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/* vi: set sw=4 ts=4: */
/*
* 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.
*
* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
*/
#include "libbb.h"
#include "rt_names.h"
#include "utils.h"
static const char keywords[] ALIGN1 =
"local\0""nat\0""broadcast\0""brd\0""anycast\0"
"multicast\0""prohibit\0""unreachable\0""blackhole\0"
"xresolve\0""unicast\0""throw\0";
enum {
ARG_local = 1, ARG_nat, ARG_broadcast, ARG_brd, ARG_anycast,
ARG_multicast, ARG_prohibit, ARG_unreachable, ARG_blackhole,
ARG_xresolve, ARG_unicast, ARG_throw
};
#define str_local keywords
#define str_nat (str_local + sizeof("local"))
#define str_broadcast (str_nat + sizeof("nat"))
#define str_brd (str_broadcast + sizeof("broadcast"))
#define str_anycast (str_brd + sizeof("brd"))
#define str_multicast (str_anycast + sizeof("anycast"))
#define str_prohibit (str_multicast + sizeof("multicast"))
#define str_unreachable (str_prohibit + sizeof("prohibit"))
#define str_blackhole (str_unreachable + sizeof("unreachable"))
#define str_xresolve (str_blackhole + sizeof("blackhole"))
#define str_unicast (str_xresolve + sizeof("xresolve"))
#define str_throw (str_unicast + sizeof("unicast"))
const char* FAST_FUNC rtnl_rtntype_n2a(int id)
{
switch (id) {
case RTN_UNSPEC:
return "none";
case RTN_UNICAST:
return str_unicast;
case RTN_LOCAL:
return str_local;
case RTN_BROADCAST:
return str_broadcast;
case RTN_ANYCAST:
return str_anycast;
case RTN_MULTICAST:
return str_multicast;
case RTN_BLACKHOLE:
return str_blackhole;
case RTN_UNREACHABLE:
return str_unreachable;
case RTN_PROHIBIT:
return str_prohibit;
case RTN_THROW:
return str_throw;
case RTN_NAT:
return str_nat;
case RTN_XRESOLVE:
return str_xresolve;
default:
return itoa(id);
}
}
int FAST_FUNC rtnl_rtntype_a2n(int *id, char *arg)
{
const smalluint key = index_in_substrings(keywords, arg) + 1;
char *end;
unsigned long res;
if (key == ARG_local)
res = RTN_LOCAL;
else if (key == ARG_nat)
res = RTN_NAT;
else if (key == ARG_broadcast || key == ARG_brd)
res = RTN_BROADCAST;
else if (key == ARG_anycast)
res = RTN_ANYCAST;
else if (key == ARG_multicast)
res = RTN_MULTICAST;
else if (key == ARG_prohibit)
res = RTN_PROHIBIT;
else if (key == ARG_unreachable)
res = RTN_UNREACHABLE;
else if (key == ARG_blackhole)
res = RTN_BLACKHOLE;
else if (key == ARG_xresolve)
res = RTN_XRESOLVE;
else if (key == ARG_unicast)
res = RTN_UNICAST;
else if (key == ARG_throw)
res = RTN_THROW;
else {
res = strtoul(arg, &end, 0);
if (end == arg || *end || res > 255)
return -1;
}
*id = res;
return 0;
}
int FAST_FUNC get_rt_realms(uint32_t *realms, char *arg)
{
uint32_t realm = 0;
char *p = strchr(arg, '/');
*realms = 0;
if (p) {
*p = 0;
if (rtnl_rtrealm_a2n(realms, arg)) {
*p = '/';
return -1;
}
*realms <<= 16;
*p = '/';
arg = p+1;
}
if (*arg && rtnl_rtrealm_a2n(&realm, arg))
return -1;
*realms |= realm;
return 0;
}
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