[svn-upgrade] Integrating new upstream version, strongswan (4.4.0)

1 files changed, 196 insertions, 0 deletions

diff --git a/src/libcharon/sa/tasks/ike_reauth.c b/src/libcharon/sa/tasks/ike_reauth.c
new file mode 100644
index 000000000..ac89c358b
--- /dev/null
+++ b/src/libcharon/sa/tasks/ike_reauth.c
@@ -0,0 +1,196 @@
+/*
+ * Copyright (C) 2006-2008 Martin Willi
+ * 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_reauth.h"
+
+#include <daemon.h>
+#include <sa/tasks/ike_delete.h>
+
+
+typedef struct private_ike_reauth_t private_ike_reauth_t;
+
+/**
+ * Private members of a ike_reauth_t task.
+ */
+struct private_ike_reauth_t {
+
+	/**
+	 * Public methods and task_t interface.
+	 */
+	ike_reauth_t public;
+
+	/**
+	 * Assigned IKE_SA.
+	 */
+	ike_sa_t *ike_sa;
+
+	/**
+	 * reused ike_delete task
+	 */
+	ike_delete_t *ike_delete;
+};
+
+/**
+ * Implementation of task_t.build for initiator
+ */
+static status_t build_i(private_ike_reauth_t *this, message_t *message)
+{
+	return this->ike_delete->task.build(&this->ike_delete->task, message);
+}
+
+/**
+ * Implementation of task_t.process for initiator
+ */
+static status_t process_i(private_ike_reauth_t *this, message_t *message)
+{
+	ike_sa_t *new;
+	host_t *host;
+	iterator_t *iterator;
+	child_sa_t *child_sa;
+	peer_cfg_t *peer_cfg;
+
+	/* process delete response first */
+	this->ike_delete->task.process(&this->ike_delete->task, message);
+
+	peer_cfg = this->ike_sa->get_peer_cfg(this->ike_sa);
+
+	/* reauthenticate only if we have children */
+	iterator = this->ike_sa->create_child_sa_iterator(this->ike_sa);
+	if (iterator->get_count(iterator) == 0
+#ifdef ME
+		/* we allow peers to reauth mediation connections (without children) */
+		&& !peer_cfg->is_mediation(peer_cfg)
+#endif /* ME */
+		)
+	{
+		DBG1(DBG_IKE, "unable to reauthenticate IKE_SA, no CHILD_SA to recreate");
+		iterator->destroy(iterator);
+		return FAILED;
+	}
+
+	new = charon->ike_sa_manager->checkout_new(charon->ike_sa_manager, TRUE);
+
+	new->set_peer_cfg(new, peer_cfg);
+	host = this->ike_sa->get_other_host(this->ike_sa);
+	new->set_other_host(new, host->clone(host));
+	host = this->ike_sa->get_my_host(this->ike_sa);
+	new->set_my_host(new, host->clone(host));
+	/* if we already have a virtual IP, we reuse it */
+	host = this->ike_sa->get_virtual_ip(this->ike_sa, TRUE);
+	if (host)
+	{
+		new->set_virtual_ip(new, TRUE, host);
+	}
+
+#ifdef ME
+	/* we initiate the new IKE_SA of the mediation connection without CHILD_SA */
+	if (peer_cfg->is_mediation(peer_cfg))
+	{
+		if (new->initiate(new, NULL, 0, NULL, NULL) == DESTROY_ME)
+		{
+			charon->ike_sa_manager->checkin_and_destroy(
+								charon->ike_sa_manager, new);
+			/* set threads active IKE_SA after checkin */
+			charon->bus->set_sa(charon->bus, this->ike_sa);
+			DBG1(DBG_IKE, "reauthenticating IKE_SA failed");
+			return FAILED;
+		}
+	}
+#endif /* ME */
+
+	while (iterator->iterate(iterator, (void**)&child_sa))
+	{
+		switch (child_sa->get_state(child_sa))
+		{
+			case CHILD_ROUTED:
+			{
+				/* move routed child directly */
+				iterator->remove(iterator);
+				new->add_child_sa(new, child_sa);
+				break;
+			}
+			default:
+			{
+				/* initiate/queue all child SAs */
+				child_cfg_t *child_cfg = child_sa->get_config(child_sa);
+				child_cfg->get_ref(child_cfg);
+				if (new->initiate(new, child_cfg, 0, NULL, NULL) == DESTROY_ME)
+				{
+					iterator->destroy(iterator);
+					charon->ike_sa_manager->checkin_and_destroy(
+										charon->ike_sa_manager, new);
+					/* set threads active IKE_SA after checkin */
+					charon->bus->set_sa(charon->bus, this->ike_sa);
+					DBG1(DBG_IKE, "reauthenticating IKE_SA failed");
+					return FAILED;
+				}
+				break;
+			}
+		}
+	}
+	iterator->destroy(iterator);
+	charon->ike_sa_manager->checkin(charon->ike_sa_manager, new);
+	/* set threads active IKE_SA after checkin */
+	charon->bus->set_sa(charon->bus, this->ike_sa);
+
+	/* we always return failed to delete the obsolete IKE_SA */
+	return FAILED;
+}
+
+/**
+ * Implementation of task_t.get_type
+ */
+static task_type_t get_type(private_ike_reauth_t *this)
+{
+	return IKE_REAUTH;
+}
+
+/**
+ * Implementation of task_t.migrate
+ */
+static void migrate(private_ike_reauth_t *this, ike_sa_t *ike_sa)
+{
+	this->ike_delete->task.migrate(&this->ike_delete->task, ike_sa);
+	this->ike_sa = ike_sa;
+}
+
+/**
+ * Implementation of task_t.destroy
+ */
+static void destroy(private_ike_reauth_t *this)
+{
+	this->ike_delete->task.destroy(&this->ike_delete->task);
+	free(this);
+}
+
+/*
+ * Described in header.
+ */
+ike_reauth_t *ike_reauth_create(ike_sa_t *ike_sa)
+{
+	private_ike_reauth_t *this = malloc_thing(private_ike_reauth_t);
+
+	this->public.task.get_type = (task_type_t(*)(task_t*))get_type;
+	this->public.task.migrate = (void(*)(task_t*,ike_sa_t*))migrate;
+	this->public.task.destroy = (void(*)(task_t*))destroy;
+	this->public.task.build = (status_t(*)(task_t*,message_t*))build_i;
+	this->public.task.process = (status_t(*)(task_t*,message_t*))process_i;
+
+	this->ike_sa = ike_sa;
+	this->ike_delete = ike_delete_create(ike_sa, TRUE);
+
+	return &this->public;
+}
+