Module src.vanityonionr

"""
Onionr Vanity address generator

Library to generate vanity ed25519 addresses in various encodings
"""
"""
Onionr Vanity Address Generator
Copyright (C) 2019 Kevin Froman

This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program.  If not, see <https://www.gnu.org/licenses/>.
"""

import niceware
import nacl.signing, nacl.encoding

import multiprocessing
from multiprocessing import Process, Pipe, Queue
import re, time
import threading

wordlist = niceware.WORD_LIST

def find_vanity_mnemonic(start_words: str, queue):
    key_pair = [b"", b""]
    vanity_key = ""
    check = 0
    while not vanity_key.startswith(start_words):
        key = nacl.signing.SigningKey.generate()
        key_pair[1] = key.encode(nacl.encoding.RawEncoder)
        key_pair[0] = key.verify_key.encode(encoder=nacl.encoding.RawEncoder)
        vanity_key = '-'.join(niceware.bytes_to_passphrase(key_pair[0]))
        check += 1
    else:
        queue.put(key_pair)
        #print("DONE", check, key_pair)
    return key_pair

def _start(start_words, obj):
    done = False
    q = Queue()
    p = Process(target=find_vanity_mnemonic, args=[start_words, q])
    p.daemon = True
    p.start()
    rec = None
    while not done:
        try:
            if rec == None:
                rec = q.get(True, 1)
        except:
            rec = None
        if rec != None or obj.done:
            done = True
            obj.done = True
            obj.result = rec
    return rec

def handler(start_words: str):
    obj = lambda test: None
    obj.done = False
    for x in range(multiprocessing.cpu_count()):
        threading.Thread(target=_start, args=[start_words, obj]).start()
    while not obj.done:
        time.sleep(1)
    return obj.result

def find_multiprocess(start_words: str):
    start_words = start_words.strip()
    start_words = re.sub(' +', ' ', start_words)
    test_words = str(start_words)

    for word in test_words.split(' '): 
        for validword in wordlist:
            if word == validword:
                break
        else:
            raise ValueError('%s not in wordlist' % (word,))
    return handler(start_words)