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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