86 lines
3.1 KiB
Python
86 lines
3.1 KiB
Python
|
import argparse
|
||
|
|
import tempfile
|
||
|
|
import binascii
|
||
|
|
import hashlib
|
||
|
|
import os
|
||
|
|
import re
|
||
|
|
import sys
|
||
|
|
|
||
|
|
AUTH_ADD_REGEX=re.compile(r'^\s*auth_add\s+(?P<username>"[^"]*"|[^"\s]+)\s+(?P<level>"[^"]*"|[^"\s]+)\s+(?P<password>"[^"]*"|[^"\s]+)\s*$')
|
||
|
|
AUTH_ADD_PRESENT_REGEX=re.compile(r'(^|\W)auth_add($|\W)')
|
||
|
|
|
||
|
|
def hash_password(password):
|
||
|
|
salt = os.urandom(8)
|
||
|
|
h = hashlib.md5()
|
||
|
|
h.update(password.encode())
|
||
|
|
h.update(salt)
|
||
|
|
return h.hexdigest(), binascii.hexlify(salt).decode('ascii')
|
||
|
|
|
||
|
|
def auth_add_p_line(username, level, pwhash, salt):
|
||
|
|
if level not in ('admin', 'mod', 'moderator', 'helper'):
|
||
|
|
print(f"Warning: level ({level}) not one of admin, mod or helper.", file=sys.stderr)
|
||
|
|
if repr(level) != f"'{level}'":
|
||
|
|
print(f"Warning: level ({level}) contains weird symbols, config line is possibly malformed.", file=sys.stderr)
|
||
|
|
if repr(username) != f"'{username}'":
|
||
|
|
print(f"Warning: username ({username}) contains weird symbols, config line is possibly malformed.", file=sys.stderr)
|
||
|
|
username = username.replace('"', '\\"')
|
||
|
|
if ' ' in username or ';' in username:
|
||
|
|
username = f'"{username}"'
|
||
|
|
return f"auth_add_p {username} {level} {pwhash} {salt}"
|
||
|
|
|
||
|
|
def auth_add_p_line_from_pw(username, level, password):
|
||
|
|
if len(password) < 8:
|
||
|
|
print("Warning: password too short for a long-term password.", file=sys.stderr)
|
||
|
|
pwhash, salt = hash_password(password)
|
||
|
|
return auth_add_p_line(username, level, pwhash, salt)
|
||
|
|
|
||
|
|
def parse_line(line):
|
||
|
|
m = AUTH_ADD_REGEX.match(line)
|
||
|
|
if not m:
|
||
|
|
if AUTH_ADD_PRESENT_REGEX.search(line):
|
||
|
|
print("Warning: Funny-looking line with 'auth_add', not touching it:")
|
||
|
|
print(line, end="")
|
||
|
|
return None
|
||
|
|
password = m.group('password')
|
||
|
|
if password.startswith('"'):
|
||
|
|
password = password[1:-1] # Strip quotes.
|
||
|
|
return m.group('username'), m.group('level'), password
|
||
|
|
|
||
|
|
def main():
|
||
|
|
p = argparse.ArgumentParser(description="Hash passwords in a way suitable for DDNet configs.")
|
||
|
|
p.add_argument('--new', '-n', nargs=3, metavar=("USERNAME", "LEVEL", "PASSWORD"), action='append', default=[], help="username, level and password of the new user")
|
||
|
|
p.add_argument('config', nargs='?', metavar="CONFIG", help="config file to update.")
|
||
|
|
args = p.parse_args()
|
||
|
|
if not args.new and args.config is None:
|
||
|
|
p.error("expected at least one of --new and CONFIG")
|
||
|
|
|
||
|
|
use_stdio = args.config is None or args.config == '-'
|
||
|
|
if use_stdio:
|
||
|
|
if args.config is None:
|
||
|
|
input_file = open(os.devnull, encoding="utf-8")
|
||
|
|
else:
|
||
|
|
input_file = sys.stdin
|
||
|
|
output_file = sys.stdout
|
||
|
|
else:
|
||
|
|
input_file = open(args.config, encoding="utf-8") # pylint: disable=consider-using-with
|
||
|
|
output_file = tempfile.NamedTemporaryFile('w', dir=os.getcwd(), prefix=f"{args.config}.", delete=False) # pylint: disable=consider-using-with
|
||
|
|
|
||
|
|
for line in input_file:
|
||
|
|
parsed = parse_line(line)
|
||
|
|
if parsed is None:
|
||
|
|
print(line, end="", file=output_file)
|
||
|
|
else:
|
||
|
|
print(auth_add_p_line_from_pw(*parsed), file=output_file)
|
||
|
|
|
||
|
|
for auth_tuple in args.new:
|
||
|
|
print(auth_add_p_line_from_pw(*auth_tuple), file=output_file)
|
||
|
|
|
||
|
|
if not use_stdio:
|
||
|
|
input_file.close()
|
||
|
|
output_filename = output_file.name
|
||
|
|
output_file.close()
|
||
|
|
os.rename(output_filename, args.config)
|
||
|
|
|
||
|
|
if __name__ == '__main__':
|
||
|
|
main()
|