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/* $Id: interface.c 1.4 Thu, 07 Nov 2002 22:27:37 +0100 lennart $ */
/*
* This file is part of ifplugd.
*
* ifplugd 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.
*
* ifplugd 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 ifplugd; if not, write to the Free Software Foundation,
* Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
*/
#include <linux/sockios.h>
#include <sys/types.h>
#include <sys/ioctl.h>
#include <net/if.h>
#include <syslog.h>
#include <string.h>
#include <errno.h>
#include <netinet/in.h>
#include <stdio.h>
#include <ctype.h>
#include <stdlib.h>
#include "ethtool-local.h"
#include "interface.h"
#include <libdaemon/dlog.h>
int interface_open(char *iface) {
return socket(AF_INET, SOCK_DGRAM, 0);
}
void interface_up(int fd, char *iface) {
struct ifreq ifr;
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, iface, sizeof(ifr.ifr_name)-1);
if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) {
if (interface_do_message)
daemon_log(LOG_WARNING, "Warning: Could not get interface flags.");
return;
}
if ((ifr.ifr_flags & IFF_UP) == IFF_UP)
return;
if (ioctl(fd, SIOCGIFADDR, &ifr) < 0) {
if (interface_do_message)
daemon_log(LOG_WARNING, "Warning: Could not get interface address.");
} else if (ifr.ifr_addr.sa_family != AF_INET) {
if (interface_do_message)
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(fd, SIOCSIFADDR, &ifr) < 0) {
if (interface_do_message)
daemon_log(LOG_WARNING, "Warning: Could not set interface address.");
}
}
if (ioctl(fd, SIOCGIFFLAGS, &ifr) < 0) {
if (interface_do_message)
daemon_log(LOG_WARNING, "Warning: Could not get interface flags.");
return;
}
ifr.ifr_flags |= IFF_UP;
if (ioctl(fd, SIOCSIFFLAGS, &ifr) < 0)
if (interface_do_message)
daemon_log(LOG_WARNING, "Warning: Could not set interface flags.");
}
interface_status_t interface_detect_beat_mii(int fd, char *iface) {
struct ifreq ifr;
if (interface_auto_up)
interface_up(fd, iface);
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, iface, sizeof(ifr.ifr_name)-1);
if (ioctl(fd, SIOCGMIIPHY, &ifr) == -1) {
if (interface_do_message)
daemon_log(LOG_ERR, "SIOCGMIIPHY failed: %s", strerror(errno));
return IFSTATUS_ERR;
}
((unsigned short*) &ifr.ifr_data)[1] = 1;
if (ioctl(fd, SIOCGMIIREG, &ifr) == -1) {
if (interface_do_message)
daemon_log(LOG_ERR, "SIOCGMIIREG failed: %s", strerror(errno));
return IFSTATUS_ERR;
}
return (((unsigned short*) &ifr.ifr_data)[3] & 0x0016) == 0x0004 ? IFSTATUS_UP : IFSTATUS_DOWN;
}
interface_status_t interface_detect_beat_priv(int fd, char *iface) {
struct ifreq ifr;
if (interface_auto_up)
interface_up(fd, iface);
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, iface, sizeof(ifr.ifr_name)-1);
if (ioctl(fd, SIOCDEVPRIVATE, &ifr) == -1) {
if (interface_do_message)
daemon_log(LOG_ERR, "SIOCDEVPRIVATE failed: %s", strerror(errno));
return IFSTATUS_ERR;
}
((unsigned short*) &ifr.ifr_data)[1] = 1;
if (ioctl(fd, SIOCDEVPRIVATE+1, &ifr) == -1) {
if (interface_do_message)
daemon_log(LOG_ERR, "SIOCDEVPRIVATE+1 failed: %s", strerror(errno));
return IFSTATUS_ERR;
}
return (((unsigned short*) &ifr.ifr_data)[3] & 0x0016) == 0x0004 ? IFSTATUS_UP : IFSTATUS_DOWN;
}
interface_status_t interface_detect_beat_ethtool(int fd, char *iface) {
struct ifreq ifr;
struct ethtool_value edata;
if (interface_auto_up)
interface_up(fd, iface);
memset(&ifr, 0, sizeof(ifr));
strncpy(ifr.ifr_name, iface, sizeof(ifr.ifr_name)-1);
edata.cmd = ETHTOOL_GLINK;
ifr.ifr_data = (caddr_t) &edata;
if (ioctl(fd, SIOCETHTOOL, &ifr) == -1) {
if (interface_do_message)
daemon_log(LOG_ERR, "ETHTOOL_GLINK failed: %s", strerror(errno));
return IFSTATUS_ERR;
}
return edata.data ? IFSTATUS_UP : IFSTATUS_DOWN;
}
interface_status_t interface_detect_beat_wlan(int fd, char *iface) {
FILE *f;
char buf[256];
char *bp;
int l;
if (interface_auto_up)
interface_up(fd, iface);
l = strlen(iface);
if (!(f = fopen("/proc/net/wireless", "r"))) {
if (interface_do_message)
daemon_log(LOG_WARNING, "Failed to open /proc/net/wireless: %s",strerror(errno));
return IFSTATUS_ERR;
}
while (fgets(buf, sizeof(buf)-1, f)) {
bp = buf;
while (*bp && isspace(*bp))
bp++;
if(!strncmp(bp, iface, l) && bp[l]==':') {
/*skip device name */
if (!(bp = strchr(bp,' ')))
break;
bp++;
/*skip status*/
if (!(bp = strchr(bp,' ')))
break;
fclose(f);
if (atoi(bp) > 0)
return IFSTATUS_UP;
else
return IFSTATUS_DOWN;
};
}
if (interface_do_message)
daemon_log(LOG_ERR, "Failed to find wireless interface %s\n", iface);
fclose(f);
return IFSTATUS_ERR;
}
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