#include "config.h"
#include "unity.h"

#ifdef OPENSSL
# include "openssl/err.h"
# include "openssl/rand.h"
# include "openssl/evp.h"
#endif
#include "ntp.h"
#include "ntp_stdlib.h"

u_long current_time = 4;


void setUp(void)
{
}

void tearDown(void)
{
}

/*
 * Example packet with MD5 hash calculated manually.
 */
const int keytype = KEY_TYPE_MD5;
const char *key = "abcdefgh";
const u_short keyLength = 8;
const char *packet = "ijklmnopqrstuvwx";
#define packetLength 16		//const int packetLength = 16;
#define keyIdLength  4		//const int keyIdLength = 4;
#define digestLength 16		//const int digestLength = 16;
const int totalLength = packetLength + keyIdLength + digestLength;
const char *expectedPacket = "ijklmnopqrstuvwx\0\0\0\0\x0c\x0e\x84\xcf\x0b\xb7\xa8\x68\x8e\x52\x38\xdb\xbc\x1c\x39\x53";

void test_Encrypt() {
	char *packetPtr = malloc(totalLength*sizeof(*packetPtr)); //new char[totalLength];

	memset(packetPtr+packetLength, 0, keyIdLength);
	memcpy(packetPtr, packet, packetLength);

	cache_secretsize = keyLength;

	int length = MD5authencrypt(keytype, (u_char*)key, (u_int32*)packetPtr, packetLength);

	TEST_ASSERT_TRUE(MD5authdecrypt(keytype, (u_char*)key, (u_int32*)packetPtr, packetLength, length));

	TEST_ASSERT_EQUAL(20, length);
	TEST_ASSERT_TRUE(memcmp(expectedPacket, packetPtr, totalLength) == 0);

	free(packetPtr); //delete[] packetPtr;
}

void test_DecryptValid() {
	cache_secretsize = keyLength;

	TEST_ASSERT_TRUE(MD5authdecrypt(keytype, (u_char*)key, (u_int32*)expectedPacket, packetLength, 20));
}

void test_DecryptInvalid() {
	cache_secretsize = keyLength;

	const char *invalidPacket = "ijklmnopqrstuvwx\0\0\0\0\x0c\x0e\x84\xcf\x0b\xb7\xa8\x68\x8e\x52\x38\xdb\xbc\x1c\x39\x54";

	TEST_ASSERT_FALSE(MD5authdecrypt(keytype, (u_char*)key, (u_int32*)invalidPacket, packetLength, 20));
}

void test_IPv4AddressToRefId() {
	sockaddr_u addr;
	addr.sa4.sin_family = AF_INET;
	addr.sa4.sin_port = htons(80);

	u_int32 address = inet_addr("192.0.2.1");
	addr.sa4.sin_addr.s_addr = address;

	TEST_ASSERT_EQUAL(address, addr2refid(&addr));
}

void test_IPv6AddressToRefId() {
	const struct in6_addr address = {
		0x20, 0x01, 0x0d, 0xb8,
		0x85, 0xa3, 0x08, 0xd3,
		0x13, 0x19, 0x8a, 0x2e,
		0x03, 0x70, 0x73, 0x34
	};
	sockaddr_u addr;

	addr.sa6.sin6_family = AF_INET6;

	addr.sa6.sin6_addr = address;

	const int expected = 0x75cffd52;

#if 0
	TEST_ASSERT_EQUAL(expected, addr2refid(&addr));
#else
	TEST_IGNORE_MESSAGE("Skipping because of big endian problem?");
#endif
}