martinzink commented on a change in pull request #1116: URL: https://github.com/apache/nifi-minifi-cpp/pull/1116#discussion_r658032021
########## File path: libminifi/src/utils/NetworkInterfaceInfo.cpp ########## @@ -0,0 +1,155 @@ +/** + * Licensed to the Apache Software Foundation (ASF) under one or more + * contributor license agreements. See the NOTICE file distributed with + * this work for additional information regarding copyright ownership. + * The ASF licenses this file to You under the Apache License, Version 2.0 + * (the "License"); you may not use this file except in compliance with + * the License. You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include "utils/NetworkInterfaceInfo.h" + +#ifdef WIN32 +#include <Windows.h> +#include <winsock2.h> +#include <iphlpapi.h> +#include <WS2tcpip.h> +#pragma comment(lib, "IPHLPAPI.lib") +#else +#include <unistd.h> +#include <netinet/in.h> +#include <sys/socket.h> +#include <net/if.h> +#include <arpa/inet.h> +#include <ifaddrs.h> +#endif + +namespace org { +namespace apache { +namespace nifi { +namespace minifi { +namespace utils { + +#ifdef WIN32 +std::string utf8_encode(const std::wstring& wstr) { + if (wstr.empty()) + return std::string(); + int size_needed = WideCharToMultiByte(CP_UTF8, 0, &wstr[0], wstr.size(), nullptr, 0, nullptr, nullptr); + std::string result_string(size_needed, 0); + WideCharToMultiByte(CP_UTF8, 0, &wstr[0], wstr.size(), &result_string[0], size_needed, nullptr, nullptr); + return result_string; +} + +NetworkInterfaceInfo::NetworkInterfaceInfo(const IP_ADAPTER_ADDRESSES* adapter) { + name_ = utf8_encode(adapter->FriendlyName); + for (auto unicast_address = adapter->FirstUnicastAddress; unicast_address != nullptr; unicast_address = unicast_address->Next) { + if (unicast_address->Address.lpSockaddr->sa_family == AF_INET) { + char address_buffer[INET_ADDRSTRLEN]; + void* sin_address = &(reinterpret_cast<SOCKADDR_IN*>(unicast_address->Address.lpSockaddr)->sin_addr); + InetNtopA(AF_INET, sin_address, address_buffer, INET_ADDRSTRLEN); + ip_v4_addresses_.push_back(address_buffer); + } else if (unicast_address->Address.lpSockaddr->sa_family == AF_INET6) { + char address_buffer[INET6_ADDRSTRLEN]; + void* sin_address = &(reinterpret_cast<SOCKADDR_IN*>(unicast_address->Address.lpSockaddr)->sin_addr); + InetNtopA(AF_INET6, sin_address, address_buffer, INET6_ADDRSTRLEN); + ip_v6_addresses_.push_back(address_buffer); + } + } + running_ = adapter->OperStatus == IfOperStatusUp; + loopback_ = adapter->IfType == IF_TYPE_SOFTWARE_LOOPBACK; +} +#else +NetworkInterfaceInfo::NetworkInterfaceInfo(const struct ifaddrs* ifa) { + name_ = ifa->ifa_name; + void* sin_address = &(reinterpret_cast<struct sockaddr_in*>(ifa->ifa_addr)->sin_addr); + if (ifa->ifa_addr->sa_family == AF_INET) { + char address_buffer[INET_ADDRSTRLEN]; + inet_ntop(AF_INET, sin_address, address_buffer, INET_ADDRSTRLEN); + ip_v4_addresses_.push_back(address_buffer); + } else if (ifa->ifa_addr->sa_family == AF_INET6) { + char address_buffer[INET6_ADDRSTRLEN]; + inet_ntop(AF_INET6, sin_address, address_buffer, INET6_ADDRSTRLEN); + ip_v6_addresses_.push_back(address_buffer); + } + running_ = (ifa->ifa_flags & IFF_RUNNING); + loopback_ = (ifa->ifa_flags & IFF_LOOPBACK); +} +#endif + +std::unordered_map<std::string, NetworkInterfaceInfo> NetworkInterfaceInfo::getNetworkInterfaceInfos(std::function<bool(const NetworkInterfaceInfo&)> filter, + const utils::optional<uint32_t> max_interfaces) { + std::unordered_map<std::string, NetworkInterfaceInfo> network_adapters; Review comment: Yeah, I used an `unordered_map` so I could easily lookup the values when I merge different ip addresses belonging to the same interface, so they are combined in one `NetworkInterfaceInfo`.* But I guess the number of network interfaces shouldnt be large, so we shouldnt worry about the performance difference between `vector` and `unordered_map`? *On unix its a linked list where the ipaddresses come one by one regardless of their respective interface, on the other hand on windows the network interfaces form a linked list (with all their addresses in a nested linked list). -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. For queries about this service, please contact Infrastructure at: [email protected]
