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Diffstat (limited to 'src/libcharon/sa/ikev2/tasks/ike_delete.c')
-rw-r--r--src/libcharon/sa/ikev2/tasks/ike_delete.c199
1 files changed, 199 insertions, 0 deletions
diff --git a/src/libcharon/sa/ikev2/tasks/ike_delete.c b/src/libcharon/sa/ikev2/tasks/ike_delete.c
new file mode 100644
index 000000000..f127b0c15
--- /dev/null
+++ b/src/libcharon/sa/ikev2/tasks/ike_delete.c
@@ -0,0 +1,199 @@
+/*
+ * Copyright (C) 2006-2007 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_delete.h"
+
+#include <daemon.h>
+#include <encoding/payloads/delete_payload.h>
+
+
+typedef struct private_ike_delete_t private_ike_delete_t;
+
+/**
+ * Private members of a ike_delete_t task.
+ */
+struct private_ike_delete_t {
+
+ /**
+ * Public methods and task_t interface.
+ */
+ ike_delete_t public;
+
+ /**
+ * Assigned IKE_SA.
+ */
+ ike_sa_t *ike_sa;
+
+ /**
+ * Are we the initiator?
+ */
+ bool initiator;
+
+ /**
+ * are we deleting a rekeyed SA?
+ */
+ bool rekeyed;
+
+ /**
+ * are we responding to a delete, but have initated our own?
+ */
+ bool simultaneous;
+};
+
+METHOD(task_t, build_i, status_t,
+ private_ike_delete_t *this, message_t *message)
+{
+ delete_payload_t *delete_payload;
+
+ DBG0(DBG_IKE, "deleting IKE_SA %s[%d] between %H[%Y]...%H[%Y]",
+ this->ike_sa->get_name(this->ike_sa),
+ this->ike_sa->get_unique_id(this->ike_sa),
+ this->ike_sa->get_my_host(this->ike_sa),
+ this->ike_sa->get_my_id(this->ike_sa),
+ this->ike_sa->get_other_host(this->ike_sa),
+ this->ike_sa->get_other_id(this->ike_sa));
+
+ delete_payload = delete_payload_create(DELETE, PROTO_IKE);
+ message->add_payload(message, (payload_t*)delete_payload);
+
+ if (this->ike_sa->get_state(this->ike_sa) == IKE_REKEYING)
+ {
+ this->rekeyed = TRUE;
+ }
+ this->ike_sa->set_state(this->ike_sa, IKE_DELETING);
+
+ DBG1(DBG_IKE, "sending DELETE for IKE_SA %s[%d]",
+ this->ike_sa->get_name(this->ike_sa),
+ this->ike_sa->get_unique_id(this->ike_sa));
+
+ return NEED_MORE;
+}
+
+METHOD(task_t, process_i, status_t,
+ private_ike_delete_t *this, message_t *message)
+{
+ DBG0(DBG_IKE, "IKE_SA deleted");
+ if (!this->rekeyed)
+ { /* invoke ike_down() hook if SA has not been rekeyed */
+ charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE);
+ }
+ /* completed, delete IKE_SA by returning DESTROY_ME */
+ return DESTROY_ME;
+}
+
+METHOD(task_t, process_r, status_t,
+ private_ike_delete_t *this, message_t *message)
+{
+ /* we don't even scan the payloads, as the message wouldn't have
+ * come so far without being correct */
+ DBG1(DBG_IKE, "received DELETE for IKE_SA %s[%d]",
+ this->ike_sa->get_name(this->ike_sa),
+ this->ike_sa->get_unique_id(this->ike_sa));
+ DBG0(DBG_IKE, "deleting IKE_SA %s[%d] between %H[%Y]...%H[%Y]",
+ this->ike_sa->get_name(this->ike_sa),
+ this->ike_sa->get_unique_id(this->ike_sa),
+ this->ike_sa->get_my_host(this->ike_sa),
+ this->ike_sa->get_my_id(this->ike_sa),
+ this->ike_sa->get_other_host(this->ike_sa),
+ this->ike_sa->get_other_id(this->ike_sa));
+
+ switch (this->ike_sa->get_state(this->ike_sa))
+ {
+ case IKE_ESTABLISHED:
+ this->ike_sa->set_state(this->ike_sa, IKE_DELETING);
+ this->ike_sa->reestablish(this->ike_sa);
+ return NEED_MORE;
+ case IKE_REKEYING:
+ this->rekeyed = TRUE;
+ break;
+ case IKE_DELETING:
+ this->simultaneous = TRUE;
+ break;
+ default:
+ break;
+ }
+ this->ike_sa->set_state(this->ike_sa, IKE_DELETING);
+ return NEED_MORE;
+}
+
+METHOD(task_t, build_r, status_t,
+ private_ike_delete_t *this, message_t *message)
+{
+ DBG0(DBG_IKE, "IKE_SA deleted");
+
+ if (this->simultaneous)
+ {
+ /* wait for peer's response for our delete request */
+ return SUCCESS;
+ }
+ if (!this->rekeyed)
+ { /* invoke ike_down() hook if SA has not been rekeyed */
+ charon->bus->ike_updown(charon->bus, this->ike_sa, FALSE);
+ }
+ /* completed, delete IKE_SA by returning DESTROY_ME */
+ return DESTROY_ME;
+}
+
+METHOD(task_t, get_type, task_type_t,
+ private_ike_delete_t *this)
+{
+ return TASK_IKE_DELETE;
+}
+
+METHOD(task_t, migrate, void,
+ private_ike_delete_t *this, ike_sa_t *ike_sa)
+{
+ this->ike_sa = ike_sa;
+ this->simultaneous = FALSE;
+}
+
+METHOD(task_t, destroy, void,
+ private_ike_delete_t *this)
+{
+ free(this);
+}
+
+/*
+ * Described in header.
+ */
+ike_delete_t *ike_delete_create(ike_sa_t *ike_sa, bool initiator)
+{
+ private_ike_delete_t *this;
+
+ INIT(this,
+ .public = {
+ .task = {
+ .get_type = _get_type,
+ .migrate = _migrate,
+ .destroy = _destroy,
+ },
+ },
+ .ike_sa = ike_sa,
+ .initiator = initiator,
+ );
+
+ 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;
+}