[821] | 1 | /*
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| 2 | * rt_names.c rtnetlink names DB.
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| 3 | *
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| 4 | * This program is free software; you can redistribute it and/or
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| 5 | * modify it under the terms of the GNU General Public License
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| 6 | * as published by the Free Software Foundation; either version
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| 7 | * 2 of the License, or (at your option) any later version.
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| 8 | *
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| 9 | * Authors: Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
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| 10 | */
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| 11 | #include <stdio.h>
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| 12 | #include <stdlib.h>
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| 13 | #include <string.h>
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| 14 |
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| 15 | #include <stdint.h>
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| 16 | #include "rt_names.h"
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| 17 |
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| 18 | static void rtnl_tab_initialize(char *file, char **tab, int size)
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| 19 | {
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| 20 | char buf[512];
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| 21 | FILE *fp;
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| 22 |
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| 23 | fp = fopen(file, "r");
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| 24 | if (!fp)
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| 25 | return;
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| 26 | while (fgets(buf, sizeof(buf), fp)) {
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| 27 | char *p = buf;
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| 28 | int id;
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| 29 | char namebuf[512];
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| 30 |
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| 31 | while (*p == ' ' || *p == '\t')
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| 32 | p++;
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| 33 | if (*p == '#' || *p == '\n' || *p == 0)
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| 34 | continue;
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| 35 | if (sscanf(p, "0x%x %s\n", &id, namebuf) != 2 &&
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| 36 | sscanf(p, "0x%x %s #", &id, namebuf) != 2 &&
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| 37 | sscanf(p, "%d %s\n", &id, namebuf) != 2 &&
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| 38 | sscanf(p, "%d %s #", &id, namebuf) != 2) {
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| 39 | fprintf(stderr, "Database %s is corrupted at %s\n",
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| 40 | file, p);
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| 41 | return;
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| 42 | }
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| 43 |
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| 44 | if (id<0 || id>size)
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| 45 | continue;
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| 46 |
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| 47 | tab[id] = strdup(namebuf);
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| 48 | }
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| 49 | fclose(fp);
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| 50 | }
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| 51 |
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| 52 |
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| 53 | static char * rtnl_rtprot_tab[256] = {
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| 54 | "none",
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| 55 | "redirect",
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| 56 | "kernel",
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| 57 | "boot",
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| 58 | "static",
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| 59 | NULL,
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| 60 | NULL,
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| 61 | NULL,
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| 62 | "gated",
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| 63 | "ra",
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| 64 | "mrt",
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| 65 | "zebra",
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| 66 | "bird",
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| 67 | };
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| 68 |
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| 69 |
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| 70 |
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| 71 | static int rtnl_rtprot_init;
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| 72 |
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| 73 | static void rtnl_rtprot_initialize(void)
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| 74 | {
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| 75 | rtnl_rtprot_init = 1;
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| 76 | rtnl_tab_initialize("/etc/iproute2/rt_protos",
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| 77 | rtnl_rtprot_tab, 256);
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| 78 | }
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| 79 |
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| 80 | const char * rtnl_rtprot_n2a(int id, char *buf, int len)
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| 81 | {
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| 82 | if (id<0 || id>=256) {
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| 83 | snprintf(buf, len, "%d", id);
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| 84 | return buf;
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| 85 | }
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| 86 | if (!rtnl_rtprot_tab[id]) {
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| 87 | if (!rtnl_rtprot_init)
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| 88 | rtnl_rtprot_initialize();
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| 89 | }
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| 90 | if (rtnl_rtprot_tab[id])
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| 91 | return rtnl_rtprot_tab[id];
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| 92 | snprintf(buf, len, "%d", id);
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| 93 | return buf;
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| 94 | }
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| 95 |
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| 96 | int rtnl_rtprot_a2n(uint32_t *id, char *arg)
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| 97 | {
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| 98 | static char *cache = NULL;
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| 99 | static unsigned long res;
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| 100 | char *end;
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| 101 | int i;
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| 102 |
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| 103 | if (cache && strcmp(cache, arg) == 0) {
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| 104 | *id = res;
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| 105 | return 0;
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| 106 | }
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| 107 |
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| 108 | if (!rtnl_rtprot_init)
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| 109 | rtnl_rtprot_initialize();
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| 110 |
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| 111 | for (i=0; i<256; i++) {
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| 112 | if (rtnl_rtprot_tab[i] &&
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| 113 | strcmp(rtnl_rtprot_tab[i], arg) == 0) {
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| 114 | cache = rtnl_rtprot_tab[i];
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| 115 | res = i;
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| 116 | *id = res;
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| 117 | return 0;
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| 118 | }
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| 119 | }
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| 120 |
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| 121 | res = strtoul(arg, &end, 0);
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| 122 | if (!end || end == arg || *end || res > 255)
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| 123 | return -1;
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| 124 | *id = res;
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| 125 | return 0;
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| 126 | }
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| 127 |
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| 128 |
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| 129 |
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| 130 | static char * rtnl_rtscope_tab[256] = {
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| 131 | "global",
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| 132 | };
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| 133 |
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| 134 | static int rtnl_rtscope_init;
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| 135 |
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| 136 | static void rtnl_rtscope_initialize(void)
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| 137 | {
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| 138 | rtnl_rtscope_init = 1;
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| 139 | rtnl_rtscope_tab[255] = "nowhere";
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| 140 | rtnl_rtscope_tab[254] = "host";
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| 141 | rtnl_rtscope_tab[253] = "link";
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| 142 | rtnl_rtscope_tab[200] = "site";
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| 143 | rtnl_tab_initialize("/etc/iproute2/rt_scopes",
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| 144 | rtnl_rtscope_tab, 256);
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| 145 | }
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| 146 |
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| 147 | const char * rtnl_rtscope_n2a(int id, char *buf, int len)
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| 148 | {
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| 149 | if (id<0 || id>=256) {
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| 150 | snprintf(buf, len, "%d", id);
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| 151 | return buf;
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| 152 | }
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| 153 | if (!rtnl_rtscope_tab[id]) {
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| 154 | if (!rtnl_rtscope_init)
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| 155 | rtnl_rtscope_initialize();
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| 156 | }
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| 157 | if (rtnl_rtscope_tab[id])
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| 158 | return rtnl_rtscope_tab[id];
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| 159 | snprintf(buf, len, "%d", id);
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| 160 | return buf;
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| 161 | }
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| 162 |
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| 163 | int rtnl_rtscope_a2n(uint32_t *id, char *arg)
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| 164 | {
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| 165 | static char *cache = NULL;
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| 166 | static unsigned long res;
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| 167 | char *end;
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| 168 | int i;
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| 169 |
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| 170 | if (cache && strcmp(cache, arg) == 0) {
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| 171 | *id = res;
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| 172 | return 0;
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| 173 | }
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| 174 |
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| 175 | if (!rtnl_rtscope_init)
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| 176 | rtnl_rtscope_initialize();
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| 177 |
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| 178 | for (i=0; i<256; i++) {
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| 179 | if (rtnl_rtscope_tab[i] &&
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| 180 | strcmp(rtnl_rtscope_tab[i], arg) == 0) {
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| 181 | cache = rtnl_rtscope_tab[i];
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| 182 | res = i;
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| 183 | *id = res;
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| 184 | return 0;
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| 185 | }
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| 186 | }
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| 187 |
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| 188 | res = strtoul(arg, &end, 0);
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| 189 | if (!end || end == arg || *end || res > 255)
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| 190 | return -1;
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| 191 | *id = res;
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| 192 | return 0;
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| 193 | }
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| 194 |
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| 195 |
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| 196 |
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| 197 | static char * rtnl_rtrealm_tab[256] = {
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| 198 | "unknown",
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| 199 | };
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| 200 |
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| 201 | static int rtnl_rtrealm_init;
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| 202 |
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| 203 | static void rtnl_rtrealm_initialize(void)
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| 204 | {
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| 205 | rtnl_rtrealm_init = 1;
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| 206 | rtnl_tab_initialize("/etc/iproute2/rt_realms",
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| 207 | rtnl_rtrealm_tab, 256);
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| 208 | }
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| 209 |
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| 210 | int rtnl_rtrealm_a2n(uint32_t *id, char *arg)
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| 211 | {
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| 212 | static char *cache = NULL;
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| 213 | static unsigned long res;
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| 214 | char *end;
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| 215 | int i;
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| 216 |
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| 217 | if (cache && strcmp(cache, arg) == 0) {
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| 218 | *id = res;
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| 219 | return 0;
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| 220 | }
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| 221 |
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| 222 | if (!rtnl_rtrealm_init)
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| 223 | rtnl_rtrealm_initialize();
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| 224 |
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| 225 | for (i=0; i<256; i++) {
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| 226 | if (rtnl_rtrealm_tab[i] &&
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| 227 | strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
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| 228 | cache = rtnl_rtrealm_tab[i];
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| 229 | res = i;
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| 230 | *id = res;
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| 231 | return 0;
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| 232 | }
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| 233 | }
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| 234 |
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| 235 | res = strtoul(arg, &end, 0);
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| 236 | if (!end || end == arg || *end || res > 255)
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| 237 | return -1;
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| 238 | *id = res;
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| 239 | return 0;
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| 240 | }
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| 241 |
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| 242 |
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| 243 |
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| 244 | static char * rtnl_rtdsfield_tab[256] = {
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| 245 | "0",
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| 246 | };
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| 247 |
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| 248 | static int rtnl_rtdsfield_init;
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| 249 |
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| 250 | static void rtnl_rtdsfield_initialize(void)
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| 251 | {
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| 252 | rtnl_rtdsfield_init = 1;
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| 253 | rtnl_tab_initialize("/etc/iproute2/rt_dsfield",
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| 254 | rtnl_rtdsfield_tab, 256);
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| 255 | }
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| 256 |
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| 257 | const char * rtnl_dsfield_n2a(int id, char *buf, int len)
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| 258 | {
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| 259 | if (id<0 || id>=256) {
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| 260 | snprintf(buf, len, "%d", id);
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| 261 | return buf;
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| 262 | }
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| 263 | if (!rtnl_rtdsfield_tab[id]) {
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| 264 | if (!rtnl_rtdsfield_init)
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| 265 | rtnl_rtdsfield_initialize();
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| 266 | }
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| 267 | if (rtnl_rtdsfield_tab[id])
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| 268 | return rtnl_rtdsfield_tab[id];
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| 269 | snprintf(buf, len, "0x%02x", id);
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| 270 | return buf;
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| 271 | }
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| 272 |
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| 273 |
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| 274 | int rtnl_dsfield_a2n(uint32_t *id, char *arg)
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| 275 | {
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| 276 | static char *cache = NULL;
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| 277 | static unsigned long res;
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| 278 | char *end;
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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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| 286 | if (!rtnl_rtdsfield_init)
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| 287 | rtnl_rtdsfield_initialize();
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| 288 |
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| 289 | for (i=0; i<256; i++) {
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| 290 | if (rtnl_rtdsfield_tab[i] &&
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| 291 | strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
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| 292 | cache = rtnl_rtdsfield_tab[i];
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| 293 | res = i;
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| 294 | *id = res;
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| 295 | return 0;
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| 296 | }
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| 297 | }
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| 298 |
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| 299 | res = strtoul(arg, &end, 16);
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| 300 | if (!end || end == arg || *end || res > 255)
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| 301 | return -1;
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| 302 | *id = res;
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| 303 | return 0;
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| 304 | }
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| 305 |
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