mirror of https://github.com/evilhero/mylar
112 lines
3.3 KiB
Python
112 lines
3.3 KiB
Python
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import logging
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import socket
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import ssl
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import struct
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import zlib
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from .rencode import dumps, loads
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RPC_RESPONSE = 1
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RPC_ERROR = 2
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RPC_EVENT = 3
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#MESSAGE_HEADER_SIZE = 5
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READ_SIZE = 10
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logger = logging.getLogger(__name__)
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class ConnectionLostException(Exception):
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pass
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class CallTimeoutException(Exception):
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pass
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class DelugeRPCClient(object):
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timeout = 20
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def __init__(self, host, port, username, password):
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self.host = host
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self.port = port
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self.username = username
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self.password = password
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self.request_id = 1
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self.connected = False
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self._create_socket()
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def _create_socket(self, ssl_version=None):
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if ssl_version is not None:
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self._socket = ssl.wrap_socket(socket.socket(socket.AF_INET, socket.SOCK_STREAM), ssl_version=ssl_version)
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else:
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self._socket = ssl.wrap_socket(socket.socket(socket.AF_INET, socket.SOCK_STREAM))
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self._socket.settimeout(self.timeout)
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def connect(self):
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"""
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Connects to the Deluge instance
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"""
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logger.info('Connecting to %s:%s' % (self.host, self.port))
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try:
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self._socket.connect((self.host, self.port))
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except ssl.SSLError as e:
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if e.reason != 'UNSUPPORTED_PROTOCOL' or not hasattr(ssl, 'PROTOCOL_SSLv3'):
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raise
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logger.warning('Was unable to ssl handshake, trying to force SSLv3 (insecure)')
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self._create_socket(ssl_version=ssl.PROTOCOL_SSLv3)
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self._socket.connect((self.host, self.port))
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logger.debug('Connected to Deluge, logging in')
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result = self.call('daemon.login', self.username, self.password)
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logger.debug('Logged in with value %r' % result)
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self.connected = True
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def disconnect(self):
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"""
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Disconnect from deluge
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"""
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if self.connected:
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self._socket.close()
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def call(self, method, *args, **kwargs):
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"""
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Calls an RPC function
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"""
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self.request_id += 1
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logger.debug('Calling reqid %s method %r with args:%r kwargs:%r' % (self.request_id, method, args, kwargs))
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req = ((self.request_id, method, args, kwargs), )
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req = zlib.compress(dumps(req))
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#self._socket.send('D' + struct.pack("!i", len(req))) # seems to be for the future !
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self._socket.send(req)
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data = b''
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while True:
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try:
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d = self._socket.recv(READ_SIZE)
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except ssl.SSLError:
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raise CallTimeoutException()
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data += d
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try:
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data = zlib.decompress(data)
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except zlib.error:
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if not d:
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raise ConnectionLostException()
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continue
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break
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data = list(loads(data))
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msg_type = data.pop(0)
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request_id = data.pop(0)
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if msg_type == RPC_ERROR:
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exception_type, exception_msg, traceback = data[0]
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exception = type(str(exception_type), (Exception, ), {})
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exception_msg = '%s\n\n%s' % (exception_msg, traceback)
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raise exception(exception_msg)
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elif msg_type == RPC_RESPONSE:
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retval = data[0]
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return retval
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