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// Copyright (c) 2011 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/chromeos/policy/user_policy_token_loader.h"
#include "base/bind.h"
#include "base/file_util.h"
#include "base/metrics/histogram.h"
#include "chrome/browser/policy/cloud/enterprise_metrics.h"
#include "chrome/browser/policy/proto/cloud/device_management_local.pb.h"
#include "content/public/browser/browser_thread.h"
using content::BrowserThread;
namespace {
// Other places can sample on the same UMA counter, so make sure they all do
// it on the same thread (UI).
void SampleUMAOnUIThread(policy::MetricToken sample) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
UMA_HISTOGRAM_ENUMERATION(policy::kMetricToken, sample,
policy::kMetricTokenSize);
}
void SampleUMA(policy::MetricToken sample) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
BrowserThread::PostTask(BrowserThread::UI, FROM_HERE,
base::Bind(&SampleUMAOnUIThread, sample));
}
} // namespace
namespace policy {
namespace em = enterprise_management;
UserPolicyTokenLoader::Delegate::~Delegate() {}
UserPolicyTokenLoader::UserPolicyTokenLoader(
const base::WeakPtr<Delegate>& delegate,
const base::FilePath& cache_file)
: delegate_(delegate),
cache_file_(cache_file) {}
void UserPolicyTokenLoader::Load() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
BrowserThread::PostTask(
BrowserThread::FILE, FROM_HERE,
base::Bind(&UserPolicyTokenLoader::LoadOnFileThread, this));
}
UserPolicyTokenLoader::~UserPolicyTokenLoader() {
}
void UserPolicyTokenLoader::LoadOnFileThread() {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::FILE));
std::string device_token;
std::string device_id;
if (base::PathExists(cache_file_)) {
std::string data;
em::DeviceCredentials device_credentials;
if (file_util::ReadFileToString(cache_file_, &data) &&
device_credentials.ParseFromArray(data.c_str(), data.size())) {
device_token = device_credentials.device_token();
device_id = device_credentials.device_id();
SampleUMA(kMetricTokenLoadSucceeded);
} else {
SampleUMA(kMetricTokenLoadFailed);
}
}
BrowserThread::PostTask(
BrowserThread::UI, FROM_HERE,
base::Bind(&UserPolicyTokenLoader::NotifyOnUIThread,
this,
device_token,
device_id));
}
void UserPolicyTokenLoader::NotifyOnUIThread(const std::string& token,
const std::string& device_id) {
DCHECK(BrowserThread::CurrentlyOn(BrowserThread::UI));
if (delegate_.get())
delegate_->OnTokenLoaded(token, device_id);
}
} // namespace policy
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