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#!/usr/bin/env python
from __future__ import print_function
"""An M2Crypto implementation of OpenSSL's s_server.
Copyright (c) 1999-2003 Ng Pheng Siong. All rights reserved."""
from socket import *
import asyncore
import cStringIO
import getopt
import string
import sys
from M2Crypto import SSL, BIO, DH, Err
# s_server -www
HOST = ""
PORT = 4433
class Config:
pass
def config(args):
options = [
"accept=",
"context=",
"verify=",
"Verify=",
"cert=",
"key=",
"dcert=",
"dkey=",
"nocert",
"crlf",
"debug",
"CApath=",
"CAfile=",
"quiet",
"no_tmp_rsa",
"state",
"sslv2",
"sslv3",
"tlsv1",
"no_sslv2",
"no_sslv3",
"no_tlsv1",
"bugs",
"cipher=",
]
optlist, optarg = getopt.getopt(args, "", options)
cfg = Config()
for opt in optlist:
setattr(cfg, opt[0][2:], opt[1])
for x in (("tlsv1", "no_tlsv1"), ("sslv3", "no_sslv3"), ("sslv2", "no_sslv2")):
if hasattr(cfg, x[0]) and hasattr(cfg, x[1]):
raise ValueError("mutually exclusive: %s and %s" % x)
if hasattr(cfg, "accept"):
cfg.accept = string.split(cfg.connect, ":")
else:
cfg.accept = (HOST, PORT)
cfg.protocol = []
# First protocol found will be used.
# Permutate the following tuple for preference.
for p in ("tlsv1", "sslv3", "sslv2"):
if hasattr(cfg, p):
cfg.protocol.append(p)
cfg.protocol.append("sslv23")
return cfg
RESP_HEAD = """\
HTTP/1.0 200 ok
Content-type: text/html
<HTML><BODY BGCOLOR=\"#ffffff\">
<pre>
Emulating s_server -www
Ciphers supported in s_server.py
"""
RESP_TAIL = """\
</pre>
</BODY></HTML>
"""
class channel(SSL.ssl_dispatcher):
def __init__(self, conn, debug):
SSL.ssl_dispatcher.__init__(self, conn)
self.socket.setblocking(0)
self.buffer = self.fixup_buffer()
self.debug = debug
def fixup_buffer(self):
even = 0
buffer = cStringIO.StringIO()
buffer.write(RESP_HEAD)
for c in self.get_ciphers():
# This formatting works for around 80 columns.
buffer.write("%-11s:%-28s" % (c.version(), c.name()))
if even:
buffer.write("\r\n")
even = 1 - even
buffer.write("\r\n%s" % RESP_TAIL)
return buffer.getvalue()
def handle_connect(self):
pass
def handle_close(self):
self.close()
def handle_error(self, exc_type, exc_value, exc_traceback):
if self.debug:
print("handle_error()")
# print(exc_type, exc_value, exc_traceback)
print(Err.get_error())
self.handle_close()
def writeable(self):
return len(self.buffer)
def handle_write(self):
n = self.send(self.buffer)
if n == -1:
pass
elif n == 0:
self.handle_close()
else:
self.buffer = self.buffer[n:]
if self.debug:
print("handle_write():", n)
def readable(self):
return 1
def handle_read(self):
blob = self.recv()
if blob is None:
pass
elif blob == "":
self.handle_close()
else:
pass
if self.debug:
print("handle_read():", blob)
class server(SSL.ssl_dispatcher):
channel_class = channel
def __init__(self, addr, port, config, ssl_context):
asyncore.dispatcher.__init__(self)
self.create_socket(ssl_context)
self.set_reuse_addr()
self.socket.setblocking(0)
self.bind((addr, port))
self.listen(5)
self.config = config
self.debug = config.debug
self.ssl_ctx = ssl_context
def handle_accept(self):
sock, addr = self.accept()
print(self.ssl_ctx.get_verify_mode())
if (self.ssl_ctx.get_verify_mode() is SSL.verify_none) or sock.verify_ok():
self.channel_class(sock, self.debug)
else:
print("client verification failed")
sock.close()
def writeable(self):
return 0
def s_server(config):
ctx = SSL.Context(config.protocol[0])
if hasattr(config, "debug"):
config.debug = 1
else:
config.debug = 0
if hasattr(config, "cert"):
cert = config.cert
else:
cert = "server.pem"
if hasattr(config, "key"):
cert = config.key
else:
cert = "server.pem"
ctx.load_cert(cert)
if hasattr(config, "CAfile"):
cafile = config.CAfile
else:
cafile = "ca.pem"
ctx.load_verify_location(cafile)
if hasattr(config, "verify"):
verify = SSL.verify_peer
depth = int(config.verify)
elif hasattr(config, "Verify"):
verify = SSL.verify_peer | SSL.verify_fail_if_no_peer_cert
depth = int(config.Verify)
else:
verify = SSL.verify_none
depth = 0
ctx.set_verify(verify, depth)
ctx.set_tmp_dh("dh1024.pem")
# ctx.set_info_callback()
server(cfg.accept[0], cfg.accept[1], cfg, ctx)
asyncore.loop()
if __name__ == "__main__":
cfg = config(sys.argv[1:])
s_server(cfg)
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