def test_upgrade_streamed(tctx):
"""If the HTTP response is streamed, we may get early data from the client."""
tctx.server.address = ("example.com", 80)
tctx.server.state = ConnectionState.OPEN
flow = Placeholder(HTTPFlow)
def enable_streaming(flow: HTTPFlow):
flow.response.stream = True
assert (
Playbook(http.HttpLayer(tctx, HTTPMode.transparent))
>> DataReceived(tctx.client,
b"GET / HTTP/1.1\r\n"
b"Connection: upgrade\r\n"
b"Upgrade: websocket\r\n"
b"Sec-WebSocket-Version: 13\r\n"
b"\r\n")
<< http.HttpRequestHeadersHook(flow)
>> reply()
<< http.HttpRequestHook(flow)
>> reply()
<< SendData(tctx.server, b"GET / HTTP/1.1\r\n"
b"Connection: upgrade\r\n"
b"Upgrade: websocket\r\n"
b"Sec-WebSocket-Version: 13\r\n"
b"\r\n")
>> DataReceived(tctx.server, b"HTTP/1.1 101 Switching Protocols\r\n"
b"Upgrade: websocket\r\n"
b"Connection: Upgrade\r\n"
b"\r\n")
<< http.HttpResponseHeadersHook(flow)
>> reply(side_effect=enable_streaming)
<< SendData(tctx.client, b"HTTP/1.1 101 Switching Protocols\r\n"
b"Upgrade: websocket\r\n"
b"Connection: Upgrade\r\n"
b"\r\n")
<< http.HttpResponseHook(flow)
>> DataReceived(tctx.client, masked_bytes(b"\x81\x0bhello world")) # early !!
>> reply(to=-2)
<< websocket.WebsocketStartHook(flow)
>> reply()
<< websocket.WebsocketMessageHook(flow)
>> reply()
<< SendData(tctx.server, masked(b"\x81\x0bhello world"))
>> DataReceived(tctx.server, b"\x82\nhello back")
<< websocket.WebsocketMessageHook(flow)
>> reply()
<< SendData(tctx.client, b"\x82\nhello back")
>> DataReceived(tctx.client, masked_bytes(b"\x81\x0bhello again"))
<< websocket.WebsocketMessageHook(flow)
>> reply()
<< SendData(tctx.server, masked(b"\x81\x0bhello again"))
)
def start_h2_client(tctx: Context) -> Tuple[Playbook, FrameFactory]:
tctx.client.alpn = b"h2"
frame_factory = FrameFactory()
playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular))
assert (
playbook
<< SendData(tctx.client, Placeholder()) # initial settings frame
>> DataReceived(tctx.client, frame_factory.preamble())
>> DataReceived(tctx.client, frame_factory.build_settings_frame({}, ack=True).serialize())
)
return playbook, frame_factory
def test_http_proxy_tcp(tctx, mode, close_first):
"""Test TCP over HTTP CONNECT."""
server = Placeholder(Server)
if mode == "upstream":
tctx.options.mode = "upstream:http://proxy:8080"
toplayer = http.HttpLayer(tctx, HTTPMode.upstream)
else:
tctx.options.mode = "regular"
toplayer = http.HttpLayer(tctx, HTTPMode.regular)
playbook = Playbook(toplayer, hooks=False)
assert (playbook >> DataReceived(
tctx.client, b"CONNECT example:443 HTTP/1.1\r\n\r\n") << SendData(
tctx.client, b"HTTP/1.1 200 Connection established\r\n\r\n") >>
DataReceived(tctx.client, b"this is not http") <<
layer.NextLayerHook(Placeholder()) >>
reply_next_layer(lambda ctx: TCPLayer(ctx, ignore=True)) <<
OpenConnection(server))
playbook >> reply(None)
if mode == "upstream":
playbook << SendData(server, b"CONNECT example:443 HTTP/1.1\r\n\r\n")
playbook >> DataReceived(
server, b"HTTP/1.1 200 Connection established\r\n\r\n")
assert (playbook << SendData(server, b"this is not http") >> DataReceived(
server, b"true that") << SendData(tctx.client, b"true that"))
if mode == "regular":
assert server().address == ("example", 443)
else:
assert server().address == ("proxy", 8080)
if close_first == "client":
a, b = tctx.client, server
else:
a, b = server, tctx.client
assert (playbook >> ConnectionClosed(a) << CloseConnection(b) >>
ConnectionClosed(b) << CloseConnection(a))
def test_redirect(strategy, https_server, https_client, tctx, monkeypatch):
"""Test redirects between http:// and https:// in regular proxy mode."""
server = Placeholder(Server)
flow = Placeholder(HTTPFlow)
tctx.options.connection_strategy = strategy
p = Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False)
if https_server:
monkeypatch.setattr(tls, "ServerTLSLayer", tls.MockTLSLayer)
def redirect(flow: HTTPFlow):
if https_server:
flow.request.url = "https://redirected.site/"
else:
flow.request.url = "http://redirected.site/"
if https_client:
p >> DataReceived(tctx.client, b"CONNECT example.com:80 HTTP/1.1\r\n\r\n")
if strategy == "eager":
p << OpenConnection(Placeholder())
p >> reply(None)
p << SendData(tctx.client, b'HTTP/1.1 200 Connection established\r\n\r\n')
p >> DataReceived(tctx.client, b"GET / HTTP/1.1\r\nHost: example.com\r\n\r\n")
p << layer.NextLayerHook(Placeholder())
p >> reply_next_layer(lambda ctx: http.HttpLayer(ctx, HTTPMode.transparent))
else:
p >> DataReceived(tctx.client, b"GET http://example.com/ HTTP/1.1\r\nHost: example.com\r\n\r\n")
p << http.HttpRequestHook(flow)
p >> reply(side_effect=redirect)
p << OpenConnection(server)
p >> reply(None)
p << SendData(server, b"GET / HTTP/1.1\r\nHost: redirected.site\r\n\r\n")
p >> DataReceived(server, b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World!")
p << SendData(tctx.client, b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World!")
assert p
if https_server:
assert server().address == ("redirected.site", 443)
else:
assert server().address == ("redirected.site", 80)
def test_upgrade(tctx):
"""Test a HTTP -> WebSocket upgrade"""
tctx.server.address = ("example.com", 80)
tctx.server.state = ConnectionState.OPEN
flow = Placeholder(HTTPFlow)
assert (
Playbook(http.HttpLayer(tctx, HTTPMode.transparent))
>> DataReceived(tctx.client,
b"GET / HTTP/1.1\r\n"
b"Connection: upgrade\r\n"
b"Upgrade: websocket\r\n"
b"Sec-WebSocket-Version: 13\r\n"
b"\r\n")
<< http.HttpRequestHeadersHook(flow)
>> reply()
<< http.HttpRequestHook(flow)
>> reply()
<< SendData(tctx.server, b"GET / HTTP/1.1\r\n"
b"Connection: upgrade\r\n"
b"Upgrade: websocket\r\n"
b"Sec-WebSocket-Version: 13\r\n"
b"\r\n")
>> DataReceived(tctx.server, b"HTTP/1.1 101 Switching Protocols\r\n"
b"Upgrade: websocket\r\n"
b"Connection: Upgrade\r\n"
b"\r\n")
<< http.HttpResponseHeadersHook(flow)
>> reply()
<< http.HttpResponseHook(flow)
>> reply()
<< SendData(tctx.client, b"HTTP/1.1 101 Switching Protocols\r\n"
b"Upgrade: websocket\r\n"
b"Connection: Upgrade\r\n"
b"\r\n")
<< websocket.WebsocketStartHook(flow)
>> reply()
>> DataReceived(tctx.client, masked_bytes(b"\x81\x0bhello world"))
<< websocket.WebsocketMessageHook(flow)
>> reply()
<< SendData(tctx.server, masked(b"\x81\x0bhello world"))
>> DataReceived(tctx.server, b"\x82\nhello back")
<< websocket.WebsocketMessageHook(flow)
>> reply()
<< SendData(tctx.client, b"\x82\nhello back")
)
assert len(flow().websocket.messages) == 2
assert flow().websocket.messages[0].content == b"hello world"
assert flow().websocket.messages[0].from_client
assert flow().websocket.messages[0].type == Opcode.TEXT
assert flow().websocket.messages[1].content == b"hello back"
assert flow().websocket.messages[1].from_client is False
assert flow().websocket.messages[1].type == Opcode.BINARY
def test_http_proxy_relative_request(tctx):
"""Test handling of a relative-form "GET /" in regular proxy mode."""
server = Placeholder(Server)
assert (
Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False)
>> DataReceived(tctx.client, b"GET / HTTP/1.1\r\nHost: example.com\r\n\r\n")
<< OpenConnection(server)
>> reply(None)
<< SendData(server, b"GET / HTTP/1.1\r\nHost: example.com\r\n\r\n")
>> DataReceived(server, b"HTTP/1.1 204 No Content\r\n\r\n")
<< SendData(tctx.client, b"HTTP/1.1 204 No Content\r\n\r\n")
)
assert server().address == ("example.com", 80)
def test_proxy_chain(tctx, strategy):
server = Placeholder(Server)
tctx.options.connection_strategy = strategy
playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False)
playbook >> DataReceived(tctx.client, b"CONNECT proxy:8080 HTTP/1.1\r\n\r\n")
if strategy == "eager":
playbook << OpenConnection(server)
playbook >> reply(None)
playbook << SendData(tctx.client, b"HTTP/1.1 200 Connection established\r\n\r\n")
playbook >> DataReceived(tctx.client, b"CONNECT second-proxy:8080 HTTP/1.1\r\n\r\n")
playbook << layer.NextLayerHook(Placeholder())
playbook >> reply_next_layer(lambda ctx: http.HttpLayer(ctx, HTTPMode.transparent))
playbook << SendData(tctx.client,
b"HTTP/1.1 502 Bad Gateway\r\n"
b"content-length: 198\r\n"
b"\r\n"
b"mitmproxy received an HTTP CONNECT request even though it is not running in regular/upstream mode. "
b"This usually indicates a misconfiguration, please see the mitmproxy mode documentation for details.")
assert playbook
def test_response_until_eof(tctx):
"""Test scenario where the server response body is terminated by EOF."""
server = Placeholder(Server)
assert (Playbook(http.HttpLayer(
tctx, HTTPMode.regular), hooks=False) >> DataReceived(
tctx.client,
b"GET http://example.com/ HTTP/1.1\r\nHost: example.com\r\n\r\n")
<< OpenConnection(server) >> reply(None) << SendData(
server, b"GET / HTTP/1.1\r\nHost: example.com\r\n\r\n") >>
DataReceived(server, b"HTTP/1.1 200 OK\r\n\r\nfoo") >>
ConnectionClosed(server) << CloseConnection(server) << SendData(
tctx.client, b"HTTP/1.1 200 OK\r\n\r\nfoo") << CloseConnection(
tctx.client))
def h2_layer(opts):
tctx = context.Context(
connection.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_no_headers(tctx):
"""Test that we can correctly reassemble requests/responses with no headers."""
server = Placeholder(Server)
assert (
Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False)
>> DataReceived(tctx.client, b"GET http://example.com/ HTTP/1.1\r\n\r\n")
<< OpenConnection(server)
>> reply(None)
<< SendData(server, b"GET / HTTP/1.1\r\n\r\n")
>> DataReceived(server, b"HTTP/1.1 204 No Content\r\n\r\n")
<< SendData(tctx.client, b"HTTP/1.1 204 No Content\r\n\r\n")
)
assert server().address == ("example.com", 80)
def test_http_reply_from_proxy(tctx):
"""Test a response served by mitmproxy itself."""
def reply_from_proxy(flow: HTTPFlow):
flow.response = Response.make(418)
assert (
Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False)
>> DataReceived(tctx.client, b"GET http://example.com/ HTTP/1.1\r\nHost: example.com\r\n\r\n")
<< http.HttpRequestHook(Placeholder())
>> reply(side_effect=reply_from_proxy)
<< SendData(tctx.client, b"HTTP/1.1 418 I'm a teapot\r\ncontent-length: 0\r\n\r\n")
)
def test_upgrade(tctx, proto):
"""Test a HTTP -> WebSocket upgrade with different protocols enabled"""
if proto != "websocket":
tctx.options.websocket = False
if proto != "tcp":
tctx.options.rawtcp = False
tctx.server.address = ("example.com", 80)
tctx.server.state = ConnectionState.OPEN
http_flow = Placeholder(HTTPFlow)
playbook = Playbook(http.HttpLayer(tctx, HTTPMode.transparent))
(
playbook
>> DataReceived(tctx.client,
b"GET / HTTP/1.1\r\n"
b"Connection: upgrade\r\n"
b"Upgrade: websocket\r\n"
b"Sec-WebSocket-Version: 13\r\n"
b"\r\n")
<< http.HttpRequestHeadersHook(http_flow)
>> reply()
<< http.HttpRequestHook(http_flow)
>> reply()
<< SendData(tctx.server, b"GET / HTTP/1.1\r\n"
b"Connection: upgrade\r\n"
b"Upgrade: websocket\r\n"
b"Sec-WebSocket-Version: 13\r\n"
b"\r\n")
>> DataReceived(tctx.server, b"HTTP/1.1 101 Switching Protocols\r\n"
b"Upgrade: websocket\r\n"
b"Connection: Upgrade\r\n"
b"\r\n")
<< http.HttpResponseHeadersHook(http_flow)
>> reply()
<< http.HttpResponseHook(http_flow)
>> reply()
<< SendData(tctx.client, b"HTTP/1.1 101 Switching Protocols\r\n"
b"Upgrade: websocket\r\n"
b"Connection: Upgrade\r\n"
b"\r\n")
)
if proto == "websocket":
assert playbook << WebsocketStartHook(Placeholder(WebSocketFlow))
elif proto == "tcp":
assert playbook << TcpStartHook(Placeholder(TCPFlow))
else:
assert (
playbook
<< Log("Sent HTTP 101 response, but no protocol is enabled to upgrade to.", "warn")
<< CloseConnection(tctx.client)
)
def test_body_size_limit(tctx, where, transfer_encoding):
"""Test HTTP request body_size_limit"""
tctx.options.body_size_limit = "3"
err = Placeholder(bytes)
flow = Placeholder(HTTPFlow)
if transfer_encoding == "identity":
body = b"Content-Length: 6\r\n\r\nabcdef"
else:
body = b"Transfer-Encoding: chunked\r\n\r\n6\r\nabcdef"
if where == "request":
assert (
Playbook(http.HttpLayer(tctx, HTTPMode.regular)) >> DataReceived(
tctx.client, b"POST http://example.com/ HTTP/1.1\r\n"
b"Host: example.com\r\n" + body) <<
http.HttpRequestHeadersHook(flow) >> reply()
<< http.HttpErrorHook(flow) >> reply() << SendData(
tctx.client, err) << CloseConnection(tctx.client))
assert b"413 Payload Too Large" in err()
assert b"body_size_limit" in err()
else:
server = Placeholder(Server)
assert (
Playbook(http.HttpLayer(tctx, HTTPMode.regular)) >> DataReceived(
tctx.client, b"GET http://example.com/ HTTP/1.1\r\n"
b"Host: example.com\r\n\r\n") <<
http.HttpRequestHeadersHook(flow) >> reply() <<
http.HttpRequestHook(flow) >> reply() << OpenConnection(server) >>
reply(None) << SendData(
server, b"GET / HTTP/1.1\r\n"
b"Host: example.com\r\n\r\n") >> DataReceived(
server, b"HTTP/1.1 200 OK\r\n" + body) <<
http.HttpResponseHeadersHook(flow) >> reply() <<
http.HttpErrorHook(flow) >> reply() << SendData(tctx.client, err)
<< CloseConnection(tctx.client) << CloseConnection(server))
assert b"502 Bad Gateway" in err()
assert b"body_size_limit" in err()
def test_close_during_connect_hook(tctx):
flow = Placeholder(HTTPFlow)
assert (
Playbook(http.HttpLayer(tctx, HTTPMode.regular))
>> DataReceived(tctx.client,
b'CONNECT hi.ls:443 HTTP/1.1\r\n'
b'Proxy-Connection: keep-alive\r\n'
b'Connection: keep-alive\r\n'
b'Host: hi.ls:443\r\n\r\n')
<< http.HttpConnectHook(flow)
>> ConnectionClosed(tctx.client)
<< CloseConnection(tctx.client)
>> reply(to=-3)
)
def _h2_response(chunks):
tctx = context.Context(connection.Client(("client", 1234), ("127.0.0.1", 8080), 1605699329), opts)
playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False)
server = Placeholder(connection.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_https_proxy(strategy, tctx):
"""Test a CONNECT request, followed by a HTTP GET /"""
server = Placeholder(Server)
flow = Placeholder(HTTPFlow)
playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular))
tctx.options.connection_strategy = strategy
(playbook
>> DataReceived(tctx.client, b"CONNECT example.proxy:80 HTTP/1.1\r\n\r\n")
<< http.HttpConnectHook(Placeholder())
>> reply())
if strategy == "eager":
(playbook
<< OpenConnection(server)
>> reply(None))
(playbook
<< SendData(tctx.client, b'HTTP/1.1 200 Connection established\r\n\r\n')
>> DataReceived(tctx.client, b"GET /foo?hello=1 HTTP/1.1\r\nHost: example.com\r\n\r\n")
<< layer.NextLayerHook(Placeholder())
>> reply_next_layer(lambda ctx: http.HttpLayer(ctx, HTTPMode.transparent))
<< http.HttpRequestHeadersHook(flow)
>> reply()
<< http.HttpRequestHook(flow)
>> reply())
if strategy == "lazy":
(playbook
<< OpenConnection(server)
>> reply(None))
(playbook
<< SendData(server, b"GET /foo?hello=1 HTTP/1.1\r\nHost: example.com\r\n\r\n")
>> DataReceived(server, b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World!")
<< http.HttpResponseHeadersHook(flow)
>> reply()
<< http.HttpResponseHook(flow)
>> reply()
<< SendData(tctx.client, b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World!"))
assert playbook
def test_http_client_aborts(tctx, stream):
"""Test handling of the case where a client aborts during request transmission."""
server = Placeholder(Server)
flow = Placeholder(HTTPFlow)
playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=True)
def enable_streaming(flow: HTTPFlow):
flow.request.stream = True
assert (
playbook
>> DataReceived(tctx.client, b"POST http://example.com/ HTTP/1.1\r\n"
b"Host: example.com\r\n"
b"Content-Length: 6\r\n"
b"\r\n"
b"abc")
<< http.HttpRequestHeadersHook(flow)
)
if stream:
assert (
playbook
>> reply(side_effect=enable_streaming)
<< http.HttpRequestHook(flow)
>> reply()
<< OpenConnection(server)
>> reply(None)
<< SendData(server, b"POST / HTTP/1.1\r\n"
b"Host: example.com\r\n"
b"Content-Length: 6\r\n"
b"\r\n"
b"abc")
)
else:
assert playbook >> reply()
(
playbook
>> ConnectionClosed(tctx.client)
<< CloseConnection(tctx.client)
)
if stream:
playbook << CloseConnection(server)
assert (
playbook
<< http.HttpErrorHook(flow)
>> reply()
<< None
)
assert "peer closed connection" in flow().error.msg
def test_transparent_sni(tctx):
"""Test that we keep the SNI in lazy transparent mode."""
tctx.client.sni = "example.com"
tctx.server.address = ("192.0.2.42", 443)
tctx.server.tls = True
flow = Placeholder(HTTPFlow)
server = Placeholder(Server)
assert (Playbook(http.HttpLayer(tctx, HTTPMode.transparent)) >>
DataReceived(tctx.client, b"GET / HTTP/1.1\r\n\r\n") <<
http.HttpRequestHeadersHook(flow) >> reply() <<
http.HttpRequestHook(flow) >> reply() << OpenConnection(server))
assert server().address == ("192.0.2.42", 443)
assert server().sni == "example.com"
def test_server_aborts(tctx, data):
"""Test the scenario where the server doesn't serve a response"""
server = Placeholder(Server)
flow = Placeholder(HTTPFlow)
err = Placeholder(bytes)
playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False)
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) << SendData(
server, b"GET / HTTP/1.1\r\nHost: example.com\r\n\r\n"))
if data:
playbook >> DataReceived(server, data)
assert (playbook >> ConnectionClosed(server) << CloseConnection(server)
<< http.HttpErrorHook(flow) >> reply() << SendData(
tctx.client, err) << CloseConnection(tctx.client))
assert flow().error
assert b"502 Bad Gateway" in err()
def test_connection_close_header(tctx, client_close, server_close):
"""Test that we correctly close connections if we have a `Connection: close` header."""
if not client_close and not server_close:
return
server = Placeholder(Server)
assert (Playbook(http.HttpLayer(tctx, HTTPMode.regular),
hooks=False) >> DataReceived(
tctx.client, b"GET http://example/ HTTP/1.1\r\n"
b"Host: example\r\n" + client_close + b"\r\n") <<
OpenConnection(server) >> reply(None) << SendData(
server, b"GET / HTTP/1.1\r\n"
b"Host: example\r\n" + client_close + b"\r\n") >> DataReceived(
server, b"HTTP/1.1 200 OK\r\n"
b"Content-Length: 0\r\n" + server_close + b"\r\n") <<
CloseConnection(server) << SendData(
tctx.client, b"HTTP/1.1 200 OK\r\n"
b"Content-Length: 0\r\n" + server_close + b"\r\n") <<
CloseConnection(tctx.client))
def test_request_stream_modify(tctx):
"""Test HTTP response streaming"""
server = Placeholder(Server)
def enable_streaming(flow: HTTPFlow):
flow.request.stream = lambda x: x.upper()
assert (Playbook(http.HttpLayer(tctx, HTTPMode.regular)) >> DataReceived(
tctx.client, b"POST http://example.com/ HTTP/1.1\r\n"
b"Host: example.com\r\n"
b"Content-Length: 6\r\n\r\n"
b"abc") << http.HttpRequestHeadersHook(
Placeholder(HTTPFlow)) >> reply(side_effect=enable_streaming) <<
OpenConnection(server) >> reply(None) << SendData(
server, b"POST / HTTP/1.1\r\n"
b"Host: example.com\r\n"
b"Content-Length: 6\r\n\r\n"
b"ABC"))
def h2_client(tctx: Context) -> Tuple[h2.connection.H2Connection, Playbook]:
tctx.client.alpn = b"h2"
playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular))
conn = h2.connection.H2Connection()
conn.initiate_connection()
server_preamble = Placeholder(bytes)
assert (playbook << SendData(tctx.client, server_preamble))
assert event_types(conn.receive_data(
server_preamble())) == [h2.events.RemoteSettingsChanged]
settings_ack = Placeholder(bytes)
assert (playbook >> DataReceived(tctx.client, conn.data_to_send()) <<
SendData(tctx.client, settings_ack))
assert event_types(conn.receive_data(
settings_ack())) == [h2.events.SettingsAcknowledged]
return conn, playbook
def test_http_proxy(tctx):
"""Test a simple HTTP GET / request"""
server = Placeholder(Server)
flow = Placeholder(HTTPFlow)
assert (Playbook(http.HttpLayer(tctx, HTTPMode.regular)) >> DataReceived(
tctx.client,
b"GET http://example.com/foo?hello=1 HTTP/1.1\r\nHost: example.com\r\n\r\n"
) << http.HttpRequestHeadersHook(flow) >> reply() << http.HttpRequestHook(
flow) >> reply() << OpenConnection(server) >> reply(None) << SendData(
server, b"GET /foo?hello=1 HTTP/1.1\r\nHost: example.com\r\n\r\n")
>> DataReceived(
server,
b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World") <<
http.HttpResponseHeadersHook(flow) >> reply() >> DataReceived(
server, b"!") << http.HttpResponseHook(flow) >> reply() <<
SendData(
tctx.client,
b"HTTP/1.1 200 OK\r\nContent-Length: 12\r\n\r\nHello World!"))
assert server().address == ("example.com", 80)
def test_http_expect(tctx):
"""Test handling of a 'Expect: 100-continue' header."""
server = Placeholder(Server)
assert (
Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False)
>> DataReceived(tctx.client, b"PUT http://example.com/large-file HTTP/1.1\r\n"
b"Host: example.com\r\n"
b"Content-Length: 15\r\n"
b"Expect: 100-continue\r\n\r\n")
<< SendData(tctx.client, b"HTTP/1.1 100 Continue\r\n\r\n")
>> DataReceived(tctx.client, b"lots of content")
<< OpenConnection(server)
>> reply(None)
<< SendData(server, b"PUT /large-file HTTP/1.1\r\n"
b"Host: example.com\r\n"
b"Content-Length: 15\r\n\r\n"
b"lots of content")
>> DataReceived(server, b"HTTP/1.1 201 Created\r\nContent-Length: 0\r\n\r\n")
<< SendData(tctx.client, b"HTTP/1.1 201 Created\r\nContent-Length: 0\r\n\r\n")
)
assert server().address == ("example.com", 80)
def test_http_server_aborts(tctx, stream):
"""Test handling of the case where a server aborts during response transmission."""
server = Placeholder(Server)
flow = Placeholder(HTTPFlow)
playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular))
def enable_streaming(flow: HTTPFlow):
flow.response.stream = True
assert (playbook >> DataReceived(
tctx.client, b"GET http://example.com/ HTTP/1.1\r\n"
b"Host: example.com\r\n\r\n") << http.HttpRequestHeadersHook(flow) >>
reply() << http.HttpRequestHook(flow) >> reply() <<
OpenConnection(server) >> reply(None) << SendData(
server, b"GET / HTTP/1.1\r\n"
b"Host: example.com\r\n\r\n") >> DataReceived(
server, b"HTTP/1.1 200 OK\r\n"
b"Content-Length: 6\r\n"
b"\r\n"
b"abc") << http.HttpResponseHeadersHook(flow))
if stream:
assert (playbook >> reply(side_effect=enable_streaming) << SendData(
tctx.client, b"HTTP/1.1 200 OK\r\n"
b"Content-Length: 6\r\n"
b"\r\n"
b"abc"))
else:
assert playbook >> reply()
assert (playbook >> ConnectionClosed(server) << CloseConnection(server) <<
http.HttpErrorHook(flow))
if stream:
assert (playbook >> reply() << CloseConnection(tctx.client))
else:
error_html = Placeholder(bytes)
assert (playbook >> reply() << SendData(tctx.client, error_html) <<
CloseConnection(tctx.client))
assert b"502 Bad Gateway" in error_html()
assert b"peer closed connection" in error_html()
assert "peer closed connection" in flow().error.msg
def test_response_streaming(tctx):
"""Test HTTP response streaming"""
server = Placeholder(Server)
flow = Placeholder(HTTPFlow)
def enable_streaming(flow: HTTPFlow):
flow.response.stream = lambda x: x.upper()
assert (Playbook(http.HttpLayer(tctx, HTTPMode.regular)) >> DataReceived(
tctx.client,
b"GET http://example.com/largefile HTTP/1.1\r\nHost: example.com\r\n\r\n"
) << http.HttpRequestHeadersHook(flow) >> reply() << http.HttpRequestHook(
flow) >> reply() << OpenConnection(server) >> reply(None) << SendData(
server, b"GET /largefile HTTP/1.1\r\nHost: example.com\r\n\r\n")
>> DataReceived(
server, b"HTTP/1.1 200 OK\r\nContent-Length: 6\r\n\r\nabc") <<
http.HttpResponseHeadersHook(flow) >>
reply(side_effect=enable_streaming) << SendData(
tctx.client,
b"HTTP/1.1 200 OK\r\nContent-Length: 6\r\n\r\nABC") >>
DataReceived(server, b"def") << SendData(
tctx.client, b"DEF") << http.HttpResponseHook(flow) >> reply())
def test_dont_reuse_closed(tctx):
"""Test that a closed connection is not reused."""
server = Placeholder(Server)
server2 = Placeholder(Server)
assert (
Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False) >>
DataReceived(
tctx.client,
b"GET http://example.com/ HTTP/1.1\r\nHost: example.com\r\n\r\n")
<< OpenConnection(server) >> reply(None) << SendData(
server,
b"GET / HTTP/1.1\r\nHost: example.com\r\n\r\n") >> DataReceived(
server, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n") <<
SendData(tctx.client, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")
>> ConnectionClosed(server) << CloseConnection(server) >> DataReceived(
tctx.client,
b"GET http://example.com/two HTTP/1.1\r\nHost: example.com\r\n\r\n"
) << OpenConnection(server2) >> reply(None) << SendData(
server2,
b"GET /two HTTP/1.1\r\nHost: example.com\r\n\r\n") >> DataReceived(
server2, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n") <<
SendData(tctx.client, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n"))
def test_reverse_proxy(tctx, keep_host_header):
"""Test mitmproxy in reverse proxy mode.
- make sure that we connect to the right host
- make sure that we respect keep_host_header
- make sure that we include non-standard ports in the host header (#4280)
"""
server = Placeholder(Server)
tctx.options.mode = "reverse:http://localhost:8000"
tctx.options.keep_host_header = keep_host_header
assert (
Playbook(modes.ReverseProxy(tctx), hooks=False) >> DataReceived(
tctx.client, b"GET /foo HTTP/1.1\r\n"
b"Host: example.com\r\n\r\n") << NextLayerHook(
Placeholder(NextLayer)) >>
reply_next_layer(lambda ctx: http.HttpLayer(ctx, HTTPMode.transparent))
<< OpenConnection(server) >> reply(None) << SendData(
server, b"GET /foo HTTP/1.1\r\n"
b"Host: " +
(b"example.com" if keep_host_header else b"localhost:8000") +
b"\r\n\r\n") >> DataReceived(
server, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n") <<
SendData(tctx.client, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n"))
assert server().address == ("localhost", 8000)
def test_multiple_server_connections(tctx):
"""Test multiple requests being rewritten to different targets."""
server1 = Placeholder(Server)
server2 = Placeholder(Server)
playbook = Playbook(http.HttpLayer(tctx, HTTPMode.regular), hooks=False)
def redirect(to: str):
def side_effect(flow: HTTPFlow):
flow.request.url = to
return side_effect
assert (
playbook
>> DataReceived(tctx.client, b"GET http://example.com/ HTTP/1.1\r\nHost: example.com\r\n\r\n")
<< http.HttpRequestHook(Placeholder())
>> reply(side_effect=redirect("http://one.redirect/"))
<< OpenConnection(server1)
>> reply(None)
<< SendData(server1, b"GET / HTTP/1.1\r\nHost: one.redirect\r\n\r\n")
>> DataReceived(server1, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")
<< SendData(tctx.client, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")
)
assert (
playbook
>> DataReceived(tctx.client, b"GET http://example.com/ HTTP/1.1\r\nHost: example.com\r\n\r\n")
<< http.HttpRequestHook(Placeholder())
>> reply(side_effect=redirect("http://two.redirect/"))
<< OpenConnection(server2)
>> reply(None)
<< SendData(server2, b"GET / HTTP/1.1\r\nHost: two.redirect\r\n\r\n")
>> DataReceived(server2, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")
<< SendData(tctx.client, b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n")
)
assert server1().address == ("one.redirect", 80)
assert server2().address == ("two.redirect", 80)
def test_upstream_https(tctx):
"""
Test mitmproxy in HTTPS upstream mode with another mitmproxy instance upstream.
In other words:
mitmdump --mode upstream:https://localhost:8081 --ssl-insecure
mitmdump -p 8081
curl -x localhost:8080 -k http://example.com
"""
tctx1 = Context(Client(("client", 1234), ("127.0.0.1", 8080), 1605699329),
copy.deepcopy(tctx.options))
tctx1.options.mode = "upstream:https://example.mitmproxy.org:8081"
tctx2 = Context(Client(("client", 4321), ("127.0.0.1", 8080), 1605699329),
copy.deepcopy(tctx.options))
assert tctx2.options.mode == "regular"
del tctx
proxy1 = Playbook(modes.HttpProxy(tctx1), hooks=False)
proxy2 = Playbook(modes.HttpProxy(tctx2), hooks=False)
upstream = Placeholder(Server)
server = Placeholder(Server)
clienthello = Placeholder(bytes)
serverhello = Placeholder(bytes)
request = Placeholder(bytes)
tls_finished = Placeholder(bytes)
h2_client_settings_ack = Placeholder(bytes)
response = Placeholder(bytes)
h2_server_settings_ack = Placeholder(bytes)
assert (
proxy1 >> DataReceived(
tctx1.client,
b"GET http://example.com/ HTTP/1.1\r\nHost: example.com\r\n\r\n")
<< NextLayerHook(Placeholder(NextLayer)) >>
reply_next_layer(lambda ctx: http.HttpLayer(ctx, HTTPMode.upstream)) <<
OpenConnection(upstream) >> reply(None) << TlsStartHook(Placeholder())
>> reply_tls_start(alpn=b"h2") << SendData(upstream, clienthello))
assert upstream().address == ("example.mitmproxy.org", 8081)
assert (proxy2 >> DataReceived(tctx2.client, clienthello()) <<
NextLayerHook(Placeholder(NextLayer)) >>
reply_next_layer(ClientTLSLayer) << TlsStartHook(Placeholder()) >>
reply_tls_start(alpn=b"h2") << SendData(tctx2.client, serverhello))
assert (proxy1 >> DataReceived(upstream, serverhello()) << SendData(
upstream, request))
assert (proxy2 >> DataReceived(tctx2.client, request()) << SendData(
tctx2.client, tls_finished) << NextLayerHook(Placeholder(NextLayer)) >>
reply_next_layer(lambda ctx: http.HttpLayer(ctx, HTTPMode.regular))
<< SendData(tctx2.client, h2_client_settings_ack) <<
OpenConnection(server) >> reply(None) << SendData(
server, b'GET / HTTP/1.1\r\nhost: example.com\r\n\r\n') >>
DataReceived(server,
b"HTTP/1.1 200 OK\r\nContent-Length: 0\r\n\r\n") <<
CloseConnection(server) << SendData(tctx2.client, response))
assert server().address == ("example.com", 80)
assert (proxy1 >> DataReceived(
upstream,
tls_finished() + h2_client_settings_ack() + response()) << SendData(
upstream, h2_server_settings_ack) << SendData(
tctx1.client, b"HTTP/1.1 200 OK\r\ncontent-length: 0\r\n\r\n"))
