| // Copyright 2021 The Pigweed 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. |
| |
| #pragma once |
| |
| #include "pw_preprocessor/compiler.h" |
| |
| PW_MODIFY_DIAGNOSTICS_PUSH(); |
| PW_MODIFY_DIAGNOSTIC(ignored, "-Wswitch-enum"); |
| #include "mbedtls/certs.h" |
| #include "mbedtls/ctr_drbg.h" |
| #include "mbedtls/entropy.h" |
| #include "mbedtls/error.h" |
| #include "mbedtls/ssl.h" |
| PW_MODIFY_DIAGNOSTICS_POP(); |
| |
| #include "pw_status/status.h" |
| #include "pw_tls_client/options.h" |
| |
| namespace pw::tls_client::backend { |
| class SessionImplementation { |
| public: |
| SessionImplementation(SessionOptions options); |
| ~SessionImplementation(); |
| Status Setup(); |
| void SetTlsStatus(TLSStatus status) { tls_status_ = status; } |
| TLSStatus GetTlsStatus() { return tls_status_; } |
| |
| // The method is for test only. When given a non-Ok status, it will override |
| // the status returned by entropy source pw::tls_client::GetRandomBytes(); |
| static void SetEntropySourceStatus(Status status); |
| |
| private: |
| // mbedtls entropy |
| mbedtls_entropy_context entropy_ctx_; |
| mbedtls_ctr_drbg_context drbg_ctx_; |
| |
| // SSL data structure |
| mbedtls_ssl_context ssl_ctx_; |
| |
| // Configuration data structure |
| mbedtls_ssl_config ssl_config_; |
| |
| // A copy of the option when creating the client. |
| SessionOptions session_options_; |
| |
| TLSStatus tls_status_ = TLSStatus::kOk; |
| |
| static int MbedTlsWrite(void* ctx, const uint8_t* buf, size_t len); |
| static int MbedTlsRead(void* ctx, unsigned char* buf, size_t len); |
| static int MbedTlsEntropySource(void* ctx, |
| unsigned char* out, |
| size_t len, |
| size_t* output_length); |
| |
| static Status entropy_source_status_; |
| }; |
| |
| } // namespace pw::tls_client::backend |