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author | Reinhard Tartler <siretart@tauware.de> | 2011-11-13 09:27:51 +0100 |
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committer | Reinhard Tartler <siretart@tauware.de> | 2011-11-13 09:27:51 +0100 |
commit | 3e924126b56c4d421e8263d25f6b14aa4ceed047 (patch) | |
tree | 921403de7b834fb1ac89f97d84ce105e0b487051 /nxcomp/ConfigureWindow.cpp | |
parent | a840692edc9c6d19cd7c057f68e39c7d95eb767d (diff) | |
download | nx-libs-3e924126b56c4d421e8263d25f6b14aa4ceed047.tar.gz nx-libs-3e924126b56c4d421e8263d25f6b14aa4ceed047.tar.bz2 nx-libs-3e924126b56c4d421e8263d25f6b14aa4ceed047.zip |
Imported nxcomp-3.1.0-4.tar.gznxcomp/3.1.0-4
Summary: Imported nxcomp-3.1.0-4.tar.gz
Keywords:
Imported nxcomp-3.1.0-4.tar.gz
into Git repository
Diffstat (limited to 'nxcomp/ConfigureWindow.cpp')
-rwxr-xr-x | nxcomp/ConfigureWindow.cpp | 130 |
1 files changed, 130 insertions, 0 deletions
diff --git a/nxcomp/ConfigureWindow.cpp b/nxcomp/ConfigureWindow.cpp new file mode 100755 index 000000000..8b16a03cd --- /dev/null +++ b/nxcomp/ConfigureWindow.cpp @@ -0,0 +1,130 @@ +/**************************************************************************/ +/* */ +/* Copyright (c) 2001, 2007 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 NoMachine S.r.l. */ +/* */ +/* All rights reserved. */ +/* */ +/**************************************************************************/ + +#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); +} |