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6 Commits
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fixeria/th
Author | SHA1 | Date |
---|---|---|
Vadim Yanitskiy | dbb66828ef | |
Vadim Yanitskiy | c81e0e2ad8 | |
Vadim Yanitskiy | 91abeb7220 | |
Vadim Yanitskiy | c58e7e3f07 | |
Vadim Yanitskiy | af18b58e1f | |
Vadim Yanitskiy | 05c71259f6 |
|
@ -0,0 +1,191 @@
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|||
# This file is a part of sedbgmux, an open source DebugMux client.
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# Copyright (c) 2022 Vadim Yanitskiy <axilirator@gmail.com>
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#
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# SPDX-License-Identifier: GPL-3.0-or-later
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful, but
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# WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import logging as log
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import threading
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import socket
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import queue
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import enum
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import abc
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import sys
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from typing import Any, Optional
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from construct import Container
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from proto import DbgMuxFrame
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class DbgMuxFrameHandler(abc.ABC):
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''' Abstract DebugMux frame handler '''
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_tx_queue: Optional[queue.Queue] = None
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def send(self, msg_type: DbgMuxFrame.MsgType, msg: Any = b''):
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''' Called by child classes to send some message '''
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assert self._tx_queue is not None
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self._tx_queue.put((msg_type, msg))
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@abc.abstractmethod
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def _handle_frame(self, frame: Container) -> None:
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''' Handle the given DebugMux frame '''
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class ConnState(enum.Enum):
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''' Connection state for DbgMuxConnHandler '''
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NotEstablished = enum.auto()
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Establishing = enum.auto()
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Established = enum.auto()
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class DbgMuxConnHandler(DbgMuxFrameHandler):
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''' Abstract DebugMux connection handler '''
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def __init__(self):
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self.conn_state: ConnState = ConnState.NotEstablished
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self.ConnRef: int = 0xffff
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self.DPRef: int = 0xffff
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def establish(self, DPRef: int) -> None:
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assert self.conn_state == ConnState.NotEstablished
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log.info("Establishing connection with DPRef=0x%04x", DPRef)
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self.send(DbgMuxFrame.MsgType.ConnEstablish, dict(DPRef=DPRef))
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self.conn_state = ConnState.Establishing
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self.DPRef = DPRef
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def send_data(self, data: bytes) -> None:
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''' Called by child classes to send connection data '''
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assert self.conn_state == ConnState.Established
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msg = dict(ConnRef=self.ConnRef, Data=data)
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self.send(DbgMuxFrame.MsgType.ConnData, msg)
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def _match(self, frame: Container,
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msg_type: DbgMuxFrame.MsgType,
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msg_fields: dict = { }) -> bool:
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if frame['MsgType'] != msg_type:
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return False
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for (key, val) in msg_fields.items():
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if key not in frame['Msg']:
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return False
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if frame['Msg'][key] != val:
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return False
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return True
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def _handle_frame(self, frame: Container) -> None:
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''' Handle the given DebugMux frame '''
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if self.conn_state == ConnState.Established:
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fields = dict(ConnRef=self.ConnRef)
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if self._match(frame, DbgMuxFrame.MsgType.ConnData, fields):
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self._handle_data(frame['Msg']['Data'])
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self.send(DbgMuxFrame.MsgType.Ack)
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raise StopIteration
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elif self._match(frame, DbgMuxFrame.MsgType.ConnTerminated, fields):
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log.info('Connection terminated (DPRef=0x%04x, ConnRef=0x%04x)',
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self.DPRef, self.ConnRef)
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self.conn_state = ConnState.NotEstablished
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self._handle_terminate()
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self.send(DbgMuxFrame.MsgType.Ack)
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raise StopIteration
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elif self.conn_state == ConnState.Establishing:
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# Match ConnEstablished with our DPRef and any ConnRef
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if self._match(frame, DbgMuxFrame.MsgType.ConnEstablished, dict(DPRef=self.DPRef)):
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log.info('Connection established (DPRef=0x%04x, ConnRef=0x%04x)',
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self.DPRef, frame['Msg']['ConnRef'])
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self.conn_state = ConnState.Established
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self.ConnRef = frame['Msg']['ConnRef']
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self._handle_establish()
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self.send(DbgMuxFrame.MsgType.Ack)
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raise StopIteration
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@abc.abstractmethod
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def _handle_data(self, data: bytes) -> None:
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''' Called on reciept of connection data '''
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@abc.abstractmethod
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def _handle_establish(self) -> None:
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''' Called on connection establishment '''
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@abc.abstractmethod
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def _handle_terminate(self) -> None:
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''' Called on connection termination '''
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class DbgMuxConnInteractiveTerminal(DbgMuxConnHandler):
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def __init__(self, *args, **kw):
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self.attached: bool = False
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super().__init__(*args)
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def attach(self):
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self.attached = True
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while True:
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try:
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line = input()
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if self.conn_state == ConnState.Established:
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self.send_data(bytes(line, 'ascii'))
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except (KeyboardInterrupt, EOFError) as e:
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break
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self.attached = False
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def _handle_data(self, data: bytes) -> None:
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if self.attached:
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sys.stdout.write(data.decode('ascii'))
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def _handle_establish(self) -> None:
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pass
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def _handle_terminate(self) -> None:
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pass
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class DbgMuxConnUdpBridge(DbgMuxConnHandler):
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DGRAM_MAX_LEN: int = 1024
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def __init__(self, *args, **kw):
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super().__init__(*args)
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self.raddr: str = kw.get('raddr', '127.0.0.1')
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self.rport: int = kw.get('rport', 9999)
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self.laddr: str = kw.get('laddr', '127.0.0.1')
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self.lport: int = kw.get('lport', 8888)
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self._sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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self._sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
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self._sock.bind((self.laddr, self.lport))
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self._sock.settimeout(0.5)
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self._thread = threading.Thread(target=self._worker,
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daemon=True)
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self._shutdown = threading.Event()
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def _worker(self) -> None:
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while not self._shutdown.is_set():
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try:
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(data, addr) = self._sock.recvfrom(self.DGRAM_MAX_LEN)
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if self.conn_state == ConnState.Established:
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self.send_data(data)
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except TimeoutError:
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pass
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def _handle_data(self, data: bytes) -> None:
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self._sock.sendto(data, (self.raddr, self.rport))
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def _handle_establish(self) -> None:
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self._shutdown.clear()
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self._thread.start()
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def _handle_terminate(self) -> None:
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self._shutdown.set()
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123
peer.py
123
peer.py
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@ -17,21 +17,138 @@
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import logging as log
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import threading
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import queue
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from typing import Any, Optional
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from construct import Const, Container, Int16ul
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from handlers import DbgMuxFrameHandler
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from transport import Transport
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from proto import DbgMuxFrame
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class DbgMuxFrameDisp:
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''' DebugMux frame dispatcher '''
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def __init__(self, rxq: queue.Queue, txq: queue.Queue):
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self.__hlist = list()
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self._rx_queue = rxq
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self._tx_queue = txq
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self._thread = threading.Thread(target=self._worker,
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name='DbgMuxPeer-Disp',
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daemon=True)
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self._shutdown = threading.Event()
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def start(self) -> None:
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self._shutdown.clear()
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self._thread.start()
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def stop(self) -> None:
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self._shutdown.set()
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self._thread.join()
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def find_by_name(self, name: str) -> Optional[DbgMuxFrameHandler]:
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for (hname, hinst) in self.__hlist:
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if hname == name:
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return hinst
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return None
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def register(self, inst: DbgMuxFrameHandler,
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name: Optional[str] = None) -> None:
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if name is not None and self.find_by_name(name):
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raise FileExistsError
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self.__hlist.append((name, inst))
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# Give a handler access to the Tx queue
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inst._tx_queue = self._tx_queue
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def unregister(self, name: str):
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inst = self.find_by_name(name)
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if inst is None:
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raise FileNotFoundError
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self.__hlist.remove((name, inst))
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def _worker(self) -> None:
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while not self._shutdown.is_set():
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try:
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frame = self._rx_queue.get(block=True, timeout=0.5)
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self._dispatch(frame)
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except queue.Empty:
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pass
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log.debug('Thread \'%s\' is shutting down', threading.current_thread().name)
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def _dispatch(self, frame: DbgMuxFrame) -> None:
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for (hname, hinst) in self.__hlist:
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try:
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hinst._handle_frame(frame)
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except StopIteration:
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return
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except Exception as e:
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log.error("Handler '%s' raised an exception: %s", hname, e)
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# TODO: remove this handler?
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log.error("DebugMux message %s was not handled, dropping...", frame['Msg'])
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class DbgMuxPeer:
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def __init__(self, io: Transport):
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self.tx_count: int = 0
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self.rx_count: int = 0
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self.io = io
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# Threads handling Rx/Tx frames
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self._rx_thread = threading.Thread(target=self._rx_worker,
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name='DbgMuxPeer-Rx',
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daemon=True)
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self._tx_thread = threading.Thread(target=self._tx_worker,
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name='DbgMuxPeer-Tx',
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daemon=True)
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self._shutdown = threading.Event()
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# Internal queues for Rx/Tx frames
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self._rx_queue = queue.Queue()
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self._tx_queue = queue.Queue()
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# Init frame dispatcher
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self.disp = DbgMuxFrameDisp(self._rx_queue,
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self._tx_queue)
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def start(self) -> None:
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self._shutdown.clear()
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self._rx_thread.start()
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self._tx_thread.start()
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self.disp.start()
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def stop(self) -> None:
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# Set the shutdown event
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self._shutdown.set()
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# Wait for both threads to terminate
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self._tx_thread.join()
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self._rx_thread.join()
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self.disp.stop()
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def _rx_worker(self) -> None:
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while not self._shutdown.is_set():
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frame = self._recv() # blocking until timeout
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if frame is not None:
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self._rx_queue.put(frame)
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log.debug('Thread \'%s\' is shutting down', threading.current_thread().name)
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def _tx_worker(self) -> None:
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while not self._shutdown.is_set():
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try:
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(msg_type, msg) = self._tx_queue.get(block=True, timeout=0.5)
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self._send(msg_type, msg)
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self._tx_queue.task_done()
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except queue.Empty:
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pass
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log.debug('Thread \'%s\' is shutting down', threading.current_thread().name)
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def send(self, msg_type: DbgMuxFrame.MsgType, msg: Any = b'') -> None:
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''' Send a single message (non-blocking call) '''
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self._tx_queue.put((msg_type, msg))
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def _send(self, msg_type: DbgMuxFrame.MsgType, msg: Any = b'') -> None:
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# Encode the inner message first
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msg_data = DbgMuxFrame.Msg.build(msg, MsgType=msg_type)
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@ -63,7 +180,11 @@ class DbgMuxPeer:
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if msg_type != DbgMuxFrame.MsgType.Ack:
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self.tx_count += 1
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def recv(self) -> Optional[Container]:
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def recv(self, timeout: Optional[float] = None) -> Container:
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''' Receive a single message (blocking call) '''
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return self._rx_queue.get(block=True, timeout=timeout)
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def _recv(self) -> Optional[Container]:
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frame: bytes = b''
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frame += self.io.read(2) # Magic
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if frame == b'':
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|
|
146
sedbgmux.py
146
sedbgmux.py
|
@ -23,11 +23,74 @@ import argparse
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import cmd2
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import enum
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import sys
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import time
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from transport import TransportModem
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from proto import DbgMuxFrame
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from peer import DbgMuxPeer
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from construct import Container
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from handlers import DbgMuxFrameHandler
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from handlers import DbgMuxConnUdpBridge
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from handlers import DbgMuxConnInteractiveTerminal
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class CommonFrameHandler(DbgMuxFrameHandler):
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''' Handles some common messages '''
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def __init__(self, cmd2):
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self.cmd2 = cmd2
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def _handle_frame(self, frame: Container) -> None:
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if frame['MsgType'] == DbgMuxFrame.MsgType.Ident:
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log.info("Identified target: '%s', IMEI=%s",
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frame['Msg']['Ident'][:-15],
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frame['Msg']['Ident'][-15:])
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elif frame['MsgType'] == DbgMuxFrame.MsgType.DPAnnounce:
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log.info("Data Provider available (DPRef=0x%04x): '%s'",
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frame['Msg']['DPRef'], frame['Msg']['Name'])
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elif frame['MsgType'] == DbgMuxFrame.MsgType.FlowControl:
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log.warning("Rx FlowControl message, which is not yet supported")
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elif frame['MsgType'] == DbgMuxFrame.MsgType.ConnEstablished \
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and frame['Msg']['ConnRef'] == 0xffff:
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log.warning("Connection establishment failed, "
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"no such DPRef=0x%04x?", frame['Msg']['DPRef'])
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elif frame['MsgType'] == DbgMuxFrame.MsgType.ConnTerminated \
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and frame['Msg']['ConnRef'] == 0xffff:
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log.warning("Connection termination failed, "
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"no such DPRef=0x%04x?", frame['Msg']['DPRef'])
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elif frame['MsgType'] == DbgMuxFrame.MsgType.Ack:
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raise StopIteration
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else: # To be consumed by other handlers
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return
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self.send(DbgMuxFrame.MsgType.Ack)
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raise StopIteration
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|
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|
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class PingPongHandler(DbgMuxFrameHandler):
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''' Handles DbgMuxFrame.MsgType.Pong '''
|
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def __init__(self):
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self.expect_pong: bool = False
|
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|
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def ping(self, payload: str):
|
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log.info('Tx Ping with payload \'%s\'', payload)
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self.send(DbgMuxFrame.MsgType.Ping, payload)
|
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self.expect_pong = True
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# TODO: start a timer?
|
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|
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def handle_pong(self, payload: str):
|
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if not self.expect_pong:
|
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log.warning('Rx unexpected Pong, sending ACK anyway')
|
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return
|
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log.info('Rx Pong with payload \'%s\'', payload)
|
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self.expect_pong = False
|
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|
||||
def _handle_frame(self, frame: Container) -> None:
|
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if frame['MsgType'] == DbgMuxFrame.MsgType.Pong:
|
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self.handle_pong(frame['Msg'])
|
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self.send(DbgMuxFrame.MsgType.Ack)
|
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raise StopIteration
|
||||
|
||||
class SEDbgMuxApp(cmd2.Cmd):
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DESC = 'DebugMux client for [Sony] Ericsson phones and modems'
|
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|
@ -48,6 +111,10 @@ class SEDbgMuxApp(cmd2.Cmd):
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|||
self.transport = TransportModem(self.argv)
|
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self.peer = DbgMuxPeer(self.transport)
|
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|
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# Register DebugMux frame handlers
|
||||
self.peer.disp.register(CommonFrameHandler(self), 'Common')
|
||||
self.peer.disp.register(PingPongHandler(), 'PingPong')
|
||||
|
||||
# Modem connection state
|
||||
self.set_connected(False)
|
||||
|
||||
|
@ -63,11 +130,13 @@ class SEDbgMuxApp(cmd2.Cmd):
|
|||
def do_connect(self, opts) -> None:
|
||||
''' Connect to the modem and switch it to DebugMux mode '''
|
||||
self.transport.connect()
|
||||
self.peer.start()
|
||||
self.set_connected(True)
|
||||
|
||||
@cmd2.with_category(CATEGORY_CONN)
|
||||
def do_disconnect(self, opts) -> None:
|
||||
''' Disconnect from the modem '''
|
||||
self.peer.stop()
|
||||
self.transport.disconnect()
|
||||
self.set_connected(False)
|
||||
|
||||
|
@ -86,23 +155,8 @@ class SEDbgMuxApp(cmd2.Cmd):
|
|||
def do_enquiry(self, opts) -> None:
|
||||
''' Enquiry target identifier and available Data Providers '''
|
||||
self.peer.send(DbgMuxFrame.MsgType.Enquiry)
|
||||
while True:
|
||||
f = self.peer.recv()
|
||||
if f['MsgType'] == DbgMuxFrame.MsgType.Ident:
|
||||
log.info("Identified target: '%s', IMEI=%s",
|
||||
f['Msg']['Ident'][:-15],
|
||||
f['Msg']['Ident'][-15:])
|
||||
elif f['MsgType'] == DbgMuxFrame.MsgType.DPAnnounce:
|
||||
log.info("Data Provider available (DPRef=0x%04x): '%s'",
|
||||
f['Msg']['DPRef'], f['Msg']['Name'])
|
||||
|
||||
# No more data in the buffer
|
||||
# FIXME: layer violation!
|
||||
if self.transport._sl.in_waiting == 0:
|
||||
break
|
||||
|
||||
# ACKnowledge reception of the info
|
||||
self.peer.send(DbgMuxFrame.MsgType.Ack)
|
||||
# The responce to be handled by CommonFrameHandler
|
||||
time.sleep(0.5)
|
||||
|
||||
ping_parser = cmd2.Cmd2ArgumentParser()
|
||||
ping_parser.add_argument('-p', '--payload',
|
||||
|
@ -113,52 +167,42 @@ class SEDbgMuxApp(cmd2.Cmd):
|
|||
@cmd2.with_category(CATEGORY_DBGMUX)
|
||||
def do_ping(self, opts) -> None:
|
||||
''' Send a Ping to the target, expect Pong '''
|
||||
log.info('Tx Ping with payload \'%s\'', opts.payload)
|
||||
self.peer.send(DbgMuxFrame.MsgType.Ping, opts.payload)
|
||||
|
||||
f = self.peer.recv()
|
||||
assert f['MsgType'] == DbgMuxFrame.MsgType.Pong
|
||||
log.info('Rx Pong with payload \'%s\'', f['Msg'])
|
||||
self.peer.send(DbgMuxFrame.MsgType.Ack)
|
||||
hinst = self.peer.disp.find_by_name('PingPong')
|
||||
hinst.ping(opts.payload)
|
||||
|
||||
establish_parser = cmd2.Cmd2ArgumentParser()
|
||||
establish_parser.add_argument('DPRef',
|
||||
type=lambda v: int(v, 16),
|
||||
help='DPRef of a Data Provider in hex')
|
||||
establish_parser.add_argument('mode',
|
||||
choices=['interactive', 'udp-bridge'],
|
||||
help='Connection mode')
|
||||
|
||||
@cmd2.with_argparser(establish_parser)
|
||||
@cmd2.with_category(CATEGORY_DBGMUX)
|
||||
def do_establish(self, opts) -> None:
|
||||
''' Establish connection with a Data Provider '''
|
||||
log.info("Establishing connection with DPRef=0x%04x", opts.DPRef)
|
||||
self.peer.send(DbgMuxFrame.MsgType.ConnEstablish,
|
||||
dict(DPRef=opts.DPRef))
|
||||
if opts.mode == 'interactive':
|
||||
ch = DbgMuxConnInteractiveTerminal()
|
||||
self.peer.disp.register(ch)
|
||||
ch.establish(opts.DPRef)
|
||||
ch.attach()
|
||||
elif opts.mode == 'udp-bridge':
|
||||
ch = DbgMuxConnUdpBridge()
|
||||
self.peer.disp.register(ch)
|
||||
ch.establish(opts.DPRef)
|
||||
|
||||
f = self.peer.recv()
|
||||
assert f['MsgType'] == DbgMuxFrame.MsgType.ConnEstablished
|
||||
if f['Msg']['ConnRef'] == 0xffff:
|
||||
log.warning("Connection failed: unknown DPRef=0x%04x?", opts.DPRef)
|
||||
self.peer.send(DbgMuxFrame.MsgType.Ack)
|
||||
return
|
||||
terminate_parser = cmd2.Cmd2ArgumentParser()
|
||||
terminate_parser.add_argument('ConnRef',
|
||||
type=lambda v: int(v, 16),
|
||||
help='ConnRef in hex')
|
||||
|
||||
log.info("Connection established (ConnRef=0x%04x)",
|
||||
f['Msg']['ConnRef'])
|
||||
|
||||
# Read the messages
|
||||
while True:
|
||||
f = self.peer.recv()
|
||||
|
||||
if f['MsgType'] != DbgMuxFrame.MsgType.ConnData:
|
||||
log.warning('Unexpected frame: %s', f)
|
||||
self.peer.send(DbgMuxFrame.MsgType.Ack)
|
||||
continue
|
||||
try: # FIXME: there can be binary data
|
||||
self.stdout.write(f['Msg']['Data'].decode())
|
||||
except: # ... ignore it for now
|
||||
continue
|
||||
|
||||
# ACKnowledge reception of a frame
|
||||
self.peer.send(DbgMuxFrame.MsgType.Ack)
|
||||
@cmd2.with_argparser(terminate_parser)
|
||||
@cmd2.with_category(CATEGORY_DBGMUX)
|
||||
def do_terminate(self, opts) -> None:
|
||||
''' Terminate connection with a Data Provider '''
|
||||
msg = dict(ConnRef=opts.ConnRef)
|
||||
self.peer.send(DbgMuxFrame.MsgType.ConnTerminate, msg)
|
||||
|
||||
|
||||
ap = argparse.ArgumentParser(prog='sedbgmux', description=SEDbgMuxApp.DESC,
|
||||
|
|
Loading…
Reference in New Issue