mirror of git://git.savannah.gnu.org/guix/dhcp.git
55 lines
1.7 KiB
C
55 lines
1.7 KiB
C
/// GNU Guix DHCP Client.
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///
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/// Copyright © 2015 Rohan Prinja <rohan.prinja@gmail.com>
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///
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/// This program is free software; you can redistribute it and/or modify it
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/// under the terms of the GNU General Public License as published by
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/// the Free Software Foundation; either version 3 of the License, or (at
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/// your option) any later version.
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///
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/// This program is distributed in the hope that it will be useful, but
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/// WITHOUT ANY WARRANTY; without even the implied warranty of
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/// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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/// GNU General Public License for more details.
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///
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/// You should have received a copy of the GNU General Public License
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/// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#include <sys/types.h>
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#include <ifaddrs.h>
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#include <stdio.h>
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void print_interfaces() {
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struct ifaddrs *ifaddr, *itr;
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if (getifaddrs(&ifaddr) == -1) {
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return;
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}
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for (itr = ifaddr; itr; itr = itr->ifa_next) {
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if (itr->ifa_addr == NULL) {
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continue;
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}
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int family = itr->ifa_addr->sa_family;
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if (family == AF_INET || family == AF_INET6) {
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printf("Name: %s, ", itr->ifa_name);
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printf("Address: %s, ", family == AF_INET ? "AF_INET" : family == AF_INET6 ? "AF_INET6" : "");
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printf("Flags: %d\n", itr->ifa_flags);
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}
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}
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}
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char* get_sockaddr_data(struct ifaddrs* ifaddr) {
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return ifaddr->ifa_addr->sa_data;
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}
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struct ifaddrs* get_first_interface_ptr() {
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struct ifaddrs *ifaddr, *itr;
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if (getifaddrs(&ifaddr) == -1) {
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return NULL;
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}
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return ifaddr;
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}
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void free_interfaces(struct ifaddrs *ifaddr) {
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freeifaddrs(ifaddr);
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}
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