tenfourfox/dom/bluetooth/bluedroid/BluetoothDaemonSocketInterface.cpp
Cameron Kaiser c9b2922b70 hello FPR
2017-04-19 00:56:45 -07:00

387 lines
11 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this file,
* You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "BluetoothDaemonSocketInterface.h"
#include "BluetoothSocketMessageWatcher.h"
#include "nsXULAppAPI.h"
#include "mozilla/unused.h"
BEGIN_BLUETOOTH_NAMESPACE
using namespace mozilla::ipc;
//
// Socket module
//
const int BluetoothDaemonSocketModule::MAX_NUM_CLIENTS = 1;
// Commands
//
nsresult
BluetoothDaemonSocketModule::ListenCmd(BluetoothSocketType aType,
const BluetoothServiceName& aServiceName,
const BluetoothUuid& aServiceUuid,
int aChannel, bool aEncrypt,
bool aAuth,
BluetoothSocketResultHandler* aRes)
{
MOZ_ASSERT(NS_IsMainThread());
nsAutoPtr<DaemonSocketPDU> pdu(
new DaemonSocketPDU(SERVICE_ID, OPCODE_LISTEN,
0));
nsresult rv = PackPDU(
aType,
aServiceName,
aServiceUuid,
PackConversion<int, int32_t>(aChannel),
SocketFlags(aEncrypt, aAuth), *pdu);
if (NS_FAILED(rv)) {
return rv;
}
rv = Send(pdu, aRes);
if (NS_FAILED(rv)) {
return rv;
}
Unused << pdu.forget();
return rv;
}
nsresult
BluetoothDaemonSocketModule::ConnectCmd(const BluetoothAddress& aBdAddr,
BluetoothSocketType aType,
const BluetoothUuid& aServiceUuid,
int aChannel, bool aEncrypt,
bool aAuth,
BluetoothSocketResultHandler* aRes)
{
MOZ_ASSERT(NS_IsMainThread());
nsAutoPtr<DaemonSocketPDU> pdu(
new DaemonSocketPDU(SERVICE_ID, OPCODE_CONNECT,
0));
nsresult rv = PackPDU(
aBdAddr,
aType,
aServiceUuid,
PackConversion<int, int32_t>(aChannel),
SocketFlags(aEncrypt, aAuth), *pdu);
if (NS_FAILED(rv)) {
return rv;
}
rv = Send(pdu, aRes);
if (NS_FAILED(rv)) {
return rv;
}
Unused << pdu.forget();
return rv;
}
/* |DeleteTask| deletes a class instance on the I/O thread
*/
template <typename T>
class DeleteTask final : public Task
{
public:
DeleteTask(T* aPtr)
: mPtr(aPtr)
{ }
void Run() override
{
mPtr = nullptr;
}
private:
nsAutoPtr<T> mPtr;
};
/* |AcceptWatcher| specializes SocketMessageWatcher for Accept
* operations by reading the socket messages from Bluedroid and
* forwarding the received client socket to the resource handler.
* The first message is received immediately. When there's a new
* connection, Bluedroid sends the 2nd message with the socket
* info and socket file descriptor.
*/
class BluetoothDaemonSocketModule::AcceptWatcher final
: public SocketMessageWatcher
{
public:
AcceptWatcher(int aFd, BluetoothSocketResultHandler* aRes)
: SocketMessageWatcher(aFd, aRes)
{ }
void Proceed(BluetoothStatus aStatus) override
{
if (aStatus == STATUS_SUCCESS) {
AcceptResultRunnable::Dispatch(
GetResultHandler(), &BluetoothSocketResultHandler::Accept,
ConstantInitOp3<int, BluetoothAddress, int>(GetClientFd(),
GetBdAddress(),
GetConnectionStatus()));
} else {
ErrorRunnable::Dispatch(GetResultHandler(),
&BluetoothSocketResultHandler::OnError,
ConstantInitOp1<BluetoothStatus>(aStatus));
}
MessageLoopForIO::current()->PostTask(
FROM_HERE, new DeleteTask<AcceptWatcher>(this));
}
};
nsresult
BluetoothDaemonSocketModule::AcceptCmd(int aFd,
BluetoothSocketResultHandler* aRes)
{
MOZ_ASSERT(NS_IsMainThread());
/* receive Bluedroid's socket-setup messages and client fd */
Task* t = new SocketMessageWatcherTask(new AcceptWatcher(aFd, aRes));
XRE_GetIOMessageLoop()->PostTask(FROM_HERE, t);
return NS_OK;
}
nsresult
BluetoothDaemonSocketModule::CloseCmd(BluetoothSocketResultHandler* aRes)
{
MOZ_ASSERT(NS_IsMainThread());
/* stop the watcher corresponding to |aRes| */
Task* t = new DeleteSocketMessageWatcherTask(aRes);
XRE_GetIOMessageLoop()->PostTask(FROM_HERE, t);
return NS_OK;
}
void
BluetoothDaemonSocketModule::HandleSvc(const DaemonSocketPDUHeader& aHeader,
DaemonSocketPDU& aPDU,
DaemonSocketResultHandler* aRes)
{
static void (BluetoothDaemonSocketModule::* const HandleRsp[])(
const DaemonSocketPDUHeader&,
DaemonSocketPDU&,
BluetoothSocketResultHandler*) = {
[OPCODE_ERROR] = &BluetoothDaemonSocketModule::ErrorRsp,
[OPCODE_LISTEN] = &BluetoothDaemonSocketModule::ListenRsp,
[OPCODE_CONNECT] = &BluetoothDaemonSocketModule::ConnectRsp
};
if (NS_WARN_IF(MOZ_ARRAY_LENGTH(HandleRsp) <= aHeader.mOpcode) ||
NS_WARN_IF(!HandleRsp[aHeader.mOpcode])) {
return;
}
RefPtr<BluetoothSocketResultHandler> res =
static_cast<BluetoothSocketResultHandler*>(aRes);
if (!res) {
return; // Return early if no result handler has been set
}
(this->*(HandleRsp[aHeader.mOpcode]))(aHeader, aPDU, res);
}
uint8_t
BluetoothDaemonSocketModule::SocketFlags(bool aEncrypt, bool aAuth)
{
return (0x01 * aEncrypt) | (0x02 * aAuth);
}
// Responses
//
void
BluetoothDaemonSocketModule::ErrorRsp(const DaemonSocketPDUHeader& aHeader,
DaemonSocketPDU& aPDU,
BluetoothSocketResultHandler* aRes)
{
ErrorRunnable::Dispatch(
aRes, &BluetoothSocketResultHandler::OnError, UnpackPDUInitOp(aPDU));
}
class BluetoothDaemonSocketModule::ListenInitOp final : private PDUInitOp
{
public:
ListenInitOp(DaemonSocketPDU& aPDU)
: PDUInitOp(aPDU)
{ }
nsresult
operator () (int& aArg1) const
{
DaemonSocketPDU& pdu = GetPDU();
aArg1 = pdu.AcquireFd();
if (NS_WARN_IF(aArg1 < 0)) {
return NS_ERROR_ILLEGAL_VALUE;
}
WarnAboutTrailingData();
return NS_OK;
}
};
void
BluetoothDaemonSocketModule::ListenRsp(const DaemonSocketPDUHeader& aHeader,
DaemonSocketPDU& aPDU,
BluetoothSocketResultHandler* aRes)
{
ListenResultRunnable::Dispatch(
aRes, &BluetoothSocketResultHandler::Listen, ListenInitOp(aPDU));
}
/* |ConnectWatcher| specializes SocketMessageWatcher for
* connect operations by reading the socket messages from
* Bluedroid and forwarding the connected socket to the
* resource handler.
*/
class BluetoothDaemonSocketModule::ConnectWatcher final
: public SocketMessageWatcher
{
public:
ConnectWatcher(int aFd, BluetoothSocketResultHandler* aRes)
: SocketMessageWatcher(aFd, aRes)
{ }
void Proceed(BluetoothStatus aStatus) override
{
if (aStatus == STATUS_SUCCESS) {
ConnectResultRunnable::Dispatch(
GetResultHandler(), &BluetoothSocketResultHandler::Connect,
ConstantInitOp3<int, BluetoothAddress, int>(GetFd(),
GetBdAddress(),
GetConnectionStatus()));
} else {
ErrorRunnable::Dispatch(GetResultHandler(),
&BluetoothSocketResultHandler::OnError,
ConstantInitOp1<BluetoothStatus>(aStatus));
}
MessageLoopForIO::current()->PostTask(
FROM_HERE, new DeleteTask<ConnectWatcher>(this));
}
};
void
BluetoothDaemonSocketModule::ConnectRsp(const DaemonSocketPDUHeader& aHeader,
DaemonSocketPDU& aPDU,
BluetoothSocketResultHandler* aRes)
{
/* the file descriptor is attached in the PDU's ancillary data */
int fd = aPDU.AcquireFd();
if (fd < 0) {
ErrorRunnable::Dispatch(aRes, &BluetoothSocketResultHandler::OnError,
ConstantInitOp1<BluetoothStatus>(STATUS_FAIL));
return;
}
/* receive Bluedroid's socket-setup messages */
Task* t = new SocketMessageWatcherTask(new ConnectWatcher(fd, aRes));
XRE_GetIOMessageLoop()->PostTask(FROM_HERE, t);
}
//
// Socket interface
//
BluetoothDaemonSocketInterface::BluetoothDaemonSocketInterface(
BluetoothDaemonSocketModule* aModule)
: mModule(aModule)
{
MOZ_ASSERT(mModule);
}
BluetoothDaemonSocketInterface::~BluetoothDaemonSocketInterface()
{ }
void
BluetoothDaemonSocketInterface::Listen(BluetoothSocketType aType,
const BluetoothServiceName& aServiceName,
const BluetoothUuid& aServiceUuid,
int aChannel, bool aEncrypt,
bool aAuth,
BluetoothSocketResultHandler* aRes)
{
MOZ_ASSERT(mModule);
nsresult rv = mModule->ListenCmd(aType, aServiceName, aServiceUuid,
aChannel, aEncrypt, aAuth, aRes);
if (NS_FAILED(rv)) {
DispatchError(aRes, rv);
}
}
void
BluetoothDaemonSocketInterface::Connect(const BluetoothAddress& aBdAddr,
BluetoothSocketType aType,
const BluetoothUuid& aServiceUuid,
int aChannel, bool aEncrypt,
bool aAuth,
BluetoothSocketResultHandler* aRes)
{
MOZ_ASSERT(mModule);
nsresult rv = mModule->ConnectCmd(aBdAddr, aType, aServiceUuid, aChannel,
aEncrypt, aAuth, aRes);
if (NS_FAILED(rv)) {
DispatchError(aRes, rv);
}
}
void
BluetoothDaemonSocketInterface::Accept(int aFd,
BluetoothSocketResultHandler* aRes)
{
MOZ_ASSERT(mModule);
nsresult rv = mModule->AcceptCmd(aFd, aRes);
if (NS_FAILED(rv)) {
DispatchError(aRes, rv);
}
}
void
BluetoothDaemonSocketInterface::Close(BluetoothSocketResultHandler* aRes)
{
MOZ_ASSERT(mModule);
nsresult rv = mModule->CloseCmd(aRes);
if (NS_FAILED(rv)) {
DispatchError(aRes, rv);
}
}
void
BluetoothDaemonSocketInterface::DispatchError(
BluetoothSocketResultHandler* aRes, BluetoothStatus aStatus)
{
DaemonResultRunnable1<BluetoothSocketResultHandler, void,
BluetoothStatus, BluetoothStatus>::Dispatch(
aRes, &BluetoothSocketResultHandler::OnError,
ConstantInitOp1<BluetoothStatus>(aStatus));
}
void
BluetoothDaemonSocketInterface::DispatchError(
BluetoothSocketResultHandler* aRes, nsresult aRv)
{
BluetoothStatus status;
if (NS_WARN_IF(NS_FAILED(Convert(aRv, status)))) {
status = STATUS_FAIL;
}
DispatchError(aRes, status);
}
END_BLUETOOTH_NAMESPACE