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-rw-r--r--layout/style/nsLayoutStylesheetCache.cpp1000
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diff --git a/layout/style/nsLayoutStylesheetCache.cpp b/layout/style/nsLayoutStylesheetCache.cpp
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+++ b/layout/style/nsLayoutStylesheetCache.cpp
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+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* vim: set ts=8 sts=2 et sw=2 tw=80: */
+/* 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 "nsLayoutStylesheetCache.h"
+
+#include "nsAppDirectoryServiceDefs.h"
+#include "mozilla/StyleSheetInlines.h"
+#include "mozilla/MemoryReporting.h"
+#include "mozilla/Preferences.h"
+#include "mozilla/StyleSheet.h"
+#include "mozilla/StyleSheetInlines.h"
+#include "mozilla/css/Loader.h"
+#include "mozilla/dom/SRIMetadata.h"
+#include "nsIConsoleService.h"
+#include "nsIFile.h"
+#include "nsNetUtil.h"
+#include "nsIObserverService.h"
+#include "nsServiceManagerUtils.h"
+#include "nsIXULRuntime.h"
+#include "nsPrintfCString.h"
+#include "nsXULAppAPI.h"
+
+// Includes for the crash report annotation in ErrorLoadingSheet.
+#ifdef MOZ_CRASHREPORTER
+#include "mozilla/Omnijar.h"
+#include "nsDirectoryService.h"
+#include "nsDirectoryServiceDefs.h"
+#include "nsExceptionHandler.h"
+#include "nsIChromeRegistry.h"
+#include "nsISimpleEnumerator.h"
+#include "nsISubstitutingProtocolHandler.h"
+#include "zlib.h"
+#include "nsZipArchive.h"
+#endif
+
+using namespace mozilla;
+using namespace mozilla::css;
+
+static bool sNumberControlEnabled;
+
+#define NUMBER_CONTROL_PREF "dom.forms.number"
+
+NS_IMPL_ISUPPORTS(
+ nsLayoutStylesheetCache, nsIObserver, nsIMemoryReporter)
+
+nsresult
+nsLayoutStylesheetCache::Observe(nsISupports* aSubject,
+ const char* aTopic,
+ const char16_t* aData)
+{
+ if (!strcmp(aTopic, "profile-before-change")) {
+ mUserContentSheet = nullptr;
+ mUserChromeSheet = nullptr;
+ }
+ else if (!strcmp(aTopic, "profile-do-change")) {
+ InitFromProfile();
+ }
+ else if (strcmp(aTopic, "chrome-flush-skin-caches") == 0 ||
+ strcmp(aTopic, "chrome-flush-caches") == 0) {
+ mScrollbarsSheet = nullptr;
+ mFormsSheet = nullptr;
+ mNumberControlSheet = nullptr;
+ }
+ else {
+ NS_NOTREACHED("Unexpected observer topic.");
+ }
+ return NS_OK;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::ScrollbarsSheet()
+{
+ if (!mScrollbarsSheet) {
+ // Scrollbars don't need access to unsafe rules
+ LoadSheetURL("chrome://global/skin/scrollbars.css",
+ &mScrollbarsSheet, eAuthorSheetFeatures, eCrash);
+ }
+
+ return mScrollbarsSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::FormsSheet()
+{
+ if (!mFormsSheet) {
+ // forms.css needs access to unsafe rules
+ LoadSheetURL("resource://gre-resources/forms.css",
+ &mFormsSheet, eAgentSheetFeatures, eCrash);
+ }
+
+ return mFormsSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::NumberControlSheet()
+{
+ if (!sNumberControlEnabled) {
+ return nullptr;
+ }
+
+ if (!mNumberControlSheet) {
+ LoadSheetURL("resource://gre-resources/number-control.css",
+ &mNumberControlSheet, eAgentSheetFeatures, eCrash);
+ }
+
+ return mNumberControlSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::UserContentSheet()
+{
+ return mUserContentSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::UserChromeSheet()
+{
+ return mUserChromeSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::UASheet()
+{
+ if (!mUASheet) {
+ LoadSheetURL("resource://gre-resources/ua.css",
+ &mUASheet, eAgentSheetFeatures, eCrash);
+ }
+
+ return mUASheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::HTMLSheet()
+{
+ if (!mHTMLSheet) {
+ LoadSheetURL("resource://gre-resources/html.css",
+ &mHTMLSheet, eAgentSheetFeatures, eCrash);
+ }
+
+ return mHTMLSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::MinimalXULSheet()
+{
+ return mMinimalXULSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::XULSheet()
+{
+ return mXULSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::QuirkSheet()
+{
+ return mQuirkSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::SVGSheet()
+{
+ return mSVGSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::MathMLSheet()
+{
+ if (!mMathMLSheet) {
+ LoadSheetURL("resource://gre-resources/mathml.css",
+ &mMathMLSheet, eAgentSheetFeatures, eCrash);
+ }
+
+ return mMathMLSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::CounterStylesSheet()
+{
+ return mCounterStylesSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::NoScriptSheet()
+{
+ if (!mNoScriptSheet) {
+ LoadSheetURL("resource://gre-resources/noscript.css",
+ &mNoScriptSheet, eAgentSheetFeatures, eCrash);
+ }
+
+ return mNoScriptSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::NoFramesSheet()
+{
+ if (!mNoFramesSheet) {
+ LoadSheetURL("resource://gre-resources/noframes.css",
+ &mNoFramesSheet, eAgentSheetFeatures, eCrash);
+ }
+
+ return mNoFramesSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::ChromePreferenceSheet(nsPresContext* aPresContext)
+{
+ if (!mChromePreferenceSheet) {
+ BuildPreferenceSheet(&mChromePreferenceSheet, aPresContext);
+ }
+
+ return mChromePreferenceSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::ContentPreferenceSheet(nsPresContext* aPresContext)
+{
+ if (!mContentPreferenceSheet) {
+ BuildPreferenceSheet(&mContentPreferenceSheet, aPresContext);
+ }
+
+ return mContentPreferenceSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::ContentEditableSheet()
+{
+ if (!mContentEditableSheet) {
+ LoadSheetURL("resource://gre/res/contenteditable.css",
+ &mContentEditableSheet, eAgentSheetFeatures, eCrash);
+ }
+
+ return mContentEditableSheet;
+}
+
+StyleSheet*
+nsLayoutStylesheetCache::DesignModeSheet()
+{
+ if (!mDesignModeSheet) {
+ LoadSheetURL("resource://gre/res/designmode.css",
+ &mDesignModeSheet, eAgentSheetFeatures, eCrash);
+ }
+
+ return mDesignModeSheet;
+}
+
+void
+nsLayoutStylesheetCache::Shutdown()
+{
+ gCSSLoader_Gecko = nullptr;
+ gCSSLoader_Servo = nullptr;
+ gStyleCache_Gecko = nullptr;
+ gStyleCache_Servo = nullptr;
+ MOZ_ASSERT(!gUserContentSheetURL, "Got the URL but never used?");
+}
+
+void
+nsLayoutStylesheetCache::SetUserContentCSSURL(nsIURI* aURI)
+{
+ MOZ_ASSERT(XRE_IsContentProcess(), "Only used in content processes.");
+ gUserContentSheetURL = aURI;
+}
+
+MOZ_DEFINE_MALLOC_SIZE_OF(LayoutStylesheetCacheMallocSizeOf)
+
+NS_IMETHODIMP
+nsLayoutStylesheetCache::CollectReports(nsIHandleReportCallback* aHandleReport,
+ nsISupports* aData, bool aAnonymize)
+{
+ MOZ_COLLECT_REPORT(
+ "explicit/layout/style-sheet-cache", KIND_HEAP, UNITS_BYTES,
+ SizeOfIncludingThis(LayoutStylesheetCacheMallocSizeOf),
+ "Memory used for some built-in style sheets.");
+
+ return NS_OK;
+}
+
+
+size_t
+nsLayoutStylesheetCache::SizeOfIncludingThis(mozilla::MallocSizeOf aMallocSizeOf) const
+{
+ size_t n = aMallocSizeOf(this);
+
+ #define MEASURE(s) n += s ? s->SizeOfIncludingThis(aMallocSizeOf) : 0;
+
+ MEASURE(mChromePreferenceSheet);
+ MEASURE(mContentEditableSheet);
+ MEASURE(mContentPreferenceSheet);
+ MEASURE(mCounterStylesSheet);
+ MEASURE(mDesignModeSheet);
+ MEASURE(mFormsSheet);
+ MEASURE(mHTMLSheet);
+ MEASURE(mMathMLSheet);
+ MEASURE(mMinimalXULSheet);
+ MEASURE(mNoFramesSheet);
+ MEASURE(mNoScriptSheet);
+ MEASURE(mNumberControlSheet);
+ MEASURE(mQuirkSheet);
+ MEASURE(mSVGSheet);
+ MEASURE(mScrollbarsSheet);
+ MEASURE(mUASheet);
+ MEASURE(mUserChromeSheet);
+ MEASURE(mUserContentSheet);
+ MEASURE(mXULSheet);
+
+ // Measurement of the following members may be added later if DMD finds it is
+ // worthwhile:
+ // - gCSSLoader_Gecko
+ // - gCSSLoader_Servo
+
+ return n;
+}
+
+nsLayoutStylesheetCache::nsLayoutStylesheetCache(StyleBackendType aType)
+ : mBackendType(aType)
+{
+ nsCOMPtr<nsIObserverService> obsSvc =
+ mozilla::services::GetObserverService();
+ NS_ASSERTION(obsSvc, "No global observer service?");
+
+ if (obsSvc) {
+ obsSvc->AddObserver(this, "profile-before-change", false);
+ obsSvc->AddObserver(this, "profile-do-change", false);
+ obsSvc->AddObserver(this, "chrome-flush-skin-caches", false);
+ obsSvc->AddObserver(this, "chrome-flush-caches", false);
+ }
+
+ InitFromProfile();
+
+ // And make sure that we load our UA sheets. No need to do this
+ // per-profile, since they're profile-invariant.
+ LoadSheetURL("resource://gre-resources/counterstyles.css",
+ &mCounterStylesSheet, eAgentSheetFeatures, eCrash);
+ LoadSheetURL("chrome://global/content/minimal-xul.css",
+ &mMinimalXULSheet, eAgentSheetFeatures, eCrash);
+ LoadSheetURL("resource://gre-resources/quirk.css",
+ &mQuirkSheet, eAgentSheetFeatures, eCrash);
+ LoadSheetURL("resource://gre/res/svg.css",
+ &mSVGSheet, eAgentSheetFeatures, eCrash);
+ LoadSheetURL("chrome://global/content/xul.css",
+ &mXULSheet, eAgentSheetFeatures, eCrash);
+
+ if (gUserContentSheetURL) {
+ MOZ_ASSERT(XRE_IsContentProcess(), "Only used in content processes.");
+ LoadSheet(gUserContentSheetURL, &mUserContentSheet, eUserSheetFeatures, eLogToConsole);
+ gUserContentSheetURL = nullptr;
+ }
+
+ // The remaining sheets are created on-demand do to their use being rarer
+ // (which helps save memory for Firefox OS apps) or because they need to
+ // be re-loadable in DependentPrefChanged.
+}
+
+nsLayoutStylesheetCache::~nsLayoutStylesheetCache()
+{
+ mozilla::UnregisterWeakMemoryReporter(this);
+}
+
+void
+nsLayoutStylesheetCache::InitMemoryReporter()
+{
+ mozilla::RegisterWeakMemoryReporter(this);
+}
+
+/* static */ nsLayoutStylesheetCache*
+nsLayoutStylesheetCache::For(StyleBackendType aType)
+{
+ MOZ_ASSERT(NS_IsMainThread());
+
+ bool mustInit = !gStyleCache_Gecko && !gStyleCache_Servo;
+ auto& cache = aType == StyleBackendType::Gecko ? gStyleCache_Gecko :
+ gStyleCache_Servo;
+
+ if (!cache) {
+ cache = new nsLayoutStylesheetCache(aType);
+ cache->InitMemoryReporter();
+ }
+
+ if (mustInit) {
+ // Initialization that only needs to be done once for both
+ // nsLayoutStylesheetCaches.
+
+ Preferences::AddBoolVarCache(&sNumberControlEnabled, NUMBER_CONTROL_PREF,
+ true);
+
+ // For each pref that controls a CSS feature that a UA style sheet depends
+ // on (such as a pref that enables a property that a UA style sheet uses),
+ // register DependentPrefChanged as a callback to ensure that the relevant
+ // style sheets will be re-parsed.
+ // Preferences::RegisterCallback(&DependentPrefChanged,
+ // "layout.css.example-pref.enabled");
+ Preferences::RegisterCallback(&DependentPrefChanged,
+ "layout.css.grid.enabled");
+ Preferences::RegisterCallback(&DependentPrefChanged,
+ "dom.details_element.enabled");
+ }
+
+ return cache;
+}
+
+void
+nsLayoutStylesheetCache::InitFromProfile()
+{
+ nsCOMPtr<nsIXULRuntime> appInfo = do_GetService("@mozilla.org/xre/app-info;1");
+ if (appInfo) {
+ bool inSafeMode = false;
+ appInfo->GetInSafeMode(&inSafeMode);
+ if (inSafeMode)
+ return;
+ }
+ nsCOMPtr<nsIFile> contentFile;
+ nsCOMPtr<nsIFile> chromeFile;
+
+ NS_GetSpecialDirectory(NS_APP_USER_CHROME_DIR,
+ getter_AddRefs(contentFile));
+ if (!contentFile) {
+ // if we don't have a profile yet, that's OK!
+ return;
+ }
+
+ contentFile->Clone(getter_AddRefs(chromeFile));
+ if (!chromeFile) return;
+
+ contentFile->Append(NS_LITERAL_STRING("userContent.css"));
+ chromeFile->Append(NS_LITERAL_STRING("userChrome.css"));
+
+ LoadSheetFile(contentFile, &mUserContentSheet, eUserSheetFeatures, eLogToConsole);
+ LoadSheetFile(chromeFile, &mUserChromeSheet, eUserSheetFeatures, eLogToConsole);
+}
+
+void
+nsLayoutStylesheetCache::LoadSheetURL(const char* aURL,
+ RefPtr<StyleSheet>* aSheet,
+ SheetParsingMode aParsingMode,
+ FailureAction aFailureAction)
+{
+ nsCOMPtr<nsIURI> uri;
+ NS_NewURI(getter_AddRefs(uri), aURL);
+ LoadSheet(uri, aSheet, aParsingMode, aFailureAction);
+ if (!aSheet) {
+ NS_ERROR(nsPrintfCString("Could not load %s", aURL).get());
+ }
+}
+
+void
+nsLayoutStylesheetCache::LoadSheetFile(nsIFile* aFile,
+ RefPtr<StyleSheet>* aSheet,
+ SheetParsingMode aParsingMode,
+ FailureAction aFailureAction)
+{
+ bool exists = false;
+ aFile->Exists(&exists);
+
+ if (!exists) return;
+
+ nsCOMPtr<nsIURI> uri;
+ NS_NewFileURI(getter_AddRefs(uri), aFile);
+
+ LoadSheet(uri, aSheet, aParsingMode, aFailureAction);
+}
+
+#ifdef MOZ_CRASHREPORTER
+static inline nsresult
+ComputeCRC32(nsIFile* aFile, uint32_t* aResult)
+{
+ PRFileDesc* fd;
+ nsresult rv = aFile->OpenNSPRFileDesc(PR_RDONLY, 0, &fd);
+ NS_ENSURE_SUCCESS(rv, rv);
+
+ uint32_t crc = crc32(0, nullptr, 0);
+
+ unsigned char buf[512];
+ int32_t n;
+ while ((n = PR_Read(fd, buf, sizeof(buf))) > 0) {
+ crc = crc32(crc, buf, n);
+ }
+ PR_Close(fd);
+
+ if (n < 0) {
+ return NS_ERROR_FAILURE;
+ }
+
+ *aResult = crc;
+ return NS_OK;
+}
+
+static void
+ListInterestingFiles(nsString& aAnnotation, nsIFile* aFile,
+ const nsTArray<nsString>& aInterestingFilenames)
+{
+ nsString filename;
+ aFile->GetLeafName(filename);
+ for (const nsString& interestingFilename : aInterestingFilenames) {
+ if (interestingFilename == filename) {
+ nsString path;
+ aFile->GetPath(path);
+ aAnnotation.AppendLiteral(" ");
+ aAnnotation.Append(path);
+ aAnnotation.AppendLiteral(" (");
+ int64_t size;
+ if (NS_SUCCEEDED(aFile->GetFileSize(&size))) {
+ aAnnotation.AppendPrintf("%ld", size);
+ } else {
+ aAnnotation.AppendLiteral("???");
+ }
+ aAnnotation.AppendLiteral(" bytes, crc32 = ");
+ uint32_t crc;
+ nsresult rv = ComputeCRC32(aFile, &crc);
+ if (NS_SUCCEEDED(rv)) {
+ aAnnotation.AppendPrintf("0x%08x)\n", crc);
+ } else {
+ aAnnotation.AppendPrintf("error 0x%08x)\n", uint32_t(rv));
+ }
+ return;
+ }
+ }
+
+ bool isDir = false;
+ aFile->IsDirectory(&isDir);
+
+ if (!isDir) {
+ return;
+ }
+
+ nsCOMPtr<nsISimpleEnumerator> entries;
+ if (NS_FAILED(aFile->GetDirectoryEntries(getter_AddRefs(entries)))) {
+ aAnnotation.AppendLiteral(" (failed to enumerated directory)\n");
+ return;
+ }
+
+ for (;;) {
+ bool hasMore = false;
+ if (NS_FAILED(entries->HasMoreElements(&hasMore))) {
+ aAnnotation.AppendLiteral(" (failed during directory enumeration)\n");
+ return;
+ }
+ if (!hasMore) {
+ break;
+ }
+
+ nsCOMPtr<nsISupports> entry;
+ if (NS_FAILED(entries->GetNext(getter_AddRefs(entry)))) {
+ aAnnotation.AppendLiteral(" (failed during directory enumeration)\n");
+ return;
+ }
+
+ nsCOMPtr<nsIFile> file = do_QueryInterface(entry);
+ if (file) {
+ ListInterestingFiles(aAnnotation, file, aInterestingFilenames);
+ }
+ }
+}
+
+// Generate a crash report annotation to help debug issues with style
+// sheets failing to load (bug 1194856).
+static void
+AnnotateCrashReport(nsIURI* aURI)
+{
+ nsAutoCString spec;
+ nsAutoCString scheme;
+ nsDependentCSubstring filename;
+ if (aURI) {
+ spec = aURI->GetSpecOrDefault();
+ aURI->GetScheme(scheme);
+ int32_t i = spec.RFindChar('/');
+ if (i != -1) {
+ filename.Rebind(spec, i + 1);
+ }
+ }
+
+ nsString annotation;
+
+ // The URL of the sheet that failed to load.
+ annotation.AppendLiteral("Error loading sheet: ");
+ annotation.Append(NS_ConvertUTF8toUTF16(spec).get());
+ annotation.Append('\n');
+
+ annotation.AppendLiteral("NS_ERROR_FILE_CORRUPTION reason: ");
+ if (nsZipArchive::sFileCorruptedReason) {
+ annotation.Append(NS_ConvertUTF8toUTF16(nsZipArchive::sFileCorruptedReason).get());
+ annotation.Append('\n');
+ } else {
+ annotation.AppendLiteral("(none)\n");
+ }
+
+ // The jar: or file: URL that the sheet's resource: or chrome: URL
+ // resolves to.
+ if (scheme.EqualsLiteral("resource")) {
+ annotation.AppendLiteral("Real location: ");
+ nsCOMPtr<nsISubstitutingProtocolHandler> handler;
+ nsCOMPtr<nsIIOService> io(do_GetIOService());
+ if (io) {
+ nsCOMPtr<nsIProtocolHandler> ph;
+ io->GetProtocolHandler(scheme.get(), getter_AddRefs(ph));
+ if (ph) {
+ handler = do_QueryInterface(ph);
+ }
+ }
+ if (!handler) {
+ annotation.AppendLiteral("(ResolveURI failed)\n");
+ } else {
+ nsAutoCString resolvedSpec;
+ handler->ResolveURI(aURI, resolvedSpec);
+ annotation.Append(NS_ConvertUTF8toUTF16(resolvedSpec));
+ annotation.Append('\n');
+ }
+ } else if (scheme.EqualsLiteral("chrome")) {
+ annotation.AppendLiteral("Real location: ");
+ nsCOMPtr<nsIChromeRegistry> reg =
+ mozilla::services::GetChromeRegistryService();
+ if (!reg) {
+ annotation.AppendLiteral("(no chrome registry)\n");
+ } else {
+ nsCOMPtr<nsIURI> resolvedURI;
+ reg->ConvertChromeURL(aURI, getter_AddRefs(resolvedURI));
+ if (!resolvedURI) {
+ annotation.AppendLiteral("(ConvertChromeURL failed)\n");
+ } else {
+ annotation.Append(
+ NS_ConvertUTF8toUTF16(resolvedURI->GetSpecOrDefault()));
+ annotation.Append('\n');
+ }
+ }
+ }
+
+ nsTArray<nsString> interestingFiles;
+ interestingFiles.AppendElement(NS_LITERAL_STRING("chrome.manifest"));
+ interestingFiles.AppendElement(NS_LITERAL_STRING("omni.ja"));
+ interestingFiles.AppendElement(NS_ConvertUTF8toUTF16(filename));
+
+ annotation.AppendLiteral("GRE directory: ");
+ nsCOMPtr<nsIFile> file;
+ nsDirectoryService::gService->Get(NS_GRE_DIR, NS_GET_IID(nsIFile),
+ getter_AddRefs(file));
+ if (file) {
+ // The Firefox installation directory.
+ nsString path;
+ file->GetPath(path);
+ annotation.Append(path);
+ annotation.Append('\n');
+
+ // List interesting files -- any chrome.manifest or omni.ja file or any file
+ // whose name is the sheet's filename -- under the Firefox installation
+ // directory.
+ annotation.AppendLiteral("Interesting files in the GRE directory:\n");
+ ListInterestingFiles(annotation, file, interestingFiles);
+
+ // If the Firefox installation directory has a chrome.manifest file, let's
+ // see what's in it.
+ file->Append(NS_LITERAL_STRING("chrome.manifest"));
+ bool exists = false;
+ file->Exists(&exists);
+ if (exists) {
+ annotation.AppendLiteral("Contents of chrome.manifest:\n[[[\n");
+ PRFileDesc* fd;
+ if (NS_SUCCEEDED(file->OpenNSPRFileDesc(PR_RDONLY, 0, &fd))) {
+ nsCString contents;
+ char buf[512];
+ int32_t n;
+ while ((n = PR_Read(fd, buf, sizeof(buf))) > 0) {
+ contents.Append(buf, n);
+ }
+ if (n < 0) {
+ annotation.AppendLiteral(" (error while reading)\n");
+ } else {
+ annotation.Append(NS_ConvertUTF8toUTF16(contents));
+ }
+ PR_Close(fd);
+ }
+ annotation.AppendLiteral("]]]\n");
+ }
+ } else {
+ annotation.AppendLiteral("(none)\n");
+ }
+
+ // The jar: or file: URL prefix that chrome: and resource: URLs get translated
+ // to.
+ annotation.AppendLiteral("GRE omnijar URI string: ");
+ nsCString uri;
+ nsresult rv = Omnijar::GetURIString(Omnijar::GRE, uri);
+ if (NS_FAILED(rv)) {
+ annotation.AppendLiteral("(failed)\n");
+ } else {
+ annotation.Append(NS_ConvertUTF8toUTF16(uri));
+ annotation.Append('\n');
+ }
+
+ RefPtr<nsZipArchive> zip = Omnijar::GetReader(Omnijar::GRE);
+ if (zip) {
+ // List interesting files in the GRE omnijar.
+ annotation.AppendLiteral("Interesting files in the GRE omnijar:\n");
+ nsZipFind* find;
+ rv = zip->FindInit(nullptr, &find);
+ if (NS_FAILED(rv)) {
+ annotation.AppendPrintf(" (FindInit failed with 0x%08x)\n", rv);
+ } else if (!find) {
+ annotation.AppendLiteral(" (FindInit returned null)\n");
+ } else {
+ const char* result;
+ uint16_t len;
+ while (NS_SUCCEEDED(find->FindNext(&result, &len))) {
+ nsCString itemPathname;
+ nsString itemFilename;
+ itemPathname.Append(result, len);
+ int32_t i = itemPathname.RFindChar('/');
+ if (i != -1) {
+ itemFilename = NS_ConvertUTF8toUTF16(Substring(itemPathname, i + 1));
+ }
+ for (const nsString& interestingFile : interestingFiles) {
+ if (interestingFile == itemFilename) {
+ annotation.AppendLiteral(" ");
+ annotation.Append(NS_ConvertUTF8toUTF16(itemPathname));
+ nsZipItem* item = zip->GetItem(itemPathname.get());
+ if (!item) {
+ annotation.AppendLiteral(" (GetItem failed)\n");
+ } else {
+ annotation.AppendPrintf(" (%d bytes, crc32 = 0x%08x)\n",
+ item->RealSize(),
+ item->CRC32());
+ }
+ break;
+ }
+ }
+ }
+ delete find;
+ }
+ } else {
+ annotation.AppendLiteral("No GRE omnijar\n");
+ }
+
+ CrashReporter::AnnotateCrashReport(NS_LITERAL_CSTRING("SheetLoadFailure"),
+ NS_ConvertUTF16toUTF8(annotation));
+}
+#endif
+
+static void
+ErrorLoadingSheet(nsIURI* aURI, const char* aMsg, FailureAction aFailureAction)
+{
+ nsPrintfCString errorMessage("%s loading built-in stylesheet '%s'",
+ aMsg,
+ aURI ? aURI->GetSpecOrDefault().get() : "");
+ if (aFailureAction == eLogToConsole) {
+ nsCOMPtr<nsIConsoleService> cs = do_GetService(NS_CONSOLESERVICE_CONTRACTID);
+ if (cs) {
+ cs->LogStringMessage(NS_ConvertUTF8toUTF16(errorMessage).get());
+ return;
+ }
+ }
+
+#ifdef MOZ_CRASHREPORTER
+ AnnotateCrashReport(aURI);
+#endif
+ NS_RUNTIMEABORT(errorMessage.get());
+}
+
+void
+nsLayoutStylesheetCache::LoadSheet(nsIURI* aURI,
+ RefPtr<StyleSheet>* aSheet,
+ SheetParsingMode aParsingMode,
+ FailureAction aFailureAction)
+{
+ if (!aURI) {
+ ErrorLoadingSheet(aURI, "null URI", eCrash);
+ return;
+ }
+
+ auto& loader = mBackendType == StyleBackendType::Gecko ?
+ gCSSLoader_Gecko :
+ gCSSLoader_Servo;
+
+ if (!loader) {
+ loader = new mozilla::css::Loader(mBackendType);
+ if (!loader) {
+ ErrorLoadingSheet(aURI, "no Loader", eCrash);
+ return;
+ }
+ }
+
+#ifdef MOZ_CRASHREPORTER
+ nsZipArchive::sFileCorruptedReason = nullptr;
+#endif
+ nsresult rv = loader->LoadSheetSync(aURI, aParsingMode, true, aSheet);
+ if (NS_FAILED(rv)) {
+ ErrorLoadingSheet(aURI,
+ nsPrintfCString("LoadSheetSync failed with error %x", rv).get(),
+ aFailureAction);
+ }
+}
+
+/* static */ void
+nsLayoutStylesheetCache::InvalidateSheet(RefPtr<StyleSheet>* aGeckoSheet,
+ RefPtr<StyleSheet>* aServoSheet)
+{
+ MOZ_ASSERT(gCSSLoader_Gecko || gCSSLoader_Servo,
+ "pref changed before we loaded a sheet?");
+
+ const bool gotGeckoSheet = aGeckoSheet && *aGeckoSheet;
+ const bool gotServoSheet = aServoSheet && *aServoSheet;
+
+ // Make sure sheets have the expected types
+ MOZ_ASSERT(!gotGeckoSheet || (*aGeckoSheet)->IsGecko());
+ MOZ_ASSERT(!gotServoSheet || (*aServoSheet)->IsServo());
+ // Make sure the URIs match
+ MOZ_ASSERT(!gotServoSheet || !gotGeckoSheet ||
+ (*aGeckoSheet)->GetSheetURI() == (*aServoSheet)->GetSheetURI(),
+ "Sheets passed should have the same URI");
+
+ nsIURI* uri;
+ if (gotGeckoSheet) {
+ uri = (*aGeckoSheet)->GetSheetURI();
+ } else if (gotServoSheet) {
+ uri = (*aServoSheet)->GetSheetURI();
+ } else {
+ return;
+ }
+
+ if (gCSSLoader_Gecko) {
+ gCSSLoader_Gecko->ObsoleteSheet(uri);
+ }
+ if (gCSSLoader_Servo) {
+ gCSSLoader_Servo->ObsoleteSheet(uri);
+ }
+ if (gotGeckoSheet) {
+ *aGeckoSheet = nullptr;
+ }
+ if (gotServoSheet) {
+ *aServoSheet = nullptr;
+ }
+}
+
+/* static */ void
+nsLayoutStylesheetCache::DependentPrefChanged(const char* aPref, void* aData)
+{
+ MOZ_ASSERT(gStyleCache_Gecko || gStyleCache_Servo,
+ "pref changed after shutdown?");
+
+ // Cause any UA style sheets whose parsing depends on the value of prefs
+ // to be re-parsed by dropping the sheet from gCSSLoader_{Gecko,Servo}'s cache
+ // then setting our cached sheet pointer to null. This will only work for
+ // sheets that are loaded lazily.
+
+#define INVALIDATE(sheet_) \
+ InvalidateSheet(gStyleCache_Gecko ? &gStyleCache_Gecko->sheet_ : nullptr, \
+ gStyleCache_Servo ? &gStyleCache_Servo->sheet_ : nullptr);
+
+ INVALIDATE(mUASheet); // for layout.css.grid.enabled
+ INVALIDATE(mHTMLSheet); // for dom.details_element.enabled
+
+#undef INVALIDATE
+}
+
+/* static */ void
+nsLayoutStylesheetCache::InvalidatePreferenceSheets()
+{
+ if (gStyleCache_Gecko) {
+ gStyleCache_Gecko->mContentPreferenceSheet = nullptr;
+ gStyleCache_Gecko->mChromePreferenceSheet = nullptr;
+ }
+ if (gStyleCache_Servo) {
+ gStyleCache_Servo->mContentPreferenceSheet = nullptr;
+ gStyleCache_Servo->mChromePreferenceSheet = nullptr;
+ }
+}
+
+void
+nsLayoutStylesheetCache::BuildPreferenceSheet(RefPtr<StyleSheet>* aSheet,
+ nsPresContext* aPresContext)
+{
+ if (mBackendType == StyleBackendType::Gecko) {
+ *aSheet = new CSSStyleSheet(eAgentSheetFeatures, CORS_NONE,
+ mozilla::net::RP_Default);
+ } else {
+ *aSheet = new ServoStyleSheet(eAgentSheetFeatures, CORS_NONE,
+ mozilla::net::RP_Default, dom::SRIMetadata());
+ }
+
+ StyleSheet* sheet = *aSheet;
+
+ nsCOMPtr<nsIURI> uri;
+ NS_NewURI(getter_AddRefs(uri), "about:PreferenceStyleSheet", nullptr);
+ MOZ_ASSERT(uri, "URI creation shouldn't fail");
+
+ sheet->SetURIs(uri, uri, uri);
+ sheet->SetComplete();
+
+ static const uint32_t kPreallocSize = 1024;
+
+ nsString sheetText;
+ sheetText.SetCapacity(kPreallocSize);
+
+#define NS_GET_R_G_B(color_) \
+ NS_GET_R(color_), NS_GET_G(color_), NS_GET_B(color_)
+
+ sheetText.AppendLiteral(
+ "@namespace url(http://www.w3.org/1999/xhtml);\n"
+ "@namespace svg url(http://www.w3.org/2000/svg);\n");
+
+ // Rules for link styling.
+ nscolor linkColor = aPresContext->DefaultLinkColor();
+ nscolor activeColor = aPresContext->DefaultActiveLinkColor();
+ nscolor visitedColor = aPresContext->DefaultVisitedLinkColor();
+
+ sheetText.AppendPrintf(
+ "*|*:link { color: #%02x%02x%02x; }\n"
+ "*|*:any-link:active { color: #%02x%02x%02x; }\n"
+ "*|*:visited { color: #%02x%02x%02x; }\n",
+ NS_GET_R_G_B(linkColor),
+ NS_GET_R_G_B(activeColor),
+ NS_GET_R_G_B(visitedColor));
+
+ bool underlineLinks =
+ aPresContext->GetCachedBoolPref(kPresContext_UnderlineLinks);
+ sheetText.AppendPrintf(
+ "*|*:any-link%s { text-decoration: %s; }\n",
+ underlineLinks ? ":not(svg|a)" : "",
+ underlineLinks ? "underline" : "none");
+
+ // Rules for focus styling.
+
+ bool focusRingOnAnything = aPresContext->GetFocusRingOnAnything();
+ uint8_t focusRingWidth = aPresContext->FocusRingWidth();
+ uint8_t focusRingStyle = aPresContext->GetFocusRingStyle();
+
+ if ((focusRingWidth != 1 && focusRingWidth <= 4) || focusRingOnAnything) {
+ if (focusRingWidth != 1) {
+ // If the focus ring width is different from the default, fix buttons
+ // with rings.
+ sheetText.AppendPrintf(
+ "button::-moz-focus-inner, input[type=\"reset\"]::-moz-focus-inner, "
+ "input[type=\"button\"]::-moz-focus-inner, "
+ "input[type=\"submit\"]::-moz-focus-inner { "
+ "padding: 1px 2px 1px 2px; "
+ "border: %dpx %s transparent !important; }\n",
+ focusRingWidth,
+ focusRingStyle == 0 ? "solid" : "dotted");
+
+ sheetText.AppendLiteral(
+ "button:focus::-moz-focus-inner, "
+ "input[type=\"reset\"]:focus::-moz-focus-inner, "
+ "input[type=\"button\"]:focus::-moz-focus-inner, "
+ "input[type=\"submit\"]:focus::-moz-focus-inner { "
+ "border-color: ButtonText !important; }\n");
+ }
+
+ sheetText.AppendPrintf(
+ "%s { outline: %dpx %s !important; %s}\n",
+ focusRingOnAnything ?
+ ":focus" :
+ "*|*:link:focus, *|*:visited:focus",
+ focusRingWidth,
+ focusRingStyle == 0 ? // solid
+ "solid -moz-mac-focusring" : "dotted WindowText",
+ focusRingStyle == 0 ? // solid
+ "-moz-outline-radius: 3px; outline-offset: 1px; " : "");
+ }
+
+ if (aPresContext->GetUseFocusColors()) {
+ nscolor focusText = aPresContext->FocusTextColor();
+ nscolor focusBG = aPresContext->FocusBackgroundColor();
+ sheetText.AppendPrintf(
+ "*:focus, *:focus > font { color: #%02x%02x%02x !important; "
+ "background-color: #%02x%02x%02x !important; }\n",
+ NS_GET_R_G_B(focusText),
+ NS_GET_R_G_B(focusBG));
+ }
+
+ NS_ASSERTION(sheetText.Length() <= kPreallocSize,
+ "kPreallocSize should be big enough to build preference style "
+ "sheet without reallocation");
+
+ if (sheet->IsGecko()) {
+ sheet->AsGecko()->ReparseSheet(sheetText);
+ } else {
+ nsresult rv = sheet->AsServo()->ParseSheet(sheetText, uri, uri, nullptr, 0);
+ // Parsing the about:PreferenceStyleSheet URI can only fail on OOM. If we
+ // are OOM before we parsed any documents we might as well abort.
+ MOZ_RELEASE_ASSERT(NS_SUCCEEDED(rv));
+ }
+
+#undef NS_GET_R_G_B
+}
+
+mozilla::StaticRefPtr<nsLayoutStylesheetCache>
+nsLayoutStylesheetCache::gStyleCache_Gecko;
+
+mozilla::StaticRefPtr<nsLayoutStylesheetCache>
+nsLayoutStylesheetCache::gStyleCache_Servo;
+
+mozilla::StaticRefPtr<mozilla::css::Loader>
+nsLayoutStylesheetCache::gCSSLoader_Gecko;
+
+mozilla::StaticRefPtr<mozilla::css::Loader>
+nsLayoutStylesheetCache::gCSSLoader_Servo;
+
+mozilla::StaticRefPtr<nsIURI>
+nsLayoutStylesheetCache::gUserContentSheetURL;
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-20 01:11:07 +0000