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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/sync/glue/password_change_processor.h"
#include "base/string_util.h"
#include "base/utf_string_conversions.h"
#include "chrome/browser/password_manager/password_store.h"
#include "chrome/browser/password_manager/password_store_change.h"
#include "chrome/browser/profile.h"
#include "chrome/browser/sync/glue/password_model_associator.h"
#include "chrome/browser/sync/profile_sync_service.h"
#include "chrome/browser/sync/protocol/password_specifics.pb.h"
#include "chrome/common/notification_service.h"
#include "chrome/common/notification_type.h"
#include "webkit/glue/password_form.h"
namespace browser_sync {
PasswordChangeProcessor::PasswordChangeProcessor(
PasswordModelAssociator* model_associator,
PasswordStore* password_store,
UnrecoverableErrorHandler* error_handler)
: ChangeProcessor(error_handler),
model_associator_(model_associator),
password_store_(password_store),
observing_(false),
expected_loop_(MessageLoop::current()) {
DCHECK(model_associator);
DCHECK(error_handler);
#if defined(OS_MACOSX)
DCHECK(!ChromeThread::CurrentlyOn(ChromeThread::UI));
#else
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::DB));
#endif
StartObserving();
}
PasswordChangeProcessor::~PasswordChangeProcessor() {
DCHECK(expected_loop_ == MessageLoop::current());
}
void PasswordChangeProcessor::Observe(NotificationType type,
const NotificationSource& source,
const NotificationDetails& details) {
DCHECK(expected_loop_ == MessageLoop::current());
DCHECK(NotificationType::LOGINS_CHANGED == type);
if (!observing_)
return;
DCHECK(running());
sync_api::WriteTransaction trans(share_handle());
sync_api::ReadNode password_root(&trans);
if (!password_root.InitByTagLookup(kPasswordTag)) {
error_handler()->OnUnrecoverableError(FROM_HERE,
"Server did not create the top-level password node. "
"We might be running against an out-of-date server.");
return;
}
PasswordStoreChangeList* changes =
Details<PasswordStoreChangeList>(details).ptr();
for (PasswordStoreChangeList::iterator change = changes->begin();
change != changes->end(); ++change) {
std::string tag = PasswordModelAssociator::MakeTag(change->form());
switch (change->type()) {
case PasswordStoreChange::ADD: {
sync_api::WriteNode sync_node(&trans);
if (!sync_node.InitUniqueByCreation(syncable::PASSWORDS,
password_root, tag)) {
error_handler()->OnUnrecoverableError(FROM_HERE,
"Failed to create password sync node.");
return;
}
PasswordModelAssociator::WriteToSyncNode(change->form(), &sync_node);
model_associator_->Associate(&tag, sync_node.GetId());
break;
}
case PasswordStoreChange::UPDATE: {
sync_api::WriteNode sync_node(&trans);
int64 sync_id = model_associator_->GetSyncIdFromChromeId(tag);
if (sync_api::kInvalidId == sync_id) {
error_handler()->OnUnrecoverableError(FROM_HERE,
"Unexpected notification for: ");
return;
} else {
if (!sync_node.InitByIdLookup(sync_id)) {
error_handler()->OnUnrecoverableError(FROM_HERE,
"Password node lookup failed.");
return;
}
}
PasswordModelAssociator::WriteToSyncNode(change->form(), &sync_node);
break;
}
case PasswordStoreChange::REMOVE: {
sync_api::WriteNode sync_node(&trans);
int64 sync_id = model_associator_->GetSyncIdFromChromeId(tag);
if (sync_api::kInvalidId == sync_id) {
error_handler()->OnUnrecoverableError(FROM_HERE,
"Unexpected notification");
return;
} else {
if (!sync_node.InitByIdLookup(sync_id)) {
error_handler()->OnUnrecoverableError(FROM_HERE,
"Password node lookup failed.");
return;
}
model_associator_->Disassociate(sync_node.GetId());
sync_node.Remove();
}
break;
}
}
}
}
void PasswordChangeProcessor::ApplyChangesFromSyncModel(
const sync_api::BaseTransaction* trans,
const sync_api::SyncManager::ChangeRecord* changes,
int change_count) {
DCHECK(expected_loop_ == MessageLoop::current());
if (!running())
return;
StopObserving();
sync_api::ReadNode password_root(trans);
if (!password_root.InitByTagLookup(kPasswordTag)) {
error_handler()->OnUnrecoverableError(FROM_HERE,
"Password root node lookup failed.");
return;
}
PasswordModelAssociator::PasswordVector new_passwords;
PasswordModelAssociator::PasswordVector updated_passwords;
PasswordModelAssociator::PasswordVector deleted_passwords;
for (int i = 0; i < change_count; ++i) {
sync_api::ReadNode sync_node(trans);
if (!sync_node.InitByIdLookup(changes[i].id)) {
error_handler()->OnUnrecoverableError(FROM_HERE,
"Password node lookup failed.");
return;
}
// Check that the changed node is a child of the passwords folder.
DCHECK(password_root.GetId() == sync_node.GetParentId());
DCHECK(syncable::PASSWORDS == sync_node.GetModelType());
const sync_pb::PasswordSpecificsData& password_data =
sync_node.GetPasswordSpecifics();
webkit_glue::PasswordForm password;
PasswordModelAssociator::CopyPassword(password_data,
&password);
if (sync_api::SyncManager::ChangeRecord::ACTION_ADD == changes[i].action) {
new_passwords.push_back(password);
} else if (sync_api::SyncManager::ChangeRecord::ACTION_DELETE ==
changes[i].action) {
deleted_passwords.push_back(password);
} else {
DCHECK(sync_api::SyncManager::ChangeRecord::ACTION_UPDATE ==
changes[i].action);
updated_passwords.push_back(password);
}
}
if (!model_associator_->WriteToPasswordStore(&new_passwords,
&updated_passwords,
&deleted_passwords)) {
error_handler()->OnUnrecoverableError(FROM_HERE, "Error writing passwords");
return;
}
StartObserving();
}
void PasswordChangeProcessor::StartImpl(Profile* profile) {
DCHECK(expected_loop_ == MessageLoop::current());
observing_ = true;
}
void PasswordChangeProcessor::StopImpl() {
DCHECK(ChromeThread::CurrentlyOn(ChromeThread::UI));
observing_ = false;
}
void PasswordChangeProcessor::StartObserving() {
DCHECK(expected_loop_ == MessageLoop::current());
notification_registrar_.Add(this,
NotificationType::LOGINS_CHANGED,
NotificationService::AllSources());
}
void PasswordChangeProcessor::StopObserving() {
DCHECK(expected_loop_ == MessageLoop::current());
notification_registrar_.Remove(this,
NotificationType::LOGINS_CHANGED,
NotificationService::AllSources());
}
} // namespace browser_sync
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