mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-27 01:48:17 +00:00
82 lines
2.5 KiB
Python
82 lines
2.5 KiB
Python
# This file is part of the TREZOR project.
|
|
#
|
|
# Copyright (C) 2012-2016 Marek Palatinus <slush@satoshilabs.com>
|
|
# Copyright (C) 2012-2016 Pavol Rusnak <stick@satoshilabs.com>
|
|
#
|
|
# This library is free software: you can redistribute it and/or modify
|
|
# it under the terms of the GNU Lesser General Public License as published by
|
|
# the Free Software Foundation, either version 3 of the License, or
|
|
# (at your option) any later version.
|
|
#
|
|
# This library is distributed in the hope that it will be useful,
|
|
# but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
# GNU Lesser General Public License for more details.
|
|
#
|
|
# You should have received a copy of the GNU Lesser General Public License
|
|
# along with this library. If not, see <http://www.gnu.org/licenses/>.
|
|
|
|
'''UDP Socket implementation of Transport.'''
|
|
|
|
import socket
|
|
from select import select
|
|
from .transport import TransportV2
|
|
|
|
|
|
class UdpTransport(TransportV2):
|
|
|
|
def __init__(self, device, *args, **kwargs):
|
|
if device is None:
|
|
device = ''
|
|
device = device.split(':')
|
|
if len(device) < 2:
|
|
if not device[0]:
|
|
# Default port used by trezor v2
|
|
device = ('127.0.0.1', 21324)
|
|
else:
|
|
device = ('127.0.0.1', int(device[0]))
|
|
else:
|
|
device = (device[0], int(device[1]))
|
|
|
|
self.socket = None
|
|
super(UdpTransport, self).__init__(device, *args, **kwargs)
|
|
|
|
@classmethod
|
|
def enumerate(cls):
|
|
raise Exception('This transport cannot enumerate devices')
|
|
|
|
@classmethod
|
|
def find_by_path(cls, path=None):
|
|
return cls(path)
|
|
|
|
def _open(self):
|
|
self.socket = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
|
|
self.socket.connect(self.device)
|
|
self.socket.settimeout(10)
|
|
|
|
def _close(self):
|
|
self.socket.close()
|
|
self.socket = None
|
|
|
|
def _ready_to_read(self):
|
|
rlist, _, _ = select([self.socket], [], [], 0)
|
|
return len(rlist) > 0
|
|
|
|
def _write_chunk(self, chunk):
|
|
if len(chunk) != 64:
|
|
raise Exception("Unexpected data length")
|
|
|
|
self.socket.sendall(chunk)
|
|
|
|
def _read_chunk(self):
|
|
while True:
|
|
try:
|
|
data = self.socket.recv(64)
|
|
break
|
|
except socket.timeout:
|
|
continue
|
|
if len(data) != 64:
|
|
raise Exception("Unexpected chunk size: %d" % len(data))
|
|
|
|
return bytearray(data)
|