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<?php // $Revision: 1.3 $
/************************************************************************/
/* phpAdsNew 2 */
/* =========== */
/* */
/* Copyright (c) 2001 by the phpAdsNew developers */
/* http://sourceforge.net/projects/phpadsnew */
/* */
/* 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. */
/************************************************************************/
// Define SWF tags
define ('swf_tag_identify', chr(0x46).chr(0x57).chr(0x53));
define ('swf_tag_compressed', chr(0x43).chr(0x57).chr(0x53));
define ('swf_tag_geturl', chr(0x00).chr(0x83));
define ('swf_tag_null', chr(0x00));
define ('swf_tag_actionpush', chr(0x96));
define ('swf_tag_actiongetvariable', chr(0x1C));
define ('swf_tag_actiongeturl2', chr(0x9A).chr(0x01));
// Define preferences
$swf_variable = 'alink'; // The name of the ActionScript variable
$swf_default_target = '_blank'; // If set it will replace the targets, otherwise leave empty
/*********************************************************/
/* Get the Flash version of the banner */
/*********************************************************/
function phpAds_SWFVersion($buffer)
{
if (substr($buffer, 0, 3) == swf_tag_identify ||
substr($buffer, 0, 3) == swf_tag_compressed)
return ord(substr($buffer, 3, 1));
else
return false;
}
/*********************************************************/
/* Is the Flash file compressed? */
/*********************************************************/
function phpAds_SWFCompressed($buffer)
{
if (substr($buffer, 0, 3) == swf_tag_compressed)
return true;
else
return false;
}
/*********************************************************/
/* Compress Flash file */
/*********************************************************/
function phpAds_SWFCompress($buffer)
{
if (function_exists('gzcompress') &&
substr($buffer, 0, 3) == swf_tag_identify &&
ord(substr($buffer, 3, 1)) >= 6)
{
$output = 'C';
$output .= substr ($buffer, 1, 7);
$output .= gzcompress (substr ($buffer, 8));
return ($output);
}
else
return ($buffer);
}
/*********************************************************/
/* Decompress Flash file */
/*********************************************************/
function phpAds_SWFDecompress($buffer)
{
if (function_exists('gzuncompress') &&
substr($buffer, 0, 3) == swf_tag_compressed &&
ord(substr($buffer, 3, 1)) >= 6)
{
$output = 'F';
$output .= substr ($buffer, 1, 7);
$output .= gzuncompress (substr ($buffer, 8));
return ($output);
}
else
return ($buffer);
}
/*********************************************************/
/* Get the dimensions of the Flash banner */
/*********************************************************/
function phpAds_SWFBits($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 $result;
}
function phpAds_SWFDimensions($buffer)
{
// Decompress if file is a Flash MX compressed file
if (phpAds_SWFCompressed($buffer))
$buffer = phpAds_SWFDecompress($buffer);
// Get size of rect structure
$bits = phpAds_SWFBits ($buffer, 64, 5);
// Get rect
$width = (int)(phpAds_SWFBits ($buffer, 69 + $bits, $bits) - phpAds_SWFBits ($buffer, 69, $bits)) / 20;
$height = (int)(phpAds_SWFBits ($buffer, 69 + (3 * $bits), $bits) - phpAds_SWFBits ($buffer, 69 + (2 * $bits), $bits)) / 20;
return (
array($width, $height)
);
}
/*********************************************************/
/* Get info about the hardcoded urls */
/*********************************************************/
function phpAds_SWFInfo($buffer)
{
global $swf_default_target;
global $swf_variable;
// Decompress if file is a Flash MX compressed file
if (phpAds_SWFCompressed($buffer))
$buffer = phpAds_SWFDecompress($buffer);
$parameters = array();
$pos = 0;
while ($result = strpos($buffer, swf_tag_geturl, $pos))
{
$result++;
if (strtolower(substr($buffer, $result + 3, 7)) == 'http://' ||
strtolower(substr($buffer, $result + 3, 11)) == 'javascript:')
{
$parameter_length = ord(substr($buffer, $result + 1, 1));
$parameter_total = substr($buffer, $result + 3, $parameter_length);
$parameter_split = strpos($parameter_total, swf_tag_null);
$parameter_url = substr($parameter_total, 0, $parameter_split);
$parameter_target = substr($parameter_total, $parameter_split + 1, strlen($parameter_total) - $parameter_split - 2);
if ($swf_default_target)
$parameter_target = $swf_default_target;
$replacement = swf_tag_actionpush.chr(strlen($swf_variable)+2).swf_tag_null.swf_tag_null.$swf_variable.swf_tag_null.
swf_tag_actiongetvariable.
swf_tag_actionpush.chr(strlen($parameter_target)+2).swf_tag_null.swf_tag_null.$parameter_target.swf_tag_null.
swf_tag_actiongeturl2;
if (strlen($replacement) > $parameter_length + 3)
{
break;
}
else
{
$parameters[] = array(
$result, $parameter_url, $parameter_target
);
}
}
$pos = $result;
}
if (count($parameters))
return ($parameters);
else
return false;
}
/*********************************************************/
/* Convert hard coded urls */
/*********************************************************/
function phpAds_SWFConvert($buffer)
{
global $swf_default_target;
global $swf_variable;
// Decompress if file is a Flash MX compressed file
if (phpAds_SWFCompressed($buffer))
{
$compress = true;
$buffer = phpAds_SWFDecompress($buffer);
}
else
$compress = false;
$parameters = array();
$pos = 0;
$linkcount = 1;
while ($result = strpos($buffer, swf_tag_geturl, $pos))
{
$result++;
if (strtolower(substr($buffer, $result + 3, 7)) == 'http://' ||
strtolower(substr($buffer, $result + 3, 11)) == 'javascript:')
{
$parameter_length = ord(substr($buffer, $result + 1, 1));
$parameter_total = substr($buffer, $result + 3, $parameter_length);
$parameter_split = strpos($parameter_total, swf_tag_null);
$parameter_url = substr($parameter_total, 0, $parameter_split);
$parameter_target = substr($parameter_total, $parameter_split + 1, strlen($parameter_total) - $parameter_split - 2);
if ($swf_default_target)
$parameter_target = $swf_default_target;
$replacement = swf_tag_actionpush.chr(strlen($swf_variable.$linkcount)+2).swf_tag_null.swf_tag_null.$swf_variable.$linkcount.swf_tag_null.
swf_tag_actiongetvariable.
swf_tag_actionpush.chr(strlen($parameter_target)+2).swf_tag_null.swf_tag_null.$parameter_target.swf_tag_null.
swf_tag_actiongeturl2;
if (strlen($replacement) > $parameter_length + 3)
{
break;
}
elseif (strlen($replacement) < $parameter_length + 3)
{
$padding = $parameter_length + 3 - strlen($replacement);
for ($i=0;$i<$padding;$i++)
{
$replacement .= swf_tag_null;
}
}
$replacement = substr($buffer, 0, $result).
$replacement.
substr($buffer, $result + strlen($replacement), strlen($buffer) - ($result + strlen($replacement)));
$buffer = $replacement;
$parameters[] = $parameter_url;
$linkcount++;
}
$pos = $result;
}
if ($compress == true)
$buffer = phpAds_SWFCompress($buffer);
return (array($buffer, $parameters));
}
?>
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