[mirror_iproute2.git] / lib / rt_names.c

/*
 * rt_names.c		rtnetlink names DB.
 *
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 *
 * Authors:	Alexey Kuznetsov, <kuznet@ms2.inr.ac.ru>
 */

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <syslog.h>
#include <fcntl.h>
#include <string.h>
#include <sys/time.h>
#include <sys/socket.h>

#include <asm/types.h>
#include <linux/rtnetlink.h>

#include "rt_names.h"

struct rtnl_hash_entry {
	struct rtnl_hash_entry *next;
	char *			name;
	unsigned int		id;
};

static void
rtnl_hash_initialize(char *file, struct rtnl_hash_entry **hash, int size)
{
	struct rtnl_hash_entry *entry;
	char buf[512];
	FILE *fp;

	fp = fopen(file, "r");
	if (!fp)
		return;
	while (fgets(buf, sizeof(buf), fp)) {
		char *p = buf;
		int id;
		char namebuf[512];

		while (*p == ' ' || *p == '\t')
			p++;
		if (*p == '#' || *p == '\n' || *p == 0)
			continue;
		if (sscanf(p, "0x%x %s\n", &id, namebuf) != 2 &&
		    sscanf(p, "0x%x %s #", &id, namebuf) != 2 &&
		    sscanf(p, "%d %s\n", &id, namebuf) != 2 &&
		    sscanf(p, "%d %s #", &id, namebuf) != 2) {
			fprintf(stderr, "Database %s is corrupted at %s\n",
				file, p);
			return;
		}

		if (id<0)
			continue;
		entry = malloc(sizeof(*entry));
		entry->id   = id;
		entry->name = strdup(namebuf);
		entry->next = hash[id & (size - 1)];
		hash[id & (size - 1)] = entry;
	}
	fclose(fp);
}

static void rtnl_tab_initialize(char *file, char **tab, int size)
{
	char buf[512];
	FILE *fp;

	fp = fopen(file, "r");
	if (!fp)
		return;
	while (fgets(buf, sizeof(buf), fp)) {
		char *p = buf;
		int id;
		char namebuf[512];

		while (*p == ' ' || *p == '\t')
			p++;
		if (*p == '#' || *p == '\n' || *p == 0)
			continue;
		if (sscanf(p, "0x%x %s\n", &id, namebuf) != 2 &&
		    sscanf(p, "0x%x %s #", &id, namebuf) != 2 &&
		    sscanf(p, "%d %s\n", &id, namebuf) != 2 &&
		    sscanf(p, "%d %s #", &id, namebuf) != 2) {
			fprintf(stderr, "Database %s is corrupted at %s\n",
				file, p);
			return;
		}

		if (id<0 || id>size)
			continue;

		tab[id] = strdup(namebuf);
	}
	fclose(fp);
}

static char * rtnl_rtprot_tab[256] = {
	[RTPROT_UNSPEC] = "none",
	[RTPROT_REDIRECT] ="redirect",
	[RTPROT_KERNEL] = "kernel",
	[RTPROT_BOOT] = "boot",
	[RTPROT_STATIC] = "static",

	[RTPROT_GATED] = "gated",
	[RTPROT_RA] = "ra",
	[RTPROT_MRT] =	"mrt",
	[RTPROT_ZEBRA] ="zebra",
	[RTPROT_BIRD] = "bird",
	[RTPROT_DNROUTED] = "dnrouted",
	[RTPROT_XORP] = "xorp",
	[RTPROT_NTK] = "ntk",
	[RTPROT_DHCP] = "dhcp",
};


static int rtnl_rtprot_init;

static void rtnl_rtprot_initialize(void)
{
	rtnl_rtprot_init = 1;
	rtnl_tab_initialize("/etc/iproute2/rt_protos",
			    rtnl_rtprot_tab, 256);
}

char * rtnl_rtprot_n2a(int id, char *buf, int len)
{
	if (id<0 || id>=256) {
		snprintf(buf, len, "%d", id);
		return buf;
	}
	if (!rtnl_rtprot_tab[id]) {
		if (!rtnl_rtprot_init)
			rtnl_rtprot_initialize();
	}
	if (rtnl_rtprot_tab[id])
		return rtnl_rtprot_tab[id];
	snprintf(buf, len, "%d", id);
	return buf;
}

int rtnl_rtprot_a2n(__u32 *id, char *arg)
{
	static char *cache = NULL;
	static unsigned long res;
	char *end;
	int i;

	if (cache && strcmp(cache, arg) == 0) {
		*id = res;
		return 0;
	}

	if (!rtnl_rtprot_init)
		rtnl_rtprot_initialize();

	for (i=0; i<256; i++) {
		if (rtnl_rtprot_tab[i] &&
		    strcmp(rtnl_rtprot_tab[i], arg) == 0) {
			cache = rtnl_rtprot_tab[i];
			res = i;
			*id = res;
			return 0;
		}
	}

	res = strtoul(arg, &end, 0);
	if (!end || end == arg || *end || res > 255)
		return -1;
	*id = res;
	return 0;
}


static char * rtnl_rtscope_tab[256] = {
	"global",
};

static int rtnl_rtscope_init;

static void rtnl_rtscope_initialize(void)
{
	rtnl_rtscope_init = 1;
	rtnl_rtscope_tab[255] = "nowhere";
	rtnl_rtscope_tab[254] = "host";
	rtnl_rtscope_tab[253] = "link";
	rtnl_rtscope_tab[200] = "site";
	rtnl_tab_initialize("/etc/iproute2/rt_scopes",
			    rtnl_rtscope_tab, 256);
}

char * rtnl_rtscope_n2a(int id, char *buf, int len)
{
	if (id<0 || id>=256) {
		snprintf(buf, len, "%d", id);
		return buf;
	}
	if (!rtnl_rtscope_tab[id]) {
		if (!rtnl_rtscope_init)
			rtnl_rtscope_initialize();
	}
	if (rtnl_rtscope_tab[id])
		return rtnl_rtscope_tab[id];
	snprintf(buf, len, "%d", id);
	return buf;
}

int rtnl_rtscope_a2n(__u32 *id, char *arg)
{
	static char *cache = NULL;
	static unsigned long res;
	char *end;
	int i;

	if (cache && strcmp(cache, arg) == 0) {
		*id = res;
		return 0;
	}

	if (!rtnl_rtscope_init)
		rtnl_rtscope_initialize();

	for (i=0; i<256; i++) {
		if (rtnl_rtscope_tab[i] &&
		    strcmp(rtnl_rtscope_tab[i], arg) == 0) {
			cache = rtnl_rtscope_tab[i];
			res = i;
			*id = res;
			return 0;
		}
	}

	res = strtoul(arg, &end, 0);
	if (!end || end == arg || *end || res > 255)
		return -1;
	*id = res;
	return 0;
}


static char * rtnl_rtrealm_tab[256] = {
	"unknown",
};

static int rtnl_rtrealm_init;

static void rtnl_rtrealm_initialize(void)
{
	rtnl_rtrealm_init = 1;
	rtnl_tab_initialize("/etc/iproute2/rt_realms",
			    rtnl_rtrealm_tab, 256);
}

char * rtnl_rtrealm_n2a(int id, char *buf, int len)
{
	if (id<0 || id>=256) {
		snprintf(buf, len, "%d", id);
		return buf;
	}
	if (!rtnl_rtrealm_tab[id]) {
		if (!rtnl_rtrealm_init)
			rtnl_rtrealm_initialize();
	}
	if (rtnl_rtrealm_tab[id])
		return rtnl_rtrealm_tab[id];
	snprintf(buf, len, "%d", id);
	return buf;
}


int rtnl_rtrealm_a2n(__u32 *id, char *arg)
{
	static char *cache = NULL;
	static unsigned long res;
	char *end;
	int i;

	if (cache && strcmp(cache, arg) == 0) {
		*id = res;
		return 0;
	}

	if (!rtnl_rtrealm_init)
		rtnl_rtrealm_initialize();

	for (i=0; i<256; i++) {
		if (rtnl_rtrealm_tab[i] &&
		    strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
			cache = rtnl_rtrealm_tab[i];
			res = i;
			*id = res;
			return 0;
		}
	}

	res = strtoul(arg, &end, 0);
	if (!end || end == arg || *end || res > 255)
		return -1;
	*id = res;
	return 0;
}


static struct rtnl_hash_entry dflt_table_entry  = { .id = 253, .name = "default" };
static struct rtnl_hash_entry main_table_entry  = { .id = 254, .name = "main" };
static struct rtnl_hash_entry local_table_entry = { .id = 255, .name = "local" };

static struct rtnl_hash_entry * rtnl_rttable_hash[256] = {
	[253] = &dflt_table_entry,
	[254] = &main_table_entry,
	[255] = &local_table_entry,
};

static int rtnl_rttable_init;

static void rtnl_rttable_initialize(void)
{
	rtnl_rttable_init = 1;
	rtnl_hash_initialize("/etc/iproute2/rt_tables",
			     rtnl_rttable_hash, 256);
}

char * rtnl_rttable_n2a(__u32 id, char *buf, int len)
{
	struct rtnl_hash_entry *entry;

	if (id > RT_TABLE_MAX) {
		snprintf(buf, len, "%u", id);
		return buf;
	}
	if (!rtnl_rttable_init)
		rtnl_rttable_initialize();
	entry = rtnl_rttable_hash[id & 255];
	while (entry && entry->id != id)
		entry = entry->next;
	if (entry)
		return entry->name;
	snprintf(buf, len, "%u", id);
	return buf;
}

int rtnl_rttable_a2n(__u32 *id, char *arg)
{
	static char *cache = NULL;
	static unsigned long res;
	struct rtnl_hash_entry *entry;
	char *end;
	__u32 i;

	if (cache && strcmp(cache, arg) == 0) {
		*id = res;
		return 0;
	}

	if (!rtnl_rttable_init)
		rtnl_rttable_initialize();

	for (i=0; i<256; i++) {
		entry = rtnl_rttable_hash[i];
		while (entry && strcmp(entry->name, arg))
			entry = entry->next;
		if (entry) {
			cache = entry->name;
			res = entry->id;
			*id = res;
			return 0;
		}
	}

	i = strtoul(arg, &end, 0);
	if (!end || end == arg || *end || i > RT_TABLE_MAX)
		return -1;
	*id = i;
	return 0;
}


static char * rtnl_rtdsfield_tab[256] = {
	"0",
};

static int rtnl_rtdsfield_init;

static void rtnl_rtdsfield_initialize(void)
{
	rtnl_rtdsfield_init = 1;
	rtnl_tab_initialize("/etc/iproute2/rt_dsfield",
			    rtnl_rtdsfield_tab, 256);
}

char * rtnl_dsfield_n2a(int id, char *buf, int len)
{
	if (id<0 || id>=256) {
		snprintf(buf, len, "%d", id);
		return buf;
	}
	if (!rtnl_rtdsfield_tab[id]) {
		if (!rtnl_rtdsfield_init)
			rtnl_rtdsfield_initialize();
	}
	if (rtnl_rtdsfield_tab[id])
		return rtnl_rtdsfield_tab[id];
	snprintf(buf, len, "0x%02x", id);
	return buf;
}


int rtnl_dsfield_a2n(__u32 *id, char *arg)
{
	static char *cache = NULL;
	static unsigned long res;
	char *end;
	int i;

	if (cache && strcmp(cache, arg) == 0) {
		*id = res;
		return 0;
	}

	if (!rtnl_rtdsfield_init)
		rtnl_rtdsfield_initialize();

	for (i=0; i<256; i++) {
		if (rtnl_rtdsfield_tab[i] &&
		    strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
			cache = rtnl_rtdsfield_tab[i];
			res = i;
			*id = res;
			return 0;
		}
	}

	res = strtoul(arg, &end, 16);
	if (!end || end == arg || *end || res > 255)
		return -1;
	*id = res;
	return 0;
}


static struct rtnl_hash_entry dflt_group_entry  = { .id = 0, .name = "default" };

static struct rtnl_hash_entry * rtnl_group_hash[256] = {
	[0] = &dflt_group_entry,
};

static int rtnl_group_init;

static void rtnl_group_initialize(void)
{
	rtnl_group_init = 1;
	rtnl_hash_initialize("/etc/iproute2/group",
			     rtnl_group_hash, 256);
}

int rtnl_group_a2n(int *id, char *arg)
{
	static char *cache = NULL;
	static unsigned long res;
	struct rtnl_hash_entry *entry;
	char *end;
	int i;

	if (cache && strcmp(cache, arg) == 0) {
		*id = res;
		return 0;
	}

	if (!rtnl_group_init)
		rtnl_group_initialize();

	for (i=0; i<256; i++) {
		entry = rtnl_group_hash[i];
		while (entry && strcmp(entry->name, arg))
			entry = entry->next;
		if (entry) {
			cache = entry->name;
			res = entry->id;
			*id = res;
			return 0;
		}
	}

	i = strtol(arg, &end, 0);
	if (!end || end == arg || *end || i < 0)
		return -1;
	*id = i;
	return 0;
}
Commit	Line	Data
aba5acdf SH	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>
b88fd9f4 SH	19	#include <sys/socket.h>
	20
	21	#include <asm/types.h>
	22	#include <linux/rtnetlink.h>
	23
	24	#include "rt_names.h"
aba5acdf	25
9c47d877 PM	26	struct rtnl_hash_entry {
	27	struct rtnl_hash_entry *next;
	28	char * name;
	29	unsigned int id;
	30	};
	31
	32	static void
	33	rtnl_hash_initialize(char file, struct rtnl_hash_entry *hash, int size)
	34	{
	35	struct rtnl_hash_entry *entry;
	36	char buf[512];
	37	FILE *fp;
	38
	39	fp = fopen(file, "r");
	40	if (!fp)
	41	return;
	42	while (fgets(buf, sizeof(buf), fp)) {
	43	char *p = buf;
	44	int id;
	45	char namebuf[512];
	46
	47	while (p == ' ' \|\| p == '\t')
	48	p++;
	49	if (p == '#' \|\| p == '\n' \|\| *p == 0)
	50	continue;
	51	if (sscanf(p, "0x%x %s\n", &id, namebuf) != 2 &&
	52	sscanf(p, "0x%x %s #", &id, namebuf) != 2 &&
	53	sscanf(p, "%d %s\n", &id, namebuf) != 2 &&
	54	sscanf(p, "%d %s #", &id, namebuf) != 2) {
	55	fprintf(stderr, "Database %s is corrupted at %s\n",
	56	file, p);
	57	return;
	58	}
	59
	60	if (id<0)
	61	continue;
	62	entry = malloc(sizeof(*entry));
	63	entry->id = id;
	64	entry->name = strdup(namebuf);
	65	entry->next = hash[id & (size - 1)];
	66	hash[id & (size - 1)] = entry;
	67	}
	68	fclose(fp);
	69	}
	70
aba5acdf SH	71	static void rtnl_tab_initialize(char file, char *tab, int size)
	72	{
	73	char buf[512];
	74	FILE *fp;
	75
	76	fp = fopen(file, "r");
	77	if (!fp)
	78	return;
	79	while (fgets(buf, sizeof(buf), fp)) {
	80	char *p = buf;
	81	int id;
	82	char namebuf[512];
	83
	84	while (p == ' ' \|\| p == '\t')
	85	p++;
	86	if (p == '#' \|\| p == '\n' \|\| *p == 0)
	87	continue;
	88	if (sscanf(p, "0x%x %s\n", &id, namebuf) != 2 &&
	89	sscanf(p, "0x%x %s #", &id, namebuf) != 2 &&
	90	sscanf(p, "%d %s\n", &id, namebuf) != 2 &&
	91	sscanf(p, "%d %s #", &id, namebuf) != 2) {
	92	fprintf(stderr, "Database %s is corrupted at %s\n",
	93	file, p);
	94	return;
	95	}
	96
	97	if (id<0 \|\| id>size)
	98	continue;
	99
	100	tab[id] = strdup(namebuf);
	101	}
	102	fclose(fp);
	103	}
	104
aba5acdf	105	static char * rtnl_rtprot_tab[256] = {
b88fd9f4 SH	106	[RTPROT_UNSPEC] = "none",
	107	[RTPROT_REDIRECT] ="redirect",
	108	[RTPROT_KERNEL] = "kernel",
	109	[RTPROT_BOOT] = "boot",
	110	[RTPROT_STATIC] = "static",
	111
	112	[RTPROT_GATED] = "gated",
	113	[RTPROT_RA] = "ra",
	114	[RTPROT_MRT] = "mrt",
	115	[RTPROT_ZEBRA] ="zebra",
	116	[RTPROT_BIRD] = "bird",
	117	[RTPROT_DNROUTED] = "dnrouted",
	118	[RTPROT_XORP] = "xorp",
40b6c62c	119	[RTPROT_NTK] = "ntk",
1e659af3	120	[RTPROT_DHCP] = "dhcp",
aba5acdf SH	121	};
	122
	123
	124
	125	static int rtnl_rtprot_init;
	126
	127	static void rtnl_rtprot_initialize(void)
	128	{
	129	rtnl_rtprot_init = 1;
	130	rtnl_tab_initialize("/etc/iproute2/rt_protos",
	131	rtnl_rtprot_tab, 256);
	132	}
	133
	134	char * rtnl_rtprot_n2a(int id, char *buf, int len)
	135	{
	136	if (id<0 \|\| id>=256) {
	137	snprintf(buf, len, "%d", id);
	138	return buf;
	139	}
	140	if (!rtnl_rtprot_tab[id]) {
	141	if (!rtnl_rtprot_init)
	142	rtnl_rtprot_initialize();
	143	}
	144	if (rtnl_rtprot_tab[id])
	145	return rtnl_rtprot_tab[id];
	146	snprintf(buf, len, "%d", id);
	147	return buf;
	148	}
	149
	150	int rtnl_rtprot_a2n(__u32 id, char arg)
	151	{
	152	static char *cache = NULL;
	153	static unsigned long res;
	154	char *end;
	155	int i;
	156
	157	if (cache && strcmp(cache, arg) == 0) {
	158	*id = res;
	159	return 0;
	160	}
	161
	162	if (!rtnl_rtprot_init)
	163	rtnl_rtprot_initialize();
	164
	165	for (i=0; i<256; i++) {
	166	if (rtnl_rtprot_tab[i] &&
	167	strcmp(rtnl_rtprot_tab[i], arg) == 0) {
	168	cache = rtnl_rtprot_tab[i];
	169	res = i;
	170	*id = res;
	171	return 0;
	172	}
	173	}
	174
	175	res = strtoul(arg, &end, 0);
	176	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	177	return -1;
	178	*id = res;
	179	return 0;
	180	}
	181
	182
	183
	184	static char * rtnl_rtscope_tab[256] = {
185	"global",
186	};
187
188	static int rtnl_rtscope_init;
189
190	static void rtnl_rtscope_initialize(void)
191	{
192	rtnl_rtscope_init = 1;
193	rtnl_rtscope_tab[255] = "nowhere";
194	rtnl_rtscope_tab[254] = "host";
195	rtnl_rtscope_tab[253] = "link";
196	rtnl_rtscope_tab[200] = "site";
197	rtnl_tab_initialize("/etc/iproute2/rt_scopes",
198	rtnl_rtscope_tab, 256);
199	}
200
201	char * rtnl_rtscope_n2a(int id, char *buf, int len)
202	{
203	if (id<0 \|\| id>=256) {
204	snprintf(buf, len, "%d", id);
205	return buf;
206	}
207	if (!rtnl_rtscope_tab[id]) {
208	if (!rtnl_rtscope_init)
209	rtnl_rtscope_initialize();
210	}
211	if (rtnl_rtscope_tab[id])
212	return rtnl_rtscope_tab[id];
213	snprintf(buf, len, "%d", id);
214	return buf;
215	}
216
217	int rtnl_rtscope_a2n(__u32 id, char arg)
218	{
219	static char *cache = NULL;
220	static unsigned long res;
221	char *end;
222	int i;
223
224	if (cache && strcmp(cache, arg) == 0) {
225	*id = res;
226	return 0;
227	}
228
229	if (!rtnl_rtscope_init)
230	rtnl_rtscope_initialize();
231
232	for (i=0; i<256; i++) {
233	if (rtnl_rtscope_tab[i] &&
234	strcmp(rtnl_rtscope_tab[i], arg) == 0) {
235	cache = rtnl_rtscope_tab[i];
236	res = i;
237	*id = res;
238	return 0;
239	}
240	}
241
242	res = strtoul(arg, &end, 0);
243	if (!end \|\| end == arg \|\| *end \|\| res > 255)
244	return -1;
245	*id = res;
246	return 0;
247	}
248
249
250
251	static char * rtnl_rtrealm_tab[256] = {
252	"unknown",
253	};
254
255	static int rtnl_rtrealm_init;
256
257	static void rtnl_rtrealm_initialize(void)
258	{
259	rtnl_rtrealm_init = 1;
260	rtnl_tab_initialize("/etc/iproute2/rt_realms",
261	rtnl_rtrealm_tab, 256);
262	}
263
264	char * rtnl_rtrealm_n2a(int id, char *buf, int len)
265	{
266	if (id<0 \|\| id>=256) {
267	snprintf(buf, len, "%d", id);
268	return buf;
269	}
270	if (!rtnl_rtrealm_tab[id]) {
271	if (!rtnl_rtrealm_init)
272	rtnl_rtrealm_initialize();
273	}
274	if (rtnl_rtrealm_tab[id])
275	return rtnl_rtrealm_tab[id];
276	snprintf(buf, len, "%d", id);
277	return buf;
278	}
279
280
281	int rtnl_rtrealm_a2n(__u32 id, char arg)
282	{
283	static char *cache = NULL;
284	static unsigned long res;
285	char *end;
286	int i;
287
288	if (cache && strcmp(cache, arg) == 0) {
289	*id = res;
290	return 0;
291	}
292
293	if (!rtnl_rtrealm_init)
294	rtnl_rtrealm_initialize();
295
296	for (i=0; i<256; i++) {
297	if (rtnl_rtrealm_tab[i] &&
298	strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
299	cache = rtnl_rtrealm_tab[i];
300	res = i;
301	*id = res;
302	return 0;
303	}
304	}
305
306	res = strtoul(arg, &end, 0);
307	if (!end \|\| end == arg \|\| *end \|\| res > 255)
308	return -1;
309	*id = res;
310	return 0;
311	}
312
313
9c47d877 PM	314	static struct rtnl_hash_entry dflt_table_entry = { .id = 253, .name = "default" };
	315	static struct rtnl_hash_entry main_table_entry = { .id = 254, .name = "main" };
	316	static struct rtnl_hash_entry local_table_entry = { .id = 255, .name = "local" };
aba5acdf	317
9c47d877 PM	318	static struct rtnl_hash_entry * rtnl_rttable_hash[256] = {
	319	[253] = &dflt_table_entry,
	320	[254] = &main_table_entry,
	321	[255] = &local_table_entry,
aba5acdf SH	322	};
	323
	324	static int rtnl_rttable_init;
	325
	326	static void rtnl_rttable_initialize(void)
	327	{
	328	rtnl_rttable_init = 1;
9c47d877 PM	329	rtnl_hash_initialize("/etc/iproute2/rt_tables",
9c47d877 PM	330	rtnl_rttable_hash, 256);
aba5acdf SH	331	}
aba5acdf SH	332
34e95647	333	char * rtnl_rttable_n2a(__u32 id, char *buf, int len)
aba5acdf	334	{
9c47d877 PM	335	struct rtnl_hash_entry *entry;
9c47d877 PM	336
887a5d00	337	if (id > RT_TABLE_MAX) {
9c47d877	338	snprintf(buf, len, "%u", id);
aba5acdf SH	339	return buf;
aba5acdf SH	340	}
9c47d877 PM	341	if (!rtnl_rttable_init)
	342	rtnl_rttable_initialize();
	343	entry = rtnl_rttable_hash[id & 255];
	344	while (entry && entry->id != id)
	345	entry = entry->next;
	346	if (entry)
	347	return entry->name;
	348	snprintf(buf, len, "%u", id);
aba5acdf SH	349	return buf;
	350	}
	351
	352	int rtnl_rttable_a2n(__u32 id, char arg)
	353	{
	354	static char *cache = NULL;
	355	static unsigned long res;
9c47d877	356	struct rtnl_hash_entry *entry;
aba5acdf	357	char *end;
34e95647	358	__u32 i;
aba5acdf SH	359
	360	if (cache && strcmp(cache, arg) == 0) {
	361	*id = res;
	362	return 0;
	363	}
	364
	365	if (!rtnl_rttable_init)
	366	rtnl_rttable_initialize();
	367
	368	for (i=0; i<256; i++) {
9c47d877 PM	369	entry = rtnl_rttable_hash[i];
	370	while (entry && strcmp(entry->name, arg))
	371	entry = entry->next;
	372	if (entry) {
	373	cache = entry->name;
	374	res = entry->id;
aba5acdf SH	375	*id = res;
	376	return 0;
	377	}
	378	}
	379
	380	i = strtoul(arg, &end, 0);
9c47d877	381	if (!end \|\| end == arg \|\| *end \|\| i > RT_TABLE_MAX)
aba5acdf SH	382	return -1;
	383	*id = i;
	384	return 0;
	385	}
	386
	387
	388	static char * rtnl_rtdsfield_tab[256] = {
	389	"0",
	390	};
	391
	392	static int rtnl_rtdsfield_init;
	393
	394	static void rtnl_rtdsfield_initialize(void)
	395	{
	396	rtnl_rtdsfield_init = 1;
	397	rtnl_tab_initialize("/etc/iproute2/rt_dsfield",
	398	rtnl_rtdsfield_tab, 256);
	399	}
	400
	401	char * rtnl_dsfield_n2a(int id, char *buf, int len)
	402	{
	403	if (id<0 \|\| id>=256) {
	404	snprintf(buf, len, "%d", id);
	405	return buf;
	406	}
	407	if (!rtnl_rtdsfield_tab[id]) {
	408	if (!rtnl_rtdsfield_init)
	409	rtnl_rtdsfield_initialize();
	410	}
	411	if (rtnl_rtdsfield_tab[id])
	412	return rtnl_rtdsfield_tab[id];
	413	snprintf(buf, len, "0x%02x", id);
	414	return buf;
	415	}
	416
	417
	418	int rtnl_dsfield_a2n(__u32 id, char arg)
	419	{
	420	static char *cache = NULL;
	421	static unsigned long res;
	422	char *end;
	423	int i;
	424
	425	if (cache && strcmp(cache, arg) == 0) {
	426	*id = res;
	427	return 0;
	428	}
	429
	430	if (!rtnl_rtdsfield_init)
	431	rtnl_rtdsfield_initialize();
	432
	433	for (i=0; i<256; i++) {
	434	if (rtnl_rtdsfield_tab[i] &&
	435	strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
	436	cache = rtnl_rtdsfield_tab[i];
	437	res = i;
	438	*id = res;
	439	return 0;
	440	}
	441	}
	442
	443	res = strtoul(arg, &end, 16);
	444	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	445	return -1;
446	*id = res;
447	return 0;
448	}
449
ac694c33 VD	450
	451	static struct rtnl_hash_entry dflt_group_entry = { .id = 0, .name = "default" };
	452
	453	static struct rtnl_hash_entry * rtnl_group_hash[256] = {
	454	[0] = &dflt_group_entry,
	455	};
	456
	457	static int rtnl_group_init;
	458
	459	static void rtnl_group_initialize(void)
	460	{
	461	rtnl_group_init = 1;
	462	rtnl_hash_initialize("/etc/iproute2/group",
	463	rtnl_group_hash, 256);
	464	}
	465
	466	int rtnl_group_a2n(int id, char arg)
	467	{
	468	static char *cache = NULL;
	469	static unsigned long res;
	470	struct rtnl_hash_entry *entry;
	471	char *end;
	472	int i;
	473
	474	if (cache && strcmp(cache, arg) == 0) {
	475	*id = res;
	476	return 0;
	477	}
	478
	479	if (!rtnl_group_init)
	480	rtnl_group_initialize();
	481
	482	for (i=0; i<256; i++) {
	483	entry = rtnl_group_hash[i];
	484	while (entry && strcmp(entry->name, arg))
	485	entry = entry->next;
	486	if (entry) {
	487	cache = entry->name;
	488	res = entry->id;
	489	*id = res;
	490	return 0;
	491	}
	492	}
	493
	494	i = strtol(arg, &end, 0);
	495	if (!end \|\| end == arg \|\| *end \|\| i < 0)
	496	return -1;
	497	*id = i;
	498	return 0;
	499	}