1 files changed, 91 insertions, 0 deletions
diff --git a/includes/HttpFunctions.php b/includes/HttpFunctions.php
new file mode 100644
index 00000000..a9fb13ca
--- /dev/null
+++ b/includes/HttpFunctions.php
@@ -0,0 +1,91 @@
+<?php
+
+/**
+ * Various HTTP related functions
+ */
+class Http {
+	/**
+	 * Get the contents of a file by HTTP
+	 *
+	 * if $timeout is 'default', $wgHTTPTimeout is used
+	 */
+	static function get( $url, $timeout = 'default' ) {
+		global $wgHTTPTimeout, $wgHTTPProxy, $wgVersion, $wgTitle;
+
+		# 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 );
+			curl_setopt( $c, CURLOPT_USERAGENT, "MediaWiki/$wgVersion" );
+
+			# Set the referer to $wgTitle, even in command-line mode
+			# This is useful for interwiki transclusion, where the foreign
+			# server wants to know what the referring page is.
+			# $_SERVER['REQUEST_URI'] gives a less reliable indication of the
+			# referring page.
+			if ( is_object( $wgTitle ) ) {
+				curl_setopt( $c, CURLOPT_REFERER, $wgTitle->getFullURL() );
+			}
+
+			ob_start();
+			curl_exec( $c );
+			$text = ob_get_contents();
+			ob_end_clean();
+
+			# Don't return the text of error messages, return false on error
+			if ( curl_getinfo( $c, CURLINFO_HTTP_CODE ) != 200 ) {
+				$text = false;
+			}
+			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;
+	}
+
+	/**
+	 * Check if the URL can be served by localhost
+	 */
+	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;
+	}
+}
+?>