Hi Giacinto,

@@ -69,19 +78,57 @@ static void lte_load_settings(struct ofono_lte *lte)
                return;
        }
- apn = g_key_file_get_string(lte->settings, SETTINGS_GROUP ,
-                                       DEFAULT_APN_KEY, NULL);
-       if (apn) {
+       apn = g_key_file_get_string(lte->settings, SETTINGS_GROUP,
+                               LTE_APN, NULL);
+       proto_str = g_key_file_get_string(lte->settings, SETTINGS_GROUP,
+                               LTE_PROTO, NULL);
+       auth_method_str = g_key_file_get_string(lte->settings, SETTINGS_GROUP,
+                               LTE_AUTH_METHOD, NULL);
+       username = g_key_file_get_string(lte->settings, SETTINGS_GROUP,
+                               LTE_USERNAME, NULL);
+       password = g_key_file_get_string(lte->settings, SETTINGS_GROUP,
+                               LTE_PASSWORD, NULL);
+       if (apn)
                strcpy(lte->info.apn, apn);
-               g_free(apn);

So we may want to be more paranoid here, similar to how load_context in gprs.c works.

-       }
+
+       if (proto_str == NULL)
+               proto_str = g_strdup("ip");
+
+       /* this must have a valid default */
+       if (!gprs_proto_from_string(proto_str, &lte->info.proto))
+               lte->info.proto = OFONO_GPRS_PROTO_IP;
+
+       if (auth_method_str == NULL)
+               auth_method_str = g_strdup("none");
+
+       /* this must have a valid default */
+       if (!gprs_auth_method_from_string(auth_method_str,
+                                                       &lte->info.auth_method))
+               lte->info.auth_method = OFONO_GPRS_AUTH_METHOD_NONE;
+
+       if (username)
+               strcpy(lte->info.username, username);
+
+       if (password)
+               strcpy(lte->info.password, password);
+

Again, might want to be more paranoid here and ensure username / password don't overflow buffers.

+       g_free(apn);
+       g_free(proto_str);
+       g_free(auth_method_str);
+       g_free(username);
+       g_free(password);
  }

<snip>

  static void lte_set_default_attach_info_cb(const struct ofono_error *error,
-                                               void *data)
+                                                               void *data)
  {
        struct ofono_lte *lte = data;
        const char *path = __ofono_atom_get_path(lte->atom);
        DBusConnection *conn = ofono_dbus_get_connection();
        DBusMessage *reply;
-       const char *apn = lte->info.apn;
+       const char *key;
+       const char *propstr = NULL;
DBG("%s error %d", path, error->type); @@ -118,55 +173,64 @@ static void lte_set_default_attach_info_cb(const struct ofono_error *error,
                return;
        }
- g_strlcpy(lte->info.apn, lte->pending_info.apn,
-                       OFONO_GPRS_MAX_APN_LENGTH + 1);
+       if (!g_str_equal(lte->pending_info.apn, lte->info.apn)) {
+               g_strlcpy(lte->info.apn, lte->pending_info.apn,
+                                       OFONO_GPRS_MAX_APN_LENGTH + 1);
+               key = LTE_APN;
+               propstr = lte->info.apn;
+       } else if (lte->pending_info.proto != lte->info.proto) {
+               lte->info.proto = lte->pending_info.proto;
+               key = LTE_PROTO;
+               propstr = gprs_proto_to_string(lte->info.proto);
+       } else if (lte->pending_info.auth_method != lte->info.auth_method) {
+               lte->info.auth_method = lte->pending_info.auth_method;
+               key = LTE_AUTH_METHOD;
+               propstr = gprs_auth_method_to_string(lte->info.auth_method);
+
+       } else if (!g_str_equal(lte->pending_info.username,
+                                                       lte->info.username)) {
+               g_strlcpy(lte->info.username, lte->pending_info.username,
+                                       OFONO_GPRS_MAX_USERNAME_LENGTH + 1);
+               key = LTE_USERNAME;
+               propstr = lte->info.username;
+       } else if (!g_str_equal(lte->pending_info.password,
+                                                       lte->info.password)) {
+               g_strlcpy(lte->info.password, lte->pending_info.password,
+                                       OFONO_GPRS_MAX_PASSWORD_LENGTH + 1);
+               key = LTE_PASSWORD;
+               propstr = lte->info.password;
+       } else {
+               /*
+                * this should never happen, because no property change is
+                * checked before.
+                * Neverthelss, in this case it will answer the D-Bus message
+                * but emit no signal
+                */
+               key = NULL;
+       }

Ugh. I'm not really liking this at all. The property name and the new value are already available inside the dbus_message object (e.g. lte->pending). There's nothing wrong with parsing that message again or simply store pointers to the data inside the dbus-message.

+
+       reply = dbus_message_new_method_return(lte->pending);
+       __ofono_dbus_pending_reply(&lte->pending, reply);
+
+       if(!key)
+               return;
if (lte->settings) {
-               if (strlen(lte->info.apn) == 0)
-                       /* Clear entry on empty APN. */
-                       g_key_file_remove_key(lte->settings, SETTINGS_GROUP,
-                                               DEFAULT_APN_KEY, NULL);
+               if (!*propstr)
+                       /* Clear entry on empty string. */
+                       g_key_file_remove_key(lte->settings,
+                               SETTINGS_GROUP, key, NULL);
                else
-                       g_key_file_set_string(lte->settings, SETTINGS_GROUP,
-                                               DEFAULT_APN_KEY, lte->info.apn);
+                       g_key_file_set_string(lte->settings,
+                               SETTINGS_GROUP, key, propstr);
storage_sync(lte->imsi, SETTINGS_STORE, lte->settings);
        }

I can see this applying for APN and maybe Username/Password. But not the other settings...?

- reply = dbus_message_new_method_return(lte->pending);
-       __ofono_dbus_pending_reply(&lte->pending, reply);
-
        ofono_dbus_signal_property_changed(conn, path,
                                        OFONO_CONNECTION_CONTEXT_INTERFACE,
-                                       DEFAULT_APN_KEY,
-                                       DBUS_TYPE_STRING, &apn);
-}
-
-static DBusMessage *lte_set_default_apn(struct ofono_lte *lte,
-                               DBusConnection *conn, DBusMessage *msg,
-                               const char *apn)
-{
-       if (lte->driver->set_default_attach_info == NULL)
-               return __ofono_error_not_implemented(msg);
-
-       if (lte->pending)
-               return __ofono_error_busy(msg);
-
-       if (g_str_equal(apn, lte->info.apn))
-               return dbus_message_new_method_return(msg);
-
-       /* We do care about empty value: it can be used for reset. */
-       if (is_valid_apn(apn) == FALSE && apn[0] != '\0')
-               return __ofono_error_invalid_format(msg);
-
-       lte->pending = dbus_message_ref(msg);
-
-       g_strlcpy(lte->pending_info.apn, apn, OFONO_GPRS_MAX_APN_LENGTH + 1);
-
-       lte->driver->set_default_attach_info(lte, &lte->pending_info,
-                                       lte_set_default_attach_info_cb, lte);
-
-       return NULL;
+                                       key,
+                                       DBUS_TYPE_STRING, &propstr);
  }
static DBusMessage *lte_set_property(DBusConnection *conn,
@@ -177,6 +241,14 @@ static DBusMessage *lte_set_property(DBusConnection *conn,
        DBusMessageIter var;
        const char *property;
        const char *str;
+       enum ofono_gprs_auth_method auth_method;
+       enum ofono_gprs_proto proto;
+
+       if (lte->driver->set_default_attach_info == NULL)
+               return __ofono_error_not_implemented(msg);
+
+       if (lte->pending)
+               return __ofono_error_busy(msg);
if (!dbus_message_iter_init(msg, &iter))
                return __ofono_error_invalid_args(msg);
@@ -192,16 +264,64 @@ static DBusMessage *lte_set_property(DBusConnection *conn,
dbus_message_iter_recurse(&iter, &var); - if (!strcmp(property, DEFAULT_APN_KEY)) {
-               if (dbus_message_iter_get_arg_type(&var) != DBUS_TYPE_STRING)
-                       return __ofono_error_invalid_args(msg);
+       if (dbus_message_iter_get_arg_type(&var) != DBUS_TYPE_STRING)
+               return __ofono_error_invalid_args(msg);
+
+       dbus_message_iter_get_basic(&var, &str);
- dbus_message_iter_get_basic(&var, &str);
+       if ((strcmp(property, LTE_APN) == 0)) {
- return lte_set_default_apn(lte, conn, msg, str);
-       }
+               if (g_str_equal(str, lte->info.apn))
+                       return dbus_message_new_method_return(msg);
+
+               /* We do care about empty value: it can be used for reset. */
+               if (is_valid_apn(str) == FALSE && str[0] != '\0')
+                       return __ofono_error_invalid_format(msg);
+
+               g_strlcpy(lte->pending_info.apn, str,
+                                       OFONO_GPRS_MAX_APN_LENGTH + 1);
+
+       } else if ((strcmp(property, LTE_PROTO) == 0)) {
+
+               if (!gprs_proto_from_string(str, &proto))
+                       return __ofono_error_invalid_format(msg);
+
+               if (proto == lte->info.proto)
+                       return dbus_message_new_method_return(msg);
+
+               lte->pending_info.proto = proto;
+
+       } else if (strcmp(property, LTE_AUTH_METHOD) == 0) {
+
+               if (!gprs_auth_method_from_string(str, &auth_method))
+                       return __ofono_error_invalid_format(msg);
+
+               if (proto == lte->info.proto)
+                       return dbus_message_new_method_return(msg);

Umm, method?  How well tested is this submission?

- return __ofono_error_invalid_args(msg);
+       } else if (strcmp(property, LTE_USERNAME) == 0) {
+
+               if (g_str_equal(str, lte->info.username))
+                       return dbus_message_new_method_return(msg);
+
+               g_strlcpy(lte->pending_info.username, str,
+                                       OFONO_GPRS_MAX_USERNAME_LENGTH + 1);
+
+       } else if (strcmp(property, LTE_PASSWORD) == 0) {
+
+               if (g_str_equal(str, lte->info.password))
+                       return dbus_message_new_method_return(msg);
+
+               g_strlcpy(lte->pending_info.password, str,
+                                       OFONO_GPRS_MAX_PASSWORD_LENGTH + 1);
+
+       } else
+               return __ofono_error_invalid_args(msg);
+
+       lte->pending = dbus_message_ref(msg);
+       lte->driver->set_default_attach_info(lte, &lte->pending_info,
+                                       lte_set_default_attach_info_cb, lte);
+       return dbus_message_ref(msg);;

Your reference counting is completely wrong here. You might want to run valgrind and do some testing...

  }
static const GDBusMethodTable lte_methods[] = {
@@ -374,6 +494,16 @@ void *ofono_lte_get_data(const struct ofono_lte *lte)
        return lte->driver_data;
  }
+void ofono_lte_set_reg_info(struct ofono_modem *modem)
+{
+       struct ofono_lte *lte = __ofono_atom_find(OFONO_ATOM_TYPE_LTE, modem);
+
+       if(!lte || !lte->driver || !lte->driver->set_reg_info)
+               return;
+
+       lte->driver->set_reg_info(lte, &lte->info);
+}
+

Given that you have somewhat sane defaults for everything, I'm not convinced now that this is even needed...

Regards,
-Denis
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