| // Copyright 2023 The ChromiumOS Authors |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "net-base/ip_address_utils.h" |
| |
| #include <optional> |
| #include <string> |
| #include <utility> |
| |
| #include <base/strings/string_number_conversions.h> |
| #include <base/strings/string_split.h> |
| |
| namespace net_base { |
| |
| std::optional<std::pair<std::string, int>> SplitCIDRString( |
| const std::string& address_string) { |
| const auto address_parts = base::SplitString( |
| address_string, "/", base::TRIM_WHITESPACE, base::SPLIT_WANT_ALL); |
| if (address_parts.size() != 2) { |
| return std::nullopt; |
| } |
| |
| int prefix_length; |
| if (!base::StringToInt(address_parts[1], &prefix_length)) { |
| return std::nullopt; |
| } |
| return std::make_pair(address_parts[0], prefix_length); |
| } |
| |
| } // namespace net_base |
