hack.main.c revision 1.5 1 /* $NetBSD: hack.main.c,v 1.5 2000/03/02 18:19:06 kleink Exp $ */
2
3 /*
4 * Copyright (c) Stichting Mathematisch Centrum, Amsterdam, 1985.
5 */
6
7 #include <sys/cdefs.h>
8 #ifndef lint
9 __RCSID("$NetBSD: hack.main.c,v 1.5 2000/03/02 18:19:06 kleink Exp $");
10 #endif /* not lint */
11
12 #include <signal.h>
13 #include <stdlib.h>
14 #include <unistd.h>
15 #include <fcntl.h>
16 #include "hack.h"
17 #include "extern.h"
18
19 #ifdef QUEST
20 #define gamename "quest"
21 #else
22 #define gamename "hack"
23 #endif
24
25 int (*afternmv) __P((void));
26 int (*occupation) __P((void));
27 char *occtxt; /* defined when occupation != NULL */
28
29 int hackpid; /* current pid */
30 int locknum; /* max num of players */
31 #ifdef DEF_PAGER
32 char *catmore; /* default pager */
33 #endif
34 char SAVEF[PL_NSIZ + 11] = "save/"; /* save/99999player */
35 char *hname; /* name of the game (argv[0] of call) */
36 char obuf[BUFSIZ]; /* BUFSIZ is defined in stdio.h */
37
38 int main __P((int, char *[]));
39 static void chdirx __P((char *, boolean));
40
41 int
42 main(argc, argv)
43 int argc;
44 char *argv[];
45 {
46 int fd;
47 #ifdef CHDIR
48 char *dir;
49 #endif
50
51 hname = argv[0];
52 hackpid = getpid();
53
54 #ifdef CHDIR /* otherwise no chdir() */
55 /*
56 * See if we must change directory to the playground.
57 * (Perhaps hack runs suid and playground is inaccessible
58 * for the player.)
59 * The environment variable HACKDIR is overridden by a
60 * -d command line option (must be the first option given)
61 */
62
63 dir = getenv("HACKDIR");
64 if (argc > 1 && !strncmp(argv[1], "-d", 2)) {
65 argc--;
66 argv++;
67 dir = argv[0] + 2;
68 if (*dir == '=' || *dir == ':')
69 dir++;
70 if (!*dir && argc > 1) {
71 argc--;
72 argv++;
73 dir = argv[0];
74 }
75 if (!*dir)
76 error("Flag -d must be followed by a directory name.");
77 }
78 #endif
79
80 /*
81 * Who am i? Algorithm: 1. Use name as specified in HACKOPTIONS
82 * 2. Use $USER or $LOGNAME (if 1. fails)
83 * 3. Use getlogin() (if 2. fails)
84 * The resulting name is overridden by command line options.
85 * If everything fails, or if the resulting name is some generic
86 * account like "games", "play", "player", "hack" then eventually
87 * we'll ask him.
88 * Note that we trust him here; it is possible to play under
89 * somebody else's name.
90 */
91 {
92 char *s;
93
94 initoptions();
95 if (!*plname && (s = getenv("USER")))
96 (void) strncpy(plname, s, sizeof(plname) - 1);
97 if (!*plname && (s = getenv("LOGNAME")))
98 (void) strncpy(plname, s, sizeof(plname) - 1);
99 if (!*plname && (s = getlogin()))
100 (void) strncpy(plname, s, sizeof(plname) - 1);
101 }
102
103 /*
104 * Now we know the directory containing 'record' and
105 * may do a prscore().
106 */
107 if (argc > 1 && !strncmp(argv[1], "-s", 2)) {
108 #ifdef CHDIR
109 chdirx(dir, 0);
110 #endif
111 prscore(argc, argv);
112 exit(0);
113 }
114 /*
115 * It seems he really wants to play.
116 * Remember tty modes, to be restored on exit.
117 */
118 gettty();
119 setbuf(stdout, obuf);
120 setrandom();
121 startup();
122 cls();
123 u.uhp = 1; /* prevent RIP on early quits */
124 u.ux = FAR; /* prevent nscr() */
125 (void) signal(SIGHUP, hangup);
126
127 /*
128 * Find the creation date of this game,
129 * so as to avoid restoring outdated savefiles.
130 */
131 gethdate(hname);
132
133 /*
134 * We cannot do chdir earlier, otherwise gethdate will fail.
135 */
136 #ifdef CHDIR
137 chdirx(dir, 1);
138 #endif
139
140 /*
141 * Process options.
142 */
143 while (argc > 1 && argv[1][0] == '-') {
144 argv++;
145 argc--;
146 switch (argv[0][1]) {
147 #ifdef WIZARD
148 case 'D':
149 /* if(!strcmp(getlogin(), WIZARD)) */
150 wizard = TRUE;
151 /*
152 * else printf("Sorry.\n");
153 */
154 break;
155 #endif
156 #ifdef NEWS
157 case 'n':
158 flags.nonews = TRUE;
159 break;
160 #endif
161 case 'u':
162 if (argv[0][2])
163 (void) strncpy(plname, argv[0] + 2, sizeof(plname) - 1);
164 else if (argc > 1) {
165 argc--;
166 argv++;
167 (void) strncpy(plname, argv[0], sizeof(plname) - 1);
168 } else
169 printf("Player name expected after -u\n");
170 break;
171 default:
172 /* allow -T for Tourist, etc. */
173 (void) strncpy(pl_character, argv[0] + 1,
174 sizeof(pl_character) - 1);
175
176 /* printf("Unknown option: %s\n", *argv); */
177 }
178 }
179
180 if (argc > 1)
181 locknum = atoi(argv[1]);
182 #ifdef MAX_NR_OF_PLAYERS
183 if (!locknum || locknum > MAX_NR_OF_PLAYERS)
184 locknum = MAX_NR_OF_PLAYERS;
185 #endif
186 #ifdef DEF_PAGER
187 if (((catmore = getenv("HACKPAGER")) == NULL &&
188 (catmore = getenv("PAGER")) == NULL) ||
189 catmore[0] == '\0')
190 catmore = DEF_PAGER;
191 #endif
192 #ifdef MAIL
193 getmailstatus();
194 #endif
195 #ifdef WIZARD
196 if (wizard)
197 (void) strcpy(plname, "wizard");
198 else
199 #endif
200 if (!*plname || !strncmp(plname, "player", 4)
201 || !strncmp(plname, "games", 4))
202 askname();
203 plnamesuffix(); /* strip suffix from name; calls askname() */
204 /* again if suffix was whole name */
205 /* accepts any suffix */
206 #ifdef WIZARD
207 if (!wizard) {
208 #endif
209 /*
210 * check for multiple games under the same name
211 * (if !locknum) or check max nr of players (otherwise)
212 */
213 (void) signal(SIGQUIT, SIG_IGN);
214 (void) signal(SIGINT, SIG_IGN);
215 if (!locknum)
216 (void) strcpy(lock, plname);
217 getlock(); /* sets lock if locknum != 0 */
218 #ifdef WIZARD
219 } else {
220 char *sfoo;
221 (void) strcpy(lock, plname);
222 if ((sfoo = getenv("MAGIC")) != NULL)
223 while (*sfoo) {
224 switch (*sfoo++) {
225 case 'n':
226 (void) srandom(*sfoo++);
227 break;
228 }
229 }
230 if ((sfoo = getenv("GENOCIDED")) != NULL) {
231 if (*sfoo == '!') {
232 struct permonst *pm = mons;
233 char *gp = genocided;
234
235 while (pm < mons + CMNUM + 2) {
236 if (!strchr(sfoo, pm->mlet))
237 *gp++ = pm->mlet;
238 pm++;
239 }
240 *gp = 0;
241 } else
242 (void) strcpy(genocided, sfoo);
243 (void) strcpy(fut_geno, genocided);
244 }
245 }
246 #endif
247 setftty();
248 (void) sprintf(SAVEF, "save/%d%s", getuid(), plname);
249 regularize(SAVEF + 5); /* avoid . or / in name */
250 if ((fd = open(SAVEF, 0)) >= 0 &&
251 (uptodate(fd) || unlink(SAVEF) == 666)) {
252 (void) signal(SIGINT, done1);
253 pline("Restoring old save file...");
254 (void) fflush(stdout);
255 if (!dorecover(fd))
256 goto not_recovered;
257 pline("Hello %s, welcome to %s!", plname, gamename);
258 flags.move = 0;
259 } else {
260 not_recovered:
261 fobj = fcobj = invent = 0;
262 fmon = fallen_down = 0;
263 ftrap = 0;
264 fgold = 0;
265 flags.ident = 1;
266 init_objects();
267 u_init();
268
269 (void) signal(SIGINT, done1);
270 mklev();
271 u.ux = xupstair;
272 u.uy = yupstair;
273 (void) inshop();
274 setsee();
275 flags.botlx = 1;
276 makedog();
277 {
278 struct monst *mtmp;
279 if ((mtmp = m_at(u.ux, u.uy)) != NULL)
280 mnexto(mtmp); /* riv05!a3 */
281 }
282 seemons();
283 #ifdef NEWS
284 if (flags.nonews || !readnews())
285 /* after reading news we did docrt() already */
286 #endif
287 docrt();
288
289 /* give welcome message before pickup messages */
290 pline("Hello %s, welcome to %s!", plname, gamename);
291
292 pickup(1);
293 read_engr_at(u.ux, u.uy);
294 flags.move = 1;
295 }
296
297 flags.moonphase = phase_of_the_moon();
298 if (flags.moonphase == FULL_MOON) {
299 pline("You are lucky! Full moon tonight.");
300 u.uluck++;
301 } else if (flags.moonphase == NEW_MOON) {
302 pline("Be careful! New moon tonight.");
303 }
304 initrack();
305
306 for (;;) {
307 if (flags.move) { /* actual time passed */
308
309 settrack();
310
311 if (moves % 2 == 0 ||
312 (!(Fast & ~INTRINSIC) && (!Fast || rn2(3)))) {
313 movemon();
314 if (!rn2(70))
315 (void) makemon((struct permonst *) 0, 0, 0);
316 }
317 if (Glib)
318 glibr();
319 timeout();
320 ++moves;
321 if (flags.time)
322 flags.botl = 1;
323 if (u.uhp < 1) {
324 pline("You die...");
325 done("died");
326 }
327 if (u.uhp * 10 < u.uhpmax && moves - wailmsg > 50) {
328 wailmsg = moves;
329 if (u.uhp == 1)
330 pline("You hear the wailing of the Banshee...");
331 else
332 pline("You hear the howling of the CwnAnnwn...");
333 }
334 if (u.uhp < u.uhpmax) {
335 if (u.ulevel > 9) {
336 if (Regeneration || !(moves % 3)) {
337 flags.botl = 1;
338 u.uhp += rnd((int) u.ulevel - 9);
339 if (u.uhp > u.uhpmax)
340 u.uhp = u.uhpmax;
341 }
342 } else if (Regeneration ||
343 (!(moves % (22 - u.ulevel * 2)))) {
344 flags.botl = 1;
345 u.uhp++;
346 }
347 }
348 if (Teleportation && !rn2(85))
349 tele();
350 if (Searching && multi >= 0)
351 (void) dosearch();
352 gethungry();
353 invault();
354 amulet();
355 }
356 if (multi < 0) {
357 if (!++multi) {
358 pline(nomovemsg ? nomovemsg :
359 "You can move again.");
360 nomovemsg = 0;
361 if (afternmv)
362 (*afternmv) ();
363 afternmv = 0;
364 }
365 }
366 find_ac();
367 #ifndef QUEST
368 if (!flags.mv || Blind)
369 #endif
370 {
371 seeobjs();
372 seemons();
373 nscr();
374 }
375 if (flags.botl || flags.botlx)
376 bot();
377
378 flags.move = 1;
379
380 if (multi >= 0 && occupation) {
381 if (monster_nearby())
382 stop_occupation();
383 else if ((*occupation) () == 0)
384 occupation = 0;
385 continue;
386 }
387 if (multi > 0) {
388 #ifdef QUEST
389 if (flags.run >= 4)
390 finddir();
391 #endif
392 lookaround();
393 if (!multi) { /* lookaround may clear multi */
394 flags.move = 0;
395 continue;
396 }
397 if (flags.mv) {
398 if (multi < COLNO && !--multi)
399 flags.mv = flags.run = 0;
400 domove();
401 } else {
402 --multi;
403 rhack(save_cm);
404 }
405 } else if (multi == 0) {
406 #ifdef MAIL
407 ckmailstatus();
408 #endif
409 rhack((char *) 0);
410 }
411 if (multi && multi % 7 == 0)
412 (void) fflush(stdout);
413 }
414 }
415
416 void
417 glo(foo)
418 int foo;
419 {
420 /* construct the string xlock.n */
421 char *tf;
422
423 tf = lock;
424 while (*tf && *tf != '.')
425 tf++;
426 (void) sprintf(tf, ".%d", foo);
427 }
428
429 /*
430 * plname is filled either by an option (-u Player or -uPlayer) or
431 * explicitly (-w implies wizard) or by askname.
432 * It may still contain a suffix denoting pl_character.
433 */
434 void
435 askname()
436 {
437 int c, ct;
438 printf("\nWho are you? ");
439 (void) fflush(stdout);
440 ct = 0;
441 while ((c = getchar()) != '\n') {
442 if (c == EOF)
443 error("End of input\n");
444 /* some people get confused when their erase char is not ^H */
445 if (c == '\010') {
446 if (ct)
447 ct--;
448 continue;
449 }
450 if (c != '-')
451 if (c < 'A' || (c > 'Z' && c < 'a') || c > 'z')
452 c = '_';
453 if (ct < sizeof(plname) - 1)
454 plname[ct++] = c;
455 }
456 plname[ct] = 0;
457 if (ct == 0)
458 askname();
459 }
460
461 /* VARARGS1 */
462 void
463 #ifdef __STDC__
464 impossible(const char *s, ...)
465 #else
466 impossible(va_alist)
467 va_dcl
468 #endif
469 {
470 va_list ap;
471 #ifndef __STDC__
472 const char *s;
473
474 va_start(ap);
475 s = va_arg(ap, const char *);
476 #else
477 va_start(ap, s);
478 #endif
479 vpline(s, ap);
480 va_end(ap);
481 pline("Program in disorder - perhaps you'd better Quit.");
482 }
483
484 #ifdef CHDIR
485 static void
486 chdirx(dir, wr)
487 char *dir;
488 boolean wr;
489 {
490
491 #ifdef SECURE
492 if (dir /* User specified directory? */
493 #ifdef HACKDIR
494 && strcmp(dir, HACKDIR) /* and not the default? */
495 #endif
496 ) {
497 (void) setuid(getuid()); /* Ron Wessels */
498 (void) setgid(getgid());
499 }
500 #endif
501
502 #ifdef HACKDIR
503 if (dir == NULL)
504 dir = HACKDIR;
505 #endif
506
507 if (dir && chdir(dir) < 0) {
508 perror(dir);
509 error("Cannot chdir to %s.", dir);
510 }
511 /* warn the player if he cannot write the record file */
512 /* perhaps we should also test whether . is writable */
513 /* unfortunately the access systemcall is worthless */
514 if (wr) {
515 int fd;
516
517 if (dir == NULL)
518 dir = ".";
519 if ((fd = open(RECORD, 2)) < 0) {
520 printf("Warning: cannot write %s/%s", dir, RECORD);
521 getret();
522 } else
523 (void) close(fd);
524 }
525 }
526 #endif
527
528 void
529 stop_occupation()
530 {
531 if (occupation) {
532 pline("You stop %s.", occtxt);
533 occupation = 0;
534 }
535 }
536