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// Copyright (c) 2010 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 "chrome/browser/renderer_host/database_dispatcher_host.h"
#if defined(OS_POSIX)
#include "base/file_descriptor_posix.h"
#endif
#include "base/string_util.h"
#include "base/thread.h"
#include "chrome/browser/browser_process.h"
#include "chrome/browser/chrome_thread.h"
#include "chrome/browser/host_content_settings_map.h"
#include "chrome/browser/net/chrome_url_request_context.h"
#include "chrome/browser/renderer_host/browser_render_process_host.h"
#include "chrome/browser/renderer_host/database_permission_request.h"
#include "chrome/common/render_messages.h"
#include "googleurl/src/gurl.h"
#include "third_party/sqlite/preprocessed/sqlite3.h"
#include "third_party/WebKit/WebKit/chromium/public/WebSecurityOrigin.h"
#include "webkit/database/database_util.h"
#include "webkit/database/vfs_backend.h"
using WebKit::WebSecurityOrigin;
using webkit_database::DatabaseTracker;
using webkit_database::DatabaseUtil;
using webkit_database::VfsBackend;
const int kNumDeleteRetries = 2;
const int kDelayDeleteRetryMs = 100;
DatabaseDispatcherHost::DatabaseDispatcherHost(
DatabaseTracker* db_tracker,
IPC::Message::Sender* sender,
HostContentSettingsMap *host_content_settings_map)
: db_tracker_(db_tracker),
message_sender_(sender),
process_handle_(0),
observer_added_(false),
shutdown_(false),
host_content_settings_map_(host_content_settings_map) {
DCHECK(db_tracker_);
DCHECK(message_sender_);
}
void DatabaseDispatcherHost::Init(base::ProcessHandle process_handle) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::IO));
DCHECK(!shutdown_);
DCHECK(!process_handle_);
DCHECK(process_handle);
process_handle_ = process_handle;
}
void DatabaseDispatcherHost::Shutdown() {
shutdown_ = true;
message_sender_ = NULL;
if (observer_added_) {
observer_added_ = false;
ChromeThread::PostTask(
ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this, &DatabaseDispatcherHost::RemoveObserver));
}
}
void DatabaseDispatcherHost::AddObserver() {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
db_tracker_->AddObserver(this);
}
void DatabaseDispatcherHost::RemoveObserver() {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
// If the renderer process died without closing all databases,
// then we need to manually close those connections
db_tracker_->CloseDatabases(database_connections_);
database_connections_.RemoveAllConnections();
db_tracker_->RemoveObserver(this);
}
bool DatabaseDispatcherHost::OnMessageReceived(
const IPC::Message& message, bool* message_was_ok) {
DCHECK(!shutdown_);
*message_was_ok = true;
bool handled = true;
IPC_BEGIN_MESSAGE_MAP_EX(DatabaseDispatcherHost, message, *message_was_ok)
IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_DatabaseOpenFile,
OnDatabaseOpenFile)
IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_DatabaseDeleteFile,
OnDatabaseDeleteFile)
IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_DatabaseGetFileAttributes,
OnDatabaseGetFileAttributes)
IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_DatabaseGetFileSize,
OnDatabaseGetFileSize)
IPC_MESSAGE_HANDLER(ViewHostMsg_DatabaseOpened, OnDatabaseOpened)
IPC_MESSAGE_HANDLER(ViewHostMsg_DatabaseModified, OnDatabaseModified)
IPC_MESSAGE_HANDLER(ViewHostMsg_DatabaseClosed, OnDatabaseClosed)
IPC_MESSAGE_HANDLER_DELAY_REPLY(ViewHostMsg_AllowDatabase, OnAllowDatabase)
IPC_MESSAGE_UNHANDLED(handled = false)
IPC_END_MESSAGE_MAP_EX()
return handled;
}
void DatabaseDispatcherHost::ReceivedBadMessage(uint32 msg_type) {
BrowserRenderProcessHost::BadMessageTerminateProcess(
msg_type, process_handle_);
}
void DatabaseDispatcherHost::Send(IPC::Message* message) {
if (!ChromeThread::CurrentlyOn(ChromeThread::IO)) {
if (!ChromeThread::PostTask(
ChromeThread::IO, FROM_HERE,
NewRunnableMethod(this,
&DatabaseDispatcherHost::Send,
message)))
delete message;
return;
}
if (!shutdown_ && message_sender_)
message_sender_->Send(message);
else
delete message;
}
void DatabaseDispatcherHost::OnDatabaseOpenFile(const string16& vfs_file_name,
int desired_flags,
IPC::Message* reply_msg) {
if (!observer_added_) {
observer_added_ = true;
ChromeThread::PostTask(
ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this, &DatabaseDispatcherHost::AddObserver));
}
ChromeThread::PostTask(
ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this,
&DatabaseDispatcherHost::DatabaseOpenFile,
vfs_file_name,
desired_flags,
reply_msg));
}
// Scheduled by the IO thread on the file thread.
// Opens the given database file, then schedules
// a task on the IO thread's message loop to send an IPC back to
// corresponding renderer process with the file handle.
void DatabaseDispatcherHost::DatabaseOpenFile(const string16& vfs_file_name,
int desired_flags,
IPC::Message* reply_msg) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
base::PlatformFile file_handle = base::kInvalidPlatformFileValue;
base::PlatformFile target_handle = base::kInvalidPlatformFileValue;
string16 origin_identifier;
string16 database_name;
// When in incognito mode, we want to make sure that all DB files are
// removed when the incognito profile goes away, so we add the
// SQLITE_OPEN_DELETEONCLOSE flag when opening all files, and keep
// open handles to them in the database tracker to make sure they're
// around for as long as needed.
if (vfs_file_name.empty()) {
VfsBackend::OpenTempFileInDirectory(db_tracker_->DatabaseDirectory(),
desired_flags, &file_handle);
} else if (DatabaseUtil::CrackVfsFileName(vfs_file_name, &origin_identifier,
&database_name, NULL) &&
!db_tracker_->IsDatabaseScheduledForDeletion(origin_identifier,
database_name)) {
FilePath db_file =
DatabaseUtil::GetFullFilePathForVfsFile(db_tracker_, vfs_file_name);
if (!db_file.empty()) {
if (db_tracker_->IsIncognitoProfile()) {
db_tracker_->GetIncognitoFileHandle(vfs_file_name, &file_handle);
if (file_handle == base::kInvalidPlatformFileValue) {
VfsBackend::OpenFile(db_file,
desired_flags | SQLITE_OPEN_DELETEONCLOSE,
&file_handle);
if (VfsBackend::FileTypeIsMainDB(desired_flags) ||
VfsBackend::FileTypeIsJournal(desired_flags))
db_tracker_->SaveIncognitoFileHandle(vfs_file_name, file_handle);
}
} else {
VfsBackend::OpenFile(db_file, desired_flags, &file_handle);
}
}
}
// Then we duplicate the file handle to make it useable in the renderer
// process. The original handle is closed, unless we saved it in the
// database tracker.
bool auto_close = !db_tracker_->HasSavedIncognitoFileHandle(vfs_file_name);
VfsBackend::GetFileHandleForProcess(process_handle_, file_handle,
&target_handle, auto_close);
ViewHostMsg_DatabaseOpenFile::WriteReplyParams(
reply_msg,
#if defined(OS_WIN)
target_handle
#elif defined(OS_POSIX)
base::FileDescriptor(target_handle, auto_close)
#endif
);
Send(reply_msg);
}
void DatabaseDispatcherHost::OnDatabaseDeleteFile(const string16& vfs_file_name,
const bool& sync_dir,
IPC::Message* reply_msg) {
ChromeThread::PostTask(
ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this,
&DatabaseDispatcherHost::DatabaseDeleteFile,
vfs_file_name,
sync_dir,
reply_msg,
kNumDeleteRetries));
}
// Scheduled by the IO thread on the file thread.
// Deletes the given database file, then schedules
// a task on the IO thread's message loop to send an IPC back to
// corresponding renderer process with the error code.
void DatabaseDispatcherHost::DatabaseDeleteFile(const string16& vfs_file_name,
bool sync_dir,
IPC::Message* reply_msg,
int reschedule_count) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
// Return an error if the file name is invalid or if the file could not
// be deleted after kNumDeleteRetries attempts.
int error_code = SQLITE_IOERR_DELETE;
FilePath db_file =
DatabaseUtil::GetFullFilePathForVfsFile(db_tracker_, vfs_file_name);
if (!db_file.empty()) {
// In order to delete a journal file in incognito mode, we only need to
// close the open handle to it that's stored in the database tracker.
if (db_tracker_->IsIncognitoProfile()) {
if (db_tracker_->CloseIncognitoFileHandle(vfs_file_name))
error_code = SQLITE_OK;
} else {
error_code = VfsBackend::DeleteFile(db_file, sync_dir);
}
if ((error_code == SQLITE_IOERR_DELETE) && reschedule_count) {
// If the file could not be deleted, try again.
ChromeThread::PostDelayedTask(
ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this,
&DatabaseDispatcherHost::DatabaseDeleteFile,
vfs_file_name,
sync_dir,
reply_msg,
reschedule_count - 1),
kDelayDeleteRetryMs);
return;
}
}
ViewHostMsg_DatabaseDeleteFile::WriteReplyParams(reply_msg, error_code);
Send(reply_msg);
}
void DatabaseDispatcherHost::OnDatabaseGetFileAttributes(
const string16& vfs_file_name,
IPC::Message* reply_msg) {
ChromeThread::PostTask(
ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this,
&DatabaseDispatcherHost::DatabaseGetFileAttributes,
vfs_file_name,
reply_msg));
}
// Scheduled by the IO thread on the file thread.
// Gets the attributes of the given database file, then schedules
// a task on the IO thread's message loop to send an IPC back to
// corresponding renderer process.
void DatabaseDispatcherHost::DatabaseGetFileAttributes(
const string16& vfs_file_name,
IPC::Message* reply_msg) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
int32 attributes = -1;
FilePath db_file =
DatabaseUtil::GetFullFilePathForVfsFile(db_tracker_, vfs_file_name);
if (!db_file.empty())
attributes = VfsBackend::GetFileAttributes(db_file);
ViewHostMsg_DatabaseGetFileAttributes::WriteReplyParams(
reply_msg, attributes);
Send(reply_msg);
}
void DatabaseDispatcherHost::OnDatabaseGetFileSize(
const string16& vfs_file_name, IPC::Message* reply_msg) {
ChromeThread::PostTask(
ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this,
&DatabaseDispatcherHost::DatabaseGetFileSize,
vfs_file_name,
reply_msg));
}
// Scheduled by the IO thread on the file thread.
// Gets the size of the given file, then schedules a task
// on the IO thread's message loop to send an IPC back to
// the corresponding renderer process.
void DatabaseDispatcherHost::DatabaseGetFileSize(const string16& vfs_file_name,
IPC::Message* reply_msg) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
int64 size = 0;
FilePath db_file =
DatabaseUtil::GetFullFilePathForVfsFile(db_tracker_, vfs_file_name);
if (!db_file.empty())
size = VfsBackend::GetFileSize(db_file);
ViewHostMsg_DatabaseGetFileSize::WriteReplyParams(reply_msg, size);
Send(reply_msg);
}
void DatabaseDispatcherHost::OnDatabaseOpened(const string16& origin_identifier,
const string16& database_name,
const string16& description,
int64 estimated_size) {
ChromeThread::PostTask(
ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this,
&DatabaseDispatcherHost::DatabaseOpened,
origin_identifier,
database_name,
description,
estimated_size));
}
void DatabaseDispatcherHost::DatabaseOpened(const string16& origin_identifier,
const string16& database_name,
const string16& description,
int64 estimated_size) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
int64 database_size = 0;
int64 space_available = 0;
database_connections_.AddConnection(origin_identifier, database_name);
db_tracker_->DatabaseOpened(origin_identifier, database_name, description,
estimated_size, &database_size, &space_available);
Send(new ViewMsg_DatabaseUpdateSize(origin_identifier, database_name,
database_size, space_available));
}
void DatabaseDispatcherHost::OnDatabaseModified(
const string16& origin_identifier,
const string16& database_name) {
ChromeThread::PostTask(
ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this,
&DatabaseDispatcherHost::DatabaseModified,
origin_identifier,
database_name));
}
void DatabaseDispatcherHost::DatabaseModified(const string16& origin_identifier,
const string16& database_name) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
if (!database_connections_.IsDatabaseOpened(
origin_identifier, database_name)) {
ReceivedBadMessage(ViewHostMsg_DatabaseModified::ID);
return;
}
db_tracker_->DatabaseModified(origin_identifier, database_name);
}
void DatabaseDispatcherHost::OnDatabaseClosed(const string16& origin_identifier,
const string16& database_name) {
ChromeThread::PostTask(
ChromeThread::FILE, FROM_HERE,
NewRunnableMethod(this,
&DatabaseDispatcherHost::DatabaseClosed,
origin_identifier,
database_name));
}
void DatabaseDispatcherHost::OnAllowDatabase(const std::string& origin_url,
const string16& name,
const string16& display_name,
unsigned long estimated_size,
IPC::Message* reply_msg) {
GURL url = GURL(origin_url);
ContentSetting content_setting =
host_content_settings_map_->GetContentSetting(
url, CONTENT_SETTINGS_TYPE_COOKIES, "");
if (content_setting == CONTENT_SETTING_ASK) {
// Create a task for each possible outcome.
scoped_ptr<Task> on_allow(NewRunnableMethod(
this, &DatabaseDispatcherHost::AllowDatabaseResponse,
reply_msg, CONTENT_SETTING_ALLOW));
scoped_ptr<Task> on_block(NewRunnableMethod(
this, &DatabaseDispatcherHost::AllowDatabaseResponse,
reply_msg, CONTENT_SETTING_BLOCK));
// And then let the permission request object do the rest.
scoped_refptr<DatabasePermissionRequest> request(
new DatabasePermissionRequest(url, name, display_name, estimated_size,
on_allow.release(), on_block.release(),
host_content_settings_map_));
request->RequestPermission();
// Tell the renderer that it needs to run a nested message loop.
Send(new ViewMsg_SignalCookiePromptEvent());
return;
}
AllowDatabaseResponse(reply_msg, content_setting);
}
void DatabaseDispatcherHost::AllowDatabaseResponse(
IPC::Message* reply_msg, ContentSetting content_setting) {
DCHECK((content_setting == CONTENT_SETTING_ALLOW) ||
(content_setting == CONTENT_SETTING_BLOCK) ||
(content_setting == CONTENT_SETTING_SESSION_ONLY));
ViewHostMsg_AllowDatabase::WriteReplyParams(
reply_msg, content_setting != CONTENT_SETTING_BLOCK);
Send(reply_msg);
}
void DatabaseDispatcherHost::DatabaseClosed(const string16& origin_identifier,
const string16& database_name) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
if (!database_connections_.IsDatabaseOpened(
origin_identifier, database_name)) {
ReceivedBadMessage(ViewHostMsg_DatabaseClosed::ID);
return;
}
db_tracker_->DatabaseClosed(origin_identifier, database_name);
database_connections_.RemoveConnection(origin_identifier, database_name);
}
void DatabaseDispatcherHost::OnDatabaseSizeChanged(
const string16& origin_identifier,
const string16& database_name,
int64 database_size,
int64 space_available) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
if (database_connections_.IsOriginUsed(origin_identifier)) {
Send(new ViewMsg_DatabaseUpdateSize(origin_identifier, database_name,
database_size, space_available));
}
}
void DatabaseDispatcherHost::OnDatabaseScheduledForDeletion(
const string16& origin_identifier,
const string16& database_name) {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::FILE));
Send(new ViewMsg_DatabaseCloseImmediately(origin_identifier, database_name));
}
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