[RFC 12/16] android/gatt: Add descriptor implementation

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It will add characteristic descriptor attribute to local database.
---
 android/gatt.c | 34 +++++++++++++++++++++++++++++++++-
 1 file changed, 33 insertions(+), 1 deletion(-)

diff --git a/android/gatt.c b/android/gatt.c
index 25cd7f1..acaa2a9 100644
--- a/android/gatt.c
+++ b/android/gatt.c
@@ -2806,10 +2806,42 @@ failed:
 
 static void handle_server_add_descriptor(const void *buf, uint16_t len)
 {
+	const struct hal_cmd_gatt_server_add_descriptor *cmd = buf;
+	struct hal_ev_gatt_server_descriptor_added ev;
+	struct gatt_server *server;
+	bt_uuid_t uuid;
+	uint8_t status;
+
 	DBG("");
 
+	server = find_server_by_id(cmd->server_if);
+	if (!server) {
+		status = HAL_STATUS_FAILED;
+		goto failed;
+	}
+
+	android2uuid(cmd->uuid, &uuid);
+
+	ev.descr_handle = gatt_db_new_char_descriptor(gatt_db,
+							cmd->service_handle,
+							&uuid, cmd->permissions,
+							NULL, NULL, NULL);
+	if (!ev.descr_handle)
+		status = HAL_STATUS_FAILED;
+	else
+		status = HAL_STATUS_SUCCESS;
+
+failed:
+	ev.server_if = cmd->server_if;
+	ev.srvc_handle = cmd->service_handle;
+	memcpy(ev.uuid, cmd->uuid, sizeof(cmd->uuid));
+	ev.status = status == HAL_STATUS_SUCCESS ? GATT_SUCCESS : GATT_FAILURE;
+
+	ipc_send_notif(hal_ipc, HAL_SERVICE_ID_GATT,
+			HAL_EV_GATT_SERVER_DESCRIPTOR_ADDED, sizeof(ev), &ev);
+
 	ipc_send_rsp(hal_ipc, HAL_SERVICE_ID_GATT,
-			HAL_OP_GATT_SERVER_ADD_DESCRIPTOR, HAL_STATUS_FAILED);
+				HAL_OP_GATT_SERVER_ADD_DESCRIPTOR, status);
 }
 
 static void handle_server_start_service(const void *buf, uint16_t len)
-- 
1.8.5.3

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