[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 <dirent.h>

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

#include "rt_names.h"

#ifndef CONFDIR
#define CONFDIR "/etc/iproute2"
#endif

#define NAME_MAX_LEN 512

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

static int fread_id_name(FILE *fp, int *id, char *namebuf)
{
	char buf[NAME_MAX_LEN];

	while (fgets(buf, sizeof(buf), fp)) {
		char *p = buf;

		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) {
			strcpy(namebuf, p);
			return -1;
		}
		return 1;
	}
	return 0;
}

static void
rtnl_hash_initialize(const char *file, struct rtnl_hash_entry **hash, int size)
{
	struct rtnl_hash_entry *entry;
	FILE *fp;
	int id;
	char namebuf[NAME_MAX_LEN] = {0};
	int ret;

	fp = fopen(file, "r");
	if (!fp)
		return;

	while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
		if (ret == -1) {
			fprintf(stderr, "Database %s is corrupted at %s\n",
					file, namebuf);
			fclose(fp);
			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(const char *file, char **tab, int size)
{
	FILE *fp;
	int id;
	char namebuf[NAME_MAX_LEN] = {0};
	int ret;

	fp = fopen(file, "r");
	if (!fp)
		return;

	while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
		if (ret == -1) {
			fprintf(stderr, "Database %s is corrupted at %s\n",
					file, namebuf);
			fclose(fp);
			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_BABEL] = "babel",
	[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(CONFDIR "/rt_protos",
			    rtnl_rtprot_tab, 256);
}

const char * rtnl_rtprot_n2a(int id, char *buf, int len)
{
	if (id<0 || id>=256) {
		snprintf(buf, len, "%u", 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, "%u", id);
	return buf;
}

int rtnl_rtprot_a2n(__u32 *id, const 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[RT_SCOPE_NOWHERE] = "nowhere";
	rtnl_rtscope_tab[RT_SCOPE_HOST]    = "host";
	rtnl_rtscope_tab[RT_SCOPE_LINK]    = "link";
	rtnl_rtscope_tab[RT_SCOPE_SITE]    = "site";
	rtnl_tab_initialize(CONFDIR "/rt_scopes",
			    rtnl_rtscope_tab, 256);
}

const 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, const char *arg)
{
	static const 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(CONFDIR "/rt_realms",
			    rtnl_rtrealm_tab, 256);
}

const 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, const 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  = { .name = "default" };
static struct rtnl_hash_entry main_table_entry  = { .name = "main" };
static struct rtnl_hash_entry local_table_entry = { .name = "local" };

static struct rtnl_hash_entry * rtnl_rttable_hash[256] = {
	[RT_TABLE_DEFAULT] = &dflt_table_entry,
	[RT_TABLE_MAIN]    = &main_table_entry,
	[RT_TABLE_LOCAL]   = &local_table_entry,
};

static int rtnl_rttable_init;

static void rtnl_rttable_initialize(void)
{
	struct dirent *de;
	DIR *d;
	int i;

	rtnl_rttable_init = 1;
	for (i = 0; i < 256; i++) {
		if (rtnl_rttable_hash[i])
			rtnl_rttable_hash[i]->id = i;
	}
	rtnl_hash_initialize(CONFDIR "/rt_tables",
			     rtnl_rttable_hash, 256);

	d = opendir(CONFDIR "/rt_tables.d");
	if (!d)
		return;

	while ((de = readdir(d)) != NULL) {
		char path[PATH_MAX];
		size_t len;

		if (*de->d_name == '.')
			continue;

		/* only consider filenames ending in '.conf' */
		len = strlen(de->d_name);
		if (len <= 5)
			continue;
		if (strcmp(de->d_name + len - 5, ".conf"))
			continue;

		snprintf(path, sizeof(path), CONFDIR "/rt_tables.d/%s", de->d_name);
		rtnl_hash_initialize(path, rtnl_rttable_hash, 256);
	}
	closedir(d);
}

const 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, const char *arg)
{
	static const 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(CONFDIR "/rt_dsfield",
			    rtnl_rtdsfield_tab, 256);
}

const 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, const 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(CONFDIR "/group",
			     rtnl_group_hash, 256);
}

int rtnl_group_a2n(int *id, const char *arg)
{
	static const 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;
}

const char *rtnl_group_n2a(int id, char *buf, int len)
{
	struct rtnl_hash_entry *entry;
	int i;

	if (!rtnl_group_init)
		rtnl_group_initialize();

	for (i=0; i<256; i++) {
		entry = rtnl_group_hash[i];
		if (entry && entry->id == id) {
			return entry->name;
		}
	}

	snprintf(buf, len, "%d", id);
	return buf;
}

static char *nl_proto_tab[256] = {
	[NETLINK_ROUTE]          = "rtnl",
	[NETLINK_UNUSED]         = "unused",
	[NETLINK_USERSOCK]       = "usersock",
	[NETLINK_FIREWALL]       = "fw",
	[NETLINK_SOCK_DIAG]      = "tcpdiag",
	[NETLINK_NFLOG]          = "nflog",
	[NETLINK_XFRM]           = "xfrm",
	[NETLINK_SELINUX]        = "selinux",
	[NETLINK_ISCSI]          = "iscsi",
	[NETLINK_AUDIT]          = "audit",
	[NETLINK_FIB_LOOKUP]     = "fiblookup",
	[NETLINK_CONNECTOR]      = "connector",
	[NETLINK_NETFILTER]      = "nft",
	[NETLINK_IP6_FW]         = "ip6fw",
	[NETLINK_DNRTMSG]        = "dec-rt",
	[NETLINK_KOBJECT_UEVENT] = "uevent",
	[NETLINK_GENERIC]        = "genl",
	[NETLINK_SCSITRANSPORT]  = "scsi-trans",
	[NETLINK_ECRYPTFS]       = "ecryptfs",
	[NETLINK_RDMA]           = "rdma",
	[NETLINK_CRYPTO]         = "crypto",
};

static int nl_proto_init;

static void nl_proto_initialize(void)
{
	nl_proto_init = 1;
	rtnl_tab_initialize(CONFDIR "/nl_protos",
			    nl_proto_tab, 256);
}

const char *nl_proto_n2a(int id, char *buf, int len)
{
	if (id < 0 || id >= 256) {
		snprintf(buf, len, "%u", id);
		return buf;
	}

	if (!nl_proto_init)
		nl_proto_initialize();

	if (nl_proto_tab[id])
		return nl_proto_tab[id];

	snprintf(buf, len, "%u", id);
	return buf;
}

int nl_proto_a2n(__u32 *id, const 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 (!nl_proto_init)
		nl_proto_initialize();

	for (i = 0; i < 256; i++) {
		if (nl_proto_tab[i] &&
		    strcmp(nl_proto_tab[i], arg) == 0) {
			cache = nl_proto_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;
}
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	19	#include <sys/socket.h>
13ada95d	20	#include <dirent.h>
b88fd9f4 SH	21
	22	#include <asm/types.h>
	23	#include <linux/rtnetlink.h>
	24
	25	#include "rt_names.h"
aba5acdf	26
fb72129b CT	27	#ifndef CONFDIR
	28	#define CONFDIR "/etc/iproute2"
	29	#endif
	30
f00073e8	31	#define NAME_MAX_LEN 512
f00073e8	32
9c47d877 PM	33	struct rtnl_hash_entry {
9c47d877 PM	34	struct rtnl_hash_entry *next;
46ac8a55	35	const char * name;
9c47d877 PM	36	unsigned int id;
	37	};
	38
f00073e8	39	static int fread_id_name(FILE fp, int id, char *namebuf)
	40	{
	41	char buf[NAME_MAX_LEN];
	42
	43	while (fgets(buf, sizeof(buf), fp)) {
	44	char *p = buf;
	45
	46	while (p == ' ' \|\| p == '\t')
	47	p++;
	48
	49	if (p == '#' \|\| p == '\n' \|\| *p == 0)
	50	continue;
	51
	52	if (sscanf(p, "0x%x %s\n", id, namebuf) != 2 &&
	53	sscanf(p, "0x%x %s #", id, namebuf) != 2 &&
	54	sscanf(p, "%d %s\n", id, namebuf) != 2 &&
	55	sscanf(p, "%d %s #", id, namebuf) != 2) {
	56	strcpy(namebuf, p);
	57	return -1;
	58	}
	59	return 1;
	60	}
	61	return 0;
	62	}
	63
9c47d877	64	static void
46ac8a55	65	rtnl_hash_initialize(const char file, struct rtnl_hash_entry *hash, int size)
9c47d877 PM	66	{
9c47d877 PM	67	struct rtnl_hash_entry *entry;
9c47d877	68	FILE *fp;
f00073e8	69	int id;
	70	char namebuf[NAME_MAX_LEN] = {0};
	71	int ret;
9c47d877 PM	72
	73	fp = fopen(file, "r");
	74	if (!fp)
	75	return;
9c47d877	76
f00073e8	77	while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
f00073e8	78	if (ret == -1) {
9c47d877	79	fprintf(stderr, "Database %s is corrupted at %s\n",
f00073e8	80	file, namebuf);
97c13582	81	fclose(fp);
9c47d877 PM	82	return;
	83	}
	84
	85	if (id<0)
	86	continue;
f00073e8	87
9c47d877 PM	88	entry = malloc(sizeof(*entry));
	89	entry->id = id;
	90	entry->name = strdup(namebuf);
	91	entry->next = hash[id & (size - 1)];
	92	hash[id & (size - 1)] = entry;
	93	}
	94	fclose(fp);
	95	}
	96
46ac8a55	97	static void rtnl_tab_initialize(const char file, char *tab, int size)
aba5acdf	98	{
aba5acdf	99	FILE *fp;
f00073e8	100	int id;
	101	char namebuf[NAME_MAX_LEN] = {0};
	102	int ret;
aba5acdf SH	103
	104	fp = fopen(file, "r");
	105	if (!fp)
	106	return;
aba5acdf	107
f00073e8	108	while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
f00073e8	109	if (ret == -1) {
aba5acdf	110	fprintf(stderr, "Database %s is corrupted at %s\n",
f00073e8	111	file, namebuf);
97c13582	112	fclose(fp);
aba5acdf SH	113	return;
aba5acdf SH	114	}
aba5acdf SH	115	if (id<0 \|\| id>size)
	116	continue;
	117
	118	tab[id] = strdup(namebuf);
	119	}
	120	fclose(fp);
	121	}
	122
aba5acdf	123	static char * rtnl_rtprot_tab[256] = {
b88fd9f4 SH	124	[RTPROT_UNSPEC] = "none",
	125	[RTPROT_REDIRECT] ="redirect",
	126	[RTPROT_KERNEL] = "kernel",
	127	[RTPROT_BOOT] = "boot",
	128	[RTPROT_STATIC] = "static",
	129
	130	[RTPROT_GATED] = "gated",
	131	[RTPROT_RA] = "ra",
	132	[RTPROT_MRT] = "mrt",
	133	[RTPROT_ZEBRA] ="zebra",
	134	[RTPROT_BIRD] = "bird",
1fa804e0	135	[RTPROT_BABEL] = "babel",
b88fd9f4 SH	136	[RTPROT_DNROUTED] = "dnrouted",
b88fd9f4 SH	137	[RTPROT_XORP] = "xorp",
40b6c62c	138	[RTPROT_NTK] = "ntk",
1e659af3	139	[RTPROT_DHCP] = "dhcp",
aba5acdf SH	140	};
	141
	142
aba5acdf SH	143	static int rtnl_rtprot_init;
	144
	145	static void rtnl_rtprot_initialize(void)
	146	{
	147	rtnl_rtprot_init = 1;
fb72129b	148	rtnl_tab_initialize(CONFDIR "/rt_protos",
aba5acdf SH	149	rtnl_rtprot_tab, 256);
	150	}
	151
46ac8a55	152	const char * rtnl_rtprot_n2a(int id, char *buf, int len)
aba5acdf SH	153	{
aba5acdf SH	154	if (id<0 \|\| id>=256) {
46ac8a55	155	snprintf(buf, len, "%u", id);
aba5acdf SH	156	return buf;
	157	}
	158	if (!rtnl_rtprot_tab[id]) {
	159	if (!rtnl_rtprot_init)
	160	rtnl_rtprot_initialize();
	161	}
	162	if (rtnl_rtprot_tab[id])
	163	return rtnl_rtprot_tab[id];
46ac8a55	164	snprintf(buf, len, "%u", id);
aba5acdf SH	165	return buf;
	166	}
	167
46ac8a55	168	int rtnl_rtprot_a2n(__u32 id, const char arg)
aba5acdf SH	169	{
	170	static char *cache = NULL;
	171	static unsigned long res;
	172	char *end;
	173	int i;
	174
	175	if (cache && strcmp(cache, arg) == 0) {
	176	*id = res;
	177	return 0;
	178	}
	179
	180	if (!rtnl_rtprot_init)
	181	rtnl_rtprot_initialize();
	182
	183	for (i=0; i<256; i++) {
	184	if (rtnl_rtprot_tab[i] &&
	185	strcmp(rtnl_rtprot_tab[i], arg) == 0) {
	186	cache = rtnl_rtprot_tab[i];
	187	res = i;
	188	*id = res;
	189	return 0;
	190	}
	191	}
	192
	193	res = strtoul(arg, &end, 0);
	194	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	195	return -1;
	196	*id = res;
	197	return 0;
	198	}
	199
b0d30f7f	200	static char * rtnl_rtscope_tab[256] = {
aba5acdf SH	201	"global",
	202	};
	203
	204	static int rtnl_rtscope_init;
	205
	206	static void rtnl_rtscope_initialize(void)
	207	{
	208	rtnl_rtscope_init = 1;
58ed50ee MY	209	rtnl_rtscope_tab[RT_SCOPE_NOWHERE] = "nowhere";
	210	rtnl_rtscope_tab[RT_SCOPE_HOST] = "host";
	211	rtnl_rtscope_tab[RT_SCOPE_LINK] = "link";
	212	rtnl_rtscope_tab[RT_SCOPE_SITE] = "site";
fb72129b	213	rtnl_tab_initialize(CONFDIR "/rt_scopes",
aba5acdf SH	214	rtnl_rtscope_tab, 256);
	215	}
	216
46ac8a55	217	const char rtnl_rtscope_n2a(int id, char buf, int len)
aba5acdf SH	218	{
	219	if (id<0 \|\| id>=256) {
	220	snprintf(buf, len, "%d", id);
	221	return buf;
	222	}
	223	if (!rtnl_rtscope_tab[id]) {
	224	if (!rtnl_rtscope_init)
	225	rtnl_rtscope_initialize();
	226	}
	227	if (rtnl_rtscope_tab[id])
	228	return rtnl_rtscope_tab[id];
	229	snprintf(buf, len, "%d", id);
	230	return buf;
	231	}
	232
46ac8a55	233	int rtnl_rtscope_a2n(__u32 id, const char arg)
aba5acdf	234	{
46ac8a55	235	static const char *cache = NULL;
aba5acdf SH	236	static unsigned long res;
	237	char *end;
	238	int i;
	239
	240	if (cache && strcmp(cache, arg) == 0) {
	241	*id = res;
	242	return 0;
	243	}
	244
	245	if (!rtnl_rtscope_init)
	246	rtnl_rtscope_initialize();
	247
	248	for (i=0; i<256; i++) {
	249	if (rtnl_rtscope_tab[i] &&
	250	strcmp(rtnl_rtscope_tab[i], arg) == 0) {
	251	cache = rtnl_rtscope_tab[i];
	252	res = i;
	253	*id = res;
	254	return 0;
	255	}
	256	}
	257
	258	res = strtoul(arg, &end, 0);
	259	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	260	return -1;
	261	*id = res;
	262	return 0;
	263	}
	264
	265
aba5acdf SH	266	static char * rtnl_rtrealm_tab[256] = {
	267	"unknown",
	268	};
	269
	270	static int rtnl_rtrealm_init;
	271
	272	static void rtnl_rtrealm_initialize(void)
	273	{
	274	rtnl_rtrealm_init = 1;
fb72129b	275	rtnl_tab_initialize(CONFDIR "/rt_realms",
aba5acdf SH	276	rtnl_rtrealm_tab, 256);
	277	}
	278
46ac8a55	279	const char rtnl_rtrealm_n2a(int id, char buf, int len)
aba5acdf SH	280	{
	281	if (id<0 \|\| id>=256) {
	282	snprintf(buf, len, "%d", id);
	283	return buf;
	284	}
	285	if (!rtnl_rtrealm_tab[id]) {
	286	if (!rtnl_rtrealm_init)
	287	rtnl_rtrealm_initialize();
	288	}
	289	if (rtnl_rtrealm_tab[id])
	290	return rtnl_rtrealm_tab[id];
	291	snprintf(buf, len, "%d", id);
	292	return buf;
	293	}
	294
	295
46ac8a55	296	int rtnl_rtrealm_a2n(__u32 id, const char arg)
aba5acdf SH	297	{
	298	static char *cache = NULL;
	299	static unsigned long res;
	300	char *end;
	301	int i;
	302
	303	if (cache && strcmp(cache, arg) == 0) {
	304	*id = res;
	305	return 0;
	306	}
	307
	308	if (!rtnl_rtrealm_init)
	309	rtnl_rtrealm_initialize();
	310
	311	for (i=0; i<256; i++) {
	312	if (rtnl_rtrealm_tab[i] &&
	313	strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
	314	cache = rtnl_rtrealm_tab[i];
	315	res = i;
	316	*id = res;
	317	return 0;
	318	}
	319	}
	320
	321	res = strtoul(arg, &end, 0);
	322	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	323	return -1;
	324	*id = res;
	325	return 0;
	326	}
	327
	328
81ebcb2a MY	329	static struct rtnl_hash_entry dflt_table_entry = { .name = "default" };
	330	static struct rtnl_hash_entry main_table_entry = { .name = "main" };
	331	static struct rtnl_hash_entry local_table_entry = { .name = "local" };
aba5acdf	332
9c47d877	333	static struct rtnl_hash_entry * rtnl_rttable_hash[256] = {
81ebcb2a MY	334	[RT_TABLE_DEFAULT] = &dflt_table_entry,
	335	[RT_TABLE_MAIN] = &main_table_entry,
	336	[RT_TABLE_LOCAL] = &local_table_entry,
aba5acdf SH	337	};
	338
	339	static int rtnl_rttable_init;
	340
	341	static void rtnl_rttable_initialize(void)
	342	{
13ada95d DA	343	struct dirent *de;
13ada95d DA	344	DIR *d;
81ebcb2a MY	345	int i;
81ebcb2a MY	346
aba5acdf	347	rtnl_rttable_init = 1;
81ebcb2a MY	348	for (i = 0; i < 256; i++) {
	349	if (rtnl_rttable_hash[i])
	350	rtnl_rttable_hash[i]->id = i;
	351	}
fb72129b	352	rtnl_hash_initialize(CONFDIR "/rt_tables",
9c47d877	353	rtnl_rttable_hash, 256);
13ada95d DA	354
	355	d = opendir(CONFDIR "/rt_tables.d");
	356	if (!d)
	357	return;
	358
	359	while ((de = readdir(d)) != NULL) {
	360	char path[PATH_MAX];
	361	size_t len;
	362
	363	if (*de->d_name == '.')
	364	continue;
	365
	366	/* only consider filenames ending in '.conf' */
	367	len = strlen(de->d_name);
	368	if (len <= 5)
	369	continue;
	370	if (strcmp(de->d_name + len - 5, ".conf"))
	371	continue;
	372
	373	snprintf(path, sizeof(path), CONFDIR "/rt_tables.d/%s", de->d_name);
	374	rtnl_hash_initialize(path, rtnl_rttable_hash, 256);
	375	}
	376	closedir(d);
aba5acdf SH	377	}
aba5acdf SH	378
46ac8a55	379	const char * rtnl_rttable_n2a(__u32 id, char *buf, int len)
aba5acdf	380	{
9c47d877 PM	381	struct rtnl_hash_entry *entry;
9c47d877 PM	382
887a5d00	383	if (id > RT_TABLE_MAX) {
9c47d877	384	snprintf(buf, len, "%u", id);
aba5acdf SH	385	return buf;
aba5acdf SH	386	}
9c47d877 PM	387	if (!rtnl_rttable_init)
	388	rtnl_rttable_initialize();
	389	entry = rtnl_rttable_hash[id & 255];
	390	while (entry && entry->id != id)
	391	entry = entry->next;
	392	if (entry)
	393	return entry->name;
	394	snprintf(buf, len, "%u", id);
aba5acdf SH	395	return buf;
	396	}
	397
46ac8a55	398	int rtnl_rttable_a2n(__u32 id, const char arg)
aba5acdf	399	{
46ac8a55	400	static const char *cache = NULL;
aba5acdf	401	static unsigned long res;
9c47d877	402	struct rtnl_hash_entry *entry;
aba5acdf	403	char *end;
34e95647	404	__u32 i;
aba5acdf SH	405
	406	if (cache && strcmp(cache, arg) == 0) {
	407	*id = res;
	408	return 0;
	409	}
	410
	411	if (!rtnl_rttable_init)
	412	rtnl_rttable_initialize();
	413
	414	for (i=0; i<256; i++) {
9c47d877 PM	415	entry = rtnl_rttable_hash[i];
	416	while (entry && strcmp(entry->name, arg))
	417	entry = entry->next;
	418	if (entry) {
	419	cache = entry->name;
	420	res = entry->id;
aba5acdf SH	421	*id = res;
	422	return 0;
	423	}
	424	}
	425
	426	i = strtoul(arg, &end, 0);
9c47d877	427	if (!end \|\| end == arg \|\| *end \|\| i > RT_TABLE_MAX)
aba5acdf SH	428	return -1;
	429	*id = i;
	430	return 0;
	431	}
	432
	433
	434	static char * rtnl_rtdsfield_tab[256] = {
	435	"0",
	436	};
	437
	438	static int rtnl_rtdsfield_init;
	439
	440	static void rtnl_rtdsfield_initialize(void)
	441	{
	442	rtnl_rtdsfield_init = 1;
fb72129b	443	rtnl_tab_initialize(CONFDIR "/rt_dsfield",
aba5acdf SH	444	rtnl_rtdsfield_tab, 256);
	445	}
	446
46ac8a55	447	const char rtnl_dsfield_n2a(int id, char buf, int len)
aba5acdf SH	448	{
	449	if (id<0 \|\| id>=256) {
	450	snprintf(buf, len, "%d", id);
	451	return buf;
	452	}
	453	if (!rtnl_rtdsfield_tab[id]) {
	454	if (!rtnl_rtdsfield_init)
	455	rtnl_rtdsfield_initialize();
	456	}
	457	if (rtnl_rtdsfield_tab[id])
	458	return rtnl_rtdsfield_tab[id];
	459	snprintf(buf, len, "0x%02x", id);
	460	return buf;
	461	}
	462
	463
46ac8a55	464	int rtnl_dsfield_a2n(__u32 id, const char arg)
aba5acdf SH	465	{
	466	static char *cache = NULL;
	467	static unsigned long res;
	468	char *end;
	469	int i;
	470
	471	if (cache && strcmp(cache, arg) == 0) {
	472	*id = res;
	473	return 0;
	474	}
	475
	476	if (!rtnl_rtdsfield_init)
	477	rtnl_rtdsfield_initialize();
	478
	479	for (i=0; i<256; i++) {
	480	if (rtnl_rtdsfield_tab[i] &&
	481	strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
	482	cache = rtnl_rtdsfield_tab[i];
	483	res = i;
	484	*id = res;
	485	return 0;
	486	}
	487	}
	488
	489	res = strtoul(arg, &end, 16);
	490	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	491	return -1;
	492	*id = res;
	493	return 0;
	494	}
	495
ac694c33 VD	496
	497	static struct rtnl_hash_entry dflt_group_entry = { .id = 0, .name = "default" };
	498
	499	static struct rtnl_hash_entry * rtnl_group_hash[256] = {
	500	[0] = &dflt_group_entry,
	501	};
	502
	503	static int rtnl_group_init;
	504
	505	static void rtnl_group_initialize(void)
	506	{
	507	rtnl_group_init = 1;
4e5615b3	508	rtnl_hash_initialize(CONFDIR "/group",
ac694c33 VD	509	rtnl_group_hash, 256);
	510	}
	511
46ac8a55	512	int rtnl_group_a2n(int id, const char arg)
ac694c33	513	{
46ac8a55	514	static const char *cache = NULL;
ac694c33 VD	515	static unsigned long res;
	516	struct rtnl_hash_entry *entry;
	517	char *end;
	518	int i;
	519
	520	if (cache && strcmp(cache, arg) == 0) {
	521	*id = res;
	522	return 0;
	523	}
	524
	525	if (!rtnl_group_init)
	526	rtnl_group_initialize();
	527
	528	for (i=0; i<256; i++) {
	529	entry = rtnl_group_hash[i];
	530	while (entry && strcmp(entry->name, arg))
	531	entry = entry->next;
	532	if (entry) {
	533	cache = entry->name;
	534	res = entry->id;
	535	*id = res;
	536	return 0;
	537	}
	538	}
	539
	540	i = strtol(arg, &end, 0);
	541	if (!end \|\| end == arg \|\| *end \|\| i < 0)
	542	return -1;
	543	*id = i;
	544	return 0;
	545	}
c4fdf75d ST	546
	547	const char rtnl_group_n2a(int id, char buf, int len)
	548	{
	549	struct rtnl_hash_entry *entry;
	550	int i;
	551
	552	if (!rtnl_group_init)
	553	rtnl_group_initialize();
	554
	555	for (i=0; i<256; i++) {
	556	entry = rtnl_group_hash[i];
	557	if (entry && entry->id == id) {
	558	return entry->name;
	559	}
	560	}
	561
	562	snprintf(buf, len, "%d", id);
	563	return buf;
	564	}
eef43b50	565
	566	static char *nl_proto_tab[256] = {
	567	[NETLINK_ROUTE] = "rtnl",
	568	[NETLINK_UNUSED] = "unused",
	569	[NETLINK_USERSOCK] = "usersock",
	570	[NETLINK_FIREWALL] = "fw",
	571	[NETLINK_SOCK_DIAG] = "tcpdiag",
	572	[NETLINK_NFLOG] = "nflog",
	573	[NETLINK_XFRM] = "xfrm",
	574	[NETLINK_SELINUX] = "selinux",
	575	[NETLINK_ISCSI] = "iscsi",
	576	[NETLINK_AUDIT] = "audit",
	577	[NETLINK_FIB_LOOKUP] = "fiblookup",
	578	[NETLINK_CONNECTOR] = "connector",
	579	[NETLINK_NETFILTER] = "nft",
	580	[NETLINK_IP6_FW] = "ip6fw",
	581	[NETLINK_DNRTMSG] = "dec-rt",
	582	[NETLINK_KOBJECT_UEVENT] = "uevent",
	583	[NETLINK_GENERIC] = "genl",
	584	[NETLINK_SCSITRANSPORT] = "scsi-trans",
	585	[NETLINK_ECRYPTFS] = "ecryptfs",
	586	[NETLINK_RDMA] = "rdma",
	587	[NETLINK_CRYPTO] = "crypto",
	588	};
	589
	590	static int nl_proto_init;
	591
	592	static void nl_proto_initialize(void)
	593	{
	594	nl_proto_init = 1;
	595	rtnl_tab_initialize(CONFDIR "/nl_protos",
	596	nl_proto_tab, 256);
	597	}
	598
	599	const char nl_proto_n2a(int id, char buf, int len)
	600	{
	601	if (id < 0 \|\| id >= 256) {
	602	snprintf(buf, len, "%u", id);
	603	return buf;
	604	}
	605
	606	if (!nl_proto_init)
	607	nl_proto_initialize();
	608
	609	if (nl_proto_tab[id])
	610	return nl_proto_tab[id];
	611
	612	snprintf(buf, len, "%u", id);
	613	return buf;
	614	}
	615
	616	int nl_proto_a2n(__u32 id, const char arg)
	617	{
	618	static char *cache = NULL;
	619	static unsigned long res;
	620	char *end;
	621	int i;
	622
	623	if (cache && strcmp(cache, arg) == 0) {
	624	*id = res;
	625	return 0;
	626	}
	627
	628	if (!nl_proto_init)
629	nl_proto_initialize();
630
631	for (i = 0; i < 256; i++) {
632	if (nl_proto_tab[i] &&
633	strcmp(nl_proto_tab[i], arg) == 0) {
634	cache = nl_proto_tab[i];
635	res = i;
636	*id = res;
637	return 0;
638	}
639	}
640
641	res = strtoul(arg, &end, 0);
642	if (!end \|\| end == arg \|\| *end \|\| res > 255)
643	return -1;
644	*id = res;
645	return 0;
646	}