diff options
Diffstat (limited to 'src/racoon/isakmp_base.c')
| -rw-r--r-- | src/racoon/isakmp_base.c | 1407 |
1 files changed, 0 insertions, 1407 deletions
diff --git a/src/racoon/isakmp_base.c b/src/racoon/isakmp_base.c deleted file mode 100644 index 308c3e3..0000000 --- a/src/racoon/isakmp_base.c +++ /dev/null @@ -1,1407 +0,0 @@ -/* $NetBSD: isakmp_base.c,v 1.7 2006/10/02 21:51:33 manu Exp $ */ - -/* $KAME: isakmp_base.c,v 1.49 2003/11/13 02:30:20 sakane Exp $ */ - -/* - * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the project nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE PROJECT AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE PROJECT OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -/* Base Exchange (Base Mode) */ - -#include "config.h" - -#include <sys/types.h> -#include <sys/param.h> - -#include <stdlib.h> -#include <stdio.h> -#include <string.h> -#include <errno.h> -#if TIME_WITH_SYS_TIME -# include <sys/time.h> -# include <time.h> -#else -# if HAVE_SYS_TIME_H -# include <sys/time.h> -# else -# include <time.h> -# endif -#endif - -#include "var.h" -#include "misc.h" -#include "vmbuf.h" -#include "plog.h" -#include "sockmisc.h" -#include "schedule.h" -#include "debug.h" - -#ifdef ENABLE_HYBRID -#include <resolv.h> -#endif - -#include "localconf.h" -#include "remoteconf.h" -#include "isakmp_var.h" -#include "isakmp.h" -#include "evt.h" -#include "oakley.h" -#include "handler.h" -#include "ipsec_doi.h" -#include "crypto_openssl.h" -#include "pfkey.h" -#include "isakmp_base.h" -#include "isakmp_inf.h" -#include "vendorid.h" -#ifdef ENABLE_NATT -#include "nattraversal.h" -#endif -#ifdef ENABLE_FRAG -#include "isakmp_frag.h" -#endif -#ifdef ENABLE_HYBRID -#include "isakmp_xauth.h" -#include "isakmp_cfg.h" -#endif - -/* %%% - * begin Identity Protection Mode as initiator. - */ -/* - * send to responder - * psk: HDR, SA, Idii, Ni_b - * sig: HDR, SA, Idii, Ni_b - * rsa: HDR, SA, [HASH(1),] <IDii_b>Pubkey_r, <Ni_b>Pubkey_r - * rev: HDR, SA, [HASH(1),] <Ni_b>Pubkey_r, <IDii_b>Ke_i - */ -int -base_i1send(iph1, msg) - struct ph1handle *iph1; - vchar_t *msg; /* must be null */ -{ - struct payload_list *plist = NULL; - int error = -1; -#ifdef ENABLE_NATT - vchar_t *vid_natt[MAX_NATT_VID_COUNT] = { NULL }; - int i, vid_natt_i = 0; -#endif -#ifdef ENABLE_FRAG - vchar_t *vid_frag = NULL; -#endif -#ifdef ENABLE_HYBRID - vchar_t *vid_xauth = NULL; - vchar_t *vid_unity = NULL; -#endif -#ifdef ENABLE_DPD - vchar_t *vid_dpd = NULL; -#endif - - - /* validity check */ - if (msg != NULL) { - plog(LLV_ERROR, LOCATION, NULL, - "msg has to be NULL in this function.\n"); - goto end; - } - if (iph1->status != PHASE1ST_START) { - plog(LLV_ERROR, LOCATION, NULL, - "status mismatched %d.\n", iph1->status); - goto end; - } - - /* create isakmp index */ - memset(&iph1->index, 0, sizeof(iph1->index)); - isakmp_newcookie((caddr_t)&iph1->index, iph1->remote, iph1->local); - - /* make ID payload into isakmp status */ - if (ipsecdoi_setid1(iph1) < 0) - goto end; - - /* create SA payload for my proposal */ - iph1->sa = ipsecdoi_setph1proposal(iph1->rmconf->proposal); - if (iph1->sa == NULL) - goto end; - - /* generate NONCE value */ - iph1->nonce = eay_set_random(iph1->rmconf->nonce_size); - if (iph1->nonce == NULL) - goto end; - -#ifdef ENABLE_HYBRID - /* Do we need Xauth VID? */ - switch (RMAUTHMETHOD(iph1)) { - case FICTIVE_AUTH_METHOD_XAUTH_PSKEY_I: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_I: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_I: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_I: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_I: - if ((vid_xauth = set_vendorid(VENDORID_XAUTH)) == NULL) - plog(LLV_ERROR, LOCATION, NULL, - "Xauth vendor ID generation failed\n"); - - if ((vid_unity = set_vendorid(VENDORID_UNITY)) == NULL) - plog(LLV_ERROR, LOCATION, NULL, - "Unity vendor ID generation failed\n"); - break; - default: - break; - } -#endif -#ifdef ENABLE_FRAG - if (iph1->rmconf->ike_frag) { - vid_frag = set_vendorid(VENDORID_FRAG); - if (vid_frag != NULL) - vid_frag = isakmp_frag_addcap(vid_frag, - VENDORID_FRAG_BASE); - if (vid_frag == NULL) - plog(LLV_ERROR, LOCATION, NULL, - "Frag vendorID construction failed\n"); - } -#endif -#ifdef ENABLE_NATT - /* Is NAT-T support allowed in the config file? */ - if (iph1->rmconf->nat_traversal) { - /* Advertise NAT-T capability */ - memset (vid_natt, 0, sizeof (vid_natt)); -#ifdef VENDORID_NATT_00 - if ((vid_natt[vid_natt_i] = set_vendorid(VENDORID_NATT_00)) != NULL) - vid_natt_i++; -#endif -#ifdef VENDORID_NATT_02 - if ((vid_natt[vid_natt_i] = set_vendorid(VENDORID_NATT_02)) != NULL) - vid_natt_i++; -#endif -#ifdef VENDORID_NATT_02_N - if ((vid_natt[vid_natt_i] = set_vendorid(VENDORID_NATT_02_N)) != NULL) - vid_natt_i++; -#endif -#ifdef VENDORID_NATT_RFC - if ((vid_natt[vid_natt_i] = set_vendorid(VENDORID_NATT_RFC)) != NULL) - vid_natt_i++; -#endif - } -#endif - - /* set SA payload to propose */ - plist = isakmp_plist_append(plist, iph1->sa, ISAKMP_NPTYPE_SA); - - /* create isakmp ID payload */ - plist = isakmp_plist_append(plist, iph1->id, ISAKMP_NPTYPE_ID); - - /* create isakmp NONCE payload */ - plist = isakmp_plist_append(plist, iph1->nonce, ISAKMP_NPTYPE_NONCE); - -#ifdef ENABLE_FRAG - if (vid_frag) - plist = isakmp_plist_append(plist, vid_frag, ISAKMP_NPTYPE_VID); -#endif -#ifdef ENABLE_HYBRID - if (vid_xauth) - plist = isakmp_plist_append(plist, - vid_xauth, ISAKMP_NPTYPE_VID); - if (vid_unity) - plist = isakmp_plist_append(plist, - vid_unity, ISAKMP_NPTYPE_VID); -#endif -#ifdef ENABLE_DPD - if (iph1->rmconf->dpd) { - vid_dpd = set_vendorid(VENDORID_DPD); - if (vid_dpd != NULL) - plist = isakmp_plist_append(plist, vid_dpd, ISAKMP_NPTYPE_VID); - } -#endif -#ifdef ENABLE_NATT - /* set VID payload for NAT-T */ - for (i = 0; i < vid_natt_i; i++) - plist = isakmp_plist_append(plist, vid_natt[i], ISAKMP_NPTYPE_VID); -#endif - iph1->sendbuf = isakmp_plist_set_all (&plist, iph1); - - -#ifdef HAVE_PRINT_ISAKMP_C - isakmp_printpacket(iph1->sendbuf, iph1->local, iph1->remote, 0); -#endif - - /* send the packet, add to the schedule to resend */ - iph1->retry_counter = iph1->rmconf->retry_counter; - if (isakmp_ph1resend(iph1) == -1) - goto end; - - iph1->status = PHASE1ST_MSG1SENT; - - error = 0; - -end: -#ifdef ENABLE_FRAG - if (vid_frag) - vfree(vid_frag); -#endif -#ifdef ENABLE_NATT - for (i = 0; i < vid_natt_i; i++) - vfree(vid_natt[i]); -#endif -#ifdef ENABLE_HYBRID - if (vid_xauth != NULL) - vfree(vid_xauth); - if (vid_unity != NULL) - vfree(vid_unity); -#endif -#ifdef ENABLE_DPD - if (vid_dpd != NULL) - vfree(vid_dpd); -#endif - - return error; -} - -/* - * receive from responder - * psk: HDR, SA, Idir, Nr_b - * sig: HDR, SA, Idir, Nr_b, [ CR ] - * rsa: HDR, SA, <IDir_b>PubKey_i, <Nr_b>PubKey_i - * rev: HDR, SA, <Nr_b>PubKey_i, <IDir_b>Ke_r - */ -int -base_i2recv(iph1, msg) - struct ph1handle *iph1; - vchar_t *msg; -{ - vchar_t *pbuf = NULL; - struct isakmp_parse_t *pa; - vchar_t *satmp = NULL; - int error = -1; - int vid_numeric; -#ifdef ENABLE_HYBRID - vchar_t *unity_vid; - vchar_t *xauth_vid; -#endif - - /* validity check */ - if (iph1->status != PHASE1ST_MSG1SENT) { - plog(LLV_ERROR, LOCATION, NULL, - "status mismatched %d.\n", iph1->status); - goto end; - } - - /* validate the type of next payload */ - pbuf = isakmp_parse(msg); - if (pbuf == NULL) - goto end; - pa = (struct isakmp_parse_t *)pbuf->v; - - /* SA payload is fixed postion */ - if (pa->type != ISAKMP_NPTYPE_SA) { - plog(LLV_ERROR, LOCATION, iph1->remote, - "received invalid next payload type %d, " - "expecting %d.\n", - pa->type, ISAKMP_NPTYPE_SA); - goto end; - } - if (isakmp_p2ph(&satmp, pa->ptr) < 0) - goto end; - pa++; - - for (/*nothing*/; - pa->type != ISAKMP_NPTYPE_NONE; - pa++) { - - switch (pa->type) { - case ISAKMP_NPTYPE_NONCE: - if (isakmp_p2ph(&iph1->nonce_p, pa->ptr) < 0) - goto end; - break; - case ISAKMP_NPTYPE_ID: - if (isakmp_p2ph(&iph1->id_p, pa->ptr) < 0) - goto end; - break; - case ISAKMP_NPTYPE_VID: - handle_vendorid(iph1, pa->ptr); - break; - default: - /* don't send information, see ident_r1recv() */ - plog(LLV_ERROR, LOCATION, iph1->remote, - "ignore the packet, " - "received unexpecting payload type %d.\n", - pa->type); - goto end; - } - } - - if (iph1->nonce_p == NULL || iph1->id_p == NULL) { - plog(LLV_ERROR, LOCATION, iph1->remote, - "few isakmp message received.\n"); - goto end; - } - - /* verify identifier */ - if (ipsecdoi_checkid1(iph1) != 0) { - plog(LLV_ERROR, LOCATION, iph1->remote, - "invalid ID payload.\n"); - goto end; - } - -#ifdef ENABLE_NATT - if (NATT_AVAILABLE(iph1)) - plog(LLV_INFO, LOCATION, iph1->remote, - "Selected NAT-T version: %s\n", - vid_string_by_id(iph1->natt_options->version)); -#endif - - /* check SA payload and set approval SA for use */ - if (ipsecdoi_checkph1proposal(satmp, iph1) < 0) { - plog(LLV_ERROR, LOCATION, iph1->remote, - "failed to get valid proposal.\n"); - /* XXX send information */ - goto end; - } - VPTRINIT(iph1->sa_ret); - - iph1->status = PHASE1ST_MSG2RECEIVED; - - error = 0; - -end: - if (pbuf) - vfree(pbuf); - if (satmp) - vfree(satmp); - - if (error) { - VPTRINIT(iph1->nonce_p); - VPTRINIT(iph1->id_p); - } - - return error; -} - -/* - * send to responder - * psk: HDR, KE, HASH_I - * sig: HDR, KE, [ CR, ] [CERT,] SIG_I - * rsa: HDR, KE, HASH_I - * rev: HDR, <KE>Ke_i, HASH_I - */ -int -base_i2send(iph1, msg) - struct ph1handle *iph1; - vchar_t *msg; -{ - struct payload_list *plist = NULL; - vchar_t *vid = NULL; - int need_cert = 0; - int error = -1; - - /* validity check */ - if (iph1->status != PHASE1ST_MSG2RECEIVED) { - plog(LLV_ERROR, LOCATION, NULL, - "status mismatched %d.\n", iph1->status); - goto end; - } - - /* fix isakmp index */ - memcpy(&iph1->index.r_ck, &((struct isakmp *)msg->v)->r_ck, - sizeof(cookie_t)); - - /* generate DH public value */ - if (oakley_dh_generate(iph1->approval->dhgrp, - &iph1->dhpub, &iph1->dhpriv) < 0) - goto end; - - /* generate SKEYID to compute hash if not signature mode */ - switch (AUTHMETHOD(iph1)) { - case OAKLEY_ATTR_AUTH_METHOD_RSASIG: - case OAKLEY_ATTR_AUTH_METHOD_DSSSIG: -#ifdef ENABLE_HYBRID - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_I: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_I: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_I: -#endif - break; - default: - if (oakley_skeyid(iph1) < 0) - goto end; - break; - } - - /* generate HASH to send */ - plog(LLV_DEBUG, LOCATION, NULL, "generate HASH_I\n"); - iph1->hash = oakley_ph1hash_base_i(iph1, GENERATE); - if (iph1->hash == NULL) - goto end; - switch (AUTHMETHOD(iph1)) { - case OAKLEY_ATTR_AUTH_METHOD_PSKEY: -#ifdef ENABLE_HYBRID - case FICTIVE_AUTH_METHOD_XAUTH_PSKEY_I: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_I: -#endif - vid = set_vendorid(iph1->approval->vendorid); - - /* create isakmp KE payload */ - plist = isakmp_plist_append(plist, iph1->dhpub, ISAKMP_NPTYPE_KE); - - /* create isakmp HASH payload */ - plist = isakmp_plist_append(plist, iph1->hash, ISAKMP_NPTYPE_HASH); - - /* append vendor id, if needed */ - if (vid) - plist = isakmp_plist_append(plist, vid, ISAKMP_NPTYPE_VID); - break; - case OAKLEY_ATTR_AUTH_METHOD_DSSSIG: - case OAKLEY_ATTR_AUTH_METHOD_RSASIG: -#ifdef ENABLE_HYBRID - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_I: -#endif - /* XXX if there is CR or not ? */ - - if (oakley_getmycert(iph1) < 0) - goto end; - - if (oakley_getsign(iph1) < 0) - goto end; - - if (iph1->cert && iph1->rmconf->send_cert) - need_cert = 1; - - /* create isakmp KE payload */ - plist = isakmp_plist_append(plist, - iph1->dhpub, ISAKMP_NPTYPE_KE); - - /* add CERT payload if there */ - if (need_cert) - plist = isakmp_plist_append(plist, - iph1->cert->pl, ISAKMP_NPTYPE_CERT); - - /* add SIG payload */ - plist = isakmp_plist_append(plist, - iph1->sig, ISAKMP_NPTYPE_SIG); - - break; -#ifdef HAVE_GSSAPI - case OAKLEY_ATTR_AUTH_METHOD_GSSAPI_KRB: - /* ... */ - break; -#endif - case OAKLEY_ATTR_AUTH_METHOD_RSAENC: - case OAKLEY_ATTR_AUTH_METHOD_RSAREV: -#ifdef ENABLE_HYBRID - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_I: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_I: -#endif - break; - } - -#ifdef ENABLE_NATT - /* generate NAT-D payloads */ - if (NATT_AVAILABLE(iph1)) - { - vchar_t *natd[2] = { NULL, NULL }; - - plog (LLV_INFO, LOCATION, NULL, "Adding remote and local NAT-D payloads.\n"); - if ((natd[0] = natt_hash_addr (iph1, iph1->remote)) == NULL) { - plog(LLV_ERROR, LOCATION, NULL, - "NAT-D hashing failed for %s\n", saddr2str(iph1->remote)); - goto end; - } - - if ((natd[1] = natt_hash_addr (iph1, iph1->local)) == NULL) { - plog(LLV_ERROR, LOCATION, NULL, - "NAT-D hashing failed for %s\n", saddr2str(iph1->local)); - goto end; - } - - plist = isakmp_plist_append(plist, natd[0], iph1->natt_options->payload_nat_d); - plist = isakmp_plist_append(plist, natd[1], iph1->natt_options->payload_nat_d); - } -#endif - - iph1->sendbuf = isakmp_plist_set_all (&plist, iph1); - -#ifdef HAVE_PRINT_ISAKMP_C - isakmp_printpacket(iph1->sendbuf, iph1->local, iph1->remote, 0); -#endif - - /* send the packet, add to the schedule to resend */ - iph1->retry_counter = iph1->rmconf->retry_counter; - if (isakmp_ph1resend(iph1) == -1) - goto end; - - /* the sending message is added to the received-list. */ - if (add_recvdpkt(iph1->remote, iph1->local, iph1->sendbuf, msg) == -1) { - plog(LLV_ERROR , LOCATION, NULL, - "failed to add a response packet to the tree.\n"); - goto end; - } - - iph1->status = PHASE1ST_MSG2SENT; - - error = 0; - -end: - if (vid) - vfree(vid); - return error; -} - -/* - * receive from responder - * psk: HDR, KE, HASH_R - * sig: HDR, KE, [CERT,] SIG_R - * rsa: HDR, KE, HASH_R - * rev: HDR, <KE>_Ke_r, HASH_R - */ -int -base_i3recv(iph1, msg) - struct ph1handle *iph1; - vchar_t *msg; -{ - vchar_t *pbuf = NULL; - struct isakmp_parse_t *pa; - int error = -1; - int ptype; -#ifdef ENABLE_NATT - vchar_t *natd_received; - int natd_seq = 0, natd_verified; -#endif - - /* validity check */ - if (iph1->status != PHASE1ST_MSG2SENT) { - plog(LLV_ERROR, LOCATION, NULL, - "status mismatched %d.\n", iph1->status); - goto end; - } - - /* validate the type of next payload */ - pbuf = isakmp_parse(msg); - if (pbuf == NULL) - goto end; - - for (pa = (struct isakmp_parse_t *)pbuf->v; - pa->type != ISAKMP_NPTYPE_NONE; - pa++) { - - switch (pa->type) { - case ISAKMP_NPTYPE_KE: - if (isakmp_p2ph(&iph1->dhpub_p, pa->ptr) < 0) - goto end; - break; - case ISAKMP_NPTYPE_HASH: - iph1->pl_hash = (struct isakmp_pl_hash *)pa->ptr; - break; - case ISAKMP_NPTYPE_CERT: - if (oakley_savecert(iph1, pa->ptr) < 0) - goto end; - break; - case ISAKMP_NPTYPE_SIG: - if (isakmp_p2ph(&iph1->sig_p, pa->ptr) < 0) - goto end; - break; - case ISAKMP_NPTYPE_VID: - handle_vendorid(iph1, pa->ptr); - break; - -#ifdef ENABLE_NATT - case ISAKMP_NPTYPE_NATD_DRAFT: - case ISAKMP_NPTYPE_NATD_RFC: - if (NATT_AVAILABLE(iph1) && iph1->natt_options && - pa->type == iph1->natt_options->payload_nat_d) { - natd_received = NULL; - if (isakmp_p2ph (&natd_received, pa->ptr) < 0) - goto end; - - /* set both bits first so that we can clear them - upon verifying hashes */ - if (natd_seq == 0) - iph1->natt_flags |= NAT_DETECTED; - - /* this function will clear appropriate bits bits - from iph1->natt_flags */ - natd_verified = natt_compare_addr_hash (iph1, - natd_received, natd_seq++); - - plog (LLV_INFO, LOCATION, NULL, "NAT-D payload #%d %s\n", - natd_seq - 1, - natd_verified ? "verified" : "doesn't match"); - - vfree (natd_received); - break; - } - /* passthrough to default... */ -#endif - - default: - /* don't send information, see ident_r1recv() */ - plog(LLV_ERROR, LOCATION, iph1->remote, - "ignore the packet, " - "received unexpecting payload type %d.\n", - pa->type); - goto end; - } - } - -#ifdef ENABLE_NATT - if (NATT_AVAILABLE(iph1)) { - plog (LLV_INFO, LOCATION, NULL, "NAT %s %s%s\n", - iph1->natt_flags & NAT_DETECTED ? - "detected:" : "not detected", - iph1->natt_flags & NAT_DETECTED_ME ? "ME " : "", - iph1->natt_flags & NAT_DETECTED_PEER ? "PEER" : ""); - if (iph1->natt_flags & NAT_DETECTED) - natt_float_ports (iph1); - } -#endif - - /* payload existency check */ - /* validate authentication value */ - ptype = oakley_validate_auth(iph1); - if (ptype != 0) { - if (ptype == -1) { - /* message printed inner oakley_validate_auth() */ - goto end; - } - EVT_PUSH(iph1->local, iph1->remote, - EVTT_PEERPH1AUTH_FAILED, NULL); - isakmp_info_send_n1(iph1, ptype, NULL); - goto end; - } - - /* compute sharing secret of DH */ - if (oakley_dh_compute(iph1->approval->dhgrp, iph1->dhpub, - iph1->dhpriv, iph1->dhpub_p, &iph1->dhgxy) < 0) - goto end; - - /* generate SKEYID to compute hash if signature mode */ - switch (AUTHMETHOD(iph1)) { - case OAKLEY_ATTR_AUTH_METHOD_RSASIG: - case OAKLEY_ATTR_AUTH_METHOD_DSSSIG: -#ifdef ENABLE_HYBRID - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_I: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_I: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_I: -#endif - if (oakley_skeyid(iph1) < 0) - goto end; - break; - default: - break; - } - - /* generate SKEYIDs & IV & final cipher key */ - if (oakley_skeyid_dae(iph1) < 0) - goto end; - if (oakley_compute_enckey(iph1) < 0) - goto end; - if (oakley_newiv(iph1) < 0) - goto end; - - /* see handler.h about IV synchronization. */ - memcpy(iph1->ivm->iv->v, iph1->ivm->ive->v, iph1->ivm->iv->l); - - /* set encryption flag */ - iph1->flags |= ISAKMP_FLAG_E; - - iph1->status = PHASE1ST_MSG3RECEIVED; - - error = 0; - -end: - if (pbuf) - vfree(pbuf); - - if (error) { - VPTRINIT(iph1->dhpub_p); - oakley_delcert(iph1->cert_p); - iph1->cert_p = NULL; - oakley_delcert(iph1->crl_p); - iph1->crl_p = NULL; - VPTRINIT(iph1->sig_p); - } - - return error; -} - -/* - * status update and establish isakmp sa. - */ -int -base_i3send(iph1, msg) - struct ph1handle *iph1; - vchar_t *msg; -{ - int error = -1; - - /* validity check */ - if (iph1->status != PHASE1ST_MSG3RECEIVED) { - plog(LLV_ERROR, LOCATION, NULL, - "status mismatched %d.\n", iph1->status); - goto end; - } - - iph1->status = PHASE1ST_ESTABLISHED; - - error = 0; - -end: - return error; -} - -/* - * receive from initiator - * psk: HDR, SA, Idii, Ni_b - * sig: HDR, SA, Idii, Ni_b - * rsa: HDR, SA, [HASH(1),] <IDii_b>Pubkey_r, <Ni_b>Pubkey_r - * rev: HDR, SA, [HASH(1),] <Ni_b>Pubkey_r, <IDii_b>Ke_i - */ -int -base_r1recv(iph1, msg) - struct ph1handle *iph1; - vchar_t *msg; -{ - vchar_t *pbuf = NULL; - struct isakmp_parse_t *pa; - int error = -1; - int vid_numeric; - - /* validity check */ - if (iph1->status != PHASE1ST_START) { - plog(LLV_ERROR, LOCATION, NULL, - "status mismatched %d.\n", iph1->status); - goto end; - } - - /* validate the type of next payload */ - /* - * NOTE: XXX even if multiple VID, we'll silently ignore those. - */ - pbuf = isakmp_parse(msg); - if (pbuf == NULL) - goto end; - pa = (struct isakmp_parse_t *)pbuf->v; - - /* check the position of SA payload */ - if (pa->type != ISAKMP_NPTYPE_SA) { - plog(LLV_ERROR, LOCATION, iph1->remote, - "received invalid next payload type %d, " - "expecting %d.\n", - pa->type, ISAKMP_NPTYPE_SA); - goto end; - } - if (isakmp_p2ph(&iph1->sa, pa->ptr) < 0) - goto end; - pa++; - - for (/*nothing*/; - pa->type != ISAKMP_NPTYPE_NONE; - pa++) { - - switch (pa->type) { - case ISAKMP_NPTYPE_NONCE: - if (isakmp_p2ph(&iph1->nonce_p, pa->ptr) < 0) - goto end; - break; - case ISAKMP_NPTYPE_ID: - if (isakmp_p2ph(&iph1->id_p, pa->ptr) < 0) - goto end; - break; - case ISAKMP_NPTYPE_VID: - vid_numeric = handle_vendorid(iph1, pa->ptr); -#ifdef ENABLE_FRAG - if ((vid_numeric == VENDORID_FRAG) && - (vendorid_frag_cap(pa->ptr) & VENDORID_FRAG_BASE)) - iph1->frag = 1; -#endif - break; - default: - /* don't send information, see ident_r1recv() */ - plog(LLV_ERROR, LOCATION, iph1->remote, - "ignore the packet, " - "received unexpecting payload type %d.\n", - pa->type); - goto end; - } - } - - if (iph1->nonce_p == NULL || iph1->id_p == NULL) { - plog(LLV_ERROR, LOCATION, iph1->remote, - "few isakmp message received.\n"); - goto end; - } - - /* verify identifier */ - if (ipsecdoi_checkid1(iph1) != 0) { - plog(LLV_ERROR, LOCATION, iph1->remote, - "invalid ID payload.\n"); - goto end; - } - -#ifdef ENABLE_NATT - if (NATT_AVAILABLE(iph1)) - plog(LLV_INFO, LOCATION, iph1->remote, - "Selected NAT-T version: %s\n", - vid_string_by_id(iph1->natt_options->version)); -#endif - - /* check SA payload and set approval SA for use */ - if (ipsecdoi_checkph1proposal(iph1->sa, iph1) < 0) { - plog(LLV_ERROR, LOCATION, iph1->remote, - "failed to get valid proposal.\n"); - /* XXX send information */ - goto end; - } - - iph1->status = PHASE1ST_MSG1RECEIVED; - - error = 0; - -end: - if (pbuf) - vfree(pbuf); - - if (error) { - VPTRINIT(iph1->sa); - VPTRINIT(iph1->nonce_p); - VPTRINIT(iph1->id_p); - } - - return error; -} - -/* - * send to initiator - * psk: HDR, SA, Idir, Nr_b - * sig: HDR, SA, Idir, Nr_b, [ CR ] - * rsa: HDR, SA, <IDir_b>PubKey_i, <Nr_b>PubKey_i - * rev: HDR, SA, <Nr_b>PubKey_i, <IDir_b>Ke_r - */ -int -base_r1send(iph1, msg) - struct ph1handle *iph1; - vchar_t *msg; -{ - struct payload_list *plist = NULL; - int error = -1; -#ifdef ENABLE_NATT - vchar_t *vid_natt = NULL; -#endif -#ifdef ENABLE_HYBRID - vchar_t *vid_xauth = NULL; - vchar_t *vid_unity = NULL; -#endif -#ifdef ENABLE_FRAG - vchar_t *vid_frag = NULL; -#endif -#ifdef ENABLE_DPD - vchar_t *vid_dpd = NULL; -#endif - - /* validity check */ - if (iph1->status != PHASE1ST_MSG1RECEIVED) { - plog(LLV_ERROR, LOCATION, NULL, - "status mismatched %d.\n", iph1->status); - goto end; - } - - /* set responder's cookie */ - isakmp_newcookie((caddr_t)&iph1->index.r_ck, iph1->remote, iph1->local); - - /* make ID payload into isakmp status */ - if (ipsecdoi_setid1(iph1) < 0) - goto end; - - /* generate NONCE value */ - iph1->nonce = eay_set_random(iph1->rmconf->nonce_size); - if (iph1->nonce == NULL) - goto end; - - /* set SA payload to reply */ - plist = isakmp_plist_append(plist, iph1->sa_ret, ISAKMP_NPTYPE_SA); - - /* create isakmp ID payload */ - plist = isakmp_plist_append(plist, iph1->id, ISAKMP_NPTYPE_ID); - - /* create isakmp NONCE payload */ - plist = isakmp_plist_append(plist, iph1->nonce, ISAKMP_NPTYPE_NONCE); - -#ifdef ENABLE_NATT - /* has the peer announced nat-t? */ - if (NATT_AVAILABLE(iph1)) - vid_natt = set_vendorid(iph1->natt_options->version); - if (vid_natt) - plist = isakmp_plist_append(plist, vid_natt, ISAKMP_NPTYPE_VID); -#endif -#ifdef ENABLE_HYBRID - if (iph1->mode_cfg->flags & ISAKMP_CFG_VENDORID_XAUTH) { - plog (LLV_INFO, LOCATION, NULL, "Adding xauth VID payload.\n"); - if ((vid_xauth = set_vendorid(VENDORID_XAUTH)) == NULL) { - plog(LLV_ERROR, LOCATION, NULL, - "Cannot create Xauth vendor ID\n"); - goto end; - } - plist = isakmp_plist_append(plist, - vid_xauth, ISAKMP_NPTYPE_VID); - } - - if (iph1->mode_cfg->flags & ISAKMP_CFG_VENDORID_UNITY) { - if ((vid_unity = set_vendorid(VENDORID_UNITY)) == NULL) { - plog(LLV_ERROR, LOCATION, NULL, - "Cannot create Unity vendor ID\n"); - goto end; - } - plist = isakmp_plist_append(plist, - vid_unity, ISAKMP_NPTYPE_VID); - } -#endif -#ifdef ENABLE_DPD - /* - * Only send DPD support if remote announced DPD - * and if DPD support is active - */ - if (iph1->dpd_support && iph1->rmconf->dpd) { - if ((vid_dpd = set_vendorid(VENDORID_DPD)) == NULL) { - plog(LLV_ERROR, LOCATION, NULL, - "DPD vendorID construction failed\n"); - } else { - plist = isakmp_plist_append(plist, vid_dpd, - ISAKMP_NPTYPE_VID); - } - } -#endif -#ifdef ENABLE_FRAG - if (iph1->rmconf->ike_frag) { - if ((vid_frag = set_vendorid(VENDORID_FRAG)) == NULL) { - plog(LLV_ERROR, LOCATION, NULL, - "Frag vendorID construction failed\n"); - } else { - vid_frag = isakmp_frag_addcap(vid_frag, - VENDORID_FRAG_BASE); - plist = isakmp_plist_append(plist, - vid_frag, ISAKMP_NPTYPE_VID); - } - } -#endif - - iph1->sendbuf = isakmp_plist_set_all (&plist, iph1); - -#ifdef HAVE_PRINT_ISAKMP_C - isakmp_printpacket(iph1->sendbuf, iph1->local, iph1->remote, 0); -#endif - - /* send the packet, add to the schedule to resend */ - iph1->retry_counter = iph1->rmconf->retry_counter; - if (isakmp_ph1resend(iph1) == -1) { - iph1 = NULL; - goto end; - } - - /* the sending message is added to the received-list. */ - if (add_recvdpkt(iph1->remote, iph1->local, iph1->sendbuf, msg) == -1) { - plog(LLV_ERROR , LOCATION, NULL, - "failed to add a response packet to the tree.\n"); - goto end; - } - - iph1->status = PHASE1ST_MSG1SENT; - - error = 0; - -end: -#ifdef ENABLE_NATT - if (vid_natt) - vfree(vid_natt); -#endif -#ifdef ENABLE_HYBRID - if (vid_xauth != NULL) - vfree(vid_xauth); - if (vid_unity != NULL) - vfree(vid_unity); -#endif -#ifdef ENABLE_FRAG - if (vid_frag) - vfree(vid_frag); -#endif -#ifdef ENABLE_DPD - if (vid_dpd) - vfree(vid_dpd); -#endif - - if (iph1 != NULL) - VPTRINIT(iph1->sa_ret); - - return error; -} - -/* - * receive from initiator - * psk: HDR, KE, HASH_I - * sig: HDR, KE, [ CR, ] [CERT,] SIG_I - * rsa: HDR, KE, HASH_I - * rev: HDR, <KE>Ke_i, HASH_I - */ -int -base_r2recv(iph1, msg) - struct ph1handle *iph1; - vchar_t *msg; -{ - vchar_t *pbuf = NULL; - struct isakmp_parse_t *pa; - int error = -1; - int ptype; -#ifdef ENABLE_NATT - int natd_seq = 0; -#endif - - /* validity check */ - if (iph1->status != PHASE1ST_MSG1SENT) { - plog(LLV_ERROR, LOCATION, NULL, - "status mismatched %d.\n", iph1->status); - goto end; - } - - /* validate the type of next payload */ - pbuf = isakmp_parse(msg); - if (pbuf == NULL) - goto end; - - iph1->pl_hash = NULL; - - for (pa = (struct isakmp_parse_t *)pbuf->v; - pa->type != ISAKMP_NPTYPE_NONE; - pa++) { - - switch (pa->type) { - case ISAKMP_NPTYPE_KE: - if (isakmp_p2ph(&iph1->dhpub_p, pa->ptr) < 0) - goto end; - break; - case ISAKMP_NPTYPE_HASH: - iph1->pl_hash = (struct isakmp_pl_hash *)pa->ptr; - break; - case ISAKMP_NPTYPE_CERT: - if (oakley_savecert(iph1, pa->ptr) < 0) - goto end; - break; - case ISAKMP_NPTYPE_SIG: - if (isakmp_p2ph(&iph1->sig_p, pa->ptr) < 0) - goto end; - break; - case ISAKMP_NPTYPE_VID: - handle_vendorid(iph1, pa->ptr); - break; - -#ifdef ENABLE_NATT - case ISAKMP_NPTYPE_NATD_DRAFT: - case ISAKMP_NPTYPE_NATD_RFC: - if (pa->type == iph1->natt_options->payload_nat_d) - { - vchar_t *natd_received = NULL; - int natd_verified; - - if (isakmp_p2ph (&natd_received, pa->ptr) < 0) - goto end; - - if (natd_seq == 0) - iph1->natt_flags |= NAT_DETECTED; - - natd_verified = natt_compare_addr_hash (iph1, - natd_received, natd_seq++); - - plog (LLV_INFO, LOCATION, NULL, "NAT-D payload #%d %s\n", - natd_seq - 1, - natd_verified ? "verified" : "doesn't match"); - - vfree (natd_received); - break; - } - /* passthrough to default... */ -#endif - - default: - /* don't send information, see ident_r1recv() */ - plog(LLV_ERROR, LOCATION, iph1->remote, - "ignore the packet, " - "received unexpecting payload type %d.\n", - pa->type); - goto end; - } - } - - /* generate DH public value */ - if (oakley_dh_generate(iph1->approval->dhgrp, - &iph1->dhpub, &iph1->dhpriv) < 0) - goto end; - - /* compute sharing secret of DH */ - if (oakley_dh_compute(iph1->approval->dhgrp, iph1->dhpub, - iph1->dhpriv, iph1->dhpub_p, &iph1->dhgxy) < 0) - goto end; - - /* generate SKEYID */ - if (oakley_skeyid(iph1) < 0) - goto end; - -#ifdef ENABLE_NATT - if (NATT_AVAILABLE(iph1)) - plog (LLV_INFO, LOCATION, NULL, "NAT %s %s%s\n", - iph1->natt_flags & NAT_DETECTED ? - "detected:" : "not detected", - iph1->natt_flags & NAT_DETECTED_ME ? "ME " : "", - iph1->natt_flags & NAT_DETECTED_PEER ? "PEER" : ""); -#endif - - /* payload existency check */ - /* validate authentication value */ - ptype = oakley_validate_auth(iph1); - if (ptype != 0) { - if (ptype == -1) { - /* message printed inner oakley_validate_auth() */ - goto end; - } - EVT_PUSH(iph1->local, iph1->remote, - EVTT_PEERPH1AUTH_FAILED, NULL); - isakmp_info_send_n1(iph1, ptype, NULL); - goto end; - } - - iph1->status = PHASE1ST_MSG2RECEIVED; - - error = 0; - -end: - if (pbuf) - vfree(pbuf); - - if (error) { - VPTRINIT(iph1->dhpub_p); - oakley_delcert(iph1->cert_p); - iph1->cert_p = NULL; - oakley_delcert(iph1->crl_p); - iph1->crl_p = NULL; - VPTRINIT(iph1->sig_p); - } - - return error; -} - -/* - * send to initiator - * psk: HDR, KE, HASH_R - * sig: HDR, KE, [CERT,] SIG_R - * rsa: HDR, KE, HASH_R - * rev: HDR, <KE>_Ke_r, HASH_R - */ -int -base_r2send(iph1, msg) - struct ph1handle *iph1; - vchar_t *msg; -{ - struct payload_list *plist = NULL; - vchar_t *vid = NULL; - int need_cert = 0; - int error = -1; - - /* validity check */ - if (iph1->status != PHASE1ST_MSG2RECEIVED) { - plog(LLV_ERROR, LOCATION, NULL, - "status mismatched %d.\n", iph1->status); - goto end; - } - - /* generate HASH to send */ - plog(LLV_DEBUG, LOCATION, NULL, "generate HASH_I\n"); - switch (AUTHMETHOD(iph1)) { - case OAKLEY_ATTR_AUTH_METHOD_PSKEY: -#ifdef ENABLE_HYBRID - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_R: -#endif - case OAKLEY_ATTR_AUTH_METHOD_RSAENC: - case OAKLEY_ATTR_AUTH_METHOD_RSAREV: -#ifdef ENABLE_HYBRID - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_R: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_R: -#endif - iph1->hash = oakley_ph1hash_common(iph1, GENERATE); - break; - case OAKLEY_ATTR_AUTH_METHOD_DSSSIG: - case OAKLEY_ATTR_AUTH_METHOD_RSASIG: -#ifdef ENABLE_HYBRID - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_R: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_R: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_R: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_R: -#endif -#ifdef HAVE_GSSAPI - case OAKLEY_ATTR_AUTH_METHOD_GSSAPI_KRB: -#endif - iph1->hash = oakley_ph1hash_base_r(iph1, GENERATE); - break; - default: - plog(LLV_ERROR, LOCATION, NULL, - "invalid authentication method %d\n", - iph1->approval->authmethod); - goto end; - } - if (iph1->hash == NULL) - goto end; - - switch (AUTHMETHOD(iph1)) { - case OAKLEY_ATTR_AUTH_METHOD_PSKEY: -#ifdef ENABLE_HYBRID - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_R: -#endif - vid = set_vendorid(iph1->approval->vendorid); - - /* create isakmp KE payload */ - plist = isakmp_plist_append(plist, - iph1->dhpub, ISAKMP_NPTYPE_KE); - - /* create isakmp HASH payload */ - plist = isakmp_plist_append(plist, - iph1->hash, ISAKMP_NPTYPE_HASH); - - /* append vendor id, if needed */ - if (vid) - plist = isakmp_plist_append(plist, - vid, ISAKMP_NPTYPE_VID); - break; - case OAKLEY_ATTR_AUTH_METHOD_DSSSIG: - case OAKLEY_ATTR_AUTH_METHOD_RSASIG: -#ifdef ENABLE_HYBRID - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_DSSSIG_R: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_R: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_DSS_R: - case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_R: -#endif - /* XXX if there is CR or not ? */ - - if (oakley_getmycert(iph1) < 0) - goto end; - - if (oakley_getsign(iph1) < 0) - goto end; - - if (iph1->cert && iph1->rmconf->send_cert) - need_cert = 1; - - /* create isakmp KE payload */ - plist = isakmp_plist_append(plist, - iph1->dhpub, ISAKMP_NPTYPE_KE); - - /* add CERT payload if there */ - if (need_cert) - plist = isakmp_plist_append(plist, - iph1->cert->pl, ISAKMP_NPTYPE_CERT); - /* add SIG payload */ - plist = isakmp_plist_append(plist, - iph1->sig, ISAKMP_NPTYPE_SIG); - break; -#ifdef HAVE_GSSAPI - case OAKLEY_ATTR_AUTH_METHOD_GSSAPI_KRB: - /* ... */ - break; -#endif - case OAKLEY_ATTR_AUTH_METHOD_RSAENC: - case OAKLEY_ATTR_AUTH_METHOD_RSAREV: -#ifdef ENABLE_HYBRID - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAENC_R: - case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSAREV_R: -#endif - break; - } - -#ifdef ENABLE_NATT - /* generate NAT-D payloads */ - if (NATT_AVAILABLE(iph1)) { - vchar_t *natd[2] = { NULL, NULL }; - - plog(LLV_INFO, LOCATION, - NULL, "Adding remote and local NAT-D payloads.\n"); - if ((natd[0] = natt_hash_addr(iph1, iph1->remote)) == NULL) { - plog(LLV_ERROR, LOCATION, NULL, - "NAT-D hashing failed for %s\n", - saddr2str(iph1->remote)); - goto end; - } - - if ((natd[1] = natt_hash_addr(iph1, iph1->local)) == NULL) { - plog(LLV_ERROR, LOCATION, NULL, - "NAT-D hashing failed for %s\n", - saddr2str(iph1->local)); - goto end; - } - - plist = isakmp_plist_append(plist, - natd[0], iph1->natt_options->payload_nat_d); - plist = isakmp_plist_append(plist, - natd[1], iph1->natt_options->payload_nat_d); - } -#endif - - iph1->sendbuf = isakmp_plist_set_all(&plist, iph1); - -#ifdef HAVE_PRINT_ISAKMP_C - isakmp_printpacket(iph1->sendbuf, iph1->local, iph1->remote, 0); -#endif - - /* send HDR;KE;NONCE to responder */ - if (isakmp_send(iph1, iph1->sendbuf) < 0) - goto end; - - /* the sending message is added to the received-list. */ - if (add_recvdpkt(iph1->remote, iph1->local, iph1->sendbuf, msg) == -1) { - plog(LLV_ERROR , LOCATION, NULL, - "failed to add a response packet to the tree.\n"); - goto end; - } - - /* generate SKEYIDs & IV & final cipher key */ - if (oakley_skeyid_dae(iph1) < 0) - goto end; - if (oakley_compute_enckey(iph1) < 0) - goto end; - if (oakley_newiv(iph1) < 0) - goto end; - - /* set encryption flag */ - iph1->flags |= ISAKMP_FLAG_E; - - iph1->status = PHASE1ST_ESTABLISHED; - - error = 0; - -end: - if (vid) - vfree(vid); - return error; -} |