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/*
* ifstat - InterFace STATistics
* Copyright (c) 2001, Gal Roualland <gael.roualland@dial.oleane.com>
*
* This program 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.
*
* This program 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 this program; if not, write to the Free Software
* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*
* $Id: data.c,v 1.7 2003/02/07 00:10:37 gael Exp $
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#if STDC_HEADERS
#include <string.h>
#else
# ifndef HAVE_STRCHR
# define strchr index
# define strrchr rindex
# endif
char *strchr (), *strrchr ();
# ifndef HAVE_MEMCPY
# define memcpy(d, s, n) bcopy ((s), (d), (n))
# define memmove(d, s, n) bcopy ((s), (d), (n))
# endif
#endif
#ifdef HAVE_STDARG_H
#include <stdarg.h>
#endif
#ifdef HAVE_ERRNO_H
#include <errno.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include "ifstat.h"
const char *ifstat_version = VERSION;
int ifstat_quiet = 0;
char *ifstat_progname = "libifstat";
void _ifstat_error(char *format, ...) {
va_list ap;
fprintf(stderr, "%s: ", ifstat_progname);
va_start(ap, format);
vfprintf(stderr, format, ap);
va_end(ap);
putc('\n', stderr);
}
void (*ifstat_error) (char *format, ...) = &_ifstat_error;
void ifstat_perror(char *func) {
ifstat_error("%s: %s", func, strerror(errno));
}
void ifstat_add_interface(struct ifstat_list *ifs, char *ifname, int flags) {
struct ifstat_data *cur, *last;
int len;
/* check interface name */
if (*ifname == '\0')
return;
len = strlen(ifname);
last = NULL;
for (cur = ifs->first; cur != NULL; cur = cur->next) {
if (len == cur->namelen &&
cur->name[0] == ifname[0] &&
!strncmp(cur->name + 1, ifname + 1, len - 1) &&
!(flags & IFSTAT_TOTAL) && !(cur->flags & IFSTAT_TOTAL))
return;
last = cur;
}
if ((cur = calloc(1, sizeof(struct ifstat_data))) == NULL) {
ifstat_perror("malloc");
exit(EXIT_FAILURE);
}
cur->name = strdup(ifname);
cur->namelen = len;
cur->flags = flags;
if (last != NULL)
last->next = cur;
if (ifs->first == NULL)
ifs->first = cur;
}
void ifstat_free_interface(struct ifstat_data *data) {
free(data->name);
free(data);
}
void ifstat_set_interface_stats(struct ifstat_data *data,
unsigned long long bytesin,
unsigned long long bytesout) {
if (data->bout > bytesout || data->bin > bytesin) {
if (!ifstat_quiet)
ifstat_error("warning: rollover for interface %s, reinitialising.", data->name);
data->obout = bytesout;
data->obin = bytesin;
} else {
data->obout = data->bout;
data->obin = data->bin;
}
data->bout = bytesout;
data->bin = bytesin;
data->flags |= IFSTAT_HASSTATS;
}
void ifstat_set_interface_index(struct ifstat_data *data,
int index) {
data->index = index;
data->flags |= IFSTAT_HASINDEX;
}
struct ifstat_data *ifstat_get_interface(struct ifstat_list *ifs, char *ifname) {
struct ifstat_data *ptr;
int len = strlen(ifname);
for (ptr = ifs->first; ptr != NULL; ptr = ptr->next)
if (len == ptr->namelen &&
ptr->name[0] == ifname[0] &&
!strncmp(ptr->name + 1, ifname + 1, len - 1) &&
!(ptr->flags & IFSTAT_TOTAL))
return ptr;
return NULL;
}
void ifstat_reset_interfaces(struct ifstat_list *ifs) {
struct ifstat_data *ptr;
int hasindex = 1;
for (ptr = ifs->first; ptr != NULL; ptr = ptr->next) {
if (!(ptr->flags & IFSTAT_HASINDEX))
hasindex = 0;
ptr->flags &= ~(IFSTAT_HASSTATS|IFSTAT_HASINDEX);
}
if (hasindex)
ifs->flags |= IFSTAT_HASINDEX;
else
ifs->flags &= ~IFSTAT_HASINDEX;
}
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