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Diffstat (limited to 'nxcomp/src/Misc.h')
| -rw-r--r-- | nxcomp/src/Misc.h | 279 |
1 files changed, 279 insertions, 0 deletions
diff --git a/nxcomp/src/Misc.h b/nxcomp/src/Misc.h new file mode 100644 index 000000000..997630137 --- /dev/null +++ b/nxcomp/src/Misc.h @@ -0,0 +1,279 @@ +/**************************************************************************/ +/* */ +/* 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. */ +/* */ +/**************************************************************************/ + +#ifndef Misc_H +#define Misc_H + +#include <iostream> +#include <fstream> + +#include <cerrno> +#include <cstring> + +#ifdef __sun + +#include <strings.h> + +#endif + +using namespace std; + +// +// This is MD5 length. +// + +#define MD5_LENGTH 16 + +// +// Error handling macros. +// + +#define ESET(e) (errno = (e)) +#define EGET() (errno) +#define ESTR() strerror(errno) + +// +// TCP port offset applied to NX port specification. +// + +extern const int DEFAULT_NX_PROXY_PORT_OFFSET; + +// +// Default TCP port used by client proxy to listen +// to X clients and by server proxy to connect to +// remote. +// + +extern const int DEFAULT_NX_PROXY_PORT; + +// +// Default X display number that client +// proxy imitates. +// + +extern const int DEFAULT_NX_X_PORT; + +// +// Establish the port offsets for the additional +// services. +// + +extern const int DEFAULT_NX_CUPS_PORT_OFFSET; +extern const int DEFAULT_NX_SMB_PORT_OFFSET; +extern const int DEFAULT_NX_MEDIA_PORT_OFFSET; +extern const int DEFAULT_NX_AUX_PORT_OFFSET; +extern const int DEFAULT_NX_HTTP_PORT_OFFSET; +extern const int DEFAULT_NX_FONT_PORT_OFFSET; + +// +// Slave channels can be originated by both sides +// so they need to have different port offsets +// in the case the user runs both proxies on the +// same host. +// + +extern const int DEFAULT_NX_SLAVE_PORT_CLIENT_OFFSET; +extern const int DEFAULT_NX_SLAVE_PORT_SERVER_OFFSET; + +// +// NX proxy binds to all network interfaces by default +// With the -loopback parameter, you can switch +// over to binding to the loopback device only. +// + +extern const int DEFAULT_LOOPBACK_BIND; + +// +// Return strings containing various info. +// + +const char *GetUsageInfo(); +const char *GetCopyrightInfo(); +const char *GetOtherCopyrightInfo(); + +// +// Define this if you want immediate flush of +// the log output. +// + +#define FLUSH_LOGOFS + +// +// Global objects providing shared functions. +// + +class Auth; +class Control; +class Statistics; + +extern Auth *auth; +extern Control *control; +extern Statistics *statistics; + +// +// Log file. +// + +extern ostream *logofs; + +// +// Cleanup code. +// + +void HandleAbort() __attribute__((noreturn)); +void HandleShutdown() __attribute__((noreturn)); + +extern "C" +{ + void HandleCleanup(int code = 0) __attribute__((noreturn)); + void HandleCleanupForReconnect(); +} + +// +// Manage signal handlers. +// + +void DisableSignals(); +void EnableSignals(); + +// +// Manage timers. +// + +void SetTimer(int value); +void ResetTimer(); + +// +// Show a dialog asking the user if he/she +// wants to close the current session. Look +// in the alerts file for the known critical +// events. +// + +void HandleAlert(int code, int local); + +// +// Run the callback registered by the proxy +// or the agent. +// + +void KeeperCallback(); +void FlushCallback(int length); + +// +// Return the string literal corresponding +// the value. +// + +const char *DumpSignal(int signal); +const char *DumpPolicy(int type); +const char *DumpControl(int code); +const char *DumpSession(int code); +const char *DumpAction(int type); +const char *DumpState(int type); +const char *DumpToken(int type); + +// +// Print out content of buffer to log file. +// You need to define DUMP or OPCODES in +// the source to have these compiled. +// + +const char *DumpOpcode(const int &opcode); +const char *DumpChecksum(const void *checksum); + +void DumpData(const unsigned char *data, unsigned int length); +void DumpHexData(const unsigned char *data, unsigned int length); +void DumpChecksum(const unsigned char *data, unsigned int length); +void DumpBlockChecksums(const unsigned char *data, unsigned int length, + unsigned int block); + +// +// Defines logofs_flush as an empty string to +// avoid calling the corresponding ostream's +// flush() function. +// + +#ifdef FLUSH_LOGOFS + +#define logofs_flush "" ; logofs -> flush() + +#else + +#define logofs_flush "" + +#endif + +// +// Is the host where local proxy is running +// big-endian? +// + +extern int _hostBigEndian; +extern int _storeBigEndian; + +inline void setHostBigEndian(int flag) +{ + _hostBigEndian = flag; +} + +inline int hostBigEndian() +{ + return _hostBigEndian; +} + +inline int storeBigEndian() +{ + return _storeBigEndian; +} + +extern const unsigned int IntMask[33]; + +unsigned int GetUINT(unsigned const char *buffer, int bigEndian); +unsigned int GetULONG(unsigned const char *buffer, int bigEndian); +void PutUINT(unsigned int value, unsigned char *buffer, int bigEndian); +void PutULONG(unsigned int value, unsigned char *buffer, int bigEndian); + +inline void CleanData(unsigned char *buffer, int size) +{ + unsigned char *end = buffer + size; + + while (buffer < end) + { + *buffer++ = 0x00; + } +} + +int CheckData(istream *fs); +int CheckData(ostream *fs); +int PutData(ostream *fs, const unsigned char *buffer, int size); +int GetData(istream *fs, unsigned char *buffer, int size); +int FlushData(ostream *fs); + +unsigned int RoundUp2(unsigned int x); +unsigned int RoundUp4(unsigned int x); +unsigned int RoundUp8(unsigned int x); + +#endif /* Misc_H */ |