/******************************************************************************
Protocol snippet by KaVir. Released into the public domain in February 2011.
In case this is not legally possible:
The copyright holder grants any entity the right to use this work for any
purpose, without any conditions, unless such conditions are required by law.
******************************************************************************/
/******************************************************************************
This snippet was originally designed to be codebase independent, but has been
modified slightly so that it runs out-of-the-box on Merc derivatives. To use
it for other codebases, just change the code in the "Diku/Merc" section below.
******************************************************************************/
/******************************************************************************
Header files.
******************************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <arpa/telnet.h>
#include <time.h>
#include <malloc.h>
#include <alloca.h>
#include <ctype.h>
#include "protocol.h"
/******************************************************************************
The following section is for Diku/Merc derivatives. Replace as needed.
******************************************************************************/
#include "merc.h"
static void Write( descriptor_t *apDescriptor, const char *apData )
{
if ( apDescriptor != NULL && !apDescriptor->fcommand )
{
if ( apDescriptor->pProtocol->WriteOOB > 0 ||
apDescriptor->outtop == 0 )
{
apDescriptor->pProtocol->WriteOOB = 2;
}
}
write_to_buffer( apDescriptor, apData, 0 );
}
static void ReportBug( const char *apText )
{
bug( apText, 0 );
}
static void InfoMessage( descriptor_t *apDescriptor, const char *apData )
{
Write( apDescriptor, "\t[F210][\toINFO\t[F210]]\tn " );
Write( apDescriptor, apData );
}
static void CompressStart( descriptor_t *apDescriptor )
{
/* If your mud uses MCCP (Mud Client Compression Protocol), you need to
* call whatever function normally starts compression from here - the
* ReportBug() call should then be deleted.
*
* Otherwise you can just ignore this function.
*/
ReportBug( "CompressStart() in protocol.c is being called, but it doesn't do anything!\n" );
}
static void CompressEnd( descriptor_t *apDescriptor )
{
/* If your mud uses MCCP (Mud Client Compression Protocol), you need to
* call whatever function normally starts compression from here - the
* ReportBug() call should then be deleted.
*
* Otherwise you can just ignore this function.
*/
ReportBug( "CompressEnd() in protocol.c is being called, but it doesn't do anything!\n" );
}
/******************************************************************************
MSDP file-scope variables.
******************************************************************************/
/* These are for the GUI_VARIABLES, my unofficial extension of MSDP. They're
* intended for clients that wish to offer a generic GUI - not as nice as a
* custom GUI, admittedly, but still better than a plain terminal window.
*
* These are per-player so that they can be customised for different characters
* (eg changing 'mana' to 'blood' for vampires). You could even allow players
* to customise the buttons and gauges themselves if you wish.
*/
static const char s_Button1[] = "\005\002Help\002help\006";
static const char s_Button2[] = "\005\002Look\002look\006";
static const char s_Button3[] = "\005\002Score\002help\006";
static const char s_Button4[] = "\005\002Equipment\002equipment\006";
static const char s_Button5[] = "\005\002Inventory\002inventory\006";
static const char s_Gauge1[] = "\005\002Health\002red\002HEALTH\002HEALTH_MAX\006";
static const char s_Gauge2[] = "\005\002Mana\002blue\002MANA\002MANA_MAX\006";
static const char s_Gauge3[] = "\005\002Movement\002green\002MOVEMENT\002MOVEMENT_MAX\006";
static const char s_Gauge4[] = "\005\002Exp TNL\002yellow\002EXPERIENCE\002EXPERIENCE_MAX\006";
static const char s_Gauge5[] = "\005\002Opponent\002darkred\002OPPONENT_HEALTH\002OPPONENT_HEALTH_MAX\006";
/******************************************************************************
MSDP variable table.
******************************************************************************/
/* Macros for readability, but you can remove them if you don't like them */
#define NUMBER_READ_ONLY false, false, false, false, -1, -1, 0, NULL
#define NUMBER_READ_ONLY_SET_TO(x) false, false, false, false, -1, -1, x, NULL
#define STRING_READ_ONLY true, false, false, false, -1, -1, 0, NULL
#define NUMBER_IN_THE_RANGE(x,y) false, true, false, false, x, y, 0, NULL
#define BOOLEAN_SET_TO(x) false, true, false, false, 0, 1, x, NULL
#define STRING_WITH_LENGTH_OF(x,y) true, true, false, false, x, y, 0, NULL
#define STRING_WRITE_ONCE(x,y) true, true, true, false, -1, -1, 0, NULL
#define STRING_GUI(x) true, false, false, true, -1, -1, 0, x
static variable_name_t VariableNameTable[eMSDP_MAX+1] =
{
/* General */
{ eMSDP_CHARACTER_NAME, "CHARACTER_NAME", STRING_READ_ONLY },
{ eMSDP_SERVER_ID, "SERVER_ID", STRING_READ_ONLY },
{ eMSDP_SERVER_TIME, "SERVER_TIME", NUMBER_READ_ONLY },
{ eMSDP_SNIPPET_VERSION, "SNIPPET_VERSION", NUMBER_READ_ONLY_SET_TO(SNIPPET_VERSION) },
/* Character */
{ eMSDP_AFFECTS, "AFFECTS", STRING_READ_ONLY },
{ eMSDP_ALIGNMENT, "ALIGNMENT", NUMBER_READ_ONLY },
{ eMSDP_EXPERIENCE, "EXPERIENCE", NUMBER_READ_ONLY },
{ eMSDP_EXPERIENCE_MAX, "EXPERIENCE_MAX", NUMBER_READ_ONLY },
{ eMSDP_EXPERIENCE_TNL, "EXPERIENCE_TNL", NUMBER_READ_ONLY },
{ eMSDP_HEALTH, "HEALTH", NUMBER_READ_ONLY },
{ eMSDP_HEALTH_MAX, "HEALTH_MAX", NUMBER_READ_ONLY },
{ eMSDP_LEVEL, "LEVEL", NUMBER_READ_ONLY },
{ eMSDP_RACE, "RACE", STRING_READ_ONLY },
{ eMSDP_CLASS, "CLASS", STRING_READ_ONLY },
{ eMSDP_MANA, "MANA", NUMBER_READ_ONLY },
{ eMSDP_MANA_MAX, "MANA_MAX", NUMBER_READ_ONLY },
{ eMSDP_WIMPY, "WIMPY", NUMBER_READ_ONLY },
{ eMSDP_PRACTICE, "PRACTICE", NUMBER_READ_ONLY },
{ eMSDP_MONEY, "MONEY", NUMBER_READ_ONLY },
{ eMSDP_MOVEMENT, "MOVEMENT", NUMBER_READ_ONLY },
{ eMSDP_MOVEMENT_MAX, "MOVEMENT_MAX", NUMBER_READ_ONLY },
{ eMSDP_HITROLL, "HITROLL", NUMBER_READ_ONLY },
{ eMSDP_DAMROLL, "DAMROLL", NUMBER_READ_ONLY },
{ eMSDP_AC, "AC", NUMBER_READ_ONLY },
{ eMSDP_STR, "STR", NUMBER_READ_ONLY },
{ eMSDP_INT, "INT", NUMBER_READ_ONLY },
{ eMSDP_WIS, "WIS", NUMBER_READ_ONLY },
{ eMSDP_DEX, "DEX", NUMBER_READ_ONLY },
{ eMSDP_CON, "CON", NUMBER_READ_ONLY },
{ eMSDP_STR_PERM, "STR_PERM", NUMBER_READ_ONLY },
{ eMSDP_INT_PERM, "INT_PERM", NUMBER_READ_ONLY },
{ eMSDP_WIS_PERM, "WIS_PERM", NUMBER_READ_ONLY },
{ eMSDP_DEX_PERM, "DEX_PERM", NUMBER_READ_ONLY },
{ eMSDP_CON_PERM, "CON_PERM", NUMBER_READ_ONLY },
/* Combat */
{ eMSDP_OPPONENT_HEALTH, "OPPONENT_HEALTH", NUMBER_READ_ONLY },
{ eMSDP_OPPONENT_HEALTH_MAX,"OPPONENT_HEALTH_MAX",NUMBER_READ_ONLY },
{ eMSDP_OPPONENT_LEVEL, "OPPONENT_LEVEL", NUMBER_READ_ONLY },
{ eMSDP_OPPONENT_NAME, "OPPONENT_NAME", STRING_READ_ONLY },
/* World */
{ eMSDP_AREA_NAME, "AREA_NAME", STRING_READ_ONLY },
{ eMSDP_ROOM_EXITS, "ROOM_EXITS", STRING_READ_ONLY },
{ eMSDP_ROOM_NAME, "ROOM_NAME", STRING_READ_ONLY },
{ eMSDP_ROOM_VNUM, "ROOM_VNUM", NUMBER_READ_ONLY },
{ eMSDP_WORLD_TIME, "WORLD_TIME", NUMBER_READ_ONLY },
/* Configurable variables */
{ eMSDP_CLIENT_ID, "CLIENT_ID", STRING_WRITE_ONCE(1,40) },
{ eMSDP_CLIENT_VERSION, "CLIENT_VERSION", STRING_WRITE_ONCE(1,40) },
{ eMSDP_PLUGIN_ID, "PLUGIN_ID", STRING_WITH_LENGTH_OF(1,40) },
{ eMSDP_ANSI_COLORS, "ANSI_COLORS", BOOLEAN_SET_TO(1) },
{ eMSDP_XTERM_256_COLORS, "XTERM_256_COLORS", BOOLEAN_SET_TO(0) },
{ eMSDP_UTF_8, "UTF_8", BOOLEAN_SET_TO(0) },
{ eMSDP_SOUND, "SOUND", BOOLEAN_SET_TO(0) },
{ eMSDP_MXP, "MXP", BOOLEAN_SET_TO(0) },
/* GUI variables */
{ eMSDP_BUTTON_1, "BUTTON_1", STRING_GUI(s_Button1) },
{ eMSDP_BUTTON_2, "BUTTON_2", STRING_GUI(s_Button2) },
{ eMSDP_BUTTON_3, "BUTTON_3", STRING_GUI(s_Button3) },
{ eMSDP_BUTTON_4, "BUTTON_4", STRING_GUI(s_Button4) },
{ eMSDP_BUTTON_5, "BUTTON_5", STRING_GUI(s_Button5) },
{ eMSDP_GAUGE_1, "GAUGE_1", STRING_GUI(s_Gauge1) },
{ eMSDP_GAUGE_2, "GAUGE_2", STRING_GUI(s_Gauge2) },
{ eMSDP_GAUGE_3, "GAUGE_3", STRING_GUI(s_Gauge3) },
{ eMSDP_GAUGE_4, "GAUGE_4", STRING_GUI(s_Gauge4) },
{ eMSDP_GAUGE_5, "GAUGE_5", STRING_GUI(s_Gauge5) },
{ eMSDP_MAX, "", 0 } /* This must always be last. */
};
/******************************************************************************
MSSP file-scope variables.
******************************************************************************/
static int s_Players = 0;
static time_t s_Uptime = 0;
/******************************************************************************
Local function prototypes.
******************************************************************************/
static void Negotiate ( descriptor_t *apDescriptor );
static void PerformHandshake ( descriptor_t *apDescriptor, char aCmd, char aProtocol );
static void PerformSubnegotiation ( descriptor_t *apDescriptor, char aCmd, char *apData, int aSize );
static void SendNegotiationSequence ( descriptor_t *apDescriptor, char aCmd, char aProtocol );
static bool_t ConfirmNegotiation ( descriptor_t *apDescriptor, negotiated_t aProtocol, bool_t abWillDo, bool_t abSendReply );
static void ParseMSDP ( descriptor_t *apDescriptor, const char *apData );
static void ExecuteMSDPPair ( descriptor_t *apDescriptor, const char *apVariable, const char *apValue );
static void ParseATCP ( descriptor_t *apDescriptor, const char *apData );
#ifdef MUDLET_PACKAGE
static void SendATCP ( descriptor_t *apDescriptor, const char *apVariable, const char *apValue );
#endif /* MUDLET_PACKAGE */
static void SendMSSP ( descriptor_t *apDescriptor );
static char *GetMxpTag ( const char *apTag, const char *apText );
static const char *GetAnsiColour ( bool_t abBackground, int aRed, int aGreen, int aBlue );
static const char *GetRGBColour ( bool_t abBackground, int aRed, int aGreen, int aBlue );
static bool_t IsValidColour ( const char *apArgument );
static bool_t MatchString ( const char *apFirst, const char *apSecond );
static bool_t PrefixString ( const char *apPart, const char *apWhole );
static bool_t IsNumber ( const char *apString );
static char *AllocString ( const char *apString );
/******************************************************************************
ANSI colour codes.
******************************************************************************/
static const char s_Clean [] = "\033[0;00m"; /* Remove colour */
static const char s_DarkBlack [] = "\033[0;30m"; /* Black foreground */
static const char s_DarkRed [] = "\033[0;31m"; /* Red foreground */
static const char s_DarkGreen [] = "\033[0;32m"; /* Green foreground */
static const char s_DarkYellow [] = "\033[0;33m"; /* Yellow foreground */
static const char s_DarkBlue [] = "\033[0;34m"; /* Blue foreground */
static const char s_DarkMagenta [] = "\033[0;35m"; /* Magenta foreground */
static const char s_DarkCyan [] = "\033[0;36m"; /* Cyan foreground */
static const char s_DarkWhite [] = "\033[0;37m"; /* White foreground */
static const char s_BoldBlack [] = "\033[1;30m"; /* Grey foreground */
static const char s_BoldRed [] = "\033[1;31m"; /* Bright red foreground */
static const char s_BoldGreen [] = "\033[1;32m"; /* Bright green foreground */
static const char s_BoldYellow [] = "\033[1;33m"; /* Bright yellow foreground */
static const char s_BoldBlue [] = "\033[1;34m"; /* Bright blue foreground */
static const char s_BoldMagenta [] = "\033[1;35m"; /* Bright magenta foreground */
static const char s_BoldCyan [] = "\033[1;36m"; /* Bright cyan foreground */
static const char s_BoldWhite [] = "\033[1;37m"; /* Bright white foreground */
static const char s_BackBlack [] = "\033[1;40m"; /* Black background */
static const char s_BackRed [] = "\033[1;41m"; /* Red background */
static const char s_BackGreen [] = "\033[1;42m"; /* Green background */
static const char s_BackYellow [] = "\033[1;43m"; /* Yellow background */
static const char s_BackBlue [] = "\033[1;44m"; /* Blue background */
static const char s_BackMagenta [] = "\033[1;45m"; /* Magenta background */
static const char s_BackCyan [] = "\033[1;46m"; /* Cyan background */
static const char s_BackWhite [] = "\033[1;47m"; /* White background */
/******************************************************************************
Protocol global functions.
******************************************************************************/
protocol_t *ProtocolCreate( void )
{
int i; /* Loop counter */
protocol_t *pProtocol;
/* Called the first time we enter - make sure the table is correct */
static bool_t bInit = false;
if ( !bInit )
{
bInit = true;
for ( i = eMSDP_NONE+1; i < eMSDP_MAX; ++i )
{
if ( VariableNameTable[i].Variable != i )
{
ReportBug( "MSDP: Variable table does not match the enums in the header.\n" );
break;
}
}
}
pProtocol = malloc(sizeof(protocol_t));
pProtocol->WriteOOB = 0;
for ( i = eNEGOTIATED_TTYPE; i < eNEGOTIATED_MAX; ++i )
pProtocol->Negotiated[i] = false;
pProtocol->bIACMode = false;
pProtocol->bNegotiated = false;
pProtocol->bRenegotiate = false;
pProtocol->bNeedMXPVersion = false;
pProtocol->bBlockMXP = false;
pProtocol->bTTYPE = false;
pProtocol->bECHO = false;
pProtocol->bNAWS = false;
pProtocol->bCHARSET = false;
pProtocol->bMSDP = false;
pProtocol->bMSSP = false;
pProtocol->bATCP = false;
pProtocol->bMSP = false;
pProtocol->bMXP = false;
pProtocol->bMCCP = false;
pProtocol->b256Support = eUNKNOWN;
pProtocol->ScreenWidth = 0;
pProtocol->ScreenHeight = 0;
pProtocol->pMXPVersion = AllocString("Unknown");
pProtocol->pLastTTYPE = NULL;
pProtocol->pVariables = malloc(sizeof(MSDP_t*)*eMSDP_MAX);
for ( i = eMSDP_NONE+1; i < eMSDP_MAX; ++i )
{
pProtocol->pVariables[i] = malloc(sizeof(MSDP_t));
pProtocol->pVariables[i]->bReport = false;
pProtocol->pVariables[i]->bDirty = false;
pProtocol->pVariables[i]->ValueInt = 0;
pProtocol->pVariables[i]->pValueString = NULL;
if ( VariableNameTable[i].bString )
{
if ( VariableNameTable[i].pDefault != NULL )
pProtocol->pVariables[i]->pValueString = AllocString(VariableNameTable[i].pDefault);
else if ( VariableNameTable[i].bConfigurable )
pProtocol->pVariables[i]->pValueString = AllocString("Unknown");
else /* Use an empty string */
pProtocol->pVariables[i]->pValueString = AllocString("");
}
else if ( VariableNameTable[i].Default != 0 )
{
pProtocol->pVariables[i]->ValueInt = VariableNameTable[i].Default;
}
}
return pProtocol;
}
void ProtocolDestroy( protocol_t *apProtocol )
{
int i; /* Loop counter */
for ( i = eMSDP_NONE+1; i < eMSDP_MAX; ++i )
{
free(apProtocol->pVariables[i]->pValueString);
free(apProtocol->pVariables[i]);
}
free(apProtocol->pVariables);
free(apProtocol->pLastTTYPE);
free(apProtocol->pMXPVersion);
free(apProtocol);
}
void ProtocolInput( descriptor_t *apDescriptor, char *apData, int aSize, char *apOut )
{
static char CmdBuf[MAX_PROTOCOL_BUFFER+1];
static char IacBuf[MAX_PROTOCOL_BUFFER+1];
int CmdIndex = 0;
int IacIndex = 0;
int Index;
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
for ( Index = 0; Index < aSize; ++Index )
{
/* If we'd overflow the buffer, we just ignore the input */
if ( CmdIndex >= MAX_PROTOCOL_BUFFER || IacIndex >= MAX_PROTOCOL_BUFFER )
{
ReportBug("ProtocolInput: Too much incoming data to store in the buffer.\n");
return;
}
/* IAC IAC is treated as a single value of 255 */
if ( apData[Index] == (char)IAC && apData[Index+1] == (char)IAC )
{
if ( pProtocol->bIACMode )
IacBuf[IacIndex++] = (char)IAC;
else /* In-band command */
CmdBuf[CmdIndex++] = (char)IAC;
Index++;
}
else if ( pProtocol->bIACMode )
{
/* End subnegotiation. */
if ( apData[Index] == (char)IAC && apData[Index+1] == (char)SE )
{
Index++;
pProtocol->bIACMode = false;
IacBuf[IacIndex] = '\0';
if ( IacIndex >= 2 )
PerformSubnegotiation( apDescriptor, IacBuf[0], &IacBuf[1], IacIndex-1 );
IacIndex = 0;
}
else
IacBuf[IacIndex++] = apData[Index];
}
else if ( apData[Index] == (char)27 && apData[Index+1] == '[' &&
isdigit(apData[Index+2]) && apData[Index+3] == 'z' )
{
char MXPBuffer [1024];
char *pMXPTag = NULL;
int i = 0; /* Loop counter */
Index += 4; /* Skip to the start of the MXP sequence. */
while ( Index < aSize && apData[Index] != '>' && i < 1000 )
{
MXPBuffer[i++] = apData[Index++];
}
MXPBuffer[i++] = '>';
MXPBuffer[i] = '\0';
if ( ( pMXPTag = GetMxpTag( "CLIENT=", MXPBuffer ) ) != NULL )
{
/* Overwrite the previous client name - this is harder to fake */
free(pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString);
pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString = AllocString(pMXPTag);
}
if ( ( pMXPTag = GetMxpTag( "VERSION=", MXPBuffer ) ) != NULL )
{
const char *pClientName = pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString;
free(pProtocol->pVariables[eMSDP_CLIENT_VERSION]->pValueString);
pProtocol->pVariables[eMSDP_CLIENT_VERSION]->pValueString = AllocString(pMXPTag);
if ( MatchString( "MUSHCLIENT", pClientName ) )
{
/* MUSHclient 4.02 and later supports 256 colours. */
if ( strcmp(pMXPTag, "4.02") >= 0 )
{
pProtocol->pVariables[eMSDP_XTERM_256_COLORS]->ValueInt = 1;
pProtocol->b256Support = eYES;
}
else /* We know for sure that 256 colours are not supported */
pProtocol->b256Support = eNO;
}
else if ( MatchString( "CMUD", pClientName ) )
{
/* CMUD 3.04 and later supports 256 colours. */
if ( strcmp(pMXPTag, "3.04") >= 0 )
{
pProtocol->pVariables[eMSDP_XTERM_256_COLORS]->ValueInt = 1;
pProtocol->b256Support = eYES;
}
else /* We know for sure that 256 colours are not supported */
pProtocol->b256Support = eNO;
}
else if ( MatchString( "ATLANTIS", pClientName ) )
{
/* Atlantis 0.9.9.0 supports XTerm 256 colours, but it doesn't
* yet have MXP. However MXP is planned, so once it responds
* to a <VERSION> tag we'll know we can use 256 colours.
*/
pProtocol->pVariables[eMSDP_XTERM_256_COLORS]->ValueInt = 1;
pProtocol->b256Support = eYES;
}
}
if ( ( pMXPTag = GetMxpTag( "MXP=", MXPBuffer ) ) != NULL )
{
free(pProtocol->pMXPVersion);
pProtocol->pMXPVersion = AllocString(pMXPTag);
}
if ( strcmp(pProtocol->pMXPVersion, "Unknown") )
{
Write( apDescriptor, "\n" );
sprintf( MXPBuffer, "MXP version %s detected and enabled.\r\n",
pProtocol->pMXPVersion );
InfoMessage( apDescriptor, MXPBuffer );
}
}
else /* In-band command */
{
if ( apData[Index] == (char)IAC )
{
switch ( apData[Index+1] )
{
case (char)SB: /* Begin subnegotiation. */
Index++;
pProtocol->bIACMode = true;
break;
case (char)DO: /* Handshake. */
case (char)DONT:
case (char)WILL:
case (char)WONT:
PerformHandshake( apDescriptor, apData[Index+1], apData[Index+2] );
Index += 2;
break;
case (char)IAC: /* Two IACs count as one. */
CmdBuf[CmdIndex++] = (char)IAC;
Index++;
break;
default: /* Skip it. */
Index++;
break;
}
}
else
CmdBuf[CmdIndex++] = apData[Index];
}
}
/* Terminate the two buffers */
IacBuf[IacIndex] = '\0';
CmdBuf[CmdIndex] = '\0';
/* Copy the input buffer back to the player. */
strcat( apOut, CmdBuf );
}
const char *ProtocolOutput( descriptor_t *apDescriptor, const char *apData, int *apLength )
{
static char Result[MAX_OUTPUT_BUFFER+1];
const char Tab[] = "\t";
const char MSP[] = "!!";
const char MXPStart[] = "\033[1z<";
const char MXPStop[] = ">\033[7z";
const char LinkStart[] = "\033[1z<send>\033[7z";
const char LinkStop[] = "\033[1z</send>\033[7z";
bool_t bTerminate = false, bUseMXP = false, bUseMSP = false;
#ifdef COLOUR_CHAR
bool_t bColourOn = COLOUR_ON_BY_DEFAULT;
#endif /* COLOUR_CHAR */
int i = 0, j = 0; /* Index values */
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol == NULL || apData == NULL )
return apData;
/* Strip !!SOUND() triggers if they support MSP or are using sound */
if ( pProtocol->bMSP || pProtocol->pVariables[eMSDP_SOUND]->ValueInt )
bUseMSP = true;
for ( ; i < MAX_OUTPUT_BUFFER && apData[j] != '\0' && !bTerminate &&
(*apLength <= 0 || j < *apLength); ++j )
{
if ( apData[j] == '\t' )
{
const char *pCopyFrom = NULL;
switch ( apData[++j] )
{
case '\t': /* Two tabs in a row will display an actual tab */
pCopyFrom = Tab;
break;
case 'n':
pCopyFrom = s_Clean;
break;
case 'r': /* dark red */
pCopyFrom = ColourRGB(apDescriptor, "F200");
break;
case 'R': /* light red */
pCopyFrom = ColourRGB(apDescriptor, "F500");
break;
case 'g': /* dark green */
pCopyFrom = ColourRGB(apDescriptor, "F020");
break;
case 'G': /* light green */
pCopyFrom = ColourRGB(apDescriptor, "F050");
break;
case 'y': /* dark yellow */
pCopyFrom = ColourRGB(apDescriptor, "F220");
break;
case 'Y': /* light yellow */
pCopyFrom = ColourRGB(apDescriptor, "F550");
break;
case 'b': /* dark blue */
pCopyFrom = ColourRGB(apDescriptor, "F002");
break;
case 'B': /* light blue */
pCopyFrom = ColourRGB(apDescriptor, "F005");
break;
case 'm': /* dark magenta */
pCopyFrom = ColourRGB(apDescriptor, "F202");
break;
case 'M': /* light magenta */
pCopyFrom = ColourRGB(apDescriptor, "F505");
break;
case 'c': /* dark cyan */
pCopyFrom = ColourRGB(apDescriptor, "F022");
break;
case 'C': /* light cyan */
pCopyFrom = ColourRGB(apDescriptor, "F055");
break;
case 'w': /* dark white */
pCopyFrom = ColourRGB(apDescriptor, "F222");
break;
case 'W': /* light white */
pCopyFrom = ColourRGB(apDescriptor, "F555");
break;
case 'a': /* dark azure */
pCopyFrom = ColourRGB(apDescriptor, "F014");
break;
case 'A': /* light azure */
pCopyFrom = ColourRGB(apDescriptor, "F025");
break;
case 'j': /* dark jade */
pCopyFrom = ColourRGB(apDescriptor, "F031");
break;
case 'J': /* light jade */
pCopyFrom = ColourRGB(apDescriptor, "F052");
break;
case 'l': /* dark lime */
pCopyFrom = ColourRGB(apDescriptor, "F140");
break;
case 'L': /* light lime */
pCopyFrom = ColourRGB(apDescriptor, "F250");
break;
case 'o': /* dark orange */
pCopyFrom = ColourRGB(apDescriptor, "F520");
break;
case 'O': /* light orange */
pCopyFrom = ColourRGB(apDescriptor, "F530");
break;
case 'p': /* dark pink */
pCopyFrom = ColourRGB(apDescriptor, "F301");
break;
case 'P': /* light pink */
pCopyFrom = ColourRGB(apDescriptor, "F502");
break;
case 't': /* dark tan */
pCopyFrom = ColourRGB(apDescriptor, "F210");
break;
case 'T': /* light tan */
pCopyFrom = ColourRGB(apDescriptor, "F321");
break;
case 'v': /* dark violet */
pCopyFrom = ColourRGB(apDescriptor, "F104");
break;
case 'V': /* light violet */
pCopyFrom = ColourRGB(apDescriptor, "F205");
break;
case '(': /* MXP link */
if ( !pProtocol->bBlockMXP && pProtocol->pVariables[eMSDP_MXP]->ValueInt )
pCopyFrom = LinkStart;
break;
case ')': /* MXP link */
if ( !pProtocol->bBlockMXP && pProtocol->pVariables[eMSDP_MXP]->ValueInt )
pCopyFrom = LinkStop;
pProtocol->bBlockMXP = false;
break;
case '<':
if ( !pProtocol->bBlockMXP && pProtocol->pVariables[eMSDP_MXP]->ValueInt )
{
pCopyFrom = MXPStart;
bUseMXP = true;
}
else /* No MXP support, so just strip it out */
{
while ( apData[j] != '\0' && apData[j] != '>' )
++j;
}
pProtocol->bBlockMXP = false;
break;
case '[':
if ( tolower(apData[++j]) == 'u' )
{
char Buffer[8] = {'\0'}, BugString[256];
int Index = 0;
int Number = 0;
bool_t bDone = false, bValid = true;
while ( isdigit(apData[++j]) )
{
Number *= 10;
Number += (apData[j])-'0';
}
if ( apData[j] == '/' )
++j;
while ( apData[j] != '\0' && !bDone )
{
if ( apData[j] == ']' )
bDone = true;
else if ( Index < 7 )
Buffer[Index++] = apData[j++];
else /* It's too long, so ignore the rest and note the problem */
{
j++;
bValid = false;
}
}
if ( !bDone )
{
sprintf( BugString, "BUG: Unicode substitute '%s' wasn't terminated with ']'.\n", Buffer );
ReportBug( BugString );
}
else if ( !bValid )
{
sprintf( BugString, "BUG: Unicode substitute '%s' truncated. Missing ']'?\n", Buffer );
ReportBug( BugString );
}
else if ( pProtocol->pVariables[eMSDP_UTF_8]->ValueInt )
{
pCopyFrom = UnicodeGet(Number);
}
else /* Display the substitute string */
{
pCopyFrom = Buffer;
}
/* Terminate if we've reached the end of the string */
bTerminate = !bDone;
}
else if ( tolower(apData[j]) == 'f' || tolower(apData[j]) == 'b' )
{
char Buffer[8] = {'\0'}, BugString[256];
int Index = 0;
bool_t bDone = false, bValid = true;
/* Copy the 'f' (foreground) or 'b' (background) */
Buffer[Index++] = apData[j++];
while ( apData[j] != '\0' && !bDone && bValid )
{
if ( apData[j] == ']' )
bDone = true;
else if ( Index < 4 )
Buffer[Index++] = apData[j++];
else /* It's too long, so drop out - the colour code may still be valid */
bValid = false;
}
if ( !bDone || !bValid )
{
sprintf( BugString, "BUG: RGB %sground colour '%s' wasn't terminated with ']'.\n",
(tolower(Buffer[0]) == 'f') ? "fore" : "back", &Buffer[1] );
ReportBug( BugString );
}
else if ( !IsValidColour(Buffer) )
{
sprintf( BugString, "BUG: RGB %sground colour '%s' invalid (each digit must be in the range 0-5).\n",
(tolower(Buffer[0]) == 'f') ? "fore" : "back", &Buffer[1] );
ReportBug( BugString );
}
else /* Success */
{
pCopyFrom = ColourRGB(apDescriptor, Buffer);
}
}
else if ( tolower(apData[j]) == 'x' )
{
char Buffer[8] = {'\0'}, BugString[256];
int Index = 0;
bool_t bDone = false, bValid = true;
++j; /* Skip the 'x' */
while ( apData[j] != '\0' && !bDone )
{
if ( apData[j] == ']' )
bDone = true;
else if ( Index < 7 )
Buffer[Index++] = apData[j++];
else /* It's too long, so ignore the rest and note the problem */
{
j++;
bValid = false;
}
}
if ( !bDone )
{
sprintf( BugString, "BUG: Required MXP version '%s' wasn't terminated with ']'.\n", Buffer );
ReportBug( BugString );
}
else if ( !bValid )
{
sprintf( BugString, "BUG: Required MXP version '%s' too long. Missing ']'?\n", Buffer );
ReportBug( BugString );
}
else if ( !strcmp(pProtocol->pMXPVersion, "Unknown") ||
strcmp(pProtocol->pMXPVersion, Buffer) < 0 )
{
/* Their version of MXP isn't high enough */
pProtocol->bBlockMXP = true;
}
else /* MXP is sufficient for this tag */
{
pProtocol->bBlockMXP = false;
}
/* Terminate if we've reached the end of the string */
bTerminate = !bDone;
}
break;
case '!': /* Used for in-band MSP sound triggers */
pCopyFrom = MSP;
break;
#ifdef COLOUR_CHAR
case '+':
bColourOn = true;
break;
case '-':
bColourOn = false;
break;
#endif /* COLOUR_CHAR */
case '\0':
bTerminate = true;
break;
default:
break;
}
/* Copy the colour code, if any. */
if ( pCopyFrom != NULL )
{
while ( *pCopyFrom != '\0' && i < MAX_OUTPUT_BUFFER )
Result[i++] = *pCopyFrom++;
}
}
#ifdef COLOUR_CHAR
else if ( bColourOn && apData[j] == COLOUR_CHAR )
{
const char ColourChar[] = { COLOUR_CHAR, '\0' };
const char *pCopyFrom = NULL;
switch ( apData[++j] )
{
case COLOUR_CHAR: /* Two in a row display the actual character */
pCopyFrom = ColourChar;
break;
case 'n':
pCopyFrom = s_Clean;
break;
case 'r': /* dark red */
pCopyFrom = ColourRGB(apDescriptor, "F200");
break;
case 'R': /* light red */
pCopyFrom = ColourRGB(apDescriptor, "F500");
break;
case 'g': /* dark green */
pCopyFrom = ColourRGB(apDescriptor, "F020");
break;
case 'G': /* light green */
pCopyFrom = ColourRGB(apDescriptor, "F050");
break;
case 'y': /* dark yellow */
pCopyFrom = ColourRGB(apDescriptor, "F220");
break;
case 'Y': /* light yellow */
pCopyFrom = ColourRGB(apDescriptor, "F550");
break;
case 'b': /* dark blue */
pCopyFrom = ColourRGB(apDescriptor, "F002");
break;
case 'B': /* light blue */
pCopyFrom = ColourRGB(apDescriptor, "F005");
break;
case 'm': /* dark magenta */
pCopyFrom = ColourRGB(apDescriptor, "F202");
break;
case 'M': /* light magenta */
pCopyFrom = ColourRGB(apDescriptor, "F505");
break;
case 'c': /* dark cyan */
pCopyFrom = ColourRGB(apDescriptor, "F022");
break;
case 'C': /* light cyan */
pCopyFrom = ColourRGB(apDescriptor, "F055");
break;
case 'w': /* dark white */
pCopyFrom = ColourRGB(apDescriptor, "F222");
break;
case 'W': /* light white */
pCopyFrom = ColourRGB(apDescriptor, "F555");
break;
case 'a': /* dark azure */
pCopyFrom = ColourRGB(apDescriptor, "F014");
break;
case 'A': /* light azure */
pCopyFrom = ColourRGB(apDescriptor, "F025");
break;
case 'j': /* dark jade */
pCopyFrom = ColourRGB(apDescriptor, "F031");
break;
case 'J': /* light jade */
pCopyFrom = ColourRGB(apDescriptor, "F052");
break;
case 'l': /* dark lime */
pCopyFrom = ColourRGB(apDescriptor, "F140");
break;
case 'L': /* light lime */
pCopyFrom = ColourRGB(apDescriptor, "F250");
break;
case 'o': /* dark orange */
pCopyFrom = ColourRGB(apDescriptor, "F520");
break;
case 'O': /* light orange */
pCopyFrom = ColourRGB(apDescriptor, "F530");
break;
case 'p': /* dark pink */
pCopyFrom = ColourRGB(apDescriptor, "F301");
break;
case 'P': /* light pink */
pCopyFrom = ColourRGB(apDescriptor, "F502");
break;
case 't': /* dark tan */
pCopyFrom = ColourRGB(apDescriptor, "F210");
break;
case 'T': /* light tan */
pCopyFrom = ColourRGB(apDescriptor, "F321");
break;
case 'v': /* dark violet */
pCopyFrom = ColourRGB(apDescriptor, "F104");
break;
case 'V': /* light violet */
pCopyFrom = ColourRGB(apDescriptor, "F205");
break;
case '\0':
bTerminate = true;
break;
#ifdef EXTENDED_COLOUR
case '[':
if ( tolower(apData[++j]) == 'f' || tolower(apData[j]) == 'b' )
{
char Buffer[8] = {'\0'};
int Index = 0;
bool_t bDone = false, bValid = true;
/* Copy the 'f' (foreground) or 'b' (background) */
Buffer[Index++] = apData[j++];
while ( apData[j] != '\0' && !bDone && bValid )
{
if ( apData[j] == ']' )
bDone = true;
else if ( Index < 4 )
Buffer[Index++] = apData[j++];
else /* It's too long, so drop out - the colour code may still be valid */
bValid = false;
}
if ( bDone && bValid && IsValidColour(Buffer) )
pCopyFrom = ColourRGB(apDescriptor, Buffer);
}
break;
#endif /* EXTENDED_COLOUR */
default:
#ifdef DISPLAY_INVALID_COLOUR_CODES
Result[i++] = COLOUR_CHAR;
Result[i++] = apData[j];
#endif /* DISPLAY_INVALID_COLOUR_CODES */
break;
}
/* Copy the colour code, if any. */
if ( pCopyFrom != NULL )
{
while ( *pCopyFrom != '\0' && i < MAX_OUTPUT_BUFFER )
Result[i++] = *pCopyFrom++;
}
}
#endif /* COLOUR_CHAR */
else if ( bUseMXP && apData[j] == '>' )
{
const char *pCopyFrom = MXPStop;
while ( *pCopyFrom != '\0' && i < MAX_OUTPUT_BUFFER)
Result[i++] = *pCopyFrom++;
bUseMXP = false;
}
else if ( bUseMSP && j > 0 && apData[j-1] == '!' && apData[j] == '!' &&
PrefixString("SOUND(", &apData[j+1]) )
{
/* Avoid accidental triggering of old-style MSP triggers */
Result[i++] = '?';
}
else /* Just copy the character normally */
{
Result[i++] = apData[j];
}
}
/* If we'd overflow the buffer, we don't send any output */
if ( i >= MAX_OUTPUT_BUFFER )
{
i = 0;
ReportBug("ProtocolOutput: Too much outgoing data to store in the buffer.\n");
}
/* Terminate the string */
Result[i] = '\0';
/* Store the length */
if ( apLength )
*apLength = i;
/* Return the string */
return Result;
}
/* Some clients (such as GMud) don't properly handle negotiation, and simply
* display every printable character to the screen. However TTYPE isn't a
* printable character, so we negotiate for it first, and only negotiate for
* other protocols if the client responds with IAC WILL TTYPE or IAC WONT
* TTYPE. Thanks go to Donky on MudBytes for the suggestion.
*/
void ProtocolNegotiate( descriptor_t *apDescriptor )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_TTYPE, true, true);
}
/* Tells the client to switch echo on or off. */
void ProtocolNoEcho( descriptor_t *apDescriptor, bool_t abOn )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_ECHO, abOn, true);
}
/******************************************************************************
Copyover save/load functions.
******************************************************************************/
const char *CopyoverGet( descriptor_t *apDescriptor )
{
static char Buffer[64];
char *pBuffer = Buffer;
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol != NULL )
{
sprintf(Buffer, "%d/%d", pProtocol->ScreenWidth, pProtocol->ScreenHeight);
/* Skip to the end */
while ( *pBuffer != '\0' )
++pBuffer;
if ( pProtocol->bTTYPE )
*pBuffer++ = 'T';
if ( pProtocol->bNAWS )
*pBuffer++ = 'N';
if ( pProtocol->bMSDP )
*pBuffer++ = 'M';
if ( pProtocol->bATCP )
*pBuffer++ = 'A';
if ( pProtocol->bMSP )
*pBuffer++ = 'S';
if ( pProtocol->pVariables[eMSDP_MXP]->ValueInt )
*pBuffer++ = 'X';
if ( pProtocol->bMCCP )
{
*pBuffer++ = 'c';
CompressEnd(apDescriptor);
}
if ( pProtocol->pVariables[eMSDP_XTERM_256_COLORS]->ValueInt )
*pBuffer++ = 'C';
if ( pProtocol->bCHARSET )
*pBuffer++ = 'H';
if ( pProtocol->pVariables[eMSDP_UTF_8]->ValueInt )
*pBuffer++ = 'U';
}
/* Terminate the string */
*pBuffer = '\0';
return Buffer;
}
void CopyoverSet( descriptor_t *apDescriptor, const char *apData )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol != NULL && apData != NULL )
{
int Width = 0, Height = 0;
bool_t bDoneWidth = false;
int i; /* Loop counter */
for ( i = 0; apData[i] != '\0'; ++i )
{
switch ( apData[i] )
{
case 'T':
pProtocol->bTTYPE = true;
break;
case 'N':
pProtocol->bNAWS = true;
break;
case 'M':
pProtocol->bMSDP = true;
break;
case 'A':
pProtocol->bATCP = true;
break;
case 'S':
pProtocol->bMSP = true;
break;
case 'X':
pProtocol->bMXP = true;
pProtocol->pVariables[eMSDP_MXP]->ValueInt = 1;
break;
case 'c':
pProtocol->bMCCP = true;
CompressStart(apDescriptor);
break;
case 'C':
pProtocol->pVariables[eMSDP_XTERM_256_COLORS]->ValueInt = 1;
break;
case 'H':
pProtocol->bCHARSET = true;
break;
case 'U':
pProtocol->pVariables[eMSDP_UTF_8]->ValueInt = 1;
break;
default:
if ( apData[i] == '/' )
bDoneWidth = true;
else if ( isdigit(apData[i]) )
{
if ( bDoneWidth )
{
Height *= 10;
Height += (apData[i] - '0');
}
else /* We're still calculating height */
{
Width *= 10;
Width += (apData[i] - '0');
}
}
break;
}
}
/* Restore the width and height */
pProtocol->ScreenWidth = Width;
pProtocol->ScreenHeight = Height;
/* If we're using MSDP or ATCP, we need to renegotiate it so that the
* client can resend the list of variables it wants us to REPORT.
*
* Note that we only use ATCP if MSDP is not supported.
*/
if ( pProtocol->bMSDP )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MSDP, true, true);
}
else if ( pProtocol->bATCP )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_ATCP, true, true);
}
/* Ask the client to send its MXP version again */
if ( pProtocol->bMXP )
MXPSendTag( apDescriptor, "<VERSION>" );
}
}
/******************************************************************************
MSDP global functions.
******************************************************************************/
void MSDPUpdate( descriptor_t *apDescriptor )
{
int i; /* Loop counter */
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
for ( i = eMSDP_NONE+1; i < eMSDP_MAX; ++i )
{
if ( pProtocol->pVariables[i]->bReport )
{
if ( pProtocol->pVariables[i]->bDirty )
{
MSDPSend( apDescriptor, (variable_t)i );
pProtocol->pVariables[i]->bDirty = false;
}
}
}
}
void MSDPFlush( descriptor_t *apDescriptor, variable_t aMSDP )
{
if ( aMSDP > eMSDP_NONE && aMSDP < eMSDP_MAX )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol->pVariables[aMSDP]->bReport )
{
if ( pProtocol->pVariables[aMSDP]->bDirty )
{
MSDPSend( apDescriptor, aMSDP );
pProtocol->pVariables[aMSDP]->bDirty = false;
}
}
}
}
void MSDPSend( descriptor_t *apDescriptor, variable_t aMSDP )
{
char MSDPBuffer[MAX_VARIABLE_LENGTH+1] = { '\0' };
if ( aMSDP > eMSDP_NONE && aMSDP < eMSDP_MAX )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( VariableNameTable[aMSDP].bString )
{
/* Should really be replaced with a dynamic buffer */
int RequiredBuffer = strlen(VariableNameTable[aMSDP].pName) +
strlen(pProtocol->pVariables[aMSDP]->pValueString) + 12;
if ( RequiredBuffer >= MAX_VARIABLE_LENGTH )
{
sprintf( MSDPBuffer,
"MSDPSend: %s %d bytes (exceeds MAX_VARIABLE_LENGTH of %d).\n",
VariableNameTable[aMSDP].pName, RequiredBuffer,
MAX_VARIABLE_LENGTH );
ReportBug( MSDPBuffer );
MSDPBuffer[0] = '\0';
}
else if ( pProtocol->bMSDP )
{
sprintf( MSDPBuffer, "%c%c%c%c%s%c%s%c%c",
IAC, SB, TELOPT_MSDP, MSDP_VAR,
VariableNameTable[aMSDP].pName, MSDP_VAL,
pProtocol->pVariables[aMSDP]->pValueString, IAC, SE );
}
else if ( pProtocol->bATCP )
{
sprintf( MSDPBuffer, "%c%c%cMSDP.%s %s%c%c",
IAC, SB, TELOPT_ATCP,
VariableNameTable[aMSDP].pName,
pProtocol->pVariables[aMSDP]->pValueString, IAC, SE );
}
}
else /* It's an integer, not a string */
{
if ( pProtocol->bMSDP )
{
sprintf( MSDPBuffer, "%c%c%c%c%s%c%d%c%c",
IAC, SB, TELOPT_MSDP, MSDP_VAR,
VariableNameTable[aMSDP].pName, MSDP_VAL,
pProtocol->pVariables[aMSDP]->ValueInt, IAC, SE );
}
else if ( pProtocol->bATCP )
{
sprintf( MSDPBuffer, "%c%c%cMSDP.%s %d%c%c",
IAC, SB, TELOPT_ATCP,
VariableNameTable[aMSDP].pName,
pProtocol->pVariables[aMSDP]->ValueInt, IAC, SE );
}
}
/* Just in case someone calls this function without checking MSDP/ATCP */
if ( MSDPBuffer[0] != '\0' )
Write( apDescriptor, MSDPBuffer );
}
}
void MSDPSendPair( descriptor_t *apDescriptor, const char *apVariable, const char *apValue )
{
char MSDPBuffer[MAX_VARIABLE_LENGTH+1] = { '\0' };
if ( apVariable != NULL && apValue != NULL )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
/* Should really be replaced with a dynamic buffer */
int RequiredBuffer = strlen(apVariable) + strlen(apValue) + 12;
if ( RequiredBuffer >= MAX_VARIABLE_LENGTH )
{
if ( RequiredBuffer - strlen(apValue) < MAX_VARIABLE_LENGTH )
{
sprintf( MSDPBuffer,
"MSDPSendPair: %s %d bytes (exceeds MAX_VARIABLE_LENGTH of %d).\n",
apVariable, RequiredBuffer, MAX_VARIABLE_LENGTH );
}
else /* The variable name itself is too long */
{
sprintf( MSDPBuffer,
"MSDPSendPair: Variable name has a length of %d bytes (exceeds MAX_VARIABLE_LENGTH of %d).\n",
RequiredBuffer, MAX_VARIABLE_LENGTH );
}
ReportBug( MSDPBuffer );
MSDPBuffer[0] = '\0';
}
else if ( pProtocol->bMSDP )
{
sprintf( MSDPBuffer, "%c%c%c%c%s%c%s%c%c",
IAC, SB, TELOPT_MSDP, MSDP_VAR, apVariable, MSDP_VAL,
apValue, IAC, SE );
}
else if ( pProtocol->bATCP )
{
sprintf( MSDPBuffer, "%c%c%cMSDP.%s %s%c%c",
IAC, SB, TELOPT_ATCP, apVariable, apValue, IAC, SE );
}
/* Just in case someone calls this function without checking MSDP/ATCP */
if ( MSDPBuffer[0] != '\0' )
Write( apDescriptor, MSDPBuffer );
}
}
void MSDPSendList( descriptor_t *apDescriptor, const char *apVariable, const char *apValue )
{
char MSDPBuffer[MAX_VARIABLE_LENGTH+1] = { '\0' };
if ( apVariable != NULL && apValue != NULL )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
/* Should really be replaced with a dynamic buffer */
int RequiredBuffer = strlen(apVariable) + strlen(apValue) + 12;
if ( RequiredBuffer >= MAX_VARIABLE_LENGTH )
{
if ( RequiredBuffer - strlen(apValue) < MAX_VARIABLE_LENGTH )
{
sprintf( MSDPBuffer,
"MSDPSendList: %s %d bytes (exceeds MAX_VARIABLE_LENGTH of %d).\n",
apVariable, RequiredBuffer, MAX_VARIABLE_LENGTH );
}
else /* The variable name itself is too long */
{
sprintf( MSDPBuffer,
"MSDPSendList: Variable name has a length of %d bytes (exceeds MAX_VARIABLE_LENGTH of %d).\n",
RequiredBuffer, MAX_VARIABLE_LENGTH );
}
ReportBug( MSDPBuffer );
MSDPBuffer[0] = '\0';
}
else if ( pProtocol->bMSDP )
{
int i; /* Loop counter */
sprintf( MSDPBuffer, "%c%c%c%c%s%c%c%c%s%c%c%c",
IAC, SB, TELOPT_MSDP, MSDP_VAR, apVariable, MSDP_VAL,
MSDP_ARRAY_OPEN, MSDP_VAL, apValue, MSDP_ARRAY_CLOSE, IAC, SE );
/* Convert the spaces to MSDP_VAL */
for ( i = 0; MSDPBuffer[i] != '\0'; ++i )
{
if ( MSDPBuffer[i] == ' ' )
MSDPBuffer[i] = MSDP_VAL;
}
}
else if ( pProtocol->bATCP )
{
sprintf( MSDPBuffer, "%c%c%cMSDP.%s %s%c%c",
IAC, SB, TELOPT_ATCP, apVariable, apValue, IAC, SE );
}
/* Just in case someone calls this function without checking MSDP/ATCP */
if ( MSDPBuffer[0] != '\0' )
Write( apDescriptor, MSDPBuffer );
}
}
void MSDPSetNumber( descriptor_t *apDescriptor, variable_t aMSDP, int aValue )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol != NULL && aMSDP > eMSDP_NONE && aMSDP < eMSDP_MAX )
{
if ( !VariableNameTable[aMSDP].bString )
{
if ( pProtocol->pVariables[aMSDP]->ValueInt != aValue )
{
pProtocol->pVariables[aMSDP]->ValueInt = aValue;
pProtocol->pVariables[aMSDP]->bDirty = true;
}
}
}
}
void MSDPSetString( descriptor_t *apDescriptor, variable_t aMSDP, const char *apValue )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol != NULL && apValue != NULL )
{
if ( VariableNameTable[aMSDP].bString )
{
if ( strcmp(pProtocol->pVariables[aMSDP]->pValueString, apValue) )
{
free(pProtocol->pVariables[aMSDP]->pValueString);
pProtocol->pVariables[aMSDP]->pValueString = AllocString(apValue);
pProtocol->pVariables[aMSDP]->bDirty = true;
}
}
}
}
void MSDPSetTable( descriptor_t *apDescriptor, variable_t aMSDP, const char *apValue )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol != NULL && apValue != NULL )
{
if ( *apValue == '\0' )
{
/* It's easier to call MSDPSetString if the value is empty */
MSDPSetString(apDescriptor, aMSDP, apValue);
}
else if ( VariableNameTable[aMSDP].bString )
{
const char MsdpTableStart[] = { (char)MSDP_TABLE_OPEN, '\0' };
const char MsdpTableStop[] = { (char)MSDP_TABLE_CLOSE, '\0' };
char *pTable = malloc(strlen(apValue) + 3); /* 3: START, STOP, NUL */
strcpy(pTable, MsdpTableStart);
strcat(pTable, apValue);
strcat(pTable, MsdpTableStop);
if ( strcmp(pProtocol->pVariables[aMSDP]->pValueString, pTable) )
{
free(pProtocol->pVariables[aMSDP]->pValueString);
pProtocol->pVariables[aMSDP]->pValueString = pTable;
pProtocol->pVariables[aMSDP]->bDirty = true;
}
else /* Just discard the table, we've already got one */
{
free(pTable);
}
}
}
}
void MSDPSetArray( descriptor_t *apDescriptor, variable_t aMSDP, const char *apValue )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol != NULL && apValue != NULL )
{
if ( *apValue == '\0' )
{
/* It's easier to call MSDPSetString if the value is empty */
MSDPSetString(apDescriptor, aMSDP, apValue);
}
else if ( VariableNameTable[aMSDP].bString )
{
const char MsdpArrayStart[] = { (char)MSDP_ARRAY_OPEN, '\0' };
const char MsdpArrayStop[] = { (char)MSDP_ARRAY_CLOSE, '\0' };
char *pArray = malloc(strlen(apValue) + 3); /* 3: START, STOP, NUL */
strcpy(pArray, MsdpArrayStart);
strcat(pArray, apValue);
strcat(pArray, MsdpArrayStop);
if ( strcmp(pProtocol->pVariables[aMSDP]->pValueString, pArray) )
{
free(pProtocol->pVariables[aMSDP]->pValueString);
pProtocol->pVariables[aMSDP]->pValueString = pArray;
pProtocol->pVariables[aMSDP]->bDirty = true;
}
else /* Just discard the array, we've already got one */
{
free(pArray);
}
}
}
}
/******************************************************************************
MSSP global functions.
******************************************************************************/
void MSSPSetPlayers( int aPlayers )
{
s_Players = aPlayers;
if ( s_Uptime == 0 )
s_Uptime = time(0);
}
/******************************************************************************
MXP global functions.
******************************************************************************/
const char *MXPCreateTag( descriptor_t *apDescriptor, const char *apTag )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol != NULL && pProtocol->pVariables[eMSDP_MXP]->ValueInt &&
strlen(apTag) < 1000 )
{
static char MXPBuffer [1024];
sprintf( MXPBuffer, "\033[1z%s\033[7z", apTag );
return MXPBuffer;
}
else /* Leave the tag as-is, don't try to MXPify it */
{
return apTag;
}
}
void MXPSendTag( descriptor_t *apDescriptor, const char *apTag )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol != NULL && apTag != NULL && strlen(apTag) < 1000 )
{
if ( pProtocol->pVariables[eMSDP_MXP]->ValueInt )
{
char MXPBuffer [1024];
sprintf(MXPBuffer, "\033[1z%s\033[7z\r\n", apTag );
Write(apDescriptor, MXPBuffer);
}
else if ( pProtocol->bRenegotiate )
{
/* Tijer pointed out that when MUSHclient autoconnects, it fails
* to complete the negotiation. This workaround will attempt to
* renegotiate after the character has connected.
*/
int i; /* Renegotiate everything except TTYPE */
for ( i = eNEGOTIATED_TTYPE+1; i < eNEGOTIATED_MAX; ++i )
{
pProtocol->Negotiated[i] = false;
ConfirmNegotiation(apDescriptor, (negotiated_t)i, true, true);
}
pProtocol->bRenegotiate = false;
pProtocol->bNeedMXPVersion = true;
Negotiate(apDescriptor);
}
}
}
/******************************************************************************
Sound global functions.
******************************************************************************/
void SoundSend( descriptor_t *apDescriptor, const char *apTrigger )
{
const int MaxTriggerLength = 128; /* Used for the buffer size */
if ( apDescriptor != NULL && apTrigger != NULL )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol != NULL && pProtocol->pVariables[eMSDP_SOUND]->ValueInt )
{
if ( pProtocol->bMSDP || pProtocol->bATCP )
{
/* Send the sound trigger through MSDP or ATCP */
MSDPSendPair( apDescriptor, "PLAY_SOUND", apTrigger );
}
else if ( strlen(apTrigger) <= MaxTriggerLength )
{
/* Use an old MSP-style trigger */
char *pBuffer = alloca(MaxTriggerLength+10);
sprintf( pBuffer, "\t!SOUND(%s)", apTrigger );
Write(apDescriptor, pBuffer);
}
}
}
}
/******************************************************************************
Colour global functions.
******************************************************************************/
const char *ColourRGB( descriptor_t *apDescriptor, const char *apRGB )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
if ( pProtocol && pProtocol->pVariables[eMSDP_ANSI_COLORS]->ValueInt )
{
if ( IsValidColour(apRGB) )
{
bool_t bBackground = (tolower(apRGB[0]) == 'b');
int Red = apRGB[1] - '0';
int Green = apRGB[2] - '0';
int Blue = apRGB[3] - '0';
if ( pProtocol->pVariables[eMSDP_XTERM_256_COLORS]->ValueInt )
return GetRGBColour( bBackground, Red, Green, Blue );
else /* Use regular ANSI colour */
return GetAnsiColour( bBackground, Red, Green, Blue );
}
else /* Invalid colour - use this to clear any existing colour. */
{
return s_Clean;
}
}
else /* Don't send any colour, not even clear */
{
return "";
}
}
/******************************************************************************
UTF-8 global functions.
******************************************************************************/
char *UnicodeGet( int aValue )
{
static char Buffer[8];
char *pString = Buffer;
UnicodeAdd( &pString, aValue );
*pString = '\0';
return Buffer;
}
void UnicodeAdd( char **apString, int aValue )
{
if ( aValue < 0x80 )
{
*(*apString)++ = (char)aValue;
}
else if ( aValue < 0x800 )
{
*(*apString)++ = (char)(0xC0 | (aValue>>6));
*(*apString)++ = (char)(0x80 | (aValue & 0x3F));
}
else if ( aValue < 0x10000 )
{
*(*apString)++ = (char)(0xE0 | (aValue>>12));
*(*apString)++ = (char)(0x80 | (aValue>>6 & 0x3F));
*(*apString)++ = (char)(0x80 | (aValue & 0x3F));
}
else if ( aValue < 0x200000 )
{
*(*apString)++ = (char)(0xF0 | (aValue>>18));
*(*apString)++ = (char)(0x80 | (aValue>>12 & 0x3F));
*(*apString)++ = (char)(0x80 | (aValue>>6 & 0x3F));
*(*apString)++ = (char)(0x80 | (aValue & 0x3F));
}
}
/******************************************************************************
Local negotiation functions.
******************************************************************************/
static void Negotiate( descriptor_t *apDescriptor )
{
protocol_t *pProtocol = apDescriptor->pProtocol;
if ( pProtocol->bNegotiated )
{
const char RequestTTYPE [] = { (char)IAC, (char)SB, TELOPT_TTYPE, SEND, (char)IAC, (char)SE, '\0' };
/* Request the client type if TTYPE is supported. */
if ( pProtocol->bTTYPE )
Write(apDescriptor, RequestTTYPE);
/* Check for other protocols. */
ConfirmNegotiation(apDescriptor, eNEGOTIATED_NAWS, true, true);
ConfirmNegotiation(apDescriptor, eNEGOTIATED_CHARSET, true, true);
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MSDP, true, true);
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MSSP, true, true);
ConfirmNegotiation(apDescriptor, eNEGOTIATED_ATCP, true, true);
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MSP, true, true);
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MXP, true, true);
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MCCP, true, true);
}
}
static void PerformHandshake( descriptor_t *apDescriptor, char aCmd, char aProtocol )
{
protocol_t *pProtocol = apDescriptor->pProtocol;
switch ( aProtocol )
{
case (char)TELOPT_TTYPE:
if ( aCmd == (char)WILL )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_TTYPE, true, true);
pProtocol->bTTYPE = true;
if ( !pProtocol->bNegotiated )
{
/* Negotiate for the remaining protocols. */
pProtocol->bNegotiated = true;
Negotiate(apDescriptor);
/* We may need to renegotiate if they don't reply */
pProtocol->bRenegotiate = true;
}
}
else if ( aCmd == (char)WONT )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_TTYPE, false, pProtocol->bTTYPE);
pProtocol->bTTYPE = false;
if ( !pProtocol->bNegotiated )
{
/* Still negotiate, as this client obviously knows how to
* correctly respond to negotiation attempts - but we don't
* ask for TTYPE, as it doesn't support it.
*/
pProtocol->bNegotiated = true;
Negotiate(apDescriptor);
/* We may need to renegotiate if they don't reply */
pProtocol->bRenegotiate = true;
}
}
else if ( aCmd == (char)DO )
{
/* Invalid negotiation, send a rejection */
SendNegotiationSequence( apDescriptor, (char)WONT, (char)aProtocol );
}
break;
case (char)TELOPT_ECHO:
if ( aCmd == (char)DO )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_ECHO, true, true);
pProtocol->bECHO = true;
}
else if ( aCmd == (char)DONT )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_ECHO, false, pProtocol->bECHO);
pProtocol->bECHO = false;
}
else if ( aCmd == (char)WILL )
{
/* Invalid negotiation, send a rejection */
SendNegotiationSequence( apDescriptor, (char)DONT, (char)aProtocol );
}
break;
case (char)TELOPT_NAWS:
if ( aCmd == (char)WILL )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_NAWS, true, true);
pProtocol->bNAWS = true;
/* Renegotiation workaround won't be necessary. */
pProtocol->bRenegotiate = false;
}
else if ( aCmd == (char)WONT )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_NAWS, false, pProtocol->bNAWS);
pProtocol->bNAWS = false;
/* Renegotiation workaround won't be necessary. */
pProtocol->bRenegotiate = false;
}
else if ( aCmd == (char)DO )
{
/* Invalid negotiation, send a rejection */
SendNegotiationSequence( apDescriptor, (char)WONT, (char)aProtocol );
}
break;
case (char)TELOPT_CHARSET:
if ( aCmd == (char)WILL )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_CHARSET, true, true);
if ( !pProtocol->bCHARSET )
{
const char charset_utf8 [] = { (char)IAC, (char)SB, TELOPT_CHARSET, 1, ' ', 'U', 'T', 'F', '-', '8', (char)IAC, (char)SE, '\0' };
Write(apDescriptor, charset_utf8);
pProtocol->bCHARSET = true;
}
}
else if ( aCmd == (char)WONT )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_CHARSET, false, pProtocol->bCHARSET);
pProtocol->bCHARSET = false;
}
else if ( aCmd == (char)DO )
{
/* Invalid negotiation, send a rejection */
SendNegotiationSequence( apDescriptor, (char)WONT, (char)aProtocol );
}
break;
case (char)TELOPT_MSDP:
if ( aCmd == (char)DO )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MSDP, true, true);
if ( !pProtocol->bMSDP )
{
pProtocol->bMSDP = true;
/* Identify the mud to the client. */
MSDPSendPair( apDescriptor, "SERVER_ID", MUD_NAME );
}
}
else if ( aCmd == (char)DONT )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MSDP, false, pProtocol->bMSDP);
pProtocol->bMSDP = false;
}
else if ( aCmd == (char)WILL )
{
/* Invalid negotiation, send a rejection */
SendNegotiationSequence( apDescriptor, (char)DONT, (char)aProtocol );
}
break;
case (char)TELOPT_MSSP:
if ( aCmd == (char)DO )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MSSP, true, true);
if ( !pProtocol->bMSSP )
{
SendMSSP( apDescriptor );
pProtocol->bMSSP = true;
}
}
else if ( aCmd == (char)DONT )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MSSP, false, pProtocol->bMSSP);
pProtocol->bMSSP = false;
}
else if ( aCmd == (char)WILL )
{
/* Invalid negotiation, send a rejection */
SendNegotiationSequence( apDescriptor, (char)DONT, (char)aProtocol );
}
break;
case (char)TELOPT_MCCP:
if ( aCmd == (char)DO )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MCCP, true, true);
if ( !pProtocol->bMCCP )
{
pProtocol->bMCCP = true;
CompressStart( apDescriptor );
}
}
else if ( aCmd == (char)DONT )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MCCP, false, pProtocol->bMCCP);
if ( pProtocol->bMCCP )
{
pProtocol->bMCCP = false;
CompressEnd( apDescriptor );
}
}
else if ( aCmd == (char)WILL )
{
/* Invalid negotiation, send a rejection */
SendNegotiationSequence( apDescriptor, (char)DONT, (char)aProtocol );
}
break;
case (char)TELOPT_MSP:
if ( aCmd == (char)DO )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MSP, true, true);
pProtocol->bMSP = true;
}
else if ( aCmd == (char)DONT )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MSP, false, pProtocol->bMSP);
pProtocol->bMSP = false;
}
else if ( aCmd == (char)WILL )
{
/* Invalid negotiation, send a rejection */
SendNegotiationSequence( apDescriptor, (char)DONT, (char)aProtocol );
}
break;
case (char)TELOPT_MXP:
if ( aCmd == (char)WILL || aCmd == (char)DO )
{
if ( aCmd == (char)WILL )
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MXP, true, true);
else /* aCmd == (char)DO */
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MXP2, true, true);
if ( !pProtocol->bMXP )
{
/* Enable MXP. */
const char EnableMXP[] = { (char)IAC, (char)SB, TELOPT_MXP, (char)IAC, (char)SE, '\0' };
Write(apDescriptor, EnableMXP);
/* Create a secure channel, and note that MXP is active. */
Write(apDescriptor, "\033[7z");
pProtocol->bMXP = true;
pProtocol->pVariables[eMSDP_MXP]->ValueInt = 1;
if ( pProtocol->bNeedMXPVersion )
MXPSendTag( apDescriptor, "<VERSION>" );
}
}
else if ( aCmd == (char)WONT )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MXP, false, pProtocol->bMXP);
if ( !pProtocol->bMXP )
{
/* The MXP standard doesn't actually specify whether you should
* negotiate with IAC DO MXP or IAC WILL MXP. As a result, some
* clients support one, some the other, and some support both.
*
* Therefore we first try IAC DO MXP, and if the client replies
* with WONT, we try again (here) with IAC WILL MXP.
*/
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MXP2, true, true);
}
else /* The client is actually asking us to switch MXP off. */
{
pProtocol->bMXP = false;
}
}
else if ( aCmd == (char)DONT )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_MXP2, false, pProtocol->bMXP);
pProtocol->bMXP = false;
}
break;
case (char)TELOPT_ATCP:
if ( aCmd == (char)WILL )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_ATCP, true, true);
/* If we don't support MSDP, fake it with ATCP */
if ( !pProtocol->bMSDP && !pProtocol->bATCP )
{
pProtocol->bATCP = true;
#ifdef MUDLET_PACKAGE
/* Send the Mudlet GUI package to the user. */
if ( MatchString( "Mudlet",
pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString ) )
{
SendATCP( apDescriptor, "Client.GUI", MUDLET_PACKAGE );
}
#endif /* MUDLET_PACKAGE */
/* Identify the mud to the client. */
MSDPSendPair( apDescriptor, "SERVER_ID", MUD_NAME );
}
}
else if ( aCmd == (char)WONT )
{
ConfirmNegotiation(apDescriptor, eNEGOTIATED_ATCP, false, pProtocol->bATCP);
pProtocol->bATCP = false;
}
else if ( aCmd == (char)DO )
{
/* Invalid negotiation, send a rejection */
SendNegotiationSequence( apDescriptor, (char)WONT, (char)aProtocol );
}
break;
default:
if ( aCmd == (char)WILL )
{
/* Invalid negotiation, send a rejection */
SendNegotiationSequence( apDescriptor, (char)DONT, (char)aProtocol );
}
else if ( aCmd == (char)DO )
{
/* Invalid negotiation, send a rejection */
SendNegotiationSequence( apDescriptor, (char)WONT, (char)aProtocol );
}
break;
}
}
static void PerformSubnegotiation( descriptor_t *apDescriptor, char aCmd, char *apData, int aSize )
{
protocol_t *pProtocol = apDescriptor->pProtocol;
switch ( aCmd )
{
case (char)TELOPT_TTYPE:
if ( pProtocol->bTTYPE )
{
/* Store the client name. */
const int MaxClientLength = 64;
char *pClientName = alloca(MaxClientLength+1);
int i = 0, j = 1;
bool_t bStopCyclicTTYPE = false;
for ( ; apData[j] != '\0' && i < MaxClientLength; ++j )
{
if ( isprint(apData[j]) )
pClientName[i++] = apData[j];
}
pClientName[i] = '\0';
/* Store the first TTYPE as the client name */
if ( !strcmp(pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString, "Unknown") )
{
free(pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString);
pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString = AllocString(pClientName);
/* This is a bit nasty, but using cyclic TTYPE on windows telnet
* causes it to lock up. None of the clients we need to cycle
* with send ANSI to start with anyway, so we shouldn't have any
* conflicts.
*
* An alternative solution is to use escape sequences to check
* for windows telnet prior to negotiation, and this also avoids
* the player losing echo, but it has other issues. Because the
* escape codes are technically in-band, even though they'll be
* stripped from the display, the newlines will still cause some
* scrolling. Therefore you need to either pause the session
* for a few seconds before displaying the login screen, or wait
* until the player has entered their name before negotiating.
*/
if ( !strcmp(pClientName,"ANSI") )
bStopCyclicTTYPE = true;
}
/* Cycle through the TTYPEs until we get the same result twice, or
* find ourselves back at the start.
*
* If the client follows RFC1091 properly then it will indicate the
* end of the list by repeating the last response, and then return
* to the top of the list. If you're the trusting type, then feel
* free to remove the second strcmp ;)
*/
if ( pProtocol->pLastTTYPE == NULL ||
(strcmp(pProtocol->pLastTTYPE, pClientName) &&
strcmp(pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString, pClientName)) )
{
char RequestTTYPE [] = { (char)IAC, (char)SB, TELOPT_TTYPE, SEND, (char)IAC, (char)SE, '\0' };
const char *pStartPos = strstr( pClientName, "-" );
/* Store the TTYPE */
free(pProtocol->pLastTTYPE);
pProtocol->pLastTTYPE = AllocString(pClientName);
/* Look for 256 colour support */
if ( pStartPos != NULL && MatchString(pStartPos, "-256color") )
{
/* This is currently the only way to detect support for 256
* colours in TinTin++, WinTin++ and BlowTorch.
*/
pProtocol->pVariables[eMSDP_XTERM_256_COLORS]->ValueInt = 1;
pProtocol->b256Support = eYES;
}
/* Request another TTYPE */
if ( !bStopCyclicTTYPE )
Write(apDescriptor, RequestTTYPE);
}
if ( PrefixString("Mudlet", pClientName) )
{
/* Mudlet beta 15 and later supports 256 colours, but we can't
* identify it from the mud - everything prior to 1.1 claims
* to be version 1.0, so we just don't know.
*/
pProtocol->b256Support = eSOMETIMES;
if ( strlen(pClientName) > 7 )
{
pClientName[6] = '\0';
free(pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString);
pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString = AllocString(pClientName);
free(pProtocol->pVariables[eMSDP_CLIENT_VERSION]->pValueString);
pProtocol->pVariables[eMSDP_CLIENT_VERSION]->pValueString = AllocString(pClientName+7);
/* Mudlet 1.1 and later supports 256 colours. */
if ( strcmp(pProtocol->pVariables[eMSDP_CLIENT_VERSION]->pValueString, "1.1") >= 0 )
{
pProtocol->pVariables[eMSDP_XTERM_256_COLORS]->ValueInt = 1;
pProtocol->b256Support = eYES;
}
}
}
else if ( MatchString(pClientName, "EMACS-RINZAI") )
{
/* We know for certain that this client has support */
pProtocol->pVariables[eMSDP_XTERM_256_COLORS]->ValueInt = 1;
pProtocol->b256Support = eYES;
}
else if ( PrefixString("DecafMUD", pClientName) )
{
/* We know for certain that this client has support */
pProtocol->pVariables[eMSDP_XTERM_256_COLORS]->ValueInt = 1;
pProtocol->b256Support = eYES;
if ( strlen(pClientName) > 9 )
{
pClientName[8] = '\0';
free(pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString);
pProtocol->pVariables[eMSDP_CLIENT_ID]->pValueString = AllocString(pClientName);
free(pProtocol->pVariables[eMSDP_CLIENT_VERSION]->pValueString);
pProtocol->pVariables[eMSDP_CLIENT_VERSION]->pValueString = AllocString(pClientName+9);
}
}
else if ( MatchString(pClientName, "MUSHCLIENT") ||
MatchString(pClientName, "CMUD") ||
MatchString(pClientName, "ATLANTIS") ||
MatchString(pClientName, "KILDCLIENT") ||
MatchString(pClientName, "TINTIN++") ||
MatchString(pClientName, "TINYFUGUE") )
{
/* We know that some versions of this client have support */
pProtocol->b256Support = eSOMETIMES;
}
else if ( MatchString(pClientName, "ZMUD") )
{
/* We know for certain that this client does not have support */
pProtocol->b256Support = eNO;
}
}
break;
case (char)TELOPT_NAWS:
if ( pProtocol->bNAWS )
{
/* Store the new width. */
pProtocol->ScreenWidth = (unsigned char)apData[0];
pProtocol->ScreenWidth <<= 8;
pProtocol->ScreenWidth += (unsigned char)apData[1];
/* Store the new height. */
pProtocol->ScreenHeight = (unsigned char)apData[2];
pProtocol->ScreenHeight <<= 8;
pProtocol->ScreenHeight += (unsigned char)apData[3];
}
break;
case (char)TELOPT_CHARSET:
if ( pProtocol->bCHARSET )
{
/* Because we're only asking about UTF-8, we can just check the
* first character. If you ask for more than one CHARSET you'll
* need to read through the results to see which are accepted.
*
* Note that the user must also use a unicode font!
*/
if ( apData[0] == ACCEPTED )
pProtocol->pVariables[eMSDP_UTF_8]->ValueInt = 1;
}
break;
case (char)TELOPT_MSDP:
if ( pProtocol->bMSDP )
{
ParseMSDP( apDescriptor, apData );
}
break;
case (char)TELOPT_ATCP:
if ( pProtocol->bATCP )
{
ParseATCP( apDescriptor, apData );
}
break;
default: /* Unknown subnegotiation, so we simply ignore it. */
break;
}
}
static void SendNegotiationSequence( descriptor_t *apDescriptor, char aCmd, char aProtocol )
{
char NegotiateSequence[4];
NegotiateSequence[0] = (char)IAC;
NegotiateSequence[1] = aCmd;
NegotiateSequence[2] = aProtocol;
NegotiateSequence[3] = '\0';
Write(apDescriptor, NegotiateSequence);
}
static bool_t ConfirmNegotiation( descriptor_t *apDescriptor, negotiated_t aProtocol, bool_t abWillDo, bool_t abSendReply )
{
bool_t bResult = false;
if ( aProtocol >= eNEGOTIATED_TTYPE && aProtocol < eNEGOTIATED_MAX )
{
/* Only negotiate if the state has changed. */
if ( apDescriptor->pProtocol->Negotiated[aProtocol] != abWillDo )
{
/* Store the new state. */
apDescriptor->pProtocol->Negotiated[aProtocol] = abWillDo;
bResult = true;
if ( abSendReply )
{
switch ( aProtocol )
{
case eNEGOTIATED_TTYPE:
SendNegotiationSequence( apDescriptor, abWillDo ? DO : DONT, TELOPT_TTYPE );
break;
case eNEGOTIATED_ECHO:
SendNegotiationSequence( apDescriptor, abWillDo ? WILL : WONT, TELOPT_ECHO );
break;
case eNEGOTIATED_NAWS:
SendNegotiationSequence( apDescriptor, abWillDo ? DO : DONT, TELOPT_NAWS );
break;
case eNEGOTIATED_CHARSET:
SendNegotiationSequence( apDescriptor, abWillDo ? DO : DONT, TELOPT_CHARSET );
break;
case eNEGOTIATED_MSDP:
SendNegotiationSequence( apDescriptor, abWillDo ? WILL : WONT, TELOPT_MSDP );
break;
case eNEGOTIATED_MSSP:
SendNegotiationSequence( apDescriptor, abWillDo ? WILL : WONT, TELOPT_MSSP );
break;
case eNEGOTIATED_ATCP:
SendNegotiationSequence( apDescriptor, abWillDo ? DO : DONT, (char)TELOPT_ATCP );
break;
case eNEGOTIATED_MSP:
SendNegotiationSequence( apDescriptor, abWillDo ? WILL : WONT, TELOPT_MSP );
break;
case eNEGOTIATED_MXP:
SendNegotiationSequence( apDescriptor, abWillDo ? DO : DONT, TELOPT_MXP );
break;
case eNEGOTIATED_MXP2:
SendNegotiationSequence( apDescriptor, abWillDo ? WILL : WONT, TELOPT_MXP );
break;
case eNEGOTIATED_MCCP:
#ifdef USING_MCCP
SendNegotiationSequence( apDescriptor, abWillDo ? WILL : WONT, TELOPT_MCCP );
#endif /* USING_MCCP */
break;
default:
bResult = false;
break;
}
}
}
}
return bResult;
}
/******************************************************************************
Local MSDP functions.
******************************************************************************/
static void ParseMSDP( descriptor_t *apDescriptor, const char *apData )
{
char Variable[MSDP_VAL][MAX_MSDP_SIZE+1] = { {'\0'}, {'\0'} };
char *pPos = NULL, *pStart = NULL;
while ( *apData )
{
switch ( *apData )
{
case MSDP_VAR: case MSDP_VAL:
pPos = pStart = Variable[*apData++-1];
break;
default: /* Anything else */
if ( pPos && pPos-pStart < MAX_MSDP_SIZE )
{
*pPos++ = *apData;
*pPos = '\0';
}
if ( *++apData )
continue;
}
ExecuteMSDPPair( apDescriptor, Variable[MSDP_VAR-1], Variable[MSDP_VAL-1] );
Variable[MSDP_VAL-1][0] = '\0';
}
}
static void ExecuteMSDPPair( descriptor_t *apDescriptor, const char *apVariable, const char *apValue )
{
if ( apVariable[0] != '\0' && apValue[0] != '\0' )
{
if ( MatchString(apVariable, "SEND") )
{
bool_t bDone = false;
int i; /* Loop counter */
for ( i = eMSDP_NONE+1; i < eMSDP_MAX && !bDone; ++i )
{
if ( MatchString(apValue, VariableNameTable[i].pName) )
{
MSDPSend( apDescriptor, (variable_t)i );
bDone = true;
}
}
}
else if ( MatchString(apVariable, "REPORT") )
{
bool_t bDone = false;
int i; /* Loop counter */
for ( i = eMSDP_NONE+1; i < eMSDP_MAX && !bDone; ++i )
{
if ( MatchString(apValue, VariableNameTable[i].pName) )
{
apDescriptor->pProtocol->pVariables[i]->bReport = true;
apDescriptor->pProtocol->pVariables[i]->bDirty = true;
bDone = true;
}
}
}
else if ( MatchString(apVariable, "RESET") )
{
if ( MatchString(apValue, "REPORTABLE_VARIABLES") ||
MatchString(apValue, "REPORTED_VARIABLES") )
{
int i; /* Loop counter */
for ( i = eMSDP_NONE+1; i < eMSDP_MAX; ++i )
{
if ( apDescriptor->pProtocol->pVariables[i]->bReport )
{
apDescriptor->pProtocol->pVariables[i]->bReport = false;
apDescriptor->pProtocol->pVariables[i]->bDirty = false;
}
}
}
}
else if ( MatchString(apVariable, "UNREPORT") )
{
bool_t bDone = false;
int i; /* Loop counter */
for ( i = eMSDP_NONE+1; i < eMSDP_MAX && !bDone; ++i )
{
if ( MatchString(apValue, VariableNameTable[i].pName) )
{
apDescriptor->pProtocol->pVariables[i]->bReport = false;
apDescriptor->pProtocol->pVariables[i]->bDirty = false;
bDone = true;
}
}
}
else if ( MatchString(apVariable, "LIST") )
{
if ( MatchString(apValue, "COMMANDS") )
{
const char MSDPCommands[] = "LIST REPORT RESET SEND UNREPORT";
MSDPSendList( apDescriptor, "COMMANDS", MSDPCommands );
}
else if ( MatchString(apValue, "LISTS") )
{
const char MSDPCommands[] = "COMMANDS LISTS CONFIGURABLE_VARIABLES REPORTABLE_VARIABLES REPORTED_VARIABLES SENDABLE_VARIABLES GUI_VARIABLES";
MSDPSendList( apDescriptor, "LISTS", MSDPCommands );
}
/* Split this into two if some variables aren't REPORTABLE */
else if ( MatchString(apValue, "SENDABLE_VARIABLES") ||
MatchString(apValue, "REPORTABLE_VARIABLES") )
{
char MSDPCommands[MAX_OUTPUT_BUFFER] = { '\0' };
int i; /* Loop counter */
for ( i = eMSDP_NONE+1; i < eMSDP_MAX; ++i )
{
if ( !VariableNameTable[i].bGUI )
{
/* Add the separator between variables */
strcat( MSDPCommands, " " );
/* Add the variable to the list */
strcat( MSDPCommands, VariableNameTable[i].pName );
}
}
MSDPSendList( apDescriptor, apValue, MSDPCommands );
}
else if ( MatchString(apValue, "REPORTED_VARIABLES") )
{
char MSDPCommands[MAX_OUTPUT_BUFFER] = { '\0' };
int i; /* Loop counter */
for ( i = eMSDP_NONE+1; i < eMSDP_MAX; ++i )
{
if ( apDescriptor->pProtocol->pVariables[i]->bReport )
{
/* Add the separator between variables */
if ( MSDPCommands[0] != '\0' )
strcat( MSDPCommands, " " );
/* Add the variable to the list */
strcat( MSDPCommands, VariableNameTable[i].pName );
}
}
MSDPSendList( apDescriptor, apValue, MSDPCommands );
}
else if ( MatchString(apValue, "CONFIGURABLE_VARIABLES") )
{
char MSDPCommands[MAX_OUTPUT_BUFFER] = { '\0' };
int i; /* Loop counter */
for ( i = eMSDP_NONE+1; i < eMSDP_MAX; ++i )
{
if ( VariableNameTable[i].bConfigurable )
{
/* Add the separator between variables */
if ( MSDPCommands[0] != '\0' )
strcat( MSDPCommands, " " );
/* Add the variable to the list */
strcat( MSDPCommands, VariableNameTable[i].pName );
}
}
MSDPSendList( apDescriptor, "CONFIGURABLE_VARIABLES", MSDPCommands );
}
else if ( MatchString(apValue, "GUI_VARIABLES") )
{
char MSDPCommands[MAX_OUTPUT_BUFFER] = { '\0' };
int i; /* Loop counter */
for ( i = eMSDP_NONE+1; i < eMSDP_MAX; ++i )
{
if ( VariableNameTable[i].bGUI )
{
/* Add the separator between variables */
if ( MSDPCommands[0] != '\0' )
strcat( MSDPCommands, " " );
/* Add the variable to the list */
strcat( MSDPCommands, VariableNameTable[i].pName );
}
}
MSDPSendList( apDescriptor, apValue, MSDPCommands );
}
}
else /* Set any configurable variables */
{
int i; /* Loop counter */
for ( i = eMSDP_NONE+1; i < eMSDP_MAX; ++i )
{
if ( VariableNameTable[i].bConfigurable )
{
if ( MatchString(apVariable, VariableNameTable[i].pName) )
{
if ( VariableNameTable[i].bString )
{
/* A write-once variable can only be set if the value
* is "Unknown". This is for things like client name,
* where we don't really want the player overwriting a
* proper client name with junk - but on the other hand,
* its possible a client may choose to use MSDP to
* identify itself.
*/
if ( !VariableNameTable[i].bWriteOnce ||
!strcmp(apDescriptor->pProtocol->pVariables[i]->pValueString, "Unknown") )
{
/* Store the new value if it's valid */
char *pBuffer = alloca(VariableNameTable[i].Max+1);
int j; /* Loop counter */
for ( j = 0; j < VariableNameTable[i].Max && *apValue != '\0'; ++apValue )
{
if ( isprint(*apValue) )
pBuffer[j++] = *apValue;
}
pBuffer[j++] = '\0';
if ( j >= VariableNameTable[i].Min )
{
free(apDescriptor->pProtocol->pVariables[i]->pValueString);
apDescriptor->pProtocol->pVariables[i]->pValueString = AllocString(pBuffer);
}
}
}
else /* This variable only accepts numeric values */
{
/* Strip any leading spaces */
while ( *apValue == ' ' )
++apValue;
if ( *apValue != '\0' && IsNumber(apValue) )
{
int Value = atoi(apValue);
if ( Value >= VariableNameTable[i].Min &&
Value <= VariableNameTable[i].Max )
{
apDescriptor->pProtocol->pVariables[i]->ValueInt = Value;
}
}
}
}
}
}
}
}
}
/******************************************************************************
Local ATCP functions.
******************************************************************************/
static void ParseATCP( descriptor_t *apDescriptor, const char *apData )
{
char Variable[MSDP_VAL][MAX_MSDP_SIZE+1] = { {'\0'}, {'\0'} };
char *pPos = NULL, *pStart = NULL;
while ( *apData )
{
switch ( *apData )
{
case '@':
pPos = pStart = Variable[0];
apData++;
break;
case ' ':
pPos = pStart = Variable[1];
apData++;
break;
default: /* Anything else */
if ( pPos && pPos-pStart < MAX_MSDP_SIZE )
{
*pPos++ = *apData;
*pPos = '\0';
}
if ( *++apData )
continue;
}
ExecuteMSDPPair( apDescriptor, Variable[MSDP_VAR-1], Variable[MSDP_VAL-1] );
Variable[MSDP_VAL-1][0] = '\0';
}
}
#ifdef MUDLET_PACKAGE
static void SendATCP( descriptor_t *apDescriptor, const char *apVariable, const char *apValue )
{
char ATCPBuffer[MAX_VARIABLE_LENGTH+1] = { '\0' };
if ( apVariable != NULL && apValue != NULL )
{
protocol_t *pProtocol = apDescriptor ? apDescriptor->pProtocol : NULL;
/* Should really be replaced with a dynamic buffer */
int RequiredBuffer = strlen(apVariable) + strlen(apValue) + 12;
if ( RequiredBuffer >= MAX_VARIABLE_LENGTH )
{
if ( RequiredBuffer - strlen(apValue) < MAX_VARIABLE_LENGTH )
{
sprintf( ATCPBuffer,
"SendATCP: %s %d bytes (exceeds MAX_VARIABLE_LENGTH of %d).\n",
apVariable, RequiredBuffer, MAX_VARIABLE_LENGTH );
}
else /* The variable name itself is too long */
{
sprintf( ATCPBuffer,
"SendATCP: Variable name has a length of %d bytes (exceeds MAX_VARIABLE_LENGTH of %d).\n",
RequiredBuffer, MAX_VARIABLE_LENGTH );
}
ReportBug( ATCPBuffer );
ATCPBuffer[0] = '\0';
}
else if ( pProtocol->bATCP )
{
sprintf( ATCPBuffer, "%c%c%c%s %s%c%c",
IAC, SB, TELOPT_ATCP, apVariable, apValue, IAC, SE );
}
/* Just in case someone calls this function without checking ATCP */
if ( ATCPBuffer[0] != '\0' )
Write( apDescriptor, ATCPBuffer );
}
}
#endif /* MUDLET_PACKAGE */
/******************************************************************************
Local MSSP functions.
******************************************************************************/
static const char *GetMSSP_Players()
{
static char Buffer[32];
sprintf( Buffer, "%d", s_Players );
return Buffer;
}
static const char *GetMSSP_Uptime()
{
static char Buffer[32];
sprintf( Buffer, "%d", (int)s_Uptime );
return Buffer;
}
/* Macro for readability, but you can remove it if you don't like it */
#define FUNCTION_CALL(f) "", f
static void SendMSSP( descriptor_t *apDescriptor )
{
char MSSPBuffer[MAX_MSSP_BUFFER];
char MSSPPair[128];
int SizeBuffer = 3; /* IAC SB MSSP */
int i; /* Loop counter */
/* Before updating the following table, please read the MSSP specification:
*
* http://tintin.sourceforge.net/mssp/
*
* It's important that you use the correct format and spelling for the MSSP
* variables, otherwise crawlers may reject the data as invalid.
*/
static MSSP_t MSSPTable[] =
{
/* Required */
{ "NAME", MUD_NAME }, /* Change this in protocol.h */
{ "PLAYERS", FUNCTION_CALL( GetMSSP_Players ) },
{ "UPTIME" , FUNCTION_CALL( GetMSSP_Uptime ) },
/* Generic */
{ "CRAWL DELAY", "-1" },
/*
{ "HOSTNAME", "" },
{ "PORT", "" },
{ "CODEBASE", "" },
{ "CONTACT", "" },
{ "CREATED", "" },
{ "ICON", "" },
{ "IP", "" },
{ "LANGUAGE", "" },
{ "LOCATION", "" },
{ "MINIMUM AGE", "" },
{ "WEBSITE", "" },
*/
/* Categorisation */
/*
{ "FAMILY", "" },
{ "GENRE", "" },
{ "GAMEPLAY", "" },
{ "STATUS", "" },
{ "GAMESYSTEM", "" },
{ "INTERMUD", "" },
{ "SUBGENRE", "" },
*/
/* World */
/*
{ "AREAS", "0" },
{ "HELPFILES", "0" },
{ "MOBILES", "0" },
{ "OBJECTS", "0" },
{ "ROOMS", "0" },
{ "CLASSES", "0" },
{ "LEVELS", "0" },
{ "RACES", "0" },
{ "SKILLS", "0" },
*/
/* Protocols */
/*
{ "ANSI", "1" },
{ "GMCP", "0" },
#ifdef USING_MCCP
{ "MCCP", "1" },
#else
{ "MCCP", "0" },
#endif // USING_MCCP
{ "MCP", "0" },
{ "MSDP", "1" },
{ "MSP", "1" },
{ "MXP", "1" },
{ "PUEBLO", "0" },
{ "UTF-8", "1" },
{ "VT100", "0" },
{ "XTERM 256 COLORS", "1" },
*/
/* Commercial */
/*
{ "PAY TO PLAY", "0" },
{ "PAY FOR PERKS", "0" },
*/
/* Hiring */
/*
{ "HIRING BUILDERS", "0" },
{ "HIRING CODERS", "0" },
*/
/* Extended variables */
/* World */
/*
{ "DBSIZE", "0" },
{ "EXITS", "0" },
{ "EXTRA DESCRIPTIONS", "0" },
{ "MUDPROGS", "0" },
{ "MUDTRIGS", "0" },
{ "RESETS", "0" },
*/
/* Game */
/*
{ "ADULT MATERIAL", "0" },
{ "MULTICLASSING", "0" },
{ "NEWBIE FRIENDLY", "0" },
{ "PLAYER CITIES", "0" },
{ "PLAYER CLANS", "0" },
{ "PLAYER CRAFTING", "0" },
{ "PLAYER GUILDS", "0" },
{ "EQUIPMENT SYSTEM", "" },
{ "MULTIPLAYING", "" },
{ "PLAYERKILLING", "" },
{ "QUEST SYSTEM", "" },
{ "ROLEPLAYING", "" },
{ "TRAINING SYSTEM", "" },
{ "WORLD ORIGINALITY", "" },
*/
/* Protocols */
/*
{ "ATCP", "1" },
{ "SSL", "0" },
{ "ZMP", "0" },
*/
{ NULL, NULL } /* This must always be last. */
};
/* Begin the subnegotiation sequence */
sprintf( MSSPBuffer, "%c%c%c", IAC, SB, TELOPT_MSSP );
for ( i = 0; MSSPTable[i].pName != NULL; ++i )
{
int SizePair;
/* Retrieve the next MSSP variable/value pair */
sprintf( MSSPPair, "%c%s%c%s", MSSP_VAR, MSSPTable[i].pName, MSSP_VAL,
MSSPTable[i].pFunction ? (*MSSPTable[i].pFunction)() :
MSSPTable[i].pValue );
/* Make sure we don't overflow the buffer */
SizePair = strlen(MSSPPair);
if ( SizePair+SizeBuffer < MAX_MSSP_BUFFER-4 )
{
strcat( MSSPBuffer, MSSPPair );
SizeBuffer += SizePair;
}
}
/* End the subnegotiation sequence */
sprintf( MSSPPair, "%c%c", IAC, SE );
strcat( MSSPBuffer, MSSPPair );
/* Send the sequence */
Write( apDescriptor, MSSPBuffer );
}
/******************************************************************************
Local MXP functions.
******************************************************************************/
static char *GetMxpTag( const char *apTag, const char *apText )
{
static char MXPBuffer [64];
const char *pStartPos = strstr(apText, apTag);
if ( pStartPos != NULL )
{
const char *pEndPos = apText+strlen(apText);
pStartPos += strlen(apTag); /* Add length of the tag */
if ( pStartPos < pEndPos )
{
int Index = 0;
/* Some clients use quotes...and some don't. */
if ( *pStartPos == '\"' )
pStartPos++;
for ( ; pStartPos < pEndPos && Index < 60; ++pStartPos )
{
char Letter = *pStartPos;
if ( Letter == '.' || isdigit(Letter) || isalpha(Letter) )
{
MXPBuffer[Index++] = Letter;
}
else /* Return the result */
{
MXPBuffer[Index] = '\0';
return MXPBuffer;
}
}
}
}
/* Return NULL to indicate no tag was found. */
return NULL;
}
/******************************************************************************
Local colour functions.
******************************************************************************/
static const char *GetAnsiColour( bool_t abBackground, int aRed, int aGreen, int aBlue )
{
if ( aRed == aGreen && aRed == aBlue && aRed < 2)
return abBackground ? s_BackBlack : aRed >= 1 ? s_BoldBlack : s_DarkBlack;
else if ( aRed == aGreen && aRed == aBlue )
return abBackground ? s_BackWhite : aRed >= 4 ? s_BoldWhite : s_DarkWhite;
else if ( aRed > aGreen && aRed > aBlue )
return abBackground ? s_BackRed : aRed >= 3 ? s_BoldRed : s_DarkRed;
else if ( aRed == aGreen && aRed > aBlue )
return abBackground ? s_BackYellow : aRed >= 3 ? s_BoldYellow : s_DarkYellow;
else if ( aRed == aBlue && aRed > aGreen )
return abBackground ? s_BackMagenta : aRed >= 3 ? s_BoldMagenta : s_DarkMagenta;
else if ( aGreen > aBlue )
return abBackground ? s_BackGreen : aGreen >= 3 ? s_BoldGreen : s_DarkGreen;
else if ( aGreen == aBlue )
return abBackground ? s_BackCyan : aGreen >= 3 ? s_BoldCyan : s_DarkCyan;
else /* aBlue is the highest */
return abBackground ? s_BackBlue : aBlue >= 3 ? s_BoldBlue : s_DarkBlue;
}
static const char *GetRGBColour( bool_t abBackground, int aRed, int aGreen, int aBlue )
{
static char Result[16];
int ColVal = 16 + (aRed * 36) + (aGreen * 6) + aBlue;
sprintf( Result, "\033[%c8;5;%c%c%cm",
'3'+abBackground, /* Background */
'0'+(ColVal/100), /* Red */
'0'+((ColVal%100)/10), /* Green */
'0'+(ColVal%10) ); /* Blue */
return Result;
}
static bool_t IsValidColour( const char *apArgument )
{
int i; /* Loop counter */
/* The sequence is 4 bytes, but we can ignore anything after it. */
if ( apArgument == NULL || strlen(apArgument) < 4 )
return false;
/* The first byte indicates foreground/background. */
if ( tolower(apArgument[0]) != 'f' && tolower(apArgument[0]) != 'b' )
return false;
/* The remaining three bytes must each be in the range '0' to '5'. */
for ( i = 1; i <= 3; ++i )
{
if ( apArgument[i] < '0' || apArgument[i] > '5' )
return false;
}
/* It's a valid foreground or background colour */
return true;
}
/******************************************************************************
Other local functions.
******************************************************************************/
static bool_t MatchString( const char *apFirst, const char *apSecond )
{
while ( *apFirst && tolower(*apFirst) == tolower(*apSecond) )
++apFirst, ++apSecond;
return ( !*apFirst && !*apSecond );
}
static bool_t PrefixString( const char *apPart, const char *apWhole )
{
while ( *apPart && tolower(*apPart) == tolower(*apWhole) )
++apPart, ++apWhole;
return ( !*apPart );
}
static bool_t IsNumber( const char *apString )
{
while ( *apString && isdigit(*apString) )
++apString;
return ( !*apString );
}
static char *AllocString( const char *apString )
{
char *pResult = NULL;
if ( apString != NULL )
{
int Size = strlen(apString);
pResult = malloc(Size+1);
if ( pResult != NULL )
strcpy( pResult, apString );
}
return pResult;
}