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/* Copyright (c) 2016, Google Inc.
*
* Permission to use, copy, modify, and/or 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 <stdio.h>
#include <openssl/asn1.h>
#include <openssl/crypto.h>
#include <openssl/err.h>
#include "../test/scoped_types.h"
namespace bssl {
// kTag128 is an ASN.1 structure with a universal tag with number 128.
static const uint8_t kTag128[] = {
0x1f, 0x81, 0x00, 0x01, 0x00,
};
// kTag258 is an ASN.1 structure with a universal tag with number 258.
static const uint8_t kTag258[] = {
0x1f, 0x82, 0x02, 0x01, 0x00,
};
static_assert(V_ASN1_NEG_INTEGER == 258,
"V_ASN1_NEG_INTEGER changed. Update kTag258 to collide with it.");
// kTagOverflow is an ASN.1 structure with a universal tag with number 2^35-1,
// which will not fit in an int.
static const uint8_t kTagOverflow[] = {
0x1f, 0xff, 0xff, 0xff, 0xff, 0x7f, 0x01, 0x00,
};
static bool TestLargeTags() {
const uint8_t *p = kTag258;
ScopedASN1_TYPE obj(d2i_ASN1_TYPE(NULL, &p, sizeof(kTag258)));
if (obj) {
fprintf(stderr, "Parsed value with illegal tag (type = %d).\n", obj->type);
return false;
}
ERR_clear_error();
p = kTagOverflow;
obj.reset(d2i_ASN1_TYPE(NULL, &p, sizeof(kTagOverflow)));
if (obj) {
fprintf(stderr, "Parsed value with tag overflow (type = %d).\n", obj->type);
return false;
}
ERR_clear_error();
p = kTag128;
obj.reset(d2i_ASN1_TYPE(NULL, &p, sizeof(kTag128)));
if (!obj || obj->type != 128 || obj->value.asn1_string->length != 1 ||
obj->value.asn1_string->data[0] != 0) {
fprintf(stderr, "Failed to parse value with tag 128.\n");
ERR_print_errors_fp(stderr);
return false;
}
return true;
}
} // namespace bssl
int main() {
CRYPTO_library_init();
if (!bssl::TestLargeTags()) {
return 1;
}
printf("PASS\n");
return 0;
}
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