From d209934e69c0ef48a55bd2deed4f04e68e2b75b6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E9=99=88=E6=80=9D=E6=B5=B7?= <1464576565@qq.com>
Date: Mon, 9 Feb 2026 14:21:53 +0800
Subject: [PATCH] 111

---
 backend/routes/videos.js | 48 ++++++++++++++++++++++++++++++----------
 1 file changed, 36 insertions(+), 12 deletions(-)

diff --git a/backend/routes/videos.js b/backend/routes/videos.js
index e69cb02..c526f5c 100644
--- a/backend/routes/videos.js
+++ b/backend/routes/videos.js
@@ -64,7 +64,8 @@ async function getVideoCoverFromVod(fileId) {
 // 生成VOD防盗链签名URL
 // 根据腾讯云文档：https://cloud.tencent.com/document/product/266/14047
 // 签名算法：sign = MD5(KEY + Dir + t + us)
-function generateSignedUrl(videoUrl, signKey, expirationTime = 86400) {
+// enableLog: 控制是否输出日志，默认从环境变量 VOD_SIGN_LOG 读取（值为'true'时启用），或直接传入 true/false
+function generateSignedUrl(videoUrl, signKey, expirationTime = 86400, requestDomain = '', enableLog = process.env.VOD_SIGN_LOG === 'true') {
   if (!signKey || !videoUrl) {
     return videoUrl;
   }
@@ -80,7 +81,8 @@ function generateSignedUrl(videoUrl, signKey, expirationTime = 86400) {
     const dir = pathname.substring(0, lastSlashIndex + 1);
 
     // 计算过期时间戳（十六进制小写）
-    const expirationTimestamp = Math.floor(Date.now() / 1000) + expirationTime;
+    const now = Date.now();
+    const expirationTimestamp = Math.floor(now / 1000) + expirationTime;
     const t = expirationTimestamp.toString(16).toLowerCase();
 
     // 生成随机字符串（10位）
@@ -93,15 +95,34 @@ function generateSignedUrl(videoUrl, signKey, expirationTime = 86400) {
     // 拼接最终URL，参数顺序必须是：t, us, sign
     const signedUrl = `${videoUrl}?t=${t}&us=${us}&sign=${sign}`;
 
-    // console.log('=== VOD签名调试信息 ===');
-    // console.log('原始URL:', videoUrl);
-    // console.log('Dir路径:', dir);
-    // console.log('过期时间t:', t);
-    // console.log('随机字符串us:', us);
-    // console.log('签名字符串:', signString);
-    // console.log('MD5签名:', sign);
-    // console.log('最终URL:', signedUrl);
-    // console.log('=====================');
+    // 如果启用日志输出，则输出详细信息
+    if (enableLog) {
+      const formatTime = (timestamp) => {
+        return new Date(timestamp).toLocaleString('zh-CN', {
+          timeZone: 'Asia/Shanghai',
+          year: 'numeric',
+          month: '2-digit',
+          day: '2-digit',
+          hour: '2-digit',
+          minute: '2-digit',
+          second: '2-digit',
+          hour12: false
+        });
+      };
+
+      const videoDomain = `${url.protocol}//${url.host}`;
+
+      console.log('=== VOD签名信息 ===');
+      console.log('当前请求域名:', requestDomain || '未提供');
+      console.log('视频URL域名:', videoDomain);
+      console.log('当前时间:', formatTime(now));
+      console.log('当前时间戳:', Math.floor(now / 1000));
+      console.log('链接过期时间:', formatTime(expirationTimestamp * 1000));
+      console.log('有效时长:', expirationTime, '秒 (', Math.floor(expirationTime / 3600), '小时)');
+      console.log('原始URL:', videoUrl);
+      console.log('签名后URL:', signedUrl);
+      console.log('==================\n');
+    }
 
     return signedUrl;
   } catch (error) {
@@ -245,6 +266,9 @@ const upload = multer({
 // 获取所有活跃视频（前台使用）
 router.get('/public', async (req, res) => {
   try {
+    // 获取当前请求的域名
+    const requestDomain = `${req.protocol}://${req.get('host')}`;
+
     // 获取VOD配置以获取签名密钥
     const [configs] = await db.query('SELECT sign_key FROM vod_config LIMIT 1');
     const signKey = configs.length > 0 ? configs[0].sign_key : null;
@@ -256,7 +280,7 @@ router.get('/public', async (req, res) => {
     // 为每个视频URL生成签名
     const videosWithSignedUrls = videos.map(video => {
       if (video.video_url && signKey) {
-        video.video_url = generateSignedUrl(video.video_url, signKey);
+        video.video_url = generateSignedUrl(video.video_url, signKey, 86400, requestDomain);
       }
       return video;
     });