| // Copyright 2021 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. |
| |
| #include <openssl/bytestring.h> |
| #include <openssl/ssl.h> |
| #include <openssl/span.h> |
| |
| #include "../ssl/internal.h" |
| |
| |
| extern "C" int LLVMFuzzerTestOneInput(const uint8_t *buf, size_t len) { |
| static bssl::UniquePtr<SSL_CTX> ctx(SSL_CTX_new(TLS_method())); |
| static bssl::UniquePtr<SSL> ssl(SSL_new(ctx.get())); |
| |
| CBS reader(bssl::Span(buf, len)); |
| CBS encoded_client_hello_inner_cbs; |
| |
| if (!CBS_get_u24_length_prefixed(&reader, &encoded_client_hello_inner_cbs)) { |
| return 0; |
| } |
| |
| bssl::Array<uint8_t> encoded_client_hello_inner; |
| if (!encoded_client_hello_inner.CopyFrom(encoded_client_hello_inner_cbs)) { |
| return 0; |
| } |
| |
| // Use the remaining bytes in |reader| as the ClientHelloOuter. |
| SSL_CLIENT_HELLO client_hello_outer; |
| if (!SSL_parse_client_hello(ssl.get(), &client_hello_outer, CBS_data(&reader), |
| CBS_len(&reader))) { |
| return 0; |
| } |
| |
| // Recover the ClientHelloInner from the EncodedClientHelloInner and |
| // ClientHelloOuter. |
| uint8_t alert_unused; |
| bssl::Array<uint8_t> client_hello_inner; |
| bssl::ssl_decode_client_hello_inner( |
| ssl.get(), &alert_unused, &client_hello_inner, encoded_client_hello_inner, |
| &client_hello_outer); |
| return 0; |
| } |