<?php
/**
- * Various HTTP related functions
+ * @defgroup HTTP HTTP
*/
/**
- * Get the contents of a file by HTTP
- *
- * if $timeout is 'default', $wgHTTPTimeout is used
+ * Various HTTP related functions
+ * @ingroup HTTP
*/
-function wfGetHTTP( $url, $timeout = 'default' ) {
- global $wgServer, $wgHTTPTimeout, $wgHTTPProxy;
-
-
- # Use curl if available
- if ( function_exists( 'curl_init' ) ) {
- $c = curl_init( $url );
- if ( wfIsLocalURL( $url ) ) {
- curl_setopt( $c, CURLOPT_PROXY, 'localhost:80' );
- } else if ($wgHTTPProxy)
- curl_setopt($c, CURLOPT_PROXY, $wgHTTPProxy);
-
- if ( $timeout == 'default' ) {
- $timeout = $wgHTTPTimeout;
- }
- curl_setopt( $c, CURLOPT_TIMEOUT, $timeout );
- ob_start();
- curl_exec( $c );
- $text = ob_get_contents();
- ob_end_clean();
- curl_close( $c );
- } else {
- # Otherwise use file_get_contents, or its compatibility function from GlobalFunctions.php
- # This may take 3 minutes to time out, and doesn't have local fetch capabilities
- $url_fopen = ini_set( 'allow_url_fopen', 1 );
- $text = file_get_contents( $url );
- ini_set( 'allow_url_fopen', $url_fopen );
- }
- return $text;
+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 Array: options to pass to MWHttpRequest 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 hostname against certificate
+ * - sslVerifyCert (curl only) Verify 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 false).
+ * Note: this should only be used when the target URL is trusted,
+ * to avoid attacks on intranet services accessible by HTTP.
+ * @return Mixed: (bool)false on failure or a string on success
+ */
+ public static function request( $method, $url, $options = array() ) {
+ $url = wfExpandUrl( $url );
+ wfDebug( "HTTP: $method: $url\n" );
+ $options['method'] = strtoupper( $method );
+
+ if ( !isset( $options['timeout'] ) ) {
+ $options['timeout'] = 'default';
+ }
+
+ $req = MWHttpRequest::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 Boolean
+ */
+ 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.
+ * @return String
+ */
+ public static function userAgent() {
+ global $wgVersion;
+ return "MediaWiki/$wgVersion";
+ }
+
+ /**
+ * Checks that the given URI is a valid one. Hardcoding the
+ * protocols, because we only want protocols that both cURL
+ * and php support.
+ *
+ * @fixme this is wildly inaccurate and fails to actually check most stuff
+ *
+ * @param $uri Mixed: URI to check for validity
+ * @returns Boolean
+ */
+ public static function isValidURI( $uri ) {
+ return preg_match(
+ '/^https?:\/\/[^\/\s]\S*$/D',
+ $uri
+ );
+ }
}
/**
- * Check if the URL can be served by localhost
+ * This wrapper class will call out to curl (if available) or fallback
+ * to regular PHP if necessary for handling internal HTTP requests.
+ *
+ * Renamed from HttpRequest to MWHttpRequst to avoid conflict with
+ * php's HTTP extension.
*/
-function wfIsLocalURL( $url ) {
- global $wgConf;
- // Extract host part
- if ( preg_match( '!^http://([\w.-]+)[/:].*$!', $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;
+class MWHttpRequest {
+ protected $content;
+ protected $timeout = 'default';
+ protected $headersOnly = null;
+ protected $postData = null;
+ protected $proxy = null;
+ protected $noProxy = false;
+ protected $sslVerifyHost = true;
+ protected $sslVerifyCert = true;
+ protected $caInfo = null;
+ protected $method = "GET";
+ protected $reqHeaders = array();
+ protected $url;
+ protected $parsedUrl;
+ protected $callback;
+ protected $maxRedirects = 5;
+ protected $followRedirects = false;
+
+ 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", "sslVerifyCert" );
+
+ foreach ( $members as $o ) {
+ if ( isset( $options[$o] ) ) {
+ $this->$o = $options[$o];
}
- if ( $wgConf->isLocalVHost( $domain ) ) {
+ }
+ }
+
+ /**
+ * Generate a new request object
+ * @see MWHttpRequest::__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;
+ }
+
+ /**
+ * Set the parameters of the request
+
+ * @param $args Array
+ * @todo overload the args param
+ */
+ public function setData( $args ) {
+ $this->postData = $args;
+ }
+
+ /**
+ * 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 a read callback to accept data read from the HTTP request.
+ * By default, data is appended to an internal buffer which can be
+ * retrieved through $req->getContent().
+ *
+ * To handle data as it comes in -- especially for large files that
+ * would not fit in memory -- you can instead set your own callback,
+ * in the form function($resource, $buffer) where the first parameter
+ * is the low-level resource being read (implementation specific),
+ * and the second parameter is the data buffer.
+ *
+ * You MUST return the number of bytes handled in the buffer; if fewer
+ * bytes are reported handled than were passed to you, the HTTP fetch
+ * will be aborted.
+ *
+ * @param $callback Callback
+ */
+ public function setCallback( $callback ) {
+ if ( !is_callable( $callback ) ) {
+ throw new MWException( 'Invalid MwHttpRequest 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;
+
+ $this->content = "";
+
+ 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.
+ *
+ * @return 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] );
+ }
+ }
+
+ $this->parseCookies();
+ }
+
+ /**
+ * Sets HTTPRequest status member to a fatal value with the error
+ * message if the returned integer value of the status code was
+ * not successful (< 300) or a redirect (>=300 and < 400). (see
+ * RFC2616, section 10,
+ * http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html for a
+ * list of status codes.)
+ *
+ * @return nothing
+ */
+ protected function setStatus() {
+ if ( !$this->respHeaders ) {
+ $this->parseHeader();
+ }
+
+ if ( (int)$this->respStatus > 399 ) {
+ list( $code, $message ) = explode( " ", $this->respStatus, 2 );
+ $this->status->fatal( "http-bad-status", $code, $message );
+ }
+ }
+
+ /**
+ * Get the integer value of the HTTP status code (e.g. 200 for "200 Ok")
+ * (see RFC2616, section 10, http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
+ * for a list of status codes.)
+ *
+ * @return Integer
+ */
+ public function getStatus() {
+ if ( !$this->respHeaders ) {
+ $this->parseHeader();
+ }
+
+ return (int)$this->respStatus;
+ }
+
+
+ /**
+ * Returns true if the last status code was a redirect.
+ *
+ * @return Boolean
+ */
+ public function isRedirect() {
+ if ( !$this->respHeaders ) {
+ $this->parseHeader();
+ }
+
+ $status = (int)$this->respStatus;
+
+ if ( $status >= 300 && $status <= 303 ) {
+ return true;
+ }
+
+ return false;
+ }
+
+ /**
+ * Returns an associative array of response headers after the
+ * request has been executed. Because some headers
+ * (e.g. Set-Cookie) can appear more than once the, each value of
+ * the associative array is an array of the values given.
+ *
+ * @return Array
+ */
+ public function getResponseHeaders() {
+ if ( !$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 MWHttpRequest 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.
+ *
+ * @return String
+ */
+ public function getFinalUrl() {
+ $location = $this->getResponseHeader( "Location" );
+
+ if ( $location ) {
+ return $location;
+ }
+
+ return $this->url;
+ }
+
+ /**
+ * Returns true if the backend can follow redirects. Overridden by the
+ * child classes.
+ */
+ public function canFollowRedirects() {
+ return true;
+ }
+}
+
+
+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 $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 Boolean
+ */
+ public static function validateCookieDomain( $domain, $originDomain = null ) {
+ // Don't allow a trailing dot
+ if ( substr( $domain, -1 ) == "." ) {
+ return false;
+ }
+
+ $dc = explode( ".", $domain );
+
+ // Only allow full, valid IP addresses
+ if ( preg_match( '/^[0-9.]+$/', $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
+ * @param $domain String: cookie's domain
+ */
+ 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 );
+ }
+ }
+}
+
+/**
+ * MWHttpRequest implemented using internal curl compiled into PHP
+ */
+class CurlHttpRequest extends MWHttpRequest {
+ 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;
+ $this->curlOptions[CURLOPT_ENCODING] = ""; # Enable compression
+
+ /* 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 ( isset( $this->sslVerifyHost ) ) {
+ $this->curlOptions[CURLOPT_SSL_VERIFYHOST] = $this->sslVerifyHost;
+ }
+
+ if ( isset( $this->sslVerifyCert ) ) {
+ $this->curlOptions[CURLOPT_SSL_VERIFYPEER] = $this->sslVerifyCert;
+ }
+
+ 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 ( $this->followRedirects && $this->canFollowRedirects() ) {
+ if ( ! @curl_setopt( $curlHandle, CURLOPT_FOLLOWLOCATION, true ) ) {
+ wfDebug( __METHOD__ . ": Couldn't set CURLOPT_FOLLOWLOCATION. " .
+ "Probably safe_mode or open_basedir is set.\n" );
+ // 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;
+ }
+
+ public function canFollowRedirects() {
+ if ( strval( ini_get( 'open_basedir' ) ) !== '' || wfIniGetBool( 'safe_mode' ) ) {
+ wfDebug( "Cannot follow redirects in safe mode\n" );
+ return false;
+ }
+
+ if ( !defined( 'CURLOPT_REDIR_PROTOCOLS' ) ) {
+ wfDebug( "Cannot follow redirects with libcurl < 7.19.4 due to CVE-2009-0037\n" );
+ return false;
+ }
+
+ return true;
}
- return false;
}
-?>
+class PhpHttpRequest extends MWHttpRequest {
+ 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
+ $manuallyRedirect = version_compare( phpversion(), '5.1.7', '<' );
+
+ if ( $this->parsedUrl['scheme'] != 'http' &&
+ $this->parsedUrl['scheme'] != 'https' ) {
+ $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 || $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 {
+ $reqCount++;
+ wfSuppressWarnings();
+ $fh = fopen( $url, "r", false, $context );
+ wfRestoreWarnings();
+
+ if ( !$fh ) {
+ break;
+ }
+
+ $result = stream_get_meta_data( $fh );
+ $this->headerList = $result['wrapper_data'];
+ $this->parseHeader();
+
+ if ( !$manuallyRedirect || !$this->followRedirects ) {
+ break;
+ }
+
+ # Handle manual redirection
+ if ( !$this->isRedirect() || $reqCount > $this->maxRedirects ) {
+ break;
+ }
+ # Check security of URL
+ $url = $this->getResponseHeader( "Location" );
+
+ if ( substr( $url, 0, 7 ) !== 'http://' ) {
+ wfDebug( __METHOD__ . ": insecure redirection\n" );
+ break;
+ }
+ } while ( true );
+
+ 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;
+ }
+}
scripts.mit.edu / autoinstallsdev / mediawiki.git / blobdiff