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-rw-r--r--nxcomp/SendEvent.cpp292
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diff --git a/nxcomp/SendEvent.cpp b/nxcomp/SendEvent.cpp
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+/**************************************************************************/
+/* */
+/* Copyright (c) 2001, 2010 NoMachine, http://www.nomachine.com/. */
+/* */
+/* NXCOMP, NX protocol compression and NX extensions to this software */
+/* are copyright of NoMachine. Redistribution and use of the present */
+/* software is allowed according to terms specified in the file LICENSE */
+/* which comes in the source distribution. */
+/* */
+/* Check http://www.nomachine.com/licensing.html for applicability. */
+/* */
+/* NX and NoMachine are trademarks of Medialogic S.p.A. */
+/* */
+/* All rights reserved. */
+/* */
+/**************************************************************************/
+
+#include "SendEvent.h"
+
+#include "ClientCache.h"
+
+#include "EncodeBuffer.h"
+#include "DecodeBuffer.h"
+
+#include "IntCache.h"
+
+//
+// Set the verbosity level.
+//
+
+#define PANIC
+#define WARNING
+#undef TEST
+#undef DEBUG
+#undef DUMP
+
+//
+// Here are the methods to handle messages' content.
+//
+
+int SendEventStore::parseIdentity(Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ SendEventMessage *sendEvent = (SendEventMessage *) message;
+
+ //
+ // Here is the fingerprint.
+ //
+
+ sendEvent -> propagate = *(buffer + 1);
+
+ sendEvent -> window = GetULONG(buffer + 4, bigEndian);
+ sendEvent -> mask = GetULONG(buffer + 8, bigEndian);
+
+ sendEvent -> code = *(buffer + 12);
+ sendEvent -> byte_data = *(buffer + 13);
+
+ sendEvent -> sequence = GetUINT(buffer + 14, bigEndian);
+
+ sendEvent -> int_data = GetULONG(buffer + 16, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Parsed Identity for message at "
+ << this << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int SendEventStore::unparseIdentity(const Message *message, unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ SendEventMessage *sendEvent = (SendEventMessage *) message;
+
+ //
+ // Fill all the message's fields.
+ //
+
+ *(buffer + 1) = sendEvent -> propagate;
+
+ PutULONG(sendEvent -> window, buffer + 4, bigEndian);
+ PutULONG(sendEvent -> mask, buffer + 8, bigEndian);
+
+ *(buffer + 12) = sendEvent -> code;
+ *(buffer + 13) = sendEvent -> byte_data;
+
+ PutUINT(sendEvent -> sequence, buffer + 14, bigEndian);
+
+ PutULONG(sendEvent -> int_data, buffer + 16, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Unparsed identity for message at "
+ << this << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+void SendEventStore::dumpIdentity(const Message *message) const
+{
+ #ifdef DUMP
+
+ SendEventMessage *sendEvent = (SendEventMessage *) message;
+
+ *logofs << name() << ": Identity propagate " << (unsigned int) sendEvent -> propagate
+ << ", window " << sendEvent -> window << ", mask " << sendEvent -> mask
+ << ", code " << (unsigned int) sendEvent -> code << ", byte_data "
+ << (unsigned int) sendEvent -> byte_data << ", sequence "
+ << sendEvent -> sequence << ", int_data " << sendEvent -> int_data
+ << ", size " << sendEvent -> size_ << ".\n" << logofs_flush;
+
+ #endif
+}
+
+void SendEventStore::identityChecksum(const Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+}
+
+void SendEventStore::updateIdentity(EncodeBuffer &encodeBuffer, const Message *message,
+ const Message *cachedMessage,
+ ChannelCache *channelCache) const
+{
+ SendEventMessage *sendEvent = (SendEventMessage *) message;
+ SendEventMessage *cachedSendEvent = (SendEventMessage *) cachedMessage;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << (unsigned int) sendEvent -> propagate
+ << " as propagate field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeBoolValue(sendEvent -> propagate);
+
+ cachedSendEvent -> propagate = sendEvent -> propagate;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << sendEvent -> window
+ << " as window field.\n" << logofs_flush;
+ #endif
+
+ if (sendEvent -> window == 0 || sendEvent -> window == 1)
+ {
+ encodeBuffer.encodeBoolValue(1);
+
+ encodeBuffer.encodeBoolValue(sendEvent -> window);
+ }
+ else
+ {
+ encodeBuffer.encodeBoolValue(0);
+
+ encodeBuffer.encodeXidValue(sendEvent -> window, clientCache -> windowCache);
+ }
+
+ cachedSendEvent -> window = sendEvent -> window;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << sendEvent -> mask
+ << " as mask field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeCachedValue(sendEvent -> mask, 32,
+ clientCache -> sendEventMaskCache);
+
+ cachedSendEvent -> mask = sendEvent -> mask;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << sendEvent -> code
+ << " as code field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeCachedValue(sendEvent -> code, 8,
+ clientCache -> sendEventCodeCache);
+
+ cachedSendEvent -> code = sendEvent -> code;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << sendEvent -> byte_data
+ << " as byte_data field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeCachedValue(sendEvent -> byte_data, 8,
+ clientCache -> sendEventByteDataCache);
+
+ cachedSendEvent -> byte_data = sendEvent -> byte_data;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << sendEvent -> sequence
+ << " as sequence field.\n" << logofs_flush;
+ #endif
+
+ unsigned int diffSeq = sendEvent -> sequence -
+ clientCache -> sendEventLastSequence;
+
+ clientCache -> sendEventLastSequence = sendEvent -> sequence;
+
+ encodeBuffer.encodeValue(diffSeq, 16, 4);
+
+ cachedSendEvent -> sequence = sendEvent -> sequence;
+
+ #ifdef TEST
+ *logofs << name() << ": Encoding value " << sendEvent -> int_data
+ << " as int_data field.\n" << logofs_flush;
+ #endif
+
+ encodeBuffer.encodeCachedValue(sendEvent -> int_data, 32,
+ clientCache -> sendEventIntDataCache);
+
+ cachedSendEvent -> int_data = sendEvent -> int_data;
+}
+
+void SendEventStore::updateIdentity(DecodeBuffer &decodeBuffer, const Message *message,
+ ChannelCache *channelCache) const
+{
+ SendEventMessage *sendEvent = (SendEventMessage *) message;
+
+ ClientCache *clientCache = (ClientCache *) channelCache;
+
+ unsigned int value;
+
+ decodeBuffer.decodeBoolValue(value);
+
+ sendEvent -> propagate = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << (unsigned int) sendEvent -> propagate
+ << " as propagate field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeBoolValue(value);
+
+ if (value)
+ {
+ decodeBuffer.decodeBoolValue(value);
+ }
+ else
+ {
+ decodeBuffer.decodeXidValue(value, clientCache -> windowCache);
+ }
+
+ sendEvent -> window = value;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << sendEvent -> window
+ << " as window field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(sendEvent -> mask, 32,
+ clientCache -> sendEventMaskCache);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << sendEvent -> mask
+ << " as mask field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(sendEvent -> code, 8,
+ clientCache -> sendEventCodeCache);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << sendEvent -> code
+ << " as code field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(sendEvent -> byte_data, 8,
+ clientCache -> sendEventByteDataCache);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << sendEvent -> byte_data
+ << " as byte_data field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeValue(value, 16, 4);
+
+ clientCache -> sendEventLastSequence += value;
+ clientCache -> sendEventLastSequence &= 0xffff;
+
+ sendEvent -> sequence = clientCache -> sendEventLastSequence;
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << sendEvent -> sequence
+ << " as sequence field.\n" << logofs_flush;
+ #endif
+
+ decodeBuffer.decodeCachedValue(sendEvent -> int_data, 32,
+ clientCache -> sendEventIntDataCache);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Decoded value " << sendEvent -> int_data
+ << " as int_data field.\n" << logofs_flush;
+ #endif
+}
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