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BluetoothUnixSocketConnector.cpp
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BluetoothUnixSocketConnector.cpp
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/* -*- Mode: c++; c-basic-offset: 2; indent-tabs-mode: nil; tab-width: 40 -*- */
/* vim: set ts=2 et sw=2 tw=80: */
/*
* Copyright 2009, The Android Open Source Project
*
* 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.
*
* NOTE: Due to being based on the dbus compatibility layer for
* android's bluetooth implementation, this file is licensed under the
* apache license instead of MPL.
*
*/
#include <fcntl.h>
#include <unistd.h>
#include <stdlib.h>
#include <errno.h>
#include <sys/socket.h>
#include <bluetooth/bluetooth.h>
#include <bluetooth/sco.h>
#include <bluetooth/rfcomm.h>
#include <bluetooth/l2cap.h>
#include "BluetoothUnixSocketConnector.h"
#include "nsThreadUtils.h"
#undef LOG
#if defined(MOZ_WIDGET_GONK)
#include <android/log.h>
#define LOG(args...) __android_log_print(ANDROID_LOG_INFO, "GonkDBus", args);
#else
#define BTDEBUG true
#define LOG(args...) if (BTDEBUG) printf(args);
#endif
USING_BLUETOOTH_NAMESPACE
static const int RFCOMM_SO_SNDBUF = 70 * 1024; // 70 KB send buffer
static
int get_bdaddr(const char *str, bdaddr_t *ba)
{
char *d = ((char*)ba) + 5, *endp;
for (int i = 0; i < 6; i++) {
*d-- = strtol(str, &endp, 16);
MOZ_ASSERT(!(*endp != ':' && i != 5));
str = endp + 1;
}
return 0;
}
static
void get_bdaddr_as_string(const bdaddr_t *ba, char *str) {
const uint8_t *b = (const uint8_t *)ba;
sprintf(str, "%2.2X:%2.2X:%2.2X:%2.2X:%2.2X:%2.2X",
b[5], b[4], b[3], b[2], b[1], b[0]);
}
BluetoothUnixSocketConnector::BluetoothUnixSocketConnector(
BluetoothSocketType aType,
int aChannel,
bool aAuth,
bool aEncrypt) : mType(aType)
, mChannel(aChannel)
, mAuth(aAuth)
, mEncrypt(aEncrypt)
{
}
bool
BluetoothUnixSocketConnector::SetUp(int aFd)
{
int lm = 0;
int sndbuf;
/* kernel does not yet support LM for SCO */
switch (mType) {
case BluetoothSocketType::RFCOMM:
lm |= mAuth ? RFCOMM_LM_AUTH : 0;
lm |= mEncrypt ? RFCOMM_LM_ENCRYPT : 0;
break;
case BluetoothSocketType::L2CAP:
lm |= mAuth ? L2CAP_LM_AUTH : 0;
lm |= mEncrypt ? L2CAP_LM_ENCRYPT : 0;
break;
}
if (lm) {
if (setsockopt(aFd, SOL_RFCOMM, RFCOMM_LM, &lm, sizeof(lm))) {
NS_WARNING("setsockopt(RFCOMM_LM) failed, throwing");
return false;
}
}
if (mType == BluetoothSocketType::RFCOMM) {
sndbuf = RFCOMM_SO_SNDBUF;
if (setsockopt(aFd, SOL_SOCKET, SO_SNDBUF, &sndbuf, sizeof(sndbuf))) {
NS_WARNING("setsockopt(SO_SNDBUF) failed, throwing");
return false;
}
}
return true;
}
int
BluetoothUnixSocketConnector::Create()
{
MOZ_ASSERT(!NS_IsMainThread());
int fd = -1;
switch (mType) {
case BluetoothSocketType::RFCOMM:
fd = socket(PF_BLUETOOTH, SOCK_STREAM, BTPROTO_RFCOMM);
break;
case BluetoothSocketType::SCO:
fd = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_SCO);
break;
case BluetoothSocketType::L2CAP:
fd = socket(PF_BLUETOOTH, SOCK_SEQPACKET, BTPROTO_L2CAP);
break;
default:
MOZ_NOT_REACHED();
}
if (fd < 0) {
NS_WARNING("Could not open bluetooth socket!");
return -1;
}
if (!SetUp(fd)) {
NS_WARNING("Could not set up socket!");
}
return fd;
}
void
BluetoothUnixSocketConnector::CreateAddr(bool aIsServer,
socklen_t& aAddrSize,
struct sockaddr* aAddr,
const char* aAddress)
{
// Set to BDADDR_ANY, if it's not a server, we'll reset.
bdaddr_t bd_address_obj = {{0, 0, 0, 0, 0, 0}};
if (!aIsServer && aAddress && strlen(aAddress) > 0) {
if (get_bdaddr(aAddress, &bd_address_obj)) {
NS_WARNING("Can't get bluetooth address!");
return;
}
}
switch (mType) {
case BluetoothSocketType::RFCOMM:
struct sockaddr_rc addr_rc;
aAddrSize = sizeof(addr_rc);
memset(aAddr, 0, aAddrSize);
addr_rc.rc_family = AF_BLUETOOTH;
addr_rc.rc_channel = mChannel;
memcpy(&addr_rc.rc_bdaddr, &bd_address_obj, sizeof(bdaddr_t));
memcpy(aAddr, &addr_rc, sizeof(addr_rc));
break;
case BluetoothSocketType::SCO:
struct sockaddr_sco addr_sco;
aAddrSize = sizeof(addr_sco);
memset(aAddr, 0, aAddrSize);
addr_sco.sco_family = AF_BLUETOOTH;
memcpy(&addr_sco.sco_bdaddr, &bd_address_obj, sizeof(bdaddr_t));
memcpy(aAddr, &addr_sco, sizeof(addr_sco));
break;
default:
NS_WARNING("Socket type unknown!");
}
}
void
BluetoothUnixSocketConnector::GetSocketAddr(const sockaddr& aAddr,
nsAString& aAddrStr)
{
char addr[18];
get_bdaddr_as_string((bdaddr_t*)aAddr.sa_data, addr);
aAddrStr.AssignASCII(addr);
}