[RFC 2/2] client: Add authorized property handling to characteristic attribute

[Grzegorz Kolodziejczyk <grzegorz.kolodziejczyk@codecoup.pl>]

This patch adds handling of authorized property to bluetoothctl.
---
 client/gatt.c | 46 ++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 46 insertions(+)

diff --git a/client/gatt.c b/client/gatt.c
index 6bf644c48..fffa86851 100644
--- a/client/gatt.c
+++ b/client/gatt.c
@@ -1432,6 +1432,30 @@ static gboolean chrc_notify_acquired_exists(const GDBusPropertyTable *property,
 	return FALSE;
 }
 
+static gboolean chrc_get_authorized(const GDBusPropertyTable *property,
+					DBusMessageIter *iter, void *data)
+{
+	struct chrc *chrc = data;
+	dbus_bool_t value;
+
+	value = chrc->authorized ? TRUE : FALSE;
+
+	dbus_message_iter_append_basic(iter, DBUS_TYPE_BOOLEAN, &value);
+
+	return TRUE;
+}
+
+static gboolean chrc_get_authorized_exists(const GDBusPropertyTable *property,
+								void *data)
+{
+	struct chrc *chrc = data;
+
+	if (chrc->authorization_req)
+		return TRUE;
+
+	return FALSE;
+}
+
 static const GDBusPropertyTable chrc_properties[] = {
 	{ "UUID", "s", chrc_get_uuid, NULL, NULL },
 	{ "Service", "o", chrc_get_service, NULL, NULL },
@@ -1442,6 +1466,8 @@ static const GDBusPropertyTable chrc_properties[] = {
 					chrc_write_acquired_exists },
 	{ "NotifyAcquired", "b", chrc_get_notify_acquired, NULL,
 					chrc_notify_acquired_exists },
+	{ "Authorized", "b", chrc_get_authorized, NULL,
+						chrc_get_authorized_exists },
 	{ }
 };
 
@@ -1665,6 +1691,15 @@ static void authorize_write_response(const char *input, void *user_data)
 
 	chrc->authorized = true;
 
+	/* Authorization check of prepare writes */
+	if (!chrc->value_len) {
+		reply = g_dbus_create_reply(pending_message, DBUS_TYPE_INVALID);
+		g_dbus_send_message(aad->conn, reply);
+		g_free(aad);
+
+		return;
+	}
+
 	errsv = parse_value_arg(&iter, &chrc->value, &chrc->value_len,
 							chrc->max_val_len);
 	if (errsv == -EINVAL) {
@@ -1701,8 +1736,16 @@ static DBusMessage *chrc_write_value(DBusConnection *conn, DBusMessage *msg,
 	DBusMessageIter iter;
 	char *str;
 	int errsv;
+	uint16_t offset = 0;
 
 	dbus_message_iter_init(msg, &iter);
+	/* Get offset only (second parameter) */
+	dbus_message_iter_next(&iter);
+
+	parse_options(&iter, &offset, NULL, NULL, NULL);
+
+	if (chrc->authorization_req && offset == 0)
+		chrc->authorized = false;
 
 	if (chrc->authorization_req && !chrc->authorized) {
 		struct authorize_attribute_data *aad;
@@ -1722,6 +1765,9 @@ static DBusMessage *chrc_write_value(DBusConnection *conn, DBusMessage *msg,
 		return NULL;
 	}
 
+	/* Rewind to value parameter */
+	dbus_message_iter_init(msg, &iter);
+
 	errsv = parse_value_arg(&iter, &chrc->value, &chrc->value_len,
 							chrc->max_val_len);
 	if (errsv == -EINVAL) {
-- 
2.13.6