src/Helper/Http.php

   1 <?php
   2
   3 namespace PhpXmlRpc\Helper;
   4
   5 class Http
   6 {
   7     /**
   8      * decode a string that is encoded w/ "chunked" transfer encoding
   9      * as defined in rfc2068 par. 19.4.6
  10      * code shamelessly stolen from nusoap library by Dietrich Ayala
  11      *
  12      * @param string $buffer the string to be decoded
  13      * @return string
  14      */
  15     public static function decode_chunked($buffer)
  16     {
  17         // length := 0
  18         $length = 0;
  19         $new = '';
  20
  21         // read chunk-size, chunk-extension (if any) and crlf
  22         // get the position of the linebreak
  23         $chunkend = strpos($buffer,"\r\n") + 2;
  24         $temp = substr($buffer,0,$chunkend);
  25         $chunk_size = hexdec( trim($temp) );
  26         $chunkstart = $chunkend;
  27         while($chunk_size > 0)
  28         {
  29             $chunkend = strpos($buffer, "\r\n", $chunkstart + $chunk_size);
  30
  31             // just in case we got a broken connection
  32             if($chunkend == false)
  33             {
  34                 $chunk = substr($buffer,$chunkstart);
  35                 // append chunk-data to entity-body
  36                 $new .= $chunk;
  37                 $length += strlen($chunk);
  38                 break;
  39             }
  40
  41             // read chunk-data and crlf
  42             $chunk = substr($buffer,$chunkstart,$chunkend-$chunkstart);
  43             // append chunk-data to entity-body
  44             $new .= $chunk;
  45             // length := length + chunk-size
  46             $length += strlen($chunk);
  47             // read chunk-size and crlf
  48             $chunkstart = $chunkend + 2;
  49
  50             $chunkend = strpos($buffer,"\r\n",$chunkstart)+2;
  51             if($chunkend == false)
  52             {
  53                 break; //just in case we got a broken connection
  54             }
  55             $temp = substr($buffer,$chunkstart,$chunkend-$chunkstart);
  56             $chunk_size = hexdec( trim($temp) );
  57             $chunkstart = $chunkend;
  58         }
  59         return $new;
  60     }
  61
  62 }