def listen(self):
"""
Listen for incoming service requests and provide as necessary.
"""
self.init_sockets()
self.dnsmasq = pwifi_dnsmasq.DnsmasqCTRL()
self.dnsmasq.start()
self.webserver = sofi_web.sofi_web(self.database,self.stateIndex)
while True:
logging.info("Waiting for messages...")
data, addr = self.receive_msg()
s = addr
if s is None:
s = "hostapd"
logging.info("Received message from %s: %s" % (s, data))
split_data = data.split()
ssid = split_data[-1]
request = split_data[0]
source_address = sofi_iftools.sanitizeMac(split_data[1]) #source_address MAC
# Requests from legacy clients only contain the request keyword
# and SSID. Requests from hostapd provide the IP address which
# will be used for the BSS as well.
ip = None
if len(split_data) == 4:
ip = split_data[2]
if(sofi_ssid.isSofiSSID(ssid)):
ssidObject = sofi_ssid.ssid(SSID=ssid)
if request == IPC.PWIFI_IPC_REQUEST:
reply = self.handle_request(ssidObject,source_address, ip=ip)
if len(reply) != 0:
if addr is None:
logging.info("Sending reply to hostapd: %s" %reply)
logging.info("Hex encoded reply: %s" %(sofi_crypt.hex(reply)))
self.sock_hostapd.sendto(reply, IPC.PWIFI_HOSTAPD_INTERFACE)
else:
logging.info("Sending reply to legacy client " + addr)
self.sock_legacy.sendto(reply, addr)
else:
logging.info("Empty reply. Not sending a reply.")
elif request == IPC.PWIFI_IPC_DISBAND:
reply = self.handle_disband(ssidObject,source_address)
# hostapd does not expect a reply on disband messages -> reply is empty String
else:
logging.error("Invalid message format. Ignored: %s" %data)
continue
else:
logging.error("Not a valid SSID! Ignored!")
continue
def _remove_old_nets(self):
"""
Removing old networks in order to clean up the network list.
Speeds up the scanning and looks nicer.
"""
networks = self.wpa.wpa_supplicant_list_networks()
netlist = networks.split('\n')
for item in netlist:
item = item.split()
if (len(item) < 2):
break
if (sofi_ssid.isSofiSSID(item[1])):
self.wpa.wpa_supplicant_remove_net(item[0])
def _remove_old_nets(self):
"""
Removing old networks in order to clean up the network list.
Speeds up the scanning and looks nicer.
"""
networks = self.wpa.wpa_supplicant_list_networks()
netlist = networks.split('\n')
for item in netlist:
item = item.split()
if(len(item)<2):
break
if(sofi_ssid.isSofiSSID(item[1])):
self.wpa.wpa_supplicant_remove_net(item[0])
def _eval_events(self, event):
event = event[3:].split()
if (event[0] == "CTRL-EVENT-BSS-ADDED"):
apList = self.wpa.wpa_supplicant_get_scan()
apList = apList.split('\n')
apList = apList[1:-1]
for line in apList:
item = line.split()
if (item[0] == event[2]):
if (len(item) < 5):
logging.error("Strange AP added: %s" % item)
return
logging.info("AP added: %s with SSID: %s" %
(item[0], item[4]))
if (sofi_ssid.isSofiSSID(item[4])
and (self.state == WAITING_FOR_RESPONSE
or self.state == ANSWERED_PUZZLE)):
ssid = sofi_ssid.ssid(SSID=item[4])
if (ssid.getID() == self.ComId):
logging.info(
"Received matching response with ComID: %s" %
self.ComId)
#This is a reply to a request we sent.
if (self.state == WAITING_FOR_RESPONSE):
logging.info(
"Waited for response and response received!"
)
self._stop_timeout()
self.endScanDiscoverTime = time.time()
solution = self._start_puzzle(ssid)
logging.info(
"Puzzle solved and setting up answer!")
self.wpa.wpa_supplicant_remove_net(self.nId)
self._start_connect(solution,
service=ssid.getService(),
private=ssid.isPrivate(),
password=self.request[0],
bitSize=ssid.getBitSize())
if (self.state == ANSWERED_PUZZLE):
logging.info(
"Answered puzzle and response received: connecting to Network!"
)
elif (event[0] == "CTRL-EVENT-CONNECTED"):
logging.debug("Connected event received: %s" % event)
if (event[7][4:] == self.nId):
if (self.state != CONNECTED):
logging.info("Connected to network!")
self._stop_timeout()
self.connectedBSSID = event[4]
self.ie = self._get_ie(self.connectedBSSID, ForceSSID=True)
self.end_time = time.time()
self.endConnectDiscover = self.end_time
if (IS_EVAL):
self.state = CONNECTED
return
while (self.ie == None):
time.sleep(DELAY)
self.lastScan = self.wpa.wpa_supplicant_get_scan()
self.ie = self._get_ie(self.connectedBSSID,
ForceSSID=True)
logging.info("Received IE: %s" % self.ie)
ie_ssid, ie_sofi = self._parse_ie(self.ie)
logging.info("Parsed IE: SSID: %s So-Fi: %s" %
(ie_ssid, ie_sofi))
self._eval_sofi_ie(ie_sofi)
self.state = CONNECTED
else:
logging.info("Reauth to Network with Id: %s" % self.nId)
else:
self.ie = self._get_ie(event[4], ForceSSID=False)
logging.info("Received IE: %s" % self.ie)
elif (event[0] == "CTRL-EVENT-DISCONNECTED"):
logging.debug("Disconnect event received: %s" % event)
if (self.state == CONNECTED):
bssid = event[1][6:]
logging.info("Disconnected from Network with BBSID: %s" %
bssid)
if (bssid == self.connectedBSSID):
logging.info("Disconnected from So-Fi Network!")
self.wpa.wpa_supplicant_remove_net(self.nId)
elif (event[0] == "CTRL-EVENT-SCAN-RESULTS"):
self.lastScan = self.wpa.wpa_supplicant_get_scan()
else:
logging.debug(event)
def _eval_events(self,event):
event = event[3:].split()
if(event[0]=="CTRL-EVENT-BSS-ADDED"):
apList = self.wpa.wpa_supplicant_get_scan()
apList = apList.split('\n')
apList = apList[1:-1]
for line in apList:
item = line.split()
if(item[0]==event[2]):
if(len(item)<5):
logging.error("Strange AP added: %s" %item)
return
logging.info("AP added: %s with SSID: %s" %(item[0],item[4]))
if(sofi_ssid.isSofiSSID(item[4]) and (self.state == WAITING_FOR_RESPONSE or self.state == ANSWERED_PUZZLE)):
ssid = sofi_ssid.ssid(SSID=item[4])
if(ssid.getID()==self.ComId):
logging.info("Received matching response with ComID: %s" %self.ComId)
#This is a reply to a request we sent.
if(self.state == WAITING_FOR_RESPONSE):
logging.info("Waited for response and response received!")
self._stop_timeout()
self.endScanDiscoverTime = time.time()
solution = self._start_puzzle(ssid)
logging.info("Puzzle solved and setting up answer!")
self.wpa.wpa_supplicant_remove_net(self.nId)
self._start_connect(solution, service=ssid.getService(), private=ssid.isPrivate(), password=self.request[0], bitSize=ssid.getBitSize())
if(self.state == ANSWERED_PUZZLE):
logging.info("Answered puzzle and response received: connecting to Network!")
elif(event[0]=="CTRL-EVENT-CONNECTED"):
logging.debug("Connected event received: %s" %event)
if(event[7][4:]==self.nId):
if(self.state != CONNECTED):
logging.info("Connected to network!")
self._stop_timeout()
self.connectedBSSID = event[4]
self.ie = self._get_ie(self.connectedBSSID,ForceSSID=True)
self.end_time = time.time()
self.endConnectDiscover = self.end_time
if(IS_EVAL):
self.state = CONNECTED
return
while(self.ie == None):
time.sleep(DELAY)
self.lastScan = self.wpa.wpa_supplicant_get_scan()
self.ie = self._get_ie(self.connectedBSSID,ForceSSID=True)
logging.info("Received IE: %s" %self.ie)
ie_ssid,ie_sofi = self._parse_ie(self.ie)
logging.info("Parsed IE: SSID: %s So-Fi: %s" %(ie_ssid,ie_sofi))
self._eval_sofi_ie(ie_sofi)
self.state = CONNECTED
else:
logging.info("Reauth to Network with Id: %s" %self.nId)
else:
self.ie = self._get_ie(event[4],ForceSSID=False)
logging.info("Received IE: %s" %self.ie)
elif(event[0]=="CTRL-EVENT-DISCONNECTED"):
logging.debug("Disconnect event received: %s" %event)
if(self.state == CONNECTED):
bssid = event[1][6:]
logging.info("Disconnected from Network with BBSID: %s" %bssid)
if(bssid == self.connectedBSSID):
logging.info("Disconnected from So-Fi Network!")
self.wpa.wpa_supplicant_remove_net(self.nId)
elif(event[0]=="CTRL-EVENT-SCAN-RESULTS"):
self.lastScan = self.wpa.wpa_supplicant_get_scan()
else:
logging.debug(event)