void
DOMStorageManager::ClearCaches(uint32_t aUnloadFlags,
const OriginAttributesPattern& aPattern,
const nsACString& aOriginScope)
{
for (auto iter1 = mCaches.Iter(); !iter1.Done(); iter1.Next()) {
PrincipalOriginAttributes oa;
DebugOnly<bool> rv = oa.PopulateFromSuffix(iter1.Key());
MOZ_ASSERT(rv);
if (!aPattern.Matches(oa)) {
// This table doesn't match the given origin attributes pattern
continue;
}
CacheOriginHashtable* table = iter1.Data();
for (auto iter2 = table->Iter(); !iter2.Done(); iter2.Next()) {
DOMStorageCache* cache = iter2.Get()->cache();
if (aOriginScope.IsEmpty() ||
StringBeginsWith(cache->OriginNoSuffix(), aOriginScope)) {
cache->UnloadItems(aUnloadFlags);
}
}
}
}
void
SessionStorageManager::ClearStorages(ClearStorageType aType,
const OriginAttributesPattern& aPattern,
const nsACString& aOriginScope)
{
for (auto iter1 = mOATable.Iter(); !iter1.Done(); iter1.Next()) {
OriginAttributes oa;
DebugOnly<bool> ok = oa.PopulateFromSuffix(iter1.Key());
MOZ_ASSERT(ok);
if (!aPattern.Matches(oa)) {
// This table doesn't match the given origin attributes pattern
continue;
}
OriginKeyHashTable* table = iter1.Data();
for (auto iter2 = table->Iter(); !iter2.Done(); iter2.Next()) {
if (aOriginScope.IsEmpty() ||
StringBeginsWith(iter2.Key(), aOriginScope)) {
if (aType == eAll) {
iter2.Data()->Clear(SessionStorageCache::eDefaultSetType, false);
iter2.Data()->Clear(SessionStorageCache::eSessionSetType, false);
} else {
MOZ_ASSERT(aType == eSessionOnly);
iter2.Data()->Clear(SessionStorageCache::eSessionSetType, false);
}
}
}
}
}
NS_IMETHODIMP
nsHttpAuthCache::OriginClearObserver::Observe(nsISupports *subject,
const char * topic,
const char16_t * data_unicode)
{
NS_ENSURE_TRUE(mOwner, NS_ERROR_NOT_AVAILABLE);
OriginAttributesPattern pattern;
if (!pattern.Init(nsDependentString(data_unicode))) {
NS_ERROR("Cannot parse origin attributes pattern");
return NS_ERROR_FAILURE;
}
mOwner->ClearOriginData(pattern);
return NS_OK;
}
nsresult
SessionStorageManager::Observe(const char* aTopic,
const nsAString& aOriginAttributesPattern,
const nsACString& aOriginScope)
{
OriginAttributesPattern pattern;
if (!pattern.Init(aOriginAttributesPattern)) {
NS_ERROR("Cannot parse origin attributes pattern");
return NS_ERROR_FAILURE;
}
// Clear everything, caches + database
if (!strcmp(aTopic, "cookie-cleared")) {
ClearStorages(eAll, pattern, EmptyCString());
return NS_OK;
}
// Clear from caches everything that has been stored
// while in session-only mode
if (!strcmp(aTopic, "session-only-cleared")) {
ClearStorages(eSessionOnly, pattern, aOriginScope);
return NS_OK;
}
// Clear everything (including so and pb data) from caches and database
// for the gived domain and subdomains.
if (!strcmp(aTopic, "domain-data-cleared")) {
ClearStorages(eAll, pattern, aOriginScope);
return NS_OK;
}
if (!strcmp(aTopic, "profile-change")) {
// For case caches are still referenced - clear them completely
ClearStorages(eAll, pattern, EmptyCString());
mOATable.Clear();
return NS_OK;
}
return NS_OK;
}
nsresult
DOMStorageManager::Observe(const char* aTopic,
const nsAString& aOriginAttributesPattern,
const nsACString& aOriginScope)
{
OriginAttributesPattern pattern;
pattern.Init(aOriginAttributesPattern);
// Clear everything, caches + database
if (!strcmp(aTopic, "cookie-cleared")) {
ClearCaches(DOMStorageCache::kUnloadComplete, pattern, EmptyCString());
return NS_OK;
}
// Clear from caches everything that has been stored
// while in session-only mode
if (!strcmp(aTopic, "session-only-cleared")) {
ClearCaches(DOMStorageCache::kUnloadSession, pattern, aOriginScope);
return NS_OK;
}
// Clear everything (including so and pb data) from caches and database
// for the gived domain and subdomains.
if (!strcmp(aTopic, "domain-data-cleared")) {
ClearCaches(DOMStorageCache::kUnloadComplete, pattern, aOriginScope);
return NS_OK;
}
// Clear all private-browsing caches
if (!strcmp(aTopic, "private-browsing-data-cleared")) {
ClearCaches(DOMStorageCache::kUnloadPrivate, pattern, EmptyCString());
return NS_OK;
}
// Clear localStorage data beloging to an origin pattern
if (!strcmp(aTopic, "origin-attr-pattern-cleared")) {
// sessionStorage is expected to stay
if (mType == SessionStorage) {
return NS_OK;
}
ClearCaches(DOMStorageCache::kUnloadComplete, pattern, EmptyCString());
return NS_OK;
}
if (!strcmp(aTopic, "profile-change")) {
// For case caches are still referenced - clear them completely
ClearCaches(DOMStorageCache::kUnloadComplete, pattern, EmptyCString());
mCaches.Clear();
return NS_OK;
}
if (!strcmp(aTopic, "low-disk-space")) {
if (mType == LocalStorage) {
mLowDiskSpace = true;
}
return NS_OK;
}
if (!strcmp(aTopic, "no-low-disk-space")) {
if (mType == LocalStorage) {
mLowDiskSpace = false;
}
return NS_OK;
}
#ifdef DOM_STORAGE_TESTS
if (!strcmp(aTopic, "test-reload")) {
if (mType != LocalStorage) {
return NS_OK;
}
// This immediately completely reloads all caches from the database.
ClearCaches(DOMStorageCache::kTestReload, pattern, EmptyCString());
return NS_OK;
}
if (!strcmp(aTopic, "test-flushed")) {
if (!XRE_IsParentProcess()) {
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
if (obs) {
obs->NotifyObservers(nullptr, "domstorage-test-flushed", nullptr);
}
}
return NS_OK;
}
#endif
NS_ERROR("Unexpected topic");
return NS_ERROR_UNEXPECTED;
}
NS_IMETHODIMP
DOMStorageObserver::Observe(nsISupports* aSubject,
const char* aTopic,
const char16_t* aData)
{
nsresult rv;
// Start the thread that opens the database.
if (!strcmp(aTopic, kStartupTopic)) {
nsCOMPtr<nsIObserverService> obs = mozilla::services::GetObserverService();
obs->RemoveObserver(this, kStartupTopic);
mDBThreadStartDelayTimer = do_CreateInstance(NS_TIMER_CONTRACTID);
if (!mDBThreadStartDelayTimer) {
return NS_ERROR_UNEXPECTED;
}
mDBThreadStartDelayTimer->Init(this, nsITimer::TYPE_ONE_SHOT, kStartupDelay);
return NS_OK;
}
// Timer callback used to start the database a short timer after startup
if (!strcmp(aTopic, NS_TIMER_CALLBACK_TOPIC)) {
nsCOMPtr<nsITimer> timer = do_QueryInterface(aSubject);
if (!timer) {
return NS_ERROR_UNEXPECTED;
}
if (timer == mDBThreadStartDelayTimer) {
mDBThreadStartDelayTimer = nullptr;
DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
NS_ENSURE_TRUE(db, NS_ERROR_FAILURE);
}
return NS_OK;
}
// Clear everything, caches + database
if (!strcmp(aTopic, "cookie-changed")) {
if (!NS_LITERAL_STRING("cleared").Equals(aData)) {
return NS_OK;
}
DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
NS_ENSURE_TRUE(db, NS_ERROR_FAILURE);
db->AsyncClearAll();
Notify("cookie-cleared");
return NS_OK;
}
// Clear from caches everything that has been stored
// while in session-only mode
if (!strcmp(aTopic, "perm-changed")) {
// Check for cookie permission change
nsCOMPtr<nsIPermission> perm(do_QueryInterface(aSubject));
if (!perm) {
return NS_OK;
}
nsAutoCString type;
perm->GetType(type);
if (type != NS_LITERAL_CSTRING("cookie")) {
return NS_OK;
}
uint32_t cap = 0;
perm->GetCapability(&cap);
if (!(cap & nsICookiePermission::ACCESS_SESSION) ||
!NS_LITERAL_STRING("deleted").Equals(nsDependentString(aData))) {
return NS_OK;
}
nsCOMPtr<nsIPrincipal> principal;
perm->GetPrincipal(getter_AddRefs(principal));
if (!principal) {
return NS_OK;
}
nsAutoCString originSuffix;
BasePrincipal::Cast(principal)->OriginAttributesRef().CreateSuffix(originSuffix);
nsCOMPtr<nsIURI> origin;
principal->GetURI(getter_AddRefs(origin));
if (!origin) {
return NS_OK;
}
nsAutoCString host;
origin->GetHost(host);
if (host.IsEmpty()) {
return NS_OK;
}
nsAutoCString originScope;
rv = CreateReversedDomain(host, originScope);
NS_ENSURE_SUCCESS(rv, rv);
Notify("session-only-cleared", NS_ConvertUTF8toUTF16(originSuffix), originScope);
return NS_OK;
}
// Clear everything (including so and pb data) from caches and database
// for the gived domain and subdomains.
if (!strcmp(aTopic, "browser:purge-domain-data")) {
// Convert the domain name to the ACE format
nsAutoCString aceDomain;
nsCOMPtr<nsIIDNService> converter = do_GetService(NS_IDNSERVICE_CONTRACTID);
if (converter) {
rv = converter->ConvertUTF8toACE(NS_ConvertUTF16toUTF8(aData), aceDomain);
NS_ENSURE_SUCCESS(rv, rv);
} else {
// In case the IDN service is not available, this is the best we can come up with!
rv = NS_EscapeURL(NS_ConvertUTF16toUTF8(aData),
esc_OnlyNonASCII | esc_AlwaysCopy,
aceDomain,
fallible);
NS_ENSURE_SUCCESS(rv, rv);
}
nsAutoCString originScope;
rv = CreateReversedDomain(aceDomain, originScope);
NS_ENSURE_SUCCESS(rv, rv);
DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
NS_ENSURE_TRUE(db, NS_ERROR_FAILURE);
db->AsyncClearMatchingOrigin(originScope);
Notify("domain-data-cleared", EmptyString(), originScope);
return NS_OK;
}
// Clear all private-browsing caches
if (!strcmp(aTopic, "last-pb-context-exited")) {
Notify("private-browsing-data-cleared");
return NS_OK;
}
// Clear data of the origins whose prefixes will match the suffix.
if (!strcmp(aTopic, "clear-origin-attributes-data")) {
OriginAttributesPattern pattern;
if (!pattern.Init(nsDependentString(aData))) {
NS_ERROR("Cannot parse origin attributes pattern");
return NS_ERROR_FAILURE;
}
DOMStorageDBBridge* db = DOMStorageCache::StartDatabase();
NS_ENSURE_TRUE(db, NS_ERROR_FAILURE);
db->AsyncClearMatchingOriginAttributes(pattern);
Notify("origin-attr-pattern-cleared", nsDependentString(aData));
return NS_OK;
}
if (!strcmp(aTopic, "profile-after-change")) {
Notify("profile-change");
return NS_OK;
}
if (!strcmp(aTopic, "profile-before-change") ||
!strcmp(aTopic, "xpcom-shutdown")) {
rv = DOMStorageCache::StopDatabase();
if (NS_FAILED(rv)) {
NS_WARNING("Error while stopping DOMStorage DB background thread");
}
return NS_OK;
}
if (!strcmp(aTopic, "disk-space-watcher")) {
if (NS_LITERAL_STRING("full").Equals(aData)) {
Notify("low-disk-space");
} else if (NS_LITERAL_STRING("free").Equals(aData)) {
Notify("no-low-disk-space");
}
return NS_OK;
}
#ifdef DOM_STORAGE_TESTS
if (!strcmp(aTopic, "domstorage-test-flush-force")) {
DOMStorageDBBridge* db = DOMStorageCache::GetDatabase();
if (db) {
db->AsyncFlush();
}
return NS_OK;
}
if (!strcmp(aTopic, "domstorage-test-flushed")) {
// Only used to propagate to IPC children
Notify("test-flushed");
return NS_OK;
}
if (!strcmp(aTopic, "domstorage-test-reload")) {
Notify("test-reload");
return NS_OK;
}
#endif
NS_ERROR("Unexpected topic");
return NS_ERROR_UNEXPECTED;
}