# WPA2-Enterprise PMKSA caching tests # Copyright (c) 2013-2014, 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 subprocess import time import hostapd from wpasupplicant import WpaSupplicant from utils import alloc_fail from test_ap_eap import eap_connect 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") # It can take some time for the second AP to become ready to reply to Probe # Request frames especially under heavy CPU load, so allow couple of rounds # of scanning to avoid reporting errors incorrectly just because of scans # not having seen the target AP. for i in range(0, 10): dev[0].scan(freq="2412") if dev[0].get_bss(bssid2) is not None: break logger.info("Scan again to find target AP") 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") dev[0].wait_connected(timeout=10, error="Roaming 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") dev[0].dump_monitor() if "FAIL" in dev[0].request("PMKSA_FLUSH"): raise Exception("PMKSA_FLUSH failed") if dev[0].get_pmksa(bssid) is not None or dev[0].get_pmksa(bssid2) is not None: raise Exception("PMKSA_FLUSH did not remove PMKSA entries") dev[0].wait_disconnected(timeout=5) dev[0].wait_connected(timeout=15, error="Reconnection timed out") def test_pmksa_cache_and_reauth(dev, apdev): """PMKSA caching and EAPOL reauthentication""" params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") hapd = 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") hostapd.add_ap(apdev[1]['ifname'], params) bssid2 = apdev[1]['bssid'] dev[0].dump_monitor() logger.info("Roam to AP2") # It can take some time for the second AP to become ready to reply to Probe # Request frames especially under heavy CPU load, so allow couple of rounds # of scanning to avoid reporting errors incorrectly just because of scans # not having seen the target AP. for i in range(0, 10): dev[0].scan(freq="2412") if dev[0].get_bss(bssid2) is not None: break logger.info("Scan again to find target AP") 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") dev[0].wait_connected(timeout=10, error="Roaming timed out") 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") # Verify EAPOL reauthentication after PMKSA caching hapd.request("EAPOL_REAUTH " + dev[0].own_addr()) ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED"], timeout=5) if ev is None: raise Exception("EAP authentication did not start") ev = dev[0].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=5) if ev is None: raise Exception("EAP authentication did not succeed") 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") dev[0].wait_connected(timeout=10, error="Roaming 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_opportunistic_connect(dev, apdev): """Opportunistic PMKSA caching with connect API""" params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") params['okc'] = "1" hostapd.add_ap(apdev[0]['ifname'], params) bssid = apdev[0]['bssid'] wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5') wpas.interface_add("wlan5", drv_params="force_connect_cmd=1") wpas.connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP", eap="GPSK", identity="gpsk user", password="abcdefghijklmnop0123456789abcdef", okc=True, scan_freq="2412") pmksa = wpas.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'] wpas.dump_monitor() logger.info("Roam to AP2") wpas.scan_for_bss(bssid2, freq="2412", force_scan=True) wpas.request("ROAM " + bssid2) ev = wpas.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 = wpas.get_pmksa(bssid2) if pmksa2 is None: raise Exception("No PMKSA cache entry created") wpas.dump_monitor() logger.info("Roam back to AP1") wpas.scan(freq="2412") wpas.request("ROAM " + bssid) ev = wpas.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 = wpas.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_expiration_disconnect(dev, apdev): """PMKSA cache entry expiration (disconnect)""" params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") hapd = hostapd.add_ap(apdev[0]['ifname'], params) bssid = apdev[0]['bssid'] dev[0].request("SET dot11RSNAConfigPMKLifetime 2") dev[0].request("SET dot11RSNAConfigPMKReauthThreshold 100") 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") hapd.request("SET auth_server_shared_secret incorrect") 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" not in ev: raise Exception("Missing disconnection") hapd.request("SET auth_server_shared_secret radius") ev = dev[0].wait_event(["WPA: Key negotiation completed"], timeout=15) if ev is None: raise Exception("No EAP reauthentication seen") 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" hapd = 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") ev = hapd.wait_event([ "AP-STA-CONNECTED" ], timeout=5) if ev is None: raise Exception("No connection event received from hostapd") dev[0].dump_monitor() logger.info("Disconnect and reconnect to the same AP") dev[0].request("DISCONNECT") dev[0].wait_disconnected() 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") def test_pmksa_cache_preauth(dev, apdev): """RSN pre-authentication to generate PMKSA cache entry""" try: params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap") params['bridge'] = 'ap-br0' hostapd.add_ap(apdev[0]['ifname'], params) subprocess.call(['brctl', 'setfd', 'ap-br0', '0']) subprocess.call(['ip', 'link', 'set', 'dev', 'ap-br0', 'up']) eap_connect(dev[0], apdev[0], "PAX", "pax.user@example.com", password_hex="0123456789abcdef0123456789abcdef") params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap") params['bridge'] = 'ap-br0' params['rsn_preauth'] = '1' params['rsn_preauth_interfaces'] = 'ap-br0' hostapd.add_ap(apdev[1]['ifname'], params) bssid1 = apdev[1]['bssid'] dev[0].scan(freq="2412") success = False status_seen = False for i in range(0, 50): if not status_seen: status = dev[0].request("STATUS") if "Pre-authentication EAPOL state machines:" in status: status_seen = True time.sleep(0.1) pmksa = dev[0].get_pmksa(bssid1) if pmksa: success = True break if not success: raise Exception("No PMKSA cache entry created from pre-authentication") if not status_seen: raise Exception("Pre-authentication EAPOL status was not available") dev[0].scan(freq="2412") if "[WPA2-EAP-CCMP-preauth]" not in dev[0].request("SCAN_RESULTS"): raise Exception("Scan results missing RSN element info") dev[0].request("ROAM " + bssid1) 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(bssid1) if pmksa2 is None: raise Exception("No PMKSA cache entry") if pmksa['pmkid'] != pmksa2['pmkid']: raise Exception("Unexpected PMKID change") finally: subprocess.call(['ip', 'link', 'set', 'dev', 'ap-br0', 'down']) subprocess.call(['brctl', 'delbr', 'ap-br0']) def test_pmksa_cache_preauth_vlan_enabled(dev, apdev): """RSN pre-authentication to generate PMKSA cache entry (dynamic_vlan optional but station without VLAN set)""" try: params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap") params['bridge'] = 'ap-br0' params['dynamic_vlan'] = '1' hostapd.add_ap(apdev[0]['ifname'], params) subprocess.call(['brctl', 'setfd', 'ap-br0', '0']) subprocess.call(['ip', 'link', 'set', 'dev', 'ap-br0', 'up']) eap_connect(dev[0], apdev[0], "PAX", "pax.user@example.com", password_hex="0123456789abcdef0123456789abcdef") params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap") params['bridge'] = 'ap-br0' params['rsn_preauth'] = '1' params['rsn_preauth_interfaces'] = 'ap-br0' params['dynamic_vlan'] = '1' hostapd.add_ap(apdev[1]['ifname'], params) bssid1 = apdev[1]['bssid'] dev[0].scan(freq="2412") success = False status_seen = False for i in range(0, 50): if not status_seen: status = dev[0].request("STATUS") if "Pre-authentication EAPOL state machines:" in status: status_seen = True time.sleep(0.1) pmksa = dev[0].get_pmksa(bssid1) if pmksa: success = True break if not success: raise Exception("No PMKSA cache entry created from pre-authentication") if not status_seen: raise Exception("Pre-authentication EAPOL status was not available") dev[0].scan(freq="2412") if "[WPA2-EAP-CCMP-preauth]" not in dev[0].request("SCAN_RESULTS"): raise Exception("Scan results missing RSN element info") dev[0].request("ROAM " + bssid1) 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(bssid1) if pmksa2 is None: raise Exception("No PMKSA cache entry") if pmksa['pmkid'] != pmksa2['pmkid']: raise Exception("Unexpected PMKID change") finally: subprocess.call(['ip', 'link', 'set', 'dev', 'ap-br0', 'down']) subprocess.call(['brctl', 'delbr', 'ap-br0']) def test_pmksa_cache_preauth_vlan_used(dev, apdev): """RSN pre-authentication to generate PMKSA cache entry (station with VLAN set)""" try: subprocess.call(['brctl', 'addbr', 'brvlan1']) subprocess.call(['brctl', 'setfd', 'brvlan1', '0']) params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap") params['bridge'] = 'ap-br0' params['dynamic_vlan'] = '1' params['vlan_file'] = 'hostapd.wlan3.vlan' hapd = hostapd.add_ap(apdev[0]['ifname'], params) subprocess.call(['brctl', 'setfd', 'ap-br0', '0']) subprocess.call(['ip', 'link', 'set', 'dev', 'ap-br0', 'up']) eap_connect(dev[0], apdev[0], "PAX", "vlan1", password_hex="0123456789abcdef0123456789abcdef") params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap") params['bridge'] = 'ap-br0' params['rsn_preauth'] = '1' params['rsn_preauth_interfaces'] = 'brvlan1' params['dynamic_vlan'] = '1' params['vlan_file'] = 'hostapd.wlan4.vlan' hostapd.add_ap(apdev[1]['ifname'], params) bssid1 = apdev[1]['bssid'] dev[0].scan(freq="2412") success = False status_seen = False for i in range(0, 50): if not status_seen: status = dev[0].request("STATUS") if "Pre-authentication EAPOL state machines:" in status: status_seen = True time.sleep(0.1) pmksa = dev[0].get_pmksa(bssid1) if pmksa: success = True break if not success: raise Exception("No PMKSA cache entry created from pre-authentication") if not status_seen: raise Exception("Pre-authentication EAPOL status was not available") dev[0].scan(freq="2412") if "[WPA2-EAP-CCMP-preauth]" not in dev[0].request("SCAN_RESULTS"): raise Exception("Scan results missing RSN element info") dev[0].request("ROAM " + bssid1) 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(bssid1) if pmksa2 is None: raise Exception("No PMKSA cache entry") if pmksa['pmkid'] != pmksa2['pmkid']: raise Exception("Unexpected PMKID change") # Disconnect the STA from both APs to avoid forceful ifdown by the # test script on a VLAN that this has an associated STA. That used to # trigger a mac80211 warning. dev[0].request("DISCONNECT") hapd.request("DISABLE") finally: subprocess.call(['ip', 'link', 'set', 'dev', 'ap-br0', 'down'], stderr=open('/dev/null', 'w')) subprocess.call(['ip', 'link', 'set', 'dev', 'brvlan1', 'down']) subprocess.call(['ip', 'link', 'set', 'dev', 'wlan3.1', 'down'], stderr=open('/dev/null', 'w')) subprocess.call(['ip', 'link', 'set', 'dev', 'wlan4.1', 'down'], stderr=open('/dev/null', 'w')) subprocess.call(['brctl', 'delif', 'brvlan1', 'wlan3.1'], stderr=open('/dev/null', 'w')) subprocess.call(['brctl', 'delif', 'brvlan1', 'wlan4.1'], stderr=open('/dev/null', 'w')) subprocess.call(['brctl', 'delbr', 'ap-br0'], stderr=open('/dev/null', 'w')) subprocess.call(['brctl', 'delbr', 'brvlan1']) def test_pmksa_cache_disabled(dev, apdev): """PMKSA cache disabling on AP""" params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") params['disable_pmksa_caching'] = '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", scan_freq="2412") hostapd.add_ap(apdev[1]['ifname'], params) bssid2 = apdev[1]['bssid'] dev[0].dump_monitor() logger.info("Roam to AP2") dev[0].scan_for_bss(bssid2, 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") dev[0].wait_connected(timeout=10, error="Roaming timed out") 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=20) if ev is None: raise Exception("Roaming with the AP timed out") if "CTRL-EVENT-CONNECTED" in ev: raise Exception("EAP exchange missing") ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=20) if ev is None: raise Exception("Roaming with the AP timed out") def test_pmksa_cache_ap_expiration(dev, apdev): """PMKSA cache entry expiring on AP""" params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") hapd = 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-session-timeout", password="abcdefghijklmnop0123456789abcdef", scan_freq="2412") ev = hapd.wait_event([ "AP-STA-CONNECTED" ], timeout=5) if ev is None: raise Exception("No connection event received from hostapd") dev[0].request("DISCONNECT") time.sleep(5) dev[0].dump_monitor() dev[0].request("RECONNECT") ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED", "CTRL-EVENT-CONNECTED"], timeout=20) if ev is None: raise Exception("Roaming with the AP timed out") if "CTRL-EVENT-CONNECTED" in ev: raise Exception("EAP exchange missing") dev[0].wait_connected(timeout=20, error="Reconnect timed out") dev[0].dump_monitor() dev[0].wait_disconnected(timeout=20) dev[0].wait_connected(timeout=20, error="Reassociation timed out") def test_pmksa_cache_multiple_sta(dev, apdev): """PMKSA cache with multiple stations""" 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-session-timeout", password="abcdefghijklmnop0123456789abcdef", scan_freq="2412") dev[1].connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP", eap="GPSK", identity="gpsk user", password="abcdefghijklmnop0123456789abcdef", scan_freq="2412") dev[2].connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP", eap="GPSK", identity="gpsk-user-session-timeout", password="abcdefghijklmnop0123456789abcdef", scan_freq="2412") wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5') wpas.interface_add("wlan5") wpas.connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP", eap="GPSK", identity="gpsk user", password="abcdefghijklmnop0123456789abcdef", scan_freq="2412") hostapd.add_ap(apdev[1]['ifname'], params) bssid2 = apdev[1]['bssid'] logger.info("Roam to AP2") for sta in [ dev[1], dev[0], dev[2], wpas ]: sta.dump_monitor() sta.scan_for_bss(bssid2, freq="2412") sta.request("ROAM " + bssid2) ev = sta.wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=10) if ev is None: raise Exception("EAP success timed out") sta.wait_connected(timeout=10, error="Roaming timed out") logger.info("Roam back to AP1") for sta in [ dev[1], wpas, dev[0], dev[2] ]: sta.dump_monitor() sta.scan(freq="2412") sta.dump_monitor() sta.request("ROAM " + bssid) sta.wait_connected(timeout=10, error="Roaming timed out") sta.dump_monitor() time.sleep(4) logger.info("Roam back to AP2") for sta in [ dev[1], wpas, dev[0], dev[2] ]: sta.dump_monitor() sta.scan(freq="2412") sta.dump_monitor() sta.request("ROAM " + bssid2) sta.wait_connected(timeout=10, error="Roaming timed out") sta.dump_monitor() def test_pmksa_cache_opportunistic_multiple_sta(dev, apdev): """Opportunistic PMKSA caching with multiple stations""" params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") params['okc'] = "1" hostapd.add_ap(apdev[0]['ifname'], params) bssid = apdev[0]['bssid'] wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5') wpas.interface_add("wlan5") for sta in [ dev[0], dev[1], dev[2], wpas ]: sta.connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP", eap="GPSK", identity="gpsk user", password="abcdefghijklmnop0123456789abcdef", okc=True, scan_freq="2412") hostapd.add_ap(apdev[1]['ifname'], params) bssid2 = apdev[1]['bssid'] logger.info("Roam to AP2") for sta in [ dev[2], dev[0], wpas, dev[1] ]: sta.dump_monitor() sta.scan_for_bss(bssid2, freq="2412") if "OK" not in sta.request("ROAM " + bssid2): raise Exception("ROAM command failed") ev = sta.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 = sta.get_pmksa(bssid2) if pmksa2 is None: raise Exception("No PMKSA cache entry created") logger.info("Roam back to AP1") for sta in [ dev[0], dev[1], dev[2], wpas ]: sta.dump_monitor() sta.scan_for_bss(bssid, freq="2412") sta.request("ROAM " + bssid) ev = sta.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") def test_pmksa_cache_preauth_oom(dev, apdev): """RSN pre-authentication to generate PMKSA cache entry and OOM""" try: _test_pmksa_cache_preauth_oom(dev, apdev) finally: subprocess.call(['ip', 'link', 'set', 'dev', 'ap-br0', 'down']) subprocess.call(['brctl', 'delbr', 'ap-br0']) def _test_pmksa_cache_preauth_oom(dev, apdev): params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap") params['bridge'] = 'ap-br0' hostapd.add_ap(apdev[0]['ifname'], params) subprocess.call(['brctl', 'setfd', 'ap-br0', '0']) subprocess.call(['ip', 'link', 'set', 'dev', 'ap-br0', 'up']) eap_connect(dev[0], apdev[0], "PAX", "pax.user@example.com", password_hex="0123456789abcdef0123456789abcdef", bssid=apdev[0]['bssid']) params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap") params['bridge'] = 'ap-br0' params['rsn_preauth'] = '1' params['rsn_preauth_interfaces'] = 'ap-br0' hapd = hostapd.add_ap(apdev[1]['ifname'], params) bssid1 = apdev[1]['bssid'] tests = [ (1, "rsn_preauth_receive"), (2, "rsn_preauth_receive"), (1, "rsn_preauth_send") ] for test in tests: with alloc_fail(hapd, test[0], test[1]): dev[0].scan_for_bss(bssid1, freq="2412") if "OK" not in dev[0].request("PREAUTH " + bssid1): raise Exception("PREAUTH failed") success = False count = 0 for i in range(50): time.sleep(0.1) pmksa = dev[0].get_pmksa(bssid1) if pmksa: success = True break state = hapd.request('GET_ALLOC_FAIL') if state.startswith('0:'): count += 1 if count > 2: break logger.info("PMKSA cache success: " + str(success)) dev[0].request("PMKSA_FLUSH") dev[0].wait_disconnected() dev[0].wait_connected() dev[0].dump_monitor() def test_pmksa_cache_size_limit(dev, apdev): """PMKSA cache size limit in wpa_supplicant""" try: _test_pmksa_cache_size_limit(dev, apdev) finally: try: hapd = hostapd.HostapdGlobal() hapd.flush() hapd.remove(apdev[0]['ifname']) except: pass params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") bssid = apdev[0]['bssid'] params['bssid'] = bssid hostapd.add_ap(apdev[0]['ifname'], params) def _test_pmksa_cache_size_limit(dev, apdev): params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache") id = dev[0].connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP", eap="GPSK", identity="gpsk user", password="abcdefghijklmnop0123456789abcdef", scan_freq="2412", only_add_network=True) for i in range(33): bssid = apdev[0]['bssid'][0:15] + "%02x" % i logger.info("Iteration with BSSID " + bssid) params['bssid'] = bssid hostapd.add_ap(apdev[0]['ifname'], params) dev[0].request("BSS_FLUSH 0") dev[0].scan_for_bss(bssid, freq=2412, only_new=True) dev[0].select_network(id) dev[0].wait_connected() dev[0].request("DISCONNECT") dev[0].wait_disconnected() dev[0].dump_monitor() entries = len(dev[0].request("PMKSA").splitlines()) - 1 if i == 32: if entries != 32: raise Exception("Unexpected number of PMKSA entries after expected removal of the oldest entry") elif i + 1 != entries: raise Exception("Unexpected number of PMKSA entries") hapd = hostapd.HostapdGlobal() hapd.flush() hapd.remove(apdev[0]['ifname']) def test_pmksa_cache_preauth_timeout(dev, apdev): """RSN pre-authentication timing out""" try: _test_pmksa_cache_preauth_timeout(dev, apdev) finally: dev[0].request("SET dot11RSNAConfigSATimeout 60") def _test_pmksa_cache_preauth_timeout(dev, apdev): dev[0].request("SET dot11RSNAConfigSATimeout 1") params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap") hostapd.add_ap(apdev[0]['ifname'], params) eap_connect(dev[0], apdev[0], "PAX", "pax.user@example.com", password_hex="0123456789abcdef0123456789abcdef", bssid=apdev[0]['bssid']) if "OK" not in dev[0].request("PREAUTH f2:11:22:33:44:55"): raise Exception("PREAUTH failed") ev = dev[0].wait_event(["RSN: pre-authentication with"], timeout=5) if ev is None: raise Exception("No timeout event seen") if "timed out" not in ev: raise Exception("Unexpected event: " + ev) def test_pmksa_cache_preauth_wpas_oom(dev, apdev): """RSN pre-authentication OOM in wpa_supplicant""" params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap") hostapd.add_ap(apdev[0]['ifname'], params) eap_connect(dev[0], apdev[0], "PAX", "pax.user@example.com", password_hex="0123456789abcdef0123456789abcdef", bssid=apdev[0]['bssid']) for i in range(1, 11): with alloc_fail(dev[0], i, "rsn_preauth_init"): res = dev[0].request("PREAUTH f2:11:22:33:44:55").strip() logger.info("Iteration %d - PREAUTH command results: %s" % (i, res)) for j in range(10): state = dev[0].request('GET_ALLOC_FAIL') if state.startswith('0:'): break time.sleep(0.05)