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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