gecko-dev/ipc/nfc/Nfc.cpp

221 lines
4.9 KiB
C++
Raw Normal View History

/* -*- 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/. */
#include <fcntl.h>
#include <limits.h>
#include <errno.h>
#include <sys/socket.h>
#include <sys/un.h>
#undef LOG
#if defined(MOZ_WIDGET_GONK)
#include <android/log.h>
#define LOG(args...) __android_log_print(ANDROID_LOG_INFO, "Gonk", args)
#else
#define LOG(args...) printf(args);
#endif
#include "jsfriendapi.h"
#include "nsThreadUtils.h" // For NS_IsMainThread.
#include "Nfc.h"
USING_WORKERS_NAMESPACE
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 NFCD_TEST_PORT = 6400;
class DispatchNfcEvent : public WorkerTask
{
public:
DispatchNfcEvent(UnixSocketRawData* aMessage)
: mMessage(aMessage)
{ }
virtual bool RunTask(JSContext *aCx);
private:
nsAutoPtr<UnixSocketRawData> mMessage;
};
bool
DispatchNfcEvent::RunTask(JSContext *aCx)
{
MOZ_ASSERT(NS_IsMainThread(), "DispatchNfcEvent on main thread");
MOZ_ASSERT(aCx);
JSObject *obj = JS::CurrentGlobalOrNull(aCx);
JSObject *array = JS_NewUint8Array(aCx, mMessage->mSize);
if (!array) {
return false;
}
memcpy(JS_GetArrayBufferViewData(array), mMessage->mData, mMessage->mSize);
jsval argv[] = { OBJECT_TO_JSVAL(array) };
return JS_CallFunctionName(aCx, obj, "onNfcMessage", NS_ARRAY_LENGTH(argv),
argv, argv);
}
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 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(NFCD_TEST_PORT);
aAddr.in.sin_addr.s_addr = htons(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;
}
void
NfcConnector::GetSocketAddr(const sockaddr_any& aAddr,
nsAString& aAddrStr)
{
MOZ_CRASH("This should never be called!");
}
} // anonymous namespace
namespace mozilla {
namespace ipc {
NfcConsumer::NfcConsumer(WorkerCrossThreadDispatcher* aDispatcher)
: mDispatcher(aDispatcher)
, mShutdown(false)
{
ConnectSocket(new NfcConnector(), NFC_SOCKET_NAME);
}
void
NfcConsumer::Shutdown()
{
mShutdown = true;
CloseSocket();
}
void
NfcConsumer::ReceiveSocketData(nsAutoPtr<UnixSocketRawData>& aMessage)
{
MOZ_ASSERT(NS_IsMainThread());
#ifdef DEBUG
LOG("ReceiveSocketData\n");
#endif
nsRefPtr<DispatchNfcEvent> dre(new DispatchNfcEvent(aMessage.forget()));
mDispatcher->PostTask(dre);
}
void
NfcConsumer::OnConnectSuccess()
{
// Nothing to do here.
LOG("Socket open for Nfc\n");
}
void
NfcConsumer::OnConnectError()
{
#ifdef DEBUG
LOG("%s\n", __FUNCTION__);
#endif
CloseSocket();
}
void
NfcConsumer::OnDisconnect()
{
#ifdef DEBUG
LOG("%s\n", __FUNCTION__);
#endif
if (!mShutdown) {
ConnectSocket(new NfcConnector(), NFC_SOCKET_NAME, 1000);
}
}
} // namespace ipc
} // namespace mozilla