1 /*
2 * Copyright (C) 2013 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #define LOG_TAG "asn1_decoder_test"
18
19 #include <cutils/log.h>
20 #include <gtest/gtest.h>
21 #include <stdint.h>
22 #include <unistd.h>
23
24 #include "asn1_decoder.h"
25
26 namespace android {
27
28 class Asn1DecoderTest : public testing::Test {
29 };
30
TEST_F(Asn1DecoderTest,Empty_Failure)31 TEST_F(Asn1DecoderTest, Empty_Failure) {
32 uint8_t empty[] = { };
33 asn1_context_t* ctx = asn1_context_new(empty, sizeof(empty));
34
35 EXPECT_EQ(NULL, asn1_constructed_get(ctx));
36 EXPECT_FALSE(asn1_constructed_skip_all(ctx));
37 EXPECT_EQ(0, asn1_constructed_type(ctx));
38 EXPECT_EQ(NULL, asn1_sequence_get(ctx));
39 EXPECT_EQ(NULL, asn1_set_get(ctx));
40 EXPECT_FALSE(asn1_sequence_next(ctx));
41
42 uint8_t* junk;
43 size_t length;
44 EXPECT_FALSE(asn1_oid_get(ctx, &junk, &length));
45 EXPECT_FALSE(asn1_octet_string_get(ctx, &junk, &length));
46
47 asn1_context_free(ctx);
48 }
49
TEST_F(Asn1DecoderTest,ConstructedGet_TruncatedLength_Failure)50 TEST_F(Asn1DecoderTest, ConstructedGet_TruncatedLength_Failure) {
51 uint8_t truncated[] = { 0xA0, 0x82, };
52 asn1_context_t* ctx = asn1_context_new(truncated, sizeof(truncated));
53 EXPECT_EQ(NULL, asn1_constructed_get(ctx));
54 asn1_context_free(ctx);
55 }
56
TEST_F(Asn1DecoderTest,ConstructedGet_LengthTooBig_Failure)57 TEST_F(Asn1DecoderTest, ConstructedGet_LengthTooBig_Failure) {
58 uint8_t truncated[] = { 0xA0, 0x8a, 0xA5, 0x5A, 0xA5, 0x5A,
59 0xA5, 0x5A, 0xA5, 0x5A, 0xA5, 0x5A, };
60 asn1_context_t* ctx = asn1_context_new(truncated, sizeof(truncated));
61 EXPECT_EQ(NULL, asn1_constructed_get(ctx));
62 asn1_context_free(ctx);
63 }
64
TEST_F(Asn1DecoderTest,ConstructedGet_TooSmallForChild_Failure)65 TEST_F(Asn1DecoderTest, ConstructedGet_TooSmallForChild_Failure) {
66 uint8_t data[] = { 0xA5, 0x02, 0x06, 0x01, 0x01, };
67 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
68 asn1_context_t* ptr = asn1_constructed_get(ctx);
69 ASSERT_NE((asn1_context_t*)NULL, ptr);
70 EXPECT_EQ(5, asn1_constructed_type(ptr));
71 uint8_t* oid;
72 size_t length;
73 EXPECT_FALSE(asn1_oid_get(ptr, &oid, &length));
74 asn1_context_free(ptr);
75 asn1_context_free(ctx);
76 }
77
TEST_F(Asn1DecoderTest,ConstructedGet_Success)78 TEST_F(Asn1DecoderTest, ConstructedGet_Success) {
79 uint8_t data[] = { 0xA5, 0x03, 0x06, 0x01, 0x01, };
80 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
81 asn1_context_t* ptr = asn1_constructed_get(ctx);
82 ASSERT_NE((asn1_context_t*)NULL, ptr);
83 EXPECT_EQ(5, asn1_constructed_type(ptr));
84 uint8_t* oid;
85 size_t length;
86 ASSERT_TRUE(asn1_oid_get(ptr, &oid, &length));
87 EXPECT_EQ(1U, length);
88 EXPECT_EQ(0x01U, *oid);
89 asn1_context_free(ptr);
90 asn1_context_free(ctx);
91 }
92
TEST_F(Asn1DecoderTest,ConstructedSkipAll_TruncatedLength_Failure)93 TEST_F(Asn1DecoderTest, ConstructedSkipAll_TruncatedLength_Failure) {
94 uint8_t truncated[] = { 0xA2, 0x82, };
95 asn1_context_t* ctx = asn1_context_new(truncated, sizeof(truncated));
96 EXPECT_FALSE(asn1_constructed_skip_all(ctx));
97 asn1_context_free(ctx);
98 }
99
TEST_F(Asn1DecoderTest,ConstructedSkipAll_Success)100 TEST_F(Asn1DecoderTest, ConstructedSkipAll_Success) {
101 uint8_t data[] = { 0xA0, 0x03, 0x02, 0x01, 0x01,
102 0xA1, 0x03, 0x02, 0x01, 0x01,
103 0x06, 0x01, 0xA5, };
104 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
105 ASSERT_TRUE(asn1_constructed_skip_all(ctx));
106 uint8_t* oid;
107 size_t length;
108 ASSERT_TRUE(asn1_oid_get(ctx, &oid, &length));
109 EXPECT_EQ(1U, length);
110 EXPECT_EQ(0xA5U, *oid);
111 asn1_context_free(ctx);
112 }
113
TEST_F(Asn1DecoderTest,SequenceGet_TruncatedLength_Failure)114 TEST_F(Asn1DecoderTest, SequenceGet_TruncatedLength_Failure) {
115 uint8_t truncated[] = { 0x30, 0x82, };
116 asn1_context_t* ctx = asn1_context_new(truncated, sizeof(truncated));
117 EXPECT_EQ(NULL, asn1_sequence_get(ctx));
118 asn1_context_free(ctx);
119 }
120
TEST_F(Asn1DecoderTest,SequenceGet_TooSmallForChild_Failure)121 TEST_F(Asn1DecoderTest, SequenceGet_TooSmallForChild_Failure) {
122 uint8_t data[] = { 0x30, 0x02, 0x06, 0x01, 0x01, };
123 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
124 asn1_context_t* ptr = asn1_sequence_get(ctx);
125 ASSERT_NE((asn1_context_t*)NULL, ptr);
126 uint8_t* oid;
127 size_t length;
128 EXPECT_FALSE(asn1_oid_get(ptr, &oid, &length));
129 asn1_context_free(ptr);
130 asn1_context_free(ctx);
131 }
132
TEST_F(Asn1DecoderTest,SequenceGet_Success)133 TEST_F(Asn1DecoderTest, SequenceGet_Success) {
134 uint8_t data[] = { 0x30, 0x03, 0x06, 0x01, 0x01, };
135 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
136 asn1_context_t* ptr = asn1_sequence_get(ctx);
137 ASSERT_NE((asn1_context_t*)NULL, ptr);
138 uint8_t* oid;
139 size_t length;
140 ASSERT_TRUE(asn1_oid_get(ptr, &oid, &length));
141 EXPECT_EQ(1U, length);
142 EXPECT_EQ(0x01U, *oid);
143 asn1_context_free(ptr);
144 asn1_context_free(ctx);
145 }
146
TEST_F(Asn1DecoderTest,SetGet_TruncatedLength_Failure)147 TEST_F(Asn1DecoderTest, SetGet_TruncatedLength_Failure) {
148 uint8_t truncated[] = { 0x31, 0x82, };
149 asn1_context_t* ctx = asn1_context_new(truncated, sizeof(truncated));
150 EXPECT_EQ(NULL, asn1_set_get(ctx));
151 asn1_context_free(ctx);
152 }
153
TEST_F(Asn1DecoderTest,SetGet_TooSmallForChild_Failure)154 TEST_F(Asn1DecoderTest, SetGet_TooSmallForChild_Failure) {
155 uint8_t data[] = { 0x31, 0x02, 0x06, 0x01, 0x01, };
156 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
157 asn1_context_t* ptr = asn1_set_get(ctx);
158 ASSERT_NE((asn1_context_t*)NULL, ptr);
159 uint8_t* oid;
160 size_t length;
161 EXPECT_FALSE(asn1_oid_get(ptr, &oid, &length));
162 asn1_context_free(ptr);
163 asn1_context_free(ctx);
164 }
165
TEST_F(Asn1DecoderTest,SetGet_Success)166 TEST_F(Asn1DecoderTest, SetGet_Success) {
167 uint8_t data[] = { 0x31, 0x03, 0x06, 0x01, 0xBA, };
168 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
169 asn1_context_t* ptr = asn1_set_get(ctx);
170 ASSERT_NE((asn1_context_t*)NULL, ptr);
171 uint8_t* oid;
172 size_t length;
173 ASSERT_TRUE(asn1_oid_get(ptr, &oid, &length));
174 EXPECT_EQ(1U, length);
175 EXPECT_EQ(0xBAU, *oid);
176 asn1_context_free(ptr);
177 asn1_context_free(ctx);
178 }
179
TEST_F(Asn1DecoderTest,OidGet_LengthZero_Failure)180 TEST_F(Asn1DecoderTest, OidGet_LengthZero_Failure) {
181 uint8_t data[] = { 0x06, 0x00, 0x01, };
182 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
183 uint8_t* oid;
184 size_t length;
185 EXPECT_FALSE(asn1_oid_get(ctx, &oid, &length));
186 asn1_context_free(ctx);
187 }
188
TEST_F(Asn1DecoderTest,OidGet_TooSmall_Failure)189 TEST_F(Asn1DecoderTest, OidGet_TooSmall_Failure) {
190 uint8_t data[] = { 0x06, 0x01, };
191 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
192 uint8_t* oid;
193 size_t length;
194 EXPECT_FALSE(asn1_oid_get(ctx, &oid, &length));
195 asn1_context_free(ctx);
196 }
197
TEST_F(Asn1DecoderTest,OidGet_Success)198 TEST_F(Asn1DecoderTest, OidGet_Success) {
199 uint8_t data[] = { 0x06, 0x01, 0x99, };
200 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
201 uint8_t* oid;
202 size_t length;
203 ASSERT_TRUE(asn1_oid_get(ctx, &oid, &length));
204 EXPECT_EQ(1U, length);
205 EXPECT_EQ(0x99U, *oid);
206 asn1_context_free(ctx);
207 }
208
TEST_F(Asn1DecoderTest,OctetStringGet_LengthZero_Failure)209 TEST_F(Asn1DecoderTest, OctetStringGet_LengthZero_Failure) {
210 uint8_t data[] = { 0x04, 0x00, 0x55, };
211 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
212 uint8_t* string;
213 size_t length;
214 ASSERT_FALSE(asn1_octet_string_get(ctx, &string, &length));
215 asn1_context_free(ctx);
216 }
217
TEST_F(Asn1DecoderTest,OctetStringGet_TooSmall_Failure)218 TEST_F(Asn1DecoderTest, OctetStringGet_TooSmall_Failure) {
219 uint8_t data[] = { 0x04, 0x01, };
220 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
221 uint8_t* string;
222 size_t length;
223 ASSERT_FALSE(asn1_octet_string_get(ctx, &string, &length));
224 asn1_context_free(ctx);
225 }
226
TEST_F(Asn1DecoderTest,OctetStringGet_Success)227 TEST_F(Asn1DecoderTest, OctetStringGet_Success) {
228 uint8_t data[] = { 0x04, 0x01, 0xAA, };
229 asn1_context_t* ctx = asn1_context_new(data, sizeof(data));
230 uint8_t* string;
231 size_t length;
232 ASSERT_TRUE(asn1_octet_string_get(ctx, &string, &length));
233 EXPECT_EQ(1U, length);
234 EXPECT_EQ(0xAAU, *string);
235 asn1_context_free(ctx);
236 }
237
238 } // namespace android
239