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/* rekey connections: IKEv2
*
* Copyright (C) 1998-2002,2013 D. Hugh Redelmeier <hugh@mimosa.com>
* Copyright (C) 2008 Michael Richardson <mcr@xelerance.com>
* Copyright (C) 2009 Paul Wouters <paul@xelerance.com>
* Copyright (C) 2012 Paul Wouters <paul@libreswan.org>
* Copyright (C) 2013-2019 Paul Wouters <pwouters@redhat.com>
* Copyright (C) 2019 Andrew Cagney <cagney@gnu.org>
* Copyright (C) 2019 Antony Antony <antony@phenome.org>
*
* 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 <https://www.gnu.org/licenses/gpl2.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 "defs.h"
#include "log.h"
#include "connections.h"
#include "state.h"
#include "timer.h"
#include "whack_sa.h"
#include "show.h"
#include "visit_connection.h"
#include "ikev2_delete.h"
static bool whack_rekey_sa(struct state *st)
{
event_force(EVENT_v2_REKEY, st);
return true; /* the connection counts */
}
static bool whack_delete_sa(struct state *st)
{
switch (st->st_sa_type_when_established) {
case IKE_SA:
submit_v2_delete_exchange(pexpect_ike_sa(st), NULL);
return true; /* the connection counts */
case CHILD_SA:
submit_v2_delete_exchange(ike_sa(st, HERE), pexpect_child_sa(st));
return true; /* the connection counts */
}
bad_case(st->st_sa_type_when_established);
}
static unsigned whack_connection_sa(const struct whack_message *m,
struct show *s,
struct connection *c)
{
struct logger *logger = show_logger(s);
if (!can_have_sa(c, m->whack_sa_type)) {
/* silently skip */
connection_attach(c, logger);
ldbg(logger, "skipping non-%s connection",
connection_sa_name(c, m->whack_sa_type));
connection_detach(c, logger);
return 0;
}
so_serial_t so = SOS_NOBODY;
switch (m->whack_sa_type) {
case IKE_SA: so = c->established_ike_sa; break;
case CHILD_SA: so = c->established_child_sa; break;
}
if (so == SOS_NOBODY) {
connection_attach(c, logger);
llog(RC_LOG, c->logger, "connection does not have an established %s",
connection_sa_name(c, m->whack_sa_type));
connection_detach(c, logger);
return 0; /* the connection doesn't count */
}
struct state *st = state_by_serialno(so);
if (st == NULL) {
connection_attach(c, logger);
llog(RC_LOG, c->logger, "connection established %s "PRI_SO" missing",
connection_sa_name(c, m->whack_sa_type),
pri_so(so));
connection_detach(c, logger);
return 0; /* the connection doesn't count */
}
if (!m->whack_async) {
state_attach(st, logger);
}
/* find and attach to the IKE SA */
if (IS_CHILD_SA(st)) {
struct child_sa *child = pexpect_child_sa(st);
struct ike_sa *parent = parent_sa(child);
if (parent == NULL) {
llog_sa(RC_LOG, child,
"%s has no %s",
st->st_connection->config->ike_info->child_sa_name,
st->st_connection->config->ike_info->parent_sa_name);
return 0; /* the connection doesn't count */
}
if (!m->whack_async) {
state_attach(&parent->sa, logger);
}
}
switch (m->whack_sa) {
case WHACK_REKEY_SA:
return whack_rekey_sa(st);
case WHACK_DELETE_SA:
return whack_delete_sa(st);
case WHACK_DOWN_SA:
del_policy(c, policy.up);
return whack_delete_sa(st);
}
bad_case(m->whack_sa);
}
void whack_sa(const struct whack_message *m, struct show *s)
{
struct logger *logger = show_logger(s);
if (m->name == NULL) {
/* leave bread crumb */
enum_buf stb;
llog(RC_FATAL, logger,
"received command to %s connection %s, but did not receive the connection name",
whack_sa_name(m->whack_sa),
str_enum(&sa_type_names, m->whack_sa_type, &stb));
return;
}
whack_connections_bottom_up(m, s, whack_connection_sa,
(struct each) {
.log_unknown_name = true,
});
}
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