mirror of
https://gitlab.winehq.org/wine/wine-gecko.git
synced 2024-09-13 09:24:08 -07:00
0fd9123eac
This patch was generated by a script. Here's the source of the script for future reference: function convert() { echo "Converting $1 to $2..." find . ! -wholename "*nsprpub*" \ ! -wholename "*security/nss*" \ ! -wholename "*/.hg*" \ ! -wholename "obj-ff-dbg*" \ ! -name nsXPCOMCID.h \ ! -name prtypes.h \ -type f \ \( -iname "*.cpp" \ -o -iname "*.h" \ -o -iname "*.c" \ -o -iname "*.cc" \ -o -iname "*.idl" \ -o -iname "*.ipdl" \ -o -iname "*.ipdlh" \ -o -iname "*.mm" \) | \ xargs -n 1 sed -i -e "s/\b$1\b/$2/g" } convert PRInt8 int8_t convert PRUint8 uint8_t convert PRInt16 int16_t convert PRUint16 uint16_t convert PRInt32 int32_t convert PRUint32 uint32_t convert PRInt64 int64_t convert PRUint64 uint64_t convert PRIntn int convert PRUintn unsigned convert PRSize size_t convert PROffset32 int32_t convert PROffset64 int64_t convert PRPtrdiff ptrdiff_t convert PRFloat64 double
774 lines
26 KiB
C++
774 lines
26 KiB
C++
/* -*- Mode: C++; tab-width: 20; indent-tabs-mode: nil; c-basic-offset: 4 -*-
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* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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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 "gfxUserFontSet.h"
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#include "gfxPlatform.h"
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#include "nsReadableUtils.h"
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#include "nsUnicharUtils.h"
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#include "prlong.h"
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#include "nsNetUtil.h"
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#include "nsIProtocolHandler.h"
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#include "woff.h"
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#include "opentype-sanitiser.h"
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#include "ots-memory-stream.h"
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using namespace mozilla;
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#ifdef PR_LOGGING
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PRLogModuleInfo *gfxUserFontSet::sUserFontsLog = PR_NewLogModule("userfonts");
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#endif /* PR_LOGGING */
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#define LOG(args) PR_LOG(sUserFontsLog, PR_LOG_DEBUG, args)
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#define LOG_ENABLED() PR_LOG_TEST(sUserFontsLog, PR_LOG_DEBUG)
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static uint64_t sFontSetGeneration = LL_INIT(0, 0);
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// TODO: support for unicode ranges not yet implemented
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gfxProxyFontEntry::gfxProxyFontEntry(const nsTArray<gfxFontFaceSrc>& aFontFaceSrcList,
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gfxMixedFontFamily *aFamily,
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uint32_t aWeight,
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uint32_t aStretch,
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uint32_t aItalicStyle,
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const nsTArray<gfxFontFeature>& aFeatureSettings,
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uint32_t aLanguageOverride,
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gfxSparseBitSet *aUnicodeRanges)
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: gfxFontEntry(NS_LITERAL_STRING("Proxy"), aFamily),
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mLoadingState(NOT_LOADING),
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mUnsupportedFormat(false),
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mLoader(nullptr)
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{
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mIsProxy = true;
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mSrcList = aFontFaceSrcList;
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mSrcIndex = 0;
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mWeight = aWeight;
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mStretch = aStretch;
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mItalic = (aItalicStyle & (NS_FONT_STYLE_ITALIC | NS_FONT_STYLE_OBLIQUE)) != 0;
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mFeatureSettings.AppendElements(aFeatureSettings);
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mLanguageOverride = aLanguageOverride;
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mIsUserFont = true;
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}
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gfxProxyFontEntry::~gfxProxyFontEntry()
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{
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}
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gfxFont*
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gfxProxyFontEntry::CreateFontInstance(const gfxFontStyle *aFontStyle, bool aNeedsBold)
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{
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// cannot create an actual font for a proxy entry
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return nullptr;
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}
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gfxUserFontSet::gfxUserFontSet()
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{
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mFontFamilies.Init(5);
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IncrementGeneration();
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}
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gfxUserFontSet::~gfxUserFontSet()
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{
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}
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gfxFontEntry*
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gfxUserFontSet::AddFontFace(const nsAString& aFamilyName,
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const nsTArray<gfxFontFaceSrc>& aFontFaceSrcList,
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uint32_t aWeight,
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uint32_t aStretch,
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uint32_t aItalicStyle,
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const nsTArray<gfxFontFeature>& aFeatureSettings,
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const nsString& aLanguageOverride,
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gfxSparseBitSet *aUnicodeRanges)
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{
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gfxProxyFontEntry *proxyEntry = nullptr;
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nsAutoString key(aFamilyName);
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ToLowerCase(key);
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bool found;
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if (aWeight == 0)
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aWeight = NS_FONT_WEIGHT_NORMAL;
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// stretch, italic/oblique ==> zero implies normal
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gfxMixedFontFamily *family = mFontFamilies.GetWeak(key, &found);
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if (!family) {
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family = new gfxMixedFontFamily(aFamilyName);
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mFontFamilies.Put(key, family);
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}
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// construct a new face and add it into the family
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uint32_t languageOverride =
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gfxFontStyle::ParseFontLanguageOverride(aLanguageOverride);
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proxyEntry =
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new gfxProxyFontEntry(aFontFaceSrcList, family, aWeight, aStretch,
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aItalicStyle,
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aFeatureSettings,
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languageOverride,
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aUnicodeRanges);
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family->AddFontEntry(proxyEntry);
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#ifdef PR_LOGGING
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if (LOG_ENABLED()) {
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LOG(("userfonts (%p) added (%s) with style: %s weight: %d stretch: %d",
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this, NS_ConvertUTF16toUTF8(aFamilyName).get(),
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(aItalicStyle & NS_FONT_STYLE_ITALIC ? "italic" :
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(aItalicStyle & NS_FONT_STYLE_OBLIQUE ? "oblique" : "normal")),
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aWeight, aStretch));
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}
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#endif
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return proxyEntry;
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}
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void
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gfxUserFontSet::AddFontFace(const nsAString& aFamilyName,
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gfxFontEntry *aFontEntry)
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{
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nsAutoString key(aFamilyName);
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ToLowerCase(key);
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bool found;
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gfxMixedFontFamily *family = mFontFamilies.GetWeak(key, &found);
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if (!family) {
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family = new gfxMixedFontFamily(aFamilyName);
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mFontFamilies.Put(key, family);
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}
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family->AddFontEntry(aFontEntry);
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}
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gfxFontEntry*
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gfxUserFontSet::FindFontEntry(const nsAString& aName,
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const gfxFontStyle& aFontStyle,
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bool& aFoundFamily,
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bool& aNeedsBold,
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bool& aWaitForUserFont)
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{
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aWaitForUserFont = false;
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gfxMixedFontFamily *family = GetFamily(aName);
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// no user font defined for this name
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if (!family) {
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aFoundFamily = false;
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return nullptr;
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}
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aFoundFamily = true;
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gfxFontEntry* fe = family->FindFontForStyle(aFontStyle, aNeedsBold);
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// if not a proxy, font has already been loaded
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if (!fe->mIsProxy) {
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return fe;
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}
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gfxProxyFontEntry *proxyEntry = static_cast<gfxProxyFontEntry*> (fe);
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// if currently loading, return null for now
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if (proxyEntry->mLoadingState > gfxProxyFontEntry::NOT_LOADING) {
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aWaitForUserFont =
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(proxyEntry->mLoadingState < gfxProxyFontEntry::LOADING_SLOWLY);
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return nullptr;
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}
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// hasn't been loaded yet, start the load process
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LoadStatus status;
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// NOTE that if all sources in the entry fail, this will delete proxyEntry,
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// so we cannot use it again if status==STATUS_END_OF_LIST
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status = LoadNext(proxyEntry);
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// if the load succeeded immediately, the font entry was replaced so
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// search again
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if (status == STATUS_LOADED) {
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return family->FindFontForStyle(aFontStyle, aNeedsBold);
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}
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// check whether we should wait for load to complete before painting
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// a fallback font -- but not if all sources failed (bug 633500)
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aWaitForUserFont = (status != STATUS_END_OF_LIST) &&
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(proxyEntry->mLoadingState < gfxProxyFontEntry::LOADING_SLOWLY);
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// if either loading or an error occurred, return null
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return nullptr;
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}
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// Given a buffer of downloaded font data, do any necessary preparation
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// to make it into usable OpenType.
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// May return the original pointer unchanged, or a newly-allocated
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// block (in which case the passed-in block is NS_Free'd).
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// aLength is updated if necessary to the new length of the data.
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// Returns NULL and NS_Free's the incoming data in case of errors.
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static const uint8_t*
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PrepareOpenTypeData(const uint8_t* aData, uint32_t* aLength)
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{
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switch(gfxFontUtils::DetermineFontDataType(aData, *aLength)) {
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case GFX_USERFONT_OPENTYPE:
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// nothing to do
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return aData;
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case GFX_USERFONT_WOFF: {
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uint32_t status = eWOFF_ok;
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uint32_t bufferSize = woffGetDecodedSize(aData, *aLength, &status);
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if (WOFF_FAILURE(status)) {
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break;
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}
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uint8_t* decodedData = static_cast<uint8_t*>(NS_Alloc(bufferSize));
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if (!decodedData) {
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break;
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}
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woffDecodeToBuffer(aData, *aLength,
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decodedData, bufferSize,
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aLength, &status);
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// replace original data with the decoded version
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NS_Free((void*)aData);
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aData = decodedData;
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if (WOFF_FAILURE(status)) {
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// something went wrong, discard the data and return NULL
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break;
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}
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// success, return the decoded data
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return aData;
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}
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// xxx - add support for other wrappers here
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default:
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NS_WARNING("unknown font format");
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break;
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}
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// discard downloaded data that couldn't be used
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NS_Free((void*)aData);
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return nullptr;
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}
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// Based on ots::ExpandingMemoryStream from ots-memory-stream.h,
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// adapted to use Mozilla allocators and to allow the final
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// memory buffer to be adopted by the client.
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class ExpandingMemoryStream : public ots::OTSStream {
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public:
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ExpandingMemoryStream(size_t initial, size_t limit)
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: mLength(initial), mLimit(limit), mOff(0) {
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mPtr = NS_Alloc(mLength);
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}
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~ExpandingMemoryStream() {
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NS_Free(mPtr);
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}
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// return the buffer, and give up ownership of it
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// so the caller becomes responsible to call NS_Free
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// when finished with it
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void* forget() {
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void* p = mPtr;
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mPtr = nullptr;
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return p;
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}
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bool WriteRaw(const void *data, size_t length) {
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if ((mOff + length > mLength) ||
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(mLength > std::numeric_limits<size_t>::max() - mOff)) {
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if (mLength == mLimit) {
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return false;
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}
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size_t newLength = (mLength + 1) * 2;
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if (newLength < mLength) {
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return false;
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}
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if (newLength > mLimit) {
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newLength = mLimit;
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}
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mPtr = NS_Realloc(mPtr, newLength);
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mLength = newLength;
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return WriteRaw(data, length);
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}
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std::memcpy(static_cast<char*>(mPtr) + mOff, data, length);
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mOff += length;
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return true;
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}
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bool Seek(off_t position) {
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if (position < 0) {
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return false;
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}
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if (static_cast<size_t>(position) > mLength) {
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return false;
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}
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mOff = position;
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return true;
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}
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off_t Tell() const {
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return mOff;
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}
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private:
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void* mPtr;
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size_t mLength;
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const size_t mLimit;
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off_t mOff;
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};
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#ifdef MOZ_OTS_REPORT_ERRORS
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struct OTSCallbackUserData {
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gfxUserFontSet *mFontSet;
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gfxProxyFontEntry *mProxy;
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};
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/* static */ bool
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gfxUserFontSet::OTSMessage(void *aUserData, const char *format, ...)
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{
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va_list va;
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va_start(va, format);
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// buf should be more than adequate for any message OTS generates,
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// so we don't worry about checking the result of vsnprintf()
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char buf[512];
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(void)vsnprintf(buf, sizeof(buf), format, va);
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va_end(va);
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OTSCallbackUserData *d = static_cast<OTSCallbackUserData*>(aUserData);
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d->mFontSet->LogMessage(d->mProxy, buf);
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return false;
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}
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#endif
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// Call the OTS library to sanitize an sfnt before attempting to use it.
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// Returns a newly-allocated block, or NULL in case of fatal errors.
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const uint8_t*
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gfxUserFontSet::SanitizeOpenTypeData(gfxProxyFontEntry *aProxy,
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const uint8_t* aData, uint32_t aLength,
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uint32_t& aSaneLength, bool aIsCompressed)
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{
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// limit output/expansion to 256MB
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ExpandingMemoryStream output(aIsCompressed ? aLength * 2 : aLength,
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1024 * 1024 * 256);
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#ifdef MOZ_GRAPHITE
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#define PRESERVE_GRAPHITE true
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#else
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#define PRESERVE_GRAPHITE false
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#endif
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#ifdef MOZ_OTS_REPORT_ERRORS
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OTSCallbackUserData userData;
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userData.mFontSet = this;
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userData.mProxy = aProxy;
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#define ERROR_REPORTING_ARGS &gfxUserFontSet::OTSMessage, &userData,
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#else
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#define ERROR_REPORTING_ARGS
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#endif
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if (ots::Process(&output, aData, aLength,
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ERROR_REPORTING_ARGS
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PRESERVE_GRAPHITE)) {
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aSaneLength = output.Tell();
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return static_cast<uint8_t*>(output.forget());
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} else {
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aSaneLength = 0;
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return nullptr;
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}
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}
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static void
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StoreUserFontData(gfxFontEntry* aFontEntry, gfxProxyFontEntry* aProxy,
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const nsAString& aOriginalName,
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nsTArray<uint8_t>* aMetadata, uint32_t aMetaOrigLen)
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{
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if (!aFontEntry->mUserFontData) {
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aFontEntry->mUserFontData = new gfxUserFontData;
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}
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gfxUserFontData* userFontData = aFontEntry->mUserFontData;
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userFontData->mSrcIndex = aProxy->mSrcIndex;
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const gfxFontFaceSrc& src = aProxy->mSrcList[aProxy->mSrcIndex];
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if (src.mIsLocal) {
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userFontData->mLocalName = src.mLocalName;
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} else {
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userFontData->mURI = src.mURI;
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}
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userFontData->mFormat = src.mFormatFlags;
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userFontData->mRealName = aOriginalName;
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if (aMetadata) {
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userFontData->mMetadata.SwapElements(*aMetadata);
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userFontData->mMetaOrigLen = aMetaOrigLen;
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}
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}
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struct WOFFHeader {
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AutoSwap_PRUint32 signature;
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AutoSwap_PRUint32 flavor;
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AutoSwap_PRUint32 length;
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AutoSwap_PRUint16 numTables;
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AutoSwap_PRUint16 reserved;
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AutoSwap_PRUint32 totalSfntSize;
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AutoSwap_PRUint16 majorVersion;
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AutoSwap_PRUint16 minorVersion;
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AutoSwap_PRUint32 metaOffset;
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AutoSwap_PRUint32 metaCompLen;
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AutoSwap_PRUint32 metaOrigLen;
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AutoSwap_PRUint32 privOffset;
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AutoSwap_PRUint32 privLen;
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};
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void
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gfxUserFontSet::CopyWOFFMetadata(const uint8_t* aFontData,
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uint32_t aLength,
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nsTArray<uint8_t>* aMetadata,
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uint32_t* aMetaOrigLen)
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{
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// This function may be called with arbitrary, unvalidated "font" data
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// from @font-face, so it needs to be careful to bounds-check, etc.,
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// before trying to read anything.
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// This just saves a copy of the compressed data block; it does NOT check
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// that the block can be successfully decompressed, or that it contains
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// well-formed/valid XML metadata.
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if (aLength < sizeof(WOFFHeader)) {
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return;
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}
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const WOFFHeader* woff = reinterpret_cast<const WOFFHeader*>(aFontData);
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uint32_t metaOffset = woff->metaOffset;
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uint32_t metaCompLen = woff->metaCompLen;
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if (!metaOffset || !metaCompLen || !woff->metaOrigLen) {
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return;
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}
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if (metaOffset >= aLength || metaCompLen > aLength - metaOffset) {
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return;
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}
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if (!aMetadata->SetLength(woff->metaCompLen)) {
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return;
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}
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memcpy(aMetadata->Elements(), aFontData + metaOffset, metaCompLen);
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*aMetaOrigLen = woff->metaOrigLen;
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}
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// This is called when a font download finishes.
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// Ownership of aFontData passes in here, and the font set must
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// ensure that it is eventually deleted via NS_Free().
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bool
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gfxUserFontSet::OnLoadComplete(gfxProxyFontEntry *aProxy,
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const uint8_t *aFontData, uint32_t aLength,
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nsresult aDownloadStatus)
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{
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// forget about the loader, as we no longer potentially need to cancel it
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// if the entry is obsoleted
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aProxy->mLoader = nullptr;
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// download successful, make platform font using font data
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if (NS_SUCCEEDED(aDownloadStatus)) {
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gfxFontEntry *fe = LoadFont(aProxy, aFontData, aLength);
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aFontData = nullptr;
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if (fe) {
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IncrementGeneration();
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return true;
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}
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} else {
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// download failed
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LogMessage(aProxy, "download failed", nsIScriptError::errorFlag,
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aDownloadStatus);
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}
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if (aFontData) {
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NS_Free((void*)aFontData);
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}
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// error occurred, load next src
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(void)LoadNext(aProxy);
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// We ignore the status returned by LoadNext();
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// even if loading failed, we need to bump the font-set generation
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// and return true in order to trigger reflow, so that fallback
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// will be used where the text was "masked" by the pending download
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IncrementGeneration();
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return true;
|
|
}
|
|
|
|
|
|
gfxUserFontSet::LoadStatus
|
|
gfxUserFontSet::LoadNext(gfxProxyFontEntry *aProxyEntry)
|
|
{
|
|
uint32_t numSrc = aProxyEntry->mSrcList.Length();
|
|
|
|
NS_ASSERTION(aProxyEntry->mSrcIndex < numSrc,
|
|
"already at the end of the src list for user font");
|
|
|
|
if (aProxyEntry->mLoadingState == gfxProxyFontEntry::NOT_LOADING) {
|
|
aProxyEntry->mLoadingState = gfxProxyFontEntry::LOADING_STARTED;
|
|
aProxyEntry->mUnsupportedFormat = false;
|
|
} else {
|
|
// we were already loading; move to the next source,
|
|
// but don't reset state - if we've already timed out,
|
|
// that counts against the new download
|
|
aProxyEntry->mSrcIndex++;
|
|
}
|
|
|
|
// load each src entry in turn, until a local face is found
|
|
// or a download begins successfully
|
|
while (aProxyEntry->mSrcIndex < numSrc) {
|
|
const gfxFontFaceSrc& currSrc = aProxyEntry->mSrcList[aProxyEntry->mSrcIndex];
|
|
|
|
// src local ==> lookup and load immediately
|
|
|
|
if (currSrc.mIsLocal) {
|
|
gfxFontEntry *fe =
|
|
gfxPlatform::GetPlatform()->LookupLocalFont(aProxyEntry,
|
|
currSrc.mLocalName);
|
|
if (fe) {
|
|
LOG(("userfonts (%p) [src %d] loaded local: (%s) for (%s) gen: %8.8x\n",
|
|
this, aProxyEntry->mSrcIndex,
|
|
NS_ConvertUTF16toUTF8(currSrc.mLocalName).get(),
|
|
NS_ConvertUTF16toUTF8(aProxyEntry->mFamily->Name()).get(),
|
|
uint32_t(mGeneration)));
|
|
fe->mFeatureSettings.AppendElements(aProxyEntry->mFeatureSettings);
|
|
fe->mLanguageOverride = aProxyEntry->mLanguageOverride;
|
|
StoreUserFontData(fe, aProxyEntry, nsString(), nullptr, 0);
|
|
ReplaceFontEntry(aProxyEntry, fe);
|
|
return STATUS_LOADED;
|
|
} else {
|
|
LOG(("userfonts (%p) [src %d] failed local: (%s) for (%s)\n",
|
|
this, aProxyEntry->mSrcIndex,
|
|
NS_ConvertUTF16toUTF8(currSrc.mLocalName).get(),
|
|
NS_ConvertUTF16toUTF8(aProxyEntry->mFamily->Name()).get()));
|
|
}
|
|
}
|
|
|
|
// src url ==> start the load process
|
|
else {
|
|
if (gfxPlatform::GetPlatform()->IsFontFormatSupported(currSrc.mURI,
|
|
currSrc.mFormatFlags)) {
|
|
|
|
nsresult rv;
|
|
bool loadDoesntSpin = false;
|
|
rv = NS_URIChainHasFlags(currSrc.mURI,
|
|
nsIProtocolHandler::URI_SYNC_LOAD_IS_OK,
|
|
&loadDoesntSpin);
|
|
|
|
if (NS_SUCCEEDED(rv) && loadDoesntSpin) {
|
|
uint8_t *buffer = nullptr;
|
|
uint32_t bufferLength = 0;
|
|
|
|
// sync load font immediately
|
|
rv = SyncLoadFontData(aProxyEntry, &currSrc, buffer,
|
|
bufferLength);
|
|
|
|
if (NS_SUCCEEDED(rv) &&
|
|
LoadFont(aProxyEntry, buffer, bufferLength)) {
|
|
return STATUS_LOADED;
|
|
} else {
|
|
LogMessage(aProxyEntry, "font load failed",
|
|
nsIScriptError::errorFlag, rv);
|
|
}
|
|
|
|
} else {
|
|
// otherwise load font async
|
|
rv = StartLoad(aProxyEntry, &currSrc);
|
|
bool loadOK = NS_SUCCEEDED(rv);
|
|
|
|
if (loadOK) {
|
|
#ifdef PR_LOGGING
|
|
if (LOG_ENABLED()) {
|
|
nsCAutoString fontURI;
|
|
currSrc.mURI->GetSpec(fontURI);
|
|
LOG(("userfonts (%p) [src %d] loading uri: (%s) for (%s)\n",
|
|
this, aProxyEntry->mSrcIndex, fontURI.get(),
|
|
NS_ConvertUTF16toUTF8(aProxyEntry->mFamily->Name()).get()));
|
|
}
|
|
#endif
|
|
return STATUS_LOADING;
|
|
} else {
|
|
LogMessage(aProxyEntry, "download failed",
|
|
nsIScriptError::errorFlag, rv);
|
|
}
|
|
}
|
|
} else {
|
|
// We don't log a warning to the web console yet,
|
|
// as another source may load successfully
|
|
aProxyEntry->mUnsupportedFormat = true;
|
|
}
|
|
}
|
|
|
|
aProxyEntry->mSrcIndex++;
|
|
}
|
|
|
|
if (aProxyEntry->mUnsupportedFormat) {
|
|
LogMessage(aProxyEntry, "no supported format found",
|
|
nsIScriptError::warningFlag);
|
|
}
|
|
|
|
// all src's failed; mark this entry as unusable (so fallback will occur)
|
|
LOG(("userfonts (%p) failed all src for (%s)\n",
|
|
this, NS_ConvertUTF16toUTF8(aProxyEntry->mFamily->Name()).get()));
|
|
aProxyEntry->mLoadingState = gfxProxyFontEntry::LOADING_FAILED;
|
|
|
|
return STATUS_END_OF_LIST;
|
|
}
|
|
|
|
void
|
|
gfxUserFontSet::IncrementGeneration()
|
|
{
|
|
// add one, increment again if zero
|
|
LL_ADD(sFontSetGeneration, sFontSetGeneration, 1);
|
|
if (LL_IS_ZERO(sFontSetGeneration))
|
|
LL_ADD(sFontSetGeneration, sFontSetGeneration, 1);
|
|
mGeneration = sFontSetGeneration;
|
|
}
|
|
|
|
|
|
gfxFontEntry*
|
|
gfxUserFontSet::LoadFont(gfxProxyFontEntry *aProxy,
|
|
const uint8_t *aFontData, uint32_t &aLength)
|
|
{
|
|
// if the proxy doesn't belong to a family, we just bail as it won't be
|
|
// accessible/usable anyhow (maybe the font set got modified right as
|
|
// the load was completing?)
|
|
if (!aProxy->Family()) {
|
|
NS_Free(const_cast<uint8_t*>(aFontData));
|
|
return nullptr;
|
|
}
|
|
|
|
gfxFontEntry *fe = nullptr;
|
|
|
|
gfxUserFontType fontType =
|
|
gfxFontUtils::DetermineFontDataType(aFontData, aLength);
|
|
|
|
// Save a copy of the metadata block (if present) for nsIDOMFontFace
|
|
// to use if required. Ownership of the metadata block will be passed
|
|
// to the gfxUserFontData record below.
|
|
// NOTE: after the non-OTS codepath using PrepareOpenTypeData is
|
|
// removed, we should defer this until after we've created the new
|
|
// fontEntry.
|
|
nsTArray<uint8_t> metadata;
|
|
uint32_t metaOrigLen = 0;
|
|
if (fontType == GFX_USERFONT_WOFF) {
|
|
CopyWOFFMetadata(aFontData, aLength, &metadata, &metaOrigLen);
|
|
}
|
|
|
|
// Unwrap/decompress/sanitize or otherwise munge the downloaded data
|
|
// to make a usable sfnt structure.
|
|
|
|
// Because platform font activation code may replace the name table
|
|
// in the font with a synthetic one, we save the original name so that
|
|
// it can be reported via the nsIDOMFontFace API.
|
|
nsAutoString originalFullName;
|
|
|
|
if (gfxPlatform::GetPlatform()->SanitizeDownloadedFonts()) {
|
|
// Call the OTS sanitizer; this will also decode WOFF to sfnt
|
|
// if necessary. The original data in aFontData is left unchanged.
|
|
uint32_t saneLen;
|
|
const uint8_t* saneData =
|
|
SanitizeOpenTypeData(aProxy, aFontData, aLength, saneLen,
|
|
fontType == GFX_USERFONT_WOFF);
|
|
if (!saneData) {
|
|
LogMessage(aProxy, "rejected by sanitizer");
|
|
}
|
|
if (saneData) {
|
|
// The sanitizer ensures that we have a valid sfnt and a usable
|
|
// name table, so this should never fail unless we're out of
|
|
// memory, and GetFullNameFromSFNT is not directly exposed to
|
|
// arbitrary/malicious data from the web.
|
|
gfxFontUtils::GetFullNameFromSFNT(saneData, saneLen,
|
|
originalFullName);
|
|
// Here ownership of saneData is passed to the platform,
|
|
// which will delete it when no longer required
|
|
fe = gfxPlatform::GetPlatform()->MakePlatformFont(aProxy,
|
|
saneData,
|
|
saneLen);
|
|
if (!fe) {
|
|
LogMessage(aProxy, "not usable by platform");
|
|
}
|
|
}
|
|
} else {
|
|
// FIXME: this code can be removed once we remove the pref to
|
|
// disable the sanitizer; the PrepareOpenTypeData and
|
|
// ValidateSFNTHeaders functions will then be obsolete.
|
|
aFontData = PrepareOpenTypeData(aFontData, &aLength);
|
|
|
|
if (aFontData) {
|
|
if (gfxFontUtils::ValidateSFNTHeaders(aFontData, aLength)) {
|
|
// ValidateSFNTHeaders has checked that we have a valid
|
|
// sfnt structure and a usable 'name' table
|
|
gfxFontUtils::GetFullNameFromSFNT(aFontData, aLength,
|
|
originalFullName);
|
|
// Here ownership of aFontData is passed to the platform,
|
|
// which will delete it when no longer required
|
|
fe = gfxPlatform::GetPlatform()->MakePlatformFont(aProxy,
|
|
aFontData,
|
|
aLength);
|
|
if (!fe) {
|
|
LogMessage(aProxy, "not usable by platform");
|
|
}
|
|
aFontData = nullptr; // we must NOT free this!
|
|
} else {
|
|
// the data was unusable, so just discard it
|
|
// (error will be reported below, if logging is enabled)
|
|
LogMessage(aProxy, "SFNT header or tables invalid");
|
|
}
|
|
}
|
|
}
|
|
|
|
if (aFontData) {
|
|
NS_Free((void*)aFontData);
|
|
aFontData = nullptr;
|
|
}
|
|
|
|
if (fe) {
|
|
// copy OpenType feature/language settings from the proxy to the
|
|
// newly-created font entry
|
|
fe->mFeatureSettings.AppendElements(aProxy->mFeatureSettings);
|
|
fe->mLanguageOverride = aProxy->mLanguageOverride;
|
|
StoreUserFontData(fe, aProxy, originalFullName,
|
|
&metadata, metaOrigLen);
|
|
#ifdef PR_LOGGING
|
|
// must do this before ReplaceFontEntry() because that will
|
|
// clear the proxy's mFamily pointer!
|
|
if (LOG_ENABLED()) {
|
|
nsCAutoString fontURI;
|
|
aProxy->mSrcList[aProxy->mSrcIndex].mURI->GetSpec(fontURI);
|
|
LOG(("userfonts (%p) [src %d] loaded uri: (%s) for (%s) gen: %8.8x\n",
|
|
this, aProxy->mSrcIndex, fontURI.get(),
|
|
NS_ConvertUTF16toUTF8(aProxy->mFamily->Name()).get(),
|
|
uint32_t(mGeneration)));
|
|
}
|
|
#endif
|
|
ReplaceFontEntry(aProxy, fe);
|
|
} else {
|
|
#ifdef PR_LOGGING
|
|
if (LOG_ENABLED()) {
|
|
nsCAutoString fontURI;
|
|
aProxy->mSrcList[aProxy->mSrcIndex].mURI->GetSpec(fontURI);
|
|
LOG(("userfonts (%p) [src %d] failed uri: (%s) for (%s)"
|
|
" error making platform font\n",
|
|
this, aProxy->mSrcIndex, fontURI.get(),
|
|
NS_ConvertUTF16toUTF8(aProxy->mFamily->Name()).get()));
|
|
}
|
|
#endif
|
|
}
|
|
|
|
return fe;
|
|
}
|
|
|
|
gfxMixedFontFamily*
|
|
gfxUserFontSet::GetFamily(const nsAString& aFamilyName) const
|
|
{
|
|
nsAutoString key(aFamilyName);
|
|
ToLowerCase(key);
|
|
|
|
return mFontFamilies.GetWeak(key);
|
|
}
|
|
|