[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 <fcntl.h>
#include <string.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <dirent.h>
#include <limits.h>

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

#include "rt_names.h"
#include "utils.h"

#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]   = "unspec",
	[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",
	[RTPROT_BGP]	  = "bgp",
	[RTPROT_ISIS]	  = "isis",
	[RTPROT_OSPF]	  = "ospf",
	[RTPROT_RIP]	  = "rip",
	[RTPROT_EIGRP]	  = "eigrp",
};


static int rtnl_rtprot_init;

static void rtnl_rtprot_initialize(void)
{
	struct dirent *de;
	DIR *d;

	rtnl_rtprot_init = 1;
	rtnl_tab_initialize(CONFDIR "/rt_protos",
			    rtnl_rtprot_tab, 256);

	d = opendir(CONFDIR "/rt_protos.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_protos.d/%s",
			 de->d_name);
		rtnl_tab_initialize(path, rtnl_rtprot_tab, 256);
	}
	closedir(d);
}

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;
	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] = {
	[RT_SCOPE_UNIVERSE]	= "global",
	[RT_SCOPE_NOWHERE]	= "nowhere",
	[RT_SCOPE_HOST]		= "host",
	[RT_SCOPE_LINK]		= "link",
	[RT_SCOPE_SITE]		= "site",
};

static int rtnl_rtscope_init;

static void rtnl_rtscope_initialize(void)
{
	rtnl_rtscope_init = 1;
	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;
	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;
	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 (!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;
	static unsigned long res;
	struct rtnl_hash_entry *entry;
	char *end;
	unsigned long 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;
	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;
	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];

		while (entry) {
			if (entry->id == id)
				return entry->name;
			entry = entry->next;
		}
	}

	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;
	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>
aba5acdf SH	15	#include <fcntl.h>
	16	#include <string.h>
	17	#include <sys/time.h>
b88fd9f4	18	#include <sys/socket.h>
13ada95d	19	#include <dirent.h>
4a36b4c2	20	#include <limits.h>
b88fd9f4 SH	21
	22	#include <asm/types.h>
	23	#include <linux/rtnetlink.h>
	24
	25	#include "rt_names.h"
f6793eec	26	#include "utils.h"
fb72129b	27
f00073e8	28	#define NAME_MAX_LEN 512
f00073e8	29
9c47d877	30	struct rtnl_hash_entry {
68ef5072 SH	31	struct rtnl_hash_entry *next;
68ef5072 SH	32	const char *name;
9c47d877 PM	33	unsigned int id;
	34	};
	35
f00073e8	36	static int fread_id_name(FILE fp, int id, char *namebuf)
	37	{
	38	char buf[NAME_MAX_LEN];
	39
	40	while (fgets(buf, sizeof(buf), fp)) {
	41	char *p = buf;
	42
	43	while (p == ' ' \|\| p == '\t')
	44	p++;
	45
	46	if (p == '#' \|\| p == '\n' \|\| *p == 0)
	47	continue;
	48
	49	if (sscanf(p, "0x%x %s\n", id, namebuf) != 2 &&
	50	sscanf(p, "0x%x %s #", id, namebuf) != 2 &&
	51	sscanf(p, "%d %s\n", id, namebuf) != 2 &&
	52	sscanf(p, "%d %s #", id, namebuf) != 2) {
	53	strcpy(namebuf, p);
	54	return -1;
	55	}
	56	return 1;
	57	}
	58	return 0;
	59	}
	60
9c47d877	61	static void
46ac8a55	62	rtnl_hash_initialize(const char file, struct rtnl_hash_entry *hash, int size)
9c47d877 PM	63	{
9c47d877 PM	64	struct rtnl_hash_entry *entry;
9c47d877	65	FILE *fp;
f00073e8	66	int id;
	67	char namebuf[NAME_MAX_LEN] = {0};
	68	int ret;
9c47d877 PM	69
	70	fp = fopen(file, "r");
	71	if (!fp)
	72	return;
9c47d877	73
f00073e8	74	while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
f00073e8	75	if (ret == -1) {
9c47d877	76	fprintf(stderr, "Database %s is corrupted at %s\n",
f00073e8	77	file, namebuf);
97c13582	78	fclose(fp);
9c47d877 PM	79	return;
	80	}
	81
68ef5072	82	if (id < 0)
9c47d877	83	continue;
f00073e8	84
9c47d877 PM	85	entry = malloc(sizeof(*entry));
	86	entry->id = id;
	87	entry->name = strdup(namebuf);
	88	entry->next = hash[id & (size - 1)];
	89	hash[id & (size - 1)] = entry;
	90	}
	91	fclose(fp);
	92	}
	93
46ac8a55	94	static void rtnl_tab_initialize(const char file, char *tab, int size)
aba5acdf	95	{
aba5acdf	96	FILE *fp;
f00073e8	97	int id;
	98	char namebuf[NAME_MAX_LEN] = {0};
	99	int ret;
aba5acdf SH	100
	101	fp = fopen(file, "r");
	102	if (!fp)
	103	return;
aba5acdf	104
f00073e8	105	while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
f00073e8	106	if (ret == -1) {
aba5acdf	107	fprintf(stderr, "Database %s is corrupted at %s\n",
f00073e8	108	file, namebuf);
97c13582	109	fclose(fp);
aba5acdf SH	110	return;
aba5acdf SH	111	}
68ef5072	112	if (id < 0 \|\| id > size)
aba5acdf SH	113	continue;
	114
	115	tab[id] = strdup(namebuf);
	116	}
	117	fclose(fp);
	118	}
	119
68ef5072	120	static char *rtnl_rtprot_tab[256] = {
1ca2e08b	121	[RTPROT_UNSPEC] = "unspec",
68ef5072 SH	122	[RTPROT_REDIRECT] = "redirect",
	123	[RTPROT_KERNEL] = "kernel",
	124	[RTPROT_BOOT] = "boot",
	125	[RTPROT_STATIC] = "static",
	126
	127	[RTPROT_GATED] = "gated",
	128	[RTPROT_RA] = "ra",
	129	[RTPROT_MRT] = "mrt",
	130	[RTPROT_ZEBRA] = "zebra",
	131	[RTPROT_BIRD] = "bird",
	132	[RTPROT_BABEL] = "babel",
b88fd9f4	133	[RTPROT_DNROUTED] = "dnrouted",
68ef5072 SH	134	[RTPROT_XORP] = "xorp",
	135	[RTPROT_NTK] = "ntk",
	136	[RTPROT_DHCP] = "dhcp",
a313455c DS	137	[RTPROT_BGP] = "bgp",
	138	[RTPROT_ISIS] = "isis",
	139	[RTPROT_OSPF] = "ospf",
	140	[RTPROT_RIP] = "rip",
	141	[RTPROT_EIGRP] = "eigrp",
aba5acdf SH	142	};
	143
	144
aba5acdf SH	145	static int rtnl_rtprot_init;
	146
	147	static void rtnl_rtprot_initialize(void)
	148	{
719e331f DA	149	struct dirent *de;
	150	DIR *d;
	151
aba5acdf	152	rtnl_rtprot_init = 1;
fb72129b	153	rtnl_tab_initialize(CONFDIR "/rt_protos",
aba5acdf	154	rtnl_rtprot_tab, 256);
719e331f DA	155
	156	d = opendir(CONFDIR "/rt_protos.d");
	157	if (!d)
	158	return;
	159
	160	while ((de = readdir(d)) != NULL) {
	161	char path[PATH_MAX];
	162	size_t len;
	163
	164	if (*de->d_name == '.')
	165	continue;
	166
	167	/* only consider filenames ending in '.conf' */
	168	len = strlen(de->d_name);
	169	if (len <= 5)
	170	continue;
	171	if (strcmp(de->d_name + len - 5, ".conf"))
	172	continue;
	173
	174	snprintf(path, sizeof(path), CONFDIR "/rt_protos.d/%s",
	175	de->d_name);
	176	rtnl_tab_initialize(path, rtnl_rtprot_tab, 256);
	177	}
	178	closedir(d);
aba5acdf SH	179	}
aba5acdf SH	180
68ef5072	181	const char rtnl_rtprot_n2a(int id, char buf, int len)
aba5acdf	182	{
68ef5072	183	if (id < 0 \|\| id >= 256) {
46ac8a55	184	snprintf(buf, len, "%u", id);
aba5acdf SH	185	return buf;
	186	}
	187	if (!rtnl_rtprot_tab[id]) {
	188	if (!rtnl_rtprot_init)
	189	rtnl_rtprot_initialize();
	190	}
	191	if (rtnl_rtprot_tab[id])
	192	return rtnl_rtprot_tab[id];
46ac8a55	193	snprintf(buf, len, "%u", id);
aba5acdf SH	194	return buf;
	195	}
	196
46ac8a55	197	int rtnl_rtprot_a2n(__u32 id, const char arg)
aba5acdf	198	{
68ef5072	199	static char *cache;
aba5acdf SH	200	static unsigned long res;
	201	char *end;
	202	int i;
	203
	204	if (cache && strcmp(cache, arg) == 0) {
	205	*id = res;
	206	return 0;
	207	}
	208
	209	if (!rtnl_rtprot_init)
	210	rtnl_rtprot_initialize();
	211
68ef5072	212	for (i = 0; i < 256; i++) {
aba5acdf SH	213	if (rtnl_rtprot_tab[i] &&
	214	strcmp(rtnl_rtprot_tab[i], arg) == 0) {
	215	cache = rtnl_rtprot_tab[i];
	216	res = i;
	217	*id = res;
	218	return 0;
	219	}
	220	}
	221
	222	res = strtoul(arg, &end, 0);
	223	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	224	return -1;
	225	*id = res;
	226	return 0;
	227	}
	228
68ef5072 SH	229
	230	static char *rtnl_rtscope_tab[256] = {
	231	[RT_SCOPE_UNIVERSE] = "global",
	232	[RT_SCOPE_NOWHERE] = "nowhere",
	233	[RT_SCOPE_HOST] = "host",
	234	[RT_SCOPE_LINK] = "link",
	235	[RT_SCOPE_SITE] = "site",
aba5acdf SH	236	};
	237
	238	static int rtnl_rtscope_init;
	239
	240	static void rtnl_rtscope_initialize(void)
	241	{
	242	rtnl_rtscope_init = 1;
fb72129b	243	rtnl_tab_initialize(CONFDIR "/rt_scopes",
aba5acdf SH	244	rtnl_rtscope_tab, 256);
	245	}
	246
46ac8a55	247	const char rtnl_rtscope_n2a(int id, char buf, int len)
aba5acdf	248	{
68ef5072	249	if (id < 0 \|\| id >= 256) {
aba5acdf SH	250	snprintf(buf, len, "%d", id);
	251	return buf;
	252	}
68ef5072	253
aba5acdf SH	254	if (!rtnl_rtscope_tab[id]) {
	255	if (!rtnl_rtscope_init)
	256	rtnl_rtscope_initialize();
	257	}
68ef5072	258
aba5acdf SH	259	if (rtnl_rtscope_tab[id])
aba5acdf SH	260	return rtnl_rtscope_tab[id];
68ef5072	261
aba5acdf SH	262	snprintf(buf, len, "%d", id);
	263	return buf;
	264	}
	265
46ac8a55	266	int rtnl_rtscope_a2n(__u32 id, const char arg)
aba5acdf	267	{
68ef5072	268	static const char *cache;
aba5acdf SH	269	static unsigned long res;
	270	char *end;
	271	int i;
	272
	273	if (cache && strcmp(cache, arg) == 0) {
	274	*id = res;
	275	return 0;
	276	}
	277
	278	if (!rtnl_rtscope_init)
	279	rtnl_rtscope_initialize();
	280
68ef5072	281	for (i = 0; i < 256; i++) {
aba5acdf SH	282	if (rtnl_rtscope_tab[i] &&
	283	strcmp(rtnl_rtscope_tab[i], arg) == 0) {
	284	cache = rtnl_rtscope_tab[i];
	285	res = i;
	286	*id = res;
	287	return 0;
	288	}
	289	}
	290
	291	res = strtoul(arg, &end, 0);
	292	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	293	return -1;
	294	*id = res;
	295	return 0;
	296	}
	297
	298
68ef5072	299	static char *rtnl_rtrealm_tab[256] = {
aba5acdf SH	300	"unknown",
	301	};
	302
	303	static int rtnl_rtrealm_init;
	304
	305	static void rtnl_rtrealm_initialize(void)
	306	{
	307	rtnl_rtrealm_init = 1;
fb72129b	308	rtnl_tab_initialize(CONFDIR "/rt_realms",
aba5acdf SH	309	rtnl_rtrealm_tab, 256);
	310	}
	311
46ac8a55	312	const char rtnl_rtrealm_n2a(int id, char buf, int len)
aba5acdf	313	{
68ef5072	314	if (id < 0 \|\| id >= 256) {
aba5acdf SH	315	snprintf(buf, len, "%d", id);
	316	return buf;
	317	}
	318	if (!rtnl_rtrealm_tab[id]) {
	319	if (!rtnl_rtrealm_init)
	320	rtnl_rtrealm_initialize();
	321	}
	322	if (rtnl_rtrealm_tab[id])
	323	return rtnl_rtrealm_tab[id];
	324	snprintf(buf, len, "%d", id);
	325	return buf;
	326	}
	327
	328
46ac8a55	329	int rtnl_rtrealm_a2n(__u32 id, const char arg)
aba5acdf	330	{
68ef5072	331	static char *cache;
aba5acdf SH	332	static unsigned long res;
	333	char *end;
	334	int i;
	335
	336	if (cache && strcmp(cache, arg) == 0) {
	337	*id = res;
	338	return 0;
	339	}
	340
	341	if (!rtnl_rtrealm_init)
	342	rtnl_rtrealm_initialize();
	343
68ef5072	344	for (i = 0; i < 256; i++) {
aba5acdf SH	345	if (rtnl_rtrealm_tab[i] &&
	346	strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
	347	cache = rtnl_rtrealm_tab[i];
	348	res = i;
	349	*id = res;
	350	return 0;
	351	}
	352	}
	353
	354	res = strtoul(arg, &end, 0);
	355	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	356	return -1;
	357	*id = res;
	358	return 0;
	359	}
	360
	361
81ebcb2a MY	362	static struct rtnl_hash_entry dflt_table_entry = { .name = "default" };
	363	static struct rtnl_hash_entry main_table_entry = { .name = "main" };
	364	static struct rtnl_hash_entry local_table_entry = { .name = "local" };
aba5acdf	365
68ef5072	366	static struct rtnl_hash_entry *rtnl_rttable_hash[256] = {
81ebcb2a MY	367	[RT_TABLE_DEFAULT] = &dflt_table_entry,
	368	[RT_TABLE_MAIN] = &main_table_entry,
	369	[RT_TABLE_LOCAL] = &local_table_entry,
aba5acdf SH	370	};
	371
	372	static int rtnl_rttable_init;
	373
	374	static void rtnl_rttable_initialize(void)
	375	{
13ada95d DA	376	struct dirent *de;
13ada95d DA	377	DIR *d;
81ebcb2a MY	378	int i;
81ebcb2a MY	379
aba5acdf	380	rtnl_rttable_init = 1;
81ebcb2a MY	381	for (i = 0; i < 256; i++) {
	382	if (rtnl_rttable_hash[i])
	383	rtnl_rttable_hash[i]->id = i;
	384	}
fb72129b	385	rtnl_hash_initialize(CONFDIR "/rt_tables",
9c47d877	386	rtnl_rttable_hash, 256);
13ada95d DA	387
	388	d = opendir(CONFDIR "/rt_tables.d");
	389	if (!d)
	390	return;
	391
	392	while ((de = readdir(d)) != NULL) {
	393	char path[PATH_MAX];
	394	size_t len;
	395
	396	if (*de->d_name == '.')
	397	continue;
	398
	399	/* only consider filenames ending in '.conf' */
	400	len = strlen(de->d_name);
	401	if (len <= 5)
	402	continue;
	403	if (strcmp(de->d_name + len - 5, ".conf"))
	404	continue;
	405
68ef5072 SH	406	snprintf(path, sizeof(path),
68ef5072 SH	407	CONFDIR "/rt_tables.d/%s", de->d_name);
13ada95d DA	408	rtnl_hash_initialize(path, rtnl_rttable_hash, 256);
	409	}
	410	closedir(d);
aba5acdf SH	411	}
aba5acdf SH	412
68ef5072	413	const char rtnl_rttable_n2a(__u32 id, char buf, int len)
aba5acdf	414	{
9c47d877 PM	415	struct rtnl_hash_entry *entry;
9c47d877 PM	416
9c47d877 PM	417	if (!rtnl_rttable_init)
	418	rtnl_rttable_initialize();
	419	entry = rtnl_rttable_hash[id & 255];
	420	while (entry && entry->id != id)
	421	entry = entry->next;
	422	if (entry)
	423	return entry->name;
	424	snprintf(buf, len, "%u", id);
aba5acdf SH	425	return buf;
	426	}
	427
46ac8a55	428	int rtnl_rttable_a2n(__u32 id, const char arg)
aba5acdf	429	{
68ef5072	430	static const char *cache;
aba5acdf	431	static unsigned long res;
9c47d877	432	struct rtnl_hash_entry *entry;
aba5acdf	433	char *end;
5ffbf450	434	unsigned long i;
aba5acdf SH	435
	436	if (cache && strcmp(cache, arg) == 0) {
	437	*id = res;
	438	return 0;
	439	}
	440
	441	if (!rtnl_rttable_init)
	442	rtnl_rttable_initialize();
	443
68ef5072	444	for (i = 0; i < 256; i++) {
9c47d877 PM	445	entry = rtnl_rttable_hash[i];
	446	while (entry && strcmp(entry->name, arg))
	447	entry = entry->next;
	448	if (entry) {
	449	cache = entry->name;
	450	res = entry->id;
aba5acdf SH	451	*id = res;
	452	return 0;
	453	}
	454	}
	455
	456	i = strtoul(arg, &end, 0);
9c47d877	457	if (!end \|\| end == arg \|\| *end \|\| i > RT_TABLE_MAX)
aba5acdf SH	458	return -1;
	459	*id = i;
	460	return 0;
	461	}
	462
	463
68ef5072	464	static char *rtnl_rtdsfield_tab[256] = {
aba5acdf SH	465	"0",
	466	};
	467
	468	static int rtnl_rtdsfield_init;
	469
	470	static void rtnl_rtdsfield_initialize(void)
	471	{
	472	rtnl_rtdsfield_init = 1;
fb72129b	473	rtnl_tab_initialize(CONFDIR "/rt_dsfield",
aba5acdf SH	474	rtnl_rtdsfield_tab, 256);
	475	}
	476
46ac8a55	477	const char rtnl_dsfield_n2a(int id, char buf, int len)
aba5acdf	478	{
68ef5072	479	if (id < 0 \|\| id >= 256) {
aba5acdf SH	480	snprintf(buf, len, "%d", id);
	481	return buf;
	482	}
	483	if (!rtnl_rtdsfield_tab[id]) {
	484	if (!rtnl_rtdsfield_init)
	485	rtnl_rtdsfield_initialize();
	486	}
	487	if (rtnl_rtdsfield_tab[id])
	488	return rtnl_rtdsfield_tab[id];
	489	snprintf(buf, len, "0x%02x", id);
	490	return buf;
	491	}
	492
	493
46ac8a55	494	int rtnl_dsfield_a2n(__u32 id, const char arg)
aba5acdf	495	{
68ef5072	496	static char *cache;
aba5acdf SH	497	static unsigned long res;
	498	char *end;
	499	int i;
	500
	501	if (cache && strcmp(cache, arg) == 0) {
	502	*id = res;
	503	return 0;
	504	}
	505
	506	if (!rtnl_rtdsfield_init)
	507	rtnl_rtdsfield_initialize();
	508
68ef5072	509	for (i = 0; i < 256; i++) {
aba5acdf SH	510	if (rtnl_rtdsfield_tab[i] &&
	511	strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
	512	cache = rtnl_rtdsfield_tab[i];
	513	res = i;
	514	*id = res;
	515	return 0;
	516	}
	517	}
	518
	519	res = strtoul(arg, &end, 16);
	520	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	521	return -1;
	522	*id = res;
	523	return 0;
	524	}
	525
ac694c33	526
68ef5072 SH	527	static struct rtnl_hash_entry dflt_group_entry = {
	528	.id = 0, .name = "default"
	529	};
ac694c33	530
68ef5072	531	static struct rtnl_hash_entry *rtnl_group_hash[256] = {
ac694c33 VD	532	[0] = &dflt_group_entry,
	533	};
	534
	535	static int rtnl_group_init;
	536
	537	static void rtnl_group_initialize(void)
	538	{
	539	rtnl_group_init = 1;
4e5615b3	540	rtnl_hash_initialize(CONFDIR "/group",
ac694c33 VD	541	rtnl_group_hash, 256);
	542	}
	543
46ac8a55	544	int rtnl_group_a2n(int id, const char arg)
ac694c33	545	{
68ef5072	546	static const char *cache;
ac694c33 VD	547	static unsigned long res;
	548	struct rtnl_hash_entry *entry;
	549	char *end;
	550	int i;
	551
	552	if (cache && strcmp(cache, arg) == 0) {
	553	*id = res;
	554	return 0;
	555	}
	556
	557	if (!rtnl_group_init)
	558	rtnl_group_initialize();
	559
68ef5072	560	for (i = 0; i < 256; i++) {
ac694c33 VD	561	entry = rtnl_group_hash[i];
	562	while (entry && strcmp(entry->name, arg))
	563	entry = entry->next;
	564	if (entry) {
	565	cache = entry->name;
	566	res = entry->id;
	567	*id = res;
	568	return 0;
	569	}
	570	}
	571
	572	i = strtol(arg, &end, 0);
	573	if (!end \|\| end == arg \|\| *end \|\| i < 0)
	574	return -1;
	575	*id = i;
	576	return 0;
	577	}
c4fdf75d ST	578
	579	const char rtnl_group_n2a(int id, char buf, int len)
	580	{
	581	struct rtnl_hash_entry *entry;
	582	int i;
	583
	584	if (!rtnl_group_init)
	585	rtnl_group_initialize();
	586
68ef5072	587	for (i = 0; i < 256; i++) {
c4fdf75d	588	entry = rtnl_group_hash[i];
2d98dd48 ZS	589
	590	while (entry) {
	591	if (entry->id == id)
	592	return entry->name;
	593	entry = entry->next;
	594	}
c4fdf75d ST	595	}
	596
	597	snprintf(buf, len, "%d", id);
	598	return buf;
	599	}
eef43b50	600
	601	static char *nl_proto_tab[256] = {
	602	[NETLINK_ROUTE] = "rtnl",
	603	[NETLINK_UNUSED] = "unused",
	604	[NETLINK_USERSOCK] = "usersock",
	605	[NETLINK_FIREWALL] = "fw",
	606	[NETLINK_SOCK_DIAG] = "tcpdiag",
	607	[NETLINK_NFLOG] = "nflog",
	608	[NETLINK_XFRM] = "xfrm",
	609	[NETLINK_SELINUX] = "selinux",
	610	[NETLINK_ISCSI] = "iscsi",
	611	[NETLINK_AUDIT] = "audit",
	612	[NETLINK_FIB_LOOKUP] = "fiblookup",
	613	[NETLINK_CONNECTOR] = "connector",
	614	[NETLINK_NETFILTER] = "nft",
	615	[NETLINK_IP6_FW] = "ip6fw",
	616	[NETLINK_DNRTMSG] = "dec-rt",
	617	[NETLINK_KOBJECT_UEVENT] = "uevent",
	618	[NETLINK_GENERIC] = "genl",
	619	[NETLINK_SCSITRANSPORT] = "scsi-trans",
	620	[NETLINK_ECRYPTFS] = "ecryptfs",
	621	[NETLINK_RDMA] = "rdma",
	622	[NETLINK_CRYPTO] = "crypto",
	623	};
	624
	625	static int nl_proto_init;
	626
	627	static void nl_proto_initialize(void)
	628	{
	629	nl_proto_init = 1;
	630	rtnl_tab_initialize(CONFDIR "/nl_protos",
	631	nl_proto_tab, 256);
	632	}
	633
	634	const char nl_proto_n2a(int id, char buf, int len)
	635	{
	636	if (id < 0 \|\| id >= 256) {
	637	snprintf(buf, len, "%u", id);
	638	return buf;
	639	}
	640
	641	if (!nl_proto_init)
	642	nl_proto_initialize();
	643
	644	if (nl_proto_tab[id])
	645	return nl_proto_tab[id];
	646
	647	snprintf(buf, len, "%u", id);
	648	return buf;
	649	}
	650
	651	int nl_proto_a2n(__u32 id, const char arg)
	652	{
68ef5072	653	static char *cache;
eef43b50	654	static unsigned long res;
	655	char *end;
	656	int i;
	657
	658	if (cache && strcmp(cache, arg) == 0) {
	659	*id = res;
	660	return 0;
	661	}
	662
	663	if (!nl_proto_init)
	664	nl_proto_initialize();
	665
	666	for (i = 0; i < 256; i++) {
	667	if (nl_proto_tab[i] &&
	668	strcmp(nl_proto_tab[i], arg) == 0) {
	669	cache = nl_proto_tab[i];
	670	res = i;
	671	*id = res;
	672	return 0;
	673	}
	674	}
	675
	676	res = strtoul(arg, &end, 0);
	677	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	678	return -1;
	679	*id = res;
	680	return 0;
	681	}