summaryrefslogtreecommitdiff
path: root/lib/sockunion.c
blob: a636c64125a559a7171f009495e0c45144fe059e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
/* Socket union related function.
 * Copyright (c) 1997, 98 Kunihiro Ishiguro
 *
 * This file is part of GNU Zebra.
 *
 * GNU Zebra is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the
 * Free Software Foundation; either version 2, or (at your option) any
 * later version.
 *
 * GNU Zebra is distributed in the hope that it will be useful, but
 * WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU Zebra; see the file COPYING.  If not, write to the Free
 * Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
 * 02111-1307, USA.  
 */

#include <zebra.h>

#include "prefix.h"
#include "vty.h"
#include "sockunion.h"
#include "memory.h"
#include "str.h"
#include "log.h"

#ifndef HAVE_INET_ATON
int
inet_aton (const char *cp, struct in_addr *inaddr)
{
  int dots = 0;
  register u_long addr = 0;
  register u_long val = 0, base = 10;

  do
    {
      register char c = *cp;

      switch (c)
	{
	case '0': case '1': case '2': case '3': case '4': case '5':
	case '6': case '7': case '8': case '9':
	  val = (val * base) + (c - '0');
	  break;
	case '.':
	  if (++dots > 3)
	    return 0;
	case '\0':
	  if (val > 255)
	    return 0;
	  addr = addr << 8 | val;
	  val = 0;
	  break;
	default:
	  return 0;
	}
    } while (*cp++) ;

  if (dots < 3)
    addr <<= 8 * (3 - dots);
  if (inaddr)
    inaddr->s_addr = htonl (addr);
  return 1;
}
#endif /* ! HAVE_INET_ATON */


#ifndef HAVE_INET_PTON
int
inet_pton (int family, const char *strptr, void *addrptr)
{
  if (family == AF_INET)
    {
      struct in_addr in_val;

      if (inet_aton (strptr, &in_val))
	{
	  memcpy (addrptr, &in_val, sizeof (struct in_addr));
	  return 1;
	}
      return 0;
    }
  errno = EAFNOSUPPORT;
  return -1;
}
#endif /* ! HAVE_INET_PTON */

#ifndef HAVE_INET_NTOP
const char *
inet_ntop (int family, const void *addrptr, char *strptr, size_t len)
{
  unsigned char *p = (unsigned char *) addrptr;

  if (family == AF_INET) 
    {
      char temp[INET_ADDRSTRLEN];

      snprintf(temp, sizeof(temp), "%d.%d.%d.%d", p[0], p[1], p[2], p[3]);

      if (strlen(temp) >= len) 
	{
	  errno = ENOSPC;
	  return NULL;
	}
      strcpy(strptr, temp);
      return strptr;
    }

  errno = EAFNOSUPPORT;
  return NULL;
}
#endif /* ! HAVE_INET_NTOP */

const char *
inet_sutop (union sockunion *su, char *str)
{
  switch (su->sa.sa_family)
    {
    case AF_INET:
      inet_ntop (AF_INET, &su->sin.sin_addr, str, INET_ADDRSTRLEN);
      break;
#ifdef HAVE_IPV6
    case AF_INET6:
      inet_ntop (AF_INET6, &su->sin6.sin6_addr, str, INET6_ADDRSTRLEN);
      break;
#endif /* HAVE_IPV6 */
    }
  return str;
}

int
str2sockunion (const char *str, union sockunion *su)
{
  int ret;

  memset (su, 0, sizeof (union sockunion));

  ret = inet_pton (AF_INET, str, &su->sin.sin_addr);
  if (ret > 0)			/* Valid IPv4 address format. */
    {
      su->sin.sin_family = AF_INET;
#ifdef HAVE_SIN_LEN
      su->sin.sin_len = sizeof(struct sockaddr_in);
#endif /* HAVE_SIN_LEN */
      return 0;
    }
#ifdef HAVE_IPV6
  ret = inet_pton (AF_INET6, str, &su->sin6.sin6_addr);
  if (ret > 0)			/* Valid IPv6 address format. */
    {
      su->sin6.sin6_family = AF_INET6;
#ifdef SIN6_LEN
      su->sin6.sin6_len = sizeof(struct sockaddr_in6);
#endif /* SIN6_LEN */
      return 0;
    }
#endif /* HAVE_IPV6 */
  return -1;
}

const char *
sockunion2str (union sockunion *su, char *buf, size_t len)
{
  if  (su->sa.sa_family == AF_INET)
    return inet_ntop (AF_INET, &su->sin.sin_addr, buf, len);
#ifdef HAVE_IPV6
  else if (su->sa.sa_family == AF_INET6)
    return inet_ntop (AF_INET6, &su->sin6.sin6_addr, buf, len);
#endif /* HAVE_IPV6 */
  return NULL;
}

union sockunion *
sockunion_str2su (const char *str)
{
  int ret;
  union sockunion *su;

  su = XMALLOC (MTYPE_SOCKUNION, sizeof (union sockunion));
  memset (su, 0, sizeof (union sockunion));

  ret = inet_pton (AF_INET, str, &su->sin.sin_addr);
  if (ret > 0)			/* Valid IPv4 address format. */
    {
      su->sin.sin_family = AF_INET;
#ifdef HAVE_SIN_LEN
      su->sin.sin_len = sizeof(struct sockaddr_in);
#endif /* HAVE_SIN_LEN */
      return su;
    }
#ifdef HAVE_IPV6
  ret = inet_pton (AF_INET6, str, &su->sin6.sin6_addr);
  if (ret > 0)			/* Valid IPv6 address format. */
    {
      su->sin6.sin6_family = AF_INET6;
#ifdef SIN6_LEN
      su->sin6.sin6_len = sizeof(struct sockaddr_in6);
#endif /* SIN6_LEN */
      return su;
    }
#endif /* HAVE_IPV6 */

  XFREE (MTYPE_SOCKUNION, su);
  return NULL;
}

char *
sockunion_su2str (union sockunion *su)
{
  char str[SU_ADDRSTRLEN];

  switch (su->sa.sa_family)
    {
    case AF_INET:
      inet_ntop (AF_INET, &su->sin.sin_addr, str, sizeof (str));
      break;
#ifdef HAVE_IPV6
    case AF_INET6:
      inet_ntop (AF_INET6, &su->sin6.sin6_addr, str, sizeof (str));
      break;
#endif /* HAVE_IPV6 */
    }
  return strdup (str);
}

/* Return socket of sockunion. */
int
sockunion_socket (union sockunion *su)
{
  int sock;

  sock = socket (su->sa.sa_family, SOCK_STREAM, 0);
  if (sock < 0)
    {
      zlog (NULL, LOG_WARNING, "Can't make socket : %s", safe_strerror (errno));
      return -1;
    }

  return sock;
}

/* Return accepted new socket file descriptor. */
int
sockunion_accept (int sock, union sockunion *su)
{
  socklen_t len;
  int client_sock;

  len = sizeof (union sockunion);
  client_sock = accept (sock, (struct sockaddr *) su, &len);
  
  /* Convert IPv4 compatible IPv6 address to IPv4 address. */
#ifdef HAVE_IPV6
  if (su->sa.sa_family == AF_INET6)
    {
      if (IN6_IS_ADDR_V4MAPPED (&su->sin6.sin6_addr))
	{
	  struct sockaddr_in sin;

	  memset (&sin, 0, sizeof (struct sockaddr_in));
	  sin.sin_family = AF_INET;
	  memcpy (&sin.sin_addr, ((char *)&su->sin6.sin6_addr) + 12, 4);
	  memcpy (su, &sin, sizeof (struct sockaddr_in));
	}
    }
#endif /* HAVE_IPV6 */

  return client_sock;
}

/* Return sizeof union sockunion.  */
static int
sockunion_sizeof (union sockunion *su)
{
  int ret;

  ret = 0;
  switch (su->sa.sa_family)
    {
    case AF_INET:
      ret = sizeof (struct sockaddr_in);
      break;
#ifdef HAVE_IPV6
    case AF_INET6:
      ret = sizeof (struct sockaddr_in6);
      break;
#endif /* AF_INET6 */
    }
  return ret;
}

/* return sockunion structure : this function should be revised. */
static char *
sockunion_log (union sockunion *su)
{
  static char buf[SU_ADDRSTRLEN];

  switch (su->sa.sa_family) 
    {
    case AF_INET:
      snprintf (buf, SU_ADDRSTRLEN, "%s", inet_ntoa (su->sin.sin_addr));
      break;
#ifdef HAVE_IPV6
    case AF_INET6:
      snprintf (buf, SU_ADDRSTRLEN, "%s",
		inet_ntop (AF_INET6, &(su->sin6.sin6_addr), buf, SU_ADDRSTRLEN));
      break;
#endif /* HAVE_IPV6 */
    default:
      snprintf (buf, SU_ADDRSTRLEN, "af_unknown %d ", su->sa.sa_family);
      break;
    }
  return (strdup (buf));
}

/* sockunion_connect returns
   -1 : error occured
   0 : connect success
   1 : connect is in progress */
enum connect_result
sockunion_connect (int fd, union sockunion *peersu, unsigned short port,
		   unsigned int ifindex)
{
  int ret;
  int val;
  union sockunion su;

  memcpy (&su, peersu, sizeof (union sockunion));

  switch (su.sa.sa_family)
    {
    case AF_INET:
      su.sin.sin_port = port;
      break;
#ifdef HAVE_IPV6
    case AF_INET6:
      su.sin6.sin6_port  = port;
#ifdef KAME
      if (IN6_IS_ADDR_LINKLOCAL(&su.sin6.sin6_addr) && ifindex)
	{
#ifdef HAVE_SIN6_SCOPE_ID
	  /* su.sin6.sin6_scope_id = ifindex; */
#ifdef MUSICA
	  su.sin6.sin6_scope_id = ifindex; 
#endif
#endif /* HAVE_SIN6_SCOPE_ID */
#ifndef MUSICA
	  SET_IN6_LINKLOCAL_IFINDEX (su.sin6.sin6_addr, ifindex);
#endif
	}
#endif /* KAME */
      break;
#endif /* HAVE_IPV6 */
    }      

  /* Make socket non-block. */
  val = fcntl (fd, F_GETFL, 0);
  fcntl (fd, F_SETFL, val|O_NONBLOCK);

  /* Call connect function. */
  ret = connect (fd, (struct sockaddr *) &su, sockunion_sizeof (&su));

  /* Immediate success */
  if (ret == 0)
    {
      fcntl (fd, F_SETFL, val);
      return connect_success;
    }

  /* If connect is in progress then return 1 else it's real error. */
  if (ret < 0)
    {
      if (errno != EINPROGRESS)
	{
	  zlog_info ("can't connect to %s fd %d : %s",
		     sockunion_log (&su), fd, safe_strerror (errno));
	  return connect_error;
	}
    }

  fcntl (fd, F_SETFL, val);

  return connect_in_progress;
}

/* Make socket from sockunion union. */
int
sockunion_stream_socket (union sockunion *su)
{
  int sock;

  if (su->sa.sa_family == 0)
    su->sa.sa_family = AF_INET_UNION;

  sock = socket (su->sa.sa_family, SOCK_STREAM, 0);

  if (sock < 0)
    zlog (NULL, LOG_WARNING, "can't make socket sockunion_stream_socket");

  return sock;
}

/* Bind socket to specified address. */
int
sockunion_bind (int sock, union sockunion *su, unsigned short port, 
		union sockunion *su_addr)
{
  int size = 0;
  int ret;

  if (su->sa.sa_family == AF_INET)
    {
      size = sizeof (struct sockaddr_in);
      su->sin.sin_port = htons (port);
#ifdef HAVE_SIN_LEN
      su->sin.sin_len = size;
#endif /* HAVE_SIN_LEN */
      if (su_addr == NULL)
	su->sin.sin_addr.s_addr = htonl (INADDR_ANY);
    }
#ifdef HAVE_IPV6
  else if (su->sa.sa_family == AF_INET6)
    {
      size = sizeof (struct sockaddr_in6);
      su->sin6.sin6_port = htons (port);
#ifdef SIN6_LEN
      su->sin6.sin6_len = size;
#endif /* SIN6_LEN */
      if (su_addr == NULL)
	{
#if defined(LINUX_IPV6) || defined(NRL)
	  memset (&su->sin6.sin6_addr, 0, sizeof (struct in6_addr));
#else
	  su->sin6.sin6_addr = in6addr_any;
#endif /* LINUX_IPV6 */
	}
    }
#endif /* HAVE_IPV6 */
  

  ret = bind (sock, (struct sockaddr *)su, size);
  if (ret < 0)
    zlog (NULL, LOG_WARNING, "can't bind socket : %s", safe_strerror (errno));

  return ret;
}

int
sockopt_reuseaddr (int sock)
{
  int ret;
  int on = 1;

  ret = setsockopt (sock, SOL_SOCKET, SO_REUSEADDR, 
		    (void *) &on, sizeof (on));
  if (ret < 0)
    {
      zlog (NULL, LOG_WARNING, "can't set sockopt SO_REUSEADDR to socket %d", sock);
      return -1;
    }
  return 0;
}

#ifdef SO_REUSEPORT
int
sockopt_reuseport (int sock)
{
  int ret;
  int on = 1;

  ret = setsockopt (sock, SOL_SOCKET, SO_REUSEPORT, 
		    (void *) &on, sizeof (on));
  if (ret < 0)
    {
      zlog (NULL, LOG_WARNING, "can't set sockopt SO_REUSEPORT to socket %d", sock);
      return -1;
    }
  return 0;
}
#else
int
sockopt_reuseport (int sock)
{
  return 0;
}
#endif /* 0 */

int
sockopt_ttl (int family, int sock, int ttl)
{
  int ret;

#ifdef IP_TTL
  if (family == AF_INET)
    {
      ret = setsockopt (sock, IPPROTO_IP, IP_TTL, 
			(void *) &ttl, sizeof (int));
      if (ret < 0)
	{
	  zlog (NULL, LOG_WARNING, "can't set sockopt IP_TTL %d to socket %d", ttl, sock);
	  return -1;
	}
      return 0;
    }
#endif /* IP_TTL */
#ifdef HAVE_IPV6
  if (family == AF_INET6)
    {
      ret = setsockopt (sock, IPPROTO_IPV6, IPV6_UNICAST_HOPS, 
			(void *) &ttl, sizeof (int));
      if (ret < 0)
	{
	  zlog (NULL, LOG_WARNING, "can't set sockopt IPV6_UNICAST_HOPS %d to socket %d",
		    ttl, sock);
	  return -1;
	}
      return 0;
    }
#endif /* HAVE_IPV6 */
  return 0;
}

/* If same family and same prefix return 1. */
int
sockunion_same (union sockunion *su1, union sockunion *su2)
{
  int ret = 0;

  if (su1->sa.sa_family != su2->sa.sa_family)
    return 0;

  switch (su1->sa.sa_family)
    {
    case AF_INET:
      ret = memcmp (&su1->sin.sin_addr, &su2->sin.sin_addr,
		    sizeof (struct in_addr));
      break;
#ifdef HAVE_IPV6
    case AF_INET6:
      ret = memcmp (&su1->sin6.sin6_addr, &su2->sin6.sin6_addr,
		    sizeof (struct in6_addr));
      break;
#endif /* HAVE_IPV6 */
    }
  if (ret == 0)
    return 1;
  else
    return 0;
}

/* After TCP connection is established.  Get local address and port. */
union sockunion *
sockunion_getsockname (int fd)
{
  int ret;
  socklen_t len;
  union
  {
    struct sockaddr sa;
    struct sockaddr_in sin;
#ifdef HAVE_IPV6
    struct sockaddr_in6 sin6;
#endif /* HAVE_IPV6 */
    char tmp_buffer[128];
  } name;
  union sockunion *su;

  memset (&name, 0, sizeof name);
  len = sizeof name;

  ret = getsockname (fd, (struct sockaddr *)&name, &len);
  if (ret < 0)
    {
      zlog_warn ("Can't get local address and port by getsockname: %s",
		 safe_strerror (errno));
      return NULL;
    }

  if (name.sa.sa_family == AF_INET)
    {
      su = XCALLOC (MTYPE_TMP, sizeof (union sockunion));
      memcpy (su, &name, sizeof (struct sockaddr_in));
      return su;
    }
#ifdef HAVE_IPV6
  if (name.sa.sa_family == AF_INET6)
    {
      su = XCALLOC (MTYPE_TMP, sizeof (union sockunion));
      memcpy (su, &name, sizeof (struct sockaddr_in6));

      if (IN6_IS_ADDR_V4MAPPED (&su->sin6.sin6_addr))
	{
	  struct sockaddr_in sin;

	  sin.sin_family = AF_INET;
	  memcpy (&sin.sin_addr, ((char *)&su->sin6.sin6_addr) + 12, 4);
	  sin.sin_port = su->sin6.sin6_port;
	  memcpy (su, &sin, sizeof (struct sockaddr_in));
	}
      return su;
    }
#endif /* HAVE_IPV6 */
  return NULL;
}

/* After TCP connection is established.  Get remote address and port. */
union sockunion *
sockunion_getpeername (int fd)
{
  int ret;
  socklen_t len;
  union
  {
    struct sockaddr sa;
    struct sockaddr_in sin;
#ifdef HAVE_IPV6
    struct sockaddr_in6 sin6;
#endif /* HAVE_IPV6 */
    char tmp_buffer[128];
  } name;
  union sockunion *su;

  memset (&name, 0, sizeof name);
  len = sizeof name;
  ret = getpeername (fd, (struct sockaddr *)&name, &len);
  if (ret < 0)
    {
      zlog (NULL, LOG_WARNING, "Can't get remote address and port: %s",
	    safe_strerror (errno));
      return NULL;
    }

  if (name.sa.sa_family == AF_INET)
    {
      su = XCALLOC (MTYPE_TMP, sizeof (union sockunion));
      memcpy (su, &name, sizeof (struct sockaddr_in));
      return su;
    }
#ifdef HAVE_IPV6
  if (name.sa.sa_family == AF_INET6)
    {
      su = XCALLOC (MTYPE_TMP, sizeof (union sockunion));
      memcpy (su, &name, sizeof (struct sockaddr_in6));

      if (IN6_IS_ADDR_V4MAPPED (&su->sin6.sin6_addr))
	{
	  struct sockaddr_in sin;

	  sin.sin_family = AF_INET;
	  memcpy (&sin.sin_addr, ((char *)&su->sin6.sin6_addr) + 12, 4);
	  sin.sin_port = su->sin6.sin6_port;
	  memcpy (su, &sin, sizeof (struct sockaddr_in));
	}
      return su;
    }
#endif /* HAVE_IPV6 */
  return NULL;
}

/* Print sockunion structure */
static void __attribute__ ((unused))
sockunion_print (union sockunion *su)
{
  if (su == NULL)
    return;

  switch (su->sa.sa_family) 
    {
    case AF_INET:
      printf ("%s\n", inet_ntoa (su->sin.sin_addr));
      break;
#ifdef HAVE_IPV6
    case AF_INET6:
      {
	char buf [SU_ADDRSTRLEN];

	printf ("%s\n", inet_ntop (AF_INET6, &(su->sin6.sin6_addr),
				 buf, sizeof (buf)));
      }
      break;
#endif /* HAVE_IPV6 */

#ifdef AF_LINK
    case AF_LINK:
      {
	struct sockaddr_dl *sdl;

	sdl = (struct sockaddr_dl *)&(su->sa);
	printf ("link#%d\n", sdl->sdl_index);
      }
      break;
#endif /* AF_LINK */
    default:
      printf ("af_unknown %d\n", su->sa.sa_family);
      break;
    }
}

#ifdef HAVE_IPV6
static int
in6addr_cmp (struct in6_addr *addr1, struct in6_addr *addr2)
{
  unsigned int i;
  u_char *p1, *p2;

  p1 = (u_char *)addr1;
  p2 = (u_char *)addr2;

  for (i = 0; i < sizeof (struct in6_addr); i++)
    {
      if (p1[i] > p2[i])
	return 1;
      else if (p1[i] < p2[i])
	return -1;
    }
  return 0;
}
#endif /* HAVE_IPV6 */

int
sockunion_cmp (union sockunion *su1, union sockunion *su2)
{
  if (su1->sa.sa_family > su2->sa.sa_family)
    return 1;
  if (su1->sa.sa_family < su2->sa.sa_family)
    return -1;

  if (su1->sa.sa_family == AF_INET)
    {
      if (ntohl (su1->sin.sin_addr.s_addr) == ntohl (su2->sin.sin_addr.s_addr))
	return 0;
      if (ntohl (su1->sin.sin_addr.s_addr) > ntohl (su2->sin.sin_addr.s_addr))
	return 1;
      else
	return -1;
    }
#ifdef HAVE_IPV6
  if (su1->sa.sa_family == AF_INET6)
    return in6addr_cmp (&su1->sin6.sin6_addr, &su2->sin6.sin6_addr);
#endif /* HAVE_IPV6 */
  return 0;
}

/* Duplicate sockunion. */
union sockunion *
sockunion_dup (union sockunion *su)
{
  union sockunion *dup = XCALLOC (MTYPE_SOCKUNION, sizeof (union sockunion));
  memcpy (dup, su, sizeof (union sockunion));
  return dup;
}

void
sockunion_free (union sockunion *su)
{
  XFREE (MTYPE_SOCKUNION, su);
}