tests: FT with dynamic RxKHs configuration

Signed-off-by: Jouni Malinen <j@w1.fi>

tests/hwsim/test_ap_ft.py

@@ -1,5 +1,5 @@
 # Fast BSS Transition tests
-# Copyright (c) 2013-2019, Jouni Malinen <j@w1.fi>
+# Copyright (c) 2013-2024, Jouni Malinen <j@w1.fi>
 #
 # This software may be distributed under the terms of the BSD license.
 # See README for more details.
@@ -13,6 +13,7 @@ logger = logging.getLogger()
 import signal
 import struct
 import subprocess
+import tempfile
 
 import hwsim_utils
 from hwsim import HWSimRadio
@@ -3682,3 +3683,67 @@ def test_ap_ft_diff_mobility_domain_over_ds(dev, apdev):
     dev[0].scan_for_bss(dst, freq="2412")
     if "FAIL" not in dev[0].request("FT_DS " + dst):
         raise Exception("FT_DS to another mobility domain accepted")
+
+def test_ap_ft_eap_dynamic_rxkhs(dev, apdev):
+    """FT with dynamic RxKHs configuration"""
+    fd1, fn1 = tempfile.mkstemp()
+    fd2, fn2 = tempfile.mkstemp()
+    try:
+        f1 = os.fdopen(fd1, 'w')
+        f2 = os.fdopen(fd2, 'w')
+        run_ap_ft_eap_dynamic_rxkhs(dev, apdev, f1, fn1, f2, fn2)
+    finally:
+        os.unlink(fn1)
+        os.unlink(fn2)
+
+def run_ap_ft_eap_dynamic_rxkhs(dev, apdev, f1, fn1, f2, fn2):
+    ssid = "test-ft"
+    passphrase = "12345678"
+
+    bssid0 = apdev[0]['bssid']
+    bssid1 = apdev[1]['bssid']
+
+    radius = hostapd.radius_params()
+
+    f1.write('r0kh=' + bssid1 + ' nas2.w1.fi 300102030405060708090a0b0c0d0e0f300102030405060708090a0b0c0d0e0f\n')
+    f1.write('r1kh=' + bssid1 + ' 00:01:02:03:04:06 200102030405060708090a0b0c0d0e0f200102030405060708090a0b0c0d0e0f\n')
+    f1.close()
+
+    params = ft_params1a(rsn=True, ssid=ssid, passphrase=passphrase)
+    params["ieee80211w"] = "2"
+    params['wpa_key_mgmt'] = "FT-EAP"
+    params["ieee8021x"] = "1"
+    params["rxkh_file"] = fn1
+    params = dict(list(radius.items()) + list(params.items()))
+    hapd0 = hostapd.add_ap(apdev[0], params)
+
+    if len(hapd0.request("GET_RXKHS").splitlines()) != 2:
+        raise Exception("Unexpected number of RxKHs (AP0)")
+
+    params = ft_params2a(rsn=True, ssid=ssid, passphrase=passphrase)
+    params["ieee80211w"] = "2"
+    params['wpa_key_mgmt'] = "FT-EAP"
+    params["ieee8021x"] = "1"
+    params["rxkh_file"] = fn2
+    params = dict(list(radius.items()) + list(params.items()))
+    hapd1 = hostapd.add_ap(apdev[1], params)
+
+    if len(hapd1.request("GET_RXKHS").splitlines()) != 0:
+        raise Exception("Unexpected number of RxKHs (AP1a)")
+
+    bssid = run_roams(dev[1], apdev, hapd0, hapd1, ssid, passphrase, eap=True,
+                      return_after_initial=True)
+    # This roam attempt fails since the APs did not yet have matching RxKH
+    # configuration.
+    dev[1].roam(bssid, check_bssid=False)
+
+    f2.write('r0kh=' + bssid0 + ' nas1.w1.fi 200102030405060708090a0b0c0d0e0f200102030405060708090a0b0c0d0e0f\n')
+    f2.write('r1kh=' + bssid0 + ' 00:01:02:03:04:05 300102030405060708090a0b0c0d0e0f300102030405060708090a0b0c0d0e0f\n')
+    f2.close()
+    if "OK" not in hapd1.request("RELOAD_RXKHS"):
+        raise Exception("Failed to reload RxKHs")
+
+    if len(hapd1.request("GET_RXKHS").splitlines()) != 2:
+        raise Exception("Unexpected number of RxKHs (AP1b)")
+
+    run_roams(dev[0], apdev, hapd0, hapd1, ssid, passphrase, eap=True)