Imported Upstream version 5.0.1

1 files changed, 0 insertions, 587 deletions

diff --git a/src/libcharon/sa/tasks/ike_init.c b/src/libcharon/sa/tasks/ike_init.c
deleted file mode 100644
index dd8a4b086..000000000
--- a/src/libcharon/sa/tasks/ike_init.c
+++ /dev/null
@@ -1,587 +0,0 @@
-/*
- * Copyright (C) 2008-2009 Tobias Brunner
- * Copyright (C) 2005-2008 Martin Willi
- * Copyright (C) 2005 Jan Hutter
- * Hochschule fuer Technik Rapperswil
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the
- * Free Software Foundation; either version 2 of the License, or (at your
- * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
- *
- * This program is distributed in the hope that it will be useful, but
- * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
- * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
- * for more details.
- */
-
-#include "ike_init.h"
-
-#include <string.h>
-
-#include <daemon.h>
-#include <crypto/diffie_hellman.h>
-#include <encoding/payloads/sa_payload.h>
-#include <encoding/payloads/ke_payload.h>
-#include <encoding/payloads/nonce_payload.h>
-
-/** maximum retries to do with cookies/other dh groups */
-#define MAX_RETRIES 5
-
-typedef struct private_ike_init_t private_ike_init_t;
-
-/**
- * Private members of a ike_init_t task.
- */
-struct private_ike_init_t {
-
-	/**
-	 * Public methods and task_t interface.
-	 */
-	ike_init_t public;
-
-	/**
-	 * Assigned IKE_SA.
-	 */
-	ike_sa_t *ike_sa;
-
-	/**
-	 * Are we the initiator?
-	 */
-	bool initiator;
-
-	/**
-	 * IKE config to establish
-	 */
-	ike_cfg_t *config;
-
-	/**
-	 * diffie hellman group to use
-	 */
-	diffie_hellman_group_t dh_group;
-
-	/**
-	 * diffie hellman key exchange
-	 */
-	diffie_hellman_t *dh;
-
-	/**
-	 * Keymat derivation (from IKE_SA)
-	 */
-	keymat_t *keymat;
-
-	/**
-	 * nonce chosen by us
-	 */
-	chunk_t my_nonce;
-
-	/**
-	 * nonce chosen by peer
-	 */
-	chunk_t other_nonce;
-
-	/**
-	 * Negotiated proposal used for IKE_SA
-	 */
-	proposal_t *proposal;
-
-	/**
-	 * Old IKE_SA which gets rekeyed
-	 */
-	ike_sa_t *old_sa;
-
-	/**
-	 * cookie received from responder
-	 */
-	chunk_t cookie;
-
-	/**
-	 * retries done so far after failure (cookie or bad dh group)
-	 */
-	u_int retry;
-};
-
-/**
- * build the payloads for the message
- */
-static void build_payloads(private_ike_init_t *this, message_t *message)
-{
-	sa_payload_t *sa_payload;
-	ke_payload_t *ke_payload;
-	nonce_payload_t *nonce_payload;
-	linked_list_t *proposal_list;
-	ike_sa_id_t *id;
-	proposal_t *proposal;
-	enumerator_t *enumerator;
-
-	id = this->ike_sa->get_id(this->ike_sa);
-
-	this->config = this->ike_sa->get_ike_cfg(this->ike_sa);
-
-	if (this->initiator)
-	{
-		proposal_list = this->config->get_proposals(this->config);
-		if (this->old_sa)
-		{
-			/* include SPI of new IKE_SA when we are rekeying */
-			enumerator = proposal_list->create_enumerator(proposal_list);
-			while (enumerator->enumerate(enumerator, (void**)&proposal))
-			{
-				proposal->set_spi(proposal, id->get_initiator_spi(id));
-			}
-			enumerator->destroy(enumerator);
-		}
-
-		sa_payload = sa_payload_create_from_proposal_list(proposal_list);
-		proposal_list->destroy_offset(proposal_list, offsetof(proposal_t, destroy));
-	}
-	else
-	{
-		if (this->old_sa)
-		{
-			/* include SPI of new IKE_SA when we are rekeying */
-			this->proposal->set_spi(this->proposal, id->get_responder_spi(id));
-		}
-		sa_payload = sa_payload_create_from_proposal(this->proposal);
-	}
-	message->add_payload(message, (payload_t*)sa_payload);
-
-	nonce_payload = nonce_payload_create();
-	nonce_payload->set_nonce(nonce_payload, this->my_nonce);
-	ke_payload = ke_payload_create_from_diffie_hellman(this->dh);
-
-	if (this->old_sa)
-	{	/* payload order differs if we are rekeying */
-		message->add_payload(message, (payload_t*)nonce_payload);
-		message->add_payload(message, (payload_t*)ke_payload);
-	}
-	else
-	{
-		message->add_payload(message, (payload_t*)ke_payload);
-		message->add_payload(message, (payload_t*)nonce_payload);
-	}
-}
-
-/**
- * Read payloads from message
- */
-static void process_payloads(private_ike_init_t *this, message_t *message)
-{
-	enumerator_t *enumerator;
-	payload_t *payload;
-
-	enumerator = message->create_payload_enumerator(message);
-	while (enumerator->enumerate(enumerator, &payload))
-	{
-		switch (payload->get_type(payload))
-		{
-			case SECURITY_ASSOCIATION:
-			{
-				sa_payload_t *sa_payload = (sa_payload_t*)payload;
-				linked_list_t *proposal_list;
-				bool private;
-
-				proposal_list = sa_payload->get_proposals(sa_payload);
-				private = this->ike_sa->supports_extension(this->ike_sa,
-														   EXT_STRONGSWAN);
-				this->proposal = this->config->select_proposal(this->config,
-														proposal_list, private);
-				proposal_list->destroy_offset(proposal_list,
-											  offsetof(proposal_t, destroy));
-				break;
-			}
-			case KEY_EXCHANGE:
-			{
-				ke_payload_t *ke_payload = (ke_payload_t*)payload;
-
-				this->dh_group = ke_payload->get_dh_group_number(ke_payload);
-				if (!this->initiator)
-				{
-					this->dh = this->keymat->create_dh(this->keymat,
-													   this->dh_group);
-				}
-				if (this->dh)
-				{
-					this->dh->set_other_public_value(this->dh,
-								ke_payload->get_key_exchange_data(ke_payload));
-				}
-				break;
-			}
-			case NONCE:
-			{
-				nonce_payload_t *nonce_payload = (nonce_payload_t*)payload;
-
-				this->other_nonce = nonce_payload->get_nonce(nonce_payload);
-				break;
-			}
-			default:
-				break;
-		}
-	}
-	enumerator->destroy(enumerator);
-}
-
-METHOD(task_t, build_i, status_t,
-	private_ike_init_t *this, message_t *message)
-{
-	rng_t *rng;
-
-	this->config = this->ike_sa->get_ike_cfg(this->ike_sa);
-	DBG0(DBG_IKE, "initiating IKE_SA %s[%d] to %H",
-		 this->ike_sa->get_name(this->ike_sa),
-		 this->ike_sa->get_unique_id(this->ike_sa),
-		 this->ike_sa->get_other_host(this->ike_sa));
-	this->ike_sa->set_state(this->ike_sa, IKE_CONNECTING);
-
-	if (this->retry >= MAX_RETRIES)
-	{
-		DBG1(DBG_IKE, "giving up after %d retries", MAX_RETRIES);
-		return FAILED;
-	}
-
-	/* if the DH group is set via use_dh_group(), we already have a DH object */
-	if (!this->dh)
-	{
-		this->dh_group = this->config->get_dh_group(this->config);
-		this->dh = this->keymat->create_dh(this->keymat, this->dh_group);
-		if (!this->dh)
-		{
-			DBG1(DBG_IKE, "configured DH group %N not supported",
-				diffie_hellman_group_names, this->dh_group);
-			return FAILED;
-		}
-	}
-
-	/* generate nonce only when we are trying the first time */
-	if (this->my_nonce.ptr == NULL)
-	{
-		rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK);
-		if (!rng)
-		{
-			DBG1(DBG_IKE, "error generating nonce");
-			return FAILED;
-		}
-		rng->allocate_bytes(rng, NONCE_SIZE, &this->my_nonce);
-		rng->destroy(rng);
-	}
-
-	if (this->cookie.ptr)
-	{
-		message->add_notify(message, FALSE, COOKIE, this->cookie);
-	}
-
-	build_payloads(this, message);
-
-#ifdef ME
-	{
-		chunk_t connect_id = this->ike_sa->get_connect_id(this->ike_sa);
-		if (connect_id.ptr)
-		{
-			message->add_notify(message, FALSE, ME_CONNECTID, connect_id);
-		}
-	}
-#endif /* ME */
-
-	return NEED_MORE;
-}
-
-METHOD(task_t, process_r,  status_t,
-	private_ike_init_t *this, message_t *message)
-{
-	rng_t *rng;
-
-	this->config = this->ike_sa->get_ike_cfg(this->ike_sa);
-	DBG0(DBG_IKE, "%H is initiating an IKE_SA", message->get_source(message));
-	this->ike_sa->set_state(this->ike_sa, IKE_CONNECTING);
-
-	rng = lib->crypto->create_rng(lib->crypto, RNG_WEAK);
-	if (!rng)
-	{
-		DBG1(DBG_IKE, "error generating nonce");
-		return FAILED;
-	}
-	rng->allocate_bytes(rng, NONCE_SIZE, &this->my_nonce);
-	rng->destroy(rng);
-
-#ifdef ME
-	{
-		notify_payload_t *notify = message->get_notify(message, ME_CONNECTID);
-		if (notify)
-		{
-			chunk_t connect_id = notify->get_notification_data(notify);
-			DBG2(DBG_IKE, "received ME_CONNECTID %#B", &connect_id);
-			charon->connect_manager->stop_checks(charon->connect_manager,
-												 connect_id);
-		}
-	}
-#endif /* ME */
-
-	process_payloads(this, message);
-
-	return NEED_MORE;
-}
-
-/**
- * Derive the keymat for the IKE_SA
- */
-static bool derive_keys(private_ike_init_t *this,
-						chunk_t nonce_i, chunk_t nonce_r)
-{
-	keymat_t *old_keymat;
-	pseudo_random_function_t prf_alg = PRF_UNDEFINED;
-	chunk_t skd = chunk_empty;
-	ike_sa_id_t *id;
-
-	id = this->ike_sa->get_id(this->ike_sa);
-	if (this->old_sa)
-	{
-		/* rekeying: Include old SKd, use old PRF, apply SPI */
-		old_keymat = this->old_sa->get_keymat(this->old_sa);
-		prf_alg = old_keymat->get_skd(old_keymat, &skd);
-		if (this->initiator)
-		{
-			id->set_responder_spi(id, this->proposal->get_spi(this->proposal));
-		}
-		else
-		{
-			id->set_initiator_spi(id, this->proposal->get_spi(this->proposal));
-		}
-	}
-	if (!this->keymat->derive_ike_keys(this->keymat, this->proposal, this->dh,
-									   nonce_i, nonce_r, id, prf_alg, skd))
-	{
-		return FALSE;
-	}
-	charon->bus->ike_keys(charon->bus, this->ike_sa, this->dh,
-						  nonce_i, nonce_r, this->old_sa);
-	return TRUE;
-}
-
-METHOD(task_t, build_r, status_t,
-	private_ike_init_t *this, message_t *message)
-{
-	/* check if we have everything we need */
-	if (this->proposal == NULL ||
-		this->other_nonce.len == 0 || this->my_nonce.len == 0)
-	{
-		DBG1(DBG_IKE, "received proposals inacceptable");
-		message->add_notify(message, TRUE, NO_PROPOSAL_CHOSEN, chunk_empty);
-		return FAILED;
-	}
-	this->ike_sa->set_proposal(this->ike_sa, this->proposal);
-
-	if (this->dh == NULL ||
-		!this->proposal->has_dh_group(this->proposal, this->dh_group))
-	{
-		u_int16_t group;
-
-		if (this->proposal->get_algorithm(this->proposal, DIFFIE_HELLMAN_GROUP,
-										  &group, NULL))
-		{
-			DBG1(DBG_IKE, "DH group %N inacceptable, requesting %N",
-				 diffie_hellman_group_names, this->dh_group,
-				 diffie_hellman_group_names, group);
-			this->dh_group = group;
-			group = htons(group);
-			message->add_notify(message, FALSE, INVALID_KE_PAYLOAD,
-								chunk_from_thing(group));
-		}
-		else
-		{
-			DBG1(DBG_IKE, "no acceptable proposal found");
-		}
-		return FAILED;
-	}
-
-	if (!derive_keys(this, this->other_nonce, this->my_nonce))
-	{
-		DBG1(DBG_IKE, "key derivation failed");
-		message->add_notify(message, TRUE, NO_PROPOSAL_CHOSEN, chunk_empty);
-		return FAILED;
-	}
-	build_payloads(this, message);
-	return SUCCESS;
-}
-
-METHOD(task_t, process_i, status_t,
-	private_ike_init_t *this, message_t *message)
-{
-	enumerator_t *enumerator;
-	payload_t *payload;
-
-	/* check for erronous notifies */
-	enumerator = message->create_payload_enumerator(message);
-	while (enumerator->enumerate(enumerator, &payload))
-	{
-		if (payload->get_type(payload) == NOTIFY)
-		{
-			notify_payload_t *notify = (notify_payload_t*)payload;
-			notify_type_t type = notify->get_notify_type(notify);
-
-			switch (type)
-			{
-				case INVALID_KE_PAYLOAD:
-				{
-					chunk_t data;
-					diffie_hellman_group_t bad_group;
-
-					bad_group = this->dh_group;
-					data = notify->get_notification_data(notify);
-					this->dh_group = ntohs(*((u_int16_t*)data.ptr));
-					DBG1(DBG_IKE, "peer didn't accept DH group %N, "
-						 "it requested %N", diffie_hellman_group_names,
-						 bad_group, diffie_hellman_group_names, this->dh_group);
-
-					if (this->old_sa == NULL)
-					{	/* reset the IKE_SA if we are not rekeying */
-						this->ike_sa->reset(this->ike_sa);
-					}
-
-					enumerator->destroy(enumerator);
-					this->retry++;
-					return NEED_MORE;
-				}
-				case NAT_DETECTION_SOURCE_IP:
-				case NAT_DETECTION_DESTINATION_IP:
-					/* skip, handled in ike_natd_t */
-					break;
-				case MULTIPLE_AUTH_SUPPORTED:
-					/* handled in ike_auth_t */
-					break;
-				case COOKIE:
-				{
-					chunk_free(&this->cookie);
-					this->cookie = chunk_clone(notify->get_notification_data(notify));
-					this->ike_sa->reset(this->ike_sa);
-					enumerator->destroy(enumerator);
-					DBG2(DBG_IKE, "received %N notify", notify_type_names, type);
-					this->retry++;
-					return NEED_MORE;
-				}
-				default:
-				{
-					if (type <= 16383)
-					{
-						DBG1(DBG_IKE, "received %N notify error",
-							 notify_type_names, type);
-						enumerator->destroy(enumerator);
-						return FAILED;
-					}
-					DBG2(DBG_IKE, "received %N notify",
-						notify_type_names, type);
-					break;
-				}
-			}
-		}
-	}
-	enumerator->destroy(enumerator);
-
-	process_payloads(this, message);
-
-	/* check if we have everything */
-	if (this->proposal == NULL ||
-		this->other_nonce.len == 0 || this->my_nonce.len == 0)
-	{
-		DBG1(DBG_IKE, "peers proposal selection invalid");
-		return FAILED;
-	}
-	this->ike_sa->set_proposal(this->ike_sa, this->proposal);
-
-	if (this->dh == NULL ||
-		!this->proposal->has_dh_group(this->proposal, this->dh_group))
-	{
-		DBG1(DBG_IKE, "peer DH group selection invalid");
-		return FAILED;
-	}
-
-	if (!derive_keys(this, this->my_nonce, this->other_nonce))
-	{
-		DBG1(DBG_IKE, "key derivation failed");
-		return FAILED;
-	}
-	return SUCCESS;
-}
-
-METHOD(task_t, get_type, task_type_t,
-	private_ike_init_t *this)
-{
-	return IKE_INIT;
-}
-
-METHOD(task_t, migrate, void,
-	private_ike_init_t *this, ike_sa_t *ike_sa)
-{
-	DESTROY_IF(this->proposal);
-	chunk_free(&this->other_nonce);
-
-	this->ike_sa = ike_sa;
-	this->keymat = ike_sa->get_keymat(ike_sa);
-	this->proposal = NULL;
-	if (this->dh && this->dh->get_dh_group(this->dh) != this->dh_group)
-	{	/* reset DH value only if group changed (INVALID_KE_PAYLOAD) */
-		this->dh->destroy(this->dh);
-		this->dh = this->keymat->create_dh(this->keymat, this->dh_group);
-	}
-}
-
-METHOD(task_t, destroy, void,
-	private_ike_init_t *this)
-{
-	DESTROY_IF(this->dh);
-	DESTROY_IF(this->proposal);
-	chunk_free(&this->my_nonce);
-	chunk_free(&this->other_nonce);
-	chunk_free(&this->cookie);
-	free(this);
-}
-
-METHOD(ike_init_t, get_lower_nonce, chunk_t,
-	private_ike_init_t *this)
-{
-	if (memcmp(this->my_nonce.ptr, this->other_nonce.ptr,
-			   min(this->my_nonce.len, this->other_nonce.len)) < 0)
-	{
-		return this->my_nonce;
-	}
-	else
-	{
-		return this->other_nonce;
-	}
-}
-
-/*
- * Described in header.
- */
-ike_init_t *ike_init_create(ike_sa_t *ike_sa, bool initiator, ike_sa_t *old_sa)
-{
-	private_ike_init_t *this;
-
-	INIT(this,
-		.public = {
-			.task = {
-				.get_type = _get_type,
-				.migrate = _migrate,
-				.destroy = _destroy,
-			},
-			.get_lower_nonce = _get_lower_nonce,
-		},
-		.ike_sa = ike_sa,
-		.initiator = initiator,
-		.dh_group = MODP_NONE,
-		.keymat = ike_sa->get_keymat(ike_sa),
-		.old_sa = old_sa,
-	);
-
-	if (initiator)
-	{
-		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;
-}