extractIcoFromExe.php

<?php

// Code snippet to extract the icon from an exe file on a Linux system -- tested on Debian Wheezy

// Install icoutils on your system e.g. sudo apt-get install icoutils
// Web process must have write privileges to /tmp

///** Config **///

$input_file = '/path/to/program.exe';
$dest_file = '/path/to/image.png';
$dest_size = 64; // Will get the best quality icon at or below this size.

///** End Config **///


$temp_dir_base = '/tmp/iconextract/';
$tmp_offset = 0;
while(file_exists($temp_dir_base.$tmp_offset.'/')){ //Ensure working directory is empty
    $tmp_offset += 1;
}

$tmp_dir = $temp_dir_base.$tmp_offset.'/';

mkdir($tmp_dir,0777,true);  //Create a temporary folder to work in
exec('wrestool -x '.str_replace(' ','\\',$input_file).' -o '.$tmp_dir); //Extract ico files
$icon_files = glob($tmp_dir.'*.ico'); //Find all ico files

$max = 0;
$file = 0;
$index = 0;
foreach($icon_files as $file_offset=>$ico){ //loop each match
    exec('icotool -l '.$ico.' --icon',$list); //get each icon inside the file
    foreach($list as $i){ //Loop through each icon
        preg_match_all('/--index=(?P<index>\d+) --width=(?P<width>\d+) --height=(?P<height>\d+)/',$i,$a);
        if($a['width'][0] > $max and $a['width'][0] <= $dest_size){
            $max = $a['width'][0];
            $index = $a['index'][0];
            $file = $file_offset;
        }
    }
}

if($max > 0){ //If we found one, extract it to the destination
    exec('icotool -x '.$icon_files[$file].' -i '.$index.' -o '.str_replace(' ','\\',$dest_file));
}
else{
    exec('rm '.$tmp_dir.' -r'); //Clean out tmp files
    $error = "Could not find a sutiable icon file";
    throw new Exception($error);
}
exec('rm /tmp/iconextract -r'); //Clean out tmp files

?>