tests: Test case for Hotspot 2.0 with external SIM processing

This verifies network selection using 3GPP Network Information and
connection using EAP-SIM with GSM authentication handled by an external
program.

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

tests/hwsim/test_ap_hs20.py

@@ -10,6 +10,8 @@ import time
 import subprocess
 import logging
 logger = logging.getLogger(__name__)
+import os.path
+import subprocess
 
 import hostapd
 
@@ -99,3 +101,69 @@ def test_ap_hs20_select(dev, apdev):
         raise Exception("Network selection timed out");
     if "INTERWORKING-NO-MATCH" not in ev:
         raise Exception("Unexpected network match")
+
+def test_ap_hs20_ext_sim(dev, apdev):
+    """Hotspot 2.0 with external SIM processing"""
+    if not os.path.exists("/tmp/hlr_auc_gw.sock"):
+        logger.info("No hlr_auc_gw available");
+        return "skip"
+    if not os.path.exists("../../hostapd/hlr_auc_gw"):
+        logger.info("No hlr_auc_gw available");
+        return "skip"
+    bssid = apdev[0]['bssid']
+    params = hs20_ap_params()
+    params['hessid'] = bssid
+    params['anqp_3gpp_cell_net'] = "232,01"
+    params['domain_name'] = "wlan.mnc001.mcc232.3gppnetwork.org"
+    hostapd.add_ap(apdev[0]['ifname'], params)
+
+    dev[0].request("SET interworking 1")
+    dev[0].request("SET hs20 1")
+    dev[0].request("SET external_sim 1")
+
+    id = dev[0].add_cred()
+    dev[0].set_cred_quoted(id, "imsi", "23201-0000000000")
+    dev[0].set_cred(id, "eap", "SIM")
+
+    dev[0].dump_monitor()
+    dev[0].request("INTERWORKING_SELECT")
+    ev = dev[0].wait_event(["INTERWORKING-AP", "INTERWORKING-NO-MATCH"],
+                           timeout=15)
+    if ev is None:
+        raise Exception("Network selection timed out")
+    if "INTERWORKING-NO-MATCH" in ev:
+        raise Exception("Matching network not found")
+    if bssid not in ev:
+        raise Exception("Unexpected BSSID in match")
+    if "type=home" not in ev:
+        raise Exception("Home network not recognized")
+
+    dev[0].request("INTERWORKING_CONNECT " + bssid)
+
+    ev = dev[0].wait_event(["CTRL-EVENT-EAP-METHOD"], timeout=15)
+    if ev is None:
+        raise Exception("Network connected timed out")
+    if "(SIM)" not in ev:
+        raise Exception("Unexpected EAP method selection")
+
+    ev = dev[0].wait_event(["CTRL-REQ-SIM"], timeout=15)
+    if ev is None:
+        raise Exception("Wait for external SIM processing request timed out")
+    p = ev.split(':', 2)
+    if p[1] != "GSM-AUTH":
+        raise Exception("Unexpected CTRL-REQ-SIM type")
+    id = p[0].split('-')[3]
+    rand = p[2].split(' ')[0]
+
+    res = subprocess.check_output(["../../hostapd/hlr_auc_gw",
+                                   "-m",
+                                   "auth_serv/hlr_auc_gw.milenage_db",
+                                   "GSM-AUTH-REQ 232010000000000 " + rand])
+    if "GSM-AUTH-RESP" not in res:
+        raise Exception("Unexpected hlr_auc_gw response")
+    resp = res.split(' ')[2].rstrip()
+
+    dev[0].request("CTRL-RSP-SIM-" + id + ":GSM-AUTH:" + resp)
+    ev = dev[0].wait_event(["CTRL-EVENT-CONNECTED"], timeout=15)
+    if ev is None:
+        raise Exception("Connection timed out")

tests/hwsim/wpasupplicant.py

@@ -56,6 +56,7 @@ class WpaSupplicant:
         if not "OK" in res:
             logger.info("FLUSH to " + self.ifname + " failed: " + res)
         self.request("SET ignore_old_scan_res 0")
+        self.request("SET external_sim 0")
         self.request("P2P_SET per_sta_psk 0")
         self.request("P2P_SET disabled 0")
         self.request("P2P_SERVICE_FLUSH")