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# -*- coding: utf-8 -*-
# Copyright 2014 matrix.org
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
import ConfigParser as configparser
import argparse
import socket
import sys
import os
from OpenSSL import crypto
import nacl.signing
from syutil.base64util import encode_base64
import subprocess
def load_config(description, argv):
config_parser = argparse.ArgumentParser(add_help=False)
config_parser.add_argument("-c", "--config-path", metavar="CONFIG_FILE",
help="Specify config file")
config_args, remaining_args = config_parser.parse_known_args(argv)
if config_args.config_path:
config = configparser.SafeConfigParser()
config.read([config_args.config_path])
defaults = dict(config.items("KeyServer"))
else:
defaults = {}
parser = argparse.ArgumentParser(
parents=[config_parser],
description=description,
formatter_class=argparse.RawDescriptionHelpFormatter,
)
parser.set_defaults(**defaults)
parser.add_argument("--server-name", default=socket.getfqdn(),
help="The name of the server")
parser.add_argument("--signing-key-path",
help="The signing key to sign responses with")
parser.add_argument("--tls-certificate-path",
help="PEM encoded X509 certificate for TLS")
parser.add_argument("--tls-private-key-path",
help="PEM encoded private key for TLS")
parser.add_argument("--tls-dh-params-path",
help="PEM encoded dh parameters for ephemeral keys")
parser.add_argument("--bind-port", type=int,
help="TCP port to listen on")
parser.add_argument("--bind-host", default="",
help="Local interface to listen on")
args = parser.parse_args(remaining_args)
server_config = vars(args)
del server_config["config_path"]
return server_config
def generate_config(argv):
parser = argparse.ArgumentParser()
parser.add_argument("-c", "--config-path", help="Specify config file",
metavar="CONFIG_FILE", required=True)
parser.add_argument("--server-name", default=socket.getfqdn(),
help="The name of the server")
parser.add_argument("--signing-key-path",
help="The signing key to sign responses with")
parser.add_argument("--tls-certificate-path",
help="PEM encoded X509 certificate for TLS")
parser.add_argument("--tls-private-key-path",
help="PEM encoded private key for TLS")
parser.add_argument("--tls-dh-params-path",
help="PEM encoded dh parameters for ephemeral keys")
parser.add_argument("--bind-port", type=int, required=True,
help="TCP port to listen on")
parser.add_argument("--bind-host", default="",
help="Local interface to listen on")
args = parser.parse_args(argv)
dir_name = os.path.dirname(args.config_path)
base_key_name = os.path.join(dir_name, args.server_name)
if args.signing_key_path is None:
args.signing_key_path = base_key_name + ".signing.key"
if args.tls_certificate_path is None:
args.tls_certificate_path = base_key_name + ".tls.crt"
if args.tls_private_key_path is None:
args.tls_private_key_path = base_key_name + ".tls.key"
if args.tls_dh_params_path is None:
args.tls_dh_params_path = base_key_name + ".tls.dh"
if not os.path.exists(args.signing_key_path):
with open(args.signing_key_path, "w") as signing_key_file:
key = nacl.signing.SigningKey.generate()
signing_key_file.write(encode_base64(key.encode()))
if not os.path.exists(args.tls_private_key_path):
with open(args.tls_private_key_path, "w") as private_key_file:
tls_private_key = crypto.PKey()
tls_private_key.generate_key(crypto.TYPE_RSA, 2048)
private_key_pem = crypto.dump_privatekey(
crypto.FILETYPE_PEM, tls_private_key
)
private_key_file.write(private_key_pem)
else:
with open(args.tls_private_key_path) as private_key_file:
private_key_pem = private_key_file.read()
tls_private_key = crypto.load_privatekey(
crypto.FILETYPE_PEM, private_key_pem
)
if not os.path.exists(args.tls_certificate_path):
with open(args.tls_certificate_path, "w") as certifcate_file:
cert = crypto.X509()
subject = cert.get_subject()
subject.CN = args.server_name
cert.set_serial_number(1000)
cert.gmtime_adj_notBefore(0)
cert.gmtime_adj_notAfter(10 * 365 * 24 * 60 * 60)
cert.set_issuer(cert.get_subject())
cert.set_pubkey(tls_private_key)
cert.sign(tls_private_key, 'sha256')
cert_pem = crypto.dump_certificate(crypto.FILETYPE_PEM, cert)
certifcate_file.write(cert_pem)
if not os.path.exists(args.tls_dh_params_path):
subprocess.check_call([
"openssl", "dhparam",
"-outform", "PEM",
"-out", args.tls_dh_params_path,
"2048"
])
config = configparser.SafeConfigParser()
config.add_section("KeyServer")
for key, value in vars(args).items():
if key != "config_path":
config.set("KeyServer", key, str(value))
with open(args.config_path, "w") as config_file:
config.write(config_file)
if __name__ == "__main__":
generate_config(sys.argv[1:])
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