91 lines
2.2 KiB
C
91 lines
2.2 KiB
C
/*****************************************************************************
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*
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* $Id$
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* Purpose ...............: Create a cookie
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*
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*****************************************************************************
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* Copyright (C) 1997-2002
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*
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* Michiel Broek FIDO: 2:2801/16
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* Beekmansbos 10 Internet: mbroek@ux123.pttnwb.nl
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* 1971 BV IJmuiden
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* the Netherlands
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*
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* This file is part of MBSE BBS.
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*
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* This BBS is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2, or (at your option) any
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* later version.
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*
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* MBSE BBS is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with MBSE BBS; see the file COPYING. If not, write to the Free
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* Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
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*****************************************************************************/
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#include "../lib/libs.h"
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#include "../lib/structs.h"
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#include "../lib/users.h"
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#include "../lib/records.h"
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#include "../lib/common.h"
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#include "../lib/clcomm.h"
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#include "cookie.h"
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char *Cookie()
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{
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FILE *olf;
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char fname[81];
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int i, j, in, id;
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int recno = 0;
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long offset;
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int nrecno;
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static char temp[81];
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sprintf(fname, "%s/etc/oneline.data", getenv("MBSE_ROOT"));
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if ((olf = fopen(fname, "r")) == NULL) {
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WriteError("$Can't open %s", fname);
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return '\0';
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}
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fread(&olhdr, sizeof(olhdr), 1, olf);
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while (fread(&ol, olhdr.recsize, 1, olf) == 1) {
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recno++;
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}
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nrecno = recno;
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/*
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* Generate random record number
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*/
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while (TRUE) {
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in = nrecno;
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id = getpid();
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i = rand();
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j = i % id;
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if ((j <= in))
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break;
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}
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offset = olhdr.hdrsize + (j * olhdr.recsize);
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if (fseek(olf, offset, SEEK_SET) != 0) {
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WriteError("$Can't move pointer in %s", fname);
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return '\0';
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}
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fread(&ol, olhdr.recsize, 1, olf);
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fclose(olf);
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memset(&temp, 0, sizeof(temp));
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strcpy(temp, ol.Oneline);
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return temp;
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}
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