| /* 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> |
| |
| |
| 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; |
| } |