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