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 18const 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 52int 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 98int 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} 119