projects / apple / ipsec.git / blame
| Commit | Line | Data |
|---|---|---|
| d1e348cf A |
1 | /* $NetBSD: isakmp_base.c,v 1.7 2006/10/02 21:51:33 manu Exp $ */ |
| 2 | ||
| 52b7d2ce A |
3 | /* $KAME: isakmp_base.c,v 1.49 2003/11/13 02:30:20 sakane Exp $ */ |
| 4 | ||
| 5 | /* | |
| 6 | * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. | |
| 7 | * All rights reserved. | |
| 8 | * | |
| 9 | * Redistribution and use in source and binary forms, with or without | |
| 10 | * modification, are permitted provided that the following conditions | |
| 11 | * are met: | |
| 12 | * 1. Redistributions of source code must retain the above copyright | |
| 13 | * notice, this list of conditions and the following disclaimer. | |
| 14 | * 2. Redistributions in binary form must reproduce the above copyright | |
| 15 | * notice, this list of conditions and the following disclaimer in the | |
| 16 | * documentation and/or other materials provided with the distribution. | |
| 17 | * 3. Neither the name of the project nor the names of its contributors | |
| 18 | * may be used to endorse or promote products derived from this software | |
| 19 | * without specific prior written permission. | |
| 20 | * | |
| 21 | * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND | |
| 22 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
| 23 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
| 24 | * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE | |
| 25 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
| 26 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
| 27 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 28 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
| 29 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
| 30 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
| 31 | * SUCH DAMAGE. | |
| 32 | */ | |
| 33 | ||
| 34 | /* Base Exchange (Base Mode) */ | |
| 35 | ||
| 36 | #include "config.h" | |
| 37 | ||
| 38 | #include <sys/types.h> | |
| 39 | #include <sys/param.h> | |
| 40 | ||
| 41 | #include <stdlib.h> | |
| 42 | #include <stdio.h> | |
| 43 | #include <string.h> | |
| 44 | #include <errno.h> | |
| 45 | #if TIME_WITH_SYS_TIME | |
| 46 | # include <sys/time.h> | |
| 47 | # include <time.h> | |
| 48 | #else | |
| 49 | # if HAVE_SYS_TIME_H | |
| 50 | # include <sys/time.h> | |
| 51 | # else | |
| 52 | # include <time.h> | |
| 53 | # endif | |
| 54 | #endif | |
| 55 | ||
| 56 | #include "var.h" | |
| 57 | #include "misc.h" | |
| 58 | #include "vmbuf.h" | |
| 59 | #include "plog.h" | |
| 60 | #include "sockmisc.h" | |
| 61 | #include "schedule.h" | |
| 62 | #include "debug.h" | |
| 63 | ||
| d1e348cf A |
64 | #ifdef ENABLE_HYBRID |
| 65 | #include <resolv.h> | |
| 66 | #endif | |
| 67 | ||
| 52b7d2ce A |
68 | #include "localconf.h" |
| 69 | #include "remoteconf.h" | |
| 70 | #include "isakmp_var.h" | |
| 71 | #include "isakmp.h" | |
| 72 | #include "evt.h" | |
| 73 | #include "oakley.h" | |
| 74 | #include "handler.h" | |
| 75 | #include "ipsec_doi.h" | |
| 76 | #include "crypto_openssl.h" | |
| 77 | #include "pfkey.h" | |
| 78 | #include "isakmp_base.h" | |
| 79 | #include "isakmp_inf.h" | |
| 80 | #include "vendorid.h" | |
| 81 | #ifdef ENABLE_NATT | |
| 82 | #include "nattraversal.h" | |
| 83 | #endif | |
| 84 | #ifdef ENABLE_FRAG | |
| 85 | #include "isakmp_frag.h" | |
| 86 | #endif | |
| d1e348cf A |
87 | #ifdef ENABLE_HYBRID |
| 88 | #include "isakmp_xauth.h" | |
| 89 | #include "isakmp_cfg.h" | |
| 90 | #endif | |
| 52b7d2ce A |
91 | #include "vpn_control.h" |
| 92 | #include "vpn_control_var.h" | |
| 93 | ||
| 94 | /* %%% | |
| 95 | * begin Identity Protection Mode as initiator. | |
| 96 | */ | |
| 97 | /* | |
| 98 | * send to responder | |
| 99 | * psk: HDR, SA, Idii, Ni_b | |
| 100 | * sig: HDR, SA, Idii, Ni_b | |
| 101 | * rsa: HDR, SA, [HASH(1),] <IDii_b>Pubkey_r, <Ni_b>Pubkey_r | |
| 102 | * rev: HDR, SA, [HASH(1),] <Ni_b>Pubkey_r, <IDii_b>Ke_i | |
| 103 | */ | |
| 104 | int | |
| 105 | base_i1send(iph1, msg) | |
| 106 | struct ph1handle *iph1; | |
| 107 | vchar_t *msg; /* must be null */ | |
| 108 | { | |
| 109 | struct payload_list *plist = NULL; | |
| 110 | int error = -1; | |
| 111 | #ifdef ENABLE_NATT | |
| 112 | vchar_t *vid_natt[MAX_NATT_VID_COUNT] = { NULL }; | |
| 113 | int i, vid_natt_i = 0; | |
| 114 | #endif | |
| 115 | #ifdef ENABLE_FRAG | |
| 116 | vchar_t *vid_frag = NULL; | |
| 117 | #endif | |
| d1e348cf A |
118 | #ifdef ENABLE_HYBRID |
| 119 | vchar_t *vid_xauth = NULL; | |
| 120 | vchar_t *vid_unity = NULL; | |
| 121 | #endif | |
| 122 | #ifdef ENABLE_DPD | |
| 123 | vchar_t *vid_dpd = NULL; | |
| 124 | #endif | |
| 125 | ||
| 52b7d2ce A |
126 | |
| 127 | /* validity check */ | |
| 128 | if (msg != NULL) { | |
| 129 | plog(LLV_ERROR, LOCATION, NULL, | |
| 130 | "msg has to be NULL in this function.\n"); | |
| 131 | goto end; | |
| 132 | } | |
| 133 | if (iph1->status != PHASE1ST_START) { | |
| 134 | plog(LLV_ERROR, LOCATION, NULL, | |
| 135 | "status mismatched %d.\n", iph1->status); | |
| 136 | goto end; | |
| 137 | } | |
| 138 | ||
| 139 | /* create isakmp index */ | |
| 140 | memset(&iph1->index, 0, sizeof(iph1->index)); | |
| 141 | isakmp_newcookie((caddr_t)&iph1->index, iph1->remote, iph1->local); | |
| 142 | ||
| 143 | /* make ID payload into isakmp status */ | |
| 144 | if (ipsecdoi_setid1(iph1) < 0) | |
| 145 | goto end; | |
| 146 | ||
| 147 | /* create SA payload for my proposal */ | |
| 148 | iph1->sa = ipsecdoi_setph1proposal(iph1->rmconf->proposal); | |
| 149 | if (iph1->sa == NULL) | |
| 150 | goto end; | |
| 151 | ||
| 152 | /* generate NONCE value */ | |
| 153 | iph1->nonce = eay_set_random(iph1->rmconf->nonce_size); | |
| 154 | if (iph1->nonce == NULL) | |
| 155 | goto end; | |
| 156 | ||
| d1e348cf A |
157 | #ifdef ENABLE_HYBRID |
| 158 | /* Do we need Xauth VID? */ | |
| 159 | switch (RMAUTHMETHOD(iph1)) { | |
| 160 | case FICTIVE_AUTH_METHOD_XAUTH_PSKEY_I: | |
| 161 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I: | |
| 162 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_I: | |
| 163 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I: | |
| 164 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_I: | |
| 165 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_I: | |
| 166 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_I: | |
| 167 | if ((vid_xauth = set_vendorid(VENDORID_XAUTH)) == NULL) | |
| 168 | plog(LLV_ERROR, LOCATION, NULL, | |
| 169 | "Xauth vendor ID generation failed\n"); | |
| 170 | ||
| 171 | if ((vid_unity = set_vendorid(VENDORID_UNITY)) == NULL) | |
| 172 | plog(LLV_ERROR, LOCATION, NULL, | |
| 173 | "Unity vendor ID generation failed\n"); | |
| 174 | break; | |
| 175 | default: | |
| 176 | break; | |
| 177 | } | |
| 178 | #endif | |
| 52b7d2ce A |
179 | #ifdef ENABLE_FRAG |
| 180 | if (iph1->rmconf->ike_frag) { | |
| 181 | vid_frag = set_vendorid(VENDORID_FRAG); | |
| 182 | if (vid_frag != NULL) | |
| 183 | vid_frag = isakmp_frag_addcap(vid_frag, | |
| 184 | VENDORID_FRAG_BASE); | |
| 185 | if (vid_frag == NULL) | |
| 186 | plog(LLV_ERROR, LOCATION, NULL, | |
| 187 | "Frag vendorID construction failed\n"); | |
| 188 | } | |
| 189 | #endif | |
| 190 | #ifdef ENABLE_NATT | |
| 191 | /* Is NAT-T support allowed in the config file? */ | |
| 192 | if (iph1->rmconf->nat_traversal) { | |
| 193 | /* Advertise NAT-T capability */ | |
| 194 | memset (vid_natt, 0, sizeof (vid_natt)); | |
| 195 | #ifdef VENDORID_NATT_00 | |
| 196 | if ((vid_natt[vid_natt_i] = set_vendorid(VENDORID_NATT_00)) != NULL) | |
| 197 | vid_natt_i++; | |
| 198 | #endif | |
| 199 | #ifdef VENDORID_NATT_02 | |
| 200 | if ((vid_natt[vid_natt_i] = set_vendorid(VENDORID_NATT_02)) != NULL) | |
| 201 | vid_natt_i++; | |
| 202 | #endif | |
| 203 | #ifdef VENDORID_NATT_02_N | |
| 204 | if ((vid_natt[vid_natt_i] = set_vendorid(VENDORID_NATT_02_N)) != NULL) | |
| 205 | vid_natt_i++; | |
| 206 | #endif | |
| 207 | #ifdef VENDORID_NATT_RFC | |
| 208 | if ((vid_natt[vid_natt_i] = set_vendorid(VENDORID_NATT_RFC)) != NULL) | |
| 209 | vid_natt_i++; | |
| 210 | #endif | |
| 211 | } | |
| 212 | #endif | |
| 213 | ||
| 214 | /* set SA payload to propose */ | |
| 215 | plist = isakmp_plist_append(plist, iph1->sa, ISAKMP_NPTYPE_SA); | |
| 216 | ||
| 217 | /* create isakmp ID payload */ | |
| 218 | plist = isakmp_plist_append(plist, iph1->id, ISAKMP_NPTYPE_ID); | |
| 219 | ||
| 220 | /* create isakmp NONCE payload */ | |
| 221 | plist = isakmp_plist_append(plist, iph1->nonce, ISAKMP_NPTYPE_NONCE); | |
| 222 | ||
| 223 | #ifdef ENABLE_FRAG | |
| 224 | if (vid_frag) | |
| 225 | plist = isakmp_plist_append(plist, vid_frag, ISAKMP_NPTYPE_VID); | |
| 226 | #endif | |
| d1e348cf A |
227 | #ifdef ENABLE_HYBRID |
| 228 | if (vid_xauth) | |
| 229 | plist = isakmp_plist_append(plist, | |
| 230 | vid_xauth, ISAKMP_NPTYPE_VID); | |
| 231 | if (vid_unity) | |
| 232 | plist = isakmp_plist_append(plist, | |
| 233 | vid_unity, ISAKMP_NPTYPE_VID); | |
| 234 | #endif | |
| 235 | #ifdef ENABLE_DPD | |
| 236 | if (iph1->rmconf->dpd) { | |
| 237 | vid_dpd = set_vendorid(VENDORID_DPD); | |
| 238 | if (vid_dpd != NULL) | |
| 239 | plist = isakmp_plist_append(plist, vid_dpd, ISAKMP_NPTYPE_VID); | |
| 240 | } | |
| 241 | #endif | |
| 52b7d2ce A |
242 | #ifdef ENABLE_NATT |
| 243 | /* set VID payload for NAT-T */ | |
| 244 | for (i = 0; i < vid_natt_i; i++) | |
| 245 | plist = isakmp_plist_append(plist, vid_natt[i], ISAKMP_NPTYPE_VID); | |
| 52b7d2ce | 246 | #endif |
| d1e348cf A |
247 | iph1->sendbuf = isakmp_plist_set_all (&plist, iph1); |
| 248 | ||
| 52b7d2ce A |
249 | |
| 250 | #ifdef HAVE_PRINT_ISAKMP_C | |
| 251 | isakmp_printpacket(iph1->sendbuf, iph1->local, iph1->remote, 0); | |
| 252 | #endif | |
| 253 | ||
| 254 | /* send the packet, add to the schedule to resend */ | |
| 255 | iph1->retry_counter = iph1->rmconf->retry_counter; | |
| 256 | if (isakmp_ph1resend(iph1) == -1) | |
| 257 | goto end; | |
| 258 | ||
| 259 | iph1->status = PHASE1ST_MSG1SENT; | |
| 260 | ||
| 261 | error = 0; | |
| 262 | ||
| 263 | end: | |
| 264 | #ifdef ENABLE_FRAG | |
| 265 | if (vid_frag) | |
| 266 | vfree(vid_frag); | |
| 267 | #endif | |
| 268 | #ifdef ENABLE_NATT | |
| 269 | for (i = 0; i < vid_natt_i; i++) | |
| 270 | vfree(vid_natt[i]); | |
| 271 | #endif | |
| d1e348cf A |
272 | #ifdef ENABLE_HYBRID |
| 273 | if (vid_xauth != NULL) | |
| 274 | vfree(vid_xauth); | |
| 275 | if (vid_unity != NULL) | |
| 276 | vfree(vid_unity); | |
| 277 | #endif | |
| 278 | #ifdef ENABLE_DPD | |
| 279 | if (vid_dpd != NULL) | |
| 280 | vfree(vid_dpd); | |
| 281 | #endif | |
| 52b7d2ce A |
282 | |
| 283 | return error; | |
| 284 | } | |
| 285 | ||
| 286 | /* | |
| 287 | * receive from responder | |
| 288 | * psk: HDR, SA, Idir, Nr_b | |
| 289 | * sig: HDR, SA, Idir, Nr_b, [ CR ] | |
| 290 | * rsa: HDR, SA, <IDir_b>PubKey_i, <Nr_b>PubKey_i | |
| 291 | * rev: HDR, SA, <Nr_b>PubKey_i, <IDir_b>Ke_r | |
| 292 | */ | |
| 293 | int | |
| 294 | base_i2recv(iph1, msg) | |
| 295 | struct ph1handle *iph1; | |
| 296 | vchar_t *msg; | |
| 297 | { | |
| 298 | vchar_t *pbuf = NULL; | |
| 299 | struct isakmp_parse_t *pa; | |
| 300 | vchar_t *satmp = NULL; | |
| 301 | int error = -1; | |
| 302 | int vid_numeric; | |
| d1e348cf A |
303 | #ifdef ENABLE_HYBRID |
| 304 | vchar_t *unity_vid; | |
| 305 | vchar_t *xauth_vid; | |
| 306 | #endif | |
| 52b7d2ce A |
307 | |
| 308 | /* validity check */ | |
| 309 | if (iph1->status != PHASE1ST_MSG1SENT) { | |
| 310 | plog(LLV_ERROR, LOCATION, NULL, | |
| 311 | "status mismatched %d.\n", iph1->status); | |
| 312 | goto end; | |
| 313 | } | |
| 314 | ||
| 315 | /* validate the type of next payload */ | |
| 316 | pbuf = isakmp_parse(msg); | |
| 317 | if (pbuf == NULL) | |
| 318 | goto end; | |
| 319 | pa = (struct isakmp_parse_t *)pbuf->v; | |
| 320 | ||
| 321 | /* SA payload is fixed postion */ | |
| 322 | if (pa->type != ISAKMP_NPTYPE_SA) { | |
| 323 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 324 | "received invalid next payload type %d, " | |
| 325 | "expecting %d.\n", | |
| 326 | pa->type, ISAKMP_NPTYPE_SA); | |
| 327 | goto end; | |
| 328 | } | |
| 329 | if (isakmp_p2ph(&satmp, pa->ptr) < 0) | |
| 330 | goto end; | |
| 331 | pa++; | |
| 332 | ||
| 333 | for (/*nothing*/; | |
| 334 | pa->type != ISAKMP_NPTYPE_NONE; | |
| 335 | pa++) { | |
| 336 | ||
| 337 | switch (pa->type) { | |
| 338 | case ISAKMP_NPTYPE_NONCE: | |
| 339 | if (isakmp_p2ph(&iph1->nonce_p, pa->ptr) < 0) | |
| 340 | goto end; | |
| 341 | break; | |
| 342 | case ISAKMP_NPTYPE_ID: | |
| 343 | if (isakmp_p2ph(&iph1->id_p, pa->ptr) < 0) | |
| 344 | goto end; | |
| 345 | break; | |
| 346 | case ISAKMP_NPTYPE_VID: | |
| 347 | vid_numeric = check_vendorid(pa->ptr); | |
| 348 | #ifdef ENABLE_NATT | |
| 349 | if (iph1->rmconf->nat_traversal && natt_vendorid(vid_numeric)) | |
| 350 | natt_handle_vendorid(iph1, vid_numeric); | |
| d1e348cf A |
351 | #endif |
| 352 | #ifdef ENABLE_HYBRID | |
| 353 | switch (vid_numeric) { | |
| 354 | case VENDORID_XAUTH: | |
| 355 | iph1->mode_cfg->flags |= | |
| 356 | ISAKMP_CFG_VENDORID_XAUTH; | |
| 357 | break; | |
| 358 | ||
| 359 | case VENDORID_UNITY: | |
| 360 | iph1->mode_cfg->flags |= | |
| 361 | ISAKMP_CFG_VENDORID_UNITY; | |
| 362 | break; | |
| 363 | ||
| 364 | default: | |
| 365 | break; | |
| 366 | } | |
| 367 | #endif | |
| 368 | #ifdef ENABLE_DPD | |
| 369 | if (vid_numeric == VENDORID_DPD && iph1->rmconf->dpd) { | |
| 370 | iph1->dpd_support=1; | |
| 371 | plog(LLV_DEBUG, LOCATION, NULL, | |
| 372 | "remote supports DPD\n"); | |
| 373 | } | |
| 52b7d2ce A |
374 | #endif |
| 375 | break; | |
| 376 | default: | |
| 377 | /* don't send information, see ident_r1recv() */ | |
| 378 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 379 | "ignore the packet, " | |
| 380 | "received unexpecting payload type %d.\n", | |
| 381 | pa->type); | |
| 382 | goto end; | |
| 383 | } | |
| 384 | } | |
| 385 | ||
| 386 | if (iph1->nonce_p == NULL || iph1->id_p == NULL) { | |
| 387 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 388 | "few isakmp message received.\n"); | |
| 389 | goto end; | |
| 390 | } | |
| 391 | ||
| 392 | /* verify identifier */ | |
| 393 | if (ipsecdoi_checkid1(iph1) != 0) { | |
| 394 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 395 | "invalid ID payload.\n"); | |
| 396 | goto end; | |
| 397 | } | |
| 398 | ||
| 399 | #ifdef ENABLE_NATT | |
| 80318cb7 | 400 | if (NATT_AVAILABLE(iph1)) { |
| 52b7d2ce A |
401 | plog(LLV_INFO, LOCATION, iph1->remote, |
| 402 | "Selected NAT-T version: %s\n", | |
| 403 | vid_string_by_id(iph1->natt_options->version)); | |
| 80318cb7 A |
404 | ike_session_update_natt_version(iph1); |
| 405 | } | |
| 52b7d2ce A |
406 | #endif |
| 407 | ||
| 408 | /* check SA payload and set approval SA for use */ | |
| 409 | if (ipsecdoi_checkph1proposal(satmp, iph1) < 0) { | |
| 410 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 411 | "failed to get valid proposal.\n"); | |
| 412 | /* XXX send information */ | |
| 413 | goto end; | |
| 414 | } | |
| 415 | VPTRINIT(iph1->sa_ret); | |
| 416 | ||
| 417 | iph1->status = PHASE1ST_MSG2RECEIVED; | |
| 418 | ||
| 419 | #ifdef ENABLE_VPNCONTROL_PORT | |
| 420 | vpncontrol_notify_phase_change(1, FROM_REMOTE, iph1, NULL); | |
| 421 | #endif | |
| 422 | ||
| 423 | error = 0; | |
| 424 | ||
| 425 | end: | |
| 426 | if (pbuf) | |
| 427 | vfree(pbuf); | |
| 428 | if (satmp) | |
| 429 | vfree(satmp); | |
| 430 | ||
| 431 | if (error) { | |
| 432 | VPTRINIT(iph1->nonce_p); | |
| 433 | VPTRINIT(iph1->id_p); | |
| 434 | } | |
| 435 | ||
| 436 | return error; | |
| 437 | } | |
| 438 | ||
| 439 | /* | |
| 440 | * send to responder | |
| 441 | * psk: HDR, KE, HASH_I | |
| 442 | * sig: HDR, KE, [ CR, ] [CERT,] SIG_I | |
| 443 | * rsa: HDR, KE, HASH_I | |
| 444 | * rev: HDR, <KE>Ke_i, HASH_I | |
| 445 | */ | |
| 446 | int | |
| 447 | base_i2send(iph1, msg) | |
| 448 | struct ph1handle *iph1; | |
| 449 | vchar_t *msg; | |
| 450 | { | |
| 451 | struct payload_list *plist = NULL; | |
| 452 | vchar_t *vid = NULL; | |
| 453 | int need_cert = 0; | |
| 454 | int error = -1; | |
| 455 | ||
| 456 | /* validity check */ | |
| 457 | if (iph1->status != PHASE1ST_MSG2RECEIVED) { | |
| 458 | plog(LLV_ERROR, LOCATION, NULL, | |
| 459 | "status mismatched %d.\n", iph1->status); | |
| 460 | goto end; | |
| 461 | } | |
| 462 | ||
| 463 | /* fix isakmp index */ | |
| 464 | memcpy(&iph1->index.r_ck, &((struct isakmp *)msg->v)->r_ck, | |
| 465 | sizeof(cookie_t)); | |
| 466 | ||
| 467 | /* generate DH public value */ | |
| 468 | if (oakley_dh_generate(iph1->approval->dhgrp, | |
| 469 | &iph1->dhpub, &iph1->dhpriv) < 0) | |
| 470 | goto end; | |
| 471 | ||
| 472 | /* generate SKEYID to compute hash if not signature mode */ | |
| d1e348cf A |
473 | switch (AUTHMETHOD(iph1)) { |
| 474 | case OAKLEY_ATTR_AUTH_METHOD_RSASIG: | |
| 475 | case OAKLEY_ATTR_AUTH_METHOD_DSSSIG: | |
| 476 | #ifdef ENABLE_HYBRID | |
| 477 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_I: | |
| 478 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I: | |
| 479 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_I: | |
| 480 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I: | |
| 481 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_I: | |
| 482 | #endif | |
| 483 | break; | |
| 484 | default: | |
| 52b7d2ce A |
485 | if (oakley_skeyid(iph1) < 0) |
| 486 | goto end; | |
| d1e348cf | 487 | break; |
| 52b7d2ce A |
488 | } |
| 489 | ||
| 490 | /* generate HASH to send */ | |
| 491 | plog(LLV_DEBUG, LOCATION, NULL, "generate HASH_I\n"); | |
| 492 | iph1->hash = oakley_ph1hash_base_i(iph1, GENERATE); | |
| 493 | if (iph1->hash == NULL) | |
| 494 | goto end; | |
| d1e348cf | 495 | switch (AUTHMETHOD(iph1)) { |
| 52b7d2ce | 496 | case OAKLEY_ATTR_AUTH_METHOD_PSKEY: |
| d1e348cf A |
497 | #ifdef ENABLE_HYBRID |
| 498 | case FICTIVE_AUTH_METHOD_XAUTH_PSKEY_I: | |
| 499 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I: | |
| 500 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_I: | |
| 501 | #endif | |
| 52b7d2ce A |
502 | vid = set_vendorid(iph1->approval->vendorid); |
| 503 | ||
| 504 | /* create isakmp KE payload */ | |
| 505 | plist = isakmp_plist_append(plist, iph1->dhpub, ISAKMP_NPTYPE_KE); | |
| 506 | ||
| 507 | /* create isakmp HASH payload */ | |
| 508 | plist = isakmp_plist_append(plist, iph1->hash, ISAKMP_NPTYPE_HASH); | |
| 509 | ||
| 510 | /* append vendor id, if needed */ | |
| 511 | if (vid) | |
| 512 | plist = isakmp_plist_append(plist, vid, ISAKMP_NPTYPE_VID); | |
| 513 | break; | |
| 514 | case OAKLEY_ATTR_AUTH_METHOD_DSSSIG: | |
| 515 | case OAKLEY_ATTR_AUTH_METHOD_RSASIG: | |
| d1e348cf A |
516 | #ifdef ENABLE_HYBRID |
| 517 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I: | |
| 518 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_I: | |
| 519 | #endif | |
| 52b7d2ce A |
520 | /* XXX if there is CR or not ? */ |
| 521 | ||
| 522 | if (oakley_getmycert(iph1) < 0) | |
| 523 | goto end; | |
| 524 | ||
| 525 | if (oakley_getsign(iph1) < 0) | |
| 526 | goto end; | |
| 527 | ||
| 528 | if (iph1->cert && iph1->rmconf->send_cert) | |
| 529 | need_cert = 1; | |
| 530 | ||
| 531 | /* create isakmp KE payload */ | |
| 532 | plist = isakmp_plist_append(plist, iph1->dhpub, ISAKMP_NPTYPE_KE); | |
| 533 | ||
| 534 | /* add CERT payload if there */ | |
| 535 | if (need_cert) | |
| 536 | plist = isakmp_plist_append(plist, iph1->cert->pl, ISAKMP_NPTYPE_CERT); | |
| 537 | ||
| 538 | /* add SIG payload */ | |
| 539 | plist = isakmp_plist_append(plist, iph1->sig, ISAKMP_NPTYPE_SIG); | |
| 540 | break; | |
| d1e348cf | 541 | #ifdef HAVE_GSSAPI |
| 52b7d2ce A |
542 | case OAKLEY_ATTR_AUTH_METHOD_GSSAPI_KRB: |
| 543 | /* ... */ | |
| 544 | break; | |
| d1e348cf | 545 | #endif |
| 52b7d2ce A |
546 | case OAKLEY_ATTR_AUTH_METHOD_RSAENC: |
| 547 | case OAKLEY_ATTR_AUTH_METHOD_RSAREV: | |
| d1e348cf A |
548 | #ifdef ENABLE_HYBRID |
| 549 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_I: | |
| 550 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_I: | |
| 551 | #endif | |
| 52b7d2ce A |
552 | break; |
| 553 | } | |
| 554 | ||
| 555 | #ifdef ENABLE_NATT | |
| 556 | /* generate NAT-D payloads */ | |
| 557 | if (NATT_AVAILABLE(iph1)) | |
| 558 | { | |
| 559 | vchar_t *natd[2] = { NULL, NULL }; | |
| 560 | ||
| 561 | plog (LLV_INFO, LOCATION, NULL, "Adding remote and local NAT-D payloads.\n"); | |
| 562 | if ((natd[0] = natt_hash_addr (iph1, iph1->remote)) == NULL) { | |
| 563 | plog(LLV_ERROR, LOCATION, NULL, | |
| 564 | "NAT-D hashing failed for %s\n", saddr2str(iph1->remote)); | |
| 565 | goto end; | |
| 566 | } | |
| 567 | ||
| 568 | if ((natd[1] = natt_hash_addr (iph1, iph1->local)) == NULL) { | |
| 569 | plog(LLV_ERROR, LOCATION, NULL, | |
| 570 | "NAT-D hashing failed for %s\n", saddr2str(iph1->local)); | |
| 571 | goto end; | |
| 572 | } | |
| 573 | ||
| 574 | #ifdef __APPLE__ | |
| 575 | /* old Apple version sends natd payloads in the wrong order */ | |
| 576 | if (iph1->natt_options->version == VENDORID_NATT_APPLE) { | |
| 577 | plist = isakmp_plist_append(plist, natd[1], iph1->natt_options->payload_nat_d); | |
| 578 | plist = isakmp_plist_append(plist, natd[0], iph1->natt_options->payload_nat_d); | |
| 579 | } else | |
| 580 | #endif | |
| 581 | { | |
| 582 | plist = isakmp_plist_append(plist, natd[0], iph1->natt_options->payload_nat_d); | |
| 583 | plist = isakmp_plist_append(plist, natd[1], iph1->natt_options->payload_nat_d); | |
| 584 | } | |
| 585 | } | |
| 586 | #endif | |
| 587 | ||
| 588 | iph1->sendbuf = isakmp_plist_set_all (&plist, iph1); | |
| 589 | ||
| 590 | #ifdef HAVE_PRINT_ISAKMP_C | |
| 591 | isakmp_printpacket(iph1->sendbuf, iph1->local, iph1->remote, 0); | |
| 592 | #endif | |
| 593 | ||
| 594 | /* send the packet, add to the schedule to resend */ | |
| 595 | iph1->retry_counter = iph1->rmconf->retry_counter; | |
| 596 | if (isakmp_ph1resend(iph1) == -1) | |
| 597 | goto end; | |
| 598 | ||
| 599 | /* the sending message is added to the received-list. */ | |
| d1e348cf A |
600 | if (add_recvdpkt(iph1->remote, iph1->local, iph1->sendbuf, msg, |
| 601 | PH1_NON_ESP_EXTRA_LEN(iph1)) == -1) { | |
| 52b7d2ce A |
602 | plog(LLV_ERROR , LOCATION, NULL, |
| 603 | "failed to add a response packet to the tree.\n"); | |
| 604 | goto end; | |
| 605 | } | |
| 606 | ||
| 607 | iph1->status = PHASE1ST_MSG2SENT; | |
| 608 | ||
| 609 | error = 0; | |
| 610 | ||
| 611 | end: | |
| 612 | if (vid) | |
| 613 | vfree(vid); | |
| 614 | return error; | |
| 615 | } | |
| 616 | ||
| 617 | /* | |
| 618 | * receive from responder | |
| 619 | * psk: HDR, KE, HASH_R | |
| 620 | * sig: HDR, KE, [CERT,] SIG_R | |
| 621 | * rsa: HDR, KE, HASH_R | |
| 622 | * rev: HDR, <KE>_Ke_r, HASH_R | |
| 623 | */ | |
| 624 | int | |
| 625 | base_i3recv(iph1, msg) | |
| 626 | struct ph1handle *iph1; | |
| 627 | vchar_t *msg; | |
| 628 | { | |
| 629 | vchar_t *pbuf = NULL; | |
| 630 | struct isakmp_parse_t *pa; | |
| 631 | int error = -1; | |
| 632 | int ptype; | |
| 633 | #ifdef ENABLE_NATT | |
| 634 | vchar_t *natd_received; | |
| 635 | int natd_seq = 0, natd_verified; | |
| 636 | #endif | |
| 637 | ||
| 638 | /* validity check */ | |
| 639 | if (iph1->status != PHASE1ST_MSG2SENT) { | |
| 640 | plog(LLV_ERROR, LOCATION, NULL, | |
| 641 | "status mismatched %d.\n", iph1->status); | |
| 642 | goto end; | |
| 643 | } | |
| 644 | ||
| 645 | /* validate the type of next payload */ | |
| 646 | pbuf = isakmp_parse(msg); | |
| 647 | if (pbuf == NULL) | |
| 648 | goto end; | |
| 649 | ||
| 650 | for (pa = (struct isakmp_parse_t *)pbuf->v; | |
| 651 | pa->type != ISAKMP_NPTYPE_NONE; | |
| 652 | pa++) { | |
| 653 | ||
| 654 | switch (pa->type) { | |
| 655 | case ISAKMP_NPTYPE_KE: | |
| 656 | if (isakmp_p2ph(&iph1->dhpub_p, pa->ptr) < 0) | |
| 657 | goto end; | |
| 658 | break; | |
| 659 | case ISAKMP_NPTYPE_HASH: | |
| 660 | iph1->pl_hash = (struct isakmp_pl_hash *)pa->ptr; | |
| 661 | break; | |
| 662 | case ISAKMP_NPTYPE_CERT: | |
| 663 | if (oakley_savecert(iph1, pa->ptr) < 0) | |
| 664 | goto end; | |
| 665 | break; | |
| 666 | case ISAKMP_NPTYPE_SIG: | |
| 667 | if (isakmp_p2ph(&iph1->sig_p, pa->ptr) < 0) | |
| 668 | goto end; | |
| 669 | break; | |
| 670 | case ISAKMP_NPTYPE_VID: | |
| 671 | (void)check_vendorid(pa->ptr); | |
| 672 | break; | |
| 673 | ||
| 674 | #ifdef ENABLE_NATT | |
| 675 | case ISAKMP_NPTYPE_NATD_DRAFT: | |
| 676 | case ISAKMP_NPTYPE_NATD_RFC: | |
| 677 | #ifdef __APPLE__ | |
| 678 | case ISAKMP_NPTYPE_NATD_BADDRAFT: | |
| 679 | #endif | |
| 680 | if (NATT_AVAILABLE(iph1) && iph1->natt_options && | |
| 681 | pa->type == iph1->natt_options->payload_nat_d) { | |
| 682 | natd_received = NULL; | |
| 683 | if (isakmp_p2ph (&natd_received, pa->ptr) < 0) | |
| 684 | goto end; | |
| 685 | ||
| 686 | /* set both bits first so that we can clear them | |
| 687 | upon verifying hashes */ | |
| 688 | if (natd_seq == 0) | |
| 689 | iph1->natt_flags |= NAT_DETECTED; | |
| 690 | ||
| 691 | /* this function will clear appropriate bits bits | |
| 692 | from iph1->natt_flags */ | |
| 693 | natd_verified = natt_compare_addr_hash (iph1, | |
| 694 | natd_received, natd_seq++); | |
| 695 | ||
| 696 | plog (LLV_INFO, LOCATION, NULL, "NAT-D payload #%d %s\n", | |
| 697 | natd_seq - 1, | |
| 698 | natd_verified ? "verified" : "doesn't match"); | |
| 699 | ||
| 700 | vfree (natd_received); | |
| 701 | break; | |
| 702 | } | |
| 703 | /* %%%% Be lenient here - some servers send natd payloads */ | |
| 704 | /* when no nat is detected */ | |
| 705 | break; | |
| 706 | #endif | |
| 707 | ||
| 708 | default: | |
| 709 | /* don't send information, see ident_r1recv() */ | |
| 710 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 711 | "ignore the packet, " | |
| 712 | "received unexpecting payload type %d.\n", | |
| 713 | pa->type); | |
| 714 | goto end; | |
| 715 | } | |
| 716 | } | |
| 717 | ||
| 718 | #ifdef ENABLE_NATT | |
| 719 | if (NATT_AVAILABLE(iph1)) { | |
| 720 | plog (LLV_INFO, LOCATION, NULL, "NAT %s %s%s\n", | |
| 721 | iph1->natt_flags & NAT_DETECTED ? | |
| 722 | "detected:" : "not detected", | |
| 723 | iph1->natt_flags & NAT_DETECTED_ME ? "ME " : "", | |
| 724 | iph1->natt_flags & NAT_DETECTED_PEER ? "PEER" : ""); | |
| 725 | if (iph1->natt_flags & NAT_DETECTED) | |
| 726 | natt_float_ports (iph1); | |
| 727 | } | |
| 728 | #endif | |
| 729 | ||
| 730 | /* payload existency check */ | |
| 731 | /* validate authentication value */ | |
| 732 | ptype = oakley_validate_auth(iph1); | |
| 733 | if (ptype != 0) { | |
| 734 | if (ptype == -1) { | |
| 735 | /* message printed inner oakley_validate_auth() */ | |
| 736 | goto end; | |
| 737 | } | |
| 738 | EVT_PUSH(iph1->local, iph1->remote, | |
| 739 | EVTT_PEERPH1AUTH_FAILED, NULL); | |
| 740 | isakmp_info_send_n1(iph1, ptype, NULL); | |
| 741 | goto end; | |
| 742 | } | |
| 743 | ||
| 744 | /* compute sharing secret of DH */ | |
| 745 | if (oakley_dh_compute(iph1->approval->dhgrp, iph1->dhpub, | |
| 746 | iph1->dhpriv, iph1->dhpub_p, &iph1->dhgxy) < 0) | |
| 747 | goto end; | |
| 748 | ||
| 749 | /* generate SKEYID to compute hash if signature mode */ | |
| d1e348cf A |
750 | switch (AUTHMETHOD(iph1)) { |
| 751 | case OAKLEY_ATTR_AUTH_METHOD_RSASIG: | |
| 752 | case OAKLEY_ATTR_AUTH_METHOD_DSSSIG: | |
| 753 | #ifdef ENABLE_HYBRID | |
| 754 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_I: | |
| 755 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I: | |
| 756 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_I: | |
| 757 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I: | |
| 758 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_I: | |
| 759 | #endif | |
| 52b7d2ce A |
760 | if (oakley_skeyid(iph1) < 0) |
| 761 | goto end; | |
| d1e348cf A |
762 | break; |
| 763 | default: | |
| 764 | break; | |
| 52b7d2ce A |
765 | } |
| 766 | ||
| 767 | /* generate SKEYIDs & IV & final cipher key */ | |
| 768 | if (oakley_skeyid_dae(iph1) < 0) | |
| 769 | goto end; | |
| 770 | if (oakley_compute_enckey(iph1) < 0) | |
| 771 | goto end; | |
| 772 | if (oakley_newiv(iph1) < 0) | |
| 773 | goto end; | |
| 774 | ||
| 775 | /* see handler.h about IV synchronization. */ | |
| 776 | memcpy(iph1->ivm->iv->v, iph1->ivm->ive->v, iph1->ivm->iv->l); | |
| 777 | ||
| 778 | /* set encryption flag */ | |
| 779 | iph1->flags |= ISAKMP_FLAG_E; | |
| 780 | ||
| 781 | iph1->status = PHASE1ST_MSG3RECEIVED; | |
| 782 | ||
| 783 | error = 0; | |
| 784 | ||
| 785 | end: | |
| 786 | if (pbuf) | |
| 787 | vfree(pbuf); | |
| 788 | ||
| 789 | if (error) { | |
| 790 | VPTRINIT(iph1->dhpub_p); | |
| 791 | oakley_delcert(iph1->cert_p); | |
| 792 | iph1->cert_p = NULL; | |
| 793 | oakley_delcert(iph1->crl_p); | |
| 794 | iph1->crl_p = NULL; | |
| 795 | VPTRINIT(iph1->sig_p); | |
| 796 | } | |
| 797 | ||
| 798 | return error; | |
| 799 | } | |
| 800 | ||
| 801 | /* | |
| 802 | * status update and establish isakmp sa. | |
| 803 | */ | |
| 804 | int | |
| 805 | base_i3send(iph1, msg) | |
| 806 | struct ph1handle *iph1; | |
| 807 | vchar_t *msg; | |
| 808 | { | |
| 809 | int error = -1; | |
| 810 | ||
| 811 | /* validity check */ | |
| 812 | if (iph1->status != PHASE1ST_MSG3RECEIVED) { | |
| 813 | plog(LLV_ERROR, LOCATION, NULL, | |
| 814 | "status mismatched %d.\n", iph1->status); | |
| 815 | goto end; | |
| 816 | } | |
| 817 | ||
| 818 | iph1->status = PHASE1ST_ESTABLISHED; | |
| 819 | ||
| 820 | error = 0; | |
| 821 | ||
| 822 | end: | |
| 823 | return error; | |
| 824 | } | |
| 825 | ||
| 826 | /* | |
| 827 | * receive from initiator | |
| 828 | * psk: HDR, SA, Idii, Ni_b | |
| 829 | * sig: HDR, SA, Idii, Ni_b | |
| 830 | * rsa: HDR, SA, [HASH(1),] <IDii_b>Pubkey_r, <Ni_b>Pubkey_r | |
| 831 | * rev: HDR, SA, [HASH(1),] <Ni_b>Pubkey_r, <IDii_b>Ke_i | |
| 832 | */ | |
| 833 | int | |
| 834 | base_r1recv(iph1, msg) | |
| 835 | struct ph1handle *iph1; | |
| 836 | vchar_t *msg; | |
| 837 | { | |
| 838 | vchar_t *pbuf = NULL; | |
| 839 | struct isakmp_parse_t *pa; | |
| 840 | int error = -1; | |
| 841 | int vid_numeric; | |
| 842 | ||
| 843 | /* validity check */ | |
| 844 | if (iph1->status != PHASE1ST_START) { | |
| 845 | plog(LLV_ERROR, LOCATION, NULL, | |
| 846 | "status mismatched %d.\n", iph1->status); | |
| 847 | goto end; | |
| 848 | } | |
| 849 | ||
| 850 | /* validate the type of next payload */ | |
| 851 | /* | |
| 852 | * NOTE: XXX even if multiple VID, we'll silently ignore those. | |
| 853 | */ | |
| 854 | pbuf = isakmp_parse(msg); | |
| 855 | if (pbuf == NULL) | |
| 856 | goto end; | |
| 857 | pa = (struct isakmp_parse_t *)pbuf->v; | |
| 858 | ||
| 859 | /* check the position of SA payload */ | |
| 860 | if (pa->type != ISAKMP_NPTYPE_SA) { | |
| 861 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 862 | "received invalid next payload type %d, " | |
| 863 | "expecting %d.\n", | |
| 864 | pa->type, ISAKMP_NPTYPE_SA); | |
| 865 | goto end; | |
| 866 | } | |
| 867 | if (isakmp_p2ph(&iph1->sa, pa->ptr) < 0) | |
| 868 | goto end; | |
| 869 | pa++; | |
| 870 | ||
| 871 | for (/*nothing*/; | |
| 872 | pa->type != ISAKMP_NPTYPE_NONE; | |
| 873 | pa++) { | |
| 874 | ||
| 875 | switch (pa->type) { | |
| 876 | case ISAKMP_NPTYPE_NONCE: | |
| 877 | if (isakmp_p2ph(&iph1->nonce_p, pa->ptr) < 0) | |
| 878 | goto end; | |
| 879 | break; | |
| 880 | case ISAKMP_NPTYPE_ID: | |
| 881 | if (isakmp_p2ph(&iph1->id_p, pa->ptr) < 0) | |
| 882 | goto end; | |
| 883 | break; | |
| 884 | case ISAKMP_NPTYPE_VID: | |
| 885 | vid_numeric = check_vendorid(pa->ptr); | |
| 886 | #ifdef ENABLE_NATT | |
| 887 | if (iph1->rmconf->nat_traversal && natt_vendorid(vid_numeric)) | |
| 888 | natt_handle_vendorid(iph1, vid_numeric); | |
| 889 | #endif | |
| 890 | #ifdef ENABLE_FRAG | |
| 891 | if ((vid_numeric == VENDORID_FRAG) && | |
| 892 | (vendorid_frag_cap(pa->ptr) & VENDORID_FRAG_BASE)) | |
| 893 | iph1->frag = 1; | |
| 894 | #endif | |
| d1e348cf A |
895 | #ifdef ENABLE_HYBRID |
| 896 | switch (vid_numeric) { | |
| 897 | case VENDORID_XAUTH: | |
| 898 | iph1->mode_cfg->flags |= | |
| 899 | ISAKMP_CFG_VENDORID_XAUTH; | |
| 900 | break; | |
| 901 | ||
| 902 | case VENDORID_UNITY: | |
| 903 | iph1->mode_cfg->flags |= | |
| 904 | ISAKMP_CFG_VENDORID_UNITY; | |
| 905 | break; | |
| 906 | ||
| 907 | default: | |
| 908 | break; | |
| 909 | } | |
| 910 | #endif | |
| 911 | #ifdef ENABLE_DPD | |
| 912 | if (vid_numeric == VENDORID_DPD && iph1->rmconf->dpd) { | |
| 913 | iph1->dpd_support=1; | |
| 914 | plog(LLV_DEBUG, LOCATION, NULL, | |
| 915 | "remote supports DPD\n"); | |
| 916 | } | |
| 917 | #endif | |
| 52b7d2ce A |
918 | break; |
| 919 | default: | |
| 920 | /* don't send information, see ident_r1recv() */ | |
| 921 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 922 | "ignore the packet, " | |
| 923 | "received unexpecting payload type %d.\n", | |
| 924 | pa->type); | |
| 925 | goto end; | |
| 926 | } | |
| 927 | } | |
| 928 | ||
| 929 | if (iph1->nonce_p == NULL || iph1->id_p == NULL) { | |
| 930 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 931 | "few isakmp message received.\n"); | |
| 932 | goto end; | |
| 933 | } | |
| 934 | ||
| 935 | /* verify identifier */ | |
| 936 | if (ipsecdoi_checkid1(iph1) != 0) { | |
| 937 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 938 | "invalid ID payload.\n"); | |
| 939 | goto end; | |
| 940 | } | |
| 941 | ||
| 942 | #ifdef ENABLE_NATT | |
| 80318cb7 | 943 | if (NATT_AVAILABLE(iph1)) { |
| 52b7d2ce A |
944 | plog(LLV_INFO, LOCATION, iph1->remote, |
| 945 | "Selected NAT-T version: %s\n", | |
| 946 | vid_string_by_id(iph1->natt_options->version)); | |
| 80318cb7 A |
947 | ike_session_update_natt_version(iph1); |
| 948 | } | |
| 52b7d2ce A |
949 | #endif |
| 950 | ||
| 951 | /* check SA payload and set approval SA for use */ | |
| 952 | if (ipsecdoi_checkph1proposal(iph1->sa, iph1) < 0) { | |
| 953 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 954 | "failed to get valid proposal.\n"); | |
| 955 | /* XXX send information */ | |
| 956 | goto end; | |
| 957 | } | |
| 958 | ||
| 959 | iph1->status = PHASE1ST_MSG1RECEIVED; | |
| 960 | ||
| 961 | error = 0; | |
| 962 | ||
| 963 | end: | |
| 964 | if (pbuf) | |
| 965 | vfree(pbuf); | |
| 966 | ||
| 967 | if (error) { | |
| 968 | VPTRINIT(iph1->sa); | |
| 969 | VPTRINIT(iph1->nonce_p); | |
| 970 | VPTRINIT(iph1->id_p); | |
| 971 | } | |
| 972 | ||
| 973 | return error; | |
| 974 | } | |
| 975 | ||
| 976 | /* | |
| 977 | * send to initiator | |
| 978 | * psk: HDR, SA, Idir, Nr_b | |
| 979 | * sig: HDR, SA, Idir, Nr_b, [ CR ] | |
| 980 | * rsa: HDR, SA, <IDir_b>PubKey_i, <Nr_b>PubKey_i | |
| 981 | * rev: HDR, SA, <Nr_b>PubKey_i, <IDir_b>Ke_r | |
| 982 | */ | |
| 983 | int | |
| 984 | base_r1send(iph1, msg) | |
| 985 | struct ph1handle *iph1; | |
| 986 | vchar_t *msg; | |
| 987 | { | |
| 988 | struct payload_list *plist = NULL; | |
| 989 | int error = -1; | |
| 990 | #ifdef ENABLE_NATT | |
| 991 | vchar_t *vid_natt = NULL; | |
| 992 | #endif | |
| d1e348cf A |
993 | #ifdef ENABLE_HYBRID |
| 994 | vchar_t *vid_xauth = NULL; | |
| 995 | vchar_t *vid_unity = NULL; | |
| 996 | #endif | |
| 997 | #ifdef ENABLE_FRAG | |
| 998 | vchar_t *vid_frag = NULL; | |
| 999 | #endif | |
| 1000 | #ifdef ENABLE_DPD | |
| 1001 | vchar_t *vid_dpd = NULL; | |
| 1002 | #endif | |
| 52b7d2ce A |
1003 | |
| 1004 | /* validity check */ | |
| 1005 | if (iph1->status != PHASE1ST_MSG1RECEIVED) { | |
| 1006 | plog(LLV_ERROR, LOCATION, NULL, | |
| 1007 | "status mismatched %d.\n", iph1->status); | |
| 1008 | goto end; | |
| 1009 | } | |
| 1010 | ||
| 1011 | /* set responder's cookie */ | |
| 1012 | isakmp_newcookie((caddr_t)&iph1->index.r_ck, iph1->remote, iph1->local); | |
| 1013 | ||
| 1014 | /* make ID payload into isakmp status */ | |
| 1015 | if (ipsecdoi_setid1(iph1) < 0) | |
| 1016 | goto end; | |
| 1017 | ||
| 1018 | /* generate NONCE value */ | |
| 1019 | iph1->nonce = eay_set_random(iph1->rmconf->nonce_size); | |
| 1020 | if (iph1->nonce == NULL) | |
| 1021 | goto end; | |
| 1022 | ||
| 1023 | /* set SA payload to reply */ | |
| 1024 | plist = isakmp_plist_append(plist, iph1->sa_ret, ISAKMP_NPTYPE_SA); | |
| 1025 | ||
| 1026 | /* create isakmp ID payload */ | |
| 1027 | plist = isakmp_plist_append(plist, iph1->id, ISAKMP_NPTYPE_ID); | |
| 1028 | ||
| 1029 | /* create isakmp NONCE payload */ | |
| 1030 | plist = isakmp_plist_append(plist, iph1->nonce, ISAKMP_NPTYPE_NONCE); | |
| 1031 | ||
| 1032 | #ifdef ENABLE_NATT | |
| 1033 | /* has the peer announced nat-t? */ | |
| 1034 | if (NATT_AVAILABLE(iph1)) | |
| 1035 | vid_natt = set_vendorid(iph1->natt_options->version); | |
| 1036 | if (vid_natt) | |
| 1037 | plist = isakmp_plist_append(plist, vid_natt, ISAKMP_NPTYPE_VID); | |
| 1038 | #endif | |
| d1e348cf A |
1039 | #ifdef ENABLE_HYBRID |
| 1040 | if (iph1->mode_cfg->flags & ISAKMP_CFG_VENDORID_XAUTH) { | |
| 1041 | plog (LLV_INFO, LOCATION, NULL, "Adding xauth VID payload.\n"); | |
| 1042 | if ((vid_xauth = set_vendorid(VENDORID_XAUTH)) == NULL) { | |
| 1043 | plog(LLV_ERROR, LOCATION, NULL, | |
| 1044 | "Cannot create Xauth vendor ID\n"); | |
| 1045 | goto end; | |
| 1046 | } | |
| 1047 | plist = isakmp_plist_append(plist, | |
| 1048 | vid_xauth, ISAKMP_NPTYPE_VID); | |
| 1049 | } | |
| 1050 | ||
| 1051 | if (iph1->mode_cfg->flags & ISAKMP_CFG_VENDORID_UNITY) { | |
| 1052 | if ((vid_unity = set_vendorid(VENDORID_UNITY)) == NULL) { | |
| 1053 | plog(LLV_ERROR, LOCATION, NULL, | |
| 1054 | "Cannot create Unity vendor ID\n"); | |
| 1055 | goto end; | |
| 1056 | } | |
| 1057 | plist = isakmp_plist_append(plist, | |
| 1058 | vid_unity, ISAKMP_NPTYPE_VID); | |
| 1059 | } | |
| 1060 | #endif | |
| 1061 | #ifdef ENABLE_DPD | |
| 1062 | /* | |
| 1063 | * Only send DPD support if remote announced DPD | |
| 1064 | * and if DPD support is active | |
| 1065 | */ | |
| 1066 | if (iph1->dpd_support && iph1->rmconf->dpd) { | |
| 1067 | if ((vid_dpd = set_vendorid(VENDORID_DPD)) == NULL) { | |
| 1068 | plog(LLV_ERROR, LOCATION, NULL, | |
| 1069 | "DPD vendorID construction failed\n"); | |
| 1070 | } else { | |
| 1071 | plist = isakmp_plist_append(plist, vid_dpd, | |
| 1072 | ISAKMP_NPTYPE_VID); | |
| 1073 | } | |
| 1074 | } | |
| 1075 | #endif | |
| 1076 | #ifdef ENABLE_FRAG | |
| 1077 | if (iph1->rmconf->ike_frag) { | |
| 1078 | if ((vid_frag = set_vendorid(VENDORID_FRAG)) == NULL) { | |
| 1079 | plog(LLV_ERROR, LOCATION, NULL, | |
| 1080 | "Frag vendorID construction failed\n"); | |
| 1081 | } else { | |
| 1082 | vid_frag = isakmp_frag_addcap(vid_frag, | |
| 1083 | VENDORID_FRAG_BASE); | |
| 1084 | plist = isakmp_plist_append(plist, | |
| 1085 | vid_frag, ISAKMP_NPTYPE_VID); | |
| 1086 | } | |
| 1087 | } | |
| 1088 | #endif | |
| 52b7d2ce A |
1089 | |
| 1090 | iph1->sendbuf = isakmp_plist_set_all (&plist, iph1); | |
| 1091 | ||
| 1092 | #ifdef HAVE_PRINT_ISAKMP_C | |
| 1093 | isakmp_printpacket(iph1->sendbuf, iph1->local, iph1->remote, 0); | |
| 1094 | #endif | |
| 1095 | ||
| 1096 | /* send the packet, add to the schedule to resend */ | |
| 1097 | iph1->retry_counter = iph1->rmconf->retry_counter; | |
| d1e348cf A |
1098 | if (isakmp_ph1resend(iph1) == -1) { |
| 1099 | iph1 = NULL; | |
| 52b7d2ce | 1100 | goto end; |
| d1e348cf | 1101 | } |
| 52b7d2ce A |
1102 | |
| 1103 | /* the sending message is added to the received-list. */ | |
| d1e348cf A |
1104 | if (add_recvdpkt(iph1->remote, iph1->local, iph1->sendbuf, msg, |
| 1105 | PH1_NON_ESP_EXTRA_LEN(iph1)) == -1) { | |
| 52b7d2ce A |
1106 | plog(LLV_ERROR , LOCATION, NULL, |
| 1107 | "failed to add a response packet to the tree.\n"); | |
| 1108 | goto end; | |
| 1109 | } | |
| 1110 | ||
| 1111 | iph1->status = PHASE1ST_MSG1SENT; | |
| 1112 | ||
| 1113 | #ifdef ENABLE_VPNCONTROL_PORT | |
| 1114 | vpncontrol_notify_phase_change(1, FROM_LOCAL, iph1, NULL); | |
| 1115 | #endif | |
| 1116 | ||
| 1117 | error = 0; | |
| 1118 | ||
| 1119 | end: | |
| 1120 | #ifdef ENABLE_NATT | |
| 1121 | if (vid_natt) | |
| 1122 | vfree(vid_natt); | |
| 1123 | #endif | |
| d1e348cf A |
1124 | #ifdef ENABLE_HYBRID |
| 1125 | if (vid_xauth != NULL) | |
| 1126 | vfree(vid_xauth); | |
| 1127 | if (vid_unity != NULL) | |
| 1128 | vfree(vid_unity); | |
| 1129 | #endif | |
| 1130 | #ifdef ENABLE_FRAG | |
| 1131 | if (vid_frag) | |
| 1132 | vfree(vid_frag); | |
| 1133 | #endif | |
| 1134 | #ifdef ENABLE_DPD | |
| 1135 | if (vid_dpd) | |
| 1136 | vfree(vid_dpd); | |
| 1137 | #endif | |
| 52b7d2ce | 1138 | |
| d1e348cf A |
1139 | if (iph1 != NULL) |
| 1140 | VPTRINIT(iph1->sa_ret); | |
| 52b7d2ce A |
1141 | |
| 1142 | return error; | |
| 1143 | } | |
| 1144 | ||
| 1145 | /* | |
| 1146 | * receive from initiator | |
| 1147 | * psk: HDR, KE, HASH_I | |
| 1148 | * sig: HDR, KE, [ CR, ] [CERT,] SIG_I | |
| 1149 | * rsa: HDR, KE, HASH_I | |
| 1150 | * rev: HDR, <KE>Ke_i, HASH_I | |
| 1151 | */ | |
| 1152 | int | |
| 1153 | base_r2recv(iph1, msg) | |
| 1154 | struct ph1handle *iph1; | |
| 1155 | vchar_t *msg; | |
| 1156 | { | |
| 1157 | vchar_t *pbuf = NULL; | |
| 1158 | struct isakmp_parse_t *pa; | |
| 1159 | int error = -1; | |
| 1160 | int ptype; | |
| 1161 | #ifdef ENABLE_NATT | |
| 1162 | int natd_seq = 0; | |
| 1163 | #endif | |
| 1164 | ||
| 1165 | /* validity check */ | |
| 1166 | if (iph1->status != PHASE1ST_MSG1SENT) { | |
| 1167 | plog(LLV_ERROR, LOCATION, NULL, | |
| 1168 | "status mismatched %d.\n", iph1->status); | |
| 1169 | goto end; | |
| 1170 | } | |
| 1171 | ||
| 1172 | /* validate the type of next payload */ | |
| 1173 | pbuf = isakmp_parse(msg); | |
| 1174 | if (pbuf == NULL) | |
| 1175 | goto end; | |
| 1176 | ||
| 1177 | iph1->pl_hash = NULL; | |
| 1178 | ||
| 1179 | for (pa = (struct isakmp_parse_t *)pbuf->v; | |
| 1180 | pa->type != ISAKMP_NPTYPE_NONE; | |
| 1181 | pa++) { | |
| 1182 | ||
| 1183 | switch (pa->type) { | |
| 1184 | case ISAKMP_NPTYPE_KE: | |
| 1185 | if (isakmp_p2ph(&iph1->dhpub_p, pa->ptr) < 0) | |
| 1186 | goto end; | |
| 1187 | break; | |
| 1188 | case ISAKMP_NPTYPE_HASH: | |
| 1189 | iph1->pl_hash = (struct isakmp_pl_hash *)pa->ptr; | |
| 1190 | break; | |
| 1191 | case ISAKMP_NPTYPE_CERT: | |
| 1192 | if (oakley_savecert(iph1, pa->ptr) < 0) | |
| 1193 | goto end; | |
| 1194 | break; | |
| 1195 | case ISAKMP_NPTYPE_SIG: | |
| 1196 | if (isakmp_p2ph(&iph1->sig_p, pa->ptr) < 0) | |
| 1197 | goto end; | |
| 1198 | break; | |
| 1199 | case ISAKMP_NPTYPE_VID: | |
| 1200 | (void)check_vendorid(pa->ptr); | |
| 1201 | break; | |
| 1202 | ||
| 1203 | #ifdef ENABLE_NATT | |
| 1204 | case ISAKMP_NPTYPE_NATD_DRAFT: | |
| 1205 | case ISAKMP_NPTYPE_NATD_RFC: | |
| 1206 | #ifdef __APPLE__ | |
| 1207 | case ISAKMP_NPTYPE_NATD_BADDRAFT: | |
| 1208 | #endif | |
| 1209 | if (pa->type == iph1->natt_options->payload_nat_d) | |
| 1210 | { | |
| 1211 | vchar_t *natd_received = NULL; | |
| 1212 | int natd_verified; | |
| 1213 | ||
| 1214 | if (isakmp_p2ph (&natd_received, pa->ptr) < 0) | |
| 1215 | goto end; | |
| 1216 | ||
| 1217 | if (natd_seq == 0) | |
| 1218 | iph1->natt_flags |= NAT_DETECTED; | |
| 1219 | ||
| 1220 | natd_verified = natt_compare_addr_hash (iph1, | |
| 1221 | natd_received, natd_seq++); | |
| 1222 | ||
| 1223 | plog (LLV_INFO, LOCATION, NULL, "NAT-D payload #%d %s\n", | |
| 1224 | natd_seq - 1, | |
| 1225 | natd_verified ? "verified" : "doesn't match"); | |
| 1226 | ||
| 1227 | vfree (natd_received); | |
| 1228 | break; | |
| 1229 | } | |
| 1230 | /* %%%% Be lenient here - some servers send natd payloads */ | |
| 1231 | /* when no nat is detected */ | |
| 1232 | break; | |
| 1233 | #endif | |
| 1234 | ||
| 1235 | default: | |
| 1236 | /* don't send information, see ident_r1recv() */ | |
| 1237 | plog(LLV_ERROR, LOCATION, iph1->remote, | |
| 1238 | "ignore the packet, " | |
| 1239 | "received unexpecting payload type %d.\n", | |
| 1240 | pa->type); | |
| 1241 | goto end; | |
| 1242 | } | |
| 1243 | } | |
| 1244 | ||
| 1245 | /* generate DH public value */ | |
| 1246 | if (oakley_dh_generate(iph1->approval->dhgrp, | |
| 1247 | &iph1->dhpub, &iph1->dhpriv) < 0) | |
| 1248 | goto end; | |
| 1249 | ||
| 1250 | /* compute sharing secret of DH */ | |
| 1251 | if (oakley_dh_compute(iph1->approval->dhgrp, iph1->dhpub, | |
| 1252 | iph1->dhpriv, iph1->dhpub_p, &iph1->dhgxy) < 0) | |
| 1253 | goto end; | |
| 1254 | ||
| 1255 | /* generate SKEYID */ | |
| 1256 | if (oakley_skeyid(iph1) < 0) | |
| 1257 | goto end; | |
| 1258 | ||
| 1259 | #ifdef ENABLE_NATT | |
| 1260 | if (NATT_AVAILABLE(iph1)) | |
| 1261 | plog (LLV_INFO, LOCATION, NULL, "NAT %s %s%s\n", | |
| 1262 | iph1->natt_flags & NAT_DETECTED ? | |
| 1263 | "detected:" : "not detected", | |
| 1264 | iph1->natt_flags & NAT_DETECTED_ME ? "ME " : "", | |
| 1265 | iph1->natt_flags & NAT_DETECTED_PEER ? "PEER" : ""); | |
| 1266 | #endif | |
| 1267 | ||
| 1268 | /* payload existency check */ | |
| 1269 | /* validate authentication value */ | |
| 1270 | ptype = oakley_validate_auth(iph1); | |
| 1271 | if (ptype != 0) { | |
| 1272 | if (ptype == -1) { | |
| 1273 | /* message printed inner oakley_validate_auth() */ | |
| 1274 | goto end; | |
| 1275 | } | |
| 1276 | EVT_PUSH(iph1->local, iph1->remote, | |
| 1277 | EVTT_PEERPH1AUTH_FAILED, NULL); | |
| 1278 | isakmp_info_send_n1(iph1, ptype, NULL); | |
| 1279 | goto end; | |
| 1280 | } | |
| 1281 | ||
| 1282 | iph1->status = PHASE1ST_MSG2RECEIVED; | |
| 1283 | ||
| 1284 | error = 0; | |
| 1285 | ||
| 1286 | end: | |
| 1287 | if (pbuf) | |
| 1288 | vfree(pbuf); | |
| 1289 | ||
| 1290 | if (error) { | |
| 1291 | VPTRINIT(iph1->dhpub_p); | |
| 1292 | oakley_delcert(iph1->cert_p); | |
| 1293 | iph1->cert_p = NULL; | |
| 1294 | oakley_delcert(iph1->crl_p); | |
| 1295 | iph1->crl_p = NULL; | |
| 1296 | VPTRINIT(iph1->sig_p); | |
| 1297 | } | |
| 1298 | ||
| 1299 | return error; | |
| 1300 | } | |
| 1301 | ||
| 1302 | /* | |
| 1303 | * send to initiator | |
| 1304 | * psk: HDR, KE, HASH_R | |
| 1305 | * sig: HDR, KE, [CERT,] SIG_R | |
| 1306 | * rsa: HDR, KE, HASH_R | |
| 1307 | * rev: HDR, <KE>_Ke_r, HASH_R | |
| 1308 | */ | |
| 1309 | int | |
| 1310 | base_r2send(iph1, msg) | |
| 1311 | struct ph1handle *iph1; | |
| 1312 | vchar_t *msg; | |
| 1313 | { | |
| 1314 | struct payload_list *plist = NULL; | |
| 1315 | vchar_t *vid = NULL; | |
| 1316 | int need_cert = 0; | |
| 1317 | int error = -1; | |
| 1318 | ||
| 1319 | /* validity check */ | |
| 1320 | if (iph1->status != PHASE1ST_MSG2RECEIVED) { | |
| 1321 | plog(LLV_ERROR, LOCATION, NULL, | |
| 1322 | "status mismatched %d.\n", iph1->status); | |
| 1323 | goto end; | |
| 1324 | } | |
| 1325 | ||
| 1326 | /* generate HASH to send */ | |
| 1327 | plog(LLV_DEBUG, LOCATION, NULL, "generate HASH_I\n"); | |
| d1e348cf | 1328 | switch (AUTHMETHOD(iph1)) { |
| 52b7d2ce | 1329 | case OAKLEY_ATTR_AUTH_METHOD_PSKEY: |
| d1e348cf A |
1330 | #ifdef ENABLE_HYBRID |
| 1331 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_R: | |
| 1332 | #endif | |
| 52b7d2ce A |
1333 | case OAKLEY_ATTR_AUTH_METHOD_RSAENC: |
| 1334 | case OAKLEY_ATTR_AUTH_METHOD_RSAREV: | |
| d1e348cf A |
1335 | #ifdef ENABLE_HYBRID |
| 1336 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_R: | |
| 1337 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_R: | |
| 1338 | #endif | |
| 52b7d2ce A |
1339 | iph1->hash = oakley_ph1hash_common(iph1, GENERATE); |
| 1340 | break; | |
| 1341 | case OAKLEY_ATTR_AUTH_METHOD_DSSSIG: | |
| 1342 | case OAKLEY_ATTR_AUTH_METHOD_RSASIG: | |
| d1e348cf A |
1343 | #ifdef ENABLE_HYBRID |
| 1344 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_R: | |
| 1345 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_R: | |
| 1346 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_R: | |
| 1347 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_R: | |
| 1348 | #endif | |
| 1349 | #ifdef HAVE_GSSAPI | |
| 52b7d2ce | 1350 | case OAKLEY_ATTR_AUTH_METHOD_GSSAPI_KRB: |
| d1e348cf | 1351 | #endif |
| 52b7d2ce A |
1352 | iph1->hash = oakley_ph1hash_base_r(iph1, GENERATE); |
| 1353 | break; | |
| 1354 | default: | |
| 1355 | plog(LLV_ERROR, LOCATION, NULL, | |
| 1356 | "invalid authentication method %d\n", | |
| 1357 | iph1->approval->authmethod); | |
| 1358 | goto end; | |
| 1359 | } | |
| 1360 | if (iph1->hash == NULL) | |
| 1361 | goto end; | |
| 1362 | ||
| d1e348cf | 1363 | switch (AUTHMETHOD(iph1)) { |
| 52b7d2ce | 1364 | case OAKLEY_ATTR_AUTH_METHOD_PSKEY: |
| d1e348cf A |
1365 | #ifdef ENABLE_HYBRID |
| 1366 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_R: | |
| 1367 | #endif | |
| 52b7d2ce A |
1368 | vid = set_vendorid(iph1->approval->vendorid); |
| 1369 | ||
| 1370 | /* create isakmp KE payload */ | |
| 1371 | plist = isakmp_plist_append(plist, iph1->dhpub, ISAKMP_NPTYPE_KE); | |
| 1372 | ||
| 1373 | /* create isakmp HASH payload */ | |
| 1374 | plist = isakmp_plist_append(plist, iph1->hash, ISAKMP_NPTYPE_HASH); | |
| 1375 | ||
| 1376 | /* append vendor id, if needed */ | |
| 1377 | if (vid) | |
| 1378 | plist = isakmp_plist_append(plist, vid, ISAKMP_NPTYPE_VID); | |
| 1379 | break; | |
| 1380 | case OAKLEY_ATTR_AUTH_METHOD_DSSSIG: | |
| 1381 | case OAKLEY_ATTR_AUTH_METHOD_RSASIG: | |
| d1e348cf A |
1382 | #ifdef ENABLE_HYBRID |
| 1383 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_R: | |
| 1384 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_R: | |
| 1385 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_R: | |
| 1386 | case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_R: | |
| 1387 | #endif | |
| 52b7d2ce A |
1388 | /* XXX if there is CR or not ? */ |
| 1389 | ||
| 1390 | if (oakley_getmycert(iph1) < 0) | |
| 1391 | goto end; | |
| 1392 | ||
| 1393 | if (oakley_getsign(iph1) < 0) | |
| 1394 | goto end; | |
| 1395 | ||
| 1396 | if (iph1->cert && iph1->rmconf->send_cert) | |
| 1397 | need_cert = 1; | |
| 1398 | ||
| 1399 | /* create isakmp KE payload */ | |
| 1400 | plist = isakmp_plist_append(plist, iph1->dhpub, ISAKMP_NPTYPE_KE); | |
| 1401 | ||
| 1402 | /* add CERT payload if there */ | |
| 1403 | if (need_cert) | |
| 1404 | plist = isakmp_plist_append(plist, iph1->cert->pl, ISAKMP_NPTYPE_CERT); | |
| 1405 | /* add SIG payload */ | |
| 1406 | plist = isakmp_plist_append(plist, iph1->sig, ISAKMP_NPTYPE_SIG); | |
| 1407 | break; | |
| d1e348cf | 1408 | #ifdef HAVE_GSSAPI |
| 52b7d2ce A |
1409 | case OAKLEY_ATTR_AUTH_METHOD_GSSAPI_KRB: |
| 1410 | /* ... */ | |
| 1411 | break; | |
| d1e348cf | 1412 | #endif |
| 52b7d2ce A |
1413 | case OAKLEY_ATTR_AUTH_METHOD_RSAENC: |
| 1414 | case OAKLEY_ATTR_AUTH_METHOD_RSAREV: | |
| d1e348cf A |
1415 | #ifdef ENABLE_HYBRID |
| 1416 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_R: | |
| 1417 | case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_R: | |
| 1418 | #endif | |
| 52b7d2ce A |
1419 | break; |
| 1420 | } | |
| 1421 | ||
| 1422 | #ifdef ENABLE_NATT | |
| 1423 | /* generate NAT-D payloads */ | |
| d1e348cf | 1424 | if (NATT_AVAILABLE(iph1)) { |
| 52b7d2ce A |
1425 | vchar_t *natd[2] = { NULL, NULL }; |
| 1426 | ||
| 1427 | plog (LLV_INFO, LOCATION, NULL, "Adding remote and local NAT-D payloads.\n"); | |
| 1428 | if ((natd[0] = natt_hash_addr (iph1, iph1->remote)) == NULL) { | |
| 1429 | plog(LLV_ERROR, LOCATION, NULL, | |
| 1430 | "NAT-D hashing failed for %s\n", saddr2str(iph1->remote)); | |
| 1431 | goto end; | |
| 1432 | } | |
| 1433 | ||
| 1434 | if ((natd[1] = natt_hash_addr (iph1, iph1->local)) == NULL) { | |
| 1435 | plog(LLV_ERROR, LOCATION, NULL, | |
| 1436 | "NAT-D hashing failed for %s\n", saddr2str(iph1->local)); | |
| 1437 | goto end; | |
| 1438 | } | |
| 1439 | ||
| 1440 | #ifdef __APPLE__ | |
| 1441 | /* old Apple version sends natd payloads in the wrong order */ | |
| 1442 | if (iph1->natt_options->version == VENDORID_NATT_APPLE) { | |
| 1443 | plist = isakmp_plist_append(plist, natd[1], iph1->natt_options->payload_nat_d); | |
| 1444 | plist = isakmp_plist_append(plist, natd[0], iph1->natt_options->payload_nat_d); | |
| 1445 | } else | |
| 1446 | #endif | |
| 1447 | { | |
| 1448 | plist = isakmp_plist_append(plist, natd[0], iph1->natt_options->payload_nat_d); | |
| 1449 | plist = isakmp_plist_append(plist, natd[1], iph1->natt_options->payload_nat_d); | |
| 1450 | } | |
| 1451 | } | |
| 1452 | #endif | |
| 1453 | ||
| d1e348cf | 1454 | iph1->sendbuf = isakmp_plist_set_all(&plist, iph1); |
| 52b7d2ce A |
1455 | |
| 1456 | #ifdef HAVE_PRINT_ISAKMP_C | |
| 1457 | isakmp_printpacket(iph1->sendbuf, iph1->local, iph1->remote, 0); | |
| 1458 | #endif | |
| 1459 | ||
| 1460 | /* send HDR;KE;NONCE to responder */ | |
| 1461 | if (isakmp_send(iph1, iph1->sendbuf) < 0) | |
| 1462 | goto end; | |
| 1463 | ||
| 1464 | /* the sending message is added to the received-list. */ | |
| d1e348cf A |
1465 | if (add_recvdpkt(iph1->remote, iph1->local, iph1->sendbuf, msg, |
| 1466 | PH1_NON_ESP_EXTRA_LEN(iph1)) == -1) { | |
| 52b7d2ce A |
1467 | plog(LLV_ERROR , LOCATION, NULL, |
| 1468 | "failed to add a response packet to the tree.\n"); | |
| 1469 | goto end; | |
| 1470 | } | |
| 1471 | ||
| 1472 | /* generate SKEYIDs & IV & final cipher key */ | |
| 1473 | if (oakley_skeyid_dae(iph1) < 0) | |
| 1474 | goto end; | |
| 1475 | if (oakley_compute_enckey(iph1) < 0) | |
| 1476 | goto end; | |
| 1477 | if (oakley_newiv(iph1) < 0) | |
| 1478 | goto end; | |
| 1479 | ||
| 1480 | /* set encryption flag */ | |
| 1481 | iph1->flags |= ISAKMP_FLAG_E; | |
| 1482 | ||
| 1483 | iph1->status = PHASE1ST_ESTABLISHED; | |
| 1484 | ||
| 1485 | error = 0; | |
| 1486 | ||
| 1487 | end: | |
| 1488 | if (vid) | |
| 1489 | vfree(vid); | |
| 1490 | return error; | |
| 1491 | } |