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      1 /*	$NetBSD: save.c,v 1.12 2005/07/01 06:04:54 jmc Exp $	*/
      2 
      3 /*
      4  * Copyright (c) 1983, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * Redistribution and use in source and binary forms, with or without
      8  * modification, are permitted provided that the following conditions
      9  * are met:
     10  * 1. Redistributions of source code must retain the above copyright
     11  *    notice, this list of conditions and the following disclaimer.
     12  * 2. Redistributions in binary form must reproduce the above copyright
     13  *    notice, this list of conditions and the following disclaimer in the
     14  *    documentation and/or other materials provided with the distribution.
     15  * 3. Neither the name of the University nor the names of its contributors
     16  *    may be used to endorse or promote products derived from this software
     17  *    without specific prior written permission.
     18  *
     19  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     20  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     21  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     22  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     23  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     24  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     25  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     26  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     27  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     28  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     29  * SUCH DAMAGE.
     30  */
     31 
     32 #include <sys/cdefs.h>
     33 #ifndef lint
     34 #if 0
     35 static char sccsid[] = "@(#)save.c	8.2 (Berkeley) 4/28/95";
     36 #else
     37 __RCSID("$NetBSD: save.c,v 1.12 2005/07/01 06:04:54 jmc Exp $");
     38 #endif
     39 #endif				/* not lint */
     40 
     41 #include "extern.h"
     42 
     43 void
     44 restore(const char *filename)
     45 {
     46 	int     n;
     47 	int     tmp;
     48 	FILE   *fp;
     49 
     50 	if (filename == NULL)
     51 		exit(1); /* Error determining save file name.  */
     52 	if ((fp = fopen(filename, "r")) == 0) {
     53 		err(1, "fopen %s", filename);
     54 	}
     55 	fread(&WEIGHT, sizeof WEIGHT, 1, fp);
     56 	fread(&CUMBER, sizeof CUMBER, 1, fp);
     57 	fread(&ourclock, sizeof ourclock, 1, fp);
     58 	fread(&tmp, sizeof tmp, 1, fp);
     59 	location = tmp ? dayfile : nightfile;
     60 	for (n = 1; n <= NUMOFROOMS; n++) {
     61 		fread(location[n].link, sizeof location[n].link, 1, fp);
     62 		fread(location[n].objects, sizeof location[n].objects, 1, fp);
     63 	}
     64 	fread(inven, sizeof inven, 1, fp);
     65 	fread(wear, sizeof wear, 1, fp);
     66 	fread(injuries, sizeof injuries, 1, fp);
     67 	fread(notes, sizeof notes, 1, fp);
     68 	fread(&direction, sizeof direction, 1, fp);
     69 	fread(&position, sizeof position, 1, fp);
     70 	fread(&ourtime, sizeof ourtime, 1, fp);
     71 	fread(&fuel, sizeof fuel, 1, fp);
     72 	fread(&torps, sizeof torps, 1, fp);
     73 	fread(&carrying, sizeof carrying, 1, fp);
     74 	fread(&encumber, sizeof encumber, 1, fp);
     75 	fread(&rythmn, sizeof rythmn, 1, fp);
     76 	fread(&followfight, sizeof followfight, 1, fp);
     77 	fread(&ate, sizeof ate, 1, fp);
     78 	fread(&snooze, sizeof snooze, 1, fp);
     79 	fread(&meetgirl, sizeof meetgirl, 1, fp);
     80 	fread(&followgod, sizeof followgod, 1, fp);
     81 	fread(&godready, sizeof godready, 1, fp);
     82 	fread(&win, sizeof win, 1, fp);
     83 	fread(&wintime, sizeof wintime, 1, fp);
     84 	fread(&matchlight, sizeof matchlight, 1, fp);
     85 	fread(&matchcount, sizeof matchcount, 1, fp);
     86 	fread(&loved, sizeof loved, 1, fp);
     87 	fread(&pleasure, sizeof pleasure, 1, fp);
     88 	fread(&power, sizeof power, 1, fp);
     89 	/* We must check the last read, to catch truncated save files */
     90 	if (fread(&ego, sizeof ego, 1, fp) < 1)
     91 		errx(1, "save file %s too short", filename);
     92 	fclose(fp);
     93 }
     94 
     95 void
     96 save(const char *filename)
     97 {
     98 	int     n;
     99 	int     tmp;
    100 	FILE   *fp;
    101 
    102 	if (filename == NULL)
    103 		return; /* Error determining save file name.  */
    104 	if ((fp = fopen(filename, "w")) == NULL) {
    105 		warn("fopen %s", filename);
    106 		return;
    107 	}
    108 	printf("Saved in %s.\n", filename);
    109 	fwrite(&WEIGHT, sizeof WEIGHT, 1, fp);
    110 	fwrite(&CUMBER, sizeof CUMBER, 1, fp);
    111 	fwrite(&ourclock, sizeof ourclock, 1, fp);
    112 	tmp = location == dayfile;
    113 	fwrite(&tmp, sizeof tmp, 1, fp);
    114 	for (n = 1; n <= NUMOFROOMS; n++) {
    115 		fwrite(location[n].link, sizeof location[n].link, 1, fp);
    116 		fwrite(location[n].objects, sizeof location[n].objects, 1, fp);
    117 	}
    118 	fwrite(inven, sizeof inven, 1, fp);
    119 	fwrite(wear, sizeof wear, 1, fp);
    120 	fwrite(injuries, sizeof injuries, 1, fp);
    121 	fwrite(notes, sizeof notes, 1, fp);
    122 	fwrite(&direction, sizeof direction, 1, fp);
    123 	fwrite(&position, sizeof position, 1, fp);
    124 	fwrite(&ourtime, sizeof ourtime, 1, fp);
    125 	fwrite(&fuel, sizeof fuel, 1, fp);
    126 	fwrite(&torps, sizeof torps, 1, fp);
    127 	fwrite(&carrying, sizeof carrying, 1, fp);
    128 	fwrite(&encumber, sizeof encumber, 1, fp);
    129 	fwrite(&rythmn, sizeof rythmn, 1, fp);
    130 	fwrite(&followfight, sizeof followfight, 1, fp);
    131 	fwrite(&ate, sizeof ate, 1, fp);
    132 	fwrite(&snooze, sizeof snooze, 1, fp);
    133 	fwrite(&meetgirl, sizeof meetgirl, 1, fp);
    134 	fwrite(&followgod, sizeof followgod, 1, fp);
    135 	fwrite(&godready, sizeof godready, 1, fp);
    136 	fwrite(&win, sizeof win, 1, fp);
    137 	fwrite(&wintime, sizeof wintime, 1, fp);
    138 	fwrite(&matchlight, sizeof matchlight, 1, fp);
    139 	fwrite(&matchcount, sizeof matchcount, 1, fp);
    140 	fwrite(&loved, sizeof loved, 1, fp);
    141 	fwrite(&pleasure, sizeof pleasure, 1, fp);
    142 	fwrite(&power, sizeof power, 1, fp);
    143 	fwrite(&ego, sizeof ego, 1, fp);
    144 	fflush(fp);
    145 	if (ferror(fp))
    146 		warn("fwrite %s", filename);
    147 	fclose(fp);
    148 }
    149 
    150 /*
    151  * Given a save file name (possibly from fgetln, so without terminating NUL),
    152  * determine the name of the file to be saved to by adding the HOME
    153  * directory if the name does not contain a slash.  Name will be allocated
    154  * with malloc(3).
    155  */
    156 char *
    157 save_file_name(const char *filename, size_t len)
    158 {
    159 	char   *home;
    160 	char   *newname;
    161 	size_t	tmpl;
    162 
    163 	if (memchr(filename, '/', len)) {
    164 		newname = malloc(len + 1);
    165 		if (newname == NULL) {
    166 			warn(NULL);
    167 			return NULL;
    168 		}
    169 		memcpy(newname, filename, len);
    170 		newname[len] = 0;
    171 	} else {
    172 		home = getenv("HOME");
    173 		if (home != NULL) {
    174 			tmpl = strlen(home);
    175 			newname = malloc(tmpl + len + 2);
    176 			if (newname == NULL) {
    177 				warn(NULL);
    178 				return NULL;
    179 			}
    180 			memcpy(newname, home, tmpl);
    181 			newname[tmpl] = '/';
    182 			memcpy(newname + tmpl + 1, filename, len);
    183 			newname[tmpl + len + 1] = 0;
    184 		} else {
    185 			newname = malloc(len + 1);
    186 			if (newname == NULL) {
    187 				warn(NULL);
    188 				return NULL;
    189 			}
    190 			memcpy(newname, filename, len);
    191 			newname[len] = 0;
    192 		}
    193 	}
    194 	return newname;
    195 }
    196