84 lines
2.4 KiB
C++
84 lines
2.4 KiB
C++
#ifndef DISTRIBUTION_SERVICE_NETWORK_H
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#define DISTRIBUTION_SERVICE_NETWORK_H
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#include "CCString.h"
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#include "Socket/CCSocket.h"
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#ifdef _WIN32
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#elif __linux__
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#include <sys/ioctl.h>
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#endif
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class NetWorkInfo {
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public:
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static CTL::String getGw() {
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#ifdef _WIN32
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// Windows实现
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return CTL::String("");
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#elif __linux__
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// Linux实现：从/proc/net/route读取默认网关
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std::ifstream routeFile("/proc/net/route");
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std::string line;
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// 跳过标题行
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std::getline(routeFile, line);
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while (std::getline(routeFile, line)) {
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std::istringstream iss(line);
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std::string iface, dest, gateway;
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if (iss >> iface >> dest >> gateway) {
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// 查找默认路由(目标地址为00000000)
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if (dest == "00000000" && gateway != "00000000") {
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// 将十六进制网关地址转换为点分十进制格式
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unsigned int gw;
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std::stringstream ss;
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ss << std::hex << gateway;
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ss >> gw;
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// 注意字节序转换
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gw = (gw & 0xFF) << 24 | ((gw >> 8) & 0xFF) << 16 |
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((gw >> 16) & 0xFF) << 8 | (gw >> 24) & 0xFF;
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in_addr addr;
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addr.s_addr = htonl(gw);
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return CTL::String(inet_ntoa(addr));
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}
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}
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}
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return CTL::String("");
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#endif
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} // 获取网关
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static CTL::String getNm() {
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#ifdef _WIN32
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// Windows实现
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return CTL::String("");
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#elif __linux__
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// Linux实现：尝试从常见网络接口获取子网掩码
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const char* interfaces[] = {"eth0", "wlan0", "enp0s3", "ens33","enp4s0"};
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int sock = socket(AF_INET, SOCK_DGRAM, 0);
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if (sock < 0) {
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return CTL::String("");
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}
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for (int i = 0; i < 5; i++) {
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struct ifreq ifr{};
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strncpy(ifr.ifr_name, interfaces[i], IFNAMSIZ - 1);
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// 获取子网掩码
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if (ioctl(sock, SIOCGIFNETMASK, &ifr) == 0) {
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struct sockaddr_in* netmask = reinterpret_cast<struct sockaddr_in *>(&ifr.ifr_netmask);
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close(sock);
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return CTL::String(inet_ntoa(netmask->sin_addr));
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}
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}
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close(sock);
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return CTL::String("");
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#endif
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} // 获取子网掩码
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};
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#endif |