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-rw-r--r--nxcomp/src/ConfigureWindow.cpp142
1 files changed, 142 insertions, 0 deletions
diff --git a/nxcomp/src/ConfigureWindow.cpp b/nxcomp/src/ConfigureWindow.cpp
new file mode 100644
index 000000000..32d3153b9
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+++ b/nxcomp/src/ConfigureWindow.cpp
@@ -0,0 +1,142 @@
+/**************************************************************************/
+/* */
+/* 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 "ConfigureWindow.h"
+
+#include "ClientCache.h"
+
+#include "EncodeBuffer.h"
+#include "DecodeBuffer.h"
+
+//
+// Set the verbosity level.
+//
+
+#define PANIC
+#define WARNING
+#undef TEST
+#undef DEBUG
+#undef DUMP
+
+//
+// Here are the methods to handle messages' content.
+//
+
+int ConfigureWindowStore::parseIdentity(Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ ConfigureWindowMessage *configureWindow = (ConfigureWindowMessage *) message;
+
+ //
+ // Here is the fingerprint.
+ //
+
+ configureWindow -> window = GetULONG(buffer + 4, bigEndian);
+
+ configureWindow -> value_mask = GetUINT(buffer + 8, bigEndian);
+
+ //
+ // To increase effectiveness of the caching algorithm
+ // we remove the unused bytes carried in the data part.
+ //
+
+ if ((int) size > dataOffset)
+ {
+ #ifdef DEBUG
+ *logofs << name() << ": Removing unused bytes from the data payload.\n" << logofs_flush;
+ #endif
+
+ configureWindow -> value_mask &= (1 << 7) - 1;
+
+ unsigned int mask = 0x1;
+ unsigned char *source = (unsigned char *) buffer + CONFIGUREWINDOW_DATA_OFFSET;
+ unsigned long value = 0;
+
+ for (unsigned int i = 0; i < 7; i++)
+ {
+ if (configureWindow -> value_mask & mask)
+ {
+ value = GetULONG(source, bigEndian);
+
+ value &= (1 << CONFIGUREWINDOW_FIELD_WIDTH[i]) - 1;
+
+ PutULONG(value, source, bigEndian);
+
+ source += 4;
+ }
+ mask <<= 1;
+ }
+ }
+
+ #ifdef DEBUG
+ *logofs << name() << ": Parsed Identity for message at " << this << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+int ConfigureWindowStore::unparseIdentity(const Message *message, unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ ConfigureWindowMessage *configureWindow = (ConfigureWindowMessage *) message;
+
+ //
+ // Fill all the message's fields.
+ //
+
+ PutULONG(configureWindow -> window, buffer + 4, bigEndian);
+
+ PutUINT(configureWindow -> value_mask, buffer + 8, bigEndian);
+
+ #ifdef DEBUG
+ *logofs << name() << ": Unparsed identity for message at " << this << ".\n" << logofs_flush;
+ #endif
+
+ return 1;
+}
+
+void ConfigureWindowStore::dumpIdentity(const Message *message) const
+{
+ #ifdef DUMP
+
+ ConfigureWindowMessage *configureWindow = (ConfigureWindowMessage *) message;
+
+ *logofs << "ConfigureWindow: window " << configureWindow -> window
+ << ", value_mask " << configureWindow -> value_mask
+ << ", size " << configureWindow -> size_ << ".\n";
+
+ #endif
+}
+
+void ConfigureWindowStore::identityChecksum(const Message *message, const unsigned char *buffer,
+ unsigned int size, int bigEndian) const
+{
+ md5_append(md5_state_, buffer + 4, 4);
+ md5_append(md5_state_, buffer + 8, 2);
+}