[1770] | 1 | /* vi: set sw=4 ts=4: */
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[821] | 2 | /*
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| 3 | * rt_names.c rtnetlink names DB.
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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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[1770] | 13 | #include "libbb.h"
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[821] | 14 | #include "rt_names.h"
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| 15 |
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[1770] | 16 | static void rtnl_tab_initialize(const char *file, const char **tab, int size)
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[821] | 17 | {
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| 18 | char buf[512];
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| 19 | FILE *fp;
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| 20 |
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| 21 | fp = fopen(file, "r");
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| 22 | if (!fp)
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| 23 | return;
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| 24 | while (fgets(buf, sizeof(buf), fp)) {
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| 25 | char *p = buf;
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| 26 | int id;
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| 27 | char namebuf[512];
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| 28 |
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| 29 | while (*p == ' ' || *p == '\t')
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| 30 | p++;
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| 31 | if (*p == '#' || *p == '\n' || *p == 0)
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| 32 | continue;
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[1770] | 33 | if (sscanf(p, "0x%x %s\n", &id, namebuf) != 2
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| 34 | && sscanf(p, "0x%x %s #", &id, namebuf) != 2
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| 35 | && sscanf(p, "%d %s\n", &id, namebuf) != 2
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| 36 | && sscanf(p, "%d %s #", &id, namebuf) != 2
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| 37 | ) {
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| 38 | bb_error_msg("database %s is corrupted at %s",
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[821] | 39 | file, p);
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| 40 | return;
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| 41 | }
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| 42 |
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[1770] | 43 | if (id < 0 || id > size)
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[821] | 44 | continue;
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| 45 |
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[1770] | 46 | tab[id] = xstrdup(namebuf);
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[821] | 47 | }
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| 48 | fclose(fp);
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| 49 | }
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| 50 |
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| 51 |
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[1770] | 52 | static const char **rtnl_rtprot_tab; /* [256] */
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[821] | 53 |
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| 54 | static void rtnl_rtprot_initialize(void)
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| 55 | {
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[1770] | 56 | static const char *const init_tab[] = {
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| 57 | "none",
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| 58 | "redirect",
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| 59 | "kernel",
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| 60 | "boot",
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| 61 | "static",
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| 62 | NULL,
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| 63 | NULL,
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| 64 | NULL,
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| 65 | "gated",
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| 66 | "ra",
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| 67 | "mrt",
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| 68 | "zebra",
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| 69 | "bird",
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| 70 | };
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| 71 | if (rtnl_rtprot_tab) return;
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| 72 | rtnl_rtprot_tab = xzalloc(256 * sizeof(rtnl_rtprot_tab[0]));
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| 73 | memcpy(rtnl_rtprot_tab, init_tab, sizeof(init_tab));
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[821] | 74 | rtnl_tab_initialize("/etc/iproute2/rt_protos",
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| 75 | rtnl_rtprot_tab, 256);
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| 76 | }
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| 77 |
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[1770] | 78 |
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| 79 | const char* rtnl_rtprot_n2a(int id, char *buf, int len)
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[821] | 80 | {
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[1770] | 81 | if (id < 0 || id >= 256) {
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[821] | 82 | snprintf(buf, len, "%d", id);
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| 83 | return buf;
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| 84 | }
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[1770] | 85 |
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| 86 | rtnl_rtprot_initialize();
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| 87 |
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[821] | 88 | if (rtnl_rtprot_tab[id])
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| 89 | return rtnl_rtprot_tab[id];
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| 90 | snprintf(buf, len, "%d", id);
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| 91 | return buf;
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| 92 | }
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| 93 |
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| 94 | int rtnl_rtprot_a2n(uint32_t *id, char *arg)
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| 95 | {
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[1770] | 96 | static const char *cache = NULL;
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[821] | 97 | static unsigned long res;
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| 98 | int i;
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| 99 |
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| 100 | if (cache && strcmp(cache, arg) == 0) {
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| 101 | *id = res;
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| 102 | return 0;
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| 103 | }
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| 104 |
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[1770] | 105 | rtnl_rtprot_initialize();
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[821] | 106 |
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[1770] | 107 | for (i = 0; i < 256; i++) {
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[821] | 108 | if (rtnl_rtprot_tab[i] &&
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| 109 | strcmp(rtnl_rtprot_tab[i], arg) == 0) {
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| 110 | cache = rtnl_rtprot_tab[i];
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| 111 | res = i;
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| 112 | *id = res;
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| 113 | return 0;
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| 114 | }
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| 115 | }
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| 116 |
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[1770] | 117 | res = bb_strtoul(arg, NULL, 0);
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| 118 | if (errno || res > 255)
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[821] | 119 | return -1;
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| 120 | *id = res;
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| 121 | return 0;
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| 122 | }
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| 123 |
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| 124 |
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[1770] | 125 | static const char **rtnl_rtscope_tab; /* [256] */
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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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[1770] | 129 | if (rtnl_rtscope_tab) return;
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| 130 | rtnl_rtscope_tab = xzalloc(256 * sizeof(rtnl_rtscope_tab[0]));
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| 131 | rtnl_rtscope_tab[0] = "global";
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[821] | 132 | rtnl_rtscope_tab[255] = "nowhere";
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| 133 | rtnl_rtscope_tab[254] = "host";
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| 134 | rtnl_rtscope_tab[253] = "link";
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| 135 | rtnl_rtscope_tab[200] = "site";
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| 136 | rtnl_tab_initialize("/etc/iproute2/rt_scopes",
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| 137 | rtnl_rtscope_tab, 256);
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| 138 | }
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| 139 |
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[1770] | 140 |
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| 141 | const char* rtnl_rtscope_n2a(int id, char *buf, int len)
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[821] | 142 | {
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[1770] | 143 | if (id < 0 || id >= 256) {
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[821] | 144 | snprintf(buf, len, "%d", id);
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| 145 | return buf;
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| 146 | }
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[1770] | 147 |
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| 148 | rtnl_rtscope_initialize();
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| 149 |
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[821] | 150 | if (rtnl_rtscope_tab[id])
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| 151 | return rtnl_rtscope_tab[id];
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| 152 | snprintf(buf, len, "%d", id);
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| 153 | return buf;
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| 154 | }
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| 155 |
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| 156 | int rtnl_rtscope_a2n(uint32_t *id, char *arg)
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| 157 | {
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[1770] | 158 | static const char *cache = NULL;
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[821] | 159 | static unsigned long res;
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| 160 | int i;
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| 161 |
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| 162 | if (cache && strcmp(cache, arg) == 0) {
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| 163 | *id = res;
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| 164 | return 0;
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| 165 | }
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| 166 |
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[1770] | 167 | rtnl_rtscope_initialize();
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[821] | 168 |
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[1770] | 169 | for (i = 0; i < 256; i++) {
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[821] | 170 | if (rtnl_rtscope_tab[i] &&
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| 171 | strcmp(rtnl_rtscope_tab[i], arg) == 0) {
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| 172 | cache = rtnl_rtscope_tab[i];
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| 173 | res = i;
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| 174 | *id = res;
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| 175 | return 0;
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| 176 | }
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| 177 | }
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| 178 |
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[1770] | 179 | res = bb_strtoul(arg, NULL, 0);
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| 180 | if (errno || res > 255)
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[821] | 181 | return -1;
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| 182 | *id = res;
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| 183 | return 0;
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| 184 | }
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| 185 |
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| 186 |
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[1770] | 187 | static const char **rtnl_rtrealm_tab; /* [256] */
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[821] | 188 |
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| 189 | static void rtnl_rtrealm_initialize(void)
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| 190 | {
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[1770] | 191 | if (rtnl_rtrealm_tab) return;
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| 192 | rtnl_rtrealm_tab = xzalloc(256 * sizeof(rtnl_rtrealm_tab[0]));
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| 193 | rtnl_rtrealm_tab[0] = "unknown";
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[821] | 194 | rtnl_tab_initialize("/etc/iproute2/rt_realms",
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| 195 | rtnl_rtrealm_tab, 256);
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| 196 | }
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| 197 |
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[1770] | 198 |
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[821] | 199 | int rtnl_rtrealm_a2n(uint32_t *id, char *arg)
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| 200 | {
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[1770] | 201 | static const char *cache = NULL;
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[821] | 202 | static unsigned long res;
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| 203 | int i;
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| 204 |
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| 205 | if (cache && strcmp(cache, arg) == 0) {
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| 206 | *id = res;
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| 207 | return 0;
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| 208 | }
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| 209 |
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[1770] | 210 | rtnl_rtrealm_initialize();
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[821] | 211 |
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[1770] | 212 | for (i = 0; i < 256; i++) {
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[821] | 213 | if (rtnl_rtrealm_tab[i] &&
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| 214 | strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
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| 215 | cache = rtnl_rtrealm_tab[i];
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| 216 | res = i;
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| 217 | *id = res;
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| 218 | return 0;
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| 219 | }
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| 220 | }
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| 221 |
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[1770] | 222 | res = bb_strtoul(arg, NULL, 0);
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| 223 | if (errno || res > 255)
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[821] | 224 | return -1;
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| 225 | *id = res;
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| 226 | return 0;
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| 227 | }
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| 228 |
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[1770] | 229 | #if ENABLE_FEATURE_IP_RULE
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| 230 | const char* rtnl_rtrealm_n2a(int id, char *buf, int len)
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| 231 | {
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| 232 | if (id < 0 || id >= 256) {
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| 233 | snprintf(buf, len, "%d", id);
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| 234 | return buf;
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| 235 | }
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[821] | 236 |
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[1770] | 237 | rtnl_rtrealm_initialize();
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[821] | 238 |
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[1770] | 239 | if (rtnl_rtrealm_tab[id])
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| 240 | return rtnl_rtrealm_tab[id];
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| 241 | snprintf(buf, len, "%d", id);
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| 242 | return buf;
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| 243 | }
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| 244 | #endif
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[821] | 245 |
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| 246 |
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[1770] | 247 | static const char **rtnl_rtdsfield_tab; /* [256] */
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| 248 |
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[821] | 249 | static void rtnl_rtdsfield_initialize(void)
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| 250 | {
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[1770] | 251 | if (rtnl_rtdsfield_tab) return;
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| 252 | rtnl_rtdsfield_tab = xzalloc(256 * sizeof(rtnl_rtdsfield_tab[0]));
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| 253 | rtnl_rtdsfield_tab[0] = "0";
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[821] | 254 | rtnl_tab_initialize("/etc/iproute2/rt_dsfield",
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| 255 | rtnl_rtdsfield_tab, 256);
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| 256 | }
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| 257 |
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[1770] | 258 |
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[821] | 259 | const char * rtnl_dsfield_n2a(int id, char *buf, int len)
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| 260 | {
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[1770] | 261 | if (id < 0 || id >= 256) {
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[821] | 262 | snprintf(buf, len, "%d", id);
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| 263 | return buf;
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| 264 | }
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[1770] | 265 |
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| 266 | rtnl_rtdsfield_initialize();
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| 267 |
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[821] | 268 | if (rtnl_rtdsfield_tab[id])
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| 269 | return rtnl_rtdsfield_tab[id];
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| 270 | snprintf(buf, len, "0x%02x", id);
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| 271 | return buf;
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| 272 | }
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| 273 |
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| 274 |
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| 275 | int rtnl_dsfield_a2n(uint32_t *id, char *arg)
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| 276 | {
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[1770] | 277 | static const char *cache = NULL;
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[821] | 278 | static unsigned long res;
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| 279 | int i;
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| 280 |
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| 281 | if (cache && strcmp(cache, arg) == 0) {
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| 282 | *id = res;
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| 283 | return 0;
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| 284 | }
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| 285 |
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[1770] | 286 | rtnl_rtdsfield_initialize();
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[821] | 287 |
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[1770] | 288 | for (i = 0; i < 256; i++) {
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[821] | 289 | if (rtnl_rtdsfield_tab[i] &&
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| 290 | strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
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| 291 | cache = rtnl_rtdsfield_tab[i];
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| 292 | res = i;
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| 293 | *id = res;
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| 294 | return 0;
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| 295 | }
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| 296 | }
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| 297 |
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[1770] | 298 | res = bb_strtoul(arg, NULL, 16);
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| 299 | if (errno || res > 255)
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[821] | 300 | return -1;
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| 301 | *id = res;
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| 302 | return 0;
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| 303 | }
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| 304 |
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[1770] | 305 |
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| 306 | #if ENABLE_FEATURE_IP_RULE
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| 307 | static const char **rtnl_rttable_tab; /* [256] */
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| 308 |
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| 309 | static void rtnl_rttable_initialize(void)
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| 310 | {
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| 311 | if (rtnl_rtdsfield_tab) return;
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| 312 | rtnl_rttable_tab = xzalloc(256 * sizeof(rtnl_rttable_tab[0]));
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| 313 | rtnl_rttable_tab[0] = "unspec";
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| 314 | rtnl_rttable_tab[255] = "local";
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| 315 | rtnl_rttable_tab[254] = "main";
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| 316 | rtnl_rttable_tab[253] = "default";
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| 317 | rtnl_tab_initialize("/etc/iproute2/rt_tables", rtnl_rttable_tab, 256);
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| 318 | }
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| 319 |
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| 320 |
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| 321 | const char *rtnl_rttable_n2a(int id, char *buf, int len)
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| 322 | {
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| 323 | if (id < 0 || id >= 256) {
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| 324 | snprintf(buf, len, "%d", id);
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| 325 | return buf;
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| 326 | }
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| 327 |
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| 328 | rtnl_rttable_initialize();
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| 329 |
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| 330 | if (rtnl_rttable_tab[id])
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| 331 | return rtnl_rttable_tab[id];
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| 332 | snprintf(buf, len, "%d", id);
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| 333 | return buf;
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| 334 | }
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| 335 |
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| 336 | int rtnl_rttable_a2n(uint32_t * id, char *arg)
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| 337 | {
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| 338 | static char *cache = NULL;
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| 339 | static unsigned long res;
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| 340 | int i;
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| 341 |
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| 342 | if (cache && strcmp(cache, arg) == 0) {
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| 343 | *id = res;
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| 344 | return 0;
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| 345 | }
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| 346 |
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| 347 | rtnl_rttable_initialize();
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| 348 |
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| 349 | for (i = 0; i < 256; i++) {
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| 350 | if (rtnl_rttable_tab[i] && strcmp(rtnl_rttable_tab[i], arg) == 0) {
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| 351 | cache = (char*)rtnl_rttable_tab[i];
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| 352 | res = i;
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| 353 | *id = res;
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| 354 | return 0;
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| 355 | }
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| 356 | }
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| 357 |
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| 358 | i = bb_strtoul(arg, NULL, 0);
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| 359 | if (errno || i > 255)
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| 360 | return -1;
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| 361 | *id = i;
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| 362 | return 0;
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| 363 | }
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| 364 |
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| 365 | #endif
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