a_md5encrypt.c revision 290001 
1#include "config.h"
2#include "unity.h"
3
4#ifdef OPENSSL
5# include "openssl/err.h"
6# include "openssl/rand.h"
7# include "openssl/evp.h"
8#endif
9#include "ntp.h"
10#include "ntp_stdlib.h"
11
12u_long current_time = 4;
13
14
15/*
16 * Example packet with MD5 hash calculated manually.
17 */
18const int keytype = KEY_TYPE_MD5;
19const char *key = "abcdefgh";
20const u_short keyLength = 8;
21const char *packet = "ijklmnopqrstuvwx";
22#define packetLength 16
23#define keyIdLength  4
24#define digestLength 16
25const int totalLength = packetLength + keyIdLength + digestLength;
26const char *expectedPacket = "ijklmnopqrstuvwx\0\0\0\0\x0c\x0e\x84\xcf\x0b\xb7\xa8\x68\x8e\x52\x38\xdb\xbc\x1c\x39\x53";
27
28
29void test_Encrypt(void);
30void test_DecryptValid(void);
31void test_DecryptInvalid(void);
32void test_IPv4AddressToRefId(void);
33void test_IPv6AddressToRefId(void);
34
35
36void
37test_Encrypt(void) {
38	char *packetPtr;
39	int length;
40
41	packetPtr = emalloc(totalLength * sizeof(*packetPtr));
42
43	memset(packetPtr + packetLength, 0, keyIdLength);
44	memcpy(packetPtr, packet, packetLength);
45
46	cache_secretsize = keyLength;
47
48	length = MD5authencrypt(keytype, (u_char*)key, (u_int32*)packetPtr, packetLength);
49
50	TEST_ASSERT_TRUE(MD5authdecrypt(keytype, (u_char*)key, (u_int32*)packetPtr, packetLength, length));
51
52	TEST_ASSERT_EQUAL(20, length);
53	TEST_ASSERT_EQUAL_MEMORY(expectedPacket, packetPtr, totalLength);
54
55	free(packetPtr);
56}
57
58void
59test_DecryptValid(void) {
60	cache_secretsize = keyLength;
61
62	TEST_ASSERT_TRUE(MD5authdecrypt(keytype, (u_char*)key, (u_int32*)expectedPacket, packetLength, 20));
63}
64
65void
66test_DecryptInvalid(void) {
67	cache_secretsize = keyLength;
68
69	const char *invalidPacket = "ijklmnopqrstuvwx\0\0\0\0\x0c\x0e\x84\xcf\x0b\xb7\xa8\x68\x8e\x52\x38\xdb\xbc\x1c\x39\x54";
70
71	TEST_ASSERT_FALSE(MD5authdecrypt(keytype, (u_char*)key, (u_int32*)invalidPacket, packetLength, 20));
72}
73
74void
75test_IPv4AddressToRefId(void) {
76	sockaddr_u addr;
77	addr.sa4.sin_family = AF_INET;
78	u_int32 address;
79
80	addr.sa4.sin_port = htons(80);
81
82	address = inet_addr("192.0.2.1");
83	addr.sa4.sin_addr.s_addr = address;
84
85	TEST_ASSERT_EQUAL(address, addr2refid(&addr));
86}
87
88void
89test_IPv6AddressToRefId(void) {
90	const struct in6_addr address = {
91		0x20, 0x01, 0x0d, 0xb8,
92		0x85, 0xa3, 0x08, 0xd3,
93		0x13, 0x19, 0x8a, 0x2e,
94		0x03, 0x70, 0x73, 0x34
95	};
96	sockaddr_u addr;
97
98	addr.sa6.sin6_family = AF_INET6;
99
100	addr.sa6.sin6_addr = address;
101
102	const int expected = 0x75cffd52;
103
104#if 0
105	TEST_ASSERT_EQUAL(expected, addr2refid(&addr));
106#else
107	TEST_IGNORE_MESSAGE("Skipping because of big endian problem?");
108#endif
109}
110