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72 lines
2.3 KiB
72 lines
2.3 KiB
// Copyright 2017 The Chromium OS Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style license that can be
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// found in the LICENSE file.
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#include "policy/resilient_policy_util.h"
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#include <algorithm>
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#include <base/files/file_enumerator.h>
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#include <base/files/file_util.h>
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#include <base/strings/string_number_conversions.h>
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#include <base/strings/string_util.h>
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namespace policy {
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std::map<int, base::FilePath> GetSortedResilientPolicyFilePaths(
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const base::FilePath& default_policy_path) {
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std::map<int, base::FilePath> sorted_policy_file_paths;
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base::FilePath directory = default_policy_path.DirName();
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if (!base::PathExists(directory))
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return sorted_policy_file_paths;
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// Iterate the list of files in the folder, identifying the policy files based
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// on the name. Store in the map the absolute paths.
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const std::string default_policy_file_name =
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default_policy_path.BaseName().value();
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base::FileEnumerator file_iter(directory, false, base::FileEnumerator::FILES);
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for (base::FilePath child_file = file_iter.Next(); !child_file.empty();
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child_file = file_iter.Next()) {
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int index;
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if (ParseResilientPolicyFilePath(child_file, default_policy_path, &index)) {
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sorted_policy_file_paths[index] = child_file;
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}
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}
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return sorted_policy_file_paths;
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}
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bool ParseResilientPolicyFilePath(const base::FilePath& policy_path,
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const base::FilePath& default_policy_path,
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int* index_out) {
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if (!base::StartsWith(policy_path.value(), default_policy_path.value(),
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base::CompareCase::SENSITIVE)) {
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return false;
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}
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if (policy_path == default_policy_path) {
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*index_out = 0;
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return true;
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}
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const std::string extension =
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policy_path.value().substr(default_policy_path.value().size());
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if (extension.empty() || extension[0] != '.' ||
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!base::StringToInt(extension.substr(1), index_out) || *index_out <= 0) {
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return false;
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}
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return true;
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}
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base::FilePath GetResilientPolicyFilePathForIndex(
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const base::FilePath& default_policy_path,
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int index) {
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if (index == 0)
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return default_policy_path;
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return base::FilePath(default_policy_path.value() + "." +
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std::to_string(index));
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}
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} // namespace policy
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