150 lines
4.1 KiB
C
150 lines
4.1 KiB
C
/* $Id: netbsd.c,v 1.1 2003/08/24 20:01:48 bwalle Exp $ */
|
|
|
|
/*****************************************************************************
|
|
*
|
|
* checkinterface()
|
|
*
|
|
* check if a given interface exists, return TRUE if it does and FALSE if not
|
|
*
|
|
****************************************************************************/
|
|
int checkinterface()
|
|
{
|
|
int validinterface = FALSE;
|
|
static int mib_name[] = { CTL_NET, PF_ROUTE, 0, 0, NET_RT_IFLIST, 0 };
|
|
static char *buf;
|
|
static int alloc;
|
|
char *lim, *next;
|
|
struct if_msghdr *ifm, *nextifm;
|
|
struct sockaddr_dl *sdl;
|
|
size_t needed;
|
|
char s[32];
|
|
|
|
if (sysctl(mib_name, 6, NULL, &needed, NULL, 0) < 0)
|
|
return FALSE;
|
|
if (alloc < (signed long) needed)
|
|
{
|
|
if (buf != NULL)
|
|
free (buf);
|
|
buf = malloc(needed);
|
|
if (buf == NULL)
|
|
return FALSE;
|
|
alloc = needed;
|
|
}
|
|
|
|
if (sysctl(mib_name, 6, buf, &needed, NULL, 0) < 0)
|
|
return FALSE;
|
|
lim = buf + needed;
|
|
next = buf;
|
|
while ((next < lim) && (validinterface == 0))
|
|
{
|
|
ifm = (struct if_msghdr *)next;
|
|
if (ifm->ifm_type != RTM_IFINFO)
|
|
return FALSE;
|
|
next += ifm->ifm_msglen;
|
|
|
|
while (next < lim)
|
|
{
|
|
nextifm = (struct if_msghdr *)next;
|
|
if (nextifm->ifm_type != RTM_NEWADDR)
|
|
break;
|
|
next += nextifm->ifm_msglen;
|
|
}
|
|
|
|
if (ifm->ifm_flags & IFF_UP)
|
|
{
|
|
sdl = (struct sockaddr_dl *)(ifm + 1);
|
|
strncpy(s, sdl->sdl_data, sdl->sdl_nlen);
|
|
s[sdl->sdl_nlen] = '\0';
|
|
/* search for the right network interface */
|
|
if (sdl->sdl_family != AF_LINK)
|
|
continue;
|
|
if (strcmp(s, ifdata.if_name) != 0)
|
|
continue;
|
|
else
|
|
{
|
|
validinterface = TRUE;
|
|
break; /* stop searching */
|
|
}
|
|
}
|
|
}
|
|
return validinterface;
|
|
}
|
|
/******************************************************************************
|
|
*
|
|
* get_stat()
|
|
*
|
|
* this code is based on gkrellm code (thanks guys!)
|
|
*
|
|
****************************************************************************/
|
|
|
|
int get_stat(void)
|
|
{
|
|
static int mib_name[] = { CTL_NET, PF_ROUTE, 0, 0, NET_RT_IFLIST, 0 };
|
|
static char *buf;
|
|
static int alloc;
|
|
char *lim, *next;
|
|
struct if_msghdr *ifm, *nextifm;
|
|
struct sockaddr_dl *sdl;
|
|
char s[32];
|
|
size_t needed;
|
|
unsigned long rx_o, tx_o;
|
|
|
|
if (sysctl(mib_name, 6, NULL, &needed, NULL, 0) < 0)
|
|
return 1;
|
|
if (alloc < (signed long) needed)
|
|
{
|
|
if (buf != NULL)
|
|
free (buf);
|
|
buf = malloc(needed);
|
|
if (buf == NULL)
|
|
return 1;
|
|
alloc = needed;
|
|
}
|
|
|
|
if (sysctl(mib_name, 6, buf, &needed, NULL, 0) < 0)
|
|
return 1;
|
|
lim = buf + needed;
|
|
next = buf;
|
|
while (next < lim)
|
|
{
|
|
ifm = (struct if_msghdr *)next;
|
|
if (ifm->ifm_type != RTM_IFINFO)
|
|
return 1;
|
|
next += ifm->ifm_msglen;
|
|
|
|
while (next < lim)
|
|
{
|
|
nextifm = (struct if_msghdr *)next;
|
|
if (nextifm->ifm_type != RTM_NEWADDR)
|
|
break;
|
|
next += nextifm->ifm_msglen;
|
|
}
|
|
|
|
if (ifm->ifm_flags & IFF_UP)
|
|
{
|
|
sdl = (struct sockaddr_dl *)(ifm + 1);
|
|
strncpy(s, sdl->sdl_data, sdl->sdl_nlen);
|
|
s[sdl->sdl_nlen] = '\0';
|
|
|
|
/* search for the right network interface */
|
|
if (strcmp(s, ifdata.if_name) != 0)
|
|
continue;
|
|
|
|
rx_o = stats.rx_bytes; tx_o = stats.tx_bytes;
|
|
/* write stats */
|
|
stats.tx_packets = ifm->ifm_data.ifi_opackets;
|
|
stats.rx_packets = ifm->ifm_data.ifi_ipackets;
|
|
stats.rx_bytes = ifm->ifm_data.ifi_ibytes;
|
|
stats.tx_bytes = ifm->ifm_data.ifi_obytes;
|
|
stats.rx_errors = ifm->ifm_data.ifi_ierrors;
|
|
stats.tx_errors = ifm->ifm_data.ifi_oerrors;
|
|
|
|
if (rx_o > stats.rx_bytes)
|
|
stats.rx_over++;
|
|
if (tx_o > stats.tx_bytes)
|
|
stats.tx_over++;
|
|
}
|
|
}
|
|
return 0;
|
|
}
|