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-rw-r--r--nxcomp/src/RenderGenericRequest.cpp270
1 files changed, 270 insertions, 0 deletions
diff --git a/nxcomp/src/RenderGenericRequest.cpp b/nxcomp/src/RenderGenericRequest.cpp
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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2011 NoMachine (http://www.nomachine.com) */
+/* Copyright (c) 2008-2014 Oleksandr Shneyder <o.shneyder@phoca-gmbh.de> */
+/* Copyright (c) 2014-2016 Ulrich Sibiller <uli42@gmx.de> */
+/* Copyright (c) 2014-2016 Mihai Moldovan <ionic@ionic.de> */
+/* Copyright (c) 2011-2016 Mike Gabriel <mike.gabriel@das-netzwerkteam.de>*/
+/* Copyright (c) 2015-2016 Qindel Group (http://www.qindel.com) */
+/* */
+/* NXCOMP, NX protocol compression and NX extensions to this software */
+/* are copyright of the aforementioned persons and companies. */
+/* */
+/* Redistribution and use of the present software is allowed according */
+/* to terms specified in the file LICENSE.nxcomp which comes in the */
+/* source distribution. */
+/* */
+/* All rights reserved. */
+/* */
+/* NOTE: This software has received contributions from various other */
+/* contributors, only the core maintainers and supporters are listed as */
+/* copyright holders. Please contact us, if you feel you should be listed */
+/* as copyright holder, as well. */
+/* */
+/**************************************************************************/
+
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
+#include "NXrender.h"
+
+#include "RenderExtension.h"
+#include "RenderGenericRequest.h"
+
+#include "ClientCache.h"
+
+#include "EncodeBuffer.h"
+#include "DecodeBuffer.h"
+
+#include "WriteBuffer.h"
+
+//
+// Set the verbosity level.
+//
+
+#define PANIC
+#define WARNING
+#undef TEST
+#undef DEBUG
+
+//
+// Here are the methods to handle the messages' content.
+//
+
+int RenderGenericRequestStore::encodeMessage(EncodeBuffer &encodeBuffer, const unsigned char *buffer,
+ const unsigned int size, int bigEndian,
+ ChannelCache *channelCache) const
+{
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Encoding full message.\n"
+ << logofs_flush;
+
+ unsigned char type = *(buffer + 1);
+
+ #endif
+
+ encodeBuffer.encodeCachedValue(size >> 2, 16,
+ clientCache -> renderLengthCache, 5);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Encoding full unhandled message. "
+ << "Type is " << (unsigned int) type << " size is "
+ << size << ".\n" << logofs_flush;
+ #endif
+
+ encodeIntData(encodeBuffer, buffer, 4, size,
+ bigEndian, clientCache);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Encoded full message.\n"
+ << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int RenderGenericRequestStore::decodeMessage(DecodeBuffer &decodeBuffer, unsigned char *&buffer,
+ unsigned int &size, unsigned char type, int bigEndian,
+ WriteBuffer *writeBuffer, ChannelCache *channelCache) const
+{
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoding full message.\n"
+ << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(size, 16,
+ clientCache -> renderLengthCache, 5);
+
+ size <<= 2;
+
+ buffer = writeBuffer -> addMessage(size);
+
+ *(buffer + 1) = type;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoding full unhandled message. "
+ << "Type is " << (unsigned int) type << " size is "
+ << size << ".\n" << logofs_flush;
+ #endif
+
+ decodeIntData(decodeBuffer, buffer, 4, size,
+ bigEndian, clientCache);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded full message.\n"
+ << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+void RenderGenericRequestStore::encodeData(EncodeBuffer &encodeBuffer, const unsigned char *buffer,
+ unsigned int size, int bigEndian,
+ ChannelCache *channelCache) const
+{
+}
+
+void RenderGenericRequestStore::decodeData(DecodeBuffer &decodeBuffer, unsigned char *buffer,
+ unsigned int size, int bigEndian,
+ ChannelCache *channelCache) const
+{
+}
+
+int RenderGenericRequestStore::parseIdentity(Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ #ifdef DEBUG
+ *logofs << name() << ": Parsing identity for message at "
+ << this << ".\n" << logofs_flush;
+ #endif
+
+ RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message;
+
+ unsigned char type = *(buffer + 1);
+
+ renderExtension -> data.any.type = type;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Parsing unhandled identity. "
+ << "Type is " << (unsigned int) renderExtension -> data.any.type
+ << " size is " << renderExtension -> size_ << ".\n"
+ << logofs_flush;
+ #endif
+
+ parseIntData(message, buffer, 4, size, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Parsed identity for message at "
+ << this << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int RenderGenericRequestStore::unparseIdentity(const Message *message, unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ #ifdef DEBUG
+ *logofs << name() << ": Unparsing identity for message at "
+ << this << ".\n" << logofs_flush;
+ #endif
+
+ RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message;
+
+ unsigned char type = renderExtension -> data.any.type;
+
+ *(buffer + 1) = type;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Unparsing unhandled identity. "
+ << "Type is " << (unsigned int) renderExtension -> data.any.type
+ << " size is " << renderExtension -> size_ << ".\n"
+ << logofs_flush;
+ #endif
+
+ unparseIntData(message, buffer, 4, size, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Unparsed identity for message at "
+ << this << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+void RenderGenericRequestStore::identityChecksum(const Message *message, const unsigned char *buffer,
+ unsigned int size, md5_state_t *md5_state,
+ int bigEndian) const
+{
+ //
+ // Include the minor opcode in the checksum.
+ // Because the data offset can be beyond the
+ // real end of the message, we need to include
+ // the size or we will match any message whose
+ // size is less or equal to the data offset.
+ //
+
+ md5_append(md5_state, buffer + 1, 3);
+}
+
+void RenderGenericRequestStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
+ const Message *cachedMessage,
+ ChannelCache *channelCache) const
+{
+ //
+ // Encode the variant part.
+ //
+
+ #ifdef DEBUG
+ *logofs << name() << ": Updating identity for message at "
+ << this << ".\n" << logofs_flush;
+ #endif
+
+ RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Encoding unhandled update. "
+ << "Type is " << (unsigned int) renderExtension -> data.any.type
+ << " size is " << renderExtension -> size_ << ".\n"
+ << logofs_flush;
+ #endif
+
+ updateIntData(encodeBuffer, message, cachedMessage, 4,
+ renderExtension -> size_, channelCache);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Updated identity for message at "
+ << this << ".\n" << logofs_flush;
+ #endif
+}
+
+void RenderGenericRequestStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
+ ChannelCache *channelCache) const
+{
+ #ifdef DEBUG
+ *logofs << name() << ": Updating identity for message at "
+ << this << ".\n" << logofs_flush;
+ #endif
+
+ RenderExtensionMessage *renderExtension = (RenderExtensionMessage *) message;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoding unhandled update. "
+ << "Type is " << (unsigned int) renderExtension -> data.any.type
+ << " size is " << renderExtension -> size_ << ".\n"
+ << logofs_flush;
+ #endif
+
+ updateIntData(decodeBuffer, message, 4,
+ renderExtension -> size_, channelCache);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Updated identity for message at "
+ << this << ".\n" << logofs_flush;
+ #endif
+}
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