| // 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> |
| |
| // 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( |
| bssl::Span<const uint8_t> in, |
| std::function<void(bssl::Span<const uint8_t> rewritten, size_t n)> func); |
| |
| #endif // OPENSSL_HEADER_CRYPTO_TEST_DER_TRAILING_DATA_H |
