def _flow_mod_add (self, flow_mod, connection, table):
"""
Process an OFPFC_ADD flow mod sent to the switch.
"""
match = flow_mod.match
priority = flow_mod.priority
if flow_mod.flags & OFPFF_EMERG:
if flow_mod.idle_timeout != 0 or flow_mod.hard_timeout != 0:
# Emergency flow mod has non-zero timeouts. Do not add.
self.log.warn("Rejecting emergency flow with nonzero timeout")
self.send_error(type=OFPET_FLOW_MOD_FAILED,
code=OFPFMFC_BAD_EMERG_TIMEOUT,
ofp=flow_mod, connection=connection)
return
if flow_mod.flags & OFPFF_SEND_FLOW_REM:
# Emergency flows can't send removal messages, we we might want to
# reject this early. Sadly, there's no error code for this, so we just
# abuse EPERM. If we eventually support Nicira extended error codes,
# we should use one here.
self.log.warn("Rejecting emergency flow with flow removal flag")
self.send_error(type=OFPET_FLOW_MOD_FAILED,
code=OFPFMFC_EPERM,
ofp=flow_mod, connection=connection)
return
#NOTE: An error is sent anyways because the current implementation does
# not support emergency entries.
self.log.warn("Rejecting emergency flow (not supported)")
self.send_error(type=OFPET_FLOW_MOD_FAILED,
code=OFPFMFC_ALL_TABLES_FULL,
ofp=flow_mod, connection=connection)
return
#FELIPE TOMM - TCC
#AQUI CHAMA A FUNCAO QUE VERIFICA SE JA EXISTE UMA REGRA IGUAL
new_entry = TableEntry.from_flow_mod(flow_mod)
log = core.getLogger()
log.debug("Entrou _FLOW_MOD_ADD")
if flow_mod.flags & OFPFF_CHECK_OVERLAP:
log.debug("Entrou _FLOW_MOD_ADD - 1 if")
if table.check_for_overlapping_entry(new_entry):
# Another entry overlaps. Do not add.
log.debug("Entrou _FLOW_MOD_ADD - 1 if")
self.send_error(type=OFPET_FLOW_MOD_FAILED, code=OFPFMFC_OVERLAP,
ofp=flow_mod, connection=connection)
return
if flow_mod.command == OFPFC_ADD:
# Exactly matching entries have to be removed if OFPFC_ADD
table.remove_matching_entries(match, priority=priority, strict=True)
if len(table) >= self.max_entries:
# Flow table is full. Respond with error message.
self.send_error(type=OFPET_FLOW_MOD_FAILED,
code=OFPFMFC_ALL_TABLES_FULL,
ofp=flow_mod, connection=connection)
return
table.add_entry(new_entry)
def _do_launch(argv):
component_order = []
components = {}
curargs = {}
pox_options = curargs
for arg in argv:
if not arg.startswith("-"):
if arg not in components:
components[arg] = []
curargs = {}
components[arg].append(curargs)
component_order.append(arg)
else:
arg = arg.lstrip("-").split("=", 1)
arg[0] = arg[0].replace("-", "_")
if len(arg) == 1: arg.append(True)
curargs[arg[0]] = arg[1]
_options.process_options(pox_options)
global core
if pox.core.core is not None:
core = pox.core.core
core.getLogger('boot').debug('Using existing POX core')
else:
core = pox.core.initialize(_options.threaded_selecthub,
_options.epoll_selecthub,
_options.handle_signals)
_pre_startup()
modules = _do_imports(n.split(':')[0] for n in component_order)
if modules is False:
return False
inst = {}
for name in component_order:
cname = name
inst[name] = inst.get(name, -1) + 1
params = components[name][inst[name]]
name = name.split(":", 1)
launch = name[1] if len(name) == 2 else "launch"
name = name[0]
name, module, members = modules[name]
if launch in members:
f = members[launch]
# We explicitly test for a function and not an arbitrary callable
if type(f) is not types.FunctionType:
print(launch, "in", name, "isn't a function!")
return False
if getattr(f, '_pox_eval_args', False):
import ast
for k, v in params.items():
if isinstance(v, str):
try:
params[k] = ast.literal_eval(v)
except:
# Leave it as a string
pass
multi = False
if f.__code__.co_argcount > 0:
#FIXME: This code doesn't look quite right to me and may be broken
# in some cases. We should refactor to use inspect anyway,
# which should hopefully just fix it.
if (f.__code__.co_varnames[f.__code__.co_argcount -
1] == '__INSTANCE__'):
# It's a multi-instance-aware component.
multi = True
# Special __INSTANCE__ paramter gets passed a tuple with:
# 1. The number of this instance (0...n-1)
# 2. The total number of instances for this module
# 3. True if this is the last instance, False otherwise
# The last is just a comparison between #1 and #2, but it's
# convenient.
params['__INSTANCE__'] = (inst[cname],
len(components[cname]),
inst[cname] + 1 == len(
components[cname]))
if multi == False and len(components[cname]) != 1:
print(name, "does not accept multiple instances")
return False
try:
if f(**params) is False:
# Abort startup
return False
except TypeError as exc:
instText = ''
if inst[cname] > 0:
instText = "instance {0} of ".format(inst[cname] + 1)
print("Error executing {2}{0}.{1}:".format(
name, launch, instText))
if inspect.currentframe() is sys.exc_info()[2].tb_frame:
# Error is with calling the function
# Try to give some useful feedback
if _options.verbose:
traceback.print_exc()
else:
exc = sys.exc_info()[0:2]
print(''.join(traceback.format_exception_only(*exc)),
end='')
print()
EMPTY = "<Unspecified>"
code = f.__code__
argcount = code.co_argcount
argnames = code.co_varnames[:argcount]
defaults = list((f.func_defaults) or [])
defaults = [EMPTY] * (argcount - len(defaults)) + defaults
args = {}
for n, a in enumerate(argnames):
args[a] = [EMPTY, EMPTY]
if n < len(defaults):
args[a][0] = defaults[n]
if a in params:
args[a][1] = params[a]
del params[a]
if '__INSTANCE__' in args:
del args['__INSTANCE__']
if f.__doc__ is not None:
print("Documentation for {0}:".format(name))
doc = f.__doc__.split("\n")
#TODO: only strip the same leading space as was on the first
# line
doc = map(str.strip, doc)
print('', ("\n ".join(doc)).strip())
#print(params)
#print(args)
print("Parameters for {0}:".format(name))
if len(args) == 0:
print(" None.")
else:
print(" {0:25} {1:25} {2:25}".format(
"Name", "Default", "Active"))
print(" {0:25} {0:25} {0:25}".format("-" * 15))
for k, v in args.iteritems():
print(" {0:25} {1:25} {2:25}".format(
k, str(v[0]),
str(v[1] if v[1] is not EMPTY else v[0])))
if len(params):
print(
"This component does not have a parameter named " +
"'{0}'.".format(params.keys()[0]))
return False
missing = [
k for k, x in args.iteritems()
if x[1] is EMPTY and x[0] is EMPTY
]
if len(missing):
print("You must specify a value for the '{0}' "
"parameter.".format(missing[0]))
return False
return False
else:
# Error is inside the function
raise
elif len(params) > 0 or launch is not "launch":
print("Module %s has no %s(), but it was specified or passed " \
"arguments" % (name, launch))
return False
return True
from pox import core
from pox.lib.addresses import *
from pox.lib.packet import *
from pox.lib.recoco.recoco import *
import re
# Get a logger
log = core.getLogger("fw")
class Firewall (object):
"""
Firewall class.
Extend this to implement some firewall functionality.
Don't change the name or anything -- the eecore component
expects it to be firewall.Firewall.
"""
PRINT_BUFFERS = False
TIMEOUT = 10
BASIC_PORTS = 1024
FTP_PORTS = 65536
def __init__(self):
"""
Constructor.
Put your initialization code here.
"""
#dictionary to hold all the monitoring data for the connections
#K: Port number
#V: Timer
self.timers = {}
def _do_launch (argv):
component_order = []
components = {}
curargs = {}
pox_options = curargs
for arg in argv:
if not arg.startswith("-"):
if arg not in components:
components[arg] = []
curargs = {}
components[arg].append(curargs)
component_order.append(arg)
else:
arg = arg.lstrip("-").split("=", 1)
arg[0] = arg[0].replace("-", "_")
if len(arg) == 1: arg.append(True)
curargs[arg[0]] = arg[1]
_options.process_options(pox_options)
global core
if pox.core.core is not None:
core = pox.core.core
core.getLogger('boot').debug('Using existing POX core')
else:
core = pox.core.initialize(_options.threaded_selecthub)
_pre_startup()
modules = _do_imports(n.split(':')[0] for n in component_order)
if modules is False:
return False
inst = {}
for name in component_order:
cname = name
inst[name] = inst.get(name, -1) + 1
params = components[name][inst[name]]
name = name.split(":", 1)
launch = name[1] if len(name) == 2 else "launch"
name = name[0]
name,module,members = modules[name]
if launch in members:
f = members[launch]
# We explicitly test for a function and not an arbitrary callable
if type(f) is not types.FunctionType:
print(launch, "in", name, "isn't a function!")
return False
if getattr(f, '_pox_eval_args', False):
import ast
for k,v in params.items():
if isinstance(v, str):
try:
params[k] = ast.literal_eval(v)
except:
# Leave it as a string
pass
multi = False
if f.func_code.co_argcount > 0:
#FIXME: This code doesn't look quite right to me and may be broken
# in some cases. We should refactor to use inspect anyway,
# which should hopefully just fix it.
if (f.func_code.co_varnames[f.func_code.co_argcount-1]
== '__INSTANCE__'):
# It's a multi-instance-aware component.
multi = True
# Special __INSTANCE__ paramter gets passed a tuple with:
# 1. The number of this instance (0...n-1)
# 2. The total number of instances for this module
# 3. True if this is the last instance, False otherwise
# The last is just a comparison between #1 and #2, but it's
# convenient.
params['__INSTANCE__'] = (inst[cname], len(components[cname]),
inst[cname] + 1 == len(components[cname]))
if multi == False and len(components[cname]) != 1:
print(name, "does not accept multiple instances")
return False
try:
if f(**params) is False:
# Abort startup
return False
except TypeError as exc:
instText = ''
if inst[cname] > 0:
instText = "instance {0} of ".format(inst[cname] + 1)
print("Error executing {2}{0}.{1}:".format(name,launch,instText))
if inspect.currentframe() is sys.exc_info()[2].tb_frame:
# Error is with calling the function
# Try to give some useful feedback
if _options.verbose:
traceback.print_exc()
else:
exc = sys.exc_info()[0:2]
print(''.join(traceback.format_exception_only(*exc)), end='')
print()
EMPTY = "<Unspecified>"
code = f.__code__
argcount = code.co_argcount
argnames = code.co_varnames[:argcount]
defaults = list((f.func_defaults) or [])
defaults = [EMPTY] * (argcount - len(defaults)) + defaults
args = {}
for n, a in enumerate(argnames):
args[a] = [EMPTY,EMPTY]
if n < len(defaults):
args[a][0] = defaults[n]
if a in params:
args[a][1] = params[a]
del params[a]
if '__INSTANCE__' in args:
del args['__INSTANCE__']
if f.__doc__ is not None:
print("Documentation for {0}:".format(name))
doc = f.__doc__.split("\n")
#TODO: only strip the same leading space as was on the first
# line
doc = map(str.strip, doc)
print('',("\n ".join(doc)).strip())
#print(params)
#print(args)
print("Parameters for {0}:".format(name))
if len(args) == 0:
print(" None.")
else:
print(" {0:25} {1:25} {2:25}".format("Name", "Default",
"Active"))
print(" {0:25} {0:25} {0:25}".format("-" * 15))
for k,v in args.iteritems():
print(" {0:25} {1:25} {2:25}".format(k,str(v[0]),
str(v[1] if v[1] is not EMPTY else v[0])))
if len(params):
print("This component does not have a parameter named "
+ "'{0}'.".format(params.keys()[0]))
return False
missing = [k for k,x in args.iteritems()
if x[1] is EMPTY and x[0] is EMPTY]
if len(missing):
print("You must specify a value for the '{0}' "
"parameter.".format(missing[0]))
return False
return False
else:
# Error is inside the function
raise
elif len(params) > 0 or launch is not "launch":
print("Module %s has no %s(), but it was specified or passed " \
"arguments" % (name, launch))
return False
return True
from pox.lib.packet.ipv4 import ipv4 from pox.lib.packet.arp import arp from pox.lib.addresses import IPAddr, EthAddr from pox.lib.util import str_to_bool, dpid_to_str from pox.lib.recoco import Timer from pox.lib.revent import * import pox.openflow.libopenflow_01 as of import time import numpy as np import pickle from tensorflow.keras.models import load_model log = getLogger() packets_arr = [] # Timeout for flows FLOW_IDLE_TIMEOUT = 10 # Timeout for ARP entries ARP_TIMEOUT = 60 * 2 # Maximum number of packet to buffer on a switch for an unknown IP MAX_BUFFERED_PER_IP = 5 # Maximum time to hang on to a buffer for an unknown IP in seconds MAX_BUFFER_TIME = 5
import subprocess
import re
import multiprocessing
import multiprocessing.dummy
import xmlrpclib
import json
import inspect
import socket
from ssl import SSLError
import pox.core
from pox.core import core
from pox.lib.addresses import *
from pox.lib.revent import *
log = core.getLogger()
config = {}
lock = multiprocessing.Lock()
rpc_lock = multiprocessing.Lock()
#############################################################################
# from: http://stackoverflow.com/questions/372365/set-timeout-for-xmlrpclib-serverproxy
import httplib
class TimeoutHTTPSConnection (httplib.HTTPSConnection):
def connect (self):
httplib.HTTPSConnection.connect(self)
self.sock.settimeout(self.timeout)
def set_timeout (self, timeout):
self.timeout = timeout
import subprocess
import re
import multiprocessing
import multiprocessing.dummy
import xmlrpclib
import json
import inspect
import socket
from ssl import SSLError
import pox.core
from pox.core import core
from pox.lib.addresses import *
from pox.lib.revent import *
log = core.getLogger()
config = {}
lock = multiprocessing.Lock()
rpc_lock = multiprocessing.Lock()
#############################################################################
# from: http://stackoverflow.com/questions/372365/set-timeout-for-xmlrpclib-serverproxy
import httplib
class TimeoutHTTPSConnection (httplib.HTTPSConnection):
def connect (self):
httplib.HTTPSConnection.connect(self)
self.sock.settimeout(self.timeout)
def set_timeout (self, timeout):
self.timeout = timeout
def _do_launch(argv):
component_order = []
# Ordem dos componentes
# Lista vazia
components = {}
# Componentes
# Dicionario vazio
curargs = {}
# Argumentos atuais
# Dicionario vazio
pox_options = curargs
# Opções do POX
# Copia a referência do objeto curargs para pox_options
for arg in argv:
# arg(argumento)
if not arg.startswith("-"): # Se arg não inicia com "-"
if arg not in components: # Se arg não estiver em componentes
components[arg] = [
] # Adiciona uma lista vazia para a chave arg
curargs = {} # Reatribui um dicionario vazio a curargs
components[arg].append(
curargs
) # Adiciona curargs a lista de componentes na posicao arg
component_order.append(
arg) # Adiciona arg a lista de ordem dos componentes
else: # Se arg inicia com "-"
arg = arg.lstrip("-").split("=", 1)
# Retira "-" arg e atribui uma lista de string com uma ou duas substrings
# da arg, separadas por "=".
arg[0] = arg[0].replace(
"-", "_") # Substitui todos os "-" por "_" de agr[0]
if len(arg) == 1: # Se arg[0] for uma lista de uma só posicao
arg.append(True) # Adiciona True no final
curargs[arg[0]] = arg[1]
# atribui o valor de arg[1] em curargs na posicao corespondente à string arg[0]
_options.process_options(pox_options)
# Se a opção for desconhecida encerra o processo.
global core
# Chama o objeto core como global
if pox.core.core is not None: # Verififar arquivo core
core = pox.core.core
core.getLogger('boot').debug('Using existing POX core')
else:
core = pox.core.initialize(_options.threaded_selecthub,
_options.epoll_selecthub,
_options.handle_signals)
# Só quando olhar a core.py
_pre_startup()
# Todas as opções do POX foram lidas.
modules = _do_imports(n.split(':')[0] for n in component_order)
# Modulos recebe uma lista com:
# -> Dicionario, contendo informações sobre os modulos importados.
# -> False, se não for possível importar o módulo
if modules is False:
return False
inst = {}
# Dicionário vazio
for name in component_order:
# Passapor todos os componentes da lista component_order
# atribui esse valos a name.
cname = name
# pra que serve "cname"?
inst[name] = inst.get(name, -1) + 1
# Atribui ao dicionario na chave "name", oq ele contiver com essa chave + 1
# ou -1 + 1 se ele não tiver uma chave "name".
params = components[name][inst[name]]
# params recebe o valor dos componentes na chave name na posição
# correspondente ao valor de inst[name].
name = name.split(":", 1)
# Atribui a name uma lista de strings com a string name quebrada
# em no máximo duas posições, quebra essa feita no primeiro
# caracter ":" que aparecer.
launch = name[1] if len(name) == 2 else "launch"
# launch recebe a segunda posicao da linta name, se ela contiver
# duas posicoes, se não, ele recebe a string "launch".
name = name[0]
# name recebe a string da primeira posicao da lista name.
name, module, members = modules[name]
# Pega os elementos de modules na chave name e atribui às variáveis
# simultaneamente. (Atribuição multipla)
if launch in members: # Se launch estiver em members
f = members[launch]
# atribui o mendo com a chave saunch à f
# We explicitly test for a function and not an arbitrary callable.
# Testamos explicitamente para uma função e não um arbitrário callable.
if type(f) is not types.FunctionType: # Se f não for uma função
print(launch, "in", name,
"isn't a function!") # Diz não é uma função
return False # Retorna falso
if getattr(f, '_pox_eval_args', False):
# Verifica se o metodo '_pox_eval_args' existe em f.
import ast
'''
O módulo ast ajuda aplicações Python para processar árvores do Python
sintaxe abstrata gramática. A própria sintaxe abstrata pode mudar com
cada versão Python; Este módulo ajuda a descobrir programaticamente
o que a gramática atual se parece.
'''
for k, v in params.items(): # Declarado na linha 267
# Copia a chave -> k e o valor -> v das posições do dicionario params.
if isinstance(v, str):
# Se o objeto v é da classe string.
try:
params[k] = ast.literal_eval(v)
# Verifica se o valor de v é código python
except:
# Leave it as a string
pass
multi = False
if f.__code__.co_argcount > 0: # Se a função f receber algum argumento.
# FIXME: This code doesn't look quite right to me and may be broken
# in some cases. We should refactor to use inspect anyway,
# which should hopefully just fix it.
'''
FIXME: Esse código não parece muito bem para mim e pode ser quebrado em alguns
casos. Nós devemos refatorar para uso de qualquer forma, inspecionar
que esperemos que deve apenas corrigi-lo.
'''
if (f.__code__.co_varnames[f.__code__.co_argcount -
1] == '__INSTANCE__'):
# It's a multi-instance-aware component.
# É um componente de reconhecimento de instância de multipla.
multi = True
# Special __INSTANCE__ paramter gets passed a tuple with:
# 1. The number of this instance (0...n-1)
# 2. The total number of instances for this module
# 3. True if this is the last instance, False otherwise
# The last is just a comparison between #1 and #2, but it's
# convenient.
# Parâmetro especial __INSTANCE__ é passado uma tupla com:
# 1. O numero da instancia(0...n-1)
# O total de instancias deste módulo.
# 3. True se esta for a ultima instancia, False so não.
# O último é apenas uma comparação entre o #1 e #2, mas é conveniente.
params['__INSTANCE__'] = (inst[cname],
len(components[cname]),
inst[cname] + 1 == len(
components[cname]))
if multi == False and len(components[cname]) != 1:
# Verifica se existe mais de um objeto de multi.
print(name, "does not accept multiple instances")
return False
# Cansei... Vou pular isso... Fllw
try:
if f(**params) is False:
# Abort startup
return False
except TypeError as exc:
instText = ''
if inst[cname] > 0:
instText = "instance {0} of ".format(inst[cname] + 1)
print("Error executing {2}{0}.{1}:".format(
name, launch, instText))
if inspect.currentframe() is sys.exc_info()[2].tb_frame:
# Error is with calling the function
# Try to give some useful feedback
if _options.verbose:
traceback.print_exc()
else:
exc = sys.exc_info()[0:2]
print(''.join(traceback.format_exception_only(*exc)),
end='')
print()
EMPTY = "<Unspecified>"
code = f.__code__
argcount = code.co_argcount
argnames = code.co_varnames[:argcount]
defaults = list((f.func_defaults) or [])
defaults = [EMPTY] * (argcount - len(defaults)) + defaults
args = {}
for n, a in enumerate(argnames):
args[a] = [EMPTY, EMPTY]
if n < len(defaults):
args[a][0] = defaults[n]
if a in params:
args[a][1] = params[a]
del params[a]
if '__INSTANCE__' in args:
del args['__INSTANCE__']
if f.__doc__ is not None:
print("Documentation for {0}:".format(name))
doc = f.__doc__.split("\n")
# TODO: only strip the same leading space as was on the first
# line
doc = map(str.strip, doc)
print('', ("\n ".join(doc)).strip())
# print(params)
# print(args)
print("Parameters for {0}:".format(name))
if len(args) == 0:
print(" None.")
else:
print(" {0:25} {1:25} {2:25}".format(
"Name", "Default", "Active"))
print(" {0:25} {0:25} {0:25}".format("-" * 15))
for k, v in args.iteritems():
print(" {0:25} {1:25} {2:25}".format(
k, str(v[0]),
str(v[1] if v[1] is not EMPTY else v[0])))
if len(params):
print(
"This component does not have a parameter named " +
"'{0}'.".format(params.keys()[0]))
return False
missing = [
k for k, x in args.iteritems()
if x[1] is EMPTY and x[0] is EMPTY
]
if len(missing):
print("You must specify a value for the '{0}' "
"parameter.".format(missing[0]))
return False
return False
else:
# Error is inside the function
raise
elif len(params) > 0 or launch is not "launch":
print("Module %s has no %s(), but it was specified or passed " \
"arguments" % (name, launch))
return False
return True