mirror of
https://github.com/Q3Rally-Team/q3rally.git
synced 2024-11-23 04:12:02 +00:00
869 lines
17 KiB
C
869 lines
17 KiB
C
/*
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===========================================================================
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Copyright (C) 1999-2005 Id Software, Inc.
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This file is part of Quake III Arena source code.
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Quake III Arena source code is free software; you can redistribute it
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and/or modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of the License,
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or (at your option) any later version.
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Quake III Arena source code is distributed in the hope that it will be
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useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with Quake III Arena source code; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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===========================================================================
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*/
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// cmd.c -- Quake script command processing module
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#include "q_shared.h"
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#include "qcommon.h"
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#define MAX_CMD_BUFFER 16384
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#define MAX_CMD_LINE 1024
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typedef struct {
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byte *data;
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int maxsize;
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int cursize;
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} cmd_t;
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int cmd_wait;
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cmd_t cmd_text;
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byte cmd_text_buf[MAX_CMD_BUFFER];
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//=============================================================================
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/*
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============
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Cmd_Wait_f
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Causes execution of the remainder of the command buffer to be delayed until
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next frame. This allows commands like:
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bind g "cmd use rocket ; +attack ; wait ; -attack ; cmd use blaster"
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============
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*/
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void Cmd_Wait_f( void ) {
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if ( Cmd_Argc() == 2 ) {
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cmd_wait = atoi( Cmd_Argv( 1 ) );
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if ( cmd_wait < 0 )
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cmd_wait = 1; // ignore the argument
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} else {
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cmd_wait = 1;
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}
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}
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/*
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=============================================================================
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COMMAND BUFFER
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=============================================================================
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*/
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/*
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============
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Cbuf_Init
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============
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*/
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void Cbuf_Init (void)
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{
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cmd_text.data = cmd_text_buf;
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cmd_text.maxsize = MAX_CMD_BUFFER;
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cmd_text.cursize = 0;
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}
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/*
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============
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Cbuf_AddText
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Adds command text at the end of the buffer, does NOT add a final \n
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============
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*/
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void Cbuf_AddText( const char *text ) {
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int l;
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l = strlen (text);
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if (cmd_text.cursize + l >= cmd_text.maxsize)
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{
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Com_Printf ("Cbuf_AddText: overflow\n");
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return;
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}
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Com_Memcpy(&cmd_text.data[cmd_text.cursize], text, l);
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cmd_text.cursize += l;
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}
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/*
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============
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Cbuf_InsertText
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Adds command text immediately after the current command
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Adds a \n to the text
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============
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*/
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void Cbuf_InsertText( const char *text ) {
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int len;
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int i;
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len = strlen( text ) + 1;
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if ( len + cmd_text.cursize > cmd_text.maxsize ) {
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Com_Printf( "Cbuf_InsertText overflowed\n" );
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return;
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}
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// move the existing command text
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for ( i = cmd_text.cursize - 1 ; i >= 0 ; i-- ) {
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cmd_text.data[ i + len ] = cmd_text.data[ i ];
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}
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// copy the new text in
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Com_Memcpy( cmd_text.data, text, len - 1 );
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// add a \n
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cmd_text.data[ len - 1 ] = '\n';
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cmd_text.cursize += len;
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}
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/*
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============
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Cbuf_ExecuteText
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============
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*/
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void Cbuf_ExecuteText (int exec_when, const char *text)
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{
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switch (exec_when)
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{
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case EXEC_NOW:
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if (text && strlen(text) > 0) {
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Com_DPrintf(S_COLOR_YELLOW "EXEC_NOW %s\n", text);
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Cmd_ExecuteString (text);
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} else {
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Cbuf_Execute();
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Com_DPrintf(S_COLOR_YELLOW "EXEC_NOW %s\n", cmd_text.data);
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}
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break;
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case EXEC_INSERT:
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Cbuf_InsertText (text);
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break;
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case EXEC_APPEND:
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Cbuf_AddText (text);
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break;
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default:
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Com_Error (ERR_FATAL, "Cbuf_ExecuteText: bad exec_when");
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}
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}
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/*
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============
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Cbuf_Execute
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============
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*/
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void Cbuf_Execute (void)
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{
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int i;
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char *text;
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char line[MAX_CMD_LINE];
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int quotes;
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// This will keep // style comments all on one line by not breaking on
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// a semicolon. It will keep /* ... */ style comments all on one line by not
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// breaking it for semicolon or newline.
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qboolean in_star_comment = qfalse;
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qboolean in_slash_comment = qfalse;
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while (cmd_text.cursize)
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{
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if ( cmd_wait > 0 ) {
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// skip out while text still remains in buffer, leaving it
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// for next frame
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cmd_wait--;
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break;
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}
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// find a \n or ; line break or comment: // or /* */
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text = (char *)cmd_text.data;
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quotes = 0;
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for (i=0 ; i< cmd_text.cursize ; i++)
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{
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if (text[i] == '"')
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quotes++;
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if ( !(quotes&1)) {
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if (i < cmd_text.cursize - 1) {
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if (! in_star_comment && text[i] == '/' && text[i+1] == '/')
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in_slash_comment = qtrue;
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else if (! in_slash_comment && text[i] == '/' && text[i+1] == '*')
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in_star_comment = qtrue;
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else if (in_star_comment && text[i] == '*' && text[i+1] == '/') {
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in_star_comment = qfalse;
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// If we are in a star comment, then the part after it is valid
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// Note: This will cause it to NUL out the terminating '/'
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// but ExecuteString doesn't require it anyway.
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i++;
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break;
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}
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}
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if (! in_slash_comment && ! in_star_comment && text[i] == ';')
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break;
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}
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if (! in_star_comment && (text[i] == '\n' || text[i] == '\r')) {
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in_slash_comment = qfalse;
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break;
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}
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}
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if( i >= (MAX_CMD_LINE - 1)) {
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i = MAX_CMD_LINE - 1;
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}
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Com_Memcpy (line, text, i);
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line[i] = 0;
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// delete the text from the command buffer and move remaining commands down
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// this is necessary because commands (exec) can insert data at the
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// beginning of the text buffer
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if (i == cmd_text.cursize)
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cmd_text.cursize = 0;
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else
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{
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i++;
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cmd_text.cursize -= i;
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memmove (text, text+i, cmd_text.cursize);
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}
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// execute the command line
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Cmd_ExecuteString (line);
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}
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}
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/*
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==============================================================================
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SCRIPT COMMANDS
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==============================================================================
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*/
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/*
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===============
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Cmd_Exec_f
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===============
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*/
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void Cmd_Exec_f( void ) {
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qboolean quiet;
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union {
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char *c;
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void *v;
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} f;
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char filename[MAX_QPATH];
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quiet = !Q_stricmp(Cmd_Argv(0), "execq");
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if (Cmd_Argc () != 2) {
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Com_Printf ("exec%s <filename> : execute a script file%s\n",
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quiet ? "q" : "", quiet ? " without notification" : "");
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return;
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}
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Q_strncpyz( filename, Cmd_Argv(1), sizeof( filename ) );
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COM_DefaultExtension( filename, sizeof( filename ), ".cfg" );
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FS_ReadFile( filename, &f.v);
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if (!f.c) {
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Com_Printf ("couldn't exec %s\n", filename);
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return;
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}
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if (!quiet)
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Com_Printf ("execing %s\n", filename);
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Cbuf_InsertText (f.c);
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FS_FreeFile (f.v);
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}
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/*
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===============
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Cmd_Vstr_f
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Inserts the current value of a variable as command text
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===============
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*/
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void Cmd_Vstr_f( void ) {
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char *v;
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if (Cmd_Argc () != 2) {
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Com_Printf ("vstr <variablename> : execute a variable command\n");
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return;
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}
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v = Cvar_VariableString( Cmd_Argv( 1 ) );
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Cbuf_InsertText( va("%s\n", v ) );
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}
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/*
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===============
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Cmd_Echo_f
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Just prints the rest of the line to the console
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===============
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*/
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void Cmd_Echo_f (void)
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{
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Com_Printf ("%s\n", Cmd_Args());
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}
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/*
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=============================================================================
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COMMAND EXECUTION
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=============================================================================
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*/
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typedef struct cmd_function_s
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{
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struct cmd_function_s *next;
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char *name;
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xcommand_t function;
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completionFunc_t complete;
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} cmd_function_t;
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static int cmd_argc;
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static char *cmd_argv[MAX_STRING_TOKENS]; // points into cmd_tokenized
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static char cmd_tokenized[BIG_INFO_STRING+MAX_STRING_TOKENS]; // will have 0 bytes inserted
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static char cmd_cmd[BIG_INFO_STRING]; // the original command we received (no token processing)
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static cmd_function_t *cmd_functions; // possible commands to execute
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/*
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============
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Cmd_Argc
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============
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*/
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int Cmd_Argc( void ) {
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return cmd_argc;
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}
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/*
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============
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Cmd_Argv
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============
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*/
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char *Cmd_Argv( int arg ) {
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if ( (unsigned)arg >= cmd_argc ) {
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return "";
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}
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return cmd_argv[arg];
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}
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/*
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============
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Cmd_ArgvBuffer
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The interpreted versions use this because
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they can't have pointers returned to them
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============
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*/
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void Cmd_ArgvBuffer( int arg, char *buffer, int bufferLength ) {
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Q_strncpyz( buffer, Cmd_Argv( arg ), bufferLength );
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}
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/*
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============
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Cmd_Args
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Returns a single string containing argv(1) to argv(argc()-1)
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============
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*/
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char *Cmd_Args( void ) {
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static char cmd_args[MAX_STRING_CHARS];
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int i;
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cmd_args[0] = 0;
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for ( i = 1 ; i < cmd_argc ; i++ ) {
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strcat( cmd_args, cmd_argv[i] );
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if ( i != cmd_argc-1 ) {
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strcat( cmd_args, " " );
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}
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}
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return cmd_args;
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}
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/*
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============
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Cmd_Args
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Returns a single string containing argv(arg) to argv(argc()-1)
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============
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*/
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char *Cmd_ArgsFrom( int arg ) {
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static char cmd_args[BIG_INFO_STRING];
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int i;
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cmd_args[0] = 0;
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if (arg < 0)
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arg = 0;
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for ( i = arg ; i < cmd_argc ; i++ ) {
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strcat( cmd_args, cmd_argv[i] );
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if ( i != cmd_argc-1 ) {
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strcat( cmd_args, " " );
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}
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}
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return cmd_args;
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}
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/*
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============
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Cmd_ArgsBuffer
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The interpreted versions use this because
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they can't have pointers returned to them
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============
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*/
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void Cmd_ArgsBuffer( char *buffer, int bufferLength ) {
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Q_strncpyz( buffer, Cmd_Args(), bufferLength );
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}
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/*
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============
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Cmd_Cmd
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Retrieve the unmodified command string
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For rcon use when you want to transmit without altering quoting
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https://zerowing.idsoftware.com/bugzilla/show_bug.cgi?id=543
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============
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*/
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char *Cmd_Cmd(void)
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{
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return cmd_cmd;
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}
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/*
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Replace command separators with space to prevent interpretation
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This is a hack to protect buggy qvms
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https://bugzilla.icculus.org/show_bug.cgi?id=3593
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https://bugzilla.icculus.org/show_bug.cgi?id=4769
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*/
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void Cmd_Args_Sanitize(void)
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{
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int i;
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for(i = 1; i < cmd_argc; i++)
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{
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char *c = cmd_argv[i];
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if(strlen(c) > MAX_CVAR_VALUE_STRING - 1)
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c[MAX_CVAR_VALUE_STRING - 1] = '\0';
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while ((c = strpbrk(c, "\n\r;"))) {
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*c = ' ';
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++c;
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}
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}
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}
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/*
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============
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Cmd_TokenizeString
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Parses the given string into command line tokens.
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The text is copied to a seperate buffer and 0 characters
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are inserted in the apropriate place, The argv array
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will point into this temporary buffer.
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============
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*/
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// NOTE TTimo define that to track tokenization issues
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//#define TKN_DBG
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static void Cmd_TokenizeString2( const char *text_in, qboolean ignoreQuotes ) {
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const char *text;
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char *textOut;
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#ifdef TKN_DBG
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// FIXME TTimo blunt hook to try to find the tokenization of userinfo
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Com_DPrintf("Cmd_TokenizeString: %s\n", text_in);
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#endif
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// clear previous args
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cmd_argc = 0;
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if ( !text_in ) {
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return;
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}
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Q_strncpyz( cmd_cmd, text_in, sizeof(cmd_cmd) );
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text = text_in;
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textOut = cmd_tokenized;
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while ( 1 ) {
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if ( cmd_argc == MAX_STRING_TOKENS ) {
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return; // this is usually something malicious
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}
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while ( 1 ) {
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// skip whitespace
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while ( *text && *text <= ' ' ) {
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text++;
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}
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if ( !*text ) {
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return; // all tokens parsed
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}
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// skip // comments
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if ( text[0] == '/' && text[1] == '/' ) {
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return; // all tokens parsed
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}
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// skip /* */ comments
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if ( text[0] == '/' && text[1] =='*' ) {
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while ( *text && ( text[0] != '*' || text[1] != '/' ) ) {
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text++;
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}
|
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if ( !*text ) {
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return; // all tokens parsed
|
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}
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text += 2;
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} else {
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break; // we are ready to parse a token
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}
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}
|
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|
|
// handle quoted strings
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// NOTE TTimo this doesn't handle \" escaping
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|
if ( !ignoreQuotes && *text == '"' ) {
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cmd_argv[cmd_argc] = textOut;
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cmd_argc++;
|
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text++;
|
|
while ( *text && *text != '"' ) {
|
|
*textOut++ = *text++;
|
|
}
|
|
*textOut++ = 0;
|
|
if ( !*text ) {
|
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return; // all tokens parsed
|
|
}
|
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text++;
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continue;
|
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}
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|
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// regular token
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cmd_argv[cmd_argc] = textOut;
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cmd_argc++;
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|
|
// skip until whitespace, quote, or command
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|
while ( *text > ' ' ) {
|
|
if ( !ignoreQuotes && text[0] == '"' ) {
|
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break;
|
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}
|
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|
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if ( text[0] == '/' && text[1] == '/' ) {
|
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break;
|
|
}
|
|
|
|
// skip /* */ comments
|
|
if ( text[0] == '/' && text[1] =='*' ) {
|
|
break;
|
|
}
|
|
|
|
*textOut++ = *text++;
|
|
}
|
|
|
|
*textOut++ = 0;
|
|
|
|
if ( !*text ) {
|
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return; // all tokens parsed
|
|
}
|
|
}
|
|
|
|
}
|
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|
|
/*
|
|
============
|
|
Cmd_TokenizeString
|
|
============
|
|
*/
|
|
void Cmd_TokenizeString( const char *text_in ) {
|
|
Cmd_TokenizeString2( text_in, qfalse );
|
|
}
|
|
|
|
/*
|
|
============
|
|
Cmd_TokenizeStringIgnoreQuotes
|
|
============
|
|
*/
|
|
void Cmd_TokenizeStringIgnoreQuotes( const char *text_in ) {
|
|
Cmd_TokenizeString2( text_in, qtrue );
|
|
}
|
|
|
|
/*
|
|
============
|
|
Cmd_FindCommand
|
|
============
|
|
*/
|
|
cmd_function_t *Cmd_FindCommand( const char *cmd_name )
|
|
{
|
|
cmd_function_t *cmd;
|
|
for( cmd = cmd_functions; cmd; cmd = cmd->next )
|
|
if( !Q_stricmp( cmd_name, cmd->name ) )
|
|
return cmd;
|
|
return NULL;
|
|
}
|
|
|
|
/*
|
|
============
|
|
Cmd_AddCommand
|
|
============
|
|
*/
|
|
void Cmd_AddCommand( const char *cmd_name, xcommand_t function ) {
|
|
cmd_function_t *cmd;
|
|
|
|
// fail if the command already exists
|
|
if( Cmd_FindCommand( cmd_name ) )
|
|
{
|
|
// allow completion-only commands to be silently doubled
|
|
if( function != NULL )
|
|
Com_Printf( "Cmd_AddCommand: %s already defined\n", cmd_name );
|
|
return;
|
|
}
|
|
|
|
// use a small malloc to avoid zone fragmentation
|
|
cmd = S_Malloc (sizeof(cmd_function_t));
|
|
cmd->name = CopyString( cmd_name );
|
|
cmd->function = function;
|
|
cmd->complete = NULL;
|
|
cmd->next = cmd_functions;
|
|
cmd_functions = cmd;
|
|
}
|
|
|
|
/*
|
|
============
|
|
Cmd_SetCommandCompletionFunc
|
|
============
|
|
*/
|
|
void Cmd_SetCommandCompletionFunc( const char *command, completionFunc_t complete ) {
|
|
cmd_function_t *cmd;
|
|
|
|
for( cmd = cmd_functions; cmd; cmd = cmd->next ) {
|
|
if( !Q_stricmp( command, cmd->name ) ) {
|
|
cmd->complete = complete;
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
============
|
|
Cmd_RemoveCommand
|
|
============
|
|
*/
|
|
void Cmd_RemoveCommand( const char *cmd_name ) {
|
|
cmd_function_t *cmd, **back;
|
|
|
|
back = &cmd_functions;
|
|
while( 1 ) {
|
|
cmd = *back;
|
|
if ( !cmd ) {
|
|
// command wasn't active
|
|
return;
|
|
}
|
|
if ( !strcmp( cmd_name, cmd->name ) ) {
|
|
*back = cmd->next;
|
|
if (cmd->name) {
|
|
Z_Free(cmd->name);
|
|
}
|
|
Z_Free (cmd);
|
|
return;
|
|
}
|
|
back = &cmd->next;
|
|
}
|
|
}
|
|
|
|
/*
|
|
============
|
|
Cmd_RemoveCommandSafe
|
|
|
|
Only remove commands with no associated function
|
|
============
|
|
*/
|
|
void Cmd_RemoveCommandSafe( const char *cmd_name )
|
|
{
|
|
cmd_function_t *cmd = Cmd_FindCommand( cmd_name );
|
|
|
|
if( !cmd )
|
|
return;
|
|
if( cmd->function )
|
|
{
|
|
Com_Error( ERR_DROP, "Restricted source tried to remove "
|
|
"system command \"%s\"", cmd_name );
|
|
return;
|
|
}
|
|
|
|
Cmd_RemoveCommand( cmd_name );
|
|
}
|
|
|
|
/*
|
|
============
|
|
Cmd_CommandCompletion
|
|
============
|
|
*/
|
|
void Cmd_CommandCompletion( void(*callback)(const char *s) ) {
|
|
cmd_function_t *cmd;
|
|
|
|
for (cmd=cmd_functions ; cmd ; cmd=cmd->next) {
|
|
callback( cmd->name );
|
|
}
|
|
}
|
|
|
|
/*
|
|
============
|
|
Cmd_CompleteArgument
|
|
============
|
|
*/
|
|
void Cmd_CompleteArgument( const char *command, char *args, int argNum ) {
|
|
cmd_function_t *cmd;
|
|
|
|
for( cmd = cmd_functions; cmd; cmd = cmd->next ) {
|
|
if( !Q_stricmp( command, cmd->name ) && cmd->complete ) {
|
|
cmd->complete( args, argNum );
|
|
}
|
|
}
|
|
}
|
|
|
|
|
|
/*
|
|
============
|
|
Cmd_ExecuteString
|
|
|
|
A complete command line has been parsed, so try to execute it
|
|
============
|
|
*/
|
|
void Cmd_ExecuteString( const char *text ) {
|
|
cmd_function_t *cmd, **prev;
|
|
|
|
// execute the command line
|
|
Cmd_TokenizeString( text );
|
|
if ( !Cmd_Argc() ) {
|
|
return; // no tokens
|
|
}
|
|
|
|
// check registered command functions
|
|
for ( prev = &cmd_functions ; *prev ; prev = &cmd->next ) {
|
|
cmd = *prev;
|
|
if ( !Q_stricmp( cmd_argv[0],cmd->name ) ) {
|
|
// rearrange the links so that the command will be
|
|
// near the head of the list next time it is used
|
|
*prev = cmd->next;
|
|
cmd->next = cmd_functions;
|
|
cmd_functions = cmd;
|
|
|
|
// perform the action
|
|
if ( !cmd->function ) {
|
|
// let the cgame or game handle it
|
|
break;
|
|
} else {
|
|
cmd->function ();
|
|
}
|
|
return;
|
|
}
|
|
}
|
|
|
|
// check cvars
|
|
if ( Cvar_Command() ) {
|
|
return;
|
|
}
|
|
|
|
// check client game commands
|
|
if ( com_cl_running && com_cl_running->integer && CL_GameCommand() ) {
|
|
return;
|
|
}
|
|
|
|
// check server game commands
|
|
if ( com_sv_running && com_sv_running->integer && SV_GameCommand() ) {
|
|
return;
|
|
}
|
|
|
|
// check ui commands
|
|
if ( com_cl_running && com_cl_running->integer && UI_GameCommand() ) {
|
|
return;
|
|
}
|
|
|
|
// send it as a server command if we are connected
|
|
// this will usually result in a chat message
|
|
CL_ForwardCommandToServer ( text );
|
|
}
|
|
|
|
/*
|
|
============
|
|
Cmd_List_f
|
|
============
|
|
*/
|
|
void Cmd_List_f (void)
|
|
{
|
|
cmd_function_t *cmd;
|
|
int i;
|
|
char *match;
|
|
|
|
if ( Cmd_Argc() > 1 ) {
|
|
match = Cmd_Argv( 1 );
|
|
} else {
|
|
match = NULL;
|
|
}
|
|
|
|
i = 0;
|
|
for (cmd=cmd_functions ; cmd ; cmd=cmd->next) {
|
|
if (match && !Com_Filter(match, cmd->name, qfalse)) continue;
|
|
|
|
Com_Printf ("%s\n", cmd->name);
|
|
i++;
|
|
}
|
|
Com_Printf ("%i commands\n", i);
|
|
}
|
|
|
|
/*
|
|
==================
|
|
Cmd_CompleteCfgName
|
|
==================
|
|
*/
|
|
void Cmd_CompleteCfgName( char *args, int argNum ) {
|
|
if( argNum == 2 ) {
|
|
Field_CompleteFilename( "", "cfg", qfalse, qtrue );
|
|
}
|
|
}
|
|
|
|
/*
|
|
============
|
|
Cmd_Init
|
|
============
|
|
*/
|
|
void Cmd_Init (void) {
|
|
Cmd_AddCommand ("cmdlist",Cmd_List_f);
|
|
Cmd_AddCommand ("exec",Cmd_Exec_f);
|
|
Cmd_AddCommand ("execq",Cmd_Exec_f);
|
|
Cmd_SetCommandCompletionFunc( "exec", Cmd_CompleteCfgName );
|
|
Cmd_SetCommandCompletionFunc( "execq", Cmd_CompleteCfgName );
|
|
Cmd_AddCommand ("vstr",Cmd_Vstr_f);
|
|
Cmd_SetCommandCompletionFunc( "vstr", Cvar_CompleteCvarName );
|
|
Cmd_AddCommand ("echo",Cmd_Echo_f);
|
|
Cmd_AddCommand ("wait", Cmd_Wait_f);
|
|
}
|
|
|