From 84941bcc9f25cbe3fd3b2604080d0a1cfd8fbaa7 Mon Sep 17 00:00:00 2001
From: peterbell10 <peterbell10@live.co.uk>
Date: Wed, 30 Aug 2017 15:00:06 +0100
Subject: Update mbedtls to 2.5.1 (#3964)

* Renaming changes:
  * macro prefix "POLARSSL" -> "MBEDTLS"
  * functions now prefixed with "mbedtls_"
  * rename PolarSSL++ -> mbedTLS++
  * rename polarssl submodule

* Use mbedtls' AES-CFB8 implementation.

* Add cSslConfig to wrap mbedtls_ssl_config

* Update cTCPLink and cBlockingSslClientSocket to use cSslConfig

* Use cSslConfig in cHTTPServer

* Use cSslConfig for cMojangAPI::SecureRequest

* CI Fixes

* Set -fomit-frame-pointer on the right target
---
 src/mbedTLS++/BufferedSslContext.cpp | 93 ++++++++++++++++++++++++++++++++++++
 1 file changed, 93 insertions(+)
 create mode 100644 src/mbedTLS++/BufferedSslContext.cpp

(limited to 'src/mbedTLS++/BufferedSslContext.cpp')

diff --git a/src/mbedTLS++/BufferedSslContext.cpp b/src/mbedTLS++/BufferedSslContext.cpp
new file mode 100644
index 000000000..5cdf04323
--- /dev/null
+++ b/src/mbedTLS++/BufferedSslContext.cpp
@@ -0,0 +1,93 @@
+
+// BufferedSslContext.cpp
+
+// Implements the cBufferedSslContext class representing a SSL context with the SSL peer data backed by a cByteBuffer
+
+#include "Globals.h"
+#include "BufferedSslContext.h"
+
+
+
+
+
+cBufferedSslContext::cBufferedSslContext(size_t a_BufferSize):
+	m_OutgoingData(a_BufferSize),
+	m_IncomingData(a_BufferSize)
+{
+}
+
+
+
+
+
+size_t cBufferedSslContext::WriteIncoming(const void * a_Data, size_t a_NumBytes)
+{
+	size_t NumBytes = std::min(m_IncomingData.GetFreeSpace(), a_NumBytes);
+	if (NumBytes > 0)
+	{
+		m_IncomingData.Write(a_Data, NumBytes);
+		return NumBytes;
+	}
+	return 0;
+}
+
+
+
+
+
+size_t cBufferedSslContext::ReadOutgoing(void * a_Data, size_t a_DataMaxSize)
+{
+	size_t NumBytes = std::min(m_OutgoingData.GetReadableSpace(), a_DataMaxSize);
+	if (NumBytes > 0)
+	{
+		m_OutgoingData.ReadBuf(a_Data, NumBytes);
+		m_OutgoingData.CommitRead();
+		return NumBytes;
+	}
+	return 0;
+}
+
+
+
+
+
+int cBufferedSslContext::ReceiveEncrypted(unsigned char * a_Buffer, size_t a_NumBytes)
+{
+	// Called when mbedTLS wants to read encrypted data from the SSL peer
+	// Read the data from the buffer inside this object, where the owner has stored them using WriteIncoming():
+	size_t NumBytes = std::min(a_NumBytes, m_IncomingData.GetReadableSpace());
+	if (NumBytes == 0)
+	{
+		return MBEDTLS_ERR_SSL_WANT_READ;
+	}
+	if (!m_IncomingData.ReadBuf(a_Buffer, NumBytes))
+	{
+		m_IncomingData.ResetRead();
+		return MBEDTLS_ERR_NET_RECV_FAILED;
+	}
+	m_IncomingData.CommitRead();
+	return static_cast<int>(NumBytes);
+}
+
+
+
+
+
+int cBufferedSslContext::SendEncrypted(const unsigned char * a_Buffer, size_t a_NumBytes)
+{
+	// Called when mbedTLS wants to write encrypted data to the SSL peer
+	// Write the data into the buffer inside this object, where the owner can later read them using ReadOutgoing():
+	if (!m_OutgoingData.CanWriteBytes(a_NumBytes))
+	{
+		return MBEDTLS_ERR_SSL_WANT_WRITE;
+	}
+	if (!m_OutgoingData.Write(reinterpret_cast<const char *>(a_Buffer), a_NumBytes))
+	{
+		return MBEDTLS_ERR_NET_SEND_FAILED;
+	}
+	return static_cast<int>(a_NumBytes);
+}
+
+
+
+
-- 
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