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/*
* Copyright (C) 2015 The Android Open Source Project
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#include "uploader/system_profile_cache.h"
#include <base/files/file_util.h>
#include <base/guid.h>
#include <base/logging.h>
#include <base/strings/string_number_conversions.h>
#include <base/strings/string_util.h>
#include <brillo/osrelease_reader.h>
#include <string>
#include <update_engine/client.h>
#include <vector>
#include "constants.h"
#include "persistent_integer.h"
#include "uploader/metrics_log_base.h"
#include "uploader/proto/chrome_user_metrics_extension.pb.h"
namespace {
const char kPersistentSessionIdFilename[] = "Sysinfo.SessionId";
} // namespace
std::string ChannelToString(
const metrics::SystemProfileProto_Channel& channel) {
switch (channel) {
case metrics::SystemProfileProto::CHANNEL_STABLE:
return "STABLE";
case metrics::SystemProfileProto::CHANNEL_DEV:
return "DEV";
case metrics::SystemProfileProto::CHANNEL_BETA:
return "BETA";
case metrics::SystemProfileProto::CHANNEL_CANARY:
return "CANARY";
default:
return "UNKNOWN";
}
}
SystemProfileCache::SystemProfileCache()
: initialized_(false),
testing_(false),
metrics_directory_(metrics::kMetricsdDirectory),
session_id_(new chromeos_metrics::PersistentInteger(
kPersistentSessionIdFilename, metrics_directory_)) {}
SystemProfileCache::SystemProfileCache(bool testing,
const base::FilePath& metrics_directory)
: initialized_(false),
testing_(testing),
metrics_directory_(metrics_directory),
session_id_(new chromeos_metrics::PersistentInteger(
kPersistentSessionIdFilename, metrics_directory)) {}
bool SystemProfileCache::Initialize() {
CHECK(!initialized_)
<< "this should be called only once in the metrics_daemon lifetime.";
brillo::OsReleaseReader reader;
std::string channel;
if (testing_) {
reader.LoadTestingOnly(metrics_directory_);
channel = "unknown";
} else {
reader.Load();
auto client = update_engine::UpdateEngineClient::CreateInstance();
if (!client) {
LOG(ERROR) << "failed to create the update engine client";
return false;
}
if (!client->GetChannel(&channel)) {
LOG(ERROR) << "failed to read the current channel from update engine.";
return false;
}
}
if (!reader.GetString(metrics::kProductId, &profile_.product_id)
|| profile_.product_id.empty()) {
LOG(ERROR) << "product_id is not set.";
return false;
}
if (!reader.GetString(metrics::kProductVersion, &profile_.version)) {
LOG(ERROR) << "failed to read the product version";
}
if (channel.empty() || profile_.version.empty()) {
// If the channel or version is missing, the image is not official.
// In this case, set the channel to unknown and the version to 0.0.0.0 to
// avoid polluting the production data.
channel = "";
profile_.version = metrics::kDefaultVersion;
}
std::string guid_path = metrics_directory_.Append(
metrics::kMetricsGUIDFileName).value();
profile_.client_id = testing_ ?
"client_id_test" :
GetPersistentGUID(guid_path);
profile_.model_manifest_id = "unknown";
if (!testing_) {
brillo::KeyValueStore weave_config;
if (!weave_config.Load(base::FilePath(metrics::kWeaveConfigurationFile))) {
LOG(ERROR) << "Failed to load the weave configuration file.";
} else if (!weave_config.GetString(metrics::kModelManifestId,
&profile_.model_manifest_id)) {
LOG(ERROR) << "The model manifest id (model_id) is undefined in "
<< metrics::kWeaveConfigurationFile;
}
}
profile_.channel = ProtoChannelFromString(channel);
// Increment the session_id everytime we initialize this. If metrics_daemon
// does not crash, this should correspond to the number of reboots of the
// system.
session_id_->Add(1);
profile_.session_id = static_cast<int32_t>(session_id_->Get());
initialized_ = true;
return initialized_;
}
bool SystemProfileCache::InitializeOrCheck() {
return initialized_ || Initialize();
}
bool SystemProfileCache::Populate(
metrics::ChromeUserMetricsExtension* metrics_proto) {
CHECK(metrics_proto);
if (not InitializeOrCheck()) {
return false;
}
// The client id is hashed before being sent.
metrics_proto->set_client_id(
metrics::MetricsLogBase::Hash(profile_.client_id));
metrics_proto->set_session_id(profile_.session_id);
// Sets the product id.
metrics_proto->set_product(9);
metrics::SystemProfileProto* profile_proto =
metrics_proto->mutable_system_profile();
profile_proto->mutable_hardware()->set_hardware_class(
profile_.model_manifest_id);
profile_proto->set_app_version(profile_.version);
profile_proto->set_channel(profile_.channel);
metrics::SystemProfileProto_BrilloDeviceData* device_data =
profile_proto->mutable_brillo();
device_data->set_product_id(profile_.product_id);
return true;
}
std::string SystemProfileCache::GetPersistentGUID(
const std::string& filename) {
std::string guid;
base::FilePath filepath(filename);
if (!base::ReadFileToString(filepath, &guid)) {
guid = base::GenerateGUID();
// If we can't read or write the file, the guid will not be preserved during
// the next reboot. Crash.
CHECK(base::WriteFile(filepath, guid.c_str(), guid.size()));
}
return guid;
}
metrics::SystemProfileProto_Channel SystemProfileCache::ProtoChannelFromString(
const std::string& channel) {
if (channel == "stable-channel") {
return metrics::SystemProfileProto::CHANNEL_STABLE;
} else if (channel == "dev-channel") {
return metrics::SystemProfileProto::CHANNEL_DEV;
} else if (channel == "beta-channel") {
return metrics::SystemProfileProto::CHANNEL_BETA;
} else if (channel == "canary-channel") {
return metrics::SystemProfileProto::CHANNEL_CANARY;
}
DLOG(INFO) << "unknown channel: " << channel;
return metrics::SystemProfileProto::CHANNEL_UNKNOWN;
}
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