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