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import sys
import traceback
from mitmproxy import exceptions
from mitmproxy import connections
from mitmproxy import controller # noqa
from mitmproxy import http
from mitmproxy import log
from mitmproxy import platform
from mitmproxy.proxy import config
from mitmproxy.proxy import modes
from mitmproxy.proxy import root_context
from mitmproxy.net import tcp
from mitmproxy.net.http import http1
from mitmproxy.utils import human
class DummyServer:
bound = False
def __init__(self, config=None):
self.config = config
self.address = "dummy"
def set_channel(self, channel):
pass
def serve_forever(self):
pass
def shutdown(self):
pass
class ProxyServer(tcp.TCPServer):
allow_reuse_address = True
bound = True
channel: controller.Channel
def __init__(self, config: config.ProxyConfig) -> None:
"""
Raises ServerException if there's a startup problem.
"""
self.config = config
try:
super().__init__(
(config.options.listen_host, config.options.listen_port)
)
if config.options.mode == "transparent":
platform.init_transparent_mode()
except Exception as e:
if self.socket:
self.socket.close()
raise exceptions.ServerException(
'Error starting proxy server: ' + repr(e)
) from e
def set_channel(self, channel):
self.channel = channel
def handle_client_connection(self, conn, client_address):
h = ConnectionHandler(
conn,
client_address,
self.config,
self.channel
)
h.handle()
class ConnectionHandler:
def __init__(self, client_conn, client_address, config, channel):
self.config: config.ProxyConfig = config
self.client_conn = connections.ClientConnection(
client_conn,
client_address,
None)
"""@type: mitmproxy.proxy.connection.ClientConnection"""
self.channel = channel
"""@type: mitmproxy.controller.Channel"""
def _create_root_layer(self):
root_ctx = root_context.RootContext(
self.client_conn,
self.config,
self.channel
)
mode = self.config.options.mode
if mode.startswith("upstream:"):
return modes.HttpUpstreamProxy(
root_ctx,
self.config.upstream_server.address
)
elif mode == "transparent":
return modes.TransparentProxy(root_ctx)
elif mode.startswith("reverse:"):
server_tls = self.config.upstream_server.scheme == "https"
return modes.ReverseProxy(
root_ctx,
self.config.upstream_server.address,
server_tls
)
elif mode == "socks5":
return modes.Socks5Proxy(root_ctx)
elif mode == "regular":
return modes.HttpProxy(root_ctx)
elif callable(mode): # pragma: no cover
return mode(root_ctx)
else: # pragma: no cover
raise ValueError("Unknown proxy mode: %s" % mode)
def handle(self):
self.log("clientconnect", "info")
root_layer = None
try:
root_layer = self._create_root_layer()
root_layer = self.channel.ask("clientconnect", root_layer)
root_layer()
except exceptions.Kill:
self.log("Connection killed", "info")
except exceptions.ProtocolException as e:
if isinstance(e, exceptions.ClientHandshakeException):
self.log(
"Client Handshake failed. "
"The client may not trust the proxy's certificate for {}.".format(e.server),
"warn"
)
self.log(repr(e), "debug")
elif isinstance(e, exceptions.InvalidServerCertificate):
self.log(str(e), "warn")
self.log("Invalid certificate, closing connection. Pass --ssl-insecure to disable validation.", "warn")
else:
self.log(str(e), "warn")
self.log(repr(e), "debug")
# If an error propagates to the topmost level,
# we send an HTTP error response, which is both
# understandable by HTTP clients and humans.
try:
error_response = http.make_error_response(502, repr(e))
self.client_conn.send(http1.assemble_response(error_response))
except exceptions.TcpException:
pass
except Exception:
self.log(traceback.format_exc(), "error")
print(traceback.format_exc(), file=sys.stderr)
print("mitmproxy has crashed!", file=sys.stderr)
print("Please lodge a bug report at: https://github.com/mitmproxy/mitmproxy", file=sys.stderr)
self.log("clientdisconnect", "info")
if root_layer is not None:
self.channel.tell("clientdisconnect", root_layer)
self.client_conn.finish()
def log(self, msg, level):
msg = "{}: {}".format(human.format_address(self.client_conn.address), msg)
self.channel.tell("log", log.LogEntry(msg, level))
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