games/battlestar/save.c

   1 /*
   2  * Copyright (c) 1983, 1993
   3  *      The Regents of the University of California.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  * 1. Redistributions of source code must retain the above copyright
   9  *    notice, this list of conditions and the following disclaimer.
  10  * 2. Redistributions in binary form must reproduce the above copyright
  11  *    notice, this list of conditions and the following disclaimer in the
  12  *    documentation and/or other materials provided with the distribution.
  13  * 3. All advertising materials mentioning features or use of this software
  14  *    must display the following acknowledgement:
  15  *      This product includes software developed by the University of
  16  *      California, Berkeley and its contributors.
  17  * 4. Neither the name of the University nor the names of its contributors
  18  *    may be used to endorse or promote products derived from this software
  19  *    without specific prior written permission.
  20  *
  21  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  22  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  23  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  24  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  25  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  26  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  27  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  28  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  29  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  30  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  31  * SUCH DAMAGE.
  32  *
  33  * @(#)save.c   8.1 (Berkeley) 5/31/93
  34  * $FreeBSD: src/games/battlestar/save.c,v 1.8.2.1 2001/03/05 11:45:36 kris Exp $
  35  * $DragonFly: src/games/battlestar/save.c,v 1.3 2006/08/08 16:47:20 pavalos Exp $
  36  */
  37
  38 #include <sys/stat.h>
  39 #include <fcntl.h>
  40 #include <err.h>
  41 #include "externs.h"
  42
  43 void
  44 restore(void)
  45 {
  46         char *home;
  47         char home1[MAXPATHLEN];
  48         int n;
  49         int tmp;
  50         FILE *fp;
  51
  52         if ( (home = getenv("HOME")) != NULL)
  53           sprintf(home1, "%.*s/Bstar", MAXPATHLEN - 7, home);
  54         else return;
  55
  56         if ((fp = fopen(home1, "r")) == 0) {
  57                 perror(home1);
  58                 return;
  59         }
  60         fread(&WEIGHT, sizeof WEIGHT, 1, fp);
  61         fread(&CUMBER, sizeof CUMBER, 1, fp);
  62         fread(&gclock, sizeof gclock, 1, fp);
  63         fread(&tmp, sizeof tmp, 1, fp);
  64         location = tmp ? dayfile : nightfile;
  65         for (n = 1; n <= NUMOFROOMS; n++) {
  66                 fread(location[n].link, sizeof location[n].link, 1, fp);
  67                 fread(location[n].objects, sizeof location[n].objects, 1, fp);
  68         }
  69         fread(inven, sizeof inven, 1, fp);
  70         fread(wear, sizeof wear, 1, fp);
  71         fread(injuries, sizeof injuries, 1, fp);
  72         fread(notes, sizeof notes, 1, fp);
  73         fread(&direction, sizeof direction, 1, fp);
  74         fread(&position, sizeof position, 1, fp);
  75         fread(&gtime, sizeof gtime, 1, fp);
  76         fread(&fuel, sizeof fuel, 1, fp);
  77         fread(&torps, sizeof torps, 1, fp);
  78         fread(&carrying, sizeof carrying, 1, fp);
  79         fread(&encumber, sizeof encumber, 1, fp);
  80         fread(&rythmn, sizeof rythmn, 1, fp);
  81         fread(&followfight, sizeof followfight, 1, fp);
  82         fread(&ate, sizeof ate, 1, fp);
  83         fread(&snooze, sizeof snooze, 1, fp);
  84         fread(&meetgirl, sizeof meetgirl, 1, fp);
  85         fread(&followgod, sizeof followgod, 1, fp);
  86         fread(&godready, sizeof godready, 1, fp);
  87         fread(&bs_win, sizeof bs_win, 1, fp);
  88         fread(&wintime, sizeof wintime, 1, fp);
  89         fread(&matchlight, sizeof matchlight, 1, fp);
  90         fread(&matchcount, sizeof matchcount, 1, fp);
  91         fread(&loved, sizeof loved, 1, fp);
  92         fread(&pleasure, sizeof pleasure, 1, fp);
  93         fread(&power, sizeof power, 1, fp);
  94         /* We must check the last read, to catch truncated save files.  */
  95         if (fread(&ego, sizeof ego, 1, fp) < 1)
  96                 errx(1, "save file %s too short", home1);
  97         fclose(fp);
  98 }
  99
 100 void
 101 save(void)
 102 {
 103         struct stat sbuf;
 104         char *home;
 105         char home1[MAXPATHLEN];
 106         int n;
 107         int tmp, fd;
 108         FILE *fp;
 109
 110         home = getenv("HOME");
 111         if (home == 0)
 112                 return;
 113         sprintf(home1, "%.*s/Bstar", MAXPATHLEN - 7, home);
 114
 115         /* Try to open the file safely. */
 116         if (stat(home1, &sbuf) < 0) {
 117                 fd = open(home1, O_WRONLY|O_CREAT|O_EXCL, 0600);
 118                 if (fd < 0) {
 119                         fprintf(stderr, "Can't create %s\n", home1);
 120                         return;
 121                 }
 122         } else {
 123                 if ((sbuf.st_mode & S_IFLNK) == S_IFLNK) {
 124                         fprintf(stderr, "No symlinks!\n");
 125                         return;
 126                 }
 127
 128                 fd = open(home1, O_WRONLY|O_EXCL);
 129                 if (fd < 0) {
 130                         fprintf(stderr, "Can't open %s for writing\n", home1);
 131                         return;
 132                 }
 133         }
 134
 135         if ((fp = fdopen(fd, "w")) == 0) {
 136                 perror(home1);
 137                 return;
 138         }
 139
 140         printf("Saved in %s.\n", home1);
 141         fwrite(&WEIGHT, sizeof WEIGHT, 1, fp);
 142         fwrite(&CUMBER, sizeof CUMBER, 1, fp);
 143         fwrite(&gclock, sizeof gclock, 1, fp);
 144         tmp = location == dayfile;
 145         fwrite(&tmp, sizeof tmp, 1, fp);
 146         for (n = 1; n <= NUMOFROOMS; n++) {
 147                 fwrite(location[n].link, sizeof location[n].link, 1, fp);
 148                 fwrite(location[n].objects, sizeof location[n].objects, 1, fp);
 149         }
 150         fwrite(inven, sizeof inven, 1, fp);
 151         fwrite(wear, sizeof wear, 1, fp);
 152         fwrite(injuries, sizeof injuries, 1, fp);
 153         fwrite(notes, sizeof notes, 1, fp);
 154         fwrite(&direction, sizeof direction, 1, fp);
 155         fwrite(&position, sizeof position, 1, fp);
 156         fwrite(&gtime, sizeof gtime, 1, fp);
 157         fwrite(&fuel, sizeof fuel, 1, fp);
 158         fwrite(&torps, sizeof torps, 1, fp);
 159         fwrite(&carrying, sizeof carrying, 1, fp);
 160         fwrite(&encumber, sizeof encumber, 1, fp);
 161         fwrite(&rythmn, sizeof rythmn, 1, fp);
 162         fwrite(&followfight, sizeof followfight, 1, fp);
 163         fwrite(&ate, sizeof ate, 1, fp);
 164         fwrite(&snooze, sizeof snooze, 1, fp);
 165         fwrite(&meetgirl, sizeof meetgirl, 1, fp);
 166         fwrite(&followgod, sizeof followgod, 1, fp);
 167         fwrite(&godready, sizeof godready, 1, fp);
 168         fwrite(&bs_win, sizeof bs_win, 1, fp);
 169         fwrite(&wintime, sizeof wintime, 1, fp);
 170         fwrite(&matchlight, sizeof matchlight, 1, fp);
 171         fwrite(&matchcount, sizeof matchcount, 1, fp);
 172         fwrite(&loved, sizeof loved, 1, fp);
 173         fwrite(&pleasure, sizeof pleasure, 1, fp);
 174         fwrite(&power, sizeof power, 1, fp);
 175         fwrite(&ego, sizeof ego, 1, fp);
 176 }