113 lines
2.5 KiB
C
113 lines
2.5 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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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 "unicast";
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case RTN_LOCAL:
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return "local";
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case RTN_BROADCAST:
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return "broadcast";
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case RTN_ANYCAST:
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return "anycast";
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case RTN_MULTICAST:
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return "multicast";
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case RTN_BLACKHOLE:
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return "blackhole";
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case RTN_UNREACHABLE:
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return "unreachable";
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case RTN_PROHIBIT:
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return "prohibit";
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case RTN_THROW:
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return "throw";
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case RTN_NAT:
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return "nat";
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case RTN_XRESOLVE:
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return "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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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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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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