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/*
* IKEv2 notify routines, for Libreswan
*
* Copyright (C) 2007-2008 Michael Richardson <mcr@xelerance.com>
* Copyright (C) 2008-2011 Paul Wouters <paul@xelerance.com>
* Copyright (C) 2008 Antony Antony <antony@xelerance.com>
* Copyright (C) 2008-2009 David McCullough <david_mccullough@securecomputing.com>
* Copyright (C) 2010,2012 Avesh Agarwal <avagarwa@redhat.com>
* Copyright (C) 2010-2019 Tuomo Soini <tis@foobar.fi
* Copyright (C) 2012-2019 Paul Wouters <pwouters@redhat.com>
* Copyright (C) 2012-2018 Antony Antony <antony@phenome.org>
* Copyright (C) 2013-2019 D. Hugh Redelmeier <hugh@mimosa.com>
* Copyright (C) 2013 David McCullough <ucdevel@gmail.com>
* Copyright (C) 2013 Matt Rogers <mrogers@redhat.com>
* Copyright (C) 2015-2019 Andrew Cagney <cagney@gnu.org>
* Copyright (C) 2017-2018 Sahana Prasad <sahana.prasad07@gmail.com>
* Copyright (C) 2017-2018 Vukasin Karadzic <vukasin.karadzic@gmail.com>
* Copyright (C) 2020 Yulia Kuzovkova <ukuzovkova@gmail.com>
*
* 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 "ikev2_notify.h"
#include "demux.h"
#include "pluto_stats.h"
enum v2_pbs v2_notification_to_v2_pbs(v2_notification_t n)
{
#define C(N) case v2N_##N: return PBS_v2N_##N;
switch (n) {
C(REKEY_SA);
C(NO_PPK_AUTH);
C(PPK_IDENTITY);
C(SIGNATURE_HASH_ALGORITHMS);
C(NULL_AUTH);
C(IPCOMP_SUPPORTED);
C(IKEV2_FRAGMENTATION_SUPPORTED);
C(USE_PPK);
C(REDIRECTED_FROM);
C(REDIRECT_SUPPORTED);
C(NAT_DETECTION_SOURCE_IP);
C(NAT_DETECTION_DESTINATION_IP);
C(ESP_TFC_PADDING_NOT_SUPPORTED);
C(USE_TRANSPORT_MODE);
C(MOBIKE_SUPPORTED);
C(INITIAL_CONTACT);
C(REDIRECT);
C(INVALID_SYNTAX);
C(AUTHENTICATION_FAILED);
C(UNSUPPORTED_CRITICAL_PAYLOAD);
C(COOKIE);
C(COOKIE2);
C(INVALID_KE_PAYLOAD);
C(INVALID_MAJOR_VERSION);
C(TS_UNACCEPTABLE);
C(INTERMEDIATE_EXCHANGE_SUPPORTED);
C(UPDATE_SA_ADDRESSES);
default: return PBS_v2_INVALID;
}
#undef C
}
void decode_v2N_payload(struct logger *unused_logger UNUSED, struct msg_digest *md,
const struct payload_digest *notify)
{
v2_notification_t n = notify->payload.v2n.isan_type;
const char *type;
if (n < 16384) {
type = "error";
/*
* https://tools.ietf.org/html/rfc7296#section-3.10.1
*
* Types in the range 0 - 16383 are intended for
* reporting errors. An implementation receiving a
* Notify payload with one of these types that it
* does not recognize in a response MUST assume that
* the corresponding request has failed entirely.
* Unrecognized error types in a request and status
* types in a request or response MUST be ignored,
* and they should be logged.
*
* Record the first error; and complain when there are
* more.
*/
if (md->v2N_error == v2N_NOTHING_WRONG) {
md->v2N_error = n;
} else {
/* XXX: is this allowed? */
dbg("message contains multiple error notifications: %d %d",
md->v2N_error, n);
}
} else {
type = "status";
}
const char *name = enum_name(&ikev2_notify_names, n); /* might be NULL */
if (name == NULL) {
dbg("%s notification %d is unknown", type, n);
return;
}
enum v2_pbs v2_pbs = v2_notification_to_v2_pbs(n);
if (v2_pbs == PBS_v2_INVALID) {
/* if it was supported there'd be space to save it */
dbg("%s notification %s is not supported", type, name);
return;
}
if (md->pbs[v2_pbs] != NULL) {
dbg("%s duplicate notification %s ignored", type, name);
return;
}
if (DBGP(DBG_TMI)) {
DBG_log("%s notification %s saved", type, name);
}
md->pbs[v2_pbs] = ¬ify->pbs;
}
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