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[iproute2.git] / lib / rt_names.c
1 /*
2  * rt_names.c           rtnetlink names DB.
3  *
4  *              This program is free software; you can redistribute it and/or
5  *              modify it under the terms of the GNU General Public License
6  *              as published by the Free Software Foundation; either version
7  *              2 of the License, or (at your option) any later version.
8  *
9  * Authors:     Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
10  */
11
12 #include <stdio.h>
13 #include <stdlib.h>
14 #include <unistd.h>
15 #include <syslog.h>
16 #include <fcntl.h>
17 #include <string.h>
18 #include <sys/time.h>
19 #include <sys/socket.h>
20
21 #include <asm/types.h>
22 #include <linux/rtnetlink.h>
23
24 #include "rt_names.h"
25
26 static void rtnl_tab_initialize(char *file, char **tab, int size)
27 {
28         char buf[512];
29         FILE *fp;
30
31         fp = fopen(file, "r");
32         if (!fp)
33                 return;
34         while (fgets(buf, sizeof(buf), fp)) {
35                 char *p = buf;
36                 int id;
37                 char namebuf[512];
38
39                 while (*p == ' ' || *p == '\t')
40                         p++;
41                 if (*p == '#' || *p == '\n' || *p == 0)
42                         continue;
43                 if (sscanf(p, "0x%x %s\n", &id, namebuf) != 2 &&
44                     sscanf(p, "0x%x %s #", &id, namebuf) != 2 &&
45                     sscanf(p, "%d %s\n", &id, namebuf) != 2 &&
46                     sscanf(p, "%d %s #", &id, namebuf) != 2) {
47                         fprintf(stderr, "Database %s is corrupted at %s\n",
48                                 file, p);
49                         return;
50                 }
51
52                 if (id<0 || id>size)
53                         continue;
54
55                 tab[id] = strdup(namebuf);
56         }
57         fclose(fp);
58 }
59
60
61 static char * rtnl_rtprot_tab[256] = {
62         [RTPROT_UNSPEC] = "none",
63         [RTPROT_REDIRECT] ="redirect",
64         [RTPROT_KERNEL] = "kernel",
65         [RTPROT_BOOT] = "boot",
66         [RTPROT_STATIC] = "static",
67
68         [RTPROT_GATED] = "gated",
69         [RTPROT_RA] = "ra",
70         [RTPROT_MRT] =  "mrt",
71         [RTPROT_ZEBRA] ="zebra",
72         [RTPROT_BIRD] = "bird",
73         [RTPROT_DNROUTED] = "dnrouted",
74         [RTPROT_XORP] = "xorp",
75         [RTPROT_NTK] = "ntk",
76 };
77
78
79
80 static int rtnl_rtprot_init;
81
82 static void rtnl_rtprot_initialize(void)
83 {
84         rtnl_rtprot_init = 1;
85         rtnl_tab_initialize("/etc/iproute2/rt_protos",
86                             rtnl_rtprot_tab, 256);
87 }
88
89 char * rtnl_rtprot_n2a(int id, char *buf, int len)
90 {
91         if (id<0 || id>=256) {
92                 snprintf(buf, len, "%d", id);
93                 return buf;
94         }
95         if (!rtnl_rtprot_tab[id]) {
96                 if (!rtnl_rtprot_init)
97                         rtnl_rtprot_initialize();
98         }
99         if (rtnl_rtprot_tab[id])
100                 return rtnl_rtprot_tab[id];
101         snprintf(buf, len, "%d", id);
102         return buf;
103 }
104
105 int rtnl_rtprot_a2n(__u32 *id, char *arg)
106 {
107         static char *cache = NULL;
108         static unsigned long res;
109         char *end;
110         int i;
111
112         if (cache && strcmp(cache, arg) == 0) {
113                 *id = res;
114                 return 0;
115         }
116
117         if (!rtnl_rtprot_init)
118                 rtnl_rtprot_initialize();
119
120         for (i=0; i<256; i++) {
121                 if (rtnl_rtprot_tab[i] &&
122                     strcmp(rtnl_rtprot_tab[i], arg) == 0) {
123                         cache = rtnl_rtprot_tab[i];
124                         res = i;
125                         *id = res;
126                         return 0;
127                 }
128         }
129
130         res = strtoul(arg, &end, 0);
131         if (!end || end == arg || *end || res > 255)
132                 return -1;
133         *id = res;
134         return 0;
135 }
136
137
138
139 static char * rtnl_rtscope_tab[256] = {
140         "global",
141 };
142
143 static int rtnl_rtscope_init;
144
145 static void rtnl_rtscope_initialize(void)
146 {
147         rtnl_rtscope_init = 1;
148         rtnl_rtscope_tab[255] = "nowhere";
149         rtnl_rtscope_tab[254] = "host";
150         rtnl_rtscope_tab[253] = "link";
151         rtnl_rtscope_tab[200] = "site";
152         rtnl_tab_initialize("/etc/iproute2/rt_scopes",
153                             rtnl_rtscope_tab, 256);
154 }
155
156 char * rtnl_rtscope_n2a(int id, char *buf, int len)
157 {
158         if (id<0 || id>=256) {
159                 snprintf(buf, len, "%d", id);
160                 return buf;
161         }
162         if (!rtnl_rtscope_tab[id]) {
163                 if (!rtnl_rtscope_init)
164                         rtnl_rtscope_initialize();
165         }
166         if (rtnl_rtscope_tab[id])
167                 return rtnl_rtscope_tab[id];
168         snprintf(buf, len, "%d", id);
169         return buf;
170 }
171
172 int rtnl_rtscope_a2n(__u32 *id, char *arg)
173 {
174         static char *cache = NULL;
175         static unsigned long res;
176         char *end;
177         int i;
178
179         if (cache && strcmp(cache, arg) == 0) {
180                 *id = res;
181                 return 0;
182         }
183
184         if (!rtnl_rtscope_init)
185                 rtnl_rtscope_initialize();
186
187         for (i=0; i<256; i++) {
188                 if (rtnl_rtscope_tab[i] &&
189                     strcmp(rtnl_rtscope_tab[i], arg) == 0) {
190                         cache = rtnl_rtscope_tab[i];
191                         res = i;
192                         *id = res;
193                         return 0;
194                 }
195         }
196
197         res = strtoul(arg, &end, 0);
198         if (!end || end == arg || *end || res > 255)
199                 return -1;
200         *id = res;
201         return 0;
202 }
203
204
205
206 static char * rtnl_rtrealm_tab[256] = {
207         "unknown",
208 };
209
210 static int rtnl_rtrealm_init;
211
212 static void rtnl_rtrealm_initialize(void)
213 {
214         rtnl_rtrealm_init = 1;
215         rtnl_tab_initialize("/etc/iproute2/rt_realms",
216                             rtnl_rtrealm_tab, 256);
217 }
218
219 char * rtnl_rtrealm_n2a(int id, char *buf, int len)
220 {
221         if (id<0 || id>=256) {
222                 snprintf(buf, len, "%d", id);
223                 return buf;
224         }
225         if (!rtnl_rtrealm_tab[id]) {
226                 if (!rtnl_rtrealm_init)
227                         rtnl_rtrealm_initialize();
228         }
229         if (rtnl_rtrealm_tab[id])
230                 return rtnl_rtrealm_tab[id];
231         snprintf(buf, len, "%d", id);
232         return buf;
233 }
234
235
236 int rtnl_rtrealm_a2n(__u32 *id, char *arg)
237 {
238         static char *cache = NULL;
239         static unsigned long res;
240         char *end;
241         int i;
242
243         if (cache && strcmp(cache, arg) == 0) {
244                 *id = res;
245                 return 0;
246         }
247
248         if (!rtnl_rtrealm_init)
249                 rtnl_rtrealm_initialize();
250
251         for (i=0; i<256; i++) {
252                 if (rtnl_rtrealm_tab[i] &&
253                     strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
254                         cache = rtnl_rtrealm_tab[i];
255                         res = i;
256                         *id = res;
257                         return 0;
258                 }
259         }
260
261         res = strtoul(arg, &end, 0);
262         if (!end || end == arg || *end || res > 255)
263                 return -1;
264         *id = res;
265         return 0;
266 }
267
268
269
270 static char * rtnl_rttable_tab[256] = {
271         "unspec",
272 };
273
274 static int rtnl_rttable_init;
275
276 static void rtnl_rttable_initialize(void)
277 {
278         rtnl_rttable_init = 1;
279         rtnl_rttable_tab[255] = "local";
280         rtnl_rttable_tab[254] = "main";
281         rtnl_rttable_tab[253] = "default";
282         rtnl_tab_initialize("/etc/iproute2/rt_tables",
283                             rtnl_rttable_tab, 256);
284 }
285
286 char * rtnl_rttable_n2a(int id, char *buf, int len)
287 {
288         if (id<0 || id>=256) {
289                 snprintf(buf, len, "%d", id);
290                 return buf;
291         }
292         if (!rtnl_rttable_tab[id]) {
293                 if (!rtnl_rttable_init)
294                         rtnl_rttable_initialize();
295         }
296         if (rtnl_rttable_tab[id])
297                 return rtnl_rttable_tab[id];
298         snprintf(buf, len, "%d", id);
299         return buf;
300 }
301
302 int rtnl_rttable_a2n(__u32 *id, char *arg)
303 {
304         static char *cache = NULL;
305         static unsigned long res;
306         char *end;
307         int i;
308
309         if (cache && strcmp(cache, arg) == 0) {
310                 *id = res;
311                 return 0;
312         }
313
314         if (!rtnl_rttable_init)
315                 rtnl_rttable_initialize();
316
317         for (i=0; i<256; i++) {
318                 if (rtnl_rttable_tab[i] &&
319                     strcmp(rtnl_rttable_tab[i], arg) == 0) {
320                         cache = rtnl_rttable_tab[i];
321                         res = i;
322                         *id = res;
323                         return 0;
324                 }
325         }
326
327         i = strtoul(arg, &end, 0);
328         if (!end || end == arg || *end || i > 255)
329                 return -1;
330         *id = i;
331         return 0;
332 }
333
334
335 static char * rtnl_rtdsfield_tab[256] = {
336         "0",
337 };
338
339 static int rtnl_rtdsfield_init;
340
341 static void rtnl_rtdsfield_initialize(void)
342 {
343         rtnl_rtdsfield_init = 1;
344         rtnl_tab_initialize("/etc/iproute2/rt_dsfield",
345                             rtnl_rtdsfield_tab, 256);
346 }
347
348 char * rtnl_dsfield_n2a(int id, char *buf, int len)
349 {
350         if (id<0 || id>=256) {
351                 snprintf(buf, len, "%d", id);
352                 return buf;
353         }
354         if (!rtnl_rtdsfield_tab[id]) {
355                 if (!rtnl_rtdsfield_init)
356                         rtnl_rtdsfield_initialize();
357         }
358         if (rtnl_rtdsfield_tab[id])
359                 return rtnl_rtdsfield_tab[id];
360         snprintf(buf, len, "0x%02x", id);
361         return buf;
362 }
363
364
365 int rtnl_dsfield_a2n(__u32 *id, char *arg)
366 {
367         static char *cache = NULL;
368         static unsigned long res;
369         char *end;
370         int i;
371
372         if (cache && strcmp(cache, arg) == 0) {
373                 *id = res;
374                 return 0;
375         }
376
377         if (!rtnl_rtdsfield_init)
378                 rtnl_rtdsfield_initialize();
379
380         for (i=0; i<256; i++) {
381                 if (rtnl_rtdsfield_tab[i] &&
382                     strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
383                         cache = rtnl_rtdsfield_tab[i];
384                         res = i;
385                         *id = res;
386                         return 0;
387                 }
388         }
389
390         res = strtoul(arg, &end, 16);
391         if (!end || end == arg || *end || res > 255)
392                 return -1;
393         *id = res;
394         return 0;
395 }
396