| /****************************************************************************** |
| * |
| * Copyright 1999-2012 Broadcom Corporation |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| * |
| ******************************************************************************/ |
| |
| /****************************************************************************** |
| * |
| * this file contains GATT interface functions |
| * |
| ******************************************************************************/ |
| #include "bt_target.h" |
| |
| #include <base/strings/string_number_conversions.h> |
| #include <stdio.h> |
| #include <string.h> |
| #include "bt_common.h" |
| #include "btm_int.h" |
| #include "device/include/controller.h" |
| #include "gatt_api.h" |
| #include "gatt_int.h" |
| #include "l2c_api.h" |
| #include "stack/gatt/connection_manager.h" |
| |
| using bluetooth::Uuid; |
| |
| extern bool BTM_BackgroundConnectAddressKnown(const RawAddress& address); |
| /** |
| * Add an service handle range to the list in decending order of the start |
| * handle. Return reference to the newly added element. |
| **/ |
| tGATT_HDL_LIST_ELEM& gatt_add_an_item_to_list(uint16_t s_handle) { |
| auto lst_ptr = gatt_cb.hdl_list_info; |
| auto it = lst_ptr->begin(); |
| for (; it != lst_ptr->end(); it++) { |
| if (s_handle > it->asgn_range.s_handle) break; |
| } |
| |
| auto rit = lst_ptr->emplace(it); |
| return *rit; |
| } |
| |
| /***************************************************************************** |
| * |
| * GATT SERVER API |
| * |
| *****************************************************************************/ |
| /******************************************************************************* |
| * |
| * Function GATTS_AddHandleRange |
| * |
| * Description This function add the allocated handles range for the |
| * specified application UUID, service UUID and service |
| * instance |
| * |
| * Parameter p_hndl_range: pointer to allocated handles information |
| * |
| **/ |
| |
| void GATTS_AddHandleRange(tGATTS_HNDL_RANGE* p_hndl_range) { |
| gatt_add_an_item_to_list(p_hndl_range->s_handle); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATTS_NVRegister |
| * |
| * Description Application manager calls this function to register for |
| * NV save callback function. There can be one and only one |
| * NV save callback function. |
| * |
| * Parameter p_cb_info : callback informaiton |
| * |
| * Returns true if registered OK, else false |
| * |
| ******************************************************************************/ |
| bool GATTS_NVRegister(tGATT_APPL_INFO* p_cb_info) { |
| bool status = false; |
| if (p_cb_info) { |
| gatt_cb.cb_info = *p_cb_info; |
| status = true; |
| gatt_init_srv_chg(); |
| } |
| |
| return status; |
| } |
| |
| static uint16_t compute_service_size(btgatt_db_element_t* service, int count) { |
| int db_size = 0; |
| btgatt_db_element_t* el = service; |
| |
| for (int i = 0; i < count; i++, el++) |
| if (el->type == BTGATT_DB_PRIMARY_SERVICE || |
| el->type == BTGATT_DB_SECONDARY_SERVICE || |
| el->type == BTGATT_DB_DESCRIPTOR || |
| el->type == BTGATT_DB_INCLUDED_SERVICE) |
| db_size += 1; |
| else if (el->type == BTGATT_DB_CHARACTERISTIC) |
| db_size += 2; |
| else |
| LOG(ERROR) << __func__ << ": Unknown element type: " << el->type; |
| |
| return db_size; |
| } |
| |
| static bool is_gatt_attr_type(const Uuid& uuid) { |
| if (uuid == Uuid::From16Bit(GATT_UUID_PRI_SERVICE) || |
| uuid == Uuid::From16Bit(GATT_UUID_SEC_SERVICE) || |
| uuid == Uuid::From16Bit(GATT_UUID_INCLUDE_SERVICE) || |
| uuid == Uuid::From16Bit(GATT_UUID_CHAR_DECLARE)) { |
| return true; |
| } |
| return false; |
| } |
| |
| /** Update the the last service info for the service list info */ |
| static void gatt_update_last_srv_info() { |
| gatt_cb.last_service_handle = 0; |
| |
| for (tGATT_SRV_LIST_ELEM& el : *gatt_cb.srv_list_info) { |
| gatt_cb.last_service_handle = el.s_hdl; |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATTS_AddService |
| * |
| * Description This function is called to add GATT service. |
| * |
| * Parameter gatt_if : application if |
| * service : pseudo-representation of service and it's content |
| * count : size of service |
| * |
| * Returns on success GATT_SERVICE_STARTED is returned, and |
| * attribute_handle field inside service elements are filled. |
| * on error error status is returned. |
| * |
| ******************************************************************************/ |
| uint16_t GATTS_AddService(tGATT_IF gatt_if, btgatt_db_element_t* service, |
| int count) { |
| uint16_t s_hdl = 0; |
| bool save_hdl = false; |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| |
| bool is_pri = (service->type == BTGATT_DB_PRIMARY_SERVICE) ? true : false; |
| Uuid svc_uuid = service->uuid; |
| |
| LOG(INFO) << __func__; |
| |
| if (!p_reg) { |
| LOG(ERROR) << "Inavlid gatt_if=" << +gatt_if; |
| return GATT_INTERNAL_ERROR; |
| } |
| |
| uint16_t num_handles = compute_service_size(service, count); |
| |
| if (svc_uuid == Uuid::From16Bit(UUID_SERVCLASS_GATT_SERVER)) { |
| s_hdl = gatt_cb.hdl_cfg.gatt_start_hdl; |
| } else if (svc_uuid == Uuid::From16Bit(UUID_SERVCLASS_GAP_SERVER)) { |
| s_hdl = gatt_cb.hdl_cfg.gap_start_hdl; |
| } else { |
| if (!gatt_cb.hdl_list_info->empty()) { |
| s_hdl = gatt_cb.hdl_list_info->front().asgn_range.e_handle + 1; |
| } |
| |
| if (s_hdl < gatt_cb.hdl_cfg.app_start_hdl) |
| s_hdl = gatt_cb.hdl_cfg.app_start_hdl; |
| |
| save_hdl = true; |
| } |
| |
| /* check for space */ |
| if (num_handles > (0xFFFF - s_hdl + 1)) { |
| LOG(ERROR) << __func__ << ": no handles, s_hdl=" << +s_hdl |
| << " needed=" << num_handles; |
| return GATT_INTERNAL_ERROR; |
| } |
| |
| tGATT_HDL_LIST_ELEM& list = gatt_add_an_item_to_list(s_hdl); |
| list.asgn_range.app_uuid128 = p_reg->app_uuid128; |
| list.asgn_range.svc_uuid = svc_uuid; |
| list.asgn_range.s_handle = s_hdl; |
| list.asgn_range.e_handle = s_hdl + num_handles - 1; |
| list.asgn_range.is_primary = is_pri; |
| |
| if (save_hdl) { |
| if (gatt_cb.cb_info.p_nv_save_callback) |
| (*gatt_cb.cb_info.p_nv_save_callback)(true, &list.asgn_range); |
| } |
| |
| gatts_init_service_db(list.svc_db, svc_uuid, is_pri, s_hdl, num_handles); |
| |
| VLOG(1) << __func__ << ": handles needed=" << num_handles |
| << ", s_hdl=" << loghex(list.asgn_range.s_handle) |
| << ", e_hdl=" << loghex(list.asgn_range.e_handle) |
| << ", uuid=" << list.asgn_range.svc_uuid |
| << ", is_primary=" << +list.asgn_range.is_primary; |
| |
| service->attribute_handle = s_hdl; |
| |
| btgatt_db_element_t* el = service + 1; |
| for (int i = 0; i < count - 1; i++, el++) { |
| const Uuid& uuid = el->uuid; |
| |
| if (el->type == BTGATT_DB_CHARACTERISTIC) { |
| /* data validity checking */ |
| if (((el->properties & GATT_CHAR_PROP_BIT_AUTH) && |
| !(el->permissions & GATT_WRITE_SIGNED_PERM)) || |
| ((el->permissions & GATT_WRITE_SIGNED_PERM) && |
| !(el->properties & GATT_CHAR_PROP_BIT_AUTH))) { |
| VLOG(1) << "Invalid configuration property=" << loghex(el->properties) |
| << ", perm=" << loghex(el->permissions); |
| return GATT_INTERNAL_ERROR; |
| } |
| |
| if (is_gatt_attr_type(uuid)) { |
| LOG(ERROR) << __func__ |
| << ": attept to add characteristic with UUID equal to GATT " |
| "Attribute Type " |
| << uuid; |
| return GATT_INTERNAL_ERROR; |
| } |
| |
| el->attribute_handle = gatts_add_characteristic( |
| list.svc_db, el->permissions, el->properties, uuid); |
| } else if (el->type == BTGATT_DB_DESCRIPTOR) { |
| if (is_gatt_attr_type(uuid)) { |
| LOG(ERROR) << __func__ |
| << ": attept to add descriptor with UUID equal to GATT " |
| "Attribute Type " |
| << uuid; |
| return GATT_INTERNAL_ERROR; |
| } |
| |
| el->attribute_handle = |
| gatts_add_char_descr(list.svc_db, el->permissions, uuid); |
| } else if (el->type == BTGATT_DB_INCLUDED_SERVICE) { |
| tGATT_HDL_LIST_ELEM* p_incl_decl; |
| p_incl_decl = gatt_find_hdl_buffer_by_handle(el->attribute_handle); |
| if (p_incl_decl == nullptr) { |
| VLOG(1) << "Included Service not created"; |
| return GATT_INTERNAL_ERROR; |
| } |
| |
| el->attribute_handle = gatts_add_included_service( |
| list.svc_db, p_incl_decl->asgn_range.s_handle, |
| p_incl_decl->asgn_range.e_handle, p_incl_decl->asgn_range.svc_uuid); |
| } |
| } |
| |
| LOG(INFO) << __func__ << ": service parsed correctly, now starting"; |
| |
| /*this is a new application service start */ |
| |
| // find a place for this service in the list |
| auto lst_ptr = gatt_cb.srv_list_info; |
| auto it = lst_ptr->begin(); |
| for (; it != lst_ptr->end(); it++) { |
| if (list.asgn_range.s_handle < it->s_hdl) break; |
| } |
| auto rit = lst_ptr->emplace(it); |
| |
| tGATT_SRV_LIST_ELEM& elem = *rit; |
| elem.gatt_if = gatt_if; |
| elem.s_hdl = list.asgn_range.s_handle; |
| elem.e_hdl = list.asgn_range.e_handle; |
| elem.p_db = &list.svc_db; |
| elem.is_primary = list.asgn_range.is_primary; |
| |
| elem.app_uuid = list.asgn_range.app_uuid128; |
| elem.type = list.asgn_range.is_primary ? GATT_UUID_PRI_SERVICE |
| : GATT_UUID_SEC_SERVICE; |
| |
| if (elem.type == GATT_UUID_PRI_SERVICE) { |
| Uuid* p_uuid = gatts_get_service_uuid(elem.p_db); |
| elem.sdp_handle = gatt_add_sdp_record(*p_uuid, elem.s_hdl, elem.e_hdl); |
| } else { |
| elem.sdp_handle = 0; |
| } |
| |
| gatt_update_last_srv_info(); |
| |
| VLOG(1) << __func__ << ": allocated el s_hdl=" << loghex(elem.s_hdl) |
| << ", e_hdl=" << loghex(elem.e_hdl) << ", type=" << loghex(elem.type) |
| << ", sdp_hdl=" << loghex(elem.sdp_handle); |
| |
| gatt_proc_srv_chg(); |
| |
| return GATT_SERVICE_STARTED; |
| } |
| |
| bool is_active_service(const Uuid& app_uuid128, Uuid* p_svc_uuid, |
| uint16_t start_handle) { |
| for (auto& info : *gatt_cb.srv_list_info) { |
| Uuid* p_this_uuid = gatts_get_service_uuid(info.p_db); |
| |
| if (p_this_uuid && app_uuid128 == info.app_uuid && |
| *p_svc_uuid == *p_this_uuid && (start_handle == info.s_hdl)) { |
| LOG(ERROR) << "Active Service Found: " << *p_svc_uuid; |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATTS_DeleteService |
| * |
| * Description This function is called to delete a service. |
| * |
| * Parameter gatt_if : application interface |
| * p_svc_uuid : service UUID |
| * start_handle : start handle of the service |
| * |
| * Returns true if the operation succeeded, false if the handle block |
| * was not found. |
| * |
| ******************************************************************************/ |
| bool GATTS_DeleteService(tGATT_IF gatt_if, Uuid* p_svc_uuid, |
| uint16_t svc_inst) { |
| VLOG(1) << __func__; |
| |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| if (p_reg == NULL) { |
| LOG(ERROR) << "Applicaiton not foud"; |
| return false; |
| } |
| |
| auto it = |
| gatt_find_hdl_buffer_by_app_id(p_reg->app_uuid128, p_svc_uuid, svc_inst); |
| if (it == gatt_cb.hdl_list_info->end()) { |
| LOG(ERROR) << "No Service found"; |
| return false; |
| } |
| |
| gatt_proc_srv_chg(); |
| |
| if (is_active_service(p_reg->app_uuid128, p_svc_uuid, svc_inst)) { |
| GATTS_StopService(it->asgn_range.s_handle); |
| } |
| |
| VLOG(1) << "released handles s_hdl=" << loghex(it->asgn_range.s_handle) |
| << ", e_hdl=" << loghex(it->asgn_range.e_handle); |
| |
| if ((it->asgn_range.s_handle >= gatt_cb.hdl_cfg.app_start_hdl) && |
| gatt_cb.cb_info.p_nv_save_callback) |
| (*gatt_cb.cb_info.p_nv_save_callback)(false, &it->asgn_range); |
| |
| gatt_cb.hdl_list_info->erase(it); |
| return true; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATTS_StopService |
| * |
| * Description This function is called to stop a service |
| * |
| * Parameter service_handle : this is the start handle of a service |
| * |
| * Returns None. |
| * |
| ******************************************************************************/ |
| void GATTS_StopService(uint16_t service_handle) { |
| LOG(INFO) << __func__ << ": " << loghex(service_handle); |
| |
| auto it = gatt_sr_find_i_rcb_by_handle(service_handle); |
| if (it == gatt_cb.srv_list_info->end()) { |
| LOG(ERROR) << __func__ << ": service_handle=" << loghex(service_handle) |
| << " is not in use"; |
| return; |
| } |
| |
| if (it->sdp_handle) { |
| SDP_DeleteRecord(it->sdp_handle); |
| } |
| |
| gatt_cb.srv_list_info->erase(it); |
| gatt_update_last_srv_info(); |
| } |
| /******************************************************************************* |
| * |
| * Function GATTs_HandleValueIndication |
| * |
| * Description This function sends a handle value indication to a client. |
| * |
| * Parameter conn_id: connection identifier. |
| * attr_handle: Attribute handle of this handle value |
| * indication. |
| * val_len: Length of the indicated attribute value. |
| * p_val: Pointer to the indicated attribute value data. |
| * |
| * Returns GATT_SUCCESS if sucessfully sent or queued; otherwise error |
| * code. |
| * |
| ******************************************************************************/ |
| tGATT_STATUS GATTS_HandleValueIndication(uint16_t conn_id, uint16_t attr_handle, |
| uint16_t val_len, uint8_t* p_val) { |
| tGATT_IF gatt_if = GATT_GET_GATT_IF(conn_id); |
| uint8_t tcb_idx = GATT_GET_TCB_IDX(conn_id); |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| tGATT_TCB* p_tcb = gatt_get_tcb_by_idx(tcb_idx); |
| |
| VLOG(1) << __func__; |
| if ((p_reg == NULL) || (p_tcb == NULL)) { |
| LOG(ERROR) << __func__ << ": Unknown conn_id=" << loghex(conn_id); |
| return (tGATT_STATUS)GATT_INVALID_CONN_ID; |
| } |
| |
| if (!GATT_HANDLE_IS_VALID(attr_handle)) return GATT_ILLEGAL_PARAMETER; |
| |
| tGATT_VALUE indication; |
| indication.conn_id = conn_id; |
| indication.handle = attr_handle; |
| indication.len = val_len; |
| memcpy(indication.value, p_val, val_len); |
| indication.auth_req = GATT_AUTH_REQ_NONE; |
| |
| if (GATT_HANDLE_IS_VALID(p_tcb->indicate_handle)) { |
| VLOG(1) << "Add a pending indication"; |
| gatt_add_pending_ind(p_tcb, &indication); |
| return GATT_SUCCESS; |
| } |
| |
| tGATT_SR_MSG gatt_sr_msg; |
| gatt_sr_msg.attr_value = indication; |
| BT_HDR* p_msg = |
| attp_build_sr_msg(*p_tcb, GATT_HANDLE_VALUE_IND, &gatt_sr_msg); |
| if (!p_msg) return GATT_NO_RESOURCES; |
| |
| tGATT_STATUS cmd_status = attp_send_sr_msg(*p_tcb, p_msg); |
| if (cmd_status == GATT_SUCCESS || cmd_status == GATT_CONGESTED) { |
| p_tcb->indicate_handle = indication.handle; |
| gatt_start_conf_timer(p_tcb); |
| } |
| return cmd_status; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATTS_HandleValueNotification |
| * |
| * Description This function sends a handle value notification to a client. |
| * |
| * Parameter conn_id: connection identifier. |
| * attr_handle: Attribute handle of this handle value |
| * indication. |
| * val_len: Length of the indicated attribute value. |
| * p_val: Pointer to the indicated attribute value data. |
| * |
| * Returns GATT_SUCCESS if sucessfully sent; otherwise error code. |
| * |
| ******************************************************************************/ |
| tGATT_STATUS GATTS_HandleValueNotification(uint16_t conn_id, |
| uint16_t attr_handle, |
| uint16_t val_len, uint8_t* p_val) { |
| tGATT_VALUE notif; |
| tGATT_IF gatt_if = GATT_GET_GATT_IF(conn_id); |
| uint8_t tcb_idx = GATT_GET_TCB_IDX(conn_id); |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| tGATT_TCB* p_tcb = gatt_get_tcb_by_idx(tcb_idx); |
| |
| VLOG(1) << __func__; |
| |
| if ((p_reg == NULL) || (p_tcb == NULL)) { |
| LOG(ERROR) << __func__ << "Unknown conn_id: " << conn_id; |
| return (tGATT_STATUS)GATT_INVALID_CONN_ID; |
| } |
| |
| if (!GATT_HANDLE_IS_VALID(attr_handle)) { |
| return GATT_ILLEGAL_PARAMETER; |
| } |
| |
| notif.handle = attr_handle; |
| notif.len = val_len; |
| memcpy(notif.value, p_val, val_len); |
| notif.auth_req = GATT_AUTH_REQ_NONE; |
| |
| tGATT_STATUS cmd_sent; |
| tGATT_SR_MSG gatt_sr_msg; |
| gatt_sr_msg.attr_value = notif; |
| BT_HDR* p_buf = |
| attp_build_sr_msg(*p_tcb, GATT_HANDLE_VALUE_NOTIF, &gatt_sr_msg); |
| if (p_buf != NULL) { |
| cmd_sent = attp_send_sr_msg(*p_tcb, p_buf); |
| } else |
| cmd_sent = GATT_NO_RESOURCES; |
| return cmd_sent; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATTS_SendRsp |
| * |
| * Description This function sends the server response to client. |
| * |
| * Parameter conn_id: connection identifier. |
| * trans_id: transaction id |
| * status: response status |
| * p_msg: pointer to message parameters structure. |
| * |
| * Returns GATT_SUCCESS if sucessfully sent; otherwise error code. |
| * |
| ******************************************************************************/ |
| tGATT_STATUS GATTS_SendRsp(uint16_t conn_id, uint32_t trans_id, |
| tGATT_STATUS status, tGATTS_RSP* p_msg) { |
| tGATT_STATUS cmd_sent = GATT_ILLEGAL_PARAMETER; |
| tGATT_IF gatt_if = GATT_GET_GATT_IF(conn_id); |
| uint8_t tcb_idx = GATT_GET_TCB_IDX(conn_id); |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| tGATT_TCB* p_tcb = gatt_get_tcb_by_idx(tcb_idx); |
| |
| VLOG(1) << __func__ << ": conn_id=" << loghex(conn_id) |
| << ", trans_id=" << loghex(trans_id) << ", status=" << loghex(status); |
| |
| if ((p_reg == NULL) || (p_tcb == NULL)) { |
| LOG(ERROR) << "Unknown conn_id=" << loghex(conn_id); |
| return (tGATT_STATUS)GATT_INVALID_CONN_ID; |
| } |
| |
| if (p_tcb->sr_cmd.trans_id != trans_id) { |
| LOG(ERROR) << "conn_id=" << loghex(conn_id) |
| << " waiting for op_code=" << loghex(p_tcb->sr_cmd.op_code); |
| return (GATT_WRONG_STATE); |
| } |
| /* Process App response */ |
| cmd_sent = gatt_sr_process_app_rsp(*p_tcb, gatt_if, trans_id, |
| p_tcb->sr_cmd.op_code, status, p_msg); |
| |
| return cmd_sent; |
| } |
| |
| /******************************************************************************/ |
| /* GATT Profile Srvr Functions */ |
| /******************************************************************************/ |
| |
| /******************************************************************************/ |
| /* */ |
| /* GATT CLIENT APIs */ |
| /* */ |
| /******************************************************************************/ |
| |
| /******************************************************************************* |
| * |
| * Function GATTC_ConfigureMTU |
| * |
| * Description This function is called to configure the ATT MTU size. |
| * |
| * Parameters conn_id: connection identifier. |
| * mtu - attribute MTU size.. |
| * |
| * Returns GATT_SUCCESS if command started successfully. |
| * |
| ******************************************************************************/ |
| tGATT_STATUS GATTC_ConfigureMTU(uint16_t conn_id, uint16_t mtu) { |
| tGATT_IF gatt_if = GATT_GET_GATT_IF(conn_id); |
| uint8_t tcb_idx = GATT_GET_TCB_IDX(conn_id); |
| tGATT_TCB* p_tcb = gatt_get_tcb_by_idx(tcb_idx); |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| |
| VLOG(1) << __func__ << ": conn_id=" << loghex(conn_id) << ", mtu=" << +mtu; |
| |
| if ((p_tcb == NULL) || (p_reg == NULL) || (mtu < GATT_DEF_BLE_MTU_SIZE) || |
| (mtu > GATT_MAX_MTU_SIZE)) { |
| return GATT_ILLEGAL_PARAMETER; |
| } |
| |
| /* Validate that the link is BLE, not BR/EDR */ |
| if (p_tcb->transport != BT_TRANSPORT_LE) { |
| return GATT_ERROR; |
| } |
| |
| if (gatt_is_clcb_allocated(conn_id)) { |
| LOG(ERROR) << "GATT_BUSY conn_id = " << +conn_id; |
| return GATT_BUSY; |
| } |
| |
| tGATT_CLCB* p_clcb = gatt_clcb_alloc(conn_id); |
| if (!p_clcb) return GATT_NO_RESOURCES; |
| |
| p_clcb->p_tcb->payload_size = mtu; |
| p_clcb->operation = GATTC_OPTYPE_CONFIG; |
| tGATT_CL_MSG gatt_cl_msg; |
| gatt_cl_msg.mtu = mtu; |
| return attp_send_cl_msg(*p_clcb->p_tcb, p_clcb, GATT_REQ_MTU, &gatt_cl_msg); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATTC_Discover |
| * |
| * Description This function is called to do a discovery procedure on ATT |
| * server. |
| * |
| * Parameters conn_id: connection identifier. |
| * disc_type:discovery type. |
| * start_handle and end_handle: range of handles for discovery |
| * uuid: uuid to discovery. set to Uuid::kEmpty for requests |
| * that don't need it |
| * |
| * Returns GATT_SUCCESS if command received/sent successfully. |
| * |
| ******************************************************************************/ |
| tGATT_STATUS GATTC_Discover(uint16_t conn_id, tGATT_DISC_TYPE disc_type, |
| uint16_t start_handle, uint16_t end_handle, |
| const Uuid& uuid) { |
| tGATT_IF gatt_if = GATT_GET_GATT_IF(conn_id); |
| uint8_t tcb_idx = GATT_GET_TCB_IDX(conn_id); |
| tGATT_TCB* p_tcb = gatt_get_tcb_by_idx(tcb_idx); |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| |
| if ((p_tcb == NULL) || (p_reg == NULL) || (disc_type >= GATT_DISC_MAX)) { |
| LOG(ERROR) << __func__ << " Illegal param: disc_type=" << +disc_type |
| << " conn_id=" << loghex(conn_id); |
| return GATT_ILLEGAL_PARAMETER; |
| } |
| |
| LOG(INFO) << __func__ << " conn_id=" << loghex(conn_id) |
| << ", disc_type=" << +disc_type |
| << ", s_handle=" << loghex(start_handle) |
| << ", e_handle=" << loghex(end_handle); |
| |
| if (!GATT_HANDLE_IS_VALID(start_handle) || |
| !GATT_HANDLE_IS_VALID(end_handle) || |
| /* search by type does not have a valid UUID param */ |
| (disc_type == GATT_DISC_SRVC_BY_UUID && uuid.IsEmpty())) { |
| return GATT_ILLEGAL_PARAMETER; |
| } |
| |
| if (gatt_is_clcb_allocated(conn_id)) { |
| LOG(ERROR) << __func__ << "GATT_BUSY conn_id = " << +conn_id; |
| return GATT_BUSY; |
| } |
| |
| tGATT_CLCB* p_clcb = gatt_clcb_alloc(conn_id); |
| if (!p_clcb) return GATT_NO_RESOURCES; |
| |
| p_clcb->operation = GATTC_OPTYPE_DISCOVERY; |
| p_clcb->op_subtype = disc_type; |
| p_clcb->s_handle = start_handle; |
| p_clcb->e_handle = end_handle; |
| p_clcb->uuid = uuid; |
| |
| gatt_act_discovery(p_clcb); |
| return GATT_SUCCESS; |
| } |
| |
| tGATT_STATUS GATTC_Discover(uint16_t conn_id, tGATT_DISC_TYPE disc_type, |
| uint16_t start_handle, uint16_t end_handle) { |
| return GATTC_Discover(conn_id, disc_type, start_handle, end_handle, |
| Uuid::kEmpty); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATTC_Read |
| * |
| * Description This function is called to read the value of an attribute |
| * from the server. |
| * |
| * Parameters conn_id: connection identifier. |
| * type - attribute read type. |
| * p_read - read operation parameters. |
| * |
| * Returns GATT_SUCCESS if command started successfully. |
| * |
| ******************************************************************************/ |
| tGATT_STATUS GATTC_Read(uint16_t conn_id, tGATT_READ_TYPE type, |
| tGATT_READ_PARAM* p_read) { |
| tGATT_IF gatt_if = GATT_GET_GATT_IF(conn_id); |
| uint8_t tcb_idx = GATT_GET_TCB_IDX(conn_id); |
| tGATT_TCB* p_tcb = gatt_get_tcb_by_idx(tcb_idx); |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| |
| VLOG(1) << __func__ << ": conn_id=" << loghex(conn_id) |
| << ", type=" << loghex(type); |
| |
| if ((p_tcb == NULL) || (p_reg == NULL) || (p_read == NULL) || |
| ((type >= GATT_READ_MAX) || (type == 0))) { |
| LOG(ERROR) << ": illegal param: conn_id=" << loghex(conn_id) |
| << "type=" << loghex(type); |
| return GATT_ILLEGAL_PARAMETER; |
| } |
| |
| if (gatt_is_clcb_allocated(conn_id)) { |
| LOG(ERROR) << "GATT_BUSY conn_id=" << loghex(conn_id); |
| return GATT_BUSY; |
| } |
| |
| tGATT_CLCB* p_clcb = gatt_clcb_alloc(conn_id); |
| if (!p_clcb) return GATT_NO_RESOURCES; |
| |
| p_clcb->operation = GATTC_OPTYPE_READ; |
| p_clcb->op_subtype = type; |
| p_clcb->auth_req = p_read->by_handle.auth_req; |
| p_clcb->counter = 0; |
| p_clcb->read_req_current_mtu = p_tcb->payload_size; |
| |
| switch (type) { |
| case GATT_READ_BY_TYPE: |
| case GATT_READ_CHAR_VALUE: |
| p_clcb->s_handle = p_read->service.s_handle; |
| p_clcb->e_handle = p_read->service.e_handle; |
| p_clcb->uuid = p_read->service.uuid; |
| break; |
| case GATT_READ_MULTIPLE: { |
| p_clcb->s_handle = 0; |
| /* copy multiple handles in CB */ |
| tGATT_READ_MULTI* p_read_multi = |
| (tGATT_READ_MULTI*)osi_malloc(sizeof(tGATT_READ_MULTI)); |
| p_clcb->p_attr_buf = (uint8_t*)p_read_multi; |
| memcpy(p_read_multi, &p_read->read_multiple, sizeof(tGATT_READ_MULTI)); |
| break; |
| } |
| case GATT_READ_BY_HANDLE: |
| case GATT_READ_PARTIAL: |
| p_clcb->uuid = Uuid::kEmpty; |
| p_clcb->s_handle = p_read->by_handle.handle; |
| |
| if (type == GATT_READ_PARTIAL) { |
| p_clcb->counter = p_read->partial.offset; |
| } |
| |
| break; |
| default: |
| break; |
| } |
| |
| /* start security check */ |
| if (gatt_security_check_start(p_clcb)) p_tcb->pending_enc_clcb.push(p_clcb); |
| return GATT_SUCCESS; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATTC_Write |
| * |
| * Description This function is called to write the value of an attribute |
| * to the server. |
| * |
| * Parameters conn_id: connection identifier. |
| * type - attribute write type. |
| * p_write - write operation parameters. |
| * |
| * Returns GATT_SUCCESS if command started successfully. |
| * |
| ******************************************************************************/ |
| tGATT_STATUS GATTC_Write(uint16_t conn_id, tGATT_WRITE_TYPE type, |
| tGATT_VALUE* p_write) { |
| tGATT_IF gatt_if = GATT_GET_GATT_IF(conn_id); |
| uint8_t tcb_idx = GATT_GET_TCB_IDX(conn_id); |
| tGATT_TCB* p_tcb = gatt_get_tcb_by_idx(tcb_idx); |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| |
| if ((p_tcb == NULL) || (p_reg == NULL) || (p_write == NULL) || |
| ((type != GATT_WRITE) && (type != GATT_WRITE_PREPARE) && |
| (type != GATT_WRITE_NO_RSP))) { |
| LOG(ERROR) << __func__ << " Illegal param: conn_id=" << loghex(conn_id) |
| << ", type=" << loghex(type); |
| return GATT_ILLEGAL_PARAMETER; |
| } |
| |
| if (gatt_is_clcb_allocated(conn_id)) { |
| LOG(ERROR) << "GATT_BUSY conn_id=" << loghex(conn_id); |
| return GATT_BUSY; |
| } |
| |
| tGATT_CLCB* p_clcb = gatt_clcb_alloc(conn_id); |
| if (!p_clcb) return GATT_NO_RESOURCES; |
| |
| p_clcb->operation = GATTC_OPTYPE_WRITE; |
| p_clcb->op_subtype = type; |
| p_clcb->auth_req = p_write->auth_req; |
| |
| p_clcb->p_attr_buf = (uint8_t*)osi_malloc(sizeof(tGATT_VALUE)); |
| memcpy(p_clcb->p_attr_buf, (void*)p_write, sizeof(tGATT_VALUE)); |
| |
| tGATT_VALUE* p = (tGATT_VALUE*)p_clcb->p_attr_buf; |
| if (type == GATT_WRITE_PREPARE) { |
| p_clcb->start_offset = p_write->offset; |
| p->offset = 0; |
| } |
| |
| if (gatt_security_check_start(p_clcb)) p_tcb->pending_enc_clcb.push(p_clcb); |
| return GATT_SUCCESS; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATTC_ExecuteWrite |
| * |
| * Description This function is called to send an Execute write request to |
| * the server. |
| * |
| * Parameters conn_id: connection identifier. |
| * is_execute - to execute or cancel the prepared write |
| * request(s) |
| * |
| * Returns GATT_SUCCESS if command started successfully. |
| * |
| ******************************************************************************/ |
| tGATT_STATUS GATTC_ExecuteWrite(uint16_t conn_id, bool is_execute) { |
| tGATT_IF gatt_if = GATT_GET_GATT_IF(conn_id); |
| uint8_t tcb_idx = GATT_GET_TCB_IDX(conn_id); |
| tGATT_TCB* p_tcb = gatt_get_tcb_by_idx(tcb_idx); |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| |
| VLOG(1) << __func__ << ": conn_id=" << loghex(conn_id) |
| << ", is_execute=" << +is_execute; |
| |
| if ((p_tcb == NULL) || (p_reg == NULL)) { |
| LOG(ERROR) << " Illegal param: conn_id=" << loghex(conn_id); |
| return GATT_ILLEGAL_PARAMETER; |
| } |
| |
| if (gatt_is_clcb_allocated(conn_id)) { |
| LOG(ERROR) << " GATT_BUSY conn_id=" << loghex(conn_id); |
| return GATT_BUSY; |
| } |
| |
| tGATT_CLCB* p_clcb = gatt_clcb_alloc(conn_id); |
| if (!p_clcb) return GATT_NO_RESOURCES; |
| |
| p_clcb->operation = GATTC_OPTYPE_EXE_WRITE; |
| tGATT_EXEC_FLAG flag = |
| is_execute ? GATT_PREP_WRITE_EXEC : GATT_PREP_WRITE_CANCEL; |
| gatt_send_queue_write_cancel(*p_clcb->p_tcb, p_clcb, flag); |
| return GATT_SUCCESS; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATTC_SendHandleValueConfirm |
| * |
| * Description This function is called to send a handle value confirmation |
| * as response to a handle value notification from server. |
| * |
| * Parameters conn_id: connection identifier. |
| * handle: the handle of the attribute confirmation. |
| * |
| * Returns GATT_SUCCESS if command started successfully. |
| * |
| ******************************************************************************/ |
| tGATT_STATUS GATTC_SendHandleValueConfirm(uint16_t conn_id, uint16_t handle) { |
| VLOG(1) << __func__ << " conn_id=" << loghex(conn_id) |
| << ", handle=" << loghex(handle); |
| |
| tGATT_TCB* p_tcb = gatt_get_tcb_by_idx(GATT_GET_TCB_IDX(conn_id)); |
| if (!p_tcb) { |
| LOG(ERROR) << "Unknown conn_id=" << loghex(conn_id); |
| return GATT_ILLEGAL_PARAMETER; |
| } |
| |
| if (p_tcb->ind_count == 0) { |
| VLOG(1) << " conn_id: " << loghex(conn_id) |
| << " ignored not waiting for indicaiton ack"; |
| return GATT_SUCCESS; |
| } |
| |
| alarm_cancel(p_tcb->ind_ack_timer); |
| |
| VLOG(1) << "notif_count= " << p_tcb->ind_count; |
| /* send confirmation now */ |
| tGATT_CL_MSG gatt_cl_msg; |
| gatt_cl_msg.handle = handle; |
| tGATT_STATUS ret = |
| attp_send_cl_msg(*p_tcb, nullptr, GATT_HANDLE_VALUE_CONF, &gatt_cl_msg); |
| |
| p_tcb->ind_count = 0; |
| |
| return ret; |
| } |
| |
| /******************************************************************************/ |
| /* */ |
| /* GATT APIs */ |
| /* */ |
| /******************************************************************************/ |
| /******************************************************************************* |
| * |
| * Function GATT_SetIdleTimeout |
| * |
| * Description This function (common to both client and server) sets the |
| * idle timeout for a tansport connection |
| * |
| * Parameter bd_addr: target device bd address. |
| * idle_tout: timeout value in seconds. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void GATT_SetIdleTimeout(const RawAddress& bd_addr, uint16_t idle_tout, |
| tBT_TRANSPORT transport) { |
| bool status = false; |
| |
| tGATT_TCB* p_tcb = gatt_find_tcb_by_addr(bd_addr, transport); |
| if (p_tcb != NULL) { |
| if (p_tcb->att_lcid == L2CAP_ATT_CID) { |
| status = L2CA_SetFixedChannelTout(bd_addr, L2CAP_ATT_CID, idle_tout); |
| |
| if (idle_tout == GATT_LINK_IDLE_TIMEOUT_WHEN_NO_APP) |
| L2CA_SetIdleTimeoutByBdAddr(p_tcb->peer_bda, |
| GATT_LINK_IDLE_TIMEOUT_WHEN_NO_APP, |
| BT_TRANSPORT_LE); |
| } else { |
| status = L2CA_SetIdleTimeout(p_tcb->att_lcid, idle_tout, false); |
| } |
| } |
| |
| VLOG(1) << __func__ << " idle_tout=" << idle_tout << ", status=" << +status |
| << " (1-OK 0-not performed)"; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATT_Register |
| * |
| * Description This function is called to register an application |
| * with GATT |
| * |
| * Parameter p_app_uuid128: Application UUID |
| * p_cb_info: callback functions. |
| * |
| * Returns 0 for error, otherwise the index of the client registered |
| * with GATT |
| * |
| ******************************************************************************/ |
| tGATT_IF GATT_Register(const Uuid& app_uuid128, tGATT_CBACK* p_cb_info) { |
| tGATT_REG* p_reg; |
| uint8_t i_gatt_if = 0; |
| tGATT_IF gatt_if = 0; |
| |
| LOG(INFO) << __func__ << " " << app_uuid128; |
| |
| for (i_gatt_if = 0, p_reg = gatt_cb.cl_rcb; i_gatt_if < GATT_MAX_APPS; |
| i_gatt_if++, p_reg++) { |
| if (p_reg->in_use && p_reg->app_uuid128 == app_uuid128) { |
| LOG(ERROR) << "application already registered."; |
| return 0; |
| } |
| } |
| |
| for (i_gatt_if = 0, p_reg = gatt_cb.cl_rcb; i_gatt_if < GATT_MAX_APPS; |
| i_gatt_if++, p_reg++) { |
| if (!p_reg->in_use) { |
| memset(p_reg, 0, sizeof(tGATT_REG)); |
| i_gatt_if++; /* one based number */ |
| p_reg->app_uuid128 = app_uuid128; |
| gatt_if = p_reg->gatt_if = (tGATT_IF)i_gatt_if; |
| p_reg->app_cb = *p_cb_info; |
| p_reg->in_use = true; |
| |
| LOG(INFO) << "allocated gatt_if=" << +gatt_if; |
| return gatt_if; |
| } |
| } |
| |
| LOG(ERROR) << "can't Register GATT client, MAX client reached: " |
| << GATT_MAX_APPS; |
| return 0; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATT_Deregister |
| * |
| * Description This function deregistered the application from GATT. |
| * |
| * Parameters gatt_if: applicaiton interface. |
| * |
| * Returns None. |
| * |
| ******************************************************************************/ |
| void GATT_Deregister(tGATT_IF gatt_if) { |
| VLOG(1) << __func__ << " gatt_if=" << +gatt_if; |
| |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| /* Index 0 is GAP and is never deregistered */ |
| if ((gatt_if == 0) || (p_reg == NULL)) { |
| LOG(ERROR) << "invalid gatt_if=" << +gatt_if; |
| return; |
| } |
| |
| /* stop all services */ |
| /* todo an applcaiton can not be deregistered if its services is also used by |
| other application |
| deregisteration need to bed performed in an orderly fashion |
| no check for now */ |
| for (auto it = gatt_cb.srv_list_info->begin(); |
| it != gatt_cb.srv_list_info->end();) { |
| if (it->gatt_if == gatt_if) { |
| GATTS_StopService(it++->s_hdl); |
| } else { |
| ++it; |
| } |
| } |
| |
| /* free all services db buffers if owned by this application */ |
| gatt_free_srvc_db_buffer_app_id(p_reg->app_uuid128); |
| |
| /* When an application deregisters, check remove the link associated with the |
| * app */ |
| tGATT_TCB* p_tcb; |
| int i, j; |
| for (i = 0, p_tcb = gatt_cb.tcb; i < GATT_MAX_PHY_CHANNEL; i++, p_tcb++) { |
| if (!p_tcb->in_use) continue; |
| |
| if (gatt_get_ch_state(p_tcb) != GATT_CH_CLOSE) { |
| gatt_update_app_use_link_flag(gatt_if, p_tcb, false, true); |
| } |
| |
| tGATT_CLCB* p_clcb; |
| for (j = 0, p_clcb = &gatt_cb.clcb[j]; j < GATT_CL_MAX_LCB; j++, p_clcb++) { |
| if (p_clcb->in_use && (p_clcb->p_reg->gatt_if == gatt_if) && |
| (p_clcb->p_tcb->tcb_idx == p_tcb->tcb_idx)) { |
| alarm_cancel(p_clcb->gatt_rsp_timer_ent); |
| gatt_clcb_dealloc(p_clcb); |
| break; |
| } |
| } |
| } |
| |
| connection_manager::on_app_deregistered(gatt_if); |
| |
| memset(p_reg, 0, sizeof(tGATT_REG)); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATT_StartIf |
| * |
| * Description This function is called after registration to start |
| * receiving callbacks for registered interface. Function may |
| * call back with connection status and queued notifications |
| * |
| * Parameter gatt_if: applicaiton interface. |
| * |
| * Returns None. |
| * |
| ******************************************************************************/ |
| void GATT_StartIf(tGATT_IF gatt_if) { |
| tGATT_REG* p_reg; |
| tGATT_TCB* p_tcb; |
| RawAddress bda; |
| uint8_t start_idx, found_idx; |
| uint16_t conn_id; |
| tGATT_TRANSPORT transport; |
| |
| VLOG(1) << __func__ << " gatt_if=" << +gatt_if; |
| p_reg = gatt_get_regcb(gatt_if); |
| if (p_reg != NULL) { |
| start_idx = 0; |
| while ( |
| gatt_find_the_connected_bda(start_idx, bda, &found_idx, &transport)) { |
| p_tcb = gatt_find_tcb_by_addr(bda, transport); |
| if (p_reg->app_cb.p_conn_cb && p_tcb) { |
| conn_id = GATT_CREATE_CONN_ID(p_tcb->tcb_idx, gatt_if); |
| (*p_reg->app_cb.p_conn_cb)(gatt_if, bda, conn_id, true, 0, transport); |
| } |
| start_idx = ++found_idx; |
| } |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATT_Connect |
| * |
| * Description This function initiate a connecttion to a remote device on |
| * GATT channel. |
| * |
| * Parameters gatt_if: applicaiton interface |
| * bd_addr: peer device address. |
| * is_direct: is a direct conenection or a background auto |
| * connection |
| * |
| * Returns true if connection started; false if connection start |
| * failure. |
| * |
| ******************************************************************************/ |
| bool GATT_Connect(tGATT_IF gatt_if, const RawAddress& bd_addr, bool is_direct, |
| tBT_TRANSPORT transport, bool opportunistic) { |
| uint8_t phy = controller_get_interface()->get_le_all_initiating_phys(); |
| return GATT_Connect(gatt_if, bd_addr, is_direct, transport, opportunistic, |
| phy); |
| } |
| |
| bool GATT_Connect(tGATT_IF gatt_if, const RawAddress& bd_addr, bool is_direct, |
| tBT_TRANSPORT transport, bool opportunistic, |
| uint8_t initiating_phys) { |
| LOG(INFO) << __func__ << "gatt_if=" << +gatt_if << ", address=" << bd_addr; |
| |
| /* Make sure app is registered */ |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| if (!p_reg) { |
| LOG(ERROR) << "gatt_if = " << +gatt_if << " is not registered"; |
| return false; |
| } |
| |
| if (!is_direct && transport != BT_TRANSPORT_LE) { |
| LOG(ERROR) << "Unsupported transport for background connection"; |
| return false; |
| } |
| |
| if (opportunistic) { |
| LOG(INFO) << __func__ << " opportunistic connection"; |
| return true; |
| } |
| |
| bool ret; |
| if (is_direct) { |
| ret = gatt_act_connect(p_reg, bd_addr, transport, initiating_phys); |
| } else { |
| if (!BTM_BackgroundConnectAddressKnown(bd_addr)) { |
| // RPA can rotate, causing address to "expire" in the background |
| // connection list. RPA is allowed for direct connect, as such request |
| // times out after 30 seconds |
| LOG(INFO) << "Can't add RPA to background connection."; |
| ret = true; |
| } else { |
| ret = connection_manager::background_connect_add(gatt_if, bd_addr); |
| } |
| } |
| |
| tGATT_TCB* p_tcb = gatt_find_tcb_by_addr(bd_addr, transport); |
| // background connections don't necessarily create tcb |
| if (p_tcb && ret) |
| gatt_update_app_use_link_flag(p_reg->gatt_if, p_tcb, true, !is_direct); |
| |
| return ret; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATT_CancelConnect |
| * |
| * Description This function terminate the connection initaition to a |
| * remote device on GATT channel. |
| * |
| * Parameters gatt_if: client interface. If 0 used as unconditionally |
| * disconnect, typically used for direct connection |
| * cancellation. |
| * bd_addr: peer device address. |
| * |
| * Returns true if the connection started; false otherwise. |
| * |
| ******************************************************************************/ |
| bool GATT_CancelConnect(tGATT_IF gatt_if, const RawAddress& bd_addr, |
| bool is_direct) { |
| LOG(INFO) << __func__ << ": gatt_if:" << +gatt_if << ", address: " << bd_addr |
| << ", direct:" << is_direct; |
| |
| tGATT_REG* p_reg; |
| if (gatt_if) { |
| p_reg = gatt_get_regcb(gatt_if); |
| if (!p_reg) { |
| LOG(ERROR) << "gatt_if=" << +gatt_if << " is not registered"; |
| return false; |
| } |
| |
| if (is_direct) |
| return gatt_cancel_open(gatt_if, bd_addr); |
| else |
| return gatt_auto_connect_dev_remove(p_reg->gatt_if, bd_addr); |
| } |
| |
| VLOG(1) << " unconditional"; |
| |
| /* only LE connection can be cancelled */ |
| tGATT_TCB* p_tcb = gatt_find_tcb_by_addr(bd_addr, BT_TRANSPORT_LE); |
| if (p_tcb && !p_tcb->app_hold_link.empty()) { |
| for (auto it = p_tcb->app_hold_link.begin(); |
| it != p_tcb->app_hold_link.end();) { |
| auto next = std::next(it); |
| // gatt_cancel_open modifies the app_hold_link. |
| gatt_cancel_open(*it, bd_addr); |
| |
| it = next; |
| } |
| } |
| |
| if (!connection_manager::remove_unconditional(bd_addr)) { |
| LOG(ERROR) |
| << __func__ |
| << ": no app associated with the bg device for unconditional removal"; |
| return false; |
| } |
| |
| return true; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATT_Disconnect |
| * |
| * Description This function disconnects the GATT channel for this |
| * registered application. |
| * |
| * Parameters conn_id: connection identifier. |
| * |
| * Returns GATT_SUCCESS if disconnected. |
| * |
| ******************************************************************************/ |
| tGATT_STATUS GATT_Disconnect(uint16_t conn_id) { |
| LOG(INFO) << __func__ << " conn_id=" << loghex(conn_id); |
| |
| uint8_t tcb_idx = GATT_GET_TCB_IDX(conn_id); |
| tGATT_TCB* p_tcb = gatt_get_tcb_by_idx(tcb_idx); |
| if (!p_tcb) return GATT_ILLEGAL_PARAMETER; |
| |
| tGATT_IF gatt_if = GATT_GET_GATT_IF(conn_id); |
| gatt_update_app_use_link_flag(gatt_if, p_tcb, false, true); |
| return GATT_SUCCESS; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATT_GetConnectionInfor |
| * |
| * Description This function uses conn_id to find its associated BD address |
| * and application interface |
| * |
| * Parameters conn_id: connection id (input) |
| * p_gatt_if: applicaiton interface (output) |
| * bd_addr: peer device address. (output) |
| * |
| * Returns true the ligical link information is found for conn_id |
| * |
| ******************************************************************************/ |
| bool GATT_GetConnectionInfor(uint16_t conn_id, tGATT_IF* p_gatt_if, |
| RawAddress& bd_addr, tBT_TRANSPORT* p_transport) { |
| tGATT_IF gatt_if = GATT_GET_GATT_IF(conn_id); |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| uint8_t tcb_idx = GATT_GET_TCB_IDX(conn_id); |
| tGATT_TCB* p_tcb = gatt_get_tcb_by_idx(tcb_idx); |
| |
| VLOG(1) << __func__ << " conn_id=" << loghex(conn_id); |
| |
| if (!p_tcb || !p_reg) return false; |
| |
| bd_addr = p_tcb->peer_bda; |
| *p_gatt_if = gatt_if; |
| *p_transport = p_tcb->transport; |
| return true; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATT_GetConnIdIfConnected |
| * |
| * Description This function find the conn_id if the logical link for BD |
| * address and applciation interface is connected |
| * |
| * Parameters gatt_if: applicaiton interface (input) |
| * bd_addr: peer device address. (input) |
| * p_conn_id: connection id (output) |
| * transport: transport option |
| * |
| * Returns true the logical link is connected |
| * |
| ******************************************************************************/ |
| bool GATT_GetConnIdIfConnected(tGATT_IF gatt_if, const RawAddress& bd_addr, |
| uint16_t* p_conn_id, tBT_TRANSPORT transport) { |
| tGATT_REG* p_reg = gatt_get_regcb(gatt_if); |
| tGATT_TCB* p_tcb = gatt_find_tcb_by_addr(bd_addr, transport); |
| bool status = false; |
| |
| if (p_reg && p_tcb && (gatt_get_ch_state(p_tcb) == GATT_CH_OPEN)) { |
| *p_conn_id = GATT_CREATE_CONN_ID(p_tcb->tcb_idx, gatt_if); |
| status = true; |
| } |
| |
| VLOG(1) << __func__ << " status= " << +status; |
| return status; |
| } |
