In SSL socket, use timeout handler of underlying socket. Throw exception when reading from/writing to disconnected SSL socket.

src/vmime/exception.cpp

@@ -327,6 +327,19 @@ exception* socket_exception::clone() const { return new socket_exception(*this);
 const char* socket_exception::name() const throw() { return "socket_exception"; }
 
 
+//
+// socket_not_connected_exception
+//
+
+socket_not_connected_exception::~socket_not_connected_exception() throw() {}
+socket_not_connected_exception::socket_not_connected_exception(const string& what, const exception& other)
+	: socket_exception(what.empty()
+		? "Socket is not connected." : what, other) {}
+
+exception* socket_not_connected_exception::clone() const { return new socket_not_connected_exception(*this); }
+const char* socket_not_connected_exception::name() const throw() { return "socket_not_connected_exception"; }
+
+
 //
 // connection_error
 //

src/vmime/exception.hpp

@@ -370,6 +370,23 @@ public:
 };
 
 
+/** Socket not connected: you are trying to write to/read from a socket which
+  * is not connected to a peer.
+  */
+
+class VMIME_EXPORT socket_not_connected_exception : public socket_exception
+{
+public:
+
+	socket_not_connected_exception(const string& what = "", const exception& other = NO_EXCEPTION);
+	~socket_not_connected_exception() throw();
+
+	exception* clone() const;
+	const char* name() const throw();
+
+};
+
+
 /** Error while connecting to the server: this may be a DNS resolution error
   * or a connection error (for example, time-out while connecting).
   */

src/vmime/net/imap/IMAPConnection.cpp

@@ -482,7 +482,7 @@ void IMAPConnection::startTLS()
 		shared_ptr <tls::TLSSocket> tlsSocket =
 			tlsSession->getSocket(m_socket);
 
-		tlsSocket->handshake(m_timeoutHandler);
+		tlsSocket->handshake();
 
 		m_socket = tlsSocket;
 		m_parser->setSocket(m_socket);

src/vmime/net/pop3/POP3Connection.cpp

@@ -552,7 +552,7 @@ void POP3Connection::startTLS()
 		shared_ptr <tls::TLSSocket> tlsSocket =
 			tlsSession->getSocket(m_socket);
 
-		tlsSocket->handshake(m_timeoutHandler);
+		tlsSocket->handshake();
 
 		m_socket = tlsSocket;
 

src/vmime/net/socket.hpp

@@ -141,6 +141,12 @@ public:
 	  */
 	virtual const string getPeerAddress() const = 0;
 
+	/** Return the timeout handler associated with this socket.
+	  *
+	  * @return timeout handler, or NULL if none is set
+	  */
+	virtual shared_ptr <timeoutHandler> getTimeoutHandler() = 0;
+
 protected:
 
 	socket() { }

src/vmime/net/tls/TLSSocket.hpp

@@ -67,7 +67,7 @@ public:
 	  * during the negociation process, exceptions::operation_timed_out
 	  * if a time-out occurs
 	  */
-	virtual void handshake(shared_ptr <timeoutHandler> toHandler = null) = 0;
+	virtual void handshake() = 0;
 
 	/** Return the peer's certificate (chain) as sent by the peer.
 	  *

src/vmime/net/tls/gnutls/TLSSocket_GnuTLS.cpp

@@ -87,11 +87,17 @@ TLSSocket_GnuTLS::~TLSSocket_GnuTLS()
 
 void TLSSocket_GnuTLS::connect(const string& address, const port_t port)
 {
-	m_wrapped->connect(address, port);
+	try
+	{
+		m_wrapped->connect(address, port);
 
-	handshake(null);
-
-	m_connected = true;
+		handshake();
+	}
+	catch (...)
+	{
+		disconnect();
+		throw;
+	}
 }
 
 
@@ -132,6 +138,12 @@ const string TLSSocket_GnuTLS::getPeerAddress() const
 }
 
 
+shared_ptr <timeoutHandler> TLSSocket_GnuTLS::getTimeoutHandler()
+{
+	return m_wrapped->getTimeoutHandler();
+}
+
+
 void TLSSocket_GnuTLS::receive(string& buffer)
 {
 	const size_t size = receiveRaw(m_buffer, sizeof(m_buffer));
@@ -239,14 +251,15 @@ unsigned int TLSSocket_GnuTLS::getStatus() const
 }
 
 
-void TLSSocket_GnuTLS::handshake(shared_ptr <timeoutHandler> toHandler)
+void TLSSocket_GnuTLS::handshake()
 {
+	shared_ptr <timeoutHandler> toHandler = m_wrapped->getTimeoutHandler();
+
 	if (toHandler)
 		toHandler->resetTimeOut();
 
 	// Start handshaking process
 	m_handshaking = true;
-	m_toHandler = toHandler;
 
 	try
 	{
@@ -280,13 +293,10 @@ void TLSSocket_GnuTLS::handshake(shared_ptr <timeoutHandler> toHandler)
 	catch (...)
 	{
 		m_handshaking = false;
-		m_toHandler = null;
-
 		throw;
 	}
 
 	m_handshaking = false;
-	m_toHandler = null;
 
 	// Verify server's certificate(s)
 	shared_ptr <security::cert::certificateChain> certs = getPeerCertificates();
@@ -338,6 +348,8 @@ ssize_t TLSSocket_GnuTLS::gnutlsPullFunc
 		// returns -1 and errno is set to EGAIN...
 		if (sok->m_handshaking)
 		{
+			shared_ptr <timeoutHandler> toHandler = sok->m_wrapped->getTimeoutHandler();
+
 			while (true)
 			{
 				const ssize_t ret = static_cast <ssize_t>
@@ -355,12 +367,12 @@ ssize_t TLSSocket_GnuTLS::gnutlsPullFunc
 				}
 
 				// Check whether the time-out delay is elapsed
-				if (sok->m_toHandler && sok->m_toHandler->isTimeOut())
+				if (toHandler && toHandler->isTimeOut())
 				{
-					if (!sok->m_toHandler->handleTimeOut())
+					if (!toHandler->handleTimeOut())
 						throw exceptions::operation_timed_out();
 
-					sok->m_toHandler->resetTimeOut();
+					toHandler->resetTimeOut();
 				}
 			}
 		}

src/vmime/net/tls/gnutls/TLSSocket_GnuTLS.hpp

@@ -54,7 +54,7 @@ public:
 	~TLSSocket_GnuTLS();
 
 
-	void handshake(shared_ptr <timeoutHandler> toHandler = null);
+	void handshake();
 
 	shared_ptr <security::cert::certificateChain> getPeerCertificates() const;
 
@@ -78,6 +78,8 @@ public:
 	const string getPeerName() const;
 	const string getPeerAddress() const;
 
+	shared_ptr <timeoutHandler> getTimeoutHandler();
+
 private:
 
 	void internalThrow();
@@ -99,7 +101,6 @@ private:
 	byte_t m_buffer[65536];
 
 	bool m_handshaking;
-	shared_ptr <timeoutHandler> m_toHandler;
 
 	exception* m_ex;
 

src/vmime/net/tls/openssl/TLSSocket_OpenSSL.cpp

@@ -87,12 +87,6 @@ TLSSocket_OpenSSL::~TLSSocket_OpenSSL()
 	try
 	{
 		disconnect();
-
-		if (m_ssl)
-		{
-			SSL_free(m_ssl);
-			m_ssl = 0;
-		}
 	}
 	catch (...)
 	{
@@ -130,32 +124,41 @@ void TLSSocket_OpenSSL::createSSLHandle()
 
 void TLSSocket_OpenSSL::connect(const string& address, const port_t port)
 {
-	m_wrapped->connect(address, port);
+	try
+	{
+		m_wrapped->connect(address, port);
 
-	createSSLHandle();
+		createSSLHandle();
 
-	handshake(null);
-
-	m_connected = true;
+		handshake();
+	}
+	catch (...)
+	{
+		disconnect();
+		throw;
+	}
 }
 
 
 void TLSSocket_OpenSSL::disconnect()
 {
+	if (m_ssl)
+	{
+		// Don't shut down the socket more than once.
+		int shutdownState = SSL_get_shutdown(m_ssl);
+		bool shutdownSent = (shutdownState & SSL_SENT_SHUTDOWN) == SSL_SENT_SHUTDOWN;
+
+		if (!shutdownSent)
+			SSL_shutdown(m_ssl);
+
+		SSL_free(m_ssl);
+		m_ssl = 0;
+	}
+
 	if (m_connected)
 	{
-		if (m_ssl)
-		{
-			// Don't shut down the socket more than once.
-			int shutdownState = SSL_get_shutdown(m_ssl);
-			bool shutdownSent = (shutdownState & SSL_SENT_SHUTDOWN) == SSL_SENT_SHUTDOWN;
-
-			if (!shutdownSent)
-				SSL_shutdown(m_ssl);
-		}
-
-		m_wrapped->disconnect();
 		m_connected = false;
+		m_wrapped->disconnect();
 	}
 }
 
@@ -184,6 +187,12 @@ const string TLSSocket_OpenSSL::getPeerAddress() const
 }
 
 
+shared_ptr <timeoutHandler> TLSSocket_OpenSSL::getTimeoutHandler()
+{
+	return m_wrapped->getTimeoutHandler();
+}
+
+
 void TLSSocket_OpenSSL::receive(string& buffer)
 {
 	const size_t size = receiveRaw(m_buffer, sizeof(m_buffer));
@@ -209,6 +218,9 @@ void TLSSocket_OpenSSL::send(const char* str)
 
 size_t TLSSocket_OpenSSL::receiveRaw(byte_t* buffer, const size_t count)
 {
+	if (!m_ssl)
+		throw exceptions::socket_not_connected_exception();
+
 	m_status &= ~STATUS_WOULDBLOCK;
 
 	int rc = SSL_read(m_ssl, buffer, static_cast <int>(count));
@@ -235,6 +247,9 @@ size_t TLSSocket_OpenSSL::receiveRaw(byte_t* buffer, const size_t count)
 
 void TLSSocket_OpenSSL::sendRaw(const byte_t* buffer, const size_t count)
 {
+	if (!m_ssl)
+		throw exceptions::socket_not_connected_exception();
+
 	m_status &= ~STATUS_WOULDBLOCK;
 
 	for (size_t size = count ; size > 0 ; )
@@ -264,6 +279,9 @@ void TLSSocket_OpenSSL::sendRaw(const byte_t* buffer, const size_t count)
 
 size_t TLSSocket_OpenSSL::sendRawNonBlocking(const byte_t* buffer, const size_t count)
 {
+	if (!m_ssl)
+		throw exceptions::socket_not_connected_exception();
+
 	m_status &= ~STATUS_WOULDBLOCK;
 
 	int rc = SSL_write(m_ssl, buffer, static_cast <int>(count));
@@ -288,14 +306,17 @@ size_t TLSSocket_OpenSSL::sendRawNonBlocking(const byte_t* buffer, const size_t
 }
 
 
-void TLSSocket_OpenSSL::handshake(shared_ptr <timeoutHandler> toHandler)
+void TLSSocket_OpenSSL::handshake()
 {
+	if (!m_ssl)
+		throw exceptions::socket_not_connected_exception();
+
+	shared_ptr <timeoutHandler> toHandler = m_wrapped->getTimeoutHandler();
+
 	if (toHandler)
 		toHandler->resetTimeOut();
 
 	// Start handshaking process
-	m_toHandler = toHandler;
-
 	if (!m_ssl)
 		createSSLHandle();
 
@@ -318,25 +339,20 @@ void TLSSocket_OpenSSL::handshake(shared_ptr <timeoutHandler> toHandler)
  			}
 
 			// Check whether the time-out delay is elapsed
-			if (m_toHandler && m_toHandler->isTimeOut())
+			if (toHandler && toHandler->isTimeOut())
 			{
-				if (!m_toHandler->handleTimeOut())
+				if (!toHandler->handleTimeOut())
 					throw exceptions::operation_timed_out();
 
-				m_toHandler->resetTimeOut();
+				toHandler->resetTimeOut();
 			}
 		}
 	}
 	catch (...)
 	{
-		SSL_free(m_ssl);
-		m_ssl = 0;
-		m_toHandler = null;
 		throw;
 	}
 
-	m_toHandler = null;
-
 	// Verify server's certificate(s)
 	shared_ptr <security::cert::certificateChain> certs = getPeerCertificates();
 
@@ -401,6 +417,8 @@ void TLSSocket_OpenSSL::handleError(int rc)
 	switch (sslError)
 	{
 	case SSL_ERROR_ZERO_RETURN:
+
+		disconnect();
 		return;
 
 	case SSL_ERROR_SYSCALL:
@@ -413,8 +431,7 @@ void TLSSocket_OpenSSL::handleError(int rc)
 			}
 			else
 			{
-				vmime::string msg;
-				std::ostringstream oss(msg);
+				std::ostringstream oss;
 				oss << "The BIO reported an error: " << rc;
 				oss.flush();
 				throw exceptions::tls_exception(oss.str());

src/vmime/net/tls/openssl/TLSSocket_OpenSSL.hpp

@@ -58,7 +58,7 @@ public:
 	~TLSSocket_OpenSSL();
 
 
-	void handshake(shared_ptr <timeoutHandler> toHandler = null);
+	void handshake();
 
 	shared_ptr <security::cert::certificateChain> getPeerCertificates() const;
 
@@ -82,6 +82,8 @@ public:
 	const string getPeerName() const;
 	const string getPeerAddress() const;
 
+	shared_ptr <timeoutHandler> getTimeoutHandler();
+
 private:
 
 	static BIO_METHOD sm_customBIOMethod;
@@ -108,8 +110,6 @@ private:
 
 	byte_t m_buffer[65536];
 
-	shared_ptr <timeoutHandler> m_toHandler;
-
 	SSL* m_ssl;
 
 	unsigned long m_status;

src/vmime/platforms/posix/posixSocket.cpp

@@ -654,6 +654,12 @@ unsigned int posixSocket::getStatus() const
 }
 
 
+shared_ptr <net::timeoutHandler> posixSocket::getTimeoutHandler()
+{
+	return m_timeoutHandler;
+}
+
+
 
 //
 // posixSocketFactory

src/vmime/platforms/posix/posixSocket.hpp

@@ -65,6 +65,8 @@ public:
 	const string getPeerName() const;
 	const string getPeerAddress() const;
 
+	shared_ptr <net::timeoutHandler> getTimeoutHandler();
+
 protected:
 
 	static void throwSocketError(const int err);

src/vmime/platforms/windows/windowsSocket.cpp

@@ -460,6 +460,12 @@ void windowsSocket::waitForData(const WaitOpType t, bool& timedOut)
 }
 
 
+shared_ptr <net::timeoutHandler> windowsSocket::getTimeoutHandler()
+{
+	return m_timeoutHandler;
+}
+
+
 
 //
 // posixSocketFactory

src/vmime/platforms/windows/windowsSocket.hpp

@@ -69,6 +69,8 @@ public:
 	const string getPeerName() const;
 	const string getPeerAddress() const;
 
+	shared_ptr <net::timeoutHandler> getTimeoutHandler();
+
 protected:
 
 	void throwSocketError(const int err);

src/vmime/security/sasl/SASLSocket.cpp

@@ -96,6 +96,12 @@ const string SASLSocket::getPeerAddress() const
 }
 
 
+shared_ptr <net::timeoutHandler> SASLSocket::getTimeoutHandler()
+{
+	return m_wrapped->getTimeoutHandler();
+}
+
+
 void SASLSocket::receive(string& buffer)
 {
 	const size_t n = receiveRaw(m_recvBuffer, sizeof(m_recvBuffer));

src/vmime/security/sasl/SASLSocket.hpp

@@ -73,6 +73,8 @@ public:
 	const string getPeerName() const;
 	const string getPeerAddress() const;
 
+	shared_ptr <net::timeoutHandler> getTimeoutHandler();
+
 private:
 
 	shared_ptr <SASLSession> m_session;

tests/testUtils.cpp

@@ -79,6 +79,12 @@ const vmime::string testSocket::getPeerAddress() const
 }
 
 
+vmime::shared_ptr <vmime::net::timeoutHandler> testSocket::getTimeoutHandler()
+{
+	return vmime::null;
+}
+
+
 void testSocket::receive(vmime::string& buffer)
 {
 	buffer = m_inBuffer;

tests/testUtils.hpp

@@ -263,6 +263,8 @@ public:
 	const vmime::string getPeerName() const;
 	const vmime::string getPeerAddress() const;
 
+	vmime::shared_ptr <vmime::net::timeoutHandler> getTimeoutHandler();
+
 	/** Send data to client.
 	  *
 	  * @param buffer data to send