/* $OpenBSD: ike_main_mode.c,v 1.16 2005/04/08 22:32:10 cloder Exp $ */ /* $EOM: ike_main_mode.c,v 1.77 1999/04/25 22:12:34 niklas Exp $ */ /* * Copyright (c) 1998, 1999 Niklas Hallqvist. 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. * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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. */ /* * This code was written under funding by Ericsson Radio Systems. */ #include <sys/types.h> #include <netinet/in.h> #include <stdlib.h> #include <string.h> #include "attribute.h" #include "conf.h" #include "constants.h" #include "crypto.h" #include "dh.h" #include "doi.h" #include "exchange.h" #include "hash.h" #include "ike_auth.h" #include "ike_main_mode.h" #include "ike_phase_1.h" #include "ipsec.h" #include "ipsec_doi.h" #include "isakmp.h" #include "log.h" #include "math_group.h" #include "message.h" #include "prf.h" #include "sa.h" #include "transport.h" #include "util.h" static int initiator_send_ID_AUTH(struct message *); static int responder_send_ID_AUTH(struct message *); static int responder_send_KE_NONCE(struct message *); int (*ike_main_mode_initiator[]) (struct message *) = { ike_phase_1_initiator_send_SA, ike_phase_1_initiator_recv_SA, ike_phase_1_initiator_send_KE_NONCE, ike_phase_1_initiator_recv_KE_NONCE, initiator_send_ID_AUTH, ike_phase_1_recv_ID_AUTH }; int (*ike_main_mode_responder[]) (struct message *) = { ike_phase_1_responder_recv_SA, ike_phase_1_responder_send_SA, ike_phase_1_recv_KE_NONCE, responder_send_KE_NONCE, ike_phase_1_recv_ID_AUTH, responder_send_ID_AUTH }; static int initiator_send_ID_AUTH(struct message *msg) { msg->exchange->flags |= EXCHANGE_FLAG_ENCRYPT; if (ike_phase_1_send_ID(msg)) return -1; if (ike_phase_1_send_AUTH(msg)) return -1; return ipsec_initial_contact(msg); } /* Send our public DH value and a nonce to the initiator. */ int responder_send_KE_NONCE(struct message *msg) { /* XXX Should we really just use the initiator's nonce size? */ if (ike_phase_1_send_KE_NONCE(msg, msg->exchange->nonce_i_len)) return -1; /* * Calculate DH values & key material in parallel with the message * going on a roundtrip over the wire. */ message_register_post_send(msg, (void (*)(struct message *))ike_phase_1_post_exchange_KE_NONCE); return 0; } static int responder_send_ID_AUTH(struct message *msg) { msg->exchange->flags |= EXCHANGE_FLAG_ENCRYPT; if (ike_phase_1_responder_send_ID_AUTH(msg)) return -1; return ipsec_initial_contact(msg); }