[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

int numeric;

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_KEEPALIVED] = "keepalived",
	[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 || numeric) {
		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 || numeric) {
		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 || numeric) {
		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 (!numeric && 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)
{
	const char *name;

	if (id < 0 || id >= 256) {
		snprintf(buf, len, "%d", id);
		return buf;
	}
	if (!numeric) {
		name = rtnl_dsfield_get_name(id);
		if (name != NULL)
			return name;
	}
	snprintf(buf, len, "0x%02x", id);
	return buf;
}

const char *rtnl_dsfield_get_name(int id)
{
	if (id < 0 || id >= 256)
		return NULL;
	if (!rtnl_rtdsfield_tab[id]) {
		if (!rtnl_rtdsfield_init)
			rtnl_rtdsfield_initialize();
	}
	return rtnl_rtdsfield_tab[id];
}


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; !numeric && 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 || numeric) {
		snprintf(buf, len, "%d", 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;
}

#define PROTODOWN_REASON_NUM_BITS 32
static char *protodown_reason_tab[PROTODOWN_REASON_NUM_BITS] = {
};

static int protodown_reason_init;

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

	protodown_reason_init = 1;

	d = opendir(CONFDIR "/protodown_reasons.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 "/protodown_reasons.d/%s",
			 de->d_name);
		rtnl_tab_initialize(path, protodown_reason_tab,
				    PROTODOWN_REASON_NUM_BITS);
	}
	closedir(d);
}

int protodown_reason_n2a(int id, char *buf, int len)
{
	if (id < 0 || id >= PROTODOWN_REASON_NUM_BITS)
		return -1;

	if (numeric) {
		snprintf(buf, len, "%d", id);
		return 0;
	}

	if (!protodown_reason_init)
		protodown_reason_initialize();

	if (protodown_reason_tab[id])
		snprintf(buf, len, "%s", protodown_reason_tab[id]);
	else
		snprintf(buf, len, "%d", id);

	return 0;
}

int protodown_reason_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 (!protodown_reason_init)
		protodown_reason_initialize();

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

	res = strtoul(arg, &end, 0);
	if (!end || end == arg || *end || res >= PROTODOWN_REASON_NUM_BITS)
		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
ca697cee HL	30	int numeric;
ca697cee HL	31
9c47d877	32	struct rtnl_hash_entry {
68ef5072 SH	33	struct rtnl_hash_entry *next;
68ef5072 SH	34	const char *name;
9c47d877 PM	35	unsigned int id;
	36	};
	37
f00073e8	38	static int fread_id_name(FILE fp, int id, char *namebuf)
	39	{
	40	char buf[NAME_MAX_LEN];
	41
	42	while (fgets(buf, sizeof(buf), fp)) {
	43	char *p = buf;
	44
	45	while (p == ' ' \|\| p == '\t')
	46	p++;
	47
	48	if (p == '#' \|\| p == '\n' \|\| *p == 0)
	49	continue;
	50
	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	strcpy(namebuf, p);
	56	return -1;
	57	}
	58	return 1;
	59	}
	60	return 0;
	61	}
	62
9c47d877	63	static void
46ac8a55	64	rtnl_hash_initialize(const char file, struct rtnl_hash_entry *hash, int size)
9c47d877 PM	65	{
9c47d877 PM	66	struct rtnl_hash_entry *entry;
9c47d877	67	FILE *fp;
f00073e8	68	int id;
	69	char namebuf[NAME_MAX_LEN] = {0};
	70	int ret;
9c47d877 PM	71
	72	fp = fopen(file, "r");
	73	if (!fp)
	74	return;
9c47d877	75
f00073e8	76	while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
f00073e8	77	if (ret == -1) {
9c47d877	78	fprintf(stderr, "Database %s is corrupted at %s\n",
f00073e8	79	file, namebuf);
97c13582	80	fclose(fp);
9c47d877 PM	81	return;
	82	}
	83
68ef5072	84	if (id < 0)
9c47d877	85	continue;
f00073e8	86
9c47d877 PM	87	entry = malloc(sizeof(*entry));
	88	entry->id = id;
	89	entry->name = strdup(namebuf);
	90	entry->next = hash[id & (size - 1)];
	91	hash[id & (size - 1)] = entry;
	92	}
	93	fclose(fp);
	94	}
	95
46ac8a55	96	static void rtnl_tab_initialize(const char file, char *tab, int size)
aba5acdf	97	{
aba5acdf	98	FILE *fp;
f00073e8	99	int id;
	100	char namebuf[NAME_MAX_LEN] = {0};
	101	int ret;
aba5acdf SH	102
	103	fp = fopen(file, "r");
	104	if (!fp)
	105	return;
aba5acdf	106
f00073e8	107	while ((ret = fread_id_name(fp, &id, &namebuf[0]))) {
f00073e8	108	if (ret == -1) {
aba5acdf	109	fprintf(stderr, "Database %s is corrupted at %s\n",
f00073e8	110	file, namebuf);
97c13582	111	fclose(fp);
aba5acdf SH	112	return;
aba5acdf SH	113	}
68ef5072	114	if (id < 0 \|\| id > size)
aba5acdf SH	115	continue;
	116
	117	tab[id] = strdup(namebuf);
	118	}
	119	fclose(fp);
	120	}
	121
68ef5072	122	static char *rtnl_rtprot_tab[256] = {
30f3beea AC	123	[RTPROT_UNSPEC] = "unspec",
	124	[RTPROT_REDIRECT] = "redirect",
	125	[RTPROT_KERNEL] = "kernel",
	126	[RTPROT_BOOT] = "boot",
	127	[RTPROT_STATIC] = "static",
	128
	129	[RTPROT_GATED] = "gated",
	130	[RTPROT_RA] = "ra",
	131	[RTPROT_MRT] = "mrt",
	132	[RTPROT_ZEBRA] = "zebra",
	133	[RTPROT_BIRD] = "bird",
	134	[RTPROT_BABEL] = "babel",
	135	[RTPROT_DNROUTED] = "dnrouted",
	136	[RTPROT_XORP] = "xorp",
	137	[RTPROT_NTK] = "ntk",
	138	[RTPROT_DHCP] = "dhcp",
	139	[RTPROT_KEEPALIVED] = "keepalived",
	140	[RTPROT_BGP] = "bgp",
	141	[RTPROT_ISIS] = "isis",
	142	[RTPROT_OSPF] = "ospf",
	143	[RTPROT_RIP] = "rip",
	144	[RTPROT_EIGRP] = "eigrp",
aba5acdf SH	145	};
	146
	147
aba5acdf SH	148	static int rtnl_rtprot_init;
	149
	150	static void rtnl_rtprot_initialize(void)
	151	{
719e331f DA	152	struct dirent *de;
	153	DIR *d;
	154
aba5acdf	155	rtnl_rtprot_init = 1;
fb72129b	156	rtnl_tab_initialize(CONFDIR "/rt_protos",
aba5acdf	157	rtnl_rtprot_tab, 256);
719e331f DA	158
	159	d = opendir(CONFDIR "/rt_protos.d");
	160	if (!d)
	161	return;
	162
	163	while ((de = readdir(d)) != NULL) {
	164	char path[PATH_MAX];
	165	size_t len;
	166
	167	if (*de->d_name == '.')
	168	continue;
	169
	170	/* only consider filenames ending in '.conf' */
	171	len = strlen(de->d_name);
	172	if (len <= 5)
	173	continue;
	174	if (strcmp(de->d_name + len - 5, ".conf"))
	175	continue;
	176
	177	snprintf(path, sizeof(path), CONFDIR "/rt_protos.d/%s",
	178	de->d_name);
	179	rtnl_tab_initialize(path, rtnl_rtprot_tab, 256);
	180	}
	181	closedir(d);
aba5acdf SH	182	}
aba5acdf SH	183
68ef5072	184	const char rtnl_rtprot_n2a(int id, char buf, int len)
aba5acdf	185	{
ca697cee	186	if (id < 0 \|\| id >= 256 \|\| numeric) {
46ac8a55	187	snprintf(buf, len, "%u", id);
aba5acdf SH	188	return buf;
	189	}
	190	if (!rtnl_rtprot_tab[id]) {
	191	if (!rtnl_rtprot_init)
	192	rtnl_rtprot_initialize();
	193	}
	194	if (rtnl_rtprot_tab[id])
	195	return rtnl_rtprot_tab[id];
46ac8a55	196	snprintf(buf, len, "%u", id);
aba5acdf SH	197	return buf;
	198	}
	199
46ac8a55	200	int rtnl_rtprot_a2n(__u32 id, const char arg)
aba5acdf	201	{
68ef5072	202	static char *cache;
aba5acdf SH	203	static unsigned long res;
	204	char *end;
	205	int i;
	206
	207	if (cache && strcmp(cache, arg) == 0) {
	208	*id = res;
	209	return 0;
	210	}
	211
	212	if (!rtnl_rtprot_init)
	213	rtnl_rtprot_initialize();
	214
68ef5072	215	for (i = 0; i < 256; i++) {
aba5acdf SH	216	if (rtnl_rtprot_tab[i] &&
	217	strcmp(rtnl_rtprot_tab[i], arg) == 0) {
	218	cache = rtnl_rtprot_tab[i];
	219	res = i;
	220	*id = res;
	221	return 0;
	222	}
	223	}
	224
	225	res = strtoul(arg, &end, 0);
	226	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	227	return -1;
	228	*id = res;
	229	return 0;
	230	}
	231
68ef5072 SH	232
	233	static char *rtnl_rtscope_tab[256] = {
	234	[RT_SCOPE_UNIVERSE] = "global",
	235	[RT_SCOPE_NOWHERE] = "nowhere",
	236	[RT_SCOPE_HOST] = "host",
	237	[RT_SCOPE_LINK] = "link",
	238	[RT_SCOPE_SITE] = "site",
aba5acdf SH	239	};
	240
	241	static int rtnl_rtscope_init;
	242
	243	static void rtnl_rtscope_initialize(void)
	244	{
	245	rtnl_rtscope_init = 1;
fb72129b	246	rtnl_tab_initialize(CONFDIR "/rt_scopes",
aba5acdf SH	247	rtnl_rtscope_tab, 256);
	248	}
	249
46ac8a55	250	const char rtnl_rtscope_n2a(int id, char buf, int len)
aba5acdf	251	{
ca697cee	252	if (id < 0 \|\| id >= 256 \|\| numeric) {
aba5acdf SH	253	snprintf(buf, len, "%d", id);
	254	return buf;
	255	}
68ef5072	256
aba5acdf SH	257	if (!rtnl_rtscope_tab[id]) {
	258	if (!rtnl_rtscope_init)
	259	rtnl_rtscope_initialize();
	260	}
68ef5072	261
aba5acdf SH	262	if (rtnl_rtscope_tab[id])
aba5acdf SH	263	return rtnl_rtscope_tab[id];
68ef5072	264
aba5acdf SH	265	snprintf(buf, len, "%d", id);
	266	return buf;
	267	}
	268
46ac8a55	269	int rtnl_rtscope_a2n(__u32 id, const char arg)
aba5acdf	270	{
68ef5072	271	static const char *cache;
aba5acdf SH	272	static unsigned long res;
	273	char *end;
	274	int i;
	275
	276	if (cache && strcmp(cache, arg) == 0) {
	277	*id = res;
	278	return 0;
	279	}
	280
	281	if (!rtnl_rtscope_init)
	282	rtnl_rtscope_initialize();
	283
68ef5072	284	for (i = 0; i < 256; i++) {
aba5acdf SH	285	if (rtnl_rtscope_tab[i] &&
	286	strcmp(rtnl_rtscope_tab[i], arg) == 0) {
	287	cache = rtnl_rtscope_tab[i];
	288	res = i;
	289	*id = res;
	290	return 0;
	291	}
	292	}
	293
	294	res = strtoul(arg, &end, 0);
	295	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	296	return -1;
	297	*id = res;
	298	return 0;
	299	}
	300
	301
68ef5072	302	static char *rtnl_rtrealm_tab[256] = {
aba5acdf SH	303	"unknown",
	304	};
	305
	306	static int rtnl_rtrealm_init;
	307
	308	static void rtnl_rtrealm_initialize(void)
	309	{
	310	rtnl_rtrealm_init = 1;
fb72129b	311	rtnl_tab_initialize(CONFDIR "/rt_realms",
aba5acdf SH	312	rtnl_rtrealm_tab, 256);
	313	}
	314
46ac8a55	315	const char rtnl_rtrealm_n2a(int id, char buf, int len)
aba5acdf	316	{
ca697cee	317	if (id < 0 \|\| id >= 256 \|\| numeric) {
aba5acdf SH	318	snprintf(buf, len, "%d", id);
	319	return buf;
	320	}
	321	if (!rtnl_rtrealm_tab[id]) {
	322	if (!rtnl_rtrealm_init)
	323	rtnl_rtrealm_initialize();
	324	}
	325	if (rtnl_rtrealm_tab[id])
	326	return rtnl_rtrealm_tab[id];
	327	snprintf(buf, len, "%d", id);
	328	return buf;
	329	}
	330
	331
46ac8a55	332	int rtnl_rtrealm_a2n(__u32 id, const char arg)
aba5acdf	333	{
68ef5072	334	static char *cache;
aba5acdf SH	335	static unsigned long res;
	336	char *end;
	337	int i;
	338
	339	if (cache && strcmp(cache, arg) == 0) {
	340	*id = res;
	341	return 0;
	342	}
	343
	344	if (!rtnl_rtrealm_init)
	345	rtnl_rtrealm_initialize();
	346
68ef5072	347	for (i = 0; i < 256; i++) {
aba5acdf SH	348	if (rtnl_rtrealm_tab[i] &&
	349	strcmp(rtnl_rtrealm_tab[i], arg) == 0) {
	350	cache = rtnl_rtrealm_tab[i];
	351	res = i;
	352	*id = res;
	353	return 0;
	354	}
	355	}
	356
	357	res = strtoul(arg, &end, 0);
	358	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	359	return -1;
	360	*id = res;
	361	return 0;
	362	}
	363
	364
81ebcb2a MY	365	static struct rtnl_hash_entry dflt_table_entry = { .name = "default" };
	366	static struct rtnl_hash_entry main_table_entry = { .name = "main" };
	367	static struct rtnl_hash_entry local_table_entry = { .name = "local" };
aba5acdf	368
68ef5072	369	static struct rtnl_hash_entry *rtnl_rttable_hash[256] = {
81ebcb2a MY	370	[RT_TABLE_DEFAULT] = &dflt_table_entry,
	371	[RT_TABLE_MAIN] = &main_table_entry,
	372	[RT_TABLE_LOCAL] = &local_table_entry,
aba5acdf SH	373	};
	374
	375	static int rtnl_rttable_init;
	376
	377	static void rtnl_rttable_initialize(void)
	378	{
13ada95d DA	379	struct dirent *de;
13ada95d DA	380	DIR *d;
81ebcb2a MY	381	int i;
81ebcb2a MY	382
aba5acdf	383	rtnl_rttable_init = 1;
81ebcb2a MY	384	for (i = 0; i < 256; i++) {
	385	if (rtnl_rttable_hash[i])
	386	rtnl_rttable_hash[i]->id = i;
	387	}
fb72129b	388	rtnl_hash_initialize(CONFDIR "/rt_tables",
9c47d877	389	rtnl_rttable_hash, 256);
13ada95d DA	390
	391	d = opendir(CONFDIR "/rt_tables.d");
	392	if (!d)
	393	return;
	394
	395	while ((de = readdir(d)) != NULL) {
	396	char path[PATH_MAX];
	397	size_t len;
	398
	399	if (*de->d_name == '.')
	400	continue;
	401
	402	/* only consider filenames ending in '.conf' */
	403	len = strlen(de->d_name);
	404	if (len <= 5)
	405	continue;
	406	if (strcmp(de->d_name + len - 5, ".conf"))
	407	continue;
	408
68ef5072 SH	409	snprintf(path, sizeof(path),
68ef5072 SH	410	CONFDIR "/rt_tables.d/%s", de->d_name);
13ada95d DA	411	rtnl_hash_initialize(path, rtnl_rttable_hash, 256);
	412	}
	413	closedir(d);
aba5acdf SH	414	}
aba5acdf SH	415
68ef5072	416	const char rtnl_rttable_n2a(__u32 id, char buf, int len)
aba5acdf	417	{
9c47d877 PM	418	struct rtnl_hash_entry *entry;
9c47d877 PM	419
9c47d877 PM	420	if (!rtnl_rttable_init)
	421	rtnl_rttable_initialize();
	422	entry = rtnl_rttable_hash[id & 255];
	423	while (entry && entry->id != id)
	424	entry = entry->next;
ca697cee	425	if (!numeric && entry)
9c47d877 PM	426	return entry->name;
9c47d877 PM	427	snprintf(buf, len, "%u", id);
aba5acdf SH	428	return buf;
	429	}
	430
46ac8a55	431	int rtnl_rttable_a2n(__u32 id, const char arg)
aba5acdf	432	{
68ef5072	433	static const char *cache;
aba5acdf	434	static unsigned long res;
9c47d877	435	struct rtnl_hash_entry *entry;
aba5acdf	436	char *end;
5ffbf450	437	unsigned long i;
aba5acdf SH	438
	439	if (cache && strcmp(cache, arg) == 0) {
	440	*id = res;
	441	return 0;
	442	}
	443
	444	if (!rtnl_rttable_init)
	445	rtnl_rttable_initialize();
	446
68ef5072	447	for (i = 0; i < 256; i++) {
9c47d877 PM	448	entry = rtnl_rttable_hash[i];
	449	while (entry && strcmp(entry->name, arg))
	450	entry = entry->next;
	451	if (entry) {
	452	cache = entry->name;
	453	res = entry->id;
aba5acdf SH	454	*id = res;
	455	return 0;
	456	}
	457	}
	458
	459	i = strtoul(arg, &end, 0);
9c47d877	460	if (!end \|\| end == arg \|\| *end \|\| i > RT_TABLE_MAX)
aba5acdf SH	461	return -1;
	462	*id = i;
	463	return 0;
	464	}
	465
	466
68ef5072	467	static char *rtnl_rtdsfield_tab[256] = {
aba5acdf SH	468	"0",
	469	};
	470
	471	static int rtnl_rtdsfield_init;
	472
	473	static void rtnl_rtdsfield_initialize(void)
	474	{
	475	rtnl_rtdsfield_init = 1;
fb72129b	476	rtnl_tab_initialize(CONFDIR "/rt_dsfield",
aba5acdf SH	477	rtnl_rtdsfield_tab, 256);
	478	}
	479
46ac8a55	480	const char rtnl_dsfield_n2a(int id, char buf, int len)
aba5acdf	481	{
bf244ee6 PM	482	const char *name;
bf244ee6 PM	483
68ef5072	484	if (id < 0 \|\| id >= 256) {
aba5acdf SH	485	snprintf(buf, len, "%d", id);
	486	return buf;
	487	}
bf244ee6 PM	488	if (!numeric) {
	489	name = rtnl_dsfield_get_name(id);
	490	if (name != NULL)
	491	return name;
	492	}
	493	snprintf(buf, len, "0x%02x", id);
	494	return buf;
	495	}
	496
	497	const char *rtnl_dsfield_get_name(int id)
	498	{
	499	if (id < 0 \|\| id >= 256)
	500	return NULL;
aba5acdf SH	501	if (!rtnl_rtdsfield_tab[id]) {
	502	if (!rtnl_rtdsfield_init)
	503	rtnl_rtdsfield_initialize();
	504	}
bf244ee6	505	return rtnl_rtdsfield_tab[id];
aba5acdf SH	506	}
	507
	508
46ac8a55	509	int rtnl_dsfield_a2n(__u32 id, const char arg)
aba5acdf	510	{
68ef5072	511	static char *cache;
aba5acdf SH	512	static unsigned long res;
	513	char *end;
	514	int i;
	515
	516	if (cache && strcmp(cache, arg) == 0) {
	517	*id = res;
	518	return 0;
	519	}
	520
	521	if (!rtnl_rtdsfield_init)
	522	rtnl_rtdsfield_initialize();
	523
68ef5072	524	for (i = 0; i < 256; i++) {
aba5acdf SH	525	if (rtnl_rtdsfield_tab[i] &&
	526	strcmp(rtnl_rtdsfield_tab[i], arg) == 0) {
	527	cache = rtnl_rtdsfield_tab[i];
	528	res = i;
	529	*id = res;
	530	return 0;
	531	}
	532	}
	533
	534	res = strtoul(arg, &end, 16);
	535	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	536	return -1;
	537	*id = res;
	538	return 0;
	539	}
	540
ac694c33	541
68ef5072 SH	542	static struct rtnl_hash_entry dflt_group_entry = {
	543	.id = 0, .name = "default"
	544	};
ac694c33	545
68ef5072	546	static struct rtnl_hash_entry *rtnl_group_hash[256] = {
ac694c33 VD	547	[0] = &dflt_group_entry,
	548	};
	549
	550	static int rtnl_group_init;
	551
	552	static void rtnl_group_initialize(void)
	553	{
	554	rtnl_group_init = 1;
4e5615b3	555	rtnl_hash_initialize(CONFDIR "/group",
ac694c33 VD	556	rtnl_group_hash, 256);
	557	}
	558
46ac8a55	559	int rtnl_group_a2n(int id, const char arg)
ac694c33	560	{
68ef5072	561	static const char *cache;
ac694c33 VD	562	static unsigned long res;
	563	struct rtnl_hash_entry *entry;
	564	char *end;
	565	int i;
	566
	567	if (cache && strcmp(cache, arg) == 0) {
	568	*id = res;
	569	return 0;
	570	}
	571
	572	if (!rtnl_group_init)
	573	rtnl_group_initialize();
	574
68ef5072	575	for (i = 0; i < 256; i++) {
ac694c33 VD	576	entry = rtnl_group_hash[i];
	577	while (entry && strcmp(entry->name, arg))
	578	entry = entry->next;
	579	if (entry) {
	580	cache = entry->name;
	581	res = entry->id;
	582	*id = res;
	583	return 0;
	584	}
	585	}
	586
	587	i = strtol(arg, &end, 0);
	588	if (!end \|\| end == arg \|\| *end \|\| i < 0)
	589	return -1;
	590	*id = i;
	591	return 0;
	592	}
c4fdf75d ST	593
	594	const char rtnl_group_n2a(int id, char buf, int len)
	595	{
	596	struct rtnl_hash_entry *entry;
	597	int i;
	598
	599	if (!rtnl_group_init)
	600	rtnl_group_initialize();
	601
ca697cee	602	for (i = 0; !numeric && i < 256; i++) {
c4fdf75d	603	entry = rtnl_group_hash[i];
2d98dd48 ZS	604
	605	while (entry) {
	606	if (entry->id == id)
	607	return entry->name;
	608	entry = entry->next;
	609	}
c4fdf75d ST	610	}
	611
	612	snprintf(buf, len, "%d", id);
	613	return buf;
	614	}
eef43b50	615
	616	static char *nl_proto_tab[256] = {
	617	[NETLINK_ROUTE] = "rtnl",
	618	[NETLINK_UNUSED] = "unused",
	619	[NETLINK_USERSOCK] = "usersock",
	620	[NETLINK_FIREWALL] = "fw",
	621	[NETLINK_SOCK_DIAG] = "tcpdiag",
	622	[NETLINK_NFLOG] = "nflog",
	623	[NETLINK_XFRM] = "xfrm",
	624	[NETLINK_SELINUX] = "selinux",
	625	[NETLINK_ISCSI] = "iscsi",
	626	[NETLINK_AUDIT] = "audit",
	627	[NETLINK_FIB_LOOKUP] = "fiblookup",
	628	[NETLINK_CONNECTOR] = "connector",
	629	[NETLINK_NETFILTER] = "nft",
	630	[NETLINK_IP6_FW] = "ip6fw",
	631	[NETLINK_DNRTMSG] = "dec-rt",
	632	[NETLINK_KOBJECT_UEVENT] = "uevent",
	633	[NETLINK_GENERIC] = "genl",
	634	[NETLINK_SCSITRANSPORT] = "scsi-trans",
	635	[NETLINK_ECRYPTFS] = "ecryptfs",
	636	[NETLINK_RDMA] = "rdma",
	637	[NETLINK_CRYPTO] = "crypto",
	638	};
	639
	640	static int nl_proto_init;
	641
	642	static void nl_proto_initialize(void)
	643	{
	644	nl_proto_init = 1;
	645	rtnl_tab_initialize(CONFDIR "/nl_protos",
	646	nl_proto_tab, 256);
	647	}
	648
	649	const char nl_proto_n2a(int id, char buf, int len)
	650	{
ca697cee HL	651	if (id < 0 \|\| id >= 256 \|\| numeric) {
ca697cee HL	652	snprintf(buf, len, "%d", id);
eef43b50	653	return buf;
	654	}
	655
	656	if (!nl_proto_init)
	657	nl_proto_initialize();
	658
	659	if (nl_proto_tab[id])
	660	return nl_proto_tab[id];
	661
	662	snprintf(buf, len, "%u", id);
	663	return buf;
	664	}
	665
	666	int nl_proto_a2n(__u32 id, const char arg)
	667	{
68ef5072	668	static char *cache;
eef43b50	669	static unsigned long res;
	670	char *end;
	671	int i;
	672
	673	if (cache && strcmp(cache, arg) == 0) {
	674	*id = res;
	675	return 0;
	676	}
	677
	678	if (!nl_proto_init)
	679	nl_proto_initialize();
	680
	681	for (i = 0; i < 256; i++) {
	682	if (nl_proto_tab[i] &&
	683	strcmp(nl_proto_tab[i], arg) == 0) {
	684	cache = nl_proto_tab[i];
	685	res = i;
	686	*id = res;
	687	return 0;
	688	}
	689	}
	690
	691	res = strtoul(arg, &end, 0);
	692	if (!end \|\| end == arg \|\| *end \|\| res > 255)
	693	return -1;
	694	*id = res;
	695	return 0;
	696	}
6fd53b2a RP	697
	698	#define PROTODOWN_REASON_NUM_BITS 32
	699	static char *protodown_reason_tab[PROTODOWN_REASON_NUM_BITS] = {
	700	};
	701
	702	static int protodown_reason_init;
	703
	704	static void protodown_reason_initialize(void)
	705	{
	706	struct dirent *de;
	707	DIR *d;
	708
	709	protodown_reason_init = 1;
	710
	711	d = opendir(CONFDIR "/protodown_reasons.d");
	712	if (!d)
	713	return;
	714
	715	while ((de = readdir(d)) != NULL) {
	716	char path[PATH_MAX];
	717	size_t len;
	718
	719	if (*de->d_name == '.')
	720	continue;
	721
	722	/* only consider filenames ending in '.conf' */
	723	len = strlen(de->d_name);
	724	if (len <= 5)
	725	continue;
	726	if (strcmp(de->d_name + len - 5, ".conf"))
	727	continue;
	728
	729	snprintf(path, sizeof(path), CONFDIR "/protodown_reasons.d/%s",
	730	de->d_name);
	731	rtnl_tab_initialize(path, protodown_reason_tab,
	732	PROTODOWN_REASON_NUM_BITS);
	733	}
	734	closedir(d);
	735	}
	736
	737	int protodown_reason_n2a(int id, char *buf, int len)
	738	{
	739	if (id < 0 \|\| id >= PROTODOWN_REASON_NUM_BITS)
	740	return -1;
	741
	742	if (numeric) {
	743	snprintf(buf, len, "%d", id);
	744	return 0;
	745	}
	746
	747	if (!protodown_reason_init)
	748	protodown_reason_initialize();
	749
	750	if (protodown_reason_tab[id])
	751	snprintf(buf, len, "%s", protodown_reason_tab[id]);
	752	else
	753	snprintf(buf, len, "%d", id);
	754
	755	return 0;
	756	}
	757
	758	int protodown_reason_a2n(__u32 id, const char arg)
	759	{
	760	static char *cache;
761	static unsigned long res;
762	char *end;
763	int i;
764
765	if (cache && strcmp(cache, arg) == 0) {
766	*id = res;
767	return 0;
768	}
769
770	if (!protodown_reason_init)
771	protodown_reason_initialize();
772
773	for (i = 0; i < PROTODOWN_REASON_NUM_BITS; i++) {
774	if (protodown_reason_tab[i] &&
775	strcmp(protodown_reason_tab[i], arg) == 0) {
776	cache = protodown_reason_tab[i];
777	res = i;
778	*id = res;
779	return 0;
780	}
781	}
782
783	res = strtoul(arg, &end, 0);
784	if (!end \|\| end == arg \|\| *end \|\| res >= PROTODOWN_REASON_NUM_BITS)
785	return -1;
786	*id = res;
787	return 0;
788	}