]> scripts.mit.edu Git - autoinstallsdev/mediawiki.git/blobdiff - includes/HttpFunctions.php
MediaWiki 1.30.2
[autoinstallsdev/mediawiki.git] / includes / HttpFunctions.php
diff --git a/includes/HttpFunctions.php b/includes/HttpFunctions.php
deleted file mode 100644 (file)
index d598363..0000000
+++ /dev/null
@@ -1,893 +0,0 @@
-<?php
-/**
- * @defgroup HTTP HTTP
- */
-
-/**
- * Various HTTP related functions
- * @ingroup HTTP
- */
-class Http {
-       static $httpEngine = false;
-
-       /**
-        * Perform an HTTP request
-        * @param $method string HTTP method. Usually GET/POST
-        * @param $url string Full URL to act on
-        * @param $options options to pass to HttpRequest object
-        *                               Possible keys for the array:
-        *                                      timeout                   Timeout length in seconds
-        *                                      postData                  An array of key-value pairs or a url-encoded form data
-        *                                      proxy                     The proxy to use.      Will use $wgHTTPProxy (if set) otherwise.
-        *                                      noProxy                   Override $wgHTTPProxy (if set) and don't use any proxy at all.
-        *                                      sslVerifyHost     (curl only) Verify the SSL certificate
-        *                                      caInfo                    (curl only) Provide CA information
-        *                                      maxRedirects      Maximum number of redirects to follow (defaults to 5)
-        *                                      followRedirects   Whether to follow redirects (defaults to true)
-        * @returns mixed (bool)false on failure or a string on success
-        */
-       public static function request( $method, $url, $options = array() ) {
-               wfDebug( "HTTP: $method: $url" );
-               $options['method'] = strtoupper( $method );
-               if ( !isset( $options['timeout'] ) ) {
-                       $options['timeout'] = 'default';
-               }
-               $req = HttpRequest::factory( $url, $options );
-               $status = $req->execute();
-               if ( $status->isOK() ) {
-                       return $req->getContent();
-               } else {
-                       return false;
-               }
-       }
-
-       /**
-        * Simple wrapper for Http::request( 'GET' )
-        * @see Http::request()
-        */
-       public static function get( $url, $timeout = 'default', $options = array() ) {
-               $options['timeout'] = $timeout;
-               return Http::request( 'GET', $url, $options );
-       }
-
-       /**
-        * Simple wrapper for Http::request( 'POST' )
-        * @see Http::request()
-        */
-       public static function post( $url, $options = array() ) {
-               return Http::request( 'POST', $url, $options );
-       }
-
-       /**
-        * Check if the URL can be served by localhost
-        * @param $url string Full url to check
-        * @return bool
-        */
-       public static function isLocalURL( $url ) {
-               global $wgCommandLineMode, $wgConf;
-               if ( $wgCommandLineMode ) {
-                       return false;
-               }
-
-               // Extract host part
-               $matches = array();
-               if ( preg_match( '!^http://([\w.-]+)[/:].*$!', $url, $matches ) ) {
-                       $host = $matches[1];
-                       // Split up dotwise
-                       $domainParts = explode( '.', $host );
-                       // Check if this domain or any superdomain is listed in $wgConf as a local virtual host
-                       $domainParts = array_reverse( $domainParts );
-                       for ( $i = 0; $i < count( $domainParts ); $i++ ) {
-                               $domainPart = $domainParts[$i];
-                               if ( $i == 0 ) {
-                                       $domain = $domainPart;
-                               } else {
-                                       $domain = $domainPart . '.' . $domain;
-                               }
-                               if ( $wgConf->isLocalVHost( $domain ) ) {
-                                       return true;
-                               }
-                       }
-               }
-               return false;
-       }
-
-       /**
-        * A standard user-agent we can use for external requests.
-        * @returns string
-        */
-       public static function userAgent() {
-               global $wgVersion;
-               return "MediaWiki/$wgVersion";
-       }
-
-       /**
-        * Checks that the given URI is a valid one
-        * @param $uri Mixed: URI to check for validity
-        * @returns bool
-        */
-       public static function isValidURI( $uri ) {
-               return preg_match(
-                       '/(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/',
-                       $uri,
-                       $matches
-               );
-       }
-}
-
-/**
- * This wrapper class will call out to curl (if available) or fallback
- * to regular PHP if necessary for handling internal HTTP requests.
- */
-class HttpRequest {
-       protected $content;
-       protected $timeout = 'default';
-       protected $headersOnly = null;
-       protected $postData = null;
-       protected $proxy = null;
-       protected $noProxy = false;
-       protected $sslVerifyHost = true;
-       protected $caInfo = null;
-       protected $method = "GET";
-       protected $reqHeaders = array();
-       protected $url;
-       protected $parsedUrl;
-       protected $callback;
-       protected $maxRedirects = 5;
-       protected $followRedirects = true;
-
-       protected $cookieJar;
-
-       protected $headerList = array();
-       protected $respVersion = "0.9";
-       protected $respStatus = "200 Ok";
-       protected $respHeaders = array();
-
-       public $status;
-
-       /**
-        * @param $url   string url to use
-        * @param $options array (optional) extra params to pass (see Http::request())
-        */
-       function __construct( $url, $options = array() ) {
-               global $wgHTTPTimeout;
-
-               $this->url = $url;
-               $this->parsedUrl = parse_url( $url );
-
-               if ( !Http::isValidURI( $this->url ) ) {
-                       $this->status = Status::newFatal('http-invalid-url');
-               } else {
-                       $this->status = Status::newGood( 100 ); // continue
-               }
-
-               if ( isset($options['timeout']) && $options['timeout'] != 'default' ) {
-                       $this->timeout = $options['timeout'];
-               } else {
-                       $this->timeout = $wgHTTPTimeout;
-               }
-
-               $members = array( "postData", "proxy", "noProxy", "sslVerifyHost", "caInfo",
-                                                 "method", "followRedirects", "maxRedirects" );
-               foreach ( $members as $o ) {
-                       if ( isset($options[$o]) ) {
-                               $this->$o = $options[$o];
-                       }
-               }
-       }
-
-       /**
-        * Generate a new request object
-        * @see HttpRequest::__construct
-        */
-       public static function factory( $url, $options = null ) {
-               if ( !Http::$httpEngine ) {
-                       Http::$httpEngine = function_exists( 'curl_init' ) ? 'curl' : 'php';
-               } elseif ( Http::$httpEngine == 'curl' && !function_exists( 'curl_init' ) ) {
-                       throw new MWException( __METHOD__.': curl (http://php.net/curl) is not installed, but'.
-                                                                  ' Http::$httpEngine is set to "curl"' );
-               }
-
-               switch( Http::$httpEngine ) {
-               case 'curl':
-                       return new CurlHttpRequest( $url, $options );
-               case 'php':
-                       if ( !wfIniGetBool( 'allow_url_fopen' ) ) {
-                               throw new MWException( __METHOD__.': allow_url_fopen needs to be enabled for pure PHP'.
-                                       ' http requests to work. If possible, curl should be used instead. See http://php.net/curl.' );
-                       }
-                       return new PhpHttpRequest( $url, $options );
-               default:
-                       throw new MWException( __METHOD__.': The setting of Http::$httpEngine is not valid.' );
-               }
-       }
-
-       /**
-        * Get the body, or content, of the response to the request
-        * @return string
-        */
-       public function getContent() {
-               return $this->content;
-       }
-
-       /**
-        * Take care of setting up the proxy
-        * (override in subclass)
-        * @return string
-        */
-       public function proxySetup() {
-               global $wgHTTPProxy;
-
-               if ( $this->proxy ) {
-                       return;
-               }
-               if ( Http::isLocalURL( $this->url ) ) {
-                       $this->proxy = 'http://localhost:80/';
-               } elseif ( $wgHTTPProxy ) {
-                       $this->proxy = $wgHTTPProxy ;
-               } elseif ( getenv( "http_proxy" ) ) {
-                       $this->proxy = getenv( "http_proxy" );
-               }
-       }
-
-       /**
-        * Set the refererer header
-        */
-       public function setReferer( $url ) {
-               $this->setHeader('Referer', $url);
-       }
-
-       /**
-        * Set the user agent
-        */
-       public function setUserAgent( $UA ) {
-               $this->setHeader('User-Agent', $UA);
-       }
-
-       /**
-        * Set an arbitrary header
-        */
-       public function setHeader($name, $value) {
-               // I feel like I should normalize the case here...
-               $this->reqHeaders[$name] = $value;
-       }
-
-       /**
-        * Get an array of the headers
-        */
-       public function getHeaderList() {
-               $list = array();
-
-               if( $this->cookieJar ) {
-                       $this->reqHeaders['Cookie'] =
-                               $this->cookieJar->serializeToHttpRequest($this->parsedUrl['path'],
-                                                                                                                $this->parsedUrl['host']);
-               }
-               foreach($this->reqHeaders as $name => $value) {
-                       $list[] = "$name: $value";
-               }
-               return $list;
-       }
-
-       /**
-        * Set the callback
-        * @param $callback callback
-        */
-       public function setCallback( $callback ) {
-               $this->callback = $callback;
-       }
-
-       /**
-        * A generic callback to read the body of the response from a remote
-        * server.
-        * @param $fh handle
-        * @param $content string
-        */
-       public function read( $fh, $content ) {
-               $this->content .= $content;
-               return strlen( $content );
-       }
-
-       /**
-        * Take care of whatever is necessary to perform the URI request.
-        * @return Status
-        */
-       public function execute() {
-               global $wgTitle;
-
-               if( strtoupper($this->method) == "HEAD" ) {
-                       $this->headersOnly = true;
-               }
-
-               if ( is_array( $this->postData ) ) {
-                       $this->postData = wfArrayToCGI( $this->postData );
-               }
-
-               if ( is_object( $wgTitle ) && !isset($this->reqHeaders['Referer']) ) {
-                       $this->setReferer( $wgTitle->getFullURL() );
-               }
-
-               if ( !$this->noProxy ) {
-                       $this->proxySetup();
-               }
-
-               if ( !$this->callback ) {
-                       $this->setCallback( array( $this, 'read' ) );
-               }
-
-               if ( !isset($this->reqHeaders['User-Agent']) ) {
-                       $this->setUserAgent(Http::userAgent());
-               }
-       }
-
-       /**
-        * Parses the headers, including the HTTP status code and any
-        * Set-Cookie headers.  This function expectes the headers to be
-        * found in an array in the member variable headerList.
-        * @returns nothing
-        */
-       protected function parseHeader() {
-               $lastname = "";
-               foreach( $this->headerList as $header ) {
-                       if( preg_match( "#^HTTP/([0-9.]+) (.*)#", $header, $match ) ) {
-                               $this->respVersion = $match[1];
-                               $this->respStatus = $match[2];
-                       } elseif( preg_match( "#^[ \t]#", $header ) ) {
-                               $last = count($this->respHeaders[$lastname]) - 1;
-                               $this->respHeaders[$lastname][$last] .= "\r\n$header";
-                       } elseif( preg_match( "#^([^:]*):[\t ]*(.*)#", $header, $match ) ) {
-                               $this->respHeaders[strtolower( $match[1] )][] = $match[2];
-                               $lastname = strtolower( $match[1] );
-                       }
-               }
-
-               $this->parseCookies();
-       }
-
-       /**
-        * Sets the member variable status to a fatal status if the HTTP
-        * status code was not 200.
-        * @returns nothing
-        */
-       protected function setStatus() {
-               if( !$this->respHeaders ) {
-                       $this->parseHeader();
-               }
-
-               if((int)$this->respStatus !== 200) {
-                       list( $code, $message ) = explode(" ", $this->respStatus, 2);
-                       $this->status->fatal("http-bad-status", $code, $message );
-               }
-       }
-
-
-       /**
-        * Returns true if the last status code was a redirect.
-        * @return bool
-        */
-       public function isRedirect() {
-               if( !$this->respHeaders ) {
-                       $this->parseHeader();
-               }
-
-               $status = (int)$this->respStatus;
-               if ( $status >= 300 && $status < 400 ) {
-                       return true;
-               }
-               return false;
-       }
-
-       /**
-        * Returns an associative array of response headers after the
-        * request has been executed.  Because some headers
-        * (e.g. Set-Cookie) can appear more than once the, each value of
-        * the associative array is an array of the values given.
-        * @return array
-        */
-       public function getResponseHeaders() {
-               if( !$this->respHeaders ) {
-                       $this->parseHeader();
-               }
-               return $this->respHeaders;
-       }
-
-       /**
-        * Returns the value of the given response header.
-        * @param $header string
-        * @return string
-        */
-       public function getResponseHeader($header) {
-               if( !$this->respHeaders ) {
-                       $this->parseHeader();
-               }
-               if ( isset( $this->respHeaders[strtolower ( $header ) ] ) ) {
-                       $v = $this->respHeaders[strtolower ( $header ) ];
-                       return $v[count( $v ) - 1];
-               }
-               return null;
-       }
-
-       /**
-        * Tells the HttpRequest object to use this pre-loaded CookieJar.
-        * @param $jar CookieJar
-        */
-       public function setCookieJar( $jar ) {
-               $this->cookieJar = $jar;
-       }
-
-       /**
-        * Returns the cookie jar in use.
-        * @returns CookieJar
-        */
-       public function getCookieJar() {
-               if( !$this->respHeaders ) {
-                       $this->parseHeader();
-               }
-               return $this->cookieJar;
-       }
-
-       /**
-        * Sets a cookie.  Used before a request to set up any individual
-        * cookies.      Used internally after a request to parse the
-        * Set-Cookie headers.
-        * @see Cookie::set
-        */
-       public function setCookie( $name, $value = null, $attr = null) {
-               if( !$this->cookieJar ) {
-                       $this->cookieJar = new CookieJar;
-               }
-               $this->cookieJar->setCookie($name, $value, $attr);
-       }
-
-       /**
-        * Parse the cookies in the response headers and store them in the cookie jar.
-        */
-       protected function parseCookies() {
-               if( !$this->cookieJar ) {
-                       $this->cookieJar = new CookieJar;
-               }
-               if( isset( $this->respHeaders['set-cookie'] ) ) {
-                       $url = parse_url( $this->getFinalUrl() );
-                       foreach( $this->respHeaders['set-cookie'] as $cookie ) {
-                               $this->cookieJar->parseCookieResponseHeader( $cookie, $url['host'] );
-                       }
-               }
-       }
-
-       /**
-        * Returns the final URL after all redirections.
-        * @returns string
-        */
-       public function getFinalUrl() {
-               $location = $this->getResponseHeader("Location");
-               if ( $location ) {
-                       return $location;
-               }
-
-               return $this->url;
-       }
-}
-
-
-class Cookie {
-       protected $name;
-       protected $value;
-       protected $expires;
-       protected $path;
-       protected $domain;
-       protected $isSessionKey = true;
-       // TO IMPLEMENT  protected $secure
-       // TO IMPLEMENT? protected $maxAge (add onto expires)
-       // TO IMPLEMENT? protected $version
-       // TO IMPLEMENT? protected $comment
-
-       function __construct( $name, $value, $attr ) {
-               $this->name = $name;
-               $this->set( $value, $attr );
-       }
-
-       /**
-        * Sets a cookie.  Used before a request to set up any individual
-        * cookies.      Used internally after a request to parse the
-        * Set-Cookie headers.
-        * @param $name string the name of the cookie
-        * @param $value string the value of the cookie
-        * @param $attr array possible key/values:
-        *              expires  A date string
-        *              path     The path this cookie is used on
-        *              domain   Domain this cookie is used on
-        */
-       public function set( $value, $attr ) {
-               $this->value = $value;
-               if( isset( $attr['expires'] ) ) {
-                       $this->isSessionKey = false;
-                       $this->expires = strtotime( $attr['expires'] );
-               }
-               if( isset( $attr['path'] ) ) {
-                       $this->path = $attr['path'];
-               } else {
-                       $this->path = "/";
-               }
-               if( isset( $attr['domain'] ) ) {
-                       if( self::validateCookieDomain( $attr['domain'] ) ) {
-                               $this->domain = $attr['domain'];
-                       }
-               } else {
-                       throw new MWException("You must specify a domain.");
-               }
-       }
-
-       /**
-        * Return the true if the cookie is valid is valid.  Otherwise,
-        * false.  The uses a method similar to IE cookie security
-        * described here:
-        * http://kuza55.blogspot.com/2008/02/understanding-cookie-security.html
-        * A better method might be to use a blacklist like
-        * http://publicsuffix.org/
-        *
-        * @param $domain string the domain to validate
-        * @param $originDomain string (optional) the domain the cookie originates from
-        * @return bool
-        */
-       public static function validateCookieDomain( $domain, $originDomain = null) {
-               // Don't allow a trailing dot
-               if( substr( $domain, -1 ) == "." ) return false;
-
-               $dc = explode(".", $domain);
-
-               // Don't allow cookies for "localhost", "ls" or other dot-less hosts
-               if( count($dc) < 2 ) return false;
-
-               // Only allow full, valid IP addresses
-               if( preg_match( '/^[0-9.]+$/', $domain ) ) {
-                       if( count( $dc ) != 4 ) return false;
-
-                       if( ip2long( $domain ) === false ) return false;
-
-                       if( $originDomain == null || $originDomain == $domain ) return true;
-
-               }
-
-               // Don't allow cookies for "co.uk" or "gov.uk", etc, but allow "supermarket.uk"
-               if( strrpos( $domain, "." ) - strlen( $domain )  == -3 ) {
-                       if( (count($dc) == 2 && strlen( $dc[0] ) <= 2 )
-                               || (count($dc) == 3 && strlen( $dc[0] ) == "" && strlen( $dc[1] ) <= 2 ) ) {
-                               return false;
-                       }
-                       if( (count($dc) == 2 || (count($dc) == 3 && $dc[0] == "") )
-                               && preg_match( '/(com|net|org|gov|edu)\...$/', $domain) ) {
-                               return false;
-                       }
-               }
-
-               if( $originDomain != null ) {
-                       if( substr( $domain, 0, 1 ) != "." && $domain != $originDomain ) {
-                               return false;
-                       }
-                       if( substr( $domain, 0, 1 ) == "."
-                               && substr_compare( $originDomain, $domain, -strlen( $domain ),
-                                                                  strlen( $domain ), TRUE ) != 0 ) {
-                               return false;
-                       }
-               }
-
-               return true;
-       }
-
-       /**
-        * Serialize the cookie jar into a format useful for HTTP Request headers.
-        * @param $path string the path that will be used. Required.
-        * @param $domain string the domain that will be used. Required.
-        * @return string
-        */
-       public function serializeToHttpRequest( $path, $domain ) {
-               $ret = "";
-
-               if( $this->canServeDomain( $domain )
-                               && $this->canServePath( $path )
-                               && $this->isUnExpired() ) {
-                       $ret = $this->name ."=". $this->value;
-               }
-
-               return $ret;
-       }
-
-       protected function canServeDomain( $domain ) {
-               if( $domain == $this->domain
-                       || ( strlen( $domain) > strlen( $this->domain )
-                                && substr( $this->domain, 0, 1) == "."
-                                && substr_compare( $domain, $this->domain, -strlen( $this->domain ),
-                                                                       strlen( $this->domain ), TRUE ) == 0 ) ) {
-                       return true;
-               }
-               return false;
-       }
-
-       protected function canServePath( $path ) {
-               if( $this->path && substr_compare( $this->path, $path, 0, strlen( $this->path ) ) == 0 ) {
-                       return true;
-               }
-               return false;
-       }
-
-       protected function isUnExpired() {
-               if( $this->isSessionKey || $this->expires > time() ) {
-                       return true;
-               }
-               return false;
-       }
-
-}
-
-class CookieJar {
-       private $cookie = array();
-
-       /**
-        * Set a cookie in the cookie jar.      Make sure only one cookie per-name exists.
-        * @see Cookie::set()
-        */
-       public function setCookie ($name, $value, $attr) {
-               /* cookies: case insensitive, so this should work.
-                * We'll still send the cookies back in the same case we got them, though.
-                */
-               $index = strtoupper($name);
-               if( isset( $this->cookie[$index] ) ) {
-                       $this->cookie[$index]->set( $value, $attr );
-               } else {
-                       $this->cookie[$index] = new Cookie( $name, $value, $attr );
-               }
-       }
-
-       /**
-        * @see Cookie::serializeToHttpRequest
-        */
-       public function serializeToHttpRequest( $path, $domain ) {
-               $cookies = array();
-
-               foreach( $this->cookie as $c ) {
-                       $serialized = $c->serializeToHttpRequest( $path, $domain );
-                       if ( $serialized ) $cookies[] = $serialized;
-               }
-
-               return implode("; ", $cookies);
-       }
-
-       /**
-        * Parse the content of an Set-Cookie HTTP Response header.
-        * @param $cookie string
-        */
-       public function parseCookieResponseHeader ( $cookie, $domain ) {
-               $len = strlen( "Set-Cookie:" );
-               if ( substr_compare( "Set-Cookie:", $cookie, 0, $len, TRUE ) === 0 ) {
-                       $cookie = substr( $cookie, $len );
-               }
-
-               $bit = array_map( 'trim', explode( ";", $cookie ) );
-               if ( count($bit) >= 1 ) {
-                       list($name, $value) = explode( "=", array_shift( $bit ), 2 );
-                       $attr = array();
-                       foreach( $bit as $piece ) {
-                               $parts = explode( "=", $piece );
-                               if( count( $parts ) > 1 ) {
-                                       $attr[strtolower( $parts[0] )] = $parts[1];
-                               } else {
-                                       $attr[strtolower( $parts[0] )] = true;
-                               }
-                       }
-
-                       if( !isset( $attr['domain'] ) ) {
-                               $attr['domain'] = $domain;
-                       } elseif ( !Cookie::validateCookieDomain( $attr['domain'], $domain ) ) {
-                               return null;
-                       }
-
-                       $this->setCookie( $name, $value, $attr );
-               }
-       }
-}
-
-
-/**
- * HttpRequest implemented using internal curl compiled into PHP
- */
-class CurlHttpRequest extends HttpRequest {
-       static $curlMessageMap = array(
-               6 => 'http-host-unreachable',
-               28 => 'http-timed-out'
-       );
-
-       protected $curlOptions = array();
-       protected $headerText = "";
-
-       protected function readHeader( $fh, $content ) {
-               $this->headerText .= $content;
-               return strlen( $content );
-       }
-
-       public function execute() {
-               parent::execute();
-               if ( !$this->status->isOK() ) {
-                       return $this->status;
-               }
-               $this->curlOptions[CURLOPT_PROXY] = $this->proxy;
-               $this->curlOptions[CURLOPT_TIMEOUT] = $this->timeout;
-               $this->curlOptions[CURLOPT_HTTP_VERSION] = CURL_HTTP_VERSION_1_0;
-               $this->curlOptions[CURLOPT_WRITEFUNCTION] = $this->callback;
-               $this->curlOptions[CURLOPT_HEADERFUNCTION] = array($this, "readHeader");
-               $this->curlOptions[CURLOPT_MAXREDIRS] = $this->maxRedirects;
-
-               /* not sure these two are actually necessary */
-               if(isset($this->reqHeaders['Referer'])) {
-                       $this->curlOptions[CURLOPT_REFERER] = $this->reqHeaders['Referer'];
-               }
-               $this->curlOptions[CURLOPT_USERAGENT] = $this->reqHeaders['User-Agent'];
-
-               if ( $this->sslVerifyHost ) {
-                       $this->curlOptions[CURLOPT_SSL_VERIFYHOST] = $this->sslVerifyHost;
-               }
-
-               if ( $this->caInfo ) {
-                       $this->curlOptions[CURLOPT_CAINFO] = $this->caInfo;
-               }
-
-               if ( $this->headersOnly ) {
-                       $this->curlOptions[CURLOPT_NOBODY] = true;
-                       $this->curlOptions[CURLOPT_HEADER] = true;
-               } elseif ( $this->method == 'POST' ) {
-                       $this->curlOptions[CURLOPT_POST] = true;
-                       $this->curlOptions[CURLOPT_POSTFIELDS] = $this->postData;
-                       // Suppress 'Expect: 100-continue' header, as some servers
-                       // will reject it with a 417 and Curl won't auto retry
-                       // with HTTP 1.0 fallback
-                       $this->reqHeaders['Expect'] = '';
-               } else {
-                       $this->curlOptions[CURLOPT_CUSTOMREQUEST] = $this->method;
-               }
-
-               $this->curlOptions[CURLOPT_HTTPHEADER] = $this->getHeaderList();
-
-               $curlHandle = curl_init( $this->url );
-               if ( !curl_setopt_array( $curlHandle, $this->curlOptions ) ) {
-                       throw new MWException("Error setting curl options.");
-               }
-               if ( ! @curl_setopt( $curlHandle, CURLOPT_FOLLOWLOCATION, $this->followRedirects ) ) {
-                       wfDebug("Couldn't set CURLOPT_FOLLOWLOCATION. Probably safe_mode or open_basedir is set.");
-                       /* Continue the processing. If it were in curl_setopt_array, processing would have halted on its entry */
-               }
-
-               if ( false === curl_exec( $curlHandle ) ) {
-                       $code = curl_error( $curlHandle );
-
-                       if ( isset( self::$curlMessageMap[$code] ) ) {
-                               $this->status->fatal( self::$curlMessageMap[$code] );
-                       } else {
-                               $this->status->fatal( 'http-curl-error', curl_error( $curlHandle ) );
-                       }
-               } else {
-                       $this->headerList = explode("\r\n", $this->headerText);
-               }
-
-               curl_close( $curlHandle );
-
-               $this->parseHeader();
-               $this->setStatus();
-               return $this->status;
-       }
-}
-
-class PhpHttpRequest extends HttpRequest {
-       protected $manuallyRedirect = false;
-
-       protected function urlToTcp( $url ) {
-               $parsedUrl = parse_url( $url );
-
-               return 'tcp://' . $parsedUrl['host'] . ':' . $parsedUrl['port'];
-       }
-
-       public function execute() {
-               parent::execute();
-
-               // At least on Centos 4.8 with PHP 5.1.6, using max_redirects to follow redirects
-               // causes a segfault
-               if ( version_compare( '5.1.7', phpversion(), '>' ) ) {
-                       $this->manuallyRedirect = true;
-               }
-
-               if ( $this->parsedUrl['scheme'] != 'http' ) {
-                       $this->status->fatal( 'http-invalid-scheme', $this->parsedUrl['scheme'] );
-               }
-
-               $this->reqHeaders['Accept'] = "*/*";
-               if ( $this->method == 'POST' ) {
-                       // Required for HTTP 1.0 POSTs
-                       $this->reqHeaders['Content-Length'] = strlen( $this->postData );
-                       $this->reqHeaders['Content-type'] = "application/x-www-form-urlencoded";
-               }
-
-               $options = array();
-               if ( $this->proxy && !$this->noProxy ) {
-                       $options['proxy'] = $this->urlToTCP( $this->proxy );
-                       $options['request_fulluri'] = true;
-               }
-
-               if ( !$this->followRedirects || $this->manuallyRedirect ) {
-                       $options['max_redirects'] = 0;
-               } else {
-                       $options['max_redirects'] = $this->maxRedirects;
-               }
-
-               $options['method'] = $this->method;
-               $options['header'] = implode("\r\n", $this->getHeaderList());
-               // Note that at some future point we may want to support
-               // HTTP/1.1, but we'd have to write support for chunking
-               // in version of PHP < 5.3.1
-               $options['protocol_version'] = "1.0";
-
-               // This is how we tell PHP we want to deal with 404s (for example) ourselves.
-               // Only works on 5.2.10+
-               $options['ignore_errors'] = true;
-
-               if ( $this->postData ) {
-                       $options['content'] = $this->postData;
-               }
-
-               $oldTimeout = false;
-               if ( version_compare( '5.2.1', phpversion(), '>' ) ) {
-                       $oldTimeout = ini_set('default_socket_timeout', $this->timeout);
-               } else {
-                       $options['timeout'] = $this->timeout;
-               }
-
-               $context = stream_context_create( array( 'http' => $options ) );
-
-               $this->headerList = array();
-               $reqCount = 0;
-               $url = $this->url;
-               do {
-                       $again = false;
-                       $reqCount++;
-                       wfSuppressWarnings();
-                       $fh = fopen( $url, "r", false, $context );
-                       wfRestoreWarnings();
-                       if ( $fh ) {
-                               $result = stream_get_meta_data( $fh );
-                               $this->headerList = $result['wrapper_data'];
-                               $this->parseHeader();
-                               $url = $this->getResponseHeader("Location");
-                               $again = $this->manuallyRedirect && $this->followRedirects && $url
-                                       && $this->isRedirect() && $this->maxRedirects > $reqCount;
-                       }
-               } while ( $again );
-
-               if ( $oldTimeout !== false ) {
-                       ini_set('default_socket_timeout', $oldTimeout);
-               }
-               $this->setStatus();
-
-               if ( $fh === false ) {
-                       $this->status->fatal( 'http-request-error' );
-                       return $this->status;
-               }
-
-               if ( $result['timed_out'] ) {
-                       $this->status->fatal( 'http-timed-out', $this->url );
-                       return $this->status;
-               }
-
-               if($this->status->isOK()) {
-                       while ( !feof( $fh ) ) {
-                               $buf = fread( $fh, 8192 );
-                               if ( $buf === false ) {
-                                       $this->status->fatal( 'http-read-error' );
-                                       break;
-                               }
-                               if ( strlen( $buf ) ) {
-                                       call_user_func( $this->callback, $fh, $buf );
-                               }
-                       }
-               }
-               fclose( $fh );
-
-               return $this->status;
-       }
-}