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#include <test.h>
#include <unistd.h>
#include <string.h>
#include <hash.h>
#include <openssl/rsa.h>
#include <openssl/evp.h>
#include <openssl/bn.h>
/*
* To test the hash implementation we need three things:
* - A string
* - A file
* - A RSA key
* We run one test for each, using two algorithms, MD5 and SHA256.
*/
static int initialized = 0;
static char message[] = "This is a message";
static int message_length = 0;
static char file[] = "/tmp/hashXXXXXX";
static int fd = -1;
static RSA *rsa = NULL;
void tests_setup()
{
int result = 0;
fd = mkstemp(file);
if (fd < 0)
{
initialized = 0;
return;
}
message_length = strlen(message);
result = write(fd, message, message_length);
if (result < 0)
{
close (fd);
unlink (file);
initialized = 0;
return;
}
rsa = RSA_new();
if (rsa)
{
BIGNUM *bn = NULL;
bn = BN_new();
if (!bn)
{
close (fd);
unlink (file);
RSA_free(rsa);
initialized = 0;
return;
}
BN_set_word(bn, 3);
RSA_generate_key_ex(rsa, 1024, bn, NULL);
BN_free(bn);
}
OpenSSL_add_all_digests();
initialized = 1;
}
void tests_teardown()
{
if (fd >= 0)
{
close (fd);
unlink (file);
}
if (rsa)
{
RSA_free(rsa);
}
initialized = 0;
}
#define ASSERT_IF_NOT_INITIALIZED \
assert_int_equal(1, initialized)
/*
* Tests
* Each test does the same but from different sources, this is:
* 1. Create a new hash structure using MD5
* 2. Check the length of the generated hash.
* 3. Check the printable version (check that is not NULL).
* 4. Destroy the hash structure.
* 5. Create a new hash structure using SHA256.
* 6. Check the length of the generated hash.
* 7. Check the printable version (check that is not NULL).
* 8. Destroy the hash structure.
*/
static void test_HashString(void)
{
ASSERT_IF_NOT_INITIALIZED;
Hash *hash = NULL;
unsigned int length = 0;
assert_true(hash == NULL);
hash = HashNew(message, message_length, HASH_METHOD_MD5);
assert_true(hash != NULL);
assert_int_equal(HASH_METHOD_MD5, HashType(hash));
assert_int_equal(CF_MD5_LEN, HashLength(hash));
assert_true(HashData(hash, &length) != NULL);
assert_int_equal(length, CF_MD5_LEN);
assert_true(HashPrintable(hash) != NULL);
const char *md5_hash = HashPrintable(hash);
assert_true((md5_hash[0] == 'M') && (md5_hash[1] == 'D') && (md5_hash[2] == '5') && (md5_hash[3] == '='));
HashDestroy(&hash);
assert_true(hash == NULL);
hash = HashNew(message, message_length, HASH_METHOD_SHA256);
assert_true(hash != NULL);
assert_int_equal(HASH_METHOD_SHA256, HashType(hash));
assert_int_equal(CF_SHA256_LEN, HashLength(hash));
assert_true(HashData(hash, &length) != NULL);
assert_int_equal(length, CF_SHA256_LEN);
assert_true(HashPrintable(hash) != NULL);
const char *sha256_hash = HashPrintable(hash);
assert_true((sha256_hash[0] == 'S') && (sha256_hash[1] == 'H') && (sha256_hash[2] == 'A') && (sha256_hash[3] == '='));
HashDestroy(&hash);
/* Negative cases */
assert_true(HashNew(NULL, message_length, HASH_METHOD_MD5) == NULL);
assert_true(HashNew(message, 0, HASH_METHOD_MD5) == NULL);
assert_true(HashNew(message, message_length, HASH_METHOD_NONE) == NULL);
assert_true(HashNew(message, 0, HASH_METHOD_NONE) == NULL);
assert_true(HashNew(NULL, message_length, HASH_METHOD_NONE) == NULL);
}
static void test_HashDescriptor(void)
{
ASSERT_IF_NOT_INITIALIZED;
Hash *hash = NULL;
unsigned int length = 0;
assert_true(hash == NULL);
hash = HashNewFromDescriptor(fd, HASH_METHOD_MD5);
assert_true(hash != NULL);
assert_int_equal(HASH_METHOD_MD5, HashType(hash));
assert_int_equal(CF_MD5_LEN, HashLength(hash));
assert_true(HashData(hash, &length) != NULL);
assert_int_equal(length, CF_MD5_LEN);
assert_true(HashPrintable(hash) != NULL);
HashDestroy(&hash);
assert_true(hash == NULL);
hash = HashNewFromDescriptor(fd, HASH_METHOD_SHA256);
assert_true(hash != NULL);
assert_int_equal(HASH_METHOD_SHA256, HashType(hash));
assert_int_equal(CF_SHA256_LEN, HashLength(hash));
assert_true(HashData(hash, &length) != NULL);
assert_int_equal(length, CF_SHA256_LEN);
assert_true(HashPrintable(hash) != NULL);
HashDestroy(&hash);
/* Negative cases */
assert_true(HashNewFromDescriptor(-1, HASH_METHOD_MD5) == NULL);
assert_true(HashNewFromDescriptor(fd, HASH_METHOD_NONE) == NULL);
assert_true(HashNewFromDescriptor(-1, HASH_METHOD_NONE) == NULL);
}
static void test_HashKey(void)
{
ASSERT_IF_NOT_INITIALIZED;
Hash *hash = NULL;
unsigned int length = 0;
assert_true(hash == NULL);
hash = HashNewFromKey(rsa, HASH_METHOD_MD5);
assert_true(hash != NULL);
assert_int_equal(HASH_METHOD_MD5, HashType(hash));
assert_int_equal(CF_MD5_LEN, HashLength(hash));
assert_true(HashData(hash, &length) != NULL);
assert_int_equal(length, CF_MD5_LEN);
assert_true(HashPrintable(hash) != NULL);
HashDestroy(&hash);
assert_true(hash == NULL);
hash = HashNewFromKey(rsa, HASH_METHOD_SHA256);
assert_true(hash != NULL);
assert_int_equal(HASH_METHOD_SHA256, HashType(hash));
assert_int_equal(CF_SHA256_LEN, HashLength(hash));
assert_true(HashData(hash, &length) != NULL);
assert_int_equal(length, CF_SHA256_LEN);
assert_true(HashPrintable(hash) != NULL);
HashDestroy(&hash);
/* Negative cases */
assert_true(HashNewFromKey(NULL, HASH_METHOD_MD5) == NULL);
assert_true(HashNewFromKey(rsa, HASH_METHOD_NONE) == NULL);
assert_true(HashNewFromKey(NULL, HASH_METHOD_NONE) == NULL);
}
static void test_HashCopy(void)
{
ASSERT_IF_NOT_INITIALIZED;
Hash *hash = NULL;
Hash *copy = NULL;
unsigned int length = 0;
assert_true(hash == NULL);
hash = HashNew(message, message_length, HASH_METHOD_MD5);
assert_true(hash != NULL);
assert_int_equal(HASH_METHOD_MD5, HashType(hash));
assert_int_equal(CF_MD5_LEN, HashLength(hash));
assert_true(HashData(hash, &length) != NULL);
assert_int_equal(length, CF_MD5_LEN);
assert_true(HashPrintable(hash) != NULL);
assert_int_equal(0, HashCopy(hash, ©));
assert_int_equal(HASH_METHOD_MD5, HashType(copy));
assert_int_equal(CF_MD5_LEN, HashLength(copy));
assert_true(HashData(copy, &length) != NULL);
assert_int_equal(length, CF_MD5_LEN);
assert_true(HashPrintable(copy) != NULL);
assert_string_equal(HashPrintable(hash), HashPrintable(copy));
HashDestroy(©);
assert_true(copy == NULL);
/* Negative cases */
assert_int_equal(-1, HashCopy(NULL, ©));
assert_int_equal(-1, HashCopy(hash, NULL));
assert_int_equal(-1, HashCopy(NULL, NULL));
/* Finish */
HashDestroy(&hash);
assert_true(hash == NULL);
}
/*
* Main routine
* Notice the calls to both setup and teardown.
*/
int main()
{
PRINT_TEST_BANNER();
tests_setup();
const UnitTest tests[] =
{
unit_test(test_HashString),
unit_test(test_HashDescriptor),
unit_test(test_HashKey),
unit_test(test_HashCopy)
};
int result = run_tests(tests);
tests_teardown();
return result;
}
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