mirror of
https://github.com/Mathewnd/Astral.git
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Matheus
39 lines
1.4 KiB
C
39 lines
1.4 KiB
C
#define _GNU_SOURCE
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <errno.h>
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#include <ifaddrs.h>
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#include <arpa/inet.h>
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#include <net/if.h>
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static void print_error(const char *msg, const int error) {
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fprintf(stderr, "%s: %s: %s\n", program_invocation_short_name, msg, strerror(error));
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}
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int main(const int argc, const char *argv[]) {
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struct ifaddrs *ifaddrs;
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if (getifaddrs(&ifaddrs)) {
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print_error("getifaddrs", errno);
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return EXIT_FAILURE;
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}
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for (struct ifaddrs *ifaddr = ifaddrs; ifaddr; ifaddr = ifaddr->ifa_next) {
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if (ifaddr->ifa_addr->sa_family != AF_INET)
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continue;
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printf("%s: flags: 0x%x%s%s%s\n",
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ifaddr->ifa_name, ifaddr->ifa_flags,
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ifaddr->ifa_flags & IFF_UP ? " UP" : "",
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ifaddr->ifa_flags & IFF_LOOPBACK ? " LOOPBACK" : "",
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ifaddr->ifa_flags & IFF_RUNNING ? " RUNNING" : "");
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printf("%s: address: %s\n", ifaddr->ifa_name, ifaddr->ifa_addr ? inet_ntoa(((struct sockaddr_in *)ifaddr->ifa_addr)->sin_addr) : "?");
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printf("%s: mask: %s\n", ifaddr->ifa_name, ifaddr->ifa_netmask ? inet_ntoa(((struct sockaddr_in *)ifaddr->ifa_netmask)->sin_addr) : "?");
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printf("%s: broadcast: %s\n", ifaddr->ifa_name, ifaddr->ifa_broadaddr ? inet_ntoa(((struct sockaddr_in *)ifaddr->ifa_broadaddr)->sin_addr) : "?");
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}
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freeifaddrs(ifaddrs);
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return EXIT_SUCCESS;
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}
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