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/**************************************************************************/
/* */
/* 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. */
/* */
/**************************************************************************/
#ifndef Misc_H
#define Misc_H
#include <iostream.h>
#include <fstream.h>
#include <errno.h>
#include <string.h>
//
// 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;
//
// 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));
}
//
// 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 */
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