def connect(self):
""" Attempt to connect to a given server"""
try:
logging.info("Attempting to start client.")
self.__server = sockmod.socket(sockmod.AF_INET, sockmod.SOCK_STREAM)
self.__server.connect((self.getHost(), self.getPort()))
self.__server = SocketBuffer(self.__server)
logging.info("Client Connected to server.")
return True
except sockmod.error as e:
if e.errno == 111:
logging.critical(
"Can't connect to {host}:{port}. Is the server running?".format(
host=self.getHost(),
port=self.getPort()
)
)
return False
else:
raise e
class IRCClient(IRC.Handler.IRCHandler):
""" The IRC Client
Takes the base IRCHandler and uses it to produce
a fully formed Client for the IRC protocol.
"""
def __init__(self, host, port, userinput=sys.stdin, autoQuit=False):
""" Initialize Client"""
self.__nick = "NEWUSER"
super(IRCClient, self).__init__(self.__nick, host, port)
self.__cmdProc = CommandProcessor()
self.__server = None
self.__noneChannel = self.__currentChannel = ClientChannel("None")
self.__input = userinput
self.__gui = ClientConsole(self)
self.__tempNames = []
self.__tempChannels = []
self.__autoQuit = autoQuit
self.__allUsers = {}
self.__allChannels = {self.__noneChannel.getName(): self.__noneChannel}
self.__noneChannel.addUser(self.findOrCreateUser(self.__nick))
def getNoneChannel(self):
return self.__noneChannel
def connect(self):
""" Attempt to connect to a given server"""
try:
logging.info("Attempting to start client.")
self.__server = sockmod.socket(sockmod.AF_INET, sockmod.SOCK_STREAM)
self.__server.connect((self.getHost(), self.getPort()))
self.__server = SocketBuffer(self.__server)
logging.info("Client Connected to server.")
return True
except sockmod.error as e:
if e.errno == 111:
logging.critical(
"Can't connect to {host}:{port}. Is the server running?".format(
host=self.getHost(),
port=self.getPort()
)
)
return False
else:
raise e
def getNick(self):
""" Get's the client nickname"""
return self.__nick
def getJoined(self):
""" Return list of joined rooms """
return [
c
for c in self.__allChannels.values()
if c.userInChannel(self.findOrCreateUser(self.__nick))
]
def getChats(self):
""" Return a dictionary of chat messages for rooms"""
return self.__chats
def isGUI(self):
""" Returns if GUI enabled """
return self.__gui.isGUI()
def updateChat(self, msg, channels=None):
""" Update the corresponding chat messages
Keeps a record of the chat messages in a given channel
so that the user can read the transcripts
"""
if channels == None:
self.currentChannel().addHistory(msg)
else:
for c in channels:
c.addHistory(msg)
if not self.__gui.isGUI():
print msg
else:
self.__gui.updateChat()
def guirun(self, screen):
""" Runs the client in a GUI mode """
(height, width) = screen.getmaxyx()
if height < 10 or width < 50:
logging.warning("Screen size too small")
self.stop()
else:
self.__gui = ClientGUI(self, screen)
self.__gui.update()
self.run(shutdown=False)
def setInput(self, newinput):
""" Sets the input stream for the client"""
self.__input = newinput
def getUserInput(self):
""" Reads from the current input stream a new line"""
return self.__input.readline()
def getChannels(self):
""" Gets the known available channels"""
return self.__allChannels.values()
def currentChannel(self):
""" Returns users current channel"""
return self.__currentChannel
def setChannel(self, chan):
""" Sets the current channel"""
self.__currentChannel = chan
self.__gui.update()
def getInputSocketList(self):
""" Returns the list of input sockets to listen"""
return [self.__input, self.__server]
def getOutputSocketList(self):
"""Returns a list of sockets ready to send messages"""
return filter(lambda s: s.readyToSend(), [self.__server])
def serverSocket(self):
""" Returns the current server socket"""
return self.__server
def inputCmd(self, line):
""" Attempts to execute a given user input line"""
try:
cmd = self.__cmdProc.processCmd(line)
if cmd:
cmd.execute(self)
except CommandParseError as e:
self.notify("Error Encountered Parsing Command: %s" % (e))
def socketInputReady(self, socket):
""" Determine what to do with a given socket input"""
if socket == self.__input:
line = self.__gui.keypress()
if line and len(line) > 0:
self.inputCmd(line)
else:
self.receiveMsg(socket)
def socketExceptReady(self, socket):
""" Notify client of socket exception"""
pass #does the client care?
def connectionDrop(self, socket):
""" Server Disconnect, shutdown client. """
if socket == self.__server:
self.notify("*** Server Disconnect ***")
if self.__autoQuit and socket == self.__server:
self.stop()
def notify(self, msg):
""" Notify the GUI that there is a new message """
self.updateChat(msg)
def findOrCreateUser(self, name):
""" Find or create a user reference """
if name in self.__allUsers:
return self.__allUsers[name]
else:
newuser = ClientUser(name)
self.__allUsers[name] = newuser
return newuser
def findChannel(self, name):
""" Find a a channel with the possibility of failure """
if name in self.__allChannels:
return self.__allChannels[name]
else:
return None
def findOrCreateChannel(self, name):
""" Find and potentially create channel """
if self.findChannel(name):
return self.findChannel(name)
else:
newchannel = ClientChannel(name)
self.__allChannels[name] = newchannel
return newchannel
def allChannelsWithName(self, name):
""" Return a list of all channels with a user in them """
chans = []
user = self.findOrCreateUser(name)
for c in self.__allChannels.values():
if c.userInChannel(user):
chans.append(c)
return chans
def receivedNick(self, socket, src, newnick):
""" Received a nickname.
If it's for the client, update the nickname.
Otherwise update the nickname of the specified clients
"""
notify = self.allChannelsWithName(src)
user = self.findOrCreateUser(src)
user.updateName(newnick)
self.__allUsers[newnick] = user
del self.__allUsers[src]
if self.__nick == src:
self.__nick = newnick
self._ircmsg.updateSrc(newnick)
self.updateChat(
"*** You ({oldnick}) are now {newnick} ****".format(
oldnick=src,
newnick=newnick
),
notify
)
else:
self.updateChat(
"*** {oldnick} is now {newnick} ****".format(
oldnick=src,
newnick=newnick
),
notify
)
self.__gui.update()
def receivedQuit(self, socket, src, msg):
""" Received a quit command
If it's for the client, shutdown.
If it's for another client, remove them from chats.
"""
user = self.findOrCreateUser(src)
if src == "SERVER":
notify = self.__allChannels.values()
else:
notify = self.allChannelsWithName(src)
for c in notify:
c.removeUser(user)
if src in self.__allUsers:
del self.__allUsers[src]
self.updateChat(
"*** {src} quit ({msg})".format(
src=src,
msg=msg
),
notify
)
self.__gui.updateUsers()
if src == self.__nick:
self.stop()
def receivedSQuit(self, socket, msg):
""" Unused server command """
pass
def receivedJoin(self, socket, src, channels):
""" Received join
If the join is for the user, add them to the channel.
If it's for another user, store them in the channel.
"""
user = self.findOrCreateUser(src)
notify_chan = []
for c in channels:
chan = self.findOrCreateChannel(c)
chan.addUser(user)
notify_chan.append(chan)
if src == self.__nick:
self.updateChat(
"*** You joined the channel(s) {channels}".format(
channels=",".join(channels)
), notify_chan + [self.__noneChannel]
)
else:
self.updateChat(
"*** {src} joined the channel".format(src=src),
notify_chan
)
self.__gui.update()
def receivedLeave(self, socket, src, channels, msg):
""" Received Leave
If it's for the user, remove from specified channels.
If it's for someone else, remove them from channels.
"""
user = self.findOrCreateUser(src)
notify_chan = []
for c in channels:
chan = self.findOrCreateChannel(c)
if chan.userInChannel(user):
chan.removeUser(user)
notify_chan.append(chan)
if src == self.__nick and self.__currentChannel in notify_chan:
self.__currentChannel = self.__noneChannel
self.updateChat(
"*** {src} left the channel(s) {chans} ({msg})".format(
src=src,
msg=msg,
chans=", ".join([c.getName() for c in notify_chan])
),
[self.__noneChannel] + notify_chan
)
self.__gui.update()
@clientIgnore
def receivedChannels(self, socket):
""" Client does not receive channels messages"""
pass
@clientIgnore
def receivedUsers(self, socket, channels, client_req):
""" Client does not receive users requests"""
pass
def filterChannels(self, c):
return re.match("^#", c) != None
def receivedMsg(self, socket, src, targets, msg):
""" Update the chats with the new message depending on target"""
channels = filter(lambda t: self.filterChannels(t), targets)
channels = map(lambda c: self.findOrCreateChannel(c), channels)
if self.__nick in targets:
self.notify("*** {src}: {msg}".format(src=src, msg=msg))
elif len(channels) > 0:
self.updateChat("{src}: {msg}".format(src=src, msg=msg), channels)
def receivedPing(self, socket, msg):
""" Reply to ping with pong """
self.sendMsg(socket, self._ircmsg.cmdPong(msg))
@clientIgnore
def receivedPong(self, socket, msg):
""" Client does not recieve pongs"""
pass
def receivedNames(self, socket, channel, names, client):
""" Receive the names list
If the user is in GUI mode, update the users window.
Otherwise print out the user information
"""
if self.__gui.isGUI() and not client:
self.__tempNames.extend(names)
if len(names) == 0:
c = self.findOrCreateChannel(channel)
newusers = []
for n in self.__tempNames:
newusers.append(self.findOrCreateUser(n))
c.receivedNames(newusers)
self.__tempNames = []
self.__gui.update()
elif len(names) > 0:
self.notify(
"{chan}: {users}".format(
chan=channel,
users=" ".join(names)
)
)
def receivedChannelsReply(self, socket, channels):
""" Receive the channels list
If the user is in gui mode update the channels window.
Otherwise print out the channels list.
"""
if self.__gui.isGUI():
self.__tempChannels.extend(channels)
if channels == []:
new_set = set(self.__tempChannels)
old_set = set(self.__allChannels.keys())
remove = old_set - new_set
add = new_set - old_set
for d in remove:
del self.__allChannels[d]
for a in add:
self.findOrCreateChannel(a)
self.__gui.update()
elif len(channels) > 0:
self.notify("CHANNELS: {chans}".format(chans=" ".join(channels)))
def receivedError(self, socket, error_name, error_msg):
""" Notify user of error"""
self.notify(
"ERROR: {error_t}: {error_m}".format(
error_t=error_name,
error_m=error_msg
)
)
def receivedInvalid(self, socket, msg):
""" Notify user of invalid server message"""
self.notify("BAD SERVER MSG: {msg}".format(msg=msg))
def receivedSignal(self, sig, frame):
""" Handle signal gradefully """
if sig == signal.SIGINT:
msg = "Client interrupted with Ctrl-C."
logging.info(msg)
self.notify(msg)
self.stop()
def sentInvalid(self, socket, msg):
""" Notify user that invalid message was sent"""
self.notify("CLIENT ERROR: {msg}".format(msg=msg))
def shutdown(self):
""" Shutdown client"""
self.notify("*** Shutting Down Client ***")
self.__server.close()
