[1765] | 1 | /* vi: set sw=4 ts=4: */
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[821] | 2 | /*
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[2725] | 3 | * This program is free software; you can redistribute it and/or
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| 4 | * modify it under the terms of the GNU General Public License
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| 5 | * as published by the Free Software Foundation; either version
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| 6 | * 2 of the License, or (at your option) any later version.
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[821] | 7 | *
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[2725] | 8 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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[821] | 9 | */
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[1765] | 10 | #include "libbb.h"
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[821] | 11 | #include "rt_names.h"
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| 12 |
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[3621] | 13 | #define CONFDIR CONFIG_FEATURE_IP_ROUTE_DIR
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| 14 |
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[2725] | 15 | typedef struct rtnl_tab_t {
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| 16 | const char *cached_str;
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| 17 | unsigned cached_result;
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[3621] | 18 | /* upstream version switched to a hash table and removed
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| 19 | * id < 256 limit. For now bbox bumps this array size from 256
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| 20 | * to 1024. If you plan to change this to a hash table,
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| 21 | * consider merging several hash tables we have (for example,
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| 22 | * awk has resizable one!
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| 23 | */
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| 24 | #define RT_TABLE_MAX 1023
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| 25 | const char *tab[RT_TABLE_MAX+1];
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[2725] | 26 | } rtnl_tab_t;
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| 27 |
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| 28 | static void rtnl_tab_initialize(const char *file, const char **tab)
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[821] | 29 | {
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[2725] | 30 | char *token[2];
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[3621] | 31 | char fullname[sizeof(CONFDIR"/rt_dsfield") + 8];
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| 32 | parser_t *parser;
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[821] | 33 |
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[3621] | 34 | sprintf(fullname, CONFDIR"/rt_%s", file);
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| 35 | parser = config_open2(fullname, fopen_for_read);
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[2725] | 36 | while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL)) {
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| 37 | unsigned id = bb_strtou(token[0], NULL, 0);
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[3621] | 38 | if (id > RT_TABLE_MAX) {
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[2725] | 39 | bb_error_msg("database %s is corrupted at line %d",
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| 40 | file, parser->lineno);
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| 41 | break;
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| 42 | }
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| 43 | tab[id] = xstrdup(token[1]);
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| 44 | }
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| 45 | config_close(parser);
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| 46 | }
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[821] | 47 |
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[2725] | 48 | static int rtnl_a2n(rtnl_tab_t *tab, uint32_t *id, const char *arg, int base)
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| 49 | {
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| 50 | unsigned i;
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| 51 |
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| 52 | if (tab->cached_str && strcmp(tab->cached_str, arg) == 0) {
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| 53 | *id = tab->cached_result;
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| 54 | return 0;
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| 55 | }
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| 56 |
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[3621] | 57 | for (i = 0; i <= RT_TABLE_MAX; i++) {
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[2725] | 58 | if (tab->tab[i]
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| 59 | && strcmp(tab->tab[i], arg) == 0
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[1765] | 60 | ) {
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[2725] | 61 | tab->cached_str = tab->tab[i];
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| 62 | tab->cached_result = i;
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| 63 | *id = i;
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| 64 | return 0;
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[821] | 65 | }
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[2725] | 66 | }
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[821] | 67 |
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[2725] | 68 | i = bb_strtou(arg, NULL, base);
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[3621] | 69 | if (i > RT_TABLE_MAX)
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[2725] | 70 | return -1;
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| 71 | *id = i;
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| 72 | return 0;
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[821] | 73 | }
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| 74 |
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| 75 |
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[2725] | 76 | static rtnl_tab_t *rtnl_rtprot_tab;
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[821] | 77 |
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| 78 | static void rtnl_rtprot_initialize(void)
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| 79 | {
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[1765] | 80 | static const char *const init_tab[] = {
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| 81 | "none",
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| 82 | "redirect",
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| 83 | "kernel",
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| 84 | "boot",
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| 85 | "static",
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| 86 | NULL,
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| 87 | NULL,
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| 88 | NULL,
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| 89 | "gated",
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| 90 | "ra",
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| 91 | "mrt",
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| 92 | "zebra",
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| 93 | "bird",
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| 94 | };
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[2725] | 95 |
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| 96 | if (rtnl_rtprot_tab)
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| 97 | return;
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| 98 | rtnl_rtprot_tab = xzalloc(sizeof(*rtnl_rtprot_tab));
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| 99 | memcpy(rtnl_rtprot_tab->tab, init_tab, sizeof(init_tab));
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[3621] | 100 | rtnl_tab_initialize("protos", rtnl_rtprot_tab->tab);
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[821] | 101 | }
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| 102 |
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[3621] | 103 | #if 0 /* UNUSED */
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| 104 | const char* FAST_FUNC rtnl_rtprot_n2a(int id)
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[821] | 105 | {
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[3621] | 106 | if (id < 0 || id > RT_TABLE_MAX) {
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| 107 | return itoa(id);
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[821] | 108 | }
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[1765] | 109 |
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| 110 | rtnl_rtprot_initialize();
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| 111 |
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[2725] | 112 | if (rtnl_rtprot_tab->tab[id])
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| 113 | return rtnl_rtprot_tab->tab[id];
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[3621] | 114 | return itoa(id);
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[821] | 115 | }
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[3621] | 116 | #endif
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[821] | 117 |
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[2725] | 118 | int FAST_FUNC rtnl_rtprot_a2n(uint32_t *id, char *arg)
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[821] | 119 | {
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[1765] | 120 | rtnl_rtprot_initialize();
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[2725] | 121 | return rtnl_a2n(rtnl_rtprot_tab, id, arg, 0);
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[821] | 122 | }
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| 123 |
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| 124 |
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[2725] | 125 | static rtnl_tab_t *rtnl_rtscope_tab;
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[821] | 126 |
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| 127 | static void rtnl_rtscope_initialize(void)
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| 128 | {
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[2725] | 129 | if (rtnl_rtscope_tab)
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| 130 | return;
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| 131 | rtnl_rtscope_tab = xzalloc(sizeof(*rtnl_rtscope_tab));
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| 132 | rtnl_rtscope_tab->tab[0] = "global";
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| 133 | rtnl_rtscope_tab->tab[255] = "nowhere";
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| 134 | rtnl_rtscope_tab->tab[254] = "host";
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| 135 | rtnl_rtscope_tab->tab[253] = "link";
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| 136 | rtnl_rtscope_tab->tab[200] = "site";
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[3621] | 137 | rtnl_tab_initialize("scopes", rtnl_rtscope_tab->tab);
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[821] | 138 | }
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| 139 |
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[3621] | 140 | const char* FAST_FUNC rtnl_rtscope_n2a(int id)
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[821] | 141 | {
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[3621] | 142 | if (id < 0 || id > RT_TABLE_MAX) {
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| 143 | return itoa(id);
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[821] | 144 | }
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[1765] | 145 |
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| 146 | rtnl_rtscope_initialize();
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| 147 |
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[2725] | 148 | if (rtnl_rtscope_tab->tab[id])
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| 149 | return rtnl_rtscope_tab->tab[id];
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[3621] | 150 | return itoa(id);
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[821] | 151 | }
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| 152 |
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[2725] | 153 | int FAST_FUNC rtnl_rtscope_a2n(uint32_t *id, char *arg)
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[821] | 154 | {
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[1765] | 155 | rtnl_rtscope_initialize();
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[2725] | 156 | return rtnl_a2n(rtnl_rtscope_tab, id, arg, 0);
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[821] | 157 | }
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| 158 |
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| 159 |
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[2725] | 160 | static rtnl_tab_t *rtnl_rtrealm_tab;
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[821] | 161 |
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| 162 | static void rtnl_rtrealm_initialize(void)
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| 163 | {
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[1765] | 164 | if (rtnl_rtrealm_tab) return;
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[2725] | 165 | rtnl_rtrealm_tab = xzalloc(sizeof(*rtnl_rtrealm_tab));
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| 166 | rtnl_rtrealm_tab->tab[0] = "unknown";
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[3621] | 167 | rtnl_tab_initialize("realms", rtnl_rtrealm_tab->tab);
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[821] | 168 | }
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| 169 |
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[2725] | 170 | int FAST_FUNC rtnl_rtrealm_a2n(uint32_t *id, char *arg)
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[821] | 171 | {
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[1765] | 172 | rtnl_rtrealm_initialize();
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[2725] | 173 | return rtnl_a2n(rtnl_rtrealm_tab, id, arg, 0);
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[821] | 174 | }
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| 175 |
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[1765] | 176 | #if ENABLE_FEATURE_IP_RULE
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[3621] | 177 | const char* FAST_FUNC rtnl_rtrealm_n2a(int id)
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[1765] | 178 | {
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[3621] | 179 | if (id < 0 || id > RT_TABLE_MAX) {
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| 180 | return itoa(id);
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[1765] | 181 | }
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[821] | 182 |
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[1765] | 183 | rtnl_rtrealm_initialize();
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[821] | 184 |
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[2725] | 185 | if (rtnl_rtrealm_tab->tab[id])
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| 186 | return rtnl_rtrealm_tab->tab[id];
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[3621] | 187 | return itoa(id);
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[1765] | 188 | }
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| 189 | #endif
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[821] | 190 |
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| 191 |
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[2725] | 192 | static rtnl_tab_t *rtnl_rtdsfield_tab;
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[1765] | 193 |
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[821] | 194 | static void rtnl_rtdsfield_initialize(void)
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| 195 | {
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[1765] | 196 | if (rtnl_rtdsfield_tab) return;
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[2725] | 197 | rtnl_rtdsfield_tab = xzalloc(sizeof(*rtnl_rtdsfield_tab));
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| 198 | rtnl_rtdsfield_tab->tab[0] = "0";
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[3621] | 199 | rtnl_tab_initialize("dsfield", rtnl_rtdsfield_tab->tab);
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[821] | 200 | }
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| 201 |
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[3621] | 202 | const char* FAST_FUNC rtnl_dsfield_n2a(int id)
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[821] | 203 | {
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[3621] | 204 | if (id < 0 || id > RT_TABLE_MAX) {
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| 205 | return itoa(id);
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[821] | 206 | }
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[1765] | 207 |
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| 208 | rtnl_rtdsfield_initialize();
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| 209 |
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[2725] | 210 | if (rtnl_rtdsfield_tab->tab[id])
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| 211 | return rtnl_rtdsfield_tab->tab[id];
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[3621] | 212 | return itoa(id);
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[821] | 213 | }
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| 214 |
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[2725] | 215 | int FAST_FUNC rtnl_dsfield_a2n(uint32_t *id, char *arg)
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[821] | 216 | {
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[1765] | 217 | rtnl_rtdsfield_initialize();
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[2725] | 218 | return rtnl_a2n(rtnl_rtdsfield_tab, id, arg, 16);
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[821] | 219 | }
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| 220 |
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[1765] | 221 |
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| 222 | #if ENABLE_FEATURE_IP_RULE
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[2725] | 223 | static rtnl_tab_t *rtnl_rttable_tab;
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[1765] | 224 |
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| 225 | static void rtnl_rttable_initialize(void)
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| 226 | {
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[3621] | 227 | if (rtnl_rttable_tab)
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| 228 | return;
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| 229 |
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[2725] | 230 | rtnl_rttable_tab = xzalloc(sizeof(*rtnl_rttable_tab));
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| 231 | rtnl_rttable_tab->tab[0] = "unspec";
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| 232 | rtnl_rttable_tab->tab[255] = "local";
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| 233 | rtnl_rttable_tab->tab[254] = "main";
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| 234 | rtnl_rttable_tab->tab[253] = "default";
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[3621] | 235 | rtnl_tab_initialize("tables", rtnl_rttable_tab->tab);
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[1765] | 236 | }
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| 237 |
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[3621] | 238 | const char* FAST_FUNC rtnl_rttable_n2a(int id)
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[1765] | 239 | {
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[3621] | 240 | if (id < 0 || id > RT_TABLE_MAX) {
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| 241 | return itoa(id);
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[1765] | 242 | }
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| 243 |
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| 244 | rtnl_rttable_initialize();
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| 245 |
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[2725] | 246 | if (rtnl_rttable_tab->tab[id])
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| 247 | return rtnl_rttable_tab->tab[id];
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[3621] | 248 | return itoa(id);
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[1765] | 249 | }
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| 250 |
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[2725] | 251 | int FAST_FUNC rtnl_rttable_a2n(uint32_t *id, char *arg)
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[1765] | 252 | {
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| 253 | rtnl_rttable_initialize();
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[2725] | 254 | return rtnl_a2n(rtnl_rttable_tab, id, arg, 0);
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[1765] | 255 | }
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| 256 |
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| 257 | #endif
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