def vncSetupStrategy(self):
self.password = '******'
logging.debug('%s Started.' % self)
logging.debug('%s Connection started, sending protocol version: [%s]' %
(self, rfb.protocolVersion()))
self.request.sendall(rfb.protocolVersion())
cli_ver = self.request.recv(12)
logging.debug('%s received client protocol [%s]' % (self, cli_ver))
# Offer security types
if cli_ver[:11] == rfb.protocolVersion()[:11]:
logging.debug('%s Sending security types to client' % self)
self.request.sendall(rfb.securityTypes())
else:
logging.debug("%s sending 'invalid version' to client" % self)
self.request.sendall(rfb.invalidVersion())
logging.debug('%s Closed connection due to invalid version.' %
self)
self.request.close()
# Receive client chosen security type
cli_sec_type = self.request.recv(1)
logging.debug('%s received security type [%s] from client' %
(self, hexlify(cli_sec_type)))
# VNC authentification:
if cli_sec_type == rfb.security['VNC_AUTH']:
logging.debug('%s sending auth challenge: [%s] to client' %
(self, hexlify(rfb.vncStaticAuthChallenge())))
self.request.sendall(rfb.vncAuthChallenge())
cli_sec_response = self.request.recv(16)
logging.debug('%s received security response [%s] from client' %
(self, hexlify(cli_sec_response)))
# logging.debug("%s decrypted response [%s] from client" % (self, hexlify(decrypt_response(self.password, cli_sec_response))))
# TODO: consider if verification of the userinputable jobidentifer can
# be verified at this stage
# if verify_response(self.password, data, rfb.vncAuthChallenge()):
if 1:
logging.debug('%s sending security result OK2 to client' %
self)
self.request.sendall(rfb.securityResult(True))
# THIS IS THE MAGIC: THE IDENTFIER IS FOUND!
self.provider_identifier = hexlify(cli_sec_response)
else:
logging.debug(
'%s Closed connection invalid authentification.' % self)
self.request.sendall(rfb.securityResult(False))
self.closeConnection()
elif cli_sec_type == rfb.security['NONE']:
# None: TODO: block this since it not usefull for proxy-awareness
logging.debug('%s sending security result OK1 to client' % self)
self.request.sendall(rfb.securityResult(True))
else:
# Implement other authentification mechanisms here if
# specifications for TightVNC / UltraVNC can be found.
# Note: this doesn't matter in the chase of proxy-awareness... anyway this is
# where it would be done.
logging.debug('%s sending security result BAD to client' % self)
self.request.sendall(rfb.securityResult(False))
self.closeConnection()
def datareceived(self, data):
# Receive protocol version, send protocol version
if self.state == 0:
logging.debug('%s received protocol [%s] from vncserver ' % (self, data))
if data == rfb.protocolVersion():
logging.debug('%s sending protocol [%s] to vncserver ' % (self, rfb.protocolVersion()))
self.buffersize = 1
self.request.sendall(rfb.protocolVersion())
self.state += 10
else:
logging.debug('%s Closed connection due to invalid version.' % self)
self.closeConnection()
# Receive security type count, choose one and send it back
elif self.state == 10:
self.securityTypeCount = unpack('!B', data)
logging.debug('%s about to receive [%s] security types from vncserver' % (self, self.securityTypeCount))
if (self.securityTypeCount > 0):
self.buffersize = self.securityTypeCount[0]
self.state = 11
else:
self.closeConnection()
# Receive "self.securityTypeCount" security types, then pick one
elif self.state == 11:
logging.debug('%s received security types [%s] from vncserver ' % (self, hexlify(data)))
logging.debug('%s sending choice [%s] to vncserver ' % (self, hexlify(rfb.securityType(self.secType))))
self.request.sendall(rfb.securityType(self.secType))
self.buffersize = 4
self.state = 30
# Do authentification, this is skipped when choosing security type None
elif self.state == 20:
response = generate_response(self.password, data)
logging.debug('%s received auth challenge [%s]: ' % (self, hexlify(data)))
logging.debug('%s sending encrypted response [%s]: ' % (self, hexlify(response)))
self.request.sendall(rfb.vncAuthResponse(response))
# do auth based of chosen method
self.state = 30
# Receive security result, send client init
elif self.state == 30:
secResult = unpack('!I', data)
if secResult == (0,): # SUCCESS
logging.debug('%s send client init message to vncserver' % self)
self.request.sendall(rfb.clientInit(True))
self.buffersize = 24
self.state = 40
else: # FAILURE
self.buffersize = secResult[0]
self.state = 31
# Received auth failure reason
elif self.state == 31:
logging.debug('%s received security result [%s] from vncserver ' % (self, hexlify(data)))
if data == rfb.securityResult(False):
logging.debug('Closed connection due to invalid auth.')
self.closeConnection()
else:
logging.debug('%s send client init message to vncserver' % self)
self.request.sendall(rfb.clientInit(True))
self.buffersize = 24
self.state = 40
# Receive server init, start sending client messages
elif self.state == 40:
self.serverInit = unpack('!HHBBBBHHHBBBBBBI', data)
logging.debug('%s received server init [%s] len %d hostlen %d' % (self, self.serverInit, len(self.serverInit), self.serverInit[15]))
self.buffersize = self.serverInit[15]
self.state = 41
# Receive server name, send pixelformat and encodings
elif self.state == 41:
hostname = data
self.migraId = generate_response(hostname, rfb.vncAuthChallenge())
logging.info('[hostname=%s] [migraid=%s]' % (hostname, hexlify(self.migraId)))
# Set pixel and set encodings
self.request.sendall(rfb.setPixelFormat(32, 24, False, True, 255, 255, 255, 16, 8, 0))
self.request.sendall(rfb.setEncodings())
self.buffersize = 1024
self.state = 50
elif self.state == 50:
# The first byte off all request are the messageType
# Determine client request and based on policy: forward, local, drop the message.
messageType = data[0:1]
knownMessageType = False
for messageTypesName, messageTypeValue in rfb.clientMessages.iteritems():
if messageTypeValue == messageType:
knownMessageType = True
logging.debug('%s Received message type [%s] from vncserver' % (self, messageTypesName))
# Forward request to client
logging.debug("%s [clients=%d] >>" % (self, len(self.vnc_clients)))
# Try to find a client connection
if len(self.vnc_clients) == 0:
logging.debug("%s Trying to find a matching vncclient" % self)
self.lock.acquire()
for t in self.threads:
if t.__class__.__name__ == 'VncClientHandler' and \
t.migraId == self.migraId and \
t.migraId != None:
logging.debug("%s found %s migraIds:[\n %s,\n %s]" % (self, t, hexlify(t.migraId), hexlify(self.migraId)))
self.vnc_clients.append(t)
self.lock.release()
# Forward to client(s)
if len(self.vnc_clients) > 0:
for client in self.vnc_clients:
logging.debug("%s [forwarding=%s,\n to client=%s\n from server %s]" % (self, hexlify(messageType), hexlify(client.migraId), hexlify(self.migraId)))
try:
client.request.sendall(data)
except:
self.vnc_clients.remove(client)
logging.exception("%s client disconnected %s" % (self, hexlify(client.migraId)))
logging.debug("%s client disconnected %s" % (self, hexlify(client.migraId)))
logging.debug("%s <<" % self)
else:
logging.debug('%s Closed connection due to invalid/unknown state.' % self)
self.closeConnection()
def vncSetupStrategy(self):
self.password = '******'
logging.debug("%s Started." % self)
logging.debug("%s Connection started, sending protocol version: [%s]" % (self, rfb.protocolVersion()))
self.request.sendall(rfb.protocolVersion())
cli_ver = self.request.recv(12)
logging.debug("%s received client protocol [%s]" % (self, cli_ver))
# Offer security types
if cli_ver[:11] == rfb.protocolVersion()[:11]:
logging.debug("%s Sending security types to client" % self)
self.request.sendall(rfb.securityTypes())
else:
logging.debug("%s sending 'invalid version' to client" % self)
self.request.sendall(rfb.invalidVersion())
logging.debug('%s Closed connection due to invalid version.' % self)
self.request.close()
# Receive client chosen security type
cli_sec_type = self.request.recv(1)
logging.debug("%s received security type [%s] from client" % (self, hexlify(cli_sec_type)))
# VNC authentification:
if cli_sec_type == rfb.security['VNC_AUTH']:
logging.debug("%s sending auth challenge: [%s] to client" % (self, hexlify(rfb.vncStaticAuthChallenge())))
self.request.sendall(rfb.vncAuthChallenge())
cli_sec_response = self.request.recv(16)
logging.debug("%s received security response [%s] from client" % (self, hexlify(cli_sec_response)))
#logging.debug("%s decrypted response [%s] from client" % (self, hexlify(decrypt_response(self.password, cli_sec_response))))
# TODO: consider if verification of the userinputable jobidentifer can
# be verified at this stage
#if verify_response(self.password, data, rfb.vncAuthChallenge()):
if 1:
logging.debug("%s sending security result OK2 to client" % self)
self.request.sendall(rfb.securityResult(True))
# THIS IS THE MAGIC: THE IDENTFIER IS FOUND!
self.provider_identifier = hexlify(cli_sec_response)
else:
logging.debug('%s Closed connection invalid authentification.' % self)
self.request.sendall(rfb.securityResult(False))
self.closeConnection()
# None: TODO: block this since it not usefull for proxy-awareness
elif cli_sec_type == rfb.security['NONE']:
logging.debug("%s sending security result OK1 to client" % self)
self.request.sendall(rfb.securityResult(True))
# Implement other authentification mechanisms here if
# specifications for TightVNC / UltraVNC can be found.
# Note: this doesn't matter in the chase of proxy-awareness... anyway this is
# where it would be done.
else:
logging.debug("%s sending security result BAD to client" % self)
self.request.sendall(rfb.securityResult(False))
self.closeConnection()
def datareceived(self, data):
# receive protocol version and send security types
if self.state == 0:
logging.debug("%s received client protocol [%s]" % (self, data))
if data == rfb.protocolVersion():
logging.debug("%s Sending security types to client" % self)
self.request.sendall(rfb.securityTypes())
self.buffersize = 1
self.state += 10
else:
logging.debug("%s sending 'invalid auth' to client" % self)
self.request.sendall(rfb.invalidVersion())
logging.debug('%s Closed connection due to invalid version.' % self)
self.closeConnection()
# received clients chosen security type, start authentification
elif self.state == 10:
logging.debug("%s received security type [%s] from client" % (self, hexlify(data)))
# VNC authentification:
if data == rfb.security['VNC_AUTH']:
logging.debug("%s sending auth challenge: [%s] to client" % (self, hexlify(rfb.vncAuthChallenge())))
self.request.sendall(rfb.vncAuthChallenge())
self.state += 10
self.buffersize = 16
# None
elif data == rfb.security['NONE']:
logging.debug("%s sending security result OK1 to client" % self)
self.request.sendall(rfb.securityResult(True))
self.buffersize = 0
self.state += 20 # Proceed to initilization (30)
# Implement other authentification mechanisms here if
# specifications for TightVNC / UltraVNC can be found.
else:
logging.debug("%s sending security result BAD to client" % self)
self.request.sendall(rfb.securityResult(False))
self.closeConnection()
# received security response from client, send security result back
elif self.state == 20:
logging.debug("%s received security response [%s] from client" % (self, hexlify(data)))
logging.debug("%s decrypted response [%s] from client" % (self, hexlify(decrypt_response(self.password, data))))
self.buffersize = 1 # TODO: does this work??
# Do a stuff depending on auth method, currently only
#if verify_response(self.password, data, rfb.vncAuthChallenge()):
if 1:
logging.debug("%s sending security result OK2 to client" % self)
self.request.sendall(rfb.securityResult(True))
self.state += 10
# TODO: store the auth reponse
self.migraId = data
else:
logging.debug('%s Closed connection invalid authentification.' % self)
self.request.sendall(rfb.securityResult(False))
self.closeConnection()
# received client init, sending server init
elif self.state == 30:
logging.debug("%s received client init [%s]" % (self, hexlify(data)))
logging.debug("%s sending server init to client" % self)
if 1: # TODO: Verify client message and store it in client structure
serverInit = None
# TODO: IMPROVE ON THIS
self.lock.acquire()
for t in self.threads:
if t.__class__.__name__ == 'VncServerHandler' and \
t.migraId == self.migraId and \
t.migraId != None:
serverInit = t.serverInit
logging.debug("%s trying to find a serverInit [%s] [%s,%s]" % (self, serverInit, serverInit[0],serverInit[1]))
self.lock.release()
if serverInit != None:
self.request.sendall(rfb.serverInit(serverInit[0], serverInit[1], rfb.PIXEL_FORMAT, 'MIG Virtual Machine.'))
else:
# TODO: do something better when server is not connected yet.
self.request.sendall(rfb.serverInit(1024, 768, rfb.PIXEL_FORMAT, 'MIG Virtual Machine.'))
self.buffersize = 1024
self.state += 10
else:
logging.debug('%s Closed connection due to bad initialisation.' % self)
self.closeConnection()
# Vnc doing it's thing
elif self.state == 40:
# The first byte off all request are the messageType
# Determine client request and based on policy: forward, local, drop the message.
messageType = data[0:1]
knownMessageType = False
for messageTypesName, messageTypeValue in rfb.clientMessages.iteritems():
if messageTypeValue == messageType:
knownMessageType = True
logging.debug('%s Received message [%s]' % (self, messageTypesName))
if not knownMessageType:
logging.debug('%s Unknown messagetype [%s]' % (self, messageType))
logging.debug("%s >>" % self)
# Try to find a server connection
if self.vnc_server == None:
logging.debug("%s Trying to find a matching vncserver" % self)
self.lock.acquire()
for t in self.threads:
if t.__class__.__name__ == 'VncServerHandler' and \
t.migraId == self.migraId and \
t.migraId != None:
self.vnc_server = t
logging.debug("%s found %s migraIds:[\n %s,\n %s]" % (self, self.vnc_server, hexlify(self.vnc_server.migraId), hexlify(self.migraId)))
self.lock.release()
# Forward request to server
if self.vnc_server != None:
try:
logging.debug("%s [forwarding=%s,\n from client=%s\n to server %s]" % (self, hexlify(messageType), hexlify(self.migraId), hexlify(self.vnc_server.migraId)))
self.vnc_server.request.sendall(data)
except:
logging.exception("%s server disconnected %s" % (self, hexlify(self.vnc_server.migraId)))
self.vnc_server = None
logging.debug("%s <<" % self)
# Put this somewhere else, it's very sexy and very experimental :)
# TODO: reverse the text, fix colors
if messageType == rfb.clientMessages.get('FRAMEBUFFER_UPDATE_REQUEST') and self.vnc_server == None:
logging.debug("%s trying to send fake framebufferupdate" % self)
blockSize = 1024 * 768 * (32 / 8)
input = open('/home/safl/proxy/vncmedia/wait.bmp', 'r')
block = input.read(blockSize+70) # funny offset due to bmp representation
block = block[70::]
fakestatus = rfb.Rectangle(0, 0, 1024, 768, block)
framebufferupdate = pack("!BBHHHHHi", 0, 0, 1,
fakestatus.x, fakestatus.y, fakestatus.width, fakestatus.height,
0)
try:
self.request.sendall(framebufferupdate)
self.request.sendall(block[::-1]) # reverse the order
except:
logging.exception('%s Closed connection due to failure in sending status image!' % self)
self.closeConnection()
else:
logging.debug('%s Closed connection due to unknown data input!' % self)
self.closeConnection()
