Файл: forum/attach_mod/includes/functions_filetypes.php
Строк: 133
<?php
/***************************************************************************
* functions_filetypes.php
* -------------------
* begin : Sat, Jul 27, 2002
* copyright : (C) 2002 Meik Sievertsen
* email : acyd.burn@gmx.de
*
* $Id: functions_filetypes.php,v 1.1.1.1 2005/09/13 05:58:17 eugene Exp $
*
*
***************************************************************************/
/***************************************************************************
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
*
***************************************************************************/
//
// All Attachment Functions needed to determine Special Files/Dimensions
//
//
// Read Long Int (4 Bytes) from File
//
function read_longint($fp)
{
$data = fread($fp, 4);
$value = ord($data[0]) + (ord($data[1])<<8)+(ord($data[2])<<16)+(ord($data[3])<<24);
if ($value >= 4294967294)
{
$value -= 4294967296;
}
return ($value);
}
//
// Read Word (2 Bytes) from File - Note: It's an Intel Word
//
function read_word($fp)
{
$data = fread($fp, 2);
$value = ord($data[1]) * 256 + ord($data[0]);
return ($value);
}
//
// Read Byte
//
function read_byte($fp)
{
$data = fread($fp, 1);
$value = ord($data);
return ($value);
}
//
// Get Image Dimensions
//
function image_getdimension($file)
{
$size = @getimagesize($file);
if ( ($size[0] != 0) || ($size[1] != 0) )
{
return ($size);
}
// Try to get the Dimension manually, depending on the mimetype
$fp = @fopen($file, 'rb');
if (!$fp)
{
return ($size);
}
$error = FALSE;
//
// BMP - IMAGE
//
$tmp_str = fread($fp, 2);
if ($tmp_str == 'BM')
{
$length = read_longint($fp);
if ($length <= 6)
{
$error = TRUE;
}
if (!$error)
{
$i = read_longint($fp);
if ( $i != 0)
{
$error = TRUE;
}
}
if (!$error)
{
$i = read_longint($fp);
if ( ($i != 0x3E) && ($i != 0x76) && ($i != 0x436) && ($i != 0x36) )
{
$error = TRUE;
}
}
if (!$error)
{
$tmp_str = fread($fp, 4);
$width = read_longint($fp);
$height = read_longint($fp);
if ( ($width > 3000) || ($height > 3000) )
{
$error = TRUE;
}
}
}
else
{
$error = TRUE;
}
if (!$error)
{
fclose($fp);
return array(
$width,
$height,
'6'
);
}
$error = FALSE;
fclose($fp);
//
// GIF - IMAGE
//
$fp = @fopen($file, 'rb');
$tmp_str = fread($fp, 3);
if ($tmp_str == 'GIF')
{
$tmp_str = fread($fp, 3);
$width = read_word($fp);
$height = read_word($fp);
$info_byte = fread($fp, 1);
$info_byte = ord($info_byte);
if ( (($info_byte & 0x80) != 0x80) && (($info_byte & 0x80) != 0) )
{
$error = TRUE;
}
if (!$error)
{
if (($info_byte & 8) != 0)
{
$error = TRUE;
}
}
}
else
{
$error = TRUE;
}
if (!$error)
{
fclose($fp);
return array(
$width,
$height,
'1'
);
}
$error = FALSE;
fclose($fp);
//
// JPG - IMAGE
//
$fp = @fopen($file, 'rb');
$tmp_str = fread($fp, 4);
$w1 = read_word($fp);
if (intval($w1) < 16)
{
$error = TRUE;
}
if (!$error)
{
$tmp_str = fread($fp, 4);
if ($tmp_str == 'JFIF')
{
$o_byte = fread($fp, 1);
if (intval($o_byte) != 0)
{
$error = TRUE;
}
if (!$error)
{
$str = fread($fp, 2);
$b = read_byte($fp);
if ( ( $b != 0) && ($b != 1) && ($b != 2) )
{
$error = TRUE;
}
}
if (!$error)
{
$width = read_word($fp);
$height = read_word($fp);
if ( ($width <= 0) || ($height <= 0) )
{
$error = TRUE;
}
}
}
}
else
{
$error = TRUE;
}
if (!$error)
{
fclose($fp);
return array(
$width,
$height,
'2'
);
}
$error = FALSE;
fclose($fp);
//
// PCX - IMAGE
//
$fp = @fopen($file, 'rb');
$tmp_str = fread($fp, 3);
if ( ((ord($tmp_str[0]) == 10)) && ( (ord($tmp_str[1]) == 0) || (ord($tmp_str[1]) == 2) || (ord($tmp_str[1]) == 3) || (ord($tmp_str[1]) == 4) || (ord($tmp_str[1]) == 5) ) && ( (ord($tmp_str[2]) == 1) ) )
{
$b = fread($fp, 1);
if ( (ord($b) != 1) && (ord($b) != 2) && (ord($b) != 4) && (ord($b) != 8) && (ord($b) != 24) )
{
$error = TRUE;
}
if (!$error)
{
$xmin = read_word($fp);
$ymin = read_word($fp);
$xmax = read_word($fp);
$ymax = read_word($fp);
$tmp_str = fread($fp, 52);
$b = fread($fp, 1);
if ($b != 0)
{
$error = TRUE;
}
}
if (!$error)
{
$width = $xmax - $xmin + 1;
$height = $ymax - $ymin + 1;
}
}
else
{
$error = TRUE;
}
if (!$error)
{
fclose($fp);
return array(
$width,
$height,
'7'
);
}
fclose($fp);
return ($size);
}
//
// Flash MX Support
// Routines and Methods are from PhpAdsNew (www.sourceforge.net/projects/phpadsnew)
//
define('swf_tag_compressed', chr(0x43).chr(0x57).chr(0x53));
define('swf_tag_identify', chr(0x46).chr(0x57).chr(0x53));
function swf_bits($buffer, $pos, $count)
{
$result = 0;
for ($loop = $pos; $loop < $pos + $count; $loop++)
{
$result = $result + ((((ord($buffer[(int)($loop / 8)])) >> (7 - ($loop % 8))) & 0x01) << ($count - ($loop - $pos) - 1));
}
return $result;
}
function swf_decompress($buffer)
{
if ((function_exists('gzuncompress')) && (substr($buffer, 0, 3) == swf_tag_compressed) && (ord(substr($buffer, 3, 1)) >= 6) )
{
// Only decompress relevant Informations
$output = 'F';
$output .= substr ($buffer, 1, 7);
$output .= gzuncompress (substr ($buffer, 8));
return ($output);
}
else
{
return ($buffer);
}
}
function swf_getdimension($file)
{
$size = @getimagesize($file);
if ( ($size[0] != 0) || ($size[1] != 0) )
{
return ($size);
}
// Try to get the Dimension manually
$fp = @fopen($file, 'rb');
if (!$fp)
{
return ($size);
}
$error = FALSE;
//
// SWF - FLASH FILE
//
$fp = @fopen($file, 'rb');
// Decompress if file is a Flash MX compressed file
$buffer = fread($fp, 1024);
if ( (substr($buffer, 0, 3) == swf_tag_identify) || (substr($buffer, 0, 3) == swf_tag_compressed) )
{
if (substr($buffer, 0, 3) == swf_tag_compressed)
{
fclose($fp);
$fp = @fopen($file, 'rb');
$buffer = fread($fp, filesize($file));
$buffer = swf_decompress($buffer);
}
// Get size of rect structure
$bits = swf_bits ($buffer, 64, 5);
// Get rect
$width = (int)(swf_bits ($buffer, 69 + $bits, $bits) - swf_bits ($buffer, 69, $bits)) / 20;
$height = (int)(swf_bits ($buffer, 69 + (3 * $bits), $bits) - swf_bits ($buffer, 69 + (2 * $bits), $bits)) / 20;
}
else
{
$error = TRUE;
}
if (!$error)
{
fclose($fp);
return array(
$width,
$height,
'2'
);
}
fclose($fp);
return ($size);
}
?>