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GCC Code Coverage Report

Directory:	./		Exec	Total	Coverage
File:	usr.sbin/ikectl/parser.c	Lines:	0	74	0.0 %
Date:	2017-11-07	Branches:	0	72	0.0 %


/*	$OpenBSD: parser.c,v 1.16 2016/06/14 13:45:40 reyk Exp $	*/

/*
 * Copyright (c) 2010-2013 Reyk Floeter <reyk@openbsd.org>
 * Copyright (c) 2004 Esben Norby <norby@openbsd.org>
 * Copyright (c) 2003, 2004 Henning Brauer <henning@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 <sys/socket.h>
#include <sys/queue.h>
#include <sys/tree.h>

#include <err.h>
#include <errno.h>
#include <limits.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <event.h>
#include <netdb.h>

#include "iked.h"
#include "parser.h"

enum token_type {
	NOTOKEN,
	ENDTOKEN,
	KEYWORD,
	PATH,
	CANAME,
	PEER,
	ADDRESS,
	FQDN,
	PASSWORD
};

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_reset[];
static const struct token t_log[];
static const struct token t_load[];
static const struct token t_ca[];
static const struct token t_ca_pass[];
static const struct token t_ca_pass_val[];
static const struct token t_ca_export[];
static const struct token t_ca_ex_peer[];
static const struct token t_ca_ex_pass[];
static const struct token t_ca_modifiers[];
static const struct token t_ca_cert[];
static const struct token t_ca_cert_extusage[];
static const struct token t_ca_cert_modifiers[];
static const struct token t_ca_key[];
static const struct token t_ca_key_modifiers[];
static const struct token t_ca_key_path[];
static const struct token t_show[];
static const struct token t_show_ca[];
static const struct token t_show_ca_modifiers[];
static const struct token t_show_ca_cert[];
static const struct token t_opt_path[];

static const struct token t_main[] = {
	{ KEYWORD,	"active",	ACTIVE,		NULL },
	{ KEYWORD,	"passive",	PASSIVE,	NULL },
	{ KEYWORD,	"couple",	COUPLE,		NULL },
	{ KEYWORD,	"decouple",	DECOUPLE,	NULL },
	{ KEYWORD,	"load",		LOAD,		t_load },
	{ KEYWORD,	"log",		NONE,		t_log },
	{ KEYWORD,	"monitor",	MONITOR,	NULL },
	{ KEYWORD,	"reload",	RELOAD,		NULL },
	{ KEYWORD,	"reset",	NONE,		t_reset },
	{ KEYWORD,	"show",		NONE,		t_show },
	{ KEYWORD,	"ca",		CA,		t_ca },
	{ 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_reset[] = {
	{ KEYWORD,	"all",		RESETALL,	NULL },
	{ KEYWORD,	"ca",		RESETCA,	NULL },
	{ KEYWORD,	"policy",	RESETPOLICY,	NULL },
	{ KEYWORD,	"sa",		RESETSA,	NULL },
	{ KEYWORD,	"user",		RESETUSER,	NULL },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

static const struct token t_load[] = {
	{ PATH,		"",		NONE,		NULL },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

static const struct token t_ca[] = {
	{ CANAME,	"",		NONE,		t_ca_modifiers },
	{ ENDTOKEN,	"",		NONE,		NULL },
};

static const struct token t_ca_modifiers[] = {
	{ KEYWORD,	"create",	CA_CREATE,	t_ca_pass },
	{ KEYWORD,	"delete",	CA_DELETE,	NULL },
	{ KEYWORD,	"install",	CA_INSTALL,	t_opt_path },
	{ KEYWORD,	"certificate",	CA_CERTIFICATE,	t_ca_cert },
	{ KEYWORD,	"key",		NONE,		t_ca_key },
	{ KEYWORD,	"export",	CA_EXPORT,	t_ca_export },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

static const struct token t_ca_pass_val[] = {
	{ PASSWORD,	"",		NONE,		NULL },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

static const struct token t_ca_pass[] = {
	{ NOTOKEN,	"",		NONE,		NULL },
	{ KEYWORD,	"password",	NONE,		t_ca_pass_val },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

static const struct token t_ca_export[] = {
	{ NOTOKEN,	"",		NONE,		NULL },
	{ KEYWORD,	"peer",		NONE,		t_ca_ex_peer },
	{ KEYWORD,	"password",	NONE,		t_ca_ex_pass },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

static const struct token t_ca_ex_peer[] = {
	{ PEER,		"",		NONE,		t_ca_export },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

static const struct token t_ca_ex_pass[] = {
	{ PASSWORD,	"",		NONE,		t_ca_export },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

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

static const struct token t_ca_cert[] = {
	{ ADDRESS,	"",		NONE,		t_ca_cert_modifiers },
	{ FQDN,		"",		NONE,		t_ca_cert_modifiers },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

static const struct token t_ca_cert_modifiers[] = {
	{ KEYWORD,	"create",	CA_CERT_CREATE,		t_ca_cert_extusage },
	{ KEYWORD,	"delete",	CA_CERT_DELETE,		NULL },
	{ KEYWORD,	"install",	CA_CERT_INSTALL,	t_opt_path },
	{ KEYWORD,	"export",	CA_CERT_EXPORT,		t_ca_export },
	{ KEYWORD,	"revoke",	CA_CERT_REVOKE,		NULL },
	{ ENDTOKEN,	"",		NONE,			NULL }
};

static const struct token t_ca_cert_extusage[] = {
	{ NOTOKEN,	"",		NONE,		NULL},
	{ KEYWORD,	"server",	CA_SERVER,	NULL },
	{ KEYWORD,	"client",	CA_CLIENT,	NULL },
	{ KEYWORD,	"ocsp",		CA_OCSP,	NULL },
	{ ENDTOKEN,	"",		NONE,		NULL },
};

static const struct token t_ca_key[] = {
	{ ADDRESS,	"",		NONE,		t_ca_key_modifiers },
	{ FQDN,		"",		NONE,		t_ca_key_modifiers },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

static const struct token t_ca_key_modifiers[] = {
	{ KEYWORD,	"create",	CA_KEY_CREATE,		NULL },
	{ KEYWORD,	"delete",	CA_KEY_DELETE,		NULL },
	{ KEYWORD,	"install",	CA_KEY_INSTALL,		t_opt_path },
	{ KEYWORD,	"import",	CA_KEY_IMPORT,		t_ca_key_path },
	{ ENDTOKEN,	"",		NONE,			NULL }
};

static const struct token t_ca_key_path[] = {
	{ PATH,		"",		NONE,		NULL },
	{ PATH,		"",		NONE,		NULL }
};

static const struct token t_show[] = {
	{ KEYWORD,	"ca",		SHOW_CA,	t_show_ca },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

static const struct token t_show_ca[] = {
	{ CANAME,	"",		NONE,		t_show_ca_modifiers },
	{ ENDTOKEN,	"",		NONE,		NULL },
};

static const struct token t_show_ca_modifiers[] = {
	{ KEYWORD,	"certificates",	SHOW_CA_CERTIFICATES,	t_show_ca_cert },
	{ ENDTOKEN,	"",		NONE,			NULL }
};

static const struct token t_show_ca_cert[] = {
	{ NOTOKEN,	"",		NONE,		NULL },
	{ ADDRESS,	"",		NONE,		NULL },
	{ FQDN,		"",		NONE,		NULL },
	{ ENDTOKEN,	"",		NONE,		NULL }
};

static struct parse_result	 res;

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

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

	bzero(&res, sizeof(res));

	while (argc >= 0) {
		if ((match = match_token(argv[0], 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);
}

int
parse_addr(const char *word)
{
	struct addrinfo hints, *r;

	bzero(&hints, sizeof(hints));
	hints.ai_socktype = SOCK_DGRAM; /* dummy */
	hints.ai_family = PF_UNSPEC;
	hints.ai_flags = AI_NUMERICHOST;
	if (getaddrinfo(word, "0", &hints, &r) == 0) {
		return (0);
	}

	return (1);
}


const struct token *
match_token(char *word, const struct token table[])
{
	unsigned int		 i, match = 0;
	const struct token	*t = NULL;

	for (i = 0; table[i].type != ENDTOKEN; i++) {
		switch (table[i].type) {
		case NOTOKEN:
			if (word == NULL || strlen(word) == 0) {
				match++;
				t = &table[i];
			}
			break;
		case KEYWORD:
			if (word != NULL && strncmp(word, table[i].keyword,
			    strlen(word)) == 0) {
				match++;
				t = &table[i];
				if (t->value)
					res.action = t->value;
			}
			break;
		case PATH:
			if (!match && word != NULL && strlen(word) > 0) {
				res.path = strdup(word);
				match++;
				t = &table[i];
			}
			break;
		case CANAME:
			if (!match && word != NULL && strlen(word) > 0) {
				res.caname = strdup(word);
				match++;
				t = &table[i];
			}
			break;
		case PEER:
			if (!match && word != NULL && strlen(word) > 0) {
				res.peer = strdup(word);
				match++;
				t = &table[i];
			}
			break;
		case ADDRESS:
		case FQDN:
			if (!match && word != NULL && strlen(word) > 0) {
				parse_addr(word);
				res.host = strdup(word);
				if (parse_addr(word) == 0)
					res.htype = HOST_IPADDR;
				else
					res.htype = HOST_FQDN;
				match++;
				t = &table[i];
			}
			break;
		case PASSWORD:
			if (!match && word != NULL && strlen(word) > 0) {
				res.pass = strdup(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:
			fprintf(stderr, "  %s\n", table[i].keyword);
			break;
		case PATH:
			fprintf(stderr, "  <path>\n");
			break;
		case CANAME:
			fprintf(stderr, "  <caname>\n");
			break;
		case PASSWORD:
			fprintf(stderr, "  <password>\n");
			break;
		case PEER:
			fprintf(stderr, "  <peer>\n");
			break;
		case ADDRESS:
			fprintf(stderr, "  <ipaddr>\n");
			break;
		case FQDN:
			fprintf(stderr, "  <fqdn>\n");
			break;
		case ENDTOKEN:
			break;
		}
	}
}


Generated by: GCOVR (Version 3.3)

Line	Branch	Exec	Source
1			/* $OpenBSD: parser.c,v 1.16 2016/06/14 13:45:40 reyk Exp $ */
2
3			/*
4			* Copyright (c) 2010-2013 Reyk Floeter <reyk@openbsd.org>
5			* Copyright (c) 2004 Esben Norby <norby@openbsd.org>
6			* Copyright (c) 2003, 2004 Henning Brauer <henning@openbsd.org>
7			*
8			* Permission to use, copy, modify, and distribute this software for any
9			* purpose with or without fee is hereby granted, provided that the above
10			* copyright notice and this permission notice appear in all copies.
11			*
12			* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
13			* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
14			* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
15			* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
16			* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
17			* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
18			* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
19			*/
20
21			#include <sys/types.h>
22			#include <sys/socket.h>
23			#include <sys/queue.h>
24			#include <sys/tree.h>
25
26			#include <err.h>
27			#include <errno.h>
28			#include <limits.h>
29			#include <stdio.h>
30			#include <stdlib.h>
31			#include <string.h>
32			#include <event.h>
33			#include <netdb.h>
34
35			#include "iked.h"
36			#include "parser.h"
37
38			enum token_type {
39			NOTOKEN,
40			ENDTOKEN,
41			KEYWORD,
42			PATH,
43			CANAME,
44			PEER,
45			ADDRESS,
46			FQDN,
47			PASSWORD
48			};
49
50			struct token {
51			enum token_type type;
52			const char *keyword;
53			int value;
54			const struct token *next;
55			};
56
57			static const struct token t_main[];
58			static const struct token t_reset[];
59			static const struct token t_log[];
60			static const struct token t_load[];
61			static const struct token t_ca[];
62			static const struct token t_ca_pass[];
63			static const struct token t_ca_pass_val[];
64			static const struct token t_ca_export[];
65			static const struct token t_ca_ex_peer[];
66			static const struct token t_ca_ex_pass[];
67			static const struct token t_ca_modifiers[];
68			static const struct token t_ca_cert[];
69			static const struct token t_ca_cert_extusage[];
70			static const struct token t_ca_cert_modifiers[];
71			static const struct token t_ca_key[];
72			static const struct token t_ca_key_modifiers[];
73			static const struct token t_ca_key_path[];
74			static const struct token t_show[];
75			static const struct token t_show_ca[];
76			static const struct token t_show_ca_modifiers[];
77			static const struct token t_show_ca_cert[];
78			static const struct token t_opt_path[];
79
80			static const struct token t_main[] = {
81			{ KEYWORD, "active", ACTIVE, NULL },
82			{ KEYWORD, "passive", PASSIVE, NULL },
83			{ KEYWORD, "couple", COUPLE, NULL },
84			{ KEYWORD, "decouple", DECOUPLE, NULL },
85			{ KEYWORD, "load", LOAD, t_load },
86			{ KEYWORD, "log", NONE, t_log },
87			{ KEYWORD, "monitor", MONITOR, NULL },
88			{ KEYWORD, "reload", RELOAD, NULL },
89			{ KEYWORD, "reset", NONE, t_reset },
90			{ KEYWORD, "show", NONE, t_show },
91			{ KEYWORD, "ca", CA, t_ca },
92			{ ENDTOKEN, "", NONE, NULL }
93			};
94
95			static const struct token t_log[] = {
96			{ KEYWORD, "verbose", LOG_VERBOSE, NULL },
97			{ KEYWORD, "brief", LOG_BRIEF, NULL },
98			{ ENDTOKEN, "", NONE, NULL }
99			};
100
101			static const struct token t_reset[] = {
102			{ KEYWORD, "all", RESETALL, NULL },
103			{ KEYWORD, "ca", RESETCA, NULL },
104			{ KEYWORD, "policy", RESETPOLICY, NULL },
105			{ KEYWORD, "sa", RESETSA, NULL },
106			{ KEYWORD, "user", RESETUSER, NULL },
107			{ ENDTOKEN, "", NONE, NULL }
108			};
109
110			static const struct token t_load[] = {
111			{ PATH, "", NONE, NULL },
112			{ ENDTOKEN, "", NONE, NULL }
113			};
114
115			static const struct token t_ca[] = {
116			{ CANAME, "", NONE, t_ca_modifiers },
117			{ ENDTOKEN, "", NONE, NULL },
118			};
119
120			static const struct token t_ca_modifiers[] = {
121			{ KEYWORD, "create", CA_CREATE, t_ca_pass },
122			{ KEYWORD, "delete", CA_DELETE, NULL },
123			{ KEYWORD, "install", CA_INSTALL, t_opt_path },
124			{ KEYWORD, "certificate", CA_CERTIFICATE, t_ca_cert },
125			{ KEYWORD, "key", NONE, t_ca_key },
126			{ KEYWORD, "export", CA_EXPORT, t_ca_export },
127			{ ENDTOKEN, "", NONE, NULL }
128			};
129
130			static const struct token t_ca_pass_val[] = {
131			{ PASSWORD, "", NONE, NULL },
132			{ ENDTOKEN, "", NONE, NULL }
133			};
134
135			static const struct token t_ca_pass[] = {
136			{ NOTOKEN, "", NONE, NULL },
137			{ KEYWORD, "password", NONE, t_ca_pass_val },
138			{ ENDTOKEN, "", NONE, NULL }
139			};
140
141			static const struct token t_ca_export[] = {
142			{ NOTOKEN, "", NONE, NULL },
143			{ KEYWORD, "peer", NONE, t_ca_ex_peer },
144			{ KEYWORD, "password", NONE, t_ca_ex_pass },
145			{ ENDTOKEN, "", NONE, NULL }
146			};
147
148			static const struct token t_ca_ex_peer[] = {
149			{ PEER, "", NONE, t_ca_export },
150			{ ENDTOKEN, "", NONE, NULL }
151			};
152
153			static const struct token t_ca_ex_pass[] = {
154			{ PASSWORD, "", NONE, t_ca_export },
155			{ ENDTOKEN, "", NONE, NULL }
156			};
157
158			static const struct token t_opt_path[] = {
159			{ NOTOKEN, "", NONE, NULL },
160			{ PATH, "", NONE, NULL },
161			{ ENDTOKEN, "", NONE, NULL }
162			};
163
164			static const struct token t_ca_cert[] = {
165			{ ADDRESS, "", NONE, t_ca_cert_modifiers },
166			{ FQDN, "", NONE, t_ca_cert_modifiers },
167			{ ENDTOKEN, "", NONE, NULL }
168			};
169
170			static const struct token t_ca_cert_modifiers[] = {
171			{ KEYWORD, "create", CA_CERT_CREATE, t_ca_cert_extusage },
172			{ KEYWORD, "delete", CA_CERT_DELETE, NULL },
173			{ KEYWORD, "install", CA_CERT_INSTALL, t_opt_path },
174			{ KEYWORD, "export", CA_CERT_EXPORT, t_ca_export },
175			{ KEYWORD, "revoke", CA_CERT_REVOKE, NULL },
176			{ ENDTOKEN, "", NONE, NULL }
177			};
178
179			static const struct token t_ca_cert_extusage[] = {
180			{ NOTOKEN, "", NONE, NULL},
181			{ KEYWORD, "server", CA_SERVER, NULL },
182			{ KEYWORD, "client", CA_CLIENT, NULL },
183			{ KEYWORD, "ocsp", CA_OCSP, NULL },
184			{ ENDTOKEN, "", NONE, NULL },
185			};
186
187			static const struct token t_ca_key[] = {
188			{ ADDRESS, "", NONE, t_ca_key_modifiers },
189			{ FQDN, "", NONE, t_ca_key_modifiers },
190			{ ENDTOKEN, "", NONE, NULL }
191			};
192
193			static const struct token t_ca_key_modifiers[] = {
194			{ KEYWORD, "create", CA_KEY_CREATE, NULL },
195			{ KEYWORD, "delete", CA_KEY_DELETE, NULL },
196			{ KEYWORD, "install", CA_KEY_INSTALL, t_opt_path },
197			{ KEYWORD, "import", CA_KEY_IMPORT, t_ca_key_path },
198			{ ENDTOKEN, "", NONE, NULL }
199			};
200
201			static const struct token t_ca_key_path[] = {
202			{ PATH, "", NONE, NULL },
203			{ PATH, "", NONE, NULL }
204			};
205
206			static const struct token t_show[] = {
207			{ KEYWORD, "ca", SHOW_CA, t_show_ca },
208			{ ENDTOKEN, "", NONE, NULL }
209			};
210
211			static const struct token t_show_ca[] = {
212			{ CANAME, "", NONE, t_show_ca_modifiers },
213			{ ENDTOKEN, "", NONE, NULL },
214			};
215
216			static const struct token t_show_ca_modifiers[] = {
217			{ KEYWORD, "certificates", SHOW_CA_CERTIFICATES, t_show_ca_cert },
218			{ ENDTOKEN, "", NONE, NULL }
219			};
220
221			static const struct token t_show_ca_cert[] = {
222			{ NOTOKEN, "", NONE, NULL },
223			{ ADDRESS, "", NONE, NULL },
224			{ FQDN, "", NONE, NULL },
225			{ ENDTOKEN, "", NONE, NULL }
226			};
227
228			static struct parse_result res;
229
230			const struct token match_token(char , const struct token []);
231			void show_valid_args(const struct token []);
232			int parse_addr(const char *);
233
234			struct parse_result *
235			parse(int argc, char *argv[])
236			{
237			const struct token *table = t_main;
238			const struct token *match;
239
240			bzero(&res, sizeof(res));
241
242			while (argc >= 0) {
243			if ((match = match_token(argv[0], table)) == NULL) {
244			fprintf(stderr, "valid commands/args:\n");
245			show_valid_args(table);
246			return (NULL);
247			}
248
249			argc--;
250			argv++;
251
252			if (match->type == NOTOKEN \|\| match->next == NULL)
253			break;
254
255			table = match->next;
256			}
257
258			if (argc > 0) {
259			fprintf(stderr, "superfluous argument: %s\n", argv[0]);
260			return (NULL);
261			}
262
263			return (&res);
264			}
265
266			int
267			parse_addr(const char *word)
268			{
269			struct addrinfo hints, *r;
270
271			bzero(&hints, sizeof(hints));
272			hints.ai_socktype = SOCK_DGRAM; /* dummy */
273			hints.ai_family = PF_UNSPEC;
274			hints.ai_flags = AI_NUMERICHOST;
275			if (getaddrinfo(word, "0", &hints, &r) == 0) {
276			return (0);
277			}
278
279			return (1);
280			}
281
282
283			const struct token *
284			match_token(char *word, const struct token table[])
285			{
286			unsigned int i, match = 0;
287			const struct token *t = NULL;
288
289			for (i = 0; table[i].type != ENDTOKEN; i++) {
290			switch (table[i].type) {
291			case NOTOKEN:
292			if (word == NULL \|\| strlen(word) == 0) {
293			match++;
294			t = &table[i];
295			}
296			break;
297			case KEYWORD:
298			if (word != NULL && strncmp(word, table[i].keyword,
299			strlen(word)) == 0) {
300			match++;
301			t = &table[i];
302			if (t->value)
303			res.action = t->value;
304			}
305			break;
306			case PATH:
307			if (!match && word != NULL && strlen(word) > 0) {
308			res.path = strdup(word);
309			match++;
310			t = &table[i];
311			}
312			break;
313			case CANAME:
314			if (!match && word != NULL && strlen(word) > 0) {
315			res.caname = strdup(word);
316			match++;
317			t = &table[i];
318			}
319			break;
320			case PEER:
321			if (!match && word != NULL && strlen(word) > 0) {
322			res.peer = strdup(word);
323			match++;
324			t = &table[i];
325			}
326			break;
327			case ADDRESS:
328			case FQDN:
329			if (!match && word != NULL && strlen(word) > 0) {
330			parse_addr(word);
331			res.host = strdup(word);
332			if (parse_addr(word) == 0)
333			res.htype = HOST_IPADDR;
334			else
335			res.htype = HOST_FQDN;
336			match++;
337			t = &table[i];
338			}
339			break;
340			case PASSWORD:
341			if (!match && word != NULL && strlen(word) > 0) {
342			res.pass = strdup(word);
343			match++;
344			t = &table[i];
345			}
346			break;
347			case ENDTOKEN:
348			break;
349			}
350			}
351
352			if (match != 1) {
353			if (word == NULL)
354			fprintf(stderr, "missing argument:\n");
355			else if (match > 1)
356			fprintf(stderr, "ambiguous argument: %s\n", word);
357			else if (match < 1)
358			fprintf(stderr, "unknown argument: %s\n", word);
359			return (NULL);
360			}
361
362			return (t);
363			}
364
365			void
366			show_valid_args(const struct token table[])
367			{
368			int i;
369
370			for (i = 0; table[i].type != ENDTOKEN; i++) {
371			switch (table[i].type) {
372			case NOTOKEN:
373			fprintf(stderr, " <cr>\n");
374			break;
375			case KEYWORD:
376			fprintf(stderr, " %s\n", table[i].keyword);
377			break;
378			case PATH:
379			fprintf(stderr, " <path>\n");
380			break;
381			case CANAME:
382			fprintf(stderr, " <caname>\n");
383			break;
384			case PASSWORD:
385			fprintf(stderr, " <password>\n");
386			break;
387			case PEER:
388			fprintf(stderr, " <peer>\n");
389			break;
390			case ADDRESS:
391			fprintf(stderr, " <ipaddr>\n");
392			break;
393			case FQDN:
394			fprintf(stderr, " <fqdn>\n");
395			break;
396			case ENDTOKEN:
397			break;
398			}
399			}
400			}