mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-11-15 20:19:23 +00:00
111 lines
3.5 KiB
Python
111 lines
3.5 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/>.
|
|
|
|
from __future__ import absolute_import
|
|
|
|
import os
|
|
import time
|
|
|
|
from .protocol_v1 import ProtocolV1
|
|
from .transport import Transport, TransportException
|
|
|
|
|
|
class PipeTransport(Transport):
|
|
'''
|
|
PipeTransport implements fake wire transport over local named pipe.
|
|
Use this transport for talking with trezor-emu.
|
|
'''
|
|
|
|
def __init__(self, device=None, is_device=False):
|
|
super(PipeTransport, self).__init__()
|
|
|
|
if not device:
|
|
device = '/tmp/pipe.trezor'
|
|
self.device = device
|
|
self.is_device = is_device
|
|
self.filename_read = None
|
|
self.filename_write = None
|
|
self.read_f = None
|
|
self.write_f = None
|
|
self.protocol = ProtocolV1()
|
|
|
|
def __str__(self):
|
|
return self.device
|
|
|
|
@staticmethod
|
|
def enumerate():
|
|
raise NotImplementedError('This transport cannot enumerate devices')
|
|
|
|
@staticmethod
|
|
def find_by_path(path=None):
|
|
return PipeTransport(path)
|
|
|
|
def open(self):
|
|
if self.is_device:
|
|
self.filename_read = self.device + '.to'
|
|
self.filename_write = self.device + '.from'
|
|
os.mkfifo(self.filename_read, 0o600)
|
|
os.mkfifo(self.filename_write, 0o600)
|
|
else:
|
|
self.filename_read = self.device + '.from'
|
|
self.filename_write = self.device + '.to'
|
|
if not os.path.exists(self.filename_write):
|
|
raise TransportException('Not connected')
|
|
|
|
self.read_f = os.open(self.filename_read, 'rb', 0)
|
|
self.write_f = os.open(self.filename_write, 'w+b', 0)
|
|
|
|
self.protocol.session_begin(self)
|
|
|
|
def close(self):
|
|
self.protocol.session_end(self)
|
|
if self.read_f:
|
|
self.read_f.close()
|
|
self.read_f = None
|
|
if self.write_f:
|
|
self.write_f.close()
|
|
self.write_f = None
|
|
if self.is_device:
|
|
os.unlink(self.filename_read)
|
|
os.unlink(self.filename_write)
|
|
self.filename_read = None
|
|
self.filename_write = None
|
|
|
|
def read(self):
|
|
return self.protocol.read(self)
|
|
|
|
def write(self, msg):
|
|
return self.protocol.write(self, msg)
|
|
|
|
def write_chunk(self, chunk):
|
|
if len(chunk) != 64:
|
|
raise TransportException('Unexpected chunk size: %d' % len(chunk))
|
|
self.write_f.write(chunk)
|
|
self.write_f.flush()
|
|
|
|
def read_chunk(self):
|
|
while True:
|
|
chunk = self.read_f.read(64)
|
|
if chunk:
|
|
break
|
|
else:
|
|
time.sleep(0.001)
|
|
if len(chunk) != 64:
|
|
raise TransportException('Unexpected chunk size: %d' % len(chunk))
|
|
return bytearray(chunk)
|