mirror of
https://git.code.sf.net/p/quake/newtree
synced 2024-11-22 20:21:38 +00:00
eae11661e4
strncat is not the maximum length of the destination string, but of the SOURCE string, thus strncat (dest, src, sizeof (dest)) is incorrect. It should be strncat (dest, src, sizeof (text) - strlen (dest)). Even then, no terminating nul will be written if src is too long, but at least it won't crash the stack:)
155 lines
3.3 KiB
C
155 lines
3.3 KiB
C
/*
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qargs.c
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command line argument processing routines
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Copyright (C) 1996-1997 Id Software, Inc.
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Copyright (C) 1999,2000 Nelson Rush.
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Copyright (C) 1999,2000 contributors of the QuakeForge project
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Please see the file "AUTHORS" for a list of contributors
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the 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 this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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$Id$
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*/
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#ifdef HAVE_CONFIG_H
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# include <config.h>
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#endif
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#include "string.h"
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#include "ctype.h"
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#include "stdlib.h"
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#include "qtypes.h"
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#include "crc.h"
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#include "sys.h"
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#include "cmd.h"
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#include "console.h"
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#include "client.h"
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#include "assert.h"
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#include "commdef.h"
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#include <string.h>
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usercmd_t nullcmd; // guarenteed to be zero
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static char **largv;
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static char *argvdummy = " ";
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static char *safeargvs[] =
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{"-stdvid", "-nolan", "-nosound", "-nocdaudio", "-nojoy", "-nomouse", "-dibonly"};
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#define NUM_SAFE_ARGVS (sizeof(safeargvs)/sizeof(safeargvs[0]))
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int com_argc;
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char **com_argv;
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char *com_cmdline;
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qboolean nouse = false; // 1999-10-29 +USE fix by Maddes
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/*
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================
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COM_CheckParm
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Returns the position (1 to argc-1) in the program's argument list
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where the given parameter apears, or 0 if not present
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================
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*/
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int COM_CheckParm (char *parm)
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{
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int i;
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for (i=1 ; i<com_argc ; i++)
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{
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if (!com_argv[i])
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continue; // NEXTSTEP sometimes clears appkit vars.
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if (!strcmp (parm,com_argv[i]))
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return i;
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}
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return 0;
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}
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/*
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================
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COM_InitArgv
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================
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*/
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void COM_InitArgv (int argc, char **argv)
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{
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qboolean safe;
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int i, len;
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safe = false;
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largv = (char**)calloc (1, (argc + NUM_SAFE_ARGVS + 1) * sizeof (char**));
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for (com_argc=0, len=0 ; com_argc < argc ; com_argc++)
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{
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largv[com_argc] = argv[com_argc];
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if ((argv[com_argc]) && !strcmp ("-safe", argv[com_argc]))
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safe = true;
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if (com_argc)
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len += strlen (argv[com_argc]) + 1;
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}
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com_cmdline = (char*)calloc (1, len+1); // need strlen(com_cmdline)+2
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com_cmdline[0] = 0;
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if (len) {
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for (i=1; i < argc; i++)
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{
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strncat (com_cmdline, argv[i], len - strlen (com_cmdline));
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assert(len - strlen(com_cmdline) > 0);
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strncat (com_cmdline, " ", len - strlen (com_cmdline));
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}
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com_cmdline[len - 1] = '\0';
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}
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if (safe)
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{
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// force all the safe-mode switches. Note that we reserved extra space in
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// case we need to add these, so we don't need an overflow check
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for (i=0 ; i<NUM_SAFE_ARGVS ; i++)
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{
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largv[com_argc] = safeargvs[i];
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com_argc++;
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}
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}
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largv[com_argc] = argvdummy;
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com_argv = largv;
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// 1999-10-29 +USE fix by Maddes start
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if (COM_CheckParm ("-nouse"))
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{
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nouse = true;
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}
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// 1999-10-29 +USE fix by Maddes end
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}
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/*
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================
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COM_AddParm
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Adds the given string at the end of the current argument list
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================
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*/
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void COM_AddParm (char *parm)
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{
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largv[com_argc++] = parm;
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}
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