mirror of
https://github.com/Grasscutters/mitmproxy.git
synced 2024-11-23 08:11:00 +00:00
130 lines
3.4 KiB
Python
130 lines
3.4 KiB
Python
from .. import stateobject, utils, version
|
|
from ..proxy.connection import ClientConnection, ServerConnection
|
|
import copy
|
|
|
|
|
|
class BackreferenceMixin(object):
|
|
"""
|
|
If an attribute from the _backrefattr tuple is set,
|
|
this mixin sets a reference back on the attribute object.
|
|
Example:
|
|
e = Error()
|
|
f = Flow()
|
|
f.error = e
|
|
assert f is e.flow
|
|
"""
|
|
_backrefattr = tuple()
|
|
|
|
def __setattr__(self, key, value):
|
|
super(BackreferenceMixin, self).__setattr__(key, value)
|
|
if key in self._backrefattr and value is not None:
|
|
setattr(value, self._backrefname, self)
|
|
|
|
|
|
class Error(stateobject.SimpleStateObject):
|
|
"""
|
|
An Error.
|
|
|
|
This is distinct from an HTTP error response (say, a code 500), which
|
|
is represented by a normal Response object. This class is responsible
|
|
for indicating errors that fall outside of normal HTTP communications,
|
|
like interrupted connections, timeouts, protocol errors.
|
|
|
|
Exposes the following attributes:
|
|
|
|
flow: Flow object
|
|
msg: Message describing the error
|
|
timestamp: Seconds since the epoch
|
|
"""
|
|
def __init__(self, msg, timestamp=None):
|
|
"""
|
|
@type msg: str
|
|
@type timestamp: float
|
|
"""
|
|
self.flow = None # will usually be set by the flow backref mixin
|
|
self.msg = msg
|
|
self.timestamp = timestamp or utils.timestamp()
|
|
|
|
_stateobject_attributes = dict(
|
|
msg=str,
|
|
timestamp=float
|
|
)
|
|
|
|
def __str__(self):
|
|
return self.msg
|
|
|
|
@classmethod
|
|
def _from_state(cls, state):
|
|
f = cls(None) # the default implementation assumes an empty constructor. Override accordingly.
|
|
f._load_state(state)
|
|
return f
|
|
|
|
def copy(self):
|
|
c = copy.copy(self)
|
|
return c
|
|
|
|
|
|
class Flow(stateobject.SimpleStateObject, BackreferenceMixin):
|
|
def __init__(self, conntype, client_conn, server_conn):
|
|
self.conntype = conntype
|
|
self.client_conn = client_conn
|
|
"""@type: ClientConnection"""
|
|
self.server_conn = server_conn
|
|
"""@type: ServerConnection"""
|
|
|
|
self.error = None
|
|
"""@type: Error"""
|
|
self._backup = None
|
|
|
|
_backrefattr = ("error",)
|
|
_backrefname = "flow"
|
|
|
|
_stateobject_attributes = dict(
|
|
error=Error,
|
|
client_conn=ClientConnection,
|
|
server_conn=ServerConnection,
|
|
conntype=str
|
|
)
|
|
|
|
def _get_state(self):
|
|
d = super(Flow, self)._get_state()
|
|
d.update(version=version.IVERSION)
|
|
return d
|
|
|
|
def __eq__(self, other):
|
|
return self is other
|
|
|
|
def copy(self):
|
|
f = copy.copy(self)
|
|
|
|
f.client_conn = self.client_conn.copy()
|
|
f.server_conn = self.server_conn.copy()
|
|
|
|
if self.error:
|
|
f.error = self.error.copy()
|
|
return f
|
|
|
|
def modified(self):
|
|
"""
|
|
Has this Flow been modified?
|
|
"""
|
|
if self._backup:
|
|
return self._backup != self._get_state()
|
|
else:
|
|
return False
|
|
|
|
def backup(self, force=False):
|
|
"""
|
|
Save a backup of this Flow, which can be reverted to using a
|
|
call to .revert().
|
|
"""
|
|
if not self._backup:
|
|
self._backup = self._get_state()
|
|
|
|
def revert(self):
|
|
"""
|
|
Revert to the last backed up state.
|
|
"""
|
|
if self._backup:
|
|
self._load_state(self._backup)
|
|
self._backup = None |