import socket import PacketListenerManager import urllib2 import traceback import threading import hashlib import string import Utils import sys from networking import PacketSenderManager from Crypto.Random import _UserFriendlyRNG from Crypto.Util import asn1 from Crypto.PublicKey import RSA from Crypto.Cipher import AES from Crypto.Cipher import PKCS1_v1_5 EntityID = 0 class ServerConnection(threading.Thread): def __init__(self, window, username, password, sessionID, server, port, options=None): threading.Thread.__init__(self) self.options = options self.isConnected = False self.username = username self.password = password self.sessionID = sessionID self.server = server self.port = port if(window == None): self.NoGUI = True else: self.NoGUI = False self.window = window def disconnect(self, reason="Disconnected by user"): PacketSenderManager.sendFF(self.socket, reason) self.listener.kill = True self.socket.close() def setWindow(self, window): self.window = window def grabSocket(self): return self.socket def run(self): try: #Create the socket and fileobject self.socket = socket.socket ( socket.AF_INET, socket.SOCK_STREAM ) self.socket.connect ( ( self.server, self.port ) ) self.FileObject = self.socket.makefile() #Send out the handshake packet PacketSenderManager.sendHandshake(self.socket, self.username, self.server, self.port) #Receive the encryption packet id packetid = self.socket.recv(1) #Sanity check the packet id assert packetid == "\xFD", "Server didn't respond back to handshake with proper packet!" #Parse the packet packetFD = PacketListenerManager.handleFD(self.FileObject) #Import the server's public key self.pubkey = RSA.importKey(packetFD['Public Key']) #Generate a 16 byte (128 bit) shared secret self.sharedSecret = _UserFriendlyRNG.get_random_bytes(16) #Grab the server id sha1 = hashlib.sha1() sha1.update(packetFD['ServerID']) sha1.update(self.sharedSecret) sha1.update(packetFD['Public Key']) #lovely java style hex digest by barneygale serverid = Utils.javaHexDigest(sha1) #Authenticate the server from sessions.minecraft.net if(serverid != '-'): try: #Open up the url with the appropriate get parameters url = "http://session.minecraft.net/game/joinserver.jsp?user=" + self.username + "&sessionId=" + self.sessionID + "&serverId=" + serverid response = urllib2.urlopen(url).read() if(response != "OK"): #handle gui errors if(self.NoGUI == False): self.window.ConnectPanel.Status.SetFont(wx.Font(15, wx.MODERN, wx.NORMAL, wx.NORMAL, 0, "Minecraft")) self.window.ConnectPanel.Status.SetLabel("Response from sessions.minecraft.net wasn't OK") else: print "Response from sessions.minecraft.net wasn't OK, it was " + response return False #Success \o/ We can now begin sending our stuff to the server #Instantiate our main packet listener self.listener = PacketListener(self, self.window, self.socket, self.FileObject) self.listener.start() #Encrypt the verification token from earlier along with our shared secret with the server's rsa key self.RSACipher = PKCS1_v1_5.new(self.pubkey) encryptedSanityToken = self.RSACipher.encrypt(str(packetFD['Token'])) encryptedSharedSecret = self.RSACipher.encrypt(str(self.sharedSecret)) #Send out a a packet FC to the server PacketSenderManager.sendFC(self.socket, encryptedSharedSecret, encryptedSanityToken) except Exception, e: traceback.print_exc() else: print "Server is in offline mode" #TODO: handle offline mod servers except Exception, e: print "Connection to server failed" traceback.print_exc() sys.exit(1) return False class EncryptedFileObjectHandler(): def __init__(self, fileobject, cipher): self.fileobject = fileobject self.cipher = cipher self.length = 0 def read(self, length): rawData = self.fileobject.read(length) self.length += length unencryptedData = self.cipher.decrypt(rawData) return unencryptedData def tell(self): return self.length class EncryptedSocketObjectHandler(): def __init__(self, socket, cipher): self.socket = socket self.cipher = cipher def send(self, stuff): self.socket.send(self.cipher.encrypt(stuff)) def close(self): self.socket.close() class PacketListener(threading.Thread): def __init__(self, connection, window, socket, FileObject): threading.Thread.__init__(self) self.connection = connection self.socket = socket self.FileObject = FileObject self.window = window self.encryptedConnection = False self.kill = False def enableEncryption(self): #Create an AES cipher from the previously obtained public key self.cipher = AES.new(self.connection.sharedSecret, AES.MODE_CFB, IV=self.connection.sharedSecret) self.decipher = AES.new(self.connection.sharedSecret, AES.MODE_CFB, IV=self.connection.sharedSecret) self.rawsocket = self.socket self.connection.rawsocket = self.connection.socket self.socket = EncryptedSocketObjectHandler(self.rawsocket, self.cipher) self.connection.socket = self.socket self.rawFileObject = self.FileObject self.connection.rawFileObject = self.connection.FileObject self.FileObject = EncryptedFileObjectHandler(self.rawFileObject, self.decipher) self.connection.FileObject = self.FileObject self.encryptedConnection = True def run(self): if(self.connection.options != None and self.connection.options.dumpPackets): f = open(self.connection.options.filename, 'w') while True: if (self.kill): break try: response = self.FileObject.read(1) if (response == ""): continue except Exception, e: if(self.window): self.window.Status.SetLabel("Ping timeout") else: print "Ping timeout" sys.exit() break if(response == "\x00"): packet = PacketListenerManager.handle00(self.FileObject, self.socket) elif(response == "\x01"): packet = PacketListenerManager.handle01(self.FileObject) print "Logged in \o/ Received an entity id of " + str(packet['EntityID']) elif(response == "\x03"): packet = PacketListenerManager.handle03(self.FileObject) # Add "\x1b" because it is essential for ANSI escapes emitted by translate_escapes filtered_string = filter(lambda x: x in string.printable + "\x1b", Utils.translate_escapes(packet['Message'])) #print message.replace(u'\xa7', '&') print filtered_string packet['Message'] = filter(lambda x: x in string.printable, packet['Message']) elif(response == "\x04"): packet = PacketListenerManager.handle04(self.FileObject) elif(response == "\x05"): packet = PacketListenerManager.handle05(self.FileObject) elif(response == "\x06"): packet = PacketListenerManager.handle06(self.FileObject) elif(response == "\x07"): packet = PacketListenerManager.handle07(self.FileObject) elif(response == "\x08"): packet = PacketListenerManager.handle08(self.FileObject) elif(response == "\x09"): packet = PacketListenerManager.handle09(self.FileObject) elif(response == "\x0D"): packet = PacketListenerManager.handle0D(self.FileObject) elif(response == "\x11"): packet = PacketListenerManager.handle11(self.FileObject) elif(response == "\x12"): packet = PacketListenerManager.handle12(self.FileObject) elif(response == "\x14"): packet = PacketListenerManager.handle14(self.FileObject) elif(response == "\x15"): packet = PacketListenerManager.handle15(self.FileObject) elif(response == "\x16"): packet = PacketListenerManager.handle16(self.FileObject) elif(response == "\x17"): packet = PacketListenerManager.handle17(self.FileObject) elif(response == "\x18"): packet = PacketListenerManager.handle18(self.FileObject) elif(response == "\x19"): packet = PacketListenerManager.handle19(self.FileObject) elif(response == "\x1A"): packet = PacketListenerManager.handle1A(self.FileObject) elif(response == "\x1C"): packet = PacketListenerManager.handle1C(self.FileObject) elif(response == "\x1D"): packet = PacketListenerManager.handle1D(self.FileObject) elif(response == "\x1E"): packet = PacketListenerManager.handle1E(self.FileObject) elif(response == "\x1F"): packet = PacketListenerManager.handle1F(self.FileObject) elif(response == "\x20"): packet = PacketListenerManager.handle20(self.FileObject) elif(response == "\x21"): packet = PacketListenerManager.handle21(self.FileObject) elif(response == "\x22"): packet = PacketListenerManager.handle22(self.FileObject) elif(response == "\x23"): packet = PacketListenerManager.handle23(self.FileObject) elif(response == "\x26"): packet = PacketListenerManager.handle26(self.FileObject) elif(response == "\x27"): packet = PacketListenerManager.handle27(self.FileObject) elif(response == "\x28"): packet = PacketListenerManager.handle28(self.FileObject) elif(response == "\x29"): packet = PacketListenerManager.handle29(self.FileObject) elif(response == "\x2A"): packet = PacketListenerManager.handle2A(self.FileObject) elif(response == "\x2B"): packet = PacketListenerManager.handle2B(self.FileObject) elif(response == "\x33"): PacketListenerManager.handle33(self.FileObject) packet = {'ChunkPlaceHolder' : 0} elif(response == "\x34"): packet = PacketListenerManager.handle34(self.FileObject) elif(response == "\x35"): packet = PacketListenerManager.handle35(self.FileObject) elif(response == "\x36"): packet = PacketListenerManager.handle36(self.FileObject) elif(response == "\x37"): packet = PacketListenerManager.handle37(self.FileObject) elif(response == "\x38"): PacketListenerManager.handle38(self.FileObject) packet = {'ChunkPlaceHolder' : 0} elif(response == "\x3C"): packet = PacketListenerManager.handle3C(self.FileObject) elif(response == "\x3D"): packet = PacketListenerManager.handle3D(self.FileObject) elif(response == "\x3E"): packet = PacketListenerManager.handle3E(self.FileObject) elif(response == "\x46"): packet = PacketListenerManager.handle46(self.FileObject) elif(response == "\x47"): packet = PacketListenerManager.handle47(self.FileObject) elif(response == "\x64"): packet = PacketListenerManager.handle64(self.FileObject) elif(response == "\x65"): packet = PacketListenerManager.handle65(self.FileObject) elif(response == "\x67"): packet = PacketListenerManager.handle67(self.FileObject) elif(response == "\x68"): packet = PacketListenerManager.handle68(self.FileObject) elif(response == "\x69"): packet = PacketListenerManager.handle69(self.FileObject) elif(response == "\x6A"): packet = PacketListenerManager.handle6A(self.FileObject) elif(response == "\x6B"): packet = PacketListenerManager.handle6B(self.FileObject) elif(response == "\x82"): packet = PacketListenerManager.handle82(self.FileObject) elif(response == "\x83"): packet = PacketListenerManager.handle83(self.FileObject) elif(response == "\x84"): packet = PacketListenerManager.handle84(self.FileObject) elif(response == "\xC8"): packet = PacketListenerManager.handleC8(self.FileObject) elif(response == "\xC9"): packet = PacketListenerManager.handleC9(self.FileObject) elif(response == "\xCA"): packet = PacketListenerManager.handleCA(self.FileObject) elif(response == "\xCB"): packet = PacketListenerManager.handleCB(self.FileObject) elif(response == "\xFA"): packet = PacketListenerManager.handleFA(self.FileObject) elif(response == "\xFC"): packet = PacketListenerManager.handleFC(self.FileObject) if (not self.encryptedConnection): self.enableEncryption() self.connection.isConnected = True PacketSenderManager.sendCD(self.socket, 0) elif(response == "\xFF"): packet = PacketListenerManager.handleFF(self.FileObject) print "Disconnected: " + packet['Reason'] if(self.connection.options != None and self.connection.options.dumpPackets): f.close() self.connection.disconnect() sys.exit(1) break else: print "Protocol error: " + hex(ord(response)) self.connection.disconnect("Protocol error, invalid packet: " + hex(ord(response))) if(f != None): f.close() sys.exit(1) break if(self.connection.options != None and self.connection.options.dumpPackets): f.write(hex(ord(response)) + " : " + str(packet) + '\n')