It will register notification and indication handler for given parameters.
Proper callback should be send with status of registration.
---
android/gatt.c | 159 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++-
1 file changed, 157 insertions(+), 2 deletions(-)
diff --git a/android/gatt.c b/android/gatt.c
index 2cd0731..0a7bca0 100644
--- a/android/gatt.c
+++ b/android/gatt.c
@@ -215,6 +215,54 @@ static bool match_char_by_higher_inst_id(const void *data,
return inst_id < ch->id.instance;
}
+static bool match_char_by_instance(const void *data, const void *user_data)
+{
+ const struct characteristic *ch = data;
+ uint8_t inst_id = PTR_TO_INT(user_data);
+
+ return inst_id == ch->id.instance;
+}
+
+static bool match_notification(const void *a, const void *b)
+{
+ const struct notification_data *a1 = a;
+ const struct notification_data *b1 = b;
+
+ if (bacmp(&a1->dev->bdaddr, &b1->dev->bdaddr))
+ return false;
+ if (memcmp(&a1->ch, &b1->ch, sizeof(a1->ch)))
+ return false;
+ if (memcmp(&a1->service, &b1->service, sizeof(a1->service)))
+ return false;
+
+ return true;
+}
+
+static void destroy_notification(void *data)
+{
+ struct notification_data *notification = data;
+
+ if (--notification->ref)
+ return;
+
+ queue_remove_if(notification->client->notifications, match_notification,
+ notification);
+ free(notification);
+}
+
+static void unregister_notification(void *data)
+{
+ struct notification_data *notification = data;
+
+ if (notification->notif_id)
+ g_attrib_unregister(notification->dev->attrib,
+ notification->notif_id);
+
+ if (notification->ind_id)
+ g_attrib_unregister(notification->dev->attrib,
+ notification->ind_id);
+}
+
static void destroy_device(void *data)
{
struct gatt_device *dev = data;
@@ -231,8 +279,16 @@ static void destroy_gatt_client(void *data)
{
struct gatt_client *client = data;
- if (client->notifications)
+ if (client->notifications) {
+ while (queue_peek_head(client->notifications)) {
+ struct notification_data *notification;
+
+ notification = queue_pop_head(client->notifications);
+ unregister_notification(notification);
+ }
+
queue_destroy(client->notifications, free);
+ }
free(client);
}
@@ -1350,11 +1406,110 @@ static void handle_client_execute_write(const void *buf, uint16_t len)
static void handle_client_register_for_notification(const void *buf,
uint16_t len)
{
+ const struct hal_cmd_gatt_client_register_for_notification *cmd = buf;
+ struct notification_data *notification;
+ char uuid[MAX_LEN_UUID_STR];
+ struct gatt_client *client;
+ struct characteristic *c;
+ struct element_id match_id;
+ struct gatt_device *dev;
+ struct service *service;
+ char addr_str[18];
+ uint8_t status;
+ bdaddr_t addr;
+
DBG("");
+ client = find_client_by_id(cmd->client_if);
+ if (!client) {
+ error("gatt: client %d not registered", cmd->client_if);
+ status = HAL_STATUS_FAILED;
+ goto failed;
+ }
+
+ android2bdaddr((bdaddr_t *)&cmd->bdaddr, &addr);
+ ba2str(&addr, addr_str);
+
+ dev = queue_find(conn_list, match_dev_by_bdaddr, &addr);
+ if (!dev) {
+ error("gatt: device %s not found in connected devices list",
+ addr_str);
+ status = HAL_STATUS_FAILED;
+ goto failed;
+ }
+
+ hal_srvc_id_to_element_id(&cmd->srvc_id, &match_id);
+ service = queue_find(dev->services, match_srvc_by_element_id,
+ &match_id);
+ bt_uuid_to_string(&match_id.uuid, uuid, MAX_LEN_UUID_STR);
+ if (!service) {
+ error("gatt: can't register notification, service not found");
+ status = HAL_STATUS_FAILED;
+ goto failed;
+ }
+
+ c = queue_find(service->chars, match_char_by_instance,
+ INT_TO_PTR(cmd->char_id.inst_id));
+ if (!c) {
+ error("gatt: can't register notification: no characteristic");
+ status = HAL_STATUS_FAILED;
+ goto failed;
+ }
+
+ notification = new0(struct notification_data, 1);
+ if (!notification) {
+ error("gatt: failed to allocate memory for notification");
+ status = HAL_STATUS_FAILED;
+ goto failed;
+ }
+
+ memcpy(¬ification->ch, &cmd->char_id, sizeof(notification->ch));
+ memcpy(¬ification->service, &cmd->srvc_id,
+ sizeof(notification->service));
+ notification->dev = dev;
+ notification->client = client;
+
+ if (queue_find(client->notifications, match_notification,
+ notification)) {
+ DBG("can't register for notification, already registered");
+ free(notification);
+ status = HAL_STATUS_SUCCESS;
+ goto failed;
+ }
+
+ notification->notif_id = g_attrib_register(dev->attrib,
+ ATT_OP_HANDLE_NOTIFY,
+ c->ch.value_handle,
+ NULL, notification,
+ destroy_notification);
+ if (!notification->notif_id) {
+ free(notification);
+ status = HAL_STATUS_FAILED;
+ goto failed;
+ }
+
+ notification->ind_id = g_attrib_register(dev->attrib, ATT_OP_HANDLE_IND,
+ c->ch.value_handle,
+ NULL, notification,
+ destroy_notification);
+ if (!notification->ind_id) {
+ g_attrib_unregister(dev->attrib, notification->notif_id);
+ free(notification);
+ status = HAL_STATUS_FAILED;
+ goto failed;
+ }
+
+ notification->ref = 2;
+
+ queue_push_tail(client->notifications, notification);
+
+ status = HAL_STATUS_SUCCESS;
+
+failed:
+ /* TODO: send callback with notification enabled/disabled */
ipc_send_rsp(hal_ipc, HAL_SERVICE_ID_GATT,
HAL_OP_GATT_CLIENT_REGISTER_FOR_NOTIFICATION,
- HAL_STATUS_FAILED);
+ status);
}
static void handle_client_deregister_for_notification(const void *buf,
--
1.8.3.1
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