henrike@webrtc.org | 0e118e7 | 2013-07-10 00:45:36 +0000 | [diff] [blame] | 1 | /* |
| 2 | * libjingle |
| 3 | * Copyright 2004--2005, Google Inc. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions are met: |
| 7 | * |
| 8 | * 1. Redistributions of source code must retain the above copyright notice, |
| 9 | * this list of conditions and the following disclaimer. |
| 10 | * 2. Redistributions in binary form must reproduce the above copyright notice, |
| 11 | * this list of conditions and the following disclaimer in the documentation |
| 12 | * and/or other materials provided with the distribution. |
| 13 | * 3. The name of the author may not be used to endorse or promote products |
| 14 | * derived from this software without specific prior written permission. |
| 15 | * |
| 16 | * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED |
| 17 | * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF |
| 18 | * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO |
| 19 | * EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 20 | * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 21 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; |
| 22 | * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, |
| 23 | * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR |
| 24 | * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF |
| 25 | * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 26 | */ |
| 27 | |
| 28 | #ifndef TALK_BASE_OPENSSLADAPTER_H__ |
| 29 | #define TALK_BASE_OPENSSLADAPTER_H__ |
| 30 | |
| 31 | #include <string> |
| 32 | #include "talk/base/ssladapter.h" |
| 33 | |
| 34 | typedef struct ssl_st SSL; |
| 35 | typedef struct ssl_ctx_st SSL_CTX; |
| 36 | typedef struct x509_store_ctx_st X509_STORE_CTX; |
| 37 | |
| 38 | namespace talk_base { |
| 39 | |
| 40 | /////////////////////////////////////////////////////////////////////////////// |
| 41 | |
| 42 | class OpenSSLAdapter : public SSLAdapter { |
| 43 | public: |
| 44 | static bool InitializeSSL(VerificationCallback callback); |
| 45 | static bool InitializeSSLThread(); |
| 46 | static bool CleanupSSL(); |
| 47 | |
| 48 | OpenSSLAdapter(AsyncSocket* socket); |
| 49 | virtual ~OpenSSLAdapter(); |
| 50 | |
| 51 | virtual int StartSSL(const char* hostname, bool restartable); |
| 52 | virtual int Send(const void* pv, size_t cb); |
| 53 | virtual int Recv(void* pv, size_t cb); |
| 54 | virtual int Close(); |
| 55 | |
| 56 | // Note that the socket returns ST_CONNECTING while SSL is being negotiated. |
| 57 | virtual ConnState GetState() const; |
| 58 | |
| 59 | protected: |
| 60 | virtual void OnConnectEvent(AsyncSocket* socket); |
| 61 | virtual void OnReadEvent(AsyncSocket* socket); |
| 62 | virtual void OnWriteEvent(AsyncSocket* socket); |
| 63 | virtual void OnCloseEvent(AsyncSocket* socket, int err); |
| 64 | |
| 65 | private: |
| 66 | enum SSLState { |
| 67 | SSL_NONE, SSL_WAIT, SSL_CONNECTING, SSL_CONNECTED, SSL_ERROR |
| 68 | }; |
| 69 | |
| 70 | int BeginSSL(); |
| 71 | int ContinueSSL(); |
| 72 | void Error(const char* context, int err, bool signal = true); |
| 73 | void Cleanup(); |
| 74 | |
| 75 | static bool VerifyServerName(SSL* ssl, const char* host, |
| 76 | bool ignore_bad_cert); |
| 77 | bool SSLPostConnectionCheck(SSL* ssl, const char* host); |
| 78 | #if _DEBUG |
| 79 | static void SSLInfoCallback(const SSL* s, int where, int ret); |
| 80 | #endif // !_DEBUG |
| 81 | static int SSLVerifyCallback(int ok, X509_STORE_CTX* store); |
| 82 | static VerificationCallback custom_verify_callback_; |
| 83 | friend class OpenSSLStreamAdapter; // for custom_verify_callback_; |
| 84 | |
| 85 | static bool ConfigureTrustedRootCertificates(SSL_CTX* ctx); |
| 86 | static SSL_CTX* SetupSSLContext(); |
| 87 | |
| 88 | SSLState state_; |
| 89 | bool ssl_read_needs_write_; |
| 90 | bool ssl_write_needs_read_; |
| 91 | // If true, socket will retain SSL configuration after Close. |
| 92 | bool restartable_; |
| 93 | |
| 94 | SSL* ssl_; |
| 95 | SSL_CTX* ssl_ctx_; |
| 96 | std::string ssl_host_name_; |
| 97 | |
| 98 | bool custom_verification_succeeded_; |
| 99 | }; |
| 100 | |
| 101 | ///////////////////////////////////////////////////////////////////////////// |
| 102 | |
| 103 | } // namespace talk_base |
| 104 | |
| 105 | #endif // TALK_BASE_OPENSSLADAPTER_H__ |