def tctx() -> context.Context:
opts = options.Options()
Proxyserver().load(opts)
TermLog().load(opts)
Core().load(opts)
return context.Context(
context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329),
opts)
def test_tls_clienthello(self):
# only really testing for coverage here, there's no point in mirroring the individual conditions
ta = tlsconfig.TlsConfig()
with taddons.context(ta) as tctx:
ctx = context.Context(context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329), tctx.options)
ch = tls.ClientHelloData(ctx)
ta.tls_clienthello(ch)
assert not ch.establish_server_tls_first
def test_context():
with taddons.context() as tctx:
c = context.Context(tflow.tclient_conn(), tctx.options)
assert repr(c)
c.layers.append(1)
c2 = c.fork()
c.layers.append(2)
c2.layers.append(3)
assert c.layers == [1, 2]
assert c2.layers == [1, 3]
def test_fuzz_h1_request(data):
tctx = context.Context(
context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329),
opts)
layer = http.HttpLayer(tctx, HTTPMode.regular)
for _ in layer.handle_event(Start()):
pass
for chunk in data:
for _ in layer.handle_event(DataReceived(tctx.client, chunk)):
pass
def test_create_proxy_server_ssl_conn_verify_ok(self, tdata):
ta = tlsconfig.TlsConfig()
with taddons.context(ta) as tctx:
ctx = context.Context(context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329), tctx.options)
ctx.server.address = ("example.mitmproxy.org", 443)
tctx.configure(ta, ssl_verify_upstream_trusted_ca=tdata.path(
"mitmproxy/net/data/verificationcerts/trusted-root.crt"))
tls_start = tls.TlsStartData(ctx.server, context=ctx)
ta.tls_start(tls_start)
tssl_client = tls_start.ssl_conn
tssl_server = test_tls.SSLTest(server_side=True)
assert self.do_handshake(tssl_client, tssl_server)
def h2_layer(opts):
tctx = context.Context(
context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329),
opts)
tctx.client.alpn = b"h2"
layer = http.HttpLayer(tctx, HTTPMode.regular)
for _ in layer.handle_event(Start()):
pass
for _ in layer.handle_event(
DataReceived(tctx.client, b'PRI * HTTP/2.0\r\n\r\nSM\r\n\r\n')):
pass
return tctx, layer
def test_create_proxy_server_ssl_conn_verify_failed(self):
ta = tlsconfig.TlsConfig()
with taddons.context(ta) as tctx:
ctx = context.Context(context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329), tctx.options)
ctx.client.alpn_offers = [b"h2"]
ctx.client.cipher_list = ["TLS_AES_256_GCM_SHA384", "ECDHE-RSA-AES128-SHA"]
ctx.server.address = ("example.mitmproxy.org", 443)
tls_start = tls.TlsStartData(ctx.server, context=ctx)
ta.tls_start(tls_start)
tssl_client = tls_start.ssl_conn
tssl_server = test_tls.SSLTest(server_side=True)
with pytest.raises(SSL.Error, match="certificate verify failed"):
assert self.do_handshake(tssl_client, tssl_server)
def test_create_client_proxy_ssl_conn(self, tdata):
ta = tlsconfig.TlsConfig()
with taddons.context(ta) as tctx:
ta.configure(["confdir"])
tctx.configure(ta, certs=[tdata.path("mitmproxy/net/data/verificationcerts/trusted-leaf.pem")])
ctx = context.Context(context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329), tctx.options)
tctx.options.add_upstream_certs_to_client_chain = True
tls_start = tls.TlsStartData(ctx.client, context=ctx)
ta.tls_start(tls_start)
tssl_server = tls_start.ssl_conn
tssl_client = test_tls.SSLTest()
assert self.do_handshake(tssl_client, tssl_server)
assert tssl_client.obj.getpeercert()["subjectAltName"] == (("DNS", "example.mitmproxy.org"),)
def _h2_response(chunks):
tctx = context.Context(
context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329),
opts)
playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False)
server = Placeholder(context.Server)
assert (playbook >> DataReceived(
tctx.client,
b"GET http://example.com/ HTTP/1.1\r\nHost: example.com\r\n\r\n") <<
OpenConnection(server) >> reply(
None, side_effect=make_h2) << SendData(server, Placeholder()))
for chunk in chunks:
for _ in playbook.layer.handle_event(
events.DataReceived(server(), chunk)):
pass
def test_create_proxy_server_ssl_conn_insecure(self):
ta = tlsconfig.TlsConfig()
with taddons.context(ta) as tctx:
ctx = context.Context(context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329), tctx.options)
ctx.server.address = ("example.mitmproxy.org", 443)
tctx.configure(
ta,
ssl_verify_upstream_trusted_ca=None,
ssl_insecure=True,
http2=False,
ciphers_server="ALL"
)
tls_start = tls.TlsStartData(ctx.server, context=ctx)
ta.tls_start(tls_start)
tssl_client = tls_start.ssl_conn
tssl_server = test_tls.SSLTest(server_side=True)
assert self.do_handshake(tssl_client, tssl_server)
def test_alpn_selection(self):
ta = tlsconfig.TlsConfig()
with taddons.context(ta) as tctx:
ctx = context.Context(context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329), tctx.options)
ctx.server.address = ("example.mitmproxy.org", 443)
tls_start = tls.TlsStartData(ctx.server, context=ctx)
def assert_alpn(http2, client_offers, expected):
tctx.configure(ta, http2=http2)
ctx.client.alpn_offers = client_offers
ctx.server.alpn_offers = None
ta.tls_start(tls_start)
assert ctx.server.alpn_offers == expected
assert_alpn(True, tls.HTTP_ALPNS + (b"foo",), tls.HTTP_ALPNS + (b"foo",))
assert_alpn(False, tls.HTTP_ALPNS + (b"foo",), tls.HTTP1_ALPNS + (b"foo",))
assert_alpn(True, [], tls.HTTP_ALPNS)
assert_alpn(False, [], tls.HTTP1_ALPNS)
ctx.client.timestamp_tls_setup = time.time()
# make sure that we don't upgrade h1 to h2,
# see comment in tlsconfig.py
assert_alpn(True, [], [])
def test_get_cert(self, tdata):
"""Test that we generate a certificate matching the connection's context."""
ta = tlsconfig.TlsConfig()
with taddons.context(ta) as tctx:
ta.configure(["confdir"])
ctx = context.Context(context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329), tctx.options)
# Edge case first: We don't have _any_ idea about the server, so we just return "mitmproxy" as subject.
cert, pkey, chainfile = ta.get_cert(ctx)
assert cert.cn == b"mitmproxy"
# Here we have an existing server connection...
ctx.server.address = ("server-address.example", 443)
with open(tdata.path("mitmproxy/net/data/verificationcerts/trusted-leaf.crt"), "rb") as f:
ctx.server.certificate_list = [certs.Cert.from_pem(f.read())]
cert, pkey, chainfile = ta.get_cert(ctx)
assert cert.cn == b"example.mitmproxy.org"
assert cert.altnames == [b"example.mitmproxy.org", b"server-address.example"]
# And now we also incorporate SNI.
ctx.client.sni = b"sni.example"
cert, pkey, chainfile = ta.get_cert(ctx)
assert cert.altnames == [b"example.mitmproxy.org", b"sni.example"]
def tctx():
context.Context(context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329), tctx.options)
def _test_cancel(stream_req, stream_resp, draw):
"""
Test that we don't raise an exception if someone disconnects.
"""
tctx = context.Context(
context.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329),
opts)
playbook, cff = start_h2_client(tctx)
flow = Placeholder(HTTPFlow)
server = Placeholder(Server)
def maybe_stream(flow: HTTPFlow):
if stream_req:
flow.request.stream = True
if stream_resp and flow.response:
flow.response.stream = True
hook_req_headers = http.HttpRequestHeadersHook(flow)
hook_req = http.HttpRequestHook(flow)
hook_resp_headers = http.HttpResponseHeadersHook(flow)
hook_resp = http.HttpResponseHook(flow)
hook_error = http.HttpErrorHook(flow)
openconn = OpenConnection(server)
send_upstream = SendData(server, Placeholder(bytes))
data_req = DataReceived(
tctx.client,
cff.build_headers_frame(example_request_headers).serialize())
data_reqbody = DataReceived(
tctx.client,
cff.build_data_frame(b"foo", flags=["END_STREAM"]).serialize())
data_resp = DataReceived(
server,
cff.build_headers_frame(example_response_headers).serialize())
data_respbody = DataReceived(
server,
cff.build_data_frame(b"bar", flags=["END_STREAM"]).serialize())
client_disc = ConnectionClosed(tctx.client)
client_rst = DataReceived(tctx.client,
cff.build_rst_stream_frame(1).serialize())
server_disc = ConnectionClosed(server)
server_rst = DataReceived(server,
cff.build_rst_stream_frame(1).serialize())
evts: Dict[str, Tuple[Any, Any, Any]] = {}
# precondition, but-not-after-this
evts["data_req"] = data_req, None, client_disc
evts["data_reqbody"] = data_reqbody, data_req, client_disc
evts["reply_hook_req_headers"] = reply(
to=hook_req_headers, side_effect=maybe_stream), hook_req_headers, None
evts["reply_hook_req"] = reply(to=hook_req), hook_req, None
evts["reply_openconn"] = reply(None, to=openconn,
side_effect=make_h2), openconn, None
evts["data_resp"] = data_resp, send_upstream, server_disc
evts["data_respbody"] = data_respbody, data_resp, server_disc
evts["reply_hook_resp_headers"] = reply(
to=hook_resp_headers,
side_effect=maybe_stream), hook_resp_headers, None
evts["reply_hook_resp"] = reply(to=hook_resp), hook_resp, None
evts["reply_hook_error"] = reply(to=hook_error), hook_error, None
evts["err_client_disc"] = client_disc, None, None
evts["err_client_rst"] = client_rst, None, client_disc
evts["err_server_disc"] = server_disc, send_upstream, None
evts["err_server_rst"] = server_rst, send_upstream, server_disc
def eq_maybe(a, b):
# _eq helpfully raises a TypeError when placeholder types don't match
# that is useful in (test) development, but may happen legitimately when fuzzing here.
try:
return _eq(a, b)
except TypeError:
return False
while evts:
candidates = []
for name, (evt, precon, negprecon) in evts.items():
precondition_ok = (precon is None or any(
eq_maybe(x, precon) for x in playbook.actual))
neg_precondition_ok = (
negprecon is None
or not any(eq_maybe(x, negprecon) for x in playbook.actual))
if precondition_ok and neg_precondition_ok:
# crude hack to increase fuzzing efficiency: make it more likely that we progress.
for i in range(1 if name.startswith("err_") else 3):
candidates.append((name, evt))
if not candidates:
break
name, evt = draw(candidates)
del evts[name]
try:
assert playbook >> evt
except AssertionError:
if any(
isinstance(x, _TracebackInPlaybook)
for x in playbook.actual):
raise
else:
# add commands that the server issued.
playbook.expected.extend(
playbook.actual[len(playbook.expected):])