| /****************************************************************************** |
| * |
| * Copyright (C) 1999-2013 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. |
| * |
| ******************************************************************************/ |
| |
| #include "bt_target.h" |
| #include "bt_utils.h" |
| #include "gatt_api.h" |
| #include "gatt_int.h" |
| #include "osi/include/osi.h" |
| #include "srvc_eng_int.h" |
| |
| #include "srvc_battery_int.h" |
| #include "srvc_dis_int.h" |
| |
| using base::StringPrintf; |
| static void srvc_eng_s_request_cback(uint16_t conn_id, uint32_t trans_id, |
| uint8_t op_code, tGATTS_DATA* p_data); |
| static void srvc_eng_connect_cback(UNUSED_ATTR tGATT_IF gatt_if, |
| const RawAddress& bda, uint16_t conn_id, |
| bool connected, tGATT_DISCONN_REASON reason, |
| tBT_TRANSPORT transport); |
| static void srvc_eng_c_cmpl_cback(uint16_t conn_id, tGATTC_OPTYPE op, |
| tGATT_STATUS status, |
| tGATT_CL_COMPLETE* p_data); |
| |
| static tGATT_CBACK srvc_gatt_cback = {srvc_eng_connect_cback, |
| srvc_eng_c_cmpl_cback, |
| NULL, |
| NULL, |
| srvc_eng_s_request_cback, |
| NULL, |
| NULL, |
| NULL, |
| NULL}; |
| /* type for action functions */ |
| typedef void (*tSRVC_ENG_C_CMPL_ACTION)(tSRVC_CLCB* p_clcb, tGATTC_OPTYPE op, |
| tGATT_STATUS status, |
| tGATT_CL_COMPLETE* p_data); |
| |
| const tSRVC_ENG_C_CMPL_ACTION srvc_eng_c_cmpl_act[SRVC_ID_MAX] = { |
| dis_c_cmpl_cback, |
| }; |
| |
| tSRVC_ENG_CB srvc_eng_cb; |
| |
| /******************************************************************************* |
| * |
| * Function srvc_eng_find_conn_id_by_bd_addr |
| * |
| * Description The function searches all LCB with macthing bd address |
| * |
| * Returns total number of clcb found. |
| * |
| ******************************************************************************/ |
| uint16_t srvc_eng_find_conn_id_by_bd_addr(const RawAddress& bda) { |
| uint8_t i_clcb; |
| tSRVC_CLCB* p_clcb = NULL; |
| |
| for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS; |
| i_clcb++, p_clcb++) { |
| if (p_clcb->in_use && p_clcb->connected && p_clcb->bda == bda) { |
| return p_clcb->conn_id; |
| } |
| } |
| |
| return GATT_INVALID_CONN_ID; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function srvc_eng_find_clcb_by_bd_addr |
| * |
| * Description The function searches all LCBs with macthing bd address. |
| * |
| * Returns Pointer to the found link conenction control block. |
| * |
| ******************************************************************************/ |
| tSRVC_CLCB* srvc_eng_find_clcb_by_bd_addr(const RawAddress& bda) { |
| uint8_t i_clcb; |
| tSRVC_CLCB* p_clcb = NULL; |
| |
| for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS; |
| i_clcb++, p_clcb++) { |
| if (p_clcb->in_use && p_clcb->connected && p_clcb->bda == bda) { |
| return p_clcb; |
| } |
| } |
| |
| return NULL; |
| } |
| /******************************************************************************* |
| * |
| * Function srvc_eng_find_clcb_by_conn_id |
| * |
| * Description The function searches all LCBs with macthing connection ID. |
| * |
| * Returns Pointer to the found link conenction control block. |
| * |
| ******************************************************************************/ |
| tSRVC_CLCB* srvc_eng_find_clcb_by_conn_id(uint16_t conn_id) { |
| uint8_t i_clcb; |
| tSRVC_CLCB* p_clcb = NULL; |
| |
| for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS; |
| i_clcb++, p_clcb++) { |
| if (p_clcb->in_use && p_clcb->connected && p_clcb->conn_id == conn_id) { |
| return p_clcb; |
| } |
| } |
| |
| return NULL; |
| } |
| /******************************************************************************* |
| * |
| * Function srvc_eng_find_clcb_by_conn_id |
| * |
| * Description The function searches all LCBs with macthing connection ID. |
| * |
| * Returns Pointer to the found link conenction control block. |
| * |
| ******************************************************************************/ |
| uint8_t srvc_eng_find_clcb_idx_by_conn_id(uint16_t conn_id) { |
| uint8_t i_clcb; |
| tSRVC_CLCB* p_clcb = NULL; |
| |
| for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS; |
| i_clcb++, p_clcb++) { |
| if (p_clcb->in_use && p_clcb->connected && p_clcb->conn_id == conn_id) { |
| return i_clcb; |
| } |
| } |
| |
| return SRVC_MAX_APPS; |
| } |
| /******************************************************************************* |
| * |
| * Function srvc_eng_clcb_alloc |
| * |
| * Description Allocate a GATT profile connection link control block |
| * |
| * Returns NULL if not found. Otherwise pointer to the connection link |
| * block. |
| * |
| ******************************************************************************/ |
| tSRVC_CLCB* srvc_eng_clcb_alloc(uint16_t conn_id, const RawAddress& bda) { |
| uint8_t i_clcb = 0; |
| tSRVC_CLCB* p_clcb = NULL; |
| |
| for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS; |
| i_clcb++, p_clcb++) { |
| if (!p_clcb->in_use) { |
| p_clcb->in_use = true; |
| p_clcb->conn_id = conn_id; |
| p_clcb->connected = true; |
| p_clcb->bda = bda; |
| break; |
| } |
| } |
| return p_clcb; |
| } |
| /******************************************************************************* |
| * |
| * Function srvc_eng_clcb_dealloc |
| * |
| * Description De-allocate a GATT profile connection link control block |
| * |
| * Returns True the deallocation is successful |
| * |
| ******************************************************************************/ |
| bool srvc_eng_clcb_dealloc(uint16_t conn_id) { |
| uint8_t i_clcb = 0; |
| tSRVC_CLCB* p_clcb = NULL; |
| |
| for (i_clcb = 0, p_clcb = srvc_eng_cb.clcb; i_clcb < SRVC_MAX_APPS; |
| i_clcb++, p_clcb++) { |
| if (p_clcb->in_use && p_clcb->connected && (p_clcb->conn_id == conn_id)) { |
| unsigned j; |
| for (j = 0; j < ARRAY_SIZE(p_clcb->dis_value.data_string); j++) |
| osi_free(p_clcb->dis_value.data_string[j]); |
| |
| memset(p_clcb, 0, sizeof(tSRVC_CLCB)); |
| return true; |
| } |
| } |
| return false; |
| } |
| /******************************************************************************* |
| * Service Engine Server Attributes Database Read/Read Blob Request process |
| ******************************************************************************/ |
| uint8_t srvc_eng_process_read_req(uint8_t clcb_idx, tGATT_READ_REQ* p_data, |
| tGATTS_RSP* p_rsp, tGATT_STATUS* p_status) { |
| tGATT_STATUS status = GATT_NOT_FOUND; |
| uint8_t act = SRVC_ACT_RSP; |
| |
| if (p_data->is_long) p_rsp->attr_value.offset = p_data->offset; |
| |
| p_rsp->attr_value.handle = p_data->handle; |
| |
| if (dis_valid_handle_range(p_data->handle)) |
| act = dis_read_attr_value(clcb_idx, p_data->handle, &p_rsp->attr_value, |
| p_data->is_long, p_status); |
| |
| else if (battery_valid_handle_range(p_data->handle)) |
| act = |
| battery_s_read_attr_value(clcb_idx, p_data->handle, &p_rsp->attr_value, |
| p_data->is_long, p_status); |
| |
| else |
| *p_status = status; |
| return act; |
| } |
| /******************************************************************************* |
| * Service Engine Server Attributes Database write Request process |
| ******************************************************************************/ |
| uint8_t srvc_eng_process_write_req(uint8_t clcb_idx, tGATT_WRITE_REQ* p_data, |
| UNUSED_ATTR tGATTS_RSP* p_rsp, |
| tGATT_STATUS* p_status) { |
| uint8_t act = SRVC_ACT_RSP; |
| |
| if (dis_valid_handle_range(p_data->handle)) { |
| act = dis_write_attr_value(p_data, p_status); |
| } else if (battery_valid_handle_range(p_data->handle)) { |
| act = battery_s_write_attr_value(clcb_idx, p_data, p_status); |
| } else |
| *p_status = GATT_NOT_FOUND; |
| |
| return act; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function srvc_eng_s_request_cback |
| * |
| * Description GATT DIS attribute access request callback. |
| * |
| * Returns void. |
| * |
| ******************************************************************************/ |
| static void srvc_eng_s_request_cback(uint16_t conn_id, uint32_t trans_id, |
| tGATTS_REQ_TYPE type, |
| tGATTS_DATA* p_data) { |
| uint8_t status = GATT_INVALID_PDU; |
| tGATTS_RSP rsp_msg; |
| uint8_t act = SRVC_ACT_IGNORE; |
| uint8_t clcb_idx = srvc_eng_find_clcb_idx_by_conn_id(conn_id); |
| |
| VLOG(1) << StringPrintf("srvc_eng_s_request_cback : recv type (0x%02x)", |
| type); |
| |
| memset(&rsp_msg, 0, sizeof(tGATTS_RSP)); |
| |
| srvc_eng_cb.clcb[clcb_idx].trans_id = trans_id; |
| |
| switch (type) { |
| case GATTS_REQ_TYPE_READ_CHARACTERISTIC: |
| case GATTS_REQ_TYPE_READ_DESCRIPTOR: |
| act = srvc_eng_process_read_req(clcb_idx, &p_data->read_req, &rsp_msg, |
| &status); |
| break; |
| |
| case GATTS_REQ_TYPE_WRITE_CHARACTERISTIC: |
| case GATTS_REQ_TYPE_WRITE_DESCRIPTOR: |
| act = srvc_eng_process_write_req(clcb_idx, &p_data->write_req, &rsp_msg, |
| &status); |
| if (!p_data->write_req.need_rsp) act = SRVC_ACT_IGNORE; |
| break; |
| |
| case GATTS_REQ_TYPE_WRITE_EXEC: |
| VLOG(1) << "Ignore GATT_REQ_EXEC_WRITE/WRITE_CMD"; |
| break; |
| |
| case GATTS_REQ_TYPE_MTU: |
| VLOG(1) << "Get MTU exchange new mtu size: " << p_data->mtu; |
| break; |
| |
| default: |
| VLOG(1) << StringPrintf("Unknown/unexpected LE GAP ATT request: 0x%02x", |
| type); |
| break; |
| } |
| |
| srvc_eng_cb.clcb[clcb_idx].trans_id = 0; |
| |
| if (act == SRVC_ACT_RSP) GATTS_SendRsp(conn_id, trans_id, status, &rsp_msg); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function srvc_eng_c_cmpl_cback |
| * |
| * Description Client operation complete callback. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void srvc_eng_c_cmpl_cback(uint16_t conn_id, tGATTC_OPTYPE op, |
| tGATT_STATUS status, |
| tGATT_CL_COMPLETE* p_data) { |
| tSRVC_CLCB* p_clcb = srvc_eng_find_clcb_by_conn_id(conn_id); |
| |
| VLOG(1) << StringPrintf( |
| "srvc_eng_c_cmpl_cback() - op_code: 0x%02x status: 0x%02x ", op, status); |
| |
| if (p_clcb == NULL) { |
| LOG(ERROR) << __func__ << " received for unknown connection"; |
| return; |
| } |
| |
| if (p_clcb->cur_srvc_id != SRVC_ID_NONE && p_clcb->cur_srvc_id <= SRVC_ID_MAX) |
| srvc_eng_c_cmpl_act[p_clcb->cur_srvc_id - 1](p_clcb, op, status, p_data); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function srvc_eng_connect_cback |
| * |
| * Description Gatt profile connection callback. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void srvc_eng_connect_cback(UNUSED_ATTR tGATT_IF gatt_if, |
| const RawAddress& bda, uint16_t conn_id, |
| bool connected, tGATT_DISCONN_REASON reason, |
| UNUSED_ATTR tBT_TRANSPORT transport) { |
| VLOG(1) << __func__ << ": from " << bda |
| << StringPrintf(" connected:%d conn_id=%d reason = 0x%04x", connected, |
| conn_id, reason); |
| |
| if (connected) { |
| if (srvc_eng_clcb_alloc(conn_id, bda) == NULL) { |
| LOG(ERROR) << __func__ << "srvc_eng_connect_cback: no_resource"; |
| return; |
| } |
| } else { |
| srvc_eng_clcb_dealloc(conn_id); |
| } |
| } |
| /******************************************************************************* |
| * |
| * Function srvc_eng_c_cmpl_cback |
| * |
| * Description Client operation complete callback. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| bool srvc_eng_request_channel(const RawAddress& remote_bda, uint8_t srvc_id) { |
| bool set = true; |
| tSRVC_CLCB* p_clcb = srvc_eng_find_clcb_by_bd_addr(remote_bda); |
| |
| if (p_clcb == NULL) p_clcb = srvc_eng_clcb_alloc(0, remote_bda); |
| |
| if (p_clcb && p_clcb->cur_srvc_id == SRVC_ID_NONE) |
| p_clcb->cur_srvc_id = srvc_id; |
| else |
| set = false; |
| |
| return set; |
| } |
| /******************************************************************************* |
| * |
| * Function srvc_eng_release_channel |
| * |
| * Description Client operation complete callback. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void srvc_eng_release_channel(uint16_t conn_id) { |
| tSRVC_CLCB* p_clcb = srvc_eng_find_clcb_by_conn_id(conn_id); |
| |
| if (p_clcb == NULL) { |
| LOG(ERROR) << __func__ << ": invalid connection id " << conn_id; |
| return; |
| } |
| |
| p_clcb->cur_srvc_id = SRVC_ID_NONE; |
| |
| /* check pending request */ |
| GATT_Disconnect(p_clcb->conn_id); |
| } |
| /******************************************************************************* |
| * |
| * Function srvc_eng_init |
| * |
| * Description Initializa the GATT Service engine. |
| * |
| ******************************************************************************/ |
| tGATT_STATUS srvc_eng_init(void) { |
| tBT_UUID app_uuid = {LEN_UUID_16, {UUID_SERVCLASS_DEVICE_INFO}}; |
| |
| if (srvc_eng_cb.enabled) { |
| LOG(ERROR) << "DIS already initalized"; |
| } else { |
| memset(&srvc_eng_cb, 0, sizeof(tSRVC_ENG_CB)); |
| |
| /* Create a GATT profile service */ |
| srvc_eng_cb.gatt_if = GATT_Register(&app_uuid, &srvc_gatt_cback); |
| GATT_StartIf(srvc_eng_cb.gatt_if); |
| |
| VLOG(1) << "Srvc_Init: gatt_if=" << +srvc_eng_cb.gatt_if; |
| |
| srvc_eng_cb.enabled = true; |
| dis_cb.dis_read_uuid_idx = 0xff; |
| } |
| return GATT_SUCCESS; |
| } |
| |
| void srvc_sr_rsp(uint8_t clcb_idx, tGATT_STATUS st, tGATTS_RSP* p_rsp) { |
| if (srvc_eng_cb.clcb[clcb_idx].trans_id != 0) { |
| GATTS_SendRsp(srvc_eng_cb.clcb[clcb_idx].conn_id, |
| srvc_eng_cb.clcb[clcb_idx].trans_id, st, p_rsp); |
| |
| srvc_eng_cb.clcb[clcb_idx].trans_id = 0; |
| } |
| } |
| void srvc_sr_notify(const RawAddress& remote_bda, uint16_t handle, uint16_t len, |
| uint8_t* p_value) { |
| uint16_t conn_id = srvc_eng_find_conn_id_by_bd_addr(remote_bda); |
| |
| if (conn_id != GATT_INVALID_CONN_ID) { |
| GATTS_HandleValueNotification(conn_id, handle, len, p_value); |
| } |
| } |
