| // Copyright 2025 The BoringSSL Authors | |
| // | |
| // Licensed under the Apache License, Version 2.0 (the "License"); | |
| // you may not use this file except in compliance with the License. | |
| // You may obtain a copy of the License at | |
| // | |
| // https://www.apache.org/licenses/LICENSE-2.0 | |
| // | |
| // Unless required by applicable law or agreed to in writing, software | |
| // distributed under the License is distributed on an "AS IS" BASIS, | |
| // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
| // See the License for the specific language governing permissions and | |
| // limitations under the License. | |
| #ifndef OPENSSL_HEADER_CRYPTO_TEST_DER_TRAILING_DATA_H | |
| #define OPENSSL_HEADER_CRYPTO_TEST_DER_TRAILING_DATA_H | |
| #include <functional> | |
| #include <openssl/span.h> | |
| BSSL_NAMESPACE_BEGIN | |
| // TestDERTrailingData decodes |in| as an arbitrary DER structure. It then calls | |
| // |func| multiple times on different modified versions of |in|, each time with | |
| // extra data appended to a different constructed element. The extra data will | |
| // be a BER EOC, so this is guaranteed to make the structure invalid. | |
| // | |
| // |func| is expected to parse its argument and then assert with GTest that the | |
| // parser failed. |n|, passed to |func|, is the number of the constructed | |
| // element that was rewritten, following a pre-order numbering from zero. |func| | |
| // should pass it to |SCOPED_TRACE| to aid debugging. | |
| // | |
| // TestDERTrailingData returns whether it successful rewrote |in| and called | |
| // |func| for every constructed element. | |
| bool TestDERTrailingData( | |
| Span<const uint8_t> in, | |
| std::function<void(Span<const uint8_t> rewritten, size_t n)> func); | |
| BSSL_NAMESPACE_END | |
| #endif // OPENSSL_HEADER_CRYPTO_TEST_DER_TRAILING_DATA_H |