git.maemo.org Git - busybox4maemo/blob - networking/libiproute/rtm_map.c

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