gecko-dev/ipc/nfc/Nfc.cpp
2014-02-19 15:14:22 +08:00

237 lines
5.3 KiB
C++

/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
/* vim: set sw=4 ts=8 et ft=cpp: */
/* 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/. */
/* Copyright © 2013, Deutsche Telekom, Inc. */
#include "mozilla/ipc/Nfc.h"
#include <fcntl.h>
#include <sys/socket.h>
#include <sys/un.h>
#undef CHROMIUM_LOG
#if (defined(MOZ_WIDGET_GONK) && defined(DEBUG))
#include <android/log.h>
#define CHROMIUM_LOG(args...) __android_log_print(ANDROID_LOG_INFO, "Gonk", args)
#else
#define CHROMIUM_LOG(args...)
#endif
#include "jsfriendapi.h"
#include "mozilla/ArrayUtils.h"
#include "nsThreadUtils.h" // For NS_IsMainThread.
using namespace mozilla::ipc;
namespace {
const char* NFC_SOCKET_NAME = "/dev/socket/nfcd";
// Network port to connect to for adb forwarded sockets when doing
// desktop development.
const uint32_t NFC_TEST_PORT = 6400;
class SendNfcSocketDataTask : public nsRunnable
{
public:
SendNfcSocketDataTask(NfcConsumer* aConsumer, UnixSocketRawData* aRawData)
: mConsumer(aConsumer), mRawData(aRawData)
{ }
NS_IMETHOD Run()
{
MOZ_ASSERT(NS_IsMainThread());
if (!mConsumer ||
mConsumer->GetConnectionStatus() != SOCKET_CONNECTED) {
// Probably shuting down.
delete mRawData;
return NS_OK;
}
mConsumer->SendSocketData(mRawData);
return NS_OK;
}
private:
NfcConsumer* mConsumer;
UnixSocketRawData* mRawData;
};
class NfcConnector : public mozilla::ipc::UnixSocketConnector
{
public:
NfcConnector()
{}
virtual ~NfcConnector()
{}
virtual int Create();
virtual bool CreateAddr(bool aIsServer,
socklen_t& aAddrSize,
sockaddr_any& aAddr,
const char* aAddress);
virtual bool SetUp(int aFd);
virtual bool SetUpListenSocket(int aFd);
virtual void GetSocketAddr(const sockaddr_any& aAddr,
nsAString& aAddrStr);
};
int
NfcConnector::Create()
{
MOZ_ASSERT(!NS_IsMainThread());
int fd = -1;
#if defined(MOZ_WIDGET_GONK)
fd = socket(AF_LOCAL, SOCK_STREAM, 0);
#else
// If we can't hit a local loopback, fail later in connect.
fd = socket(AF_INET, SOCK_STREAM, 0);
#endif
if (fd < 0) {
NS_WARNING("Could not open nfc socket!");
return -1;
}
if (!SetUp(fd)) {
NS_WARNING("Could not set up socket!");
}
return fd;
}
bool
NfcConnector::CreateAddr(bool aIsServer,
socklen_t& aAddrSize,
sockaddr_any& aAddr,
const char* aAddress)
{
// We never open nfc socket as server.
MOZ_ASSERT(!aIsServer);
uint32_t af;
#if defined(MOZ_WIDGET_GONK)
af = AF_LOCAL;
#else
af = AF_INET;
#endif
switch (af) {
case AF_LOCAL:
aAddr.un.sun_family = af;
if(strlen(aAddress) > sizeof(aAddr.un.sun_path)) {
NS_WARNING("Address too long for socket struct!");
return false;
}
strcpy((char*)&aAddr.un.sun_path, aAddress);
aAddrSize = strlen(aAddress) + offsetof(struct sockaddr_un, sun_path) + 1;
break;
case AF_INET:
aAddr.in.sin_family = af;
aAddr.in.sin_port = htons(NFC_TEST_PORT);
aAddr.in.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
aAddrSize = sizeof(sockaddr_in);
break;
default:
NS_WARNING("Socket type not handled by connector!");
return false;
}
return true;
}
bool
NfcConnector::SetUp(int aFd)
{
// Nothing to do here.
return true;
}
bool
NfcConnector::SetUpListenSocket(int aFd)
{
// Nothing to do here.
return true;
}
void
NfcConnector::GetSocketAddr(const sockaddr_any& aAddr,
nsAString& aAddrStr)
{
MOZ_CRASH("This should never be called!");
}
} // anonymous namespace
namespace mozilla {
namespace ipc {
NfcConsumer::NfcConsumer(NfcSocketListener* aListener)
: mListener(aListener)
, mShutdown(false)
{
mAddress = NFC_SOCKET_NAME;
ConnectSocket(new NfcConnector(), mAddress.get());
}
void
NfcConsumer::Shutdown()
{
MOZ_ASSERT(NS_IsMainThread());
mShutdown = true;
CloseSocket();
}
bool
NfcConsumer::PostToNfcDaemon(const uint8_t* aData, size_t aSize)
{
MOZ_ASSERT(!NS_IsMainThread());
UnixSocketRawData* raw = new UnixSocketRawData(aData, aSize);
nsRefPtr<SendNfcSocketDataTask> task = new SendNfcSocketDataTask(this, raw);
NS_DispatchToMainThread(task);
return true;
}
void
NfcConsumer::ReceiveSocketData(nsAutoPtr<UnixSocketRawData>& aData)
{
MOZ_ASSERT(NS_IsMainThread());
if (mListener) {
mListener->ReceiveSocketData(aData);
}
}
void
NfcConsumer::OnConnectSuccess()
{
// Nothing to do here.
CHROMIUM_LOG("NFC: %s\n", __FUNCTION__);
}
void
NfcConsumer::OnConnectError()
{
CHROMIUM_LOG("NFC: %s\n", __FUNCTION__);
CloseSocket();
}
void
NfcConsumer::OnDisconnect()
{
CHROMIUM_LOG("NFC: %s\n", __FUNCTION__);
if (!mShutdown) {
ConnectSocket(new NfcConnector(), mAddress.get(),
GetSuggestedConnectDelayMs());
}
}
} // namespace ipc
} // namespace mozilla