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/*
* wavemon - a wireless network monitoring aplication
*
* Copyright (c) 2001-2002 Jan Morgenstern <jan@jm-music.de>
*
* wavemon is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License as published by the Free
* Software Foundation; either version 2, or (at your option) any later
* version.
*
* wavemon is distributed in the hope that it will be useful, but WITHOUT ANY
* WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along
* with wavemon; see the file COPYING. If not, write to the Free Software
* Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <stdio.h>
#include <unistd.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <string.h>
#include "net_if.h"
void if_getinf(char *ifname, struct if_info *info)
{
int skfd;
struct ifreq ifr;
if ((skfd = socket(AF_INET, SOCK_DGRAM, 0)) < 0) {
fprintf(stderr, "fatal error: cannot open socket\n");
exit(-1);
}
memset(&ifr, 0, sizeof(struct ifreq));
memset(info, 0, sizeof(struct if_info));
strncpy(ifr.ifr_name, ifname, IFNAMSIZ);
if (ioctl(skfd, SIOCGIFADDR, &ifr) >= 0)
memcpy(&info->addr, &ifr.ifr_addr.sa_data[2], 4);
if (ioctl(skfd, SIOCGIFHWADDR, &ifr) >= 0)
memcpy(&info->hwaddr, &ifr.ifr_hwaddr.sa_data, 6);
if (ioctl(skfd, SIOCGIFNETMASK, &ifr) >= 0)
memcpy(&info->netmask, &ifr.ifr_netmask.sa_data[2], 4);
if (ioctl(skfd, SIOCGIFBRDADDR, &ifr) >= 0)
memcpy(&info->bcast, &ifr.ifr_broadaddr.sa_data[2], 4);
close(skfd);
}
void if_getstat(char *ifname, struct if_stat *stat)
{
FILE *fd;
char tmp[0x100];
unsigned long d;
char *lp;
if ((fd = fopen("/proc/net/dev", "r")) < 0) {
fprintf(stderr, "fatal error: cannot open /proc/net/dev\n");
exit(-1);
}
while (fgets(tmp, 0x100, fd)) {
lp = tmp + strspn(tmp, " ");
if (!strncmp(lp, ifname, strlen(ifname))) {
lp += strlen(ifname) + 1;
lp += strspn(lp, " ");
sscanf(lp, "%llu %llu %lu %lu %lu %lu %lu %lu %llu %llu",
&stat->rx_bytes, &stat->rx_packets, &d, &d, &d, &d, &d, &d,
&stat->tx_bytes, &stat->tx_packets);
}
}
fclose(fd);
}
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