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 1.2 2003/06/17 04:25:23 dillon Exp $
  36  */
  37
  38 #include <sys/types.h>
  39 #include <sys/stat.h>
  40 #include <sys/param.h>                  /* MAXPATHLEN */
  41 #include <fcntl.h>
  42 #include <stdlib.h>
  43 #include <err.h>
  44 #include "externs.h"
  45
  46 void
  47 restore()
  48 {
  49         char *home;
  50         char home1[MAXPATHLEN];
  51         int n;
  52         int tmp;
  53         FILE *fp;
  54
  55         if ( (home = getenv("HOME")) != NULL)
  56           sprintf(home1, "%.*s/Bstar", MAXPATHLEN - 7, home);
  57         else return;
  58
  59         if ((fp = fopen(home1, "r")) == 0) {
  60                 perror(home1);
  61                 return;
  62         }
  63         fread(&WEIGHT, sizeof WEIGHT, 1, fp);
  64         fread(&CUMBER, sizeof CUMBER, 1, fp);
  65         fread(&gclock, sizeof gclock, 1, fp);
  66         fread(&tmp, sizeof tmp, 1, fp);
  67         location = tmp ? dayfile : nightfile;
  68         for (n = 1; n <= NUMOFROOMS; n++) {
  69                 fread(location[n].link, sizeof location[n].link, 1, fp);
  70                 fread(location[n].objects, sizeof location[n].objects, 1, fp);
  71         }
  72         fread(inven, sizeof inven, 1, fp);
  73         fread(wear, sizeof wear, 1, fp);
  74         fread(injuries, sizeof injuries, 1, fp);
  75         fread(notes, sizeof notes, 1, fp);
  76         fread(&direction, sizeof direction, 1, fp);
  77         fread(&position, sizeof position, 1, fp);
  78         fread(&gtime, sizeof gtime, 1, fp);
  79         fread(&fuel, sizeof fuel, 1, fp);
  80         fread(&torps, sizeof torps, 1, fp);
  81         fread(&carrying, sizeof carrying, 1, fp);
  82         fread(&encumber, sizeof encumber, 1, fp);
  83         fread(&rythmn, sizeof rythmn, 1, fp);
  84         fread(&followfight, sizeof followfight, 1, fp);
  85         fread(&ate, sizeof ate, 1, fp);
  86         fread(&snooze, sizeof snooze, 1, fp);
  87         fread(&meetgirl, sizeof meetgirl, 1, fp);
  88         fread(&followgod, sizeof followgod, 1, fp);
  89         fread(&godready, sizeof godready, 1, fp);
  90         fread(&bs_win, sizeof bs_win, 1, fp);
  91         fread(&wintime, sizeof wintime, 1, fp);
  92         fread(&matchlight, sizeof matchlight, 1, fp);
  93         fread(&matchcount, sizeof matchcount, 1, fp);
  94         fread(&loved, sizeof loved, 1, fp);
  95         fread(&pleasure, sizeof pleasure, 1, fp);
  96         fread(&power, sizeof power, 1, fp);
  97         /* We must check the last read, to catch truncated save files.  */
  98         if (fread(&ego, sizeof ego, 1, fp) < 1)
  99                 errx(1, "save file %s too short", home1);
 100         fclose(fp);
 101 }
 102
 103 void
 104 save()
 105 {
 106         struct stat sbuf;
 107         char *home;
 108         char home1[MAXPATHLEN];
 109         int n;
 110         int tmp, fd;
 111         FILE *fp;
 112
 113         home = getenv("HOME");
 114         if (home == 0)
 115                 return;
 116         sprintf(home1, "%.*s/Bstar", MAXPATHLEN - 7, home);
 117
 118         /* Try to open the file safely. */
 119         if (stat(home1, &sbuf) < 0) {
 120                 fd = open(home1, O_WRONLY|O_CREAT|O_EXCL, 0600);
 121                 if (fd < 0) {
 122                         fprintf(stderr, "Can't create %s\n", home1);
 123                         return;
 124                 }
 125         } else {
 126                 if ((sbuf.st_mode & S_IFLNK) == S_IFLNK) {
 127                         fprintf(stderr, "No symlinks!\n");
 128                         return;
 129                 }
 130
 131                 fd = open(home1, O_WRONLY|O_EXCL);
 132                 if (fd < 0) {
 133                         fprintf(stderr, "Can't open %s for writing\n", home1);
 134                         return;
 135                 }
 136         }
 137
 138         if ((fp = fdopen(fd, "w")) == 0) {
 139                 perror(home1);
 140                 return;
 141         }
 142
 143         printf("Saved in %s.\n", home1);
 144         fwrite(&WEIGHT, sizeof WEIGHT, 1, fp);
 145         fwrite(&CUMBER, sizeof CUMBER, 1, fp);
 146         fwrite(&gclock, sizeof gclock, 1, fp);
 147         tmp = location == dayfile;
 148         fwrite(&tmp, sizeof tmp, 1, fp);
 149         for (n = 1; n <= NUMOFROOMS; n++) {
 150                 fwrite(location[n].link, sizeof location[n].link, 1, fp);
 151                 fwrite(location[n].objects, sizeof location[n].objects, 1, fp);
 152         }
 153         fwrite(inven, sizeof inven, 1, fp);
 154         fwrite(wear, sizeof wear, 1, fp);
 155         fwrite(injuries, sizeof injuries, 1, fp);
 156         fwrite(notes, sizeof notes, 1, fp);
 157         fwrite(&direction, sizeof direction, 1, fp);
 158         fwrite(&position, sizeof position, 1, fp);
 159         fwrite(&gtime, sizeof gtime, 1, fp);
 160         fwrite(&fuel, sizeof fuel, 1, fp);
 161         fwrite(&torps, sizeof torps, 1, fp);
 162         fwrite(&carrying, sizeof carrying, 1, fp);
 163         fwrite(&encumber, sizeof encumber, 1, fp);
 164         fwrite(&rythmn, sizeof rythmn, 1, fp);
 165         fwrite(&followfight, sizeof followfight, 1, fp);
 166         fwrite(&ate, sizeof ate, 1, fp);
 167         fwrite(&snooze, sizeof snooze, 1, fp);
 168         fwrite(&meetgirl, sizeof meetgirl, 1, fp);
 169         fwrite(&followgod, sizeof followgod, 1, fp);
 170         fwrite(&godready, sizeof godready, 1, fp);
 171         fwrite(&bs_win, sizeof bs_win, 1, fp);
 172         fwrite(&wintime, sizeof wintime, 1, fp);
 173         fwrite(&matchlight, sizeof matchlight, 1, fp);
 174         fwrite(&matchcount, sizeof matchcount, 1, fp);
 175         fwrite(&loved, sizeof loved, 1, fp);
 176         fwrite(&pleasure, sizeof pleasure, 1, fp);
 177         fwrite(&power, sizeof power, 1, fp);
 178         fwrite(&ego, sizeof ego, 1, fp);
 179 }