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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 <nts_ke_session.h>
#include <util.h>
#define NKSN_GetKeys get_keys
static int
get_keys(NKSN_Instance session, SIV_Algorithm siv, NKE_Key *c2s, NKE_Key *s2c)
{
c2s->length = SIV_GetKeyLength(siv);
UTI_GetRandomBytes(c2s->key, c2s->length);
s2c->length = SIV_GetKeyLength(siv);
UTI_GetRandomBytes(s2c->key, s2c->length);
return 1;
}
#include <nts_ke_server.c>
static void
prepare_request(NKSN_Instance session, int valid)
{
uint16_t data[16];
int index, length;
if (valid)
index = -1;
else
index = random() % 9;
DEBUG_LOG("index=%d", index);
NKSN_BeginMessage(session);
memset(data, 0, sizeof (data));
length = 2;
assert(sizeof (data[0]) == 2);
if (index != 0) {
memset(data, NKE_NEXT_PROTOCOL_NTPV4 + 1, sizeof (data));
data[0] = htons(NKE_NEXT_PROTOCOL_NTPV4);
if (index == 1)
length = 0;
else if (index == 2)
length = 3 + random() % 15 * 2;
else
length = 2 + random() % 16 * 2;
TEST_CHECK(NKSN_AddRecord(session, 1, NKE_RECORD_NEXT_PROTOCOL, data, length));
}
if (index == 3)
TEST_CHECK(NKSN_AddRecord(session, 1, NKE_RECORD_NEXT_PROTOCOL, data, length));
if (index != 4) {
data[0] = htons(random() % 2 && SIV_GetKeyLength(AEAD_AES_128_GCM_SIV) > 0 ?
AEAD_AES_128_GCM_SIV : AEAD_AES_SIV_CMAC_256);
if (index == 5)
length = 0;
else if (index == 6)
length = 3 + random() % 15 * 2;
else
length = 2 + random() % 16 * 2;
TEST_CHECK(NKSN_AddRecord(session, 1, NKE_RECORD_AEAD_ALGORITHM, data, length));
}
if (index == 7)
TEST_CHECK(NKSN_AddRecord(session, 1, NKE_RECORD_AEAD_ALGORITHM, data, length));
if (index == 8) {
length = random() % (sizeof (data) + 1);
TEST_CHECK(NKSN_AddRecord(session, 1, 1000 + random() % 1000, data, length));
}
if (random() % 2) {
const char server[] = "127.0.0.1";
TEST_CHECK(NKSN_AddRecord(session, 0, NKE_RECORD_NTPV4_SERVER_NEGOTIATION,
server, sizeof (server) - 1));
}
if (random() % 2) {
data[0] = htons(123);
TEST_CHECK(NKSN_AddRecord(session, 0, NKE_RECORD_NTPV4_PORT_NEGOTIATION, data, length));
}
if (random() % 2) {
length = random() % (sizeof (data) + 1);
TEST_CHECK(NKSN_AddRecord(session, 0, 1000 + random() % 1000, data, length));
}
TEST_CHECK(NKSN_EndMessage(session));
}
static void
process_response(NKSN_Instance session, int valid)
{
int records, errors, critical, type, length;
for (records = errors = 0; ; records++) {
if (!NKSN_GetRecord(session, &critical, &type, &length, NULL, 0))
break;
if (type == NKE_RECORD_ERROR)
errors++;
}
if (valid) {
TEST_CHECK(records >= 2);
} else {
TEST_CHECK(records == 1);
TEST_CHECK(errors == 1);
}
}
void
test_unit(void)
{
NKSN_Instance session;
NKE_Context context, context2;
NKE_Cookie cookie;
int i, j, valid, l;
uint32_t sum, sum2;
char conf[][100] = {
"ntsdumpdir .",
"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();
unlink("ntskeys");
NKS_PreInitialise(0, 0, 0);
NKS_Initialise();
session = NKSN_CreateInstance(1, NULL, handle_message, NULL);
for (i = 0; i < 10000; i++) {
valid = random() % 2;
prepare_request(session, valid);
TEST_CHECK(process_request(session));
process_response(session, valid);
}
for (i = 0; i < 10000; i++) {
context.algorithm = AEAD_AES_SIV_CMAC_256;
get_keys(session, context.algorithm, &context.c2s, &context.s2c);
memset(&cookie, 0, sizeof (cookie));
TEST_CHECK(NKS_GenerateCookie(&context, &cookie));
TEST_CHECK(NKS_DecodeCookie(&cookie, &context2));
TEST_CHECK(context.algorithm == context2.algorithm);
TEST_CHECK(context.c2s.length == context2.c2s.length);
TEST_CHECK(context.s2c.length == context2.s2c.length);
TEST_CHECK(memcmp(context.c2s.key, context2.c2s.key, context.c2s.length) == 0);
TEST_CHECK(memcmp(context.s2c.key, context2.s2c.key, context.s2c.length) == 0);
if (random() % 4) {
cookie.cookie[random() % (cookie.length)]++;
} else if (random() % 4) {
generate_key(current_server_key);
} else {
l = cookie.length;
while (l == cookie.length)
cookie.length = random() % (sizeof (cookie.cookie) + 1);
}
TEST_CHECK(!NKS_DecodeCookie(&cookie, &context2));
}
unlink("ntskeys");
save_keys();
for (i = 0, sum = 0; i < MAX_SERVER_KEYS; i++) {
sum += server_keys[i].id;
for (j = 0; j < sizeof (server_keys[i].key); j++)
sum += server_keys[i].key[j];
generate_key(i);
}
load_keys();
TEST_CHECK(unlink("ntskeys") == 0);
for (i = 0, sum2 = 0; i < MAX_SERVER_KEYS; i++) {
sum2 += server_keys[i].id;
for (j = 0; j < sizeof (server_keys[i].key); j++)
sum2 += server_keys[i].key[j];
}
TEST_CHECK(sum == sum2);
NKSN_DestroyInstance(session);
NKS_Finalise();
TEST_CHECK(unlink("ntskeys") == 0);
SCH_Finalise();
LCL_Finalise();
CNF_Finalise();
}
#else
void
test_unit(void)
{
TEST_REQUIRE(0);
}
#endif
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