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/* $Id$ */
/*
* This file is part of waproamd.
*
* waproamd 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 of the License, or
* (at your option) any later version.
*
* waproamd 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 waproamd; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <stdio.h>
#include <errno.h>
#include <string.h>
#include <stdlib.h>
#include <assert.h>
#include <unistd.h>
#include <sys/ioctl.h>
#include <netinet/in.h>
#include <libdaemon/dlog.h>
#include "interface.h"
#include "util.h"
#include "wireless.h"
struct interface *interface_open(char *name) {
struct interface* i = NULL;
if (!(i = (struct interface*) malloc(sizeof(struct interface))))
return NULL;
memset(i, 0, sizeof(struct interface));
strncpy(i->name, name, IFNAMSIZ);
if ((i->fd = socket(PF_INET, SOCK_DGRAM, 0)) < 0) {
daemon_log(LOG_ERR, "socket(): %s\n", strerror(errno));
goto fail;
}
return i;
fail:
if (i)
interface_close(i);
return NULL;
}
void interface_close(struct interface *i) {
assert(i);
if (i->fd >= 0)
close(i->fd);
free(i);
}
void interface_up(struct interface *i) {
struct ifreq ifr;
assert(i && i->fd >= 0 && i->name);
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, i->name, sizeof(ifr.ifr_name)-1);
if (ioctl(i->fd, SIOCGIFFLAGS, &ifr) < 0) {
daemon_log(LOG_WARNING, "Warning: Could not get interface flags.");
return;
}
if ((ifr.ifr_flags & IFF_UP) == IFF_UP)
return;
if (ioctl(i->fd, SIOCGIFADDR, &ifr) < 0)
daemon_log(LOG_WARNING, "Warning: Could not get interface address.");
else if (ifr.ifr_addr.sa_family != AF_INET)
daemon_log(LOG_WARNING, "Warning: The interface is not IP-based.");
else {
((struct sockaddr_in *)(&ifr.ifr_addr))->sin_addr.s_addr = INADDR_ANY;
if (ioctl(i->fd, SIOCSIFADDR, &ifr) < 0)
daemon_log(LOG_WARNING, "Warning: Could not set interface address.");
}
if (ioctl(i->fd, SIOCGIFFLAGS, &ifr) < 0) {
daemon_log(LOG_WARNING, "Warning: Could not get interface flags.");
return;
}
ifr.ifr_flags |= IFF_UP;
if (ioctl(i->fd, SIOCSIFFLAGS, &ifr) < 0)
daemon_log(LOG_WARNING, "Warning: Could not set interface flags.");
daemon_log(LOG_INFO, "Interface set to status UP.");
}
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