/** Ensures that rendering engines on the computer are up-to-date */

int software_updatecheck(char *datadir){

  char *pathtoserverVersion;

  _distren_asprintf(&pathtoserverVersion, "%s/serverEngineVersion.info",datadir);

  char *engineDownloadPath;

  _distren_asprintf(&engineDownloadPath, "%s/engines/blender.tgz",datadir);

  char *pathtolocalVersion;

  _distren_asprintf(&pathtolocalVersion, "%s/envines/blender/version.info",datadir);

  curlget("http://protofusion.org/distren/srv/version.info",  pathtoserverVersion);

  struct stat buffer;

  char serverVersion[5]; // Version numbers are nice and short

  char localVersion[5]; // Version numbers are nice and short

  // Read server version

  {

    FILE * serverVersionFile;

    serverVersionFile = fopen(pathtoserverVersion, "r");

    fscanf(serverVersionFile, "%s",serverVersion);

    fclose(serverVersionFile);

  }

  // Read local version

  {

    FILE * localVersionFile;

    localVersionFile = fopen(pathtolocalVersion, "r");

    fscanf(localVersionFile, "%s",localVersion);

    fclose(localVersionFile);

  }

  // If a rendering engine was never downloaded

  if( stat(SYSCONFDIR "/engines/blender", &buffer) == -1){

    fprintf(stderr,"You don't have the blender engine. Preparing to download...");

    curlget("http://protofusion.org/distren/srv/blender-lin32-dist.tgz", engineDownloadPath); // Add calls for operating system info

    // untar(SYSCONFDIR "/engines/blender.tgz");

  }

  // If a rendering engine is out-of-date

  else if( serverVersion != localVersion){

    fprintf(stderr,"You don't have the latest blender engine. Preparing to download...");

    curlget("http://protofusion.org/distren/srv/blender-lin32-dist.tgz", engineDownloadPath); // Add calls for operating system info

    // untar(SYSCONFDIR "/engines/blender.tgz");

  }

  return 0;

}