| /* |
| * Copyright 2018 The WebRTC Project Authors. All rights reserved. |
| * |
| * Use of this source code is governed by a BSD-style license |
| * that can be found in the LICENSE file in the root of the source |
| * tree. An additional intellectual property rights grant can be found |
| * in the file PATENTS. All contributing project authors may |
| * be found in the AUTHORS file in the root of the source tree. |
| */ |
| |
| #ifndef RTC_BASE_OPENSSLSESSIONCACHE_H_ |
| #define RTC_BASE_OPENSSLSESSIONCACHE_H_ |
| |
| #include <openssl/ossl_typ.h> |
| #include <map> |
| #include <string> |
| |
| #include "rtc_base/constructormagic.h" |
| #include "rtc_base/sslstreamadapter.h" |
| |
| #ifndef OPENSSL_IS_BORINGSSL |
| typedef struct ssl_session_st SSL_SESSION; |
| #endif |
| |
| namespace rtc { |
| |
| // The OpenSSLSessionCache maps hostnames to SSL_SESSIONS. This cache is |
| // owned by the OpenSSLAdapterFactory and is passed down to each OpenSSLAdapter |
| // created with the factory. |
| class OpenSSLSessionCache final { |
| public: |
| // Creates a new OpenSSLSessionCache using the provided the SSL_CTX and |
| // the ssl_mode. The SSL_CTX will be up_refed. ssl_ctx cannot be nullptr, |
| // the constructor immediately dchecks this. |
| OpenSSLSessionCache(SSLMode ssl_mode, SSL_CTX* ssl_ctx); |
| // Frees the cached SSL_SESSIONS and then frees the SSL_CTX. |
| ~OpenSSLSessionCache(); |
| // Looks up a session by hostname. The returned SSL_SESSION is not up_refed. |
| SSL_SESSION* LookupSession(const std::string& hostname) const; |
| // Adds a session to the cache, and up_refs it. Any existing session with the |
| // same hostname is replaced. |
| void AddSession(const std::string& hostname, SSL_SESSION* session); |
| // Returns the true underlying SSL Context that holds these cached sessions. |
| SSL_CTX* GetSSLContext() const; |
| // The SSL Mode tht the OpenSSLSessionCache was constructed with. This cannot |
| // be changed after launch. |
| SSLMode GetSSLMode() const; |
| |
| private: |
| // Holds the SSL Mode that the OpenSSLCache was initialized with. This is |
| // immutable after creation and cannot change. |
| const SSLMode ssl_mode_; |
| /// SSL Context for all shared cached sessions. This SSL_CTX is initialized |
| // with SSL_CTX_set_session_cache_mode(ctx, SSL_SESS_CACHE_CLIENT); Meaning |
| // all client sessions will be added to the cache internal to the context. |
| SSL_CTX* ssl_ctx_ = nullptr; |
| // Map of hostnames to SSL_SESSIONs; holds references to the SSL_SESSIONs, |
| // which are cleaned up when the factory is destroyed. |
| // TODO(juberti): Add LRU eviction to keep the cache from growing forever. |
| std::map<std::string, SSL_SESSION*> sessions_; |
| // The cache should never be copied or assigned directly. |
| RTC_DISALLOW_COPY_AND_ASSIGN(OpenSSLSessionCache); |
| }; |
| |
| } // namespace rtc |
| |
| #endif // RTC_BASE_OPENSSLSESSIONCACHE_H_ |