remove duplicate gzdecode

diff --git a/include/functions.php b/include/functions.php
index 7fa2003228dc059bf88515f9237365f18fa2ae07..0e5d15eaffbcc7e5f08ea5b0300c46cec7bcde6b 100644 (file)
--- a/include/functions.php
+++ b/include/functions.php
@@ -4029,123 +4029,4 @@
                return $rv;
        }
 
-       // http://php.net/gzencode
-       function gzdecode($data) {
-               $len = strlen($data);
-               if ($len < 18 || strcmp(substr($data,0,2),"\x1f\x8b")) {
-                       return null;    // Not GZIP format (See RFC 1952)
-               }
-               $method = ord(substr($data,2,1));       // Compression method
-               $flags  = ord(substr($data,3,1));       // Flags
-               if ($flags & 31 != $flags) {
-                       // Reserved bits are set -- NOT ALLOWED by RFC 1952
-                       return null;
-               }
-               // NOTE: $mtime may be negative (PHP integer limitations)
-               $mtime = unpack("V", substr($data,4,4));
-               $mtime = $mtime[1];
-               $xfl     = substr($data,8,1);
-               $os             = substr($data,8,1);
-               $headerlen = 10;
-               $extralen       = 0;
-               $extra           = "";
-               if ($flags & 4) {
-                       // 2-byte length prefixed EXTRA data in header
-                       if ($len - $headerlen - 2 < 8) {
-                               return false;           // Invalid format
-                       }
-                       $extralen = unpack("v",substr($data,8,2));
-                       $extralen = $extralen[1];
-                       if ($len - $headerlen - 2 - $extralen < 8) {
-                               return false;           // Invalid format
-                       }
-                       $extra = substr($data,10,$extralen);
-                       $headerlen += 2 + $extralen;
-               }
-
-               $filenamelen = 0;
-               $filename = "";
-               if ($flags & 8) {
-                       // C-style string file NAME data in header
-                       if ($len - $headerlen - 1 < 8) {
-                               return false;           // Invalid format
-                       }
-                       $filenamelen = strpos(substr($data,8+$extralen),chr(0));
-                       if ($filenamelen === false || $len - $headerlen - $filenamelen - 1 < 8) {
-                               return false;           // Invalid format
-                       }
-                       $filename = substr($data,$headerlen,$filenamelen);
-                       $headerlen += $filenamelen + 1;
-               }
-
-               $commentlen = 0;
-               $comment = "";
-               if ($flags & 16) {
-                       // C-style string COMMENT data in header
-                       if ($len - $headerlen - 1 < 8) {
-                               return false;           // Invalid format
-                       }
-                       $commentlen = strpos(substr($data,8+$extralen+$filenamelen),chr(0));
-                       if ($commentlen === false || $len - $headerlen - $commentlen - 1 < 8) {
-                               return false;           // Invalid header format
-                       }
-                       $comment = substr($data,$headerlen,$commentlen);
-                       $headerlen += $commentlen + 1;
-               }
-
-               $headercrc = "";
-               if ($flags & 1) {
-                       // 2-bytes (lowest order) of CRC32 on header present
-                       if ($len - $headerlen - 2 < 8) {
-                               return false;           // Invalid format
-                       }
-                       $calccrc = crc32(substr($data,0,$headerlen)) & 0xffff;
-                       $headercrc = unpack("v", substr($data,$headerlen,2));
-                       $headercrc = $headercrc[1];
-                       if ($headercrc != $calccrc) {
-                               return false;           // Bad header CRC
-                       }
-                       $headerlen += 2;
-               }
-
-               // GZIP FOOTER - These be negative due to PHP's limitations
-               $datacrc = unpack("V",substr($data,-8,4));
-               $datacrc = $datacrc[1];
-               $isize = unpack("V",substr($data,-4));
-               $isize = $isize[1];
-
-               // Perform the decompression:
-               $bodylen = $len-$headerlen-8;
-               if ($bodylen < 1) {
-                       // This should never happen - IMPLEMENTATION BUG!
-                       return null;
-               }
-               $body = substr($data,$headerlen,$bodylen);
-               $data = "";
-               if ($bodylen > 0) {
-                       switch ($method) {
-                               case 8:
-                                       // Currently the only supported compression method:
-                                       $data = gzinflate($body);
-                                       break;
-                               default:
-                                       // Unknown compression method
-                                       return false;
-                       }
-               } else {
-                       // I'm not sure if zero-byte body content is allowed.
-                       // Allow it for now...  Do nothing...
-               }
-
-               // Verifiy decompressed size and CRC32:
-               // NOTE: This may fail with large data sizes depending on how
-               //                       PHP's integer limitations affect strlen() since $isize
-               //                       may be negative for large sizes.
-               if ($isize != strlen($data) || crc32($data) != $datacrc) {
-                       // Bad format!  Length or CRC doesn't match!
-                       return false;
-               }
-               return $data;
-       }
-
 ?>