| 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 3 | * rtm_map.c
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| 4 | *
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| 5 | * This program is free software; you can redistribute it and/or
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| 6 | * modify it under the terms of the GNU General Public License
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| 7 | * as published by the Free Software Foundation; either version
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| 8 | * 2 of the License, or (at your option) any later version.
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| 9 | *
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| 10 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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| 11 | *
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| 12 | */
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| 13 |
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| 14 | #include "libbb.h"
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| 15 | #include "rt_names.h"
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| 16 | #include "utils.h"
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| 17 |
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| 18 | const char *rtnl_rtntype_n2a(int id, char *buf, int len)
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| 19 | {
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| 20 | switch (id) {
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| 21 | case RTN_UNSPEC:
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| 22 | return "none";
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| 23 | case RTN_UNICAST:
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| 24 | return "unicast";
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| 25 | case RTN_LOCAL:
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| 26 | return "local";
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| 27 | case RTN_BROADCAST:
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| 28 | return "broadcast";
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| 29 | case RTN_ANYCAST:
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| 30 | return "anycast";
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| 31 | case RTN_MULTICAST:
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| 32 | return "multicast";
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| 33 | case RTN_BLACKHOLE:
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| 34 | return "blackhole";
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| 35 | case RTN_UNREACHABLE:
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| 36 | return "unreachable";
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| 37 | case RTN_PROHIBIT:
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| 38 | return "prohibit";
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| 39 | case RTN_THROW:
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| 40 | return "throw";
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| 41 | case RTN_NAT:
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| 42 | return "nat";
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| 43 | case RTN_XRESOLVE:
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| 44 | return "xresolve";
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| 45 | default:
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| 46 | snprintf(buf, len, "%d", id);
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| 47 | return buf;
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| 48 | }
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| 49 | }
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| 50 |
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| 51 |
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| 52 | int rtnl_rtntype_a2n(int *id, char *arg)
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| 53 | {
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| 54 | static const char keywords[] ALIGN1 =
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| 55 | "local\0""nat\0""broadcast\0""brd\0""anycast\0"
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| 56 | "multicast\0""prohibit\0""unreachable\0""blackhole\0"
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| 57 | "xresolve\0""unicast\0""throw\0";
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| 58 | enum {
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| 59 | ARG_local = 1, ARG_nat, ARG_broadcast, ARG_brd, ARG_anycast,
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| 60 | ARG_multicast, ARG_prohibit, ARG_unreachable, ARG_blackhole,
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| 61 | ARG_xresolve, ARG_unicast, ARG_throw
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| 62 | };
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| 63 | const smalluint key = index_in_substrings(keywords, arg) + 1;
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| 64 | char *end;
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| 65 | unsigned long res;
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| 66 |
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| 67 | if (key == ARG_local)
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| 68 | res = RTN_LOCAL;
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| 69 | else if (key == ARG_nat)
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| 70 | res = RTN_NAT;
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| 71 | else if (key == ARG_broadcast || key == ARG_brd)
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| 72 | res = RTN_BROADCAST;
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| 73 | else if (key == ARG_anycast)
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| 74 | res = RTN_ANYCAST;
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| 75 | else if (key == ARG_multicast)
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| 76 | res = RTN_MULTICAST;
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| 77 | else if (key == ARG_prohibit)
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| 78 | res = RTN_PROHIBIT;
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| 79 | else if (key == ARG_unreachable)
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| 80 | res = RTN_UNREACHABLE;
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| 81 | else if (key == ARG_blackhole)
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| 82 | res = RTN_BLACKHOLE;
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| 83 | else if (key == ARG_xresolve)
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| 84 | res = RTN_XRESOLVE;
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| 85 | else if (key == ARG_unicast)
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| 86 | res = RTN_UNICAST;
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| 87 | else if (key == ARG_throw)
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| 88 | res = RTN_THROW;
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| 89 | else {
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| 90 | res = strtoul(arg, &end, 0);
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| 91 | if (!end || end == arg || *end || res > 255)
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| 92 | return -1;
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| 93 | }
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| 94 | *id = res;
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| 95 | return 0;
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| 96 | }
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| 97 |
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| 98 | int get_rt_realms(uint32_t *realms, char *arg)
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| 99 | {
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| 100 | uint32_t realm = 0;
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| 101 | char *p = strchr(arg, '/');
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| 102 |
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| 103 | *realms = 0;
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| 104 | if (p) {
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| 105 | *p = 0;
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| 106 | if (rtnl_rtrealm_a2n(realms, arg)) {
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| 107 | *p = '/';
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| 108 | return -1;
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| 109 | }
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| 110 | *realms <<= 16;
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| 111 | *p = '/';
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| 112 | arg = p+1;
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| 113 | }
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| 114 | if (*arg && rtnl_rtrealm_a2n(&realm, arg))
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| 115 | return -1;
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| 116 | *realms |= realm;
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| 117 | return 0;
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| 118 | }
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