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# -*- coding: latin-1 -*-
#
# Copyright (C) AB Strakt
# Copyright (C) Jean-Paul Calderone
# See LICENSE for details.
"""
Simple SSL client, using blocking I/O
"""
import os
import socket
import sys
from OpenSSL import SSL, crypto
def verify_cb(conn, cert, errnum, depth, ok):
certsubject = crypto.X509Name(cert.get_subject())
commonname = certsubject.commonName
print('Got certificate: ' + commonname)
return ok
if len(sys.argv) < 3:
print('Usage: python client.py HOST PORT')
sys.exit(1)
dir = os.path.dirname(sys.argv[0])
if dir == '':
dir = os.curdir
# Initialize context
ctx = SSL.Context(SSL.SSLv23_METHOD)
ctx.set_options(SSL.OP_NO_SSLv2)
ctx.set_options(SSL.OP_NO_SSLv3)
ctx.set_verify(SSL.VERIFY_PEER, verify_cb) # Demand a certificate
ctx.use_privatekey_file(os.path.join(dir, 'client.pkey'))
ctx.use_certificate_file(os.path.join(dir, 'client.cert'))
ctx.load_verify_locations(os.path.join(dir, 'CA.cert'))
# Set up client
sock = SSL.Connection(ctx, socket.socket(socket.AF_INET, socket.SOCK_STREAM))
sock.connect((sys.argv[1], int(sys.argv[2])))
while 1:
line = sys.stdin.readline()
if line == '':
break
try:
sock.send(line)
sys.stdout.write(sock.recv(1024).decode('utf-8'))
sys.stdout.flush()
except SSL.Error:
print('Connection died unexpectedly')
break
sock.shutdown()
sock.close()
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