Subversion Repositories munaweb

<?php
/**
 * AJAX Cross Domain (PHP) Proxy 0.8
 * Copyright (C) 2016 Iacovos Constantinou (https://github.com/softius)
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
 * GNU General Public License for more details.
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
/**
 * Enables or disables filtering for cross domain requests.
 * Recommended value: true
 */
define('CSAJAX_FILTERS', true);
/**
 * If set to true, $valid_requests should hold only domains i.e. a.example.com, b.example.com, usethisdomain.com
 * If set to false, $valid_requests should hold the whole URL ( without the parameters ) i.e. http://example.com/this/is/long/url/
 * Recommended value: false (for security reasons - do not forget that anyone can access your proxy)
 */
define('CSAJAX_FILTER_DOMAIN', true);
/**
 * Enables or disables Expect: 100-continue header. Some webservers don't
 * handle this header correctly.
 * Recommended value: false
 */
define('CSAJAX_SUPPRESS_EXPECT', false);
/**
 * Set debugging to true to receive additional messages - really helpful on development
 */
define('CSAJAX_DEBUG', false);
/**
 * A set of valid cross domain requests
 */
$valid_requests = array(
                'api.ebay.com',
                'open.api.ebay.com',
                'secure.shippingapis.com',
                'muna-trading.myshopify.com',
                'svcs.ebay.com',
                'api.discogs.com',
                'onlinetools.ups.com'
);
/**
 * Set extra multiple options for cURL
 * Could be used to define CURLOPT_SSL_VERIFYPEER & CURLOPT_SSL_VERIFYHOST for HTTPS
 * Also to overwrite any other options without changing the code
 * See http://php.net/manual/en/function.curl-setopt-array.php
 */
$curl_options = array(
    // CURLOPT_SSL_VERIFYPEER => false,
    // CURLOPT_SSL_VERIFYHOST => 2,
);
/**
 * Decode POST parameters after building the http array. Send Header X-DECODE-PARAMS
 */
$decodeFlag = false;
/**
 * Do not decode X-Proxy-Url. Send Header X-LEAVE-ENCODED
 */
$leaveEncodedFlag = false;

/* * * STOP EDITING HERE UNLESS YOU KNOW WHAT YOU ARE DOING * * */
// identify request headers
$request_headers = array( );
foreach ($_SERVER as $key => $value) {
    if (strpos($key, 'HTTP_') === 0  ||  strpos($key, 'CONTENT_') === 0) {
        $headername = str_replace('_', ' ', str_replace('HTTP_', '', $key));
        $headername = str_replace(' ', '-', ucwords(strtolower($headername)));
        if (!in_array($headername, array( 'Host', 'X-Proxy-Url' ))) {
                if ($headername == "X-Authorization") {
                        $headername = "Authorization";
                } else if ($headername == "X-Decode-Params") {
                $decodeFlag = true;
                continue;
                } else if ($headername == "X-Leave-Encoded") {
                $leaveEncodedFlag = true;
                continue;
                }

            $value = authReplace($value);

            $request_headers[] = "$headername: $value";
        }
    }
}
// identify request method, url and params
$request_method = $_SERVER['REQUEST_METHOD'];
if ('GET' == $request_method) {
    $request_params = $_GET;
} elseif ('POST' == $request_method) {
    $request_params = $_POST;
    if (empty($request_params)) {
        $data = file_get_contents('php://input');
        if (!empty($data)) {
            $request_params = $data;
        }
    }
} elseif ('PUT' == $request_method || 'DELETE' == $request_method) {
    $request_params = file_get_contents('php://input');
} else {
    $request_params = null;
}
// Get URL from `csurl` in GET or POST data, before falling back to X-Proxy-URL header.
if (isset($_REQUEST['csurl'])) {
    $request_url = urldecode($_REQUEST['csurl']);
} elseif (isset($_SERVER['HTTP_X_PROXY_URL'])) {
    if ($leaveEncodedFlag) {
        $request_url = $_SERVER['HTTP_X_PROXY_URL'];
    } else {
        $request_url = urldecode($_SERVER['HTTP_X_PROXY_URL']);
    }
} else {
    header($_SERVER['SERVER_PROTOCOL'] . ' 404 Not Found');
    header('Status: 404 Not Found');
    $_SERVER['REDIRECT_STATUS'] = 404;
    exit;
}

$request_url = authReplace($request_url);

$p_request_url = parse_url($request_url);
// csurl may exist in GET request methods
if (is_array($request_params) && array_key_exists('csurl', $request_params)) {
    unset($request_params['csurl']);
}
// ignore requests for proxy :)
if (preg_match('!' . $_SERVER['SCRIPT_NAME'] . '!', $request_url) || empty($request_url) || count($p_request_url) == 1) {
    csajax_debug_message('Invalid request - make sure that csurl variable is not empty');
    exit;
}
// check against valid requests
if (CSAJAX_FILTERS) {
    $parsed = $p_request_url;
    if (CSAJAX_FILTER_DOMAIN) {
        if (!in_array($parsed['host'], $valid_requests)) {
            csajax_debug_message('Invalid domain - ' . $parsed['host'] . ' is not included in valid requests');
            exit;
        }
    } else {
        $check_url = isset($parsed['scheme']) ? $parsed['scheme'] . '://' : '';
        $check_url .= isset($parsed['user']) ? $parsed['user'] . ($parsed['pass'] ? ':' . $parsed['pass'] : '') . '@' : '';
        $check_url .= isset($parsed['host']) ? $parsed['host'] : '';
        $check_url .= isset($parsed['port']) ? ':' . $parsed['port'] : '';
        $check_url .= isset($parsed['path']) ? $parsed['path'] : '';
        if (!in_array($check_url, $valid_requests)) {
            csajax_debug_message('Invalid url - ' . $request_url . ' does not included in valid requests');
            exit;
        }
    }
}
// append query string for GET requests
if ($request_method == 'GET' && count($request_params) > 0 && (!array_key_exists('query', $p_request_url) || empty($p_request_url['query']))) {
    $request_url .= '?' . http_build_query($request_params);
}
// let the request begin
$ch = curl_init($request_url);
// Suppress Expect header
if (CSAJAX_SUPPRESS_EXPECT) {
    array_push($request_headers, 'Expect:');
}
curl_setopt($ch, CURLOPT_HTTPHEADER, $request_headers);   // (re-)send headers
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);     // return response
curl_setopt($ch, CURLOPT_HEADER, true);       // enabled response headers
// add data for POST, PUT or DELETE requests
if ('POST' == $request_method) {
    $post_data = is_array($request_params) ? http_build_query($request_params) : $request_params;
    $post_data = authReplace($post_data);
    curl_setopt($ch, CURLOPT_POST, true);
    if ($decodeFlag) {
      curl_setopt($ch, CURLOPT_POSTFIELDS, urldecode($post_data));
    } else {
      curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
    }
} elseif ('PUT' == $request_method || 'DELETE' == $request_method) {
    curl_setopt($ch, CURLOPT_CUSTOMREQUEST, $request_method);
    curl_setopt($ch, CURLOPT_POSTFIELDS, $request_params);
}
// Set multiple options for curl according to configuration
if (is_array($curl_options) && 0 <= count($curl_options)) {
    curl_setopt_array($ch, $curl_options);
}
// retrieve response (headers and content)
$response = curl_exec($ch);
curl_close($ch);

// delete 100 Continue headers
$delimiter = "\r\n\r\n"; // HTTP header delimiter
// check if the 100 Continue header exists
while ( preg_match('#^HTTP/[0-9\\.]+\s+100\s+Continue#i',$response) ) {
    $tmp = explode($delimiter,$response,2); // grab the 100 Continue header
    $response = $tmp[1]; // update the response, purging the most recent 100 Continue header
}

// split response to header and content
list($response_headers, $response_content) = preg_split('/(\r\n){2}/', $response, 2);
// (re-)send the headers
$response_headers = preg_split('/(\r\n){1}/', $response_headers);
foreach ($response_headers as $key => $response_header) {
    // Rewrite the `Location` header, so clients will also use the proxy for redirects.
    if (preg_match('/^Location:/', $response_header)) {
        list($header, $value) = preg_split('/: /', $response_header, 2);
        $response_header = 'Location: ' . $_SERVER['REQUEST_URI'] . '?csurl=' . $value;
    }
    if (!preg_match('/^(Transfer-Encoding):/', $response_header)) {
        header($response_header, false);
    }
}

// Debug File proxy.log
if (true == CSAJAX_DEBUG) {
  $h = fopen("proxy.log", "a");
  fwrite($h, "Request URL: " . $request_url . "\n");
  fwrite($h, "Request Headers: " . print_r($request_headers, TRUE));
  fwrite($h, "Request Method: " . $request_method . "\n");
  if ('POST' == $request_method) {
    fwrite($h, "Post Params: " . $post_data . "\n");
  } elseif ('PUT' == $request_method || 'DELETE' == $request_method) {
    fwrite($h, "Request Params: " . print_r($request_params, true) . "\n");
  }
  fwrite($h, "Return: " . $response . "\n");
  fwrite($h, "Response Headers: " . print_r($response_headers, TRUE));
  fwrite($h, "Response Content: " . $response_content . "\n");
  fwrite($h, "\n");
  fclose($h);
}

// finally, output the content
print($response_content);

// insert authorization
function authReplace($str) {
    $str = str_replace('XxXRuNamexxxxxxxxxxxxxxxxxxxxxxx', 'Uwe_Jacobs-UweJacob-MUNATr-jwkrg', $str);
    $str = str_replace('XxXAppid', 'UweJacob-MUNATrad-PRD-d132041a0-85284729', $str);
    $str = str_replace('XxXDevid', '00fd6fda-3751-4095-b733-3899b20431ad', $str);
    $str = str_replace('XxXCertid', 'PRD-132041a078aa-1ee6-4300-9454-6c5b', $str);
    $str = str_replace('XxXDiscogsToken', 'zFvVdCdHTtQnDHCxEFTJiBhalyHFUsjdyFPCjbqP', $str);
    $str = str_replace('XxXUSPSUserId', '275MUNAT7574', $str);
    $str = str_replace('XxXShopifyApiKey', '41f0d3bf0e8e114496b198938996d9d8', $str);
    $str = str_replace('XxXShopifyPassword', 'f169694c488f45ccf187c92676765889', $str);
    $str = str_replace('XxXUPSAccessKey', 'DD53C5F37DF74D28', $str);
    $str = str_replace('XxXUPSUsername', 'muna_trading', $str);
    $str = str_replace('XxXUPSPassword', 'ZX83tbf!w7', $str);
    $str = str_replace('XxXAuthorization', base64_encode('UweJacob-MUNATrad-PRD-d132041a0-85284729' . ':' . 'PRD-132041a078aa-1ee6-4300-9454-6c5b'), $str);

    return($str);
}
function csajax_debug_message($message)
{
    if (true == CSAJAX_DEBUG) {
        print $message . PHP_EOL;
    }
}