#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"
#include "fsm.h"
#include "localconf.h"
#include "remoteconf.h"
#include "isakmp_var.h"
#include "isakmp.h"
#include "oakley.h"
#include "handler.h"
#include "ipsec_doi.h"
#include "crypto_openssl.h"
#include "pfkey.h"
#include "isakmp_agg.h"
#include "isakmp_inf.h"
#ifdef ENABLE_HYBRID
#include "isakmp_xauth.h"
#include "isakmp_cfg.h"
#endif
#ifdef ENABLE_FRAG
#include "isakmp_frag.h"
#endif
#include "vendorid.h"
#include "strnames.h"
#ifdef ENABLE_NATT
#include "nattraversal.h"
#endif
#include "vpn_control.h"
#include "vpn_control_var.h"
#include "ipsecSessionTracer.h"
#include "ipsecMessageTracer.h"
#ifndef HAVE_OPENSSL
#include <Security/SecDH.h>
#endif
int
agg_i1send(iph1, msg)
phase1_handle_t *iph1;
vchar_t *msg;
{
struct payload_list *plist = NULL;
int need_cr = 0;
vchar_t *cr = NULL;
int error = -1;
#ifdef ENABLE_NATT
vchar_t *vid_natt[MAX_NATT_VID_COUNT] = { NULL };
int i;
#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
if (iph1->status != IKEV1_STATE_AGG_I_START) {
plog(ASL_LEVEL_ERR,
"status mismatched %d.\n", iph1->status);
goto end;
}
if (msg != NULL) {
plog(ASL_LEVEL_ERR,
"msg has to be NULL in this function.\n");
goto end;
}
memset(&iph1->index, 0, sizeof(iph1->index));
isakmp_newcookie((caddr_t)&iph1->index, iph1->remote, iph1->local);
if (ipsecdoi_setid1(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to set ID");
goto end;
}
iph1->sa = ipsecdoi_setph1proposal(iph1);
if (iph1->sa == NULL) {
plog(ASL_LEVEL_ERR,
"failed to set proposal");
goto end;
}
if (iph1->rmconf->dhgrp == NULL) {
plog(ASL_LEVEL_ERR,
"configuration failure about DH group.\n");
goto end;
}
#ifdef HAVE_OPENSSL
if (oakley_dh_generate(iph1->rmconf->dhgrp,
&iph1->dhpub, &iph1->dhpriv) < 0) {
#else
if (oakley_dh_generate(iph1->rmconf->dhgrp,
&iph1->dhpub, &iph1->publicKeySize, &iph1->dhC) < 0) {
#endif
plog(ASL_LEVEL_ERR,
"failed to generate DH");
goto end;
}
iph1->nonce = eay_set_random(iph1->rmconf->nonce_size);
if (iph1->nonce == NULL) {
plog(ASL_LEVEL_ERR,
"failed to generate NONCE");
goto end;
}
#ifdef ENABLE_HYBRID
switch (RMAUTHMETHOD(iph1)) {
case FICTIVE_AUTH_METHOD_XAUTH_PSKEY_I:
case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_I:
case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_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(ASL_LEVEL_ERR,
"Xauth vendor ID generation failed\n");
if ((vid_unity = set_vendorid(VENDORID_UNITY)) == NULL)
plog(ASL_LEVEL_ERR,
"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_AGG);
if (vid_frag == NULL)
plog(ASL_LEVEL_ERR,
"Frag vendorID construction failed\n");
}
#endif
if (iph1->rmconf->send_cr
&& oakley_needcr(iph1->rmconf->proposal->authmethod)) {
need_cr = 1;
cr = oakley_getcr(iph1);
if (cr == NULL) {
plog(ASL_LEVEL_ERR,
"failed to get CR");
goto end;
}
}
plog(ASL_LEVEL_DEBUG, "authmethod is %s\n",
s_oakley_attr_method(iph1->rmconf->proposal->authmethod));
plist = isakmp_plist_append(plist, iph1->sa, ISAKMP_NPTYPE_SA);
plist = isakmp_plist_append(plist, iph1->dhpub, ISAKMP_NPTYPE_KE);
plist = isakmp_plist_append(plist, iph1->nonce, ISAKMP_NPTYPE_NONCE);
plist = isakmp_plist_append(plist, iph1->id, ISAKMP_NPTYPE_ID);
if (need_cr)
plist = isakmp_plist_append(plist, cr, ISAKMP_NPTYPE_CR);
#ifdef ENABLE_FRAG
if (vid_frag)
plist = isakmp_plist_append(plist, vid_frag, ISAKMP_NPTYPE_VID);
#endif
#ifdef ENABLE_NATT
if (iph1->rmconf->nat_traversal)
plist = isakmp_plist_append_natt_vids(plist, vid_natt);
#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
iph1->sendbuf = isakmp_plist_set_all (&plist, iph1);
#ifdef HAVE_PRINT_ISAKMP_C
isakmp_printpacket(iph1->sendbuf, iph1->local, iph1->remote, 0);
#endif
iph1->retry_counter = iph1->rmconf->retry_counter;
if (isakmp_ph1resend(iph1) == -1) {
plog(ASL_LEVEL_ERR,
"failed to send packet");
goto end;
}
fsm_set_state(&iph1->status, IKEV1_STATE_AGG_I_MSG1SENT);
error = 0;
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_TX_SUCC,
CONSTSTR("Initiator, Aggressive-Mode message 1"),
CONSTSTR(NULL));
end:
if (error) {
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_TX_FAIL,
CONSTSTR("Initiator, Aggressive-Mode Message 1"),
CONSTSTR("Failed to transmit Aggressive-Mode Message 1"));
}
if (cr)
vfree(cr);
#ifdef ENABLE_FRAG
if (vid_frag)
vfree(vid_frag);
#endif
#ifdef ENABLE_NATT
for (i = 0; i < MAX_NATT_VID_COUNT && vid_natt[i] != NULL; 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;
}
int
agg_i2recv(iph1, msg)
phase1_handle_t *iph1;
vchar_t *msg;
{
vchar_t *pbuf = NULL;
struct isakmp_parse_t *pa;
vchar_t *satmp = NULL;
int error = -1;
int vid_numeric;
int ptype;
int received_cert = 0;
#ifdef ENABLE_NATT
int natd_seq = 0;
struct natd_payload {
int seq;
vchar_t *payload;
TAILQ_ENTRY(natd_payload) chain;
};
TAILQ_HEAD(_natd_payload, natd_payload) natd_tree;
TAILQ_INIT(&natd_tree);
#endif
if (iph1->status != IKEV1_STATE_AGG_I_MSG1SENT) {
plog(ASL_LEVEL_ERR,
"status mismatched %d.\n", iph1->status);
goto end;
}
pbuf = isakmp_parse(msg);
if (pbuf == NULL) {
plog(ASL_LEVEL_ERR,
"failed to parse msg");
goto end;
}
pa = ALIGNED_CAST(struct isakmp_parse_t *)pbuf->v;
iph1->pl_hash = NULL;
if (pa->type != ISAKMP_NPTYPE_SA) {
plog(ASL_LEVEL_ERR,
"received invalid next payload type %d, "
"expecting %d.\n",
pa->type, ISAKMP_NPTYPE_SA);
goto end;
}
if (isakmp_p2ph(&satmp, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process SA payload");
goto end;
}
pa++;
for (;
pa->type != ISAKMP_NPTYPE_NONE;
pa++) {
switch (pa->type) {
case ISAKMP_NPTYPE_KE:
if (isakmp_p2ph(&iph1->dhpub_p, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process KE payload");
goto end;
}
break;
case ISAKMP_NPTYPE_NONCE:
if (isakmp_p2ph(&iph1->nonce_p, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process NONCE payload");
goto end;
}
break;
case ISAKMP_NPTYPE_ID:
if (isakmp_p2ph(&iph1->id_p, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process ID payload");
goto end;
}
break;
case ISAKMP_NPTYPE_HASH:
iph1->pl_hash = (struct isakmp_pl_hash *)pa->ptr;
break;
case ISAKMP_NPTYPE_CR:
if (oakley_savecr(iph1, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process CR payload");
goto end;
}
break;
case ISAKMP_NPTYPE_CERT:
if (oakley_savecert(iph1, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process CERT payload");
goto end;
}
received_cert = 1;
break;
case ISAKMP_NPTYPE_SIG:
if (isakmp_p2ph(&iph1->sig_p, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process SIG payload");
goto end;
}
break;
case ISAKMP_NPTYPE_VID:
vid_numeric = check_vendorid(pa->ptr);
#ifdef ENABLE_NATT
if (iph1->rmconf->nat_traversal &&
natt_vendorid(vid_numeric))
natt_handle_vendorid(iph1, vid_numeric);
#endif
#ifdef ENABLE_HYBRID
switch (vid_numeric) {
case VENDORID_XAUTH:
iph1->mode_cfg->flags |=
ISAKMP_CFG_VENDORID_XAUTH;
break;
case VENDORID_UNITY:
iph1->mode_cfg->flags |=
ISAKMP_CFG_VENDORID_UNITY;
break;
default:
break;
}
#endif
#ifdef ENABLE_DPD
if (vid_numeric == VENDORID_DPD && iph1->rmconf->dpd) {
iph1->dpd_support=1;
plog(ASL_LEVEL_DEBUG,
"remote supports DPD\n");
}
#endif
#ifdef ENABLE_FRAG
if ((vid_numeric == VENDORID_FRAG) &&
(vendorid_frag_cap(pa->ptr) & VENDORID_FRAG_AGG)) {
plog(ASL_LEVEL_DEBUG,
"remote supports FRAGMENTATION\n");
iph1->frag = 1;
}
#endif
break;
case ISAKMP_NPTYPE_N:
isakmp_check_notify(pa->ptr, iph1);
break;
#ifdef ENABLE_NATT
case ISAKMP_NPTYPE_NATD_DRAFT:
case ISAKMP_NPTYPE_NATD_RFC:
case ISAKMP_NPTYPE_NATD_BADDRAFT:
if (NATT_AVAILABLE(iph1) && iph1->natt_options != NULL &&
pa->type == iph1->natt_options->payload_nat_d) {
struct natd_payload *natd;
natd = (struct natd_payload *)racoon_malloc(sizeof(*natd));
if (!natd) {
plog(ASL_LEVEL_ERR,
"failed to pre-process NATD payload");
goto end;
}
natd->payload = NULL;
if (isakmp_p2ph (&natd->payload, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process NATD payload");
racoon_free(natd);
goto end;
}
natd->seq = natd_seq++;
TAILQ_INSERT_TAIL(&natd_tree, natd, chain);
break;
}
break;
#endif
default:
plog(ASL_LEVEL_ERR,
"ignore the packet, "
"received unexpecting payload type %d.\n",
pa->type);
goto end;
}
}
if (received_cert) {
oakley_verify_certid(iph1);
}
if (iph1->dhpub_p == NULL || iph1->nonce_p == NULL) {
plog(ASL_LEVEL_ERR,
"few isakmp message received.\n");
goto end;
}
if (ipsecdoi_checkid1(iph1) != 0) {
plog(ASL_LEVEL_ERR,
"invalid ID payload.\n");
goto end;
}
if (ipsecdoi_checkph1proposal(satmp, iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to get valid proposal.\n");
goto end;
}
VPTRINIT(iph1->sa_ret);
memcpy(&iph1->index.r_ck, &((struct isakmp *)msg->v)->r_ck,
sizeof(cookie_t));
#ifdef ENABLE_NATT
if (NATT_AVAILABLE(iph1)) {
struct natd_payload *natd = NULL;
int natd_verified;
plog(ASL_LEVEL_NOTICE,
"Selected NAT-T version: %s\n",
vid_string_by_id(iph1->natt_options->version));
iph1->natt_flags |= NAT_DETECTED;
while ((natd = TAILQ_FIRST(&natd_tree)) != NULL) {
natd_verified = natt_compare_addr_hash (iph1,
natd->payload, natd->seq);
plog (ASL_LEVEL_NOTICE, "NAT-D payload #%d %s\n",
natd->seq - 1,
natd_verified ? "verified" : "doesn't match");
vfree (natd->payload);
TAILQ_REMOVE(&natd_tree, natd, chain);
racoon_free (natd);
}
plog (ASL_LEVEL_NOTICE, "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);
ike_session_update_natt_version(iph1);
}
#endif
#ifdef HAVE_OPENSSL
if (oakley_dh_compute(iph1->rmconf->dhgrp, iph1->dhpub,
iph1->dhpriv, iph1->dhpub_p, &iph1->dhgxy) < 0) {
#else
if (oakley_dh_compute(iph1->rmconf->dhgrp, iph1->dhpub_p, iph1->publicKeySize, &iph1->dhgxy, &iph1->dhC) < 0) {
#endif
plog(ASL_LEVEL_ERR,
"failed to compute DH");
goto end;
}
if (oakley_skeyid(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to generate SKEYID");
goto end;
}
if (oakley_skeyid_dae(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to generate SKEYID-DAE");
goto end;
}
if (oakley_compute_enckey(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to generate ENCKEY");
goto end;
}
if (oakley_newiv(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to generate IV");
goto end;
}
ptype = oakley_validate_auth(iph1);
if (ptype != 0) {
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKEV1_PH1_AUTH_FAIL,
CONSTSTR("Initiator, Aggressive-Mode Message 2"),
CONSTSTR("Failed to authenticate, Aggressive-Mode Message 2"));
if (ptype == -1) {
goto end;
}
isakmp_info_send_n1(iph1, ptype, NULL);
goto end;
}
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKEV1_PH1_AUTH_SUCC,
CONSTSTR("Initiator, Aggressive-Mode Message 2"),
CONSTSTR(NULL));
if (oakley_checkcr(iph1) < 0) {
;
}
fsm_set_state(&iph1->status, IKEV1_STATE_AGG_I_MSG2RCVD);
#ifdef ENABLE_VPNCONTROL_PORT
vpncontrol_notify_phase_change(1, FROM_REMOTE, iph1, NULL);
#endif
error = 0;
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_RX_SUCC,
CONSTSTR("Initiator, Aggressive-Mode message 2"),
CONSTSTR(NULL));
end:
if (error) {
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_RX_FAIL,
CONSTSTR("Initiator, Aggressive-Mode Message 2"),
CONSTSTR("Failure processing Aggressive-Mode Message 2"));
}
if (pbuf)
vfree(pbuf);
if (satmp)
vfree(satmp);
if (error) {
VPTRINIT(iph1->dhpub_p);
VPTRINIT(iph1->nonce_p);
VPTRINIT(iph1->id_p);
oakley_delcert(iph1->cert_p);
iph1->cert_p = NULL;
oakley_delcert(iph1->crl_p);
iph1->crl_p = NULL;
VPTRINIT(iph1->sig_p);
oakley_delcert(iph1->cr_p);
iph1->cr_p = NULL;
}
return error;
}
int
agg_i3send(iph1, msg)
phase1_handle_t *iph1;
vchar_t *msg;
{
struct payload_list *plist = NULL;
int need_cert = 0;
int error = -1;
vchar_t *gsshash = NULL;
#ifdef ENABLE_NATT
vchar_t *natd[2] = { NULL, NULL };
#endif
vchar_t *notp_unity = NULL;
vchar_t *notp_ini = NULL;
if (iph1->status != IKEV1_STATE_AGG_I_MSG2RCVD) {
plog(ASL_LEVEL_ERR,
"status mismatched %d.\n", iph1->status);
goto end;
}
plog(ASL_LEVEL_DEBUG, "generate HASH_I\n");
iph1->hash = oakley_ph1hash_common(iph1, GENERATE);
if (iph1->hash == NULL) {
plog(ASL_LEVEL_ERR,
"failed to generate HASH");
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:
#endif
plist = isakmp_plist_append(plist,
iph1->hash, ISAKMP_NPTYPE_HASH);
break;
case OAKLEY_ATTR_AUTH_METHOD_RSASIG:
#ifdef ENABLE_HYBRID
case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_I:
#endif
if (oakley_getmycert(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to get mycert");
goto end;
}
if (oakley_getsign(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to get sign");
goto end;
}
if (iph1->cert != NULL && iph1->rmconf->send_cert)
need_cert = 1;
if (need_cert)
plist = isakmp_plist_append(plist, iph1->cert->pl, ISAKMP_NPTYPE_CERT);
plist = isakmp_plist_append(plist, iph1->sig, ISAKMP_NPTYPE_SIG);
break;
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
if (NATT_AVAILABLE(iph1)) {
plog (ASL_LEVEL_NOTICE, "Adding remote and local NAT-D payloads.\n");
if ((natd[0] = natt_hash_addr (iph1, iph1->remote)) == NULL) {
plog(ASL_LEVEL_ERR,
"NAT-D hashing failed for %s\n", saddr2str((struct sockaddr *)iph1->remote));
goto end;
}
if ((natd[1] = natt_hash_addr (iph1, iph1->local)) == NULL) {
plog(ASL_LEVEL_ERR,
"NAT-D hashing failed for %s\n", saddr2str((struct sockaddr *)iph1->local));
goto end;
}
if (iph1->natt_options->version == VENDORID_NATT_APPLE) {
plist = isakmp_plist_append(plist, natd[1], iph1->natt_options->payload_nat_d);
plist = isakmp_plist_append(plist, natd[0], iph1->natt_options->payload_nat_d);
} else
{
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
if (isakmp_send(iph1, iph1->sendbuf) < 0) {
plog(ASL_LEVEL_ERR,
"failed to send packet");
goto end;
}
if (ike_session_add_recvdpkt(iph1->remote, iph1->local, iph1->sendbuf, msg,
PH1_NON_ESP_EXTRA_LEN(iph1, iph1->sendbuf), PH1_FRAG_FLAGS(iph1)) == -1) {
plog(ASL_LEVEL_ERR ,
"failed to add a response packet to the tree.\n");
goto end;
}
iph1->flags |= ISAKMP_FLAG_E;
fsm_set_state(&iph1->status, IKEV1_STATE_PHASE1_ESTABLISHED);
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKEV1_PH1_INIT_SUCC,
CONSTSTR("Initiator, Aggressive-Mode"),
CONSTSTR(NULL));
error = 0;
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_TX_SUCC,
CONSTSTR("Initiator, Aggressive-Mode message 3"),
CONSTSTR(NULL));
end:
if (error) {
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_TX_FAIL,
CONSTSTR("Initiator, Aggressive-Mode Message 3"),
CONSTSTR("Failed to transmit Aggressive-Mode Message 3"));
}
#ifdef ENABLE_NATT
if (natd[0])
vfree(natd[0]);
if (natd[1])
vfree(natd[1]);
#endif
if (notp_unity)
vfree(notp_unity);
if (notp_ini)
vfree(notp_ini);
if (gsshash)
vfree(gsshash);
return error;
}
int
agg_r1recv(iph1, msg)
phase1_handle_t *iph1;
vchar_t *msg;
{
int error = -1;
vchar_t *pbuf = NULL;
struct isakmp_parse_t *pa;
int vid_numeric;
if (iph1->status != IKEV1_STATE_AGG_R_START) {
plog(ASL_LEVEL_ERR,
"status mismatched %d.\n", iph1->status);
goto end;
}
pbuf = isakmp_parse(msg);
if (pbuf == NULL) {
plog(ASL_LEVEL_ERR,
"failed to parse msg");
goto end;
}
pa = ALIGNED_CAST(struct isakmp_parse_t *)pbuf->v;
if (pa->type != ISAKMP_NPTYPE_SA) {
plog(ASL_LEVEL_ERR,
"received invalid next payload type %d, "
"expecting %d.\n",
pa->type, ISAKMP_NPTYPE_SA);
goto end;
}
if (isakmp_p2ph(&iph1->sa, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process SA payload");
goto end;
}
pa++;
for (;
pa->type != ISAKMP_NPTYPE_NONE;
pa++) {
plog(ASL_LEVEL_DEBUG,
"received payload of type %s\n",
s_isakmp_nptype(pa->type));
switch (pa->type) {
case ISAKMP_NPTYPE_KE:
if (isakmp_p2ph(&iph1->dhpub_p, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process KE payload");
goto end;
}
break;
case ISAKMP_NPTYPE_NONCE:
if (isakmp_p2ph(&iph1->nonce_p, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process NONCE payload");
goto end;
}
break;
case ISAKMP_NPTYPE_ID:
if (isakmp_p2ph(&iph1->id_p, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process ID payload");
goto end;
}
break;
case ISAKMP_NPTYPE_VID:
vid_numeric = check_vendorid(pa->ptr);
#ifdef ENABLE_NATT
if (iph1->rmconf->nat_traversal &&
natt_vendorid(vid_numeric)) {
natt_handle_vendorid(iph1, vid_numeric);
break;
}
#endif
#ifdef ENABLE_HYBRID
switch (vid_numeric) {
case VENDORID_XAUTH:
iph1->mode_cfg->flags |=
ISAKMP_CFG_VENDORID_XAUTH;
break;
case VENDORID_UNITY:
iph1->mode_cfg->flags |=
ISAKMP_CFG_VENDORID_UNITY;
break;
default:
break;
}
#endif
#ifdef ENABLE_DPD
if (vid_numeric == VENDORID_DPD && iph1->rmconf->dpd) {
iph1->dpd_support=1;
plog(ASL_LEVEL_DEBUG,
"remote supports DPD\n");
}
#endif
#ifdef ENABLE_FRAG
if ((vid_numeric == VENDORID_FRAG) &&
(vendorid_frag_cap(pa->ptr) & VENDORID_FRAG_AGG)) {
plog(ASL_LEVEL_DEBUG,
"remote supports FRAGMENTATION\n");
iph1->frag = 1;
}
#endif
break;
case ISAKMP_NPTYPE_CR:
if (oakley_savecr(iph1, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process CR payload");
goto end;
}
break;
default:
plog(ASL_LEVEL_ERR,
"ignore the packet, "
"received unexpecting payload type %d.\n",
pa->type);
goto end;
}
}
if (iph1->dhpub_p == NULL || iph1->nonce_p == NULL) {
plog(ASL_LEVEL_ERR,
"few isakmp message received.\n");
goto end;
}
if (ipsecdoi_checkid1(iph1) != 0) {
plog(ASL_LEVEL_ERR,
"invalid ID payload.\n");
goto end;
}
#ifdef ENABLE_NATT
if (NATT_AVAILABLE(iph1)) {
plog(ASL_LEVEL_NOTICE,
"Selected NAT-T version: %s\n",
vid_string_by_id(iph1->natt_options->version));
ike_session_update_natt_version(iph1);
}
#endif
if (ipsecdoi_checkph1proposal(iph1->sa, iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to get valid proposal.\n");
goto end;
}
if (oakley_checkcr(iph1) < 0) {
;
}
fsm_set_state(&iph1->status, IKEV1_STATE_AGG_R_MSG1RCVD);
error = 0;
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_RX_SUCC,
CONSTSTR("Responder, Aggressive-Mode message 1"),
CONSTSTR(NULL));
end:
if (error) {
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_RX_FAIL,
CONSTSTR("Responder, Aggressive-Mode Message 1"),
CONSTSTR("Failed to process Aggressive-Mode Message 1"));
}
if (pbuf)
vfree(pbuf);
if (error) {
VPTRINIT(iph1->sa);
VPTRINIT(iph1->dhpub_p);
VPTRINIT(iph1->nonce_p);
VPTRINIT(iph1->id_p);
oakley_delcert(iph1->cr_p);
iph1->cr_p = NULL;
}
return error;
}
int
agg_r2send(iph1, msg)
phase1_handle_t *iph1;
vchar_t *msg;
{
struct payload_list *plist = NULL;
int need_cr = 0;
int need_cert = 0;
vchar_t *cr = NULL;
int error = -1;
#ifdef ENABLE_HYBRID
vchar_t *xauth_vid = NULL;
vchar_t *unity_vid = NULL;
#endif
#ifdef ENABLE_NATT
vchar_t *vid_natt = NULL;
vchar_t *natd[2] = { NULL, NULL };
#endif
#ifdef ENABLE_DPD
vchar_t *vid_dpd = NULL;
#endif
#ifdef ENABLE_FRAG
vchar_t *vid_frag = NULL;
#endif
if (iph1->status != IKEV1_STATE_AGG_R_MSG1RCVD) {
plog(ASL_LEVEL_ERR,
"status mismatched %d.\n", iph1->status);
goto end;
}
isakmp_newcookie((caddr_t)&iph1->index.r_ck, iph1->remote, iph1->local);
if (ipsecdoi_setid1(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to set ID");
goto end;
}
#ifdef HAVE_OPENSSL
if (oakley_dh_generate(iph1->rmconf->dhgrp,
&iph1->dhpub, &iph1->dhpriv) < 0) {
#else
if (oakley_dh_generate(iph1->rmconf->dhgrp,
&iph1->dhpub, &iph1->publicKeySize, &iph1->dhC) < 0) {
#endif
plog(ASL_LEVEL_ERR,
"failed to generate DH");
goto end;
}
iph1->nonce = eay_set_random(iph1->rmconf->nonce_size);
if (iph1->nonce == NULL) {
plog(ASL_LEVEL_ERR,
"failed to generate NONCE");
goto end;
}
#ifdef HAVE_OPENSSL
if (oakley_dh_compute(iph1->approval->dhgrp, iph1->dhpub,
iph1->dhpriv, iph1->dhpub_p, &iph1->dhgxy) < 0) {
#else
if (oakley_dh_compute(iph1->approval->dhgrp, iph1->dhpub_p, iph1->publicKeySize, &iph1->dhgxy, &iph1->dhC) < 0) {
#endif
plog(ASL_LEVEL_ERR,
"failed to compute DH");
goto end;
}
if (oakley_skeyid(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to generate SKEYID");
goto end;
}
if (oakley_skeyid_dae(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to generate SKEYID-DAE");
goto end;
}
if (oakley_compute_enckey(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to generate ENCKEY");
goto end;
}
if (oakley_newiv(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to generate IV");
goto end;
}
plog(ASL_LEVEL_DEBUG, "generate HASH_R\n");
iph1->hash = oakley_ph1hash_common(iph1, GENERATE);
if (iph1->hash == NULL) {
plog(ASL_LEVEL_ERR,
"failed to generate GSS HASH");
goto end;
}
if (iph1->rmconf->send_cr
&& oakley_needcr(iph1->approval->authmethod)) {
need_cr = 1;
cr = oakley_getcr(iph1);
if (cr == NULL) {
plog(ASL_LEVEL_ERR,
"failed to get CR.\n");
goto end;
}
}
#ifdef ENABLE_NATT
if (NATT_AVAILABLE(iph1)) {
vid_natt = set_vendorid(iph1->natt_options->version);
plog (ASL_LEVEL_NOTICE, "Adding remote and local NAT-D payloads.\n");
if ((natd[0] = natt_hash_addr (iph1, iph1->remote)) == NULL) {
plog(ASL_LEVEL_ERR,
"NAT-D hashing failed for %s\n", saddr2str((struct sockaddr *)iph1->remote));
goto end;
}
if ((natd[1] = natt_hash_addr (iph1, iph1->local)) == NULL) {
plog(ASL_LEVEL_ERR,
"NAT-D hashing failed for %s\n", saddr2str((struct sockaddr *)iph1->local));
goto end;
}
}
#endif
#ifdef ENABLE_DPD
if (iph1->dpd_support && iph1->rmconf->dpd)
vid_dpd = set_vendorid(VENDORID_DPD);
#endif
#ifdef ENABLE_FRAG
if (iph1->frag) {
vid_frag = set_vendorid(VENDORID_FRAG);
if (vid_frag != NULL)
vid_frag = isakmp_frag_addcap(vid_frag,
VENDORID_FRAG_AGG);
if (vid_frag == NULL)
plog(ASL_LEVEL_ERR,
"Frag vendorID construction failed\n");
}
#endif
switch (AUTHMETHOD(iph1)) {
case OAKLEY_ATTR_AUTH_METHOD_PSKEY:
#ifdef ENABLE_HYBRID
case OAKLEY_ATTR_AUTH_METHOD_XAUTH_PSKEY_R:
#endif
plist = isakmp_plist_append(plist, iph1->sa_ret, ISAKMP_NPTYPE_SA);
plist = isakmp_plist_append(plist, iph1->dhpub, ISAKMP_NPTYPE_KE);
plist = isakmp_plist_append(plist, iph1->nonce, ISAKMP_NPTYPE_NONCE);
plist = isakmp_plist_append(plist, iph1->id, ISAKMP_NPTYPE_ID);
plist = isakmp_plist_append(plist,
iph1->hash, ISAKMP_NPTYPE_HASH);
if (need_cr)
plist = isakmp_plist_append(plist, cr, ISAKMP_NPTYPE_CR);
break;
case OAKLEY_ATTR_AUTH_METHOD_RSASIG:
#ifdef ENABLE_HYBRID
case OAKLEY_ATTR_AUTH_METHOD_HYBRID_RSA_R:
case OAKLEY_ATTR_AUTH_METHOD_XAUTH_RSASIG_R:
#endif
if (oakley_getmycert(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to get mycert");
goto end;
}
if (oakley_getsign(iph1) < 0) {
plog(ASL_LEVEL_ERR,
"failed to get sign");
goto end;
}
if (iph1->cert != NULL && iph1->rmconf->send_cert)
need_cert = 1;
plist = isakmp_plist_append(plist, iph1->sa_ret, ISAKMP_NPTYPE_SA);
plist = isakmp_plist_append(plist, iph1->dhpub, ISAKMP_NPTYPE_KE);
plist = isakmp_plist_append(plist, iph1->nonce, ISAKMP_NPTYPE_NONCE);
plist = isakmp_plist_append(plist, iph1->id, ISAKMP_NPTYPE_ID);
if (need_cert)
plist = isakmp_plist_append(plist, iph1->cert->pl, ISAKMP_NPTYPE_CERT);
plist = isakmp_plist_append(plist, iph1->sig, ISAKMP_NPTYPE_SIG);
if (need_cr)
plist = isakmp_plist_append(plist,
cr, ISAKMP_NPTYPE_CR);
break;
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_HYBRID
if (iph1->mode_cfg->flags & ISAKMP_CFG_VENDORID_XAUTH) {
plog (ASL_LEVEL_NOTICE, "Adding xauth VID payload.\n");
if ((xauth_vid = set_vendorid(VENDORID_XAUTH)) == NULL) {
plog(ASL_LEVEL_ERR,
"Cannot create Xauth vendor ID\n");
goto end;
}
plist = isakmp_plist_append(plist,
xauth_vid, ISAKMP_NPTYPE_VID);
}
if (iph1->mode_cfg->flags & ISAKMP_CFG_VENDORID_UNITY) {
if ((unity_vid = set_vendorid(VENDORID_UNITY)) == NULL) {
plog(ASL_LEVEL_ERR,
"Cannot create Unity vendor ID\n");
goto end;
}
plist = isakmp_plist_append(plist,
unity_vid, ISAKMP_NPTYPE_VID);
}
#endif
#ifdef ENABLE_NATT
if (vid_natt) {
plist = isakmp_plist_append(plist, vid_natt, ISAKMP_NPTYPE_VID);
if (iph1->natt_options->version == VENDORID_NATT_APPLE) {
plist = isakmp_plist_append(plist, natd[1], iph1->natt_options->payload_nat_d);
plist = isakmp_plist_append(plist, natd[0], iph1->natt_options->payload_nat_d);
} else
{
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
#ifdef ENABLE_FRAG
if (vid_frag)
plist = isakmp_plist_append(plist, vid_frag, ISAKMP_NPTYPE_VID);
#endif
#ifdef ENABLE_DPD
if (vid_dpd)
plist = isakmp_plist_append(plist, vid_dpd, 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, 1);
#endif
iph1->retry_counter = iph1->rmconf->retry_counter;
if (isakmp_ph1resend(iph1) == -1) {
plog(ASL_LEVEL_ERR ,
"failed to send packet");
goto end;
}
if (ike_session_add_recvdpkt(iph1->remote, iph1->local, iph1->sendbuf, msg,
PH1_NON_ESP_EXTRA_LEN(iph1, iph1->sendbuf), PH1_FRAG_FLAGS(iph1)) == -1) {
plog(ASL_LEVEL_ERR ,
"failed to add a response packet to the tree.\n");
goto end;
}
fsm_set_state(&iph1->status, IKEV1_STATE_AGG_R_MSG2SENT);
#ifdef ENABLE_VPNCONTROL_PORT
vpncontrol_notify_phase_change(1, FROM_LOCAL, iph1, NULL);
#endif
error = 0;
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_TX_SUCC,
CONSTSTR("Responder, Aggressive-Mode message 2"),
CONSTSTR(NULL));
end:
if (error) {
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_TX_FAIL,
CONSTSTR("Responder, Aggressive-Mode Message 2"),
CONSTSTR("Failed to process Aggressive-Mode Message 2"));
}
if (cr)
vfree(cr);
#ifdef ENABLE_HYBRID
if (xauth_vid)
vfree(xauth_vid);
if (unity_vid)
vfree(unity_vid);
#endif
#ifdef ENABLE_NATT
if (vid_natt)
vfree(vid_natt);
if (natd[0])
vfree(natd[0]);
if (natd[1])
vfree(natd[1]);
#endif
#ifdef ENABLE_DPD
if (vid_dpd)
vfree(vid_dpd);
#endif
#ifdef ENABLE_FRAG
if (vid_frag)
vfree(vid_frag);
#endif
return error;
}
int
agg_r3recv(iph1, msg0)
phase1_handle_t *iph1;
vchar_t *msg0;
{
vchar_t *msg = NULL;
vchar_t *pbuf = NULL;
struct isakmp_parse_t *pa;
int error = -1;
int ptype;
#ifdef ENABLE_NATT
int natd_seq = 0;
#endif
int received_cert = 0;
if (iph1->status != IKEV1_STATE_AGG_R_MSG2SENT) {
plog(ASL_LEVEL_ERR,
"status mismatched %d.\n", iph1->status);
goto end;
}
if (ISSET(((struct isakmp *)msg0->v)->flags, ISAKMP_FLAG_E)) {
msg = oakley_do_decrypt(iph1, msg0,
iph1->ivm->iv, iph1->ivm->ive);
if (msg == NULL) {
plog(ASL_LEVEL_ERR,
"failed to decrypt msg");
goto end;
}
} else
msg = vdup(msg0);
pbuf = isakmp_parse(msg);
if (pbuf == NULL) {
plog(ASL_LEVEL_ERR,
"failed to parse msg");
goto end;
}
iph1->pl_hash = NULL;
for (pa = ALIGNED_CAST(struct isakmp_parse_t *)pbuf->v;
pa->type != ISAKMP_NPTYPE_NONE;
pa++) {
switch (pa->type) {
case ISAKMP_NPTYPE_HASH:
iph1->pl_hash = (struct isakmp_pl_hash *)pa->ptr;
break;
case ISAKMP_NPTYPE_VID:
(void)check_vendorid(pa->ptr);
break;
case ISAKMP_NPTYPE_CERT:
if (oakley_savecert(iph1, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process CERT payload");
goto end;
}
received_cert = 1;
break;
case ISAKMP_NPTYPE_SIG:
if (isakmp_p2ph(&iph1->sig_p, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process SIG payload");
goto end;
}
break;
case ISAKMP_NPTYPE_N:
isakmp_check_notify(pa->ptr, iph1);
break;
#ifdef ENABLE_NATT
case ISAKMP_NPTYPE_NATD_DRAFT:
case ISAKMP_NPTYPE_NATD_RFC:
if (NATT_AVAILABLE(iph1) && iph1->natt_options != NULL &&
pa->type == iph1->natt_options->payload_nat_d)
{
vchar_t *natd_received = NULL;
int natd_verified;
if (isakmp_p2ph (&natd_received, pa->ptr) < 0) {
plog(ASL_LEVEL_ERR,
"failed to process NATD payload");
goto end;
}
if (natd_seq == 0)
iph1->natt_flags |= NAT_DETECTED;
natd_verified = natt_compare_addr_hash (iph1,
natd_received, natd_seq++);
plog (ASL_LEVEL_NOTICE, "NAT-D payload #%d %s\n",
natd_seq - 1,
natd_verified ? "verified" : "doesn't match");
vfree (natd_received);
break;
}
break;
#endif
default:
plog(ASL_LEVEL_ERR,
"ignore the packet, "
"received unexpecting payload type %d.\n",
pa->type);
goto end;
}
}
#ifdef ENABLE_NATT
if (NATT_AVAILABLE(iph1))
plog (ASL_LEVEL_NOTICE, "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
if (received_cert) {
oakley_verify_certid(iph1);
}
ptype = oakley_validate_auth(iph1);
if (ptype != 0) {
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKEV1_PH1_AUTH_FAIL,
CONSTSTR("Responder, Aggressive-Mode Message 3"),
CONSTSTR("Failed to authenticate Aggressive-Mode Message 3"));
if (ptype == -1) {
goto end;
}
isakmp_info_send_n1(iph1, ptype, NULL);
goto end;
}
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKEV1_PH1_AUTH_SUCC,
CONSTSTR("Responder, Aggressive-Mode Message 3"),
CONSTSTR(NULL));
fsm_set_state(&iph1->status, IKEV1_STATE_AGG_R_MSG3RCVD);
error = 0;
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_RX_SUCC,
CONSTSTR("Responder, Aggressive-Mode message 3"),
CONSTSTR(NULL));
end:
if (error) {
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKE_PACKET_RX_FAIL,
CONSTSTR("Responder, Aggressive-Mode Message 3"),
CONSTSTR("Failed to process Aggressive-Mode Message 3"));
}
if (pbuf)
vfree(pbuf);
if (msg)
vfree(msg);
if (error) {
oakley_delcert(iph1->cert_p);
iph1->cert_p = NULL;
oakley_delcert(iph1->crl_p);
iph1->crl_p = NULL;
VPTRINIT(iph1->sig_p);
}
return error;
}
int
agg_rfinalize(iph1, msg)
phase1_handle_t *iph1;
vchar_t *msg;
{
int error = -1;
if (iph1->status != IKEV1_STATE_AGG_R_MSG3RCVD) {
plog(ASL_LEVEL_ERR,
"status mismatched %d.\n", iph1->status);
goto end;
}
if (ISSET(((struct isakmp *)msg->v)->flags, ISAKMP_FLAG_E))
memcpy(iph1->ivm->iv->v, iph1->ivm->ive->v, iph1->ivm->iv->l);
iph1->flags |= ISAKMP_FLAG_E;
fsm_set_state(&iph1->status, IKEV1_STATE_PHASE1_ESTABLISHED);
IPSECSESSIONTRACEREVENT(iph1->parent_session,
IPSECSESSIONEVENTCODE_IKEV1_PH1_RESP_SUCC,
CONSTSTR("Responder, Aggressive-Mode"),
CONSTSTR(NULL));
error = 0;
end:
return error;
}