diff options
Diffstat (limited to 'libmproxy')
| -rw-r--r-- | libmproxy/cmdline.py | 18 | ||||
| -rw-r--r-- | libmproxy/protocol/http.py | 10 | ||||
| -rw-r--r-- | libmproxy/protocol/tls.py | 8 | ||||
| -rw-r--r-- | libmproxy/proxy/config.py | 8 | ||||
| -rw-r--r-- | libmproxy/proxy/root_context.py | 36 |
5 files changed, 57 insertions, 23 deletions
diff --git a/libmproxy/cmdline.py b/libmproxy/cmdline.py index 7f6f69ef..3779953f 100644 --- a/libmproxy/cmdline.py +++ b/libmproxy/cmdline.py @@ -1,11 +1,11 @@ from __future__ import absolute_import import os import re + import configargparse -from netlib.tcp import Address, sslversion_choices +from netlib.tcp import Address, sslversion_choices import netlib.utils - from . import filt, utils, version from .proxy import config @@ -358,6 +358,20 @@ def proxy_options(parser): action="store", type=int, dest="port", default=8080, help="Proxy service port." ) + http2 = group.add_mutually_exclusive_group() + http2.add_argument("--http2", action="store_true", dest="http2") + http2.add_argument("--no-http2", action="store_false", dest="http2", + help="Explicitly enable/disable experimental HTTP2 support. " + "Disabled by default. " + "Default value will change in a future version." + ) + rawtcp = group.add_mutually_exclusive_group() + rawtcp.add_argument("--raw-tcp", action="store_true", dest="rawtcp") + rawtcp.add_argument("--no-raw-tcp", action="store_false", dest="rawtcp", + help="Explicitly enable/disable experimental raw tcp support. " + "Disabled by default. " + "Default value will change in a future version." + ) def proxy_ssl_options(parser): diff --git a/libmproxy/protocol/http.py b/libmproxy/protocol/http.py index 52164241..308fa0a0 100644 --- a/libmproxy/protocol/http.py +++ b/libmproxy/protocol/http.py @@ -16,7 +16,7 @@ from ..models import ( HTTPFlow, HTTPRequest, HTTPResponse, make_error_response, make_connect_response, Error ) from .base import Layer, Kill - +from .rawtcp import RawTCPLayer class _HttpLayer(Layer): supports_streaming = False @@ -364,7 +364,13 @@ class HttpLayer(Layer): if self.check_close_connection(flow): return - # TODO: Implement HTTP Upgrade + # Handle 101 Switching Protocols + # It may be useful to pass additional args (such as the upgrade header) + # to next_layer in the future + if flow.response.status_code == 101: + layer = self.ctx.next_layer(self) + layer() + return # Upstream Proxy Mode: Handle CONNECT if flow.request.form_in == "authority" and flow.response.code == 200: diff --git a/libmproxy/protocol/tls.py b/libmproxy/protocol/tls.py index 6e8535ae..2cddb1dd 100644 --- a/libmproxy/protocol/tls.py +++ b/libmproxy/protocol/tls.py @@ -3,6 +3,8 @@ from __future__ import (absolute_import, print_function, division) import struct from construct import ConstructError +import six +import sys from netlib.tcp import NetLibError, NetLibInvalidCertificateError from netlib.http.http1 import HTTP1Protocol @@ -387,7 +389,7 @@ class TlsLayer(Layer): self._establish_tls_with_client() except: pass - raise e + six.reraise(*sys.exc_info()) self._establish_tls_with_client() @@ -416,9 +418,11 @@ class TlsLayer(Layer): # and mitmproxy would enter TCP passthrough mode, which we want to avoid. deprecated_http2_variant = lambda x: x.startswith("h2-") or x.startswith("spdy") if self.client_alpn_protocols: - alpn = filter(lambda x: not deprecated_http2_variant(x), self.client_alpn_protocols) + alpn = [x for x in self.client_alpn_protocols if not deprecated_http2_variant(x)] else: alpn = None + if alpn and "h2" in alpn and not self.config.http2 : + alpn.remove("h2") ciphers_server = self.config.ciphers_server if not ciphers_server: diff --git a/libmproxy/proxy/config.py b/libmproxy/proxy/config.py index 2a1b84cb..cd9eda5a 100644 --- a/libmproxy/proxy/config.py +++ b/libmproxy/proxy/config.py @@ -54,6 +54,8 @@ class ProxyConfig: authenticator=None, ignore_hosts=tuple(), tcp_hosts=tuple(), + http2=False, + rawtcp=False, ciphers_client=None, ciphers_server=None, certs=tuple(), @@ -78,6 +80,8 @@ class ProxyConfig: self.check_ignore = HostMatcher(ignore_hosts) self.check_tcp = HostMatcher(tcp_hosts) + self.http2 = http2 + self.rawtcp = rawtcp self.authenticator = authenticator self.cadir = os.path.expanduser(cadir) self.certstore = certutils.CertStore.from_store( @@ -183,6 +187,8 @@ def process_proxy_options(parser, options): upstream_server=upstream_server, ignore_hosts=options.ignore_hosts, tcp_hosts=options.tcp_hosts, + http2=options.http2, + rawtcp=options.rawtcp, authenticator=authenticator, ciphers_client=options.ciphers_client, ciphers_server=options.ciphers_server, @@ -192,4 +198,4 @@ def process_proxy_options(parser, options): ssl_verify_upstream_cert=options.ssl_verify_upstream_cert, ssl_verify_upstream_trusted_cadir=options.ssl_verify_upstream_trusted_cadir, ssl_verify_upstream_trusted_ca=options.ssl_verify_upstream_trusted_ca - )
\ No newline at end of file + ) diff --git a/libmproxy/proxy/root_context.py b/libmproxy/proxy/root_context.py index dccdf023..54bea1db 100644 --- a/libmproxy/proxy/root_context.py +++ b/libmproxy/proxy/root_context.py @@ -1,8 +1,13 @@ from __future__ import (absolute_import, print_function, division) +import string +import sys +import six + +from libmproxy.exceptions import ProtocolException from netlib.http.http1 import HTTP1Protocol from netlib.http.http2 import HTTP2Protocol - +from netlib.tcp import NetLibError from ..protocol import ( RawTCPLayer, TlsLayer, Http1Layer, Http2Layer, is_tls_record_magic, ServerConnectionMixin ) @@ -48,7 +53,10 @@ class RootContext(object): if self.config.check_ignore(top_layer.server_conn.address): return RawTCPLayer(top_layer, logging=False) - d = top_layer.client_conn.rfile.peek(3) + try: + d = top_layer.client_conn.rfile.peek(3) + except NetLibError as e: + six.reraise(ProtocolException, ProtocolException(str(e)), sys.exc_info()[2]) client_tls = is_tls_record_magic(d) # 2. Always insert a TLS layer, even if there's neither client nor server tls. @@ -82,21 +90,17 @@ class RootContext(object): if alpn == HTTP1Protocol.ALPN_PROTO_HTTP1: return Http1Layer(top_layer, 'transparent') - # 6. Assume HTTP1 by default - return Http1Layer(top_layer, 'transparent') + # 6. Check for raw tcp mode + is_ascii = ( + len(d) == 3 and + # better be safe here and don't expect uppercase... + all(x in string.ascii_letters for x in d) + ) + if self.config.rawtcp and not is_ascii: + return RawTCPLayer(top_layer) - # In a future version, we want to implement TCP passthrough as the last fallback, - # but we don't have the UI part ready for that. - # - # d = top_layer.client_conn.rfile.peek(3) - # is_ascii = ( - # len(d) == 3 and - # # better be safe here and don't expect uppercase... - # all(x in string.ascii_letters for x in d) - # ) - # # TODO: This could block if there are not enough bytes available? - # d = top_layer.client_conn.rfile.peek(len(HTTP2Protocol.CLIENT_CONNECTION_PREFACE)) - # is_http2_magic = (d == HTTP2Protocol.CLIENT_CONNECTION_PREFACE) + # 7. Assume HTTP1 by default + return Http1Layer(top_layer, 'transparent') def log(self, msg, level, subs=()): """ |