|
Packit Service |
d1fe03 |
/*
|
|
Packit Service |
d1fe03 |
* getethertype.c
|
|
Packit Service |
d1fe03 |
*
|
|
Packit Service |
d1fe03 |
* This file was part of the NYS Library.
|
|
Packit Service |
d1fe03 |
*
|
|
Packit Service |
d1fe03 |
** The NYS Library is free software; you can redistribute it and/or
|
|
Packit Service |
d1fe03 |
** modify it under the terms of the GNU Library General Public License as
|
|
Packit Service |
d1fe03 |
** published by the Free Software Foundation; either version 2 of the
|
|
Packit Service |
d1fe03 |
** License, or (at your option) any later version.
|
|
Packit Service |
d1fe03 |
*
|
|
Packit Service |
d1fe03 |
* This program is free software; you can redistribute it and/or modify
|
|
Packit Service |
d1fe03 |
* it under the terms of the GNU General Public License as published by
|
|
Packit Service |
d1fe03 |
* the Free Software Foundation; either version 2 of the License, or
|
|
Packit Service |
d1fe03 |
* (at your option) any later version.
|
|
Packit Service |
d1fe03 |
*
|
|
Packit Service |
d1fe03 |
* This program is distributed in the hope that it will be useful,
|
|
Packit Service |
d1fe03 |
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
Packit Service |
d1fe03 |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
Packit Service |
d1fe03 |
* GNU General Public License for more details.
|
|
Packit Service |
d1fe03 |
*
|
|
Packit Service |
d1fe03 |
* You should have received a copy of the GNU General Public License
|
|
Packit Service |
d1fe03 |
* along with this program; if not, write to the Free Software
|
|
Packit Service |
d1fe03 |
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
|
|
Packit Service |
d1fe03 |
*/
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
/********************************************************************
|
|
Packit Service |
d1fe03 |
* Description: Ethertype name service switch and the ethertypes
|
|
Packit Service |
d1fe03 |
* database access functions
|
|
Packit Service |
d1fe03 |
* Author: Nick Fedchik <fnm@ukrsat.com>
|
|
Packit Service |
d1fe03 |
* Checker: Bart De Schuymer <bdschuym@pandora.be>
|
|
Packit Service |
d1fe03 |
* Origin: uClibc-0.9.16/libc/inet/getproto.c
|
|
Packit Service |
d1fe03 |
* Created at: Mon Nov 11 12:20:11 EET 2002
|
|
Packit Service |
d1fe03 |
********************************************************************/
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
#include <ctype.h>
|
|
Packit Service |
d1fe03 |
#include <features.h>
|
|
Packit Service |
d1fe03 |
#include <sys/types.h>
|
|
Packit Service |
d1fe03 |
#include <sys/socket.h>
|
|
Packit Service |
d1fe03 |
#include <netdb.h>
|
|
Packit Service |
d1fe03 |
#include <stdio.h>
|
|
Packit Service |
d1fe03 |
#include <stdlib.h>
|
|
Packit Service |
d1fe03 |
#include <string.h>
|
|
Packit Service |
d1fe03 |
#include <netinet/ether.h>
|
|
Packit Service |
d1fe03 |
#include <net/ethernet.h>
|
|
Packit Service |
d1fe03 |
#include <xtables.h>
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
#define MAXALIASES 35
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
static FILE *etherf = NULL;
|
|
Packit Service |
d1fe03 |
static char line[BUFSIZ + 1];
|
|
Packit Service |
d1fe03 |
static struct xt_ethertypeent et_ent;
|
|
Packit Service |
d1fe03 |
static char *ethertype_aliases[MAXALIASES];
|
|
Packit Service |
d1fe03 |
static int ethertype_stayopen;
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
static void setethertypeent(int f)
|
|
Packit Service |
d1fe03 |
{
|
|
Packit Service |
d1fe03 |
if (etherf == NULL)
|
|
Packit Service |
d1fe03 |
etherf = fopen(XT_PATH_ETHERTYPES, "r");
|
|
Packit Service |
d1fe03 |
else
|
|
Packit Service |
d1fe03 |
rewind(etherf);
|
|
Packit Service |
d1fe03 |
ethertype_stayopen |= f;
|
|
Packit Service |
d1fe03 |
}
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
static void endethertypeent(void)
|
|
Packit Service |
d1fe03 |
{
|
|
Packit Service |
d1fe03 |
if (etherf) {
|
|
Packit Service |
d1fe03 |
fclose(etherf);
|
|
Packit Service |
d1fe03 |
etherf = NULL;
|
|
Packit Service |
d1fe03 |
}
|
|
Packit Service |
d1fe03 |
ethertype_stayopen = 0;
|
|
Packit Service |
d1fe03 |
}
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
static struct xt_ethertypeent *getethertypeent(void)
|
|
Packit Service |
d1fe03 |
{
|
|
Packit Service |
d1fe03 |
char *e;
|
|
Packit Service |
d1fe03 |
char *endptr;
|
|
Packit Service |
d1fe03 |
register char *cp, **q;
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
if (etherf == NULL
|
|
Packit Service |
d1fe03 |
&& (etherf = fopen(XT_PATH_ETHERTYPES, "r")) == NULL) {
|
|
Packit Service |
d1fe03 |
return (NULL);
|
|
Packit Service |
d1fe03 |
}
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
again:
|
|
Packit Service |
d1fe03 |
if ((e = fgets(line, BUFSIZ, etherf)) == NULL) {
|
|
Packit Service |
d1fe03 |
return (NULL);
|
|
Packit Service |
d1fe03 |
}
|
|
Packit Service |
d1fe03 |
if (*e == '#')
|
|
Packit Service |
d1fe03 |
goto again;
|
|
Packit Service |
d1fe03 |
cp = strpbrk(e, "#\n");
|
|
Packit Service |
d1fe03 |
if (cp == NULL)
|
|
Packit Service |
d1fe03 |
goto again;
|
|
Packit Service |
d1fe03 |
*cp = '\0';
|
|
Packit Service |
d1fe03 |
et_ent.e_name = e;
|
|
Packit Service |
d1fe03 |
cp = strpbrk(e, " \t");
|
|
Packit Service |
d1fe03 |
if (cp == NULL)
|
|
Packit Service |
d1fe03 |
goto again;
|
|
Packit Service |
d1fe03 |
*cp++ = '\0';
|
|
Packit Service |
d1fe03 |
while (*cp == ' ' || *cp == '\t')
|
|
Packit Service |
d1fe03 |
cp++;
|
|
Packit Service |
d1fe03 |
e = strpbrk(cp, " \t");
|
|
Packit Service |
d1fe03 |
if (e != NULL)
|
|
Packit Service |
d1fe03 |
*e++ = '\0';
|
|
Packit Service |
d1fe03 |
// Check point
|
|
Packit Service |
d1fe03 |
et_ent.e_ethertype = strtol(cp, &endptr, 16);
|
|
Packit Service |
d1fe03 |
if (*endptr != '\0'
|
|
Packit Service |
d1fe03 |
|| (et_ent.e_ethertype < ETH_ZLEN
|
|
Packit Service |
d1fe03 |
|| et_ent.e_ethertype > 0xFFFF))
|
|
Packit Service |
d1fe03 |
goto again; // Skip invalid etherproto type entry
|
|
Packit Service |
d1fe03 |
q = et_ent.e_aliases = ethertype_aliases;
|
|
Packit Service |
d1fe03 |
if (e != NULL) {
|
|
Packit Service |
d1fe03 |
cp = e;
|
|
Packit Service |
d1fe03 |
while (cp && *cp) {
|
|
Packit Service |
d1fe03 |
if (*cp == ' ' || *cp == '\t') {
|
|
Packit Service |
d1fe03 |
cp++;
|
|
Packit Service |
d1fe03 |
continue;
|
|
Packit Service |
d1fe03 |
}
|
|
Packit Service |
d1fe03 |
if (q < ðertype_aliases[MAXALIASES - 1])
|
|
Packit Service |
d1fe03 |
*q++ = cp;
|
|
Packit Service |
d1fe03 |
cp = strpbrk(cp, " \t");
|
|
Packit Service |
d1fe03 |
if (cp != NULL)
|
|
Packit Service |
d1fe03 |
*cp++ = '\0';
|
|
Packit Service |
d1fe03 |
}
|
|
Packit Service |
d1fe03 |
}
|
|
Packit Service |
d1fe03 |
*q = NULL;
|
|
Packit Service |
d1fe03 |
return (&et_ent);
|
|
Packit Service |
d1fe03 |
}
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
struct xt_ethertypeent *xtables_getethertypebyname(const char *name)
|
|
Packit Service |
d1fe03 |
{
|
|
Packit Service |
d1fe03 |
register struct xt_ethertypeent *e;
|
|
Packit Service |
d1fe03 |
register char **cp;
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
setethertypeent(ethertype_stayopen);
|
|
Packit Service |
d1fe03 |
while ((e = getethertypeent()) != NULL) {
|
|
Packit Service |
d1fe03 |
if (strcasecmp(e->e_name, name) == 0)
|
|
Packit Service |
d1fe03 |
break;
|
|
Packit Service |
d1fe03 |
for (cp = e->e_aliases; *cp != 0; cp++)
|
|
Packit Service |
d1fe03 |
if (strcasecmp(*cp, name) == 0)
|
|
Packit Service |
d1fe03 |
goto found;
|
|
Packit Service |
d1fe03 |
}
|
|
Packit Service |
d1fe03 |
found:
|
|
Packit Service |
d1fe03 |
if (!ethertype_stayopen)
|
|
Packit Service |
d1fe03 |
endethertypeent();
|
|
Packit Service |
d1fe03 |
return (e);
|
|
Packit Service |
d1fe03 |
}
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
struct xt_ethertypeent *xtables_getethertypebynumber(int type)
|
|
Packit Service |
d1fe03 |
{
|
|
Packit Service |
d1fe03 |
register struct xt_ethertypeent *e;
|
|
Packit Service |
d1fe03 |
|
|
Packit Service |
d1fe03 |
setethertypeent(ethertype_stayopen);
|
|
Packit Service |
d1fe03 |
while ((e = getethertypeent()) != NULL)
|
|
Packit Service |
d1fe03 |
if (e->e_ethertype == type)
|
|
Packit Service |
d1fe03 |
break;
|
|
Packit Service |
d1fe03 |
if (!ethertype_stayopen)
|
|
Packit Service |
d1fe03 |
endethertypeent();
|
|
Packit Service |
d1fe03 |
return (e);
|
|
Packit Service |
d1fe03 |
}
|