1547 lines
39 KiB
C
1547 lines
39 KiB
C
/*
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* Copyright (C) 2012-2019 Tobias Brunner
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* HSR Hochschule fuer Technik Rapperswil
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*
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* Copyright (C) 2011 Martin Willi
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* Copyright (C) 2011 revosec AG
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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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/*
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* Copyright (C) 2012 Volker Rümelin
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#include "quick_mode.h"
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#include <string.h>
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#include <daemon.h>
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#include <sa/ikev1/keymat_v1.h>
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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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#include <encoding/payloads/id_payload.h>
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#include <encoding/payloads/payload.h>
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#include <sa/ikev1/tasks/informational.h>
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#include <sa/ikev1/tasks/quick_delete.h>
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#include <processing/jobs/inactivity_job.h>
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typedef struct private_quick_mode_t private_quick_mode_t;
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/**
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* Private members of a quick_mode_t task.
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*/
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struct private_quick_mode_t {
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/**
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* Public methods and task_t interface.
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*/
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quick_mode_t public;
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/**
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* Assigned IKE_SA.
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*/
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ike_sa_t *ike_sa;
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/**
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* TRUE if we are initiating quick mode
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*/
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bool initiator;
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/**
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* Traffic selector of initiator
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*/
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traffic_selector_t *tsi;
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/**
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* Traffic selector of responder
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*/
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traffic_selector_t *tsr;
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/**
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* Initiators nonce
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*/
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chunk_t nonce_i;
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/**
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* Responder nonce
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*/
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chunk_t nonce_r;
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/**
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* Initiators ESP SPI
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*/
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uint32_t spi_i;
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/**
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* Responder ESP SPI
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*/
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uint32_t spi_r;
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/**
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* Initiators IPComp CPI
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*/
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uint16_t cpi_i;
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/**
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* Responders IPComp CPI
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*/
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uint16_t cpi_r;
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/**
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* selected CHILD_SA proposal
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*/
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proposal_t *proposal;
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/**
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* Config of CHILD_SA to establish
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*/
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child_cfg_t *config;
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/**
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* CHILD_SA we are about to establish
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*/
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child_sa_t *child_sa;
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/**
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* IKEv1 keymat
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*/
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keymat_v1_t *keymat;
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/**
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* DH exchange, when PFS is in use
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*/
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diffie_hellman_t *dh;
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/**
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* Negotiated lifetime of new SA
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*/
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uint32_t lifetime;
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/**
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* Negotiated lifebytes of new SA
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*/
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uint64_t lifebytes;
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/**
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* Data collected to create the CHILD_SA
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*/
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child_sa_create_t child;
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/**
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* SPI of SA we rekey
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*/
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uint32_t rekey;
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/**
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* Delete old child after successful rekey
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*/
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bool delete;
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/**
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* Negotiated mode, tunnel or transport
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*/
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ipsec_mode_t mode;
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/*
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* SA protocol (ESP|AH) negotiated
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*/
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protocol_id_t proto;
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/**
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* Message ID of handled quick mode exchange
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*/
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uint32_t mid;
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/** states of quick mode */
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enum {
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QM_INIT,
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QM_NEGOTIATED,
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} state;
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};
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/**
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* Schedule inactivity timeout for CHILD_SA with reqid, if enabled
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*/
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static void schedule_inactivity_timeout(private_quick_mode_t *this)
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{
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uint32_t timeout;
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bool close_ike;
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timeout = this->config->get_inactivity(this->config);
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if (timeout)
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{
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close_ike = lib->settings->get_bool(lib->settings,
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"%s.inactivity_close_ike", FALSE, lib->ns);
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lib->scheduler->schedule_job(lib->scheduler, (job_t*)
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inactivity_job_create(this->child_sa->get_unique_id(this->child_sa),
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timeout, close_ike), timeout);
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}
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}
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/**
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* Check if we have a an address pool configured
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*/
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static bool have_pool(ike_sa_t *ike_sa)
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{
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enumerator_t *enumerator;
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peer_cfg_t *peer_cfg;
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char *pool;
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bool found = FALSE;
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peer_cfg = ike_sa->get_peer_cfg(ike_sa);
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if (peer_cfg)
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{
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enumerator = peer_cfg->create_pool_enumerator(peer_cfg);
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if (enumerator->enumerate(enumerator, &pool))
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{
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found = TRUE;
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}
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enumerator->destroy(enumerator);
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}
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return found;
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}
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/**
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* Get hosts to use for dynamic traffic selectors
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*/
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static linked_list_t *get_dynamic_hosts(ike_sa_t *ike_sa, bool local)
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{
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enumerator_t *enumerator;
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linked_list_t *list;
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host_t *host;
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list = linked_list_create();
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enumerator = ike_sa->create_virtual_ip_enumerator(ike_sa, local);
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while (enumerator->enumerate(enumerator, &host))
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{
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list->insert_last(list, host);
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}
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enumerator->destroy(enumerator);
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if (list->get_count(list) == 0)
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{ /* no virtual IPs assigned */
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if (local)
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{
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host = ike_sa->get_my_host(ike_sa);
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list->insert_last(list, host);
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}
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else if (!have_pool(ike_sa))
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{ /* use host only if we don't have a pool configured */
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host = ike_sa->get_other_host(ike_sa);
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list->insert_last(list, host);
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}
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}
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return list;
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}
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/**
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* Install negotiated CHILD_SA
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*/
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static bool install(private_quick_mode_t *this)
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{
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status_t status, status_i, status_o;
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chunk_t encr_i, encr_r, integ_i, integ_r;
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linked_list_t *tsi, *tsr, *my_ts, *other_ts;
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child_sa_t *old = NULL;
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this->child_sa->set_proposal(this->child_sa, this->proposal);
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this->child_sa->set_state(this->child_sa, CHILD_INSTALLING);
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this->child_sa->set_mode(this->child_sa, this->mode);
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if (this->cpi_i && this->cpi_r)
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{ /* DEFLATE is the only transform we currently support */
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this->child_sa->set_ipcomp(this->child_sa, IPCOMP_DEFLATE);
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}
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else
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{
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this->cpi_i = this->cpi_r = 0;
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}
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this->child_sa->set_protocol(this->child_sa,
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this->proposal->get_protocol(this->proposal));
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status_i = status_o = FAILED;
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encr_i = encr_r = integ_i = integ_r = chunk_empty;
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tsi = linked_list_create_with_items(this->tsi->clone(this->tsi), NULL);
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tsr = linked_list_create_with_items(this->tsr->clone(this->tsr), NULL);
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if (this->initiator)
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{
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charon->bus->narrow(charon->bus, this->child_sa,
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NARROW_INITIATOR_POST_AUTH, tsi, tsr);
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}
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else
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{
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charon->bus->narrow(charon->bus, this->child_sa,
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NARROW_RESPONDER_POST, tsr, tsi);
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}
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if (tsi->get_count(tsi) == 0 || tsr->get_count(tsr) == 0)
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{
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tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
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tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
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DBG1(DBG_IKE, "no acceptable traffic selectors found");
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return FALSE;
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}
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if (this->initiator)
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{
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this->child_sa->set_policies(this->child_sa, tsi, tsr);
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}
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else
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{
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this->child_sa->set_policies(this->child_sa, tsr, tsi);
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}
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tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
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tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
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if (this->keymat->derive_child_keys(this->keymat, this->proposal, this->dh,
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this->spi_i, this->spi_r, this->nonce_i, this->nonce_r,
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&encr_i, &integ_i, &encr_r, &integ_r))
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{
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if (this->initiator)
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{
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status_i = this->child_sa->install(this->child_sa,
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encr_r, integ_r, this->spi_i, this->cpi_i,
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this->initiator, TRUE, FALSE);
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status_o = this->child_sa->install(this->child_sa,
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encr_i, integ_i, this->spi_r, this->cpi_r,
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this->initiator, FALSE, FALSE);
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}
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else
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{
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status_i = this->child_sa->install(this->child_sa,
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encr_i, integ_i, this->spi_r, this->cpi_r,
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this->initiator, TRUE, FALSE);
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status_o = this->child_sa->install(this->child_sa,
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encr_r, integ_r, this->spi_i, this->cpi_i,
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this->initiator, FALSE, FALSE);
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}
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}
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if (status_i != SUCCESS || status_o != SUCCESS)
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{
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DBG1(DBG_IKE, "unable to install %s%s%sIPsec SA (SAD) in kernel",
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(status_i != SUCCESS) ? "inbound " : "",
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(status_i != SUCCESS && status_o != SUCCESS) ? "and ": "",
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(status_o != SUCCESS) ? "outbound " : "");
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status = FAILED;
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}
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else
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{
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status = this->child_sa->install_policies(this->child_sa);
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if (status != SUCCESS)
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{
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DBG1(DBG_IKE, "unable to install IPsec policies (SPD) in kernel");
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}
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else
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{
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charon->bus->child_derived_keys(charon->bus, this->child_sa,
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this->initiator, encr_i, encr_r,
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integ_i, integ_r);
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}
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}
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chunk_clear(&integ_i);
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chunk_clear(&integ_r);
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chunk_clear(&encr_i);
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chunk_clear(&encr_r);
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if (status != SUCCESS)
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{
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return FALSE;
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}
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charon->bus->child_keys(charon->bus, this->child_sa, this->initiator,
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this->dh, this->nonce_i, this->nonce_r);
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my_ts = linked_list_create_from_enumerator(
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this->child_sa->create_ts_enumerator(this->child_sa, TRUE));
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other_ts = linked_list_create_from_enumerator(
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this->child_sa->create_ts_enumerator(this->child_sa, FALSE));
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DBG0(DBG_IKE, "CHILD_SA %s{%d} established "
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"with SPIs %.8x_i %.8x_o and TS %#R === %#R",
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this->child_sa->get_name(this->child_sa),
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this->child_sa->get_unique_id(this->child_sa),
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ntohl(this->child_sa->get_spi(this->child_sa, TRUE)),
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ntohl(this->child_sa->get_spi(this->child_sa, FALSE)), my_ts, other_ts);
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my_ts->destroy(my_ts);
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other_ts->destroy(other_ts);
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this->child_sa->set_state(this->child_sa, CHILD_INSTALLED);
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this->ike_sa->add_child_sa(this->ike_sa, this->child_sa);
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if (this->rekey)
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{
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old = this->ike_sa->get_child_sa(this->ike_sa,
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this->proposal->get_protocol(this->proposal),
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this->rekey, TRUE);
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}
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if (old)
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{
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charon->bus->child_rekey(charon->bus, old, this->child_sa);
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/* rekeyed CHILD_SAs stay installed until they expire or are deleted
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* by the other peer */
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old->set_state(old, CHILD_REKEYED);
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/* as initiator we delete the CHILD_SA if configured to do so */
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if (this->initiator && this->delete)
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{
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this->ike_sa->queue_task(this->ike_sa,
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(task_t*)quick_delete_create(this->ike_sa,
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this->proposal->get_protocol(this->proposal),
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this->rekey, TRUE, FALSE));
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}
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}
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else
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{
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charon->bus->child_updown(charon->bus, this->child_sa, TRUE);
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}
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schedule_inactivity_timeout(this);
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this->child_sa = NULL;
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return TRUE;
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}
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/**
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* Generate and add NONCE
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*/
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static bool add_nonce(private_quick_mode_t *this, chunk_t *nonce,
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message_t *message)
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{
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nonce_payload_t *nonce_payload;
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nonce_gen_t *nonceg;
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nonceg = this->keymat->keymat.create_nonce_gen(&this->keymat->keymat);
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if (!nonceg)
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{
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DBG1(DBG_IKE, "no nonce generator found to create nonce");
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return FALSE;
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}
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if (!nonceg->allocate_nonce(nonceg, NONCE_SIZE, nonce))
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{
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DBG1(DBG_IKE, "nonce allocation failed");
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nonceg->destroy(nonceg);
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return FALSE;
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}
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nonceg->destroy(nonceg);
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nonce_payload = nonce_payload_create(PLV1_NONCE);
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nonce_payload->set_nonce(nonce_payload, *nonce);
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message->add_payload(message, &nonce_payload->payload_interface);
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return TRUE;
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}
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/**
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* Extract nonce from NONCE payload
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*/
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static bool get_nonce(private_quick_mode_t *this, chunk_t *nonce,
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message_t *message)
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{
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nonce_payload_t *nonce_payload;
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nonce_payload = (nonce_payload_t*)message->get_payload(message, PLV1_NONCE);
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if (!nonce_payload)
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{
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DBG1(DBG_IKE, "NONCE payload missing in message");
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return FALSE;
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}
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*nonce = nonce_payload->get_nonce(nonce_payload);
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return TRUE;
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}
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/**
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* Add KE payload to message
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*/
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static bool add_ke(private_quick_mode_t *this, message_t *message)
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{
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ke_payload_t *ke_payload;
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ke_payload = ke_payload_create_from_diffie_hellman(PLV1_KEY_EXCHANGE,
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this->dh);
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if (!ke_payload)
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{
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DBG1(DBG_IKE, "creating KE payload failed");
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return FALSE;
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}
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message->add_payload(message, &ke_payload->payload_interface);
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return TRUE;
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}
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/**
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* Get DH value from a KE payload
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*/
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static bool get_ke(private_quick_mode_t *this, message_t *message)
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{
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ke_payload_t *ke_payload;
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ke_payload = (ke_payload_t*)message->get_payload(message, PLV1_KEY_EXCHANGE);
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if (!ke_payload)
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{
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DBG1(DBG_IKE, "KE payload missing");
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return FALSE;
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}
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if (!this->dh->set_other_public_value(this->dh,
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ke_payload->get_key_exchange_data(ke_payload)))
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{
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DBG1(DBG_IKE, "unable to apply received KE value");
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return FALSE;
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}
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return TRUE;
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}
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|
|
/**
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* Select a traffic selector from configuration
|
|
*/
|
|
static traffic_selector_t* select_ts(private_quick_mode_t *this, bool local,
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linked_list_t *supplied)
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|
{
|
|
traffic_selector_t *ts;
|
|
linked_list_t *list, *hosts;
|
|
|
|
hosts = get_dynamic_hosts(this->ike_sa, local);
|
|
list = this->config->get_traffic_selectors(this->config,
|
|
local, supplied, hosts, TRUE);
|
|
hosts->destroy(hosts);
|
|
if (list->get_first(list, (void**)&ts) == SUCCESS)
|
|
{
|
|
ts = ts->clone(ts);
|
|
}
|
|
else
|
|
{
|
|
DBG1(DBG_IKE, "%s traffic selector missing in configuration",
|
|
local ? "local" : "remote");
|
|
ts = NULL;
|
|
}
|
|
list->destroy_offset(list, offsetof(traffic_selector_t, destroy));
|
|
return ts;
|
|
}
|
|
|
|
/**
|
|
* Add selected traffic selectors to message
|
|
*/
|
|
static void add_ts(private_quick_mode_t *this, message_t *message)
|
|
{
|
|
id_payload_t *id_payload;
|
|
|
|
id_payload = id_payload_create_from_ts(this->tsi);
|
|
message->add_payload(message, &id_payload->payload_interface);
|
|
id_payload = id_payload_create_from_ts(this->tsr);
|
|
message->add_payload(message, &id_payload->payload_interface);
|
|
}
|
|
|
|
/**
|
|
* Get traffic selectors from received message
|
|
*/
|
|
static bool get_ts(private_quick_mode_t *this, message_t *message)
|
|
{
|
|
traffic_selector_t *tsi = NULL, *tsr = NULL;
|
|
enumerator_t *enumerator;
|
|
id_payload_t *id_payload;
|
|
payload_t *payload;
|
|
host_t *hsi, *hsr;
|
|
bool first = TRUE;
|
|
|
|
enumerator = message->create_payload_enumerator(message);
|
|
while (enumerator->enumerate(enumerator, &payload))
|
|
{
|
|
if (payload->get_type(payload) == PLV1_ID)
|
|
{
|
|
id_payload = (id_payload_t*)payload;
|
|
|
|
if (first)
|
|
{
|
|
tsi = id_payload->get_ts(id_payload);
|
|
first = FALSE;
|
|
}
|
|
else
|
|
{
|
|
tsr = id_payload->get_ts(id_payload);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
|
|
/* create host2host selectors if ID payloads missing */
|
|
if (this->initiator)
|
|
{
|
|
hsi = this->ike_sa->get_my_host(this->ike_sa);
|
|
hsr = this->ike_sa->get_other_host(this->ike_sa);
|
|
}
|
|
else
|
|
{
|
|
hsr = this->ike_sa->get_my_host(this->ike_sa);
|
|
hsi = this->ike_sa->get_other_host(this->ike_sa);
|
|
}
|
|
if (!tsi)
|
|
{
|
|
tsi = traffic_selector_create_from_subnet(hsi->clone(hsi),
|
|
hsi->get_family(hsi) == AF_INET ? 32 : 128, 0, 0, 65535);
|
|
}
|
|
if (!tsr)
|
|
{
|
|
tsr = traffic_selector_create_from_subnet(hsr->clone(hsr),
|
|
hsr->get_family(hsr) == AF_INET ? 32 : 128, 0, 0, 65535);
|
|
}
|
|
if (this->mode == MODE_TRANSPORT && this->child.encap &&
|
|
(!tsi->is_host(tsi, hsi) || !tsr->is_host(tsr, hsr)))
|
|
{ /* change TS in case of a NAT in transport mode */
|
|
DBG2(DBG_IKE, "changing received traffic selectors %R=== %R due to NAT",
|
|
tsi, tsr);
|
|
tsi->set_address(tsi, hsi);
|
|
tsr->set_address(tsr, hsr);
|
|
}
|
|
|
|
if (this->initiator)
|
|
{
|
|
traffic_selector_t *tsisub, *tsrsub;
|
|
|
|
/* check if peer selection is valid */
|
|
tsisub = this->tsi->get_subset(this->tsi, tsi);
|
|
tsrsub = this->tsr->get_subset(this->tsr, tsr);
|
|
if (!tsisub || !tsrsub)
|
|
{
|
|
DBG1(DBG_IKE, "peer selected invalid traffic selectors: "
|
|
"%R for %R, %R for %R", tsi, this->tsi, tsr, this->tsr);
|
|
DESTROY_IF(tsisub);
|
|
DESTROY_IF(tsrsub);
|
|
tsi->destroy(tsi);
|
|
tsr->destroy(tsr);
|
|
return FALSE;
|
|
}
|
|
tsi->destroy(tsi);
|
|
tsr->destroy(tsr);
|
|
this->tsi->destroy(this->tsi);
|
|
this->tsr->destroy(this->tsr);
|
|
this->tsi = tsisub;
|
|
this->tsr = tsrsub;
|
|
}
|
|
else
|
|
{
|
|
this->tsi = tsi;
|
|
this->tsr = tsr;
|
|
}
|
|
return TRUE;
|
|
}
|
|
|
|
/**
|
|
* Get encap
|
|
*/
|
|
static encap_t get_encap(ike_sa_t* ike_sa, bool udp)
|
|
{
|
|
if (!udp)
|
|
{
|
|
return ENCAP_NONE;
|
|
}
|
|
if (ike_sa->supports_extension(ike_sa, EXT_NATT_DRAFT_02_03))
|
|
{
|
|
return ENCAP_UDP_DRAFT_00_03;
|
|
}
|
|
return ENCAP_UDP;
|
|
}
|
|
|
|
/**
|
|
* Get NAT-OA payload type (RFC 3947 or RFC 3947 drafts).
|
|
*/
|
|
static payload_type_t get_nat_oa_payload_type(ike_sa_t *ike_sa)
|
|
{
|
|
if (ike_sa->supports_extension(ike_sa, EXT_NATT_DRAFT_02_03))
|
|
{
|
|
return PLV1_NAT_OA_DRAFT_00_03;
|
|
}
|
|
return PLV1_NAT_OA;
|
|
}
|
|
|
|
/**
|
|
* Add NAT-OA payloads
|
|
*/
|
|
static void add_nat_oa_payloads(private_quick_mode_t *this, message_t *message)
|
|
{
|
|
identification_t *id;
|
|
id_payload_t *nat_oa;
|
|
host_t *init, *resp;
|
|
payload_type_t nat_oa_payload_type;
|
|
|
|
if (this->initiator)
|
|
{
|
|
init = message->get_source(message);
|
|
resp = message->get_destination(message);
|
|
}
|
|
else
|
|
{
|
|
init = message->get_destination(message);
|
|
resp = message->get_source(message);
|
|
}
|
|
|
|
nat_oa_payload_type = get_nat_oa_payload_type(this->ike_sa);
|
|
|
|
/* first NAT-OA is the initiator's address */
|
|
id = identification_create_from_sockaddr(init->get_sockaddr(init));
|
|
nat_oa = id_payload_create_from_identification(nat_oa_payload_type, id);
|
|
message->add_payload(message, (payload_t*)nat_oa);
|
|
id->destroy(id);
|
|
|
|
/* second NAT-OA is that of the responder */
|
|
id = identification_create_from_sockaddr(resp->get_sockaddr(resp));
|
|
nat_oa = id_payload_create_from_identification(nat_oa_payload_type, id);
|
|
message->add_payload(message, (payload_t*)nat_oa);
|
|
id->destroy(id);
|
|
}
|
|
|
|
/**
|
|
* Look up lifetimes
|
|
*/
|
|
static void get_lifetimes(private_quick_mode_t *this)
|
|
{
|
|
lifetime_cfg_t *lft;
|
|
|
|
lft = this->config->get_lifetime(this->config, TRUE);
|
|
if (lft->time.life)
|
|
{
|
|
this->lifetime = lft->time.life;
|
|
}
|
|
if (lft->bytes.life)
|
|
{
|
|
this->lifebytes = lft->bytes.life;
|
|
}
|
|
free(lft);
|
|
}
|
|
|
|
/**
|
|
* Check and apply lifetimes
|
|
*/
|
|
static void apply_lifetimes(private_quick_mode_t *this, sa_payload_t *sa_payload)
|
|
{
|
|
uint32_t lifetime;
|
|
uint64_t lifebytes;
|
|
|
|
lifetime = sa_payload->get_lifetime(sa_payload, this->proposal);
|
|
lifebytes = sa_payload->get_lifebytes(sa_payload, this->proposal);
|
|
if (this->lifetime != lifetime)
|
|
{
|
|
DBG1(DBG_IKE, "received %us lifetime, configured %us",
|
|
lifetime, this->lifetime);
|
|
this->lifetime = lifetime;
|
|
}
|
|
if (this->lifebytes != lifebytes)
|
|
{
|
|
DBG1(DBG_IKE, "received %llu lifebytes, configured %llu",
|
|
lifebytes, this->lifebytes);
|
|
this->lifebytes = lifebytes;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set the task ready to build notify error message
|
|
*/
|
|
static status_t send_notify(private_quick_mode_t *this, notify_type_t type)
|
|
{
|
|
notify_payload_t *notify;
|
|
|
|
notify = notify_payload_create_from_protocol_and_type(PLV1_NOTIFY,
|
|
this->proto, type);
|
|
notify->set_spi(notify, this->spi_i);
|
|
|
|
this->ike_sa->queue_task(this->ike_sa,
|
|
(task_t*)informational_create(this->ike_sa, notify));
|
|
/* cancel all active/passive tasks in favor of informational */
|
|
this->ike_sa->flush_queue(this->ike_sa,
|
|
this->initiator ? TASK_QUEUE_ACTIVE : TASK_QUEUE_PASSIVE);
|
|
return ALREADY_DONE;
|
|
}
|
|
|
|
/**
|
|
* Prepare a list of proposals from child_config containing only the specified
|
|
* DH group, unless it is set to MODP_NONE.
|
|
*/
|
|
static linked_list_t *get_proposals(private_quick_mode_t *this,
|
|
diffie_hellman_group_t group)
|
|
{
|
|
linked_list_t *list;
|
|
proposal_t *proposal;
|
|
enumerator_t *enumerator;
|
|
|
|
list = this->config->get_proposals(this->config, FALSE);
|
|
enumerator = list->create_enumerator(list);
|
|
while (enumerator->enumerate(enumerator, &proposal))
|
|
{
|
|
if (group != MODP_NONE)
|
|
{
|
|
if (!proposal->has_dh_group(proposal, group))
|
|
{
|
|
list->remove_at(list, enumerator);
|
|
proposal->destroy(proposal);
|
|
continue;
|
|
}
|
|
proposal->promote_dh_group(proposal, group);
|
|
}
|
|
proposal->set_spi(proposal, this->spi_i);
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
|
|
return list;
|
|
}
|
|
|
|
METHOD(task_t, build_i, status_t,
|
|
private_quick_mode_t *this, message_t *message)
|
|
{
|
|
switch (this->state)
|
|
{
|
|
case QM_INIT:
|
|
{
|
|
sa_payload_t *sa_payload;
|
|
linked_list_t *list, *tsi, *tsr;
|
|
proposal_t *proposal;
|
|
diffie_hellman_group_t group;
|
|
encap_t encap;
|
|
|
|
this->mode = this->config->get_mode(this->config);
|
|
this->child.if_id_in_def = this->ike_sa->get_if_id(this->ike_sa,
|
|
TRUE);
|
|
this->child.if_id_out_def = this->ike_sa->get_if_id(this->ike_sa,
|
|
FALSE);
|
|
this->child.encap = this->ike_sa->has_condition(this->ike_sa,
|
|
COND_NAT_ANY);
|
|
this->child_sa = child_sa_create(
|
|
this->ike_sa->get_my_host(this->ike_sa),
|
|
this->ike_sa->get_other_host(this->ike_sa),
|
|
this->config, &this->child);
|
|
|
|
if (this->child.encap && this->mode == MODE_TRANSPORT)
|
|
{
|
|
/* TODO-IKEv1: disable NAT-T for TRANSPORT mode by default? */
|
|
add_nat_oa_payloads(this, message);
|
|
}
|
|
|
|
if (this->config->has_option(this->config, OPT_IPCOMP))
|
|
{
|
|
this->cpi_i = this->child_sa->alloc_cpi(this->child_sa);
|
|
if (!this->cpi_i)
|
|
{
|
|
DBG1(DBG_IKE, "unable to allocate a CPI from kernel, "
|
|
"IPComp disabled");
|
|
}
|
|
}
|
|
|
|
list = this->config->get_proposals(this->config, FALSE);
|
|
if (list->get_first(list, (void**)&proposal) == SUCCESS)
|
|
{
|
|
this->proto = proposal->get_protocol(proposal);
|
|
}
|
|
list->destroy_offset(list, offsetof(proposal_t, destroy));
|
|
this->spi_i = this->child_sa->alloc_spi(this->child_sa, this->proto);
|
|
if (!this->spi_i)
|
|
{
|
|
DBG1(DBG_IKE, "allocating SPI from kernel failed");
|
|
return FAILED;
|
|
}
|
|
|
|
group = this->config->get_dh_group(this->config);
|
|
if (group != MODP_NONE)
|
|
{
|
|
proposal_t *proposal;
|
|
uint16_t preferred_group;
|
|
|
|
proposal = this->ike_sa->get_proposal(this->ike_sa);
|
|
proposal->get_algorithm(proposal, DIFFIE_HELLMAN_GROUP,
|
|
&preferred_group, NULL);
|
|
/* try the negotiated DH group from IKE_SA */
|
|
list = get_proposals(this, preferred_group);
|
|
if (list->get_count(list))
|
|
{
|
|
group = preferred_group;
|
|
}
|
|
else
|
|
{
|
|
/* fall back to the first configured DH group */
|
|
list->destroy(list);
|
|
list = get_proposals(this, group);
|
|
}
|
|
|
|
this->dh = this->keymat->keymat.create_dh(&this->keymat->keymat,
|
|
group);
|
|
if (!this->dh)
|
|
{
|
|
DBG1(DBG_IKE, "configured DH group %N not supported",
|
|
diffie_hellman_group_names, group);
|
|
list->destroy_offset(list, offsetof(proposal_t, destroy));
|
|
return FAILED;
|
|
}
|
|
}
|
|
else
|
|
{
|
|
list = get_proposals(this, MODP_NONE);
|
|
}
|
|
|
|
get_lifetimes(this);
|
|
encap = get_encap(this->ike_sa, this->child.encap);
|
|
sa_payload = sa_payload_create_from_proposals_v1(list,
|
|
this->lifetime, this->lifebytes, AUTH_NONE,
|
|
this->mode, encap, this->cpi_i);
|
|
list->destroy_offset(list, offsetof(proposal_t, destroy));
|
|
message->add_payload(message, &sa_payload->payload_interface);
|
|
|
|
if (!add_nonce(this, &this->nonce_i, message))
|
|
{
|
|
return FAILED;
|
|
}
|
|
if (group != MODP_NONE)
|
|
{
|
|
if (!add_ke(this, message))
|
|
{
|
|
return FAILED;
|
|
}
|
|
}
|
|
if (!this->tsi)
|
|
{
|
|
this->tsi = select_ts(this, TRUE, NULL);
|
|
}
|
|
if (!this->tsr)
|
|
{
|
|
this->tsr = select_ts(this, FALSE, NULL);
|
|
}
|
|
tsi = linked_list_create_with_items(this->tsi, NULL);
|
|
tsr = linked_list_create_with_items(this->tsr, NULL);
|
|
this->tsi = this->tsr = NULL;
|
|
charon->bus->narrow(charon->bus, this->child_sa,
|
|
NARROW_INITIATOR_PRE_AUTH, tsi, tsr);
|
|
tsi->remove_first(tsi, (void**)&this->tsi);
|
|
tsr->remove_first(tsr, (void**)&this->tsr);
|
|
tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
|
|
tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
|
|
if (!this->tsi || !this->tsr)
|
|
{
|
|
return FAILED;
|
|
}
|
|
add_ts(this, message);
|
|
return NEED_MORE;
|
|
}
|
|
case QM_NEGOTIATED:
|
|
{
|
|
return SUCCESS;
|
|
}
|
|
default:
|
|
return FAILED;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Check for notify errors, return TRUE if error found
|
|
*/
|
|
static bool has_notify_errors(private_quick_mode_t *this, message_t *message)
|
|
{
|
|
enumerator_t *enumerator;
|
|
payload_t *payload;
|
|
bool err = FALSE;
|
|
|
|
enumerator = message->create_payload_enumerator(message);
|
|
while (enumerator->enumerate(enumerator, &payload))
|
|
{
|
|
if (payload->get_type(payload) == PLV1_NOTIFY)
|
|
{
|
|
notify_payload_t *notify;
|
|
notify_type_t type;
|
|
|
|
notify = (notify_payload_t*)payload;
|
|
type = notify->get_notify_type(notify);
|
|
if (type < 16384)
|
|
{
|
|
|
|
DBG1(DBG_IKE, "received %N error notify",
|
|
notify_type_names, type);
|
|
err = TRUE;
|
|
}
|
|
else
|
|
{
|
|
DBG1(DBG_IKE, "received %N notify", notify_type_names, type);
|
|
}
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
|
|
return err;
|
|
}
|
|
|
|
/**
|
|
* Check if this is a rekey for an existing CHILD_SA, reuse reqid if so
|
|
*/
|
|
static void check_for_rekeyed_child(private_quick_mode_t *this, bool responder)
|
|
{
|
|
enumerator_t *enumerator, *policies;
|
|
traffic_selector_t *local, *remote, *my_ts, *other_ts;
|
|
child_sa_t *child_sa;
|
|
proposal_t *proposal;
|
|
char *name;
|
|
|
|
if (responder)
|
|
{
|
|
my_ts = this->tsr;
|
|
other_ts = this->tsi;
|
|
}
|
|
else
|
|
{
|
|
my_ts = this->tsi;
|
|
other_ts = this->tsr;
|
|
}
|
|
|
|
name = this->config->get_name(this->config);
|
|
enumerator = this->ike_sa->create_child_sa_enumerator(this->ike_sa);
|
|
while (!this->child.reqid && enumerator->enumerate(enumerator, &child_sa))
|
|
{
|
|
if (streq(child_sa->get_name(child_sa), name))
|
|
{
|
|
proposal = child_sa->get_proposal(child_sa);
|
|
switch (child_sa->get_state(child_sa))
|
|
{
|
|
case CHILD_INSTALLED:
|
|
case CHILD_REKEYING:
|
|
policies = child_sa->create_policy_enumerator(child_sa);
|
|
if (policies->enumerate(policies, &local, &remote) &&
|
|
local->equals(local, my_ts) &&
|
|
remote->equals(remote, other_ts) &&
|
|
this->proposal->equals(this->proposal, proposal))
|
|
{
|
|
this->rekey = child_sa->get_spi(child_sa, TRUE);
|
|
this->child.reqid = child_sa->get_reqid(child_sa);
|
|
this->child.mark_in = child_sa->get_mark(child_sa,
|
|
TRUE).value;
|
|
this->child.mark_out = child_sa->get_mark(child_sa,
|
|
FALSE).value;
|
|
this->child.if_id_in = child_sa->get_if_id(child_sa,
|
|
TRUE);
|
|
this->child.if_id_out = child_sa->get_if_id(child_sa,
|
|
FALSE);
|
|
child_sa->set_state(child_sa, CHILD_REKEYING);
|
|
DBG1(DBG_IKE, "detected rekeying of CHILD_SA %s{%u}",
|
|
child_sa->get_name(child_sa),
|
|
child_sa->get_unique_id(child_sa));
|
|
}
|
|
policies->destroy(policies);
|
|
break;
|
|
case CHILD_REKEYED:
|
|
default:
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
enumerator->destroy(enumerator);
|
|
}
|
|
|
|
METHOD(task_t, process_r, status_t,
|
|
private_quick_mode_t *this, message_t *message)
|
|
{
|
|
if (this->mid && this->mid != message->get_message_id(message))
|
|
{ /* not responsible for this quick mode exchange */
|
|
return INVALID_ARG;
|
|
}
|
|
|
|
switch (this->state)
|
|
{
|
|
case QM_INIT:
|
|
{
|
|
sa_payload_t *sa_payload;
|
|
linked_list_t *tsi, *tsr, *hostsi, *hostsr, *list = NULL;
|
|
peer_cfg_t *peer_cfg;
|
|
uint16_t group;
|
|
proposal_selection_flag_t flags = 0;
|
|
|
|
sa_payload = (sa_payload_t*)message->get_payload(message,
|
|
PLV1_SECURITY_ASSOCIATION);
|
|
if (!sa_payload)
|
|
{
|
|
DBG1(DBG_IKE, "sa payload missing");
|
|
return send_notify(this, INVALID_PAYLOAD_TYPE);
|
|
}
|
|
|
|
this->mode = sa_payload->get_encap_mode(sa_payload,
|
|
&this->child.encap);
|
|
|
|
if (!get_ts(this, message))
|
|
{
|
|
return FAILED;
|
|
}
|
|
peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa);
|
|
tsi = linked_list_create_with_items(this->tsi, NULL);
|
|
tsr = linked_list_create_with_items(this->tsr, NULL);
|
|
this->tsi = this->tsr = NULL;
|
|
hostsi = get_dynamic_hosts(this->ike_sa, FALSE);
|
|
hostsr = get_dynamic_hosts(this->ike_sa, TRUE);
|
|
this->config = peer_cfg->select_child_cfg(peer_cfg, tsr, tsi,
|
|
hostsr, hostsi);
|
|
hostsi->destroy(hostsi);
|
|
hostsr->destroy(hostsr);
|
|
if (this->config)
|
|
{
|
|
this->tsi = select_ts(this, FALSE, tsi);
|
|
this->tsr = select_ts(this, TRUE, tsr);
|
|
}
|
|
if (!this->config || !this->tsi || !this->tsr ||
|
|
this->mode != this->config->get_mode(this->config))
|
|
{
|
|
DBG1(DBG_IKE, "no matching CHILD_SA config found for "
|
|
"%#R === %#R", tsi, tsr);
|
|
tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
|
|
tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
|
|
return send_notify(this, INVALID_ID_INFORMATION);
|
|
}
|
|
tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
|
|
tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
|
|
|
|
if (this->config->has_option(this->config, OPT_IPCOMP))
|
|
{
|
|
list = sa_payload->get_ipcomp_proposals(sa_payload,
|
|
&this->cpi_i);
|
|
if (!list->get_count(list))
|
|
{
|
|
DBG1(DBG_IKE, "expected IPComp proposal but peer did "
|
|
"not send one, IPComp disabled");
|
|
this->cpi_i = 0;
|
|
}
|
|
}
|
|
if (!list || !list->get_count(list))
|
|
{
|
|
DESTROY_IF(list);
|
|
list = sa_payload->get_proposals(sa_payload);
|
|
}
|
|
if (!this->ike_sa->supports_extension(this->ike_sa, EXT_STRONGSWAN)
|
|
&& !lib->settings->get_bool(lib->settings,
|
|
"%s.accept_private_algs", FALSE, lib->ns))
|
|
{
|
|
flags |= PROPOSAL_SKIP_PRIVATE;
|
|
}
|
|
if (!lib->settings->get_bool(lib->settings,
|
|
"%s.prefer_configured_proposals", TRUE, lib->ns))
|
|
{
|
|
flags |= PROPOSAL_PREFER_SUPPLIED;
|
|
}
|
|
this->proposal = this->config->select_proposal(this->config, list,
|
|
flags);
|
|
list->destroy_offset(list, offsetof(proposal_t, destroy));
|
|
|
|
if (!this->proposal)
|
|
{
|
|
DBG1(DBG_IKE, "no matching proposal found, sending %N",
|
|
notify_type_names, NO_PROPOSAL_CHOSEN);
|
|
return send_notify(this, NO_PROPOSAL_CHOSEN);
|
|
}
|
|
this->spi_i = this->proposal->get_spi(this->proposal);
|
|
|
|
get_lifetimes(this);
|
|
apply_lifetimes(this, sa_payload);
|
|
|
|
if (!get_nonce(this, &this->nonce_i, message))
|
|
{
|
|
return send_notify(this, INVALID_PAYLOAD_TYPE);
|
|
}
|
|
|
|
if (this->proposal->get_algorithm(this->proposal,
|
|
DIFFIE_HELLMAN_GROUP, &group, NULL))
|
|
{
|
|
this->dh = this->keymat->keymat.create_dh(&this->keymat->keymat,
|
|
group);
|
|
if (!this->dh)
|
|
{
|
|
DBG1(DBG_IKE, "negotiated DH group %N not supported",
|
|
diffie_hellman_group_names, group);
|
|
return send_notify(this, INVALID_KEY_INFORMATION);
|
|
}
|
|
if (!get_ke(this, message))
|
|
{
|
|
return send_notify(this, INVALID_PAYLOAD_TYPE);
|
|
}
|
|
}
|
|
|
|
check_for_rekeyed_child(this, TRUE);
|
|
this->child.if_id_in_def = this->ike_sa->get_if_id(this->ike_sa,
|
|
TRUE);
|
|
this->child.if_id_out_def = this->ike_sa->get_if_id(this->ike_sa,
|
|
FALSE);
|
|
this->child_sa = child_sa_create(
|
|
this->ike_sa->get_my_host(this->ike_sa),
|
|
this->ike_sa->get_other_host(this->ike_sa),
|
|
this->config, &this->child);
|
|
|
|
tsi = linked_list_create_with_items(this->tsi, NULL);
|
|
tsr = linked_list_create_with_items(this->tsr, NULL);
|
|
this->tsi = this->tsr = NULL;
|
|
charon->bus->narrow(charon->bus, this->child_sa,
|
|
NARROW_RESPONDER, tsr, tsi);
|
|
if (tsi->remove_first(tsi, (void**)&this->tsi) != SUCCESS ||
|
|
tsr->remove_first(tsr, (void**)&this->tsr) != SUCCESS)
|
|
{
|
|
tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
|
|
tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
|
|
return send_notify(this, INVALID_ID_INFORMATION);
|
|
}
|
|
tsi->destroy_offset(tsi, offsetof(traffic_selector_t, destroy));
|
|
tsr->destroy_offset(tsr, offsetof(traffic_selector_t, destroy));
|
|
|
|
return NEED_MORE;
|
|
}
|
|
case QM_NEGOTIATED:
|
|
{
|
|
if (has_notify_errors(this, message))
|
|
{
|
|
return SUCCESS;
|
|
}
|
|
if (message->get_exchange_type(message) == INFORMATIONAL_V1)
|
|
{
|
|
if (message->get_payload(message, PLV1_DELETE))
|
|
{
|
|
/* If the DELETE for a Quick Mode follows immediately
|
|
* after rekeying, we might receive it before the
|
|
* third completing Quick Mode message. Ignore it, as
|
|
* it gets handled by a separately queued delete task. */
|
|
return NEED_MORE;
|
|
}
|
|
return SUCCESS;
|
|
}
|
|
if (!this->rekey)
|
|
{
|
|
/* do another check in case SAs were created since we handled
|
|
* the QM request, this is consistent with the rekey check
|
|
* before installation on the initiator */
|
|
check_for_rekeyed_child(this, TRUE);
|
|
if (this->rekey)
|
|
{
|
|
this->child_sa->destroy(this->child_sa);
|
|
this->child_sa = child_sa_create(
|
|
this->ike_sa->get_my_host(this->ike_sa),
|
|
this->ike_sa->get_other_host(this->ike_sa),
|
|
this->config, &this->child);
|
|
}
|
|
}
|
|
if (!install(this))
|
|
{
|
|
ike_sa_t *ike_sa = this->ike_sa;
|
|
task_t *task;
|
|
|
|
task = (task_t*)quick_delete_create(this->ike_sa,
|
|
this->proposal->get_protocol(this->proposal),
|
|
this->spi_i, TRUE, TRUE);
|
|
/* flush_queue() destroys the current task */
|
|
ike_sa->flush_queue(ike_sa, TASK_QUEUE_PASSIVE);
|
|
ike_sa->queue_task(ike_sa, task);
|
|
return ALREADY_DONE;
|
|
}
|
|
return SUCCESS;
|
|
}
|
|
default:
|
|
return FAILED;
|
|
}
|
|
}
|
|
|
|
METHOD(task_t, build_r, status_t,
|
|
private_quick_mode_t *this, message_t *message)
|
|
{
|
|
if (this->mid && this->mid != message->get_message_id(message))
|
|
{ /* not responsible for this quick mode exchange */
|
|
return INVALID_ARG;
|
|
}
|
|
|
|
switch (this->state)
|
|
{
|
|
case QM_INIT:
|
|
{
|
|
sa_payload_t *sa_payload;
|
|
encap_t encap;
|
|
|
|
this->proto = this->proposal->get_protocol(this->proposal);
|
|
this->spi_r = this->child_sa->alloc_spi(this->child_sa, this->proto);
|
|
if (!this->spi_r)
|
|
{
|
|
DBG1(DBG_IKE, "allocating SPI from kernel failed");
|
|
return send_notify(this, NO_PROPOSAL_CHOSEN);
|
|
}
|
|
this->proposal->set_spi(this->proposal, this->spi_r);
|
|
|
|
if (this->cpi_i)
|
|
{
|
|
this->cpi_r = this->child_sa->alloc_cpi(this->child_sa);
|
|
if (!this->cpi_r)
|
|
{
|
|
DBG1(DBG_IKE, "unable to allocate a CPI from "
|
|
"kernel, IPComp disabled");
|
|
return send_notify(this, NO_PROPOSAL_CHOSEN);
|
|
}
|
|
}
|
|
|
|
if (this->child.encap && this->mode == MODE_TRANSPORT)
|
|
{
|
|
/* TODO-IKEv1: disable NAT-T for TRANSPORT mode by default? */
|
|
add_nat_oa_payloads(this, message);
|
|
}
|
|
|
|
encap = get_encap(this->ike_sa, this->child.encap);
|
|
sa_payload = sa_payload_create_from_proposal_v1(this->proposal,
|
|
this->lifetime, this->lifebytes, AUTH_NONE,
|
|
this->mode, encap, this->cpi_r);
|
|
message->add_payload(message, &sa_payload->payload_interface);
|
|
|
|
if (!add_nonce(this, &this->nonce_r, message))
|
|
{
|
|
return FAILED;
|
|
}
|
|
if (this->dh)
|
|
{
|
|
if (!add_ke(this, message))
|
|
{
|
|
return FAILED;
|
|
}
|
|
}
|
|
|
|
add_ts(this, message);
|
|
|
|
this->state = QM_NEGOTIATED;
|
|
this->mid = message->get_message_id(message);
|
|
return NEED_MORE;
|
|
}
|
|
case QM_NEGOTIATED:
|
|
if (message->get_exchange_type(message) == INFORMATIONAL_V1)
|
|
{
|
|
/* skip INFORMATIONAL response if we received a INFORMATIONAL
|
|
* delete, see process_r() */
|
|
return ALREADY_DONE;
|
|
}
|
|
/* fall */
|
|
default:
|
|
return FAILED;
|
|
}
|
|
}
|
|
|
|
METHOD(task_t, process_i, status_t,
|
|
private_quick_mode_t *this, message_t *message)
|
|
{
|
|
switch (this->state)
|
|
{
|
|
case QM_INIT:
|
|
{
|
|
sa_payload_t *sa_payload;
|
|
linked_list_t *list = NULL;
|
|
proposal_selection_flag_t flags = 0;
|
|
|
|
sa_payload = (sa_payload_t*)message->get_payload(message,
|
|
PLV1_SECURITY_ASSOCIATION);
|
|
if (!sa_payload)
|
|
{
|
|
DBG1(DBG_IKE, "sa payload missing");
|
|
return send_notify(this, NO_PROPOSAL_CHOSEN);
|
|
}
|
|
if (this->cpi_i)
|
|
{
|
|
list = sa_payload->get_ipcomp_proposals(sa_payload,
|
|
&this->cpi_r);
|
|
if (!list->get_count(list))
|
|
{
|
|
DBG1(DBG_IKE, "peer did not accept our IPComp proposal, "
|
|
"IPComp disabled");
|
|
this->cpi_i = 0;
|
|
}
|
|
}
|
|
if (!list || !list->get_count(list))
|
|
{
|
|
DESTROY_IF(list);
|
|
list = sa_payload->get_proposals(sa_payload);
|
|
}
|
|
if (!this->ike_sa->supports_extension(this->ike_sa, EXT_STRONGSWAN)
|
|
&& !lib->settings->get_bool(lib->settings,
|
|
"%s.accept_private_algs", FALSE, lib->ns))
|
|
{
|
|
flags |= PROPOSAL_SKIP_PRIVATE;
|
|
}
|
|
this->proposal = this->config->select_proposal(this->config, list,
|
|
flags);
|
|
list->destroy_offset(list, offsetof(proposal_t, destroy));
|
|
if (!this->proposal)
|
|
{
|
|
DBG1(DBG_IKE, "no matching proposal found");
|
|
return send_notify(this, NO_PROPOSAL_CHOSEN);
|
|
}
|
|
this->spi_r = this->proposal->get_spi(this->proposal);
|
|
|
|
apply_lifetimes(this, sa_payload);
|
|
|
|
if (!get_nonce(this, &this->nonce_r, message))
|
|
{
|
|
return send_notify(this, INVALID_PAYLOAD_TYPE);
|
|
}
|
|
if (this->dh && !get_ke(this, message))
|
|
{
|
|
return send_notify(this, INVALID_KEY_INFORMATION);
|
|
}
|
|
if (!get_ts(this, message))
|
|
{
|
|
return send_notify(this, INVALID_PAYLOAD_TYPE);
|
|
}
|
|
check_for_rekeyed_child(this, FALSE);
|
|
if (!install(this))
|
|
{
|
|
return send_notify(this, NO_PROPOSAL_CHOSEN);
|
|
}
|
|
this->state = QM_NEGOTIATED;
|
|
return NEED_MORE;
|
|
}
|
|
default:
|
|
return FAILED;
|
|
}
|
|
}
|
|
|
|
METHOD(task_t, get_type, task_type_t,
|
|
private_quick_mode_t *this)
|
|
{
|
|
return TASK_QUICK_MODE;
|
|
}
|
|
|
|
METHOD(quick_mode_t, get_mid, uint32_t,
|
|
private_quick_mode_t *this)
|
|
{
|
|
return this->mid;
|
|
}
|
|
|
|
METHOD(quick_mode_t, use_reqid, void,
|
|
private_quick_mode_t *this, uint32_t reqid)
|
|
{
|
|
this->child.reqid = reqid;
|
|
}
|
|
|
|
METHOD(quick_mode_t, use_marks, void,
|
|
private_quick_mode_t *this, uint32_t in, uint32_t out)
|
|
{
|
|
this->child.mark_in = in;
|
|
this->child.mark_out = out;
|
|
}
|
|
|
|
METHOD(quick_mode_t, use_if_ids, void,
|
|
private_quick_mode_t *this, uint32_t in, uint32_t out)
|
|
{
|
|
this->child.if_id_in = in;
|
|
this->child.if_id_out = out;
|
|
}
|
|
|
|
METHOD(quick_mode_t, rekey, void,
|
|
private_quick_mode_t *this, uint32_t spi)
|
|
{
|
|
this->rekey = spi;
|
|
}
|
|
|
|
METHOD(task_t, migrate, void,
|
|
private_quick_mode_t *this, ike_sa_t *ike_sa)
|
|
{
|
|
chunk_free(&this->nonce_i);
|
|
chunk_free(&this->nonce_r);
|
|
DESTROY_IF(this->tsi);
|
|
DESTROY_IF(this->tsr);
|
|
DESTROY_IF(this->proposal);
|
|
DESTROY_IF(this->child_sa);
|
|
DESTROY_IF(this->dh);
|
|
|
|
this->ike_sa = ike_sa;
|
|
this->keymat = (keymat_v1_t*)ike_sa->get_keymat(ike_sa);
|
|
this->state = QM_INIT;
|
|
this->mid = 0;
|
|
this->tsi = NULL;
|
|
this->tsr = NULL;
|
|
this->proposal = NULL;
|
|
this->child_sa = NULL;
|
|
this->dh = NULL;
|
|
this->spi_i = 0;
|
|
this->spi_r = 0;
|
|
this->child = (child_sa_create_t){};
|
|
|
|
if (!this->initiator)
|
|
{
|
|
DESTROY_IF(this->config);
|
|
this->config = NULL;
|
|
}
|
|
}
|
|
|
|
METHOD(task_t, destroy, void,
|
|
private_quick_mode_t *this)
|
|
{
|
|
chunk_free(&this->nonce_i);
|
|
chunk_free(&this->nonce_r);
|
|
DESTROY_IF(this->tsi);
|
|
DESTROY_IF(this->tsr);
|
|
DESTROY_IF(this->proposal);
|
|
DESTROY_IF(this->child_sa);
|
|
DESTROY_IF(this->config);
|
|
DESTROY_IF(this->dh);
|
|
free(this);
|
|
}
|
|
|
|
/*
|
|
* Described in header.
|
|
*/
|
|
quick_mode_t *quick_mode_create(ike_sa_t *ike_sa, child_cfg_t *config,
|
|
traffic_selector_t *tsi, traffic_selector_t *tsr)
|
|
{
|
|
private_quick_mode_t *this;
|
|
|
|
INIT(this,
|
|
.public = {
|
|
.task = {
|
|
.get_type = _get_type,
|
|
.migrate = _migrate,
|
|
.destroy = _destroy,
|
|
},
|
|
.get_mid = _get_mid,
|
|
.use_reqid = _use_reqid,
|
|
.use_marks = _use_marks,
|
|
.use_if_ids = _use_if_ids,
|
|
.rekey = _rekey,
|
|
},
|
|
.ike_sa = ike_sa,
|
|
.initiator = config != NULL,
|
|
.config = config,
|
|
.keymat = (keymat_v1_t*)ike_sa->get_keymat(ike_sa),
|
|
.state = QM_INIT,
|
|
.tsi = tsi ? tsi->clone(tsi) : NULL,
|
|
.tsr = tsr ? tsr->clone(tsr) : NULL,
|
|
.proto = PROTO_ESP,
|
|
.delete = lib->settings->get_bool(lib->settings,
|
|
"%s.delete_rekeyed", FALSE, lib->ns),
|
|
);
|
|
|
|
if (config)
|
|
{
|
|
this->public.task.build = _build_i;
|
|
this->public.task.process = _process_i;
|
|
}
|
|
else
|
|
{
|
|
this->public.task.build = _build_r;
|
|
this->public.task.process = _process_r;
|
|
}
|
|
|
|
return &this->public;
|
|
}
|