2005-11-08 13:33:28 +00:00
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/**
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* @file ike_sa.c
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2005-11-09 09:11:06 +00:00
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*
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2005-11-29 08:08:03 +00:00
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* @brief Implementation of ike_sa_t.
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2005-11-09 09:11:06 +00:00
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*
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2005-11-08 13:33:28 +00:00
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*/
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/*
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2006-06-22 06:36:28 +00:00
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* Copyright (C) 2006 Tobias Brunner, Daniel Roethlisberger
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2005-11-08 13:33:28 +00:00
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* Copyright (C) 2005 Jan Hutter, Martin Willi
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* Hochschule fuer Technik Rapperswil
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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2006-06-22 06:36:28 +00:00
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#include <sys/time.h>
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2006-04-10 08:07:38 +00:00
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#include <string.h>
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2005-11-08 13:33:28 +00:00
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2005-11-11 13:52:11 +00:00
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#include "ike_sa.h"
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2005-11-23 09:24:35 +00:00
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#include <types.h>
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2005-11-29 10:25:07 +00:00
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#include <daemon.h>
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2005-11-23 09:24:35 +00:00
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#include <definitions.h>
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#include <utils/linked_list.h>
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#include <utils/logger_manager.h>
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2006-04-05 12:10:50 +00:00
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#include <crypto/diffie_hellman.h>
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#include <crypto/prf_plus.h>
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#include <crypto/crypters/crypter.h>
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2006-06-22 06:36:28 +00:00
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#include <crypto/hashers/hasher.h>
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2005-11-23 09:57:18 +00:00
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#include <encoding/payloads/sa_payload.h>
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#include <encoding/payloads/nonce_payload.h>
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#include <encoding/payloads/ke_payload.h>
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2005-12-12 14:14:52 +00:00
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#include <encoding/payloads/delete_payload.h>
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2005-11-23 09:57:18 +00:00
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#include <encoding/payloads/transform_substructure.h>
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#include <encoding/payloads/transform_attribute.h>
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2006-06-07 13:26:23 +00:00
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#include <encoding/payloads/ts_payload.h>
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2006-07-05 10:53:20 +00:00
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#include <sa/transactions/transaction.h>
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#include <sa/transactions/ike_sa_init.h>
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#include <sa/transactions/delete_ike_sa.h>
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2006-07-07 07:04:07 +00:00
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#include <sa/transactions/create_child_sa.h>
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#include <sa/transactions/delete_child_sa.h>
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2006-07-05 10:53:20 +00:00
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#include <sa/transactions/dead_peer_detection.h>
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2005-12-02 14:07:36 +00:00
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#include <queues/jobs/retransmit_request_job.h>
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2005-12-06 12:27:09 +00:00
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#include <queues/jobs/delete_established_ike_sa_job.h>
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2006-05-23 08:01:49 +00:00
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#include <queues/jobs/delete_half_open_ike_sa_job.h>
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2006-07-05 10:53:20 +00:00
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#include <queues/jobs/send_dpd_job.h>
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#include <queues/jobs/send_keepalive_job.h>
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2005-11-08 13:33:28 +00:00
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2006-07-05 10:53:20 +00:00
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/**
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* String mappings for ike_sa_state_t.
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*/
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mapping_t ike_sa_state_m[] = {
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{SA_CREATED, "CREATED"},
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{SA_CONNECTING, "CONNECTING"},
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{SA_ESTABLISHED, "ESTABLISHED"},
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{SA_DELETING, "DELETING"},
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{MAPPING_END, NULL}
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};
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2005-11-18 10:31:56 +00:00
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2005-11-08 13:33:28 +00:00
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2005-11-25 13:42:02 +00:00
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typedef struct private_ike_sa_t private_ike_sa_t;
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/**
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* Private data of an ike_sa_t object.
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*/
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struct private_ike_sa_t {
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/**
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2006-07-05 10:53:20 +00:00
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* Public members
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2006-06-23 14:02:30 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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ike_sa_t public;
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2006-06-23 14:02:30 +00:00
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2005-11-25 13:42:02 +00:00
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/**
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2005-12-03 16:52:54 +00:00
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* Identifier for the current IKE_SA.
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2005-11-25 13:42:02 +00:00
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*/
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ike_sa_id_t *ike_sa_id;
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2006-06-07 13:26:23 +00:00
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2005-11-25 13:42:02 +00:00
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/**
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2005-12-03 16:52:54 +00:00
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* Linked List containing the child sa's of the current IKE_SA.
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2005-11-25 13:42:02 +00:00
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*/
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linked_list_t *child_sas;
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2005-12-01 17:16:10 +00:00
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/**
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2006-07-05 10:53:20 +00:00
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* Current state of the IKE_SA
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2005-12-01 17:16:10 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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ike_sa_state_t state;
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2005-12-01 17:16:10 +00:00
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/**
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2006-06-07 13:26:23 +00:00
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* Connection definition used for this IKE_SA
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2005-12-01 17:16:10 +00:00
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*/
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2006-03-16 15:25:06 +00:00
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connection_t *connection;
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2005-12-03 16:52:54 +00:00
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2005-11-25 13:42:02 +00:00
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/**
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2006-06-07 13:26:23 +00:00
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* Policy definition used for this IKE_SA
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2005-11-25 13:42:02 +00:00
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*/
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2006-03-16 15:25:06 +00:00
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policy_t *policy;
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2005-11-25 13:42:02 +00:00
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/**
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2006-07-05 10:53:20 +00:00
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* crypter for inbound traffic
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2005-11-25 13:42:02 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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crypter_t *crypter_in;
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2005-11-25 13:42:02 +00:00
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/**
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2006-07-05 10:53:20 +00:00
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* crypter for outbound traffic
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2005-11-25 13:42:02 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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crypter_t *crypter_out;
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2005-11-25 13:42:02 +00:00
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/**
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2006-07-05 10:53:20 +00:00
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* Signer for inbound traffic
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2005-11-25 13:42:02 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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signer_t *signer_in;
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2005-11-25 13:42:02 +00:00
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/**
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2006-07-05 10:53:20 +00:00
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* Signer for outbound traffic
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2005-11-25 13:42:02 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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signer_t *signer_out;
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2005-11-25 13:42:02 +00:00
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/**
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2006-02-14 14:52:00 +00:00
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* Multi purpose prf, set key, use it, forget it
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2005-11-25 13:42:02 +00:00
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*/
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prf_t *prf;
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2006-02-09 16:25:02 +00:00
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/**
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* Prf function for derivating keymat child SAs
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*/
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prf_t *child_prf;
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2005-11-25 13:42:02 +00:00
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/**
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2006-02-14 14:52:00 +00:00
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* PRF, with key set to pi_key, used for authentication
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2005-11-25 13:42:02 +00:00
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*/
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2006-02-14 14:52:00 +00:00
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prf_t *prf_auth_i;
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2005-11-25 13:42:02 +00:00
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2006-02-14 14:52:00 +00:00
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/**
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* PRF, with key set to pr_key, used for authentication
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*/
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prf_t *prf_auth_r;
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2005-12-02 14:07:36 +00:00
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2005-11-25 13:42:02 +00:00
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/**
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2005-12-03 16:52:54 +00:00
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* A logger for this IKE_SA.
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2005-11-25 13:42:02 +00:00
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*/
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logger_t *logger;
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2006-06-22 06:36:28 +00:00
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/**
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* NAT hasher.
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*/
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hasher_t *nat_hasher;
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/**
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* NAT status of local host.
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*/
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bool nat_here;
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/**
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* NAT status of remote host.
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*/
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bool nat_there;
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2006-07-05 10:53:20 +00:00
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/**
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* message ID for next outgoung request
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*/
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u_int32_t message_id_out;
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2006-06-22 06:36:28 +00:00
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/**
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2006-06-23 14:02:30 +00:00
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* Timestamp of last IKE message received on this SA
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2006-06-22 06:36:28 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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time_t time_inbound;
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2006-06-23 14:02:30 +00:00
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/**
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* Timestamp of last IKE message sent on this SA
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*/
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2006-07-05 10:53:20 +00:00
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time_t time_outbound;
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/**
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* List of queued transactions to process
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*/
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linked_list_t *transaction_queue;
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/**
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* Transaction currently initiated
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* (only one supported yet, window size = 1)
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*/
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transaction_t *transaction_out;
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/**
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* last transaction initiated by peer processed.
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* (only one supported yet, window size = 1)
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* Stored for retransmission.
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2006-06-22 06:36:28 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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transaction_t *transaction_in;
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/**
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* Next incoming transaction expected. Used to
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* do multi transaction operations.
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*/
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transaction_t *transaction_in_next;
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2005-11-25 13:42:02 +00:00
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};
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2005-11-21 10:59:45 +00:00
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/**
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2006-07-05 10:53:20 +00:00
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* get the time of the latest traffic processed by the kernel
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2005-11-21 10:59:45 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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static time_t get_esp_time(private_ike_sa_t* this, bool inbound)
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2005-11-18 12:01:53 +00:00
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{
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2006-07-05 10:53:20 +00:00
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iterator_t *iterator;
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child_sa_t *child_sa;
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time_t latest = 0, use_time;
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2006-03-16 15:25:06 +00:00
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2006-07-05 10:53:20 +00:00
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iterator = this->child_sas->create_iterator(this->child_sas, TRUE);
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while (iterator->iterate(iterator, (void**)&child_sa))
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{
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if (child_sa->get_use_time(child_sa, inbound, &use_time) == SUCCESS)
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{
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latest = max(latest, use_time);
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}
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}
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iterator->destroy(iterator);
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2005-12-02 13:20:20 +00:00
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2006-07-05 10:53:20 +00:00
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return latest;
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2005-12-01 17:16:10 +00:00
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}
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2005-11-25 13:42:02 +00:00
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/**
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2006-07-05 10:53:20 +00:00
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* get the time of the latest received traffice
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2005-11-25 13:42:02 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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static time_t get_time_inbound(private_ike_sa_t *this)
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2005-11-25 13:42:02 +00:00
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{
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2006-07-05 10:53:20 +00:00
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return max(this->time_inbound, get_esp_time(this, TRUE));
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2005-11-25 13:42:02 +00:00
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}
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2005-12-02 19:26:01 +00:00
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/**
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2006-07-05 10:53:20 +00:00
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* get the time of the latest sent traffic
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2005-12-02 19:26:01 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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static time_t get_time_outbound(private_ike_sa_t *this)
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2005-12-02 19:26:01 +00:00
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{
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2006-07-05 10:53:20 +00:00
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return max(this->time_outbound, get_esp_time(this, FALSE));
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2005-12-02 19:26:01 +00:00
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}
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2006-02-09 16:25:02 +00:00
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2005-12-02 19:26:01 +00:00
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/**
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2006-07-05 10:53:20 +00:00
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* Update connection host, as addresses may change (NAT)
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2005-12-02 19:26:01 +00:00
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*/
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2006-07-05 10:53:20 +00:00
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static void update_hosts(private_ike_sa_t *this, host_t *me, host_t *other)
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2005-12-02 19:26:01 +00:00
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{
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2006-07-05 10:53:20 +00:00
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/*
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* Quoting RFC 4306:
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*
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* 2.11. Address and Port Agility
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*
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* IKE runs over UDP ports 500 and 4500, and implicitly sets up ESP and
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* AH associations for the same IP addresses it runs over. The IP
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* addresses and ports in the outer header are, however, not themselves
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* cryptographically protected, and IKE is designed to work even through
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* Network Address Translation (NAT) boxes. An implementation MUST
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* accept incoming requests even if the source port is not 500 or 4500,
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* and MUST respond to the address and port from which the request was
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* received. It MUST specify the address and port at which the request
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* was received as the source address and port in the response. IKE
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* functions identically over IPv4 or IPv6.
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*
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* [...]
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*
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* There are cases where a NAT box decides to remove mappings that
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* are still alive (for example, the keepalive interval is too long,
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* or the NAT box is rebooted). To recover in these cases, hosts
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* that are not behind a NAT SHOULD send all packets (including
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* retransmission packets) to the IP address and port from the last
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* valid authenticated packet from the other end (i.e., dynamically
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* update the address). A host behind a NAT SHOULD NOT do this
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* because it opens a DoS attack possibility. Any authenticated IKE
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* packet or any authenticated UDP-encapsulated ESP packet can be
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* used to detect that the IP address or the port has changed.
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*/
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host_t *old_other = NULL;
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iterator_t *iterator = NULL;
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child_sa_t *child_sa = NULL;
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int my_changes, other_changes;
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2005-12-02 19:26:01 +00:00
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2006-07-05 10:53:20 +00:00
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my_changes = me->get_differences(me, this->connection->get_my_host(this->connection));
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2006-06-07 13:26:23 +00:00
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2006-07-05 10:53:20 +00:00
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old_other = this->connection->get_other_host(this->connection);
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other_changes = other->get_differences(other, old_other);
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2006-06-07 13:26:23 +00:00
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2006-07-05 10:53:20 +00:00
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if (!my_changes && !other_changes)
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{
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return;
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|
}
|
|
|
|
|
|
|
|
if (my_changes)
|
|
|
|
{
|
|
|
|
this->connection->update_my_host(this->connection, me->clone(me));
|
|
|
|
}
|
|
|
|
|
|
|
|
if (!this->nat_here)
|
|
|
|
{
|
|
|
|
/* update without restrictions if we are not NATted */
|
|
|
|
if (other_changes)
|
|
|
|
{
|
|
|
|
this->connection->update_other_host(this->connection, other->clone(other));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* if we are natted, only port may change */
|
|
|
|
if (other_changes & HOST_DIFF_ADDR)
|
|
|
|
{
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
else if (other_changes & HOST_DIFF_PORT)
|
|
|
|
{
|
|
|
|
old_other->set_port(old_other, other->get_port(other));
|
|
|
|
}
|
|
|
|
}
|
|
|
|
iterator = this->child_sas->create_iterator(this->child_sas, TRUE);
|
|
|
|
while (iterator->iterate(iterator, (void**)&child_sa))
|
|
|
|
{
|
|
|
|
child_sa->update_hosts(child_sa,
|
|
|
|
this->connection->get_my_host(this->connection),
|
|
|
|
this->connection->get_other_host(this->connection),
|
|
|
|
my_changes, other_changes);
|
|
|
|
/* TODO: what to do if update fails? Delete CHILD_SA? */
|
|
|
|
}
|
|
|
|
iterator->destroy(iterator);
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* send a request and schedule retransmission
|
2006-06-07 13:26:23 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static status_t transmit_request(private_ike_sa_t *this)
|
2006-06-07 13:26:23 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
message_t *request;
|
|
|
|
packet_t *packet;
|
|
|
|
status_t status;
|
|
|
|
retransmit_request_job_t *job;
|
|
|
|
u_int32_t transmitted;
|
|
|
|
u_int32_t timeout;
|
|
|
|
transaction_t *transaction = this->transaction_out;
|
|
|
|
u_int32_t message_id = transaction->get_message_id(transaction);
|
|
|
|
|
|
|
|
transmitted = transaction->requested(transaction);
|
|
|
|
timeout = charon->configuration->get_retransmit_timeout(charon->configuration,
|
|
|
|
transmitted);
|
|
|
|
if (timeout == 0)
|
|
|
|
{
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"giving up after %d retransmits, deleting IKE_SA",
|
|
|
|
transmitted - 1);
|
|
|
|
return DESTROY_ME;
|
|
|
|
}
|
|
|
|
|
|
|
|
status = transaction->get_request(transaction, &request);
|
|
|
|
if (status != SUCCESS)
|
|
|
|
{
|
|
|
|
return status;
|
|
|
|
}
|
|
|
|
/* if we retransmit, the request is already generated */
|
|
|
|
if (transmitted == 0)
|
|
|
|
{
|
|
|
|
status = request->generate(request, this->crypter_out, this->signer_out, &packet);
|
|
|
|
if (status != SUCCESS)
|
|
|
|
{
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
this->logger->log(this->logger, CONTROL,
|
|
|
|
"sending retransmit %d for %s request with message ID %d",
|
|
|
|
transmitted,
|
|
|
|
mapping_find(exchange_type_m, request->get_exchange_type(request)),
|
|
|
|
message_id);
|
|
|
|
packet = request->get_packet(request);
|
|
|
|
}
|
|
|
|
/* finally send */
|
|
|
|
charon->send_queue->add(charon->send_queue, packet);
|
|
|
|
this->time_outbound = time(NULL);
|
|
|
|
|
|
|
|
/* schedule retransmission job */
|
|
|
|
job = retransmit_request_job_create(message_id, this->ike_sa_id);
|
|
|
|
charon->event_queue->add_relative(charon->event_queue, (job_t*)job, timeout);
|
|
|
|
return SUCCESS;
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of ike_sa.retransmit_request.
|
2006-06-07 13:26:23 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static status_t retransmit_request(private_ike_sa_t *this, u_int32_t message_id)
|
2006-06-07 13:26:23 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
if (this->transaction_out == NULL ||
|
|
|
|
this->transaction_out->get_message_id(this->transaction_out) != message_id)
|
|
|
|
{
|
|
|
|
/* no retransmit necessary, transaction did already complete */
|
|
|
|
return SUCCESS;
|
|
|
|
}
|
|
|
|
return transmit_request(this);
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
|
|
|
|
2006-06-22 06:36:28 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Check for transactions in the queue and initiate the first transaction found.
|
2006-06-22 06:36:28 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static status_t process_transaction_queue(private_ike_sa_t *this)
|
2006-06-22 06:36:28 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
if (this->transaction_out)
|
|
|
|
{
|
|
|
|
/* already a transaction in progress */
|
|
|
|
return SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
while (TRUE)
|
|
|
|
{
|
|
|
|
if (this->transaction_queue->remove_first(this->transaction_queue,
|
|
|
|
(void**)&this->transaction_out) != SUCCESS)
|
|
|
|
{
|
|
|
|
/* transaction queue empty */
|
|
|
|
return SUCCESS;
|
|
|
|
}
|
|
|
|
switch (transmit_request(this))
|
|
|
|
{
|
|
|
|
case SUCCESS:
|
|
|
|
return SUCCESS;
|
|
|
|
case DESTROY_ME:
|
|
|
|
/* critical, IKE_SA unusable, destroy immediately */
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"transaction initiaton failed, deleting IKE_SA");
|
|
|
|
return DESTROY_ME;
|
|
|
|
default:
|
|
|
|
/* discard transaction, process next one */
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"transaction initiation failed, discarded");
|
|
|
|
this->transaction_out->destroy(this->transaction_out);
|
|
|
|
this->transaction_out = NULL;
|
|
|
|
/* handle next transaction */
|
|
|
|
continue;
|
|
|
|
}
|
|
|
|
}
|
2006-06-22 06:36:28 +00:00
|
|
|
}
|
|
|
|
|
2006-06-07 13:26:23 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Queue a new transaction and execute the next outstanding transaction
|
2006-06-07 13:26:23 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static status_t queue_transaction(private_ike_sa_t *this, transaction_t *transaction, bool prefer)
|
2006-06-07 13:26:23 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
/* inject next transaction */
|
|
|
|
if (transaction)
|
2006-06-07 13:26:23 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
if (prefer)
|
|
|
|
{
|
|
|
|
this->transaction_queue->insert_first(this->transaction_queue, transaction);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
this->transaction_queue->insert_last(this->transaction_queue, transaction);
|
|
|
|
}
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
/* process a transaction */
|
|
|
|
return process_transaction_queue(this);
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
2005-12-03 16:02:06 +00:00
|
|
|
|
2005-11-25 13:42:02 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* process an incoming request.
|
2005-11-25 13:42:02 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static status_t process_request(private_ike_sa_t *this, message_t *request)
|
2005-11-25 13:42:02 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
transaction_t *last, *current = NULL;
|
|
|
|
message_t *response;
|
|
|
|
packet_t *packet;
|
|
|
|
u_int32_t request_mid;
|
|
|
|
status_t status;
|
2005-11-28 15:20:51 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
request_mid = request->get_message_id(request);
|
|
|
|
last = this->transaction_in;
|
|
|
|
|
|
|
|
/* check if message ID is correct */
|
|
|
|
if (last)
|
2005-11-25 13:42:02 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
u_int32_t last_mid = last->get_message_id(last);
|
|
|
|
|
|
|
|
if (last_mid == request_mid)
|
|
|
|
{
|
|
|
|
/* retransmit detected */
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"received retransmitted request for message ID %d, retransmitting response",
|
|
|
|
request_mid);
|
|
|
|
last->get_response(last, request, &response, &this->transaction_in_next);
|
|
|
|
packet = response->get_packet(response);
|
|
|
|
charon->send_queue->add(charon->send_queue, packet);
|
|
|
|
this->time_outbound = time(NULL);
|
|
|
|
return SUCCESS;
|
|
|
|
}
|
|
|
|
|
|
|
|
if (last_mid > request_mid)
|
|
|
|
{
|
|
|
|
/* something seriously wrong here, message id may not decrease */
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"received request with message ID %d, excepted %d, ingored",
|
|
|
|
request_mid, last_mid + 1);
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
/* we allow jumps in message IDs, as long as they are incremental */
|
|
|
|
if (last_mid + 1 < request_mid)
|
|
|
|
{
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"received request with message ID %d, excepted %d",
|
|
|
|
request_mid, last_mid + 1);
|
|
|
|
}
|
2005-11-25 13:42:02 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
else
|
2005-11-28 15:20:51 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
if (request_mid != 0)
|
|
|
|
{
|
|
|
|
/* warn, but allow it */
|
|
|
|
this->logger->log(this->logger, CONTROL,
|
|
|
|
"first received request has message ID %d, excepted 0",
|
|
|
|
request_mid);
|
|
|
|
}
|
2005-11-28 15:20:51 +00:00
|
|
|
}
|
2006-02-14 14:52:00 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
/* check if we already have a pre-created transaction for this request */
|
|
|
|
if (this->transaction_in_next)
|
2006-02-14 14:52:00 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
u_int32_t trans_mid = this->transaction_in_next->get_message_id(this->transaction_in_next);
|
|
|
|
|
|
|
|
/* check message id consistency */
|
|
|
|
if (trans_mid == request_mid)
|
|
|
|
{
|
|
|
|
/* use it */
|
|
|
|
current = this->transaction_in_next;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* discard queued transaction */
|
|
|
|
this->transaction_in_next->destroy(this->transaction_in_next);
|
|
|
|
}
|
|
|
|
this->transaction_in_next = NULL;
|
2006-02-14 14:52:00 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
/* create new transaction if "next" unusable */
|
|
|
|
if (current == NULL)
|
2005-11-28 15:20:51 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
current = transaction_create(&this->public, request);
|
|
|
|
if (current == NULL)
|
|
|
|
{
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"no idea how to handle received message (%d), ignored",
|
|
|
|
request->get_exchange_type(request));
|
|
|
|
return FAILED;
|
|
|
|
}
|
2006-02-14 14:52:00 +00:00
|
|
|
}
|
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
/* send message. get_request() always gives a valid response */
|
|
|
|
status = current->get_response(current, request, &response, &this->transaction_in_next);
|
|
|
|
if (response->generate(response, this->crypter_out, this->signer_out, &packet) != SUCCESS)
|
2006-02-14 14:52:00 +00:00
|
|
|
{
|
2006-06-15 13:14:09 +00:00
|
|
|
this->logger->log(this->logger, ERROR,
|
2006-07-05 10:53:20 +00:00
|
|
|
"response generation failed, discarding transaction");
|
|
|
|
current->destroy(current);
|
2005-11-28 15:20:51 +00:00
|
|
|
return FAILED;
|
|
|
|
}
|
2006-02-14 14:52:00 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
charon->send_queue->add(charon->send_queue, packet);
|
|
|
|
this->time_outbound = time(NULL);
|
|
|
|
/* act depending on transaction result */
|
|
|
|
switch (status)
|
|
|
|
{
|
|
|
|
case DESTROY_ME:
|
|
|
|
/* transactions says we should destroy the IKE_SA, so do it */
|
|
|
|
current->destroy(current);
|
|
|
|
return DESTROY_ME;
|
|
|
|
default:
|
|
|
|
/* store for retransmission, destroy old transaction */
|
|
|
|
this->transaction_in = current;
|
|
|
|
if (last)
|
|
|
|
{
|
|
|
|
last->destroy(last);
|
|
|
|
}
|
|
|
|
return SUCCESS;
|
|
|
|
}
|
|
|
|
}
|
2005-11-28 15:20:51 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
/**
|
|
|
|
* process an incoming response
|
|
|
|
*/
|
|
|
|
static status_t process_response(private_ike_sa_t *this, message_t *response)
|
|
|
|
{
|
|
|
|
transaction_t *current, *new = NULL;
|
2006-02-14 14:52:00 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
current = this->transaction_out;
|
|
|
|
/* check if message ID is that of our currently active transaction */
|
|
|
|
if (current == NULL ||
|
|
|
|
current->get_message_id(current) !=
|
|
|
|
response->get_message_id(response))
|
2006-02-14 14:52:00 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"received response with message ID %d not requested, ignored");
|
2006-02-14 14:52:00 +00:00
|
|
|
return FAILED;
|
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
|
|
|
|
switch (current->conclude(current, response, &new))
|
2005-11-28 15:20:51 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
case DESTROY_ME:
|
|
|
|
/* state requested to destroy IKE_SA */
|
|
|
|
return DESTROY_ME;
|
|
|
|
default:
|
|
|
|
/* discard transaction, process next one */
|
|
|
|
break;
|
2005-11-28 15:20:51 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
/* transaction comleted, remove */
|
|
|
|
current->destroy(current);
|
|
|
|
this->transaction_out = NULL;
|
2005-11-28 15:20:51 +00:00
|
|
|
|
2006-07-07 07:04:07 +00:00
|
|
|
/* if conclude() created a new transaction, we increment the message_id
|
|
|
|
* counter, as the new transaction used the next one */
|
|
|
|
if (new)
|
|
|
|
{
|
|
|
|
this->message_id_out++;
|
|
|
|
}
|
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
/* queue new transaction */
|
|
|
|
return queue_transaction(this, new, TRUE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* send a notify back to the sender
|
|
|
|
*/
|
|
|
|
static void send_notify_response(private_ike_sa_t *this,
|
|
|
|
message_t *request,
|
|
|
|
notify_type_t type)
|
|
|
|
{
|
|
|
|
notify_payload_t *notify;
|
|
|
|
message_t *response;
|
|
|
|
host_t *src, *dst;
|
|
|
|
packet_t *packet;
|
|
|
|
|
|
|
|
response = message_create();
|
|
|
|
dst = request->get_source(request);
|
|
|
|
src = request->get_destination(request);
|
|
|
|
response->set_source(response, src->clone(src));
|
|
|
|
response->set_destination(response, dst->clone(dst));
|
|
|
|
response->set_exchange_type(response, request->get_exchange_type(request));
|
|
|
|
response->set_request(response, FALSE);
|
|
|
|
response->set_message_id(response, request->get_message_id(request));
|
|
|
|
response->set_ike_sa_id(response, this->ike_sa_id);
|
|
|
|
notify = notify_payload_create_from_protocol_and_type(PROTO_NONE, type);
|
|
|
|
response->add_payload(response, (payload_t *)notify);
|
|
|
|
if (response->generate(response, this->crypter_out, this->signer_out, &packet) != SUCCESS)
|
2005-11-28 15:20:51 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
response->destroy(response);
|
|
|
|
return;
|
2005-11-28 15:20:51 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
charon->send_queue->add(charon->send_queue, packet);
|
|
|
|
this->time_outbound = time(NULL);
|
|
|
|
response->destroy(response);
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Implementation of ike_sa_t.process_message.
|
|
|
|
*/
|
|
|
|
static status_t process_message(private_ike_sa_t *this, message_t *message)
|
|
|
|
{
|
|
|
|
status_t status;
|
|
|
|
bool is_request;
|
2006-02-14 14:52:00 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
is_request = message->get_request(message);
|
2006-02-14 14:52:00 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
status = message->parse_body(message, this->crypter_in, this->signer_in);
|
|
|
|
if (status != SUCCESS)
|
2005-11-28 15:20:51 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
switch (status)
|
|
|
|
{
|
|
|
|
case NOT_SUPPORTED:
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"ciritcal unknown payloads found");
|
|
|
|
if (is_request)
|
|
|
|
{
|
|
|
|
send_notify_response(this, message, UNSUPPORTED_CRITICAL_PAYLOAD);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case PARSE_ERROR:
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"message parsing failed");
|
|
|
|
if (is_request)
|
|
|
|
{
|
|
|
|
send_notify_response(this, message, INVALID_SYNTAX);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case VERIFY_ERROR:
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"message verification failed");
|
|
|
|
if (is_request)
|
|
|
|
{
|
|
|
|
send_notify_response(this, message, INVALID_SYNTAX);
|
|
|
|
}
|
|
|
|
break;
|
|
|
|
case FAILED:
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"integrity check failed");
|
|
|
|
/* ignored */
|
|
|
|
break;
|
|
|
|
case INVALID_STATE:
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"found encrypted message, but no keys available");
|
|
|
|
if (is_request)
|
|
|
|
{
|
|
|
|
send_notify_response(this, message, INVALID_SYNTAX);
|
|
|
|
}
|
|
|
|
default:
|
|
|
|
break;
|
|
|
|
}
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"%s %s with message ID %d processing failed",
|
|
|
|
mapping_find(exchange_type_m, message->get_exchange_type(message)),
|
|
|
|
message->get_request(message) ? "request" : "response",
|
|
|
|
message->get_message_id(message));
|
2005-11-28 15:20:51 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
else
|
2006-02-14 14:52:00 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
/* check if message is trustworthy, and update connection information */
|
|
|
|
if ((this->state == SA_CREATED && this->connection) ||
|
|
|
|
message->get_exchange_type(message) != IKE_SA_INIT)
|
|
|
|
{
|
|
|
|
update_hosts(this, message->get_destination(message),
|
|
|
|
message->get_source(message));
|
|
|
|
this->time_inbound = time(NULL);
|
|
|
|
}
|
|
|
|
if (is_request)
|
|
|
|
{
|
|
|
|
status = process_request(this, message);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
status = process_response(this, message);
|
|
|
|
}
|
2006-02-14 14:52:00 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
return status;
|
2005-11-25 13:42:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of ike_sa_t.initiate.
|
2005-11-25 13:42:02 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static status_t initiate(private_ike_sa_t *this, connection_t *connection)
|
2005-11-25 13:42:02 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
ike_sa_init_t *ike_sa_init;
|
|
|
|
|
|
|
|
/* set connection and policy */
|
|
|
|
this->connection = connection;
|
|
|
|
this->policy = charon->policies->get_policy_by_name(charon->policies,
|
|
|
|
this->connection->get_name(this->connection));
|
|
|
|
if (this->policy == NULL)
|
|
|
|
{
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"no policy found for connection %s, aborting",
|
|
|
|
connection->get_name(connection));
|
|
|
|
return DESTROY_ME;
|
|
|
|
}
|
2006-07-07 07:04:07 +00:00
|
|
|
this->message_id_out = 0;
|
|
|
|
ike_sa_init = ike_sa_init_create(&this->public, this->message_id_out++);
|
2006-07-05 10:53:20 +00:00
|
|
|
return queue_transaction(this, (transaction_t*)ike_sa_init, TRUE);
|
2005-11-25 13:42:02 +00:00
|
|
|
}
|
|
|
|
|
2005-11-29 17:19:59 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of ike_sa_t.send_dpd
|
2005-11-29 17:19:59 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static status_t send_dpd(private_ike_sa_t *this)
|
2005-11-29 17:19:59 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
send_dpd_job_t *job;
|
|
|
|
time_t diff, interval;
|
|
|
|
status_t status = SUCCESS;
|
|
|
|
|
|
|
|
interval = charon->configuration->get_dpd_interval(charon->configuration);
|
|
|
|
|
|
|
|
if (this->transaction_out)
|
|
|
|
{
|
|
|
|
/* there is a transaction in progress. Come back later */
|
|
|
|
diff = 0;
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
/* check if there was any inbound traffic */
|
|
|
|
time_t last_in, now;
|
|
|
|
last_in = get_time_inbound(this);
|
|
|
|
now = time(NULL);
|
|
|
|
diff = now - last_in;
|
|
|
|
if (diff >= interval)
|
|
|
|
{
|
|
|
|
/* to long ago, initiate dead peer detection */
|
|
|
|
dead_peer_detection_t *dpd;
|
|
|
|
this->logger->log(this->logger, CONTROL, "sending DPD request");
|
|
|
|
dpd = dead_peer_detection_create(&this->public, this->message_id_out++);
|
|
|
|
status = queue_transaction(this, (transaction_t*)dpd, FALSE);
|
|
|
|
diff = 0;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
/* recheck in "interval" seconds */
|
|
|
|
job = send_dpd_job_create(this->ike_sa_id);
|
|
|
|
charon->event_queue->add_relative(charon->event_queue, (job_t*)job,
|
|
|
|
(interval - diff) * 1000);
|
|
|
|
return SUCCESS;
|
2005-11-29 17:19:59 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of ike_sa_t.send_keepalive
|
2005-11-29 17:19:59 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static void send_keepalive(private_ike_sa_t *this)
|
2005-11-29 17:19:59 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
send_keepalive_job_t *job;
|
|
|
|
time_t last_out, now, diff, interval;
|
|
|
|
|
|
|
|
last_out = get_time_outbound(this);
|
|
|
|
now = time(NULL);
|
|
|
|
|
|
|
|
diff = now - last_out;
|
|
|
|
interval = charon->configuration->get_keepalive_interval(charon->configuration);
|
|
|
|
|
|
|
|
if (diff >= interval)
|
|
|
|
{
|
|
|
|
host_t *me, *other;
|
|
|
|
packet_t *packet;
|
|
|
|
chunk_t data;
|
|
|
|
|
|
|
|
packet = packet_create();
|
|
|
|
me = this->connection->get_my_host(this->connection);
|
|
|
|
other = this->connection->get_other_host(this->connection);
|
|
|
|
packet->set_source(packet, me->clone(me));
|
|
|
|
packet->set_destination(packet, other->clone(other));
|
|
|
|
data.ptr = malloc(1);
|
|
|
|
data.ptr[0] = 0xFF;
|
|
|
|
data.len = 1;
|
|
|
|
packet->set_data(packet, data);
|
|
|
|
charon->send_queue->add(charon->send_queue, packet);
|
|
|
|
this->logger->log(this->logger, CONTROL, "sending keep alive");
|
|
|
|
diff = 0;
|
|
|
|
}
|
|
|
|
job = send_keepalive_job_create(this->ike_sa_id);
|
|
|
|
charon->event_queue->add_relative(charon->event_queue, (job_t*)job,
|
|
|
|
(interval - diff) * 1000);
|
2005-11-29 17:19:59 +00:00
|
|
|
}
|
|
|
|
|
2005-12-02 12:38:55 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of ike_sa_t.get_state.
|
2005-12-02 12:38:55 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static ike_sa_state_t get_state(private_ike_sa_t *this)
|
2005-12-02 12:38:55 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
return this->state;
|
2005-12-02 12:38:55 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of ike_sa_t.set_state.
|
2005-12-02 12:38:55 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static void set_state(private_ike_sa_t *this, ike_sa_state_t state)
|
2005-12-02 12:38:55 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->logger->log(this->logger, CONTROL, "state change: %s => %s",
|
|
|
|
mapping_find(ike_sa_state_m, this->state),
|
|
|
|
mapping_find(ike_sa_state_m, state));
|
|
|
|
if (state == SA_ESTABLISHED)
|
|
|
|
{
|
|
|
|
host_t *my_host, *other_host;
|
|
|
|
identification_t *my_id, *other_id;
|
|
|
|
my_host = this->connection->get_my_host(this->connection);
|
|
|
|
other_host = this->connection->get_other_host(this->connection);
|
|
|
|
my_id = this->policy->get_my_id(this->policy);
|
|
|
|
other_id = this->policy->get_other_id(this->policy);
|
|
|
|
this->logger->log(this->logger, AUDIT, "IKE_SA established: %s[%s]...%s[%s]",
|
|
|
|
my_host->get_address(my_host),
|
|
|
|
my_id->get_string(my_id),
|
|
|
|
other_host->get_address(other_host),
|
|
|
|
other_id->get_string(other_id));
|
|
|
|
|
|
|
|
send_dpd(this);
|
|
|
|
}
|
|
|
|
this->state = state;
|
2005-12-02 12:38:55 +00:00
|
|
|
}
|
|
|
|
|
2006-06-23 14:02:30 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of protected_ike_sa_t.get_connection.
|
2006-06-23 14:02:30 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static connection_t *get_connection(private_ike_sa_t *this)
|
2006-06-23 14:02:30 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
return this->connection;
|
2006-06-23 14:02:30 +00:00
|
|
|
}
|
|
|
|
|
2005-11-25 13:42:02 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of protected_ike_sa_t.set_connection.
|
2005-11-25 13:42:02 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static void set_connection(private_ike_sa_t *this,connection_t * connection)
|
2005-11-25 13:42:02 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->connection = connection;
|
2005-11-25 13:42:02 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of protected_ike_sa_t.get_policy.
|
2005-11-25 13:42:02 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static policy_t *get_policy(private_ike_sa_t *this)
|
2005-11-25 13:42:02 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
return this->policy;
|
2005-11-25 13:42:02 +00:00
|
|
|
}
|
|
|
|
|
2005-12-07 09:53:33 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of protected_ike_sa_t.set_policy.
|
2005-12-07 09:53:33 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static void set_policy(private_ike_sa_t *this,policy_t * policy)
|
2005-12-07 09:53:33 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->policy = policy;
|
2005-12-07 09:53:33 +00:00
|
|
|
}
|
|
|
|
|
2005-12-02 11:38:56 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of protected_ike_sa_t.get_prf.
|
2005-12-02 14:07:36 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static prf_t *get_prf(private_ike_sa_t *this)
|
2005-12-02 14:07:36 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
return this->prf;
|
2005-12-02 14:07:36 +00:00
|
|
|
}
|
|
|
|
|
2005-12-02 19:26:01 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of protected_ike_sa_t.get_prf.
|
2005-12-02 19:26:01 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static prf_t *get_child_prf(private_ike_sa_t *this)
|
2005-12-02 19:26:01 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
return this->child_prf;
|
2005-12-03 14:47:58 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of protected_ike_sa_t.get_prf_auth_i.
|
2005-12-03 14:47:58 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static prf_t *get_prf_auth_i(private_ike_sa_t *this)
|
2005-12-03 14:47:58 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
return this->prf_auth_i;
|
2005-12-02 19:26:01 +00:00
|
|
|
}
|
|
|
|
|
2006-02-16 09:55:07 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of protected_ike_sa_t.get_prf_auth_r.
|
2006-02-16 09:55:07 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static prf_t *get_prf_auth_r(private_ike_sa_t *this)
|
2006-02-16 09:55:07 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
return this->prf_auth_r;
|
|
|
|
}
|
|
|
|
/**
|
|
|
|
* Implementation of ike_sa_t.get_id.
|
|
|
|
*/
|
|
|
|
static ike_sa_id_t* get_id(private_ike_sa_t *this)
|
|
|
|
{
|
|
|
|
return this->ike_sa_id;
|
2006-02-16 09:55:07 +00:00
|
|
|
}
|
|
|
|
|
2006-06-07 13:26:23 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of protected_ike_sa_t.build_transforms.
|
2006-06-07 13:26:23 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static status_t build_transforms(private_ike_sa_t *this, proposal_t *proposal,
|
|
|
|
diffie_hellman_t *dh, chunk_t nonce_i, chunk_t nonce_r,
|
|
|
|
bool initiator)
|
2006-06-07 13:26:23 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
chunk_t nonces, nonces_spis, skeyseed, key, secret;
|
|
|
|
u_int64_t spi_i, spi_r;
|
|
|
|
prf_plus_t *prf_plus;
|
|
|
|
algorithm_t *algo;
|
|
|
|
size_t key_size;
|
|
|
|
crypter_t *crypter_i, *crypter_r;
|
|
|
|
signer_t *signer_i, *signer_r;
|
2006-06-07 13:26:23 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
/* Build the PRF+ instance for deriving keys */
|
|
|
|
if (!proposal->get_algorithm(proposal, PSEUDO_RANDOM_FUNCTION, &algo))
|
2006-06-07 13:26:23 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->logger->log(this->logger, ERROR, "no PSEUDO_RANDOM_FUNCTION selected!");
|
|
|
|
return FAILED;
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
this->prf = prf_create(algo->algorithm);
|
|
|
|
if (this->prf == NULL)
|
2006-06-07 13:26:23 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->logger->log(this->logger, ERROR, "PSEUDO_RANDOM_FUNCTION %s not supported!",
|
|
|
|
mapping_find(pseudo_random_function_m, algo->algorithm));
|
|
|
|
return FAILED;
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
/* nonces = nonce_i | nonce_r */
|
|
|
|
nonces = chunk_alloc(nonce_i.len + nonce_r.len);
|
|
|
|
memcpy(nonces.ptr, nonce_i.ptr, nonce_i.len);
|
|
|
|
memcpy(nonces.ptr + nonce_i.len, nonce_r.ptr, nonce_r.len);
|
2006-06-07 13:26:23 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
/* prf_seed = nonce_i | nonce_r | spi_i | spi_r */
|
|
|
|
nonces_spis = chunk_alloc(nonces.len + 16);
|
|
|
|
memcpy(nonces_spis.ptr, nonces.ptr, nonces.len);
|
|
|
|
spi_i = this->ike_sa_id->get_initiator_spi(this->ike_sa_id);
|
|
|
|
spi_r = this->ike_sa_id->get_responder_spi(this->ike_sa_id);
|
|
|
|
memcpy(nonces_spis.ptr + nonces.len, &spi_i, 8);
|
|
|
|
memcpy(nonces_spis.ptr + nonces.len + 8, &spi_r, 8);
|
|
|
|
|
|
|
|
/* SKEYSEED = prf(Ni | Nr, g^ir) */
|
|
|
|
dh->get_shared_secret(dh, &secret);
|
|
|
|
this->logger->log_chunk(this->logger, PRIVATE, "shared Diffie Hellman secret", secret);
|
|
|
|
this->prf->set_key(this->prf, nonces);
|
|
|
|
this->prf->allocate_bytes(this->prf, secret, &skeyseed);
|
|
|
|
this->logger->log_chunk(this->logger, PRIVATE|LEVEL1, "SKEYSEED", skeyseed);
|
|
|
|
chunk_free(&secret);
|
2006-06-07 13:26:23 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
/* prf+ (SKEYSEED, Ni | Nr | SPIi | SPIr )
|
|
|
|
* = SK_d | SK_ai | SK_ar | SK_ei | SK_er | SK_pi | SK_pr
|
|
|
|
*/
|
|
|
|
this->prf->set_key(this->prf, skeyseed);
|
|
|
|
prf_plus = prf_plus_create(this->prf, nonces_spis);
|
2006-06-07 13:26:23 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
/* clean up unused stuff */
|
|
|
|
chunk_free(&nonces);
|
|
|
|
chunk_free(&nonces_spis);
|
|
|
|
chunk_free(&skeyseed);
|
|
|
|
|
|
|
|
/* SK_d used for prf+ to derive keys for child SAs */
|
|
|
|
this->child_prf = prf_create(algo->algorithm);
|
|
|
|
key_size = this->child_prf->get_key_size(this->child_prf);
|
|
|
|
prf_plus->allocate_bytes(prf_plus, key_size, &key);
|
|
|
|
this->logger->log_chunk(this->logger, PRIVATE, "Sk_d secret", key);
|
|
|
|
this->child_prf->set_key(this->child_prf, key);
|
|
|
|
chunk_free(&key);
|
|
|
|
|
|
|
|
/* SK_ai/SK_ar used for integrity protection */
|
|
|
|
if (!proposal->get_algorithm(proposal, INTEGRITY_ALGORITHM, &algo))
|
2006-06-07 13:26:23 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->logger->log(this->logger, ERROR, "no INTEGRITY_ALGORITHM selected?!");
|
2006-06-07 13:26:23 +00:00
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
signer_i = signer_create(algo->algorithm);
|
|
|
|
signer_r = signer_create(algo->algorithm);
|
|
|
|
if (signer_i == NULL || signer_r == NULL)
|
2006-06-22 06:36:28 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->logger->log(this->logger, ERROR, "INTEGRITY_ALGORITHM %s not supported!",
|
|
|
|
mapping_find(integrity_algorithm_m,algo->algorithm));
|
|
|
|
return FAILED;
|
2006-06-22 06:36:28 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
key_size = signer_i->get_key_size(signer_i);
|
|
|
|
|
|
|
|
prf_plus->allocate_bytes(prf_plus, key_size, &key);
|
|
|
|
this->logger->log_chunk(this->logger, CONTROL|LEVEL1, "Sk_ai secret", key);
|
|
|
|
signer_i->set_key(signer_i, key);
|
|
|
|
chunk_free(&key);
|
2006-06-22 06:36:28 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
prf_plus->allocate_bytes(prf_plus, key_size, &key);
|
|
|
|
this->logger->log_chunk(this->logger, CONTROL|LEVEL1, "Sk_ar secret", key);
|
|
|
|
signer_r->set_key(signer_r, key);
|
|
|
|
chunk_free(&key);
|
2006-06-22 06:36:28 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
if (initiator)
|
2006-06-22 06:36:28 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->signer_in = signer_i;
|
|
|
|
this->signer_out = signer_r;
|
2006-06-22 06:36:28 +00:00
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->signer_in = signer_r;
|
|
|
|
this->signer_out = signer_i;
|
2006-06-22 06:36:28 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
|
|
|
|
/* SK_ei/SK_er used for encryption */
|
|
|
|
if (!proposal->get_algorithm(proposal, ENCRYPTION_ALGORITHM, &algo))
|
2006-06-22 06:36:28 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->logger->log(this->logger, ERROR, "no ENCRYPTION_ALGORITHM selected!");
|
|
|
|
return FAILED;
|
|
|
|
}
|
|
|
|
crypter_i = crypter_create(algo->algorithm, algo->key_size / 8);
|
|
|
|
crypter_r = crypter_create(algo->algorithm, algo->key_size / 8);
|
|
|
|
if (crypter_i == NULL || crypter_r == NULL)
|
|
|
|
{
|
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"ENCRYPTION_ALGORITHM %s (key size %d) not supported!",
|
|
|
|
mapping_find(encryption_algorithm_m, algo->algorithm),
|
|
|
|
algo->key_size);
|
|
|
|
return FAILED;
|
2006-06-22 06:36:28 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
key_size = crypter_i->get_key_size(crypter_i);
|
2006-06-22 06:36:28 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
prf_plus->allocate_bytes(prf_plus, key_size, &key);
|
|
|
|
this->logger->log_chunk(this->logger, PRIVATE, "Sk_ei secret", key);
|
|
|
|
crypter_i->set_key(crypter_i, key);
|
|
|
|
chunk_free(&key);
|
|
|
|
|
|
|
|
prf_plus->allocate_bytes(prf_plus, key_size, &key);
|
|
|
|
this->logger->log_chunk(this->logger, PRIVATE, "Sk_er secret", key);
|
|
|
|
crypter_r->set_key(crypter_r, key);
|
|
|
|
chunk_free(&key);
|
|
|
|
|
|
|
|
if (initiator)
|
2006-06-22 06:36:28 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->crypter_in = crypter_i;
|
|
|
|
this->crypter_out = crypter_r;
|
2006-06-22 06:36:28 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
else
|
|
|
|
{
|
|
|
|
this->crypter_in = crypter_r;
|
|
|
|
this->crypter_out = crypter_i;
|
|
|
|
}
|
|
|
|
|
|
|
|
/* SK_pi/SK_pr used for authentication */
|
|
|
|
proposal->get_algorithm(proposal, PSEUDO_RANDOM_FUNCTION, &algo);
|
|
|
|
this->prf_auth_i = prf_create(algo->algorithm);
|
|
|
|
this->prf_auth_r = prf_create(algo->algorithm);
|
|
|
|
|
|
|
|
key_size = this->prf_auth_i->get_key_size(this->prf_auth_i);
|
|
|
|
prf_plus->allocate_bytes(prf_plus, key_size, &key);
|
|
|
|
this->logger->log_chunk(this->logger, PRIVATE, "Sk_pi secret", key);
|
|
|
|
this->prf_auth_i->set_key(this->prf_auth_i, key);
|
|
|
|
chunk_free(&key);
|
|
|
|
|
|
|
|
prf_plus->allocate_bytes(prf_plus, key_size, &key);
|
|
|
|
this->logger->log_chunk(this->logger, PRIVATE, "Sk_pr secret", key);
|
|
|
|
this->prf_auth_r->set_key(this->prf_auth_r, key);
|
|
|
|
chunk_free(&key);
|
|
|
|
|
|
|
|
/* all done, prf_plus not needed anymore */
|
|
|
|
prf_plus->destroy(prf_plus);
|
|
|
|
|
|
|
|
return SUCCESS;
|
2006-06-22 06:36:28 +00:00
|
|
|
}
|
|
|
|
|
2006-05-31 14:23:15 +00:00
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of protected_ike_sa_t.add_child_sa.
|
2006-05-31 14:23:15 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static void add_child_sa(private_ike_sa_t *this, child_sa_t *child_sa)
|
2006-05-31 14:23:15 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->child_sas->insert_last(this->child_sas, child_sa);
|
2006-05-31 14:23:15 +00:00
|
|
|
}
|
|
|
|
|
2006-06-09 15:12:43 +00:00
|
|
|
/**
|
|
|
|
* Implementation of protected_ike_sa_t.get_child_sa.
|
|
|
|
*/
|
2006-07-07 07:04:07 +00:00
|
|
|
static child_sa_t* get_child_sa(private_ike_sa_t *this, protocol_id_t protocol,
|
|
|
|
u_int32_t spi, bool inbound)
|
2006-06-09 15:12:43 +00:00
|
|
|
{
|
|
|
|
iterator_t *iterator;
|
|
|
|
child_sa_t *current, *found = NULL;
|
|
|
|
|
|
|
|
iterator = this->child_sas->create_iterator(this->child_sas, FALSE);
|
|
|
|
while (iterator->has_next(iterator))
|
|
|
|
{
|
|
|
|
iterator->current(iterator, (void**)¤t);
|
2006-07-07 07:04:07 +00:00
|
|
|
if (current->get_spi(current, inbound) == spi &&
|
|
|
|
current->get_protocol(current) == protocol)
|
2006-06-09 15:12:43 +00:00
|
|
|
{
|
|
|
|
found = current;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
iterator->destroy(iterator);
|
|
|
|
return found;
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Implementation of ike_sa_t.rekey_child_sa.
|
|
|
|
*/
|
2006-07-07 07:04:07 +00:00
|
|
|
static status_t rekey_child_sa(private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
|
2006-06-07 13:26:23 +00:00
|
|
|
{
|
2006-07-07 07:04:07 +00:00
|
|
|
create_child_sa_t *rekey;
|
2006-06-07 13:26:23 +00:00
|
|
|
child_sa_t *child_sa;
|
|
|
|
|
2006-07-07 07:04:07 +00:00
|
|
|
child_sa = get_child_sa(this, protocol, spi, TRUE);
|
|
|
|
if (child_sa == NULL)
|
2006-06-07 13:26:23 +00:00
|
|
|
{
|
2006-07-07 07:04:07 +00:00
|
|
|
return NOT_FOUND;
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
|
|
|
|
2006-07-07 07:04:07 +00:00
|
|
|
rekey = create_child_sa_create(&this->public, this->message_id_out++);
|
|
|
|
rekey->rekeys_child(rekey, child_sa);
|
|
|
|
return queue_transaction(this, (transaction_t*)rekey, FALSE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Implementation of ike_sa_t.delete_child_sa.
|
|
|
|
*/
|
|
|
|
static status_t delete_child_sa(private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
|
|
|
|
{
|
|
|
|
delete_child_sa_t *del;
|
|
|
|
child_sa_t *child_sa;
|
|
|
|
|
|
|
|
child_sa = get_child_sa(this, protocol, spi, TRUE);
|
2006-06-07 13:26:23 +00:00
|
|
|
if (child_sa == NULL)
|
|
|
|
{
|
2006-07-07 07:04:07 +00:00
|
|
|
return NOT_FOUND;
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
|
|
|
|
2006-07-07 07:04:07 +00:00
|
|
|
del = delete_child_sa_create(&this->public, this->message_id_out++);
|
|
|
|
del->set_child_sa(del, child_sa);
|
|
|
|
return queue_transaction(this, (transaction_t*)del, FALSE);
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
|
|
|
* Implementation of protected_ike_sa_t.destroy_child_sa.
|
|
|
|
*/
|
|
|
|
static status_t destroy_child_sa(private_ike_sa_t *this, protocol_id_t protocol, u_int32_t spi)
|
|
|
|
{
|
|
|
|
iterator_t *iterator;
|
|
|
|
child_sa_t *child_sa;
|
|
|
|
status_t status = NOT_FOUND;
|
2006-06-07 13:26:23 +00:00
|
|
|
|
2006-07-07 07:04:07 +00:00
|
|
|
iterator = this->child_sas->create_iterator(this->child_sas, TRUE);
|
|
|
|
while (iterator->iterate(iterator, (void**)&child_sa))
|
|
|
|
{
|
|
|
|
if (child_sa->get_protocol(child_sa) == protocol &&
|
|
|
|
child_sa->get_spi(child_sa, TRUE) == spi)
|
|
|
|
{
|
|
|
|
child_sa->destroy(child_sa);
|
|
|
|
iterator->remove(iterator);
|
|
|
|
status = SUCCESS;
|
|
|
|
break;
|
|
|
|
}
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
2006-07-07 07:04:07 +00:00
|
|
|
iterator->destroy(iterator);
|
|
|
|
return status;
|
2006-06-07 13:26:23 +00:00
|
|
|
}
|
|
|
|
|
2005-11-25 13:42:02 +00:00
|
|
|
|
2006-04-26 12:28:02 +00:00
|
|
|
/**
|
|
|
|
* Implementation of protected_ike_sa_t.log_status.
|
|
|
|
*/
|
2006-04-27 07:24:04 +00:00
|
|
|
static void log_status(private_ike_sa_t *this, logger_t *logger, char *name)
|
2006-04-26 12:28:02 +00:00
|
|
|
{
|
|
|
|
iterator_t *iterator;
|
|
|
|
child_sa_t *child_sa;
|
2006-05-23 08:01:49 +00:00
|
|
|
host_t *my_host, *other_host;
|
2006-05-29 11:09:45 +00:00
|
|
|
identification_t *my_id = NULL, *other_id = NULL;
|
2006-04-26 12:28:02 +00:00
|
|
|
|
2006-04-27 07:24:04 +00:00
|
|
|
/* only log if name == NULL or name == connection_name */
|
|
|
|
if (name)
|
|
|
|
{
|
2006-05-30 11:03:55 +00:00
|
|
|
if (streq(this->connection->get_name(this->connection), name))
|
2006-04-27 07:24:04 +00:00
|
|
|
{
|
|
|
|
return;
|
|
|
|
}
|
|
|
|
}
|
2006-05-23 08:01:49 +00:00
|
|
|
my_host = this->connection->get_my_host(this->connection);
|
|
|
|
other_host = this->connection->get_other_host(this->connection);
|
2006-04-26 12:28:02 +00:00
|
|
|
|
2006-05-31 14:23:15 +00:00
|
|
|
/* use policy information, if available */
|
2006-05-29 11:09:45 +00:00
|
|
|
if (this->policy)
|
|
|
|
{
|
|
|
|
my_id = this->policy->get_my_id(this->policy);
|
|
|
|
other_id = this->policy->get_other_id(this->policy);
|
2006-05-31 14:23:15 +00:00
|
|
|
name = this->policy->get_name(this->policy);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
name = this->connection->get_name(this->connection);
|
2006-05-29 11:09:45 +00:00
|
|
|
}
|
2006-04-26 12:28:02 +00:00
|
|
|
|
|
|
|
if (logger == NULL)
|
|
|
|
{
|
|
|
|
logger = this->logger;
|
|
|
|
}
|
2006-05-23 13:25:57 +00:00
|
|
|
logger->log(logger, CONTROL|LEVEL1, " \"%s\": IKE_SA in state %s, SPIs: 0x%.16llx 0x%.16llx",
|
2006-04-27 07:24:04 +00:00
|
|
|
name,
|
2006-07-05 10:53:20 +00:00
|
|
|
mapping_find(ike_sa_state_m, this->state),
|
2006-04-26 12:28:02 +00:00
|
|
|
this->ike_sa_id->get_initiator_spi(this->ike_sa_id),
|
|
|
|
this->ike_sa_id->get_responder_spi(this->ike_sa_id));
|
2006-05-23 13:25:57 +00:00
|
|
|
logger->log(logger, CONTROL, " \"%s\": %s[%s]...%s[%s]",
|
2006-04-27 07:24:04 +00:00
|
|
|
name,
|
2006-04-26 12:28:02 +00:00
|
|
|
my_host->get_address(my_host),
|
2006-05-29 11:09:45 +00:00
|
|
|
my_id ? my_id->get_string(my_id) : "(unknown)",
|
2006-04-26 12:28:02 +00:00
|
|
|
other_host->get_address(other_host),
|
2006-05-29 11:09:45 +00:00
|
|
|
other_id ? other_id->get_string(other_id) : "(unknown)");
|
2006-04-26 12:28:02 +00:00
|
|
|
|
|
|
|
iterator = this->child_sas->create_iterator(this->child_sas, TRUE);
|
|
|
|
while (iterator->has_next(iterator))
|
|
|
|
{
|
|
|
|
iterator->current(iterator, (void**)&child_sa);
|
2006-04-27 07:24:04 +00:00
|
|
|
child_sa->log_status(child_sa, logger, name);
|
2006-04-26 12:28:02 +00:00
|
|
|
}
|
|
|
|
iterator->destroy(iterator);
|
|
|
|
}
|
|
|
|
|
2006-05-23 08:01:49 +00:00
|
|
|
/**
|
|
|
|
* Implementation of public_ike_sa_t.delete.
|
|
|
|
*/
|
|
|
|
static status_t delete_(private_ike_sa_t *this)
|
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
delete_ike_sa_t *delete_ike_sa;
|
|
|
|
delete_ike_sa = delete_ike_sa_create(&this->public, this->message_id_out++);
|
2006-05-23 08:01:49 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
return queue_transaction(this, (transaction_t*)delete_ike_sa, FALSE);
|
2006-06-22 06:36:28 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of ike_sa_t.is_natt_enabled.
|
2006-06-22 06:36:28 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static bool is_natt_enabled (private_ike_sa_t *this)
|
2006-06-22 06:36:28 +00:00
|
|
|
{
|
|
|
|
return this->nat_here || this->nat_there;
|
|
|
|
}
|
|
|
|
|
|
|
|
/**
|
2006-07-05 10:53:20 +00:00
|
|
|
* Implementation of protected_ike_sa_t.enable_natt.
|
2006-06-22 06:36:28 +00:00
|
|
|
*/
|
2006-07-05 10:53:20 +00:00
|
|
|
static void enable_natt (private_ike_sa_t *this, bool local)
|
2006-06-22 06:36:28 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
if (local)
|
2006-06-23 14:02:30 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->logger->log(this->logger, CONTROL,
|
|
|
|
"local host is behind NAT, using NAT-T, scheduled keep alives");
|
|
|
|
this->nat_here = TRUE;
|
|
|
|
send_keepalive(this);
|
|
|
|
}
|
|
|
|
else
|
|
|
|
{
|
|
|
|
this->logger->log(this->logger, CONTROL,
|
|
|
|
"remote host is behind NAT, using NAT-T");
|
|
|
|
this->nat_there = TRUE;
|
2006-06-23 14:02:30 +00:00
|
|
|
}
|
2006-06-22 06:36:28 +00:00
|
|
|
}
|
|
|
|
|
2005-11-16 16:05:46 +00:00
|
|
|
/**
|
2005-12-02 11:38:56 +00:00
|
|
|
* Implementation of protected_ike_sa_t.destroy.
|
2005-11-16 16:05:46 +00:00
|
|
|
*/
|
2006-05-23 08:01:49 +00:00
|
|
|
static void destroy(private_ike_sa_t *this)
|
2005-11-16 16:05:46 +00:00
|
|
|
{
|
2006-02-16 09:55:07 +00:00
|
|
|
child_sa_t *child_sa;
|
2006-07-05 10:53:20 +00:00
|
|
|
transaction_t *transaction;
|
2006-02-16 09:55:07 +00:00
|
|
|
|
2006-07-03 06:27:45 +00:00
|
|
|
this->logger->log(this->logger, CONTROL|LEVEL2, "going to destroy IKE SA %llu:%llu, role %s",
|
2005-12-02 15:40:04 +00:00
|
|
|
this->ike_sa_id->get_initiator_spi(this->ike_sa_id),
|
|
|
|
this->ike_sa_id->get_responder_spi(this->ike_sa_id),
|
|
|
|
this->ike_sa_id->is_initiator(this->ike_sa_id) ? "initiator" : "responder");
|
2006-05-23 08:01:49 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
if (this->state == SA_ESTABLISHED)
|
2006-05-23 08:01:49 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->logger->log(this->logger, ERROR,
|
|
|
|
"destroying an established IKE SA without knowledge from remote peer!");
|
2006-05-23 08:01:49 +00:00
|
|
|
}
|
2005-11-21 16:41:24 +00:00
|
|
|
|
2006-02-16 09:55:07 +00:00
|
|
|
while (this->child_sas->remove_last(this->child_sas, (void**)&child_sa) == SUCCESS)
|
2005-11-16 16:05:46 +00:00
|
|
|
{
|
2006-02-16 09:55:07 +00:00
|
|
|
child_sa->destroy(child_sa);
|
2005-11-16 16:05:46 +00:00
|
|
|
}
|
2005-11-08 13:33:28 +00:00
|
|
|
this->child_sas->destroy(this->child_sas);
|
2006-03-20 15:43:26 +00:00
|
|
|
|
2006-07-05 10:53:20 +00:00
|
|
|
while (this->transaction_queue->remove_last(this->transaction_queue, (void**)&transaction) == SUCCESS)
|
|
|
|
{
|
|
|
|
transaction->destroy(transaction);
|
|
|
|
}
|
|
|
|
this->transaction_queue->destroy(this->transaction_queue);
|
|
|
|
if (this->transaction_in)
|
|
|
|
{
|
|
|
|
this->transaction_in->destroy(this->transaction_in);
|
|
|
|
}
|
|
|
|
if (this->transaction_in_next)
|
|
|
|
{
|
|
|
|
this->transaction_in_next->destroy(this->transaction_in_next);
|
|
|
|
}
|
|
|
|
if (this->transaction_out)
|
|
|
|
{
|
|
|
|
this->transaction_out->destroy(this->transaction_out);
|
|
|
|
}
|
|
|
|
if (this->crypter_in)
|
2005-11-22 15:38:41 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->crypter_in->destroy(this->crypter_in);
|
2005-11-22 15:38:41 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
if (this->crypter_out)
|
2005-11-22 15:38:41 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->crypter_out->destroy(this->crypter_out);
|
2005-11-22 15:38:41 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
if (this->signer_in)
|
2005-11-22 15:38:41 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->signer_in->destroy(this->signer_in);
|
2005-11-22 15:38:41 +00:00
|
|
|
}
|
2006-07-05 10:53:20 +00:00
|
|
|
if (this->signer_out)
|
2005-11-22 15:38:41 +00:00
|
|
|
{
|
2006-07-05 10:53:20 +00:00
|
|
|
this->signer_out->destroy(this->signer_out);
|
2005-11-22 15:38:41 +00:00
|
|
|
}
|
2006-03-20 15:43:26 +00:00
|
|
|
if (this->prf)
|
2005-11-22 15:38:41 +00:00
|
|
|
{
|
|
|
|
this->prf->destroy(this->prf);
|
|
|
|
}
|
2006-03-20 15:43:26 +00:00
|
|
|
if (this->child_prf)
|
2006-02-09 16:25:02 +00:00
|
|
|
{
|
|
|
|
this->child_prf->destroy(this->child_prf);
|
|
|
|
}
|
2006-03-20 15:43:26 +00:00
|
|
|
if (this->prf_auth_i)
|
2006-02-14 14:52:00 +00:00
|
|
|
{
|
|
|
|
this->prf_auth_i->destroy(this->prf_auth_i);
|
|
|
|
}
|
2006-03-20 15:43:26 +00:00
|
|
|
if (this->prf_auth_r)
|
2006-02-14 14:52:00 +00:00
|
|
|
{
|
|
|
|
this->prf_auth_r->destroy(this->prf_auth_r);
|
|
|
|
}
|
2006-03-20 15:43:26 +00:00
|
|
|
if (this->connection)
|
|
|
|
{
|
2006-05-29 11:09:45 +00:00
|
|
|
host_t *my_host, *other_host;
|
|
|
|
identification_t *my_id = NULL, *other_id = NULL;
|
|
|
|
my_host = this->connection->get_my_host(this->connection);
|
|
|
|
other_host = this->connection->get_other_host(this->connection);
|
|
|
|
if (this->policy)
|
|
|
|
{
|
|
|
|
my_id = this->policy->get_my_id(this->policy);
|
|
|
|
other_id = this->policy->get_other_id(this->policy);
|
|
|
|
}
|
2006-04-04 12:45:29 +00:00
|
|
|
|
2006-05-29 11:09:45 +00:00
|
|
|
this->logger->log(this->logger, AUDIT, "IKE_SA deleted between %s[%s]...%s[%s]",
|
|
|
|
my_host->get_address(my_host),
|
|
|
|
my_id ? my_id->get_string(my_id) : "(unknown)",
|
|
|
|
other_host->get_address(other_host),
|
|
|
|
other_id ? other_id->get_string(other_id) : "(unknown)");
|
2006-03-20 15:43:26 +00:00
|
|
|
this->connection->destroy(this->connection);
|
|
|
|
}
|
|
|
|
if (this->policy)
|
|
|
|
{
|
|
|
|
this->policy->destroy(this->policy);
|
|
|
|
}
|
|
|
|
this->ike_sa_id->destroy(this->ike_sa_id);
|
2006-04-10 08:07:38 +00:00
|
|
|
free(this);
|
2005-11-08 13:33:28 +00:00
|
|
|
}
|
|
|
|
|
|
|
|
/*
|
2005-12-07 09:03:34 +00:00
|
|
|
* Described in header.
|
2005-11-08 13:33:28 +00:00
|
|
|
*/
|
|
|
|
ike_sa_t * ike_sa_create(ike_sa_id_t *ike_sa_id)
|
|
|
|
{
|
2006-04-10 08:07:38 +00:00
|
|
|
private_ike_sa_t *this = malloc_thing(private_ike_sa_t);
|
2006-06-07 13:26:23 +00:00
|
|
|
|
2005-11-08 13:33:28 +00:00
|
|
|
/* Public functions */
|
2006-07-05 10:53:20 +00:00
|
|
|
this->public.get_state = (ike_sa_state_t(*)(ike_sa_t*)) get_state;
|
|
|
|
this->public.set_state = (void(*)(ike_sa_t*,ike_sa_state_t)) set_state;
|
|
|
|
this->public.process_message = (status_t(*)(ike_sa_t*, message_t*)) process_message;
|
|
|
|
this->public.initiate = (status_t(*)(ike_sa_t*,connection_t*)) initiate;
|
|
|
|
this->public.get_id = (ike_sa_id_t*(*)(ike_sa_t*)) get_id;
|
|
|
|
this->public.get_connection = (connection_t*(*)(ike_sa_t*)) get_connection;
|
|
|
|
this->public.retransmit_request = (status_t (*) (ike_sa_t *, u_int32_t)) retransmit_request;
|
|
|
|
this->public.log_status = (void (*) (ike_sa_t*,logger_t*,char*))log_status;
|
|
|
|
this->public.delete = (status_t(*)(ike_sa_t*))delete_;
|
|
|
|
this->public.destroy = (void(*)(ike_sa_t*))destroy;
|
|
|
|
this->public.send_dpd = (status_t (*)(ike_sa_t*)) send_dpd;
|
|
|
|
this->public.send_keepalive = (void (*)(ike_sa_t*)) send_keepalive;
|
|
|
|
this->public.get_prf = (prf_t *(*) (ike_sa_t *)) get_prf;
|
|
|
|
this->public.get_child_prf = (prf_t *(*) (ike_sa_t *)) get_child_prf;
|
|
|
|
this->public.get_prf_auth_i = (prf_t *(*) (ike_sa_t *)) get_prf_auth_i;
|
|
|
|
this->public.get_prf_auth_r = (prf_t *(*) (ike_sa_t *)) get_prf_auth_r;
|
|
|
|
this->public.set_connection = (void (*) (ike_sa_t *,connection_t *)) set_connection;
|
|
|
|
this->public.get_connection = (connection_t *(*) (ike_sa_t *)) get_connection;
|
|
|
|
this->public.set_policy = (void (*) (ike_sa_t *,policy_t *)) set_policy;
|
|
|
|
this->public.get_policy = (policy_t *(*) (ike_sa_t *)) get_policy;
|
|
|
|
this->public.build_transforms = (status_t (*) (ike_sa_t *,proposal_t*,diffie_hellman_t*,chunk_t,chunk_t,bool)) build_transforms;
|
2006-07-07 07:04:07 +00:00
|
|
|
this->public.add_child_sa = (void (*) (ike_sa_t*,child_sa_t*)) add_child_sa;
|
|
|
|
this->public.get_child_sa = (child_sa_t* (*)(ike_sa_t*,protocol_id_t,u_int32_t,bool)) get_child_sa;
|
|
|
|
this->public.rekey_child_sa = (status_t(*)(ike_sa_t*,protocol_id_t,u_int32_t)) rekey_child_sa;
|
|
|
|
this->public.delete_child_sa = (status_t(*)(ike_sa_t*,protocol_id_t,u_int32_t)) delete_child_sa;
|
|
|
|
this->public.destroy_child_sa = (status_t (*)(ike_sa_t*,protocol_id_t,u_int32_t))destroy_child_sa;
|
2006-07-05 10:53:20 +00:00
|
|
|
this->public.enable_natt = (void(*)(ike_sa_t*, bool)) enable_natt;
|
|
|
|
this->public.is_natt_enabled = (bool(*)(ike_sa_t*)) is_natt_enabled;
|
|
|
|
|
2005-11-08 13:33:28 +00:00
|
|
|
/* initialize private fields */
|
2006-04-10 08:07:38 +00:00
|
|
|
this->logger = logger_manager->get_logger(logger_manager, IKE_SA);
|
2005-11-28 20:29:47 +00:00
|
|
|
this->ike_sa_id = ike_sa_id->clone(ike_sa_id);
|
2005-11-08 13:33:28 +00:00
|
|
|
this->child_sas = linked_list_create();
|
2006-07-05 10:53:20 +00:00
|
|
|
this->crypter_in = NULL;
|
|
|
|
this->crypter_out = NULL;
|
|
|
|
this->signer_in = NULL;
|
|
|
|
this->signer_out = NULL;
|
2005-11-22 15:38:41 +00:00
|
|
|
this->prf = NULL;
|
2006-02-14 14:52:00 +00:00
|
|
|
this->prf_auth_i = NULL;
|
|
|
|
this->prf_auth_r = NULL;
|
2006-07-03 06:27:45 +00:00
|
|
|
this->child_prf = NULL;
|
2006-03-16 15:25:06 +00:00
|
|
|
this->connection = NULL;
|
|
|
|
this->policy = NULL;
|
2006-06-22 06:36:28 +00:00
|
|
|
this->nat_here = FALSE;
|
|
|
|
this->nat_there = FALSE;
|
2006-07-05 10:53:20 +00:00
|
|
|
this->transaction_queue = linked_list_create();
|
|
|
|
this->transaction_in = NULL;
|
|
|
|
this->transaction_in_next = NULL;
|
|
|
|
this->transaction_out = NULL;
|
|
|
|
this->state = SA_CREATED;
|
|
|
|
this->message_id_out = 0;
|
|
|
|
this->time_inbound = 0;
|
|
|
|
this->time_outbound = 0;
|
|
|
|
|
|
|
|
return &this->public;
|
2005-11-08 13:33:28 +00:00
|
|
|
}
|