games/hack/hack.save.c

   1 /* Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985. */
   2 /* hack.save.c - version 1.0.3 */
   3 /* $FreeBSD: src/games/hack/hack.save.c,v 1.4 1999/11/16 10:26:37 marcel Exp $ */
   4 /* $DragonFly: src/games/hack/hack.save.c,v 1.4 2006/08/21 19:45:32 pavalos Exp $ */
   5
   6 #include "hack.h"
   7
   8 extern char SAVEF[], nul[];
   9
  10 static bool dosave0(int);
  11
  12 int
  13 dosave(void)
  14 {
  15         if (dosave0(0)) {
  16                 settty("Be seeing you ...\n");
  17                 exit(0);
  18         }
  19         return (0);
  20 }
  21
  22 #ifndef NOSAVEONHANGUP
  23 void
  24 hangup(int n __unused)
  25 {
  26         dosave0(1);
  27         exit(1);
  28 }
  29 #endif /* NOSAVEONHANGUP */
  30
  31 /* returns 1 if save successful */
  32 static bool
  33 dosave0(int hu)
  34 {
  35         int fd, ofd;
  36         int tmp;        /* not ! */
  37
  38         signal(SIGHUP, SIG_IGN);
  39         signal(SIGINT, SIG_IGN);
  40         if ((fd = creat(SAVEF, FMASK)) < 0) {
  41                 if (!hu)
  42                         pline("Cannot open save file. (Continue or Quit)");
  43                 unlink(SAVEF);  /* ab@unido */
  44                 return (0);
  45         }
  46         if (flags.moonphase == FULL_MOON)       /* ut-sally!fletcher */
  47                 u.uluck--;                      /* and unido!ab */
  48         savelev(fd, dlevel);
  49         saveobjchn(fd, invent);
  50         saveobjchn(fd, fcobj);
  51         savemonchn(fd, fallen_down);
  52         tmp = getuid();
  53         bwrite(fd, (char *)&tmp, sizeof(tmp));
  54         bwrite(fd, (char *)&flags, sizeof(struct flag));
  55         bwrite(fd, (char *)&dlevel, sizeof(dlevel));
  56         bwrite(fd, (char *)&maxdlevel, sizeof(maxdlevel));
  57         bwrite(fd, (char *)&moves, sizeof(moves));
  58         bwrite(fd, (char *)&u, sizeof(struct you));
  59         if (u.ustuck)
  60                 bwrite(fd, (char *)&(u.ustuck->m_id), sizeof(u.ustuck->m_id));
  61         bwrite(fd, (char *)pl_character, sizeof(pl_character));
  62         bwrite(fd, (char *)genocided, sizeof(genocided));
  63         bwrite(fd, (char *)fut_geno, sizeof(fut_geno));
  64         savenames(fd);
  65         for (tmp = 1; tmp <= maxdlevel; tmp++) {
  66                 if (tmp == dlevel || !level_exists[tmp])
  67                         continue;
  68                 glo(tmp);
  69                 if ((ofd = open(lock, O_RDONLY)) < 0) {
  70                         if (!hu)
  71                                 pline("Error while saving: cannot read %s.", lock);
  72                         close(fd);
  73                         unlink(SAVEF);
  74                         if (!hu)
  75                                 done("tricked");
  76                         return (0);
  77                 }
  78                 getlev(ofd, hackpid, tmp);
  79                 close(ofd);
  80                 bwrite(fd, (char *)&tmp, sizeof(tmp));  /* level number */
  81                 savelev(fd, tmp);                       /* actual level */
  82                 unlink(lock);
  83         }
  84         close(fd);
  85         glo(dlevel);
  86         unlink(lock);   /* get rid of current level --jgm */
  87         glo(0);
  88         unlink(lock);
  89         return (1);
  90 }
  91
  92 bool
  93 dorecover(int fd)
  94 {
  95         int nfd;
  96         int tmp;                /* not a ! */
  97         unsigned mid;           /* idem */
  98         struct obj *otmp;
  99
 100         restoring = TRUE;
 101         getlev(fd, 0, 0);
 102         invent = restobjchn(fd);
 103         for (otmp = invent; otmp; otmp = otmp->nobj)
 104                 if (otmp->owornmask)
 105                         setworn(otmp, otmp->owornmask);
 106         fcobj = restobjchn(fd);
 107         fallen_down = restmonchn(fd);
 108         mread(fd, (char *)&tmp, sizeof(tmp));
 109         if (tmp != (int)getuid()) {     /* strange ... */
 110                 close(fd);
 111                 unlink(SAVEF);
 112                 puts("Saved game was not yours.");
 113                 restoring = FALSE;
 114                 return (0);
 115         }
 116         mread(fd, (char *)&flags, sizeof(struct flag));
 117         mread(fd, (char *)&dlevel, sizeof(dlevel));
 118         mread(fd, (char *)&maxdlevel, sizeof(maxdlevel));
 119         mread(fd, (char *)&moves, sizeof(moves));
 120         mread(fd, (char *)&u, sizeof(struct you));
 121         if (u.ustuck)
 122                 mread(fd, (char *)&mid, sizeof(mid));
 123         mread(fd, (char *)pl_character, sizeof(pl_character));
 124         mread(fd, (char *)genocided, sizeof(genocided));
 125         mread(fd, (char *)fut_geno, sizeof(fut_geno));
 126         restnames(fd);
 127         for (;;) {
 128                 if (read(fd, (char *)&tmp, sizeof(tmp)) != sizeof(tmp))
 129                         break;
 130                 getlev(fd, 0, tmp);
 131                 glo(tmp);
 132                 if ((nfd = creat(lock, FMASK)) < 0)
 133                         panic("Cannot open temp file %s!\n", lock);
 134                 savelev(nfd, tmp);
 135                 close(nfd);
 136         }
 137         lseek(fd, (off_t)0, SEEK_SET);
 138         getlev(fd, 0, 0);
 139         close(fd);
 140         unlink(SAVEF);
 141         if (Punished) {
 142                 for (otmp = fobj; otmp; otmp = otmp->nobj)
 143                         if (otmp->olet == CHAIN_SYM)
 144                                 goto chainfnd;
 145                 panic("Cannot find the iron chain?");
 146 chainfnd:
 147                 uchain = otmp;
 148                 if (!uball) {
 149                         for (otmp = fobj; otmp; otmp = otmp->nobj)
 150                                 if (otmp->olet == BALL_SYM && otmp->spe)
 151                                         goto ballfnd;
 152                         panic("Cannot find the iron ball?");
 153 ballfnd:
 154                         uball = otmp;
 155                 }
 156         }
 157         if (u.ustuck) {
 158                 struct monst *mtmp;
 159
 160                 for (mtmp = fmon; mtmp; mtmp = mtmp->nmon)
 161                         if (mtmp->m_id == mid)
 162                                 goto monfnd;
 163                 panic("Cannot find the monster ustuck.");
 164 monfnd:
 165                 u.ustuck = mtmp;
 166         }
 167 #ifndef QUEST
 168         setsee();       /* only to recompute seelx etc. - these weren't saved */
 169 #endif /* QUEST */
 170         docrt();
 171         restoring = FALSE;
 172         return (1);
 173 }
 174
 175 struct obj *
 176 restobjchn(int fd)
 177 {
 178         struct obj *otmp, *otmp2;
 179         struct obj *first = 0;
 180         int xl;
 181
 182         /* suppress "used before set" warning from lint */
 183         otmp2 = 0;
 184         for (;;) {
 185                 mread(fd, (char *)&xl, sizeof(xl));
 186                 if (xl == -1)
 187                         break;
 188                 otmp = newobj(xl);
 189                 if (!first)
 190                         first = otmp;
 191                 else
 192                         otmp2->nobj = otmp;
 193                 mread(fd, (char *)otmp, (unsigned)xl + sizeof(struct obj));
 194                 if (!otmp->o_id) otmp->o_id = flags.ident++;
 195                 otmp2 = otmp;
 196         }
 197         if (first && otmp2->nobj) {
 198                 impossible("Restobjchn: error reading objchn.");
 199                 otmp2->nobj = 0;
 200         }
 201         return (first);
 202 }
 203
 204 struct monst *
 205 restmonchn(int fd)
 206 {
 207         struct monst *mtmp, *mtmp2;
 208         struct monst *first = 0;
 209         int xl;
 210         struct permonst *monbegin;
 211         long differ;
 212
 213         mread(fd, (char *)&monbegin, sizeof(monbegin));
 214         differ = (char *)(&mons[0]) - (char *)(monbegin);
 215
 216         /* suppress "used before set" warning from lint */
 217         mtmp2 = 0;
 218         for (;;) {
 219                 mread(fd, (char *)&xl, sizeof(xl));
 220                 if (xl == -1)
 221                         break;
 222                 mtmp = newmonst(xl);
 223                 if (!first)
 224                         first = mtmp;
 225                 else
 226                         mtmp2->nmon = mtmp;
 227                 mread(fd, (char *)mtmp, (unsigned)xl + sizeof(struct monst));
 228                 if (!mtmp->m_id)
 229                         mtmp->m_id = flags.ident++;
 230                 mtmp->data = (struct permonst *)
 231                     ((char *)mtmp->data + differ);
 232                 if (mtmp->minvent)
 233                         mtmp->minvent = restobjchn(fd);
 234                 mtmp2 = mtmp;
 235         }
 236         if (first && mtmp2->nmon) {
 237                 impossible("Restmonchn: error reading monchn.");
 238                 mtmp2->nmon = 0;
 239         }
 240         return (first);
 241 }