includes/HttpFunctions.php

   1 <?php
   2 /**
   3  * Various HTTP related functions
   4  */
   5
   6 /**
   7  * Get the contents of a file by HTTP
   8  *
   9  * if $timeout is 'default', $wgHTTPTimeout is used
  10  */
  11 function wfGetHTTP( $url, $timeout = 'default' ) {
  12         global $wgServer, $wgHTTPTimeout, $wgHTTPProxy;
  13
  14
  15         # Use curl if available
  16         if ( function_exists( 'curl_init' ) ) {
  17                 $c = curl_init( $url );
  18                 if ( wfIsLocalURL( $url ) ) {
  19                         curl_setopt( $c, CURLOPT_PROXY, 'localhost:80' );
  20                 } else if ($wgHTTPProxy)
  21                         curl_setopt($c, CURLOPT_PROXY, $wgHTTPProxy);
  22
  23                 if ( $timeout == 'default' ) {
  24                         $timeout = $wgHTTPTimeout;
  25                 }
  26                 curl_setopt( $c, CURLOPT_TIMEOUT, $timeout );
  27                 ob_start();
  28                 curl_exec( $c );
  29                 $text = ob_get_contents();
  30                 ob_end_clean();
  31                 curl_close( $c );
  32         } else {
  33                 # Otherwise use file_get_contents, or its compatibility function from GlobalFunctions.php
  34                 # This may take 3 minutes to time out, and doesn't have local fetch capabilities
  35                 $url_fopen = ini_set( 'allow_url_fopen', 1 );
  36                 $text = file_get_contents( $url );
  37                 ini_set( 'allow_url_fopen', $url_fopen );
  38         }
  39         return $text;
  40 }
  41
  42 /**
  43  * Check if the URL can be served by localhost
  44  */
  45 function wfIsLocalURL( $url ) {
  46         global $wgConf;
  47         // Extract host part
  48         if ( preg_match( '!^http://([\w.-]+)[/:].*$!', $url, $matches ) ) {
  49                 $host = $matches[1];
  50                 // Split up dotwise
  51                 $domainParts = explode( '.', $host );
  52                 // Check if this domain or any superdomain is listed in $wgConf as a local virtual host
  53                 $domainParts = array_reverse( $domainParts );
  54                 for ( $i = 0; $i < count( $domainParts ); $i++ ) {
  55                         $domainPart = $domainParts[$i];
  56                         if ( $i == 0 ) {
  57                                 $domain = $domainPart;
  58                         } else {
  59                                 $domain = $domainPart . '.' . $domain;
  60                         }
  61                         if ( $wgConf->isLocalVHost( $domain ) ) {
  62                                 return true;
  63                         }
  64                 }
  65         }
  66         return false;
  67 }
  68
  69 ?>