213 lines
5.6 KiB
Python
213 lines
5.6 KiB
Python
# -*- coding: utf-8 -*-
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# Nemubot is a smart and modulable IM bot.
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# Copyright (C) 2012-2015 Mercier Pierre-Olivier
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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 Affero 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,
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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 Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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import nemubot.message as message
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from nemubot.message.printer.socket import Socket as SocketPrinter
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from nemubot.server.abstract import AbstractServer
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class SocketServer(AbstractServer):
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"""Concrete implementation of a socket connexion (can be wrapped with TLS)"""
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def __init__(self, sock_location=None, host=None, port=None, ssl=False, socket=None, id=None):
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if id is not None:
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self.id = id
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AbstractServer.__init__(self)
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if sock_location is not None:
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self.filename = sock_location
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elif host is not None:
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self.host = host
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self.port = int(port)
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self.ssl = ssl
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self.socket = socket
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self.readbuffer = b''
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self.printer = SocketPrinter
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def fileno(self):
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return self.socket.fileno() if self.socket else None
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@property
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def connected(self):
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"""Indicator of the connection aliveness"""
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return self.socket is not None
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# Open/close
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def _open(self):
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import os
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import socket
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if self.connected:
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return True
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try:
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if hasattr(self, "filename"):
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self.socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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self.socket.connect(self.filename)
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self.logger.info("Connected to %s", self.filename)
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else:
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self.socket = socket.create_connection((self.host, self.port))
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self.logger.info("Connected to %s:%d", self.host, self.port)
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except socket.error as e:
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self.socket = None
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self.logger.critical("Unable to connect to %s:%d: %s",
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self.host, self.port,
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os.strerror(e.errno))
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return False
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# Wrap the socket for SSL
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if self.ssl:
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import ssl
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ctx = ssl.SSLContext(ssl.PROTOCOL_TLSv1)
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self.socket = ctx.wrap_socket(self.socket)
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return True
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def _close(self):
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import socket
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from nemubot.server import _lock
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_lock.release()
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self._sending_queue.join()
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_lock.acquire()
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if self.connected:
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try:
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self.socket.shutdown(socket.SHUT_RDWR)
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self.socket.close()
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except socket.error:
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pass
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self.socket = None
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return True
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# Write
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def _write(self, cnt):
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if not self.connected:
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return
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self.socket.send(cnt)
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def format(self, txt):
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if isinstance(txt, bytes):
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return txt + b'\r\n'
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else:
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return txt.encode() + b'\r\n'
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# Read
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def read(self):
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if not self.connected:
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return []
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raw = self.socket.recv(1024)
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temp = (self.readbuffer + raw).split(b'\r\n')
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self.readbuffer = temp.pop()
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for line in temp:
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yield line
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def parse(self, line):
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import shlex
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line = line.strip().decode()
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try:
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args = shlex.split(line)
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except ValueError:
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args = line.split(' ')
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yield message.Command(cmd=args[0], args=args[1:], server=self)
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class SocketListener(AbstractServer):
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def __init__(self, new_server_cb, id, sock_location=None, host=None, port=None, ssl=None):
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self.id = id
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AbstractServer.__init__(self)
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self.new_server_cb = new_server_cb
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self.sock_location = sock_location
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self.host = host
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self.port = port
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self.ssl = ssl
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self.nb_son = 0
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def fileno(self):
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return self.socket.fileno() if self.socket else None
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@property
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def connected(self):
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"""Indicator of the connection aliveness"""
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return self.socket is not None
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def _open(self):
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import os
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import socket
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self.socket = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
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if self.sock_location is not None:
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try:
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os.remove(self.sock_location)
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except FileNotFoundError:
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pass
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self.socket.bind(self.sock_location)
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elif self.host is not None and self.port is not None:
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self.socket.bind((self.host, self.port))
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self.socket.listen(5)
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return True
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def _close(self):
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import os
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import socket
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try:
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self.socket.shutdown(socket.SHUT_RDWR)
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self.socket.close()
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if self.sock_location is not None:
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os.remove(self.sock_location)
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except socket.error:
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pass
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# Read
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def read(self):
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if not self.connected:
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return []
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conn, addr = self.socket.accept()
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self.nb_son += 1
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ss = SocketServer(id=self.id + "#" + str(self.nb_son), socket=conn)
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self.new_server_cb(ss)
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return []
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