71 lines
2.2 KiB
Python
71 lines
2.2 KiB
Python
# This file is part of the TREZOR project.
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#
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# Copyright (C) 2012-2016 Marek Palatinus <slush@satoshilabs.com>
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# Copyright (C) 2012-2016 Pavol Rusnak <stick@satoshilabs.com>
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#
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# This library is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Lesser 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 library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public License
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# along with this library. If not, see <http://www.gnu.org/licenses/>.
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'''UDP Socket implementation of Device'''
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import socket
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class UdpDevice(object):
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def __init__(self, path):
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super(UdpDevice, self).__init__(path)
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self.sock = None
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@staticmethod
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def enumerate():
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devices = []
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DEFAULT = ('127.0.0.1', 21324) # default host and port
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for path in [DEFAULT]:
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try:
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sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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sock.connect(path)
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sock.settimeout(10)
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sock.sendall(b'PINGPING')
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data = sock.recv(8)
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if data == b'PONGPONG':
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devices.append(path)
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sock.close()
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except:
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pass
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return devices
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def open(self):
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self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
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self.sock.connect(self.path)
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self.sock.settimeout(10)
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def close(self):
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self.sock.close()
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self.sock = None
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def write_chunk(self, chunk):
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if len(chunk) != 64:
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raise Exception('Unexpected data length')
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self.sock.sendall(chunk)
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def read_chunk(self):
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while True:
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try:
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data = self.sock.recv(64)
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break
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except socket.timeout:
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continue
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if len(data) != 64:
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raise Exception('Unexpected chunk size: %d' % len(data))
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return bytearray(data)
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