1 /* Copyright (c) 2016, Google Inc. 2 * 3 * Permission to use, copy, modify, and/or distribute this software for any 4 * purpose with or without fee is hereby granted, provided that the above 5 * copyright notice and this permission notice appear in all copies. 6 * 7 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 8 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 9 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 10 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 11 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 12 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 13 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */ 14 15 #include <stdio.h> 16 17 #include <gtest/gtest.h> 18 19 #include <openssl/asn1.h> 20 #include <openssl/err.h> 21 22 #include "../test/test_util.h" 23 24 25 // kTag128 is an ASN.1 structure with a universal tag with number 128. 26 static const uint8_t kTag128[] = { 27 0x1f, 0x81, 0x00, 0x01, 0x00, 28 }; 29 30 // kTag258 is an ASN.1 structure with a universal tag with number 258. 31 static const uint8_t kTag258[] = { 32 0x1f, 0x82, 0x02, 0x01, 0x00, 33 }; 34 35 static_assert(V_ASN1_NEG_INTEGER == 258, 36 "V_ASN1_NEG_INTEGER changed. Update kTag258 to collide with it."); 37 38 // kTagOverflow is an ASN.1 structure with a universal tag with number 2^35-1, 39 // which will not fit in an int. 40 static const uint8_t kTagOverflow[] = { 41 0x1f, 0xff, 0xff, 0xff, 0xff, 0x7f, 0x01, 0x00, 42 }; 43 44 TEST(ASN1Test, LargeTags) { 45 const uint8_t *p = kTag258; 46 bssl::UniquePtr<ASN1_TYPE> obj(d2i_ASN1_TYPE(NULL, &p, sizeof(kTag258))); 47 EXPECT_FALSE(obj) << "Parsed value with illegal tag" << obj->type; 48 ERR_clear_error(); 49 50 p = kTagOverflow; 51 obj.reset(d2i_ASN1_TYPE(NULL, &p, sizeof(kTagOverflow))); 52 EXPECT_FALSE(obj) << "Parsed value with tag overflow" << obj->type; 53 ERR_clear_error(); 54 55 p = kTag128; 56 obj.reset(d2i_ASN1_TYPE(NULL, &p, sizeof(kTag128))); 57 ASSERT_TRUE(obj); 58 EXPECT_EQ(128, obj->type); 59 const uint8_t kZero = 0; 60 EXPECT_EQ(Bytes(&kZero, 1), Bytes(obj->value.asn1_string->data, 61 obj->value.asn1_string->length)); 62 } 63
