初次提交

2026-09-06 08:19:02 +08:00
commit 4ce4649aaf
1061 changed files with 337258 additions and 0 deletions
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+import { createHash } from 'node:crypto'
+
+// 重试函数
+const fetchWithRetry = async (url: string, options: any, maxRetries = 3): Promise<Response> => {
+  let lastError: Error
+
+  for (let attempt = 1; attempt <= maxRetries; attempt++) {
+    try {
+      console.log(`尝试获取图片 (${attempt}/${maxRetries}): ${url}`)
+
+      // 创建AbortController用于超时控制
+      const controller = new AbortController()
+      const timeoutId = setTimeout(() => controller.abort(), 10000) // 10秒超时
+
+      const response = await fetch(url, {
+        ...options,
+        signal: controller.signal
+      })
+
+      clearTimeout(timeoutId)
+
+      if (response.ok) {
+        console.log(`图片获取成功 (尝试 ${attempt})`)
+        return response
+      } else {
+        throw new Error(`HTTP ${response.status}: ${response.statusText}`)
+      }
+    } catch (error: any) {
+      lastError = error
+      console.warn(`图片获取失败 (尝试 ${attempt}/${maxRetries}):`, error.message)
+
+      // 如果不是最后一次尝试，等待一段时间后重试
+      if (attempt < maxRetries) {
+        const delay = Math.min(1000 * Math.pow(2, attempt - 1), 5000) // 指数退避，最大5秒
+        console.log(`等待 ${delay}ms 后重试...`)
+        await new Promise((resolve) => setTimeout(resolve, delay))
+      }
+    }
+  }
+
+  throw lastError
+}
+
+export default defineEventHandler(async (event) => {
+  const query = getQuery(event)
+  const imageUrl = query.url as string
+  const quality = query.quality as string
+
+  if (!imageUrl) {
+    throw createError({
+      statusCode: 400,
+      statusMessage: 'Missing image URL parameter'
+    })
+  }
+
+  try {
+    // 验证URL是否为有效的图片URL
+    const url = new URL(imageUrl)
+    if (!url.protocol.startsWith('http')) {
+      throw new Error('Invalid protocol')
+    }
+
+    // 确定 Referer
+    let referer = url.origin
+    // 针对 Bilibili 图片的特殊处理
+    if (url.hostname.includes('hdslb.com') || url.hostname.includes('bilibili.com')) {
+      referer = 'https://www.bilibili.com/'
+    }
+
+    // 优化的请求头
+    const headers = {
+      'User-Agent':
+        'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/120.0.0.0 Safari/537.36',
+      Accept: 'image/webp,image/apng,image/svg+xml,image/*,*/*;q=0.8',
+      'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8',
+      'Accept-Encoding': 'gzip, deflate, br',
+      'Sec-Fetch-Dest': 'image',
+      'Sec-Fetch-Mode': 'no-cors',
+      'Sec-Fetch-Site': 'cross-site',
+      Referer: referer
+    }
+
+    // 使用重试机制获取图片
+    const response = await fetchWithRetry(imageUrl, { headers })
+
+    // 检查内容类型
+    const contentType = response.headers.get('content-type')
+    if (!contentType || !contentType.startsWith('image/')) {
+      throw new Error('Response is not an image')
+    }
+
+    // 获取图片数据
+    const imageBuffer = await response.arrayBuffer()
+    const etag = `"${createHash('sha1').update(Buffer.from(imageBuffer)).digest('hex')}"`
+
+    if (getHeader(event, 'if-none-match') === etag) {
+      setResponseStatus(event, 304)
+      setHeader(event, 'ETag', etag)
+      setHeader(event, 'Cache-Control', 'public, max-age=86400, s-maxage=86400, stale-while-revalidate=604800')
+      setHeader(event, 'Access-Control-Allow-Origin', '*')
+      setHeader(event, 'Access-Control-Allow-Methods', 'GET, OPTIONS')
+      setHeader(event, 'Access-Control-Allow-Headers', 'Content-Type')
+      return ''
+    }
+
+    // 设置响应头
+    setHeader(event, 'Content-Type', contentType)
+    setHeader(event, 'ETag', etag)
+    setHeader(event, 'Cache-Control', 'public, max-age=86400, s-maxage=86400, stale-while-revalidate=604800')
+    setHeader(event, 'Access-Control-Allow-Origin', '*')
+    setHeader(event, 'Access-Control-Allow-Methods', 'GET, OPTIONS')
+    setHeader(event, 'Access-Control-Allow-Headers', 'Content-Type')
+
+    console.log(`图片代理成功: ${imageUrl}, 大小: ${imageBuffer.byteLength} bytes`)
+    return new Uint8Array(imageBuffer)
+  } catch (error: any) {
+    console.error('Image proxy error:', {
+      url: imageUrl,
+      error: error.message,
+      code: error.code,
+      cause: error.cause
+    })
+
+    // 提供更详细的错误信息
+    let errorMessage = 'Failed to fetch image'
+    if (error.code === 'ECONNRESET') {
+      errorMessage = '网络连接被重置，请稍后重试'
+    } else if (error.code === 'ETIMEDOUT' || error.name === 'AbortError') {
+      errorMessage = '请求超时，请检查网络连接'
+    } else if (error.code === 'ENOTFOUND') {
+      errorMessage = '无法解析域名，请检查URL是否正确'
+    } else if (error.message.includes('HTTP')) {
+      errorMessage = `服务器返回错误: ${error.message}`
+    }
+
+    throw createError({
+      statusCode: 500,
+      statusMessage: `${errorMessage}: ${error.message}`
+    })
+  }
+})