a_md5encrypt.c revision 293896 
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 u_char *key = (const u_char*)"abcdefgh";
20const u_short keyLength = 8;
21const u_char *packet = (const u_char*)"ijklmnopqrstuvwx";
22#define packetLength 16
23#define keyIdLength  4
24#define digestLength 16
25#define totalLength (packetLength + keyIdLength + digestLength)
26union {
27	u_char		u8 [totalLength];
28	uint32_t	u32[1];
29} expectedPacket = {
30	"ijklmnopqrstuvwx\0\0\0\0\x0c\x0e\x84\xcf\x0b\xb7\xa8\x68\x8e\x52\x38\xdb\xbc\x1c\x39\x53"
31};
32union {
33	u_char		u8 [totalLength];
34	uint32_t	u32[1];
35} invalidPacket = {
36	"ijklmnopqrstuvwx\0\0\0\0\x0c\x0e\x84\xcf\x0b\xb7\xa8\x68\x8e\x52\x38\xdb\xbc\x1c\x39\x54"
37};
38
39
40void test_Encrypt(void);
41void test_DecryptValid(void);
42void test_DecryptInvalid(void);
43void test_IPv4AddressToRefId(void);
44void test_IPv6AddressToRefId(void);
45
46
47void
48test_Encrypt(void) {
49	u_int32 *packetPtr;
50	int length;
51
52	packetPtr = emalloc(totalLength * sizeof(*packetPtr));
53
54	memset(packetPtr + packetLength, 0, keyIdLength);
55	memcpy(packetPtr, packet, packetLength);
56
57	cache_secretsize = keyLength;
58
59	length = MD5authencrypt(keytype, key, packetPtr, packetLength);
60
61	TEST_ASSERT_TRUE(MD5authdecrypt(keytype, key, packetPtr, packetLength, length));
62
63	TEST_ASSERT_EQUAL(20, length);
64	TEST_ASSERT_EQUAL_MEMORY(expectedPacket.u8, packetPtr, totalLength);
65
66	free(packetPtr);
67}
68
69void
70test_DecryptValid(void) {
71	cache_secretsize = keyLength;
72	TEST_ASSERT_TRUE(MD5authdecrypt(keytype, key, expectedPacket.u32, packetLength, 20));
73}
74
75void
76test_DecryptInvalid(void) {
77	cache_secretsize = keyLength;
78	TEST_ASSERT_FALSE(MD5authdecrypt(keytype, key, invalidPacket.u32, packetLength, 20));
79}
80
81void
82test_IPv4AddressToRefId(void) {
83	sockaddr_u addr;
84	addr.sa4.sin_family = AF_INET;
85	u_int32 address;
86
87	addr.sa4.sin_port = htons(80);
88
89	address = inet_addr("192.0.2.1");
90	addr.sa4.sin_addr.s_addr = address;
91
92	TEST_ASSERT_EQUAL(address, addr2refid(&addr));
93}
94
95void
96test_IPv6AddressToRefId(void) {
97	const int expected = 0x75cffd52;
98	const struct in6_addr address = { { {
99		0x20, 0x01, 0x0d, 0xb8,
100		0x85, 0xa3, 0x08, 0xd3,
101		0x13, 0x19, 0x8a, 0x2e,
102		0x03, 0x70, 0x73, 0x34
103	} } };
104	sockaddr_u addr;
105
106	addr.sa6.sin6_family = AF_INET6;
107
108	addr.sa6.sin6_addr = address;
109
110
111#if 0
112	TEST_ASSERT_EQUAL(expected, addr2refid(&addr));
113#else
114	(void)expected;
115	TEST_IGNORE_MESSAGE("Skipping because of big endian problem?");
116#endif
117}
118