1 /* $NetBSD: hack.save.c,v 1.14 2010/02/03 15:34:38 roy Exp $ */ 2 3 /* 4 * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica, 5 * Amsterdam 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are 10 * met: 11 * 12 * - Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * - Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * - Neither the name of the Stichting Centrum voor Wiskunde en 20 * Informatica, nor the names of its contributors may be used to endorse or 21 * promote products derived from this software without specific prior 22 * written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 25 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 27 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 28 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 31 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 32 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 33 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 34 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 /* 38 * Copyright (c) 1982 Jay Fenlason <hack@gnu.org> 39 * All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. The name of the author may not be used to endorse or promote products 50 * derived from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 53 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 54 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 55 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 56 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 57 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 58 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 59 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 60 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 61 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 */ 63 64 #include <sys/cdefs.h> 65 #ifndef lint 66 __RCSID("$NetBSD: hack.save.c,v 1.14 2010/02/03 15:34:38 roy Exp $"); 67 #endif /* not lint */ 68 69 #include <signal.h> 70 #include <stdlib.h> 71 #include <unistd.h> 72 #include <fcntl.h> 73 #include "hack.h" 74 #include "extern.h" 75 76 static int dosave0(int); 77 78 int 79 dosave(void) 80 { 81 if (dosave0(0)) { 82 settty("Be seeing you ...\n"); 83 exit(0); 84 } 85 return (0); 86 } 87 88 #ifndef NOSAVEONHANGUP 89 void 90 hang_up(int n __unused) 91 { 92 (void) dosave0(1); 93 exit(1); 94 } 95 #endif /* NOSAVEONHANGUP */ 96 97 /* returns 1 if save successful */ 98 static int 99 dosave0(int hu) 100 { 101 int fd, ofd; 102 int tmp; /* not ! */ 103 104 (void) signal(SIGHUP, SIG_IGN); 105 (void) signal(SIGINT, SIG_IGN); 106 if ((fd = creat(SAVEF, FMASK)) < 0) { 107 if (!hu) 108 pline("Cannot open save file. (Continue or Quit)"); 109 (void) unlink(SAVEF); /* ab@unido */ 110 return (0); 111 } 112 if (flags.moonphase == FULL_MOON) /* ut-sally!fletcher */ 113 u.uluck--; /* and unido!ab */ 114 savelev(fd, dlevel); 115 saveobjchn(fd, invent); 116 saveobjchn(fd, fcobj); 117 savemonchn(fd, fallen_down); 118 tmp = getuid(); 119 bwrite(fd, &tmp, sizeof tmp); 120 bwrite(fd, &flags, sizeof(struct flag)); 121 bwrite(fd, &dlevel, sizeof dlevel); 122 bwrite(fd, &maxdlevel, sizeof maxdlevel); 123 bwrite(fd, &moves, sizeof moves); 124 bwrite(fd, &u, sizeof(struct you)); 125 if (u.ustuck) 126 bwrite(fd, &(u.ustuck->m_id), sizeof u.ustuck->m_id); 127 bwrite(fd, pl_character, sizeof pl_character); 128 bwrite(fd, genocided, sizeof genocided); 129 bwrite(fd, fut_geno, sizeof fut_geno); 130 savenames(fd); 131 for (tmp = 1; tmp <= maxdlevel; tmp++) { 132 133 if (tmp == dlevel || !level_exists[tmp]) 134 continue; 135 glo(tmp); 136 if ((ofd = open(lock, O_RDONLY)) < 0) { 137 if (!hu) 138 pline("Error while saving: cannot read %s.", lock); 139 (void) close(fd); 140 (void) unlink(SAVEF); 141 if (!hu) 142 done("tricked"); 143 return (0); 144 } 145 getlev(ofd, hackpid, tmp); 146 (void) close(ofd); 147 bwrite(fd, &tmp, sizeof tmp); /* level number */ 148 savelev(fd, tmp); /* actual level */ 149 (void) unlink(lock); 150 } 151 (void) close(fd); 152 glo(dlevel); 153 (void) unlink(lock); /* get rid of current level --jgm */ 154 glo(0); 155 (void) unlink(lock); 156 return (1); 157 } 158 159 int 160 dorecover(int fd) 161 { 162 int nfd; 163 int tmp; /* not a ! */ 164 unsigned mid; /* idem */ 165 struct obj *otmp; 166 167 restoring = TRUE; 168 getlev(fd, 0, 0); 169 invent = restobjchn(fd); 170 for (otmp = invent; otmp; otmp = otmp->nobj) 171 if (otmp->owornmask) 172 setworn(otmp, otmp->owornmask); 173 fcobj = restobjchn(fd); 174 fallen_down = restmonchn(fd); 175 mread(fd, (char *) &tmp, sizeof tmp); 176 if (tmp != (int) getuid()) { /* strange ... */ 177 (void) close(fd); 178 (void) unlink(SAVEF); 179 puts("Saved game was not yours."); 180 restoring = FALSE; 181 return (0); 182 } 183 mread(fd, (char *) &flags, sizeof(struct flag)); 184 mread(fd, (char *) &dlevel, sizeof dlevel); 185 mread(fd, (char *) &maxdlevel, sizeof maxdlevel); 186 mread(fd, (char *) &moves, sizeof moves); 187 mread(fd, (char *) &u, sizeof(struct you)); 188 if (u.ustuck) 189 mread(fd, (char *) &mid, sizeof mid); 190 mread(fd, (char *) pl_character, sizeof pl_character); 191 mread(fd, (char *) genocided, sizeof genocided); 192 mread(fd, (char *) fut_geno, sizeof fut_geno); 193 restnames(fd); 194 while (1) { 195 if (read(fd, (char *) &tmp, sizeof tmp) != sizeof tmp) 196 break; 197 getlev(fd, 0, tmp); 198 glo(tmp); 199 if ((nfd = creat(lock, FMASK)) < 0) 200 panic("Cannot open temp file %s!\n", lock); 201 savelev(nfd, tmp); 202 (void) close(nfd); 203 } 204 (void) lseek(fd, (off_t) 0, SEEK_SET); 205 getlev(fd, 0, 0); 206 (void) close(fd); 207 (void) unlink(SAVEF); 208 if (Punished) { 209 for (otmp = fobj; otmp; otmp = otmp->nobj) 210 if (otmp->olet == CHAIN_SYM) 211 goto chainfnd; 212 panic("Cannot find the iron chain?"); 213 chainfnd: 214 uchain = otmp; 215 if (!uball) { 216 for (otmp = fobj; otmp; otmp = otmp->nobj) 217 if (otmp->olet == BALL_SYM && otmp->spe) 218 goto ballfnd; 219 panic("Cannot find the iron ball?"); 220 ballfnd: 221 uball = otmp; 222 } 223 } 224 if (u.ustuck) { 225 struct monst *mtmp; 226 227 for (mtmp = fmon; mtmp; mtmp = mtmp->nmon) 228 if (mtmp->m_id == mid) 229 goto monfnd; 230 panic("Cannot find the monster ustuck."); 231 monfnd: 232 u.ustuck = mtmp; 233 } 234 #ifndef QUEST 235 setsee(); /* only to recompute seelx etc. - these 236 * weren't saved */ 237 #endif /* QUEST */ 238 docrt(); 239 restoring = FALSE; 240 return (1); 241 } 242 243 struct obj * 244 restobjchn(int fd) 245 { 246 struct obj *otmp, *otmp2 = NULL; 247 struct obj *first = 0; 248 int xl; 249 while (1) { 250 mread(fd, (char *) &xl, sizeof(xl)); 251 if (xl == -1) 252 break; 253 otmp = newobj(xl); 254 if (!first) 255 first = otmp; 256 else 257 otmp2->nobj = otmp; 258 mread(fd, (char *) otmp, (unsigned) xl + sizeof(struct obj)); 259 if (!otmp->o_id) 260 otmp->o_id = flags.ident++; 261 otmp2 = otmp; 262 } 263 if (first && otmp2->nobj) { 264 impossible("Restobjchn: error reading objchn."); 265 otmp2->nobj = 0; 266 } 267 return (first); 268 } 269 270 struct monst * 271 restmonchn(int fd) 272 { 273 struct monst *mtmp, *mtmp2 = NULL; 274 struct monst *first = 0; 275 int xl; 276 277 struct permonst *monbegin; 278 long differ; 279 280 mread(fd, (char *) &monbegin, sizeof(monbegin)); 281 differ = (const char *) (&mons[0]) - (const char *) (monbegin); 282 283 #ifdef lint 284 /* suppress "used before set" warning from lint */ 285 mtmp2 = 0; 286 #endif /* lint */ 287 while (1) { 288 mread(fd, (char *) &xl, sizeof(xl)); 289 if (xl == -1) 290 break; 291 mtmp = newmonst(xl); 292 if (!first) 293 first = mtmp; 294 else 295 mtmp2->nmon = mtmp; 296 mread(fd, (char *) mtmp, (unsigned) xl + sizeof(struct monst)); 297 if (!mtmp->m_id) 298 mtmp->m_id = flags.ident++; 299 mtmp->data = (const struct permonst *) 300 ((const char *) mtmp->data + differ); 301 if (mtmp->minvent) 302 mtmp->minvent = restobjchn(fd); 303 mtmp2 = mtmp; 304 } 305 if (first && mtmp2->nmon) { 306 impossible("Restmonchn: error reading monchn."); 307 mtmp2->nmon = 0; 308 } 309 return (first); 310 } 311