[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"
#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]   = "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;
	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 (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;
	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;
	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];
		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;
	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"
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 SH	120	static char *rtnl_rtprot_tab[256] = {
	121	[RTPROT_UNSPEC] = "none",
	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",
aba5acdf SH	137	};
	138
	139
aba5acdf SH	140	static int rtnl_rtprot_init;
	141
	142	static void rtnl_rtprot_initialize(void)
	143	{
	144	rtnl_rtprot_init = 1;
fb72129b	145	rtnl_tab_initialize(CONFDIR "/rt_protos",
aba5acdf SH	146	rtnl_rtprot_tab, 256);
	147	}
	148
68ef5072	149	const char rtnl_rtprot_n2a(int id, char buf, int len)
aba5acdf	150	{
68ef5072	151	if (id < 0 \|\| id >= 256) {
46ac8a55	152	snprintf(buf, len, "%u", id);
aba5acdf SH	153	return buf;
	154	}
	155	if (!rtnl_rtprot_tab[id]) {
	156	if (!rtnl_rtprot_init)
	157	rtnl_rtprot_initialize();
	158	}
	159	if (rtnl_rtprot_tab[id])
	160	return rtnl_rtprot_tab[id];
46ac8a55	161	snprintf(buf, len, "%u", id);
aba5acdf SH	162	return buf;
	163	}
	164
46ac8a55	165	int rtnl_rtprot_a2n(__u32 id, const char arg)
aba5acdf	166	{
68ef5072	167	static char *cache;
aba5acdf SH	168	static unsigned long res;
	169	char *end;
	170	int i;
	171
	172	if (cache && strcmp(cache, arg) == 0) {
	173	*id = res;
	174	return 0;
	175	}
	176
	177	if (!rtnl_rtprot_init)
	178	rtnl_rtprot_initialize();
	179
68ef5072	180	for (i = 0; i < 256; i++) {
aba5acdf SH	181	if (rtnl_rtprot_tab[i] &&
	182	strcmp(rtnl_rtprot_tab[i], arg) == 0) {
	183	cache = rtnl_rtprot_tab[i];
	184	res = i;
	185	*id = res;
	186	return 0;
	187	}
	188	}
	189
	190	res = strtoul(arg, &end, 0);
	191	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	192	return -1;
	193	*id = res;
	194	return 0;
	195	}
	196
68ef5072 SH	197
	198	static char *rtnl_rtscope_tab[256] = {
	199	[RT_SCOPE_UNIVERSE] = "global",
	200	[RT_SCOPE_NOWHERE] = "nowhere",
	201	[RT_SCOPE_HOST] = "host",
	202	[RT_SCOPE_LINK] = "link",
	203	[RT_SCOPE_SITE] = "site",
aba5acdf SH	204	};
	205
	206	static int rtnl_rtscope_init;
	207
	208	static void rtnl_rtscope_initialize(void)
	209	{
	210	rtnl_rtscope_init = 1;
fb72129b	211	rtnl_tab_initialize(CONFDIR "/rt_scopes",
aba5acdf SH	212	rtnl_rtscope_tab, 256);
	213	}
	214
46ac8a55	215	const char rtnl_rtscope_n2a(int id, char buf, int len)
aba5acdf	216	{
68ef5072	217	if (id < 0 \|\| id >= 256) {
aba5acdf SH	218	snprintf(buf, len, "%d", id);
	219	return buf;
	220	}
68ef5072	221
aba5acdf SH	222	if (!rtnl_rtscope_tab[id]) {
	223	if (!rtnl_rtscope_init)
	224	rtnl_rtscope_initialize();
	225	}
68ef5072	226
aba5acdf SH	227	if (rtnl_rtscope_tab[id])
aba5acdf SH	228	return rtnl_rtscope_tab[id];
68ef5072	229
aba5acdf SH	230	snprintf(buf, len, "%d", id);
	231	return buf;
	232	}
	233
46ac8a55	234	int rtnl_rtscope_a2n(__u32 id, const char arg)
aba5acdf	235	{
68ef5072	236	static const char *cache;
aba5acdf SH	237	static unsigned long res;
	238	char *end;
	239	int i;
	240
	241	if (cache && strcmp(cache, arg) == 0) {
	242	*id = res;
	243	return 0;
	244	}
	245
	246	if (!rtnl_rtscope_init)
	247	rtnl_rtscope_initialize();
	248
68ef5072	249	for (i = 0; i < 256; i++) {
aba5acdf SH	250	if (rtnl_rtscope_tab[i] &&
	251	strcmp(rtnl_rtscope_tab[i], arg) == 0) {
	252	cache = rtnl_rtscope_tab[i];
	253	res = i;
	254	*id = res;
	255	return 0;
	256	}
	257	}
	258
	259	res = strtoul(arg, &end, 0);
	260	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	261	return -1;
	262	*id = res;
	263	return 0;
	264	}
	265
	266
68ef5072	267	static char *rtnl_rtrealm_tab[256] = {
aba5acdf SH	268	"unknown",
	269	};
	270
	271	static int rtnl_rtrealm_init;
	272
	273	static void rtnl_rtrealm_initialize(void)
	274	{
	275	rtnl_rtrealm_init = 1;
fb72129b	276	rtnl_tab_initialize(CONFDIR "/rt_realms",
aba5acdf SH	277	rtnl_rtrealm_tab, 256);
	278	}
	279
46ac8a55	280	const char rtnl_rtrealm_n2a(int id, char buf, int len)
aba5acdf	281	{
68ef5072	282	if (id < 0 \|\| id >= 256) {
aba5acdf SH	283	snprintf(buf, len, "%d", id);
	284	return buf;
	285	}
	286	if (!rtnl_rtrealm_tab[id]) {
	287	if (!rtnl_rtrealm_init)
	288	rtnl_rtrealm_initialize();
	289	}
	290	if (rtnl_rtrealm_tab[id])
	291	return rtnl_rtrealm_tab[id];
	292	snprintf(buf, len, "%d", id);
	293	return buf;
	294	}
	295
	296
46ac8a55	297	int rtnl_rtrealm_a2n(__u32 id, const char arg)
aba5acdf	298	{
68ef5072	299	static char *cache;
aba5acdf SH	300	static unsigned long res;
	301	char *end;
	302	int i;
	303
	304	if (cache && strcmp(cache, arg) == 0) {
	305	*id = res;
	306	return 0;
	307	}
	308
	309	if (!rtnl_rtrealm_init)
	310	rtnl_rtrealm_initialize();
	311
68ef5072	312	for (i = 0; i < 256; i++) {
aba5acdf SH	313	if (rtnl_rtrealm_tab[i] &&
	314	strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
	315	cache = rtnl_rtrealm_tab[i];
	316	res = i;
	317	*id = res;
	318	return 0;
	319	}
	320	}
	321
	322	res = strtoul(arg, &end, 0);
	323	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	324	return -1;
	325	*id = res;
	326	return 0;
	327	}
	328
	329
81ebcb2a MY	330	static struct rtnl_hash_entry dflt_table_entry = { .name = "default" };
	331	static struct rtnl_hash_entry main_table_entry = { .name = "main" };
	332	static struct rtnl_hash_entry local_table_entry = { .name = "local" };
aba5acdf	333
68ef5072	334	static struct rtnl_hash_entry *rtnl_rttable_hash[256] = {
81ebcb2a MY	335	[RT_TABLE_DEFAULT] = &dflt_table_entry,
	336	[RT_TABLE_MAIN] = &main_table_entry,
	337	[RT_TABLE_LOCAL] = &local_table_entry,
aba5acdf SH	338	};
	339
	340	static int rtnl_rttable_init;
	341
	342	static void rtnl_rttable_initialize(void)
	343	{
13ada95d DA	344	struct dirent *de;
13ada95d DA	345	DIR *d;
81ebcb2a MY	346	int i;
81ebcb2a MY	347
aba5acdf	348	rtnl_rttable_init = 1;
81ebcb2a MY	349	for (i = 0; i < 256; i++) {
	350	if (rtnl_rttable_hash[i])
	351	rtnl_rttable_hash[i]->id = i;
	352	}
fb72129b	353	rtnl_hash_initialize(CONFDIR "/rt_tables",
9c47d877	354	rtnl_rttable_hash, 256);
13ada95d DA	355
	356	d = opendir(CONFDIR "/rt_tables.d");
	357	if (!d)
	358	return;
	359
	360	while ((de = readdir(d)) != NULL) {
	361	char path[PATH_MAX];
	362	size_t len;
	363
	364	if (*de->d_name == '.')
	365	continue;
	366
	367	/* only consider filenames ending in '.conf' */
	368	len = strlen(de->d_name);
	369	if (len <= 5)
	370	continue;
	371	if (strcmp(de->d_name + len - 5, ".conf"))
	372	continue;
	373
68ef5072 SH	374	snprintf(path, sizeof(path),
68ef5072 SH	375	CONFDIR "/rt_tables.d/%s", de->d_name);
13ada95d DA	376	rtnl_hash_initialize(path, rtnl_rttable_hash, 256);
	377	}
	378	closedir(d);
aba5acdf SH	379	}
aba5acdf SH	380
68ef5072	381	const char rtnl_rttable_n2a(__u32 id, char buf, int len)
aba5acdf	382	{
9c47d877 PM	383	struct rtnl_hash_entry *entry;
9c47d877 PM	384
887a5d00	385	if (id > RT_TABLE_MAX) {
9c47d877	386	snprintf(buf, len, "%u", id);
aba5acdf SH	387	return buf;
aba5acdf SH	388	}
9c47d877 PM	389	if (!rtnl_rttable_init)
	390	rtnl_rttable_initialize();
	391	entry = rtnl_rttable_hash[id & 255];
	392	while (entry && entry->id != id)
	393	entry = entry->next;
	394	if (entry)
	395	return entry->name;
	396	snprintf(buf, len, "%u", id);
aba5acdf SH	397	return buf;
	398	}
	399
46ac8a55	400	int rtnl_rttable_a2n(__u32 id, const char arg)
aba5acdf	401	{
68ef5072	402	static const char *cache;
aba5acdf	403	static unsigned long res;
9c47d877	404	struct rtnl_hash_entry *entry;
aba5acdf	405	char *end;
34e95647	406	__u32 i;
aba5acdf SH	407
	408	if (cache && strcmp(cache, arg) == 0) {
	409	*id = res;
	410	return 0;
	411	}
	412
	413	if (!rtnl_rttable_init)
	414	rtnl_rttable_initialize();
	415
68ef5072	416	for (i = 0; i < 256; i++) {
9c47d877 PM	417	entry = rtnl_rttable_hash[i];
	418	while (entry && strcmp(entry->name, arg))
	419	entry = entry->next;
	420	if (entry) {
	421	cache = entry->name;
	422	res = entry->id;
aba5acdf SH	423	*id = res;
	424	return 0;
	425	}
	426	}
	427
	428	i = strtoul(arg, &end, 0);
9c47d877	429	if (!end \|\| end == arg \|\| *end \|\| i > RT_TABLE_MAX)
aba5acdf SH	430	return -1;
	431	*id = i;
	432	return 0;
	433	}
	434
	435
68ef5072	436	static char *rtnl_rtdsfield_tab[256] = {
aba5acdf SH	437	"0",
	438	};
	439
	440	static int rtnl_rtdsfield_init;
	441
	442	static void rtnl_rtdsfield_initialize(void)
	443	{
	444	rtnl_rtdsfield_init = 1;
fb72129b	445	rtnl_tab_initialize(CONFDIR "/rt_dsfield",
aba5acdf SH	446	rtnl_rtdsfield_tab, 256);
	447	}
	448
46ac8a55	449	const char rtnl_dsfield_n2a(int id, char buf, int len)
aba5acdf	450	{
68ef5072	451	if (id < 0 \|\| id >= 256) {
aba5acdf SH	452	snprintf(buf, len, "%d", id);
	453	return buf;
	454	}
	455	if (!rtnl_rtdsfield_tab[id]) {
	456	if (!rtnl_rtdsfield_init)
	457	rtnl_rtdsfield_initialize();
	458	}
	459	if (rtnl_rtdsfield_tab[id])
	460	return rtnl_rtdsfield_tab[id];
	461	snprintf(buf, len, "0x%02x", id);
	462	return buf;
	463	}
	464
	465
46ac8a55	466	int rtnl_dsfield_a2n(__u32 id, const char arg)
aba5acdf	467	{
68ef5072	468	static char *cache;
aba5acdf SH	469	static unsigned long res;
	470	char *end;
	471	int i;
	472
	473	if (cache && strcmp(cache, arg) == 0) {
	474	*id = res;
	475	return 0;
	476	}
	477
	478	if (!rtnl_rtdsfield_init)
	479	rtnl_rtdsfield_initialize();
	480
68ef5072	481	for (i = 0; i < 256; i++) {
aba5acdf SH	482	if (rtnl_rtdsfield_tab[i] &&
	483	strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
	484	cache = rtnl_rtdsfield_tab[i];
	485	res = i;
	486	*id = res;
	487	return 0;
	488	}
	489	}
	490
	491	res = strtoul(arg, &end, 16);
	492	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	493	return -1;
	494	*id = res;
	495	return 0;
	496	}
	497
ac694c33	498
68ef5072 SH	499	static struct rtnl_hash_entry dflt_group_entry = {
	500	.id = 0, .name = "default"
	501	};
ac694c33	502
68ef5072	503	static struct rtnl_hash_entry *rtnl_group_hash[256] = {
ac694c33 VD	504	[0] = &dflt_group_entry,
	505	};
	506
	507	static int rtnl_group_init;
	508
	509	static void rtnl_group_initialize(void)
	510	{
	511	rtnl_group_init = 1;
4e5615b3	512	rtnl_hash_initialize(CONFDIR "/group",
ac694c33 VD	513	rtnl_group_hash, 256);
	514	}
	515
46ac8a55	516	int rtnl_group_a2n(int id, const char arg)
ac694c33	517	{
68ef5072	518	static const char *cache;
ac694c33 VD	519	static unsigned long res;
	520	struct rtnl_hash_entry *entry;
	521	char *end;
	522	int i;
	523
	524	if (cache && strcmp(cache, arg) == 0) {
	525	*id = res;
	526	return 0;
	527	}
	528
	529	if (!rtnl_group_init)
	530	rtnl_group_initialize();
	531
68ef5072	532	for (i = 0; i < 256; i++) {
ac694c33 VD	533	entry = rtnl_group_hash[i];
	534	while (entry && strcmp(entry->name, arg))
	535	entry = entry->next;
	536	if (entry) {
	537	cache = entry->name;
	538	res = entry->id;
	539	*id = res;
	540	return 0;
	541	}
	542	}
	543
	544	i = strtol(arg, &end, 0);
	545	if (!end \|\| end == arg \|\| *end \|\| i < 0)
	546	return -1;
	547	*id = i;
	548	return 0;
	549	}
c4fdf75d ST	550
	551	const char rtnl_group_n2a(int id, char buf, int len)
	552	{
	553	struct rtnl_hash_entry *entry;
	554	int i;
	555
	556	if (!rtnl_group_init)
	557	rtnl_group_initialize();
	558
68ef5072	559	for (i = 0; i < 256; i++) {
c4fdf75d	560	entry = rtnl_group_hash[i];
68ef5072	561	if (entry && entry->id == id)
c4fdf75d	562	return entry->name;
c4fdf75d ST	563	}
	564
	565	snprintf(buf, len, "%d", id);
	566	return buf;
	567	}
eef43b50	568
	569	static char *nl_proto_tab[256] = {
	570	[NETLINK_ROUTE] = "rtnl",
	571	[NETLINK_UNUSED] = "unused",
	572	[NETLINK_USERSOCK] = "usersock",
	573	[NETLINK_FIREWALL] = "fw",
	574	[NETLINK_SOCK_DIAG] = "tcpdiag",
	575	[NETLINK_NFLOG] = "nflog",
	576	[NETLINK_XFRM] = "xfrm",
	577	[NETLINK_SELINUX] = "selinux",
	578	[NETLINK_ISCSI] = "iscsi",
	579	[NETLINK_AUDIT] = "audit",
	580	[NETLINK_FIB_LOOKUP] = "fiblookup",
	581	[NETLINK_CONNECTOR] = "connector",
	582	[NETLINK_NETFILTER] = "nft",
	583	[NETLINK_IP6_FW] = "ip6fw",
	584	[NETLINK_DNRTMSG] = "dec-rt",
	585	[NETLINK_KOBJECT_UEVENT] = "uevent",
	586	[NETLINK_GENERIC] = "genl",
	587	[NETLINK_SCSITRANSPORT] = "scsi-trans",
	588	[NETLINK_ECRYPTFS] = "ecryptfs",
	589	[NETLINK_RDMA] = "rdma",
	590	[NETLINK_CRYPTO] = "crypto",
	591	};
	592
	593	static int nl_proto_init;
	594
	595	static void nl_proto_initialize(void)
	596	{
	597	nl_proto_init = 1;
	598	rtnl_tab_initialize(CONFDIR "/nl_protos",
	599	nl_proto_tab, 256);
	600	}
	601
	602	const char nl_proto_n2a(int id, char buf, int len)
	603	{
	604	if (id < 0 \|\| id >= 256) {
	605	snprintf(buf, len, "%u", id);
	606	return buf;
	607	}
	608
	609	if (!nl_proto_init)
	610	nl_proto_initialize();
	611
	612	if (nl_proto_tab[id])
	613	return nl_proto_tab[id];
	614
	615	snprintf(buf, len, "%u", id);
	616	return buf;
	617	}
	618
	619	int nl_proto_a2n(__u32 id, const char arg)
	620	{
68ef5072	621	static char *cache;
eef43b50	622	static unsigned long res;
	623	char *end;
	624	int i;
	625
	626	if (cache && strcmp(cache, arg) == 0) {
	627	*id = res;
	628	return 0;
	629	}
	630
	631	if (!nl_proto_init)
	632	nl_proto_initialize();
	633
	634	for (i = 0; i < 256; i++) {
	635	if (nl_proto_tab[i] &&
	636	strcmp(nl_proto_tab[i], arg) == 0) {
	637	cache = nl_proto_tab[i];
	638	res = i;
	639	*id = res;
	640	return 0;
	641	}
	642	}
	643
	644	res = strtoul(arg, &end, 0);
	645	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	646	return -1;
	647	*id = res;
	648	return 0;
	649	}