| #!/usr/bin/env python |
| """ |
| 2015-2016 |
| Modified 2016 by ON.Lab |
| |
| Please refer questions to either the onos test mailing list at <onos-test@onosproject.org>, |
| the System Testing Plans and Results wiki page at <https://wiki.onosproject.org/x/voMg>, |
| or the System Testing Guide page at <https://wiki.onosproject.org/x/WYQg> |
| |
| TestON is free software: you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation, either version 2 of the License, or |
| ( at your option ) any later version. |
| |
| TestON is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with TestON. If not, see <http://www.gnu.org/licenses/>. |
| |
| ScapyCliDriver is the basic driver which will handle the Scapy functions |
| |
| TODO: Add Explanation on how to install scapy |
| """ |
| import pexpect |
| import re |
| import sys |
| import types |
| import os |
| from drivers.common.cli.emulatordriver import Emulator |
| |
| |
| class ScapyCliDriver( Emulator ): |
| |
| """ |
| ScapyCliDriver is the basic driver which will handle |
| the Scapy functions""" |
| def __init__( self ): |
| super( Emulator, self ).__init__() |
| self.handle = self |
| self.name = None |
| self.home = None |
| self.wrapped = sys.modules[ __name__ ] |
| self.flag = 0 |
| # TODO: Refactor driver to use these everywhere |
| self.hostPrompt = "~#" |
| self.bashPrompt = "\$" |
| self.scapyPrompt = ">>>" |
| |
| def connect( self, **connectargs ): |
| """ |
| Here the main is the TestON instance after creating |
| all the log handles.""" |
| try: |
| for key in connectargs: |
| vars( self )[ key ] = connectargs[ key ] |
| self.home = "~/mininet" |
| self.name = self.options[ 'name' ] |
| for key in self.options: |
| if key == "home": |
| self.home = self.options[ 'home' ] |
| break |
| if self.home is None or self.home == "": |
| self.home = "~/mininet" |
| |
| try: |
| if os.getenv( str( self.ip_address ) ) is not None: |
| self.ip_address = os.getenv( str( self.ip_address ) ) |
| else: |
| main.log.info( self.name + |
| ": Trying to connect to " + |
| self.ip_address ) |
| |
| except KeyError: |
| main.log.info( "Invalid host name," + |
| " connecting to local host instead" ) |
| self.ip_address = 'localhost' |
| except Exception as inst: |
| main.log.error( "Uncaught exception: " + str( inst ) ) |
| |
| self.handle = super( |
| ScapyCliDriver, |
| self ).connect( |
| user_name=self.user_name, |
| ip_address=self.ip_address, |
| port=None, |
| pwd=self.pwd ) |
| |
| if self.handle: |
| main.log.info( "Connection successful to the host " + |
| self.user_name + |
| "@" + |
| self.ip_address ) |
| return main.TRUE |
| else: |
| main.log.error( "Connection failed to the host " + |
| self.user_name + |
| "@" + |
| self.ip_address ) |
| main.log.error( "Failed to connect to the Mininet Host" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.error( self.name + ": EOF exception found" ) |
| main.log.error( self.name + ": " + self.handle.before ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def disconnect( self ): |
| """ |
| Called at the end of the test to stop the scapy component and |
| disconnect the handle. |
| """ |
| self.handle.sendline( '' ) |
| i = self.handle.expect( [ 'mininet>', pexpect.EOF, pexpect.TIMEOUT ], |
| timeout=2 ) |
| response = main.TRUE |
| if i == 0: |
| response = self.stopNet() |
| elif i == 1: |
| return main.TRUE |
| # print "Disconnecting Mininet" |
| if self.handle: |
| self.handle.sendline( "exit" ) |
| self.handle.expect( "exit" ) |
| self.handle.expect( "(.*)" ) |
| else: |
| main.log.error( "Connection failed to the host" ) |
| return response |
| |
| def stopNet( self, fileName="", timeout=5 ): |
| """ |
| Stops mininet. |
| Returns main.TRUE if the mininet successfully stops and |
| main.FALSE if the pexpect handle does not exist. |
| |
| Will cleanup and exit the test if scapy fails to stop |
| """ |
| main.log.info( self.name + ": Stopping scapy..." ) |
| response = '' |
| if self.handle: |
| try: |
| self.handle.sendline( "" ) |
| i = self.handle.expect( [ '>>>', |
| '\$', |
| pexpect.EOF, |
| pexpect.TIMEOUT ], |
| timeout ) |
| if i == 0: |
| main.log.info( "Exiting scapy..." ) |
| response = self.execute( |
| cmd="exit", |
| prompt="(.*)", |
| timeout=120 ) |
| main.log.info( self.name + ": Stopped" ) |
| response = main.TRUE |
| |
| if i == 1: |
| main.log.info( " Mininet trying to exit while not " + |
| "in the mininet prompt" ) |
| elif i == 2: |
| main.log.error( "Something went wrong exiting mininet" ) |
| elif i == 3: # timeout |
| main.log.error( "Something went wrong exiting mininet " + |
| "TIMEOUT" ) |
| |
| if fileName: |
| self.handle.sendline( "" ) |
| self.handle.expect( '\$' ) |
| self.handle.sendline( |
| "sudo kill -9 \`ps -ef | grep \"" + |
| fileName + |
| "\" | grep -v grep | awk '{print $2}'\`" ) |
| except pexpect.EOF: |
| main.log.error( self.name + ": EOF exception found" ) |
| main.log.error( self.name + ": " + self.handle.before ) |
| main.cleanup() |
| main.exit() |
| else: |
| main.log.error( self.name + ": Connection failed to the host" ) |
| response = main.FALSE |
| return response |
| |
| def createHostComponent( self, name ): |
| """ |
| Creates a new mininet cli component with the same parameters as self. |
| This new component is intended to be used to login to the hosts created |
| by mininet. |
| |
| Arguments: |
| name - The string of the name of this component. The new component |
| will be assigned to main.<name> . |
| In addition, main.<name>.name = str( name ) |
| """ |
| try: |
| # look to see if this component already exists |
| getattr( main, name ) |
| except AttributeError: |
| # namespace is clear, creating component |
| main.componentDictionary[name] = main.componentDictionary[self.name].copy() |
| main.componentDictionary[name]['connect_order'] = str( int( main.componentDictionary[name]['connect_order'] ) + 1 ) |
| main.componentInit( name ) |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| else: |
| # namespace is not clear! |
| main.log.error( name + " component already exists!" ) |
| main.cleanup() |
| main.exit() |
| |
| def removeHostComponent( self, name ): |
| """ |
| Remove host component |
| Arguments: |
| name - The string of the name of the component to delete. |
| """ |
| try: |
| # Get host component |
| component = getattr( main, name ) |
| except AttributeError: |
| main.log.error( "Component " + name + " does not exist." ) |
| return main.FALSE |
| try: |
| # Disconnect from component |
| component.disconnect() |
| # Delete component |
| delattr( main, name ) |
| # Delete component from ComponentDictionary |
| del( main.componentDictionary[name] ) |
| return main.TRUE |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def startHostCli( self, host=None ): |
| """ |
| Use the mininet m utility to connect to the host's cli |
| """ |
| # These are fields that can be used by scapy packets. Initialized to None |
| self.hostIp = None |
| self.hostMac = None |
| try: |
| if not host: |
| host = self.name |
| self.handle.sendline( self.home + "/util/m " + host ) |
| self.handle.expect( self.hostPrompt ) |
| return main.TRUE |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def startScapy( self, mplsPath="" ): |
| """ |
| Start the Scapy cli |
| optional: |
| mplsPath - The path where the MPLS class is located |
| NOTE: This can be a relative path from the user's home dir |
| """ |
| mplsLines = ['import imp', |
| 'imp.load_source( "mplsClass", "{}mplsClass.py" )'.format(mplsPath), |
| 'from mplsClass import MPLS', |
| 'bind_layers(Ether, MPLS, type = 0x8847)', |
| 'bind_layers(MPLS, MPLS, bottom_of_label_stack = 0)', |
| 'bind_layers(MPLS, IP)'] |
| |
| try: |
| self.handle.sendline( "scapy" ) |
| self.handle.expect( self.scapyPrompt ) |
| self.handle.sendline( "conf.color_theme = NoTheme()" ) |
| self.handle.expect( self.scapyPrompt ) |
| if mplsPath: |
| main.log.info( "Adding MPLS class" ) |
| main.log.info( "MPLS class path: " + mplsPath ) |
| for line in mplsLines: |
| main.log.info( "sending line: " + line ) |
| self.handle.sendline( line ) |
| self.handle.expect( self.scapyPrompt ) |
| return main.TRUE |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def stopScapy( self ): |
| """ |
| Exit the Scapy cli |
| """ |
| try: |
| self.handle.sendline( "exit()" ) |
| self.handle.expect( self.hostPrompt ) |
| return main.TRUE |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def buildEther( self, **kwargs ): |
| """ |
| Build an Ethernet frame |
| |
| Will create a frame class with the given options. If a field is |
| left blank it will default to the below value unless it is |
| overwritten by the next frame. |
| Default frame: |
| ###[ Ethernet ]### |
| dst= ff:ff:ff:ff:ff:ff |
| src= 00:00:00:00:00:00 |
| type= 0x800 |
| |
| Returns main.TRUE or main.FALSE on error |
| """ |
| try: |
| # Set the Ethernet frame |
| cmd = 'ether = Ether( ' |
| options = [] |
| for key, value in kwargs.iteritems(): |
| if isinstance( value, str ): |
| value = '"' + value + '"' |
| options.append( str( key ) + "=" + str( value ) ) |
| cmd += ", ".join( options ) |
| cmd += ' )' |
| self.handle.sendline( cmd ) |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| self.handle.sendline( "packet = ether" ) |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| return main.TRUE |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def buildIP( self, **kwargs ): |
| """ |
| Build an IP frame |
| |
| Will create a frame class with the given options. If a field is |
| left blank it will default to the below value unless it is |
| overwritten by the next frame. |
| Default frame: |
| ###[ IP ]### |
| version= 4 |
| ihl= None |
| tos= 0x0 |
| len= None |
| id= 1 |
| flags= |
| frag= 0 |
| ttl= 64 |
| proto= hopopt |
| chksum= None |
| src= 127.0.0.1 |
| dst= 127.0.0.1 |
| \options\ |
| |
| Returns main.TRUE or main.FALSE on error |
| """ |
| try: |
| # Set the IP frame |
| cmd = 'ip = IP( ' |
| options = [] |
| for key, value in kwargs.iteritems(): |
| if isinstance( value, str ): |
| value = '"' + value + '"' |
| options.append( str( key ) + "=" + str( value ) ) |
| cmd += ", ".join( options ) |
| cmd += ' )' |
| self.handle.sendline( cmd ) |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| self.handle.sendline( "packet = ether/ip" ) |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| return main.TRUE |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def buildIPv6( self, **kwargs ): |
| """ |
| Build an IPv6 frame |
| |
| Will create a frame class with the given options. If a field is |
| left blank it will default to the below value unless it is |
| overwritten by the next frame. |
| Default frame: |
| ###[ IPv6 ]### |
| version= 6 |
| tc= 0 |
| fl= 0 |
| plen= None |
| nh= No Next Header |
| hlim= 64 |
| src= ::1 |
| dst= ::1 |
| |
| Returns main.TRUE or main.FALSE on error |
| """ |
| try: |
| # Set the IPv6 frame |
| cmd = 'ipv6 = IPv6( ' |
| options = [] |
| for key, value in kwargs.iteritems(): |
| if isinstance( value, str ): |
| value = '"' + value + '"' |
| options.append( str( key ) + "=" + str( value ) ) |
| cmd += ", ".join( options ) |
| cmd += ' )' |
| self.handle.sendline( cmd ) |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| self.handle.sendline( "packet = ether/ipv6" ) |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| return main.TRUE |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def buildTCP( self, ipVersion=4, **kwargs ): |
| """ |
| Build an TCP frame |
| |
| Will create a frame class with the given options. If a field is |
| left blank it will default to the below value unless it is |
| overwritten by the next frame. |
| |
| NOTE: Some arguments require quotes around them. It's up to you to |
| know which ones and to add them yourself. Arguments with an asterisk |
| do not need quotes. |
| |
| Options: |
| ipVersion - Either 4 (default) or 6, indicates what Internet Protocol |
| frame to use to encapsulate into |
| Default frame: |
| ###[ TCP ]### |
| sport= ftp_data * |
| dport= http * |
| seq= 0 |
| ack= 0 |
| dataofs= None |
| reserved= 0 |
| flags= S |
| window= 8192 |
| chksum= None |
| urgptr= 0 |
| options= {} |
| |
| Returns main.TRUE or main.FALSE on error |
| """ |
| try: |
| # Set the TCP frame |
| cmd = 'tcp = TCP( ' |
| options = [] |
| for key, value in kwargs.iteritems(): |
| options.append( str( key ) + "=" + str( value ) ) |
| cmd += ", ".join( options ) |
| cmd += ' )' |
| self.handle.sendline( cmd ) |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| if str( ipVersion ) is '4': |
| self.handle.sendline( "packet = ether/ip/tcp" ) |
| elif str( ipVersion ) is '6': |
| self.handle.sendline( "packet = ether/ipv6/tcp" ) |
| else: |
| main.log.error( "Unrecognized option for ipVersion, given " + |
| repr( ipVersion ) ) |
| return main.FALSE |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| return main.TRUE |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def buildUDP( self, ipVersion=4, **kwargs ): |
| """ |
| Build an UDP frame |
| |
| Will create a frame class with the given options. If a field is |
| left blank it will default to the below value unless it is |
| overwritten by the next frame. |
| |
| NOTE: Some arguments require quotes around them. It's up to you to |
| know which ones and to add them yourself. Arguments with an asterisk |
| do not need quotes. |
| |
| Options: |
| ipVersion - Either 4 (default) or 6, indicates what Internet Protocol |
| frame to use to encapsulate into |
| Default frame: |
| ###[ UDP ]### |
| sport= domain * |
| dport= domain * |
| len= None |
| chksum= None |
| |
| Returns main.TRUE or main.FALSE on error |
| """ |
| try: |
| # Set the UDP frame |
| cmd = 'udp = UDP( ' |
| options = [] |
| for key, value in kwargs.iteritems(): |
| options.append( str( key ) + "=" + str( value ) ) |
| cmd += ", ".join( options ) |
| cmd += ' )' |
| self.handle.sendline( cmd ) |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| if str( ipVersion ) is '4': |
| self.handle.sendline( "packet = ether/ip/udp" ) |
| elif str( ipVersion ) is '6': |
| self.handle.sendline( "packet = ether/ipv6/udp" ) |
| else: |
| main.log.error( "Unrecognized option for ipVersion, given " + |
| repr( ipVersion ) ) |
| return main.FALSE |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| return main.TRUE |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def buildICMP( self, **kwargs ): |
| """ |
| Build an ICMP frame |
| |
| Will create a frame class with the given options. If a field is |
| left blank it will default to the below value unless it is |
| overwritten by the next frame. |
| Default frame: |
| ###[ ICMP ]### |
| type= echo-request |
| code= 0 |
| chksum= None |
| id= 0x0 |
| seq= 0x0 |
| |
| Returns main.TRUE or main.FALSE on error |
| """ |
| try: |
| # Set the ICMP frame |
| cmd = 'icmp = ICMP( ' |
| options = [] |
| for key, value in kwargs.iteritems(): |
| if isinstance( value, str ): |
| value = '"' + value + '"' |
| options.append( str( key ) + "=" + str( value ) ) |
| cmd += ", ".join( options ) |
| cmd += ' )' |
| self.handle.sendline( cmd ) |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| self.handle.sendline( "packet = ether/ip/icmp" ) |
| self.handle.expect( self.scapyPrompt ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| return main.TRUE |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def sendPacket( self, iface=None, packet=None, timeout=1 ): |
| """ |
| Send a packet with either the given scapy packet command, or use the |
| packet saved in the variable 'packet'. |
| |
| Examples of a valid string for packet: |
| |
| Simple IP packet |
| packet='Ether(dst="a6:d9:26:df:1d:4b")/IP(dst="10.0.0.2")' |
| |
| A Ping with two vlan tags |
| packet='Ether(dst='ff:ff:ff:ff:ff:ff')/Dot1Q(vlan=1)/Dot1Q(vlan=10)/ |
| IP(dst='255.255.255.255', src='192.168.0.1')/ICMP()' |
| |
| Returns main.TRUE or main.FALSE on error |
| """ |
| try: |
| # TODO: add all params, or use kwargs |
| sendCmd = 'srp( ' |
| if packet: |
| sendCmd += packet |
| else: |
| sendCmd += "packet" |
| if iface: |
| sendCmd += ", iface='{}'".format( iface ) |
| |
| sendCmd += ', timeout=' + str( timeout ) + ')' |
| self.handle.sendline( sendCmd ) |
| self.handle.expect( self.scapyPrompt ) |
| # main.log.warn( "Send packet response: {}".format( self.handle.before ) ) |
| if "Traceback" in self.handle.before: |
| # KeyError, SyntaxError, ... |
| main.log.error( "Error in sending command: " + self.handle.before ) |
| return main.FALSE |
| # TODO: Check # of packets sent? |
| return main.TRUE |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def startFilter( self, ifaceName=None, sniffCount=1, pktFilter="ip" ): |
| """ |
| Listen for packets using the given filters |
| |
| Options: |
| ifaceName - the name of the interface to listen on. If none is given, |
| defaults to <host name>-eth0 |
| pktFilter - A string in Berkeley Packet Filter (BPF) format which |
| specifies which packets to sniff |
| sniffCount - The number of matching packets to capture before returning |
| |
| Returns main.TRUE or main.FALSE on error |
| """ |
| try: |
| # TODO: add all params, or use kwargs |
| ifaceName = str( ifaceName ) if ifaceName else self.name + "-eth0" |
| # Set interface |
| self.handle.sendline( ' conf.iface = "' + ifaceName + '"' ) |
| self.handle.expect( self.scapyPrompt ) |
| cmd = 'pkt = sniff(count = ' + str( sniffCount ) +\ |
| ', filter = "' + str( pktFilter ) + '")' |
| main.log.info( "Filter on " + self.name + ' > ' + cmd ) |
| self.handle.sendline( cmd ) |
| self.handle.expect( '"\)\r\n' ) |
| # TODO: parse this? |
| return main.TRUE |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def checkFilter( self, timeout=10 ): |
| """ |
| Check that a filter returned and returns the reponse |
| """ |
| try: |
| i = self.handle.expect( [ self.scapyPrompt, pexpect.TIMEOUT ], timeout=timeout ) |
| if i == 0: |
| return main.TRUE |
| else: |
| return main.FALSE |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def killFilter( self ): |
| """ |
| Kill a scapy filter |
| """ |
| try: |
| self.handle.send( "\x03" ) # Send a ctrl-c to kill the filter |
| self.handle.expect( self.scapyPrompt ) |
| return self.handle.before |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return None |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def readPackets( self ): |
| """ |
| Read all the packets captured by the previous filter |
| """ |
| try: |
| self.handle.sendline( "for p in pkt: p \n") |
| self.handle.expect( "for p in pkt: p \r\n... \r\n" ) |
| self.handle.expect( self.scapyPrompt ) |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return None |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| return self.handle.before |
| |
| def updateSelf( self ): |
| """ |
| Updates local MAC and IP fields |
| """ |
| self.hostMac = self.getMac() |
| self.hostIp = self.getIp() |
| |
| def getMac( self, ifaceName=None ): |
| """ |
| Save host's MAC address |
| """ |
| try: |
| ifaceName = str( ifaceName ) if ifaceName else self.name + "-eth0" |
| cmd = 'get_if_hwaddr("' + str( ifaceName ) + '")' |
| self.handle.sendline( cmd ) |
| self.handle.expect( self.scapyPrompt ) |
| pattern = r'(([0-9a-f]{2}[:-]){5}([0-9a-f]{2}))' |
| match = re.search( pattern, self.handle.before ) |
| if match: |
| return match.group() |
| else: |
| # the command will have an exception if iface doesn't exist |
| return None |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return None |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def getIp( self, ifaceName=None ): |
| """ |
| Save host's IP address |
| |
| Returns the IP of the first interface that is not a loopback device. |
| If no IP could be found then it will return 0.0.0.0. |
| """ |
| def getIPofInterface( ifaceName ): |
| cmd = 'get_if_addr("' + str( ifaceName ) + '")' |
| self.handle.sendline( cmd ) |
| self.handle.expect( self.scapyPrompt ) |
| |
| pattern = r'(((2[0-5]|1[0-9]|[0-9])?[0-9]\.){3}((2[0-5]|1[0-9]|[0-9])?[0-9]))' |
| match = re.search( pattern, self.handle.before ) |
| if match: |
| # NOTE: The command will return 0.0.0.0 if the iface doesn't exist |
| if match.group() == '0.0.0.0': |
| main.log.warn( 'iface {0} has no IPv4 address'.format( ifaceName ) ) |
| return match.group() |
| else: |
| return None |
| try: |
| if not ifaceName: |
| # Get list of interfaces |
| ifList = self.getIfList() |
| for ifaceName in ifList: |
| if ifaceName == "lo": |
| continue |
| ip = getIPofInterface( ifaceName ) |
| if ip != "0.0.0.0": |
| return ip |
| return "0.0.0.0" |
| else: |
| return getIPofInterface( ifaceName ) |
| |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return None |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| def getIfList( self ): |
| """ |
| Return List of Interfaces |
| """ |
| try: |
| self.handle.sendline( 'get_if_list()' ) |
| self.handle.expect( self.scapyPrompt ) |
| ifList = self.handle.before.split( '\r\n' ) |
| ifList = ifList[ 1 ].replace( "'","" )[ 1:-1 ].split( ', ' ) |
| return ifList |
| |
| except pexpect.TIMEOUT: |
| main.log.exception( self.name + ": Command timed out" ) |
| return None |
| except pexpect.EOF: |
| main.log.exception( self.name + ": connection closed." ) |
| main.cleanup() |
| main.exit() |
| except Exception: |
| main.log.exception( self.name + ": Uncaught exception!" ) |
| main.cleanup() |
| main.exit() |
| |
| if __name__ != "__main__": |
| sys.modules[ __name__ ] = ScapyCliDriver() |