[3320] | 1 | /* vi: set sw=4 ts=4: */
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| 2 | /*
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| 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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| 7 | *
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| 8 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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| 9 | */
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| 10 | #include "libbb.h"
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| 11 | #include "rt_names.h"
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| 12 |
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| 13 | typedef struct rtnl_tab_t {
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| 14 | const char *cached_str;
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| 15 | unsigned cached_result;
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| 16 | const char *tab[256];
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| 17 | } rtnl_tab_t;
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| 18 |
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| 19 | static void rtnl_tab_initialize(const char *file, const char **tab)
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| 20 | {
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| 21 | char *token[2];
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| 22 | parser_t *parser = config_open2(file, fopen_for_read);
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| 23 |
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| 24 | while (config_read(parser, token, 2, 2, "# \t", PARSE_NORMAL)) {
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| 25 | unsigned id = bb_strtou(token[0], NULL, 0);
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| 26 | if (id > 256) {
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| 27 | bb_error_msg("database %s is corrupted at line %d",
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| 28 | file, parser->lineno);
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| 29 | break;
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| 30 | }
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| 31 | tab[id] = xstrdup(token[1]);
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| 32 | }
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| 33 | config_close(parser);
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| 34 | }
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| 35 |
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| 36 | static int rtnl_a2n(rtnl_tab_t *tab, uint32_t *id, const char *arg, int base)
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| 37 | {
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| 38 | unsigned i;
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| 39 |
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| 40 | if (tab->cached_str && strcmp(tab->cached_str, arg) == 0) {
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| 41 | *id = tab->cached_result;
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| 42 | return 0;
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| 43 | }
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| 44 |
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| 45 | for (i = 0; i < 256; i++) {
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| 46 | if (tab->tab[i]
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| 47 | && strcmp(tab->tab[i], arg) == 0
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| 48 | ) {
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| 49 | tab->cached_str = tab->tab[i];
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| 50 | tab->cached_result = i;
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| 51 | *id = i;
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| 52 | return 0;
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| 53 | }
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| 54 | }
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| 55 |
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| 56 | i = bb_strtou(arg, NULL, base);
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| 57 | if (i > 255)
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| 58 | return -1;
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| 59 | *id = i;
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| 60 | return 0;
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| 61 | }
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| 62 |
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| 63 |
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| 64 | static rtnl_tab_t *rtnl_rtprot_tab;
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| 65 |
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| 66 | static void rtnl_rtprot_initialize(void)
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| 67 | {
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| 68 | static const char *const init_tab[] = {
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| 69 | "none",
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| 70 | "redirect",
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| 71 | "kernel",
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| 72 | "boot",
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| 73 | "static",
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| 74 | NULL,
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| 75 | NULL,
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| 76 | NULL,
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| 77 | "gated",
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| 78 | "ra",
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| 79 | "mrt",
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| 80 | "zebra",
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| 81 | "bird",
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| 82 | };
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| 83 |
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| 84 | if (rtnl_rtprot_tab)
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| 85 | return;
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| 86 | rtnl_rtprot_tab = xzalloc(sizeof(*rtnl_rtprot_tab));
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| 87 | memcpy(rtnl_rtprot_tab->tab, init_tab, sizeof(init_tab));
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| 88 | rtnl_tab_initialize("/etc/iproute2/rt_protos", rtnl_rtprot_tab->tab);
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| 89 | }
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| 90 |
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| 91 | const char* FAST_FUNC rtnl_rtprot_n2a(int id, char *buf)
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| 92 | {
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| 93 | if (id < 0 || id >= 256) {
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| 94 | sprintf(buf, "%d", id);
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| 95 | return buf;
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| 96 | }
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| 97 |
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| 98 | rtnl_rtprot_initialize();
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| 99 |
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| 100 | if (rtnl_rtprot_tab->tab[id])
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| 101 | return rtnl_rtprot_tab->tab[id];
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| 102 | /* buf is SPRINT_BSIZE big */
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| 103 | sprintf(buf, "%d", id);
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| 104 | return buf;
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| 105 | }
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| 106 |
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| 107 | int FAST_FUNC rtnl_rtprot_a2n(uint32_t *id, char *arg)
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| 108 | {
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| 109 | rtnl_rtprot_initialize();
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| 110 | return rtnl_a2n(rtnl_rtprot_tab, id, arg, 0);
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| 111 | }
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| 112 |
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| 113 |
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| 114 | static rtnl_tab_t *rtnl_rtscope_tab;
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| 115 |
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| 116 | static void rtnl_rtscope_initialize(void)
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| 117 | {
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| 118 | if (rtnl_rtscope_tab)
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| 119 | return;
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| 120 | rtnl_rtscope_tab = xzalloc(sizeof(*rtnl_rtscope_tab));
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| 121 | rtnl_rtscope_tab->tab[0] = "global";
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| 122 | rtnl_rtscope_tab->tab[255] = "nowhere";
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| 123 | rtnl_rtscope_tab->tab[254] = "host";
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| 124 | rtnl_rtscope_tab->tab[253] = "link";
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| 125 | rtnl_rtscope_tab->tab[200] = "site";
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| 126 | rtnl_tab_initialize("/etc/iproute2/rt_scopes", rtnl_rtscope_tab->tab);
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| 127 | }
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| 128 |
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| 129 | const char* FAST_FUNC rtnl_rtscope_n2a(int id, char *buf)
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| 130 | {
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| 131 | if (id < 0 || id >= 256) {
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| 132 | sprintf(buf, "%d", id);
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| 133 | return buf;
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| 134 | }
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| 135 |
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| 136 | rtnl_rtscope_initialize();
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| 137 |
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| 138 | if (rtnl_rtscope_tab->tab[id])
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| 139 | return rtnl_rtscope_tab->tab[id];
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| 140 | /* buf is SPRINT_BSIZE big */
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| 141 | sprintf(buf, "%d", id);
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| 142 | return buf;
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| 143 | }
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| 144 |
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| 145 | int FAST_FUNC rtnl_rtscope_a2n(uint32_t *id, char *arg)
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| 146 | {
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| 147 | rtnl_rtscope_initialize();
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| 148 | return rtnl_a2n(rtnl_rtscope_tab, id, arg, 0);
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| 149 | }
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| 150 |
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| 151 |
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| 152 | static rtnl_tab_t *rtnl_rtrealm_tab;
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| 153 |
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| 154 | static void rtnl_rtrealm_initialize(void)
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| 155 | {
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| 156 | if (rtnl_rtrealm_tab) return;
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| 157 | rtnl_rtrealm_tab = xzalloc(sizeof(*rtnl_rtrealm_tab));
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| 158 | rtnl_rtrealm_tab->tab[0] = "unknown";
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| 159 | rtnl_tab_initialize("/etc/iproute2/rt_realms", rtnl_rtrealm_tab->tab);
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| 160 | }
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| 161 |
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| 162 | int FAST_FUNC rtnl_rtrealm_a2n(uint32_t *id, char *arg)
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| 163 | {
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| 164 | rtnl_rtrealm_initialize();
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| 165 | return rtnl_a2n(rtnl_rtrealm_tab, id, arg, 0);
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| 166 | }
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| 167 |
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| 168 | #if ENABLE_FEATURE_IP_RULE
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| 169 | const char* FAST_FUNC rtnl_rtrealm_n2a(int id, char *buf)
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| 170 | {
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| 171 | if (id < 0 || id >= 256) {
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| 172 | sprintf(buf, "%d", id);
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| 173 | return buf;
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| 174 | }
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| 175 |
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| 176 | rtnl_rtrealm_initialize();
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| 177 |
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| 178 | if (rtnl_rtrealm_tab->tab[id])
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| 179 | return rtnl_rtrealm_tab->tab[id];
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| 180 | /* buf is SPRINT_BSIZE big */
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| 181 | sprintf(buf, "%d", id);
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| 182 | return buf;
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| 183 | }
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| 184 | #endif
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| 185 |
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| 186 |
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| 187 | static rtnl_tab_t *rtnl_rtdsfield_tab;
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| 188 |
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| 189 | static void rtnl_rtdsfield_initialize(void)
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| 190 | {
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| 191 | if (rtnl_rtdsfield_tab) return;
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| 192 | rtnl_rtdsfield_tab = xzalloc(sizeof(*rtnl_rtdsfield_tab));
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| 193 | rtnl_rtdsfield_tab->tab[0] = "0";
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| 194 | rtnl_tab_initialize("/etc/iproute2/rt_dsfield", rtnl_rtdsfield_tab->tab);
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| 195 | }
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| 196 |
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| 197 | const char* FAST_FUNC rtnl_dsfield_n2a(int id, char *buf)
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| 198 | {
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| 199 | if (id < 0 || id >= 256) {
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| 200 | sprintf(buf, "%d", id);
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| 201 | return buf;
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| 202 | }
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| 203 |
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| 204 | rtnl_rtdsfield_initialize();
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| 205 |
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| 206 | if (rtnl_rtdsfield_tab->tab[id])
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| 207 | return rtnl_rtdsfield_tab->tab[id];
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| 208 | /* buf is SPRINT_BSIZE big */
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| 209 | sprintf(buf, "0x%02x", id);
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| 210 | return buf;
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| 211 | }
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| 212 |
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| 213 | int FAST_FUNC rtnl_dsfield_a2n(uint32_t *id, char *arg)
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| 214 | {
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| 215 | rtnl_rtdsfield_initialize();
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| 216 | return rtnl_a2n(rtnl_rtdsfield_tab, id, arg, 16);
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| 217 | }
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| 218 |
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| 219 |
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| 220 | #if ENABLE_FEATURE_IP_RULE
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| 221 | static rtnl_tab_t *rtnl_rttable_tab;
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| 222 |
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| 223 | static void rtnl_rttable_initialize(void)
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| 224 | {
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| 225 | if (rtnl_rtdsfield_tab) return;
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| 226 | rtnl_rttable_tab = xzalloc(sizeof(*rtnl_rttable_tab));
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| 227 | rtnl_rttable_tab->tab[0] = "unspec";
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| 228 | rtnl_rttable_tab->tab[255] = "local";
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| 229 | rtnl_rttable_tab->tab[254] = "main";
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| 230 | rtnl_rttable_tab->tab[253] = "default";
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| 231 | rtnl_tab_initialize("/etc/iproute2/rt_tables", rtnl_rttable_tab->tab);
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| 232 | }
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| 233 |
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| 234 | const char* FAST_FUNC rtnl_rttable_n2a(int id, char *buf)
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| 235 | {
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| 236 | if (id < 0 || id >= 256) {
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| 237 | sprintf(buf, "%d", id);
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| 238 | return buf;
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| 239 | }
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| 240 |
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| 241 | rtnl_rttable_initialize();
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| 242 |
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| 243 | if (rtnl_rttable_tab->tab[id])
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| 244 | return rtnl_rttable_tab->tab[id];
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| 245 | /* buf is SPRINT_BSIZE big */
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| 246 | sprintf(buf, "%d", id);
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| 247 | return buf;
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| 248 | }
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| 249 |
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| 250 | int FAST_FUNC rtnl_rttable_a2n(uint32_t *id, char *arg)
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| 251 | {
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| 252 | rtnl_rttable_initialize();
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| 253 | return rtnl_a2n(rtnl_rttable_tab, id, arg, 0);
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| 254 | }
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| 255 |
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| 256 | #endif
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