/**************************************************************************/ /* */ /* 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. */ /* */ /**************************************************************************/ #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); }