通過AI寫了個訂閲批量換host的脚本

這是免流一般用到的，可以在機場後臺整個API來自定義客戶需求，本站API地址為：https://blog.yariaa.lol/Api/Change_Host.php?url=你的訂閲地址&host=修改的地址

PHP版本如下：

<?php
function fetch_data($url) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch, CURLOPT_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS); // 只允許 HTTP/HTTPS
    curl_setopt($ch, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTP | CURLPROTO_HTTPS); // 只允許 HTTP/HTTPS 重定向
    $response = curl_exec($ch);
    if ($response === false) {
        throw new Exception("Failed to fetch data from URL: " . curl_error($ch));
    }
    curl_close($ch);
    return $response;
}

function decode_base64($data) {
    $decoded_data = base64_decode($data, true);
    if ($decoded_data === false) {
        throw new Exception("Failed to decode Base64 data.");
    }
    return $decoded_data;
}

function process_line($line, $new_host) {
    if (!preg_match('/^(.*:\/\/)(.*)$/', $line, $matches)) {
        return null;
    }

    $node_type = $matches[1];  // 協議類型（如 vmess://）
    $node_base64 = $matches[2];  // Base64 部分

    // 解碼 Base64 部分
    $data_json = decode_base64($node_base64);

    // 解析 JSON 數據
    $data = json_decode($data_json, true);
    if ($data === null) {
        throw new Exception("Invalid JSON data.");
    }

    // 驗證 JSON 結構
    if (!isset($data['host']) || !isset($data['port'])) {
        throw new Exception("Invalid JSON structure.");
    }

    // 修改 host 字段
    $data['host'] = $new_host;

    // 將修改後的 JSON 重新編碼為 Base64
    $modified_json = json_encode($data, JSON_UNESCAPED_UNICODE);  // 確保中文字符正常顯示
    $modified_base64 = base64_encode($modified_json);

    // 生成新的節點鏈接
    return $node_type . $modified_base64 . "\n";
}

function change_host($url, $new_host) {
    try {
        // 獲取數據
        $response = fetch_data($url);

        // Base64 解碼
        $decoded_data = decode_base64($response);

        $new_nodes = "";
        // 按行分割數據
        $lines = explode("\n", $decoded_data);
        foreach ($lines as $line) {
            try {
                $new_node = process_line($line, $new_host);
                if ($new_node !== null) {
                    $new_nodes .= $new_node;
                }
            } catch (Exception $e) {
                error_log("Failed to process line: $line. Error: " . $e->getMessage());
            }
        }

        // 將所有新節點鏈接重新編碼為 Base64
        return base64_encode($new_nodes);
    } catch (Exception $e) {
        error_log("Error: " . $e->getMessage());
        return null;
    }
}

// 獲取輸入參數並驗證
$url = filter_input(INPUT_GET, 'url', FILTER_SANITIZE_URL);
$new_host = filter_input(INPUT_GET, 'host', FILTER_SANITIZE_STRING);

if (empty($url) || empty($new_host)) {
    echo "URL and host parameters are required.\n";
    exit;
}

if (!preg_match('/^https?:\/\/[^\s]+$/', $url)) {
    echo "Invalid URL format.\n";
    exit;
}

if (!preg_match('/^[a-zA-Z0-9.-]+$/', $new_host)) {
    echo "Invalid host format.\n";
    exit;
}

// 執行並輸出結果
$result = change_host($url, $new_host);
if ($result !== null) {
    echo htmlspecialchars($result, ENT_QUOTES, 'UTF-8');
}