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 #include <limits.h> 19 20 #include <openssl/asn1.h> 21 #include <openssl/err.h> 22 23 #include "../test/test_util.h" 24 25 26 // kTag128 is an ASN.1 structure with a universal tag with number 128. 27 static const uint8_t kTag128[] = { 28 0x1f, 0x81, 0x00, 0x01, 0x00, 29 }; 30 31 // kTag258 is an ASN.1 structure with a universal tag with number 258. 32 static const uint8_t kTag258[] = { 33 0x1f, 0x82, 0x02, 0x01, 0x00, 34 }; 35 36 static_assert(V_ASN1_NEG_INTEGER == 258, 37 "V_ASN1_NEG_INTEGER changed. Update kTag258 to collide with it."); 38 39 // kTagOverflow is an ASN.1 structure with a universal tag with number 2^35-1, 40 // which will not fit in an int. 41 static const uint8_t kTagOverflow[] = { 42 0x1f, 0xff, 0xff, 0xff, 0xff, 0x7f, 0x01, 0x00, 43 }; 44 45 TEST(ASN1Test, LargeTags) { 46 const uint8_t *p = kTag258; 47 bssl::UniquePtr<ASN1_TYPE> obj(d2i_ASN1_TYPE(NULL, &p, sizeof(kTag258))); 48 EXPECT_FALSE(obj) << "Parsed value with illegal tag" << obj->type; 49 ERR_clear_error(); 50 51 p = kTagOverflow; 52 obj.reset(d2i_ASN1_TYPE(NULL, &p, sizeof(kTagOverflow))); 53 EXPECT_FALSE(obj) << "Parsed value with tag overflow" << obj->type; 54 ERR_clear_error(); 55 56 p = kTag128; 57 obj.reset(d2i_ASN1_TYPE(NULL, &p, sizeof(kTag128))); 58 ASSERT_TRUE(obj); 59 EXPECT_EQ(128, obj->type); 60 const uint8_t kZero = 0; 61 EXPECT_EQ(Bytes(&kZero, 1), Bytes(obj->value.asn1_string->data, 62 obj->value.asn1_string->length)); 63 } 64 65 TEST(ASN1Test, IntegerSetting) { 66 bssl::UniquePtr<ASN1_INTEGER> by_bn(M_ASN1_INTEGER_new()); 67 bssl::UniquePtr<ASN1_INTEGER> by_long(M_ASN1_INTEGER_new()); 68 bssl::UniquePtr<ASN1_INTEGER> by_uint64(M_ASN1_INTEGER_new()); 69 bssl::UniquePtr<BIGNUM> bn(BN_new()); 70 71 const std::vector<int64_t> kValues = { 72 LONG_MIN, -2, -1, 0, 1, 2, 0xff, 0x100, 0xffff, 0x10000, LONG_MAX, 73 }; 74 for (const auto &i : kValues) { 75 SCOPED_TRACE(i); 76 77 ASSERT_EQ(1, ASN1_INTEGER_set(by_long.get(), i)); 78 const uint64_t abs = i < 0 ? (0 - (uint64_t) i) : i; 79 ASSERT_TRUE(BN_set_u64(bn.get(), abs)); 80 BN_set_negative(bn.get(), i < 0); 81 ASSERT_TRUE(BN_to_ASN1_INTEGER(bn.get(), by_bn.get())); 82 83 EXPECT_EQ(0, ASN1_INTEGER_cmp(by_bn.get(), by_long.get())); 84 85 if (i >= 0) { 86 ASSERT_EQ(1, ASN1_INTEGER_set_uint64(by_uint64.get(), i)); 87 EXPECT_EQ(0, ASN1_INTEGER_cmp(by_bn.get(), by_uint64.get())); 88 } 89 } 90 } 91
