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109 lines
2.3 KiB
109 lines
2.3 KiB
/*
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Copyright Jeroen Vreeken (jeroen@vreeken.net), 2016
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This program is free software: you can redistribute it and/or modify
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it 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
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but 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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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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*/
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#include <eth_ar/eth_ar.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <string.h>
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#include <sys/types.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <unistd.h>
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#include <linux/if.h>
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void usage(void)
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{
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printf("Usage:\n");
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printf("\n");
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printf("eth_ar_if <dev>\n");
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printf("eth_ar_if <dev> <call>\n");
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printf("\n");
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}
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int main(int argc, char **argv)
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{
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int sock;
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bool set_call = false;
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char *call = "";
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char *dev = "";
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struct ifreq ifr = {};
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if (argc < 2) {
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usage();
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goto err_usage;
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}
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dev = argv[1];
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if (argc > 2) {
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set_call = true;
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call = argv[2];
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}
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sock = socket(AF_INET, SOCK_DGRAM, 0);
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if (sock < 0) {
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perror("Could not open socket");
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goto err_socket;
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}
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strncpy(ifr.ifr_name, dev, IFNAMSIZ-1);
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if (!set_call) {
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char callsign[ETH_AR_CALL_SIZE];
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int ssid;
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bool multicast;
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uint8_t *mac;
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if (ioctl(sock, SIOCGIFHWADDR, &ifr) < 0) {
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perror("Could not get HW address");
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goto err_gethw;
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}
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mac = (uint8_t*)ifr.ifr_hwaddr.sa_data;
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if (eth_ar_mac2call(callsign, &ssid, &multicast, mac)) {
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perror("Could not extract callsign\n");
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goto err_getmac;
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}
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printf("%s: Call: %s-%d\n", dev, call, ssid);
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} else {
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uint8_t mac[6];
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if (eth_ar_callssid2mac(mac, call, false)) {
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perror("Could not convert callsign\n");
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goto err_setmac;
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}
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memcpy(ifr.ifr_hwaddr.sa_data, mac, 6);
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if (ioctl(sock, SIOCSIFHWADDR, &ifr) < 0) {
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perror("Could not set HW address");
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goto err_sethw;
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}
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}
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close(sock);
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return 0;
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err_setmac:
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err_getmac:
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err_gethw:
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err_sethw:
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close(sock);
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err_socket:
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err_usage:
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return -1;
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}
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