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/*
**********************************************************************
* Copyright (C) Miroslav Lichvar 2020
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of version 2 of the GNU General Public License as
* published by the Free Software Foundation.
*
* 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.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
**********************************************************************
*/
#include <config.h>
#include "test.h"
#ifdef FEAT_NTS
#include <local.h>
#include <sched.h>
#include <nts_ntp_server.c>
static void
prepare_request(NTP_Packet *packet, NTP_PacketInfo *info, int valid, int nak)
{
unsigned char uniq_id[NTS_MIN_UNIQ_ID_LENGTH], nonce[NTS_MIN_UNPADDED_NONCE_LENGTH];
SIV_Instance siv;
NKE_Context context;
NKE_Cookie cookie;
int i, index, cookie_start, auth_start;
context.algorithm = random() % 2 && SIV_GetKeyLength(AEAD_AES_128_GCM_SIV) > 0 ?
AEAD_AES_128_GCM_SIV : AEAD_AES_SIV_CMAC_256;
context.c2s.length = SIV_GetKeyLength(context.algorithm);
assert(context.c2s.length <= sizeof (context.c2s.key));
UTI_GetRandomBytes(&context.c2s.key, context.c2s.length);
context.s2c.length = SIV_GetKeyLength(context.algorithm);
assert(context.s2c.length <= sizeof (context.s2c.key));
UTI_GetRandomBytes(&context.s2c.key, context.s2c.length);
TEST_CHECK(NKS_GenerateCookie(&context, &cookie));
UTI_GetRandomBytes(uniq_id, sizeof (uniq_id));
UTI_GetRandomBytes(nonce, sizeof (nonce));
memset(packet, 0, sizeof (*packet));
packet->lvm = NTP_LVM(0, 4, MODE_CLIENT);
memset(info, 0, sizeof (*info));
info->version = 4;
info->mode = MODE_CLIENT;
info->length = NTP_HEADER_LENGTH;
if (valid)
index = -1;
else
index = random() % 3;
DEBUG_LOG("valid=%d nak=%d index=%d", valid, nak, index);
if (index != 0)
TEST_CHECK(NEF_AddField(packet, info, NTP_EF_NTS_UNIQUE_IDENTIFIER,
uniq_id, sizeof (uniq_id)));
cookie_start = info->length;
if (index != 1)
TEST_CHECK(NEF_AddField(packet, info, NTP_EF_NTS_COOKIE,
cookie.cookie, cookie.length));
for (i = random() % 4; i > 0; i--)
TEST_CHECK(NEF_AddField(packet, info, NTP_EF_NTS_COOKIE_PLACEHOLDER,
cookie.cookie, cookie.length));
auth_start = info->length;
if (index != 2) {
siv = SIV_CreateInstance(context.algorithm);
TEST_CHECK(siv);
TEST_CHECK(SIV_SetKey(siv, context.c2s.key, context.c2s.length));
TEST_CHECK(NNA_GenerateAuthEF(packet, info, siv, nonce, sizeof (nonce),
(const unsigned char *)"", 0, 0));
SIV_DestroyInstance(siv);
}
if (nak)
((unsigned char *)packet)[(index == 2 ? cookie_start :
(index == 1 ? auth_start :
(random() % 2 ? cookie_start : auth_start))) +
4 + random() % 16]++;
}
static void
init_response(NTP_Packet *packet, NTP_PacketInfo *info)
{
memset(packet, 0, sizeof (*packet));
packet->lvm = NTP_LVM(0, 4, MODE_SERVER);
memset(info, 0, sizeof (*info));
info->version = 4;
info->mode = MODE_SERVER;
info->length = NTP_HEADER_LENGTH;
}
void
test_unit(void)
{
NTP_PacketInfo req_info, res_info;
NTP_Packet request, response;
int i, valid, nak;
uint32_t kod;
char conf[][100] = {
"ntsport 0",
"ntsprocesses 0",
"ntsserverkey nts_ke.key",
"ntsservercert nts_ke.crt",
};
CNF_Initialise(0, 0);
for (i = 0; i < sizeof conf / sizeof conf[0]; i++)
CNF_ParseLine(NULL, i + 1, conf[i]);
LCL_Initialise();
TST_RegisterDummyDrivers();
SCH_Initialise();
NKS_PreInitialise(0, 0, 0);
NKS_Initialise();
NNS_Initialise();
for (i = 0; i < 50000; i++) {
valid = random() % 2;
nak = random() % 2;
prepare_request(&request, &req_info, valid, nak);
TEST_CHECK(NNS_CheckRequestAuth(&request, &req_info, &kod) == (valid && !nak));
if (valid && !nak) {
TEST_CHECK(kod == 0);
TEST_CHECK(server->num_cookies > 0);
init_response(&response, &res_info);
TEST_CHECK(NNS_GenerateResponseAuth(&request, &req_info, &response, &res_info, kod));
TEST_CHECK(res_info.ext_fields == 2);
TEST_CHECK(server->num_cookies == 0);
} else if (valid && nak) {
TEST_CHECK(kod == NTP_KOD_NTS_NAK);
TEST_CHECK(server->num_cookies == 0);
init_response(&response, &res_info);
TEST_CHECK(NNS_GenerateResponseAuth(&request, &req_info, &response, &res_info, kod));
TEST_CHECK(res_info.ext_fields == 1);
TEST_CHECK(server->num_cookies == 0);
} else {
TEST_CHECK(kod == 0);
TEST_CHECK(server->num_cookies == 0);
}
}
NNS_Finalise();
NKS_Finalise();
SCH_Finalise();
LCL_Finalise();
CNF_Finalise();
}
#else
void
test_unit(void)
{
TEST_REQUIRE(0);
}
#endif
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