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-rw-r--r--image/decoders/icon/win/nsIconChannel.cpp997
1 files changed, 997 insertions, 0 deletions
diff --git a/image/decoders/icon/win/nsIconChannel.cpp b/image/decoders/icon/win/nsIconChannel.cpp
new file mode 100644
index 0000000000..6c93dc3bf2
--- /dev/null
+++ b/image/decoders/icon/win/nsIconChannel.cpp
@@ -0,0 +1,997 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*-
+ *
+ * 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 "mozilla/BasePrincipal.h"
+#include "mozilla/Monitor.h"
+#include "mozilla/SyncRunnable.h"
+#include "mozilla/UniquePtr.h"
+#include "mozilla/UniquePtrExtensions.h"
+#include "mozilla/WindowsProcessMitigations.h"
+#include "mozilla/dom/ContentChild.h"
+#include "mozilla/ipc/ByteBuf.h"
+
+#include "nsComponentManagerUtils.h"
+#include "nsIconChannel.h"
+#include "nsIIconURI.h"
+#include "nsIInterfaceRequestor.h"
+#include "nsIInterfaceRequestorUtils.h"
+#include "nsString.h"
+#include "nsReadableUtils.h"
+#include "nsMimeTypes.h"
+#include "nsIURL.h"
+#include "nsIPipe.h"
+#include "nsNetCID.h"
+#include "nsIFile.h"
+#include "nsIFileURL.h"
+#include "nsIIconURI.h"
+#include "nsIAsyncInputStream.h"
+#include "nsIAsyncOutputStream.h"
+#include "nsIMIMEService.h"
+#include "nsCExternalHandlerService.h"
+#include "nsDirectoryServiceDefs.h"
+#include "nsProxyRelease.h"
+#include "nsContentSecurityManager.h"
+#include "nsContentUtils.h"
+#include "nsNetUtil.h"
+#include "nsThreadUtils.h"
+
+#include "Decoder.h"
+#include "DecodePool.h"
+
+// 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;
+using namespace mozilla::image;
+
+using mozilla::ipc::ByteBuf;
+
+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;
+};
+
+struct IconPathInfo {
+ nsCOMPtr<nsIFile> localFile;
+ nsAutoString filePath;
+ UINT infoFlags = 0;
+};
+
+using HIconPromise = MozPromise<HICON, nsresult, true>;
+
+static UINT GetSizeInfoFlag(uint32_t aDesiredImageSize) {
+ return aDesiredImageSize > 16 ? SHGFI_SHELLICONSIZE : SHGFI_SMALLICON;
+}
+
+static nsresult ExtractIconInfoFromUrl(nsIURI* aUrl, nsIFile** aLocalFile,
+ uint32_t* aDesiredImageSize,
+ nsCString& aContentType,
+ nsCString& aFileExtension) {
+ nsresult rv = NS_OK;
+ nsCOMPtr<nsIMozIconURI> iconURI(do_QueryInterface(aUrl, &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);
+}
+
+static nsresult ExtractIconPathInfoFromUrl(nsIURI* aUrl,
+ IconPathInfo* aIconPathInfo) {
+ nsCString contentType;
+ nsCString fileExt;
+ nsCOMPtr<nsIFile> localFile; // file we want an icon for
+ uint32_t desiredImageSize;
+ nsresult rv = ExtractIconInfoFromUrl(aUrl, 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...
+ 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 = u"."_ns + NS_ConvertUTF8toUTF16(defFileExt);
+ }
+
+ if (!localFile && !fileExists &&
+ ((filePath.Length() == 1 && filePath.Last() == '.') ||
+ filePath.Length() == 0)) {
+ filePath = u".MozBogusExtensionMoz"_ns;
+ }
+
+ aIconPathInfo->localFile = std::move(localFile);
+ aIconPathInfo->filePath = std::move(filePath);
+ aIconPathInfo->infoFlags = infoFlags;
+
+ return NS_OK;
+}
+
+static bool GetSpecialFolderIcon(nsIFile* aFile, int aFolder, UINT aInfoFlags,
+ HICON* aIcon) {
+ if (!aFile) {
+ return false;
+ }
+
+ wchar_t fileNativePath[MAX_PATH];
+ nsAutoString fileNativePathStr;
+ aFile->GetPath(fileNativePathStr);
+ ::GetShortPathNameW(fileNativePathStr.get(), fileNativePath,
+ ArrayLength(fileNativePath));
+
+ struct IdListDeleter {
+ void operator()(ITEMIDLIST* ptr) { ::CoTaskMemFree(ptr); }
+ };
+
+ UniquePtr<ITEMIDLIST, IdListDeleter> idList;
+ HRESULT hr =
+ ::SHGetSpecialFolderLocation(nullptr, aFolder, getter_Transfers(idList));
+ if (FAILED(hr)) {
+ return false;
+ }
+
+ wchar_t specialNativePath[MAX_PATH];
+ ::SHGetPathFromIDListW(idList.get(), specialNativePath);
+ ::GetShortPathNameW(specialNativePath, specialNativePath,
+ ArrayLength(specialNativePath));
+
+ if (wcsicmp(fileNativePath, specialNativePath) != 0) {
+ return false;
+ }
+
+ SHFILEINFOW sfi = {};
+ aInfoFlags |= (SHGFI_PIDL | SHGFI_SYSICONINDEX);
+ if (::SHGetFileInfoW((LPCWSTR)(LPCITEMIDLIST)idList.get(), 0, &sfi,
+ sizeof(sfi), aInfoFlags) == 0) {
+ return false;
+ }
+
+ *aIcon = sfi.hIcon;
+ return true;
+}
+
+static nsresult GetIconHandleFromPathInfo(const IconPathInfo& aPathInfo,
+ HICON* aIcon) {
+ MOZ_DIAGNOSTIC_ASSERT(!IsWin32kLockedDown());
+
+ // Is this the "Desktop" folder?
+ if (GetSpecialFolderIcon(aPathInfo.localFile, CSIDL_DESKTOP,
+ aPathInfo.infoFlags, aIcon)) {
+ return NS_OK;
+ }
+
+ // Is this the "My Documents" folder?
+ if (GetSpecialFolderIcon(aPathInfo.localFile, CSIDL_PERSONAL,
+ aPathInfo.infoFlags, aIcon)) {
+ return NS_OK;
+ }
+
+ // 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.
+ SHFILEINFOW sfi = {};
+ if (::SHGetFileInfoW(aPathInfo.filePath.get(), FILE_ATTRIBUTE_ARCHIVE, &sfi,
+ sizeof(sfi), aPathInfo.infoFlags) != 0) {
+ *aIcon = sfi.hIcon;
+ return NS_OK;
+ }
+
+ return NS_ERROR_NOT_AVAILABLE;
+}
+
+// Match stock icons with names
+static mozilla::Maybe<SHSTOCKICONID> GetStockIconIDForName(
+ const nsACString& aStockName) {
+ return aStockName.EqualsLiteral("uac-shield") ? Some(SIID_SHIELD) : Nothing();
+}
+
+// Specific to Vista and above
+static nsresult GetStockHIcon(nsIMozIconURI* aIconURI, HICON* aIcon) {
+ uint32_t desiredImageSize;
+ aIconURI->GetImageSize(&desiredImageSize);
+ nsAutoCString stockIcon;
+ aIconURI->GetStockIcon(stockIcon);
+
+ Maybe<SHSTOCKICONID> stockIconID = GetStockIconIDForName(stockIcon);
+ if (stockIconID.isNothing()) {
+ return NS_ERROR_NOT_AVAILABLE;
+ }
+
+ UINT infoFlags = SHGSI_ICON;
+ infoFlags |= GetSizeInfoFlag(desiredImageSize);
+
+ SHSTOCKICONINFO sii = {0};
+ sii.cbSize = sizeof(sii);
+ HRESULT hr = SHGetStockIconInfo(*stockIconID, infoFlags, &sii);
+ if (FAILED(hr)) {
+ return NS_ERROR_FAILURE;
+ }
+
+ *aIcon = sii.hIcon;
+
+ return NS_OK;
+}
+
+// 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;
+}
+
+static nsresult MakeIconBuffer(HICON aIcon, ByteBuf* aOutBuffer) {
+ nsresult rv = NS_ERROR_FAILURE;
+
+ if (aIcon) {
+ // we got a handle to an icon. Now we want to get a bitmap for the icon
+ // using GetIconInfo....
+ ICONINFO iconInfo;
+ if (GetIconInfo(aIcon, &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;
+
+ if (!aOutBuffer->Allocate(iconSize)) {
+ rv = NS_ERROR_OUT_OF_MEMORY;
+ } else {
+ uint8_t* whereTo = aOutBuffer->mData;
+ 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)) {
+ rv = NS_OK;
+ } // 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(aIcon);
+ } // if we got an hIcon
+
+ return rv;
+}
+
+static nsresult GetIconHandleFromURLBlocking(nsIMozIconURI* aUrl,
+ HICON* aIcon) {
+ nsAutoCString stockIcon;
+ aUrl->GetStockIcon(stockIcon);
+ if (!stockIcon.IsEmpty()) {
+ return GetStockHIcon(aUrl, aIcon);
+ }
+
+ IconPathInfo iconPathInfo;
+ nsresult rv = ExtractIconPathInfoFromUrl(aUrl, &iconPathInfo);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ nsCOMPtr<nsIRunnable> task = NS_NewRunnableFunction(
+ "GetIconHandleFromURLBlocking",
+ [&] { rv = GetIconHandleFromPathInfo(iconPathInfo, aIcon); });
+
+ RefPtr<nsIEventTarget> target = DecodePool::Singleton()->GetIOEventTarget();
+
+ nsresult dispatchResult = SyncRunnable::DispatchToThread(target, task);
+ NS_ENSURE_SUCCESS(dispatchResult, dispatchResult);
+
+ return rv;
+}
+
+static RefPtr<HIconPromise> GetIconHandleFromURLAsync(nsIMozIconURI* aUrl) {
+ RefPtr<HIconPromise::Private> promise = new HIconPromise::Private(__func__);
+
+ nsAutoCString stockIcon;
+ aUrl->GetStockIcon(stockIcon);
+ if (!stockIcon.IsEmpty()) {
+ HICON hIcon = nullptr;
+ nsresult rv = GetStockHIcon(aUrl, &hIcon);
+ if (NS_SUCCEEDED(rv)) {
+ promise->Resolve(hIcon, __func__);
+ } else {
+ promise->Reject(rv, __func__);
+ }
+ return promise;
+ }
+
+ IconPathInfo iconPathInfo;
+ nsresult rv = ExtractIconPathInfoFromUrl(aUrl, &iconPathInfo);
+ if (NS_FAILED(rv)) {
+ promise->Reject(rv, __func__);
+ return promise;
+ }
+
+ nsCOMPtr<nsIRunnable> task = NS_NewRunnableFunction(
+ "GetIconHandleFromURLAsync", [iconPathInfo, promise] {
+ HICON hIcon = nullptr;
+ nsresult rv = GetIconHandleFromPathInfo(iconPathInfo, &hIcon);
+ if (NS_SUCCEEDED(rv)) {
+ promise->Resolve(hIcon, __func__);
+ } else {
+ promise->Reject(rv, __func__);
+ }
+ });
+
+ RefPtr<nsIEventTarget> target = DecodePool::Singleton()->GetIOEventTarget();
+
+ rv = target->Dispatch(task.forget(), NS_DISPATCH_NORMAL);
+ if (NS_FAILED(rv)) {
+ promise->Reject(rv, __func__);
+ }
+
+ return promise;
+}
+
+static RefPtr<nsIconChannel::ByteBufPromise> GetIconBufferFromURLAsync(
+ nsIMozIconURI* aUrl) {
+ RefPtr<nsIconChannel::ByteBufPromise::Private> promise =
+ new nsIconChannel::ByteBufPromise::Private(__func__);
+
+ GetIconHandleFromURLAsync(aUrl)->Then(
+ GetCurrentSerialEventTarget(), __func__,
+ [promise](HICON aIcon) {
+ ByteBuf iconBuffer;
+ nsresult rv = MakeIconBuffer(aIcon, &iconBuffer);
+ if (NS_SUCCEEDED(rv)) {
+ promise->Resolve(std::move(iconBuffer), __func__);
+ } else {
+ promise->Reject(rv, __func__);
+ }
+ },
+ [promise](nsresult rv) { promise->Reject(rv, __func__); });
+
+ return promise;
+}
+
+static nsresult WriteByteBufToOutputStream(const ByteBuf& aBuffer,
+ nsIAsyncOutputStream* aStream) {
+ uint32_t written = 0;
+ nsresult rv = aStream->Write(reinterpret_cast<const char*>(aBuffer.mData),
+ aBuffer.mLen, &written);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ return (written == aBuffer.mLen) ? NS_OK : NS_ERROR_UNEXPECTED;
+}
+
+NS_IMPL_ISUPPORTS(nsIconChannel, nsIChannel, nsIRequest, nsIRequestObserver,
+ nsIStreamListener)
+
+// nsIconChannel methods
+nsIconChannel::nsIconChannel() {}
+
+nsIconChannel::~nsIconChannel() {
+ if (mLoadInfo) {
+ NS_ReleaseOnMainThread("nsIconChannel::mLoadInfo", mLoadInfo.forget());
+ }
+ if (mLoadGroup) {
+ NS_ReleaseOnMainThread("nsIconChannel::mLoadGroup", mLoadGroup.forget());
+ }
+}
+
+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::SetCanceledReason(const nsACString& aReason) {
+ return SetCanceledReasonImpl(aReason);
+}
+
+NS_IMETHODIMP nsIconChannel::GetCanceledReason(nsACString& aReason) {
+ return GetCanceledReasonImpl(aReason);
+}
+
+NS_IMETHODIMP nsIconChannel::CancelWithReason(nsresult aStatus,
+ const nsACString& aReason) {
+ return CancelWithReasonImpl(aStatus, aReason);
+}
+
+NS_IMETHODIMP
+nsIconChannel::Cancel(nsresult status) {
+ mCanceled = true;
+ return mPump->Cancel(status);
+}
+
+NS_IMETHODIMP
+nsIconChannel::GetCanceled(bool* result) {
+ *result = mCanceled;
+ return NS_OK;
+}
+
+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);
+}
+
+NS_IMETHODIMP
+nsIconChannel::GetTRRMode(nsIRequest::TRRMode* aTRRMode) {
+ return GetTRRModeImpl(aTRRMode);
+}
+
+NS_IMETHODIMP
+nsIconChannel::SetTRRMode(nsIRequest::TRRMode aTRRMode) {
+ return SetTRRModeImpl(aTRRMode);
+}
+
+NS_IMETHODIMP
+nsIconChannel::GetIsDocument(bool* aIsDocument) {
+ return NS_GetIsDocumentChannel(this, aIsDocument);
+}
+
+////////////////////////////////////////////////////////////////////////////////
+// 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;
+}
+
+// static
+RefPtr<nsIconChannel::ByteBufPromise> nsIconChannel::GetIconAsync(
+ nsIURI* aURI) {
+ MOZ_ASSERT(XRE_IsParentProcess());
+
+ nsresult rv = NS_OK;
+ nsCOMPtr<nsIMozIconURI> iconURI(do_QueryInterface(aURI, &rv));
+ if (NS_FAILED(rv)) {
+ return ByteBufPromise::CreateAndReject(rv, __func__);
+ }
+
+ return GetIconBufferFromURLAsync(iconURI);
+}
+
+NS_IMETHODIMP
+nsIconChannel::Open(nsIInputStream** aStream) {
+ nsCOMPtr<nsIStreamListener> listener;
+ nsresult rv =
+ nsContentSecurityManager::doContentSecurityCheck(this, listener);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ MOZ_ASSERT(
+ mLoadInfo->GetSecurityMode() == 0 ||
+ mLoadInfo->GetInitialSecurityCheckDone() ||
+ (mLoadInfo->GetSecurityMode() ==
+ nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL &&
+ mLoadInfo->GetLoadingPrincipal() &&
+ mLoadInfo->GetLoadingPrincipal()->IsSystemPrincipal()),
+ "security flags in loadInfo but doContentSecurityCheck() not called");
+
+ // Double-check that we are actually an icon URL
+ nsCOMPtr<nsIMozIconURI> iconURI(do_QueryInterface(mUrl, &rv));
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Get the handle for the given icon URI. This may involve the decode I/O
+ // thread, as we can only call SHGetFileInfo() from that thread
+ //
+ // Since this API is synchronous, this call will not return until the decode
+ // I/O thread returns with the icon handle
+ //
+ // Once we have the handle, we create a Windows ICO buffer with it and
+ // dump the buffer into the output end of the pipe. The input end will
+ // be returned to the caller
+ HICON hIcon = nullptr;
+ rv = GetIconHandleFromURLBlocking(iconURI, &hIcon);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ ByteBuf iconBuffer;
+ rv = MakeIconBuffer(hIcon, &iconBuffer);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Create the asynchronous pipe with a blocking read end
+ nsCOMPtr<nsIAsyncInputStream> inputStream;
+ nsCOMPtr<nsIAsyncOutputStream> outputStream;
+ NS_NewPipe2(getter_AddRefs(inputStream), getter_AddRefs(outputStream),
+ false /*nonBlockingInput*/, false /*nonBlockingOutput*/,
+ iconBuffer.mLen /*segmentSize*/, 1 /*segmentCount*/);
+
+ rv = WriteByteBufToOutputStream(iconBuffer, outputStream);
+
+ if (NS_SUCCEEDED(rv)) {
+ inputStream.forget(aStream);
+ }
+
+ return rv;
+}
+
+NS_IMETHODIMP
+nsIconChannel::AsyncOpen(nsIStreamListener* aListener) {
+ nsCOMPtr<nsIStreamListener> listener = aListener;
+ nsresult rv =
+ nsContentSecurityManager::doContentSecurityCheck(this, listener);
+ if (NS_FAILED(rv)) {
+ mCallbacks = nullptr;
+ return rv;
+ }
+
+ MOZ_ASSERT(
+ mLoadInfo->GetSecurityMode() == 0 ||
+ mLoadInfo->GetInitialSecurityCheckDone() ||
+ (mLoadInfo->GetSecurityMode() ==
+ nsILoadInfo::SEC_ALLOW_CROSS_ORIGIN_SEC_CONTEXT_IS_NULL &&
+ mLoadInfo->GetLoadingPrincipal() &&
+ mLoadInfo->GetLoadingPrincipal()->IsSystemPrincipal()),
+ "security flags in loadInfo but doContentSecurityCheck() not called");
+
+ mListener = listener;
+
+ rv = StartAsyncOpen();
+ if (NS_FAILED(rv)) {
+ mListener = nullptr;
+ mCallbacks = nullptr;
+ return rv;
+ }
+
+ // Add ourself to the load group, if available
+ if (mLoadGroup) {
+ mLoadGroup->AddRequest(this, nullptr);
+ }
+
+ return NS_OK;
+}
+
+nsresult nsIconChannel::StartAsyncOpen() {
+ // Double-check that we are actually an icon URL
+ nsresult rv = NS_OK;
+ nsCOMPtr<nsIMozIconURI> iconURI(do_QueryInterface(mUrl, &rv));
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ // Create the asynchronous pipe with a non-blocking read end
+ nsCOMPtr<nsIAsyncInputStream> inputStream;
+ nsCOMPtr<nsIAsyncOutputStream> outputStream;
+ NS_NewPipe2(getter_AddRefs(inputStream), getter_AddRefs(outputStream),
+ true /*nonBlockingInput*/, false /*nonBlockingOutput*/,
+ 0 /*segmentSize*/, UINT32_MAX /*segmentCount*/);
+
+ // If we are in content, we asynchronously request the ICO buffer from
+ // the parent process because the APIs to load icons don't work with
+ // Win32k Lockdown
+ using ContentChild = mozilla::dom::ContentChild;
+ if (auto* contentChild = ContentChild::GetSingleton()) {
+ RefPtr<ContentChild::GetSystemIconPromise> iconPromise =
+ contentChild->SendGetSystemIcon(mUrl);
+ if (!iconPromise) {
+ return NS_ERROR_UNEXPECTED;
+ }
+
+ iconPromise->Then(
+ mozilla::GetCurrentSerialEventTarget(), __func__,
+ [outputStream](std::tuple<nsresult, mozilla::Maybe<ByteBuf>>&& aArg) {
+ nsresult rv = std::get<0>(aArg);
+ mozilla::Maybe<ByteBuf> iconBuffer = std::move(std::get<1>(aArg));
+
+ if (NS_SUCCEEDED(rv)) {
+ MOZ_RELEASE_ASSERT(iconBuffer);
+ rv = WriteByteBufToOutputStream(*iconBuffer, outputStream);
+ }
+
+ outputStream->CloseWithStatus(rv);
+ },
+ [outputStream](mozilla::ipc::ResponseRejectReason) {
+ outputStream->CloseWithStatus(NS_ERROR_FAILURE);
+ });
+ } else {
+ // Get the handle for the given icon URI. This may involve the decode I/O
+ // thread, as we can only call SHGetFileInfo() from that thread
+ //
+ // Once we have the handle, we create a Windows ICO buffer with it and
+ // dump the buffer into the output end of the pipe. The input end will be
+ // pumped to our attached nsIStreamListener
+ GetIconBufferFromURLAsync(iconURI)->Then(
+ GetCurrentSerialEventTarget(), __func__,
+ [outputStream](ByteBuf aIconBuffer) {
+ nsresult rv =
+ WriteByteBufToOutputStream(std::move(aIconBuffer), outputStream);
+ outputStream->CloseWithStatus(rv);
+ },
+ [outputStream](nsresult rv) { outputStream->CloseWithStatus(rv); });
+ }
+
+ rv = mPump->Init(inputStream.get(), 0 /*segmentSize*/, 0 /*segmentCount*/,
+ false /*closeWhenDone*/, GetMainThreadSerialEventTarget());
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ return mPump->AsyncRead(this);
+}
+
+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) {
+ MOZ_ASSERT_UNREACHABLE("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) {
+ MOZ_RELEASE_ASSERT(aLoadInfo, "loadinfo can't be null");
+ 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(nsITransportSecurityInfo** aSecurityInfo) {
+ *aSecurityInfo = nullptr;
+ return NS_OK;
+}
+
+// nsIRequestObserver methods
+NS_IMETHODIMP nsIconChannel::OnStartRequest(nsIRequest* aRequest) {
+ if (mListener) {
+ return mListener->OnStartRequest(this);
+ }
+ return NS_OK;
+}
+
+NS_IMETHODIMP
+nsIconChannel::OnStopRequest(nsIRequest* aRequest, nsresult aStatus) {
+ if (mListener) {
+ mListener->OnStopRequest(this, 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, nsIInputStream* aStream,
+ uint64_t aOffset, uint32_t aCount) {
+ if (mListener) {
+ return mListener->OnDataAvailable(this, aStream, aOffset, aCount);
+ }
+ return NS_OK;
+}