1 /*-
2 * Copyright (c) 1988, 1993
3 * The Regents of the University of California. All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * Timothy C. Stoehr.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
30 * SUCH DAMAGE.
31 *
32 * @(#)save.c 8.1 (Berkeley) 5/31/93
33 * $FreeBSD: src/games/rogue/save.c,v 1.6 1999/11/30 03:49:27 billf Exp $
34 */
35
36 /*
37 * save.c
38 *
39 * This source herein may be modified and/or distributed by anybody who
40 * so desires, with the following restrictions:
41 * 1.) No portion of this notice shall be removed.
42 * 2.) Credit shall not be taken for the creation of this source.
43 * 3.) This code is not to be traded, sold, or used for personal
44 * gain or profit.
45 *
46 */
47
48 #include <stdio.h>
49 #include <unistd.h>
50 #include "rogue.h"
51
52 static boolean has_been_touched(const struct rogue_time *,
53 const struct rogue_time *);
54 static void del_save_file(void);
55 static void r_read(FILE *, char *, int);
56 static void r_write(FILE *, const char *, int);
57 static void read_pack(object *, FILE *, boolean);
58 static void read_string(char *, FILE *, size_t);
59 static void rw_dungeon(FILE *, boolean);
60 static void rw_id(struct id *, FILE *, int, boolean);
61 static void rw_rooms(FILE *, boolean);
62 static void write_pack(const object *, FILE *);
63 static void write_string(char *, FILE *);
64
65 static short write_failed = 0;
66 static char save_name[80];
67
68 char *save_file = NULL;
69
70 void
save_game(void)71 save_game(void)
72 {
73 char fname[64];
74
75 if (!get_input_line("file name?", save_file, fname,
76 "game not saved", 0, 1)) {
77 return;
78 }
79 check_message();
80 message(fname, 0);
81 save_into_file(fname);
82 }
83
84 void
save_into_file(const char * sfile)85 save_into_file(const char *sfile)
86 {
87 FILE *fp;
88 int file_id;
89 char *name_buffer;
90 size_t len;
91 char *hptr;
92 struct rogue_time rt_buf;
93
94 if (sfile[0] == '~') {
95 if ((hptr = md_getenv("HOME")) != NULL) {
96 len = strlen(hptr) + strlen(sfile);
97 name_buffer = md_malloc(len);
98 if (name_buffer == NULL) {
99 message("out of memory for save file name", 0);
100 sfile = error_file;
101 } else {
102 strcpy(name_buffer, hptr);
103 strcat(name_buffer, sfile+1);
104 sfile = name_buffer;
105 }
106
107 }
108 }
109 /* revoke */
110 setgid(getgid());
111 if ( ((fp = fopen(sfile, "w")) == NULL) ||
112 ((file_id = md_get_file_id(sfile)) == -1)) {
113 message("problem accessing the save file", 0);
114 return;
115 }
116 md_ignore_signals();
117 write_failed = 0;
118 xxx(1);
119 r_write(fp, (char *) &detect_monster, sizeof(detect_monster));
120 r_write(fp, (char *) &cur_level, sizeof(cur_level));
121 r_write(fp, (char *) &max_level, sizeof(max_level));
122 write_string(hunger_str, fp);
123 write_string(login_name, fp);
124 r_write(fp, (char *) &party_room, sizeof(party_room));
125 write_pack(&level_monsters, fp);
126 write_pack(&level_objects, fp);
127 r_write(fp, (char *) &file_id, sizeof(file_id));
128 rw_dungeon(fp, 1);
129 r_write(fp, (char *) &foods, sizeof(foods));
130 r_write(fp, (char *) &rogue, sizeof(fighter));
131 write_pack(&rogue.pack, fp);
132 rw_id(id_potions, fp, POTIONS, 1);
133 rw_id(id_scrolls, fp, SCROLS, 1);
134 rw_id(id_wands, fp, WANDS, 1);
135 rw_id(id_rings, fp, RINGS, 1);
136 r_write(fp, (char *) traps, (MAX_TRAPS * sizeof(trap)));
137 r_write(fp, (char *) is_wood, (WANDS * sizeof(boolean)));
138 r_write(fp, (char *) &cur_room, sizeof(cur_room));
139 rw_rooms(fp, 1);
140 r_write(fp, (char *) &being_held, sizeof(being_held));
141 r_write(fp, (char *) &bear_trap, sizeof(bear_trap));
142 r_write(fp, (char *) &halluc, sizeof(halluc));
143 r_write(fp, (char *) &blind, sizeof(blind));
144 r_write(fp, (char *) &confused, sizeof(confused));
145 r_write(fp, (char *) &levitate, sizeof(levitate));
146 r_write(fp, (char *) &haste_self, sizeof(haste_self));
147 r_write(fp, (char *) &see_invisible, sizeof(see_invisible));
148 r_write(fp, (char *) &detect_monster, sizeof(detect_monster));
149 r_write(fp, (char *) &wizard, sizeof(wizard));
150 r_write(fp, (char *) &score_only, sizeof(score_only));
151 r_write(fp, (char *) &m_moves, sizeof(m_moves));
152 md_gct(&rt_buf);
153 rt_buf.second += 10; /* allow for some processing time */
154 r_write(fp, (char *) &rt_buf, sizeof(rt_buf));
155 fclose(fp);
156
157 if (write_failed) {
158 md_df(sfile); /* delete file */
159 } else {
160 if (strcmp(sfile, save_name) == 0)
161 save_name[0] = 0;
162 clean_up("");
163 }
164 }
165
166 static void
del_save_file(void)167 del_save_file(void)
168 {
169 if (!save_name[0])
170 return;
171 /* revoke */
172 setgid(getgid());
173 md_df(save_name);
174 }
175
176 void
restore(const char * fname)177 restore(const char *fname)
178 {
179 FILE *fp = NULL;
180 struct rogue_time saved_time, mod_time;
181 char buf[4];
182 char tbuf[40];
183 int new_file_id, saved_file_id;
184
185 if ( ((new_file_id = md_get_file_id(fname)) == -1) ||
186 ((fp = fopen(fname, "r")) == NULL)) {
187 clean_up("cannot open file");
188 }
189 if (md_link_count(fname) > 1) {
190 clean_up("file has link");
191 }
192 xxx(1);
193 r_read(fp, (char *) &detect_monster, sizeof(detect_monster));
194 r_read(fp, (char *) &cur_level, sizeof(cur_level));
195 r_read(fp, (char *) &max_level, sizeof(max_level));
196 read_string(hunger_str, fp, sizeof hunger_str);
197
198 strlcpy(tbuf, login_name, sizeof tbuf);
199 read_string(login_name, fp, sizeof login_name);
200 if (strcmp(tbuf, login_name)) {
201 clean_up("you're not the original player");
202 }
203
204 r_read(fp, (char *) &party_room, sizeof(party_room));
205 read_pack(&level_monsters, fp, 0);
206 read_pack(&level_objects, fp, 0);
207 r_read(fp, (char *) &saved_file_id, sizeof(saved_file_id));
208 if (new_file_id != saved_file_id) {
209 clean_up("sorry, saved game is not in the same file");
210 }
211 rw_dungeon(fp, 0);
212 r_read(fp, (char *) &foods, sizeof(foods));
213 r_read(fp, (char *) &rogue, sizeof(fighter));
214 read_pack(&rogue.pack, fp, 1);
215 rw_id(id_potions, fp, POTIONS, 0);
216 rw_id(id_scrolls, fp, SCROLS, 0);
217 rw_id(id_wands, fp, WANDS, 0);
218 rw_id(id_rings, fp, RINGS, 0);
219 r_read(fp, (char *) traps, (MAX_TRAPS * sizeof(trap)));
220 r_read(fp, (char *) is_wood, (WANDS * sizeof(boolean)));
221 r_read(fp, (char *) &cur_room, sizeof(cur_room));
222 rw_rooms(fp, 0);
223 r_read(fp, (char *) &being_held, sizeof(being_held));
224 r_read(fp, (char *) &bear_trap, sizeof(bear_trap));
225 r_read(fp, (char *) &halluc, sizeof(halluc));
226 r_read(fp, (char *) &blind, sizeof(blind));
227 r_read(fp, (char *) &confused, sizeof(confused));
228 r_read(fp, (char *) &levitate, sizeof(levitate));
229 r_read(fp, (char *) &haste_self, sizeof(haste_self));
230 r_read(fp, (char *) &see_invisible, sizeof(see_invisible));
231 r_read(fp, (char *) &detect_monster, sizeof(detect_monster));
232 r_read(fp, (char *) &wizard, sizeof(wizard));
233 r_read(fp, (char *) &score_only, sizeof(score_only));
234 r_read(fp, (char *) &m_moves, sizeof(m_moves));
235 r_read(fp, (char *) &saved_time, sizeof(saved_time));
236
237 if (fread(buf, sizeof(char), 1, fp) > 0) {
238 clear();
239 clean_up("extra characters in file");
240 }
241
242 md_gfmt(fname, &mod_time); /* get file modification time */
243
244 if (has_been_touched(&saved_time, &mod_time)) {
245 clear();
246 clean_up("sorry, file has been touched");
247 }
248 if ((!wizard)) {
249 strcpy(save_name, fname);
250 atexit(del_save_file);
251 }
252 msg_cleared = 0;
253 ring_stats(0);
254 fclose(fp);
255 }
256
257 static void
write_pack(const object * pack,FILE * fp)258 write_pack(const object *pack, FILE *fp)
259 {
260 object t;
261
262 while ((pack = pack->next_object) != NULL) {
263 r_write(fp, (const char *) pack, sizeof(object));
264 }
265 t.ichar = t.what_is = 0;
266 r_write(fp, (const char *) &t, sizeof(object));
267 }
268
269 static void
read_pack(object * pack,FILE * fp,boolean is_rogue)270 read_pack(object *pack, FILE *fp, boolean is_rogue)
271 {
272 object read_obj, *new_obj;
273
274 for (;;) {
275 r_read(fp, (char *) &read_obj, sizeof(object));
276 if (read_obj.ichar == 0) {
277 pack->next_object = NULL;
278 break;
279 }
280 new_obj = alloc_object();
281 *new_obj = read_obj;
282 if (is_rogue) {
283 if (new_obj->in_use_flags & BEING_WORN) {
284 do_wear(new_obj);
285 } else if (new_obj->in_use_flags & BEING_WIELDED) {
286 do_wield(new_obj);
287 } else if (new_obj->in_use_flags & (ON_EITHER_HAND)) {
288 do_put_on(new_obj,
289 ((new_obj->in_use_flags & ON_LEFT_HAND) ? 1 : 0));
290 }
291 }
292 pack->next_object = new_obj;
293 pack = new_obj;
294 }
295 }
296
297 static void
rw_dungeon(FILE * fp,boolean rw)298 rw_dungeon(FILE *fp, boolean rw)
299 {
300 short i, j;
301 char buf[DCOLS];
302
303 for (i = 0; i < DROWS; i++) {
304 if (rw) {
305 r_write(fp, (char *) dungeon[i], (DCOLS * sizeof(dungeon[0][0])));
306 for (j = 0; j < DCOLS; j++) {
307 buf[j] = mvinch(i, j);
308 }
309 r_write(fp, buf, DCOLS);
310 } else {
311 r_read(fp, (char *) dungeon[i], (DCOLS * sizeof(dungeon[0][0])));
312 r_read(fp, buf, DCOLS);
313 for (j = 0; j < DCOLS; j++) {
314 mvaddch(i, j, buf[j]);
315 }
316 }
317 }
318 }
319
320 static void
rw_id(struct id id_table[],FILE * fp,int n,boolean wr)321 rw_id(struct id id_table[], FILE *fp, int n, boolean wr)
322 {
323 short i;
324
325 for (i = 0; i < n; i++) {
326 if (wr) {
327 r_write(fp, (const char *) &(id_table[i].value), sizeof(short));
328 r_write(fp, (const char *) &(id_table[i].id_status),
329 sizeof(unsigned short));
330 write_string(id_table[i].title, fp);
331 } else {
332 r_read(fp, (char *) &(id_table[i].value), sizeof(short));
333 r_read(fp, (char *) &(id_table[i].id_status),
334 sizeof(unsigned short));
335 read_string(id_table[i].title, fp, MAX_ID_TITLE_LEN);
336 }
337 }
338 }
339
340 static void
write_string(char * s,FILE * fp)341 write_string(char *s, FILE *fp)
342 {
343 short n;
344
345 n = strlen(s) + 1;
346 xxxx(s, n);
347 r_write(fp, (char *) &n, sizeof(short));
348 r_write(fp, s, n);
349 }
350
351 static void
read_string(char * s,FILE * fp,size_t len)352 read_string(char *s, FILE *fp, size_t len)
353 {
354 short n;
355
356 r_read(fp, (char *) &n, sizeof(short));
357 if (n < 0 || n > (short)len) {
358 clean_up("read_string: corrupt game file");
359 }
360 r_read(fp, s, n);
361 xxxx(s, n);
362 /* ensure null termination */
363 s[n-1] = 0;
364 }
365
366 static void
rw_rooms(FILE * fp,boolean rw)367 rw_rooms(FILE *fp, boolean rw)
368 {
369 short i;
370
371 for (i = 0; i < MAXROOMS; i++) {
372 rw ? r_write(fp, (char *) (rooms + i), sizeof(room)) :
373 r_read(fp, (char *) (rooms + i), sizeof(room));
374 }
375 }
376
377 static void
r_read(FILE * fp,char * buf,int n)378 r_read(FILE *fp, char *buf, int n)
379 {
380 if (fread(buf, sizeof(char), n, fp) != (unsigned)n) {
381 clean_up("read() failed, don't know why");
382 }
383 }
384
385 static void
r_write(FILE * fp,const char * buf,int n)386 r_write(FILE *fp, const char *buf, int n)
387 {
388 if (!write_failed) {
389 if (fwrite(buf, sizeof(char), n, fp) != (unsigned)n) {
390 message("write() failed, don't know why", 0);
391 sound_bell();
392 write_failed = 1;
393 }
394 }
395 }
396
397 static boolean
has_been_touched(const struct rogue_time * saved_time,const struct rogue_time * mod_time)398 has_been_touched(const struct rogue_time *saved_time,
399 const struct rogue_time *mod_time)
400 {
401 if (saved_time->year < mod_time->year) {
402 return(1);
403 } else if (saved_time->year > mod_time->year) {
404 return(0);
405 }
406 if (saved_time->month < mod_time->month) {
407 return(1);
408 } else if (saved_time->month > mod_time->month) {
409 return(0);
410 }
411 if (saved_time->day < mod_time->day) {
412 return(1);
413 } else if (saved_time->day > mod_time->day) {
414 return(0);
415 }
416 if (saved_time->hour < mod_time->hour) {
417 return(1);
418 } else if (saved_time->hour > mod_time->hour) {
419 return(0);
420 }
421 if (saved_time->minute < mod_time->minute) {
422 return(1);
423 } else if (saved_time->minute > mod_time->minute) {
424 return(0);
425 }
426 if (saved_time->second < mod_time->second) {
427 return(1);
428 }
429 return(0);
430 }
431