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"""
We try to be very hygienic regarding the exceptions we throw:
Every Exception mitmproxy raises shall be a subclass of ProxyException.
See also: http://lucumr.pocoo.org/2014/10/16/on-error-handling/
"""
from __future__ import absolute_import, print_function, division
import sys
import traceback
class ProxyException(Exception):
"""
Base class for all exceptions thrown by mitmproxy.
"""
def __init__(self, message=None):
super(ProxyException, self).__init__(message)
class Kill(ProxyException):
"""
Signal that both client and server connection(s) should be killed immediately.
"""
pass
class ProtocolException(ProxyException):
pass
class TlsProtocolException(ProtocolException):
pass
class ClientHandshakeException(TlsProtocolException):
def __init__(self, message, server):
super(ClientHandshakeException, self).__init__(message)
self.server = server
class Socks5ProtocolException(ProtocolException):
pass
class HttpProtocolException(ProtocolException):
pass
class Http2ProtocolException(ProtocolException):
pass
class ServerException(ProxyException):
pass
class ContentViewException(ProxyException):
pass
class ReplayException(ProxyException):
pass
class ScriptException(ProxyException):
@classmethod
def from_exception_context(cls, cut_tb=1):
"""
Must be called while the current stack handles an exception.
Args:
cut_tb: remove N frames from the stack trace to hide internal calls.
"""
exc_type, exc_value, exc_traceback = sys.exc_info()
while cut_tb > 0:
exc_traceback = exc_traceback.tb_next
cut_tb -= 1
tb = "".join(traceback.format_exception(exc_type, exc_value, exc_traceback))
return cls(tb)
class FlowReadException(ProxyException):
pass
class ControlException(ProxyException):
pass
class OptionsError(Exception):
pass
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