mirror of
https://github.com/classilla/tenfourfox.git
synced 2024-11-20 10:33:36 +00:00
359 lines
9.0 KiB
C++
359 lines
9.0 KiB
C++
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* vim: set ts=8 sts=2 et sw=2 tw=80: */
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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 "DOMStorageObserver.h"
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#include "DOMStorageDBThread.h"
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#include "DOMStorageCache.h"
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#include "nsIObserverService.h"
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#include "nsIURI.h"
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#include "nsIURL.h"
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#include "nsIScriptSecurityManager.h"
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#include "nsIPermission.h"
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#include "nsIIDNService.h"
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#include "mozIApplicationClearPrivateDataParams.h"
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#include "nsICookiePermission.h"
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#include "nsPrintfCString.h"
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#include "nsXULAppAPI.h"
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#include "nsEscape.h"
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#include "nsNetCID.h"
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#include "mozilla/Services.h"
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#include "nsServiceManagerUtils.h"
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namespace mozilla {
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namespace dom {
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static const char kStartupTopic[] = "sessionstore-windows-restored";
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static const uint32_t kStartupDelay = 0;
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NS_IMPL_ISUPPORTS(DOMStorageObserver,
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nsIObserver,
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nsISupportsWeakReference)
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DOMStorageObserver* DOMStorageObserver::sSelf = nullptr;
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extern nsresult
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CreateReversedDomain(const nsACString& aAsciiDomain, nsACString& aKey);
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// static
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nsresult
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DOMStorageObserver::Init()
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{
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if (sSelf) {
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return NS_OK;
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}
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nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
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if (!obs) {
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return NS_ERROR_UNEXPECTED;
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}
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sSelf = new DOMStorageObserver();
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NS_ADDREF(sSelf);
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// Chrome clear operations.
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obs->AddObserver(sSelf, kStartupTopic, true);
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obs->AddObserver(sSelf, "cookie-changed", true);
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obs->AddObserver(sSelf, "perm-changed", true);
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obs->AddObserver(sSelf, "browser:purge-domain-data", true);
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obs->AddObserver(sSelf, "last-pb-context-exited", true);
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obs->AddObserver(sSelf, "webapps-clear-data", true);
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// Shutdown
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obs->AddObserver(sSelf, "profile-after-change", true);
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obs->AddObserver(sSelf, "profile-before-change", true);
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obs->AddObserver(sSelf, "xpcom-shutdown", true);
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// Observe low device storage notifications.
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obs->AddObserver(sSelf, "disk-space-watcher", true);
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#ifdef DOM_STORAGE_TESTS
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// Testing
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obs->AddObserver(sSelf, "domstorage-test-flush-force", true);
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if (XRE_IsParentProcess()) {
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// Only to forward to child process.
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obs->AddObserver(sSelf, "domstorage-test-flushed", true);
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}
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obs->AddObserver(sSelf, "domstorage-test-reload", true);
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#endif
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return NS_OK;
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}
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// static
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nsresult
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DOMStorageObserver::Shutdown()
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{
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if (!sSelf) {
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return NS_ERROR_NOT_INITIALIZED;
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}
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NS_RELEASE(sSelf);
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return NS_OK;
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}
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void
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DOMStorageObserver::AddSink(DOMStorageObserverSink* aObs)
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{
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mSinks.AppendElement(aObs);
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}
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void
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DOMStorageObserver::RemoveSink(DOMStorageObserverSink* aObs)
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{
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mSinks.RemoveElement(aObs);
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}
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void
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DOMStorageObserver::Notify(const char* aTopic, const nsACString& aData)
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{
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for (uint32_t i = 0; i < mSinks.Length(); ++i) {
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DOMStorageObserverSink* sink = mSinks[i];
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sink->Observe(aTopic, aData);
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}
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}
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NS_IMETHODIMP
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DOMStorageObserver::Observe(nsISupports* aSubject,
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const char* aTopic,
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const char16_t* aData)
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{
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nsresult rv;
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// Start the thread that opens the database.
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if (!strcmp(aTopic, kStartupTopic)) {
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nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
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obs->RemoveObserver(this, kStartupTopic);
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mDBThreadStartDelayTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
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if (!mDBThreadStartDelayTimer) {
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return NS_ERROR_UNEXPECTED;
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}
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mDBThreadStartDelayTimer->Init(this, nsITimer::TYPE_ONE_SHOT, kStartupDelay);
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return NS_OK;
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}
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// Timer callback used to start the database a short timer after startup
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if (!strcmp(aTopic, NS_TIMER_CALLBACK_TOPIC)) {
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nsCOMPtr<nsITimer> timer = do_QueryInterface(aSubject);
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if (!timer) {
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return NS_ERROR_UNEXPECTED;
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}
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if (timer == mDBThreadStartDelayTimer) {
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mDBThreadStartDelayTimer = nullptr;
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DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
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NS_ENSURE_TRUE(db, NS_ERROR_FAILURE);
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}
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return NS_OK;
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}
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// Clear everything, caches + database
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if (!strcmp(aTopic, "cookie-changed")) {
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if (!NS_LITERAL_STRING("cleared").Equals(aData)) {
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return NS_OK;
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}
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DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
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NS_ENSURE_TRUE(db, NS_ERROR_FAILURE);
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db->AsyncClearAll();
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Notify("cookie-cleared");
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return NS_OK;
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}
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// Clear from caches everything that has been stored
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// while in session-only mode
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if (!strcmp(aTopic, "perm-changed")) {
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// Check for cookie permission change
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nsCOMPtr<nsIPermission> perm(do_QueryInterface(aSubject));
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if (!perm) {
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return NS_OK;
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}
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nsAutoCString type;
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perm->GetType(type);
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if (type != NS_LITERAL_CSTRING("cookie")) {
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return NS_OK;
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}
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uint32_t cap = 0;
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perm->GetCapability(&cap);
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if (!(cap & nsICookiePermission::ACCESS_SESSION) ||
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!NS_LITERAL_STRING("deleted").Equals(nsDependentString(aData))) {
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return NS_OK;
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}
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nsCOMPtr<nsIPrincipal> principal;
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perm->GetPrincipal(getter_AddRefs(principal));
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if (!principal) {
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return NS_OK;
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}
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nsCOMPtr<nsIURI> origin;
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principal->GetURI(getter_AddRefs(origin));
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if (!origin) {
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return NS_OK;
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}
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nsAutoCString host;
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origin->GetHost(host);
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if (host.IsEmpty()) {
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return NS_OK;
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}
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nsAutoCString scope;
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rv = CreateReversedDomain(host, scope);
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NS_ENSURE_SUCCESS(rv, rv);
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Notify("session-only-cleared", scope);
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return NS_OK;
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}
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// Clear everything (including so and pb data) from caches and database
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// for the gived domain and subdomains.
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if (!strcmp(aTopic, "browser:purge-domain-data")) {
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// Convert the domain name to the ACE format
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nsAutoCString aceDomain;
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nsCOMPtr<nsIIDNService> converter = do_GetService(NS_IDNSERVICE_CONTRACTID);
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if (converter) {
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rv = converter->ConvertUTF8toACE(NS_ConvertUTF16toUTF8(aData), aceDomain);
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NS_ENSURE_SUCCESS(rv, rv);
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} else {
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// In case the IDN service is not available, this is the best we can come up with!
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NS_EscapeURL(NS_ConvertUTF16toUTF8(aData),
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esc_OnlyNonASCII | esc_AlwaysCopy,
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aceDomain);
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}
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nsAutoCString scopePrefix;
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rv = CreateReversedDomain(aceDomain, scopePrefix);
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NS_ENSURE_SUCCESS(rv, rv);
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DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
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NS_ENSURE_TRUE(db, NS_ERROR_FAILURE);
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db->AsyncClearMatchingScope(scopePrefix);
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Notify("domain-data-cleared", scopePrefix);
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return NS_OK;
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}
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// Clear all private-browsing caches
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if (!strcmp(aTopic, "last-pb-context-exited")) {
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Notify("private-browsing-data-cleared");
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return NS_OK;
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}
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// Clear data beloging to an app.
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if (!strcmp(aTopic, "webapps-clear-data")) {
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nsCOMPtr<mozIApplicationClearPrivateDataParams> params =
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do_QueryInterface(aSubject);
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if (!params) {
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NS_ERROR("'webapps-clear-data' notification's subject should be a mozIApplicationClearPrivateDataParams");
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return NS_ERROR_UNEXPECTED;
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}
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uint32_t appId;
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bool browserOnly;
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rv = params->GetAppId(&appId);
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NS_ENSURE_SUCCESS(rv, rv);
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rv = params->GetBrowserOnly(&browserOnly);
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NS_ENSURE_SUCCESS(rv, rv);
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MOZ_ASSERT(appId != nsIScriptSecurityManager::UNKNOWN_APP_ID);
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DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
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NS_ENSURE_TRUE(db, NS_ERROR_FAILURE);
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nsAutoCString scope;
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scope.AppendInt(appId);
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scope.AppendLiteral(":t:");
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db->AsyncClearMatchingScope(scope);
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Notify("app-data-cleared", scope);
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if (!browserOnly) {
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scope.Truncate();
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scope.AppendInt(appId);
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scope.AppendLiteral(":f:");
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db->AsyncClearMatchingScope(scope);
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Notify("app-data-cleared", scope);
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}
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return NS_OK;
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}
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if (!strcmp(aTopic, "profile-after-change")) {
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Notify("profile-change");
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return NS_OK;
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}
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if (!strcmp(aTopic, "profile-before-change") ||
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!strcmp(aTopic, "xpcom-shutdown")) {
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rv = DOMStorageCache::StopDatabase();
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if (NS_FAILED(rv)) {
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NS_WARNING("Error while stopping DOMStorage DB background thread");
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}
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return NS_OK;
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}
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if (!strcmp(aTopic, "disk-space-watcher")) {
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if (NS_LITERAL_STRING("full").Equals(aData)) {
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Notify("low-disk-space");
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} else if (NS_LITERAL_STRING("free").Equals(aData)) {
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Notify("no-low-disk-space");
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}
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return NS_OK;
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}
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#ifdef DOM_STORAGE_TESTS
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if (!strcmp(aTopic, "domstorage-test-flush-force")) {
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DOMStorageDBBridge* db = DOMStorageCache::GetDatabase();
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if (db) {
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db->AsyncFlush();
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}
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return NS_OK;
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}
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if (!strcmp(aTopic, "domstorage-test-flushed")) {
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// Only used to propagate to IPC children
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Notify("test-flushed");
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return NS_OK;
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}
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if (!strcmp(aTopic, "domstorage-test-reload")) {
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Notify("test-reload");
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return NS_OK;
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}
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#endif
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NS_ERROR("Unexpected topic");
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return NS_ERROR_UNEXPECTED;
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}
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} // namespace dom
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} // namespace mozilla
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