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protocol.c
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/******************************************************************************
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" );
}
/*************** START GMCP ***************/
static void ParseGMCP( descriptor_t *apDescriptor, char *string );
static char *OneArg( char *fStr, char *bStr );
static char *GMCPStrip( char *text );
static void WriteGMCP( descriptor_t *apDescriptor, GMCP_PACKAGE package );
static jsmntok_t *jsmn_alloc_token( jsmn_parser *parser, jsmntok_t *tokens, const size_t num_tokens );
static void jsmn_fill_token( jsmntok_t *token, const jsmntype_t type, const int start, const int end );
static int jsmn_parse_primitive( jsmn_parser *parser, const char *js, const size_t len, jsmntok_t *tokens, const size_t num_tokens );
static int jsmn_parse_string( jsmn_parser *parser, const char *js, const size_t len, jsmntok_t *tokens, const size_t num_tokens );
int jsmn_parse( jsmn_parser *parser, const char *js, const size_t len, jsmntok_t *tokens, const unsigned int num_tokens );
void jsmn_init( jsmn_parser *parser );
char *PullJSONString( int start, int end, const char *string );
/*************** END GMCP ***************/
/******************************************************************************
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;
}
}
/*************** START GMCP ***************/
pProtocol->bGMCP = false;
pProtocol->bSGA = false;
for ( i = 0; i < GMCP_SUPPORT_MAX; i++ )
pProtocol->bGMCPSupport[i] = 0;
for ( i = 0; i < GMCP_MAX; i++ )
pProtocol->GMCPVariable[i] = AllocString( "" );
for ( i = 0; i < GMCP_PACKAGE_MAX; i++ )
pProtocol->bGMCPUpdatePackage[i] = 0;
/*************** END GMCP ***************/
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);
/*************** START GMCP ***************/
for ( i = 0; i < GMCP_MAX; i++ )
free( apProtocol->GMCPVariable[i] );
/*************** END GMCP ***************/
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++;