OpenBSD-4.6/games/hack/hack.save.c
/* $OpenBSD: hack.save.c,v 1.8 2006/10/11 20:56:59 deraadt Exp $ */
/*
* Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica,
* Amsterdam
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* - Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of the Stichting Centrum voor Wiskunde en
* Informatica, 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 COPYRIGHT HOLDERS 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 COPYRIGHT OWNER
* 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.
*/
/*
* Copyright (c) 1982 Jay Fenlason <hack@gnu.org>
* All rights reserved.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED ``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 AUTHOR 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
static const char rcsid[] = "$OpenBSD: hack.save.c,v 1.8 2006/10/11 20:56:59 deraadt Exp $";
#endif /* not lint */
#include <stdio.h>
#include <stdlib.h>
#include <signal.h>
#include <unistd.h>
#include "hack.h"
extern char genocided[60]; /* defined in Decl.c */
extern char fut_geno[60]; /* idem */
extern char SAVEF[], nul[];
extern char pl_character[PL_CSIZ];
static int dosave0(int);
int
dosave()
{
if(dosave0(0)) {
settty("Be seeing you ...\n");
exit(0);
}
return(0);
}
void
hackhangup(int notused)
{
(void) dosave0(1);
exit(1);
}
/* returns 1 if save successful */
static int
dosave0(int hu)
{
int fd, ofd;
int tmp; /* not register ! */
(void) signal(SIGHUP, SIG_IGN);
(void) signal(SIGINT, SIG_IGN);
if((fd = creat(SAVEF, FMASK)) < 0) {
if(!hu) pline("Cannot open save file. (Continue or Quit)");
(void) unlink(SAVEF); /* ab@unido */
return(0);
}
if(flags.moonphase == FULL_MOON) /* ut-sally!fletcher */
u.uluck--; /* and unido!ab */
savelev(fd,dlevel);
saveobjchn(fd, invent);
saveobjchn(fd, fcobj);
savemonchn(fd, fallen_down);
tmp = getuid();
bwrite(fd, (char *) &tmp, sizeof tmp);
bwrite(fd, (char *) &flags, sizeof(struct flag));
bwrite(fd, (char *) &dlevel, sizeof dlevel);
bwrite(fd, (char *) &maxdlevel, sizeof maxdlevel);
bwrite(fd, (char *) &moves, sizeof moves);
bwrite(fd, (char *) &u, sizeof(struct you));
if(u.ustuck)
bwrite(fd, (char *) &(u.ustuck->m_id), sizeof u.ustuck->m_id);
bwrite(fd, (char *) pl_character, sizeof pl_character);
bwrite(fd, (char *) genocided, sizeof genocided);
bwrite(fd, (char *) fut_geno, sizeof fut_geno);
savenames(fd);
for(tmp = 1; tmp <= maxdlevel; tmp++) {
extern int hackpid;
extern boolean level_exists[];
if(tmp == dlevel || !level_exists[tmp]) continue;
glo(tmp);
if((ofd = open(lock, O_RDONLY)) < 0) {
if(!hu) pline("Error while saving: cannot read %s.", lock);
(void) close(fd);
(void) unlink(SAVEF);
if(!hu) done("tricked");
return(0);
}
getlev(ofd, hackpid, tmp);
(void) close(ofd);
bwrite(fd, (char *) &tmp, sizeof tmp); /* level number */
savelev(fd,tmp); /* actual level */
(void) unlink(lock);
}
(void) close(fd);
glo(dlevel);
(void) unlink(lock); /* get rid of current level --jgm */
glo(0);
(void) unlink(lock);
return(1);
}
int
dorecover(int fd)
{
int nfd;
int tmp; /* not a register ! */
unsigned mid; /* idem */
struct obj *otmp;
extern boolean restoring;
restoring = TRUE;
getlev(fd, 0, 0);
invent = restobjchn(fd);
for(otmp = invent; otmp; otmp = otmp->nobj)
if(otmp->owornmask)
setworn(otmp, otmp->owornmask);
fcobj = restobjchn(fd);
fallen_down = restmonchn(fd);
mread(fd, (char *) &tmp, sizeof tmp);
if(tmp != getuid()) { /* strange ... */
(void) close(fd);
(void) unlink(SAVEF);
puts("Saved game was not yours.");
restoring = FALSE;
return(0);
}
mread(fd, (char *) &flags, sizeof(struct flag));
mread(fd, (char *) &dlevel, sizeof dlevel);
mread(fd, (char *) &maxdlevel, sizeof maxdlevel);
mread(fd, (char *) &moves, sizeof moves);
mread(fd, (char *) &u, sizeof(struct you));
if(u.ustuck)
mread(fd, (char *) &mid, sizeof mid);
mread(fd, (char *) pl_character, sizeof pl_character);
mread(fd, (char *) genocided, sizeof genocided);
mread(fd, (char *) fut_geno, sizeof fut_geno);
restnames(fd);
while(1) {
if(read(fd, (char *) &tmp, sizeof tmp) != sizeof tmp)
break;
getlev(fd, 0, tmp);
glo(tmp);
if((nfd = creat(lock, FMASK)) < 0)
panic("Cannot open temp file %s!\n", lock);
savelev(nfd,tmp);
(void) close(nfd);
}
(void) lseek(fd, (off_t)0, SEEK_SET);
getlev(fd, 0, 0);
(void) close(fd);
(void) unlink(SAVEF);
if(Punished) {
for(otmp = fobj; otmp; otmp = otmp->nobj)
if(otmp->olet == CHAIN_SYM) goto chainfnd;
panic("Cannot find the iron chain?");
chainfnd:
uchain = otmp;
if(!uball){
for(otmp = fobj; otmp; otmp = otmp->nobj)
if(otmp->olet == BALL_SYM && otmp->spe)
goto ballfnd;
panic("Cannot find the iron ball?");
ballfnd:
uball = otmp;
}
}
if(u.ustuck) {
struct monst *mtmp;
for(mtmp = fmon; mtmp; mtmp = mtmp->nmon)
if(mtmp->m_id == mid) goto monfnd;
panic("Cannot find the monster ustuck.");
monfnd:
u.ustuck = mtmp;
}
#ifndef QUEST
setsee(); /* only to recompute seelx etc. - these weren't saved */
#endif /* QUEST */
docrt();
restoring = FALSE;
return(1);
}
struct obj *
restobjchn(int fd)
{
struct obj *otmp, *otmp2;
struct obj *first = 0;
int xl;
#ifdef lint
/* suppress "used before set" warning from lint */
otmp2 = 0;
#endif /* lint */
while(1) {
mread(fd, (char *) &xl, sizeof(xl));
if(xl == -1) break;
otmp = newobj(xl);
if(!first) first = otmp;
else otmp2->nobj = otmp;
mread(fd, (char *) otmp, (unsigned) xl + sizeof(struct obj));
if(!otmp->o_id) otmp->o_id = flags.ident++;
otmp2 = otmp;
}
if(first && otmp2->nobj){
impossible("Restobjchn: error reading objchn.");
otmp2->nobj = 0;
}
return(first);
}
struct monst *
restmonchn(int fd)
{
struct monst *mtmp, *mtmp2;
struct monst *first = 0;
int xl;
struct permonst *monbegin;
long differ;
mread(fd, (char *)&monbegin, sizeof(monbegin));
differ = (char *)(&mons[0]) - (char *)(monbegin);
#ifdef lint
/* suppress "used before set" warning from lint */
mtmp2 = 0;
#endif /* lint */
while(1) {
mread(fd, (char *) &xl, sizeof(xl));
if(xl == -1) break;
mtmp = newmonst(xl);
if(!first) first = mtmp;
else mtmp2->nmon = mtmp;
mread(fd, (char *) mtmp, (unsigned) xl + sizeof(struct monst));
if(!mtmp->m_id)
mtmp->m_id = flags.ident++;
mtmp->data = (struct permonst *)
((char *) mtmp->data + differ);
if(mtmp->minvent)
mtmp->minvent = restobjchn(fd);
mtmp2 = mtmp;
}
if(first && mtmp2->nmon){
impossible("Restmonchn: error reading monchn.");
mtmp2->nmon = 0;
}
return(first);
}