common.c

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/*
===========================================================================
Copyright (C) 1999-2005 Id Software, Inc.

This file is part of Quake III Arena source code.

Quake III Arena source code is free software; you can redistribute it
and/or modify it under the terms of the GNU General Public License as
published by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.

Quake III Arena source code is distributed in the hope that it will be
useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with Foobar; if not, write to the Free Software
Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
===========================================================================
*/
// common.c -- misc functions used in client and server

#include "../game/q_shared.h"
#include "qcommon.h"
#include <setjmp.h>
#ifdef __linux__
#include <netinet/in.h>
#else
#if defined(MACOS_X)
#include <netinet/in.h>
#else
#include <winsock.h>
#endif
#endif

int demo_protocols[] =
{ 66, 67, 68, 0 };

#define MAX_NUM_ARGVS	50

#define MIN_DEDICATED_COMHUNKMEGS 1
#define MIN_COMHUNKMEGS 56
#ifdef MACOS_X
#define DEF_COMHUNKMEGS "64"
#define DEF_COMZONEMEGS "24"
#else
#define DEF_COMHUNKMEGS "56"
#define DEF_COMZONEMEGS "16"
#endif

int		com_argc;
char	*com_argv[MAX_NUM_ARGVS+1];

jmp_buf abortframe;		// an ERR_DROP occured, exit the entire frame


FILE *debuglogfile;
static fileHandle_t logfile;
fileHandle_t	com_journalFile;			// events are written here
fileHandle_t	com_journalDataFile;		// config files are written here

cvar_t	*com_viewlog;
cvar_t	*com_speeds;
cvar_t	*com_developer;
cvar_t	*com_dedicated;
cvar_t	*com_timescale;
cvar_t	*com_fixedtime;
cvar_t	*com_dropsim;		// 0.0 to 1.0, simulated packet drops
cvar_t	*com_journal;
cvar_t	*com_maxfps;
cvar_t	*com_timedemo;
cvar_t	*com_sv_running;
cvar_t	*com_cl_running;
cvar_t	*com_logfile;		// 1 = buffer log, 2 = flush after each print
cvar_t	*com_showtrace;
cvar_t	*com_version;
cvar_t	*com_blood;
cvar_t	*com_buildScript;	// for automated data building scripts
cvar_t	*com_introPlayed;
cvar_t	*cl_paused;
cvar_t	*sv_paused;
cvar_t	*com_cameraMode;
#if defined(_WIN32) && defined(_DEBUG)
cvar_t	*com_noErrorInterrupt;
#endif

// com_speeds times
int		time_game;
int		time_frontend;		// renderer frontend time
int		time_backend;		// renderer backend time

int			com_frameTime;
int			com_frameMsec;
int			com_frameNumber;

qboolean	com_errorEntered;
qboolean	com_fullyInitialized;

char	com_errorMessage[MAXPRINTMSG];

void Com_WriteConfig_f( void );
void CIN_CloseAllVideos();

//============================================================================

static char	*rd_buffer;
static int	rd_buffersize;
static void	(*rd_flush)( char *buffer );

void Com_BeginRedirect (char *buffer, int buffersize, void (*flush)( char *) )
{
	if (!buffer || !buffersize || !flush)
		return;
	rd_buffer = buffer;
	rd_buffersize = buffersize;
	rd_flush = flush;

	*rd_buffer = 0;
}

void Com_EndRedirect (void)
{
	if ( rd_flush ) {
		rd_flush(rd_buffer);
	}

	rd_buffer = NULL;
	rd_buffersize = 0;
	rd_flush = NULL;
}

/*
=============
Com_Printf

Both client and server can use this, and it will output
to the apropriate place.

A raw string should NEVER be passed as fmt, because of "%f" type crashers.
=============
*/
void QDECL Com_Printf( const char *fmt, ... ) {
	va_list		argptr;
	char		msg[MAXPRINTMSG];
  static qboolean opening_qconsole = qfalse;

	va_start (argptr,fmt);
	Q_vsnprintf (msg, sizeof(msg), fmt, argptr);
	va_end (argptr);

	if ( rd_buffer ) {
		if ((strlen (msg) + strlen(rd_buffer)) > (rd_buffersize - 1)) {
			rd_flush(rd_buffer);
			*rd_buffer = 0;
		}
		Q_strcat(rd_buffer, rd_buffersize, msg);
    // TTimo nooo .. that would defeat the purpose
		//rd_flush(rd_buffer);			
		//*rd_buffer = 0;
		return;
	}

	// echo to console if we're not a dedicated server
	if ( com_dedicated && !com_dedicated->integer ) {
		CL_ConsolePrint( msg );
	}

	// echo to dedicated console and early console
	Sys_Print( msg );

	// logfile
	if ( com_logfile && com_logfile->integer ) {
    // TTimo: only open the qconsole.log if the filesystem is in an initialized state
    //   also, avoid recursing in the qconsole.log opening (i.e. if fs_debug is on)
		if ( !logfile && FS_Initialized() && !opening_qconsole) {
			struct tm *newtime;
			time_t aclock;

      opening_qconsole = qtrue;

			time( &aclock );
			newtime = localtime( &aclock );

			logfile = FS_FOpenFileWrite( "qconsole.log" );
			Com_Printf( "logfile opened on %s\n", asctime( newtime ) );
			if ( com_logfile->integer > 1 ) {
				// force it to not buffer so we get valid
				// data even if we are crashing
				FS_ForceFlush(logfile);
			}

      opening_qconsole = qfalse;
		}
		if ( logfile && FS_Initialized()) {
			FS_Write(msg, strlen(msg), logfile);
		}
	}
}


/*
================
Com_DPrintf

A Com_Printf that only shows up if the "developer" cvar is set
================
*/
void QDECL Com_DPrintf( const char *fmt, ...) {
	va_list		argptr;
	char		msg[MAXPRINTMSG];
		
	if ( !com_developer || !com_developer->integer ) {
		return;			// don't confuse non-developers with techie stuff...
	}

	va_start (argptr,fmt);	
	Q_vsnprintf (msg, sizeof(msg), fmt, argptr);
	va_end (argptr);
	
	Com_Printf ("%s", msg);
}

/*
=============
Com_Error

Both client and server can use this, and it will
do the apropriate things.
=============
*/
void QDECL Com_Error( int code, const char *fmt, ... ) {
	va_list		argptr;
	static int	lastErrorTime;
	static int	errorCount;
	int			currentTime;

#if defined(_WIN32) && defined(_DEBUG)
	if ( code != ERR_DISCONNECT && code != ERR_NEED_CD ) {
		if (!com_noErrorInterrupt->integer) {
			__asm {
				int 0x03
			}
		}
	}
#endif

	// when we are running automated scripts, make sure we
	// know if anything failed
	if ( com_buildScript && com_buildScript->integer ) {
		code = ERR_FATAL;
	}

	// make sure we can get at our local stuff
	FS_PureServerSetLoadedPaks( "", "" );

	// if we are getting a solid stream of ERR_DROP, do an ERR_FATAL
	currentTime = Sys_Milliseconds();
	if ( currentTime - lastErrorTime < 100 ) {
		if ( ++errorCount > 3 ) {
			code = ERR_FATAL;
		}
	} else {
		errorCount = 0;
	}
	lastErrorTime = currentTime;

	if ( com_errorEntered ) {
		Sys_Error( "recursive error after: %s", com_errorMessage );
	}
	com_errorEntered = qtrue;

	va_start (argptr,fmt);
	vsprintf (com_errorMessage,fmt,argptr);
	va_end (argptr);

	if ( code != ERR_DISCONNECT && code != ERR_NEED_CD ) {
		Cvar_Set("com_errorMessage", com_errorMessage);
	}

	if ( code == ERR_SERVERDISCONNECT ) {
		CL_Disconnect( qtrue );
		CL_FlushMemory( );
		com_errorEntered = qfalse;
		longjmp (abortframe, -1);
	} else if ( code == ERR_DROP || code == ERR_DISCONNECT ) {
		Com_Printf ("********************\nERROR: %s\n********************\n", com_errorMessage);
		SV_Shutdown (va("Server crashed: %s\n",  com_errorMessage));
		CL_Disconnect( qtrue );
		CL_FlushMemory( );
		com_errorEntered = qfalse;
		longjmp (abortframe, -1);
	} else if ( code == ERR_NEED_CD ) {
		SV_Shutdown( "Server didn't have CD\n" );
		if ( com_cl_running && com_cl_running->integer ) {
			CL_Disconnect( qtrue );
			CL_FlushMemory( );
			com_errorEntered = qfalse;
			CL_CDDialog();
		} else {
			Com_Printf("Server didn't have CD\n" );
		}
		longjmp (abortframe, -1);
	} else {
		CL_Shutdown ();
		SV_Shutdown (va("Server fatal crashed: %s\n", com_errorMessage));
	}

	Com_Shutdown ();

	Sys_Error ("%s", com_errorMessage);
}


/*
=============
Com_Quit_f

Both client and server can use this, and it will
do the apropriate things.
=============
*/
void Com_Quit_f( void ) {
	// don't try to shutdown if we are in a recursive error
	if ( !com_errorEntered ) {
		SV_Shutdown ("Server quit\n");
		CL_Shutdown ();
		Com_Shutdown ();
		FS_Shutdown(qtrue);
	}
	Sys_Quit ();
}



/*
============================================================================

COMMAND LINE FUNCTIONS

+ characters seperate the commandLine string into multiple console
command lines.

All of these are valid:

quake3 +set test blah +map test
quake3 set test blah+map test
quake3 set test blah + map test

============================================================================
*/

#define	MAX_CONSOLE_LINES	32
int		com_numConsoleLines;
char	*com_consoleLines[MAX_CONSOLE_LINES];

/*
==================
Com_ParseCommandLine

Break it up into multiple console lines
==================
*/
void Com_ParseCommandLine( char *commandLine ) {
    int inq = 0;
    com_consoleLines[0] = commandLine;
    com_numConsoleLines = 1;

    while ( *commandLine ) {
        if (*commandLine == '"') {
            inq = !inq;
        }
        // look for a + seperating character
        // if commandLine came from a file, we might have real line seperators
        if ( (*commandLine == '+' && !inq) || *commandLine == '\n'  || *commandLine == '\r' ) {
            if ( com_numConsoleLines == MAX_CONSOLE_LINES ) {
                return;
            }
            com_consoleLines[com_numConsoleLines] = commandLine + 1;
            com_numConsoleLines++;
            *commandLine = 0;
        }
        commandLine++;
    }
}


/*
===================
Com_SafeMode

Check for "safe" on the command line, which will
skip loading of q3config.cfg
===================
*/
qboolean Com_SafeMode( void ) {
	int		i;

	for ( i = 0 ; i < com_numConsoleLines ; i++ ) {
		Cmd_TokenizeString( com_consoleLines[i] );
		if ( !Q_stricmp( Cmd_Argv(0), "safe" )
			|| !Q_stricmp( Cmd_Argv(0), "cvar_restart" ) ) {
			com_consoleLines[i][0] = 0;
			return qtrue;
		}
	}
	return qfalse;
}


/*
===============
Com_StartupVariable

Searches for command line parameters that are set commands.
If match is not NULL, only that cvar will be looked for.
That is necessary because cddir and basedir need to be set
before the filesystem is started, but all other sets shouls
be after execing the config and default.
===============
*/
void Com_StartupVariable( const char *match ) {
	int		i;
	char	*s;
	cvar_t	*cv;

	for (i=0 ; i < com_numConsoleLines ; i++) {
		Cmd_TokenizeString( com_consoleLines[i] );
		if ( strcmp( Cmd_Argv(0), "set" ) ) {
			continue;
		}

		s = Cmd_Argv(1);
		if ( !match || !strcmp( s, match ) ) {
			Cvar_Set( s, Cmd_Argv(2) );
			cv = Cvar_Get( s, "", 0 );
			cv->flags |= CVAR_USER_CREATED;
//			com_consoleLines[i] = 0;
		}
	}
}


/*
=================
Com_AddStartupCommands

Adds command line parameters as script statements
Commands are seperated by + signs

Returns qtrue if any late commands were added, which
will keep the demoloop from immediately starting
=================
*/
qboolean Com_AddStartupCommands( void ) {
	int		i;
	qboolean	added;

	added = qfalse;
	// quote every token, so args with semicolons can work
	for (i=0 ; i < com_numConsoleLines ; i++) {
		if ( !com_consoleLines[i] || !com_consoleLines[i][0] ) {
			continue;
		}

		// set commands won't override menu startup
		if ( Q_stricmpn( com_consoleLines[i], "set", 3 ) ) {
			added = qtrue;
		}
		Cbuf_AddText( com_consoleLines[i] );
		Cbuf_AddText( "\n" );
	}

	return added;
}


//============================================================================

void Info_Print( const char *s ) {
	char	key[512];
	char	value[512];
	char	*o;
	int		l;

	if (*s == '\\')
		s++;
	while (*s)
	{
		o = key;
		while (*s && *s != '\\')
			*o++ = *s++;

		l = o - key;
		if (l < 20)
		{
			Com_Memset (o, ' ', 20-l);
			key[20] = 0;
		}
		else
			*o = 0;
		Com_Printf ("%s", key);

		if (!*s)
		{
			Com_Printf ("MISSING VALUE\n");
			return;
		}

		o = value;
		s++;
		while (*s && *s != '\\')
			*o++ = *s++;
		*o = 0;

		if (*s)
			s++;
		Com_Printf ("%s\n", value);
	}
}

/*
============
Com_StringContains
============
*/
char *Com_StringContains(char *str1, char *str2, int casesensitive) {
	int len, i, j;

	len = strlen(str1) - strlen(str2);
	for (i = 0; i <= len; i++, str1++) {
		for (j = 0; str2[j]; j++) {
			if (casesensitive) {
				if (str1[j] != str2[j]) {
					break;