static void test_hashing(void)
{
static const struct test_data {
const char *
text;
const char *
result;
int
algo;
} test_data[] = {
{ "moin", "06a998cdd13c50b7875775d4e7e9fa74", WGET_DIGTYPE_MD5 },
{ "moin", "ba3cffcc93a92e08f82c33c55d887666fdf364ae", WGET_DIGTYPE_SHA1 },
{ "moin", "2500d0ed4d0ea1b3ea9f7f57a5f16c2fba8ad15d05d3c057d42f9796f1250169", WGET_DIGTYPE_SHA256 },
{ "moin", "e3ab1c142d6136fd938c810d13deaf47ccdb176687fab916611302ceb6a89787f45fdda2df544fec4f5a9a2a40916f316fcdf57bc27b5b757b7598da24c7c4c4", WGET_DIGTYPE_SHA512 },
};
unsigned char digest[64];
char digest_hex[sizeof(digest) * 2 + 1];
int rc;
for (unsigned it = 0; it < countof(test_data); it++) {
const struct test_data *t = &test_data[it];
if ((rc = wget_hash_fast(t->algo, t->text, strlen(t->text), digest)) == 0) {
int len = wget_hash_get_len(t->algo);
wget_memtohex(digest, len, digest_hex, len * 2 + 1);
if (!strcmp(digest_hex, t->result))
ok++;
else {
failed++;
info_printf("Failed [%u]: wget_hash_fast(%s,%d) -> %s (expected %s)\n", it, t->text, t->algo, digest_hex, t->result);
}
} else {
failed++;
info_printf("Failed [%u]: wget_hash_fast(%s,%d) failed with %d\n", it, t->text, t->algo, rc);
}
}
}
/**
* \param[out] digest_hex Output string buffer
* \param[in] fmt Printf-like format specifier
* \param[in] ... List of arguments
*
* Calculate the hexadecimal MD5 digest from the string generated via the
* printf-style \p fmt and the following arguments.
*
* \p digest_hex must at least have a size of 33 bytes and will be zero terminated.
* 33 calculates from wget_hash_get_len(WGET_DIGTYPE_MD5) * 2 + 1.
*/
void wget_md5_printf_hex(char *digest_hex, const char *fmt, ...)
{
char *plaintext;
va_list args;
size_t len;
int rc;
va_start(args, fmt);
len = wget_vasprintf(&plaintext, fmt, args);
va_end(args);
if (plaintext) {
unsigned char digest[wget_hash_get_len(WGET_DIGTYPE_MD5)];
if ((rc = wget_hash_fast(WGET_DIGTYPE_MD5, plaintext, len, digest)) == 0) {
wget_memtohex(digest, sizeof(digest), digest_hex, sizeof(digest) * 2 + 1);
} else {
*digest_hex = 0;
error_printf(_("Failed to MD5 hash (%d)\n"), rc);
}
xfree(plaintext);
}
}
