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 $wgHTTPTimeout, $wgHTTPProxy;
  13
  14         # Use curl if available
  15         if ( function_exists( 'curl_init' ) ) {
  16                 $c = curl_init( $url );
  17                 if ( wfIsLocalURL( $url ) ) {
  18                         curl_setopt( $c, CURLOPT_PROXY, 'localhost:80' );
  19                 } else if ($wgHTTPProxy)
  20                         curl_setopt($c, CURLOPT_PROXY, $wgHTTPProxy);
  21
  22                 if ( $timeout == 'default' ) {
  23                         $timeout = $wgHTTPTimeout;
  24                 }
  25                 curl_setopt( $c, CURLOPT_TIMEOUT, $timeout );
  26                 ob_start();
  27                 curl_exec( $c );
  28                 $text = ob_get_contents();
  29                 ob_end_clean();
  30
  31                 # Don't return the text of error messages, return false on error
  32                 if ( curl_getinfo( $c, CURLINFO_HTTP_CODE ) != 200 ) {
  33                         $text = false;
  34                 }
  35                 curl_close( $c );
  36         } else {
  37                 # Otherwise use file_get_contents, or its compatibility function from GlobalFunctions.php
  38                 # This may take 3 minutes to time out, and doesn't have local fetch capabilities
  39                 $url_fopen = ini_set( 'allow_url_fopen', 1 );
  40                 $text = file_get_contents( $url );
  41                 ini_set( 'allow_url_fopen', $url_fopen );
  42         }
  43         return $text;
  44 }
  45
  46 /**
  47  * Check if the URL can be served by localhost
  48  */
  49 function wfIsLocalURL( $url ) {
  50         global $wgCommandLineMode, $wgConf;
  51         if ( $wgCommandLineMode ) {
  52                 return false;
  53         }
  54
  55         // Extract host part
  56         if ( preg_match( '!^http://([\w.-]+)[/:].*$!', $url, $matches ) ) {
  57                 $host = $matches[1];
  58                 // Split up dotwise
  59                 $domainParts = explode( '.', $host );
  60                 // Check if this domain or any superdomain is listed in $wgConf as a local virtual host
  61                 $domainParts = array_reverse( $domainParts );
  62                 for ( $i = 0; $i < count( $domainParts ); $i++ ) {
  63                         $domainPart = $domainParts[$i];
  64                         if ( $i == 0 ) {
  65                                 $domain = $domainPart;
  66                         } else {
  67                                 $domain = $domainPart . '.' . $domain;
  68                         }
  69                         if ( $wgConf->isLocalVHost( $domain ) ) {
  70                                 return true;
  71                         }
  72                 }
  73         }
  74         return false;
  75 }
  76
  77 ?>