LXR busybox/networking/libiproute/rtm

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