blob: 9ca8b72f013fe86f8be2455d43210cc58c2f7a85 [file] [log] [blame]
// Copyright 2013 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/installer/setup/uninstall_metrics.h"
#include <memory>
#include <string>
#include "base/check.h"
#include "base/files/file_path.h"
#include "base/json/json_file_value_serializer.h"
#include "base/notreached.h"
#include "base/strings/string_split.h"
#include "base/strings/utf_string_conversions.h"
#include "base/values.h"
#include "chrome/common/pref_names.h"
#include "chrome/installer/setup/setup_constants.h"
#include "components/metrics/metrics_pref_names.h"
namespace installer {
namespace {
// Appends an URL query parameter to |metrics| for each item in
// |uninstall_metrics_dict|. Returns true if |metrics| was modified; otherwise,
// false.
bool BuildUninstallMetricsString(const base::Value& uninstall_metrics_dict,
base::string16* metrics) {
DCHECK(uninstall_metrics_dict.is_dict());
DCHECK(metrics);
bool has_values = false;
for (const auto& item : uninstall_metrics_dict.DictItems()) {
has_values = true;
metrics->push_back(L'&');
metrics->append(base::UTF8ToWide(item.first));
metrics->push_back(L'=');
if (item.second.is_string())
metrics->append(base::UTF8ToWide(item.second.GetString()));
else
NOTREACHED() << item.second.type();
}
return has_values;
}
} // namespace
bool ExtractUninstallMetrics(const base::Value& root,
base::string16* uninstall_metrics_string) {
DCHECK(root.is_dict());
// Make sure that the user wants us reporting metrics. If not, don't add our
// uninstall metrics.
auto path =
base::SplitStringPiece(metrics::prefs::kMetricsReportingEnabled, ".",
base::KEEP_WHITESPACE, base::SPLIT_WANT_NONEMPTY);
const auto* value = root.FindPathOfType(path, base::Value::Type::BOOLEAN);
if (!value || !value->GetBool())
return false;
value = root.FindKeyOfType(installer::kUninstallMetricsName,
base::Value::Type::DICTIONARY);
if (!value)
return false;
return BuildUninstallMetricsString(*value, uninstall_metrics_string);
}
bool ExtractUninstallMetricsFromFile(const base::FilePath& file_path,
base::string16* uninstall_metrics_string) {
JSONFileValueDeserializer json_deserializer(file_path);
std::string json_error_string;
std::unique_ptr<base::Value> root =
json_deserializer.Deserialize(nullptr, nullptr);
if (!root)
return false;
// Preferences should always have a dictionary root.
if (!root->is_dict())
return false;
return ExtractUninstallMetrics(*root, uninstall_metrics_string);
}
} // namespace installer