Get Version of exe via PHP

Question

Is getting the version of a exe possible with php? I'd like to print the version of a file that can be downloaded...

Windows exe and php is running on linux server

Answer 1

I wanted the same thing, so I coded this: It returns FALSE, if it can't get the version info, or an ARRAY of four elements with file version fields (numbers, which are separated by .) It works only for 32-bit PE files (as I had no need for other formats).

function GetFileVersion($FileName)
{
    $handle = fopen($FileName, 'rb');
    if(!$handle)
    {
        return FALSE;
    }
    $Header = fread($handle, 64);
    if(substr($Header, 0, 2) != 'MZ')
    {
        return FALSE;
    }
    $PEOffset = unpack("V", substr($Header, 60, 4));
    if($PEOffset[1] < 64)
    {
        return FALSE;        
    }
    fseek($handle, $PEOffset[1], SEEK_SET);
    $Header = fread($handle, 24);
    if(substr($Header, 0, 2) != 'PE')
    {
        return FALSE;
    }
    $Machine = unpack("v", substr($Header, 4, 2));
    if($Machine[1] != 332)
    {        
        return FALSE;
    }
    $NoSections = unpack("v", substr($Header, 6, 2));
    $OptHdrSize = unpack("v", substr($Header, 20, 2));
    fseek($handle, $OptHdrSize[1], SEEK_CUR);
    $ResFound = FALSE;
    for ($x = 0; $x < $NoSections[1]; $x++)
    {
        $SecHdr = fread($handle, 40);
        if (substr($SecHdr, 0, 5) == '.rsrc')
        {
            $ResFound = TRUE;
            break;
        }
    }
    if(!$ResFound)
    {        
      return FALSE;
    }
    $InfoVirt = unpack("V", substr($SecHdr, 12, 4));
    $InfoSize = unpack("V", substr($SecHdr, 16, 4));
    $InfoOff = unpack("V", substr($SecHdr, 20, 4));
    fseek($handle, $InfoOff[1], SEEK_SET);
    $Info = fread($handle, $InfoSize[1]);
    $NumDirs = unpack("v", substr($Info, 14, 2));
    $InfoFound = FALSE;
    for ($x = 0; $x <$NumDirs[1]; $x++)
    {
        $Type = unpack("V", substr($Info, ($x * 8) + 16, 4));
        if($Type[1] == 16)
        {
            //FILEINFO resource
            $InfoFound = TRUE;
            $SubOff = unpack("V", substr($Info, ($x * 8) + 20, 4));
            break;
        }
    }
    if (!$InfoFound)
    {        
        return FALSE;
    }
    $SubOff[1] &= 0x7fffffff;
    $InfoOff = unpack("V", substr($Info, $SubOff[1] + 20, 4)); //offset of first FILEINFO
    $InfoOff[1] &= 0x7fffffff;
    $InfoOff = unpack("V", substr($Info, $InfoOff[1] + 20, 4));    //offset to data
    $DataOff = unpack("V", substr($Info, $InfoOff[1], 4));
    $DataSize = unpack("V", substr($Info, $InfoOff[1] + 4, 4));
    $CodePage = unpack("V", substr($Info, $InfoOff[1] + 8, 4));
    $DataOff[1] -= $InfoVirt[1];
    $Version = unpack("v4", substr($Info, $DataOff[1] + 48, 8));
    $x = $Version[2];
    $Version[2] = $Version[1];
    $Version[1] = $x;
    $x = $Version[4];
    $Version[4] = $Version[3];
    $Version[3] = $x;
    return $Version;
}

Answer 2

I recently moved our hosting from Windows to Linux. This was quite easy to do with VBScript given the Microsoft objects, but on Linux and PHP I couldn't find anything. We wrote this function in PHP to scan the .exe file and extract the "Product Version" that a VB.Net application had in it. You can change the $key to be whatever string you can find that has the version info and a null terminator.

Note that this scans the files in 64k chunks looking for the $key string. If you have a large .exe, it may take a few seconds. My .exe is 52k so it is nearly instant. If you have a larger exe, you can change the scan.

<?php

function get_product_version($file_name)
{
   $key = "P\x00r\x00o\x00d\x00u\x00c\x00t\x00V\x00e\x00r\x00s\x00i\x00o\x00n\x00\x00\x00";
   $fptr = fopen($file_name, "rb");
   $data = "";
   while (!feof($fptr))
   {
      $data .= fread($fptr, 65536);
      if (strpos($data, $key)!==FALSE)
         break;
      $data = substr($data, strlen($data)-strlen($key));
   }
   fclose($fptr);
   if (strpos($data, $key)===FALSE)
      return "";
   $pos = strpos($data, $key)+strlen($key);
   $version = "";
   for ($i=$pos; $data[$i]!="\x00"; $i+=2)
      $version .= $data[$i];
   return $version;
}

echo get_product_version("/path_to_file/foo.exe");
?>