mirror of
https://github.com/zerotier/ZeroTierOne.git
synced 2025-09-05 22:32:55 +02:00
69 lines
No EOL
2.7 KiB
C++
69 lines
No EOL
2.7 KiB
C++
#include "diagnostic/dump_interfaces.hpp"
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#include <sys/types.h>
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#include <ifaddrs.h>
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#include <net/if.h>
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#include <sys/ioctl.h>
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#include <arpa/inet.h>
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#include <netinet/in.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/socket.h>
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#include <sstream>
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void dumpInterfaces(std::stringstream& dump) {
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int sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_IP);
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struct ifconf ifc;
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char buf[1024];
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ifc.ifc_len = sizeof(buf);
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ifc.ifc_buf = buf;
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ioctl(sock, SIOCGIFCONF, &ifc);
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struct ifreq *it = ifc.ifc_req;
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const struct ifreq * const end = it + (ifc.ifc_len / sizeof(struct ifreq));
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for(; it != end; ++it) {
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struct ifreq ifr;
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strcpy(ifr.ifr_name, it->ifr_name);
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if(ioctl(sock, SIOCGIFFLAGS, &ifr) == 0) {
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if (!(ifr.ifr_flags & IFF_LOOPBACK)) { // skip loopback
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dump << "Interface: " << ifr.ifr_name << "\n";
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if (ioctl(sock, SIOCGIFMTU, &ifr) == 0) {
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dump << "MTU: " << ifr.ifr_mtu << "\n";
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}
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if (ioctl(sock, SIOCGIFHWADDR, &ifr) == 0) {
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unsigned char mac_addr[6];
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memcpy(mac_addr, ifr.ifr_hwaddr.sa_data, 6);
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char macStr[18];
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sprintf(macStr, "%02x:%02x:%02x:%02x:%02x:%02x",
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mac_addr[0],
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mac_addr[1],
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mac_addr[2],
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mac_addr[3],
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mac_addr[4],
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mac_addr[5]);
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dump << "MAC: " << macStr << "\n";
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}
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dump << "Addresses:" << "\n";
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struct ifaddrs *ifap, *ifa;
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void *addr;
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getifaddrs(&ifap);
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for(ifa = ifap; ifa; ifa = ifa->ifa_next) {
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if(strcmp(ifr.ifr_name, ifa->ifa_name) == 0 && ifa->ifa_addr != NULL) {
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char stringBuffer[128];
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if (ifa->ifa_addr->sa_family == AF_INET) {
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struct sockaddr_in *ipv4 = (struct sockaddr_in*)ifa->ifa_addr;
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addr = &ipv4->sin_addr;
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} else if (ifa->ifa_addr->sa_family == AF_INET6) {
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struct sockaddr_in6 *ipv6 = (struct sockaddr_in6*)ifa->ifa_addr;
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addr = &ipv6->sin6_addr;
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} else {
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continue;
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}
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inet_ntop(ifa->ifa_addr->sa_family, addr, stringBuffer, sizeof(stringBuffer));
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dump << stringBuffer << "\n";
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}
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}
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dump << "\n";
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}
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}
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}
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close(sock);
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}
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