зеркало из https://github.com/mozilla/gecko-dev.git
426 строки
12 KiB
C++
426 строки
12 KiB
C++
/* -*- 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 D-Bus compatibility layer for
|
|
* Android's Bluetooth implementation, this file is licensed under the
|
|
* Apache License instead of MPL.
|
|
*/
|
|
|
|
#include "BluetoothUnixSocketConnector.h"
|
|
#include <bluetooth/l2cap.h>
|
|
#include <bluetooth/rfcomm.h>
|
|
#include <bluetooth/sco.h>
|
|
#include <errno.h>
|
|
#include <fcntl.h>
|
|
#include <stdlib.h>
|
|
#include <sys/socket.h>
|
|
#include <unistd.h>
|
|
#include "nsThreadUtils.h" // For NS_IsMainThread.
|
|
|
|
using namespace mozilla::ipc;
|
|
|
|
BEGIN_BLUETOOTH_NAMESPACE
|
|
|
|
static const int RFCOMM_SO_SNDBUF = 70 * 1024; // 70 KB send buffer
|
|
static const int L2CAP_SO_SNDBUF = 400 * 1024; // 400 KB send buffer
|
|
static const int L2CAP_SO_RCVBUF = 400 * 1024; // 400 KB receive buffer
|
|
static const int L2CAP_MAX_MTU = 65000;
|
|
|
|
BluetoothUnixSocketConnector::BluetoothUnixSocketConnector(
|
|
const nsACString& aAddressString,
|
|
BluetoothSocketType aType,
|
|
int aChannel,
|
|
bool aAuth,
|
|
bool aEncrypt)
|
|
: mAddressString(aAddressString)
|
|
, mType(aType)
|
|
, mChannel(aChannel)
|
|
, mAuth(aAuth)
|
|
, mEncrypt(aEncrypt)
|
|
{ }
|
|
|
|
BluetoothUnixSocketConnector::~BluetoothUnixSocketConnector()
|
|
{ }
|
|
|
|
nsresult
|
|
BluetoothUnixSocketConnector::CreateSocket(int& aFd) const
|
|
{
|
|
static const int sType[] = {
|
|
[0] = 0,
|
|
[BluetoothSocketType::RFCOMM] = SOCK_STREAM,
|
|
[BluetoothSocketType::SCO] = SOCK_SEQPACKET,
|
|
[BluetoothSocketType::L2CAP] = SOCK_SEQPACKET,
|
|
[BluetoothSocketType::EL2CAP] = SOCK_STREAM
|
|
};
|
|
static const int sProtocol[] = {
|
|
[0] = 0,
|
|
[BluetoothSocketType::RFCOMM] = BTPROTO_RFCOMM,
|
|
[BluetoothSocketType::SCO] = BTPROTO_SCO,
|
|
[BluetoothSocketType::L2CAP] = BTPROTO_L2CAP,
|
|
[BluetoothSocketType::EL2CAP] = BTPROTO_L2CAP
|
|
};
|
|
|
|
MOZ_ASSERT(mType < MOZ_ARRAY_LENGTH(sType));
|
|
MOZ_ASSERT(mType < MOZ_ARRAY_LENGTH(sProtocol));
|
|
|
|
BT_LOGR("mType=%d, sType=%d sProtocol=%d",
|
|
static_cast<int>(mType), sType[mType], sProtocol[mType]);
|
|
|
|
aFd = socket(AF_BLUETOOTH, sType[mType], sProtocol[mType]);
|
|
if (aFd < 0) {
|
|
BT_LOGR("Could not open Bluetooth socket: %d(%s)",
|
|
errno, strerror(errno));
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
BluetoothUnixSocketConnector::SetSocketFlags(int aFd) const
|
|
{
|
|
static const int sReuseAddress = 1;
|
|
|
|
// Set close-on-exec bit.
|
|
int flags = TEMP_FAILURE_RETRY(fcntl(aFd, F_GETFD));
|
|
if (flags < 0) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
flags |= FD_CLOEXEC;
|
|
int res = TEMP_FAILURE_RETRY(fcntl(aFd, F_SETFD, flags));
|
|
if (res < 0) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Set non-blocking status flag.
|
|
flags = TEMP_FAILURE_RETRY(fcntl(aFd, F_GETFL));
|
|
if (flags < 0) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
flags |= O_NONBLOCK;
|
|
res = TEMP_FAILURE_RETRY(fcntl(aFd, F_SETFL, flags));
|
|
if (res < 0) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
// Set socket addr to be reused even if kernel is still waiting to close.
|
|
res = setsockopt(aFd, SOL_SOCKET, SO_REUSEADDR, &sReuseAddress,
|
|
sizeof(sReuseAddress));
|
|
if (res < 0) {
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
int lm;
|
|
|
|
switch (mType) {
|
|
case BluetoothSocketType::RFCOMM:
|
|
lm |= mAuth ? RFCOMM_LM_AUTH : 0;
|
|
lm |= mEncrypt ? RFCOMM_LM_ENCRYPT : 0;
|
|
break;
|
|
case BluetoothSocketType::L2CAP:
|
|
case BluetoothSocketType::EL2CAP:
|
|
lm |= mAuth ? L2CAP_LM_AUTH : 0;
|
|
lm |= mEncrypt ? L2CAP_LM_ENCRYPT : 0;
|
|
break;
|
|
default:
|
|
// kernel does not yet support LM for SCO
|
|
lm = 0;
|
|
break;
|
|
}
|
|
|
|
if (lm) {
|
|
static const int sLevel[] = {
|
|
[0] = 0,
|
|
[BluetoothSocketType::RFCOMM] = SOL_RFCOMM,
|
|
[BluetoothSocketType::SCO] = 0,
|
|
[BluetoothSocketType::L2CAP] = SOL_L2CAP,
|
|
[BluetoothSocketType::EL2CAP] = SOL_L2CAP
|
|
};
|
|
static const int sOptname[] = {
|
|
[0] = 0,
|
|
[BluetoothSocketType::RFCOMM] = RFCOMM_LM,
|
|
[BluetoothSocketType::SCO] = 0,
|
|
[BluetoothSocketType::L2CAP] = L2CAP_LM,
|
|
[BluetoothSocketType::EL2CAP] = L2CAP_LM
|
|
};
|
|
|
|
MOZ_ASSERT(mType < MOZ_ARRAY_LENGTH(sLevel));
|
|
MOZ_ASSERT(mType < MOZ_ARRAY_LENGTH(sOptname));
|
|
|
|
if (setsockopt(aFd, sLevel[mType], sOptname[mType], &lm, sizeof(lm)) < 0) {
|
|
BT_LOGR("setsockopt(RFCOMM_LM) failed, throwing");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
if (mType == BluetoothSocketType::RFCOMM) {
|
|
|
|
/* Setting RFCOMM socket options */
|
|
|
|
int sndbuf = RFCOMM_SO_SNDBUF;
|
|
if (setsockopt(aFd, SOL_SOCKET, SO_SNDBUF, &sndbuf, sizeof(sndbuf))) {
|
|
BT_WARNING("setsockopt(SO_SNDBUF) failed, throwing");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
|
|
if (mType == BluetoothSocketType::L2CAP ||
|
|
mType == BluetoothSocketType::EL2CAP) {
|
|
|
|
/* Setting L2CAP/EL2CAP socket options */
|
|
|
|
struct l2cap_options opts;
|
|
socklen_t optlen = sizeof(opts);
|
|
int res = getsockopt(aFd, SOL_L2CAP, L2CAP_OPTIONS, &opts, &optlen);
|
|
if (!res) {
|
|
/* setting MTU for [E]L2CAP */
|
|
opts.omtu = opts.imtu = L2CAP_MAX_MTU;
|
|
|
|
/* Enable ERTM for [E]L2CAP */
|
|
if (mType == BluetoothSocketType::EL2CAP) {
|
|
opts.flush_to = 0xffff; /* infinite */
|
|
opts.mode = L2CAP_MODE_ERTM;
|
|
opts.fcs = 1;
|
|
opts.txwin_size = 64;
|
|
opts.max_tx = 10;
|
|
}
|
|
|
|
setsockopt(aFd, SOL_L2CAP, L2CAP_OPTIONS, &opts, optlen);
|
|
}
|
|
|
|
if (mType == BluetoothSocketType::EL2CAP) {
|
|
|
|
/* Set larger SNDBUF and RCVBUF for EL2CAP connections */
|
|
|
|
int sndbuf = L2CAP_SO_SNDBUF;
|
|
if (setsockopt(aFd, SOL_SOCKET, SO_SNDBUF, &sndbuf, sizeof(sndbuf)) < 0) {
|
|
BT_LOGR("setsockopt(SO_SNDBUF) failed, throwing");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
|
|
int rcvbuf = L2CAP_SO_RCVBUF;
|
|
if (setsockopt(aFd, SOL_SOCKET, SO_RCVBUF, &rcvbuf, sizeof(rcvbuf)) < 0) {
|
|
BT_LOGR("setsockopt(SO_RCVBUF) failed, throwing");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
}
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
BluetoothUnixSocketConnector::CreateAddress(struct sockaddr& aAddress,
|
|
socklen_t& aAddressLength) const
|
|
{
|
|
switch (mType) {
|
|
case BluetoothSocketType::RFCOMM: {
|
|
struct sockaddr_rc* rc =
|
|
reinterpret_cast<struct sockaddr_rc*>(&aAddress);
|
|
rc->rc_family = AF_BLUETOOTH;
|
|
nsresult rv = ConvertAddressString(mAddressString.get(),
|
|
rc->rc_bdaddr);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
rc->rc_channel = mChannel;
|
|
aAddressLength = sizeof(*rc);
|
|
}
|
|
break;
|
|
case BluetoothSocketType::L2CAP:
|
|
case BluetoothSocketType::EL2CAP: {
|
|
struct sockaddr_l2* l2 =
|
|
reinterpret_cast<struct sockaddr_l2*>(&aAddress);
|
|
l2->l2_family = AF_BLUETOOTH;
|
|
l2->l2_psm = mChannel;
|
|
nsresult rv = ConvertAddressString(mAddressString.get(),
|
|
l2->l2_bdaddr);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
l2->l2_cid = 0;
|
|
aAddressLength = sizeof(*l2);
|
|
}
|
|
break;
|
|
case BluetoothSocketType::SCO: {
|
|
struct sockaddr_sco* sco =
|
|
reinterpret_cast<struct sockaddr_sco*>(&aAddress);
|
|
sco->sco_family = AF_BLUETOOTH;
|
|
nsresult rv = ConvertAddressString(mAddressString.get(),
|
|
sco->sco_bdaddr);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
sco->sco_pkt_type = 0;
|
|
aAddressLength = sizeof(*sco);
|
|
}
|
|
break;
|
|
default:
|
|
MOZ_CRASH("Socket type unknown!");
|
|
return NS_ERROR_ABORT;
|
|
}
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
BluetoothUnixSocketConnector::ConvertAddressString(const char* aAddressString,
|
|
bdaddr_t& aAddress)
|
|
{
|
|
char* d = reinterpret_cast<char*>(aAddress.b) + 5;
|
|
|
|
for (size_t i = 0; i < MOZ_ARRAY_LENGTH(aAddress.b); ++i) {
|
|
char* endp;
|
|
*d-- = strtoul(aAddressString, &endp, 16);
|
|
MOZ_ASSERT(!(*endp != ':' && i != 5));
|
|
aAddressString = endp + 1;
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
// |UnixSocketConnector|
|
|
|
|
nsresult
|
|
BluetoothUnixSocketConnector::ConvertAddressToString(
|
|
const struct sockaddr& aAddress, socklen_t aAddressLength,
|
|
nsACString& aAddressString)
|
|
{
|
|
MOZ_ASSERT(aAddress.sa_family == AF_BLUETOOTH);
|
|
|
|
const uint8_t* b;
|
|
|
|
switch (mType) {
|
|
case BluetoothSocketType::RFCOMM: {
|
|
const struct sockaddr_rc* rc =
|
|
reinterpret_cast<const struct sockaddr_rc*>(&aAddress);
|
|
b = rc->rc_bdaddr.b;
|
|
}
|
|
break;
|
|
case BluetoothSocketType::SCO: {
|
|
const struct sockaddr_sco* sco =
|
|
reinterpret_cast<const struct sockaddr_sco*>(&aAddress);
|
|
b = sco->sco_bdaddr.b;
|
|
}
|
|
break;
|
|
case BluetoothSocketType::L2CAP:
|
|
case BluetoothSocketType::EL2CAP: {
|
|
const struct sockaddr_l2* l2 =
|
|
reinterpret_cast<const struct sockaddr_l2*>(&aAddress);
|
|
b = l2->l2_bdaddr.b;
|
|
}
|
|
break;
|
|
default:
|
|
BT_LOGR("Unknown socket type %d", static_cast<int>(mType));
|
|
return NS_ERROR_ILLEGAL_VALUE;
|
|
}
|
|
|
|
char str[32];
|
|
snprintf(str, sizeof(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]);
|
|
|
|
aAddressString.Assign(str);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
BluetoothUnixSocketConnector::CreateListenSocket(struct sockaddr* aAddress,
|
|
socklen_t* aAddressLength,
|
|
int& aListenFd)
|
|
{
|
|
ScopedClose fd;
|
|
|
|
nsresult rv = CreateSocket(fd.rwget());
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
rv = SetSocketFlags(fd);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
if (aAddress && aAddressLength) {
|
|
rv = CreateAddress(*aAddress, *aAddressLength);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
aListenFd = fd.forget();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
BluetoothUnixSocketConnector::AcceptStreamSocket(int aListenFd,
|
|
struct sockaddr* aAddress,
|
|
socklen_t* aAddressLength,
|
|
int& aStreamFd)
|
|
{
|
|
ScopedClose fd(
|
|
TEMP_FAILURE_RETRY(accept(aListenFd, aAddress, aAddressLength)));
|
|
if (fd < 0) {
|
|
NS_WARNING("Cannot accept file descriptor!");
|
|
return NS_ERROR_FAILURE;
|
|
}
|
|
nsresult rv = SetSocketFlags(fd);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
|
|
aStreamFd = fd.forget();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
BluetoothUnixSocketConnector::CreateStreamSocket(struct sockaddr* aAddress,
|
|
socklen_t* aAddressLength,
|
|
int& aStreamFd)
|
|
{
|
|
ScopedClose fd;
|
|
|
|
nsresult rv = CreateSocket(fd.rwget());
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
rv = SetSocketFlags(fd);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
if (aAddress && aAddressLength) {
|
|
rv = CreateAddress(*aAddress, *aAddressLength);
|
|
if (NS_FAILED(rv)) {
|
|
return rv;
|
|
}
|
|
}
|
|
|
|
aStreamFd = fd.forget();
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
nsresult
|
|
BluetoothUnixSocketConnector::Duplicate(UnixSocketConnector*& aConnector)
|
|
{
|
|
aConnector = new BluetoothUnixSocketConnector(*this);
|
|
|
|
return NS_OK;
|
|
}
|
|
|
|
END_BLUETOOTH_NAMESPACE
|