--- origbot.py  2011-04-13 13:51:36.899100660 +0300
+++ ircLogBot.py        2011-04-13 13:51:21.471103672 +0300
@@ -57,6 +57,10 @@

     def connectionMade(self):
         irc.IRCClient.connectionMade(self)
+
+        # users logged in
+        self.sessions = []
+
         self.logger = MessageLogger(open(self.factory.filename, "a"))
         self.logger.log("[connected at %s]" %
                         time.asctime(time.localtime(time.time())))
@@ -78,20 +82,50 @@
         """This will get called when the bot joins the channel."""
         self.logger.log("[I have joined %s]" % channel)

+    def checkLogin(self, user, password):
+        if user != 'desaster' or password != 'internet':
+            return False
+        return True
+
+    def loginUser(self, user):
+        """Mark user as logged in"""
+        if user not in self.sessions:
+            self.sessions.append(user)
+
+    def logoffUser(self, user):
+        if user in self.sessions:
+            self.sessions.remove(user)
+
+    def isLoggedIn(self, user):
+        return user in self.sessions
+
     def privmsg(self, user, channel, msg):
         """This will get called when the bot receives a message."""
-        user = user.split('!', 1)[0]
+        nick = user.split('!', 1)[0]
         self.logger.log("<%s> %s" % (user, msg))

         # Check to see if they're sending me a private message
         if channel == self.nickname:
-            msg = "It isn't nice to whisper!  Play nice with the group."
-            self.msg(user, msg)
-            return
+            pieces = msg.split()
+            if len(pieces) == 2 and pieces[0] == 'login':
+                password = pieces[1]
+                if self.checkLogin(nick, password):
+                    self.loginUser(user)
+                    self.msg(user, 'Welcome, %s' % user)
+                else:
+                    self.msg(user, 'Login failed!')
+            else:
+                msg = "It isn't nice to whisper!  Play nice with the group."
+                self.msg(nick, msg)
+                return

         # Otherwise check to see if it is a message directed at me
+        print self.sessions
         if msg.startswith(self.nickname + ":"):
-            msg = "%s: I am a log bot" % user
+            if self.isLoggedIn(user):
+                msg = "%s: Hello, sir." % nick
+            else:
+                msg = "%s: I don't know you." % nick
             self.msg(channel, msg)
             self.logger.log("<%s> %s" % (self.nickname, msg))