285 lines
11 KiB
Python
285 lines
11 KiB
Python
# WPA2-Enterprise PMKSA caching tests
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# Copyright (c) 2013-2014, Jouni Malinen <j@w1.fi>
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#
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# This software may be distributed under the terms of the BSD license.
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# See README for more details.
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import logging
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logger = logging.getLogger()
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import subprocess
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import time
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import hostapd
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from test_ap_eap import eap_connect
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def test_pmksa_cache_on_roam_back(dev, apdev):
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"""PMKSA cache to skip EAP on reassociation back to same AP"""
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params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache")
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hostapd.add_ap(apdev[0]['ifname'], params)
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bssid = apdev[0]['bssid']
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dev[0].connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP",
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eap="GPSK", identity="gpsk user",
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password="abcdefghijklmnop0123456789abcdef",
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scan_freq="2412")
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pmksa = dev[0].get_pmksa(bssid)
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if pmksa is None:
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raise Exception("No PMKSA cache entry created")
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if pmksa['opportunistic'] != '0':
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raise Exception("Unexpected opportunistic PMKSA cache entry")
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hostapd.add_ap(apdev[1]['ifname'], params)
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bssid2 = apdev[1]['bssid']
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dev[0].dump_monitor()
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logger.info("Roam to AP2")
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dev[0].scan(freq="2412")
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dev[0].request("ROAM " + bssid2)
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=10)
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if ev is None:
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raise Exception("EAP success timed out")
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ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Roaming with the AP timed out")
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pmksa2 = dev[0].get_pmksa(bssid2)
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if pmksa2 is None:
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raise Exception("No PMKSA cache entry found")
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if pmksa2['opportunistic'] != '0':
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raise Exception("Unexpected opportunistic PMKSA cache entry")
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dev[0].dump_monitor()
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logger.info("Roam back to AP1")
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dev[0].scan(freq="2412")
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dev[0].request("ROAM " + bssid)
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
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"CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Roaming with the AP timed out")
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if "CTRL-EVENT-EAP-STARTED" in ev:
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raise Exception("Unexpected EAP exchange")
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pmksa1b = dev[0].get_pmksa(bssid)
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if pmksa1b is None:
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raise Exception("No PMKSA cache entry found")
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if pmksa['pmkid'] != pmksa1b['pmkid']:
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raise Exception("Unexpected PMKID change for AP1")
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def test_pmksa_cache_opportunistic_only_on_sta(dev, apdev):
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"""Opportunistic PMKSA caching enabled only on station"""
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params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache")
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hostapd.add_ap(apdev[0]['ifname'], params)
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bssid = apdev[0]['bssid']
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dev[0].connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP",
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eap="GPSK", identity="gpsk user",
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password="abcdefghijklmnop0123456789abcdef", okc=True,
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scan_freq="2412")
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pmksa = dev[0].get_pmksa(bssid)
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if pmksa is None:
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raise Exception("No PMKSA cache entry created")
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if pmksa['opportunistic'] != '0':
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raise Exception("Unexpected opportunistic PMKSA cache entry")
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hostapd.add_ap(apdev[1]['ifname'], params)
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bssid2 = apdev[1]['bssid']
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dev[0].dump_monitor()
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logger.info("Roam to AP2")
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dev[0].scan(freq="2412")
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dev[0].request("ROAM " + bssid2)
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=10)
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if ev is None:
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raise Exception("EAP success timed out")
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ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Roaming with the AP timed out")
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pmksa2 = dev[0].get_pmksa(bssid2)
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if pmksa2 is None:
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raise Exception("No PMKSA cache entry found")
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if pmksa2['opportunistic'] != '0':
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raise Exception("Unexpected opportunistic PMKSA cache entry")
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dev[0].dump_monitor()
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logger.info("Roam back to AP1")
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dev[0].scan(freq="2412")
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dev[0].request("ROAM " + bssid)
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
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"CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Roaming with the AP timed out")
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if "CTRL-EVENT-EAP-STARTED" in ev:
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raise Exception("Unexpected EAP exchange")
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pmksa1b = dev[0].get_pmksa(bssid)
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if pmksa1b is None:
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raise Exception("No PMKSA cache entry found")
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if pmksa['pmkid'] != pmksa1b['pmkid']:
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raise Exception("Unexpected PMKID change for AP1")
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def test_pmksa_cache_opportunistic(dev, apdev):
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"""Opportunistic PMKSA caching"""
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params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache")
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params['okc'] = "1"
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hostapd.add_ap(apdev[0]['ifname'], params)
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bssid = apdev[0]['bssid']
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dev[0].connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP",
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eap="GPSK", identity="gpsk user",
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password="abcdefghijklmnop0123456789abcdef", okc=True,
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scan_freq="2412")
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pmksa = dev[0].get_pmksa(bssid)
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if pmksa is None:
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raise Exception("No PMKSA cache entry created")
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if pmksa['opportunistic'] != '0':
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raise Exception("Unexpected opportunistic PMKSA cache entry")
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hostapd.add_ap(apdev[1]['ifname'], params)
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bssid2 = apdev[1]['bssid']
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dev[0].dump_monitor()
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logger.info("Roam to AP2")
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dev[0].scan(freq="2412")
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dev[0].request("ROAM " + bssid2)
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
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"CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Roaming with the AP timed out")
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if "CTRL-EVENT-EAP-STARTED" in ev:
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raise Exception("Unexpected EAP exchange")
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pmksa2 = dev[0].get_pmksa(bssid2)
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if pmksa2 is None:
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raise Exception("No PMKSA cache entry created")
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dev[0].dump_monitor()
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logger.info("Roam back to AP1")
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dev[0].scan(freq="2412")
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dev[0].request("ROAM " + bssid)
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
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"CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Roaming with the AP timed out")
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if "CTRL-EVENT-EAP-STARTED" in ev:
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raise Exception("Unexpected EAP exchange")
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pmksa1b = dev[0].get_pmksa(bssid)
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if pmksa1b is None:
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raise Exception("No PMKSA cache entry found")
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if pmksa['pmkid'] != pmksa1b['pmkid']:
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raise Exception("Unexpected PMKID change for AP1")
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def test_pmksa_cache_expiration(dev, apdev):
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"""PMKSA cache entry expiration"""
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params = hostapd.wpa2_eap_params(ssid="test-pmksa-cache")
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hostapd.add_ap(apdev[0]['ifname'], params)
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bssid = apdev[0]['bssid']
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dev[0].request("SET dot11RSNAConfigPMKLifetime 10")
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dev[0].connect("test-pmksa-cache", proto="RSN", key_mgmt="WPA-EAP",
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eap="GPSK", identity="gpsk user",
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password="abcdefghijklmnop0123456789abcdef",
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scan_freq="2412")
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pmksa = dev[0].get_pmksa(bssid)
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if pmksa is None:
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raise Exception("No PMKSA cache entry created")
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logger.info("Wait for PMKSA cache entry to expire")
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ev = dev[0].wait_event(["WPA: Key negotiation completed",
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"CTRL-EVENT-DISCONNECTED"], timeout=15)
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if ev is None:
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raise Exception("No EAP reauthentication seen")
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if "CTRL-EVENT-DISCONNECTED" in ev:
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raise Exception("Unexpected disconnection")
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pmksa2 = dev[0].get_pmksa(bssid)
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if pmksa['pmkid'] == pmksa2['pmkid']:
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raise Exception("PMKID did not change")
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def test_pmksa_cache_and_cui(dev, apdev):
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"""PMKSA cache and Chargeable-User-Identity"""
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params = hostapd.wpa2_eap_params(ssid="cui")
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params['radius_request_cui'] = '1'
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params['acct_server_addr'] = "127.0.0.1"
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params['acct_server_port'] = "1813"
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params['acct_server_shared_secret'] = "radius"
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hostapd.add_ap(apdev[0]['ifname'], params)
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bssid = apdev[0]['bssid']
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dev[0].connect("cui", proto="RSN", key_mgmt="WPA-EAP",
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eap="GPSK", identity="gpsk-cui",
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password="abcdefghijklmnop0123456789abcdef",
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scan_freq="2412")
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pmksa = dev[0].get_pmksa(bssid)
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if pmksa is None:
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raise Exception("No PMKSA cache entry created")
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dev[0].dump_monitor()
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logger.info("Disconnect and reconnect to the same AP")
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dev[0].request("DISCONNECT")
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dev[0].request("RECONNECT")
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
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"CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Reconnect timed out")
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if "CTRL-EVENT-EAP-STARTED" in ev:
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raise Exception("Unexpected EAP exchange")
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pmksa1b = dev[0].get_pmksa(bssid)
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if pmksa1b is None:
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raise Exception("No PMKSA cache entry found")
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if pmksa['pmkid'] != pmksa1b['pmkid']:
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raise Exception("Unexpected PMKID change for AP1")
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dev[0].request("REAUTHENTICATE")
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=10)
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if ev is None:
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raise Exception("EAP success timed out")
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for i in range(0, 20):
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state = dev[0].get_status_field("wpa_state")
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if state == "COMPLETED":
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break
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time.sleep(0.1)
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if state != "COMPLETED":
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raise Exception("Reauthentication did not complete")
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def test_pmksa_cache_preauth(dev, apdev):
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"""RSN pre-authentication to generate PMKSA cache entry"""
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try:
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params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap")
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params['bridge'] = 'ap-br0'
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hostapd.add_ap(apdev[0]['ifname'], params)
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subprocess.call(['sudo', 'brctl', 'setfd', 'ap-br0', '0'])
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subprocess.call(['sudo', 'ip', 'link', 'set', 'dev', 'ap-br0', 'up'])
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eap_connect(dev[0], apdev[0], "PAX", "pax.user@example.com",
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password_hex="0123456789abcdef0123456789abcdef")
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params = hostapd.wpa2_eap_params(ssid="test-wpa2-eap")
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params['bridge'] = 'ap-br0'
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params['rsn_preauth'] = '1'
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params['rsn_preauth_interfaces'] = 'ap-br0'
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hostapd.add_ap(apdev[1]['ifname'], params)
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bssid1 = apdev[1]['bssid']
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dev[0].scan(freq="2412")
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success = False
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status_seen = False
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for i in range(0, 50):
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if not status_seen:
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status = dev[0].request("STATUS")
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if "Pre-authentication EAPOL state machines:" in status:
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status_seen = True
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time.sleep(0.1)
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pmksa = dev[0].get_pmksa(bssid1)
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if pmksa:
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success = True
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break
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if not success:
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raise Exception("No PMKSA cache entry created from pre-authentication")
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if not status_seen:
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raise Exception("Pre-authentication EAPOL status was not available")
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dev[0].scan(freq="2412")
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dev[0].request("ROAM " + bssid1)
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
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"CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Roaming with the AP timed out")
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if "CTRL-EVENT-EAP-STARTED" in ev:
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raise Exception("Unexpected EAP exchange")
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pmksa2 = dev[0].get_pmksa(bssid1)
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if pmksa2 is None:
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raise Exception("No PMKSA cache entry")
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if pmksa['pmkid'] != pmksa2['pmkid']:
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raise Exception("Unexpected PMKID change")
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finally:
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subprocess.call(['sudo', 'ip', 'link', 'set', 'dev', 'ap-br0', 'down'])
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subprocess.call(['sudo', 'brctl', 'delbr', 'ap-br0'])
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