mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
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325 lines
10 KiB
C++
325 lines
10 KiB
C++
/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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// vim:cindent:ts=2:et:sw=2:
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/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is Mozilla Foundation code.
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*
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* The Initial Developer of the Original Code is
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* Mozilla Foundation.
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* Portions created by the Initial Developer are Copyright (C) 2008
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* John Daggett <jdaggett@mozilla.com>
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either of the GNU General Public License Version 2 or later (the "GPL"),
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* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/* code for loading in @font-face defined font data */
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#ifdef MOZ_LOGGING
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#define FORCE_PR_LOG /* Allow logging in the release build */
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#endif /* MOZ_LOGGING */
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#include "prlog.h"
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#include "nsFontFaceLoader.h"
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#include "nsError.h"
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#include "nsIFile.h"
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#include "nsILocalFile.h"
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#include "nsIStreamListener.h"
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#include "nsNetUtil.h"
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#include "nsIChannelEventSink.h"
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#include "nsIInterfaceRequestor.h"
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#include "nsContentUtils.h"
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#include "nsPresContext.h"
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#include "nsIPresShell.h"
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#include "nsIDocument.h"
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#include "nsIFrame.h"
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#include "nsIPrincipal.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsDirectoryServiceUtils.h"
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#include "nsDirectoryServiceDefs.h"
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#include "nsIContentPolicy.h"
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#include "nsContentPolicyUtils.h"
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#include "nsContentErrors.h"
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#include "nsCrossSiteListenerProxy.h"
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#ifdef PR_LOGGING
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static PRLogModuleInfo *gFontDownloaderLog = PR_NewLogModule("fontdownloader");
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#endif /* PR_LOGGING */
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#define LOG(args) PR_LOG(gFontDownloaderLog, PR_LOG_DEBUG, args)
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#define LOG_ENABLED() PR_LOG_TEST(gFontDownloaderLog, PR_LOG_DEBUG)
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nsFontFaceLoader::nsFontFaceLoader(gfxFontEntry *aFontToLoad, nsIURI *aFontURI,
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nsUserFontSet *aFontSet, nsIChannel *aChannel)
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: mFontEntry(aFontToLoad), mFontURI(aFontURI), mFontSet(aFontSet),
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mChannel(aChannel)
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{
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}
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nsFontFaceLoader::~nsFontFaceLoader()
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{
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if (mFontSet) {
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mFontSet->RemoveLoader(this);
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}
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}
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NS_IMPL_ISUPPORTS1(nsFontFaceLoader, nsIStreamLoaderObserver)
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NS_IMETHODIMP
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nsFontFaceLoader::OnStreamComplete(nsIStreamLoader* aLoader,
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nsISupports* aContext,
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nsresult aStatus,
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PRUint32 aStringLen,
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const PRUint8* aString)
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{
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if (!mFontSet) {
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// We've been canceled
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return aStatus;
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}
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mFontSet->RemoveLoader(this);
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#ifdef PR_LOGGING
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if (LOG_ENABLED()) {
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nsCAutoString fontURI;
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mFontURI->GetSpec(fontURI);
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if (NS_SUCCEEDED(aStatus)) {
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LOG(("fontdownloader (%p) download completed - font uri: (%s)\n",
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this, fontURI.get()));
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} else {
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LOG(("fontdownloader (%p) download failed - font uri: (%s) error: %8.8x\n",
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this, fontURI.get(), aStatus));
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}
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}
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#endif
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nsPresContext *ctx = mFontSet->GetPresContext();
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NS_ASSERTION(ctx && !ctx->PresShell()->IsDestroying(),
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"We should have been canceled already");
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// whether an error occurred or not, notify the user font set of the completion
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gfxUserFontSet *userFontSet = ctx->GetUserFontSet();
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if (!userFontSet) {
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return aStatus;
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}
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PRBool fontUpdate = userFontSet->OnLoadComplete(mFontEntry, aLoader,
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aString, aStringLen,
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aStatus);
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// when new font loaded, need to reflow
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if (fontUpdate) {
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// Update layout for the presence of the new font. Since this is
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// asynchronous, reflows will coalesce.
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ctx->UserFontSetUpdated();
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LOG(("fontdownloader (%p) reflow\n", this));
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}
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return aStatus;
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}
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void
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nsFontFaceLoader::Cancel()
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{
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mFontSet = nsnull;
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mChannel->Cancel(NS_BINDING_ABORTED);
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}
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nsresult
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nsFontFaceLoader::CheckLoadAllowed(nsIPrincipal* aSourcePrincipal,
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nsIURI* aTargetURI,
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nsISupports* aContext)
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{
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nsresult rv;
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if (!aSourcePrincipal)
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return NS_OK;
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// check content policy
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PRInt16 shouldLoad = nsIContentPolicy::ACCEPT;
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rv = NS_CheckContentLoadPolicy(nsIContentPolicy::TYPE_FONT,
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aTargetURI,
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aSourcePrincipal,
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aContext,
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EmptyCString(), // mime type
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nsnull,
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&shouldLoad,
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nsContentUtils::GetContentPolicy(),
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nsContentUtils::GetSecurityManager());
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if (NS_FAILED(rv) || NS_CP_REJECTED(shouldLoad)) {
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return NS_ERROR_CONTENT_BLOCKED;
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}
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return NS_OK;
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}
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nsUserFontSet::nsUserFontSet(nsPresContext *aContext)
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: mPresContext(aContext)
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{
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NS_ASSERTION(mPresContext, "null context passed to nsUserFontSet");
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mLoaders.Init();
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}
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nsUserFontSet::~nsUserFontSet()
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{
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NS_ASSERTION(mLoaders.Count() == 0, "mLoaders should have been emptied");
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}
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static PLDHashOperator DestroyIterator(nsPtrHashKey<nsFontFaceLoader>* aKey,
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void* aUserArg)
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{
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aKey->GetKey()->Cancel();
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return PL_DHASH_REMOVE;
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}
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void
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nsUserFontSet::Destroy()
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{
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mPresContext = nsnull;
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mLoaders.EnumerateEntries(DestroyIterator, nsnull);
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}
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void
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nsUserFontSet::RemoveLoader(nsFontFaceLoader *aLoader)
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{
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mLoaders.RemoveEntry(aLoader);
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}
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nsresult
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nsUserFontSet::StartLoad(gfxFontEntry *aFontToLoad,
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const gfxFontFaceSrc *aFontFaceSrc)
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{
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nsresult rv;
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// check same-site origin
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nsIPresShell *ps = mPresContext->PresShell();
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if (!ps)
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return NS_ERROR_FAILURE;
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NS_ASSERTION(aFontFaceSrc && !aFontFaceSrc->mIsLocal,
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"bad font face url passed to fontloader");
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NS_ASSERTION(aFontFaceSrc->mURI, "null font uri");
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if (!aFontFaceSrc->mURI)
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return NS_ERROR_FAILURE;
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// use document principal, original principal if flag set
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// this enables user stylesheets to load font files via
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// @font-face rules
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nsCOMPtr<nsIPrincipal> principal = ps->GetDocument()->NodePrincipal();
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NS_ASSERTION(aFontFaceSrc->mOriginPrincipal,
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"null origin principal in @font-face rule");
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if (aFontFaceSrc->mUseOriginPrincipal) {
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principal = do_QueryInterface(aFontFaceSrc->mOriginPrincipal);
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}
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rv = nsFontFaceLoader::CheckLoadAllowed(principal, aFontFaceSrc->mURI,
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ps->GetDocument());
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if (NS_FAILED(rv)) {
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#ifdef PR_LOGGING
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if (LOG_ENABLED()) {
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nsCAutoString fontURI, referrerURI;
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aFontFaceSrc->mURI->GetSpec(fontURI);
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if (aFontFaceSrc->mReferrer)
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aFontFaceSrc->mReferrer->GetSpec(referrerURI);
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LOG(("fontdownloader download blocked - font uri: (%s) "
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"referrer uri: (%s) err: %8.8x\n",
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fontURI.get(), referrerURI.get(), rv));
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}
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#endif
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return rv;
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}
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nsCOMPtr<nsIStreamLoader> streamLoader;
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nsCOMPtr<nsILoadGroup> loadGroup(ps->GetDocument()->GetDocumentLoadGroup());
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nsCOMPtr<nsIChannel> channel;
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rv = NS_NewChannel(getter_AddRefs(channel),
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aFontFaceSrc->mURI,
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nsnull,
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loadGroup,
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nsnull,
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nsIRequest::LOAD_NORMAL);
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NS_ENSURE_SUCCESS(rv, rv);
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nsRefPtr<nsFontFaceLoader> fontLoader =
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new nsFontFaceLoader(aFontToLoad, aFontFaceSrc->mURI, this, channel);
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if (!fontLoader)
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return NS_ERROR_OUT_OF_MEMORY;
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#ifdef PR_LOGGING
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if (LOG_ENABLED()) {
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nsCAutoString fontURI, referrerURI;
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aFontFaceSrc->mURI->GetSpec(fontURI);
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if (aFontFaceSrc->mReferrer)
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aFontFaceSrc->mReferrer->GetSpec(referrerURI);
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LOG(("fontdownloader (%p) download start - font uri: (%s) "
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"referrer uri: (%s)\n",
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fontLoader.get(), fontURI.get(), referrerURI.get()));
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}
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#endif
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nsCOMPtr<nsIHttpChannel> httpChannel(do_QueryInterface(channel));
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if (httpChannel)
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httpChannel->SetReferrer(aFontFaceSrc->mReferrer);
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rv = NS_NewStreamLoader(getter_AddRefs(streamLoader), fontLoader);
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NS_ENSURE_SUCCESS(rv, rv);
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PRBool inherits = PR_FALSE;
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rv = NS_URIChainHasFlags(aFontFaceSrc->mURI,
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nsIProtocolHandler::URI_INHERITS_SECURITY_CONTEXT,
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&inherits);
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if (NS_SUCCEEDED(rv) && inherits) {
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// allow data, javascript, etc URI's
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rv = channel->AsyncOpen(streamLoader, nsnull);
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} else {
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nsCOMPtr<nsIStreamListener> listener =
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new nsCrossSiteListenerProxy(streamLoader, principal, channel,
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PR_FALSE, &rv);
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if (NS_FAILED(rv)) {
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fontLoader->DropChannel(); // explicitly need to break ref cycle
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}
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NS_ENSURE_TRUE(listener, NS_ERROR_OUT_OF_MEMORY);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = channel->AsyncOpen(listener, nsnull);
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}
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if (NS_SUCCEEDED(rv)) {
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mLoaders.PutEntry(fontLoader);
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}
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return rv;
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}
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