android/gatt: Handle write characteristic client command

This adds write characteristic client command handling.

diff --git a/android/gatt.c b/android/gatt.c
index dbcb23a..61746b1 100644 (file)
--- a/android/gatt.c
+++ b/android/gatt.c
@@ -1499,13 +1499,118 @@ failed:
                                        cmd->srvc_id.is_primary);
 }
 
+struct write_char_data {
+       int32_t conn_id;
+       struct element_id srvc_id;
+       struct element_id char_id;
+       uint8_t primary;
+};
+
+static void send_client_write_char_notify(int32_t status, int32_t conn_id,
+                                       struct element_id *srvc_id,
+                                       struct element_id *char_id,
+                                       uint8_t primary)
+{
+       struct hal_ev_gatt_client_write_characteristic ev;
+
+       memset(&ev, 0, sizeof(ev));
+
+       ev.conn_id = conn_id;
+       ev.status = status;
+
+       ev.data.srvc_id.inst_id = srvc_id->instance;
+       uuid2android(&srvc_id->uuid, ev.data.srvc_id.uuid);
+       ev.data.srvc_id.is_primary = primary;
+
+       ev.data.char_id.inst_id = char_id->instance;
+       uuid2android(&char_id->uuid, ev.data.srvc_id.uuid);
+
+       ipc_send_notif(hal_ipc, HAL_SERVICE_ID_GATT,
+                                       HAL_EV_GATT_CLIENT_WRITE_CHARACTERISTIC,
+                                       sizeof(ev), &ev);
+}
+
+static void write_char_cb(guint8 status, const guint8 *pdu, guint16 len,
+                                                       gpointer user_data)
+{
+       struct write_char_data *data = user_data;
+
+       send_client_write_char_notify(status, data->conn_id, &data->srvc_id,
+                                       &data->char_id, data->primary);
+
+       free(data);
+}
+
 static void handle_client_write_characteristic(const void *buf, uint16_t len)
 {
+       const struct hal_cmd_gatt_client_write_characteristic *cmd = buf;
+       struct write_char_data *cb_data;
+       struct characteristic *ch;
+       struct gatt_device *dev;
+       struct service *srvc;
+       struct element_id srvc_id;
+       struct element_id char_id;
+       uint8_t status;
+
        DBG("");
 
+       if (len != sizeof(*cmd) + cmd->len) {
+               error("Invalid write char size (%u bytes), terminating", len);
+               raise(SIGTERM);
+               return;
+       }
+
+       hal_srvc_id_to_element_id(&cmd->srvc_id, &srvc_id);
+       hal_gatt_id_to_element_id(&cmd->gatt_id, &char_id);
+
+       if (!find_service(cmd->conn_id, &srvc_id, &dev, &srvc)) {
+               status = HAL_STATUS_FAILED;
+               goto failed;
+       }
+
+       /* search characteristics by instance id */
+       ch = queue_find(srvc->chars, match_char_by_element_id, &char_id);
+       if (!ch) {
+               error("gatt: Characteristic with inst_id: %d not found",
+                                                       cmd->gatt_id.inst_id);
+               status = HAL_STATUS_FAILED;
+               goto failed;
+       }
+
+       cb_data = new0(struct write_char_data, 1);
+       if (!cb_data) {
+               error("gatt: Cannot allocate call data");
+               status = HAL_STATUS_NOMEM;
+               goto failed;
+       }
+
+       cb_data->conn_id = cmd->conn_id;
+       cb_data->primary = cmd->srvc_id.is_primary;
+       cb_data->srvc_id = srvc_id;
+       cb_data->char_id = char_id;
+
+       if (!gatt_write_char(dev->attrib, ch->ch.value_handle, cmd->value,
+                                       cmd->len, write_char_cb, cb_data)) {
+               error("gatt: Cannot read characteristic with inst_id: %d",
+                                                       cmd->gatt_id.inst_id);
+               status = HAL_STATUS_FAILED;
+               free(cb_data);
+               goto failed;
+       }
+
+       status = HAL_STATUS_SUCCESS;
+
+failed:
        ipc_send_rsp(hal_ipc, HAL_SERVICE_ID_GATT,
-                                       HAL_OP_GATT_CLIENT_WRITE_CHARACTERISTIC,
-                                       HAL_STATUS_FAILED);
+                       HAL_OP_GATT_CLIENT_WRITE_CHARACTERISTIC, status);
+
+       /* We should send notification with service, characteristic id in case
+        * of errors.
+        */
+       if (status != HAL_STATUS_SUCCESS)
+               send_client_write_char_notify(GATT_FAILURE, cmd->conn_id,
+                                               &srvc_id, &char_id,
+                                               cmd->srvc_id.is_primary);
 }
 
 static void handle_client_read_descriptor(const void *buf, uint16_t len)