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// Copyright (c) 2006-2008 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/force_tls_persister.h"
#include "base/file_path.h"
#include "base/file_util.h"
#include "base/message_loop.h"
#include "base/path_service.h"
#include "base/thread.h"
#include "chrome/common/chrome_paths.h"
#include "net/base/force_tls_state.h"
ForceTLSPersister::ForceTLSPersister(net::ForceTLSState* state,
base::Thread* file_thread)
: state_is_dirty_(false),
force_tls_state_(state),
file_thread_(file_thread) {
state->SetDelegate(this);
Task* task = NewRunnableMethod(this, &ForceTLSPersister::LoadState);
file_thread->message_loop()->PostDelayedTask(FROM_HERE, task,
1000 /* 1 second */);
}
static FilePath GetStateFile() {
FilePath user_data_dir;
PathService::Get(chrome::DIR_USER_DATA, &user_data_dir);
return user_data_dir.Append("ForceTLSState");
}
void ForceTLSPersister::LoadState() {
// Runs on |file_thread_|
AutoLock locked_(lock_);
DCHECK(file_thread_->message_loop() == MessageLoop::current());
std::string state;
if (!file_util::ReadFileToString(GetStateFile(), &state))
return;
force_tls_state_->Deserialise(state);
}
void ForceTLSPersister::StateIsDirty(net::ForceTLSState* state) {
// Runs on arbitary thread, may not block nor reenter |force_tls_state_|
AutoLock locked_(lock_);
DCHECK(state == force_tls_state_);
if (state_is_dirty_)
return; // we already have a serialisation scheduled
Task* task = NewRunnableMethod(this, &ForceTLSPersister::SerialiseState);
file_thread_->message_loop()->PostDelayedTask(FROM_HERE, task,
1000 /* 1 second */);
state_is_dirty_ = true;
}
void ForceTLSPersister::SerialiseState() {
// Runs on |file_thread_|
AutoLock locked_(lock_);
DCHECK(file_thread_->message_loop() == MessageLoop::current());
DCHECK(state_is_dirty_);
state_is_dirty_ = false;
std::string state;
if (!force_tls_state_->Serialise(&state))
return;
file_util::WriteFile(GetStateFile(), state.data(), state.size());
}
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