parser.c

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Author : claudio
Date : 2020-05-12 13:26:02
Hash : 4a72491b
Message : Remove unused token BULK and for PREFIX and ADDRESS the table value is always NULL so there is no need to change action in those cases. This was used some time ago by the show rib code. OK kn@, sthen@, benno@, deraadt@
usr.sbin/bgpctl/parser.c
/*	$OpenBSD: parser.c,v 1.104 2020/05/12 13:26:02 claudio Exp $ */

/*
 * Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
 * Copyright (c) 2016 Job Snijders <job@instituut.net>
 * Copyright (c) 2016 Peter Hessler <phessler@openbsd.org>
 *
 * Permission to use, copy, modify, and distribute this software for any
 * purpose with or without fee is hereby granted, provided that the above
 * copyright notice and this permission notice appear in all copies.
 *
 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */

#include <sys/types.h>

#include <endian.h>
#include <err.h>
#include <errno.h>
#include <fcntl.h>
#include <limits.h>
#include <netdb.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>

#include "parser.h"

enum token_type {
	NOTOKEN,
	ENDTOKEN,
	KEYWORD,
	ADDRESS,
	PEERADDRESS,
	FLAG,
	ASNUM,
	ASTYPE,
	PREFIX,
	PEERDESC,
	GROUPDESC,
	RIBNAME,
	COMMUNICATION,
	COMMUNITY,
	EXTCOMMUNITY,
	EXTCOM_SUBTYPE,
	LARGE_COMMUNITY,
	LOCALPREF,
	MED,
	NEXTHOP,
	PFTABLE,
	PREPNBR,
	PREPSELF,
	WEIGHT,
	RD,
	FAMILY,
	RTABLE,
	FILENAME
};

struct token {
	enum token_type		 type;
	const char		*keyword;
	int			 value;
	const struct token	*next;
};

static const struct token t_main[];
static const struct token t_show[];
static const struct token t_show_summary[];
static const struct token t_show_fib[];
static const struct token t_show_rib[];
static const struct token t_show_ovs[];
static const struct token t_show_mrt[];
static const struct token t_show_mrt_file[];
static const struct token t_show_rib_neigh[];
static const struct token t_show_mrt_neigh[];
static const struct token t_show_rib_rib[];
static const struct token t_show_neighbor[];
static const struct token t_show_neighbor_modifiers[];
static const struct token t_fib[];
static const struct token t_neighbor[];
static const struct token t_neighbor_modifiers[];
static const struct token t_show_rib_as[];
static const struct token t_show_mrt_as[];
static const struct token t_show_prefix[];
static const struct token t_show_ip[];
static const struct token t_show_community[];
static const struct token t_show_extcommunity[];
static const struct token t_show_ext_subtype[];
static const struct token t_show_largecommunity[];
static const struct token t_network[];
static const struct token t_network_show[];
static const struct token t_prefix[];
static const struct token t_set[];
static const struct token t_community[];
static const struct token t_extcommunity[];
static const struct token t_ext_subtype[];
static const struct token t_largecommunity[];
static const struct token t_localpref[];
static const struct token t_med[];
static const struct token t_nexthop[];
static const struct token t_pftable[];
static const struct token t_prepnbr[];
static const struct token t_prepself[];
static const struct token t_weight[];
static const struct token t_log[];
static const struct token t_fib_table[];
static const struct token t_show_fib_table[];
static const struct token t_communication[];

static const struct token t_main[] = {
	{ KEYWORD,	"reload",	RELOAD,		t_communication},
	{ KEYWORD,	"show",		SHOW,		t_show},
	{ KEYWORD,	"fib",		FIB,		t_fib},
	{ KEYWORD,	"neighbor",	NEIGHBOR,	t_neighbor},
	{ KEYWORD,	"network",	NONE,		t_network},
	{ KEYWORD,	"log",		NONE,		t_log},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_show[] = {
	{ NOTOKEN,	"",		NONE,		NULL},
	{ KEYWORD,	"fib",		SHOW_FIB,	t_show_fib},
	{ KEYWORD,	"interfaces",	SHOW_INTERFACE,	NULL},
	{ KEYWORD,	"neighbor",	SHOW_NEIGHBOR,	t_show_neighbor},
	{ KEYWORD,	"network",	NETWORK_SHOW,	t_network_show},
	{ KEYWORD,	"nexthop",	SHOW_NEXTHOP,	NULL},
	{ KEYWORD,	"rib",		SHOW_RIB,	t_show_rib},
	{ KEYWORD,	"tables",	SHOW_FIB_TABLES, NULL},
	{ KEYWORD,	"ip",		NONE,		t_show_ip},
	{ KEYWORD,	"summary",	SHOW_SUMMARY,	t_show_summary},
	{ KEYWORD,	"mrt",		SHOW_MRT,	t_show_mrt},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_show_summary[] = {
	{ NOTOKEN,	"",		NONE,			NULL},
	{ KEYWORD,	"terse",	SHOW_SUMMARY_TERSE,	NULL},
	{ ENDTOKEN,	"",		NONE,			NULL}
};

static const struct token t_show_fib[] = {
	{ NOTOKEN,	"",		NONE,		 NULL},
	{ FLAG,		"connected",	F_CONNECTED,	 t_show_fib},
	{ FLAG,		"static",	F_STATIC,	 t_show_fib},
	{ FLAG,		"bgp",		F_BGPD_INSERTED, t_show_fib},
	{ FLAG,		"nexthop",	F_NEXTHOP,	 t_show_fib},
	{ KEYWORD,	"table",	NONE,		 t_show_fib_table},
	{ FAMILY,	"",		NONE,		 t_show_fib},
	{ ADDRESS,	"",		NONE,		 NULL},
	{ ENDTOKEN,	"",		NONE,		 NULL}
};

static const struct token t_show_rib[] = {
	{ NOTOKEN,	"",		NONE,		NULL},
	{ ASTYPE,	"as",		AS_ALL,		t_show_rib_as},
	{ ASTYPE,	"source-as",	AS_SOURCE,	t_show_rib_as},
	{ ASTYPE,	"transit-as",	AS_TRANSIT,	t_show_rib_as},
	{ ASTYPE,	"peer-as",	AS_PEER,	t_show_rib_as},
	{ ASTYPE,	"empty-as",	AS_EMPTY,	t_show_rib},
	{ KEYWORD,	"community",	NONE,		t_show_community},
	{ KEYWORD,	"ext-community", NONE,		t_show_extcommunity},
	{ KEYWORD,	"large-community", NONE,	t_show_largecommunity},
	{ FLAG,		"best",		F_CTL_ACTIVE,	t_show_rib},
	{ FLAG,		"selected",	F_CTL_ACTIVE,	t_show_rib},
	{ FLAG,		"detail",	F_CTL_DETAIL,	t_show_rib},
	{ FLAG,		"error",	F_CTL_INVALID,	t_show_rib},
	{ FLAG,		"ssv"	,	F_CTL_SSV,	t_show_rib},
	{ FLAG,		"in",		F_CTL_ADJ_IN,	t_show_rib},
	{ FLAG,		"out",		F_CTL_ADJ_OUT,	t_show_rib},
	{ KEYWORD,	"neighbor",	NONE,		t_show_rib_neigh},
	{ KEYWORD,	"table",	NONE,		t_show_rib_rib},
	{ KEYWORD,	"summary",	SHOW_SUMMARY,	t_show_summary},
	{ KEYWORD,	"memory",	SHOW_RIB_MEM,	NULL},
	{ KEYWORD,	"ovs",		NONE,		t_show_ovs},
	{ FAMILY,	"",		NONE,		t_show_rib},
	{ PREFIX,	"",		NONE,		t_show_prefix},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_show_ovs[] = {
	{ FLAG,		"valid"	,	F_CTL_OVS_VALID,	t_show_rib},
	{ FLAG,		"invalid",	F_CTL_OVS_INVALID,	t_show_rib},
	{ FLAG,		"not-found",	F_CTL_OVS_NOTFOUND,	t_show_rib},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_show_mrt[] = {
	{ NOTOKEN,	"",		NONE,		NULL},
	{ ASTYPE,	"as",		AS_ALL,		t_show_mrt_as},
	{ ASTYPE,	"source-as",	AS_SOURCE,	t_show_mrt_as},
	{ ASTYPE,	"transit-as",	AS_TRANSIT,	t_show_mrt_as},
	{ ASTYPE,	"peer-as",	AS_PEER,	t_show_mrt_as},
	{ ASTYPE,	"empty-as",	AS_EMPTY,	t_show_mrt},
	{ FLAG,		"detail",	F_CTL_DETAIL,	t_show_mrt},
	{ FLAG,		"ssv",		F_CTL_SSV,	t_show_mrt},
	{ KEYWORD,	"neighbor",	NONE,		t_show_mrt_neigh},
	{ FLAG,		"peers",	F_CTL_NEIGHBORS,t_show_mrt},
	{ KEYWORD,	"file",		NONE,		t_show_mrt_file},
	{ FAMILY,	"",		NONE,		t_show_mrt},
	{ PREFIX,	"",		NONE,		t_show_prefix},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_show_mrt_file[] = {
	{ FILENAME,	"",		NONE,		t_show_mrt},
	{ ENDTOKEN,	"",		NONE,	NULL}
};

static const struct token t_show_rib_neigh_group[] = {
	{ GROUPDESC,	"",		NONE,	t_show_rib},
	{ ENDTOKEN,	"",		NONE,	NULL}
};

static const struct token t_show_rib_neigh[] = {
	{ KEYWORD,	"group",	NONE,	t_show_rib_neigh_group},
	{ PEERADDRESS,	"",		NONE,	t_show_rib},
	{ PEERDESC,	"",		NONE,	t_show_rib},
	{ ENDTOKEN,	"",		NONE,	NULL}
};

static const struct token t_show_mrt_neigh[] = {
	{ PEERADDRESS,	"",		NONE,	t_show_mrt},
	{ ENDTOKEN,	"",		NONE,	NULL}
};

static const struct token t_show_rib_rib[] = {
	{ RIBNAME,	"",		NONE,	t_show_rib},
	{ ENDTOKEN,	"",		NONE,	NULL}
};

static const struct token t_show_neighbor_modifiers[] = {
	{ NOTOKEN,	"",		NONE,			NULL},
	{ KEYWORD,	"timers",	SHOW_NEIGHBOR_TIMERS,	NULL},
	{ KEYWORD,	"messages",	SHOW_NEIGHBOR,		NULL},
	{ KEYWORD,	"terse",	SHOW_NEIGHBOR_TERSE,	NULL},
	{ ENDTOKEN,	"",		NONE,			NULL}
};

static const struct token t_show_neighbor_group[] = {
	{ GROUPDESC,	"",		NONE,	t_show_neighbor_modifiers},
	{ ENDTOKEN,	"",		NONE,	NULL}
};

static const struct token t_show_neighbor[] = {
	{ NOTOKEN,	"",		NONE,	NULL},
	{ KEYWORD,	"group",	NONE,	t_show_neighbor_group},
	{ PEERADDRESS,	"",		NONE,	t_show_neighbor_modifiers},
	{ PEERDESC,	"",		NONE,	t_show_neighbor_modifiers},
	{ ENDTOKEN,	"",		NONE,	NULL}
};

static const struct token t_fib[] = {
	{ KEYWORD,	"couple",	FIB_COUPLE,	NULL},
	{ KEYWORD,	"decouple",	FIB_DECOUPLE,	NULL},
	{ KEYWORD,	"table",	NONE,		t_fib_table},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_neighbor_group[] = {
	{ GROUPDESC,	"",		NONE,		t_neighbor_modifiers},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_neighbor[] = {
	{ KEYWORD,	"group",	NONE,		t_neighbor_group},
	{ PEERADDRESS,	"",		NONE,		t_neighbor_modifiers},
	{ PEERDESC,	"",		NONE,		t_neighbor_modifiers},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_communication[] = {
	{ NOTOKEN,	"",		NONE,		NULL},
	{ COMMUNICATION, "",		NONE,		NULL},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_neighbor_modifiers[] = {
	{ KEYWORD,	"up",		NEIGHBOR_UP,		NULL},
	{ KEYWORD,	"down",		NEIGHBOR_DOWN,		t_communication},
	{ KEYWORD,	"clear",	NEIGHBOR_CLEAR,		t_communication},
	{ KEYWORD,	"refresh",	NEIGHBOR_RREFRESH,	NULL},
	{ KEYWORD,	"destroy",	NEIGHBOR_DESTROY,	NULL},
	{ ENDTOKEN,	"",		NONE,			NULL}
};

static const struct token t_show_rib_as[] = {
	{ ASNUM,	"",		NONE,		t_show_rib},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_show_mrt_as[] = {
	{ ASNUM,	"",		NONE,		t_show_mrt},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_show_prefix[] = {
	{ NOTOKEN,	"",		NONE,		NULL},
	{ FLAG,		"all",		F_LONGER,	NULL},
	{ FLAG,		"longer-prefixes", F_LONGER,	NULL},
	{ FLAG,		"or-longer", 	F_LONGER,	NULL},
	{ FLAG,		"or-shorter", 	F_SHORTER,	NULL},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_show_ip[] = {
	{ KEYWORD,	"bgp",		SHOW_RIB,	t_show_rib},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_show_community[] = {
	{ COMMUNITY,	"",		NONE,		t_show_rib},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_show_extcommunity[] = {
	{ EXTCOM_SUBTYPE,	"bdc",		NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"defgw",	NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"esi-lab",	NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"esi-rt",	NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"l2vid",	NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"mac-mob",	NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"odi",		NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"ort",		NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"ori",		NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"ovs",		NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"rt",		NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"soo",		NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"srcas",	NONE,	t_show_ext_subtype},
	{ EXTCOM_SUBTYPE,	"vrfri",	NONE,	t_show_ext_subtype},
	{ ENDTOKEN,	"",	NONE,	NULL}
};

static const struct token t_show_ext_subtype[] = {
	{ EXTCOMMUNITY,	"",	NONE,	t_show_rib},
	{ ENDTOKEN,	"",	NONE,	NULL}
};

static const struct token t_show_largecommunity[] = {
	{ LARGE_COMMUNITY,	"",	NONE,		t_show_rib},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_network[] = {
	{ KEYWORD,	"add",		NETWORK_ADD,	t_prefix},
	{ KEYWORD,	"delete",	NETWORK_REMOVE,	t_prefix},
	{ KEYWORD,	"flush",	NETWORK_FLUSH,	NULL},
	{ KEYWORD,	"show",		NETWORK_SHOW,	t_network_show},
	{ KEYWORD,	"mrt",		NETWORK_MRT,	t_show_mrt},
	{ KEYWORD,	"bulk",		NETWORK_BULK_ADD,	t_set},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_prefix[] = {
	{ PREFIX,	"",		NONE,		t_set},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_network_show[] = {
	{ NOTOKEN,	"",		NONE,			NULL},
	{ FAMILY,	"",		NONE,			NULL},
	{ ENDTOKEN,	"",		NONE,			NULL}
};

static const struct token t_rd[] = {
	{ RD,		"",			NONE,	t_set},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_set[] = {
	{ NOTOKEN,	"",			NONE,	NULL},
	{ KEYWORD,	"community",		NONE,	t_community},
	{ KEYWORD,	"ext-community",	NONE,	t_extcommunity},
	{ KEYWORD,	"large-community",	NONE,	t_largecommunity},
	{ KEYWORD,	"localpref",		NONE,	t_localpref},
	{ KEYWORD,	"med",			NONE,	t_med},
	{ KEYWORD,	"metric",		NONE,	t_med},
	{ KEYWORD,	"nexthop",		NONE,	t_nexthop},
	{ KEYWORD,	"pftable",		NONE,	t_pftable},
	{ KEYWORD,	"prepend-neighbor",	NONE,	t_prepnbr},
	{ KEYWORD,	"prepend-self",		NONE,	t_prepself},
	{ KEYWORD,	"rd",			NONE,	t_rd},
	{ KEYWORD,	"weight",		NONE,	t_weight},
	{ KEYWORD,	"add",			NETWORK_BULK_ADD,	NULL},
	{ KEYWORD,	"delete",		NETWORK_BULK_REMOVE,	NULL},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_community[] = {
	{ COMMUNITY,	"",			NONE,	t_set},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_extcommunity[] = {
	{ EXTCOM_SUBTYPE,	"bdc",		NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"defgw",	NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"esi-lab",	NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"esi-rt",	NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"l2vid",	NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"mac-mob",	NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"odi",		NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"ort",		NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"ori",		NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"ovs",		NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"rt",		NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"soo",		NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"srcas",	NONE,	t_ext_subtype},
	{ EXTCOM_SUBTYPE,	"vrfri",	NONE,	t_ext_subtype},
	{ ENDTOKEN,	"",	NONE,	NULL}
};

static const struct token t_ext_subtype[] = {
	{ EXTCOMMUNITY,	"",	NONE,	t_set},
	{ ENDTOKEN,	"",	NONE,	NULL}
};

static const struct token t_largecommunity[] = {
	{ LARGE_COMMUNITY,	"",		NONE,	t_set},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_localpref[] = {
	{ LOCALPREF,	"",			NONE,	t_set},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_med[] = {
	{ MED,		"",			NONE,	t_set},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_nexthop[] = {
	{ NEXTHOP,	"",			NONE,	t_set},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_pftable[] = {
	{ PFTABLE,	"",			NONE,	t_set},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_prepnbr[] = {
	{ PREPNBR,	"",			NONE,	t_set},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_prepself[] = {
	{ PREPSELF,	"",			NONE,	t_set},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_weight[] = {
	{ WEIGHT,	"",			NONE,	t_set},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_log[] = {
	{ KEYWORD,	"verbose",	LOG_VERBOSE,	NULL},
	{ KEYWORD,	"brief",	LOG_BRIEF,	NULL},
	{ ENDTOKEN,	"",		NONE,		NULL}
};

static const struct token t_fib_table[] = {
	{ RTABLE,	"",			NONE,	t_fib},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static const struct token t_show_fib_table[] = {
	{ RTABLE,	"",			NONE,	t_show_fib},
	{ ENDTOKEN,	"",			NONE,	NULL}
};

static struct parse_result	res;

const struct token	*match_token(int *argc, char **argv[],
			    const struct token []);
void			 show_valid_args(const struct token []);

int	parse_addr(const char *, struct bgpd_addr *);
int	parse_asnum(const char *, size_t, u_int32_t *);
int	parse_number(const char *, struct parse_result *, enum token_type);
void	parsecommunity(struct community *c, int type, char *s);
void	parseextcommunity(struct community *c, const char *t, char *s);
int	parse_nexthop(const char *, struct parse_result *);

struct parse_result *
parse(int argc, char *argv[])
{
	const struct token	*table = t_main;
	const struct token	*match;

	bzero(&res, sizeof(res));
	res.rtableid = getrtable();
	TAILQ_INIT(&res.set);

	while (argc >= 0) {
		if ((match = match_token(&argc, &argv, table)) == NULL) {
			fprintf(stderr, "valid commands/args:\n");
			show_valid_args(table);
			return (NULL);
		}

		argc--;
		argv++;

		if (match->type == NOTOKEN || match->next == NULL)
			break;

		table = match->next;
	}

	if (argc > 0) {
		fprintf(stderr, "superfluous argument: %s\n", argv[0]);
		return (NULL);
	}

	return (&res);
}

const struct token *
match_token(int *argc, char **argv[], const struct token table[])
{
	u_int			 i, match;
	const struct token	*t = NULL;
	struct filter_set	*fs;
	const char		*word = *argv[0];
	size_t			wordlen = 0;

	match = 0;
	if (word != NULL)
		wordlen = strlen(word);
	for (i = 0; table[i].type != ENDTOKEN; i++) {
		switch (table[i].type) {
		case NOTOKEN:
			if (word == NULL || wordlen == 0) {
				match++;
				t = &table[i];
			}
			break;
		case KEYWORD:
			if (word != NULL && strncmp(word, table[i].keyword,
			    wordlen) == 0) {
				match++;
				t = &table[i];
				if (t->value)
					res.action = t->value;
			}
			break;
		case FLAG:
			if (word != NULL && strncmp(word, table[i].keyword,
			    wordlen) == 0) {
				match++;
				t = &table[i];
				res.flags |= t->value;
			}
			break;
		case FAMILY:
			if (word == NULL)
				break;
			if (!strcmp(word, "inet") ||
			    !strcasecmp(word, "IPv4")) {
				match++;
				t = &table[i];
				res.aid = AID_INET;
			}
			if (!strcmp(word, "inet6") ||
			    !strcasecmp(word, "IPv6")) {
				match++;
				t = &table[i];
				res.aid = AID_INET6;
			}
			if (!strcasecmp(word, "VPNv4")) {
				match++;
				t = &table[i];
				res.aid = AID_VPN_IPv4;
			}
			if (!strcasecmp(word, "VPNv6")) {
				match++;
				t = &table[i];
				res.aid = AID_VPN_IPv6;
			}
			break;
		case ADDRESS:
			if (parse_addr(word, &res.addr)) {
				match++;
				t = &table[i];
			}
			break;
		case PEERADDRESS:
			if (parse_addr(word, &res.peeraddr)) {
				match++;
				t = &table[i];
			}
			break;
		case PREFIX:
			if (parse_prefix(word, wordlen, &res.addr, &res.prefixlen)) {
				match++;
				t = &table[i];
			}
			break;
		case ASTYPE:
			if (word != NULL && strncmp(word, table[i].keyword,
			    wordlen) == 0) {
				match++;
				t = &table[i];
				res.as.type = t->value;
			}
			break;
		case ASNUM:
			if (parse_asnum(word, wordlen, &res.as.as_min)) {
				res.as.as_max = res.as.as_min;
				match++;
				t = &table[i];
			}
			break;
		case GROUPDESC:
			res.is_group = 1;
			/* FALLTHROUGH */
		case PEERDESC:
			if (!match && word != NULL && wordlen > 0) {
				if (strlcpy(res.peerdesc, word,
				    sizeof(res.peerdesc)) >=
				    sizeof(res.peerdesc))
					errx(1, "neighbor description too "
					    "long");
				match++;
				t = &table[i];
			}
			break;
		case RIBNAME:
			if (!match && word != NULL && wordlen > 0) {
				if (strlcpy(res.rib, word, sizeof(res.rib)) >=
				    sizeof(res.rib))
					errx(1, "rib name too long");
				match++;
				t = &table[i];
			}
			break;
		case COMMUNICATION:
			if (!match && word != NULL && wordlen > 0) {
				if (strlcpy(res.reason, word,
				    sizeof(res.reason)) >=
				    sizeof(res.reason))
					errx(1, "shutdown reason too long");
				match++;
				t = &table[i];
			}
			break;
		case COMMUNITY:
		case LARGE_COMMUNITY:
			if (word != NULL && wordlen > 0) {
				int type = COMMUNITY_TYPE_BASIC;
				char *p = strdup(word);

				if (p == NULL)
					err(1, NULL);
				if (table[i].type == LARGE_COMMUNITY)
					type = COMMUNITY_TYPE_LARGE;
				parsecommunity(&res.community, type, p);
				free(p);

				if ((fs = calloc(1, sizeof(*fs))) == NULL)
					err(1, NULL);
				fs->type = ACTION_SET_COMMUNITY;
				fs->action.community = res.community;
				TAILQ_INSERT_TAIL(&res.set, fs, entry);

				match++;
				t = &table[i];
			}
			break;
		case EXTCOM_SUBTYPE:
			if (word != NULL && strncmp(word, table[i].keyword,
			    wordlen) == 0) {
				res.ext_comm_subtype = table[i].keyword;
				match++;
				t = &table[i];
			}
			break;
		case EXTCOMMUNITY:
			if (word != NULL && wordlen > 0) {
				char *p = strdup(word);

				if (p == NULL)
					err(1, NULL);
				parseextcommunity(&res.community,
				    res.ext_comm_subtype, p);
				free(p);

				if ((fs = calloc(1, sizeof(*fs))) == NULL)
					err(1, NULL);
				fs->type = ACTION_SET_COMMUNITY;
				fs->action.community = res.community;
				TAILQ_INSERT_TAIL(&res.set, fs, entry);

				match++;
				t = &table[i];
			}
			break;
		case RD:
			if (word != NULL && wordlen > 0) {
				char *p = strdup(word);
				struct community ext;
				u_int64_t rd;

				if (p == NULL)
					err(1, NULL);
				parseextcommunity(&ext, "rt", p);
				free(p);

				switch (ext.data3 >> 8) {
				case EXT_COMMUNITY_TRANS_TWO_AS:
					rd = (0ULL << 48);
					rd |= ((u_int64_t)ext.data1 & 0xffff)
					    << 32;
					rd |= (u_int64_t)ext.data2;
				break;
				case EXT_COMMUNITY_TRANS_IPV4:
					rd = (1ULL << 48);
					rd |= (u_int64_t)ext.data1 << 16;
					rd |= (u_int64_t)ext.data2 & 0xffff;
					break;
				case EXT_COMMUNITY_TRANS_FOUR_AS:
					rd = (2ULL << 48);
					rd |= (u_int64_t)ext.data1 << 16;
					rd |= (u_int64_t)ext.data2 & 0xffff;
					break;
				default:
					errx(1, "bad encoding of rd");
				}
				res.rd = htobe64(rd);
				match++;
				t = &table[i];
			}
			break;
		case LOCALPREF:
		case MED:
		case PREPNBR:
		case PREPSELF:
		case WEIGHT:
		case RTABLE:
			if (word != NULL && wordlen > 0 &&
			    parse_number(word, &res, table[i].type)) {
				match++;
				t = &table[i];
			}
			break;
		case NEXTHOP:
			if (word != NULL && wordlen > 0 &&
			    parse_nexthop(word, &res)) {
				match++;
				t = &table[i];
			}
			break;
		case PFTABLE:
			if (word != NULL && wordlen > 0) {
				if ((fs = calloc(1,
				    sizeof(struct filter_set))) == NULL)
					err(1, NULL);
				if (strlcpy(fs->action.pftable, word,
				    sizeof(fs->action.pftable)) >=
				    sizeof(fs->action.pftable))
					errx(1, "pftable name too long");
				TAILQ_INSERT_TAIL(&res.set, fs, entry);
				match++;
				t = &table[i];
			}
			break;
		case FILENAME:
			if (word != NULL && wordlen > 0) {
				if ((res.mrtfd = open(word, O_RDONLY)) == -1) {
					/*
					 * ignore error if path has no / and
					 * does not exist. In hope to print
					 * usage.
					 */
					if (errno == ENOENT &&
					    !strchr(word, '/'))
						break;
					err(1, "mrt open(%s)", word);
				}
				match++;
				t = &table[i];
			}
			break;
		case ENDTOKEN:
			break;
		}
	}

	if (match != 1) {
		if (word == NULL)
			fprintf(stderr, "missing argument:\n");
		else if (match > 1)
			fprintf(stderr, "ambiguous argument: %s\n", word);
		else if (match < 1)
			fprintf(stderr, "unknown argument: %s\n", word);
		return (NULL);
	}

	return (t);
}

void
show_valid_args(const struct token table[])
{
	int	i;

	for (i = 0; table[i].type != ENDTOKEN; i++) {
		switch (table[i].type) {
		case NOTOKEN:
			fprintf(stderr, "  <cr>\n");
			break;
		case KEYWORD:
		case FLAG:
		case ASTYPE:
		case EXTCOM_SUBTYPE:
			fprintf(stderr, "  %s\n", table[i].keyword);
			break;
		case ADDRESS:
		case PEERADDRESS:
			fprintf(stderr, "  <address>\n");
			break;
		case PREFIX:
			fprintf(stderr, "  <address>[/<len>]\n");
			break;
		case ASNUM:
			fprintf(stderr, "  <asnum>\n");
			break;
		case GROUPDESC:
		case PEERDESC:
			fprintf(stderr, "  <neighbor description>\n");
			break;
		case RIBNAME:
			fprintf(stderr, "  <rib name>\n");
			break;
		case COMMUNICATION:
			fprintf(stderr, "  <reason>\n");
			break;
		case COMMUNITY:
			fprintf(stderr, "  <community>\n");
			break;
		case LARGE_COMMUNITY:
			fprintf(stderr, "  <large-community>\n");
			break;
		case EXTCOMMUNITY:
			fprintf(stderr, "  <extended-community>\n");
			break;
		case RD:
			fprintf(stderr, "  <route-distinguisher>\n");
			break;
		case LOCALPREF:
		case MED:
		case PREPNBR:
		case PREPSELF:
		case WEIGHT:
			fprintf(stderr, "  <number>\n");
			break;
		case RTABLE:
			fprintf(stderr, "  <rtableid>\n");
			break;
		case NEXTHOP:
			fprintf(stderr, "  <address>\n");
			break;
		case PFTABLE:
			fprintf(stderr, "  <pftable>\n");
			break;
		case FAMILY:
			fprintf(stderr, "  [ inet | inet6 | IPv4 | IPv6 | "
			    "VPNv4 | VPNv6 ]\n");
			break;
		case FILENAME:
			fprintf(stderr, "  <filename>\n");
			break;
		case ENDTOKEN:
			break;
		}
	}
}

int
parse_addr(const char *word, struct bgpd_addr *addr)
{
	struct in_addr	ina;
	struct addrinfo	hints, *r;

	if (word == NULL)
		return (0);

	bzero(addr, sizeof(struct bgpd_addr));
	bzero(&ina, sizeof(ina));

	if (inet_net_pton(AF_INET, word, &ina, sizeof(ina)) != -1) {
		addr->aid = AID_INET;
		addr->v4 = ina;
		return (1);
	}

	bzero(&hints, sizeof(hints));
	hints.ai_family = AF_INET6;
	hints.ai_socktype = SOCK_DGRAM; /*dummy*/
	hints.ai_flags = AI_NUMERICHOST;
	if (getaddrinfo(word, "0", &hints, &r) == 0) {
		sa2addr(r->ai_addr, addr, NULL);
		freeaddrinfo(r);
		return (1);
	}

	return (0);
}

int
parse_prefix(const char *word, size_t wordlen, struct bgpd_addr *addr, u_int8_t *prefixlen)
{
	char		*p, *ps;
	const char	*errstr;
	int		 mask = -1;

	if (word == NULL)
		return (0);

	bzero(addr, sizeof(struct bgpd_addr));

	if ((p = strrchr(word, '/')) != NULL) {
		size_t plen = strlen(p);
		mask = strtonum(p + 1, 0, 128, &errstr);
		if (errstr)
			errx(1, "netmask %s", errstr);

		if ((ps = malloc(wordlen - plen + 1)) == NULL)
			err(1, "parse_prefix: malloc");
		strlcpy(ps, word, wordlen - plen + 1);

		if (parse_addr(ps, addr) == 0) {
			free(ps);
			return (0);
		}

		free(ps);
	} else
		if (parse_addr(word, addr) == 0)
			return (0);

	switch (addr->aid) {
	case AID_INET:
		if (mask == -1)
			mask = 32;
		if (mask > 32)
			errx(1, "invalid netmask: too large");
		addr->v4.s_addr = addr->v4.s_addr & htonl(prefixlen2mask(mask));
		break;
	case AID_INET6:
		if (mask == -1)
			mask = 128;
		inet6applymask(&addr->v6, &addr->v6, mask);
		break;
	default:
		return (0);
	}

	*prefixlen = mask;
	return (1);
}

int
parse_asnum(const char *word, size_t wordlen, u_int32_t *asnum)
{
	const char	*errstr;
	char		*dot, *parseword;
	u_int32_t	 uval, uvalh = 0;

	if (word == NULL)
		return (0);

	if (wordlen < 1 || word[0] < '0' || word[0] > '9')
		return (0);

	parseword = strdup(word);
	if ((dot = strchr(parseword, '.')) != NULL) {
		*dot++ = '\0';
		uvalh = strtonum(parseword, 0, USHRT_MAX, &errstr);
		if (errstr)
			errx(1, "AS number is %s: %s", errstr, word);
		uval = strtonum(dot, 0, USHRT_MAX, &errstr);
		if (errstr)
			errx(1, "AS number is %s: %s", errstr, word);
	} else {
		uval = strtonum(parseword, 0, UINT_MAX, &errstr);
		if (errstr)
			errx(1, "AS number is %s: %s", errstr, word);
	}

	free(parseword);
	*asnum = uval | (uvalh << 16);
	return (1);
}

int
parse_number(const char *word, struct parse_result *r, enum token_type type)
{
	struct filter_set	*fs;
	const char		*errstr;
	u_int			 uval;

	if (word == NULL)
		return (0);

	uval = strtonum(word, 0, UINT_MAX, &errstr);
	if (errstr)
		errx(1, "number is %s: %s", errstr, word);

	/* number was parseable */
	if (type == RTABLE) {
		r->rtableid = uval;
		return (1);
	}

	if ((fs = calloc(1, sizeof(struct filter_set))) == NULL)
		err(1, NULL);
	switch (type) {
	case LOCALPREF:
		fs->type = ACTION_SET_LOCALPREF;
		fs->action.metric = uval;
		break;
	case MED:
		fs->type = ACTION_SET_MED;
		fs->action.metric = uval;
		break;
	case PREPNBR:
		if (uval > 128) {
			free(fs);
			return (0);
		}
		fs->type = ACTION_SET_PREPEND_PEER;
		fs->action.prepend = uval;
		break;
	case PREPSELF:
		if (uval > 128) {
			free(fs);
			return (0);
		}
		fs->type = ACTION_SET_PREPEND_SELF;
		fs->action.prepend = uval;
		break;
	case WEIGHT:
		fs->type = ACTION_SET_WEIGHT;
		fs->action.metric = uval;
		break;
	default:
		errx(1, "king bula sez bad things happen");
	}

	TAILQ_INSERT_TAIL(&r->set, fs, entry);
	return (1);
}

static void
getcommunity(char *s, int large, u_int32_t *val, u_int32_t *flag)
{
	long long	 max = USHRT_MAX;
	const char	*errstr;

	*flag = 0;
	*val = 0;
	if (strcmp(s, "*") == 0) {
		*flag = COMMUNITY_ANY;
		return;
	} else if (strcmp(s, "neighbor-as") == 0) {
		*flag = COMMUNITY_NEIGHBOR_AS;
		return;
	} else if (strcmp(s, "local-as") == 0) {
		*flag =  COMMUNITY_LOCAL_AS;
		return;
	}
	if (large)
		max = UINT_MAX;
	*val = strtonum(s, 0, max, &errstr);
	if (errstr)
		errx(1, "Community %s is %s (max: %llu)", s, errstr, max);
}

static void
setcommunity(struct community *c, u_int32_t as, u_int32_t data,
    u_int32_t asflag, u_int32_t dataflag)
{
	c->flags = COMMUNITY_TYPE_BASIC;
	c->flags |= asflag << 8;
	c->flags |= dataflag << 16;
	c->data1 = as;
	c->data2 = data;
	c->data3 = 0;
}

static void
parselargecommunity(struct community *c, char *s)
{
	char *p, *q;
	u_int32_t dflag1, dflag2, dflag3;

	if ((p = strchr(s, ':')) == NULL)
		errx(1, "Bad community syntax");
	*p++ = 0;

	if ((q = strchr(p, ':')) == NULL)
		errx(1, "Bad community syntax");
	*q++ = 0;

	getcommunity(s, 1, &c->data1, &dflag1);
	getcommunity(p, 1, &c->data2, &dflag2);
	getcommunity(q, 1, &c->data3, &dflag3);

	c->flags = COMMUNITY_TYPE_LARGE;
	c->flags |= dflag1 << 8;
	c->flags |= dflag2 << 16;
	c->flags |= dflag3 << 24;
}

void
parsecommunity(struct community *c, int type, char *s)
{
	char *p;
	u_int32_t as, data, asflag, dataflag;

	if (type == COMMUNITY_TYPE_LARGE) {
		parselargecommunity(c, s);
		return;
	}

	/* Well-known communities */
	if (strcasecmp(s, "GRACEFUL_SHUTDOWN") == 0) {
		setcommunity(c, COMMUNITY_WELLKNOWN,
		    COMMUNITY_GRACEFUL_SHUTDOWN, 0, 0);
		return;
	} else if (strcasecmp(s, "NO_EXPORT") == 0) {
		setcommunity(c, COMMUNITY_WELLKNOWN,
		    COMMUNITY_NO_EXPORT, 0, 0);
		return;
	} else if (strcasecmp(s, "NO_ADVERTISE") == 0) {
		setcommunity(c, COMMUNITY_WELLKNOWN,
		    COMMUNITY_NO_ADVERTISE, 0, 0);
		return;
	} else if (strcasecmp(s, "NO_EXPORT_SUBCONFED") == 0) {
		setcommunity(c, COMMUNITY_WELLKNOWN,
		    COMMUNITY_NO_EXPSUBCONFED, 0, 0);
		return;
	} else if (strcasecmp(s, "NO_PEER") == 0) {
		setcommunity(c, COMMUNITY_WELLKNOWN,
		    COMMUNITY_NO_PEER, 0, 0);
		return;
	} else if (strcasecmp(s, "BLACKHOLE") == 0) {
		setcommunity(c, COMMUNITY_WELLKNOWN,
		    COMMUNITY_BLACKHOLE, 0, 0);
		return;
	}

	if ((p = strchr(s, ':')) == NULL)
		errx(1, "Bad community syntax");
	*p++ = 0;

	getcommunity(s, 0, &as, &asflag);
	getcommunity(p, 0, &data, &dataflag);
	setcommunity(c, as, data, asflag, dataflag);
}

static int
parsesubtype(const char *name, int *type, int *subtype)
{
	const struct ext_comm_pairs *cp;
	int found = 0;

	for (cp = iana_ext_comms; cp->subname != NULL; cp++) {
		if (strcmp(name, cp->subname) == 0) {
			if (found == 0) {
				*type = cp->type;
				*subtype = cp->subtype;
			}
			found++;
		}
	}
	if (found > 1)
		*type = -1;
	return (found);
}

static int
parseextvalue(int type, char *s, u_int32_t *v, u_int32_t *flag)
{
	const char	*errstr;
	char		*p;
	struct in_addr	 ip;
	u_int32_t	 uvalh, uval;

	if (type != -1) {
		/* nothing */
	} else if (strcmp(s, "neighbor-as") == 0) {
		*flag = COMMUNITY_NEIGHBOR_AS;
		*v = 0;
		return EXT_COMMUNITY_TRANS_FOUR_AS;
	} else if (strcmp(s, "local-as") == 0) {
		*flag = COMMUNITY_LOCAL_AS;
		*v = 0;
		return EXT_COMMUNITY_TRANS_FOUR_AS;
	} else if ((p = strchr(s, '.')) == NULL) {
		/* AS_PLAIN number (4 or 2 byte) */
		strtonum(s, 0, USHRT_MAX, &errstr);
		if (errstr == NULL)
			type = EXT_COMMUNITY_TRANS_TWO_AS;
		else
			type = EXT_COMMUNITY_TRANS_FOUR_AS;
	} else if (strchr(p + 1, '.') == NULL) {
		/* AS_DOT number (4-byte) */
		type = EXT_COMMUNITY_TRANS_FOUR_AS;
	} else {
		/* more than one dot -> IP address */
		type = EXT_COMMUNITY_TRANS_IPV4;
	}

	switch (type) {
	case EXT_COMMUNITY_TRANS_TWO_AS:
		uval = strtonum(s, 0, USHRT_MAX, &errstr);
		if (errstr)
			errx(1, "Bad ext-community %s is %s", s, errstr);
		*v = uval;
		break;
	case EXT_COMMUNITY_TRANS_FOUR_AS:
		if ((p = strchr(s, '.')) == NULL) {
			uval = strtonum(s, 0, UINT_MAX, &errstr);
			if (errstr)
				errx(1, "Bad ext-community %s is %s", s,
				    errstr);
			*v = uval;
			break;
		}
		*p++ = '\0';
		uvalh = strtonum(s, 0, USHRT_MAX, &errstr);
		if (errstr)
			errx(1, "Bad ext-community %s is %s", s, errstr);
		uval = strtonum(p, 0, USHRT_MAX, &errstr);
		if (errstr)
			errx(1, "Bad ext-community %s is %s", p, errstr);
		*v = uval | (uvalh << 16);
		break;
	case EXT_COMMUNITY_TRANS_IPV4:
		if (inet_aton(s, &ip) == 0)
			errx(1, "Bad ext-community %s not parseable", s);
		*v = ntohl(ip.s_addr);
		break;
	default:
		errx(1, "%s: unexpected type %d", __func__, type);
	}
	return (type);
}

void
parseextcommunity(struct community *c, const char *t, char *s)
{
	const struct ext_comm_pairs *cp;
	char		*p, *ep;
	u_int64_t	 ullval;
	u_int32_t	 uval, uval2, dflag1 = 0, dflag2 = 0;
	int		 type = 0, subtype = 0;

	if (strcmp(t, "*") == 0 && strcmp(s, "*") == 0) {
		c->flags = COMMUNITY_TYPE_EXT;
		c->flags |= COMMUNITY_ANY << 24;
		return;
	}
	if (parsesubtype(t, &type, &subtype) == 0)
		errx(1, "Bad ext-community unknown type");

	switch (type) {
	case EXT_COMMUNITY_TRANS_TWO_AS:
	case EXT_COMMUNITY_TRANS_FOUR_AS:
	case EXT_COMMUNITY_TRANS_IPV4:
	case -1:
		if (strcmp(s, "*") == 0) {
			dflag1 = COMMUNITY_ANY;
			break;
		}
		if ((p = strchr(s, ':')) == NULL)
			errx(1, "Bad ext-community %s", s);
		*p++ = '\0';
		type = parseextvalue(type, s, &uval, &dflag1);

		switch (type) {
		case EXT_COMMUNITY_TRANS_TWO_AS:
			getcommunity(p, 1, &uval2, &dflag2);
			break;
		case EXT_COMMUNITY_TRANS_IPV4:
		case EXT_COMMUNITY_TRANS_FOUR_AS:
			getcommunity(p, 0, &uval2, &dflag2);
			break;
		default:
			errx(1, "parseextcommunity: unexpected result");
		}

		c->data1 = uval;
		c->data2 = uval2;
		break;
	case EXT_COMMUNITY_TRANS_OPAQUE:
	case EXT_COMMUNITY_TRANS_EVPN:
		if (strcmp(s, "*") == 0) {
			dflag1 = COMMUNITY_ANY;
			break;
		}
		errno = 0;
		ullval = strtoull(s, &ep, 0);
		if (s[0] == '\0' || *ep != '\0')
			errx(1, "Bad ext-community bad value");
		if (errno == ERANGE && ullval > EXT_COMMUNITY_OPAQUE_MAX)
			errx(1, "Bad ext-community value too big");
		c->data1 = ullval >> 32;
		c->data2 = ullval;
		break;
	case EXT_COMMUNITY_NON_TRANS_OPAQUE:
		if (subtype == EXT_COMMUNITY_SUBTYPE_OVS) {
			if (strcmp(s, "valid") == 0) {
				c->data2 = EXT_COMMUNITY_OVS_VALID;
				break;
			} else if (strcmp(s, "invalid") == 0) {
				c->data2 = EXT_COMMUNITY_OVS_INVALID;
				break;
			} else if (strcmp(s, "not-found") == 0) {
				c->data2 = EXT_COMMUNITY_OVS_NOTFOUND;
				break;
			} else if (strcmp(s, "*") == 0) {
				dflag1 = COMMUNITY_ANY;
				break;
			}
		}
		errx(1, "Bad ext-community %s", s);
	}

	c->data3 = type << 8 | subtype;

	/* special handling of ext-community rt * since type is not known */
	if (dflag1 == COMMUNITY_ANY && type == -1) {
		c->flags = COMMUNITY_TYPE_EXT;
		c->flags |= dflag1 << 8;
		return;
	}

	/* verify type/subtype combo */
	for (cp = iana_ext_comms; cp->subname != NULL; cp++) {
		if (cp->type == type && cp->subtype == subtype) {
			c->flags = COMMUNITY_TYPE_EXT;
			c->flags |= dflag1 << 8;
			c->flags |= dflag2 << 16;
			return;
		}
	}

	errx(1, "Bad ext-community bad format for type");
}

int
parse_nexthop(const char *word, struct parse_result *r)
{
	struct filter_set	*fs;

	if ((fs = calloc(1, sizeof(struct filter_set))) == NULL)
		err(1, NULL);

	if (strcmp(word, "blackhole") == 0)
		fs->type = ACTION_SET_NEXTHOP_BLACKHOLE;
	else if (strcmp(word, "reject") == 0)
		fs->type = ACTION_SET_NEXTHOP_REJECT;
	else if (strcmp(word, "no-modify") == 0)
		fs->type = ACTION_SET_NEXTHOP_NOMODIFY;
	else if (parse_addr(word, &fs->action.nexthop)) {
		fs->type = ACTION_SET_NEXTHOP;
	} else {
		free(fs);
		return (0);
	}

	TAILQ_INSERT_TAIL(&r->set, fs, entry);
	return (1);
}
IABSD.fr/src/usr.sbin/bgpctl/parser.c

Commit

IABSD.fr/src /usr.sbin/bgpctl/parser.c
