mirror of
https://github.com/mozilla/gecko-dev.git
synced 2024-12-09 06:22:08 +00:00
dbd89b9ce3
Differential Revision: https://phabricator.services.mozilla.com/D2699
668 lines
17 KiB
C++
668 lines
17 KiB
C++
/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=2 sw=2 et tw=78: */
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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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#include "nsChromeRegistry.h"
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#include "nsChromeRegistryChrome.h"
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#include "nsChromeRegistryContent.h"
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#include "nsCOMPtr.h"
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#include "nsError.h"
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#include "nsEscape.h"
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#include "nsNetUtil.h"
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#include "nsString.h"
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#include "nsQueryObject.h"
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#include "mozilla/dom/URL.h"
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#include "nsDOMWindowList.h"
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#include "nsIConsoleService.h"
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#include "nsIDocument.h"
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#include "nsIDOMWindow.h"
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#include "nsIObserverService.h"
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#include "nsIPresShell.h"
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#include "nsIScriptError.h"
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#include "nsIWindowMediator.h"
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#include "nsIPrefService.h"
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#include "mozilla/Preferences.h"
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#include "mozilla/Printf.h"
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#include "mozilla/StyleSheet.h"
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#include "mozilla/StyleSheetInlines.h"
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#include "mozilla/dom/Location.h"
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#include "nsIURIMutator.h"
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#include "unicode/uloc.h"
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nsChromeRegistry* nsChromeRegistry::gChromeRegistry;
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// DO NOT use namespace mozilla; it'll break due to a naming conflict between
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// mozilla::TextRange and a TextRange in OSX headers.
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using mozilla::StyleSheet;
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using mozilla::dom::IsChromeURI;
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using mozilla::dom::Location;
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////////////////////////////////////////////////////////////////////////////////
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void
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nsChromeRegistry::LogMessage(const char* aMsg, ...)
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{
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nsCOMPtr<nsIConsoleService> console
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(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
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if (!console)
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return;
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va_list args;
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va_start(args, aMsg);
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mozilla::SmprintfPointer formatted = mozilla::Vsmprintf(aMsg, args);
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va_end(args);
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if (!formatted)
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return;
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console->LogStringMessage(NS_ConvertUTF8toUTF16(formatted.get()).get());
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}
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void
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nsChromeRegistry::LogMessageWithContext(nsIURI* aURL, uint32_t aLineNumber, uint32_t flags,
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const char* aMsg, ...)
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{
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nsresult rv;
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nsCOMPtr<nsIConsoleService> console
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(do_GetService(NS_CONSOLESERVICE_CONTRACTID));
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nsCOMPtr<nsIScriptError> error
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(do_CreateInstance(NS_SCRIPTERROR_CONTRACTID));
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if (!console || !error)
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return;
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va_list args;
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va_start(args, aMsg);
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mozilla::SmprintfPointer formatted = mozilla::Vsmprintf(aMsg, args);
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va_end(args);
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if (!formatted)
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return;
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nsCString spec;
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if (aURL)
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aURL->GetSpec(spec);
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rv = error->Init(NS_ConvertUTF8toUTF16(formatted.get()),
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NS_ConvertUTF8toUTF16(spec),
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EmptyString(),
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aLineNumber, 0, flags, "chrome registration",
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false /* from private window */);
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if (NS_FAILED(rv))
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return;
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console->LogMessage(error);
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}
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nsChromeRegistry::~nsChromeRegistry()
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{
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gChromeRegistry = nullptr;
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}
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NS_INTERFACE_MAP_BEGIN(nsChromeRegistry)
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NS_INTERFACE_MAP_ENTRY(nsIChromeRegistry)
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NS_INTERFACE_MAP_ENTRY(nsIXULChromeRegistry)
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NS_INTERFACE_MAP_ENTRY(nsIToolkitChromeRegistry)
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NS_INTERFACE_MAP_ENTRY(nsIObserver)
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NS_INTERFACE_MAP_ENTRY(nsISupportsWeakReference)
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NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIChromeRegistry)
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NS_INTERFACE_MAP_END
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NS_IMPL_ADDREF(nsChromeRegistry)
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NS_IMPL_RELEASE(nsChromeRegistry)
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////////////////////////////////////////////////////////////////////////////////
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// nsIChromeRegistry methods:
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already_AddRefed<nsIChromeRegistry>
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nsChromeRegistry::GetService()
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{
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if (!gChromeRegistry)
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{
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// We don't actually want this ref, we just want the service to
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// initialize if it hasn't already.
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nsCOMPtr<nsIChromeRegistry> reg(
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do_GetService(NS_CHROMEREGISTRY_CONTRACTID));
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if (!gChromeRegistry)
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return nullptr;
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}
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nsCOMPtr<nsIChromeRegistry> registry = gChromeRegistry;
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return registry.forget();
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}
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nsresult
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nsChromeRegistry::Init()
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{
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// This initialization process is fairly complicated and may cause reentrant
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// getservice calls to resolve chrome URIs (especially locale files). We
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// don't want that, so we inform the protocol handler about our existence
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// before we are actually fully initialized.
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gChromeRegistry = this;
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mInitialized = true;
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return NS_OK;
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}
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nsresult
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nsChromeRegistry::GetProviderAndPath(nsIURI* aChromeURL,
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nsACString& aProvider, nsACString& aPath)
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{
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nsresult rv;
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#ifdef DEBUG
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bool isChrome;
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aChromeURL->SchemeIs("chrome", &isChrome);
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NS_ASSERTION(isChrome, "Non-chrome URI?");
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#endif
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nsAutoCString path;
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rv = aChromeURL->GetPathQueryRef(path);
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NS_ENSURE_SUCCESS(rv, rv);
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if (path.Length() < 3) {
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LogMessage("Invalid chrome URI: %s", path.get());
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return NS_ERROR_FAILURE;
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}
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path.SetLength(nsUnescapeCount(path.BeginWriting()));
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NS_ASSERTION(path.First() == '/', "Path should always begin with a slash!");
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int32_t slash = path.FindChar('/', 1);
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if (slash == 1) {
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LogMessage("Invalid chrome URI: %s", path.get());
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return NS_ERROR_FAILURE;
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}
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if (slash == -1) {
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aPath.Truncate();
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}
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else {
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if (slash == (int32_t) path.Length() - 1)
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aPath.Truncate();
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else
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aPath.Assign(path.get() + slash + 1, path.Length() - slash - 1);
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--slash;
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}
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aProvider.Assign(path.get() + 1, slash);
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return NS_OK;
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}
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nsresult
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nsChromeRegistry::Canonify(nsCOMPtr<nsIURI>& aChromeURL)
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{
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NS_NAMED_LITERAL_CSTRING(kSlash, "/");
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nsresult rv;
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nsAutoCString provider, path;
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rv = GetProviderAndPath(aChromeURL, provider, path);
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NS_ENSURE_SUCCESS(rv, rv);
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if (path.IsEmpty()) {
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nsAutoCString package;
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rv = aChromeURL->GetHost(package);
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NS_ENSURE_SUCCESS(rv, rv);
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// we re-use the "path" local string to build a new URL path
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path.Assign(kSlash + provider + kSlash + package);
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if (provider.EqualsLiteral("content")) {
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path.AppendLiteral(".xul");
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}
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else if (provider.EqualsLiteral("locale")) {
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path.AppendLiteral(".dtd");
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}
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else if (provider.EqualsLiteral("skin")) {
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path.AppendLiteral(".css");
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}
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else {
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return NS_ERROR_INVALID_ARG;
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}
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return NS_MutateURI(aChromeURL)
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.SetPathQueryRef(path)
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.Finalize(aChromeURL);
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}
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else {
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// prevent directory traversals ("..")
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// path is already unescaped once, but uris can get unescaped twice
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const char* pos = path.BeginReading();
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const char* end = path.EndReading();
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// Must start with [a-zA-Z0-9].
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if (!('a' <= *pos && *pos <= 'z') &&
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!('A' <= *pos && *pos <= 'Z') &&
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!('0' <= *pos && *pos <= '9')) {
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return NS_ERROR_DOM_BAD_URI;
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}
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while (pos < end) {
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switch (*pos) {
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case ':':
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return NS_ERROR_DOM_BAD_URI;
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case '.':
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if (pos[1] == '.')
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return NS_ERROR_DOM_BAD_URI;
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break;
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case '%':
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// chrome: URIs with double-escapes are trying to trick us.
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// watch for %2e, and %25 in case someone triple unescapes
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if (pos[1] == '2' &&
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( pos[2] == 'e' || pos[2] == 'E' ||
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pos[2] == '5' ))
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return NS_ERROR_DOM_BAD_URI;
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break;
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case '?':
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case '#':
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pos = end;
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continue;
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}
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++pos;
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}
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}
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return NS_OK;
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}
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NS_IMETHODIMP
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nsChromeRegistry::ConvertChromeURL(nsIURI* aChromeURI, nsIURI* *aResult)
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{
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nsresult rv;
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if (NS_WARN_IF(!aChromeURI)) {
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return NS_ERROR_INVALID_ARG;
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}
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if (mOverrideTable.Get(aChromeURI, aResult))
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return NS_OK;
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nsCOMPtr<nsIURL> chromeURL (do_QueryInterface(aChromeURI));
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NS_ENSURE_TRUE(chromeURL, NS_NOINTERFACE);
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nsAutoCString package, provider, path;
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rv = chromeURL->GetHostPort(package);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = GetProviderAndPath(chromeURL, provider, path);
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NS_ENSURE_SUCCESS(rv, rv);
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nsIURI* baseURI = GetBaseURIFromPackage(package, provider, path);
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uint32_t flags;
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rv = GetFlagsFromPackage(package, &flags);
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if (NS_FAILED(rv))
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return rv;
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if (!baseURI) {
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LogMessage("No chrome package registered for chrome://%s/%s/%s",
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package.get(), provider.get(), path.get());
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return NS_ERROR_FILE_NOT_FOUND;
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}
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return NS_NewURI(aResult, path, nullptr, baseURI);
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}
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////////////////////////////////////////////////////////////////////////
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// theme stuff
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static void FlushSkinBindingsForWindow(nsPIDOMWindowOuter* aWindow)
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{
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// Get the document.
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nsCOMPtr<nsIDocument> document = aWindow->GetDoc();
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if (!document)
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return;
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// Annihilate all XBL bindings.
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document->FlushSkinBindings();
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}
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// XXXbsmedberg: move this to nsIWindowMediator
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NS_IMETHODIMP nsChromeRegistry::RefreshSkins()
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{
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nsCOMPtr<nsIWindowMediator> windowMediator
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(do_GetService(NS_WINDOWMEDIATOR_CONTRACTID));
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if (!windowMediator)
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return NS_OK;
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nsCOMPtr<nsISimpleEnumerator> windowEnumerator;
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windowMediator->GetEnumerator(nullptr, getter_AddRefs(windowEnumerator));
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bool more;
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windowEnumerator->HasMoreElements(&more);
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while (more) {
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nsCOMPtr<nsISupports> protoWindow;
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windowEnumerator->GetNext(getter_AddRefs(protoWindow));
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if (protoWindow) {
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nsCOMPtr<nsPIDOMWindowOuter> domWindow = do_QueryInterface(protoWindow);
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if (domWindow)
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FlushSkinBindingsForWindow(domWindow);
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}
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windowEnumerator->HasMoreElements(&more);
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}
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FlushSkinCaches();
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windowMediator->GetEnumerator(nullptr, getter_AddRefs(windowEnumerator));
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windowEnumerator->HasMoreElements(&more);
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while (more) {
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nsCOMPtr<nsISupports> protoWindow;
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windowEnumerator->GetNext(getter_AddRefs(protoWindow));
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if (protoWindow) {
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nsCOMPtr<nsPIDOMWindowOuter> domWindow = do_QueryInterface(protoWindow);
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if (domWindow)
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RefreshWindow(domWindow);
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}
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windowEnumerator->HasMoreElements(&more);
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}
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return NS_OK;
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}
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void
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nsChromeRegistry::FlushSkinCaches()
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{
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nsCOMPtr<nsIObserverService> obsSvc =
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mozilla::services::GetObserverService();
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NS_ASSERTION(obsSvc, "Couldn't get observer service.");
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obsSvc->NotifyObservers(static_cast<nsIChromeRegistry*>(this),
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NS_CHROME_FLUSH_SKINS_TOPIC, nullptr);
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}
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// XXXbsmedberg: move this to windowmediator
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nsresult nsChromeRegistry::RefreshWindow(nsPIDOMWindowOuter* aWindow)
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{
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// Deal with our subframes first.
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nsDOMWindowList* frames = aWindow->GetFrames();
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uint32_t length = frames->GetLength();
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for (uint32_t j = 0; j < length; j++) {
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nsCOMPtr<nsPIDOMWindowOuter> piWindow = frames->IndexedGetter(j);
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RefreshWindow(piWindow);
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}
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nsresult rv;
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// Get the document.
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nsCOMPtr<nsIDocument> document = aWindow->GetDoc();
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if (!document)
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return NS_OK;
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// Deal with the agent sheets first. Have to do all the style sets by hand.
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nsCOMPtr<nsIPresShell> shell = document->GetShell();
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if (shell) {
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// Reload only the chrome URL agent style sheets.
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nsTArray<RefPtr<StyleSheet>> agentSheets;
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rv = shell->GetAgentStyleSheets(agentSheets);
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NS_ENSURE_SUCCESS(rv, rv);
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nsTArray<RefPtr<StyleSheet>> newAgentSheets;
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for (StyleSheet* sheet : agentSheets) {
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nsIURI* uri = sheet->GetSheetURI();
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if (IsChromeURI(uri)) {
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// Reload the sheet.
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RefPtr<StyleSheet> newSheet;
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rv = document->LoadChromeSheetSync(uri, true, &newSheet);
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if (NS_FAILED(rv)) return rv;
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if (newSheet) {
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newAgentSheets.AppendElement(newSheet);
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return NS_OK;
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}
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}
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else { // Just use the same sheet.
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rv = newAgentSheets.AppendElement(sheet) ? NS_OK : NS_ERROR_FAILURE;
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if (NS_FAILED(rv)) return rv;
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}
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}
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rv = shell->SetAgentStyleSheets(newAgentSheets);
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NS_ENSURE_SUCCESS(rv, rv);
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}
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size_t count = document->SheetCount();
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// Build an array of style sheets we need to reload.
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nsTArray<RefPtr<StyleSheet>> oldSheets(count);
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nsTArray<RefPtr<StyleSheet>> newSheets(count);
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// Iterate over the style sheets.
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for (size_t i = 0; i < count; i++) {
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// Get the style sheet
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oldSheets.AppendElement(document->SheetAt(i));
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}
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// Iterate over our old sheets and kick off a sync load of the new
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// sheet if and only if it's a non-inline sheet with a chrome URL.
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for (StyleSheet* sheet : oldSheets) {
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MOZ_ASSERT(sheet, "SheetAt shouldn't return nullptr for "
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"in-range sheet indexes");
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nsIURI* uri = sheet->GetSheetURI();
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if (!sheet->IsInline() && IsChromeURI(uri)) {
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// Reload the sheet.
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RefPtr<StyleSheet> newSheet;
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// XXX what about chrome sheets that have a title or are disabled? This
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// only works by sheer dumb luck.
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document->LoadChromeSheetSync(uri, false, &newSheet);
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// Even if it's null, we put in in there.
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newSheets.AppendElement(newSheet);
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} else {
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// Just use the same sheet.
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newSheets.AppendElement(sheet);
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}
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}
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// Now notify the document that multiple sheets have been added and removed.
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document->UpdateStyleSheets(oldSheets, newSheets);
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return NS_OK;
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}
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void
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nsChromeRegistry::FlushAllCaches()
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{
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nsCOMPtr<nsIObserverService> obsSvc =
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mozilla::services::GetObserverService();
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NS_ASSERTION(obsSvc, "Couldn't get observer service.");
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obsSvc->NotifyObservers((nsIChromeRegistry*) this,
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NS_CHROME_FLUSH_TOPIC, nullptr);
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}
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NS_IMETHODIMP
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nsChromeRegistry::AllowScriptsForPackage(nsIURI* aChromeURI, bool *aResult)
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{
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nsresult rv;
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*aResult = false;
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#ifdef DEBUG
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bool isChrome;
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aChromeURI->SchemeIs("chrome", &isChrome);
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NS_ASSERTION(isChrome, "Non-chrome URI passed to AllowScriptsForPackage!");
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#endif
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nsCOMPtr<nsIURL> url (do_QueryInterface(aChromeURI));
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NS_ENSURE_TRUE(url, NS_NOINTERFACE);
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nsAutoCString provider, file;
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rv = GetProviderAndPath(url, provider, file);
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NS_ENSURE_SUCCESS(rv, rv);
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if (!provider.EqualsLiteral("skin"))
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*aResult = true;
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return NS_OK;
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}
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NS_IMETHODIMP
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nsChromeRegistry::AllowContentToAccess(nsIURI *aURI, bool *aResult)
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{
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nsresult rv;
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*aResult = false;
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#ifdef DEBUG
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bool isChrome;
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aURI->SchemeIs("chrome", &isChrome);
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NS_ASSERTION(isChrome, "Non-chrome URI passed to AllowContentToAccess!");
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#endif
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nsCOMPtr<nsIURL> url = do_QueryInterface(aURI);
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if (!url) {
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NS_ERROR("Chrome URL doesn't implement nsIURL.");
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return NS_ERROR_UNEXPECTED;
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}
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nsAutoCString package;
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rv = url->GetHostPort(package);
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NS_ENSURE_SUCCESS(rv, rv);
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uint32_t flags;
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rv = GetFlagsFromPackage(package, &flags);
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if (NS_SUCCEEDED(rv)) {
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|
*aResult = !!(flags & CONTENT_ACCESSIBLE);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsChromeRegistry::CanLoadURLRemotely(nsIURI *aURI, bool *aResult)
|
|
{
|
|
nsresult rv;
|
|
|
|
*aResult = false;
|
|
|
|
#ifdef DEBUG
|
|
bool isChrome;
|
|
aURI->SchemeIs("chrome", &isChrome);
|
|
NS_ASSERTION(isChrome, "Non-chrome URI passed to CanLoadURLRemotely!");
|
|
#endif
|
|
|
|
nsCOMPtr<nsIURL> url = do_QueryInterface(aURI);
|
|
if (!url) {
|
|
NS_ERROR("Chrome URL doesn't implement nsIURL.");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsAutoCString package;
|
|
rv = url->GetHostPort(package);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
uint32_t flags;
|
|
rv = GetFlagsFromPackage(package, &flags);
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
*aResult = !!(flags & REMOTE_ALLOWED);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
NS_IMETHODIMP
|
|
nsChromeRegistry::MustLoadURLRemotely(nsIURI *aURI, bool *aResult)
|
|
{
|
|
nsresult rv;
|
|
|
|
*aResult = false;
|
|
|
|
#ifdef DEBUG
|
|
bool isChrome;
|
|
aURI->SchemeIs("chrome", &isChrome);
|
|
NS_ASSERTION(isChrome, "Non-chrome URI passed to MustLoadURLRemotely!");
|
|
#endif
|
|
|
|
nsCOMPtr<nsIURL> url = do_QueryInterface(aURI);
|
|
if (!url) {
|
|
NS_ERROR("Chrome URL doesn't implement nsIURL.");
|
|
return NS_ERROR_UNEXPECTED;
|
|
}
|
|
|
|
nsAutoCString package;
|
|
rv = url->GetHostPort(package);
|
|
NS_ENSURE_SUCCESS(rv, rv);
|
|
|
|
uint32_t flags;
|
|
rv = GetFlagsFromPackage(package, &flags);
|
|
|
|
if (NS_SUCCEEDED(rv)) {
|
|
*aResult = !!(flags & REMOTE_REQUIRED);
|
|
}
|
|
return NS_OK;
|
|
}
|
|
|
|
bool
|
|
nsChromeRegistry::GetDirectionForLocale(const nsACString& aLocale)
|
|
{
|
|
int pref = mozilla::Preferences::GetInt("intl.uidirection", -1);
|
|
if (pref >= 0) {
|
|
return (pref > 0);
|
|
}
|
|
nsAutoCString locale(aLocale);
|
|
SanitizeForBCP47(locale);
|
|
return uloc_isRightToLeft(locale.get());
|
|
}
|
|
|
|
NS_IMETHODIMP_(bool)
|
|
nsChromeRegistry::WrappersEnabled(nsIURI *aURI)
|
|
{
|
|
nsCOMPtr<nsIURL> chromeURL (do_QueryInterface(aURI));
|
|
if (!chromeURL)
|
|
return false;
|
|
|
|
bool isChrome = false;
|
|
nsresult rv = chromeURL->SchemeIs("chrome", &isChrome);
|
|
if (NS_FAILED(rv) || !isChrome)
|
|
return false;
|
|
|
|
nsAutoCString package;
|
|
rv = chromeURL->GetHostPort(package);
|
|
if (NS_FAILED(rv))
|
|
return false;
|
|
|
|
uint32_t flags;
|
|
rv = GetFlagsFromPackage(package, &flags);
|
|
return NS_SUCCEEDED(rv) && (flags & XPCNATIVEWRAPPERS);
|
|
}
|
|
|
|
already_AddRefed<nsChromeRegistry>
|
|
nsChromeRegistry::GetSingleton()
|
|
{
|
|
if (gChromeRegistry) {
|
|
RefPtr<nsChromeRegistry> registry = gChromeRegistry;
|
|
return registry.forget();
|
|
}
|
|
|
|
RefPtr<nsChromeRegistry> cr;
|
|
if (GeckoProcessType_Content == XRE_GetProcessType())
|
|
cr = new nsChromeRegistryContent();
|
|
else
|
|
cr = new nsChromeRegistryChrome();
|
|
|
|
if (NS_FAILED(cr->Init()))
|
|
return nullptr;
|
|
|
|
return cr.forget();
|
|
}
|
|
|
|
void
|
|
nsChromeRegistry::SanitizeForBCP47(nsACString& aLocale)
|
|
{
|
|
// Currently, the only locale code we use that's not BCP47-conformant is
|
|
// "ja-JP-mac" on OS X, but let's try to be more general than just
|
|
// hard-coding that here.
|
|
const int32_t LANG_TAG_CAPACITY = 128;
|
|
char langTag[LANG_TAG_CAPACITY];
|
|
nsAutoCString locale(aLocale);
|
|
UErrorCode err = U_ZERO_ERROR;
|
|
// This is a fail-safe method that will set langTag to "und" if it cannot
|
|
// match any part of the input locale code.
|
|
int32_t len = uloc_toLanguageTag(locale.get(), langTag, LANG_TAG_CAPACITY,
|
|
false, &err);
|
|
if (U_SUCCESS(err) && len > 0) {
|
|
aLocale.Assign(langTag, len);
|
|
}
|
|
}
|