/* -*- Mode: C++; tab-width: 20; 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/Base64.h" #include "mozilla/FontPropertyTypes.h" #include "mozilla/MemoryReporting.h" #include "mozilla/dom/ContentChild.h" #include "gfxAndroidPlatform.h" #include "mozilla/Omnijar.h" #include "mozilla/UniquePtr.h" #include "mozilla/UniquePtrExtensions.h" #include "nsReadableUtils.h" #include "nsXULAppAPI.h" #include #include #define ALOG(args...) __android_log_print(ANDROID_LOG_INFO, "Gecko", ##args) #include "ft2build.h" #include FT_FREETYPE_H #include FT_TRUETYPE_TAGS_H #include FT_TRUETYPE_TABLES_H #include FT_MULTIPLE_MASTERS_H #include "cairo-ft.h" #include "gfxFT2FontList.h" #include "gfxFT2Fonts.h" #include "gfxFT2Utils.h" #include "gfxUserFontSet.h" #include "gfxFontUtils.h" #include "SharedFontList-impl.h" #include "harfbuzz/hb-ot.h" // for name ID constants #include "nsServiceManagerUtils.h" #include "nsIObserverService.h" #include "nsTArray.h" #include "nsUnicharUtils.h" #include "nsCRT.h" #include "nsDirectoryServiceUtils.h" #include "nsDirectoryServiceDefs.h" #include "nsAppDirectoryServiceDefs.h" #include "nsIMemory.h" #include "gfxFontConstants.h" #include "mozilla/EndianUtils.h" #include "mozilla/Preferences.h" #include "mozilla/scache/StartupCache.h" #include #include #include #ifdef MOZ_WIDGET_ANDROID # include "mozilla/jni/Utils.h" # include #endif using namespace mozilla; using namespace mozilla::gfx; static LazyLogModule sFontInfoLog("fontInfoLog"); #undef LOG #define LOG(args) MOZ_LOG(sFontInfoLog, mozilla::LogLevel::Debug, args) #define LOG_ENABLED() MOZ_LOG_TEST(sFontInfoLog, mozilla::LogLevel::Debug) static __inline void BuildKeyNameFromFontName(nsACString& aName) { ToLowerCase(aName); } // Helper to access the FT_Face for a given FT2FontEntry, // creating a temporary face if the entry does not have one yet. // This allows us to read font names, tables, etc if necessary // without permanently instantiating a freetype face and consuming // memory long-term. // This may fail (resulting in a null FT_Face), e.g. if it fails to // allocate memory to uncompress a font from omnijar. already_AddRefed FT2FontEntry::GetFTFace(bool aCommit) { if (mFTFace) { return do_AddRef(mFTFace); } NS_ASSERTION(!mFilename.IsEmpty(), "can't use GetFTFace for fonts without a filename"); // A relative path (no initial "/") means this is a resource in // omnijar, not an installed font on the device. // The NS_ASSERTIONs here should never fail, as the resource must have // been read successfully during font-list initialization or we'd never // have created the font entry. The only legitimate runtime failure // here would be memory allocation, in which case mFace remains null. RefPtr face; if (mFilename[0] != '/') { RefPtr reader = Omnijar::GetReader(Omnijar::Type::GRE); nsZipItem* item = reader->GetItem(mFilename.get()); NS_ASSERTION(item, "failed to find zip entry"); uint32_t bufSize = item->RealSize(); uint8_t* fontDataBuf = static_cast(malloc(bufSize)); if (fontDataBuf) { nsZipCursor cursor(item, reader, fontDataBuf, bufSize); cursor.Copy(&bufSize); NS_ASSERTION(bufSize == item->RealSize(), "error reading bundled font"); RefPtr ufd = new FTUserFontData(fontDataBuf, bufSize); face = ufd->CloneFace(mFTFontIndex); if (!face) { NS_WARNING("failed to create freetype face"); return nullptr; } } } else { face = Factory::NewSharedFTFace(nullptr, mFilename.get(), mFTFontIndex); if (!face) { NS_WARNING("failed to create freetype face"); return nullptr; } if (FT_Err_Ok != FT_Select_Charmap(face->GetFace(), FT_ENCODING_UNICODE) && FT_Err_Ok != FT_Select_Charmap(face->GetFace(), FT_ENCODING_MS_SYMBOL)) { NS_WARNING("failed to select Unicode or symbol charmap"); } } if (aCommit) { mFTFace = face; } return face.forget(); } FTUserFontData* FT2FontEntry::GetUserFontData() { if (mFTFace && mFTFace->GetData()) { return static_cast(mFTFace->GetData()); } return nullptr; } /* * FT2FontEntry * gfxFontEntry subclass corresponding to a specific face that can be * rendered by freetype. This is associated with a face index in a * file (normally a .ttf/.otf file holding a single face, but in principle * there could be .ttc files with multiple faces). * The FT2FontEntry can create the necessary FT_Face on demand, and can * then create a Cairo font_face and scaled_font for drawing. */ FT2FontEntry::~FT2FontEntry() { if (mMMVar) { FT_Done_MM_Var(mFTFace->GetFace()->glyph->library, mMMVar); } } gfxFontEntry* FT2FontEntry::Clone() const { MOZ_ASSERT(!IsUserFont(), "we can only clone installed fonts!"); FT2FontEntry* fe = new FT2FontEntry(Name()); fe->mFilename = mFilename; fe->mFTFontIndex = mFTFontIndex; fe->mWeightRange = mWeightRange; fe->mStretchRange = mStretchRange; fe->mStyleRange = mStyleRange; return fe; } gfxFont* FT2FontEntry::CreateFontInstance(const gfxFontStyle* aStyle) { RefPtr face = GetFTFace(true); if (!face) { return nullptr; } // If variations are present, we will not use our cached mFTFace // but always create a new one as it will have custom variation // coordinates applied. if ((!mVariationSettings.IsEmpty() || (aStyle && !aStyle->variationSettings.IsEmpty())) && (face->GetFace()->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS)) { // Create a separate FT_Face because we need to apply custom // variation settings to it. RefPtr varFace; if (!mFilename.IsEmpty() && mFilename[0] == '/') { varFace = Factory::NewSharedFTFace(nullptr, mFilename.get(), mFTFontIndex); } else { varFace = face->GetData()->CloneFace(mFTFontIndex); } if (varFace) { // Resolve variations from entry (descriptor) and style (property) AutoTArray settings; GetVariationsForStyle(settings, aStyle ? *aStyle : gfxFontStyle()); gfxFT2FontBase::SetupVarCoords(GetMMVar(), settings, varFace->GetFace()); face = std::move(varFace); } } int loadFlags = gfxPlatform::GetPlatform()->FontHintingEnabled() ? FT_LOAD_DEFAULT : (FT_LOAD_NO_AUTOHINT | FT_LOAD_NO_HINTING); if (face->GetFace()->face_flags & FT_FACE_FLAG_TRICKY) { loadFlags &= ~FT_LOAD_NO_AUTOHINT; } RefPtr unscaledFont(mUnscaledFont); if (!unscaledFont) { unscaledFont = !mFilename.IsEmpty() && mFilename[0] == '/' ? new UnscaledFontFreeType(mFilename.BeginReading(), mFTFontIndex, mFTFace) : new UnscaledFontFreeType(mFTFace); mUnscaledFont = unscaledFont; } gfxFont* font = new gfxFT2Font(unscaledFont, std::move(face), this, aStyle, loadFlags); return font; } /* static */ FT2FontEntry* FT2FontEntry::CreateFontEntry( const nsACString& aFontName, WeightRange aWeight, StretchRange aStretch, SlantStyleRange aStyle, const uint8_t* aFontData, uint32_t aLength) { // Ownership of aFontData is passed in here; the fontEntry must // retain it as long as the FT_Face needs it, and ensure it is // eventually deleted. RefPtr ufd = new FTUserFontData(aFontData, aLength); RefPtr face = ufd->CloneFace(); if (!face) { return nullptr; } // Create our FT2FontEntry, which inherits the name of the userfont entry // as it's not guaranteed that the face has valid names (bug 737315) FT2FontEntry* fe = FT2FontEntry::CreateFontEntry(aFontName, nullptr, 0, nullptr); if (fe) { fe->mFTFace = face; fe->mStyleRange = aStyle; fe->mWeightRange = aWeight; fe->mStretchRange = aStretch; fe->mIsDataUserFont = true; } return fe; } /* static */ FT2FontEntry* FT2FontEntry::CreateFontEntry(const FontListEntry& aFLE) { FT2FontEntry* fe = new FT2FontEntry(aFLE.faceName()); fe->mFilename = aFLE.filepath(); fe->mFTFontIndex = aFLE.index(); fe->mWeightRange = WeightRange::FromScalar(aFLE.weightRange()); fe->mStretchRange = StretchRange::FromScalar(aFLE.stretchRange()); fe->mStyleRange = SlantStyleRange::FromScalar(aFLE.styleRange()); return fe; } // Extract font entry properties from an hb_face_t static void SetPropertiesFromFace(gfxFontEntry* aFontEntry, const hb_face_t* aFace) { // OS2 width class to CSS 'stretch' mapping from // https://docs.microsoft.com/en-gb/typography/opentype/spec/os2#uswidthclass const float kOS2WidthToStretch[] = { 100, // (invalid, treat as normal) 50, // Ultra-condensed 62.5, // Extra-condensed 75, // Condensed 87.5, // Semi-condensed 100, // Normal 112.5, // Semi-expanded 125, // Expanded 150, // Extra-expanded 200 // Ultra-expanded }; // Get the macStyle field from the 'head' table hb_blob_t* blob = hb_face_reference_table(aFace, HB_TAG('h', 'e', 'a', 'd')); unsigned int len; const char* data = hb_blob_get_data(blob, &len); uint16_t style = 0; if (len >= sizeof(HeadTable)) { const HeadTable* head = reinterpret_cast(data); style = head->macStyle; } hb_blob_destroy(blob); // Get the OS/2 table for weight & width fields blob = hb_face_reference_table(aFace, HB_TAG('O', 'S', '/', '2')); data = hb_blob_get_data(blob, &len); uint16_t os2weight = 400; float stretch = 100.0; if (len >= offsetof(OS2Table, fsType)) { const OS2Table* os2 = reinterpret_cast(data); os2weight = os2->usWeightClass; uint16_t os2width = os2->usWidthClass; if (os2width < ArrayLength(kOS2WidthToStretch)) { stretch = kOS2WidthToStretch[os2width]; } } hb_blob_destroy(blob); aFontEntry->mStyleRange = SlantStyleRange( (style & 2) ? FontSlantStyle::Italic() : FontSlantStyle::Normal()); aFontEntry->mWeightRange = WeightRange(FontWeight(int(os2weight))); aFontEntry->mStretchRange = StretchRange(FontStretch(stretch)); } // Used to create the font entry for installed faces on the device, // when iterating over the fonts directories. // We use the hb_face_t to retrieve the details needed for the font entry, // but do *not* save a reference to it, nor create a cairo face. /* static */ FT2FontEntry* FT2FontEntry::CreateFontEntry(const nsACString& aName, const char* aFilename, uint8_t aIndex, const hb_face_t* aFace) { FT2FontEntry* fe = new FT2FontEntry(aName); fe->mFilename = aFilename; fe->mFTFontIndex = aIndex; if (aFace) { SetPropertiesFromFace(fe, aFace); } else { // If nullptr is passed for aFace, the caller is intending to override // these attributes anyway. We just set defaults here to be safe. fe->mStyleRange = SlantStyleRange(FontSlantStyle::Normal()); fe->mWeightRange = WeightRange(FontWeight::Normal()); fe->mStretchRange = StretchRange(FontStretch::Normal()); } return fe; } FT2FontEntry* gfxFT2Font::GetFontEntry() { return static_cast(mFontEntry.get()); } // Copied/modified from similar code in gfxMacPlatformFontList.mm: // Complex scripts will not render correctly unless Graphite or OT // layout tables are present. // For OpenType, we also check that the GSUB table supports the relevant // script tag, to avoid using things like Arial Unicode MS for Lao (it has // the characters, but lacks OpenType support). // TODO: consider whether we should move this to gfxFontEntry and do similar // cmap-masking on all platforms to avoid using fonts that won't shape // properly. nsresult FT2FontEntry::ReadCMAP(FontInfoData* aFontInfoData) { if (mCharacterMap) { return NS_OK; } RefPtr charmap = new gfxCharacterMap(); nsresult rv = NS_ERROR_NOT_AVAILABLE; hb_blob_t* cmapBlob = GetFontTable(TTAG_cmap); if (cmapBlob) { unsigned int length; const char* data = hb_blob_get_data(cmapBlob, &length); rv = gfxFontUtils::ReadCMAP((const uint8_t*)data, length, *charmap, mUVSOffset); hb_blob_destroy(cmapBlob); } if (NS_SUCCEEDED(rv) && !mIsDataUserFont && !HasGraphiteTables()) { // For downloadable fonts, trust the author and don't // try to munge the cmap based on script shaping support. // We also assume a Graphite font knows what it's doing, // and provides whatever shaping is needed for the // characters it supports, so only check/clear the // complex-script ranges for non-Graphite fonts // for layout support, check for the presence of opentype layout tables bool hasGSUB = HasFontTable(TRUETYPE_TAG('G', 'S', 'U', 'B')); for (const ScriptRange* sr = gfxPlatformFontList::sComplexScriptRanges; sr->rangeStart; sr++) { // check to see if the cmap includes complex script codepoints if (charmap->TestRange(sr->rangeStart, sr->rangeEnd)) { // We check for GSUB here, as GPOS alone would not be ok. if (hasGSUB && SupportsScriptInGSUB(sr->tags, sr->numTags)) { continue; } charmap->ClearRange(sr->rangeStart, sr->rangeEnd); } } } #ifdef MOZ_WIDGET_ANDROID // Hack for the SamsungDevanagari font, bug 1012365: // pretend the font supports U+0972. if (!charmap->test(0x0972) && charmap->test(0x0905) && charmap->test(0x0945)) { charmap->set(0x0972); } #endif mHasCmapTable = NS_SUCCEEDED(rv); if (mHasCmapTable) { gfxPlatformFontList* pfl = gfxPlatformFontList::PlatformFontList(); mCharacterMap = pfl->FindCharMap(charmap); } else { // if error occurred, initialize to null cmap mCharacterMap = new gfxCharacterMap(); } return rv; } nsresult FT2FontEntry::CopyFontTable(uint32_t aTableTag, nsTArray& aBuffer) { RefPtr face = GetFTFace(); if (!face) { return NS_ERROR_FAILURE; } FT_Error status; FT_ULong len = 0; status = FT_Load_Sfnt_Table(face->GetFace(), aTableTag, 0, nullptr, &len); if (status != FT_Err_Ok || len == 0) { return NS_ERROR_FAILURE; } if (!aBuffer.SetLength(len, fallible)) { return NS_ERROR_OUT_OF_MEMORY; } uint8_t* buf = aBuffer.Elements(); status = FT_Load_Sfnt_Table(face->GetFace(), aTableTag, 0, buf, &len); NS_ENSURE_TRUE(status == FT_Err_Ok, NS_ERROR_FAILURE); return NS_OK; } hb_blob_t* FT2FontEntry::GetFontTable(uint32_t aTableTag) { if (FTUserFontData* userFontData = GetUserFontData()) { // If there's a cairo font face, we may be able to return a blob // that just wraps a range of the attached user font data if (userFontData->FontData()) { return gfxFontUtils::GetTableFromFontData(userFontData->FontData(), aTableTag); } } // If the FT_Face hasn't been instantiated, try to read table directly // via harfbuzz API to avoid expensive FT_Face creation. if (!mFTFace && !mFilename.IsEmpty()) { hb_blob_t* result = nullptr; if (mFilename[0] == '/') { // An absolute path means a normal file in the filesystem, so we can use // hb_blob_create_from_file to read it. hb_blob_t* fileBlob = hb_blob_create_from_file(mFilename.get()); if (hb_blob_get_length(fileBlob) > 0) { hb_face_t* face = hb_face_create(fileBlob, mFTFontIndex); result = hb_face_reference_table(face, aTableTag); hb_face_destroy(face); } hb_blob_destroy(fileBlob); } else { // A relative path means an omnijar resource, which we may need to // decompress to a temporary buffer. RefPtr reader = Omnijar::GetReader(Omnijar::Type::GRE); nsZipItem* item = reader->GetItem(mFilename.get()); MOZ_ASSERT(item, "failed to find zip entry"); if (item) { // TODO(jfkthame): // Check whether the item is compressed; if not, we could just get a // pointer without needing to allocate a buffer and copy the data. // (Currently this configuration isn't used for Gecko on Android.) uint32_t length = item->RealSize(); uint8_t* buffer = static_cast(malloc(length)); if (buffer) { nsZipCursor cursor(item, reader, buffer, length); cursor.Copy(&length); MOZ_ASSERT(length == item->RealSize(), "error reading font"); if (length == item->RealSize()) { hb_blob_t* blob = hb_blob_create((const char*)buffer, length, HB_MEMORY_MODE_READONLY, buffer, free); hb_face_t* face = hb_face_create(blob, mFTFontIndex); result = hb_face_reference_table(face, aTableTag); hb_face_destroy(face); hb_blob_destroy(blob); } } } } if (result) { return result; } } // Otherwise, use the default method (which in turn will call our // implementation of CopyFontTable). return gfxFontEntry::GetFontTable(aTableTag); } bool FT2FontEntry::HasVariations() { if (!mHasVariationsInitialized) { mHasVariationsInitialized = true; if (mFTFace) { mHasVariations = mFTFace->GetFace()->face_flags & FT_FACE_FLAG_MULTIPLE_MASTERS; } else { mHasVariations = gfxPlatform::GetPlatform()->HasVariationFontSupport() && HasFontTable(TRUETYPE_TAG('f', 'v', 'a', 'r')); } } return mHasVariations; } void FT2FontEntry::GetVariationAxes(nsTArray& aAxes) { if (!HasVariations()) { return; } FT_MM_Var* mmVar = GetMMVar(); if (!mmVar) { return; } gfxFT2Utils::GetVariationAxes(mmVar, aAxes); } void FT2FontEntry::GetVariationInstances( nsTArray& aInstances) { if (!HasVariations()) { return; } FT_MM_Var* mmVar = GetMMVar(); if (!mmVar) { return; } gfxFT2Utils::GetVariationInstances(this, mmVar, aInstances); } FT_MM_Var* FT2FontEntry::GetMMVar() { if (mMMVarInitialized) { return mMMVar; } mMMVarInitialized = true; RefPtr face = GetFTFace(true); if (!face) { return nullptr; } if (FT_Err_Ok != FT_Get_MM_Var(face->GetFace(), &mMMVar)) { mMMVar = nullptr; } return mMMVar; } void FT2FontEntry::AddSizeOfExcludingThis(MallocSizeOf aMallocSizeOf, FontListSizes* aSizes) const { gfxFontEntry::AddSizeOfExcludingThis(aMallocSizeOf, aSizes); aSizes->mFontListSize += mFilename.SizeOfExcludingThisIfUnshared(aMallocSizeOf); } void FT2FontEntry::AddSizeOfIncludingThis(MallocSizeOf aMallocSizeOf, FontListSizes* aSizes) const { aSizes->mFontListSize += aMallocSizeOf(this); AddSizeOfExcludingThis(aMallocSizeOf, aSizes); } /* * FT2FontFamily * A standard gfxFontFamily; just adds a method used to support sending * the font list from chrome to content via IPC. */ void FT2FontFamily::AddFacesToFontList(nsTArray* aFontList) { for (int i = 0, n = mAvailableFonts.Length(); i < n; ++i) { const FT2FontEntry* fe = static_cast(mAvailableFonts[i].get()); if (!fe) { continue; } aFontList->AppendElement(FontListEntry( Name(), fe->Name(), fe->mFilename, fe->Weight().AsScalar(), fe->Stretch().AsScalar(), fe->SlantStyle().AsScalar(), fe->mFTFontIndex, Visibility())); } } /* * Startup cache support for the font list: * We store the list of families and faces, with their style attributes and the * corresponding font files, in the startup cache. * This allows us to recreate the gfxFT2FontList collection of families and * faces without instantiating Freetype faces for each font file (in order to * find their attributes), leading to significantly quicker startup. */ #define CACHE_KEY "font.cached-list" void gfxFT2FontList::CollectInitData(const FontListEntry& aFLE, const nsCString& aPSName, const nsCString& aFullName, StandardFile aStdFile) { nsAutoCString key(aFLE.familyName()); BuildKeyNameFromFontName(key); auto faceList = mFaceInitData.Get(key); if (!faceList) { faceList = new nsTArray; mFaceInitData.Put(key, faceList); mFamilyInitData.AppendElement( fontlist::Family::InitData{key, aFLE.familyName()}); } faceList->AppendElement( fontlist::Face::InitData{aFLE.filepath(), aFLE.index(), false, WeightRange::FromScalar(aFLE.weightRange()), StretchRange::FromScalar(aFLE.stretchRange()), SlantStyleRange::FromScalar(aFLE.styleRange())}); nsAutoCString psname(aPSName), fullname(aFullName); if (!psname.IsEmpty()) { ToLowerCase(psname); mLocalNameTable.Put(psname, fontlist::LocalFaceRec::InitData(key, aFLE.filepath())); } if (!fullname.IsEmpty()) { ToLowerCase(fullname); if (fullname != psname) { mLocalNameTable.Put( fullname, fontlist::LocalFaceRec::InitData(key, aFLE.filepath())); } } } class FontNameCache { public: // Delimiters used in the cached font-list records we store in startupCache static const char kFileSep = 0x1c; static const char kGroupSep = 0x1d; static const char kRecordSep = 0x1e; static const char kFieldSep = 0x1f; // Separator for font property ranges; we only look for this within a // field that holds a serialized FontPropertyValue or Range, so there's no // risk of conflicting with printable characters in font names. // Note that this must be a character that will terminate strtof() parsing // of a number. static const char kRangeSep = ':'; // Creates the object but does NOT load the cached data from the startup // cache; call Init() after creation to do that. FontNameCache() : mMap(&mOps, sizeof(FNCMapEntry), 0), mWriteNeeded(false) { // HACK ALERT: it's weird to assign |mOps| after we passed a pointer to // it to |mMap|'s constructor. A more normal approach here would be to // have a static |sOps| member. Unfortunately, this mysteriously but // consistently makes Fennec start-up slower, so we take this // unorthodox approach instead. It's safe because PLDHashTable's // constructor doesn't dereference the pointer; it just makes a copy of // it. mOps = (PLDHashTableOps){StringHash, HashMatchEntry, MoveEntry, PLDHashTable::ClearEntryStub, nullptr}; MOZ_ASSERT(XRE_IsParentProcess(), "FontNameCache should only be used in chrome process"); mCache = mozilla::scache::StartupCache::GetSingleton(); } ~FontNameCache() { WriteCache(); } size_t EntryCount() const { return mMap.EntryCount(); } void DropStaleEntries() { for (auto iter = mMap.Iter(); !iter.Done(); iter.Next()) { auto entry = static_cast(iter.Get()); if (!entry->mFileExists) { iter.Remove(); } } } void WriteCache() { if (!mWriteNeeded || !mCache) { return; } LOG(("Writing FontNameCache:")); nsAutoCString buf; for (auto iter = mMap.Iter(); !iter.Done(); iter.Next()) { auto entry = static_cast(iter.Get()); MOZ_ASSERT(entry->mFileExists); buf.Append(entry->mFilename); buf.Append(kGroupSep); buf.Append(entry->mFaces); buf.Append(kGroupSep); buf.AppendInt(entry->mTimestamp); buf.Append(kGroupSep); buf.AppendInt(entry->mFilesize); buf.Append(kFileSep); } LOG(("putting FontNameCache to " CACHE_KEY ", length %u", buf.Length() + 1)); mCache->PutBuffer(CACHE_KEY, UniquePtr(ToNewCString(buf)), buf.Length() + 1); mWriteNeeded = false; } // This may be called more than once (if we re-load the font list). void Init() { if (!mCache) { return; } uint32_t size; const char* cur; if (NS_FAILED(mCache->GetBuffer(CACHE_KEY, &cur, &size))) { LOG(("no cache of " CACHE_KEY)); return; } LOG(("got: %u bytes from the cache " CACHE_KEY, size)); mMap.Clear(); mWriteNeeded = false; while (const char* fileEnd = strchr(cur, kFileSep)) { // The cached record for one file is at [cur, fileEnd]. // Find end of field that starts at aStart, terminated by kGroupSep or // end of record. auto endOfField = [=](const char* aStart) -> const char* { MOZ_ASSERT(aStart <= fileEnd); const char* end = static_cast( memchr(aStart, kGroupSep, fileEnd - aStart)); if (end) { return end; } return fileEnd; }; // Advance aStart and aEnd to indicate the range of the next field and // return true, or just return false if already at end of record. auto nextField = [=](const char*& aStart, const char*& aEnd) -> bool { if (aEnd < fileEnd) { aStart = aEnd + 1; aEnd = endOfField(aStart); return true; } return false; }; const char* end = endOfField(cur); nsCString filename(cur, end - cur); if (!nextField(cur, end)) { break; } nsCString faceList(cur, end - cur); if (!nextField(cur, end)) { break; } uint32_t timestamp = strtoul(cur, nullptr, 10); if (!nextField(cur, end)) { break; } uint32_t filesize = strtoul(cur, nullptr, 10); auto mapEntry = static_cast(mMap.Add(filename.get(), fallible)); if (mapEntry) { mapEntry->mFilename.Assign(filename); mapEntry->mTimestamp = timestamp; mapEntry->mFilesize = filesize; mapEntry->mFaces.Assign(faceList); // entries from the startupcache are marked "non-existing" // until we have confirmed that the file still exists mapEntry->mFileExists = false; } cur = fileEnd + 1; } } void GetInfoForFile(const nsCString& aFileName, nsCString& aFaceList, uint32_t* aTimestamp, uint32_t* aFilesize) { auto entry = static_cast(mMap.Search(aFileName.get())); if (entry) { *aTimestamp = entry->mTimestamp; *aFilesize = entry->mFilesize; aFaceList.Assign(entry->mFaces); // this entry does correspond to an existing file // (although it might not be up-to-date, in which case // it will get overwritten via CacheFileInfo) entry->mFileExists = true; } } void CacheFileInfo(const nsCString& aFileName, const nsCString& aFaceList, uint32_t aTimestamp, uint32_t aFilesize) { auto entry = static_cast(mMap.Add(aFileName.get(), fallible)); if (entry) { entry->mFilename.Assign(aFileName); entry->mTimestamp = aTimestamp; entry->mFilesize = aFilesize; entry->mFaces.Assign(aFaceList); entry->mFileExists = true; } mWriteNeeded = true; } private: mozilla::scache::StartupCache* mCache; PLDHashTable mMap; bool mWriteNeeded; PLDHashTableOps mOps; struct FNCMapEntry : public PLDHashEntryHdr { public: nsCString mFilename; uint32_t mTimestamp; uint32_t mFilesize; nsCString mFaces; bool mFileExists; }; static PLDHashNumber StringHash(const void* key) { return HashString(reinterpret_cast(key)); } static bool HashMatchEntry(const PLDHashEntryHdr* aHdr, const void* key) { const FNCMapEntry* entry = static_cast(aHdr); return entry->mFilename.Equals(reinterpret_cast(key)); } static void MoveEntry(PLDHashTable* table, const PLDHashEntryHdr* aFrom, PLDHashEntryHdr* aTo) { FNCMapEntry* to = static_cast(aTo); const FNCMapEntry* from = static_cast(aFrom); to->mFilename.Assign(from->mFilename); to->mTimestamp = from->mTimestamp; to->mFilesize = from->mFilesize; to->mFaces.Assign(from->mFaces); to->mFileExists = from->mFileExists; } }; /*************************************************************** * * gfxFT2FontList * */ // For Mobile, we use gfxFT2Fonts, and we build the font list by directly // scanning the system's Fonts directory for OpenType and TrueType files. #define JAR_LAST_MODIFED_TIME "jar-last-modified-time" class WillShutdownObserver : public nsIObserver { public: NS_DECL_ISUPPORTS NS_DECL_NSIOBSERVER explicit WillShutdownObserver(gfxFT2FontList* aFontList) : mFontList(aFontList) {} void Remove() { nsCOMPtr obs = services::GetObserverService(); if (obs) { obs->RemoveObserver(this, NS_XPCOM_WILL_SHUTDOWN_OBSERVER_ID); } mFontList = nullptr; } protected: virtual ~WillShutdownObserver() = default; gfxFT2FontList* mFontList; }; NS_IMPL_ISUPPORTS(WillShutdownObserver, nsIObserver) NS_IMETHODIMP WillShutdownObserver::Observe(nsISupports* aSubject, const char* aTopic, const char16_t* aData) { if (!nsCRT::strcmp(aTopic, NS_XPCOM_WILL_SHUTDOWN_OBSERVER_ID)) { mFontList->WillShutdown(); } else { MOZ_ASSERT_UNREACHABLE("unexpected notification topic"); } return NS_OK; } gfxFT2FontList::gfxFT2FontList() : mJarModifiedTime(0) { nsCOMPtr obs = services::GetObserverService(); if (obs) { mObserver = new WillShutdownObserver(this); obs->AddObserver(mObserver, NS_XPCOM_WILL_SHUTDOWN_OBSERVER_ID, false); } } gfxFT2FontList::~gfxFT2FontList() { if (mObserver) { mObserver->Remove(); } } bool gfxFT2FontList::AppendFacesFromCachedFaceList(CollectFunc aCollectFace, const nsCString& aFileName, const nsCString& aFaceList, StandardFile aStdFile) { const char* start = aFaceList.get(); int count = 0; while (const char* recEnd = strchr(start, FontNameCache::kRecordSep)) { auto endOfField = [=](const char* aStart) -> const char* { MOZ_ASSERT(aStart <= recEnd); const char* end = static_cast( memchr(aStart, FontNameCache::kFieldSep, recEnd - aStart)); if (end) { return end; } return recEnd; }; auto nextField = [=](const char*& aStart, const char*& aEnd) -> bool { if (aEnd < recEnd) { aStart = aEnd + 1; aEnd = endOfField(aStart); return true; } return false; }; const char* end = endOfField(start); nsAutoCString familyName(start, end - start); nsAutoCString key(familyName); ToLowerCase(key); if (!nextField(start, end)) { break; } nsAutoCString faceName(start, end - start); if (!nextField(start, end)) { break; } uint32_t index = strtoul(start, nullptr, 10); if (!nextField(start, end)) { break; } nsAutoCString minStyle(start, end - start); nsAutoCString maxStyle(minStyle); int32_t colon = minStyle.FindChar(FontNameCache::kRangeSep); if (colon > 0) { maxStyle.Assign(minStyle.BeginReading() + colon + 1); minStyle.Truncate(colon); } if (!nextField(start, end)) { break; } char* limit; float minWeight = strtof(start, &limit); float maxWeight; if (*limit == FontNameCache::kRangeSep && limit + 1 < end) { maxWeight = strtof(limit + 1, nullptr); } else { maxWeight = minWeight; } if (!nextField(start, end)) { break; } float minStretch = strtof(start, &limit); float maxStretch; if (*limit == FontNameCache::kRangeSep && limit + 1 < end) { maxStretch = strtof(limit + 1, nullptr); } else { maxStretch = minStretch; } if (!nextField(start, end)) { break; } nsAutoCString psname(start, end - start); if (!nextField(start, end)) { break; } nsAutoCString fullname(start, end - start); if (!nextField(start, end)) { break; } FontVisibility visibility = FontVisibility(strtoul(start, nullptr, 10)); FontListEntry fle( familyName, faceName, aFileName, WeightRange(FontWeight(minWeight), FontWeight(maxWeight)).AsScalar(), StretchRange(FontStretch(minStretch), FontStretch(maxStretch)) .AsScalar(), SlantStyleRange(FontSlantStyle::FromString(minStyle.get()), FontSlantStyle::FromString(maxStyle.get())) .AsScalar(), index, visibility); aCollectFace(fle, psname, fullname, aStdFile); count++; start = recEnd + 1; } return count > 0; } void FT2FontEntry::AppendToFaceList(nsCString& aFaceList, const nsACString& aFamilyName, const nsACString& aPSName, const nsACString& aFullName, FontVisibility aVisibility) { aFaceList.Append(aFamilyName); aFaceList.Append(FontNameCache::kFieldSep); aFaceList.Append(Name()); aFaceList.Append(FontNameCache::kFieldSep); aFaceList.AppendInt(mFTFontIndex); aFaceList.Append(FontNameCache::kFieldSep); // Note that ToString() appends to the destination string without // replacing existing contents (see FontPropertyTypes.h) SlantStyle().Min().ToString(aFaceList); aFaceList.Append(FontNameCache::kRangeSep); SlantStyle().Max().ToString(aFaceList); aFaceList.Append(FontNameCache::kFieldSep); aFaceList.AppendFloat(Weight().Min().ToFloat()); aFaceList.Append(FontNameCache::kRangeSep); aFaceList.AppendFloat(Weight().Max().ToFloat()); aFaceList.Append(FontNameCache::kFieldSep); aFaceList.AppendFloat(Stretch().Min().Percentage()); aFaceList.Append(FontNameCache::kRangeSep); aFaceList.AppendFloat(Stretch().Max().Percentage()); aFaceList.Append(FontNameCache::kFieldSep); aFaceList.Append(aPSName); aFaceList.Append(FontNameCache::kFieldSep); aFaceList.Append(aFullName); aFaceList.Append(FontNameCache::kFieldSep); aFaceList.AppendInt(int(aVisibility)); aFaceList.Append(FontNameCache::kRecordSep); } void FT2FontEntry::CheckForBrokenFont(gfxFontFamily* aFamily) { // note if the family is in the "bad underline" blocklist if (aFamily->IsBadUnderlineFamily()) { mIsBadUnderlineFont = true; } nsAutoCString familyKey(aFamily->Name()); BuildKeyNameFromFontName(familyKey); CheckForBrokenFont(familyKey); } void FT2FontEntry::CheckForBrokenFont(const nsACString& aFamilyKey) { // bug 721719 - set the IgnoreGSUB flag on entries for Roboto // because of unwanted on-by-default "ae" ligature. // (See also AppendFaceFromFontListEntry.) if (aFamilyKey.EqualsLiteral("roboto")) { mIgnoreGSUB = true; return; } // bug 706888 - set the IgnoreGSUB flag on the broken version of // Droid Sans Arabic from certain phones, as identified by the // font checksum in the 'head' table if (aFamilyKey.EqualsLiteral("droid sans arabic")) { RefPtr face = GetFTFace(); if (face) { const TT_Header* head = static_cast( FT_Get_Sfnt_Table(face->GetFace(), ft_sfnt_head)); if (head && head->CheckSum_Adjust == 0xe445242) { mIgnoreGSUB = true; } } } } void gfxFT2FontList::AppendFacesFromBlob( const nsCString& aFileName, StandardFile aStdFile, hb_blob_t* aBlob, FontNameCache* aCache, uint32_t aTimestamp, uint32_t aFilesize) { nsCString newFaceList; uint32_t numFaces = 1; unsigned int length; const char* data = hb_blob_get_data(aBlob, &length); // Check for a possible TrueType Collection if (length >= sizeof(TTCHeader)) { const TTCHeader* ttc = reinterpret_cast(data); if (ttc->ttcTag == TRUETYPE_TAG('t', 't', 'c', 'f')) { numFaces = ttc->numFonts; } } for (unsigned int index = 0; index < numFaces; index++) { hb_face_t* face = hb_face_create(aBlob, index); if (face != hb_face_get_empty()) { AddFaceToList(aFileName, index, aStdFile, face, newFaceList); } hb_face_destroy(face); } if (aCache && !newFaceList.IsEmpty()) { aCache->CacheFileInfo(aFileName, newFaceList, aTimestamp, aFilesize); } } void gfxFT2FontList::AppendFacesFromFontFile(const nsCString& aFileName, FontNameCache* aCache, StandardFile aStdFile) { nsCString cachedFaceList; uint32_t filesize = 0, timestamp = 0; if (aCache) { aCache->GetInfoForFile(aFileName, cachedFaceList, ×tamp, &filesize); } struct stat s; int statRetval = stat(aFileName.get(), &s); if (!cachedFaceList.IsEmpty() && 0 == statRetval && uint32_t(s.st_mtime) == timestamp && s.st_size == filesize) { CollectFunc unshared = [](const FontListEntry& aFLE, const nsCString& aPSName, const nsCString& aFullName, StandardFile aStdFile) { PlatformFontList()->AppendFaceFromFontListEntry(aFLE, aStdFile); }; CollectFunc shared = [](const FontListEntry& aFLE, const nsCString& aPSName, const nsCString& aFullName, StandardFile aStdFile) { PlatformFontList()->CollectInitData(aFLE, aPSName, aFullName, aStdFile); }; if (AppendFacesFromCachedFaceList(SharedFontList() ? shared : unshared, aFileName, cachedFaceList, aStdFile)) { LOG(("using cached font info for %s", aFileName.get())); return; } } hb_blob_t* fileBlob = hb_blob_create_from_file(aFileName.get()); if (hb_blob_get_length(fileBlob) > 0) { LOG(("reading font info via harfbuzz for %s", aFileName.get())); AppendFacesFromBlob(aFileName, aStdFile, fileBlob, 0 == statRetval ? aCache : nullptr, s.st_mtime, s.st_size); } hb_blob_destroy(fileBlob); } void gfxFT2FontList::FindFontsInOmnijar(FontNameCache* aCache) { bool jarChanged = false; mozilla::scache::StartupCache* cache = mozilla::scache::StartupCache::GetSingleton(); const char* cachedModifiedTimeBuf; uint32_t longSize; if (cache && NS_SUCCEEDED(cache->GetBuffer(JAR_LAST_MODIFED_TIME, &cachedModifiedTimeBuf, &longSize)) && longSize == sizeof(int64_t)) { nsCOMPtr jarFile = Omnijar::GetPath(Omnijar::Type::GRE); jarFile->GetLastModifiedTime(&mJarModifiedTime); if (mJarModifiedTime > LittleEndian::readInt64(cachedModifiedTimeBuf)) { jarChanged = true; } } static const char* sJarSearchPaths[] = { "res/fonts/*.ttf$", }; RefPtr reader = Omnijar::GetReader(Omnijar::Type::GRE); for (unsigned i = 0; i < ArrayLength(sJarSearchPaths); i++) { nsZipFind* find; if (NS_SUCCEEDED(reader->FindInit(sJarSearchPaths[i], &find))) { const char* path; uint16_t len; while (NS_SUCCEEDED(find->FindNext(&path, &len))) { nsCString entryName(path, len); AppendFacesFromOmnijarEntry(reader, entryName, aCache, jarChanged); } delete find; } } } static void GetName(hb_face_t* aFace, hb_ot_name_id_t aNameID, nsACString& aName) { unsigned int n = 0; n = hb_ot_name_get_utf8(aFace, aNameID, HB_LANGUAGE_INVALID, &n, nullptr); if (n) { aName.SetLength(n++); // increment n to account for NUL terminator n = hb_ot_name_get_utf8(aFace, aNameID, HB_LANGUAGE_INVALID, &n, aName.BeginWriting()); } } // Given the harfbuzz face corresponding to an entryName and face index, // add the face to the available font list and to the faceList string void gfxFT2FontList::AddFaceToList(const nsCString& aEntryName, uint32_t aIndex, StandardFile aStdFile, hb_face_t* aFace, nsCString& aFaceList) { nsAutoCString familyName; bool preferTypographicNames = true; GetName(aFace, HB_OT_NAME_ID_TYPOGRAPHIC_FAMILY, familyName); if (familyName.IsEmpty()) { preferTypographicNames = false; GetName(aFace, HB_OT_NAME_ID_FONT_FAMILY, familyName); } if (familyName.IsEmpty()) { return; } nsAutoCString fullname; GetName(aFace, HB_OT_NAME_ID_FULL_NAME, fullname); if (fullname.IsEmpty()) { // Construct fullname from family + style fullname = familyName; nsAutoCString styleName; if (preferTypographicNames) { GetName(aFace, HB_OT_NAME_ID_TYPOGRAPHIC_SUBFAMILY, styleName); } if (styleName.IsEmpty()) { GetName(aFace, HB_OT_NAME_ID_FONT_SUBFAMILY, styleName); } if (!styleName.IsEmpty() && !styleName.EqualsLiteral("Regular")) { fullname.Append(' '); fullname.Append(styleName); } } // Build the font entry name and create an FT2FontEntry, // but do -not- keep a reference to the FT_Face. // (When using the shared font list, this entry will not be retained, // it is used only to call AppendToFaceList.) RefPtr fe = FT2FontEntry::CreateFontEntry(fullname, aEntryName.get(), aIndex, aFace); if (fe) { fe->mStandardFace = (aStdFile == kStandard); nsAutoCString familyKey(familyName); BuildKeyNameFromFontName(familyKey); FontVisibility visibility = FontVisibility::Unknown; nsAutoCString psname; GetName(aFace, HB_OT_NAME_ID_POSTSCRIPT_NAME, psname); if (SharedFontList()) { FontListEntry fle(familyName, fe->Name(), fe->mFilename, fe->Weight().AsScalar(), fe->Stretch().AsScalar(), fe->SlantStyle().AsScalar(), fe->mFTFontIndex, visibility); CollectInitData(fle, psname, fullname, aStdFile); } else { RefPtr family = mFontFamilies.GetWeak(familyKey); if (!family) { family = new FT2FontFamily(familyName, visibility); mFontFamilies.Put(familyKey, RefPtr{family}); if (mSkipSpaceLookupCheckFamilies.Contains(familyKey)) { family->SetSkipSpaceFeatureCheck(true); } if (mBadUnderlineFamilyNames.ContainsSorted(familyKey)) { family->SetBadUnderlineFamily(); } } family->AddFontEntry(fe); fe->CheckForBrokenFont(family); } fe->AppendToFaceList(aFaceList, familyName, psname, fullname, visibility); if (LOG_ENABLED()) { nsAutoCString weightString; fe->Weight().ToString(weightString); nsAutoCString stretchString; fe->Stretch().ToString(stretchString); LOG( ("(fontinit) added (%s) to family (%s)" " with style: %s weight: %s stretch: %s", fe->Name().get(), familyName.get(), fe->IsItalic() ? "italic" : "normal", weightString.get(), stretchString.get())); } } } void gfxFT2FontList::AppendFacesFromOmnijarEntry(nsZipArchive* aArchive, const nsCString& aEntryName, FontNameCache* aCache, bool aJarChanged) { nsCString faceList; if (aCache && !aJarChanged) { uint32_t filesize, timestamp; aCache->GetInfoForFile(aEntryName, faceList, ×tamp, &filesize); if (faceList.Length() > 0) { CollectFunc unshared = [](const FontListEntry& aFLE, const nsCString& aPSName, const nsCString& aFullName, StandardFile aStdFile) { PlatformFontList()->AppendFaceFromFontListEntry(aFLE, aStdFile); }; CollectFunc shared = [](const FontListEntry& aFLE, const nsCString& aPSName, const nsCString& aFullName, StandardFile aStdFile) { PlatformFontList()->CollectInitData(aFLE, aPSName, aFullName, aStdFile); }; if (AppendFacesFromCachedFaceList(SharedFontList() ? shared : unshared, aEntryName, faceList, kStandard)) { return; } } } nsZipItem* item = aArchive->GetItem(aEntryName.get()); NS_ASSERTION(item, "failed to find zip entry"); uint32_t bufSize = item->RealSize(); // We use fallible allocation here; if there's not enough RAM, we'll simply // ignore the bundled fonts and fall back to the device's installed fonts. char* buffer = static_cast(malloc(bufSize)); if (!buffer) { return; } nsZipCursor cursor(item, aArchive, (uint8_t*)buffer, bufSize); uint8_t* data = cursor.Copy(&bufSize); MOZ_ASSERT(data && bufSize == item->RealSize(), "error reading bundled font"); if (!data) { return; } hb_blob_t* blob = hb_blob_create(buffer, bufSize, HB_MEMORY_MODE_READONLY, buffer, free); AppendFacesFromBlob(aEntryName, kStandard, blob, aCache, 0, bufSize); hb_blob_destroy(blob); } // Called on each family after all fonts are added to the list; // if aSortFaces is true this will sort faces to give priority to "standard" // font files. static void FinalizeFamilyMemberList(nsCStringHashKey::KeyType aKey, RefPtr& aFamily, bool aSortFaces) { gfxFontFamily* family = aFamily.get(); family->SetHasStyles(true); if (aSortFaces) { family->SortAvailableFonts(); } family->CheckForSimpleFamily(); } void gfxFT2FontList::FindFonts() { MOZ_ASSERT(XRE_IsParentProcess()); // Chrome process: get the cached list (if any) if (!mFontNameCache) { mFontNameCache = MakeUnique(); } mFontNameCache->Init(); #if defined(MOZ_WIDGET_ANDROID) // Android API 29+ provides system font and font matcher API for native code. typedef void* (*_ASystemFontIterator_open)(); typedef void* (*_ASystemFontIterator_next)(void*); typedef void (*_ASystemFontIterator_close)(void*); typedef const char* (*_AFont_getFontFilePath)(const void*); typedef void (*_AFont_close)(void*); static _ASystemFontIterator_open systemFontIterator_open = nullptr; static _ASystemFontIterator_next systemFontIterator_next = nullptr; static _ASystemFontIterator_close systemFontIterator_close = nullptr; static _AFont_getFontFilePath font_getFontFilePath = nullptr; static _AFont_close font_close = nullptr; static bool firstTime = true; if (firstTime) { if (jni::GetAPIVersion() >= 29) { void* handle = dlopen("libandroid.so", RTLD_LAZY | RTLD_LOCAL); MOZ_ASSERT(handle); systemFontIterator_open = (_ASystemFontIterator_open)dlsym(handle, "ASystemFontIterator_open"); systemFontIterator_next = (_ASystemFontIterator_next)dlsym(handle, "ASystemFontIterator_next"); systemFontIterator_close = (_ASystemFontIterator_close)dlsym( handle, "ASystemFontIterator_close"); font_getFontFilePath = (_AFont_getFontFilePath)dlsym(handle, "AFont_getFontFilePath"); font_close = (_AFont_close)dlsym(handle, "AFont_close"); if (NS_WARN_IF(!systemFontIterator_next) || NS_WARN_IF(!systemFontIterator_close) || NS_WARN_IF(!font_getFontFilePath) || NS_WARN_IF(!font_close)) { // Since any functions aren't resolved, use old way to enumerate fonts. systemFontIterator_open = nullptr; } } firstTime = false; } bool useSystemFontAPI = !!systemFontIterator_open; if (useSystemFontAPI) { void* iter = systemFontIterator_open(); if (iter) { void* font = systemFontIterator_next(iter); while (font) { nsAutoCString path(font_getFontFilePath(font)); AppendFacesFromFontFile(path, mFontNameCache.get(), kStandard); font_close(font); font = systemFontIterator_next(iter); } systemFontIterator_close(iter); } else { useSystemFontAPI = false; } } if (!useSystemFontAPI) #endif { // ANDROID_ROOT is the root of the android system, typically /system; // font files are in /$ANDROID_ROOT/fonts/ nsCString root; char* androidRoot = PR_GetEnv("ANDROID_ROOT"); if (androidRoot) { root = androidRoot; } else { root = NS_LITERAL_CSTRING("/system"); } root.AppendLiteral("/fonts"); FindFontsInDir(root, mFontNameCache.get()); } // Look for fonts stored in omnijar, unless we're on a low-memory // device where we don't want to spend the RAM to decompress them. // (Prefs may disable this, or force-enable it even with low memory.) bool lowmem; nsCOMPtr mem = nsMemory::GetGlobalMemoryService(); if ((NS_SUCCEEDED(mem->IsLowMemoryPlatform(&lowmem)) && !lowmem && Preferences::GetBool("gfx.bundled_fonts.enabled")) || Preferences::GetBool("gfx.bundled_fonts.force-enabled")) { FindFontsInOmnijar(mFontNameCache.get()); } // Look for downloaded fonts in a profile-agnostic "fonts" directory. nsCOMPtr dirSvc = do_GetService(NS_DIRECTORY_SERVICE_CONTRACTID); if (dirSvc) { nsCOMPtr appDir; nsresult rv = dirSvc->Get(NS_XPCOM_CURRENT_PROCESS_DIR, NS_GET_IID(nsIFile), getter_AddRefs(appDir)); if (NS_SUCCEEDED(rv)) { appDir->AppendNative(NS_LITERAL_CSTRING("fonts")); nsCString localPath; if (NS_SUCCEEDED(appDir->GetNativePath(localPath))) { FindFontsInDir(localPath, mFontNameCache.get()); } } } // look for locally-added fonts in a "fonts" subdir of the profile nsCOMPtr localDir; nsresult rv = NS_GetSpecialDirectory(NS_APP_USER_PROFILE_LOCAL_50_DIR, getter_AddRefs(localDir)); if (NS_SUCCEEDED(rv) && NS_SUCCEEDED(localDir->Append(NS_LITERAL_STRING("fonts")))) { nsCString localPath; rv = localDir->GetNativePath(localPath); if (NS_SUCCEEDED(rv)) { FindFontsInDir(localPath, mFontNameCache.get()); } } mFontNameCache->DropStaleEntries(); if (!mFontNameCache->EntryCount()) { // if we can't find any usable fonts, we are doomed! MOZ_CRASH("No font files found"); } // Write out FontCache data if needed WriteCache(); } void gfxFT2FontList::WriteCache() { if (mFontNameCache) { mFontNameCache->WriteCache(); } mozilla::scache::StartupCache* cache = mozilla::scache::StartupCache::GetSingleton(); if (cache && mJarModifiedTime > 0) { const size_t bufSize = sizeof(mJarModifiedTime); auto buf = MakeUnique(bufSize); LittleEndian::writeInt64(buf.get(), mJarModifiedTime); LOG(("WriteCache: putting Jar, length %zu", bufSize)); cache->PutBuffer(JAR_LAST_MODIFED_TIME, std::move(buf), bufSize); } LOG(("Done with writecache")); } void gfxFT2FontList::FindFontsInDir(const nsCString& aDir, FontNameCache* aFNC) { static const char* sStandardFonts[] = {"DroidSans.ttf", "DroidSans-Bold.ttf", "DroidSerif-Regular.ttf", "DroidSerif-Bold.ttf", "DroidSerif-Italic.ttf", "DroidSerif-BoldItalic.ttf", "DroidSansMono.ttf", "DroidSansArabic.ttf", "DroidSansHebrew.ttf", "DroidSansThai.ttf", "MTLmr3m.ttf", "MTLc3m.ttf", "NanumGothic.ttf", "DroidSansJapanese.ttf", "DroidSansFallback.ttf"}; DIR* d = opendir(aDir.get()); if (!d) { return; } struct dirent* ent = nullptr; while ((ent = readdir(d)) != nullptr) { const char* ext = strrchr(ent->d_name, '.'); if (!ext) { continue; } if (strcasecmp(ext, ".ttf") == 0 || strcasecmp(ext, ".otf") == 0 || strcasecmp(ext, ".woff") == 0 || strcasecmp(ext, ".ttc") == 0) { bool isStdFont = false; for (unsigned int i = 0; i < ArrayLength(sStandardFonts) && !isStdFont; i++) { isStdFont = strcmp(sStandardFonts[i], ent->d_name) == 0; } nsCString s(aDir); s.Append('/'); s.Append(ent->d_name); // Add the face(s) from this file to our font list; // note that if we have cached info for this file in fnc, // and the file is unchanged, we won't actually need to read it. // If the file is new/changed, this will update the FontNameCache. AppendFacesFromFontFile(s, aFNC, isStdFont ? kStandard : kUnknown); } } closedir(d); } void gfxFT2FontList::AppendFaceFromFontListEntry(const FontListEntry& aFLE, StandardFile aStdFile) { FT2FontEntry* fe = FT2FontEntry::CreateFontEntry(aFLE); if (fe) { nsAutoCString key(aFLE.familyName()); BuildKeyNameFromFontName(key); fe->mStandardFace = (aStdFile == kStandard); RefPtr family = mFontFamilies.GetWeak(key); if (!family) { family = new FT2FontFamily(aFLE.familyName(), aFLE.visibility()); mFontFamilies.Put(key, RefPtr{family}); if (mSkipSpaceLookupCheckFamilies.Contains(key)) { family->SetSkipSpaceFeatureCheck(true); } if (mBadUnderlineFamilyNames.ContainsSorted(key)) { family->SetBadUnderlineFamily(); } } family->AddFontEntry(fe); fe->CheckForBrokenFont(family); } } void gfxFT2FontList::ReadSystemFontList(nsTArray* aList) { for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) { auto family = static_cast(iter.Data().get()); family->AddFacesToFontList(aList); } } static void LoadSkipSpaceLookupCheck( nsTHashtable& aSkipSpaceLookupCheck) { AutoTArray skiplist; gfxFontUtils::GetPrefsFontList( "font.whitelist.skip_default_features_space_check", skiplist); uint32_t numFonts = skiplist.Length(); for (uint32_t i = 0; i < numFonts; i++) { ToLowerCase(skiplist[i]); aSkipSpaceLookupCheck.PutEntry(skiplist[i]); } } nsresult gfxFT2FontList::InitFontListForPlatform() { LoadSkipSpaceLookupCheck(mSkipSpaceLookupCheckFamilies); if (XRE_IsParentProcess()) { // This will populate/update mFontNameCache and store it in the // startupCache for future startups. FindFonts(); // Finalize the families by sorting faces into standard order // and marking "simple" families. for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) { nsCStringHashKey::KeyType key = iter.Key(); RefPtr& family = iter.Data(); FinalizeFamilyMemberList(key, family, /* aSortFaces */ true); } return NS_OK; } // Content process: use font list passed from the chrome process via // the GetXPCOMProcessAttributes message. auto& fontList = dom::ContentChild::GetSingleton()->SystemFontList(); for (FontListEntry& fle : fontList) { // We don't need to identify "standard" font files here, // as the faces are already sorted. AppendFaceFromFontListEntry(fle, kUnknown); } // We don't need to sort faces (because they were already sorted by the // chrome process, so we just maintain the existing order) for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) { nsCStringHashKey::KeyType key = iter.Key(); RefPtr& family = iter.Data(); FinalizeFamilyMemberList(key, family, /* aSortFaces */ false); } LOG(("got font list from chrome process: %" PRIdPTR " faces in %" PRIu32 " families", fontList.Length(), mFontFamilies.Count())); fontList.Clear(); return NS_OK; } void gfxFT2FontList::InitSharedFontListForPlatform() { if (!XRE_IsParentProcess()) { // Content processes will access the shared-memory data created by the // parent, so don't need to scan for available fonts themselves. return; } // This will populate mFontNameCache with entries for all the available font // files, and record them in mFamilies (unshared list) or mFamilyInitData and // mFaceInitData (shared font list). FindFonts(); ApplyWhitelist(mFamilyInitData); mFamilyInitData.Sort(); mozilla::fontlist::FontList* list = SharedFontList(); list->SetFamilyNames(mFamilyInitData); auto families = list->Families(); for (uint32_t i = 0; i < mFamilyInitData.Length(); i++) { auto faceList = mFaceInitData.Get(mFamilyInitData[i].mKey); MOZ_ASSERT(faceList); families[i].AddFaces(list, *faceList); } mFamilyInitData.Clear(); mFaceInitData.Clear(); } gfxFontEntry* gfxFT2FontList::CreateFontEntry(fontlist::Face* aFace, const fontlist::Family* aFamily) { fontlist::FontList* list = SharedFontList(); nsAutoCString desc(aFace->mDescriptor.AsString(list)); FontListEntry fle(aFamily->DisplayName().AsString(list), desc, desc, aFace->mWeight.AsScalar(), aFace->mStretch.AsScalar(), aFace->mStyle.AsScalar(), aFace->mIndex, aFamily->Visibility()); FT2FontEntry* fe = FT2FontEntry::CreateFontEntry(fle); fe->mFixedPitch = aFace->mFixedPitch; fe->mIsBadUnderlineFont = aFamily->IsBadUnderlineFamily(); fe->mShmemFace = aFace; fe->mFamilyName = aFamily->DisplayName().AsString(list); fe->CheckForBrokenFont(aFamily->Key().AsString(list)); return fe; } // called for each family name, based on the assumption that the // first part of the full name is the family name gfxFontEntry* gfxFT2FontList::LookupLocalFont(const nsACString& aFontName, WeightRange aWeightForEntry, StretchRange aStretchForEntry, SlantStyleRange aStyleForEntry) { if (SharedFontList()) { return LookupInSharedFaceNameList(aFontName, aWeightForEntry, aStretchForEntry, aStyleForEntry); } // walk over list of names FT2FontEntry* fontEntry = nullptr; for (auto iter = mFontFamilies.Iter(); !iter.Done(); iter.Next()) { // Check family name, based on the assumption that the // first part of the full name is the family name RefPtr& fontFamily = iter.Data(); // does the family name match up to the length of the family name? const nsCString& family = fontFamily->Name(); const nsAutoCString fullNameFamily( Substring(aFontName, 0, family.Length())); // if so, iterate over faces in this family to see if there is a match if (family.Equals(fullNameFamily, nsCaseInsensitiveCStringComparator)) { nsTArray >& fontList = fontFamily->GetFontList(); int index, len = fontList.Length(); for (index = 0; index < len; index++) { gfxFontEntry* fe = fontList[index]; if (!fe) { continue; } if (fe->Name().Equals(aFontName, nsCaseInsensitiveCStringComparator)) { fontEntry = static_cast(fe); goto searchDone; } } } } searchDone: if (!fontEntry) { return nullptr; } // Clone the font entry so that we can then set its style descriptors // from the userfont entry rather than the actual font. // Ensure existence of mFTFace in the original entry RefPtr face = fontEntry->GetFTFace(true); if (!face) { return nullptr; } FT2FontEntry* fe = FT2FontEntry::CreateFontEntry( fontEntry->Name(), fontEntry->mFilename.get(), fontEntry->mFTFontIndex, nullptr); if (fe) { fe->mStyleRange = aStyleForEntry; fe->mWeightRange = aWeightForEntry; fe->mStretchRange = aStretchForEntry; fe->mIsLocalUserFont = true; } return fe; } FontFamily gfxFT2FontList::GetDefaultFontForPlatform( const gfxFontStyle* aStyle) { FontFamily ff; #if defined(MOZ_WIDGET_ANDROID) ff = FindFamily(NS_LITERAL_CSTRING("Roboto")); if (ff.IsNull()) { ff = FindFamily(NS_LITERAL_CSTRING("Droid Sans")); } #endif /* TODO: what about Qt or other platforms that may use this? */ return ff; } gfxFontEntry* gfxFT2FontList::MakePlatformFont(const nsACString& aFontName, WeightRange aWeightForEntry, StretchRange aStretchForEntry, SlantStyleRange aStyleForEntry, const uint8_t* aFontData, uint32_t aLength) { // The FT2 font needs the font data to persist, so we do NOT free it here // but instead pass ownership to the font entry. // Deallocation will happen later, when the font face is destroyed. return FT2FontEntry::CreateFontEntry(aFontName, aWeightForEntry, aStretchForEntry, aStyleForEntry, aFontData, aLength); } gfxFontFamily* gfxFT2FontList::CreateFontFamily( const nsACString& aName, FontVisibility aVisibility) const { return new FT2FontFamily(aName, aVisibility); } void gfxFT2FontList::WillShutdown() { LOG(("WillShutdown")); WriteCache(); mFontNameCache = nullptr; }