242 lines
8.2 KiB
Python
242 lines
8.2 KiB
Python
# -*- coding: utf-8 -*-
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# Nemubot is a modulable IRC bot, built around XML configuration files.
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# Copyright (C) 2012 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 imp
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import os
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import re
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import socket
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import sys
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import time
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import threading
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import traceback
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import message
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import server
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#Store all used ports
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PORTS = list()
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class DCC(server.Server):
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def __init__(self, srv, dest, socket=None):
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server.Server.__init__(self)
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self.error = False # An error has occur, closing the connection?
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self.messages = list() # Message queued before connexion
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# Informations about the sender
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self.sender = dest
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if self.sender is not None:
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self.nick = (self.sender.split('!'))[0]
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if self.nick != self.sender:
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self.realname = (self.sender.split('!'))[1]
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else:
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self.realname = self.nick
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# Keep the server
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self.srv = srv
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self.treatement = self.treat_msg
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# Found a port for the connection
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self.port = self.foundPort()
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if self.port is None:
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self.logger.critical("No more available slot for DCC connection")
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self.setError("Il n'y a plus de place disponible sur le serveur"
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" pour initialiser une session DCC.")
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def foundPort(self):
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"""Found a free port for the connection"""
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for p in range(65432, 65535):
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if p not in PORTS:
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PORTS.append(p)
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return p
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return None
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@property
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def id(self):
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"""Gives the server identifiant"""
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return self.srv.id + "/" + self.sender
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def setError(self, msg):
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self.error = True
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self.srv.send_msg_usr(self.sender, msg)
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def accept_user(self, host, port):
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"""Accept a DCC connection"""
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self.s = socket.socket()
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try:
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self.s.connect((host, port))
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self.logger.info("Accepted user from %s:%d for %s" % (host, port, self.sender))
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self.connected = True
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self.stop = False
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except:
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self.connected = False
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self.error = True
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return False
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self.start()
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return True
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def request_user(self, type="CHAT", filename="CHAT", size=""):
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"""Create a DCC connection"""
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#Open the port
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s = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
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try:
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s.bind(('', self.port))
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except:
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try:
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self.port = self.foundPort()
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s.bind(('', self.port))
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except:
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self.setError("Une erreur s'est produite durant la tentative"
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" d'ouverture d'une session DCC.")
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return False
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self.logger.info("Listening on %d for %s" % (self.port, self.sender))
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#Send CTCP request for DCC
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self.srv.send_ctcp(self.sender,
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"DCC %s %s %d %d %s" % (type, filename, self.srv.ip,
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self.port, size),
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"PRIVMSG")
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s.listen(1)
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#Waiting for the client
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(self.s, addr) = s.accept()
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self.logger.info("Connected by %d" % addr)
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self.connected = True
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return True
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def send_dcc_raw(self, line):
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self.s.sendall(line + b'\n')
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def send_dcc(self, msg, to = None):
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"""If we talk to this user, send a message through this connection
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else, send the message to the server class"""
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if to is None or to == self.sender or to == self.nick:
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if self.error:
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self.srv.send_msg_final(self.nick, msg)
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elif not self.connected or self.s is None:
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try:
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self.start()
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except RuntimeError:
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pass
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self.messages.append(msg)
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else:
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for line in msg.split("\n"):
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self.send_dcc_raw(line.encode())
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else:
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self.srv.send_dcc(msg, to)
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def send_file(self, filename):
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"""Send a file over DCC"""
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if os.path.isfile(filename):
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self.messages = filename
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try:
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self.start()
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except RuntimeError:
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pass
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else:
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self.logger.error("File not found `%s'" % filename)
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def run(self):
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self.stopping.clear()
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# Send file connection
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if not isinstance(self.messages, list):
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self.request_user("SEND",
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os.path.basename(self.messages),
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os.path.getsize(self.messages))
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if self.connected:
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with open(self.messages, 'rb') as f:
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d = f.read(268435456) #Packets size: 256Mo
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while d:
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self.s.sendall(d)
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self.s.recv(4) #The client send a confirmation after each packet
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d = f.read(268435456) #Packets size: 256Mo
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# Messages connection
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else:
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if not self.connected:
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if not self.request_user():
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#TODO: do something here
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return False
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#Start by sending all queued messages
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for mess in self.messages:
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self.send_dcc(mess)
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time.sleep(1)
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readbuffer = b''
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self.nicksize = len(self.srv.nick)
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self.Bnick = self.srv.nick.encode()
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while not self.stop:
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raw = self.s.recv(1024) #recieve server messages
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if not raw:
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break
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readbuffer = readbuffer + raw
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temp = readbuffer.split(b'\n')
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readbuffer = temp.pop()
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for line in temp:
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self.treatement(line)
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if self.connected:
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self.s.close()
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self.connected = False
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#Remove from DCC connections server list
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if self.realname in self.srv.dcc_clients:
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del self.srv.dcc_clients[self.realname]
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self.logger.info("Closing connection with " + self.nick)
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self.stopping.set()
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if self.closing_event is not None:
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self.closing_event()
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#Rearm Thread
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threading.Thread.__init__(self)
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def treat_msg(self, line):
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"""Treat a receive message, *can be overwritten*"""
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if line == b'NEMUBOT###':
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bot = self.srv.add_networkbot(self.srv, self.sender, self)
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self.treatement = bot.treat_msg
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self.send_dcc("NEMUBOT###")
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elif (line[:self.nicksize] == self.Bnick and
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line[self.nicksize+1:].strip()[:10] == b'my name is'):
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name = line[self.nicksize+1:].strip()[11:].decode('utf-8',
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'replace')
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if re.match("^[a-zA-Z0-9_-]+$", name):
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if name not in self.srv.dcc_clients:
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del self.srv.dcc_clients[self.sender]
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self.nick = name
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self.sender = self.nick + "!" + self.realname
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self.srv.dcc_clients[self.realname] = self
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self.send_dcc("Hi " + self.nick)
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else:
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self.send_dcc("This nickname is already in use"
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", please choose another one.")
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else:
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self.send_dcc("The name you entered contain"
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" invalid char.")
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else:
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self.srv.treat_msg(
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(":%s PRIVMSG %s :" % (
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self.sender,self.srv.nick)).encode() + line,
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True)
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