555 lines
20 KiB
Python
555 lines
20 KiB
Python
# Test cases for FILS
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# Copyright (c) 2015-2017, Qualcomm Atheros, Inc.
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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 binascii
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import hashlib
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import logging
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logger = logging.getLogger()
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import os
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import socket
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import struct
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import time
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import hostapd
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from wpasupplicant import WpaSupplicant
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import hwsim_utils
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from utils import HwsimSkip
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from test_erp import check_erp_capa, start_erp_as
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from test_ap_hs20 import ip_checksum
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def check_fils_capa(dev):
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capa = dev.get_capability("fils")
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if capa is None or "FILS" not in capa:
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raise HwsimSkip("FILS not supported")
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def test_fils_sk_full_auth(dev, apdev):
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"""FILS SK full authentication"""
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check_fils_capa(dev[0])
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check_erp_capa(dev[0])
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start_erp_as(apdev[1])
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bssid = apdev[0]['bssid']
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params = hostapd.wpa2_eap_params(ssid="fils")
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params['wpa_key_mgmt'] = "FILS-SHA256"
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params['auth_server_port'] = "18128"
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params['erp_send_reauth_start'] = '1'
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params['erp_domain'] = 'example.com'
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params['fils_realm'] = 'example.com'
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params['wpa_group_rekey'] = '1'
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hapd = hostapd.add_ap(apdev[0]['ifname'], params)
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dev[0].scan_for_bss(bssid, freq=2412)
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bss = dev[0].get_bss(bssid)
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logger.debug("BSS: " + str(bss))
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if "[FILS]" not in bss['flags']:
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raise Exception("[FILS] flag not indicated")
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if "[WPA2-FILS-SHA256-CCMP]" not in bss['flags']:
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raise Exception("[WPA2-FILS-SHA256-CCMP] flag not indicated")
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res = dev[0].request("SCAN_RESULTS")
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logger.debug("SCAN_RESULTS: " + res)
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if "[FILS]" not in res:
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raise Exception("[FILS] flag not indicated")
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if "[WPA2-FILS-SHA256-CCMP]" not in res:
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raise Exception("[WPA2-FILS-SHA256-CCMP] flag not indicated")
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dev[0].request("ERP_FLUSH")
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dev[0].connect("fils", key_mgmt="FILS-SHA256",
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eap="PSK", identity="psk.user@example.com",
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password_hex="0123456789abcdef0123456789abcdef",
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erp="1", scan_freq="2412")
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hwsim_utils.test_connectivity(dev[0], hapd)
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ev = dev[0].wait_event(["WPA: Group rekeying completed"], timeout=2)
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if ev is None:
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raise Exception("GTK rekey timed out")
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hwsim_utils.test_connectivity(dev[0], hapd)
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conf = hapd.get_config()
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if conf['key_mgmt'] != 'FILS-SHA256':
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raise Exception("Unexpected config key_mgmt: " + conf['key_mgmt'])
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def test_fils_sk_sha384_full_auth(dev, apdev):
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"""FILS SK full authentication (SHA384)"""
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check_fils_capa(dev[0])
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check_erp_capa(dev[0])
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start_erp_as(apdev[1])
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bssid = apdev[0]['bssid']
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params = hostapd.wpa2_eap_params(ssid="fils")
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params['wpa_key_mgmt'] = "FILS-SHA384"
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params['auth_server_port'] = "18128"
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params['erp_send_reauth_start'] = '1'
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params['erp_domain'] = 'example.com'
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params['fils_realm'] = 'example.com'
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params['wpa_group_rekey'] = '1'
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hapd = hostapd.add_ap(apdev[0]['ifname'], params)
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dev[0].scan_for_bss(bssid, freq=2412)
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bss = dev[0].get_bss(bssid)
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logger.debug("BSS: " + str(bss))
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if "[FILS]" not in bss['flags']:
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raise Exception("[FILS] flag not indicated")
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if "[WPA2-FILS-SHA384-CCMP]" not in bss['flags']:
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raise Exception("[WPA2-FILS-SHA384-CCMP] flag not indicated")
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res = dev[0].request("SCAN_RESULTS")
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logger.debug("SCAN_RESULTS: " + res)
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if "[FILS]" not in res:
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raise Exception("[FILS] flag not indicated")
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if "[WPA2-FILS-SHA384-CCMP]" not in res:
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raise Exception("[WPA2-FILS-SHA384-CCMP] flag not indicated")
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dev[0].request("ERP_FLUSH")
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dev[0].connect("fils", key_mgmt="FILS-SHA384",
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eap="PSK", identity="psk.user@example.com",
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password_hex="0123456789abcdef0123456789abcdef",
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erp="1", scan_freq="2412")
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hwsim_utils.test_connectivity(dev[0], hapd)
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ev = dev[0].wait_event(["WPA: Group rekeying completed"], timeout=2)
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if ev is None:
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raise Exception("GTK rekey timed out")
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hwsim_utils.test_connectivity(dev[0], hapd)
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conf = hapd.get_config()
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if conf['key_mgmt'] != 'FILS-SHA384':
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raise Exception("Unexpected config key_mgmt: " + conf['key_mgmt'])
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def test_fils_sk_pmksa_caching(dev, apdev):
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"""FILS SK and PMKSA caching"""
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check_fils_capa(dev[0])
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check_erp_capa(dev[0])
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start_erp_as(apdev[1])
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bssid = apdev[0]['bssid']
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params = hostapd.wpa2_eap_params(ssid="fils")
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params['wpa_key_mgmt'] = "FILS-SHA256"
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params['auth_server_port'] = "18128"
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params['erp_domain'] = 'example.com'
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params['fils_realm'] = 'example.com'
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hapd = hostapd.add_ap(apdev[0]['ifname'], params)
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dev[0].scan_for_bss(bssid, freq=2412)
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dev[0].request("ERP_FLUSH")
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id = dev[0].connect("fils", key_mgmt="FILS-SHA256",
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eap="PSK", identity="psk.user@example.com",
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password_hex="0123456789abcdef0123456789abcdef",
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erp="1", 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].request("DISCONNECT")
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dev[0].wait_disconnected()
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dev[0].dump_monitor()
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dev[0].select_network(id, freq=2412)
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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("Connection using PMKSA caching 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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hwsim_utils.test_connectivity(dev[0], hapd)
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pmksa2 = dev[0].get_pmksa(bssid)
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if pmksa2 is None:
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raise Exception("No PMKSA cache entry found")
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if pmksa['pmkid'] != pmksa2['pmkid']:
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raise Exception("Unexpected PMKID change")
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# Verify EAPOL reauthentication after FILS authentication
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hapd.request("EAPOL_REAUTH " + dev[0].own_addr())
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED"], timeout=5)
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if ev is None:
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raise Exception("EAP authentication did not start")
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-SUCCESS"], timeout=5)
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if ev is None:
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raise Exception("EAP authentication did not succeed")
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time.sleep(0.1)
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hwsim_utils.test_connectivity(dev[0], hapd)
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def test_fils_sk_erp(dev, apdev):
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"""FILS SK using ERP"""
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run_fils_sk_erp(dev, apdev, "FILS-SHA256")
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def test_fils_sk_erp_sha384(dev, apdev):
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"""FILS SK using ERP and SHA384"""
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run_fils_sk_erp(dev, apdev, "FILS-SHA384")
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def run_fils_sk_erp(dev, apdev, key_mgmt):
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check_fils_capa(dev[0])
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check_erp_capa(dev[0])
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start_erp_as(apdev[1])
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bssid = apdev[0]['bssid']
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params = hostapd.wpa2_eap_params(ssid="fils")
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params['wpa_key_mgmt'] = key_mgmt
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params['auth_server_port'] = "18128"
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params['erp_domain'] = 'example.com'
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params['fils_realm'] = 'example.com'
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params['disable_pmksa_caching'] = '1'
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hapd = hostapd.add_ap(apdev[0]['ifname'], params)
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dev[0].scan_for_bss(bssid, freq=2412)
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dev[0].request("ERP_FLUSH")
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id = dev[0].connect("fils", key_mgmt=key_mgmt,
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eap="PSK", identity="psk.user@example.com",
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password_hex="0123456789abcdef0123456789abcdef",
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erp="1", scan_freq="2412")
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dev[0].request("DISCONNECT")
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dev[0].wait_disconnected()
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dev[0].dump_monitor()
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dev[0].select_network(id, freq=2412)
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
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"EVENT-ASSOC-REJECT",
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"CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Connection using FILS/ERP 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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if "EVENT-ASSOC-REJECT" in ev:
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raise Exception("Association failed")
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hwsim_utils.test_connectivity(dev[0], hapd)
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def test_fils_sk_erp_another_ssid(dev, apdev):
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"""FILS SK using ERP and roam to another SSID"""
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check_fils_capa(dev[0])
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check_erp_capa(dev[0])
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start_erp_as(apdev[1])
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bssid = apdev[0]['bssid']
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params = hostapd.wpa2_eap_params(ssid="fils")
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params['wpa_key_mgmt'] = "FILS-SHA256"
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params['auth_server_port'] = "18128"
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params['erp_domain'] = 'example.com'
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params['fils_realm'] = 'example.com'
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params['disable_pmksa_caching'] = '1'
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hapd = hostapd.add_ap(apdev[0]['ifname'], params)
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dev[0].scan_for_bss(bssid, freq=2412)
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dev[0].request("ERP_FLUSH")
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id = dev[0].connect("fils", key_mgmt="FILS-SHA256",
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eap="PSK", identity="psk.user@example.com",
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password_hex="0123456789abcdef0123456789abcdef",
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erp="1", scan_freq="2412")
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dev[0].request("DISCONNECT")
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dev[0].wait_disconnected()
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hapd.disable()
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dev[0].flush_scan_cache()
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if "FAIL" in dev[0].request("PMKSA_FLUSH"):
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raise Exception("PMKSA_FLUSH failed")
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params = hostapd.wpa2_eap_params(ssid="fils2")
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params['wpa_key_mgmt'] = "FILS-SHA256"
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params['auth_server_port'] = "18128"
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params['erp_domain'] = 'example.com'
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params['fils_realm'] = 'example.com'
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params['disable_pmksa_caching'] = '1'
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hapd = hostapd.add_ap(apdev[0]['ifname'], params)
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dev[0].scan_for_bss(bssid, freq=2412)
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dev[0].dump_monitor()
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id = dev[0].connect("fils2", key_mgmt="FILS-SHA256",
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eap="PSK", identity="psk.user@example.com",
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password_hex="0123456789abcdef0123456789abcdef",
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erp="1", scan_freq="2412", wait_connect=False)
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
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"EVENT-ASSOC-REJECT",
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"CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Connection using FILS/ERP 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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if "EVENT-ASSOC-REJECT" in ev:
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raise Exception("Association failed")
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hwsim_utils.test_connectivity(dev[0], hapd)
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def test_fils_sk_multiple_realms(dev, apdev):
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"""FILS SK and multiple realms"""
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check_fils_capa(dev[0])
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check_erp_capa(dev[0])
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start_erp_as(apdev[1])
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bssid = apdev[0]['bssid']
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params = hostapd.wpa2_eap_params(ssid="fils")
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params['wpa_key_mgmt'] = "FILS-SHA256"
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params['auth_server_port'] = "18128"
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params['erp_domain'] = 'example.com'
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fils_realms = [ 'r1.example.org', 'r2.EXAMPLE.org', 'r3.example.org',
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'r4.example.org', 'r5.example.org', 'r6.example.org',
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'r7.example.org', 'r8.example.org',
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'example.com',
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'r9.example.org', 'r10.example.org', 'r11.example.org',
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'r12.example.org', 'r13.example.org', 'r14.example.org',
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'r15.example.org', 'r16.example.org' ]
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params['fils_realm'] = fils_realms
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params['fils_cache_id'] = "1234"
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params['hessid'] = bssid
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hapd = hostapd.add_ap(apdev[0]['ifname'], params)
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dev[0].scan_for_bss(bssid, freq=2412)
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if "OK" not in dev[0].request("ANQP_GET " + bssid + " 275"):
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raise Exception("ANQP_GET command failed")
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ev = dev[0].wait_event(["GAS-QUERY-DONE"], timeout=10)
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if ev is None:
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raise Exception("GAS query timed out")
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bss = dev[0].get_bss(bssid)
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if 'fils_info' not in bss:
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raise Exception("FILS Indication element information missing")
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if bss['fils_info'] != '02b8':
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raise Exception("Unexpected FILS Information: " + bss['fils_info'])
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if 'fils_cache_id' not in bss:
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raise Exception("FILS Cache Identifier missing")
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if bss['fils_cache_id'] != '1234':
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raise Exception("Unexpected FILS Cache Identifier: " + bss['fils_cache_id'])
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if 'fils_realms' not in bss:
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raise Exception("FILS Realm Identifiers missing")
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expected = ''
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count = 0
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for realm in fils_realms:
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hash = hashlib.sha256(realm.lower()).digest()
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expected += binascii.hexlify(hash[0:2])
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count += 1
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if count == 7:
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break
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if bss['fils_realms'] != expected:
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raise Exception("Unexpected FILS Realm Identifiers: " + bss['fils_realms'])
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if 'anqp_fils_realm_info' not in bss:
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raise Exception("FILS Realm Information ANQP-element not seen")
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info = bss['anqp_fils_realm_info'];
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expected = ''
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for realm in fils_realms:
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hash = hashlib.sha256(realm.lower()).digest()
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expected += binascii.hexlify(hash[0:2])
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if info != expected:
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raise Exception("Unexpected FILS Realm Info ANQP-element: " + info)
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dev[0].request("ERP_FLUSH")
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id = dev[0].connect("fils", key_mgmt="FILS-SHA256",
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eap="PSK", identity="psk.user@example.com",
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password_hex="0123456789abcdef0123456789abcdef",
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erp="1", scan_freq="2412")
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dev[0].request("DISCONNECT")
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dev[0].wait_disconnected()
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dev[0].dump_monitor()
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dev[0].select_network(id, freq=2412)
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ev = dev[0].wait_event(["CTRL-EVENT-EAP-STARTED",
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"EVENT-ASSOC-REJECT",
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"CTRL-EVENT-CONNECTED"], timeout=10)
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if ev is None:
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raise Exception("Connection using FILS/ERP 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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if "EVENT-ASSOC-REJECT" in ev:
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raise Exception("Association failed")
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hwsim_utils.test_connectivity(dev[0], hapd)
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# DHCP message op codes
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BOOTREQUEST=1
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BOOTREPLY=2
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OPT_PAD=0
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OPT_DHCP_MESSAGE_TYPE=53
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OPT_RAPID_COMMIT=80
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OPT_END=255
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DHCPDISCOVER=1
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DHCPOFFER=2
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DHCPREQUEST=3
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DHCPDECLINE=4
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DHCPACK=5
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DHCPNAK=6
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DHCPRELEASE=7
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DHCPINFORM=8
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def build_dhcp(req, dhcp_msg, chaddr, giaddr="0.0.0.0",
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ip_src="0.0.0.0", ip_dst="255.255.255.255",
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rapid_commit=True):
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proto = '\x08\x00' # IPv4
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_ip_src = socket.inet_pton(socket.AF_INET, ip_src)
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_ip_dst = socket.inet_pton(socket.AF_INET, ip_dst)
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_ciaddr = '\x00\x00\x00\x00'
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_yiaddr = '\x00\x00\x00\x00'
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_siaddr = '\x00\x00\x00\x00'
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_giaddr = socket.inet_pton(socket.AF_INET, giaddr)
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_chaddr = binascii.unhexlify(chaddr.replace(':','')) + 10*'\x00'
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htype = 1 # Hardware address type; 1 = Ethernet
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hlen = 6 # Hardware address length
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hops = 0
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xid = 123456
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secs = 0
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flags = 0
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if req:
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op = BOOTREQUEST
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src_port = 68
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dst_port = 67
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else:
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op = BOOTREPLY
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src_port = 67
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dst_port = 68
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payload = struct.pack('>BBBBLHH', op, htype, hlen, hops, xid, secs, flags)
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sname = 64*'\x00'
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file = 128*'\x00'
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payload += _ciaddr + _yiaddr + _siaddr + _giaddr + _chaddr + sname + file
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# magic - DHCP
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payload += '\x63\x82\x53\x63'
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# Option: DHCP Message Type
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payload += struct.pack('BBB', OPT_DHCP_MESSAGE_TYPE, 1, dhcp_msg)
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if rapid_commit:
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# Option: Rapid Commit
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payload += struct.pack('BB', OPT_RAPID_COMMIT, 0)
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# End Option
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payload += struct.pack('B', OPT_END)
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udp = struct.pack('>HHHH', src_port, dst_port,
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8 + len(payload), 0) + payload
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|
|
tot_len = 20 + len(udp)
|
|
start = struct.pack('>BBHHBBBB', 0x45, 0, tot_len, 0, 0, 0, 128, 17)
|
|
ipv4 = start + '\x00\x00' + _ip_src + _ip_dst
|
|
csum = ip_checksum(ipv4)
|
|
ipv4 = start + csum + _ip_src + _ip_dst
|
|
|
|
return proto + ipv4 + udp
|
|
|
|
def test_fils_sk_hlp(dev, apdev):
|
|
"""FILS SK HLP (rapid commit server)"""
|
|
run_fils_sk_hlp(dev, apdev, True)
|
|
|
|
def test_fils_sk_hlp_no_rapid_commit(dev, apdev):
|
|
"""FILS SK HLP (no rapid commit server)"""
|
|
run_fils_sk_hlp(dev, apdev, False)
|
|
|
|
def run_fils_sk_hlp(dev, apdev, rapid_commit_server):
|
|
check_fils_capa(dev[0])
|
|
check_erp_capa(dev[0])
|
|
|
|
start_erp_as(apdev[1])
|
|
|
|
sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM, socket.IPPROTO_UDP)
|
|
sock.settimeout(5)
|
|
sock.bind(("127.0.0.2", 67))
|
|
|
|
bssid = apdev[0]['bssid']
|
|
params = hostapd.wpa2_eap_params(ssid="fils")
|
|
params['wpa_key_mgmt'] = "FILS-SHA256"
|
|
params['auth_server_port'] = "18128"
|
|
params['erp_domain'] = 'example.com'
|
|
params['fils_realm'] = 'example.com'
|
|
params['disable_pmksa_caching'] = '1'
|
|
params['own_ip_addr'] = '127.0.0.3'
|
|
params['dhcp_server'] = '127.0.0.2'
|
|
params['fils_hlp_wait_time'] = '10000'
|
|
if not rapid_commit_server:
|
|
params['dhcp_rapid_commit_proxy'] = '1'
|
|
hapd = hostapd.add_ap(apdev[0]['ifname'], params)
|
|
|
|
dev[0].scan_for_bss(bssid, freq=2412)
|
|
dev[0].request("ERP_FLUSH")
|
|
if "OK" not in dev[0].request("FILS_HLP_REQ_FLUSH"):
|
|
raise Exception("Failed to flush pending FILS HLP requests")
|
|
tests = [ "",
|
|
"q",
|
|
"ff:ff:ff:ff:ff:ff",
|
|
"ff:ff:ff:ff:ff:ff q" ]
|
|
for t in tests:
|
|
if "FAIL" not in dev[0].request("FILS_HLP_REQ_ADD " + t):
|
|
raise Exception("Invalid FILS_HLP_REQ_ADD accepted: " + t)
|
|
dhcpdisc = build_dhcp(req=True, dhcp_msg=DHCPDISCOVER,
|
|
chaddr=dev[0].own_addr())
|
|
tests = [ "ff:ff:ff:ff:ff:ff aabb",
|
|
"ff:ff:ff:ff:ff:ff " + 255*'cc',
|
|
hapd.own_addr() + " ddee010203040506070809",
|
|
"ff:ff:ff:ff:ff:ff " + binascii.hexlify(dhcpdisc) ]
|
|
for t in tests:
|
|
if "OK" not in dev[0].request("FILS_HLP_REQ_ADD " + t):
|
|
raise Exception("FILS_HLP_REQ_ADD failed: " + t)
|
|
id = dev[0].connect("fils", key_mgmt="FILS-SHA256",
|
|
eap="PSK", identity="psk.user@example.com",
|
|
password_hex="0123456789abcdef0123456789abcdef",
|
|
erp="1", scan_freq="2412")
|
|
|
|
dev[0].request("DISCONNECT")
|
|
dev[0].wait_disconnected()
|
|
|
|
dev[0].dump_monitor()
|
|
dev[0].select_network(id, freq=2412)
|
|
|
|
(msg,addr) = sock.recvfrom(1000)
|
|
logger.debug("Received DHCP message from %s" % str(addr))
|
|
if rapid_commit_server:
|
|
# TODO: Proper rapid commit response
|
|
dhcpdisc = build_dhcp(req=False, dhcp_msg=DHCPACK,
|
|
chaddr=dev[0].own_addr(), giaddr="127.0.0.3")
|
|
sock.sendto(dhcpdisc[2+20+8:], addr)
|
|
else:
|
|
dhcpdisc = build_dhcp(req=False, dhcp_msg=DHCPOFFER, rapid_commit=False,
|
|
chaddr=dev[0].own_addr(), giaddr="127.0.0.3")
|
|
sock.sendto(dhcpdisc[2+20+8:], addr)
|
|
(msg,addr) = sock.recvfrom(1000)
|
|
logger.debug("Received DHCP message from %s" % str(addr))
|
|
dhcpdisc = build_dhcp(req=False, dhcp_msg=DHCPACK, rapid_commit=False,
|
|
chaddr=dev[0].own_addr(), giaddr="127.0.0.3")
|
|
sock.sendto(dhcpdisc[2+20+8:], addr)
|
|
ev = dev[0].wait_event(["FILS-HLP-RX"], timeout=10)
|
|
if ev is None:
|
|
raise Exception("FILS HLP response not reported")
|
|
vals = ev.split(' ')
|
|
frame = binascii.unhexlify(vals[3].split('=')[1])
|
|
proto, = struct.unpack('>H', frame[0:2])
|
|
if proto != 0x0800:
|
|
raise Exception("Unexpected ethertype in HLP response: %d" % proto)
|
|
frame = frame[2:]
|
|
ip = frame[0:20]
|
|
if ip_checksum(ip) != '\x00\x00':
|
|
raise Exception("IP header checksum mismatch in HLP response")
|
|
frame = frame[20:]
|
|
udp = frame[0:8]
|
|
frame = frame[8:]
|
|
sport, dport, ulen, ucheck = struct.unpack('>HHHH', udp)
|
|
if sport != 67 or dport != 68:
|
|
raise Exception("Unexpected UDP port in HLP response")
|
|
dhcp = frame[0:28]
|
|
frame = frame[28:]
|
|
op,htype,hlen,hops,xid,secs,flags,ciaddr,yiaddr,siaddr,giaddr = struct.unpack('>4BL2H4L', dhcp)
|
|
chaddr = frame[0:16]
|
|
frame = frame[16:]
|
|
sname = frame[0:64]
|
|
frame = frame[64:]
|
|
file = frame[0:128]
|
|
frame = frame[128:]
|
|
options = frame
|
|
if options[0:4] != '\x63\x82\x53\x63':
|
|
raise Exception("No DHCP magic seen in HLP response")
|
|
options = options[4:]
|
|
# TODO: fully parse and validate DHCPACK options
|
|
if struct.pack('BBB', OPT_DHCP_MESSAGE_TYPE, 1, DHCPACK) not in options:
|
|
raise Exception("DHCPACK not in HLP response")
|
|
|
|
dev[0].wait_connected()
|
|
|
|
dev[0].request("FILS_HLP_REQ_FLUSH")
|
|
|
|
# TODO: fils_hlp_wait_time=30 and no response from server
|