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