includes/HttpFunctions.php

   1 <?php
   2
   3 /**
   4  * Get the contents of a file by HTTP
   5  *
   6  * if $timeout is 'default', $wgHTTPTimeout is used
   7  */
   8 function wfGetHTTP( $url, $timeout = 'default' ) {
   9         global $wgServer, $wgHTTPTimeout;
  10
  11
  12         # Use curl if available
  13         if ( function_exists( 'curl_init' ) ) {
  14                 $c = curl_init( $url );
  15                 if ( wfIsLocalURL( $url ) ) {
  16                         curl_setopt( $c, CURLOPT_PROXY, 'localhost:80' );
  17                 }
  18                 if ( $timeout == 'default' ) {
  19                         $timeout = $wgHTTPTimeout;
  20                 }
  21                 curl_setopt( $c, CURLOPT_TIMEOUT, $timeout );
  22                 ob_start();
  23                 curl_exec();
  24                 $text = ob_get_contents();
  25                 ob_end_clean();
  26         } else {
  27                 # Otherwise use file_get_contents, or its compatibility function from GlobalFunctions.php
  28                 # This may take 3 minutes to time out, and doesn't have local fetch capabilities
  29                 $url_fopen = ini_set( 'allow_url_fopen', 1 );
  30                 $text = file_get_contents( $url );
  31                 ini_set( 'allow_url_fopen', $url_fopen );
  32         }
  33         return $text;
  34 }
  35
  36 /**
  37  * Check if the URL can be served by localhost
  38  */
  39 function wfIsLocalURL( $url ) {
  40         global $wgConf;
  41         // Extract host part
  42         if ( preg_match( '!^http://([\w.-]+)[/:].*$!', $url, $matches ) ) {
  43                 $host = $matches[1];
  44                 // Split up dotwise
  45                 $domainParts = explode( '.', $host );
  46                 // Check if this domain or any superdomain is listed in $wgConf as a local virtual host
  47                 $domainParts = array_reverse( $domainParts );
  48                 for ( $i = 0; $i < count( $domainParts ); $i++ ) {
  49                         $domainPart = $domainParts[$i];
  50                         if ( $i == 0 ) {
  51                                 $domain = $domainPart;
  52                         } else {
  53                                 $domain = $domainPart . '.' . $domain;
  54                         }
  55                         if ( $wgConf->isLocalVHost( $domain ) ) {
  56                                 return true;
  57                         }
  58                 }
  59         }
  60         return false;
  61 }
  62
  63 ?>