diff options
Diffstat (limited to 'image/decoders/icon/win/nsIconChannel.cpp')
| -rw-r--r-- | image/decoders/icon/win/nsIconChannel.cpp | 841 |
1 files changed, 841 insertions, 0 deletions
diff --git a/image/decoders/icon/win/nsIconChannel.cpp b/image/decoders/icon/win/nsIconChannel.cpp new file mode 100644 index 000000000..9ddcbbc48 --- /dev/null +++ b/image/decoders/icon/win/nsIconChannel.cpp @@ -0,0 +1,841 @@ +/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- + * + * 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 "mozilla/ArrayUtils.h" + +#include "nsIconChannel.h" +#include "nsIIconURI.h" +#include "nsIServiceManager.h" +#include "nsIInterfaceRequestor.h" +#include "nsIInterfaceRequestorUtils.h" +#include "nsXPIDLString.h" +#include "nsReadableUtils.h" +#include "nsMimeTypes.h" +#include "nsMemory.h" +#include "nsIStringStream.h" +#include "nsIURL.h" +#include "nsIOutputStream.h" +#include "nsIPipe.h" +#include "nsNetCID.h" +#include "nsIFile.h" +#include "nsIFileURL.h" +#include "nsIMIMEService.h" +#include "nsCExternalHandlerService.h" +#include "nsDirectoryServiceDefs.h" +#include "nsProxyRelease.h" +#include "nsContentSecurityManager.h" +#include "nsContentUtils.h" + +#ifdef _WIN32_WINNT +#undef _WIN32_WINNT +#endif +#define _WIN32_WINNT 0x0600 + +// we need windows.h to read out registry information... +#include <windows.h> +#include <shellapi.h> +#include <shlobj.h> +#include <objbase.h> +#include <wchar.h> + +using namespace mozilla; + +struct ICONFILEHEADER { + uint16_t ifhReserved; + uint16_t ifhType; + uint16_t ifhCount; +}; + +struct ICONENTRY { + int8_t ieWidth; + int8_t ieHeight; + uint8_t ieColors; + uint8_t ieReserved; + uint16_t iePlanes; + uint16_t ieBitCount; + uint32_t ieSizeImage; + uint32_t ieFileOffset; +}; + +// Match stock icons with names +static SHSTOCKICONID +GetStockIconIDForName(const nsACString& aStockName) +{ + return aStockName.EqualsLiteral("uac-shield") ? SIID_SHIELD : + SIID_INVALID; +} + +// nsIconChannel methods +nsIconChannel::nsIconChannel() +{ +} + +nsIconChannel::~nsIconChannel() +{ + if (mLoadInfo) { + NS_ReleaseOnMainThread(mLoadInfo.forget()); + } +} + +NS_IMPL_ISUPPORTS(nsIconChannel, + nsIChannel, + nsIRequest, + nsIRequestObserver, + nsIStreamListener) + +nsresult +nsIconChannel::Init(nsIURI* uri) +{ + NS_ASSERTION(uri, "no uri"); + mUrl = uri; + mOriginalURI = uri; + nsresult rv; + mPump = do_CreateInstance(NS_INPUTSTREAMPUMP_CONTRACTID, &rv); + return rv; +} + +//////////////////////////////////////////////////////////////////////////////// +// nsIRequest methods: + +NS_IMETHODIMP +nsIconChannel::GetName(nsACString& result) +{ + return mUrl->GetSpec(result); +} + +NS_IMETHODIMP +nsIconChannel::IsPending(bool* result) +{ + return mPump->IsPending(result); +} + +NS_IMETHODIMP +nsIconChannel::GetStatus(nsresult* status) +{ + return mPump->GetStatus(status); +} + +NS_IMETHODIMP +nsIconChannel::Cancel(nsresult status) +{ + return mPump->Cancel(status); +} + +NS_IMETHODIMP +nsIconChannel::Suspend(void) +{ + return mPump->Suspend(); +} + +NS_IMETHODIMP +nsIconChannel::Resume(void) +{ + return mPump->Resume(); +} +NS_IMETHODIMP +nsIconChannel::GetLoadGroup(nsILoadGroup** aLoadGroup) +{ + *aLoadGroup = mLoadGroup; + NS_IF_ADDREF(*aLoadGroup); + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::SetLoadGroup(nsILoadGroup* aLoadGroup) +{ + mLoadGroup = aLoadGroup; + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::GetLoadFlags(uint32_t* aLoadAttributes) +{ + return mPump->GetLoadFlags(aLoadAttributes); +} + +NS_IMETHODIMP +nsIconChannel::SetLoadFlags(uint32_t aLoadAttributes) +{ + return mPump->SetLoadFlags(aLoadAttributes); +} + +//////////////////////////////////////////////////////////////////////////////// +// nsIChannel methods: + +NS_IMETHODIMP +nsIconChannel::GetOriginalURI(nsIURI** aURI) +{ + *aURI = mOriginalURI; + NS_ADDREF(*aURI); + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::SetOriginalURI(nsIURI* aURI) +{ + NS_ENSURE_ARG_POINTER(aURI); + mOriginalURI = aURI; + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::GetURI(nsIURI** aURI) +{ + *aURI = mUrl; + NS_IF_ADDREF(*aURI); + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::Open(nsIInputStream** _retval) +{ + return MakeInputStream(_retval, false); +} + +NS_IMETHODIMP +nsIconChannel::Open2(nsIInputStream** aStream) +{ + nsCOMPtr<nsIStreamListener> listener; + nsresult rv = nsContentSecurityManager::doContentSecurityCheck(this, listener); + NS_ENSURE_SUCCESS(rv, rv); + return Open(aStream); +} + +nsresult +nsIconChannel::ExtractIconInfoFromUrl(nsIFile** aLocalFile, + uint32_t* aDesiredImageSize, nsCString& aContentType, + nsCString& aFileExtension) +{ + nsresult rv = NS_OK; + nsCOMPtr<nsIMozIconURI> iconURI (do_QueryInterface(mUrl, &rv)); + NS_ENSURE_SUCCESS(rv, rv); + + iconURI->GetImageSize(aDesiredImageSize); + iconURI->GetContentType(aContentType); + iconURI->GetFileExtension(aFileExtension); + + nsCOMPtr<nsIURL> url; + rv = iconURI->GetIconURL(getter_AddRefs(url)); + if (NS_FAILED(rv) || !url) return NS_OK; + + nsCOMPtr<nsIFileURL> fileURL = do_QueryInterface(url, &rv); + if (NS_FAILED(rv) || !fileURL) return NS_OK; + + nsCOMPtr<nsIFile> file; + rv = fileURL->GetFile(getter_AddRefs(file)); + if (NS_FAILED(rv) || !file) return NS_OK; + + return file->Clone(aLocalFile); +} + +NS_IMETHODIMP +nsIconChannel::AsyncOpen(nsIStreamListener* aListener, + nsISupports* ctxt) +{ + MOZ_ASSERT(!mLoadInfo || + mLoadInfo->GetSecurityMode() == 0 || + mLoadInfo->GetInitialSecurityCheckDone() || + (mLoadInfo->GetSecurityMode() == nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_DATA_IS_NULL && + nsContentUtils::IsSystemPrincipal(mLoadInfo->LoadingPrincipal())), + "security flags in loadInfo but asyncOpen2() not called"); + + nsCOMPtr<nsIInputStream> inStream; + nsresult rv = MakeInputStream(getter_AddRefs(inStream), true); + if (NS_FAILED(rv)) { + return rv; + } + + // Init our streampump + rv = mPump->Init(inStream, int64_t(-1), int64_t(-1), 0, 0, false); + if (NS_FAILED(rv)) { + return rv; + } + + rv = mPump->AsyncRead(this, ctxt); + if (NS_SUCCEEDED(rv)) { + // Store our real listener + mListener = aListener; + // Add ourself to the load group, if available + if (mLoadGroup) { + mLoadGroup->AddRequest(this, nullptr); + } + } + return rv; +} + +NS_IMETHODIMP +nsIconChannel::AsyncOpen2(nsIStreamListener* aListener) +{ + nsCOMPtr<nsIStreamListener> listener = aListener; + nsresult rv = nsContentSecurityManager::doContentSecurityCheck(this, listener); + NS_ENSURE_SUCCESS(rv, rv); + return AsyncOpen(listener, nullptr); +} + +static DWORD +GetSpecialFolderIcon(nsIFile* aFile, int aFolder, + SHFILEINFOW* aSFI, UINT aInfoFlags) +{ + DWORD shellResult = 0; + + if (!aFile) { + return shellResult; + } + + wchar_t fileNativePath[MAX_PATH]; + nsAutoString fileNativePathStr; + aFile->GetPath(fileNativePathStr); + ::GetShortPathNameW(fileNativePathStr.get(), fileNativePath, + ArrayLength(fileNativePath)); + + LPITEMIDLIST idList; + HRESULT hr = ::SHGetSpecialFolderLocation(nullptr, aFolder, &idList); + if (SUCCEEDED(hr)) { + wchar_t specialNativePath[MAX_PATH]; + ::SHGetPathFromIDListW(idList, specialNativePath); + ::GetShortPathNameW(specialNativePath, specialNativePath, + ArrayLength(specialNativePath)); + + if (!wcsicmp(fileNativePath, specialNativePath)) { + aInfoFlags |= (SHGFI_PIDL | SHGFI_SYSICONINDEX); + shellResult = ::SHGetFileInfoW((LPCWSTR)(LPCITEMIDLIST)idList, 0, + aSFI, + sizeof(*aSFI), aInfoFlags); + } + } + CoTaskMemFree(idList); + return shellResult; +} + +static UINT +GetSizeInfoFlag(uint32_t aDesiredImageSize) +{ + return + (UINT) (aDesiredImageSize > 16 ? SHGFI_SHELLICONSIZE : SHGFI_SMALLICON); +} + +nsresult +nsIconChannel::GetHIconFromFile(HICON* hIcon) +{ + nsXPIDLCString contentType; + nsCString fileExt; + nsCOMPtr<nsIFile> localFile; // file we want an icon for + uint32_t desiredImageSize; + nsresult rv = ExtractIconInfoFromUrl(getter_AddRefs(localFile), + &desiredImageSize, contentType, + fileExt); + NS_ENSURE_SUCCESS(rv, rv); + + // if the file exists, we are going to use it's real attributes... + // otherwise we only want to use it for it's extension... + SHFILEINFOW sfi; + UINT infoFlags = SHGFI_ICON; + + bool fileExists = false; + + nsAutoString filePath; + CopyASCIItoUTF16(fileExt, filePath); + if (localFile) { + rv = localFile->Normalize(); + NS_ENSURE_SUCCESS(rv, rv); + + localFile->GetPath(filePath); + if (filePath.Length() < 2 || filePath[1] != ':') { + return NS_ERROR_MALFORMED_URI; // UNC + } + + if (filePath.Last() == ':') { + filePath.Append('\\'); + } else { + localFile->Exists(&fileExists); + if (!fileExists) { + localFile->GetLeafName(filePath); + } + } + } + + if (!fileExists) { + infoFlags |= SHGFI_USEFILEATTRIBUTES; + } + + infoFlags |= GetSizeInfoFlag(desiredImageSize); + + // if we have a content type... then use it! but for existing files, + // we want to show their real icon. + if (!fileExists && !contentType.IsEmpty()) { + nsCOMPtr<nsIMIMEService> mimeService + (do_GetService(NS_MIMESERVICE_CONTRACTID, &rv)); + NS_ENSURE_SUCCESS(rv, rv); + + nsAutoCString defFileExt; + mimeService->GetPrimaryExtension(contentType, fileExt, defFileExt); + // If the mime service does not know about this mime type, we show + // the generic icon. + // In any case, we need to insert a '.' before the extension. + filePath = NS_LITERAL_STRING(".") + + NS_ConvertUTF8toUTF16(defFileExt); + } + + // Is this the "Desktop" folder? + DWORD shellResult = GetSpecialFolderIcon(localFile, CSIDL_DESKTOP, + &sfi, infoFlags); + if (!shellResult) { + // Is this the "My Documents" folder? + shellResult = GetSpecialFolderIcon(localFile, CSIDL_PERSONAL, + &sfi, infoFlags); + } + + // There are other "Special Folders" and Namespace entities that we + // are not fetching icons for, see: + // http://msdn.microsoft.com/library/default.asp?url=/library/en-us/ + // shellcc/platform/shell/reference/enums/csidl.asp + // If we ever need to get them, code to do so would be inserted here. + + // Not a special folder, or something else failed above. + if (!shellResult) { + shellResult = ::SHGetFileInfoW(filePath.get(), + FILE_ATTRIBUTE_ARCHIVE, + &sfi, sizeof(sfi), infoFlags); + } + + if (shellResult && sfi.hIcon) { + *hIcon = sfi.hIcon; + } else { + rv = NS_ERROR_NOT_AVAILABLE; + } + + return rv; +} + +nsresult +nsIconChannel::GetStockHIcon(nsIMozIconURI* aIconURI, + HICON* hIcon) +{ + nsresult rv = NS_OK; + + // We can only do this on Vista or above + HMODULE hShellDLL = ::LoadLibraryW(L"shell32.dll"); + decltype(SHGetStockIconInfo)* pSHGetStockIconInfo = + (decltype(SHGetStockIconInfo)*) ::GetProcAddress(hShellDLL, + "SHGetStockIconInfo"); + + if (pSHGetStockIconInfo) { + uint32_t desiredImageSize; + aIconURI->GetImageSize(&desiredImageSize); + nsAutoCString stockIcon; + aIconURI->GetStockIcon(stockIcon); + + SHSTOCKICONID stockIconID = GetStockIconIDForName(stockIcon); + if (stockIconID == SIID_INVALID) { + return NS_ERROR_NOT_AVAILABLE; + } + + UINT infoFlags = SHGSI_ICON; + infoFlags |= GetSizeInfoFlag(desiredImageSize); + + SHSTOCKICONINFO sii = {0}; + sii.cbSize = sizeof(sii); + HRESULT hr = pSHGetStockIconInfo(stockIconID, infoFlags, &sii); + + if (SUCCEEDED(hr)) { + *hIcon = sii.hIcon; + } else { + rv = NS_ERROR_FAILURE; + } + } else { + rv = NS_ERROR_NOT_AVAILABLE; + } + + if (hShellDLL) { + ::FreeLibrary(hShellDLL); + } + + return rv; +} + +// Given a BITMAPINFOHEADER, returns the size of the color table. +static int +GetColorTableSize(BITMAPINFOHEADER* aHeader) +{ + int colorTableSize = -1; + + // http://msdn.microsoft.com/en-us/library/dd183376%28v=VS.85%29.aspx + switch (aHeader->biBitCount) { + case 0: + colorTableSize = 0; + break; + case 1: + colorTableSize = 2 * sizeof(RGBQUAD); + break; + case 4: + case 8: { + // The maximum possible size for the color table is 2**bpp, so check for + // that and fail if we're not in those bounds + unsigned int maxEntries = 1 << (aHeader->biBitCount); + if (aHeader->biClrUsed > 0 && aHeader->biClrUsed <= maxEntries) { + colorTableSize = aHeader->biClrUsed * sizeof(RGBQUAD); + } else if (aHeader->biClrUsed == 0) { + colorTableSize = maxEntries * sizeof(RGBQUAD); + } + break; + } + case 16: + case 32: + // If we have BI_BITFIELDS compression, we would normally need 3 DWORDS for + // the bitfields mask which would be stored in the color table; However, + // we instead force the bitmap to request data of type BI_RGB so the color + // table should be of size 0. + // Setting aHeader->biCompression = BI_RGB forces the later call to + // GetDIBits to return to us BI_RGB data. + if (aHeader->biCompression == BI_BITFIELDS) { + aHeader->biCompression = BI_RGB; + } + colorTableSize = 0; + break; + case 24: + colorTableSize = 0; + break; + } + + if (colorTableSize < 0) { + NS_WARNING("Unable to figure out the color table size for this bitmap"); + } + + return colorTableSize; +} + +// Given a header and a size, creates a freshly allocated BITMAPINFO structure. +// It is the caller's responsibility to null-check and delete the structure. +static BITMAPINFO* +CreateBitmapInfo(BITMAPINFOHEADER* aHeader, size_t aColorTableSize) +{ + BITMAPINFO* bmi = (BITMAPINFO*) ::operator new(sizeof(BITMAPINFOHEADER) + + aColorTableSize, + mozilla::fallible); + if (bmi) { + memcpy(bmi, aHeader, sizeof(BITMAPINFOHEADER)); + memset(bmi->bmiColors, 0, aColorTableSize); + } + return bmi; +} + +nsresult +nsIconChannel::MakeInputStream(nsIInputStream** _retval, bool aNonBlocking) +{ + // Check whether the icon requested's a file icon or a stock icon + nsresult rv = NS_ERROR_NOT_AVAILABLE; + + // GetDIBits does not exist on windows mobile. + HICON hIcon = nullptr; + + nsCOMPtr<nsIMozIconURI> iconURI(do_QueryInterface(mUrl, &rv)); + NS_ENSURE_SUCCESS(rv, rv); + + nsAutoCString stockIcon; + iconURI->GetStockIcon(stockIcon); + if (!stockIcon.IsEmpty()) { + rv = GetStockHIcon(iconURI, &hIcon); + } else { + rv = GetHIconFromFile(&hIcon); + } + + NS_ENSURE_SUCCESS(rv, rv); + + if (hIcon) { + // we got a handle to an icon. Now we want to get a bitmap for the icon + // using GetIconInfo.... + ICONINFO iconInfo; + if (GetIconInfo(hIcon, &iconInfo)) { + // we got the bitmaps, first find out their size + HDC hDC = CreateCompatibleDC(nullptr); // get a device context for + // the screen. + BITMAPINFOHEADER maskHeader = {sizeof(BITMAPINFOHEADER)}; + BITMAPINFOHEADER colorHeader = {sizeof(BITMAPINFOHEADER)}; + int colorTableSize, maskTableSize; + if (GetDIBits(hDC, iconInfo.hbmMask, 0, 0, nullptr, + (BITMAPINFO*)&maskHeader, DIB_RGB_COLORS) && + GetDIBits(hDC, iconInfo.hbmColor, 0, 0, nullptr, + (BITMAPINFO*)&colorHeader, DIB_RGB_COLORS) && + maskHeader.biHeight == colorHeader.biHeight && + maskHeader.biWidth == colorHeader.biWidth && + colorHeader.biBitCount > 8 && + colorHeader.biSizeImage > 0 && + colorHeader.biWidth >= 0 && colorHeader.biWidth <= 255 && + colorHeader.biHeight >= 0 && colorHeader.biHeight <= 255 && + maskHeader.biSizeImage > 0 && + (colorTableSize = GetColorTableSize(&colorHeader)) >= 0 && + (maskTableSize = GetColorTableSize(&maskHeader)) >= 0) { + uint32_t iconSize = sizeof(ICONFILEHEADER) + + sizeof(ICONENTRY) + + sizeof(BITMAPINFOHEADER) + + colorHeader.biSizeImage + + maskHeader.biSizeImage; + + UniquePtr<char[]> buffer = MakeUnique<char[]>(iconSize); + if (!buffer) { + rv = NS_ERROR_OUT_OF_MEMORY; + } else { + char* whereTo = buffer.get(); + int howMuch; + + // the data starts with an icon file header + ICONFILEHEADER iconHeader; + iconHeader.ifhReserved = 0; + iconHeader.ifhType = 1; + iconHeader.ifhCount = 1; + howMuch = sizeof(ICONFILEHEADER); + memcpy(whereTo, &iconHeader, howMuch); + whereTo += howMuch; + + // followed by the single icon entry + ICONENTRY iconEntry; + iconEntry.ieWidth = static_cast<int8_t>(colorHeader.biWidth); + iconEntry.ieHeight = static_cast<int8_t>(colorHeader.biHeight); + iconEntry.ieColors = 0; + iconEntry.ieReserved = 0; + iconEntry.iePlanes = 1; + iconEntry.ieBitCount = colorHeader.biBitCount; + iconEntry.ieSizeImage = sizeof(BITMAPINFOHEADER) + + colorHeader.biSizeImage + + maskHeader.biSizeImage; + iconEntry.ieFileOffset = sizeof(ICONFILEHEADER) + sizeof(ICONENTRY); + howMuch = sizeof(ICONENTRY); + memcpy(whereTo, &iconEntry, howMuch); + whereTo += howMuch; + + // followed by the bitmap info header + // (doubling the height because icons have two bitmaps) + colorHeader.biHeight *= 2; + colorHeader.biSizeImage += maskHeader.biSizeImage; + howMuch = sizeof(BITMAPINFOHEADER); + memcpy(whereTo, &colorHeader, howMuch); + whereTo += howMuch; + colorHeader.biHeight /= 2; + colorHeader.biSizeImage -= maskHeader.biSizeImage; + + // followed by the XOR bitmap data (colorHeader) + // (you'd expect the color table to come here, but it apparently + // doesn't) + BITMAPINFO* colorInfo = CreateBitmapInfo(&colorHeader, + colorTableSize); + if (colorInfo && GetDIBits(hDC, iconInfo.hbmColor, 0, + colorHeader.biHeight, whereTo, colorInfo, + DIB_RGB_COLORS)) { + whereTo += colorHeader.biSizeImage; + + // and finally the AND bitmap data (maskHeader) + BITMAPINFO* maskInfo = CreateBitmapInfo(&maskHeader, maskTableSize); + if (maskInfo && GetDIBits(hDC, iconInfo.hbmMask, 0, + maskHeader.biHeight, whereTo, maskInfo, + DIB_RGB_COLORS)) { + // Now, create a pipe and stuff our data into it + nsCOMPtr<nsIInputStream> inStream; + nsCOMPtr<nsIOutputStream> outStream; + rv = NS_NewPipe(getter_AddRefs(inStream), + getter_AddRefs(outStream), + iconSize, iconSize, aNonBlocking); + if (NS_SUCCEEDED(rv)) { + uint32_t written; + rv = outStream->Write(buffer.get(), iconSize, &written); + if (NS_SUCCEEDED(rv)) { + NS_ADDREF(*_retval = inStream); + } + } + + } // if we got bitmap bits + delete maskInfo; + } // if we got mask bits + delete colorInfo; + } // if we allocated the buffer + } // if we got mask size + + DeleteDC(hDC); + DeleteObject(iconInfo.hbmColor); + DeleteObject(iconInfo.hbmMask); + } // if we got icon info + DestroyIcon(hIcon); + } // if we got an hIcon + + // If we didn't make a stream, then fail. + if (!*_retval && NS_SUCCEEDED(rv)) { + rv = NS_ERROR_NOT_AVAILABLE; + } + return rv; +} + +NS_IMETHODIMP +nsIconChannel::GetContentType(nsACString& aContentType) +{ + aContentType.AssignLiteral(IMAGE_ICO); + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::SetContentType(const nsACString& aContentType) +{ + // It doesn't make sense to set the content-type on this type + // of channel... + return NS_ERROR_FAILURE; +} + +NS_IMETHODIMP nsIconChannel::GetContentCharset(nsACString& aContentCharset) +{ + aContentCharset.Truncate(); + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::SetContentCharset(const nsACString& aContentCharset) +{ + // It doesn't make sense to set the content-charset on this type + // of channel... + return NS_ERROR_FAILURE; +} + +NS_IMETHODIMP +nsIconChannel::GetContentDisposition(uint32_t* aContentDisposition) +{ + return NS_ERROR_NOT_AVAILABLE; +} + +NS_IMETHODIMP +nsIconChannel::SetContentDisposition(uint32_t aContentDisposition) +{ + return NS_ERROR_NOT_AVAILABLE; +} + +NS_IMETHODIMP +nsIconChannel:: + GetContentDispositionFilename(nsAString& aContentDispositionFilename) +{ + return NS_ERROR_NOT_AVAILABLE; +} + +NS_IMETHODIMP +nsIconChannel:: + SetContentDispositionFilename(const nsAString& aContentDispositionFilename) +{ + return NS_ERROR_NOT_AVAILABLE; +} + +NS_IMETHODIMP +nsIconChannel:: + GetContentDispositionHeader(nsACString& aContentDispositionHeader) +{ + return NS_ERROR_NOT_AVAILABLE; +} + +NS_IMETHODIMP +nsIconChannel::GetContentLength(int64_t* aContentLength) +{ + *aContentLength = 0; + return NS_ERROR_FAILURE; +} + +NS_IMETHODIMP +nsIconChannel::SetContentLength(int64_t aContentLength) +{ + NS_NOTREACHED("nsIconChannel::SetContentLength"); + return NS_ERROR_NOT_IMPLEMENTED; +} + +NS_IMETHODIMP +nsIconChannel::GetOwner(nsISupports** aOwner) +{ + *aOwner = mOwner.get(); + NS_IF_ADDREF(*aOwner); + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::SetOwner(nsISupports* aOwner) +{ + mOwner = aOwner; + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::GetLoadInfo(nsILoadInfo** aLoadInfo) +{ + NS_IF_ADDREF(*aLoadInfo = mLoadInfo); + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::SetLoadInfo(nsILoadInfo* aLoadInfo) +{ + mLoadInfo = aLoadInfo; + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel:: + GetNotificationCallbacks(nsIInterfaceRequestor** aNotificationCallbacks) +{ + *aNotificationCallbacks = mCallbacks.get(); + NS_IF_ADDREF(*aNotificationCallbacks); + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel:: + SetNotificationCallbacks(nsIInterfaceRequestor* aNotificationCallbacks) +{ + mCallbacks = aNotificationCallbacks; + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::GetSecurityInfo(nsISupports** aSecurityInfo) +{ + *aSecurityInfo = nullptr; + return NS_OK; +} + +// nsIRequestObserver methods +NS_IMETHODIMP nsIconChannel::OnStartRequest(nsIRequest* aRequest, + nsISupports* aContext) +{ + if (mListener) { + return mListener->OnStartRequest(this, aContext); + } + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::OnStopRequest(nsIRequest* aRequest, + nsISupports* aContext, + nsresult aStatus) +{ + if (mListener) { + mListener->OnStopRequest(this, aContext, aStatus); + mListener = nullptr; + } + + // Remove from load group + if (mLoadGroup) { + mLoadGroup->RemoveRequest(this, nullptr, aStatus); + } + + // Drop notification callbacks to prevent cycles. + mCallbacks = nullptr; + + return NS_OK; +} + +// nsIStreamListener methods +NS_IMETHODIMP +nsIconChannel::OnDataAvailable(nsIRequest* aRequest, + nsISupports* aContext, + nsIInputStream* aStream, + uint64_t aOffset, + uint32_t aCount) +{ + if (mListener) { + return mListener->OnDataAvailable(this, aContext, aStream, aOffset, aCount); + } + return NS_OK; +} |