1 files changed, 65 insertions, 0 deletions

diff --git a/src/mbedTLS++/CallbackSslContext.h b/src/mbedTLS++/CallbackSslContext.h
new file mode 100644
index 000000000..da1abb707
--- /dev/null
+++ b/src/mbedTLS++/CallbackSslContext.h
@@ -0,0 +1,65 @@
+
+// CallbackSslContext.h
+
+// Declares the cCallbackSslContext class representing a SSL context wrapper that uses callbacks to read and write SSL peer data
+
+
+
+
+
+#pragma once
+
+#include "SslContext.h"
+#include "ErrorCodes.h"
+
+
+
+
+
+class cCallbackSslContext :
+	public cSslContext
+{
+public:
+	/** Interface used as a data sink for the SSL peer data. */
+	class cDataCallbacks
+	{
+	public:
+		// Force a virtual destructor in descendants:
+		virtual ~cDataCallbacks() {}
+
+		/** Called when mbedTLS wants to read encrypted data from the SSL peer.
+		The returned value is the number of bytes received, or a mbedTLS error on failure.
+		The implementation can return MBEDTLS_ERR_SSL_WANT_READ or MBEDTLS_ERR_SSL_WANT_WRITE to indicate
+		that there's currently no more data and that there might be more data in the future. In such cases the
+		SSL operation that invoked this call will terminate with the same return value, so that the owner is
+		notified of this condition and can potentially restart the operation later on. */
+		virtual int ReceiveEncrypted(unsigned char * a_Buffer, size_t a_NumBytes) = 0;
+
+		/** Called when mbedTLS wants to write encrypted data to the SSL peer.
+		The returned value is the number of bytes sent, or a mbedTLS error on failure.
+		The implementation can return MBEDTLS_ERR_SSL_WANT_READ or MBEDTLS_ERR_SSL_WANT_WRITE to indicate
+		that there's currently no more data and that there might be more data in the future. In such cases the
+		SSL operation that invoked this call will terminate with the same return value, so that the owner is
+		notified of this condition and can potentially restart the operation later on. */
+		virtual int SendEncrypted(const unsigned char * a_Buffer, size_t a_NumBytes) = 0;
+	} ;
+
+
+	/** Creates a new SSL context with no callbacks assigned */
+	cCallbackSslContext(void);
+
+	/** Creates a new SSL context with the specified callbacks */
+	cCallbackSslContext(cDataCallbacks & a_Callbacks);
+
+protected:
+	/** The callbacks to use to send and receive SSL peer data */
+	cDataCallbacks * m_Callbacks;
+
+	// cSslContext overrides:
+	virtual int ReceiveEncrypted(unsigned char * a_Buffer, size_t a_NumBytes) override;
+	virtual int SendEncrypted(const unsigned char * a_Buffer, size_t a_NumBytes) override;
+};
+
+
+
+