// Copyright 2016 The Chromium OS 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 "libinstallattributes.h"
|
|
#include <base/files/file_util.h>
|
#include <base/logging.h>
|
|
#include "bindings/install_attributes.pb.h"
|
|
namespace {
|
|
// Written by cryptohome or by lockbox-cache after signature verification and
|
// thus guaranteed to be unadulterated.
|
const char kInstallAttributesPath[] = "/run/lockbox/install_attributes.pb";
|
|
} // namespace
|
|
// The source of truth for these constants is Chromium
|
// //chrome/browser/chromeos/settings/install_attributes.cc.
|
const char InstallAttributesReader::kAttrMode[] = "enterprise.mode";
|
const char InstallAttributesReader::kDeviceModeConsumer[] = "consumer";
|
const char InstallAttributesReader::kDeviceModeEnterprise[] = "enterprise";
|
const char InstallAttributesReader::kDeviceModeEnterpriseAD[] = "enterprise_ad";
|
const char InstallAttributesReader::kDeviceModeLegacyRetail[] = "kiosk";
|
const char InstallAttributesReader::kDeviceModeConsumerKiosk[] =
|
"consumer_kiosk";
|
|
InstallAttributesReader::InstallAttributesReader()
|
: install_attributes_path_(kInstallAttributesPath) {
|
}
|
|
InstallAttributesReader::~InstallAttributesReader() {
|
}
|
|
const std::string& InstallAttributesReader::GetAttribute(
|
const std::string& key) {
|
// By its very nature of immutable attributes, once read successfully the
|
// attributes can never change and thus never need reloading.
|
if (!initialized_) {
|
TryToLoad();
|
}
|
|
const auto entry = attributes_.find(key);
|
if (entry == attributes_.end()) {
|
return empty_string_;
|
}
|
return entry->second;
|
}
|
|
bool InstallAttributesReader::IsLocked() {
|
if (!initialized_) {
|
TryToLoad();
|
}
|
return initialized_;
|
}
|
|
void InstallAttributesReader::TryToLoad() {
|
std::string contents;
|
if (!base::ReadFileToString(install_attributes_path_, &contents)) {
|
// May fail during OOBE or early in the boot process.
|
return;
|
}
|
|
// Parse errors are unrecoverable (lockbox does atomic write), thus mark as
|
// inititialized already before checking for parse errors.
|
initialized_ = true;
|
|
cryptohome::SerializedInstallAttributes install_attributes;
|
if (!install_attributes.ParseFromString(contents)) {
|
LOG(ERROR) << "Can't parse install attributes.";
|
return;
|
}
|
|
for (int i = 0; i < install_attributes.attributes_size(); ++i) {
|
const cryptohome::SerializedInstallAttributes_Attribute& attribute =
|
install_attributes.attributes(i);
|
// Cast value to C string and back to remove trailing zero.
|
attributes_[attribute.name()] = std::string(attribute.value().c_str());
|
}
|
}
|
