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/* $OpenBSD: ike_main_mode.c,v 1.17 2010/06/29 19:50:16 reyk Exp $ */ |
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/* $EOM: ike_main_mode.c,v 1.77 1999/04/25 22:12:34 niklas Exp $ */ |
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/* |
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* Copyright (c) 1998, 1999 Niklas Hallqvist. All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR |
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES |
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. |
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, |
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, |
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY |
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF |
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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*/ |
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/* |
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* This code was written under funding by Ericsson Radio Systems. |
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*/ |
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#include <sys/types.h> |
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#include <netinet/in.h> |
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#include <stdlib.h> |
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#include <string.h> |
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#include "attribute.h" |
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#include "conf.h" |
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#include "constants.h" |
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#include "crypto.h" |
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#include "dh.h" |
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#include "doi.h" |
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#include "exchange.h" |
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#include "hash.h" |
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#include "ike_auth.h" |
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#include "ike_main_mode.h" |
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#include "ike_phase_1.h" |
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#include "ipsec.h" |
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#include "ipsec_doi.h" |
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#include "isakmp.h" |
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#include "log.h" |
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#include "message.h" |
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#include "prf.h" |
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#include "sa.h" |
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#include "transport.h" |
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#include "util.h" |
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static int initiator_send_ID_AUTH(struct message *); |
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static int responder_send_ID_AUTH(struct message *); |
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static int responder_send_KE_NONCE(struct message *); |
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int (*ike_main_mode_initiator[]) (struct message *) = { |
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ike_phase_1_initiator_send_SA, |
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ike_phase_1_initiator_recv_SA, |
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ike_phase_1_initiator_send_KE_NONCE, |
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ike_phase_1_initiator_recv_KE_NONCE, |
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initiator_send_ID_AUTH, |
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ike_phase_1_recv_ID_AUTH |
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}; |
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int (*ike_main_mode_responder[]) (struct message *) = { |
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ike_phase_1_responder_recv_SA, |
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ike_phase_1_responder_send_SA, |
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ike_phase_1_recv_KE_NONCE, |
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responder_send_KE_NONCE, |
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ike_phase_1_recv_ID_AUTH, |
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responder_send_ID_AUTH |
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}; |
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static int |
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initiator_send_ID_AUTH(struct message *msg) |
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{ |
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msg->exchange->flags |= EXCHANGE_FLAG_ENCRYPT; |
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if (ike_phase_1_send_ID(msg)) |
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return -1; |
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if (ike_phase_1_send_AUTH(msg)) |
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return -1; |
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return ipsec_initial_contact(msg); |
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} |
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/* Send our public DH value and a nonce to the initiator. */ |
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int |
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responder_send_KE_NONCE(struct message *msg) |
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{ |
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/* XXX Should we really just use the initiator's nonce size? */ |
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if (ike_phase_1_send_KE_NONCE(msg, msg->exchange->nonce_i_len)) |
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return -1; |
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/* |
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* Calculate DH values & key material in parallel with the message |
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* going on a roundtrip over the wire. |
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*/ |
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message_register_post_send(msg, |
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(void (*)(struct message *))ike_phase_1_post_exchange_KE_NONCE); |
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return 0; |
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} |
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static int |
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responder_send_ID_AUTH(struct message *msg) |
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{ |
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msg->exchange->flags |= EXCHANGE_FLAG_ENCRYPT; |
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if (ike_phase_1_responder_send_ID_AUTH(msg)) |
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return -1; |
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return ipsec_initial_contact(msg); |
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} |