初始化

api/favicon/counter.dat

@@ -0,0 +1 @@
+3

api/favicon/index.php

@@ -0,0 +1,74 @@
+<?php
+
+$counter = intval(file_get_contents("counter.dat"));  
+     $_SESSION['#'] = true;  
+     $counter++;  
+     $fp = fopen("counter.dat","w");  
+     fwrite($fp, $counter);  
+     fclose($fp); 
+
+header('Content-Type: image/x-icon');
+
+if (!isset($_GET['url'])) {
+    header('HTTP/1.1 400 Bad Request');
+    exit('URL parameter is required');
+}
+
+$url = $_GET['url'];
+
+// 自动补全协议前缀
+if (!preg_match('/^https?:\/\//i', $url)) {
+    $url = 'https://' . $url;
+}
+
+if (!filter_var($url, FILTER_VALIDATE_URL)) {
+    header('HTTP/1.1 400 Bad Request');
+    exit('Invalid URL format');
+}
+
+$domain = parse_url($url, PHP_URL_HOST);
+$scheme = parse_url($url, PHP_URL_SCHEME);
+$faviconUrl = $scheme . '://' . $domain . '/favicon.ico';
+
+// 尝试获取favicon，最多重试3次
+$maxRetries = 3;
+$retryCount = 0;
+$data = null;
+$httpCode = 0;
+
+do {
+    $ch = curl_init($faviconUrl);
+     curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
+     curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
+     
+     // 根据协议设置SSL验证
+     if (parse_url($faviconUrl, PHP_URL_SCHEME) === 'https') {
+         curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
+     }
+     
+     curl_setopt($ch, CURLOPT_TIMEOUT, 5); // 5秒超时
+     curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 3); // 3秒连接超时
+    
+    $data = curl_exec($ch);
+    $httpCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
+    $error = curl_error($ch);
+    curl_close($ch);
+    
+    $retryCount++;
+    
+    if ($httpCode === 200 && !empty($data)) {
+        break;
+    }
+    
+    if ($retryCount < $maxRetries) {
+        sleep(1); // 等待1秒后重试
+    }
+} while ($retryCount < $maxRetries);
+
+if ($httpCode === 200 && !empty($data)) {
+    echo $data;
+} else {
+    header('HTTP/1.1 404 Not Found');
+    exit('Favicon not found: ' . ($error ?? 'Unknown error'));
+}
+?>