tests: wpa_supplicant configuration file reading/writing

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

tests/hwsim/test_wpas_config.py

@@ -0,0 +1,111 @@
+# wpa_supplicant config file
+# Copyright (c) 2014, Jouni Malinen <j@w1.fi>
+#
+# This software may be distributed under the terms of the BSD license.
+# See README for more details.
+
+import os
+import subprocess
+
+from wpasupplicant import WpaSupplicant
+
+def check_config(config):
+    with open(config, "r") as f:
+        data = f.read()
+    if "update_config=1\n" not in data:
+        raise Exception("Missing update_config")
+    if "device_name=name\n" not in data:
+        raise Exception("Missing device_name")
+    if "eapol_version=2\n" not in data:
+        raise Exception("Missing eapol_version")
+    if "ctrl_interface=DIR=/var/run/wpa_supplicant GROUP=" not in data:
+        raise Exception("Missing ctrl_interface")
+    if "blob-base64-foo={" not in data:
+        raise Exception("Missing blob")
+    if "cred={" not in data:
+        raise Exception("Missing cred")
+    if "network={" not in data:
+        raise Exception("Missing network")
+    return data
+
+def test_wpas_config_file(dev):
+    """wpa_supplicant config file parsing/writing"""
+    config = "/tmp/test_wpas_config_file.conf"
+    if os.path.exists(config):
+        subprocess.call(['sudo', 'rm', config])
+
+    wpas = WpaSupplicant(global_iface='/tmp/wpas-wlan5')
+    try:
+        wpas.interface_add("wlan5", config=config)
+        initialized = True
+    except:
+        initialized = False
+    if initialized:
+        raise Exception("Missing config file did not result in an error")
+
+    try:
+        with open(config, "w") as f:
+            f.write("update_config=1 \t\r\n")
+            f.write("# foo\n")
+            f.write("\n")
+            f.write(" \t\reapol_version=2")
+            for i in range(0, 100):
+                f.write("                    ")
+            f.write("foo\n")
+            f.write("device_name=name#foo\n")
+
+        wpas.interface_add("wlan5", config=config)
+
+        id = wpas.add_network()
+        wpas.set_network_quoted(id, "ssid", "foo")
+        wpas.set_network_quoted(id, "psk", "12345678")
+        wpas.set_network(id, "bssid", "00:11:22:33:44:55")
+        wpas.set_network(id, "proto", "RSN")
+        wpas.set_network(id, "key_mgmt", "WPA-PSK-SHA256")
+        wpas.set_network(id, "pairwise", "CCMP")
+        wpas.set_network(id, "group", "CCMP")
+        wpas.set_network(id, "auth_alg", "OPEN")
+
+        id = wpas.add_cred()
+        wpas.set_cred(id, "priority", "3")
+        wpas.set_cred(id, "sp_priority", "6")
+        wpas.set_cred(id, "update_identifier", "4")
+        wpas.set_cred(id, "ocsp", "1")
+        wpas.set_cred(id, "eap", "TTLS")
+        wpas.set_cred(id, "req_conn_capab", "6:1234")
+        wpas.set_cred_quoted(id, "realm", "example.com")
+        wpas.set_cred_quoted(id, "provisioning_sp", "example.com")
+        wpas.set_cred(id, "roaming_consortium", "112233")
+        wpas.set_cred(id, "required_roaming_consortium", "112233")
+        wpas.set_cred_quoted(id, "roaming_partner",
+                             "roaming.example.net,1,127,*")
+        wpas.set_cred_quoted(id, "ca_cert", "/tmp/ca.pem")
+        wpas.set_cred_quoted(id, "username", "user")
+        wpas.set_cred_quoted(id, "password", "secret")
+        ev = wpas.wait_event(["CRED-MODIFIED 0 password"])
+
+        wpas.request("SET blob foo 12345678")
+
+        if "OK" not in wpas.request("SAVE_CONFIG"):
+            raise Exception("Failed to save configuration file")
+        if "OK" not in wpas.global_request("SAVE_CONFIG"):
+            raise Exception("Failed to save configuration file")
+
+        wpas.interface_remove("wlan5")
+        data1 = check_config(config)
+
+        wpas.interface_add("wlan5", config=config)
+        if len(wpas.list_networks()) != 1:
+            raise Exception("Unexpected number of networks")
+        if len(wpas.request("LIST_CREDS").splitlines()) != 2:
+            raise Exception("Unexpected number of credentials")
+
+        if "OK" not in wpas.request("SAVE_CONFIG"):
+            raise Exception("Failed to save configuration file")
+        data2 = check_config(config)
+
+        if data1 != data2:
+            raise Esception("Unexpected configuration change")
+
+    finally:
+        subprocess.call(['sudo', 'rm', config])

tests/hwsim/wpasupplicant.py

@@ -43,13 +43,13 @@ class WpaSupplicant:
             self.ctrl = None
             self.ifname = None
 
-    def interface_add(self, ifname, driver="nl80211", drv_params=None):
+    def interface_add(self, ifname, config="", driver="nl80211", drv_params=None):
         try:
             groups = subprocess.check_output(["id"])
             group = "admin" if "(admin)" in groups else "adm"
         except Exception, e:
             group = "admin"
-        cmd = "INTERFACE_ADD " + ifname + "\t\t" + driver + "\tDIR=/var/run/wpa_supplicant GROUP=" + group
+        cmd = "INTERFACE_ADD " + ifname + "\t" + config + "\t" + driver + "\tDIR=/var/run/wpa_supplicant GROUP=" + group
         if drv_params:
             cmd = cmd + '\t' + drv_params
         if "FAIL" in self.global_request(cmd):