[apple/ipsec.git] / ipsec-tools / libipsec / ipsec_dump_policy.c

/* $Id: ipsec_dump_policy.c,v 1.7.4.2 2005/06/29 13:01:27 manubsd Exp $ */

/*
 * Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the project nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#ifdef HAVE_CONFIG_H
#include "config.h"
#endif

#include <sys/types.h>
#include <sys/param.h>
#include <sys/socket.h>

#include <netinet/in.h>
#ifdef HAVE_NETINET6_IPSEC
#  include <netinet6/ipsec.h>
#else
#  include <netinet/ipsec.h>
#endif

#include <arpa/inet.h>

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <netdb.h>

#include "ipsec_strerror.h"
#include "libpfkey.h"

static const char *ipsp_dir_strs[] = {
	"any", "in", "out", "fwd"
};

static const char *ipsp_policy_strs[] = {
	"discard", "none", "ipsec", "entrust", "bypass", "generate",
};

static char *ipsec_dump_ipsecrequest __P((char *, size_t,
	struct sadb_x_ipsecrequest *, size_t, int));
static char *ipsec_dump_policy1 __P((void *, const char *, int));
static int set_addresses __P((char *, size_t, struct sockaddr *,
	struct sockaddr *, int));
static char *set_address __P((char *, size_t, struct sockaddr *, int));

/*
 * policy is sadb_x_policy buffer.
 * Must call free() later.
 * When delimiter == NULL, alternatively ' '(space) is applied.
 */
char *
ipsec_dump_policy(policy, delimiter)
	ipsec_policy_t policy;
	__ipsec_const char *delimiter;
{
	return ipsec_dump_policy1(policy, delimiter, 0);
}

char *
ipsec_dump_policy_withports(policy, delimiter)
	void *policy;
	const char *delimiter;
{
	return ipsec_dump_policy1(policy, delimiter, 1);
}

static char *
ipsec_dump_policy1(policy, delimiter, withports)
	void *policy;
	const char *delimiter;
	int withports;
{
	struct sadb_x_policy *xpl = policy;
	struct sadb_x_ipsecrequest *xisr;
	size_t off, buflen;
	char *buf;
	char isrbuf[1024];
	char *newbuf;

#ifdef HAVE_PFKEY_POLICY_PRIORITY
	int32_t priority_offset;
	char *priority_str;
	char operator;
#endif

	/* sanity check */
	if (policy == NULL)
		return NULL;
	if (xpl->sadb_x_policy_exttype != SADB_X_EXT_POLICY) {
		__ipsec_errcode = EIPSEC_INVAL_EXTTYPE;
		return NULL;
	}

	/* set delimiter */
	if (delimiter == NULL)
		delimiter = " ";

#ifdef HAVE_PFKEY_POLICY_PRIORITY
	if (xpl->sadb_x_policy_priority == 0)
	{
		priority_offset = 0;
		priority_str = "";
	}
	/* find which constant the priority is closest to */
	else if (xpl->sadb_x_policy_priority < 
	         (u_int32_t) (PRIORITY_DEFAULT / 4) * 3)
	{
		priority_offset = xpl->sadb_x_policy_priority - PRIORITY_HIGH;
		priority_str = "prio high";
	}
	else if (xpl->sadb_x_policy_priority >= 
	         (u_int32_t) (PRIORITY_DEFAULT / 4) * 3 &&
	         xpl->sadb_x_policy_priority < 
	         (u_int32_t) (PRIORITY_DEFAULT / 4) * 5)
	{
		priority_offset = xpl->sadb_x_policy_priority - PRIORITY_DEFAULT;
		priority_str = "prio def";
	}
	else
	{
		priority_offset = xpl->sadb_x_policy_priority - PRIORITY_LOW;
		priority_str = "prio low";
	}

	/* fix sign to match the way it is input */
	priority_offset *= -1;
	if (priority_offset < 0)
	{
		operator = '-';
		priority_offset *= -1;
	}
	else
	{
		operator = '+';
	}
#endif
	
	switch (xpl->sadb_x_policy_dir) {
	case IPSEC_DIR_ANY:
	case IPSEC_DIR_INBOUND:
	case IPSEC_DIR_OUTBOUND:
#ifdef HAVE_POLICY_FWD
	case IPSEC_DIR_FWD:
#endif
		break;
	default:
		__ipsec_errcode = EIPSEC_INVAL_DIR;
		return NULL;
	}

	switch (xpl->sadb_x_policy_type) {
	case IPSEC_POLICY_DISCARD:
	case IPSEC_POLICY_GENERATE:
	case IPSEC_POLICY_NONE:
	case IPSEC_POLICY_IPSEC:
	case IPSEC_POLICY_BYPASS:
	case IPSEC_POLICY_ENTRUST:
		break;
	default:
		__ipsec_errcode = EIPSEC_INVAL_POLICY;
		return NULL;
	}

	buflen = strlen(ipsp_dir_strs[xpl->sadb_x_policy_dir])
		+ 1	/* space */
#ifdef HAVE_PFKEY_POLICY_PRIORITY
		+ strlen(priority_str)
		+ ((priority_offset != 0) ? 13 : 0) /* [space operator space int] */
		+ ((strlen(priority_str) != 0) ? 1 : 0) /* space */
#endif
		+ strlen(ipsp_policy_strs[xpl->sadb_x_policy_type])
		+ 1;	/* NUL */

	if ((buf = malloc(buflen)) == NULL) {
		__ipsec_errcode = EIPSEC_NO_BUFS;
		return NULL;
	}
#ifdef HAVE_PFKEY_POLICY_PRIORITY
	if (priority_offset != 0)
	{
		snprintf(buf, buflen, "%s %s %c %u %s", 
	    	ipsp_dir_strs[xpl->sadb_x_policy_dir], priority_str, operator, 
			priority_offset, ipsp_policy_strs[xpl->sadb_x_policy_type]);
	}
	else if (strlen (priority_str) != 0)
	{
		snprintf(buf, buflen, "%s %s %s", 
	    	ipsp_dir_strs[xpl->sadb_x_policy_dir], priority_str, 
			ipsp_policy_strs[xpl->sadb_x_policy_type]);
	}
	else
	{
		snprintf(buf, buflen, "%s %s", 
	    	ipsp_dir_strs[xpl->sadb_x_policy_dir],
			ipsp_policy_strs[xpl->sadb_x_policy_type]);
	}
#else
	snprintf(buf, buflen, "%s %s", ipsp_dir_strs[xpl->sadb_x_policy_dir],
	    ipsp_policy_strs[xpl->sadb_x_policy_type]);
#endif

	if (xpl->sadb_x_policy_type != IPSEC_POLICY_IPSEC) {
		__ipsec_errcode = EIPSEC_NO_ERROR;
		return buf;
	}

	/* count length of buffer for use */
	off = sizeof(*xpl);
	while (off < PFKEY_EXTLEN(xpl)) {
		xisr = (void *)((caddr_t)(void *)xpl + off);
		off += xisr->sadb_x_ipsecrequest_len;
	}

	/* validity check */
	if (off != PFKEY_EXTLEN(xpl)) {
		__ipsec_errcode = EIPSEC_INVAL_SADBMSG;
		free(buf);
		return NULL;
	}

	off = sizeof(*xpl);
	while (off < PFKEY_EXTLEN(xpl)) {
		int offset;
		xisr = (void *)((caddr_t)(void *)xpl + off);

		if (ipsec_dump_ipsecrequest(isrbuf, sizeof(isrbuf), xisr,
		    PFKEY_EXTLEN(xpl) - off, withports) == NULL) {
			free(buf);
			return NULL;
		}

		offset = strlen(buf);
		buflen = offset + strlen(delimiter) + strlen(isrbuf) + 1;
		newbuf = (char *)realloc(buf, buflen);
		if (newbuf == NULL) {
			__ipsec_errcode = EIPSEC_NO_BUFS;
			free(buf);
			return NULL;
		}
		buf = newbuf;
		snprintf(buf+offset, buflen-offset, "%s%s", delimiter, isrbuf);

		off += xisr->sadb_x_ipsecrequest_len;
	}

	__ipsec_errcode = EIPSEC_NO_ERROR;
	return buf;
}

static char *
ipsec_dump_ipsecrequest(buf, len, xisr, bound, withports)
	char *buf;
	size_t len;
	struct sadb_x_ipsecrequest *xisr;
	size_t bound;	/* boundary */
	int withports;
{
	const char *proto, *mode, *level;
	char abuf[NI_MAXHOST * 2 + 2];

	if (xisr->sadb_x_ipsecrequest_len > bound) {
		__ipsec_errcode = EIPSEC_INVAL_PROTO;
		return NULL;
	}

	switch (xisr->sadb_x_ipsecrequest_proto) {
	case IPPROTO_ESP:
		proto = "esp";
		break;
	case IPPROTO_AH:
		proto = "ah";
		break;
	case IPPROTO_IPCOMP:
		proto = "ipcomp";
		break;
	default:
		__ipsec_errcode = EIPSEC_INVAL_PROTO;
		return NULL;
	}

	switch (xisr->sadb_x_ipsecrequest_mode) {
	case IPSEC_MODE_ANY:
		mode = "any";
		break;
	case IPSEC_MODE_TRANSPORT:
		mode = "transport";
		break;
	case IPSEC_MODE_TUNNEL:
		mode = "tunnel";
		break;
	default:
		__ipsec_errcode = EIPSEC_INVAL_MODE;
		return NULL;
	}

	abuf[0] = '\0';
	if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) {
		struct sockaddr *sa1, *sa2;
		caddr_t p;

		p = (void *)(xisr + 1);
		sa1 = (void *)p;
		sa2 = (void *)(p + sysdep_sa_len(sa1));
		if (sizeof(*xisr) + sysdep_sa_len(sa1) + sysdep_sa_len(sa2) !=
		    xisr->sadb_x_ipsecrequest_len) {
			__ipsec_errcode = EIPSEC_INVAL_ADDRESS;
			return NULL;
		}
		if (set_addresses(abuf, sizeof(abuf), 
		    sa1, sa2, withports) != 0) {
			__ipsec_errcode = EIPSEC_INVAL_ADDRESS;
			return NULL;
		}
	}

	switch (xisr->sadb_x_ipsecrequest_level) {
	case IPSEC_LEVEL_DEFAULT:
		level = "default";
		break;
	case IPSEC_LEVEL_USE:
		level = "use";
		break;
	case IPSEC_LEVEL_REQUIRE:
		level = "require";
		break;
	case IPSEC_LEVEL_UNIQUE:
		level = "unique";
		break;
	default:
		__ipsec_errcode = EIPSEC_INVAL_LEVEL;
		return NULL;
	}

	if (xisr->sadb_x_ipsecrequest_reqid == 0)
		snprintf(buf, len, "%s/%s/%s/%s", proto, mode, abuf, level);
	else {
		int ch;

		if (xisr->sadb_x_ipsecrequest_reqid > IPSEC_MANUAL_REQID_MAX)
			ch = '#';
		else
			ch = ':';
		snprintf(buf, len, "%s/%s/%s/%s%c%u", proto, mode, abuf, level,
		    ch, xisr->sadb_x_ipsecrequest_reqid);
	}

	return buf;
}

static int
set_addresses(buf, len, sa1, sa2, withports)
	char *buf;
	size_t len;
	struct sockaddr *sa1;
	struct sockaddr *sa2;
	int withports;
{
	char tmp1[NI_MAXHOST], tmp2[NI_MAXHOST];

	if (set_address(tmp1, sizeof(tmp1), sa1, withports) == NULL ||
	    set_address(tmp2, sizeof(tmp2), sa2, withports) == NULL)
		return -1;
	if (strlen(tmp1) + 1 + strlen(tmp2) + 1 > len)
		return -1;
	snprintf(buf, len, "%s-%s", tmp1, tmp2);
	return 0;
}

static char *
set_address(buf, len, sa, withports)
	char *buf;
	size_t len;
	struct sockaddr *sa;
	int withports;
{
	const int niflags = NI_NUMERICHOST | NI_NUMERICSERV;
	char host[NI_MAXHOST];
	char serv[NI_MAXSERV];

	if (len < 1)
		return NULL;
	buf[0] = '\0';
	if (getnameinfo(sa, (socklen_t)sysdep_sa_len(sa), host, sizeof(host), 
	    serv, sizeof(serv), niflags) != 0)
		return NULL;

	if (withports)
		snprintf(buf, len, "%s[%s]", host, serv);
	else
		snprintf(buf, len, "%s", host);

	return buf;
}
Commit	Line	Data
52b7d2ce A	1	/* $Id: ipsec_dump_policy.c,v 1.7.4.2 2005/06/29 13:01:27 manubsd Exp $ */
	2
	3	/*
	4	* Copyright (C) 1995, 1996, 1997, 1998, and 1999 WIDE Project.
	5	* All rights reserved.
	6	*
	7	* Redistribution and use in source and binary forms, with or without
	8	* modification, are permitted provided that the following conditions
	9	* are met:
	10	* 1. Redistributions of source code must retain the above copyright
	11	* notice, this list of conditions and the following disclaimer.
	12	* 2. Redistributions in binary form must reproduce the above copyright
	13	* notice, this list of conditions and the following disclaimer in the
	14	* documentation and/or other materials provided with the distribution.
	15	* 3. Neither the name of the project nor the names of its contributors
	16	* may be used to endorse or promote products derived from this software
	17	* without specific prior written permission.
	18	*
	19	* THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND
	20	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	21	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	22	* ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE
	23	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	24	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	25	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	26	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	27	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	28	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	29	* SUCH DAMAGE.
	30	*/
	31
	32	#ifdef HAVE_CONFIG_H
	33	#include "config.h"
	34	#endif
	35
	36	#include <sys/types.h>
	37	#include <sys/param.h>
	38	#include <sys/socket.h>
	39
	40	#include <netinet/in.h>
	41	#ifdef HAVE_NETINET6_IPSEC
	42	# include <netinet6/ipsec.h>
	43	#else
	44	# include <netinet/ipsec.h>
	45	#endif
	46
	47	#include <arpa/inet.h>
	48
	49	#include <stdio.h>
	50	#include <stdlib.h>
	51	#include <string.h>
	52	#include <netdb.h>
	53
	54	#include "ipsec_strerror.h"
	55	#include "libpfkey.h"
	56
	57	static const char *ipsp_dir_strs[] = {
	58	"any", "in", "out", "fwd"
	59	};
	60
	61	static const char *ipsp_policy_strs[] = {
	62	"discard", "none", "ipsec", "entrust", "bypass", "generate",
	63	};
	64
65	static char ipsec_dump_ipsecrequest __P((char , size_t,
66	struct sadb_x_ipsecrequest *, size_t, int));
67	static char ipsec_dump_policy1 __P((void , const char *, int));
68	static int set_addresses __P((char , size_t, struct sockaddr ,
69	struct sockaddr *, int));
70	static char set_address __P((char , size_t, struct sockaddr *, int));
71
72	/*
73	* policy is sadb_x_policy buffer.
74	* Must call free() later.
75	* When delimiter == NULL, alternatively ' '(space) is applied.
76	*/
77	char *
78	ipsec_dump_policy(policy, delimiter)
79	ipsec_policy_t policy;
80	__ipsec_const char *delimiter;
81	{
82	return ipsec_dump_policy1(policy, delimiter, 0);
83	}
84
85	char *
86	ipsec_dump_policy_withports(policy, delimiter)
87	void *policy;
88	const char *delimiter;
89	{
90	return ipsec_dump_policy1(policy, delimiter, 1);
91	}
92
93	static char *
94	ipsec_dump_policy1(policy, delimiter, withports)
95	void *policy;
96	const char *delimiter;
97	int withports;
98	{
99	struct sadb_x_policy *xpl = policy;
100	struct sadb_x_ipsecrequest *xisr;
101	size_t off, buflen;
102	char *buf;
103	char isrbuf[1024];
104	char *newbuf;
105
106	#ifdef HAVE_PFKEY_POLICY_PRIORITY
107	int32_t priority_offset;
108	char *priority_str;
109	char operator;
110	#endif
111
112	/* sanity check */
113	if (policy == NULL)
114	return NULL;
115	if (xpl->sadb_x_policy_exttype != SADB_X_EXT_POLICY) {
116	__ipsec_errcode = EIPSEC_INVAL_EXTTYPE;
117	return NULL;
118	}
119
120	/* set delimiter */
121	if (delimiter == NULL)
122	delimiter = " ";
123
124	#ifdef HAVE_PFKEY_POLICY_PRIORITY
125	if (xpl->sadb_x_policy_priority == 0)
126	{
127	priority_offset = 0;
128	priority_str = "";
129	}
130	/* find which constant the priority is closest to */
131	else if (xpl->sadb_x_policy_priority <
132	(u_int32_t) (PRIORITY_DEFAULT / 4) * 3)
133	{
134	priority_offset = xpl->sadb_x_policy_priority - PRIORITY_HIGH;
135	priority_str = "prio high";
136	}
137	else if (xpl->sadb_x_policy_priority >=
138	(u_int32_t) (PRIORITY_DEFAULT / 4) * 3 &&
139	xpl->sadb_x_policy_priority <
140	(u_int32_t) (PRIORITY_DEFAULT / 4) * 5)
141	{
142	priority_offset = xpl->sadb_x_policy_priority - PRIORITY_DEFAULT;
143	priority_str = "prio def";
144	}
145	else
146	{
147	priority_offset = xpl->sadb_x_policy_priority - PRIORITY_LOW;
148	priority_str = "prio low";
149	}
150
151	/* fix sign to match the way it is input */
152	priority_offset *= -1;
153	if (priority_offset < 0)
154	{
155	operator = '-';
156	priority_offset *= -1;
157	}
158	else
159	{
160	operator = '+';
161	}
162	#endif
163
164	switch (xpl->sadb_x_policy_dir) {
165	case IPSEC_DIR_ANY:
166	case IPSEC_DIR_INBOUND:
167	case IPSEC_DIR_OUTBOUND:
168	#ifdef HAVE_POLICY_FWD
169	case IPSEC_DIR_FWD:
170	#endif
171	break;
172	default:
173	__ipsec_errcode = EIPSEC_INVAL_DIR;
174	return NULL;
175	}
176
177	switch (xpl->sadb_x_policy_type) {
178	case IPSEC_POLICY_DISCARD:
179	case IPSEC_POLICY_GENERATE:
180	case IPSEC_POLICY_NONE:
181	case IPSEC_POLICY_IPSEC:
182	case IPSEC_POLICY_BYPASS:
183	case IPSEC_POLICY_ENTRUST:
184	break;
185	default:
186	__ipsec_errcode = EIPSEC_INVAL_POLICY;
187	return NULL;
188	}
189
190	buflen = strlen(ipsp_dir_strs[xpl->sadb_x_policy_dir])
191	+ 1 /* space */
192	#ifdef HAVE_PFKEY_POLICY_PRIORITY
193	+ strlen(priority_str)
194	+ ((priority_offset != 0) ? 13 : 0) /* [space operator space int] */
195	+ ((strlen(priority_str) != 0) ? 1 : 0) /* space */
196	#endif
197	+ strlen(ipsp_policy_strs[xpl->sadb_x_policy_type])
198	+ 1; /* NUL */
199
200	if ((buf = malloc(buflen)) == NULL) {
201	__ipsec_errcode = EIPSEC_NO_BUFS;
202	return NULL;
203	}
204	#ifdef HAVE_PFKEY_POLICY_PRIORITY
205	if (priority_offset != 0)
206	{
207	snprintf(buf, buflen, "%s %s %c %u %s",
208	ipsp_dir_strs[xpl->sadb_x_policy_dir], priority_str, operator,
209	priority_offset, ipsp_policy_strs[xpl->sadb_x_policy_type]);
210	}
211	else if (strlen (priority_str) != 0)
212	{
213	snprintf(buf, buflen, "%s %s %s",
214	ipsp_dir_strs[xpl->sadb_x_policy_dir], priority_str,
215	ipsp_policy_strs[xpl->sadb_x_policy_type]);
216	}
217	else
218	{
219	snprintf(buf, buflen, "%s %s",
220	ipsp_dir_strs[xpl->sadb_x_policy_dir],
221	ipsp_policy_strs[xpl->sadb_x_policy_type]);
222	}
223	#else
224	snprintf(buf, buflen, "%s %s", ipsp_dir_strs[xpl->sadb_x_policy_dir],
225	ipsp_policy_strs[xpl->sadb_x_policy_type]);
226	#endif
227
228	if (xpl->sadb_x_policy_type != IPSEC_POLICY_IPSEC) {
229	__ipsec_errcode = EIPSEC_NO_ERROR;
230	return buf;
231	}
232
233	/* count length of buffer for use */
234	off = sizeof(*xpl);
235	while (off < PFKEY_EXTLEN(xpl)) {
236	xisr = (void )((caddr_t)(void )xpl + off);
237	off += xisr->sadb_x_ipsecrequest_len;
238	}
239
240	/* validity check */
241	if (off != PFKEY_EXTLEN(xpl)) {
242	__ipsec_errcode = EIPSEC_INVAL_SADBMSG;
243	free(buf);
244	return NULL;
245	}
246
247	off = sizeof(*xpl);
248	while (off < PFKEY_EXTLEN(xpl)) {
249	int offset;
250	xisr = (void )((caddr_t)(void )xpl + off);
251
252	if (ipsec_dump_ipsecrequest(isrbuf, sizeof(isrbuf), xisr,
253	PFKEY_EXTLEN(xpl) - off, withports) == NULL) {
254	free(buf);
255	return NULL;
256	}
257
258	offset = strlen(buf);
259	buflen = offset + strlen(delimiter) + strlen(isrbuf) + 1;
260	newbuf = (char *)realloc(buf, buflen);
261	if (newbuf == NULL) {
262	__ipsec_errcode = EIPSEC_NO_BUFS;
263	free(buf);
264	return NULL;
265	}
266	buf = newbuf;
267	snprintf(buf+offset, buflen-offset, "%s%s", delimiter, isrbuf);
268
269	off += xisr->sadb_x_ipsecrequest_len;
270	}
271
272	__ipsec_errcode = EIPSEC_NO_ERROR;
273	return buf;
274	}
275
276	static char *
277	ipsec_dump_ipsecrequest(buf, len, xisr, bound, withports)
278	char *buf;
279	size_t len;
280	struct sadb_x_ipsecrequest *xisr;
281	size_t bound; /* boundary */
282	int withports;
283	{
284	const char proto, mode, *level;
285	char abuf[NI_MAXHOST * 2 + 2];
286
287	if (xisr->sadb_x_ipsecrequest_len > bound) {
288	__ipsec_errcode = EIPSEC_INVAL_PROTO;
289	return NULL;
290	}
291
292	switch (xisr->sadb_x_ipsecrequest_proto) {
293	case IPPROTO_ESP:
294	proto = "esp";
295	break;
296	case IPPROTO_AH:
297	proto = "ah";
298	break;
299	case IPPROTO_IPCOMP:
300	proto = "ipcomp";
301	break;
302	default:
303	__ipsec_errcode = EIPSEC_INVAL_PROTO;
304	return NULL;
305	}
306
307	switch (xisr->sadb_x_ipsecrequest_mode) {
308	case IPSEC_MODE_ANY:
309	mode = "any";
310	break;
311	case IPSEC_MODE_TRANSPORT:
312	mode = "transport";
313	break;
314	case IPSEC_MODE_TUNNEL:
315	mode = "tunnel";
316	break;
317	default:
318	__ipsec_errcode = EIPSEC_INVAL_MODE;
319	return NULL;
320	}
321
322	abuf[0] = '\0';
323	if (xisr->sadb_x_ipsecrequest_len > sizeof(*xisr)) {
324	struct sockaddr sa1, sa2;
325	caddr_t p;
326
327	p = (void *)(xisr + 1);
328	sa1 = (void *)p;
329	sa2 = (void *)(p + sysdep_sa_len(sa1));
330	if (sizeof(*xisr) + sysdep_sa_len(sa1) + sysdep_sa_len(sa2) !=
331	xisr->sadb_x_ipsecrequest_len) {
332	__ipsec_errcode = EIPSEC_INVAL_ADDRESS;
333	return NULL;
334	}
335	if (set_addresses(abuf, sizeof(abuf),
336	sa1, sa2, withports) != 0) {
337	__ipsec_errcode = EIPSEC_INVAL_ADDRESS;
338	return NULL;
339	}
340	}
341
342	switch (xisr->sadb_x_ipsecrequest_level) {
343	case IPSEC_LEVEL_DEFAULT:
344	level = "default";
345	break;
346	case IPSEC_LEVEL_USE:
347	level = "use";
348	break;
349	case IPSEC_LEVEL_REQUIRE:
350	level = "require";
351	break;
352	case IPSEC_LEVEL_UNIQUE:
353	level = "unique";
354	break;
355	default:
356	__ipsec_errcode = EIPSEC_INVAL_LEVEL;
357	return NULL;
358	}
359
360	if (xisr->sadb_x_ipsecrequest_reqid == 0)
361	snprintf(buf, len, "%s/%s/%s/%s", proto, mode, abuf, level);
362	else {
363	int ch;
364
365	if (xisr->sadb_x_ipsecrequest_reqid > IPSEC_MANUAL_REQID_MAX)
366	ch = '#';
367	else
368	ch = ':';
369	snprintf(buf, len, "%s/%s/%s/%s%c%u", proto, mode, abuf, level,
370	ch, xisr->sadb_x_ipsecrequest_reqid);
371	}
372
373	return buf;
374	}
375
376	static int
377	set_addresses(buf, len, sa1, sa2, withports)
378	char *buf;
379	size_t len;
380	struct sockaddr *sa1;
381	struct sockaddr *sa2;
382	int withports;
383	{
384	char tmp1[NI_MAXHOST], tmp2[NI_MAXHOST];
385
386	if (set_address(tmp1, sizeof(tmp1), sa1, withports) == NULL \|\|
387	set_address(tmp2, sizeof(tmp2), sa2, withports) == NULL)
388	return -1;
389	if (strlen(tmp1) + 1 + strlen(tmp2) + 1 > len)
390	return -1;
391	snprintf(buf, len, "%s-%s", tmp1, tmp2);
392	return 0;
393	}
394
395	static char *
396	set_address(buf, len, sa, withports)
397	char *buf;
398	size_t len;
399	struct sockaddr *sa;
400	int withports;
401	{
402	const int niflags = NI_NUMERICHOST \| NI_NUMERICSERV;
403	char host[NI_MAXHOST];
404	char serv[NI_MAXSERV];
405
406	if (len < 1)
407	return NULL;
408	buf[0] = '\0';
409	if (getnameinfo(sa, (socklen_t)sysdep_sa_len(sa), host, sizeof(host),
410	serv, sizeof(serv), niflags) != 0)
411	return NULL;
412
413	if (withports)
414	snprintf(buf, len, "%s[%s]", host, serv);
415	else
416	snprintf(buf, len, "%s", host);
417
418	return buf;
419	}