# WPA2-Enterprise PMKSA caching tests # Copyright (c) 2013, Jouni Malinen # # This software may be distributed under the terms of the BSD license. # See README for more details. import logging logger = logging.getLogger() import time import hostapd def test_pmksa_cache_on_roam_back(dev, apdev): """PMKSA cache to skip EAP on reassociation back to same AP""" params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") hostapd.add_ap(apdev[0]['ifname'], params) bssid = apdev[0]['bssid'] dev[0].connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP", eap="GPSK", identity="gpsk user", password="abcdefghijklmnop0123456789abcdef", scan_freq="2412") pmksa = dev[0].get_pmksa(bssid) if pmksa is None: raise Exception("No PMKSA cache entry created") if pmksa['opportunistic'] != '0': raise Exception("Unexpected opportunistic PMKSA cache entry") hostapd.add_ap(apdev[1]['ifname'], params) bssid2 = apdev[1]['bssid'] dev[0].dump_monitor() logger.info("Roam to AP2") dev[0].scan(freq="2412") dev[0].request("ROAM " + bssid2) ev = dev[0].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=10) if ev is None: raise Exception("EAP success timed out") ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=10) if ev is None: raise Exception("Roaming with the AP timed out") pmksa2 = dev[0].get_pmksa(bssid2) if pmksa2 is None: raise Exception("No PMKSA cache entry found") if pmksa2['opportunistic'] != '0': raise Exception("Unexpected opportunistic PMKSA cache entry") dev[0].dump_monitor() logger.info("Roam back to AP1") dev[0].scan(freq="2412") dev[0].request("ROAM " + bssid) ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED", "CTRL-EVENT-CONNECTED"], timeout=10) if ev is None: raise Exception("Roaming with the AP timed out") if "CTRL-EVENT-EAP-STARTED" in ev: raise Exception("Unexpected EAP exchange") pmksa1b = dev[0].get_pmksa(bssid) if pmksa1b is None: raise Exception("No PMKSA cache entry found") if pmksa['pmkid'] != pmksa1b['pmkid']: raise Exception("Unexpected PMKID change for AP1") def test_pmksa_cache_opportunistic_only_on_sta(dev, apdev): """Opportunistic PMKSA caching enabled only on station""" params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") hostapd.add_ap(apdev[0]['ifname'], params) bssid = apdev[0]['bssid'] dev[0].connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP", eap="GPSK", identity="gpsk user", password="abcdefghijklmnop0123456789abcdef", okc=True, scan_freq="2412") pmksa = dev[0].get_pmksa(bssid) if pmksa is None: raise Exception("No PMKSA cache entry created") if pmksa['opportunistic'] != '0': raise Exception("Unexpected opportunistic PMKSA cache entry") hostapd.add_ap(apdev[1]['ifname'], params) bssid2 = apdev[1]['bssid'] dev[0].dump_monitor() logger.info("Roam to AP2") dev[0].scan(freq="2412") dev[0].request("ROAM " + bssid2) ev = dev[0].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=10) if ev is None: raise Exception("EAP success timed out") ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=10) if ev is None: raise Exception("Roaming with the AP timed out") pmksa2 = dev[0].get_pmksa(bssid2) if pmksa2 is None: raise Exception("No PMKSA cache entry found") if pmksa2['opportunistic'] != '0': raise Exception("Unexpected opportunistic PMKSA cache entry") dev[0].dump_monitor() logger.info("Roam back to AP1") dev[0].scan(freq="2412") dev[0].request("ROAM " + bssid) ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED", "CTRL-EVENT-CONNECTED"], timeout=10) if ev is None: raise Exception("Roaming with the AP timed out") if "CTRL-EVENT-EAP-STARTED" in ev: raise Exception("Unexpected EAP exchange") pmksa1b = dev[0].get_pmksa(bssid) if pmksa1b is None: raise Exception("No PMKSA cache entry found") if pmksa['pmkid'] != pmksa1b['pmkid']: raise Exception("Unexpected PMKID change for AP1") def test_pmksa_cache_opportunistic(dev, apdev): """Opportunistic PMKSA caching""" params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") params['okc'] = "1" hostapd.add_ap(apdev[0]['ifname'], params) bssid = apdev[0]['bssid'] dev[0].connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP", eap="GPSK", identity="gpsk user", password="abcdefghijklmnop0123456789abcdef", okc=True, scan_freq="2412") pmksa = dev[0].get_pmksa(bssid) if pmksa is None: raise Exception("No PMKSA cache entry created") if pmksa['opportunistic'] != '0': raise Exception("Unexpected opportunistic PMKSA cache entry") hostapd.add_ap(apdev[1]['ifname'], params) bssid2 = apdev[1]['bssid'] dev[0].dump_monitor() logger.info("Roam to AP2") dev[0].scan(freq="2412") dev[0].request("ROAM " + bssid2) ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED", "CTRL-EVENT-CONNECTED"], timeout=10) if ev is None: raise Exception("Roaming with the AP timed out") if "CTRL-EVENT-EAP-STARTED" in ev: raise Exception("Unexpected EAP exchange") pmksa2 = dev[0].get_pmksa(bssid2) if pmksa2 is None: raise Exception("No PMKSA cache entry created") dev[0].dump_monitor() logger.info("Roam back to AP1") dev[0].scan(freq="2412") dev[0].request("ROAM " + bssid) ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED", "CTRL-EVENT-CONNECTED"], timeout=10) if ev is None: raise Exception("Roaming with the AP timed out") if "CTRL-EVENT-EAP-STARTED" in ev: raise Exception("Unexpected EAP exchange") pmksa1b = dev[0].get_pmksa(bssid) if pmksa1b is None: raise Exception("No PMKSA cache entry found") if pmksa['pmkid'] != pmksa1b['pmkid']: raise Exception("Unexpected PMKID change for AP1") def test_pmksa_cache_expiration(dev, apdev): """PMKSA cache entry expiration""" params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") hostapd.add_ap(apdev[0]['ifname'], params) bssid = apdev[0]['bssid'] dev[0].request("SET dot11RSNAConfigPMKLifetime 10") dev[0].connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP", eap="GPSK", identity="gpsk user", password="abcdefghijklmnop0123456789abcdef", scan_freq="2412") pmksa = dev[0].get_pmksa(bssid) if pmksa is None: raise Exception("No PMKSA cache entry created") logger.info("Wait for PMKSA cache entry to expire") ev = dev[0].wait_event(["WPA: Key negotiation completed", "CTRL-EVENT-DISCONNECTED"], timeout=15) if ev is None: raise Exception("No EAP reauthentication seen") if "CTRL-EVENT-DISCONNECTED" in ev: raise Exception("Unexpected disconnection") pmksa2 = dev[0].get_pmksa(bssid) if pmksa['pmkid'] == pmksa2['pmkid']: raise Exception("PMKID did not change") def test_pmksa_cache_and_cui(dev, apdev): """PMKSA cache and Chargeable-User-Identity""" params = hostapd.wpa2_eap_params(ssid="cui") params['radius_request_cui'] = '1' params['acct_server_addr'] = "127.0.0.1" params['acct_server_port'] = "1813" params['acct_server_shared_secret'] = "radius" hostapd.add_ap(apdev[0]['ifname'], params) bssid = apdev[0]['bssid'] dev[0].connect("cui", proto="RSN", key_mgmt="WPA-EAP", eap="GPSK", identity="gpsk-cui", password="abcdefghijklmnop0123456789abcdef", scan_freq="2412") pmksa = dev[0].get_pmksa(bssid) if pmksa is None: raise Exception("No PMKSA cache entry created") dev[0].dump_monitor() logger.info("Disconnect and reconnect to the same AP") dev[0].request("DISCONNECT") dev[0].request("RECONNECT") ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED", "CTRL-EVENT-CONNECTED"], timeout=10) if ev is None: raise Exception("Reconnect timed out") if "CTRL-EVENT-EAP-STARTED" in ev: raise Exception("Unexpected EAP exchange") pmksa1b = dev[0].get_pmksa(bssid) if pmksa1b is None: raise Exception("No PMKSA cache entry found") if pmksa['pmkid'] != pmksa1b['pmkid']: raise Exception("Unexpected PMKID change for AP1") dev[0].request("REAUTHENTICATE") ev = dev[0].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=10) if ev is None: raise Exception("EAP success timed out") for i in range(0, 20): state = dev[0].get_status_field("wpa_state") if state == "COMPLETED": break time.sleep(0.1) if state != "COMPLETED": raise Exception("Reauthentication did not complete")