/******************************************************************************
*
* Copyright 2004-2012 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 audio gateway functions controlling the RFCOMM
* connections.
*
******************************************************************************/
#include <cstring>
#include <base/bind.h>
#include "bt_common.h"
#include "bta_ag_api.h"
#include "bta_ag_int.h"
#include "btm_api.h"
#include "osi/include/osi.h"
#include "port_api.h"
#include "rfcdefs.h"
#include "stack/include/btu.h"
#include "utl.h"
/* Event mask for RfCOMM port callback */
#define BTA_AG_PORT_EV_MASK PORT_EV_RXCHAR
/* each scb has its own rfcomm callbacks */
void bta_ag_port_cback_1(uint32_t code, uint16_t port_handle);
void bta_ag_port_cback_2(uint32_t code, uint16_t port_handle);
void bta_ag_port_cback_3(uint32_t code, uint16_t port_handle);
void bta_ag_port_cback_4(uint32_t code, uint16_t port_handle);
void bta_ag_port_cback_5(uint32_t code, uint16_t port_handle);
void bta_ag_port_cback_6(uint32_t code, uint16_t port_handle);
void bta_ag_mgmt_cback_1(uint32_t code, uint16_t port_handle);
void bta_ag_mgmt_cback_2(uint32_t code, uint16_t port_handle);
void bta_ag_mgmt_cback_3(uint32_t code, uint16_t port_handle);
void bta_ag_mgmt_cback_4(uint32_t code, uint16_t port_handle);
void bta_ag_mgmt_cback_5(uint32_t code, uint16_t port_handle);
void bta_ag_mgmt_cback_6(uint32_t code, uint16_t port_handle);
/* rfcomm callback function tables */
typedef tPORT_CALLBACK* tBTA_AG_PORT_CBACK;
const tBTA_AG_PORT_CBACK bta_ag_port_cback_tbl[] = {
bta_ag_port_cback_1, bta_ag_port_cback_2, bta_ag_port_cback_3,
bta_ag_port_cback_4, bta_ag_port_cback_5, bta_ag_port_cback_6};
const tBTA_AG_PORT_CBACK bta_ag_mgmt_cback_tbl[] = {
bta_ag_mgmt_cback_1, bta_ag_mgmt_cback_2, bta_ag_mgmt_cback_3,
bta_ag_mgmt_cback_4, bta_ag_mgmt_cback_5, bta_ag_mgmt_cback_6};
/*******************************************************************************
*
* Function bta_ag_port_cback
*
* Description RFCOMM Port callback
*
*
* Returns void
*
******************************************************************************/
static void bta_ag_port_cback(UNUSED_ATTR uint32_t code, uint16_t port_handle,
uint16_t handle) {
tBTA_AG_SCB* p_scb = bta_ag_scb_by_idx(handle);
if (p_scb != nullptr) {
/* ignore port events for port handles other than connected handle */
if (port_handle != p_scb->conn_handle) {
APPL_TRACE_ERROR(
"ag_port_cback ignoring handle:%d conn_handle = %d other handle = %d",
port_handle, p_scb->conn_handle, handle);
return;
}
if (!bta_ag_scb_open(p_scb)) {
LOG(ERROR) << __func__ << ": rfcomm data on an unopened control block "
<< handle << " peer_addr " << p_scb->peer_addr << " state "
<< std::to_string(p_scb->state);
}
do_in_main_thread(FROM_HERE,
base::Bind(&bta_ag_sm_execute_by_handle, handle,
BTA_AG_RFC_DATA_EVT, tBTA_AG_DATA::kEmpty));
}
}
/*******************************************************************************
*
* Function bta_ag_mgmt_cback
*
* Description RFCOMM management callback
*
*
* Returns void
*
******************************************************************************/
static void bta_ag_mgmt_cback(uint32_t code, uint16_t port_handle,
uint16_t handle) {
tBTA_AG_SCB* p_scb = bta_ag_scb_by_idx(handle);
APPL_TRACE_DEBUG("%s: code=%d, port_handle=%d, scb_handle=%d, p_scb=0x%08x",
__func__, code, port_handle, handle, p_scb);
if (p_scb == nullptr) {
LOG(WARNING) << __func__ << ": cannot find scb, code=" << code
<< ", port_handle=" << port_handle << ", handle=" << handle;
return;
}
/* ignore close event for port handles other than connected handle */
if ((code != PORT_SUCCESS) && (port_handle != p_scb->conn_handle)) {
LOG(WARNING) << __func__ << ": ignore open failure for unmatched "
<< "port_handle " << port_handle << ", scb_handle=" << handle;
return;
}
uint16_t event;
if (code == PORT_SUCCESS) {
bool found_handle = false;
if (p_scb->conn_handle) {
/* Outgoing connection */
if (port_handle == p_scb->conn_handle) {
found_handle = true;
}
} else {
/* Incoming connection */
for (uint16_t service_port_handle : p_scb->serv_handle) {
if (port_handle == service_port_handle) {
found_handle = true;
break;
}
}
}
if (!found_handle) {
LOG(ERROR) << __func__ << ": port opened successfully, but port_handle "
<< port_handle << " is unknown"
<< ", scb_handle=" << handle;
return;
}
event = BTA_AG_RFC_OPEN_EVT;
} else if (port_handle == p_scb->conn_handle) {
/* distinguish server close events */
event = BTA_AG_RFC_CLOSE_EVT;
} else {
event = BTA_AG_RFC_SRV_CLOSE_EVT;
}
tBTA_AG_DATA data = {};
data.rfc.port_handle = port_handle;
do_in_main_thread(
FROM_HERE, base::Bind(&bta_ag_sm_execute_by_handle, handle, event, data));
}
/*******************************************************************************
*
* Function bta_ag_port_cback_1 to 6
* bta_ag_mgmt_cback_1 to 6
*
* Description RFCOMM callback functions. This is an easy way to
* distinguish scb from the callback.
*
*
* Returns void
*
******************************************************************************/
void bta_ag_mgmt_cback_1(uint32_t code, uint16_t port_handle) {
bta_ag_mgmt_cback(code, port_handle, 1);
}
void bta_ag_mgmt_cback_2(uint32_t code, uint16_t port_handle) {
bta_ag_mgmt_cback(code, port_handle, 2);
}
void bta_ag_mgmt_cback_3(uint32_t code, uint16_t port_handle) {
bta_ag_mgmt_cback(code, port_handle, 3);
}
void bta_ag_mgmt_cback_4(uint32_t code, uint16_t port_handle) {
bta_ag_mgmt_cback(code, port_handle, 4);
}
void bta_ag_mgmt_cback_5(uint32_t code, uint16_t port_handle) {
bta_ag_mgmt_cback(code, port_handle, 5);
}
void bta_ag_mgmt_cback_6(uint32_t code, uint16_t port_handle) {
bta_ag_mgmt_cback(code, port_handle, 6);
}
void bta_ag_port_cback_1(uint32_t code, uint16_t port_handle) {
bta_ag_port_cback(code, port_handle, 1);
}
void bta_ag_port_cback_2(uint32_t code, uint16_t port_handle) {
bta_ag_port_cback(code, port_handle, 2);
}
void bta_ag_port_cback_3(uint32_t code, uint16_t port_handle) {
bta_ag_port_cback(code, port_handle, 3);
}
void bta_ag_port_cback_4(uint32_t code, uint16_t port_handle) {
bta_ag_port_cback(code, port_handle, 4);
}
void bta_ag_port_cback_5(uint32_t code, uint16_t port_handle) {
bta_ag_port_cback(code, port_handle, 5);
}
void bta_ag_port_cback_6(uint32_t code, uint16_t port_handle) {
bta_ag_port_cback(code, port_handle, 6);
}
/*******************************************************************************
*
* Function bta_ag_setup_port
*
* Description Setup RFCOMM port for use by AG.
*
*
* Returns void
*
******************************************************************************/
void bta_ag_setup_port(tBTA_AG_SCB* p_scb, uint16_t handle) {
int port_callback_index = bta_ag_scb_to_idx(p_scb) - 1;
CHECK_GE(port_callback_index, 0)
<< "invalid callback index, handle=" << handle << ", bd_addr"
<< p_scb->peer_addr;
CHECK_LT(port_callback_index,
static_cast<int>(sizeof(bta_ag_port_cback_tbl) /
sizeof(bta_ag_port_cback_tbl[0])))
<< "callback index out of bound, handle=" << handle << ", bd_addr"
<< p_scb->peer_addr;
PORT_SetEventMask(handle, BTA_AG_PORT_EV_MASK);
PORT_SetEventCallback(handle, bta_ag_port_cback_tbl[port_callback_index]);
}
/*******************************************************************************
*
* Function bta_ag_start_servers
*
* Description Setup RFCOMM servers for use by AG.
*
*
* Returns void
*
******************************************************************************/
void bta_ag_start_servers(tBTA_AG_SCB* p_scb, tBTA_SERVICE_MASK services) {
services >>= BTA_HSP_SERVICE_ID;
for (int i = 0; i < BTA_AG_NUM_IDX && services != 0; i++, services >>= 1) {
/* if service is set in mask */
if (services & 1) {
BTM_SetSecurityLevel(false, "", bta_ag_sec_id[i], p_scb->serv_sec_mask,
BT_PSM_RFCOMM, BTM_SEC_PROTO_RFCOMM,
bta_ag_cb.profile[i].scn);
int management_callback_index = bta_ag_scb_to_idx(p_scb) - 1;
CHECK_GE(management_callback_index, 0)
<< "invalid callback index, services=" << loghex(services)
<< ", bd_addr=" << p_scb->peer_addr;
CHECK_LT(management_callback_index,
static_cast<int>(sizeof(bta_ag_mgmt_cback_tbl) /
sizeof(bta_ag_mgmt_cback_tbl[0])))
<< "callback index out of bound, services=" << loghex(services)
<< ", bd_addr" << p_scb->peer_addr;
int status = RFCOMM_CreateConnection(
bta_ag_uuid[i], bta_ag_cb.profile[i].scn, true, BTA_AG_MTU,
RawAddress::kAny, &(p_scb->serv_handle[i]),
bta_ag_mgmt_cback_tbl[management_callback_index]);
if (status == PORT_SUCCESS) {
bta_ag_setup_port(p_scb, p_scb->serv_handle[i]);
} else {
/* TODO: CR#137125 to handle to error properly */
LOG(ERROR) << __func__ << ": RFCOMM_CreateConnection ERROR " << status
<< ", p_scb=" << p_scb << ", services=" << loghex(services)
<< ", mgmt_cback_index=" << management_callback_index;
}
APPL_TRACE_DEBUG("%s: p_scb=0x%08x, services=0x%04x, mgmt_cback_index=%d",
__func__, p_scb, services, management_callback_index);
}
}
}
/*******************************************************************************
*
* Function bta_ag_close_servers
*
* Description Close RFCOMM servers port for use by AG.
*
*
* Returns void
*
******************************************************************************/
void bta_ag_close_servers(tBTA_AG_SCB* p_scb, tBTA_SERVICE_MASK services) {
services >>= BTA_HSP_SERVICE_ID;
for (int i = 0; i < BTA_AG_NUM_IDX && services != 0; i++, services >>= 1) {
/* if service is set in mask */
if (services & 1) {
RFCOMM_RemoveServer(p_scb->serv_handle[i]);
p_scb->serv_handle[i] = 0;
}
}
}
/*******************************************************************************
*
* Function bta_ag_is_server_closed
*
* Description Returns true if all servers are closed.
*
*
* Returns true if all servers are closed, false otherwise
*
******************************************************************************/
bool bta_ag_is_server_closed(tBTA_AG_SCB* p_scb) {
uint8_t xx;
bool is_closed = true;
for (xx = 0; xx < BTA_AG_NUM_IDX; xx++) {
if (p_scb->serv_handle[xx] != 0) is_closed = false;
}
return is_closed;
}
/*******************************************************************************
*
* Function bta_ag_rfc_do_open
*
* Description Open an RFCOMM connection to the peer device.
*
*
* Returns void
*
******************************************************************************/
void bta_ag_rfc_do_open(tBTA_AG_SCB* p_scb, const tBTA_AG_DATA& data) {
BTM_SetSecurityLevel(true, "", bta_ag_sec_id[p_scb->conn_service],
p_scb->cli_sec_mask, BT_PSM_RFCOMM, BTM_SEC_PROTO_RFCOMM,
p_scb->peer_scn);
int management_callback_index = bta_ag_scb_to_idx(p_scb) - 1;
int status = RFCOMM_CreateConnection(
bta_ag_uuid[p_scb->conn_service], p_scb->peer_scn, false, BTA_AG_MTU,
p_scb->peer_addr, &(p_scb->conn_handle),
bta_ag_mgmt_cback_tbl[management_callback_index]);
APPL_TRACE_DEBUG(
"%s: p_scb=0x%08x, conn_handle=%d, mgmt_cback_index=%d,"
" status=%d",
__func__, p_scb, p_scb->conn_handle, management_callback_index, status);
if (status == PORT_SUCCESS) {
bta_ag_setup_port(p_scb, p_scb->conn_handle);
} else {
/* RFCOMM create connection failed; send ourselves RFCOMM close event */
LOG(ERROR) << __func__ << ": RFCOMM_CreateConnection ERROR " << status
<< " for " << p_scb->peer_addr;
bta_ag_sm_execute(p_scb, BTA_AG_RFC_CLOSE_EVT, data);
}
}
/*******************************************************************************
*
* Function bta_ag_rfc_do_close
*
* Description Close RFCOMM connection.
*
*
* Returns void
*
******************************************************************************/
void bta_ag_rfc_do_close(tBTA_AG_SCB* p_scb,
UNUSED_ATTR const tBTA_AG_DATA& data) {
if (p_scb->conn_handle) {
RFCOMM_RemoveConnection(p_scb->conn_handle);
} else {
/* Close API was called while AG is in Opening state. */
/* Need to trigger the state machine to send callback to the app */
/* and move back to INIT state. */
do_in_main_thread(
FROM_HERE,
base::Bind(&bta_ag_sm_execute_by_handle, bta_ag_scb_to_idx(p_scb),
BTA_AG_RFC_CLOSE_EVT, tBTA_AG_DATA::kEmpty));
/* Cancel SDP if it had been started. */
/*
if(p_scb->p_disc_db)
{
(void)SDP_CancelServiceSearch (p_scb->p_disc_db);
}
*/
}
}