blob: 2b415cceb6cb19e1db7e41da9133996f697d7c3e [file] [log] [blame]
// Copyright (c) 2012 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "storage/browser/database/database_tracker.h"
#include <stdint.h>
#include <algorithm>
#include <utility>
#include <vector>
#include "base/bind.h"
#include "base/files/file_enumerator.h"
#include "base/files/file_util.h"
#include "base/strings/string_number_conversions.h"
#include "base/strings/utf_string_conversions.h"
#include "base/task_scheduler/post_task.h"
#include "net/base/net_errors.h"
#include "sql/connection.h"
#include "sql/meta_table.h"
#include "sql/transaction.h"
#include "storage/browser/database/database_quota_client.h"
#include "storage/browser/database/database_util.h"
#include "storage/browser/database/databases_table.h"
#include "storage/browser/quota/quota_manager_proxy.h"
#include "storage/browser/quota/special_storage_policy.h"
#include "storage/common/database/database_identifier.h"
#include "third_party/blink/public/mojom/quota/quota_types.mojom.h"
#include "third_party/sqlite/sqlite3.h"
#include "url/origin.h"
namespace storage {
const base::FilePath::CharType kDatabaseDirectoryName[] =
FILE_PATH_LITERAL("databases");
const base::FilePath::CharType kIncognitoDatabaseDirectoryName[] =
FILE_PATH_LITERAL("databases-incognito");
const base::FilePath::CharType kTrackerDatabaseFileName[] =
FILE_PATH_LITERAL("Databases.db");
static const int kCurrentVersion = 2;
static const int kCompatibleVersion = 1;
const base::FilePath::CharType kTemporaryDirectoryPrefix[] =
FILE_PATH_LITERAL("DeleteMe");
const base::FilePath::CharType kTemporaryDirectoryPattern[] =
FILE_PATH_LITERAL("DeleteMe*");
OriginInfo::OriginInfo()
: total_size_(0) {}
OriginInfo::OriginInfo(const OriginInfo& origin_info) = default;
OriginInfo::~OriginInfo() = default;
void OriginInfo::GetAllDatabaseNames(
std::vector<base::string16>* databases) const {
for (const auto& pair : database_info_)
databases->push_back(pair.first);
}
int64_t OriginInfo::GetDatabaseSize(const base::string16& database_name) const {
DatabaseInfoMap::const_iterator it = database_info_.find(database_name);
if (it != database_info_.end())
return it->second.first;
return 0;
}
base::string16 OriginInfo::GetDatabaseDescription(
const base::string16& database_name) const {
DatabaseInfoMap::const_iterator it = database_info_.find(database_name);
if (it != database_info_.end())
return it->second.second;
return base::string16();
}
OriginInfo::OriginInfo(const std::string& origin_identifier, int64_t total_size)
: origin_identifier_(origin_identifier), total_size_(total_size) {}
DatabaseTracker::DatabaseTracker(
const base::FilePath& profile_path,
bool is_incognito,
storage::SpecialStoragePolicy* special_storage_policy,
storage::QuotaManagerProxy* quota_manager_proxy)
: is_incognito_(is_incognito),
profile_path_(profile_path),
db_dir_(is_incognito_
? profile_path_.Append(kIncognitoDatabaseDirectoryName)
: profile_path_.Append(kDatabaseDirectoryName)),
db_(new sql::Connection()),
special_storage_policy_(special_storage_policy),
quota_manager_proxy_(quota_manager_proxy),
task_runner_(base::CreateSequencedTaskRunnerWithTraits(
{base::MayBlock(), base::TaskPriority::USER_VISIBLE,
base::TaskShutdownBehavior::SKIP_ON_SHUTDOWN})) {
if (quota_manager_proxy) {
quota_manager_proxy->RegisterClient(new DatabaseQuotaClient(this));
}
}
DatabaseTracker::~DatabaseTracker() {
DCHECK(dbs_to_be_deleted_.empty());
DCHECK(deletion_callbacks_.empty());
}
void DatabaseTracker::DatabaseOpened(const std::string& origin_identifier,
const base::string16& database_name,
const base::string16& database_description,
int64_t estimated_size,
int64_t* database_size) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (shutting_down_ || !LazyInit()) {
*database_size = 0;
return;
}
if (quota_manager_proxy_.get())
quota_manager_proxy_->NotifyStorageAccessed(
storage::QuotaClient::kDatabase,
storage::GetOriginFromIdentifier(origin_identifier),
blink::mojom::StorageType::kTemporary);
InsertOrUpdateDatabaseDetails(origin_identifier, database_name,
database_description, estimated_size);
if (database_connections_.AddConnection(origin_identifier, database_name)) {
*database_size = SeedOpenDatabaseInfo(origin_identifier,
database_name,
database_description);
return;
}
*database_size = UpdateOpenDatabaseInfoAndNotify(origin_identifier,
database_name,
&database_description);
}
void DatabaseTracker::DatabaseModified(const std::string& origin_identifier,
const base::string16& database_name) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (!LazyInit())
return;
UpdateOpenDatabaseSizeAndNotify(origin_identifier, database_name);
}
void DatabaseTracker::DatabaseClosed(const std::string& origin_identifier,
const base::string16& database_name) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (database_connections_.IsEmpty()) {
DCHECK(!is_initialized_);
return;
}
// We call NotifiyStorageAccessed when a db is opened and also when
// closed because we don't call it for read while open.
if (quota_manager_proxy_.get())
quota_manager_proxy_->NotifyStorageAccessed(
storage::QuotaClient::kDatabase,
storage::GetOriginFromIdentifier(origin_identifier),
blink::mojom::StorageType::kTemporary);
UpdateOpenDatabaseSizeAndNotify(origin_identifier, database_name);
if (database_connections_.RemoveConnection(origin_identifier, database_name))
DeleteDatabaseIfNeeded(origin_identifier, database_name);
}
void DatabaseTracker::HandleSqliteError(
const std::string& origin_identifier,
const base::string16& database_name,
int error) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
// We only handle errors that indicate corruption and we
// do so with a heavy hand, we delete it. Any renderers/workers
// with this database open will receive a message to close it
// immediately, once all have closed, the files will be deleted.
// In the interim, all attempts to open a new connection to that
// database will fail.
// Note: the client-side filters out all but these two errors as
// a small optimization, see WebDatabaseObserverImpl::HandleSqliteError.
if (error == SQLITE_CORRUPT || error == SQLITE_NOTADB) {
DeleteDatabase(origin_identifier, database_name,
net::CompletionCallback());
}
}
void DatabaseTracker::CloseDatabases(const DatabaseConnections& connections) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (database_connections_.IsEmpty()) {
DCHECK(!is_initialized_ || connections.IsEmpty());
return;
}
// When being closed by this route, there's a chance that
// the tracker missed some DatabaseModified calls. This method is used
// when a renderer crashes to cleanup its open resources.
// We need to examine what we have in connections for the
// size of each open databases and notify any differences between the
// actual file sizes now.
for (auto& pair : connections.ListConnections())
UpdateOpenDatabaseSizeAndNotify(pair.first, pair.second);
for (auto& pair : database_connections_.RemoveConnections(connections))
DeleteDatabaseIfNeeded(pair.first, pair.second);
}
void DatabaseTracker::DeleteDatabaseIfNeeded(
const std::string& origin_identifier,
const base::string16& database_name) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DCHECK(!database_connections_.IsDatabaseOpened(origin_identifier,
database_name));
if (IsDatabaseScheduledForDeletion(origin_identifier, database_name)) {
DeleteClosedDatabase(origin_identifier, database_name);
dbs_to_be_deleted_[origin_identifier].erase(database_name);
if (dbs_to_be_deleted_[origin_identifier].empty())
dbs_to_be_deleted_.erase(origin_identifier);
PendingDeletionCallbacks::iterator callback = deletion_callbacks_.begin();
while (callback != deletion_callbacks_.end()) {
DatabaseSet::iterator found_origin =
callback->second.find(origin_identifier);
if (found_origin != callback->second.end()) {
std::set<base::string16>& databases = found_origin->second;
databases.erase(database_name);
if (databases.empty()) {
callback->second.erase(found_origin);
if (callback->second.empty()) {
net::CompletionCallback cb = callback->first;
cb.Run(net::OK);
callback = deletion_callbacks_.erase(callback);
continue;
}
}
}
++callback;
}
}
}
void DatabaseTracker::AddObserver(Observer* observer) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
observers_.AddObserver(observer);
}
void DatabaseTracker::RemoveObserver(Observer* observer) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
// When we remove a listener, we do not know which cached information
// is still needed and which information can be discarded. So we just
// clear all caches and re-populate them as needed.
observers_.RemoveObserver(observer);
ClearAllCachedOriginInfo();
}
void DatabaseTracker::CloseTrackerDatabaseAndClearCaches() {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
ClearAllCachedOriginInfo();
if (!is_incognito_) {
meta_table_.reset(nullptr);
databases_table_.reset(nullptr);
db_->Close();
is_initialized_ = false;
}
}
base::string16 DatabaseTracker::GetOriginDirectory(
const std::string& origin_identifier) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (!is_incognito_)
return base::UTF8ToUTF16(origin_identifier);
OriginDirectoriesMap::const_iterator it =
incognito_origin_directories_.find(origin_identifier);
if (it != incognito_origin_directories_.end())
return it->second;
base::string16 origin_directory =
base::IntToString16(incognito_origin_directories_generator_++);
incognito_origin_directories_[origin_identifier] = origin_directory;
return origin_directory;
}
base::FilePath DatabaseTracker::GetFullDBFilePath(
const std::string& origin_identifier,
const base::string16& database_name) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DCHECK(!origin_identifier.empty());
if (!LazyInit())
return base::FilePath();
int64_t id =
databases_table_->GetDatabaseID(origin_identifier, database_name);
if (id < 0)
return base::FilePath();
return db_dir_.Append(base::FilePath::FromUTF16Unsafe(
GetOriginDirectory(origin_identifier))).AppendASCII(
base::Int64ToString(id));
}
bool DatabaseTracker::GetOriginInfo(const std::string& origin_identifier,
OriginInfo* info) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DCHECK(info);
CachedOriginInfo* cached_info = GetCachedOriginInfo(origin_identifier);
if (!cached_info)
return false;
*info = OriginInfo(*cached_info);
return true;
}
bool DatabaseTracker::GetAllOriginIdentifiers(
std::vector<std::string>* origin_identifiers) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DCHECK(origin_identifiers);
DCHECK(origin_identifiers->empty());
if (!LazyInit())
return false;
return databases_table_->GetAllOriginIdentifiers(origin_identifiers);
}
bool DatabaseTracker::GetAllOriginsInfo(
std::vector<OriginInfo>* origins_info) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DCHECK(origins_info);
DCHECK(origins_info->empty());
std::vector<std::string> origins;
if (!GetAllOriginIdentifiers(&origins))
return false;
for (const auto& origin : origins) {
CachedOriginInfo* origin_info = GetCachedOriginInfo(origin);
if (!origin_info) {
// Restore 'origins_info' to its initial state.
origins_info->clear();
return false;
}
origins_info->push_back(OriginInfo(*origin_info));
}
return true;
}
bool DatabaseTracker::DeleteClosedDatabase(
const std::string& origin_identifier,
const base::string16& database_name) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (!LazyInit())
return false;
// Check if the database is opened by any renderer.
if (database_connections_.IsDatabaseOpened(origin_identifier, database_name))
return false;
int64_t db_file_size = quota_manager_proxy_.get()
? GetDBFileSize(origin_identifier, database_name)
: 0;
// Try to delete the file on the hard drive.
base::FilePath db_file = GetFullDBFilePath(origin_identifier, database_name);
if (!sql::Connection::Delete(db_file))
return false;
if (quota_manager_proxy_.get() && db_file_size)
quota_manager_proxy_->NotifyStorageModified(
storage::QuotaClient::kDatabase,
storage::GetOriginFromIdentifier(origin_identifier),
blink::mojom::StorageType::kTemporary, -db_file_size);
// Clean up the main database and invalidate the cached record.
databases_table_->DeleteDatabaseDetails(origin_identifier, database_name);
origins_info_map_.erase(origin_identifier);
std::vector<DatabaseDetails> details;
if (databases_table_->GetAllDatabaseDetailsForOriginIdentifier(
origin_identifier, &details) && details.empty()) {
// Try to delete the origin in case this was the last database.
DeleteOrigin(origin_identifier, false);
}
return true;
}
bool DatabaseTracker::DeleteOrigin(const std::string& origin_identifier,
bool force) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (!LazyInit())
return false;
// Check if any database in this origin is opened by any renderer.
if (database_connections_.IsOriginUsed(origin_identifier) && !force)
return false;
int64_t deleted_size = 0;
if (quota_manager_proxy_.get()) {
CachedOriginInfo* origin_info = GetCachedOriginInfo(origin_identifier);
if (origin_info)
deleted_size = origin_info->TotalSize();
}
origins_info_map_.erase(origin_identifier);
base::FilePath origin_dir = db_dir_.AppendASCII(origin_identifier);
// Create a temporary directory to move possibly still existing databases to,
// as we can't delete the origin directory on windows if it contains opened
// files.
base::FilePath new_origin_dir;
base::CreateTemporaryDirInDir(db_dir_,
kTemporaryDirectoryPrefix,
&new_origin_dir);
base::FileEnumerator databases(
origin_dir,
false,
base::FileEnumerator::FILES);
for (base::FilePath database = databases.Next(); !database.empty();
database = databases.Next()) {
base::FilePath new_file = new_origin_dir.Append(database.BaseName());
base::Move(database, new_file);
}
base::DeleteFile(origin_dir, true);
base::DeleteFile(new_origin_dir, true); // might fail on windows.
databases_table_->DeleteOriginIdentifier(origin_identifier);
if (quota_manager_proxy_.get() && deleted_size) {
quota_manager_proxy_->NotifyStorageModified(
storage::QuotaClient::kDatabase,
storage::GetOriginFromIdentifier(origin_identifier),
blink::mojom::StorageType::kTemporary, -deleted_size);
}
return true;
}
bool DatabaseTracker::IsDatabaseScheduledForDeletion(
const std::string& origin_identifier,
const base::string16& database_name) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DatabaseSet::iterator it = dbs_to_be_deleted_.find(origin_identifier);
if (it == dbs_to_be_deleted_.end())
return false;
std::set<base::string16>& databases = it->second;
return (databases.find(database_name) != databases.end());
}
bool DatabaseTracker::LazyInit() {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (!is_initialized_ && !shutting_down_) {
DCHECK(!db_->is_open());
DCHECK(!databases_table_.get());
DCHECK(!meta_table_.get());
// If there are left-over directories from failed deletion attempts, clean
// them up.
if (base::DirectoryExists(db_dir_)) {
base::FileEnumerator directories(
db_dir_,
false,
base::FileEnumerator::DIRECTORIES,
kTemporaryDirectoryPattern);
for (base::FilePath directory = directories.Next(); !directory.empty();
directory = directories.Next()) {
base::DeleteFile(directory, true);
}
}
db_->set_histogram_tag("DatabaseTracker");
// If the tracker database exists, but it's corrupt or doesn't
// have a meta table, delete the database directory.
const base::FilePath kTrackerDatabaseFullPath =
db_dir_.Append(base::FilePath(kTrackerDatabaseFileName));
if (base::DirectoryExists(db_dir_) &&
base::PathExists(kTrackerDatabaseFullPath) &&
(!db_->Open(kTrackerDatabaseFullPath) ||
!sql::MetaTable::DoesTableExist(db_.get()))) {
db_->Close();
if (!base::DeleteFile(db_dir_, true))
return false;
}
databases_table_.reset(new DatabasesTable(db_.get()));
meta_table_.reset(new sql::MetaTable());
is_initialized_ =
base::CreateDirectory(db_dir_) &&
(db_->is_open() ||
(is_incognito_ ? db_->OpenInMemory() :
db_->Open(kTrackerDatabaseFullPath))) &&
UpgradeToCurrentVersion();
if (!is_initialized_) {
databases_table_.reset(nullptr);
meta_table_.reset(nullptr);
db_->Close();
}
}
return is_initialized_;
}
bool DatabaseTracker::UpgradeToCurrentVersion() {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
sql::Transaction transaction(db_.get());
if (!transaction.Begin() ||
!meta_table_->Init(db_.get(), kCurrentVersion, kCompatibleVersion) ||
(meta_table_->GetCompatibleVersionNumber() > kCurrentVersion) ||
!databases_table_->Init())
return false;
if (meta_table_->GetVersionNumber() < kCurrentVersion)
meta_table_->SetVersionNumber(kCurrentVersion);
return transaction.Commit();
}
void DatabaseTracker::InsertOrUpdateDatabaseDetails(
const std::string& origin_identifier,
const base::string16& database_name,
const base::string16& database_description,
int64_t estimated_size) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DatabaseDetails details;
if (!databases_table_->GetDatabaseDetails(
origin_identifier, database_name, &details)) {
details.origin_identifier = origin_identifier;
details.database_name = database_name;
details.description = database_description;
details.estimated_size = estimated_size;
databases_table_->InsertDatabaseDetails(details);
} else if ((details.description != database_description) ||
(details.estimated_size != estimated_size)) {
details.description = database_description;
details.estimated_size = estimated_size;
databases_table_->UpdateDatabaseDetails(details);
}
}
void DatabaseTracker::ClearAllCachedOriginInfo() {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
origins_info_map_.clear();
}
DatabaseTracker::CachedOriginInfo* DatabaseTracker::MaybeGetCachedOriginInfo(
const std::string& origin_identifier, bool create_if_needed) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (!LazyInit())
return nullptr;
// Populate the cache with data for this origin if needed.
if (origins_info_map_.find(origin_identifier) == origins_info_map_.end()) {
if (!create_if_needed)
return nullptr;
std::vector<DatabaseDetails> details;
if (!databases_table_->GetAllDatabaseDetailsForOriginIdentifier(
origin_identifier, &details)) {
return nullptr;
}
CachedOriginInfo& origin_info = origins_info_map_[origin_identifier];
origin_info.SetOriginIdentifier(origin_identifier);
for (const auto& db : details) {
int64_t db_file_size;
if (database_connections_.IsDatabaseOpened(origin_identifier,
db.database_name)) {
db_file_size = database_connections_.GetOpenDatabaseSize(
origin_identifier, db.database_name);
} else {
db_file_size = GetDBFileSize(origin_identifier, db.database_name);
}
origin_info.SetDatabaseSize(db.database_name, db_file_size);
origin_info.SetDatabaseDescription(db.database_name, db.description);
}
}
return &origins_info_map_[origin_identifier];
}
int64_t DatabaseTracker::GetDBFileSize(const std::string& origin_identifier,
const base::string16& database_name) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
base::FilePath db_file_name = GetFullDBFilePath(origin_identifier,
database_name);
int64_t db_file_size = 0;
if (!base::GetFileSize(db_file_name, &db_file_size))
db_file_size = 0;
return db_file_size;
}
int64_t DatabaseTracker::SeedOpenDatabaseInfo(
const std::string& origin_id,
const base::string16& name,
const base::string16& description) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DCHECK(database_connections_.IsDatabaseOpened(origin_id, name));
int64_t size = GetDBFileSize(origin_id, name);
database_connections_.SetOpenDatabaseSize(origin_id, name, size);
CachedOriginInfo* info = MaybeGetCachedOriginInfo(origin_id, false);
if (info) {
info->SetDatabaseSize(name, size);
info->SetDatabaseDescription(name, description);
}
return size;
}
int64_t DatabaseTracker::UpdateOpenDatabaseInfoAndNotify(
const std::string& origin_id,
const base::string16& name,
const base::string16* opt_description) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DCHECK(database_connections_.IsDatabaseOpened(origin_id, name));
int64_t new_size = GetDBFileSize(origin_id, name);
int64_t old_size = database_connections_.GetOpenDatabaseSize(origin_id, name);
CachedOriginInfo* info = MaybeGetCachedOriginInfo(origin_id, false);
if (info && opt_description)
info->SetDatabaseDescription(name, *opt_description);
if (old_size != new_size) {
database_connections_.SetOpenDatabaseSize(origin_id, name, new_size);
if (info)
info->SetDatabaseSize(name, new_size);
if (quota_manager_proxy_.get())
quota_manager_proxy_->NotifyStorageModified(
storage::QuotaClient::kDatabase,
storage::GetOriginFromIdentifier(origin_id),
blink::mojom::StorageType::kTemporary, new_size - old_size);
for (auto& observer : observers_)
observer.OnDatabaseSizeChanged(origin_id, name, new_size);
}
return new_size;
}
void DatabaseTracker::ScheduleDatabaseForDeletion(
const std::string& origin_identifier,
const base::string16& database_name) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DCHECK(database_connections_.IsDatabaseOpened(origin_identifier,
database_name));
dbs_to_be_deleted_[origin_identifier].insert(database_name);
for (auto& observer : observers_)
observer.OnDatabaseScheduledForDeletion(origin_identifier, database_name);
}
void DatabaseTracker::ScheduleDatabasesForDeletion(
const DatabaseSet& databases,
const net::CompletionCallback& callback) {
DCHECK(!databases.empty());
if (!callback.is_null())
deletion_callbacks_.push_back(std::make_pair(callback, databases));
for (const auto& origin_dbs : databases) {
for (const base::string16& db : origin_dbs.second)
ScheduleDatabaseForDeletion(origin_dbs.first, db);
}
}
int DatabaseTracker::DeleteDatabase(const std::string& origin_identifier,
const base::string16& database_name,
const net::CompletionCallback& callback) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (!LazyInit())
return net::ERR_FAILED;
if (database_connections_.IsDatabaseOpened(origin_identifier,
database_name)) {
if (!callback.is_null()) {
DatabaseSet set;
set[origin_identifier].insert(database_name);
deletion_callbacks_.emplace_back(callback, set);
}
ScheduleDatabaseForDeletion(origin_identifier, database_name);
return net::ERR_IO_PENDING;
}
DeleteClosedDatabase(origin_identifier, database_name);
return net::OK;
}
int DatabaseTracker::DeleteDataModifiedSince(
const base::Time& cutoff,
const net::CompletionCallback& callback) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (!LazyInit())
return net::ERR_FAILED;
DatabaseSet to_be_deleted;
std::vector<std::string> origins_identifiers;
if (!databases_table_->GetAllOriginIdentifiers(&origins_identifiers))
return net::ERR_FAILED;
int rv = net::OK;
for (const auto& origin : origins_identifiers) {
if (special_storage_policy_.get() &&
special_storage_policy_->IsStorageProtected(
storage::GetOriginURLFromIdentifier(origin))) {
continue;
}
std::vector<DatabaseDetails> details;
if (!databases_table_->GetAllDatabaseDetailsForOriginIdentifier(origin,
&details))
rv = net::ERR_FAILED;
for (const DatabaseDetails& db : details) {
base::FilePath db_file = GetFullDBFilePath(origin, db.database_name);
base::File::Info file_info;
base::GetFileInfo(db_file, &file_info);
if (file_info.last_modified < cutoff)
continue;
// Check if the database is opened by any renderer.
if (database_connections_.IsDatabaseOpened(origin, db.database_name))
to_be_deleted[origin].insert(db.database_name);
else
DeleteClosedDatabase(origin, db.database_name);
}
}
if (rv != net::OK)
return rv;
if (!to_be_deleted.empty()) {
ScheduleDatabasesForDeletion(to_be_deleted, callback);
return net::ERR_IO_PENDING;
}
return net::OK;
}
int DatabaseTracker::DeleteDataForOrigin(
const std::string& origin, const net::CompletionCallback& callback) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (!LazyInit())
return net::ERR_FAILED;
DatabaseSet to_be_deleted;
std::vector<DatabaseDetails> details;
if (!databases_table_->
GetAllDatabaseDetailsForOriginIdentifier(origin, &details))
return net::ERR_FAILED;
for (const auto& db : details) {
// Check if the database is opened by any renderer.
if (database_connections_.IsDatabaseOpened(origin, db.database_name))
to_be_deleted[origin].insert(db.database_name);
else
DeleteClosedDatabase(origin, db.database_name);
}
if (!to_be_deleted.empty()) {
ScheduleDatabasesForDeletion(to_be_deleted, callback);
return net::ERR_IO_PENDING;
}
return net::OK;
}
const base::File* DatabaseTracker::GetIncognitoFile(
const base::string16& vfs_file_name) const {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DCHECK(is_incognito_);
FileHandlesMap::const_iterator it =
incognito_file_handles_.find(vfs_file_name);
if (it != incognito_file_handles_.end())
return it->second;
return nullptr;
}
const base::File* DatabaseTracker::SaveIncognitoFile(
const base::string16& vfs_file_name,
base::File file) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DCHECK(is_incognito_);
if (!file.IsValid())
return nullptr;
base::File* to_insert = new base::File(std::move(file));
std::pair<FileHandlesMap::iterator, bool> rv =
incognito_file_handles_.insert(std::make_pair(vfs_file_name, to_insert));
DCHECK(rv.second);
return rv.first->second;
}
void DatabaseTracker::CloseIncognitoFileHandle(
const base::string16& vfs_file_name) {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
DCHECK(is_incognito_);
DCHECK(incognito_file_handles_.find(vfs_file_name) !=
incognito_file_handles_.end());
FileHandlesMap::iterator it = incognito_file_handles_.find(vfs_file_name);
if (it != incognito_file_handles_.end()) {
delete it->second;
incognito_file_handles_.erase(it);
}
}
bool DatabaseTracker::HasSavedIncognitoFileHandle(
const base::string16& vfs_file_name) const {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
return (incognito_file_handles_.find(vfs_file_name) !=
incognito_file_handles_.end());
}
void DatabaseTracker::DeleteIncognitoDBDirectory() {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
is_initialized_ = false;
for (auto& pair : incognito_file_handles_)
delete pair.second;
base::FilePath incognito_db_dir =
profile_path_.Append(kIncognitoDatabaseDirectoryName);
if (base::DirectoryExists(incognito_db_dir))
base::DeleteFile(incognito_db_dir, true);
}
void DatabaseTracker::ClearSessionOnlyOrigins() {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
bool has_session_only_databases =
special_storage_policy_.get() &&
special_storage_policy_->HasSessionOnlyOrigins();
// Clearing only session-only databases, and there are none.
if (!has_session_only_databases)
return;
if (!LazyInit())
return;
std::vector<std::string> origin_identifiers;
GetAllOriginIdentifiers(&origin_identifiers);
for (const auto& origin : origin_identifiers) {
GURL origin_url = storage::GetOriginURLFromIdentifier(origin);
if (!special_storage_policy_->IsStorageSessionOnly(origin_url))
continue;
if (special_storage_policy_->IsStorageProtected(origin_url))
continue;
storage::OriginInfo origin_info;
std::vector<base::string16> databases;
GetOriginInfo(origin, &origin_info);
origin_info.GetAllDatabaseNames(&databases);
for (const auto& database : databases) {
base::File file(
GetFullDBFilePath(origin, database),
base::File::FLAG_OPEN_ALWAYS | base::File::FLAG_SHARE_DELETE |
base::File::FLAG_DELETE_ON_CLOSE | base::File::FLAG_READ);
}
DeleteOrigin(origin, true);
}
}
void DatabaseTracker::Shutdown() {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
if (shutting_down_) {
NOTREACHED();
return;
}
shutting_down_ = true;
if (is_incognito_)
DeleteIncognitoDBDirectory();
else if (!force_keep_session_state_)
ClearSessionOnlyOrigins();
CloseTrackerDatabaseAndClearCaches();
}
void DatabaseTracker::SetForceKeepSessionState() {
DCHECK(task_runner_->RunsTasksInCurrentSequence());
force_keep_session_state_ = true;
}
} // namespace storage