synapse-product/synapse/_scripts/hash_password.py
David Robertson f3f0ab10fe
Move scripts directory inside synapse, exposing as setuptools entry_points (#12118)
* Two scripts are basically entry_points already
* Move and rename scripts/* to synapse/_scripts/*.py
* Delete sync_room_to_group.pl
* Expose entry points in setup.py
* Update linter script and config
* Fixup scripts & docs mentioning scripts that moved

Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>
2022-03-02 13:00:16 +00:00

84 lines
2.0 KiB
Python
Executable File

#!/usr/bin/env python
import argparse
import getpass
import sys
import unicodedata
import bcrypt
import yaml
def prompt_for_pass():
password = getpass.getpass("Password: ")
if not password:
raise Exception("Password cannot be blank.")
confirm_password = getpass.getpass("Confirm password: ")
if password != confirm_password:
raise Exception("Passwords do not match.")
return password
def main():
bcrypt_rounds = 12
password_pepper = ""
parser = argparse.ArgumentParser(
description=(
"Calculate the hash of a new password, so that passwords can be reset"
)
)
parser.add_argument(
"-p",
"--password",
default=None,
help="New password for user. Will prompt if omitted.",
)
parser.add_argument(
"-c",
"--config",
type=argparse.FileType("r"),
help=(
"Path to server config file. "
"Used to read in bcrypt_rounds and password_pepper."
),
)
args = parser.parse_args()
if "config" in args and args.config:
config = yaml.safe_load(args.config)
bcrypt_rounds = config.get("bcrypt_rounds", bcrypt_rounds)
password_config = config.get("password_config", None) or {}
password_pepper = password_config.get("pepper", password_pepper)
password = args.password
if not password:
password = prompt_for_pass()
# On Python 2, make sure we decode it to Unicode before we normalise it
if isinstance(password, bytes):
try:
password = password.decode(sys.stdin.encoding)
except UnicodeDecodeError:
print(
"ERROR! Your password is not decodable using your terminal encoding (%s)."
% (sys.stdin.encoding,)
)
pw = unicodedata.normalize("NFKC", password)
hashed = bcrypt.hashpw(
pw.encode("utf8") + password_pepper.encode("utf8"),
bcrypt.gensalt(bcrypt_rounds),
).decode("ascii")
print(hashed)
if __name__ == "__main__":
main()