Tool For Checking Password Lists

Code
#include <iostream>

#include <fstream>

#include <string>



int help(char *argv[]) {

    std::cout << "Usage: " << argv[0] << " <PasswordFile> [Options]" << std::endl;

    std::cout << "  Options:" << std::endl;

    std::cout << "    -wpa  Verify password list using WPA Rules (WPA uses same rules as WPA2)" << std::endl;

    //std::cout << "    -clean    Automatically delete invalid passwords from file" << std::endl;

    std::cout << "    -goodlist Print all valid passwords" << std::endl;

    std::cout << "    -badlist  Print all invalid passwords" << std::endl;

    std::cout << "  Example:" << std::endl;

    std::cout << "    " << argv[0] << " passwordlist.txt -wpa -badlist" << std::endl;



    return(1);

}



int does_exist(char *filetouse) {

    //first check to see if the cfg file exists

    FILE * pFile;

    if(pFile = fopen (filetouse,"r")) {

  //the file exists

  return(1);

    } else {

  //the file doesnt exist

  return(0);

    }

}



int verify(int argc, char *argv[]) {

    //variables for later usage

    //booleans for user options

    bool wpa = false;

    //bool clean = false;

    bool goodlist = false;

    bool badlist = false;

    //strings for file reading

    std::string password;

    std::ifstream infile;

    //strings for password statistics

    int numberoflines = 0;

    int numberoftolong = 0;

    int numberoftoshort = 0;

    int numberofbadchar = 0;

    int numberofgood = 0;

    int numberofempty = 0;



    const char *filetouse = argv[1];



    //check all the options

    for (int i = 0; i < argc; i++) {

  //options are -wpa -clean -goodlist -badlist

  std::string options[4] = {"-wpa","-clean","-goodlist","-badlist"};

  if(argv[i] == options[0]) {

    wpa = true;

  }

  /*if(argv[i] == options[1]) {

    clean = true;

  }*/

  if(argv[i] == options[2]) {

    goodlist = true;

  }

  if(argv[i] == options[3]) {

    badlist = true;

  }

    }



    //read the file line by line and check to see if the passwords are right

    infile.open(filetouse); //open the user file

    while(getline(infile, password)) { //while not the end of the file

  //getline(infile,password); //read the current line to std::string password



  //count the lines in the password field

  numberoflines += 1;



  //check password

  if(wpa == true) { //if checking WPA Rules

    if(password == "") { //empty line

    //skip empty lines

    numberofempty += 1;

    } else if(password.size() > 63) {

    //password is to big to be used

    if(badlist == true) {

    std::cout << password << std::endl;

    }

    numberoftolong += 1;

    } else if(password.size() < 8) {

    //password is to small to be used

    if(badlist == true) {

    std::cout << password << std::endl;

    }

    numberoftoshort += 1;

    } else if (password.find_first_not_of("!\"#$%&'()*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[\\]^_`abcdefghijklmnopqrstuvwxyz{|}~ ") != std::string::npos) {

    //password contains a bad character

    if(badlist == true) {

    std::cout << password << std::endl;

    }

    numberofbadchar += 1;

    } else {

    if(goodlist == true) {

    std::cout << password << std::endl;

    }

    numberofgood += 1;

    }

  }

    }

    infile.close();



    std::cout << "Checked " << numberoflines << " passwords." << std::endl;

    std::cout << "  " << numberofempty << " lines contained no text" << std::endl;

    std::cout << "  " << numberoftoshort << " lines were to short" << std::endl;

    std::cout << "  " << numberoftolong << " lines were to long" << std::endl;

    std::cout << "  " << numberofbadchar << " lines contained illegal characters" << std::endl;

    std::cout << "  " << numberofgood << " lines contained good passwords" << std::endl;



    return(0);

}



int main(int argc, char *argv[]) {

    if(argc <= 1){ //not enough options so help is shown

  if(help(argv)) {

    std::cout << "Fatal error. Quitting program." << std::endl;

    return(1);

  } //else program is working fine

    } else { //plenty of options, better check to see if they are the right ones

  if(argv[1] == std::string("help")) {//display help

    if(!help(argv)) {

    std::cout << "Fatal error. Quitting program." << std::endl;

    return(1);

    } //else program is working fine

  } else {

    if(does_exist(argv[1])){

    verify(argc, argv);

    } else {

    std::cout << "Invalid file" << std::endl;

    }

  }

    }

}