michael@0: /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*- */
michael@0: /* vim: set sw=4 ts=8 et ft=cpp: */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: /* Copyright © 2013, Deutsche Telekom, Inc. */
michael@0: 
michael@0: #include "mozilla/ipc/Nfc.h"
michael@0: 
michael@0: #include <fcntl.h>
michael@0: #include <sys/socket.h>
michael@0: #include <sys/un.h>
michael@0: 
michael@0: #undef CHROMIUM_LOG
michael@0: #if (defined(MOZ_WIDGET_GONK) && defined(DEBUG))
michael@0: #include <android/log.h>
michael@0: #define CHROMIUM_LOG(args...)  __android_log_print(ANDROID_LOG_INFO, "Gonk", args)
michael@0: #else
michael@0: #define CHROMIUM_LOG(args...)
michael@0: #endif
michael@0: 
michael@0: #include "jsfriendapi.h"
michael@0: #include "mozilla/ArrayUtils.h"
michael@0: #include "nsThreadUtils.h" // For NS_IsMainThread.
michael@0: 
michael@0: USING_WORKERS_NAMESPACE
michael@0: using namespace mozilla::ipc;
michael@0: 
michael@0: namespace {
michael@0: 
michael@0: const char* NFC_SOCKET_NAME = "/dev/socket/nfcd";
michael@0: 
michael@0: // Network port to connect to for adb forwarded sockets when doing
michael@0: // desktop development.
michael@0: const uint32_t NFC_TEST_PORT = 6400;
michael@0: 
michael@0: nsRefPtr<mozilla::ipc::NfcConsumer> sNfcConsumer;
michael@0: 
michael@0: class ConnectWorkerToNFC : public WorkerTask
michael@0: {
michael@0: public:
michael@0:     ConnectWorkerToNFC()
michael@0:     { }
michael@0: 
michael@0:     virtual bool RunTask(JSContext* aCx);
michael@0: };
michael@0: 
michael@0: class SendNfcSocketDataTask : public nsRunnable
michael@0: {
michael@0: public:
michael@0:     SendNfcSocketDataTask(UnixSocketRawData* aRawData)
michael@0:         : mRawData(aRawData)
michael@0:     { }
michael@0: 
michael@0:     NS_IMETHOD Run()
michael@0:     {
michael@0:         MOZ_ASSERT(NS_IsMainThread());
michael@0: 
michael@0:         if (!sNfcConsumer ||
michael@0:             sNfcConsumer->GetConnectionStatus() != SOCKET_CONNECTED) {
michael@0:             // Probably shuting down.
michael@0:             delete mRawData;
michael@0:             return NS_OK;
michael@0:         }
michael@0: 
michael@0:         sNfcConsumer->SendSocketData(mRawData);
michael@0:         return NS_OK;
michael@0:     }
michael@0: 
michael@0: private:
michael@0:     UnixSocketRawData* mRawData;
michael@0: };
michael@0: 
michael@0: bool
michael@0: PostToNFC(JSContext* aCx,
michael@0:           unsigned aArgc,
michael@0:           JS::Value* aVp)
michael@0: {
michael@0:     JS::CallArgs args = JS::CallArgsFromVp(aArgc, aVp);
michael@0:     NS_ASSERTION(!NS_IsMainThread(), "Expecting to be on the worker thread");
michael@0: 
michael@0:     if (args.length() != 1) {
michael@0:         JS_ReportError(aCx, "Expecting one argument with the NFC message");
michael@0:         return false;
michael@0:     }
michael@0: 
michael@0:     JS::Value v = args[0];
michael@0: 
michael@0:     JSAutoByteString abs;
michael@0:     void* data;
michael@0:     size_t size;
michael@0:     if (JSVAL_IS_STRING(v)) {
michael@0:         JS::Rooted<JSString*> str(aCx, v.toString());
michael@0:         if (!abs.encodeUtf8(aCx, str)) {
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         data = abs.ptr();
michael@0:         size = abs.length();
michael@0:     } else if (!JSVAL_IS_PRIMITIVE(v)) {
michael@0:         JSObject* obj = JSVAL_TO_OBJECT(v);
michael@0:         if (!JS_IsTypedArrayObject(obj)) {
michael@0:             JS_ReportError(aCx, "Object passed in wasn't a typed array");
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         uint32_t type = JS_GetArrayBufferViewType(obj);
michael@0:         if (type != js::ArrayBufferView::TYPE_INT8 &&
michael@0:             type != js::ArrayBufferView::TYPE_UINT8 &&
michael@0:             type != js::ArrayBufferView::TYPE_UINT8_CLAMPED) {
michael@0:             JS_ReportError(aCx, "Typed array data is not octets");
michael@0:             return false;
michael@0:         }
michael@0: 
michael@0:         size = JS_GetTypedArrayByteLength(obj);
michael@0:         data = JS_GetArrayBufferViewData(obj);
michael@0:     } else {
michael@0:         JS_ReportError(aCx,
michael@0:                        "Incorrect argument. Expecting a string or a typed array");
michael@0:         return false;
michael@0:     }
michael@0: 
michael@0:     UnixSocketRawData* raw = new UnixSocketRawData(data, size);
michael@0: 
michael@0:     nsRefPtr<SendNfcSocketDataTask> task =
michael@0:         new SendNfcSocketDataTask(raw);
michael@0:     NS_DispatchToMainThread(task);
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: bool
michael@0: ConnectWorkerToNFC::RunTask(JSContext* aCx)
michael@0: {
michael@0:     // Set up the postNFCMessage on the function for worker -> NFC thread
michael@0:     // communication.
michael@0:     NS_ASSERTION(!NS_IsMainThread(), "Expecting to be on the worker thread");
michael@0:     NS_ASSERTION(!JS_IsRunning(aCx), "Are we being called somehow?");
michael@0:     JS::Rooted<JSObject*> workerGlobal(aCx, JS::CurrentGlobalOrNull(aCx));
michael@0: 
michael@0:     return !!JS_DefineFunction(aCx, workerGlobal,
michael@0:                                "postNfcMessage", PostToNFC, 1, 0);
michael@0: }
michael@0: 
michael@0: class DispatchNFCEvent : public WorkerTask
michael@0: {
michael@0: public:
michael@0:     DispatchNFCEvent(UnixSocketRawData* aMessage)
michael@0:         : mMessage(aMessage)
michael@0:     { }
michael@0: 
michael@0:     virtual bool RunTask(JSContext* aCx);
michael@0: 
michael@0: private:
michael@0:     nsAutoPtr<UnixSocketRawData> mMessage;
michael@0: };
michael@0: 
michael@0: bool
michael@0: DispatchNFCEvent::RunTask(JSContext* aCx)
michael@0: {
michael@0:     JS::Rooted<JSObject*> obj(aCx, JS::CurrentGlobalOrNull(aCx));
michael@0: 
michael@0:     JSObject* array = JS_NewUint8Array(aCx, mMessage->mSize);
michael@0:     if (!array) {
michael@0:         return false;
michael@0:     }
michael@0:     JS::Rooted<JS::Value> arrayVal(aCx, JS::ObjectValue(*array));
michael@0: 
michael@0:     memcpy(JS_GetArrayBufferViewData(array), mMessage->mData, mMessage->mSize);
michael@0:     JS::Rooted<JS::Value> rval(aCx);
michael@0:     return JS_CallFunctionName(aCx, obj, "onNfcMessage", arrayVal, &rval);
michael@0: }
michael@0: 
michael@0: class NfcConnector : public mozilla::ipc::UnixSocketConnector
michael@0: {
michael@0: public:
michael@0:     NfcConnector()
michael@0:     {}
michael@0: 
michael@0:     virtual ~NfcConnector()
michael@0:     {}
michael@0: 
michael@0:     virtual int Create();
michael@0:     virtual bool CreateAddr(bool aIsServer,
michael@0:                             socklen_t& aAddrSize,
michael@0:                             sockaddr_any& aAddr,
michael@0:                             const char* aAddress);
michael@0:     virtual bool SetUp(int aFd);
michael@0:     virtual bool SetUpListenSocket(int aFd);
michael@0:     virtual void GetSocketAddr(const sockaddr_any& aAddr,
michael@0:                                nsAString& aAddrStr);
michael@0: };
michael@0: 
michael@0: int
michael@0: NfcConnector::Create()
michael@0: {
michael@0:     MOZ_ASSERT(!NS_IsMainThread());
michael@0: 
michael@0:     int fd = -1;
michael@0: 
michael@0: #if defined(MOZ_WIDGET_GONK)
michael@0:     fd = socket(AF_LOCAL, SOCK_STREAM, 0);
michael@0: #else
michael@0:     // If we can't hit a local loopback, fail later in connect.
michael@0:     fd = socket(AF_INET, SOCK_STREAM, 0);
michael@0: #endif
michael@0: 
michael@0:     if (fd < 0) {
michael@0:         NS_WARNING("Could not open nfc socket!");
michael@0:         return -1;
michael@0:     }
michael@0: 
michael@0:     if (!SetUp(fd)) {
michael@0:         NS_WARNING("Could not set up socket!");
michael@0:     }
michael@0:     return fd;
michael@0: }
michael@0: 
michael@0: bool
michael@0: NfcConnector::CreateAddr(bool aIsServer,
michael@0:                          socklen_t& aAddrSize,
michael@0:                          sockaddr_any& aAddr,
michael@0:                          const char* aAddress)
michael@0: {
michael@0:     // We never open nfc socket as server.
michael@0:     MOZ_ASSERT(!aIsServer);
michael@0:     uint32_t af;
michael@0: #if defined(MOZ_WIDGET_GONK)
michael@0:     af = AF_LOCAL;
michael@0: #else
michael@0:     af = AF_INET;
michael@0: #endif
michael@0:     switch (af) {
michael@0:     case AF_LOCAL:
michael@0:         aAddr.un.sun_family = af;
michael@0:         if(strlen(aAddress) > sizeof(aAddr.un.sun_path)) {
michael@0:             NS_WARNING("Address too long for socket struct!");
michael@0:             return false;
michael@0:         }
michael@0:         strcpy((char*)&aAddr.un.sun_path, aAddress);
michael@0:         aAddrSize = strlen(aAddress) + offsetof(struct sockaddr_un, sun_path) + 1;
michael@0:         break;
michael@0:     case AF_INET:
michael@0:         aAddr.in.sin_family = af;
michael@0:         aAddr.in.sin_port = htons(NFC_TEST_PORT);
michael@0:         aAddr.in.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
michael@0:         aAddrSize = sizeof(sockaddr_in);
michael@0:         break;
michael@0:     default:
michael@0:         NS_WARNING("Socket type not handled by connector!");
michael@0:         return false;
michael@0:     }
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: bool
michael@0: NfcConnector::SetUp(int aFd)
michael@0: {
michael@0:     // Nothing to do here.
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: bool
michael@0: NfcConnector::SetUpListenSocket(int aFd)
michael@0: {
michael@0:     // Nothing to do here.
michael@0:     return true;
michael@0: }
michael@0: 
michael@0: void
michael@0: NfcConnector::GetSocketAddr(const sockaddr_any& aAddr,
michael@0:                             nsAString& aAddrStr)
michael@0: {
michael@0:     MOZ_CRASH("This should never be called!");
michael@0: }
michael@0: 
michael@0: } // anonymous namespace
michael@0: 
michael@0: namespace mozilla {
michael@0: namespace ipc {
michael@0: 
michael@0: NfcConsumer::NfcConsumer(WorkerCrossThreadDispatcher* aDispatcher)
michael@0:     : mDispatcher(aDispatcher)
michael@0:     , mShutdown(false)
michael@0: {
michael@0:     mAddress = NFC_SOCKET_NAME;
michael@0: 
michael@0:     ConnectSocket(new NfcConnector(), mAddress.get());
michael@0: }
michael@0: 
michael@0: nsresult
michael@0: NfcConsumer::Register(WorkerCrossThreadDispatcher* aDispatcher)
michael@0: {
michael@0:     MOZ_ASSERT(NS_IsMainThread());
michael@0: 
michael@0:     if (sNfcConsumer) {
michael@0:         return NS_ERROR_FAILURE;
michael@0:     }
michael@0: 
michael@0:     nsRefPtr<ConnectWorkerToNFC> connection = new ConnectWorkerToNFC();
michael@0:     if (!aDispatcher->PostTask(connection)) {
michael@0:         return NS_ERROR_UNEXPECTED;
michael@0:     }
michael@0: 
michael@0:     // Now that we're set up, connect ourselves to the NFC thread.
michael@0:     sNfcConsumer = new NfcConsumer(aDispatcher);
michael@0:     return NS_OK;
michael@0: }
michael@0: 
michael@0: void
michael@0: NfcConsumer::Shutdown()
michael@0: {
michael@0:     MOZ_ASSERT(NS_IsMainThread());
michael@0: 
michael@0:     if (sNfcConsumer) {
michael@0:         sNfcConsumer->mShutdown = true;
michael@0:         sNfcConsumer->CloseSocket();
michael@0:         sNfcConsumer = nullptr;
michael@0:     }
michael@0: }
michael@0: 
michael@0: void
michael@0: NfcConsumer::ReceiveSocketData(nsAutoPtr<UnixSocketRawData>& aMessage)
michael@0: {
michael@0:     MOZ_ASSERT(NS_IsMainThread());
michael@0: 
michael@0:     nsRefPtr<DispatchNFCEvent> dre(new DispatchNFCEvent(aMessage.forget()));
michael@0:     mDispatcher->PostTask(dre);
michael@0: }
michael@0: 
michael@0: void
michael@0: NfcConsumer::OnConnectSuccess()
michael@0: {
michael@0:     // Nothing to do here.
michael@0:     CHROMIUM_LOG("NFC: %s\n", __FUNCTION__);
michael@0: }
michael@0: 
michael@0: void
michael@0: NfcConsumer::OnConnectError()
michael@0: {
michael@0:     CHROMIUM_LOG("NFC: %s\n", __FUNCTION__);
michael@0:     CloseSocket();
michael@0: }
michael@0: 
michael@0: void
michael@0: NfcConsumer::OnDisconnect()
michael@0: {
michael@0:     CHROMIUM_LOG("NFC: %s\n", __FUNCTION__);
michael@0:     if (!mShutdown) {
michael@0:         ConnectSocket(new NfcConnector(), mAddress.get(),
michael@0:                       GetSuggestedConnectDelayMs());
michael@0:     }
michael@0: }
michael@0: 
michael@0: } // namespace ipc
michael@0: } // namespace mozilla