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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 <cutils/properties.h>
#include <string>
#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),
config_root_("/"),
session_id_(new chromeos_metrics::PersistentInteger(
kPersistentSessionIdFilename)) {
}
SystemProfileCache::SystemProfileCache(bool testing,
const std::string& config_root)
: initialized_(false),
testing_(testing),
config_root_(config_root),
session_id_(new chromeos_metrics::PersistentInteger(
kPersistentSessionIdFilename)) {
}
bool SystemProfileCache::Initialize() {
CHECK(!initialized_)
<< "this should be called only once in the metrics_daemon lifetime.";
char property_value[PROPERTY_VALUE_MAX];
property_get(metrics::kBuildTargetIdProperty, property_value, "");
profile_.build_target_id = std::string(property_value);
if (profile_.build_target_id.empty()) {
LOG(ERROR) << "System property " << metrics::kBuildTargetIdProperty
<< " is not set.";
return false;
}
property_get(metrics::kChannelProperty, property_value, "");
std::string channel(property_value);
property_get(metrics::kProductVersionProperty, property_value, "");
profile_.version = std::string(property_value);
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;
}
profile_.client_id =
testing_ ? "client_id_test" :
GetPersistentGUID(metrics::kMetricsGUIDFilePath);
profile_.hardware_class = "unknown";
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_.hardware_class);
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_build_target_id(profile_.build_target_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") {
return metrics::SystemProfileProto::CHANNEL_STABLE;
} else if (channel == "dev") {
return metrics::SystemProfileProto::CHANNEL_DEV;
} else if (channel == "beta") {
return metrics::SystemProfileProto::CHANNEL_BETA;
} else if (channel == "canary") {
return metrics::SystemProfileProto::CHANNEL_CANARY;
}
DLOG(INFO) << "unknown channel: " << channel;
return metrics::SystemProfileProto::CHANNEL_UNKNOWN;
}
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