netbsd/external/bsd/ntp/dist/sntp/tests/packetProcessing.c
2015-10-15 10:25:28 +02:00

342 lines
9.0 KiB
C

/* $NetBSD: packetProcessing.c,v 1.1.1.2 2015/07/10 13:11:13 christos Exp $ */
#include "config.h"
#include "sntptest.h"
#include "networking.h"
#include "ntp_stdlib.h"
#include "unity.h"
const char * Version = "stub unit test Version string";
// Hacks into the key database.
extern struct key* key_ptr;
extern int key_cnt;
static struct pkt testpkt;
static struct pkt testspkt;
static sockaddr_u testsock;
bool restoreKeyDb;
void PrepareAuthenticationTest(int key_id,
int key_len,
const char* type,
const void* key_seq) {
char str[25];
sprintf(str, "%d", key_id);
ActivateOption("-a", str);
key_cnt = 1;
key_ptr = malloc(sizeof(struct key));
key_ptr->next = NULL;
key_ptr->key_id = key_id;
key_ptr->key_len = key_len;
memcpy(key_ptr->type, "MD5", 3);
TEST_ASSERT_TRUE(key_len < sizeof(key_ptr->key_seq));
memcpy(key_ptr->key_seq, key_seq, key_ptr->key_len);
restoreKeyDb = true;
}
void PrepareAuthenticationTestMD5(int key_id,
int key_len,
const void* key_seq) {
PrepareAuthenticationTest(key_id, key_len, "MD5", key_seq);
}
void setUp() {
sntptest();
restoreKeyDb = false;
/* Initialize the test packet and socket,
* so they contain at least some valid data. */
testpkt.li_vn_mode = PKT_LI_VN_MODE(LEAP_NOWARNING, NTP_VERSION,
MODE_SERVER);
testpkt.stratum = STRATUM_REFCLOCK;
memcpy(&testpkt.refid, "GPS\0", 4);
/* Set the origin timestamp of the received packet to the
* same value as the transmit timestamp of the sent packet. */
l_fp tmp;
tmp.l_ui = 1000UL;
tmp.l_uf = 0UL;
HTONL_FP(&tmp, &testpkt.org);
HTONL_FP(&tmp, &testspkt.xmt);
}
void tearDown() {
if (restoreKeyDb) {
key_cnt = 0;
free(key_ptr);
key_ptr = NULL;
}
sntptest_destroy(); //only on the final test!! if counter == 0 etc...
}
void test_TooShortLength(void) {
TEST_ASSERT_EQUAL(PACKET_UNUSEABLE,
process_pkt(&testpkt, &testsock, LEN_PKT_NOMAC - 1,
MODE_SERVER, &testspkt, "UnitTest"));
TEST_ASSERT_EQUAL(PACKET_UNUSEABLE,
process_pkt(&testpkt, &testsock, LEN_PKT_NOMAC - 1,
MODE_BROADCAST, &testspkt, "UnitTest"));
}
void test_LengthNotMultipleOfFour(void) {
TEST_ASSERT_EQUAL(PACKET_UNUSEABLE,
process_pkt(&testpkt, &testsock, LEN_PKT_NOMAC + 6,
MODE_SERVER, &testspkt, "UnitTest"));
TEST_ASSERT_EQUAL(PACKET_UNUSEABLE,
process_pkt(&testpkt, &testsock, LEN_PKT_NOMAC + 3,
MODE_BROADCAST, &testspkt, "UnitTest"));
}
void test_TooShortExtensionFieldLength(void) {
/* The lower 16-bits are the length of the extension field.
* This lengths must be multiples of 4 bytes, which gives
* a minimum of 4 byte extension field length. */
testpkt.exten[7] = htonl(3); // 3 bytes is too short.
/* We send in a pkt_len of header size + 4 byte extension
* header + 24 byte MAC, this prevents the length error to
* be caught at an earlier stage */
int pkt_len = LEN_PKT_NOMAC + 4 + 24;
TEST_ASSERT_EQUAL(PACKET_UNUSEABLE,
process_pkt(&testpkt, &testsock, pkt_len,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_UnauthenticatedPacketReject(void) {
//sntptest();
// Activate authentication option
ActivateOption("-a", "123");
TEST_ASSERT_TRUE(ENABLED_OPT(AUTHENTICATION));
int pkt_len = LEN_PKT_NOMAC;
// We demand authentication, but no MAC header is present.
TEST_ASSERT_EQUAL(SERVER_AUTH_FAIL,
process_pkt(&testpkt, &testsock, pkt_len,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_CryptoNAKPacketReject(void) {
// Activate authentication option
ActivateOption("-a", "123");
TEST_ASSERT_TRUE(ENABLED_OPT(AUTHENTICATION));
int pkt_len = LEN_PKT_NOMAC + 4; // + 4 byte MAC = Crypto-NAK
TEST_ASSERT_EQUAL(SERVER_AUTH_FAIL,
process_pkt(&testpkt, &testsock, pkt_len,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_AuthenticatedPacketInvalid(void) {
// Activate authentication option
PrepareAuthenticationTestMD5(50, 9, "123456789");
TEST_ASSERT_TRUE(ENABLED_OPT(AUTHENTICATION));
// Prepare the packet.
int pkt_len = LEN_PKT_NOMAC;
testpkt.exten[0] = htonl(50);
int mac_len = make_mac((char*)&testpkt, pkt_len,
MAX_MD5_LEN, key_ptr,
(char*)&testpkt.exten[1]);
pkt_len += 4 + mac_len;
// Now, alter the MAC so it becomes invalid.
testpkt.exten[1] += 1;
TEST_ASSERT_EQUAL(SERVER_AUTH_FAIL,
process_pkt(&testpkt, &testsock, pkt_len,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_AuthenticatedPacketUnknownKey(void) {
// Activate authentication option
PrepareAuthenticationTestMD5(30, 9, "123456789");
TEST_ASSERT_TRUE(ENABLED_OPT(AUTHENTICATION));
// Prepare the packet. Observe that the Key-ID expected is 30,
// but the packet has a key id of 50.
int pkt_len = LEN_PKT_NOMAC;
testpkt.exten[0] = htonl(50);
int mac_len = make_mac((char*)&testpkt, pkt_len,
MAX_MD5_LEN, key_ptr,
(char*)&testpkt.exten[1]);
pkt_len += 4 + mac_len;
TEST_ASSERT_EQUAL(SERVER_AUTH_FAIL,
process_pkt(&testpkt, &testsock, pkt_len,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_ServerVersionTooOld(void) {
TEST_ASSERT_FALSE(ENABLED_OPT(AUTHENTICATION));
testpkt.li_vn_mode = PKT_LI_VN_MODE(LEAP_NOWARNING,
NTP_OLDVERSION - 1,
MODE_CLIENT);
TEST_ASSERT_TRUE(PKT_VERSION(testpkt.li_vn_mode) < NTP_OLDVERSION);
int pkt_len = LEN_PKT_NOMAC;
TEST_ASSERT_EQUAL(SERVER_UNUSEABLE,
process_pkt(&testpkt, &testsock, pkt_len,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_ServerVersionTooNew(void) {
TEST_ASSERT_FALSE(ENABLED_OPT(AUTHENTICATION));
testpkt.li_vn_mode = PKT_LI_VN_MODE(LEAP_NOWARNING,
NTP_VERSION + 1,
MODE_CLIENT);
TEST_ASSERT_TRUE(PKT_VERSION(testpkt.li_vn_mode) > NTP_VERSION);
int pkt_len = LEN_PKT_NOMAC;
TEST_ASSERT_EQUAL(SERVER_UNUSEABLE,
process_pkt(&testpkt, &testsock, pkt_len,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_NonWantedMode(void) {
TEST_ASSERT_FALSE(ENABLED_OPT(AUTHENTICATION));
testpkt.li_vn_mode = PKT_LI_VN_MODE(LEAP_NOWARNING,
NTP_VERSION,
MODE_CLIENT);
// The packet has a mode of MODE_CLIENT, but process_pkt expects MODE_SERVER
TEST_ASSERT_EQUAL(SERVER_UNUSEABLE,
process_pkt(&testpkt, &testsock, LEN_PKT_NOMAC,
MODE_SERVER, &testspkt, "UnitTest"));
}
/* Tests bug 1597 */
void test_KoDRate(void) {
TEST_ASSERT_FALSE(ENABLED_OPT(AUTHENTICATION));
testpkt.stratum = STRATUM_PKT_UNSPEC;
memcpy(&testpkt.refid, "RATE", 4);
TEST_ASSERT_EQUAL(KOD_RATE,
process_pkt(&testpkt, &testsock, LEN_PKT_NOMAC,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_KoDDeny(void) {
TEST_ASSERT_FALSE(ENABLED_OPT(AUTHENTICATION));
testpkt.stratum = STRATUM_PKT_UNSPEC;
memcpy(&testpkt.refid, "DENY", 4);
TEST_ASSERT_EQUAL(KOD_DEMOBILIZE,
process_pkt(&testpkt, &testsock, LEN_PKT_NOMAC,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_RejectUnsyncedServer(void) {
TEST_ASSERT_FALSE(ENABLED_OPT(AUTHENTICATION));
testpkt.li_vn_mode = PKT_LI_VN_MODE(LEAP_NOTINSYNC,
NTP_VERSION,
MODE_SERVER);
TEST_ASSERT_EQUAL(SERVER_UNUSEABLE,
process_pkt(&testpkt, &testsock, LEN_PKT_NOMAC,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_RejectWrongResponseServerMode(void) {
TEST_ASSERT_FALSE(ENABLED_OPT(AUTHENTICATION));
l_fp tmp;
tmp.l_ui = 1000UL;
tmp.l_uf = 0UL;
HTONL_FP(&tmp, &testpkt.org);
tmp.l_ui = 2000UL;
tmp.l_uf = 0UL;
HTONL_FP(&tmp, &testspkt.xmt);
TEST_ASSERT_EQUAL(PACKET_UNUSEABLE,
process_pkt(&testpkt, &testsock, LEN_PKT_NOMAC,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_AcceptNoSentPacketBroadcastMode(void) {
TEST_ASSERT_FALSE(ENABLED_OPT(AUTHENTICATION));
testpkt.li_vn_mode = PKT_LI_VN_MODE(LEAP_NOWARNING,
NTP_VERSION,
MODE_BROADCAST);
TEST_ASSERT_EQUAL(LEN_PKT_NOMAC,
process_pkt(&testpkt, &testsock, LEN_PKT_NOMAC,
MODE_BROADCAST, NULL, "UnitTest"));
}
void test_CorrectUnauthenticatedPacket(void) {
TEST_ASSERT_FALSE(ENABLED_OPT(AUTHENTICATION));
TEST_ASSERT_EQUAL(LEN_PKT_NOMAC,
process_pkt(&testpkt, &testsock, LEN_PKT_NOMAC,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_CorrectAuthenticatedPacketMD5(void) {
PrepareAuthenticationTestMD5(10, 15, "123456789abcdef");
TEST_ASSERT_TRUE(ENABLED_OPT(AUTHENTICATION));
int pkt_len = LEN_PKT_NOMAC;
// Prepare the packet.
testpkt.exten[0] = htonl(10);
int mac_len = make_mac((char*)&testpkt, pkt_len,
MAX_MD5_LEN, key_ptr,
(char*)&testpkt.exten[1]);
pkt_len += 4 + mac_len;
TEST_ASSERT_EQUAL(pkt_len,
process_pkt(&testpkt, &testsock, pkt_len,
MODE_SERVER, &testspkt, "UnitTest"));
}
void test_CorrectAuthenticatedPacketSHA1(void) {
PrepareAuthenticationTest(20, 15, "SHA1", "abcdefghijklmno");
TEST_ASSERT_TRUE(ENABLED_OPT(AUTHENTICATION));
int pkt_len = LEN_PKT_NOMAC;
// Prepare the packet.
testpkt.exten[0] = htonl(20);
int mac_len = make_mac((char*)&testpkt, pkt_len,
MAX_MAC_LEN, key_ptr,
(char*)&testpkt.exten[1]);
pkt_len += 4 + mac_len;
TEST_ASSERT_EQUAL(pkt_len,
process_pkt(&testpkt, &testsock, pkt_len,
MODE_SERVER, &testspkt, "UnitTest"));
}