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<?php |
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|
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class Redux_P { |
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|
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public function __construct() { |
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|
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add_action( "wp_ajax_nopriv_redux_p", array( $this, 'proxy' ) ); |
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add_action( "wp_ajax_redux_p", array( $this, 'proxy' ) ); |
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} |
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|
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public function proxy() { |
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|
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if ( ! isset( $_GET['nonce'] ) || ( isset( $_GET['nonce'] ) && ! wp_verify_nonce( $_GET['nonce'], "redux-ads-nonce" ) ) ) { |
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die(); |
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} |
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|
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// Script: Simple PHP Proxy: Get external HTML, JSON and more! |
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// |
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// *Version: 1.6, Last updated: 1/24/2009* |
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// |
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// Project Home - http://benalman.com/projects/php-simple-proxy/ |
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// GitHub - http://github.com/cowboy/php-simple-proxy/ |
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// Source - http://github.com/cowboy/php-simple-proxy/raw/master/ba-simple-proxy.php |
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// |
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// About: License |
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// |
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// Copyright (c) 2010 "Cowboy" Ben Alman, |
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// Dual licensed under the MIT and GPL licenses. |
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// http://benalman.com/about/license/ |
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// |
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// About: Examples |
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// |
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// This working example, complete with fully commented code, illustrates one way |
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// in which this PHP script can be used. |
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// |
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// Simple - http://benalman.com/code/projects/php-simple-proxy/examples/simple/ |
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// |
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// About: Release History |
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// |
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// 1.6 - (1/24/2009) Now defaults to JSON mode, which can now be changed to |
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// native mode by specifying ?mode=native. Native and JSONP modes are |
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// disabled by default because of possible XSS vulnerability issues, but |
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// are configurable in the PHP script along with a url validation regex. |
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// 1.5 - (12/27/2009) Initial release |
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// |
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// Topic: GET Parameters |
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// |
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// Certain GET (query string) parameters may be passed into ba-simple-proxy.php |
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// to control its behavior, this is a list of these parameters. |
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// |
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// url - The remote URL resource to fetch. Any GET parameters to be passed |
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// through to the remote URL resource must be urlencoded in this parameter. |
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// mode - If mode=native, the response will be sent using the same content |
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// type and headers that the remote URL resource returned. If omitted, the |
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// response will be JSON (or JSONP). <Native requests> and <JSONP requests> |
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// are disabled by default, see <Configuration Options> for more information. |
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// callback - If specified, the response JSON will be wrapped in this named |
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// function call. This parameter and <JSONP requests> are disabled by |
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// default, see <Configuration Options> for more information. |
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// user_agent - This value will be sent to the remote URL request as the |
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// `User-Agent:` HTTP request header. If omitted, the browser user agent |
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// will be passed through. |
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// send_cookies - If send_cookies=1, all cookies will be forwarded through to |
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// the remote URL request. |
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// send_session - If send_session=1 and send_cookies=1, the SID cookie will be |
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// forwarded through to the remote URL request. |
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// full_headers - If a JSON request and full_headers=1, the JSON response will |
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// contain detailed header information. |
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// full_status - If a JSON request and full_status=1, the JSON response will |
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// contain detailed cURL status information, otherwise it will just contain |
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// the `http_code` property. |
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// |
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// Topic: POST Parameters |
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// |
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// All POST parameters are automatically passed through to the remote URL |
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// request. |
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// |
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// Topic: JSON requests |
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// |
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// This request will return the contents of the specified url in JSON format. |
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// |
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// Request: |
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// |
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// > ba-simple-proxy.php?url=http://example.com/ |
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// |
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// Response: |
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// |
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// > { "contents": "<html>...</html>", "headers": {...}, "status": {...} } |
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// |
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// JSON object properties: |
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// |
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// contents - (String) The contents of the remote URL resource. |
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// headers - (Object) A hash of HTTP headers returned by the remote URL |
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// resource. |
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// status - (Object) A hash of status codes returned by cURL. |
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// |
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// Topic: JSONP requests |
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// |
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// This request will return the contents of the specified url in JSONP format |
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// (but only if $enable_jsonp is enabled in the PHP script). |
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// |
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// Request: |
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// |
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// > ba-simple-proxy.php?url=http://example.com/&callback=foo |
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// |
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// Response: |
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// |
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// > foo({ "contents": "<html>...</html>", "headers": {...}, "status": {...} }) |
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// |
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// JSON object properties: |
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// |
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// contents - (String) The contents of the remote URL resource. |
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// headers - (Object) A hash of HTTP headers returned by the remote URL |
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// resource. |
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// status - (Object) A hash of status codes returned by cURL. |
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// |
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// Topic: Native requests |
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// |
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// This request will return the contents of the specified url in the format it |
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// was received in, including the same content-type and other headers (but only |
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// if $enable_native is enabled in the PHP script). |
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// |
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// Request: |
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// |
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// > ba-simple-proxy.php?url=http://example.com/&mode=native |
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// |
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// Response: |
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// |
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// > <html>...</html> |
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// |
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// Topic: Notes |
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// |
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// * Assumes magic_quotes_gpc = Off in php.ini |
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// |
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// Topic: Configuration Options |
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// |
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// These variables can be manually edited in the PHP file if necessary. |
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// |
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// $enable_jsonp - Only enable <JSONP requests> if you really need to. If you |
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// install this script on the same server as the page you're calling it |
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// from, plain JSON will work. Defaults to false. |
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// $enable_native - You can enable <Native requests>, but you should only do |
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// this if you also whitelist specific URLs using $valid_url_regex, to avoid |
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// possible XSS vulnerabilities. Defaults to false. |
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// $valid_url_regex - This regex is matched against the url parameter to |
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// ensure that it is valid. This setting only needs to be used if either |
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// $enable_jsonp or $enable_native are enabled. Defaults to '/.*/' which |
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// validates all URLs. |
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// |
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// ############################################################################ |
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|
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|
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$_GET['mode'] = "native"; |
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$_GET['full_headers'] = 1; |
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$_GET['full_status'] = 1; |
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$_GET['send_cookies'] = 1; |
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// Change these configuration options if needed, see above descriptions for info. |
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$enable_jsonp = false; |
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$enable_native = true; |
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$valid_url_regex = '/.*/'; |
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|
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// ############################################################################ |
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$url = $_GET['url']; |
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|
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if ( isset( $_GET['nonce'] ) ) { |
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$url = str_replace( 'nonce=' . $_GET['nonce'] . '&', '', $url ); |
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} |
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|
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|
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if ( ! $url ) { |
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// Passed url not specified. |
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$contents = 'ERROR: url not specified'; |
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$status = array( 'http_code' => 'ERROR' ); |
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|
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} else if ( ! preg_match( $valid_url_regex, $url ) ) { |
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// Passed url doesn't match $valid_url_regex. |
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$contents = 'ERROR: invalid url'; |
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$status = array( 'http_code' => 'ERROR' ); |
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|
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} else { |
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$url = urldecode( $url ); |
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if ( isset( $_GET['proxy'] ) ) { |
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$url .= '&proxy=' . $_GET['proxy']; |
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} |
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// Ad URL rewrite |
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if ( strpos( $url, 'http' ) === false ) { |
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$url = 'http:' . $url; |
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} |
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|
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if ( isset( $_GET['callback'] ) ) { |
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foreach ( $_GET as $key => $value ) { |
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if ( in_array( $key, array( 'url', 'mode', 'full_headers', 'full_status', 'send_cookies' ) ) ) { |
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continue; |
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} |
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$url .= "&" . $key . '=' . $value; |
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} |
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} |
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|
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$args = array( |
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'user-agent' => isset( $_GET['user_agent'] ) ? $_GET['user_agent'] : $_SERVER['HTTP_USER_AGENT'], |
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'method' => 'GET', |
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); |
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|
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if ( isset( $_GET['send_cookies'] ) && $_GET['send_cookies'] ) { |
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$cookie = array(); |
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foreach ( $_COOKIE as $key => $value ) { |
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$cookie[] = $key . '=' . $value; |
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} |
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if ( isset( $_GET['send_session'] ) && $_GET['send_session'] ) { |
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$cookie[] = SID; |
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} |
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$args['cookies'] = $cookie; |
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|
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} |
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if ( strtolower( $_SERVER['REQUEST_METHOD'] ) == 'post' ) { |
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$args['body'] = $_POST; |
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$args['method'] = 'POST'; |
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|
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} |
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|
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$response = wp_remote_request( |
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$url, |
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$args |
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); |
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|
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if ( ! is_wp_error( $response ) ) { |
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$status = $response['response']['code']; |
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$contents = $response['body']; |
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} |
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|
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} |
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|
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|
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if ( isset( $_GET['mode'] ) && $_GET['mode'] == 'native' ) { |
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if ( ! $enable_native ) { |
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$contents = 'ERROR: invalid mode'; |
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$status = array( 'http_code' => 'ERROR' ); |
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} |
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|
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if ( ! is_wp_error( $response ) && isset( $response['headers']['content-type'] ) ) { |
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header( 'Content-Type: ' . $response['headers']['content-type'] ); |
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} |
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if ( ! is_wp_error( $response ) && isset( $response['headers']['content-language'] ) ) { |
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header( 'Content-Language: ' . $response['headers']['content-language'] ); |
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} |
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if ( ! is_wp_error( $response ) && isset( $response['headers']['set-cookie'] ) ) { |
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header( 'Set-Cookie: ' . $response['headers']['set-cookie'] ); |
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} |
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|
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if ( isset( $contents ) ) { |
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print str_replace( 'ads.redux.io', 'look.redux.io', $contents ); |
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} |
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|
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} else { |
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// $data will be serialized into JSON data. |
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$data = array(); |
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|
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// Propagate all HTTP headers into the JSON data object. |
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if ( isset( $_GET['full_headers'] ) && $_GET['full_headers'] ) { |
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$data['headers'] = array(); |
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|
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} |
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|
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// Propagate all cURL request / response info to the JSON data object. |
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if ( isset( $_GET['full_status'] ) && $_GET['full_status'] ) { |
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$data['status'] = $status; |
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} else { |
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$data['status'] = array(); |
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$data['status']['http_code'] = $status['http_code']; |
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} |
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|
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// Set the JSON data object contents, decoding it from JSON if possible. |
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$decoded_json = json_decode( $contents ); |
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$data['contents'] = str_replace( 'e(window).width()', 'window.innerWidth||e(window).width()', $decoded_json ? $decoded_json : $contents ); |
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|
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// Generate appropriate content-type header. |
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|
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$is_xhr = isset( $_SERVER['HTTP_X_REQUESTED_WITH'] ) ? strtolower( $_SERVER['HTTP_X_REQUESTED_WITH'] ) : 'xmlhttprequest'; |
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header( 'Content-type: application/' . ( $is_xhr ? 'json' : 'x-javascript' ) ); |
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|
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// Get JSONP callback. |
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$jsonp_callback = $enable_jsonp && isset( $_GET['callback'] ) ? $_GET['callback'] : null; |
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|
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// Generate JSON/JSONP string |
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$json = json_encode( $data ); |
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|
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print $jsonp_callback ? "$jsonp_callback($json)" : $json; |
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|
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} |
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|
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} |
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} |
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|
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new Redux_P(); |
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|
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|
