4323ac861e
text data bss dec hex filename 1020826 559 5052 1026437 fa985 busybox_old 1020815 559 5052 1026426 fa97a busybox_unstripped Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
126 lines
3.2 KiB
C
126 lines
3.2 KiB
C
/* vi: set sw=4 ts=4: */
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/*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*
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* Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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*/
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#include "libbb.h"
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#include "rt_names.h"
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#include "utils.h"
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static const char keywords[] ALIGN1 =
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"local\0""nat\0""broadcast\0""brd\0""anycast\0"
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"multicast\0""prohibit\0""unreachable\0""blackhole\0"
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"xresolve\0""unicast\0""throw\0";
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enum {
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ARG_local = 1, ARG_nat, ARG_broadcast, ARG_brd, ARG_anycast,
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ARG_multicast, ARG_prohibit, ARG_unreachable, ARG_blackhole,
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ARG_xresolve, ARG_unicast, ARG_throw
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};
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#define str_local keywords
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#define str_nat (str_local + sizeof("local"))
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#define str_broadcast (str_nat + sizeof("nat"))
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#define str_brd (str_broadcast + sizeof("broadcast"))
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#define str_anycast (str_brd + sizeof("brd"))
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#define str_multicast (str_anycast + sizeof("anycast"))
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#define str_prohibit (str_multicast + sizeof("multicast"))
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#define str_unreachable (str_prohibit + sizeof("prohibit"))
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#define str_blackhole (str_unreachable + sizeof("unreachable"))
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#define str_xresolve (str_blackhole + sizeof("blackhole"))
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#define str_unicast (str_xresolve + sizeof("xresolve"))
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#define str_throw (str_unicast + sizeof("unicast"))
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const char* FAST_FUNC rtnl_rtntype_n2a(int id)
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{
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switch (id) {
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case RTN_UNSPEC:
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return "none";
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case RTN_UNICAST:
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return str_unicast;
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case RTN_LOCAL:
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return str_local;
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case RTN_BROADCAST:
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return str_broadcast;
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case RTN_ANYCAST:
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return str_anycast;
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case RTN_MULTICAST:
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return str_multicast;
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case RTN_BLACKHOLE:
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return str_blackhole;
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case RTN_UNREACHABLE:
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return str_unreachable;
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case RTN_PROHIBIT:
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return str_prohibit;
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case RTN_THROW:
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return str_throw;
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case RTN_NAT:
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return str_nat;
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case RTN_XRESOLVE:
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return str_xresolve;
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default:
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return itoa(id);
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}
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}
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int FAST_FUNC rtnl_rtntype_a2n(int *id, char *arg)
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{
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const smalluint key = index_in_substrings(keywords, arg) + 1;
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char *end;
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unsigned long res;
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if (key == ARG_local)
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res = RTN_LOCAL;
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else if (key == ARG_nat)
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res = RTN_NAT;
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else if (key == ARG_broadcast || key == ARG_brd)
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res = RTN_BROADCAST;
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else if (key == ARG_anycast)
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res = RTN_ANYCAST;
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else if (key == ARG_multicast)
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res = RTN_MULTICAST;
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else if (key == ARG_prohibit)
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res = RTN_PROHIBIT;
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else if (key == ARG_unreachable)
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res = RTN_UNREACHABLE;
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else if (key == ARG_blackhole)
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res = RTN_BLACKHOLE;
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else if (key == ARG_xresolve)
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res = RTN_XRESOLVE;
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else if (key == ARG_unicast)
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res = RTN_UNICAST;
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else if (key == ARG_throw)
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res = RTN_THROW;
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else {
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res = strtoul(arg, &end, 0);
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if (end == arg || *end || res > 255)
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return -1;
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}
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*id = res;
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return 0;
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}
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int FAST_FUNC get_rt_realms(uint32_t *realms, char *arg)
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{
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uint32_t realm = 0;
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char *p = strchr(arg, '/');
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*realms = 0;
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if (p) {
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*p = 0;
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if (rtnl_rtrealm_a2n(realms, arg)) {
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*p = '/';
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return -1;
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}
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*realms <<= 16;
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*p = '/';
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arg = p+1;
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}
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if (*arg && rtnl_rtrealm_a2n(&realm, arg))
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return -1;
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*realms |= realm;
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return 0;
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}
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