62 lines
1.7 KiB
C++
62 lines
1.7 KiB
C++
/*
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* Copyright (C) 2021 The Android Open Source Project
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*
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <map>
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#include <net/if.h>
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#include "dirent.h"
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#include "netdutils/Status.h"
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#include "netdutils/Utils.h"
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namespace android {
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namespace netdutils {
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StatusOr<std::vector<std::string>> getIfaceNames() {
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std::vector<std::string> ifaceNames;
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DIR* d;
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struct dirent* de;
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if (!(d = opendir("/sys/class/net"))) {
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return statusFromErrno(errno, "Cannot open iface directory");
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}
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while ((de = readdir(d))) {
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if ((de->d_type != DT_DIR) && (de->d_type != DT_LNK)) continue;
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if (de->d_name[0] == '.') continue;
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ifaceNames.push_back(std::string(de->d_name));
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}
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closedir(d);
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return ifaceNames;
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}
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StatusOr<std::map<std::string, uint32_t>> getIfaceList() {
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std::map<std::string, uint32_t> ifacePairs;
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ASSIGN_OR_RETURN(auto ifaceNames, getIfaceNames());
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for (const auto& name : ifaceNames) {
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uint32_t ifaceIndex = if_nametoindex(name.c_str());
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if (ifaceIndex) {
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ifacePairs.insert(std::pair<std::string, uint32_t>(name, ifaceIndex));
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}
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}
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return ifacePairs;
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}
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} // namespace netdutils
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} // namespace android
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