def _handle_status_lvap(self, wtp, status):
"""Handle an incoming STATUS_LVAP message.
Args:
status, a STATUS_LVAP message
Returns:
None
"""
if not wtp.connection:
LOG.info("Status from disconnected WTP %s", wtp.addr)
return
sta = EtherAddress(status.sta)
set_mask = bool(status.flags.set_mask)
lvap = None
accum = []
incoming_ssids = [SSID(x.ssid) for x in status.ssids]
accum.append("addr ")
accum.append(EtherAddress(status.sta).to_str())
accum.append(" net_bssid ")
accum.append(EtherAddress(status.net_bssid).to_str())
accum.append(" lvap_bssid ")
accum.append(EtherAddress(status.lvap_bssid).to_str())
accum.append(" ssid ")
if incoming_ssids[0]:
accum.append(incoming_ssids[0].to_str())
else:
accum.append("None")
accum.append(" ssids [")
for ssid in incoming_ssids[1:]:
accum.append(" ")
accum.append(ssid.to_str())
accum.append(" ]")
accum.append(" assoc_id ")
accum.append(str(status.assoc_id))
if bool(status.flags.authenticated):
accum.append(" AUTH")
if bool(status.flags.associated):
accum.append(" ASSOC")
LOG.info("LVAP status %s", ''.join(accum))
# If the LVAP does not exists, then create a new one
if sta not in RUNTIME.lvaps:
net_bssid_addr = EtherAddress(status.net_bssid)
lvap_bssid_addr = EtherAddress(status.lvap_bssid)
lvap = LVAP(sta, net_bssid_addr, lvap_bssid_addr)
RUNTIME.lvaps[sta] = lvap
lvap = RUNTIME.lvaps[sta]
# Check if block is valid
incoming = ResourceBlock(wtp, EtherAddress(status.hwaddr),
status.channel, status.band)
valid = [block for block in wtp.supports if block == incoming]
if not valid:
LOG.warning("No valid intersection found. Removing block.")
wtp.connection.send_del_lvap(lvap)
return
# this will try to updated the lvap object with the resource block
# coming in this status update message.
try:
if set_mask:
# set downlink+uplink block
lvap._downlink.setitem(valid[0], RadioPort(lvap, valid[0]))
else:
# set uplink only blocks
lvap._uplink.setitem(valid[0], RadioPort(lvap, valid[0]))
except Exception as e:
LOG.exception(e)
LOG.error("Error while importing block %s, removing.", valid[0])
wtp.connection.send_del_lvap(lvap)
return
# update LVAP ports
lvap.ports[0] = VirtualPortLvap(phy_port=wtp.port(),
virtual_port_id=0,
lvap=lvap)
# set supported band
lvap.supported_band = status.supported_band
# update LVAP params
lvap.authentication_state = bool(status.flags.authenticated)
lvap.association_state = bool(status.flags.associated)
lvap._assoc_id = status.assoc_id
lvap._encap = EtherAddress(status.encap)
ssids = [SSID(x.ssid) for x in status.ssids]
# update ssid
if lvap.ssid:
# Raise LVAP leave event
self.server.send_lvap_leave_message_to_self(lvap)
# removing LVAP from tenant, need first to look for right tenant
if lvap.addr in lvap.tenant.lvaps:
LOG.info("Removing %s from tenant %s", lvap.addr, lvap.ssid)
del lvap.tenant.lvaps[lvap.addr]
lvap._tenant = None
# update remaining ssids
lvap._ssids = ssids[1:]
if ssids[0]:
tenant = RUNTIME.load_tenant(ssids[0])
if not tenant:
LOG.info("LVAP %s from unknown tenant %s", lvap.addr, ssids[0])
RUNTIME.remove_lvap(lvap.addr)
return
# setting tenant without seding out add lvap message
lvap._tenant = tenant
# adding LVAP to tenant
LOG.info("Adding %s to tenant %s", lvap.addr, ssids[0])
lvap.tenant.lvaps[lvap.addr] = lvap
# Raise LVAP join event
self.server.send_lvap_join_message_to_self(lvap)
def _handle_probe_request(self, wtp, request):
"""Handle an incoming PROBE_REQUEST message.
Args:
request, a PROBE_REQUEST message
Returns:
None
"""
# Check if block is valid
valid = wtp.get_block(request.hwaddr, request.channel, request.band)
if not valid:
self.log.warning("No valid intersection found. Ignoring request.")
return
# check is station is in ACL
sta = EtherAddress(request.sta)
if not RUNTIME.is_allowed(sta):
return
# Requested BSSID
incoming_ssid = SSID(request.ssid)
if incoming_ssid == b'':
self.log.info("Probe request from %s ssid %s", sta, "Broadcast")
else:
self.log.info("Probe request from %s ssid %s", sta, incoming_ssid)
# generate list of available networks
networks = list()
for tenant in RUNTIME.tenants.values():
if tenant.bssid_type == T_TYPE_SHARED:
continue
for wtp_in_tenant in tenant.wtps.values():
if wtp.addr == wtp_in_tenant.addr:
bssid = tenant.generate_bssid(sta)
ssid = tenant.tenant_name
networks.append((bssid, ssid))
if not networks:
self.log.info("No Networks available at this WTP")
return
# If lvap does not exist then create it. Otherwise just refresh list
# of networks
if sta not in RUNTIME.lvaps:
# spawn new LVAP
self.log.info("Spawning new LVAP %s on %s", sta, wtp.addr)
assoc_id = RUNTIME.assoc_id()
lvap = LVAP(sta, assoc_id=assoc_id)
lvap.networks = networks
lvap.supported_band = request.supported_band
# this will trigger an LVAP ADD message
lvap.blocks = valid[0]
# save LVAP in the runtime
RUNTIME.lvaps[sta] = lvap
# Send probe response
self.send_probe_response(lvap, incoming_ssid)
return
# Update networks
lvap = RUNTIME.lvaps[sta]
lvap.networks = networks
lvap.commit()
# Send probe response
if lvap.wtp == wtp:
self.send_probe_response(lvap, incoming_ssid)
def _handle_probe_request(self, wtp, request):
"""Handle an incoming PROBE_REQUEST message.
Args:
request, a PROBE_REQUEST message
Returns:
None
"""
if not wtp.connection:
LOG.info("Probe request from disconnected WTP %s", wtp.addr)
self.stream.close()
return
if not wtp.port():
LOG.info("WTP %s not ready", wtp.addr)
return
sta = EtherAddress(request.sta)
if sta in RUNTIME.lvaps:
return
if not RUNTIME.is_allowed(sta):
return
if RUNTIME.is_denied(sta):
return
ssid = SSID(request.ssid)
if request.ssid == b'':
LOG.info("Probe request from %s ssid %s", sta, "Broadcast")
else:
LOG.info("Probe request from %s ssid %s", sta, ssid)
# generate list of available SSIDs
ssids = set()
for tenant in RUNTIME.tenants.values():
if tenant.bssid_type == T_TYPE_SHARED:
continue
for wtp_in_tenant in tenant.wtps.values():
if wtp.addr == wtp_in_tenant.addr:
ssids.add(tenant.tenant_name)
if not ssids:
LOG.info("No SSIDs available at this WTP")
return
# spawn new LVAP
LOG.info("Spawning new LVAP %s on %s", sta, wtp.addr)
net_bssid = generate_bssid(BASE_MAC, sta)
lvap = LVAP(sta, net_bssid, net_bssid)
lvap.set_ssids(list(ssids))
# set supported band
lvap.supported_band = request.supported_band
# Check if block is valid
incoming = ResourceBlock(wtp, EtherAddress(request.hwaddr),
request.channel, request.band)
valid = [block for block in wtp.supports if block == incoming]
if not valid:
LOG.warning("No valid intersection found. Ignoring request.")
return
# This will trigger an LVAP ADD message (and REMOVE if necessary)
lvap.blocks = valid[0]
# save LVAP in the runtime
RUNTIME.lvaps[sta] = lvap
LOG.info("Sending probe response to %s", lvap.addr)
self.send_probe_response(lvap, ssid)
