blob: 4a7ec427d10cebdbcc12352bc77d1c3f69d0d242 [file] [log] [blame] [edit]
// Copyright 2017 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 "policy/resilient_policy_util.h"
#include <algorithm>
#include <base/files/file_enumerator.h>
#include <base/files/file_util.h>
#include <base/strings/string_number_conversions.h>
#include <base/strings/string_util.h>
namespace policy {
std::map<int, base::FilePath> GetSortedResilientPolicyFilePaths(
const base::FilePath& default_policy_path) {
std::map<int, base::FilePath> sorted_policy_file_paths;
base::FilePath directory = default_policy_path.DirName();
if (!base::PathExists(directory))
return sorted_policy_file_paths;
// Iterate the list of files in the folder, identifying the policy files based
// on the name. Store in the map the absolute paths.
const std::string default_policy_file_name =
default_policy_path.BaseName().value();
base::FileEnumerator file_iter(directory, false, base::FileEnumerator::FILES);
for (base::FilePath child_file = file_iter.Next(); !child_file.empty();
child_file = file_iter.Next()) {
int index;
if (ParseResilientPolicyFilePath(child_file, default_policy_path, &index)) {
sorted_policy_file_paths[index] = child_file;
}
}
return sorted_policy_file_paths;
}
bool ParseResilientPolicyFilePath(const base::FilePath& policy_path,
const base::FilePath& default_policy_path,
int* index_out) {
if (!base::StartsWith(policy_path.value(), default_policy_path.value(),
base::CompareCase::SENSITIVE)) {
return false;
}
if (policy_path == default_policy_path) {
*index_out = 0;
return true;
}
const std::string extension =
policy_path.value().substr(default_policy_path.value().size());
if (extension.empty() || extension[0] != '.' ||
!base::StringToInt(extension.substr(1), index_out) || *index_out <= 0) {
return false;
}
return true;
}
base::FilePath GetResilientPolicyFilePathForIndex(
const base::FilePath& default_policy_path,
int index) {
if (index == 0)
return default_policy_path;
return base::FilePath(default_policy_path.value() + "." +
std::to_string(index));
}
} // namespace policy