parse.y revision 78064 
1/*	$FreeBSD: head/sbin/setkey/parse.y 78064 2001-06-11 12:39:29Z ume $	*/
2/*	$KAME: kame/kame/kame/setkey/parse.y,v 1.36 2001/06/07 15:53:12 sakane Exp $	*/
3
4/*
5 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 *    notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 *    notice, this list of conditions and the following disclaimer in the
15 *    documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the project nor the names of its contributors
17 *    may be used to endorse or promote products derived from this software
18 *    without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 */
32
33%{
34#include <sys/types.h>
35#include <sys/param.h>
36#include <sys/socket.h>
37
38#include <net/route.h>
39#include <netinet/in.h>
40#include <net/pfkeyv2.h>
41#include <netkey/key_var.h>
42#include <netinet6/ipsec.h>
43#include <arpa/inet.h>
44
45#include <string.h>
46#include <unistd.h>
47#include <stdio.h>
48#include <netdb.h>
49#include <ctype.h>
50#include <errno.h>
51
52#include "libpfkey.h"
53#include "vchar.h"
54
55#define ATOX(c) \
56  (isdigit(c) ? (c - '0') : (isupper(c) ? (c - 'A' + 10) : (c - 'a' + 10) ))
57
58u_int p_type;
59u_int32_t p_spi;
60int p_no_spi;
61struct sockaddr *p_src, *p_dst;
62u_int p_prefs, p_prefd, p_upper;
63u_int p_satype, p_ext, p_alg_enc, p_alg_auth, p_replay, p_mode;
64u_int32_t p_reqid;
65u_int p_key_enc_len, p_key_auth_len;
66caddr_t p_key_enc, p_key_auth;
67time_t p_lt_hard, p_lt_soft;
68
69u_int p_policy_len;
70char *p_policy;
71
72/* temporary buffer */
73static struct sockaddr *pp_addr;
74static u_int pp_prefix;
75static u_int pp_port;
76static caddr_t pp_key;
77
78extern u_char m_buf[BUFSIZ];
79extern int m_len;
80extern char cmdarg[8192];
81extern int f_debug;
82
83static struct addrinfo *parse_addr __P((char *, char *, int));
84static int setvarbuf __P((int *, struct sadb_ext *, int, caddr_t, int));
85void parse_init __P((void));
86void free_buffer __P((void));
87
88extern int setkeymsg __P((void));
89extern int sendkeymsg __P((void));
90
91extern int yylex __P((void));
92extern void yyfatal __P((const char *));
93extern void yyerror __P((const char *));
94%}
95
96%union {
97	unsigned long num;
98	vchar_t val;
99}
100
101%token EOT
102%token ADD GET DELETE FLUSH DUMP
103%token ADDRESS PREFIX PORT PORTANY
104%token UP_PROTO PR_ESP PR_AH PR_IPCOMP
105%token F_PROTOCOL F_AUTH F_ENC F_REPLAY F_COMP F_RAWCPI
106%token F_MODE MODE F_REQID
107%token F_EXT EXTENSION NOCYCLICSEQ
108%token ALG_AUTH ALG_ENC ALG_ENC_DESDERIV ALG_ENC_DES32IV ALG_COMP
109%token F_LIFETIME_HARD F_LIFETIME_SOFT
110%token DECSTRING QUOTEDSTRING HEXSTRING STRING ANY
111	/* SPD management */
112%token SPDADD SPDDELETE SPDDUMP SPDFLUSH
113%token F_POLICY PL_REQUESTS
114
115%type <num> PORT PREFIX EXTENSION MODE
116%type <num> UP_PROTO PR_ESP PR_AH PR_IPCOMP
117%type <num> ALG_AUTH ALG_ENC ALG_ENC_DESDERIV ALG_ENC_DES32IV ALG_COMP
118%type <num> DECSTRING
119%type <val> ADDRESS PL_REQUESTS
120%type <val> key_string policy_requests
121%type <val> QUOTEDSTRING HEXSTRING STRING
122
123%%
124commands
125	:	/*NOTHING*/
126	|	commands command
127		{
128			if (f_debug) {
129				printf("cmdarg:\n%s\n", cmdarg);
130			} else {
131				setkeymsg();
132				sendkeymsg();
133			}
134			free_buffer();
135			parse_init();
136		}
137	;
138
139command
140	:	add_command
141	|	get_command
142	|	delete_command
143	|	deleteall_command
144	|	flush_command
145	|	dump_command
146	|	spdadd_command
147	|	spddelete_command
148	|	spddump_command
149	|	spdflush_command
150	;
151	/* commands concerned with management, there is in tail of this file. */
152
153	/* add command */
154add_command
155	:	ADD { p_type = SADB_ADD; }
156		sa_selector_spec extension_spec algorithm_spec EOT
157	;
158
159	/* delete */
160delete_command
161	:	DELETE { p_type = SADB_DELETE; }
162		sa_selector_spec extension_spec
163		{
164			if (p_mode != IPSEC_MODE_ANY)
165				yyerror("WARNING: mode is obsoleted.");
166		}
167		EOT
168	;
169
170	/* deleteall command */
171deleteall_command
172	:	DELETEALL { p_type = SADB_DELETE; }
173		ipaddress { p_src = pp_addr; }
174		ipaddress { p_dst = pp_addr; }
175		protocol_spec
176		{ p_no_spi = 1; }
177		EOT
178	;
179
180	/* get command */
181get_command
182	:	GET { p_type = SADB_GET; }
183		sa_selector_spec extension_spec
184		{
185			if (p_mode != IPSEC_MODE_ANY)
186				yyerror("WARNING: mode is obsoleted.");
187		}
188		EOT
189	;
190
191	/* flush */
192flush_command
193	:	FLUSH { p_type = SADB_FLUSH; }
194		protocol_spec EOT
195	;
196
197	/* dump */
198dump_command
199	:	DUMP { p_type = SADB_DUMP; }
200		protocol_spec EOT
201	;
202
203	/* sa_selector_spec */
204sa_selector_spec
205	:	ipaddress { p_src = pp_addr; }
206		ipaddress { p_dst = pp_addr; }
207		protocol_spec spi
208	;
209
210protocol_spec
211	:	/*NOTHING*/ { p_satype = SADB_SATYPE_UNSPEC; }
212	|	PR_ESP
213		{
214			p_satype = SADB_SATYPE_ESP;
215			if ($1 == 1)
216				p_ext |= SADB_X_EXT_OLD;
217			else
218				p_ext &= ~SADB_X_EXT_OLD;
219		}
220	|	PR_AH
221		{
222			p_satype = SADB_SATYPE_AH;
223			if ($1 == 1)
224				p_ext |= SADB_X_EXT_OLD;
225			else
226				p_ext &= ~SADB_X_EXT_OLD;
227		}
228	|	PR_IPCOMP
229		{
230			p_satype = SADB_X_SATYPE_IPCOMP;
231		}
232	;
233
234spi
235	:	DECSTRING { p_spi = $1; }
236	|	HEXSTRING
237		{
238			caddr_t bp;
239			caddr_t yp = $1.buf;
240			char buf0[4], buf[4];
241			int i, j;
242
243			/* sanity check */
244			if ($1.len > 4) {
245				yyerror("SPI too big.");
246				free($1.buf);
247				return -1;
248			}
249
250			bp = buf0;
251			while (*yp) {
252				*bp = (ATOX(yp[0]) << 4) | ATOX(yp[1]);
253				yp += 2, bp++;
254			}
255
256			/* initialize */
257			for (i = 0; i < 4; i++) buf[i] = 0;
258
259			for (j = $1.len - 1, i = 3; j >= 0; j--, i--)
260				buf[i] = buf0[j];
261
262			/* XXX: endian */
263			p_spi = ntohl(*(u_int32_t *)buf);
264
265			free($1.buf);
266		}
267	;
268
269algorithm_spec
270	:	esp_spec
271	|	ah_spec
272	|	ipcomp_spec
273	;
274
275esp_spec
276	:	F_ENC enc_alg enc_key F_AUTH auth_alg auth_key
277	|	F_ENC enc_alg enc_key
278	;
279
280ah_spec
281	:	F_AUTH auth_alg auth_key
282	;
283
284ipcomp_spec
285	:	F_COMP ALG_COMP { p_alg_enc = $2; }
286	|	F_COMP ALG_COMP { p_alg_enc = $2; }
287		F_RAWCPI { p_ext |= SADB_X_EXT_RAWCPI; }
288	;
289
290enc_alg
291	:	ALG_ENC { p_alg_enc = $1; }
292	|	ALG_ENC_DESDERIV
293		{
294			p_alg_enc = $1;
295			if (p_ext & SADB_X_EXT_OLD) {
296				yyerror("algorithm mismatched.");
297				return -1;
298			}
299			p_ext |= SADB_X_EXT_DERIV;
300		}
301	|	ALG_ENC_DES32IV
302		{
303			p_alg_enc = $1;
304			if (!(p_ext & SADB_X_EXT_OLD)) {
305				yyerror("algorithm mismatched.");
306				return -1;
307			}
308			p_ext |= SADB_X_EXT_IV4B;
309		}
310	;
311
312enc_key
313	:	/*NOTHING*/
314		{
315			if (p_alg_enc != SADB_EALG_NULL) {
316				yyerror("no key found.");
317				return -1;
318			}
319		}
320	|	key_string
321		{
322			p_key_enc_len = $1.len;
323			p_key_enc = pp_key;
324
325			if (ipsec_check_keylen(SADB_EXT_SUPPORTED_ENCRYPT,
326					p_alg_enc,
327					PFKEY_UNUNIT64(p_key_enc_len)) < 0) {
328				yyerror(ipsec_strerror());
329				return -1;
330			}
331		}
332	;
333
334auth_alg
335	:	ALG_AUTH { p_alg_auth = $1; }
336	;
337
338auth_key
339	:	/*NOTHING*/
340		{
341			if (p_alg_auth != SADB_X_AALG_NULL) {
342				yyerror("no key found.");
343				return -1;
344			}
345		}
346	|	key_string
347		{
348			p_key_auth_len = $1.len;
349			p_key_auth = pp_key;
350
351			if (ipsec_check_keylen(SADB_EXT_SUPPORTED_AUTH,
352					p_alg_auth,
353					PFKEY_UNUNIT64(p_key_auth_len)) < 0) {
354				yyerror(ipsec_strerror());
355				return -1;
356			}
357		}
358	;
359
360key_string
361	:	QUOTEDSTRING
362		{
363			pp_key = $1.buf;
364			/* free pp_key later */
365		}
366	|	HEXSTRING
367		{
368			caddr_t bp;
369			caddr_t yp = $1.buf;
370
371			if ((pp_key = malloc($1.len)) == 0) {
372				free($1.buf);
373				yyerror("not enough core");
374				return -1;
375			}
376			memset(pp_key, 0, $1.len);
377
378			bp = pp_key;
379			while (*yp) {
380				*bp = (ATOX(yp[0]) << 4) | ATOX(yp[1]);
381				yp += 2, bp++;
382			}
383
384			free($1.buf);
385		}
386	;
387
388extension_spec
389	:	/*NOTHING*/
390	|	extension_spec extension
391	;
392
393extension
394	:	F_EXT EXTENSION { p_ext |= $2; }
395	|	F_EXT NOCYCLICSEQ { p_ext &= ~SADB_X_EXT_CYCSEQ; }
396	|	F_MODE MODE { p_mode = $2; }
397	|	F_MODE ANY { p_mode = IPSEC_MODE_ANY; }
398	|	F_REQID DECSTRING { p_reqid = $2; }
399	|	F_REPLAY DECSTRING
400		{
401			if (p_ext & SADB_X_EXT_OLD) {
402				yyerror("replay prevention "
403				        "only use on new spec.");
404				return -1;
405			}
406			p_replay = $2;
407		}
408	|	F_LIFETIME_HARD DECSTRING { p_lt_hard = $2; }
409	|	F_LIFETIME_SOFT DECSTRING { p_lt_soft = $2; }
410	;
411
412	/* definition about command for SPD management */
413	/* spdadd */
414spdadd_command
415	:	SPDADD
416		{
417			p_type = SADB_X_SPDADD;
418			p_satype = SADB_SATYPE_UNSPEC;
419		}
420		sp_selector_spec policy_spec EOT
421	;
422
423spddelete_command:
424		SPDDELETE
425		{
426			p_type = SADB_X_SPDDELETE;
427			p_satype = SADB_SATYPE_UNSPEC;
428		}
429		sp_selector_spec policy_spec EOT
430	;
431
432spddump_command:
433		SPDDUMP
434		{
435			p_type = SADB_X_SPDDUMP;
436			p_satype = SADB_SATYPE_UNSPEC;
437		}
438		EOT
439	;
440
441spdflush_command:
442		SPDFLUSH
443		{
444			p_type = SADB_X_SPDFLUSH;
445			p_satype = SADB_SATYPE_UNSPEC;
446		}
447		EOT
448	;
449
450	/* sp_selector_spec */
451sp_selector_spec
452	:	ipaddress { p_src = pp_addr; }
453		prefix { p_prefs = pp_prefix; }
454		port
455		{
456			switch (p_src->sa_family) {
457			case AF_INET:
458				((struct sockaddr_in *)p_src)->sin_port =
459				    htons(pp_port);
460				break;
461#ifdef INET6
462			case AF_INET6:
463				((struct sockaddr_in6 *)p_src)->sin6_port =
464				    htons(pp_port);
465				break;
466#endif
467			default:
468				exit(1); /*XXX*/
469			}
470		}
471		ipaddress { p_dst = pp_addr; }
472		prefix { p_prefd = pp_prefix; }
473		port
474		{
475			switch (p_dst->sa_family) {
476			case AF_INET:
477				((struct sockaddr_in *)p_dst)->sin_port =
478				    htons(pp_port);
479				break;
480#ifdef INET6
481			case AF_INET6:
482				((struct sockaddr_in6 *)p_dst)->sin6_port =
483				    htons(pp_port);
484				break;
485#endif
486			default:
487				exit(1); /*XXX*/
488			}
489		}
490		upper_spec
491		{
492			/* XXX is it something userland should check? */
493#if 0
494			switch (p_upper) {
495			case IPPROTO_ICMP:
496			case IPPROTO_ICMPV6:
497				if (_INPORTBYSA(p_src) != IPSEC_PORT_ANY
498				 || _INPORTBYSA(p_dst) != IPSEC_PORT_ANY) {
499					yyerror("port number must be \"any\".");
500					return -1;
501				}
502				if ((pp_addr->sa_family == AF_INET6
503				  && p_upper == IPPROTO_ICMP)
504				 || (pp_addr->sa_family == AF_INET
505				  && p_upper == IPPROTO_ICMPV6)) {
506					yyerror("upper layer protocol "
507						"mismatched.\n");
508					return -1;
509				}
510				break;
511			default:
512				break;
513			}
514#endif
515		}
516	;
517
518ipaddress
519	:	ADDRESS
520		{
521			struct addrinfo *res;
522
523			res = parse_addr($1.buf, NULL, AI_NUMERICHOST);
524			if (res == NULL) {
525				free($1.buf);
526				return -1;
527			}
528			pp_addr = (struct sockaddr *)malloc(res->ai_addrlen);
529			if (!pp_addr) {
530				yyerror("not enough core");
531				goto end;
532			}
533
534			memcpy(pp_addr, res->ai_addr, res->ai_addrlen);
535		    end:
536			freeaddrinfo(res);
537			free($1.buf);
538		}
539	;
540
541prefix
542	:	/*NOTHING*/ { pp_prefix = ~0; }
543	|	PREFIX { pp_prefix = $1; }
544	;
545
546port
547	:	/*NOTHING*/ { pp_port = IPSEC_PORT_ANY; }
548	|	PORT { pp_port = $1; }
549	|	PORTANY { pp_port = IPSEC_PORT_ANY; }
550	;
551
552upper_spec
553	:	DECSTRING { p_upper = $1; }
554	|	UP_PROTO { p_upper = $1; }
555	|	ANY { p_upper = IPSEC_ULPROTO_ANY; }
556	|	STRING
557		{
558			struct protoent *ent;
559
560			ent = getprotobyname($1.buf);
561			if (ent)
562				p_upper = ent->p_proto;
563			else {
564				if (strcmp("icmp6", $1.buf) == 0) {
565					p_upper = IPPROTO_ICMPV6;
566				} else if(strcmp("ip4", $1.buf) == 0) {
567					p_upper = IPPROTO_IPV4;
568				} else {
569					yyerror("invalid upper layer protocol");
570					free($1.buf);
571					return -1;
572				}
573			}
574			free($1.buf);
575		}
576	;
577
578policy_spec
579	:	F_POLICY policy_requests
580		{
581			p_policy = ipsec_set_policy($2.buf, $2.len);
582			if (p_policy == NULL) {
583				free($2.buf);
584				p_policy = NULL;
585				yyerror(ipsec_strerror());
586				return -1;
587			}
588
589			p_policy_len = ipsec_get_policylen(p_policy);
590
591			free($2.buf);
592		}
593	;
594
595policy_requests
596	:	PL_REQUESTS { $$ = $1; }
597	;
598
599%%
600
601int
602setkeymsg()
603{
604	struct sadb_msg m_msg;
605
606	m_msg.sadb_msg_version = PF_KEY_V2;
607	m_msg.sadb_msg_type = p_type;
608	m_msg.sadb_msg_errno = 0;
609	m_msg.sadb_msg_satype = p_satype;
610	m_msg.sadb_msg_reserved = 0;
611	m_msg.sadb_msg_seq = 0;
612	m_msg.sadb_msg_pid = getpid();
613
614	m_len = sizeof(struct sadb_msg);
615	memcpy(m_buf, &m_msg, m_len);
616
617	switch (p_type) {
618	case SADB_FLUSH:
619	case SADB_DUMP:
620		break;
621
622	case SADB_ADD:
623		/* set encryption algorithm, if present. */
624		if (p_satype != SADB_X_SATYPE_IPCOMP && p_alg_enc != SADB_EALG_NONE) {
625			struct sadb_key m_key;
626
627			m_key.sadb_key_len =
628				PFKEY_UNIT64(sizeof(m_key)
629				           + PFKEY_ALIGN8(p_key_enc_len));
630			m_key.sadb_key_exttype = SADB_EXT_KEY_ENCRYPT;
631			m_key.sadb_key_bits = p_key_enc_len * 8;
632			m_key.sadb_key_reserved = 0;
633
634			setvarbuf(&m_len,
635				(struct sadb_ext *)&m_key, sizeof(m_key),
636				(caddr_t)p_key_enc, p_key_enc_len);
637		}
638
639		/* set authentication algorithm, if present. */
640		if (p_alg_auth != SADB_AALG_NONE) {
641			struct sadb_key m_key;
642
643			m_key.sadb_key_len =
644				PFKEY_UNIT64(sizeof(m_key)
645				           + PFKEY_ALIGN8(p_key_auth_len));
646			m_key.sadb_key_exttype = SADB_EXT_KEY_AUTH;
647			m_key.sadb_key_bits = p_key_auth_len * 8;
648			m_key.sadb_key_reserved = 0;
649
650			setvarbuf(&m_len,
651				(struct sadb_ext *)&m_key, sizeof(m_key),
652				(caddr_t)p_key_auth, p_key_auth_len);
653		}
654
655		/* set lifetime for HARD */
656		if (p_lt_hard != 0) {
657			struct sadb_lifetime m_lt;
658			u_int len = sizeof(struct sadb_lifetime);
659
660			m_lt.sadb_lifetime_len = PFKEY_UNIT64(len);
661			m_lt.sadb_lifetime_exttype = SADB_EXT_LIFETIME_HARD;
662			m_lt.sadb_lifetime_allocations = 0;
663			m_lt.sadb_lifetime_bytes = 0;
664			m_lt.sadb_lifetime_addtime = p_lt_hard;
665			m_lt.sadb_lifetime_usetime = 0;
666
667			memcpy(m_buf + m_len, &m_lt, len);
668			m_len += len;
669		}
670
671		/* set lifetime for SOFT */
672		if (p_lt_soft != 0) {
673			struct sadb_lifetime m_lt;
674			u_int len = sizeof(struct sadb_lifetime);
675
676			m_lt.sadb_lifetime_len = PFKEY_UNIT64(len);
677			m_lt.sadb_lifetime_exttype = SADB_EXT_LIFETIME_SOFT;
678			m_lt.sadb_lifetime_allocations = 0;
679			m_lt.sadb_lifetime_bytes = 0;
680			m_lt.sadb_lifetime_addtime = p_lt_soft;
681			m_lt.sadb_lifetime_usetime = 0;
682
683			memcpy(m_buf + m_len, &m_lt, len);
684			m_len += len;
685		}
686		/* FALLTHROUGH */
687
688	case SADB_DELETE:
689	case SADB_GET:
690	    {
691		struct sadb_sa m_sa;
692		struct sadb_x_sa2 m_sa2;
693		struct sadb_address m_addr;
694		u_int len;
695
696		if (p_no_spi == 0) {
697			len = sizeof(struct sadb_sa);
698			m_sa.sadb_sa_len = PFKEY_UNIT64(len);
699			m_sa.sadb_sa_exttype = SADB_EXT_SA;
700			m_sa.sadb_sa_spi = htonl(p_spi);
701			m_sa.sadb_sa_replay = p_replay;
702			m_sa.sadb_sa_state = 0;
703			m_sa.sadb_sa_auth = p_alg_auth;
704			m_sa.sadb_sa_encrypt = p_alg_enc;
705			m_sa.sadb_sa_flags = p_ext;
706
707			memcpy(m_buf + m_len, &m_sa, len);
708			m_len += len;
709
710			len = sizeof(struct sadb_x_sa2);
711			m_sa2.sadb_x_sa2_len = PFKEY_UNIT64(len);
712			m_sa2.sadb_x_sa2_exttype = SADB_X_EXT_SA2;
713			m_sa2.sadb_x_sa2_mode = p_mode;
714			m_sa2.sadb_x_sa2_reqid = p_reqid;
715
716			memcpy(m_buf + m_len, &m_sa2, len);
717			m_len += len;
718		}
719
720		/* set src */
721		m_addr.sadb_address_len =
722			PFKEY_UNIT64(sizeof(m_addr)
723			           + PFKEY_ALIGN8(p_src->sa_len));
724		m_addr.sadb_address_exttype = SADB_EXT_ADDRESS_SRC;
725		m_addr.sadb_address_proto = IPSEC_ULPROTO_ANY;
726		switch (p_src->sa_family) {
727		case AF_INET:
728			m_addr.sadb_address_prefixlen =
729			    sizeof(struct in_addr) << 3;
730			break;
731#ifdef INET6
732		case AF_INET6:
733			m_addr.sadb_address_prefixlen =
734			    sizeof(struct in6_addr) << 3;
735			break;
736#endif
737		default:
738			yyerror("unsupported address family");
739			exit(1);	/*XXX*/
740		}
741		m_addr.sadb_address_reserved = 0;
742
743		setvarbuf(&m_len,
744			(struct sadb_ext *)&m_addr, sizeof(m_addr),
745			(caddr_t)p_src, p_src->sa_len);
746
747		/* set dst */
748		m_addr.sadb_address_len =
749			PFKEY_UNIT64(sizeof(m_addr)
750			           + PFKEY_ALIGN8(p_dst->sa_len));
751		m_addr.sadb_address_exttype = SADB_EXT_ADDRESS_DST;
752		m_addr.sadb_address_proto = IPSEC_ULPROTO_ANY;
753		switch (p_dst->sa_family) {
754		case AF_INET:
755			m_addr.sadb_address_prefixlen =
756			    sizeof(struct in_addr) << 3;
757			break;
758#ifdef INET6
759		case AF_INET6:
760			m_addr.sadb_address_prefixlen =
761			    sizeof(struct in6_addr) << 3;
762			break;
763#endif
764		default:
765			yyerror("unsupported address family");
766			exit(1);	/*XXX*/
767		}
768		m_addr.sadb_address_reserved = 0;
769
770		setvarbuf(&m_len,
771			(struct sadb_ext *)&m_addr, sizeof(m_addr),
772			(caddr_t)p_dst, p_dst->sa_len);
773	    }
774		break;
775
776	/* for SPD management */
777	case SADB_X_SPDFLUSH:
778	case SADB_X_SPDDUMP:
779		break;
780
781	case SADB_X_SPDADD:
782	case SADB_X_SPDDELETE:
783	    {
784		struct sadb_address m_addr;
785		u_int8_t plen;
786
787		memcpy(m_buf + m_len, p_policy, p_policy_len);
788		m_len += p_policy_len;
789		free(p_policy);
790		p_policy = NULL;
791
792		/* set src */
793		m_addr.sadb_address_len =
794			PFKEY_UNIT64(sizeof(m_addr)
795			           + PFKEY_ALIGN8(p_src->sa_len));
796		m_addr.sadb_address_exttype = SADB_EXT_ADDRESS_SRC;
797		m_addr.sadb_address_proto = p_upper;
798		switch (p_src->sa_family) {
799		case AF_INET:
800			plen = sizeof(struct in_addr) << 3;
801			break;
802#ifdef INET6
803		case AF_INET6:
804			plen = sizeof(struct in6_addr) << 3;
805			break;
806#endif
807		default:
808			yyerror("unsupported address family");
809			exit(1);	/*XXX*/
810		}
811		m_addr.sadb_address_prefixlen =
812		    (p_prefs != ~0 ? p_prefs : plen);
813		m_addr.sadb_address_reserved = 0;
814
815		setvarbuf(&m_len,
816			(struct sadb_ext *)&m_addr, sizeof(m_addr),
817			(caddr_t)p_src, p_src->sa_len);
818
819		/* set dst */
820		m_addr.sadb_address_len =
821			PFKEY_UNIT64(sizeof(m_addr)
822			           + PFKEY_ALIGN8(p_dst->sa_len));
823		m_addr.sadb_address_exttype = SADB_EXT_ADDRESS_DST;
824		m_addr.sadb_address_proto = p_upper;
825		switch (p_dst->sa_family) {
826		case AF_INET:
827			plen = sizeof(struct in_addr) << 3;
828			break;
829#ifdef INET6
830		case AF_INET6:
831			plen = sizeof(struct in6_addr) << 3;
832			break;
833#endif
834		default:
835			yyerror("unsupported address family");
836			exit(1);	/*XXX*/
837		}
838		m_addr.sadb_address_prefixlen =
839		    (p_prefd != ~0 ? p_prefd : plen);
840		m_addr.sadb_address_reserved = 0;
841
842		setvarbuf(&m_len,
843			(struct sadb_ext *)&m_addr, sizeof(m_addr),
844			(caddr_t)p_dst, p_dst->sa_len);
845	    }
846		break;
847	}
848
849	((struct sadb_msg *)m_buf)->sadb_msg_len = PFKEY_UNIT64(m_len);
850
851	return 0;
852}
853
854static struct addrinfo *
855parse_addr(host, port, flag)
856	char *host;
857	char *port;
858	int flag;
859{
860	struct addrinfo hints, *res = NULL;
861	int error;
862
863	memset(&hints, 0, sizeof(hints));
864	hints.ai_family = PF_UNSPEC;
865	hints.ai_socktype = SOCK_DGRAM;
866	hints.ai_flags = flag;
867	error = getaddrinfo(host, port, &hints, &res);
868	if (error != 0) {
869		yyerror(gai_strerror(error));
870		return NULL;
871	}
872	if (res->ai_next != NULL) {
873		yyerror(gai_strerror(error));
874	}
875	return res;
876}
877
878static int
879setvarbuf(off, ebuf, elen, vbuf, vlen)
880	caddr_t vbuf;
881	struct sadb_ext *ebuf;
882	int *off, elen, vlen;
883{
884	memset(m_buf + *off, 0, PFKEY_UNUNIT64(ebuf->sadb_ext_len));
885	memcpy(m_buf + *off, (caddr_t)ebuf, elen);
886	memcpy(m_buf + *off + elen, vbuf, vlen);
887	(*off) += PFKEY_ALIGN8(elen + vlen);
888
889	return 0;
890}
891
892void
893parse_init()
894{
895	p_type = 0;
896	p_spi = 0;
897	p_no_spi = 0;
898
899	p_src = 0, p_dst = 0;
900	pp_prefix = p_prefs = p_prefd = ~0;
901	pp_port = IPSEC_PORT_ANY;
902	p_upper = 0;
903
904	p_satype = 0;
905	p_ext = SADB_X_EXT_CYCSEQ;
906	p_alg_enc = SADB_EALG_NONE;
907	p_alg_auth = SADB_AALG_NONE;
908	p_mode = IPSEC_MODE_ANY;
909	p_reqid = 0;
910	p_replay = 0;
911	p_key_enc_len = p_key_auth_len = 0;
912	p_key_enc = p_key_auth = 0;
913	p_lt_hard = p_lt_soft = 0;
914
915	p_policy_len = 0;
916	p_policy = NULL;
917
918	memset(cmdarg, 0, sizeof(cmdarg));
919
920	return;
921}
922
923void
924free_buffer()
925{
926	if (p_src) free(p_src);
927	if (p_dst) free(p_dst);
928	if (p_key_enc) free(p_key_enc);
929	if (p_key_auth) free(p_key_auth);
930
931	return;
932}
933
934