C++ nsACString::EqualsLiteral方法代码示例

NS_IMETHODIMP
nsCertOverrideService::ClearValidityOverride(const nsACString & aHostName, int32_t aPort)
{
  if (aPort == 0 &&
      aHostName.EqualsLiteral("all:temporary-certificates")) {
    RemoveAllTemporaryOverrides();
    return NS_OK;
  }
  nsAutoCString hostPort;
  GetHostWithPort(aHostName, aPort, hostPort);
  {
    ReentrantMonitorAutoEnter lock(monitor);
    mSettingsTable.RemoveEntry(hostPort.get());
    Write();
  }
  SSL_ClearSessionCache();
  return NS_OK;
}

// IUDPSocketInternal interfaces
// callback while error happened in UDP socket operation
NS_IMETHODIMP NrSocketIpc::CallListenerError(const nsACString &type,
                                             const nsACString &message,
                                             const nsACString &filename,
                                             uint32_t line_number,
                                             uint32_t column_number) {
  ASSERT_ON_THREAD(main_thread_);
  MOZ_ASSERT(type.EqualsLiteral("onerror"));

  r_log(LOG_GENERIC, LOG_ERR, "UDP socket error:%s at %s:%d:%d",
        message.BeginReading(), filename.BeginReading(),
        line_number, column_number);

  ReentrantMonitorAutoEnter mon(monitor_);
  err_ = true;
  monitor_.NotifyAll();

  return NS_OK;
}

bool AndroidDecoderModule::SupportsMimeType(const nsACString& aMimeType) {
  if (jni::GetAPIVersion() < 16) {
    return false;
  }

  if (aMimeType.EqualsLiteral("video/mp4") ||
      aMimeType.EqualsLiteral("video/avc")) {
    return true;
  }

  // When checking "audio/x-wav", CreateDecoder can cause a JNI ERROR by
  // Accessing a stale local reference leading to a SIGSEGV crash.
  // To avoid this we check for wav types here.
  if (aMimeType.EqualsLiteral("audio/x-wav") ||
      aMimeType.EqualsLiteral("audio/wave; codecs=1") ||
      aMimeType.EqualsLiteral("audio/wave; codecs=6") ||
      aMimeType.EqualsLiteral("audio/wave; codecs=7") ||
      aMimeType.EqualsLiteral("audio/wave; codecs=65534")) {
    return false;
  }

  if ((VPXDecoder::IsVPX(aMimeType, VPXDecoder::VP8) &&
       !GetFeatureStatus(nsIGfxInfo::FEATURE_VP8_HW_DECODE)) ||
      (VPXDecoder::IsVPX(aMimeType, VPXDecoder::VP9) &&
       !GetFeatureStatus(nsIGfxInfo::FEATURE_VP9_HW_DECODE))) {
    return false;
  }

  // Prefer the gecko decoder for opus and vorbis; stagefright crashes
  // on content demuxed from mp4.
  // Not all android devices support FLAC even when they say they do.
  if (OpusDataDecoder::IsOpus(aMimeType) ||
      VorbisDataDecoder::IsVorbis(aMimeType) ||
      aMimeType.EqualsLiteral("audio/flac")) {
    SLOG("Rejecting audio of type %s", aMimeType.Data());
    return false;
  }

  // Prefer the gecko decoder for Theora.
  // Not all android devices support Theora even when they say they do.
  if (TheoraDecoder::IsTheora(aMimeType)) {
    SLOG("Rejecting video of type %s", aMimeType.Data());
    return false;
  }

  return java::HardwareCodecCapabilityUtils::FindDecoderCodecInfoForMimeType(
      TranslateMimeType(aMimeType));
}

/* static */
const Maybe<nsCString>
GMPDecoderModule::PreferredGMP(const nsACString& aMimeType)
{
  Maybe<nsCString> rv;
  if (aMimeType.EqualsLiteral("audio/mp4a-latm")) {
    switch (MediaPrefs::GMPAACPreferred()) {
      case 1: rv.emplace(kEMEKeySystemClearkey); break;
      case 2: rv.emplace(kEMEKeySystemPrimetime); break;
      default: break;
    }
  }

  if (MP4Decoder::IsH264(aMimeType)) {
    switch (MediaPrefs::GMPH264Preferred()) {
      case 1: rv.emplace(kEMEKeySystemClearkey); break;
      case 2: rv.emplace(kEMEKeySystemPrimetime); break;
      default: break;
    }
  }

  return rv;
}

static nsresult
FetcherURLDoneCallback(nsresult aStatus,
                       const nsACString &aContentType,
                       const nsACString &aCharset,
                       PRInt32 totalSize,
                       const PRUnichar* aMsg, void *tagData)
{
    nsMsgAttachmentHandler *ma = (nsMsgAttachmentHandler *) tagData;
    NS_ASSERTION(ma != nsnull, "not-null mime attachment");

    if (ma != nsnull)
    {
        ma->m_size = totalSize;
        if (!aContentType.IsEmpty())
        {
#ifdef XP_MACOSX
            //Do not change the type if we are dealing with an encoded (e.g., appledouble or zip) file
            if (!ma->mEncodedWorkingFile)
#else
            // can't send appledouble on non-macs
            if (!aContentType.EqualsLiteral("multipart/appledouble"))
#endif
            {
                PR_Free(ma->m_type);
                ma->m_type = ToNewCString(aContentType);
            }
        }

        if (!aCharset.IsEmpty())
        {
            PR_Free(ma->m_charset);
            ma->m_charset = ToNewCString(aCharset);
        }

        return ma->UrlExit(aStatus, aMsg);
    }
    else
        return NS_OK;
}

// callback while receiving UDP packet
NS_IMETHODIMP NrSocketIpc::CallListenerReceivedData(const nsACString &type,
                                                    const nsACString &host,
                                                    uint16_t port, uint8_t *data,
                                                    uint32_t data_length) {
  ASSERT_ON_THREAD(main_thread_);
  MOZ_ASSERT(type.EqualsLiteral("ondata"));

  PRNetAddr addr;
  memset(&addr, 0, sizeof(addr));

  {
    ReentrantMonitorAutoEnter mon(monitor_);

    if (PR_SUCCESS != PR_StringToNetAddr(host.BeginReading(), &addr)) {
      err_ = true;
      MOZ_ASSERT(false, "Failed to convert remote host to PRNetAddr");
      return NS_OK;
    }

    // Use PR_IpAddrNull to avoid address being reset to 0.
    if (PR_SUCCESS != PR_SetNetAddr(PR_IpAddrNull, addr.raw.family, port, &addr)) {
      err_ = true;
      MOZ_ASSERT(false, "Failed to set port in PRNetAddr");
      return NS_OK;
    }
  }

  nsAutoPtr<DataBuffer> buf(new DataBuffer(data, data_length));
  RefPtr<nr_udp_message> msg(new nr_udp_message(addr, buf));

  RUN_ON_THREAD(sts_thread_,
                mozilla::WrapRunnable(nsRefPtr<NrSocketIpc>(this),
                                      &NrSocketIpc::recv_callback_s,
                                      msg),
                NS_DISPATCH_NORMAL);
  return NS_OK;
}

void
ConvertTextAttributeToAtkAttribute(const nsACString& aName,
                                   const nsAString& aValue,
                                   AtkAttributeSet** aAttributeSet)
{
  // Handle attributes where atk has its own name.
  const char* atkName = nullptr;
  nsAutoString atkValue;
  if (aName.EqualsLiteral("color")) {
    // The format of the atk attribute is r,g,b and the gecko one is
    // rgb(r, g, b).
    atkValue = Substring(aValue, 4, aValue.Length() - 5);
    atkValue.StripWhitespace();
    atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_FG_COLOR];
  } else if (aName.EqualsLiteral("background-color")) {
    // The format of the atk attribute is r,g,b and the gecko one is
    // rgb(r, g, b).
    atkValue = Substring(aValue, 4, aValue.Length() - 5);
    atkValue.StripWhitespace();
    atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_BG_COLOR];
  } else if (aName.EqualsLiteral("font-family")) {
    atkValue = aValue;
    atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_FAMILY_NAME];
  } else if (aName.EqualsLiteral("font-size")) {
    // ATK wants the number of pixels without px at the end.
    atkValue = StringHead(aValue, aValue.Length() - 2);
    atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_SIZE];
  } else if (aName.EqualsLiteral("font-weight")) {
    atkValue = aValue;
    atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_WEIGHT];
  } else if (aName.EqualsLiteral("invalid")) {
    atkValue = aValue;
    atkName = sAtkTextAttrNames[ATK_TEXT_ATTR_INVALID];
  }

  if (atkName) {
    AtkAttribute* objAttr =
      static_cast<AtkAttribute*>(g_malloc(sizeof(AtkAttribute)));
    objAttr->name = g_strdup(atkName);
    objAttr->value = g_strdup(NS_ConvertUTF16toUTF8(atkValue).get());
    *aAttributeSet = g_slist_prepend(*aAttributeSet, objAttr);
  }
}

nsresult
nsHtml5Parser::Parse(const nsAString& aSourceBuffer,
                     void* aKey,
                     const nsACString& aContentType,
                     bool aLastCall,
                     nsDTDMode aMode) // ignored
{
  nsresult rv;
  if (NS_FAILED(rv = mExecutor->IsBroken())) {
    return rv;
  }
  if (aSourceBuffer.Length() > INT32_MAX) {
    return mExecutor->MarkAsBroken(NS_ERROR_OUT_OF_MEMORY);
  }

  // Maintain a reference to ourselves so we don't go away
  // till we're completely done. The old parser grips itself in this method.
  nsCOMPtr<nsIParser> kungFuDeathGrip(this);
  
  // Gripping the other objects just in case, since the other old grip
  // required grips to these, too.
  nsRefPtr<nsHtml5StreamParser> streamKungFuDeathGrip(GetStreamParser());
  nsRefPtr<nsHtml5TreeOpExecutor> treeOpKungFuDeathGrip(mExecutor);

  if (!mExecutor->HasStarted()) {
    NS_ASSERTION(!GetStreamParser(),
                 "Had stream parser but document.write started life cycle.");
    // This is the first document.write() on a document.open()ed document
    mExecutor->SetParser(this);
    mTreeBuilder->setScriptingEnabled(mExecutor->IsScriptEnabled());

    bool isSrcdoc = false;
    nsCOMPtr<nsIChannel> channel;
    rv = GetChannel(getter_AddRefs(channel));
    if (NS_SUCCEEDED(rv)) {
      isSrcdoc = NS_IsSrcdocChannel(channel);
    }
    mTreeBuilder->setIsSrcdocDocument(isSrcdoc);

    mTokenizer->start();
    mExecutor->Start();
    if (!aContentType.EqualsLiteral("text/html")) {
      mTreeBuilder->StartPlainText();
      mTokenizer->StartPlainText();
    }
    /*
     * If you move the following line, be very careful not to cause 
     * WillBuildModel to be called before the document has had its 
     * script global object set.
     */
    rv = mExecutor->WillBuildModel(eDTDMode_unknown);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  // Return early if the parser has processed EOF
  if (mExecutor->IsComplete()) {
    return NS_OK;
  }

  if (aLastCall && aSourceBuffer.IsEmpty() && !aKey) {
    // document.close()
    NS_ASSERTION(!GetStreamParser(),
                 "Had stream parser but got document.close().");
    if (mDocumentClosed) {
      // already closed
      return NS_OK;
    }
    mDocumentClosed = true;
    if (!mBlocked && !mInDocumentWrite) {
      return ParseUntilBlocked();
    }
    return NS_OK;
  }

  // If we got this far, we are dealing with a document.write or
  // document.writeln call--not document.close().

  NS_ASSERTION(IsInsertionPointDefined(),
               "Doc.write reached parser with undefined insertion point.");

  NS_ASSERTION(!(GetStreamParser() && !aKey),
               "Got a null key in a non-script-created parser");

  // XXX is this optimization bogus?
  if (aSourceBuffer.IsEmpty()) {
    return NS_OK;
  }

  // This guard is here to prevent document.close from tokenizing synchronously
  // while a document.write (that wrote the script that called document.close!)
  // is still on the call stack.
  mozilla::AutoRestore<bool> guard(mInDocumentWrite);
  mInDocumentWrite = true;

  // The script is identified by aKey. If there's nothing in the buffer
  // chain for that key, we'll insert at the head of the queue.
  // When the script leaves something in the queue, a zero-length
  // key-holder "buffer" is inserted in the queue. If the same script
  // leaves something in the chain again, it will be inserted immediately
  // before the old key holder belonging to the same script.
//.........这里部分代码省略.........

/* static */
bool
MP4Decoder::IsH264(const nsACString& aMimeType)
{
  return aMimeType.EqualsLiteral("video/mp4") ||
         aMimeType.EqualsLiteral("video/avc");
}

bool
OmxDecoderModule::SupportsMimeType(const nsACString& aMimeType) const
{
  return aMimeType.EqualsLiteral("audio/mp4a-latm");
}

bool
AppleDecoderModule::SupportsMimeType(const nsACString& aMimeType)
{
  return aMimeType.EqualsLiteral("audio/mpeg") ||
    PlatformDecoderModule::SupportsMimeType(aMimeType);
}

nsresult
Http2Decompressor::OutputHeader(const nsACString &name, const nsACString &value)
{
    // exclusions
  if (name.EqualsLiteral("connection") ||
      name.EqualsLiteral("host") ||
      name.EqualsLiteral("keep-alive") ||
      name.EqualsLiteral("proxy-connection") ||
      name.EqualsLiteral("te") ||
      name.EqualsLiteral("transfer-encoding") ||
      name.EqualsLiteral("upgrade") ||
      name.Equals(("accept-encoding"))) {
    nsCString toLog(name);
    LOG(("HTTP Decompressor illegal response header found : %s",
         toLog.get()));
    return NS_ERROR_ILLEGAL_VALUE;
  }

  // Look for upper case characters in the name.
  for (const char *cPtr = name.BeginReading();
       cPtr && cPtr < name.EndReading();
       ++cPtr) {
    if (*cPtr <= 'Z' && *cPtr >= 'A') {
      nsCString toLog(name);
      LOG(("HTTP Decompressor upper case response header found. [%s]\n",
           toLog.get()));
      return NS_ERROR_ILLEGAL_VALUE;
    }
  }

  // Look for CR OR LF in value - could be smuggling Sec 10.3
  // can map to space safely
  for (const char *cPtr = value.BeginReading();
       cPtr && cPtr < value.EndReading();
       ++cPtr) {
    if (*cPtr == '\r' || *cPtr== '\n') {
      char *wPtr = const_cast<char *>(cPtr);
      *wPtr = ' ';
    }
  }

  // Status comes first
  if (name.EqualsLiteral(":status")) {
    nsAutoCString status(NS_LITERAL_CSTRING("HTTP/2.0 "));
    status.Append(value);
    status.AppendLiteral("\r\n");
    mOutput->Insert(status, 0);
    mHeaderStatus = value;
  } else if (name.EqualsLiteral(":authority")) {
    mHeaderHost = value;
  } else if (name.EqualsLiteral(":scheme")) {
    mHeaderScheme = value;
  } else if (name.EqualsLiteral(":path")) {
    mHeaderPath = value;
  } else if (name.EqualsLiteral(":method")) {
    mHeaderMethod = value;
  }

  // http/2 transport level headers shouldn't be gatewayed into http/1
  if(*(name.BeginReading()) == ':') {
    LOG(("HTTP Decompressor not gatewaying %s into http/1",
         name.BeginReading()));
    return NS_OK;
  }

  mOutput->Append(name);
  mOutput->AppendLiteral(": ");
  // Special handling for set-cookie according to the spec
  bool isSetCookie = name.EqualsLiteral("set-cookie");
  int32_t valueLen = value.Length();
  nsAutoCString textValue;
  for (int32_t i = 0; i < valueLen; ++i) {
    if (value[i] == '\0') {
      if (isSetCookie) {
        LOG(("Http2Decompressor::OutputHeader %s %s", name.BeginReading(),
             textValue.get()));
        mOutput->Append(textValue);
        textValue.Truncate(0);
        mOutput->AppendLiteral("\r\n");
        mOutput->Append(name);
        mOutput->AppendLiteral(": ");
      } else {
        textValue.AppendLiteral(", ");
      }
    } else {
      textValue.Append(value[i]);
    }
  }
  LOG(("Http2Decompressor::OutputHeader %s %s", name.BeginReading(),
       textValue.get()));
  mOutput->Append(textValue);
  mOutput->AppendLiteral("\r\n");
  return NS_OK;
}

// Match stock icons with names
static SHSTOCKICONID
GetStockIconIDForName(const nsACString& aStockName)
{
  return aStockName.EqualsLiteral("uac-shield") ? SIID_SHIELD :
                                                  SIID_INVALID;
}

NS_IMETHODIMP
nsDSURIContentListener::DoContent(const nsACString& aContentType,
                                  bool aIsContentPreferred,
                                  nsIRequest* aRequest,
                                  nsIStreamListener** aContentHandler,
                                  bool* aAbortProcess)
{
  nsresult rv;
  NS_ENSURE_ARG_POINTER(aContentHandler);
  NS_ENSURE_TRUE(mDocShell, NS_ERROR_FAILURE);

  // Check whether X-Frame-Options permits us to load this content in an
  // iframe and abort the load (unless we've disabled x-frame-options
  // checking).
  if (!CheckFrameOptions(aRequest)) {
    *aAbortProcess = true;
    return NS_OK;
  }

  *aAbortProcess = false;

  // determine if the channel has just been retargeted to us...
  nsLoadFlags loadFlags = 0;
  nsCOMPtr<nsIChannel> aOpenedChannel = do_QueryInterface(aRequest);

  if (aOpenedChannel) {
    aOpenedChannel->GetLoadFlags(&loadFlags);
  }

  if (loadFlags & nsIChannel::LOAD_RETARGETED_DOCUMENT_URI) {
    // XXX: Why does this not stop the content too?
    mDocShell->Stop(nsIWebNavigation::STOP_NETWORK);

    mDocShell->SetLoadType(aIsContentPreferred ? LOAD_LINK : LOAD_NORMAL);
  }

  // In case of multipart jpeg request (mjpeg) we don't really want to
  // create new viewer since the one we already have is capable of
  // rendering multipart jpeg correctly (see bug 625012)
  nsCOMPtr<nsIChannel> baseChannel;
  if (nsCOMPtr<nsIMultiPartChannel> mpchan = do_QueryInterface(aRequest)) {
    mpchan->GetBaseChannel(getter_AddRefs(baseChannel));
  }

  bool reuseCV = baseChannel && baseChannel == mExistingJPEGRequest &&
                 aContentType.EqualsLiteral("image/jpeg");

  if (mExistingJPEGStreamListener && reuseCV) {
    RefPtr<nsIStreamListener> copy(mExistingJPEGStreamListener);
    copy.forget(aContentHandler);
    rv = NS_OK;
  } else {
    rv = mDocShell->CreateContentViewer(aContentType, aRequest, aContentHandler);
    if (NS_SUCCEEDED(rv) && reuseCV) {
      mExistingJPEGStreamListener = *aContentHandler;
    } else {
      mExistingJPEGStreamListener = nullptr;
    }
    mExistingJPEGRequest = baseChannel;
  }

  if (rv == NS_ERROR_REMOTE_XUL) {
    aRequest->Cancel(rv);
    *aAbortProcess = true;
    return NS_OK;
  }

  if (NS_FAILED(rv)) {
    // we don't know how to handle the content
    *aContentHandler = nullptr;
    return rv;
  }

  if (loadFlags & nsIChannel::LOAD_RETARGETED_DOCUMENT_URI) {
    nsCOMPtr<nsPIDOMWindowOuter> domWindow =
      mDocShell ? mDocShell->GetWindow() : nullptr;
    NS_ENSURE_TRUE(domWindow, NS_ERROR_FAILURE);
    domWindow->Focus();
  }

  return NS_OK;
}

// Instantiates but does not initialize decoder.
static
already_AddRefed<MediaDecoder>
InstantiateDecoder(const nsACString& aType, MediaDecoderOwner* aOwner)
{
  nsRefPtr<MediaDecoder> decoder;

#ifdef MOZ_FMP4
  if (IsMP4SupportedType(aType)) {
    decoder = new MP4Decoder();
    return decoder.forget();
  }
#endif
#ifdef MOZ_GSTREAMER
  if (IsGStreamerSupportedType(aType)) {
    decoder = new GStreamerDecoder();
    return decoder.forget();
  }
#endif
#ifdef MOZ_RAW
  if (IsRawType(aType)) {
    decoder = new RawDecoder();
    return decoder.forget();
  }
#endif
  if (IsOggType(aType)) {
    decoder = new OggDecoder();
    return decoder.forget();
  }
#ifdef MOZ_WAVE
  if (IsWaveType(aType)) {
    decoder = new WaveDecoder();
    return decoder.forget();
  }
#endif
#ifdef MOZ_OMX_DECODER
  if (IsOmxSupportedType(aType)) {
    // AMR audio is enabled for MMS, but we are discouraging Web and App
    // developers from using AMR, thus we only allow AMR to be played on WebApps.
    if (aType.EqualsLiteral(AUDIO_AMR) || aType.EqualsLiteral(AUDIO_3GPP)) {
      dom::HTMLMediaElement* element = aOwner->GetMediaElement();
      if (!element) {
        return nullptr;
      }
      nsIPrincipal* principal = element->NodePrincipal();
      if (!principal) {
        return nullptr;
      }
      if (principal->GetAppStatus() < nsIPrincipal::APP_STATUS_PRIVILEGED) {
        return nullptr;
      }
    }
#if ANDROID_VERSION >= 18
    decoder = MediaDecoder::IsOmxAsyncEnabled()
      ? static_cast<MediaDecoder*>(new MediaCodecDecoder())
      : static_cast<MediaDecoder*>(new MediaOmxDecoder());
#else
    decoder = new MediaOmxDecoder();
#endif
    return decoder.forget();
  }
#endif
#ifdef NECKO_PROTOCOL_rtsp
  if (IsRtspSupportedType(aType)) {
#if ANDROID_VERSION >= 18
    decoder = MediaDecoder::IsOmxAsyncEnabled()
      ? static_cast<MediaDecoder*>(new RtspMediaCodecDecoder())
      : static_cast<MediaDecoder*>(new RtspOmxDecoder());
#else
    decoder = new RtspOmxDecoder();
#endif
    return decoder.forget();
  }
#endif
#ifdef MOZ_ANDROID_OMX
  if (MediaDecoder::IsAndroidMediaEnabled() &&
      GetAndroidMediaPluginHost()->FindDecoder(aType, nullptr)) {
    decoder = new AndroidMediaDecoder(aType);
    return decoder.forget();
  }
#endif
#ifdef MOZ_WEBM
  if (IsWebMType(aType)) {
    decoder = new WebMDecoder();
    return decoder.forget();
  }
#endif
#ifdef MOZ_DIRECTSHOW
  // Note: DirectShow should come before WMF, so that we prefer DirectShow's
  // MP3 support over WMF's.
  if (IsDirectShowSupportedType(aType)) {
    decoder = new DirectShowDecoder();
    return decoder.forget();
  }
#endif
#ifdef MOZ_WMF
  if (IsWMFSupportedType(aType)) {
    decoder = new WMFDecoder();
    return decoder.forget();
  }
//.........这里部分代码省略.........