ipsec-tools/setkey/test-pfkey.c

   1 /*      $KAME: test-pfkey.c,v 1.4 2000/06/07 00:29:14 itojun 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 #include <sys/types.h>
  33 #include <sys/param.h>
  34 #include <sys/socket.h>
  35 #include <net/route.h>
  36 #include <netinet/in.h>
  37 #ifdef __APPLE__
  38 #include <System/net/pfkeyv2.h>
  39 #include <System/netkey/keydb.h>
  40 #include <System/netkey/key_var.h>
  41 #include <System/netkey/key_debug.h>
  42 #else
  43 #include <net/pfkeyv2.h>
  44 #include <netkey/keydb.h>
  45 #include <netkey/key_var.h>
  46 #include <netkey/key_debug.h>
  47 #endif
  48
  49 #include <stdio.h>
  50 #include <stdlib.h>
  51 #include <limits.h>
  52 #include <string.h>
  53 #include <ctype.h>
  54 #include <unistd.h>
  55 #include <errno.h>
  56 #include <netdb.h>
  57
  58 u_char m_buf[BUFSIZ];
  59 u_int m_len;
  60 char *pname;
  61
  62 void Usage __P((void));
  63 int sendkeymsg __P((void));
  64 void key_setsadbmsg __P((u_int));
  65 void key_setsadbsens __P((void));
  66 void key_setsadbprop __P((void));
  67 void key_setsadbid __P((u_int, caddr_t));
  68 void key_setsadblft __P((u_int, u_int));
  69 void key_setspirange __P((void));
  70 void key_setsadbkey __P((u_int, caddr_t));
  71 void key_setsadbsa __P((void));
  72 void key_setsadbaddr __P((u_int, u_int, caddr_t));
  73 void key_setsadbextbuf __P((caddr_t, int, caddr_t, int, caddr_t, int));
  74
  75 void
  76 Usage()
  77 {
  78         printf("Usage:\t%s number\n", pname);
  79         exit(0);
  80 }
  81
  82 int
  83 main(ac, av)
  84         int ac;
  85         char **av;
  86 {
  87         pname = *av;
  88
  89         if (ac == 1) Usage();
  90
  91         key_setsadbmsg(atoi(*(av+1)));
  92         sendkeymsg();
  93
  94         exit(0);
  95 }
  96
  97 /* %%% */
  98 int
  99 sendkeymsg()
 100 {
 101         u_char rbuf[1024 * 32]; /* XXX: Enough ? Should I do MSG_PEEK ? */
 102         int so, len;
 103
 104         if ((so = socket(PF_KEY, SOCK_RAW, PF_KEY_V2)) < 0) {
 105                 perror("socket(PF_KEY)");
 106                 goto end;
 107         }
 108 #if 0
 109     {
 110 #include <sys/time.h>
 111         struct timeval tv;
 112         tv.tv_sec = 1;
 113         tv.tv_usec = 0;
 114         if (setsockopt(so, SOL_SOCKET, SO_RCVTIMEO, &tv, sizeof(tv)) < 0) {
 115                 perror("setsockopt");
 116                 goto end;
 117         }
 118     }
 119 #endif
 120
 121         pfkey_sadump((struct sadb_msg *)m_buf);
 122
 123         if ((len = send(so, m_buf, m_len, 0)) < 0) {
 124                 perror("send");
 125                 goto end;
 126         }
 127
 128         if ((len = recv(so, rbuf, sizeof(rbuf), 0)) < 0) {
 129                 perror("recv");
 130                 goto end;
 131         }
 132
 133         pfkey_sadump((struct sadb_msg *)rbuf);
 134
 135 end:
 136         (void)close(so);
 137         return(0);
 138 }
 139
 140 void
 141 key_setsadbmsg(type)
 142         u_int type;
 143 {
 144         struct sadb_msg m_msg;
 145
 146         memset(&m_msg, 0, sizeof(m_msg));
 147         m_msg.sadb_msg_version = PF_KEY_V2;
 148         m_msg.sadb_msg_type = type;
 149         m_msg.sadb_msg_errno = 0;
 150         m_msg.sadb_msg_satype = SADB_SATYPE_ESP;
 151 #if 0
 152         m_msg.sadb_msg_reserved = 0;
 153 #endif
 154         m_msg.sadb_msg_seq = 0;
 155         m_msg.sadb_msg_pid = getpid();
 156
 157         m_len = sizeof(struct sadb_msg);
 158         memcpy(m_buf, &m_msg, m_len);
 159
 160         switch (type) {
 161         case SADB_GETSPI:
 162                 /*<base, address(SD), SPI range>*/
 163                 key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "10.0.3.4");
 164                 key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "127.0.0.1");
 165                 key_setspirange();
 166                 /*<base, SA(*), address(SD)>*/
 167                 break;
 168
 169         case SADB_ADD:
 170                 /* <base, SA, (lifetime(HSC),) address(SD), (address(P),)
 171                    key(AE), (identity(SD),) (sensitivity)> */
 172                 key_setsadbaddr(SADB_EXT_ADDRESS_PROXY, AF_INET6, "3ffe::1");
 173         case SADB_UPDATE:
 174                 key_setsadbsa();
 175                 key_setsadblft(SADB_EXT_LIFETIME_HARD, 10);
 176                 key_setsadblft(SADB_EXT_LIFETIME_SOFT, 5);
 177                 key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "192.168.1.1");
 178                 key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "10.0.3.4");
 179                 /* XXX key_setsadbkey(SADB_EXT_KEY_AUTH, "abcde"); */
 180                 key_setsadbkey(SADB_EXT_KEY_AUTH, "1234567812345678");
 181                 key_setsadbkey(SADB_EXT_KEY_ENCRYPT, "12345678");
 182                 key_setsadbid(SADB_EXT_IDENTITY_SRC, "hoge1234@hoge.com");
 183                 key_setsadbid(SADB_EXT_IDENTITY_DST, "hage5678@hage.net");
 184                 key_setsadbsens();
 185                 /* <base, SA, (lifetime(HSC),) address(SD), (address(P),)
 186                   (identity(SD),) (sensitivity)> */
 187                 break;
 188
 189         case SADB_DELETE:
 190                 /* <base, SA(*), address(SDP)> */
 191                 key_setsadbsa();
 192                 key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "192.168.1.1");
 193                 key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "10.0.3.4");
 194                 key_setsadbaddr(SADB_EXT_ADDRESS_PROXY, AF_INET6, "3ffe::1");
 195                 /* <base, SA(*), address(SDP)> */
 196                 break;
 197
 198         case SADB_GET:
 199                 /* <base, SA(*), address(SDP)> */
 200                 key_setsadbsa();
 201                 key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "192.168.1.1");
 202                 key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "10.0.3.4");
 203                 key_setsadbaddr(SADB_EXT_ADDRESS_PROXY, AF_INET6, "3ffe::1");
 204                 /* <base, SA, (lifetime(HSC),) address(SD), (address(P),)
 205                    key(AE), (identity(SD),) (sensitivity)> */
 206                 break;
 207
 208         case SADB_ACQUIRE:
 209                 /* <base, address(SD), (address(P),) (identity(SD),)
 210                    (sensitivity,) proposal> */
 211                 key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "192.168.1.1");
 212                 key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "10.0.3.4");
 213                 key_setsadbaddr(SADB_EXT_ADDRESS_PROXY, AF_INET6, "3ffe::1");
 214                 key_setsadbid(SADB_EXT_IDENTITY_SRC, "hoge1234@hoge.com");
 215                 key_setsadbid(SADB_EXT_IDENTITY_DST, "hage5678@hage.net");
 216                 key_setsadbsens();
 217                 key_setsadbprop();
 218                 /* <base, address(SD), (address(P),) (identity(SD),)
 219                    (sensitivity,) proposal> */
 220                 break;
 221
 222         case SADB_REGISTER:
 223                 /* <base> */
 224                 /* <base, supported> */
 225                 break;
 226
 227         case SADB_EXPIRE:
 228         case SADB_FLUSH:
 229                 break;
 230
 231         case SADB_DUMP:
 232                 break;
 233
 234         case SADB_X_PROMISC:
 235                 /* <base> */
 236                 /* <base, base(, others)> */
 237                 break;
 238
 239         case SADB_X_PCHANGE:
 240                 break;
 241
 242         /* for SPD management */
 243         case SADB_X_SPDFLUSH:
 244         case SADB_X_SPDDUMP:
 245                 break;
 246
 247         case SADB_X_SPDADD:
 248 #if 0
 249             {
 250                 struct sadb_x_policy m_policy;
 251
 252                 m_policy.sadb_x_policy_len = PFKEY_UNIT64(sizeof(m_policy));
 253                 m_policy.sadb_x_policy_exttype = SADB_X_EXT_POLICY;
 254                 m_policy.sadb_x_policy_type = SADB_X_PL_IPSEC;
 255                 m_policy.sadb_x_policy_esp_trans = 1;
 256                 m_policy.sadb_x_policy_ah_trans = 2;
 257                 m_policy.sadb_x_policy_esp_network = 3;
 258                 m_policy.sadb_x_policy_ah_network = 4;
 259                 m_policy.sadb_x_policy_reserved = 0;
 260
 261                 memcpy(m_buf + m_len, &m_policy, sizeof(struct sadb_x_policy));
 262                 m_len += sizeof(struct sadb_x_policy);
 263             }
 264 #endif
 265
 266         case SADB_X_SPDDELETE:
 267                 key_setsadbaddr(SADB_EXT_ADDRESS_SRC, AF_INET, "192.168.1.1");
 268                 key_setsadbaddr(SADB_EXT_ADDRESS_DST, AF_INET, "10.0.3.4");
 269                 break;
 270         }
 271
 272         ((struct sadb_msg *)m_buf)->sadb_msg_len = PFKEY_UNIT64(m_len);
 273
 274         return;
 275 }
 276
 277 void
 278 key_setsadbsens()
 279 {
 280         struct sadb_sens m_sens;
 281         u_char buf[64];
 282         u_int s, i, slen, ilen, len;
 283
 284         /* make sens & integ */
 285         s = htonl(0x01234567);
 286         i = htonl(0x89abcdef);
 287         slen = sizeof(s);
 288         ilen = sizeof(i);
 289         memcpy(buf, &s, slen);
 290         memcpy(buf + slen, &i, ilen);
 291
 292         len = sizeof(m_sens) + PFKEY_ALIGN8(slen) + PFKEY_ALIGN8(ilen);
 293         m_sens.sadb_sens_len = PFKEY_UNIT64(len);
 294         m_sens.sadb_sens_exttype = SADB_EXT_SENSITIVITY;
 295         m_sens.sadb_sens_dpd = 1;
 296         m_sens.sadb_sens_sens_level = 2;
 297         m_sens.sadb_sens_sens_len = PFKEY_ALIGN8(slen);
 298         m_sens.sadb_sens_integ_level = 3;
 299         m_sens.sadb_sens_integ_len = PFKEY_ALIGN8(ilen);
 300         m_sens.sadb_sens_reserved = 0;
 301
 302         key_setsadbextbuf(m_buf, m_len,
 303                         (caddr_t)&m_sens, sizeof(struct sadb_sens),
 304                         buf, slen + ilen);
 305         m_len += len;
 306
 307         return;
 308 }
 309
 310 void
 311 key_setsadbprop()
 312 {
 313         struct sadb_prop m_prop;
 314         struct sadb_comb *m_comb;
 315         u_char buf[256];
 316 #if defined(SADB_X_EALG_AESCBC) && defined(SADB_X_AALG_SHA2_256)
 317         u_int len = sizeof(m_prop) + sizeof(m_comb) * 3;
 318 #else
 319         u_int len = sizeof(m_prop) + sizeof(m_comb) * 2;
 320 #endif
 321
 322         /* make prop & comb */
 323         m_prop.sadb_prop_len = PFKEY_UNIT64(len);
 324         m_prop.sadb_prop_exttype = SADB_EXT_PROPOSAL;
 325         m_prop.sadb_prop_replay = 0;
 326         m_prop.sadb_prop_reserved[0] = 0;
 327         m_prop.sadb_prop_reserved[1] = 0;
 328         m_prop.sadb_prop_reserved[2] = 0;
 329
 330         /* the 1st is ESP DES-CBC HMAC-MD5 */
 331         m_comb = (struct sadb_comb *)buf;
 332         m_comb->sadb_comb_auth = SADB_AALG_MD5HMAC;
 333         m_comb->sadb_comb_encrypt = SADB_EALG_DESCBC;
 334         m_comb->sadb_comb_flags = 0;
 335         m_comb->sadb_comb_auth_minbits = 8;
 336         m_comb->sadb_comb_auth_maxbits = 96;
 337         m_comb->sadb_comb_encrypt_minbits = 64;
 338         m_comb->sadb_comb_encrypt_maxbits = 64;
 339         m_comb->sadb_comb_reserved = 0;
 340         m_comb->sadb_comb_soft_allocations = 0;
 341         m_comb->sadb_comb_hard_allocations = 0;
 342         m_comb->sadb_comb_soft_bytes = 0;
 343         m_comb->sadb_comb_hard_bytes = 0;
 344         m_comb->sadb_comb_soft_addtime = 0;
 345         m_comb->sadb_comb_hard_addtime = 0;
 346         m_comb->sadb_comb_soft_usetime = 0;
 347         m_comb->sadb_comb_hard_usetime = 0;
 348
 349         /* the 2st is ESP 3DES-CBC and AH HMAC-SHA1 */
 350         m_comb = (struct sadb_comb *)(buf + sizeof(*m_comb));
 351         m_comb->sadb_comb_auth = SADB_AALG_SHA1HMAC;
 352         m_comb->sadb_comb_encrypt = SADB_EALG_3DESCBC;
 353         m_comb->sadb_comb_flags = 0;
 354         m_comb->sadb_comb_auth_minbits = 8;
 355         m_comb->sadb_comb_auth_maxbits = 96;
 356         m_comb->sadb_comb_encrypt_minbits = 64;
 357         m_comb->sadb_comb_encrypt_maxbits = 64;
 358         m_comb->sadb_comb_reserved = 0;
 359         m_comb->sadb_comb_soft_allocations = 0;
 360         m_comb->sadb_comb_hard_allocations = 0;
 361         m_comb->sadb_comb_soft_bytes = 0;
 362         m_comb->sadb_comb_hard_bytes = 0;
 363         m_comb->sadb_comb_soft_addtime = 0;
 364         m_comb->sadb_comb_hard_addtime = 0;
 365         m_comb->sadb_comb_soft_usetime = 0;
 366         m_comb->sadb_comb_hard_usetime = 0;
 367
 368         key_setsadbextbuf(m_buf, m_len,
 369                         (caddr_t)&m_prop, sizeof(struct sadb_prop),
 370                         buf, sizeof(*m_comb) * 2);
 371         m_len += len;
 372
 373  #if defined(SADB_X_EALG_AESCBC) && defined(SADB_X_AALG_SHA2_256)
 374         /* the 3rd is ESP AES-CBC and AH HMAC-SHA256 */
 375         m_comb = (struct sadb_comb *)(buf + sizeof(*m_comb));
 376         m_comb->sadb_comb_auth = SADB_X_AALG_SHA2_256;
 377         m_comb->sadb_comb_encrypt = SADB_X_EALG_AESCBC;
 378         m_comb->sadb_comb_flags = 0;
 379         m_comb->sadb_comb_auth_minbits = 8;
 380         m_comb->sadb_comb_auth_maxbits = 96;
 381         m_comb->sadb_comb_encrypt_minbits = 128;
 382         m_comb->sadb_comb_encrypt_maxbits = 128;
 383         m_comb->sadb_comb_reserved = 0;
 384         m_comb->sadb_comb_soft_allocations = 0;
 385         m_comb->sadb_comb_hard_allocations = 0;
 386         m_comb->sadb_comb_soft_bytes = 0;
 387         m_comb->sadb_comb_hard_bytes = 0;
 388         m_comb->sadb_comb_soft_addtime = 0;
 389         m_comb->sadb_comb_hard_addtime = 0;
 390         m_comb->sadb_comb_soft_usetime = 0;
 391         m_comb->sadb_comb_hard_usetime = 0;
 392
 393         key_setsadbextbuf(m_buf, m_len,
 394                         (caddr_t)&m_prop, sizeof(struct sadb_prop),
 395                         buf, sizeof(*m_comb) * 3);
 396         m_len += len;
 397 #else
 398         key_setsadbextbuf(m_buf, m_len,
 399                         (caddr_t)&m_prop, sizeof(struct sadb_prop),
 400                         buf, sizeof(*m_comb) * 2);
 401         m_len += len;
 402 #endif
 403         return;
 404 }
 405
 406 void
 407 key_setsadbid(ext, str)
 408         u_int ext;
 409         caddr_t str;
 410 {
 411         struct sadb_ident m_id;
 412         u_int idlen = strlen(str), len;
 413
 414         len = sizeof(m_id) + PFKEY_ALIGN8(idlen);
 415         m_id.sadb_ident_len = PFKEY_UNIT64(len);
 416         m_id.sadb_ident_exttype = ext;
 417         m_id.sadb_ident_type = SADB_IDENTTYPE_USERFQDN;
 418         m_id.sadb_ident_reserved = 0;
 419         m_id.sadb_ident_id = getpid();
 420
 421         key_setsadbextbuf(m_buf, m_len,
 422                         (caddr_t)&m_id, sizeof(struct sadb_ident),
 423                         str, idlen);
 424         m_len += len;
 425
 426         return;
 427 }
 428
 429 void
 430 key_setsadblft(ext, time)
 431         u_int ext, time;
 432 {
 433         struct sadb_lifetime m_lft;
 434
 435         m_lft.sadb_lifetime_len = PFKEY_UNIT64(sizeof(m_lft));
 436         m_lft.sadb_lifetime_exttype = ext;
 437         m_lft.sadb_lifetime_allocations = 0x2;
 438         m_lft.sadb_lifetime_bytes = 0x1000;
 439         m_lft.sadb_lifetime_addtime = time;
 440         m_lft.sadb_lifetime_usetime = 0x0020;
 441
 442         memcpy(m_buf + m_len, &m_lft, sizeof(struct sadb_lifetime));
 443         m_len += sizeof(struct sadb_lifetime);
 444
 445         return;
 446 }
 447
 448 void
 449 key_setspirange()
 450 {
 451         struct sadb_spirange m_spi;
 452
 453         m_spi.sadb_spirange_len = PFKEY_UNIT64(sizeof(m_spi));
 454         m_spi.sadb_spirange_exttype = SADB_EXT_SPIRANGE;
 455         m_spi.sadb_spirange_min = 0x00001000;
 456         m_spi.sadb_spirange_max = 0x00002000;
 457         m_spi.sadb_spirange_reserved = 0;
 458
 459         memcpy(m_buf + m_len, &m_spi, sizeof(struct sadb_spirange));
 460         m_len += sizeof(struct sadb_spirange);
 461
 462         return;
 463 }
 464
 465 void
 466 key_setsadbkey(ext, str)
 467         u_int ext;
 468         caddr_t str;
 469 {
 470         struct sadb_key m_key;
 471         u_int keylen = strlen(str);
 472         u_int len;
 473
 474         len = sizeof(struct sadb_key) + PFKEY_ALIGN8(keylen);
 475         m_key.sadb_key_len = PFKEY_UNIT64(len);
 476         m_key.sadb_key_exttype = ext;
 477         m_key.sadb_key_bits = keylen * 8;
 478         m_key.sadb_key_reserved = 0;
 479
 480         key_setsadbextbuf(m_buf, m_len,
 481                         (caddr_t)&m_key, sizeof(struct sadb_key),
 482                         str, keylen);
 483         m_len += len;
 484
 485         return;
 486 }
 487
 488 void
 489 key_setsadbsa()
 490 {
 491         struct sadb_sa m_sa;
 492
 493         m_sa.sadb_sa_len = PFKEY_UNIT64(sizeof(struct sadb_sa));
 494         m_sa.sadb_sa_exttype = SADB_EXT_SA;
 495         m_sa.sadb_sa_spi = htonl(0x12345678);
 496         m_sa.sadb_sa_replay = 4;
 497         m_sa.sadb_sa_state = 0;
 498         m_sa.sadb_sa_auth = SADB_AALG_MD5HMAC;
 499         m_sa.sadb_sa_encrypt = SADB_EALG_DESCBC;
 500         m_sa.sadb_sa_flags = 0;
 501
 502         memcpy(m_buf + m_len, &m_sa, sizeof(struct sadb_sa));
 503         m_len += sizeof(struct sadb_sa);
 504
 505         return;
 506 }
 507
 508 void
 509 key_setsadbaddr(ext, af, str)
 510         u_int ext, af;
 511         caddr_t str;
 512 {
 513         struct sadb_address m_addr;
 514         u_int len;
 515         struct addrinfo hints, *res;
 516         const char *serv;
 517         int plen;
 518
 519         switch (af) {
 520         case AF_INET:
 521                 plen = sizeof(struct in_addr) << 3;
 522                 break;
 523         case AF_INET6:
 524                 plen = sizeof(struct in6_addr) << 3;
 525                 break;
 526         default:
 527                 /* XXX bark */
 528                 exit(1);
 529         }
 530
 531         /* make sockaddr buffer */
 532         memset(&hints, 0, sizeof(hints));
 533         hints.ai_family = af;
 534         hints.ai_socktype = SOCK_DGRAM; /*dummy*/
 535         hints.ai_flags = AI_NUMERICHOST;
 536         serv = (ext == SADB_EXT_ADDRESS_PROXY ? "0" : "4660");  /*0x1234*/
 537         if (getaddrinfo(str, serv, &hints, &res) != 0 || res->ai_next) {
 538                 /* XXX bark */
 539                 exit(1);
 540         }
 541
 542         len = sizeof(struct sadb_address) + PFKEY_ALIGN8(res->ai_addrlen);
 543         m_addr.sadb_address_len = PFKEY_UNIT64(len);
 544         m_addr.sadb_address_exttype = ext;
 545         m_addr.sadb_address_proto =
 546                 (ext == SADB_EXT_ADDRESS_PROXY ? 0 : IPPROTO_TCP);
 547         m_addr.sadb_address_prefixlen = plen;
 548         m_addr.sadb_address_reserved = 0;
 549
 550         key_setsadbextbuf(m_buf, m_len,
 551                         (caddr_t)&m_addr, sizeof(struct sadb_address),
 552                         (caddr_t)res->ai_addr, res->ai_addrlen);
 553         m_len += len;
 554
 555         freeaddrinfo(res);
 556
 557         return;
 558 }
 559
 560 void
 561 key_setsadbextbuf(dst, off, ebuf, elen, vbuf, vlen)
 562         caddr_t dst, ebuf, vbuf;
 563         int off, elen, vlen;
 564 {
 565         memset(dst + off, 0, elen + vlen);
 566         memcpy(dst + off, (caddr_t)ebuf, elen);
 567         memcpy(dst + off + elen, vbuf, vlen);
 568
 569         return;
 570 }
 571