zulip/scripts/setup/generate_secrets.py

130 lines
4.1 KiB
Python
Executable File

#!/usr/bin/env python3
# This tools generates /etc/zulip/zulip-secrets.conf
import sys
import os
if False:
# See https://zulip.readthedocs.io/en/latest/testing/mypy.html#mypy-in-production-scripts
from typing import Dict, List
BASE_DIR = os.path.dirname(os.path.dirname(os.path.dirname(os.path.abspath(__file__))))
sys.path.append(BASE_DIR)
import scripts.lib.setup_path_on_import
os.environ['DJANGO_SETTINGS_MODULE'] = 'zproject.settings'
from django.utils.crypto import get_random_string
import argparse
import uuid
import configparser
from zerver.lib.utils import generate_random_token
os.chdir(os.path.join(os.path.dirname(__file__), '..', '..'))
CAMO_CONFIG_FILENAME = '/etc/default/camo'
# Standard, 64-bit tokens
AUTOGENERATED_SETTINGS = [
'avatar_salt',
'initial_password_salt',
'local_database_password',
'rabbitmq_password',
'shared_secret',
'thumbor_key',
]
# TODO: We can eliminate this function if we refactor the install
# script to run generate_secrets before zulip-puppet-apply.
def generate_camo_config_file(camo_key):
# type: (str) -> None
camo_config = """ENABLED=yes
PORT=9292
CAMO_KEY=%s
""" % (camo_key,)
with open(CAMO_CONFIG_FILENAME, 'w') as camo_file:
camo_file.write(camo_config)
print("Generated Camo config file %s" % (CAMO_CONFIG_FILENAME,))
def generate_django_secretkey():
# type: () -> str
"""Secret key generation taken from Django's startproject.py"""
chars = 'abcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*(-_=+)'
return get_random_string(50, chars)
def get_old_conf(output_filename):
# type: (str) -> Dict[str, str]
if not os.path.exists(output_filename) or os.path.getsize(output_filename) == 0:
return {}
secrets_file = configparser.RawConfigParser()
secrets_file.read(output_filename)
return dict(secrets_file.items("secrets"))
def generate_secrets(development=False):
# type: (bool) -> None
if development:
OUTPUT_SETTINGS_FILENAME = "zproject/dev-secrets.conf"
else:
OUTPUT_SETTINGS_FILENAME = "/etc/zulip/zulip-secrets.conf"
current_conf = get_old_conf(OUTPUT_SETTINGS_FILENAME)
lines = [] # type: List[str]
if len(current_conf) == 0:
lines = ['[secrets]\n']
def need_secret(name):
# type: (str) -> bool
return name not in current_conf
def add_secret(name, value):
# type: (str, str) -> None
lines.append("%s = %s\n" % (name, value))
current_conf[name] = value
for name in AUTOGENERATED_SETTINGS:
if need_secret(name):
add_secret(name, generate_random_token(64))
if need_secret('secret_key'):
add_secret('secret_key', generate_django_secretkey())
if need_secret('camo_key'):
add_secret('camo_key', get_random_string(64))
# zulip_org_key is generated using os.urandom().
# zulip_org_id does not require a secure CPRNG,
# it only needs to be unique.
if need_secret('zulip_org_key'):
add_secret('zulip_org_key', get_random_string(64))
if need_secret('zulip_org_id'):
add_secret('zulip_org_id', str(uuid.uuid4()))
if not development:
# Write the Camo config file directly
generate_camo_config_file(current_conf['camo_key'])
if len(lines) == 0:
print("generate_secrets: No new secrets to generate.")
return
out = open(OUTPUT_SETTINGS_FILENAME, 'a')
# Write a newline at the start, in case there was no newline at
# the end of the file due to human editing.
out.write("\n" + "".join(lines))
out.close()
print("Generated new secrets in %s." % (OUTPUT_SETTINGS_FILENAME,))
if __name__ == '__main__':
parser = argparse.ArgumentParser()
group = parser.add_mutually_exclusive_group(required=True)
group.add_argument('--development', action='store_true', dest='development',
help='For setting up the developer env for zulip')
group.add_argument('--production', action='store_false', dest='development',
help='For setting up the production env for zulip')
results = parser.parse_args()
generate_secrets(results.development)