| /****************************************************************************** |
| * |
| * Copyright (C) 2008-2012 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 the main GATT server attributes access request |
| * handling functions. |
| * |
| ******************************************************************************/ |
| |
| #include "bt_target.h" |
| #include "bt_utils.h" |
| |
| #include "btcore/include/uuid.h" |
| #include "gatt_api.h" |
| #include "gatt_int.h" |
| #include "osi/include/osi.h" |
| |
| #define GATTP_MAX_NUM_INC_SVR 0 |
| #define GATTP_MAX_CHAR_NUM 2 |
| #define GATTP_MAX_ATTR_NUM (GATTP_MAX_CHAR_NUM * 2 + GATTP_MAX_NUM_INC_SVR + 1) |
| #define GATTP_MAX_CHAR_VALUE_SIZE 50 |
| |
| #ifndef GATTP_ATTR_DB_SIZE |
| #define GATTP_ATTR_DB_SIZE \ |
| GATT_DB_MEM_SIZE(GATTP_MAX_NUM_INC_SVR, GATTP_MAX_CHAR_NUM, \ |
| GATTP_MAX_CHAR_VALUE_SIZE) |
| #endif |
| |
| static void gatt_request_cback(uint16_t conn_id, uint32_t trans_id, |
| uint8_t op_code, tGATTS_DATA* p_data); |
| static void gatt_connect_cback(UNUSED_ATTR tGATT_IF gatt_if, BD_ADDR bda, |
| uint16_t conn_id, bool connected, |
| tGATT_DISCONN_REASON reason, |
| tBT_TRANSPORT transport); |
| static void gatt_disc_res_cback(uint16_t conn_id, tGATT_DISC_TYPE disc_type, |
| tGATT_DISC_RES* p_data); |
| static void gatt_disc_cmpl_cback(uint16_t conn_id, tGATT_DISC_TYPE disc_type, |
| tGATT_STATUS status); |
| static void gatt_cl_op_cmpl_cback(UNUSED_ATTR uint16_t conn_id, |
| UNUSED_ATTR tGATTC_OPTYPE op, |
| UNUSED_ATTR tGATT_STATUS status, |
| UNUSED_ATTR tGATT_CL_COMPLETE* p_data); |
| |
| static void gatt_cl_start_config_ccc(tGATT_PROFILE_CLCB* p_clcb); |
| |
| static tGATT_CBACK gatt_profile_cback = {gatt_connect_cback, |
| gatt_cl_op_cmpl_cback, |
| gatt_disc_res_cback, |
| gatt_disc_cmpl_cback, |
| gatt_request_cback, |
| NULL, |
| NULL, |
| NULL, |
| NULL}; |
| |
| /******************************************************************************* |
| * |
| * Function gatt_profile_find_conn_id_by_bd_addr |
| * |
| * Description Find the connection ID by remote address |
| * |
| * Returns Connection ID |
| * |
| ******************************************************************************/ |
| uint16_t gatt_profile_find_conn_id_by_bd_addr(BD_ADDR remote_bda) { |
| uint16_t conn_id = GATT_INVALID_CONN_ID; |
| GATT_GetConnIdIfConnected(gatt_cb.gatt_if, remote_bda, &conn_id, |
| BT_TRANSPORT_LE); |
| return conn_id; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function gatt_profile_find_clcb_by_conn_id |
| * |
| * Description find clcb by Connection ID |
| * |
| * Returns Pointer to the found link conenction control block. |
| * |
| ******************************************************************************/ |
| static tGATT_PROFILE_CLCB* gatt_profile_find_clcb_by_conn_id(uint16_t conn_id) { |
| uint8_t i_clcb; |
| tGATT_PROFILE_CLCB* p_clcb = NULL; |
| |
| for (i_clcb = 0, p_clcb = gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; |
| i_clcb++, p_clcb++) { |
| if (p_clcb->in_use && p_clcb->conn_id == conn_id) return p_clcb; |
| } |
| |
| return NULL; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function gatt_profile_find_clcb_by_bd_addr |
| * |
| * Description The function searches all LCBs with macthing bd address. |
| * |
| * Returns Pointer to the found link conenction control block. |
| * |
| ******************************************************************************/ |
| static tGATT_PROFILE_CLCB* gatt_profile_find_clcb_by_bd_addr( |
| BD_ADDR bda, tBT_TRANSPORT transport) { |
| uint8_t i_clcb; |
| tGATT_PROFILE_CLCB* p_clcb = NULL; |
| |
| for (i_clcb = 0, p_clcb = gatt_cb.profile_clcb; i_clcb < GATT_MAX_APPS; |
| i_clcb++, p_clcb++) { |
| if (p_clcb->in_use && p_clcb->transport == transport && p_clcb->connected && |
| !memcmp(p_clcb->bda, bda, BD_ADDR_LEN)) |
| return p_clcb; |
| } |
| |
| return NULL; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function gatt_profile_clcb_alloc |
| * |
| * Description The function allocates a GATT profile connection link |
| * control block |
| * |
| * Returns NULL if not found. Otherwise pointer to the connection link |
| * block. |
| * |
| ******************************************************************************/ |
| tGATT_PROFILE_CLCB* gatt_profile_clcb_alloc(uint16_t conn_id, BD_ADDR bda, |
| tBT_TRANSPORT tranport) { |
| uint8_t i_clcb = 0; |
| tGATT_PROFILE_CLCB* p_clcb = NULL; |
| |
| for (i_clcb = 0, p_clcb = gatt_cb.profile_clcb; i_clcb < GATT_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->transport = tranport; |
| memcpy(p_clcb->bda, bda, BD_ADDR_LEN); |
| break; |
| } |
| } |
| if (i_clcb < GATT_MAX_APPS) return p_clcb; |
| |
| return NULL; |
| } |
| |
| /******************************************************************************* |
| * |
| * Function gatt_profile_clcb_dealloc |
| * |
| * Description The function deallocates a GATT profile connection link |
| * control block |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| void gatt_profile_clcb_dealloc(tGATT_PROFILE_CLCB* p_clcb) { |
| memset(p_clcb, 0, sizeof(tGATT_PROFILE_CLCB)); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function gatt_request_cback |
| * |
| * Description GATT profile attribute access request callback. |
| * |
| * Returns void. |
| * |
| ******************************************************************************/ |
| static void gatt_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; |
| bool ignore = false; |
| |
| memset(&rsp_msg, 0, sizeof(tGATTS_RSP)); |
| |
| switch (type) { |
| case GATTS_REQ_TYPE_READ_CHARACTERISTIC: |
| case GATTS_REQ_TYPE_READ_DESCRIPTOR: |
| status = GATT_READ_NOT_PERMIT; |
| break; |
| |
| case GATTS_REQ_TYPE_WRITE_CHARACTERISTIC: |
| case GATTS_REQ_TYPE_WRITE_DESCRIPTOR: |
| status = GATT_WRITE_NOT_PERMIT; |
| break; |
| |
| case GATTS_REQ_TYPE_WRITE_EXEC: |
| case GATT_CMD_WRITE: |
| ignore = true; |
| GATT_TRACE_EVENT("Ignore GATT_REQ_EXEC_WRITE/WRITE_CMD"); |
| break; |
| |
| case GATTS_REQ_TYPE_MTU: |
| GATT_TRACE_EVENT("Get MTU exchange new mtu size: %d", p_data->mtu); |
| ignore = true; |
| break; |
| |
| default: |
| GATT_TRACE_EVENT("Unknown/unexpected LE GAP ATT request: 0x%02x", type); |
| break; |
| } |
| |
| if (!ignore) GATTS_SendRsp(conn_id, trans_id, status, &rsp_msg); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function gatt_connect_cback |
| * |
| * Description Gatt profile connection callback. |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void gatt_connect_cback(UNUSED_ATTR tGATT_IF gatt_if, BD_ADDR bda, |
| uint16_t conn_id, bool connected, |
| tGATT_DISCONN_REASON reason, |
| tBT_TRANSPORT transport) { |
| GATT_TRACE_EVENT("%s: from %08x%04x connected:%d conn_id=%d reason = 0x%04x", |
| __func__, |
| (bda[0] << 24) + (bda[1] << 16) + (bda[2] << 8) + bda[3], |
| (bda[4] << 8) + bda[5], connected, conn_id, reason); |
| |
| tGATT_PROFILE_CLCB* p_clcb = |
| gatt_profile_find_clcb_by_bd_addr(bda, transport); |
| if (p_clcb == NULL) return; |
| |
| if (connected) { |
| p_clcb->conn_id = conn_id; |
| p_clcb->connected = true; |
| |
| if (p_clcb->ccc_stage == GATT_SVC_CHANGED_CONNECTING) { |
| p_clcb->ccc_stage++; |
| gatt_cl_start_config_ccc(p_clcb); |
| } |
| } else { |
| gatt_profile_clcb_dealloc(p_clcb); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function gatt_profile_db_init |
| * |
| * Description Initializa the GATT profile attribute database. |
| * |
| ******************************************************************************/ |
| void gatt_profile_db_init(void) { |
| tBT_UUID app_uuid = {LEN_UUID_128, {0}}; |
| uint16_t service_handle = 0; |
| |
| /* Fill our internal UUID with a fixed pattern 0x81 */ |
| memset(&app_uuid.uu.uuid128, 0x81, LEN_UUID_128); |
| |
| /* Create a GATT profile service */ |
| gatt_cb.gatt_if = GATT_Register(&app_uuid, &gatt_profile_cback); |
| GATT_StartIf(gatt_cb.gatt_if); |
| |
| bt_uuid_t service_uuid; |
| uuid_128_from_16(&service_uuid, UUID_SERVCLASS_GATT_SERVER); |
| |
| bt_uuid_t char_uuid; |
| uuid_128_from_16(&char_uuid, GATT_UUID_GATT_SRV_CHGD); |
| |
| btgatt_db_element_t service[] = { |
| {.type = BTGATT_DB_PRIMARY_SERVICE, .uuid = service_uuid}, |
| {.type = BTGATT_DB_CHARACTERISTIC, |
| .uuid = char_uuid, |
| .properties = GATT_CHAR_PROP_BIT_INDICATE, |
| .permissions = 0}}; |
| |
| GATTS_AddService(gatt_cb.gatt_if, service, |
| sizeof(service) / sizeof(btgatt_db_element_t)); |
| |
| service_handle = service[0].attribute_handle; |
| gatt_cb.handle_of_h_r = service[1].attribute_handle; |
| |
| GATT_TRACE_ERROR("gatt_profile_db_init: gatt_if=%d", gatt_cb.gatt_if); |
| } |
| |
| /******************************************************************************* |
| * |
| * Function gatt_disc_res_cback |
| * |
| * Description Gatt profile discovery result callback |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void gatt_disc_res_cback(uint16_t conn_id, tGATT_DISC_TYPE disc_type, |
| tGATT_DISC_RES* p_data) { |
| tGATT_PROFILE_CLCB* p_clcb = gatt_profile_find_clcb_by_conn_id(conn_id); |
| |
| if (p_clcb == NULL) return; |
| |
| switch (disc_type) { |
| case GATT_DISC_SRVC_BY_UUID: /* stage 1 */ |
| p_clcb->e_handle = p_data->value.group_value.e_handle; |
| p_clcb->ccc_result++; |
| break; |
| |
| case GATT_DISC_CHAR: /* stage 2 */ |
| p_clcb->s_handle = p_data->value.dclr_value.val_handle; |
| p_clcb->ccc_result++; |
| break; |
| |
| case GATT_DISC_CHAR_DSCPT: /* stage 3 */ |
| if (p_data->type.uu.uuid16 == GATT_UUID_CHAR_CLIENT_CONFIG) { |
| p_clcb->s_handle = p_data->handle; |
| p_clcb->ccc_result++; |
| } |
| break; |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function gatt_disc_cmpl_cback |
| * |
| * Description Gatt profile discovery complete callback |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void gatt_disc_cmpl_cback(uint16_t conn_id, tGATT_DISC_TYPE disc_type, |
| tGATT_STATUS status) { |
| tGATT_PROFILE_CLCB* p_clcb = gatt_profile_find_clcb_by_conn_id(conn_id); |
| |
| if (p_clcb == NULL) return; |
| |
| if (status == GATT_SUCCESS && p_clcb->ccc_result > 0) { |
| p_clcb->ccc_result = 0; |
| p_clcb->ccc_stage++; |
| gatt_cl_start_config_ccc(p_clcb); |
| } else { |
| GATT_TRACE_ERROR("%s() - Unable to register for service changed indication", |
| __func__); |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function gatt_cl_op_cmpl_cback |
| * |
| * Description Gatt profile client operation complete callback |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void gatt_cl_op_cmpl_cback(UNUSED_ATTR uint16_t conn_id, |
| UNUSED_ATTR tGATTC_OPTYPE op, |
| UNUSED_ATTR tGATT_STATUS status, |
| UNUSED_ATTR tGATT_CL_COMPLETE* p_data) {} |
| |
| /******************************************************************************* |
| * |
| * Function gatt_cl_start_config_ccc |
| * |
| * Description Gatt profile start configure service change CCC |
| * |
| * Returns void |
| * |
| ******************************************************************************/ |
| static void gatt_cl_start_config_ccc(tGATT_PROFILE_CLCB* p_clcb) { |
| tGATT_DISC_PARAM srvc_disc_param; |
| tGATT_VALUE ccc_value; |
| |
| GATT_TRACE_DEBUG("%s() - stage: %d", __func__, p_clcb->ccc_stage); |
| |
| memset(&srvc_disc_param, 0, sizeof(tGATT_DISC_PARAM)); |
| memset(&ccc_value, 0, sizeof(tGATT_VALUE)); |
| |
| switch (p_clcb->ccc_stage) { |
| case GATT_SVC_CHANGED_SERVICE: /* discover GATT service */ |
| srvc_disc_param.s_handle = 1; |
| srvc_disc_param.e_handle = 0xffff; |
| srvc_disc_param.service.len = 2; |
| srvc_disc_param.service.uu.uuid16 = UUID_SERVCLASS_GATT_SERVER; |
| GATTC_Discover(p_clcb->conn_id, GATT_DISC_SRVC_BY_UUID, &srvc_disc_param); |
| break; |
| |
| case GATT_SVC_CHANGED_CHARACTERISTIC: /* discover service change char */ |
| srvc_disc_param.s_handle = 1; |
| srvc_disc_param.e_handle = p_clcb->e_handle; |
| srvc_disc_param.service.len = 2; |
| srvc_disc_param.service.uu.uuid16 = GATT_UUID_GATT_SRV_CHGD; |
| GATTC_Discover(p_clcb->conn_id, GATT_DISC_CHAR, &srvc_disc_param); |
| break; |
| |
| case GATT_SVC_CHANGED_DESCRIPTOR: /* discover service change ccc */ |
| srvc_disc_param.s_handle = p_clcb->s_handle; |
| srvc_disc_param.e_handle = p_clcb->e_handle; |
| GATTC_Discover(p_clcb->conn_id, GATT_DISC_CHAR_DSCPT, &srvc_disc_param); |
| break; |
| |
| case GATT_SVC_CHANGED_CONFIGURE_CCCD: /* write ccc */ |
| ccc_value.handle = p_clcb->s_handle; |
| ccc_value.len = 2; |
| ccc_value.value[0] = GATT_CLT_CONFIG_INDICATION; |
| GATTC_Write(p_clcb->conn_id, GATT_WRITE, &ccc_value); |
| break; |
| } |
| } |
| |
| /******************************************************************************* |
| * |
| * Function GATT_ConfigServiceChangeCCC |
| * |
| * Description Configure service change indication on remote device |
| * |
| * Returns none |
| * |
| ******************************************************************************/ |
| void GATT_ConfigServiceChangeCCC(BD_ADDR remote_bda, bool enable, |
| tBT_TRANSPORT transport) { |
| tGATT_PROFILE_CLCB* p_clcb = |
| gatt_profile_find_clcb_by_bd_addr(remote_bda, transport); |
| |
| if (p_clcb == NULL) |
| p_clcb = gatt_profile_clcb_alloc(0, remote_bda, transport); |
| |
| if (p_clcb == NULL) return; |
| |
| if (GATT_GetConnIdIfConnected(gatt_cb.gatt_if, remote_bda, &p_clcb->conn_id, |
| transport)) { |
| p_clcb->connected = true; |
| } |
| /* hold the link here */ |
| GATT_Connect(gatt_cb.gatt_if, remote_bda, true, transport, true); |
| p_clcb->ccc_stage = GATT_SVC_CHANGED_CONNECTING; |
| |
| if (!p_clcb->connected) { |
| /* wait for connection */ |
| return; |
| } |
| |
| p_clcb->ccc_stage++; |
| gatt_cl_start_config_ccc(p_clcb); |
| } |
