth;
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if (width && width > 0) {
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hls.destroy();
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video.remove();
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// 根据视频宽度判断视频质量等级,使用经典分辨率的宽度作为分割点
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const quality =
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width >= 3840
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? '4K' // 4K: 3840x2160
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: width >= 2560
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? '2K' // 2K: 2560x1440
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: width >= 1920
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? '1080p' // 1080p: 1920x1080
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: width >= 1280
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? '720p' // 720p: 1280x720
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: width >= 854
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? '480p'
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: 'SD'; // 480p: 854x480
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// 格式化码率
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const bitrateStr = estimatedBitrate > 0
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? estimatedBitrate >= 1000000
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? `${(estimatedBitrate / 1000000).toFixed(1)} Mbps`
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: `${Math.round(estimatedBitrate / 1000)} Kbps`
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: '未知';
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resolve({
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quality,
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loadSpeed: actualLoadSpeed,
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pingTime: Math.round(pingTime),
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bitrate: bitrateStr,
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});
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} else {
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// webkit 无法获取尺寸,直接返回
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const bitrateStr = estimatedBitrate > 0
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? estimatedBitrate >= 1000000
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? `${(estimatedBitrate / 1000000).toFixed(1)} Mbps`
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: `${Math.round(estimatedBitrate / 1000)} Kbps`
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: '未知';
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resolve({
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quality: '未知',
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loadSpeed: actualLoadSpeed,
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pingTime: Math.round(pingTime),
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bitrate: bitrateStr,
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});
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}
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resolveCurrentState();
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}
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};
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@@ -309,7 +302,7 @@ export async function getVideoResolutionFromM3u8(
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});
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// 为分片请求添加时间戳参数破除浏览器缓存
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hls.config.xhrSetup = function(xhr: XMLHttpRequest, url: string) {
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hls.config.xhrSetup = function (xhr: XMLHttpRequest, url: string) {
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const urlWithTimestamp = url.includes('?')
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? `${url}&_t=${Date.now()}`
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: `${url}?_t=${Date.now()}`;
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@@ -323,6 +316,22 @@ export async function getVideoResolutionFromM3u8(
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hls.on(Hls.Events.ERROR, (event: any, data: any) => {
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console.error('HLS错误:', data);
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if (data.fatal) {
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const statusCode = data.response?.code || data.response?.status;
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// 防止 415 代理兜底熔断导致正常的二进制源在优选逻辑中被剔除
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if (statusCode === 415 && (m3u8Url.includes('/api/proxy-m3u8') || m3u8Url.includes('/api/proxy/vod/m3u8'))) {
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console.log('[测速] 测速通道嗅探到这是底层的媒体流文件,免测速通过');
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clearTimeout(timeout);
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hls.destroy();
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video.remove();
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resolve({
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quality: '原生画质',
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loadSpeed: '直连',
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pingTime: 10,
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bitrate: '未知',
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});
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return;
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}
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clearTimeout(timeout);
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hls.destroy();
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video.remove();
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@@ -397,3 +406,4 @@ export function base58Decode(encoded: string): string {
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// 在 Node.js 环境中使用 Buffer
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return Buffer.from(bytes).toString('utf-8');
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}
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