main.py

import sys
from util import isRangeOK
from myThread import myThread

def listToString(mList):
    forbiddenSigns = ['|', '<', '>', '?', '"', '*', '/', "\\", ':']
    outStr = ""
    for x in mList:
        if x not in forbiddenSigns:
            outStr += x
    return outStr

def entryPoint():
    args = sys.argv

    # Check required parameters is passed
    if len(args) != 3:
        print('############################################################')
        print("Usage:\n\t- python main.py <string> <range>")
        print('\t- example: python main.py abcdefgh 8-12')
        print('############################################################')
        exit(1)

    # Parsing passed parameters into local variables     
    characters = args[1]
    passwordLength = args[2]

    # Check the regex
    if not isRangeOK(passwordLength):
        print('Invalid <length> format!\n<length> must be in this format: xx-yy')
        exit(1)

    # Divide the range into two variables
    startRange = int(passwordLength.split("-")[0])
    endRange = int(passwordLength.split("-")[1])

    # The constant characters for all password lists
    constChars = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', '@', '+', '-', '?', '.', '_']

    # Split the passed string character by character 
    chars = []
    for ch in characters:
        # Check for lower case characters
        if ch.isupper():
            print("Error -> Please enter all input characters in lower case!")
            exit(1)
        
        # Check for pre-defined program characters
        if ch in constChars:
            continue

        # Check for duplicate characters
        j = 0
        for c in characters:
            if c == ch:
                j += 1
        if j > 1:
            continue
    
        chars.append(ch)

        if ch.isalpha() == True:
            chars.append(ch.upper())

    # Concat two lists into a single list
    chars = chars + constChars

    # Starting the threads
    for i in range(startRange, (endRange + 1)):
        fileName = 'input=' + listToString(chars) + "____len=" + str(i) + ".txt"
        mFile = open(fileName, 'w')
        mFile.write('')
        mFile = open(fileName, 'a')

        th = myThread(i, chars, mFile)
        th.start()

if __name__ == "__main__":
    entryPoint()