main.go(檔案已創建)
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| 1 | + | package main | |
| 2 | + | ||
| 3 | + | import ( | |
| 4 | + | "fmt" | |
| 5 | + | "io" | |
| 6 | + | "log" | |
| 7 | + | "net/http" | |
| 8 | + | "net/http/cookiejar" | |
| 9 | + | "net/url" | |
| 10 | + | "regexp" | |
| 11 | + | "strings" | |
| 12 | + | "sync" | |
| 13 | + | "time" | |
| 14 | + | ) | |
| 15 | + | ||
| 16 | + | // 配置常量 | |
| 17 | + | const ( | |
| 18 | + | BasePath = "/edge-aac/903hd" | |
| 19 | + | ServerPort = ":8080" | |
| 20 | + | ) | |
| 21 | + | ||
| 22 | + | // ProxyServer 代理服务器结构 (帶狀態管理) | |
| 23 | + | type ProxyServer struct { | |
| 24 | + | jar *cookiejar.Jar | |
| 25 | + | cookieExpiration time.Time | |
| 26 | + | upstreamHost string | |
| 27 | + | mu sync.RWMutex | |
| 28 | + | } | |
| 29 | + | ||
| 30 | + | // NewProxyServer 创建新的代理服务器 | |
| 31 | + | func NewProxyServer() *ProxyServer { | |
| 32 | + | jar, _ := cookiejar.New(nil) | |
| 33 | + | return &ProxyServer{ | |
| 34 | + | jar: jar, | |
| 35 | + | cookieExpiration: time.Now(), // 設置為當前時間，以觸發首次請求時立即獲取 | |
| 36 | + | } | |
| 37 | + | } | |
| 38 | + | ||
| 39 | + | // ensureValidCookies 確保 Cookie 有效，如果過期則刷新 | |
| 40 | + | func (ps *ProxyServer) ensureValidCookies() error { | |
| 41 | + | ps.mu.RLock() | |
| 42 | + | isExpired := time.Now().After(ps.cookieExpiration) | |
| 43 | + | ps.mu.RUnlock() | |
| 44 | + | ||
| 45 | + | if isExpired { | |
| 46 | + | log.Println("Cookie expired or not yet fetched, refreshing...") | |
| 47 | + | ps.mu.Lock() | |
| 48 | + | defer ps.mu.Unlock() | |
| 49 | + | ||
| 50 | + | if time.Now().After(ps.cookieExpiration) { | |
| 51 | + | if err := ps.refreshCookies(); err != nil { | |
| 52 | + | log.Printf("Failed to refresh cookies: %v", err) | |
| 53 | + | return err | |
| 54 | + | } | |
| 55 | + | log.Println("Cookies refreshed successfully.") | |
| 56 | + | } | |
| 57 | + | } | |
| 58 | + | return nil | |
| 59 | + | } | |
| 60 | + | ||
| 61 | + | // refreshCookies 執行完整的 Cookie 獲取和解析流程 (已按新邏輯修改) | |
| 62 | + | func (ps *ProxyServer) refreshCookies() error { | |
| 63 | + | // --- 步驟 1 & 2: 獲取 liveJsUrl --- | |
| 64 | + | liveJsURL, err := getLiveJsURL("https://www.881903.com/live/903") | |
| 65 | + | if err != nil { | |
| 66 | + | return err | |
| 67 | + | } | |
| 68 | + | ||
| 69 | + | // --- 步驟 3: 獲取 302 回應 --- | |
| 70 | + | resp302, err := get302Response(liveJsURL) | |
| 71 | + | if err != nil { | |
| 72 | + | return err | |
| 73 | + | } | |
| 74 | + | defer resp302.Body.Close() | |
| 75 | + | ||
| 76 | + | // --- 步驟 4: 訪問重定向地址以獲取真正的授權 Cookie --- | |
| 77 | + | redirectURL, err := resp302.Location() | |
| 78 | + | if err != nil { | |
| 79 | + | return fmt.Errorf("failed to get redirect location: %w", err) | |
| 80 | + | } | |
| 81 | + | ||
| 82 | + | respFromRedirect, err := http.Get(redirectURL.String()) | |
| 83 | + | if err != nil { | |
| 84 | + | return fmt.Errorf("failed to visit redirect URL: %w", err) | |
| 85 | + | } | |
| 86 | + | defer respFromRedirect.Body.Close() | |
| 87 | + | ||
| 88 | + | cookies := respFromRedirect.Cookies() | |
| 89 | + | if len(cookies) == 0 { | |
| 90 | + | return fmt.Errorf("no cookies found in redirect response") | |
| 91 | + | } | |
| 92 | + | ||
| 93 | + | // --- 按照新邏輯設置狀態 --- | |
| 94 | + | ||
| 95 | + | // 1. 清空舊的 Jar 並設置新的 Cookies | |
| 96 | + | ps.jar, _ = cookiejar.New(nil) | |
| 97 | + | ps.jar.SetCookies(redirectURL, cookies) | |
| 98 | + | ||
| 99 | + | // 2. 將 Upstream Host 設置為 redirectURL 的 Host | |
| 100 | + | ps.upstreamHost = redirectURL.Host | |
| 101 | + | log.Printf("Upstream host set to: %s", ps.upstreamHost) | |
| 102 | + | ||
| 103 | + | // 3. 將過期時間設置為當前時間 + 24 小時 | |
| 104 | + | ps.cookieExpiration = time.Now().Add(24 * time.Hour) | |
| 105 | + | log.Printf("New cookie expiration set to: %s", ps.cookieExpiration.Format(time.RFC3339)) | |
| 106 | + | ||
| 107 | + | return nil | |
| 108 | + | } | |
| 109 | + | ||
| 110 | + | // proxyRequest 處理代理請求的核心邏輯 | |
| 111 | + | func (ps *ProxyServer) proxyRequest(w http.ResponseWriter, r *http.Request) { | |
| 112 | + | if err := ps.ensureValidCookies(); err != nil { | |
| 113 | + | http.Error(w, fmt.Sprintf("Internal Server Error: %v", err), http.StatusInternalServerError) | |
| 114 | + | return | |
| 115 | + | } | |
| 116 | + | ||
| 117 | + | ps.mu.RLock() | |
| 118 | + | upstreamHost := ps.upstreamHost | |
| 119 | + | ps.mu.RUnlock() | |
| 120 | + | ||
| 121 | + | targetURL, err := ps.buildTargetURL(r.URL.Path, upstreamHost) | |
| 122 | + | if err != nil { | |
| 123 | + | http.Error(w, err.Error(), http.StatusNotFound) | |
| 124 | + | return | |
| 125 | + | } | |
| 126 | + | ||
| 127 | + | log.Printf("Proxying request for %s to %s", r.URL.Path, targetURL) | |
| 128 | + | ||
| 129 | + | client := &http.Client{ | |
| 130 | + | Jar: ps.jar, | |
| 131 | + | Timeout: 30 * time.Second, | |
| 132 | + | } | |
| 133 | + | proxyReq, err := http.NewRequest(r.Method, targetURL, nil) | |
| 134 | + | if err != nil { | |
| 135 | + | http.Error(w, "Failed to create proxy request", http.StatusInternalServerError) | |
| 136 | + | return | |
| 137 | + | } | |
| 138 | + | ||
| 139 | + | resp, err := client.Do(proxyReq) | |
| 140 | + | if err != nil { | |
| 141 | + | http.Error(w, fmt.Sprintf("Proxy request failed: %v", err), http.StatusBadGateway) | |
| 142 | + | return | |
| 143 | + | } | |
| 144 | + | defer resp.Body.Close() | |
| 145 | + | ||
| 146 | + | enableCORS(w) | |
| 147 | + | for key, values := range resp.Header { | |
| 148 | + | for _, value := range values { | |
| 149 | + | w.Header().Add(key, value) | |
| 150 | + | } | |
| 151 | + | } | |
| 152 | + | ||
| 153 | + | body, err := io.ReadAll(resp.Body) | |
| 154 | + | if err != nil { | |
| 155 | + | http.Error(w, "Failed to read response", http.StatusInternalServerError) | |
| 156 | + | return | |
| 157 | + | } | |
| 158 | + | ||
| 159 | + | w.WriteHeader(resp.StatusCode) | |
| 160 | + | w.Write(body) | |
| 161 | + | } | |
| 162 | + | ||
| 163 | + | // --- ServeHTTP 和其他輔助函數 (與之前版本相同) --- | |
| 164 | + | func (ps *ProxyServer) ServeHTTP(w http.ResponseWriter, r *http.Request) { | |
| 165 | + | if r.Method == http.MethodOptions { | |
| 166 | + | enableCORS(w) | |
| 167 | + | w.WriteHeader(http.StatusNoContent) | |
| 168 | + | return | |
| 169 | + | } | |
| 170 | + | ps.proxyRequest(w, r) | |
| 171 | + | } | |
| 172 | + | ||
| 173 | + | func (ps *ProxyServer) buildTargetURL(path string, host string) (string, error) { | |
| 174 | + | switch { | |
| 175 | + | case path == "/" || path == "/playlist.m3u8": | |
| 176 | + | return fmt.Sprintf("https://%s%s/chunks.m3u8", host, BasePath), nil | |
| 177 | + | case strings.HasPrefix(path, "/chunk/"): | |
| 178 | + | return fmt.Sprintf("https://%s%s/%s", host, BasePath, strings.TrimPrefix(path, "/chunk/")), nil | |
| 179 | + | default: | |
| 180 | + | // 增加對 .aac 文件的直接代理 | |
| 181 | + | if strings.HasSuffix(path, ".aac") { | |
| 182 | + | return fmt.Sprintf("https://%s%s%s", host, BasePath, path), nil | |
| 183 | + | } | |
| 184 | + | return "", fmt.Errorf("unsupported path: %s", path) | |
| 185 | + | } | |
| 186 | + | } | |
| 187 | + | ||
| 188 | + | func enableCORS(w http.ResponseWriter) { | |
| 189 | + | w.Header().Set("Access-Control-Allow-Origin", "*") | |
| 190 | + | } | |
| 191 | + | ||
| 192 | + | // --- Cookie 獲取輔助函數 (與之前版本相同) --- | |
| 193 | + | func getLiveJsURL(pageURL string) (string, error) { | |
| 194 | + | log.Println("Fetching liveJsUrl from", pageURL) | |
| 195 | + | resp, err := http.Get(pageURL) | |
| 196 | + | if err != nil { | |
| 197 | + | return "", err | |
| 198 | + | } | |
| 199 | + | defer resp.Body.Close() | |
| 200 | + | body, err := io.ReadAll(resp.Body) | |
| 201 | + | if err != nil { | |
| 202 | + | return "", err | |
| 203 | + | } | |
| 204 | + | re := regexp.MustCompile(`"liveJsUrl":"([^"]+)"`) | |
| 205 | + | matches := re.FindStringSubmatch(string(body)) | |
| 206 | + | if len(matches) < 2 { | |
| 207 | + | return "", fmt.Errorf("liveJsUrl not found") | |
| 208 | + | } | |
| 209 | + | log.Println("Found liveJsUrl") | |
| 210 | + | return matches[1], nil | |
| 211 | + | } | |
| 212 | + | ||
| 213 | + | func get302Response(jsURL string) (*http.Response, error) { | |
| 214 | + | log.Println("Fetching 302 redirect from", jsURL) | |
| 215 | + | client := &http.Client{ | |
| 216 | + | CheckRedirect: func(req *http.Request, via []*http.Request) error { | |
| 217 | + | return http.ErrUseLastResponse | |
| 218 | + | }, | |
| 219 | + | } | |
| 220 | + | req, err := http.NewRequest("GET", jsURL, nil) | |
| 221 | + | if err != nil { | |
| 222 | + | return nil, err | |
| 223 | + | } | |
| 224 | + | req.Header.Set("accept", "*/*") | |
| 225 | + | req.Header.Set("referer", "https://www.881903.com/live/903") | |
| 226 | + | req.Header.Set("user-agent", "Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/136.0.0.0 Safari/537.36") | |
| 227 | + | resp, err := client.Do(req) | |
| 228 | + | if urlErr, ok := err.(*url.Error); ok && urlErr.Err == http.ErrUseLastResponse { | |
| 229 | + | return resp, nil | |
| 230 | + | } | |
| 231 | + | return resp, err | |
| 232 | + | } | |
| 233 | + | ||
| 234 | + | // --- Main 函數 (與之前版本相同) --- | |
| 235 | + | func main() { | |
| 236 | + | proxy := NewProxyServer() | |
| 237 | + | ||
| 238 | + | log.Println("Performing initial cookie fetch...") | |
| 239 | + | if err := proxy.ensureValidCookies(); err != nil { | |
| 240 | + | log.Fatalf("Initial cookie fetch failed: %v. Server cannot start.", err) | |
| 241 | + | } | |
| 242 | + | ||
| 243 | + | http.Handle("/", proxy) | |
| 244 | + | log.Printf("Starting HLS proxy server on port %s", ServerPort) | |
| 245 | + | log.Printf("Access playlist at: http://localhost%s/playlist.m3u8", ServerPort) | |
| 246 | + | if err := http.ListenAndServe(ServerPort, nil); err != nil { | |
| 247 | + | log.Fatal("Server failed to start:", err) | |
| 248 | + | } | |
| 249 | + | } | |
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