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Merge pull request #668 from tomato42/ffdh-param-matching
FFDH parameter matching
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tlslite-ng>=0.8.0-alpha37 | ||
tlslite-ng>=0.8.0-alpha38 |
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# Author: Hubert Kario, (c) 2020 | ||
# Released under Gnu GPL v2.0, see LICENSE file for details | ||
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"""Minimal test for verifying server-selected DH parameters""" | ||
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from __future__ import print_function | ||
import traceback | ||
import sys | ||
import getopt | ||
from itertools import chain | ||
from random import sample | ||
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from tlslite.constants import CipherSuite, AlertLevel, AlertDescription, \ | ||
ExtensionType | ||
from tlslite.extensions import \ | ||
SignatureAlgorithmsExtension, SignatureAlgorithmsCertExtension | ||
from tlslite.mathtls import FFDHE_PARAMETERS | ||
import tlslite.dh as dh | ||
from tlsfuzzer.runner import Runner | ||
from tlsfuzzer.messages import Connect, ClientHelloGenerator, \ | ||
ClientKeyExchangeGenerator, ChangeCipherSpecGenerator, \ | ||
FinishedGenerator, ApplicationDataGenerator, AlertGenerator | ||
from tlsfuzzer.expect import ExpectServerHello, ExpectCertificate, \ | ||
ExpectServerHelloDone, ExpectChangeCipherSpec, ExpectFinished, \ | ||
ExpectAlert, ExpectClose, ExpectServerKeyExchange, \ | ||
ExpectApplicationData | ||
from tlsfuzzer.utils.lists import natural_sort_keys | ||
from tlsfuzzer.helpers import RSA_SIG_ALL | ||
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version = 1 | ||
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def help_msg(): | ||
print("Usage: <script-name> [-h hostname] [-p port] [[probe-name] ...]") | ||
print(" -h hostname name of the host to run the test against") | ||
print(" localhost by default") | ||
print(" -p port port number to use for connection, 4433 by default") | ||
print(" probe-name if present, will run only the probes with given") | ||
print(" names and not all of them, e.g \"sanity\"") | ||
print(" -e probe-name exclude the probe from the list of the ones run") | ||
print(" may be specified multiple times") | ||
print(" -x probe-name expect the probe to fail. When such probe passes despite being marked like this") | ||
print(" it will be reported in the test summary and the whole script will fail.") | ||
print(" May be specified multiple times.") | ||
print(" -X message expect the `message` substring in exception raised during") | ||
print(" execution of preceding expected failure probe") | ||
print(" usage: [-x probe-name] [-X exception], order is compulsory!") | ||
print(" -n num run 'num' or all(if 0) tests instead of default(all)") | ||
print(" (excluding \"sanity\" tests)") | ||
print(" --named-ffdh Name of the well-known FFDHE parameters that the server can use") | ||
print(" can be used multiple times to specify multiple valid groups") | ||
print(" \"RFC7919 ffdhe2048\" by default, unless --dhparam used") | ||
print(" --dhparam File with the expected DH parameters that the server should use") | ||
print(" can be used together with --named-ffdh to specify multiple") | ||
print(" acceptable parameters") | ||
print(" --help this message") | ||
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def main(): | ||
"""Test what DH parameters server selects for exchange""" | ||
host = "localhost" | ||
port = 4433 | ||
num_limit = None | ||
run_exclude = set() | ||
expected_failures = {} | ||
last_exp_tmp = None | ||
group_names = [] | ||
dh_file = None | ||
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argv = sys.argv[1:] | ||
opts, args = getopt.getopt(argv, "h:p:e:x:X:n:", ["help", "named-ffdh=", | ||
"dhparam="]) | ||
for opt, arg in opts: | ||
if opt == '-h': | ||
host = arg | ||
elif opt == '-p': | ||
port = int(arg) | ||
elif opt == '-e': | ||
run_exclude.add(arg) | ||
elif opt == '-x': | ||
expected_failures[arg] = None | ||
last_exp_tmp = str(arg) | ||
elif opt == '-X': | ||
if not last_exp_tmp: | ||
raise ValueError("-x has to be specified before -X") | ||
expected_failures[last_exp_tmp] = str(arg) | ||
elif opt == '-n': | ||
num_limit = int(arg) | ||
elif opt == '--help': | ||
help_msg() | ||
sys.exit(0) | ||
elif opt == '--named-ffdh': | ||
group_names.append(arg) | ||
elif opt == '--dhparam': | ||
dh_file = arg | ||
else: | ||
raise ValueError("Unknown option: {0}".format(opt)) | ||
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if args: | ||
run_only = set(args) | ||
else: | ||
run_only = None | ||
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if not group_names and not dh_file: | ||
group_names = ["RFC7919 ffdhe2048"] | ||
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try: | ||
valid_params = set(FFDHE_PARAMETERS[i] for i in group_names) | ||
except KeyError as e: | ||
raise ValueError( | ||
"Unrecognised group name: {0}, known names: {1}" | ||
.format(str(e), | ||
", ".join("'{0}'".format(i) for i in | ||
FFDHE_PARAMETERS.keys()))) | ||
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if dh_file: | ||
with open(dh_file, "r") as f: | ||
data = f.read() | ||
valid_params.add(dh.parse(data)) | ||
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conversations = {} | ||
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conversation = Connect(host, port) | ||
node = conversation | ||
ext = {ExtensionType.renegotiation_info: None} | ||
ciphers = [CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, | ||
CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA, | ||
CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, | ||
CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA256] | ||
ext[ExtensionType.signature_algorithms] = \ | ||
SignatureAlgorithmsExtension().create(RSA_SIG_ALL) | ||
ext[ExtensionType.signature_algorithms_cert] = \ | ||
SignatureAlgorithmsCertExtension().create(RSA_SIG_ALL) | ||
node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext)) | ||
node = node.add_child(ExpectServerHello(extensions={ExtensionType. | ||
renegotiation_info:None})) | ||
node = node.add_child(ExpectCertificate()) | ||
node = node.add_child(ExpectServerKeyExchange()) | ||
node = node.add_child(ExpectServerHelloDone()) | ||
node = node.add_child(ClientKeyExchangeGenerator()) | ||
node = node.add_child(ChangeCipherSpecGenerator()) | ||
node = node.add_child(FinishedGenerator()) | ||
node = node.add_child(ExpectChangeCipherSpec()) | ||
node = node.add_child(ExpectFinished()) | ||
node = node.add_child(ApplicationDataGenerator( | ||
bytearray(b"GET / HTTP/1.0\r\n\r\n"))) | ||
node = node.add_child(ExpectApplicationData()) | ||
node = node.add_child(AlertGenerator(AlertLevel.warning, | ||
AlertDescription.close_notify)) | ||
node = node.add_child(ExpectAlert(AlertLevel.warning, | ||
AlertDescription.close_notify)) | ||
node.next_sibling = ExpectClose() | ||
node.add_child(ExpectClose()) | ||
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conversations["sanity"] = conversation | ||
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conversation = Connect(host, port) | ||
node = conversation | ||
ext = {ExtensionType.renegotiation_info: None} | ||
ciphers = [CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA, | ||
CipherSuite.TLS_DHE_RSA_WITH_AES_256_CBC_SHA, | ||
CipherSuite.TLS_DHE_RSA_WITH_AES_128_GCM_SHA256, | ||
CipherSuite.TLS_DHE_RSA_WITH_AES_128_CBC_SHA256] | ||
ext[ExtensionType.signature_algorithms] = \ | ||
SignatureAlgorithmsExtension().create(RSA_SIG_ALL) | ||
ext[ExtensionType.signature_algorithms_cert] = \ | ||
SignatureAlgorithmsCertExtension().create(RSA_SIG_ALL) | ||
node = node.add_child(ClientHelloGenerator(ciphers, extensions=ext)) | ||
node = node.add_child(ExpectServerHello(extensions={ExtensionType. | ||
renegotiation_info:None})) | ||
node = node.add_child(ExpectCertificate()) | ||
node = node.add_child(ExpectServerKeyExchange(valid_params=valid_params)) | ||
node = node.add_child(ExpectServerHelloDone()) | ||
node = node.add_child(ClientKeyExchangeGenerator()) | ||
node = node.add_child(ChangeCipherSpecGenerator()) | ||
node = node.add_child(FinishedGenerator()) | ||
node = node.add_child(ExpectChangeCipherSpec()) | ||
node = node.add_child(ExpectFinished()) | ||
node = node.add_child(ApplicationDataGenerator( | ||
bytearray(b"GET / HTTP/1.0\r\n\r\n"))) | ||
node = node.add_child(ExpectApplicationData()) | ||
node = node.add_child(AlertGenerator(AlertLevel.warning, | ||
AlertDescription.close_notify)) | ||
node = node.add_child(ExpectAlert(AlertLevel.warning, | ||
AlertDescription.close_notify)) | ||
node.next_sibling = ExpectClose() | ||
node.add_child(ExpectClose()) | ||
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conversations["FFDH parameters check"] = conversation | ||
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good = 0 | ||
bad = 0 | ||
xfail = 0 | ||
xpass = 0 | ||
failed = [] | ||
xpassed = [] | ||
num_limit = num_limit or len(conversations) | ||
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# make sure that sanity test is run first and last | ||
# to verify that server was running and kept running throughout | ||
sanity_tests = [('sanity', conversations['sanity'])] | ||
if run_only: | ||
if num_limit > len(run_only): | ||
num_limit = len(run_only) | ||
regular_tests = [(k, v) for k, v in conversations.items() if | ||
k in run_only] | ||
else: | ||
regular_tests = [(k, v) for k, v in conversations.items() if | ||
(k != 'sanity') and k not in run_exclude] | ||
sampled_tests = sample(regular_tests, min(num_limit, len(regular_tests))) | ||
ordered_tests = chain(sanity_tests, sampled_tests, sanity_tests) | ||
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for c_name, c_test in ordered_tests: | ||
if run_only and c_name not in run_only or c_name in run_exclude: | ||
continue | ||
print("{0} ...".format(c_name)) | ||
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runner = Runner(c_test) | ||
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res = True | ||
exception = None | ||
try: | ||
runner.run() | ||
except Exception as exp: | ||
exception = exp | ||
print("Error while processing") | ||
print(traceback.format_exc()) | ||
res = False | ||
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if c_name in expected_failures: | ||
if res: | ||
xpass += 1 | ||
xpassed.append(c_name) | ||
print("XPASS-expected failure but test passed\n") | ||
else: | ||
if expected_failures[c_name] is not None and \ | ||
expected_failures[c_name] not in str(exception): | ||
bad += 1 | ||
failed.append(c_name) | ||
print("Expected error message: {0}\n" | ||
.format(expected_failures[c_name])) | ||
else: | ||
xfail += 1 | ||
print("OK-expected failure\n") | ||
else: | ||
if res: | ||
good += 1 | ||
print("OK\n") | ||
else: | ||
bad += 1 | ||
failed.append(c_name) | ||
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print("Test to check if server selects the expected DH parameters") | ||
print("See tlslite.mathtls.FFDHE_PARAMETERS for supported names\n") | ||
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print("Test end") | ||
print(20 * '=') | ||
print("version: {0}".format(version)) | ||
print(20 * '=') | ||
print("TOTAL: {0}".format(len(sampled_tests) + 2*len(sanity_tests))) | ||
print("SKIP: {0}".format(len(run_exclude.intersection(conversations.keys())))) | ||
print("PASS: {0}".format(good)) | ||
print("XFAIL: {0}".format(xfail)) | ||
print("FAIL: {0}".format(bad)) | ||
print("XPASS: {0}".format(xpass)) | ||
print(20 * '=') | ||
sort = sorted(xpassed, key=natural_sort_keys) | ||
if sort: | ||
print("XPASSED:\n\t{0}".format('\n\t'.join(repr(i) for i in sort))) | ||
sort = sorted(failed, key=natural_sort_keys) | ||
if sort: | ||
print("FAILED:\n\t{0}".format('\n\t'.join(repr(i) for i in sort))) | ||
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if bad > 0: | ||
sys.exit(1) | ||
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if __name__ == "__main__": | ||
main() |
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