diff options
Diffstat (limited to 'image/decoders/icon/mac/nsIconChannelCocoa.mm')
| -rw-r--r-- | image/decoders/icon/mac/nsIconChannelCocoa.mm | 565 |
1 files changed, 565 insertions, 0 deletions
diff --git a/image/decoders/icon/mac/nsIconChannelCocoa.mm b/image/decoders/icon/mac/nsIconChannelCocoa.mm new file mode 100644 index 0000000000..9c2686cdd2 --- /dev/null +++ b/image/decoders/icon/mac/nsIconChannelCocoa.mm @@ -0,0 +1,565 @@ +/* -*- 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 "nsContentUtils.h" +#include "nsIconChannel.h" +#include "mozilla/EndianUtils.h" +#include "nsIIconURI.h" +#include "nsIServiceManager.h" +#include "nsIInterfaceRequestor.h" +#include "nsIInterfaceRequestorUtils.h" +#include "nsXPIDLString.h" +#include "nsMimeTypes.h" +#include "nsMemory.h" +#include "nsIStringStream.h" +#include "nsIURL.h" +#include "nsNetCID.h" +#include "nsIPipe.h" +#include "nsIOutputStream.h" +#include "nsIMIMEService.h" +#include "nsCExternalHandlerService.h" +#include "nsILocalFileMac.h" +#include "nsIFileURL.h" +#include "nsTArray.h" +#include "nsObjCExceptions.h" +#include "nsProxyRelease.h" +#include "nsContentSecurityManager.h" + +#include <Cocoa/Cocoa.h> + +// 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(); +} + +// 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); + } + + 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; +} + +//////////////////////////////////////////////////////////////////////////////// +// 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, + nsACString& aContentType, + nsACString& 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; + + nsCOMPtr<nsILocalFileMac> localFileMac (do_QueryInterface(file, &rv)); + if (NS_FAILED(rv) || !localFileMac) return NS_OK; + + *aLocalFile = file; + NS_IF_ADDREF(*aLocalFile); + + return NS_OK; +} + +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); + NS_ENSURE_SUCCESS(rv, rv); + + // Init our stream pump + rv = mPump->Init(inStream, int64_t(-1), int64_t(-1), 0, 0, false); + NS_ENSURE_SUCCESS(rv, 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); +} + +nsresult +nsIconChannel::MakeInputStream(nsIInputStream** _retval, + bool aNonBlocking) +{ + NS_OBJC_BEGIN_TRY_ABORT_BLOCK_NSRESULT; + + nsXPIDLCString contentType; + nsAutoCString fileExt; + nsCOMPtr<nsIFile> fileloc; // file we want an icon for + uint32_t desiredImageSize; + nsresult rv = ExtractIconInfoFromUrl(getter_AddRefs(fileloc), + &desiredImageSize, contentType, fileExt); + NS_ENSURE_SUCCESS(rv, rv); + + bool fileExists = false; + if (fileloc) { + // ensure that we DO NOT resolve aliases, very important for file views + fileloc->SetFollowLinks(false); + fileloc->Exists(&fileExists); + } + + NSImage* iconImage = nil; + + // first try to get the icon from the file if it exists + if (fileExists) { + nsCOMPtr<nsILocalFileMac> localFileMac(do_QueryInterface(fileloc, &rv)); + NS_ENSURE_SUCCESS(rv, rv); + + CFURLRef macURL; + if (NS_SUCCEEDED(localFileMac->GetCFURL(&macURL))) { + iconImage = [[NSWorkspace sharedWorkspace] + iconForFile:[(NSURL*)macURL path]]; + ::CFRelease(macURL); + } + } + + // if we don't have an icon yet try to get one by extension + if (!iconImage && !fileExt.IsEmpty()) { + NSString* fileExtension = [NSString stringWithUTF8String:fileExt.get()]; + iconImage = [[NSWorkspace sharedWorkspace] iconForFileType:fileExtension]; + } + + // If we still don't have an icon, get the generic document icon. + if (!iconImage) { + iconImage = [[NSWorkspace sharedWorkspace] + iconForFileType:NSFileTypeUnknown]; + } + + if (!iconImage) { + return NS_ERROR_FAILURE; + } + + // we have an icon now, size it + NSRect desiredSizeRect = NSMakeRect(0, 0, desiredImageSize, desiredImageSize); + [iconImage setSize:desiredSizeRect.size]; + + [iconImage lockFocus]; + NSBitmapImageRep* bitmapRep = [[[NSBitmapImageRep alloc] + initWithFocusedViewRect:desiredSizeRect] + autorelease]; + [iconImage unlockFocus]; + + // we expect the following things to be true about our bitmapRep + NS_ENSURE_TRUE(![bitmapRep isPlanar] && + // Not necessarily: on a HiDPI-capable system, we'll get + // a 2x bitmap + // (unsigned int)[bitmapRep bytesPerPlane] == + // desiredImageSize * desiredImageSize * 4 && + [bitmapRep bitsPerPixel] == 32 && + [bitmapRep samplesPerPixel] == 4 && + [bitmapRep hasAlpha] == YES, + NS_ERROR_UNEXPECTED); + + // check what size we actually got, and ensure it isn't too big to return + uint32_t actualImageSize = [bitmapRep bytesPerRow] / 4; + NS_ENSURE_TRUE(actualImageSize < 256, NS_ERROR_UNEXPECTED); + + // now we can validate the amount of data + NS_ENSURE_TRUE((unsigned int)[bitmapRep bytesPerPlane] == + actualImageSize * actualImageSize * 4, + NS_ERROR_UNEXPECTED); + + // rgba, pre-multiplied data + uint8_t* bitmapRepData = (uint8_t*)[bitmapRep bitmapData]; + + // create our buffer + int32_t bufferCapacity = 2 + [bitmapRep bytesPerPlane]; + AutoTArray<uint8_t, 3 + 16 * 16 * 5> iconBuffer; // initial size is for + // 16x16 + iconBuffer.SetLength(bufferCapacity); + + uint8_t* iconBufferPtr = iconBuffer.Elements(); + + // write header data into buffer + *iconBufferPtr++ = actualImageSize; + *iconBufferPtr++ = actualImageSize; + + uint32_t dataCount = [bitmapRep bytesPerPlane]; + uint32_t index = 0; + while (index < dataCount) { + // get data from the bitmap + uint8_t r = bitmapRepData[index++]; + uint8_t g = bitmapRepData[index++]; + uint8_t b = bitmapRepData[index++]; + uint8_t a = bitmapRepData[index++]; + + // write data out to our buffer + // non-cairo uses native image format, but the A channel is ignored. + // cairo uses ARGB (highest to lowest bits) +#if MOZ_LITTLE_ENDIAN + *iconBufferPtr++ = b; + *iconBufferPtr++ = g; + *iconBufferPtr++ = r; + *iconBufferPtr++ = a; +#else + *iconBufferPtr++ = a; + *iconBufferPtr++ = r; + *iconBufferPtr++ = g; + *iconBufferPtr++ = b; +#endif + } + + NS_ASSERTION(iconBufferPtr == iconBuffer.Elements() + bufferCapacity, + "buffer size miscalculation"); + + // 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), + bufferCapacity, bufferCapacity, aNonBlocking); + + if (NS_SUCCEEDED(rv)) { + uint32_t written; + rv = outStream->Write((char*)iconBuffer.Elements(), bufferCapacity, + &written); + if (NS_SUCCEEDED(rv)) { + NS_IF_ADDREF(*_retval = inStream); + } + } + + // Drop notification callbacks to prevent cycles. + mCallbacks = nullptr; + + return NS_OK; + + NS_OBJC_END_TRY_ABORT_BLOCK_NSRESULT; +} + +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::GetContentType(nsACString& aContentType) +{ + aContentType.AssignLiteral(IMAGE_ICON_MS); + 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.AssignLiteral(IMAGE_ICON_MS); + return NS_OK; +} + +NS_IMETHODIMP +nsIconChannel::SetContentCharset(const nsACString& aContentCharset) +{ + //It doesn't make sense to set the content-type 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::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::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; +} + |