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
  32                 # Don't return the text of error messages, return false on error
  33                 if ( curl_getinfo( $c, CURLINFO_HTTP_CODE ) != 200 ) {
  34                         $text = false;
  35                 }
  36                 curl_close( $c );
  37         } else {
  38                 # Otherwise use file_get_contents, or its compatibility function from GlobalFunctions.php
  39                 # This may take 3 minutes to time out, and doesn't have local fetch capabilities
  40                 $url_fopen = ini_set( 'allow_url_fopen', 1 );
  41                 $text = file_get_contents( $url );
  42                 ini_set( 'allow_url_fopen', $url_fopen );
  43         }
  44         return $text;
  45 }
  46
  47 /**
  48  * Check if the URL can be served by localhost
  49  */
  50 function wfIsLocalURL( $url ) {
  51         global $wgCommandLineMode, $wgConf;
  52         if ( $wgCommandLineMode ) {
  53                 return false;
  54         }
  55
  56         // Extract host part
  57         if ( preg_match( '!^http://([\w.-]+)[/:].*$!', $url, $matches ) ) {
  58                 $host = $matches[1];
  59                 // Split up dotwise
  60                 $domainParts = explode( '.', $host );
  61                 // Check if this domain or any superdomain is listed in $wgConf as a local virtual host
  62                 $domainParts = array_reverse( $domainParts );
  63                 for ( $i = 0; $i < count( $domainParts ); $i++ ) {
  64                         $domainPart = $domainParts[$i];
  65                         if ( $i == 0 ) {
  66                                 $domain = $domainPart;
  67                         } else {
  68                                 $domain = $domainPart . '.' . $domain;
  69                         }
  70                         if ( $wgConf->isLocalVHost( $domain ) ) {
  71                                 return true;
  72                         }
  73                 }
  74         }
  75         return false;
  76 }
  77
  78 ?>