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/* $OpenBSD: asn1_string_to_utf8.c,v 1.1 2022/05/16 20:53:20 tb Exp $ */
/*
* Copyright (c) 2022 Theo Buehler <tb@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <err.h>
#include <string.h>
#include <openssl/asn1.h>
struct asn1_string_to_utf8_test_case {
const char *description;
const ASN1_ITEM *item;
const uint8_t der[32];
size_t der_len;
const uint8_t want[32];
int want_len;
};
static const struct asn1_string_to_utf8_test_case tests[] = {
{
.description = "hello",
.item = &ASN1_PRINTABLESTRING_it,
.der = {
0x13, 0x05, 0x68, 0x65, 0x6c, 0x6c, 0x6f,
},
.der_len = 7,
.want = {
0x68, 0x65, 0x6c, 0x6c, 0x6f,
},
.want_len = 5,
},
{
.description = "face with tears of joy",
.item = &ASN1_UTF8STRING_it,
.der = {
0x0c, 0x04, 0xF0, 0x9F, 0x98, 0x82,
},
.der_len = 6,
.want = {
0xF0, 0x9F, 0x98, 0x82,
},
.want_len = 4,
},
{
.description = "hi",
.item = &ASN1_IA5STRING_it,
.der = {
0x16, 0x02, 0x68, 0x69,
},
.der_len = 4,
.want = {
0x68, 0x69,
},
.want_len = 2,
},
};
const size_t N_TESTS = sizeof(tests) / sizeof(tests[0]);
static int
asn1_string_to_utf8_test(const struct asn1_string_to_utf8_test_case *test)
{
ASN1_STRING *str = NULL;
const unsigned char *der;
unsigned char *out = NULL;
int ret;
int failed = 1;
der = test->der;
if ((str = (ASN1_STRING *)ASN1_item_d2i(NULL, &der, test->der_len,
test->item)) == NULL) {
warnx("ASN1_item_d2i failed");
goto err;
}
if ((ret = ASN1_STRING_to_UTF8(&out, str)) != test->want_len) {
warnx("ASN1_STRING_to_UTF8 failed: got %d, want %d", ret,
test->want_len);
goto err;
}
if (memcmp(out, test->want, test->want_len) != 0) {
warnx("memcmp failed");
goto err;
}
failed = 0;
err:
ASN1_STRING_free(str);
free(out);
return failed;
}
static int
asn1_string_to_utf8_tests(void)
{
size_t i;
int failed = 0;
for (i = 0; i < N_TESTS; i++)
failed |= asn1_string_to_utf8_test(&tests[i]);
return failed;
}
int
main(void)
{
int failed = 0;
failed |= asn1_string_to_utf8_tests();
return failed;
}
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