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369 lines
12 KiB
369 lines
12 KiB
/******************************************************************************
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*
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* Copyright 2014 The Android Open Source Project
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* Copyright 2003-2012 Broadcom Corporation
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/******************************************************************************
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*
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* This file contains the audio gateway functions performing SDP
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* operations.
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*
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******************************************************************************/
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#include <cstdint>
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#include "bta/hf_client/bta_hf_client_int.h"
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#include "bta/include/bta_ag_api.h"
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#include "bta/include/bta_hf_client_api.h"
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#include "bta/sys/bta_sys.h"
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#include "osi/include/allocator.h"
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#include "osi/include/properties.h"
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#include "stack/btm/btm_sec.h"
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#include "stack/include/btm_api.h"
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#include "stack/include/port_api.h"
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#include "stack/include/sdpdefs.h"
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#include "types/bluetooth/uuid.h"
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using bluetooth::Uuid;
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/* Number of protocol elements in protocol element list. */
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#define BTA_HF_CLIENT_NUM_PROTO_ELEMS 2
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/* Number of elements in service class id list. */
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#define BTA_HF_CLIENT_NUM_SVC_ELEMS 2
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/*******************************************************************************
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*
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* Function bta_hf_client_sdp_cback
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*
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* Description SDP callback function.
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*
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*
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* Returns void
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*
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******************************************************************************/
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static void bta_hf_client_sdp_cback(tSDP_STATUS status, void* data) {
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uint16_t event;
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tBTA_HF_CLIENT_DISC_RESULT* p_buf = (tBTA_HF_CLIENT_DISC_RESULT*)osi_malloc(
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sizeof(tBTA_HF_CLIENT_DISC_RESULT));
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APPL_TRACE_DEBUG("bta_hf_client_sdp_cback status:0x%x", status);
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tBTA_HF_CLIENT_CB* client_cb = (tBTA_HF_CLIENT_CB*)data;
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/* set event according to int/acp */
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if (client_cb->role == BTA_HF_CLIENT_ACP)
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event = BTA_HF_CLIENT_DISC_ACP_RES_EVT;
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else
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event = BTA_HF_CLIENT_DISC_INT_RES_EVT;
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p_buf->hdr.event = event;
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p_buf->hdr.layer_specific = client_cb->handle;
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p_buf->status = status;
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bta_sys_sendmsg(p_buf);
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}
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/******************************************************************************
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*
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* Function bta_hf_client_add_record
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*
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* Description This function is called by a server application to add
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* HFP Client information to an SDP record. Prior to
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* calling this function the application must call
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* SDP_CreateRecord() to create an SDP record.
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*
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* Returns true if function execution succeeded,
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* false if function execution failed.
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*
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*****************************************************************************/
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bool bta_hf_client_add_record(const char* p_service_name, uint8_t scn,
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tBTA_HF_CLIENT_FEAT features,
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uint32_t sdp_handle) {
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tSDP_PROTOCOL_ELEM proto_elem_list[BTA_HF_CLIENT_NUM_PROTO_ELEMS];
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uint16_t svc_class_id_list[BTA_HF_CLIENT_NUM_SVC_ELEMS];
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uint16_t browse_list[] = {UUID_SERVCLASS_PUBLIC_BROWSE_GROUP};
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uint16_t version;
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uint16_t profile_uuid;
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bool result = true;
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uint8_t buf[2];
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uint16_t sdp_features = 0;
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APPL_TRACE_DEBUG("bta_hf_client_add_record");
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memset(proto_elem_list, 0,
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BTA_HF_CLIENT_NUM_PROTO_ELEMS * sizeof(tSDP_PROTOCOL_ELEM));
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/* add the protocol element sequence */
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proto_elem_list[0].protocol_uuid = UUID_PROTOCOL_L2CAP;
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proto_elem_list[0].num_params = 0;
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proto_elem_list[1].protocol_uuid = UUID_PROTOCOL_RFCOMM;
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proto_elem_list[1].num_params = 1;
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proto_elem_list[1].params[0] = scn;
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result &= SDP_AddProtocolList(sdp_handle, BTA_HF_CLIENT_NUM_PROTO_ELEMS,
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proto_elem_list);
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/* add service class id list */
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svc_class_id_list[0] = UUID_SERVCLASS_HF_HANDSFREE;
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svc_class_id_list[1] = UUID_SERVCLASS_GENERIC_AUDIO;
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result &= SDP_AddServiceClassIdList(sdp_handle, BTA_HF_CLIENT_NUM_SVC_ELEMS,
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svc_class_id_list);
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/* add profile descriptor list */
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profile_uuid = UUID_SERVCLASS_HF_HANDSFREE;
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version = BTA_HFP_VERSION;
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result &= SDP_AddProfileDescriptorList(sdp_handle, profile_uuid, version);
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/* add service name */
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if (p_service_name != NULL && p_service_name[0] != 0) {
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result &= SDP_AddAttribute(
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sdp_handle, ATTR_ID_SERVICE_NAME, TEXT_STR_DESC_TYPE,
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(uint32_t)(strlen(p_service_name) + 1), (uint8_t*)p_service_name);
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}
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/* add features */
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if (features & BTA_HF_CLIENT_FEAT_ECNR)
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sdp_features |= BTA_HF_CLIENT_FEAT_ECNR;
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if (features & BTA_HF_CLIENT_FEAT_3WAY)
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sdp_features |= BTA_HF_CLIENT_FEAT_3WAY;
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if (features & BTA_HF_CLIENT_FEAT_CLI) sdp_features |= BTA_HF_CLIENT_FEAT_CLI;
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if (features & BTA_HF_CLIENT_FEAT_VREC)
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sdp_features |= BTA_HF_CLIENT_FEAT_VREC;
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if (features & BTA_HF_CLIENT_FEAT_VOL) sdp_features |= BTA_HF_CLIENT_FEAT_VOL;
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/* Codec bit position is different in SDP (bit 5) and in BRSF (bit 7) */
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if (features & BTA_HF_CLIENT_FEAT_CODEC) sdp_features |= 0x0020;
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UINT16_TO_BE_FIELD(buf, sdp_features);
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result &= SDP_AddAttribute(sdp_handle, ATTR_ID_SUPPORTED_FEATURES,
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UINT_DESC_TYPE, 2, buf);
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/* add browse group list */
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result &= SDP_AddUuidSequence(sdp_handle, ATTR_ID_BROWSE_GROUP_LIST, 1,
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browse_list);
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return result;
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}
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/*******************************************************************************
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*
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* Function bta_hf_client_create_record
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*
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* Description Create SDP record for registered service.
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*
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*
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* Returns void
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*
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******************************************************************************/
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void bta_hf_client_create_record(tBTA_HF_CLIENT_CB_ARR* client_cb_arr,
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const char* p_service_name) {
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/* add sdp record if not already registered */
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if (client_cb_arr->sdp_handle == 0) {
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client_cb_arr->sdp_handle = SDP_CreateRecord();
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client_cb_arr->scn = BTM_AllocateSCN();
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bta_hf_client_add_record(p_service_name, client_cb_arr->scn,
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client_cb_arr->features,
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client_cb_arr->sdp_handle);
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bta_sys_add_uuid(UUID_SERVCLASS_HF_HANDSFREE);
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}
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}
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/*******************************************************************************
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*
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* Function bta_hf_client_del_record
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*
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* Description Delete SDP record for registered service.
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*
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*
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* Returns void
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*
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******************************************************************************/
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void bta_hf_client_del_record(tBTA_HF_CLIENT_CB_ARR* client_cb) {
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APPL_TRACE_DEBUG("%s", __func__);
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if (client_cb->sdp_handle != 0) {
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SDP_DeleteRecord(client_cb->sdp_handle);
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client_cb->sdp_handle = 0;
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BTM_FreeSCN(client_cb->scn);
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RFCOMM_ClearSecurityRecord(client_cb->scn);
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bta_sys_remove_uuid(UUID_SERVCLASS_HF_HANDSFREE);
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}
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}
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/*******************************************************************************
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*
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* Function bta_hf_client_sdp_find_attr
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*
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* Description Process SDP discovery results to find requested attribute
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*
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*
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* Returns true if results found, false otherwise.
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*
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******************************************************************************/
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bool bta_hf_client_sdp_find_attr(tBTA_HF_CLIENT_CB* client_cb) {
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tSDP_DISC_REC* p_rec = NULL;
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tSDP_DISC_ATTR* p_attr;
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tSDP_PROTOCOL_ELEM pe;
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bool result = false;
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client_cb->peer_version = HFP_VERSION_1_1; /* Default version */
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/* loop through all records we found */
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while (true) {
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/* get next record; if none found, we're done */
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p_rec = SDP_FindServiceInDb(client_cb->p_disc_db,
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UUID_SERVCLASS_AG_HANDSFREE, p_rec);
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if (p_rec == NULL) {
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break;
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}
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/* get scn from proto desc list if initiator */
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if (client_cb->role == BTA_HF_CLIENT_INT) {
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if (SDP_FindProtocolListElemInRec(p_rec, UUID_PROTOCOL_RFCOMM, &pe)) {
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client_cb->peer_scn = (uint8_t)pe.params[0];
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} else {
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continue;
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}
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}
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/* get profile version (if failure, version parameter is not updated) */
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SDP_FindProfileVersionInRec(p_rec, UUID_SERVCLASS_HF_HANDSFREE,
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&client_cb->peer_version);
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/* get features */
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p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_SUPPORTED_FEATURES);
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if (p_attr != NULL) {
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/* Found attribute. Get value. */
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/* There might be race condition between SDP and BRSF. */
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/* Do not update if we already received BRSF. */
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if (client_cb->peer_features == 0) {
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client_cb->peer_features = p_attr->attr_value.v.u16;
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/* SDP and BRSF WBS bit are different, correct it if set */
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if (client_cb->peer_features & 0x0020) {
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client_cb->peer_features &= ~0x0020;
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client_cb->peer_features |= BTA_HF_CLIENT_PEER_CODEC;
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}
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/* get network for ability to reject calls */
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p_attr = SDP_FindAttributeInRec(p_rec, ATTR_ID_NETWORK);
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if (p_attr != NULL) {
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if (p_attr->attr_value.v.u16 == 0x01) {
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client_cb->peer_features |= BTA_HF_CLIENT_PEER_REJECT;
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}
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}
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}
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}
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/* found what we needed */
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result = true;
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break;
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}
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APPL_TRACE_DEBUG("%s: peer_version=0x%x peer_features=0x%x", __func__,
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client_cb->peer_version, client_cb->peer_features);
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return result;
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}
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/*******************************************************************************
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*
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* Function bta_hf_client_do_disc
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*
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* Description Do service discovery.
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*
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*
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* Returns void
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*
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******************************************************************************/
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void bta_hf_client_do_disc(tBTA_HF_CLIENT_CB* client_cb) {
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Uuid uuid_list[1];
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uint16_t num_uuid = 1;
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uint16_t attr_list[4];
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uint8_t num_attr;
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bool db_inited = false;
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/* initiator; get proto list and features */
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if (client_cb->role == BTA_HF_CLIENT_INT) {
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attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST;
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attr_list[1] = ATTR_ID_PROTOCOL_DESC_LIST;
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attr_list[2] = ATTR_ID_BT_PROFILE_DESC_LIST;
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attr_list[3] = ATTR_ID_SUPPORTED_FEATURES;
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num_attr = 4;
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uuid_list[0] = Uuid::From16Bit(UUID_SERVCLASS_AG_HANDSFREE);
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}
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/* acceptor; get features */
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else {
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attr_list[0] = ATTR_ID_SERVICE_CLASS_ID_LIST;
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attr_list[1] = ATTR_ID_BT_PROFILE_DESC_LIST;
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attr_list[2] = ATTR_ID_SUPPORTED_FEATURES;
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num_attr = 3;
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uuid_list[0] = Uuid::From16Bit(UUID_SERVCLASS_AG_HANDSFREE);
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}
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/* allocate buffer for sdp database */
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client_cb->p_disc_db = (tSDP_DISCOVERY_DB*)osi_malloc(BT_DEFAULT_BUFFER_SIZE);
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/* set up service discovery database; attr happens to be attr_list len */
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db_inited = SDP_InitDiscoveryDb(client_cb->p_disc_db, BT_DEFAULT_BUFFER_SIZE,
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num_uuid, uuid_list, num_attr, attr_list);
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if (db_inited) {
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/*Service discovery not initiated */
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db_inited = SDP_ServiceSearchAttributeRequest2(
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client_cb->peer_addr, client_cb->p_disc_db, bta_hf_client_sdp_cback,
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(void*)client_cb);
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}
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if (!db_inited) {
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/*free discover db */
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osi_free_and_reset((void**)&client_cb->p_disc_db);
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/* sent failed event */
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tBTA_HF_CLIENT_DATA msg;
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msg.hdr.layer_specific = client_cb->handle;
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bta_hf_client_sm_execute(BTA_HF_CLIENT_DISC_FAIL_EVT, &msg);
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}
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}
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/*******************************************************************************
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*
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* Function bta_hf_client_free_db
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*
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* Description Free discovery database.
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*
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*
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* Returns void
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*
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******************************************************************************/
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void bta_hf_client_free_db(tBTA_HF_CLIENT_DATA* p_data) {
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CHECK(p_data != NULL);
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tBTA_HF_CLIENT_CB* client_cb =
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bta_hf_client_find_cb_by_handle(p_data->hdr.layer_specific);
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if (client_cb == NULL) {
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APPL_TRACE_ERROR("%s: cb not found for handle %d", __func__,
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p_data->hdr.layer_specific);
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return;
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}
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osi_free_and_reset((void**)&client_cb->p_disc_db);
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}
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