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
  11#include "libbb.h"
  12#include "rt_names.h"
  13#include "utils.h"
  14
  15const char* FAST_FUNC rtnl_rtntype_n2a(int id, char *buf)
  16{
  17        switch (id) {
  18        case RTN_UNSPEC:
  19                return "none";
  20        case RTN_UNICAST:
  21                return "unicast";
  22        case RTN_LOCAL:
  23                return "local";
  24        case RTN_BROADCAST:
  25                return "broadcast";
  26        case RTN_ANYCAST:
  27                return "anycast";
  28        case RTN_MULTICAST:
  29                return "multicast";
  30        case RTN_BLACKHOLE:
  31                return "blackhole";
  32        case RTN_UNREACHABLE:
  33                return "unreachable";
  34        case RTN_PROHIBIT:
  35                return "prohibit";
  36        case RTN_THROW:
  37                return "throw";
  38        case RTN_NAT:
  39                return "nat";
  40        case RTN_XRESOLVE:
  41                return "xresolve";
  42        default:
  43                /* buf is SPRINT_BSIZE big */
  44                sprintf(buf, "%d", id);
  45                return buf;
  46        }
  47}
  48
  49
  50int FAST_FUNC rtnl_rtntype_a2n(int *id, char *arg)
  51{
  52        static const char keywords[] ALIGN1 =
  53                "local\0""nat\0""broadcast\0""brd\0""anycast\0"
  54                "multicast\0""prohibit\0""unreachable\0""blackhole\0"
  55                "xresolve\0""unicast\0""throw\0";
  56        enum {
  57                ARG_local = 1, ARG_nat, ARG_broadcast, ARG_brd, ARG_anycast,
  58                ARG_multicast, ARG_prohibit, ARG_unreachable, ARG_blackhole,
  59                ARG_xresolve, ARG_unicast, ARG_throw
  60        };
  61        const smalluint key = index_in_substrings(keywords, arg) + 1;
  62        char *end;
  63        unsigned long res;
  64
  65        if (key == ARG_local)
  66                res = RTN_LOCAL;
  67        else if (key == ARG_nat)
  68                res = RTN_NAT;
  69        else if (key == ARG_broadcast || key == ARG_brd)
  70                res = RTN_BROADCAST;
  71        else if (key == ARG_anycast)
  72                res = RTN_ANYCAST;
  73        else if (key == ARG_multicast)
  74                res = RTN_MULTICAST;
  75        else if (key == ARG_prohibit)
  76                res = RTN_PROHIBIT;
  77        else if (key == ARG_unreachable)
  78                res = RTN_UNREACHABLE;
  79        else if (key == ARG_blackhole)
  80                res = RTN_BLACKHOLE;
  81        else if (key == ARG_xresolve)
  82                res = RTN_XRESOLVE;
  83        else if (key == ARG_unicast)
  84                res = RTN_UNICAST;
  85        else if (key == ARG_throw)
  86                res = RTN_THROW;
  87        else {
  88                res = strtoul(arg, &end, 0);
  89                if (end == arg || *end || res > 255)
  90                        return -1;
  91        }
  92        *id = res;
  93        return 0;
  94}
  95
  96int FAST_FUNC get_rt_realms(uint32_t *realms, char *arg)
  97{
  98        uint32_t realm = 0;
  99        char *p = strchr(arg, '/');
 100
 101        *realms = 0;
 102        if (p) {
 103                *p = 0;
 104                if (rtnl_rtrealm_a2n(realms, arg)) {
 105                        *p = '/';
 106                        return -1;
 107                }
 108                *realms <<= 16;
 109                *p = '/';
 110                arg = p+1;
 111        }
 112        if (*arg && rtnl_rtrealm_a2n(&realm, arg))
 113                return -1;
 114        *realms |= realm;
 115        return 0;
 116}
 117