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#!/usr/bin/env python3
# This file is part of the trojan project.
# Trojan is an unidentifiable mechanism that helps you bypass GFW.
# Copyright (C) 2017-2020 The Trojan Authors.
#
# 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 <http://www.gnu.org/licenses/>.
import socket
import ssl
import sys
def input_with_default(prompt, default):
print('{} [{}]: '.format(prompt, default), file=sys.stderr, end='')
line = input()
return line if line else default
def main(argc, argv):
if argc == 1:
hostname = input_with_default('Enter hostname', 'example.com')
port = int(input_with_default('Enter port number', '443'))
elif argc == 2:
hostname = argv[1]
port = 443
elif argc == 3:
hostname = argv[1]
port = int(argv[2])
else:
print('usage: {} [hostname] [port]'.format(argv[0]), file=sys.stderr)
exit(1)
ctx = ssl.create_default_context()
ctx.check_hostname = False
ctx.verify_mode = ssl.CERT_NONE
with socket.create_connection((hostname, port)) as sock:
with ctx.wrap_socket(sock, server_hostname=hostname) as ssock:
print(ssl.DER_cert_to_PEM_cert(ssock.getpeercert(True)), end='')
if __name__ == '__main__':
main(len(sys.argv), sys.argv)
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