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189 lines
5.9 KiB
C
189 lines
5.9 KiB
C
/*-
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* Copyright (c) 1991, 1993
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* The Regents of the University of California. All rights reserved.
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*
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* The game adventure was originally written in Fortran by Will Crowther
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* and Don Woods. It was later translated to C and enhanced by Jim
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* Gillogly. This code is derived from software contributed to Berkeley
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* by Jim Gillogly at The Rand Corporation.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#ifndef lint
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static char sccsid[] = "@(#)save.c 8.1 (Berkeley) 5/31/93";
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#endif /* not lint */
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include "hdr.h"
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struct savestruct
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{
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void *address;
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int width;
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};
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struct savestruct save_array[] =
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{
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&abbnum, sizeof(abbnum),
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&attack, sizeof(attack),
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&blklin, sizeof(blklin),
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&bonus, sizeof(bonus),
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&chloc, sizeof(chloc),
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&chloc2, sizeof(chloc2),
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&clock1, sizeof(clock1),
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&clock2, sizeof(clock2),
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&closed, sizeof(closed),
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&closng, sizeof(closng),
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&daltlc, sizeof(daltlc),
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&demo, sizeof(demo),
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&detail, sizeof(detail),
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&dflag, sizeof(dflag),
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&dkill, sizeof(dkill),
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&dtotal, sizeof(dtotal),
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&foobar, sizeof(foobar),
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&gaveup, sizeof(gaveup),
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&holdng, sizeof(holdng),
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&iwest, sizeof(iwest),
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&k, sizeof(k),
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&k2, sizeof(k2),
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&knfloc, sizeof(knfloc),
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&kq, sizeof(kq),
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&latncy, sizeof(latncy),
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&limit, sizeof(limit),
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&lmwarn, sizeof(lmwarn),
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&loc, sizeof(loc),
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&maxdie, sizeof(maxdie),
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&mxscor, sizeof(mxscor),
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&newloc, sizeof(newloc),
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&numdie, sizeof(numdie),
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&obj, sizeof(obj),
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&oldlc2, sizeof(oldlc2),
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&oldloc, sizeof(oldloc),
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&panic, sizeof(panic),
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&saved, sizeof(saved),
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&savet, sizeof(savet),
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&scorng, sizeof(scorng),
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&spk, sizeof(spk),
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&stick, sizeof(stick),
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&tally, sizeof(tally),
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&tally2, sizeof(tally2),
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&tkk, sizeof(tkk),
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&turns, sizeof(turns),
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&verb, sizeof(verb),
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&wd1, sizeof(wd1),
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&wd2, sizeof(wd2),
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&wzdark, sizeof(wzdark),
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&yea, sizeof(yea),
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atloc, sizeof(atloc),
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dloc, sizeof(dloc),
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dseen, sizeof(dseen),
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fixed, sizeof(fixed),
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hinted, sizeof(hinted),
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linkx, sizeof(linkx),
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odloc, sizeof(odloc),
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place, sizeof(place),
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prop, sizeof(prop),
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tk, sizeof(tk),
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NULL, 0
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};
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save(outfile) /* Two passes on data: first to get checksum, second */
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char *outfile; /* to output the data using checksum to start random #s */
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{
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FILE *out;
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struct savestruct *p;
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char *s;
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long sum;
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int i;
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crc_start();
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for (p = save_array; p->address != NULL; p++)
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sum = crc(p->address, p->width);
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srandom((int) sum);
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if ((out = fopen(outfile, "wb")) == NULL)
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{
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fprintf(stderr,
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"Hmm. The name \"%s\" appears to be magically blocked.\n",
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outfile);
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return 1;
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}
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fwrite(&sum, sizeof(sum), 1, out); /* Here's the random() key */
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for (p = save_array; p->address != NULL; p++)
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{
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for (s = p->address, i = 0; i < p->width; i++, s++)
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*s = (*s ^ random()) & 0xFF; /* Lightly encrypt */
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fwrite(p->address, p->width, 1, out);
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}
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fclose(out);
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return 0;
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}
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restore(infile)
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char *infile;
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{
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FILE *in;
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struct savestruct *p;
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char *s;
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long sum, cksum;
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int i;
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if ((in = fopen(infile, "rb")) == NULL)
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{
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fprintf(stderr,
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"Hmm. The file \"%s\" appears to be magically blocked.\n",
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infile);
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return 1;
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}
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fread(&sum, sizeof(sum), 1, in); /* Get the seed */
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srandom((int) sum);
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for (p = save_array; p->address != NULL; p++)
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{
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fread(p->address, p->width, 1, in);
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for (s = p->address, i = 0; i < p->width; i++, s++)
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*s = (*s ^ random()) & 0xFF; /* Lightly decrypt */
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}
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fclose(in);
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crc_start(); /* See if she cheated */
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for (p = save_array; p->address != NULL; p++)
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cksum = crc(p->address, p->width);
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if (sum != cksum) /* Tsk tsk */
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return 2; /* Altered the file */
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/* We successfully restored, so this really was a save file */
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/* Get rid of the file, but don't bother checking that we did */
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return 0;
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}
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