def print_switch_dpid(filter_dpid, packet_dpid):
"""
Confirm if filter_dpid is packet_dpid or any
"""
packet_dpid = clear_dpid(packet_dpid)
if filter_dpid in [packet_dpid, 'Any', 'any', 'ANY']:
return True
return False
def add_dpid_to_proxy_db(self, ip_addr, port, dpid):
"""
Receives the IP, TCP port and DPID and save them to the
proxy_db. IP and TCP port are the indexes.
Args:
ip_addr: IP address
port: TCP port
dpid: switch datapath id
"""
dpid = clear_dpid(dpid)
self.proxy_db[ip_addr, port] = self.get_datapath_name(dpid)
def dpid_filters(msg):
"""
Filter PacketIn and PacketOut messages based on DPID and ports
Sanitizer filter (-F), entry "filters", "packetIn_filter" or
"packetOut_filter"
If switch_dpid AND in_port are Any, don't filter (print it)
If switch_dpid OR in_port are NOT Any, print only what matches the
most specific (filter everything else)
Args:
msg: class OFMessage
Returns:
False: Don' filter packet (print it)
True: Filter it (don't print)
"""
# It has to be a PacketOut or PacketIn
if msg.ofp.header.message_type not in [10, 13]:
return False
# It has to be a LLDP packet
if not is_protocol(msg.ofp.data, lldp=True):
return False
try:
# If it is a PacketIn ...
if msg.ofp.header.message_type in [10]:
# It has to have a packetIn_filter filter
filters = Sanitizer().filters['packetIn_filter']
filter_port = filters['in_port']
# If it a PacketOut...
else:
# It has to have a packetOut_filter filter
filters = Sanitizer().filters['packetOut_filter']
filter_port = filters['out_port']
filter_dpid = filters['switch_dpid']
except KeyError:
return False
if not len(filters):
return False
# Was switch_dpid or in_port specified by user?
if filter_dpid in ['any', 'Any', 'ANY']:
if filter_port in ['any', 'Any', 'ANY']:
return False
# If we got here, it means we have content to avoid printing
print_it = False
lldp_msg = get_protocol(msg.ofp.data, lldp=True)
switch_dpid = clear_dpid(filter_dpid)
if print_switch_dpid(switch_dpid, lldp_msg.c_id):
if msg.ofp.header.message_type in [10]:
if print_port(filter_port, str(msg.ofp.in_port)):
print_it = True
else:
if print_port(filter_port, str(lldp_msg.p_id)):
print_it = True
if print_it:
return False
return True