1 /* $NetBSD: hack.main.c,v 1.11 2009/06/07 18:30:39 dholland Exp $ */ 2 3 /* 4 * Copyright (c) 1985, Stichting Centrum voor Wiskunde en Informatica, 5 * Amsterdam 6 * All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions are 10 * met: 11 * 12 * - Redistributions of source code must retain the above copyright notice, 13 * this list of conditions and the following disclaimer. 14 * 15 * - Redistributions in binary form must reproduce the above copyright 16 * notice, this list of conditions and the following disclaimer in the 17 * documentation and/or other materials provided with the distribution. 18 * 19 * - Neither the name of the Stichting Centrum voor Wiskunde en 20 * Informatica, nor the names of its contributors may be used to endorse or 21 * promote products derived from this software without specific prior 22 * written permission. 23 * 24 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS 25 * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED 26 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A 27 * PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER 28 * OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 29 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 30 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR 31 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF 32 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING 33 * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 34 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 35 */ 36 37 /* 38 * Copyright (c) 1982 Jay Fenlason <hack@gnu.org> 39 * All rights reserved. 40 * 41 * Redistribution and use in source and binary forms, with or without 42 * modification, are permitted provided that the following conditions 43 * are met: 44 * 1. Redistributions of source code must retain the above copyright 45 * notice, this list of conditions and the following disclaimer. 46 * 2. Redistributions in binary form must reproduce the above copyright 47 * notice, this list of conditions and the following disclaimer in the 48 * documentation and/or other materials provided with the distribution. 49 * 3. The name of the author may not be used to endorse or promote products 50 * derived from this software without specific prior written permission. 51 * 52 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 53 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY 54 * AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL 55 * THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, 56 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, 57 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; 58 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, 59 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 60 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF 61 * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 62 */ 63 64 #include <sys/cdefs.h> 65 #ifndef lint 66 __RCSID("$NetBSD: hack.main.c,v 1.11 2009/06/07 18:30:39 dholland Exp $"); 67 #endif /* not lint */ 68 69 #include <signal.h> 70 #include <stdlib.h> 71 #include <unistd.h> 72 #include <fcntl.h> 73 #include "hack.h" 74 #include "extern.h" 75 76 #ifdef QUEST 77 #define gamename "quest" 78 #else 79 #define gamename "hack" 80 #endif 81 82 int (*afternmv)(void); 83 int (*occupation)(void); 84 const char *occtxt; /* defined when occupation != NULL */ 85 86 int hackpid; /* current pid */ 87 int locknum; /* max num of players */ 88 #ifdef DEF_PAGER 89 const char *catmore; /* default pager */ 90 #endif 91 char SAVEF[PL_NSIZ + 11] = "save/"; /* save/99999player */ 92 char *hname; /* name of the game (argv[0] of call) */ 93 char obuf[BUFSIZ]; /* BUFSIZ is defined in stdio.h */ 94 95 int main(int, char *[]); 96 static void chdirx(const char *, boolean); 97 98 int 99 main(int argc, char *argv[]) 100 { 101 int fd; 102 #ifdef CHDIR 103 char *dir; 104 #endif 105 106 /* Check for dirty tricks with closed fds 0, 1, 2 */ 107 fd = open("/dev/null", O_RDONLY); 108 if (fd < 3) 109 exit(1); 110 close(fd); 111 112 hname = argv[0]; 113 hackpid = getpid(); 114 115 #ifdef CHDIR /* otherwise no chdir() */ 116 /* 117 * See if we must change directory to the playground. 118 * (Perhaps hack runs suid and playground is inaccessible 119 * for the player.) 120 * The environment variable HACKDIR is overridden by a 121 * -d command line option (must be the first option given) 122 */ 123 124 dir = getenv("HACKDIR"); 125 if (argc > 1 && !strncmp(argv[1], "-d", 2)) { 126 argc--; 127 argv++; 128 dir = argv[0] + 2; 129 if (*dir == '=' || *dir == ':') 130 dir++; 131 if (!*dir && argc > 1) { 132 argc--; 133 argv++; 134 dir = argv[0]; 135 } 136 if (!*dir) 137 error("Flag -d must be followed by a directory name."); 138 } 139 #endif 140 141 /* 142 * Who am i? Algorithm: 1. Use name as specified in HACKOPTIONS 143 * 2. Use $USER or $LOGNAME (if 1. fails) 144 * 3. Use getlogin() (if 2. fails) 145 * The resulting name is overridden by command line options. 146 * If everything fails, or if the resulting name is some generic 147 * account like "games", "play", "player", "hack" then eventually 148 * we'll ask him. 149 * Note that we trust him here; it is possible to play under 150 * somebody else's name. 151 */ 152 { 153 char *s; 154 155 initoptions(); 156 if (!*plname && (s = getenv("USER"))) 157 (void) strncpy(plname, s, sizeof(plname) - 1); 158 if (!*plname && (s = getenv("LOGNAME"))) 159 (void) strncpy(plname, s, sizeof(plname) - 1); 160 if (!*plname && (s = getlogin())) 161 (void) strncpy(plname, s, sizeof(plname) - 1); 162 } 163 164 /* 165 * Now we know the directory containing 'record' and 166 * may do a prscore(). 167 */ 168 if (argc > 1 && !strncmp(argv[1], "-s", 2)) { 169 #ifdef CHDIR 170 chdirx(dir, 0); 171 #endif 172 prscore(argc, argv); 173 exit(0); 174 } 175 /* 176 * It seems he really wants to play. 177 * Remember tty modes, to be restored on exit. 178 */ 179 gettty(); 180 setbuf(stdout, obuf); 181 setrandom(); 182 startup(); 183 cls(); 184 u.uhp = 1; /* prevent RIP on early quits */ 185 u.ux = FAR; /* prevent nscr() */ 186 (void) signal(SIGHUP, hangup); 187 188 /* 189 * Find the creation date of this game, 190 * so as to avoid restoring outdated savefiles. 191 */ 192 gethdate(hname); 193 194 /* 195 * We cannot do chdir earlier, otherwise gethdate will fail. 196 */ 197 #ifdef CHDIR 198 chdirx(dir, 1); 199 #endif 200 201 /* 202 * Process options. 203 */ 204 while (argc > 1 && argv[1][0] == '-') { 205 argv++; 206 argc--; 207 switch (argv[0][1]) { 208 #ifdef WIZARD 209 case 'D': 210 /* if(!strcmp(getlogin(), WIZARD)) */ 211 wizard = TRUE; 212 /* 213 * else printf("Sorry.\n"); 214 */ 215 break; 216 #endif 217 #ifdef NEWS 218 case 'n': 219 flags.nonews = TRUE; 220 break; 221 #endif 222 case 'u': 223 if (argv[0][2]) 224 (void) strncpy(plname, argv[0] + 2, sizeof(plname) - 1); 225 else if (argc > 1) { 226 argc--; 227 argv++; 228 (void) strncpy(plname, argv[0], sizeof(plname) - 1); 229 } else 230 printf("Player name expected after -u\n"); 231 break; 232 default: 233 /* allow -T for Tourist, etc. */ 234 (void) strncpy(pl_character, argv[0] + 1, 235 sizeof(pl_character) - 1); 236 237 /* printf("Unknown option: %s\n", *argv); */ 238 } 239 } 240 241 if (argc > 1) 242 locknum = atoi(argv[1]); 243 #ifdef MAX_NR_OF_PLAYERS 244 if (!locknum || locknum > MAX_NR_OF_PLAYERS) 245 locknum = MAX_NR_OF_PLAYERS; 246 #endif 247 #ifdef DEF_PAGER 248 if (((catmore = getenv("HACKPAGER")) == NULL && 249 (catmore = getenv("PAGER")) == NULL) || 250 catmore[0] == '\0') 251 catmore = DEF_PAGER; 252 #endif 253 #ifdef MAIL 254 getmailstatus(); 255 #endif 256 #ifdef WIZARD 257 if (wizard) 258 (void) strcpy(plname, "wizard"); 259 else 260 #endif 261 if (!*plname || !strncmp(plname, "player", 4) 262 || !strncmp(plname, "games", 4)) 263 askname(); 264 plnamesuffix(); /* strip suffix from name; calls askname() */ 265 /* again if suffix was whole name */ 266 /* accepts any suffix */ 267 #ifdef WIZARD 268 if (!wizard) { 269 #endif 270 /* 271 * check for multiple games under the same name 272 * (if !locknum) or check max nr of players (otherwise) 273 */ 274 (void) signal(SIGQUIT, SIG_IGN); 275 (void) signal(SIGINT, SIG_IGN); 276 if (!locknum) 277 (void) strcpy(lock, plname); 278 getlock(); /* sets lock if locknum != 0 */ 279 #ifdef WIZARD 280 } else { 281 char *sfoo; 282 (void) strcpy(lock, plname); 283 if ((sfoo = getenv("MAGIC")) != NULL) 284 while (*sfoo) { 285 switch (*sfoo++) { 286 case 'n': 287 (void) srandom(*sfoo++); 288 break; 289 } 290 } 291 if ((sfoo = getenv("GENOCIDED")) != NULL) { 292 if (*sfoo == '!') { 293 const struct permonst *pm = mons; 294 char *gp = genocided; 295 296 while (pm < mons + CMNUM + 2) { 297 if (!strchr(sfoo, pm->mlet)) 298 *gp++ = pm->mlet; 299 pm++; 300 } 301 *gp = 0; 302 } else 303 (void) strcpy(genocided, sfoo); 304 (void) strcpy(fut_geno, genocided); 305 } 306 } 307 #endif 308 setftty(); 309 (void) sprintf(SAVEF, "save/%d%s", getuid(), plname); 310 regularize(SAVEF + 5); /* avoid . or / in name */ 311 if ((fd = open(SAVEF, O_RDONLY)) >= 0 && 312 (uptodate(fd) || unlink(SAVEF) == 666)) { 313 (void) signal(SIGINT, done1); 314 pline("Restoring old save file..."); 315 (void) fflush(stdout); 316 if (!dorecover(fd)) 317 goto not_recovered; 318 pline("Hello %s, welcome to %s!", plname, gamename); 319 flags.move = 0; 320 } else { 321 not_recovered: 322 fobj = fcobj = invent = 0; 323 fmon = fallen_down = 0; 324 ftrap = 0; 325 fgold = 0; 326 flags.ident = 1; 327 init_objects(); 328 u_init(); 329 330 (void) signal(SIGINT, done1); 331 mklev(); 332 u.ux = xupstair; 333 u.uy = yupstair; 334 (void) inshop(); 335 setsee(); 336 flags.botlx = 1; 337 makedog(); 338 { 339 struct monst *mtmp; 340 if ((mtmp = m_at(u.ux, u.uy)) != NULL) 341 mnexto(mtmp); /* riv05!a3 */ 342 } 343 seemons(); 344 #ifdef NEWS 345 if (flags.nonews || !readnews()) 346 /* after reading news we did docrt() already */ 347 #endif 348 docrt(); 349 350 /* give welcome message before pickup messages */ 351 pline("Hello %s, welcome to %s!", plname, gamename); 352 353 pickup(1); 354 read_engr_at(u.ux, u.uy); 355 flags.move = 1; 356 } 357 358 flags.moonphase = phase_of_the_moon(); 359 if (flags.moonphase == FULL_MOON) { 360 pline("You are lucky! Full moon tonight."); 361 u.uluck++; 362 } else if (flags.moonphase == NEW_MOON) { 363 pline("Be careful! New moon tonight."); 364 } 365 initrack(); 366 367 for (;;) { 368 if (flags.move) { /* actual time passed */ 369 370 settrack(); 371 372 if (moves % 2 == 0 || 373 (!(Fast & ~INTRINSIC) && (!Fast || rn2(3)))) { 374 movemon(); 375 if (!rn2(70)) 376 (void) makemon((struct permonst *) 0, 0, 0); 377 } 378 if (Glib) 379 glibr(); 380 timeout(); 381 ++moves; 382 if (flags.time) 383 flags.botl = 1; 384 if (u.uhp < 1) { 385 pline("You die..."); 386 done("died"); 387 } 388 if (u.uhp * 10 < u.uhpmax && moves - wailmsg > 50) { 389 wailmsg = moves; 390 if (u.uhp == 1) 391 pline("You hear the wailing of the Banshee..."); 392 else 393 pline("You hear the howling of the CwnAnnwn..."); 394 } 395 if (u.uhp < u.uhpmax) { 396 if (u.ulevel > 9) { 397 if (Regeneration || !(moves % 3)) { 398 flags.botl = 1; 399 u.uhp += rnd((int) u.ulevel - 9); 400 if (u.uhp > u.uhpmax) 401 u.uhp = u.uhpmax; 402 } 403 } else if (Regeneration || 404 (!(moves % (22 - u.ulevel * 2)))) { 405 flags.botl = 1; 406 u.uhp++; 407 } 408 } 409 if (Teleportation && !rn2(85)) 410 tele(); 411 if (Searching && multi >= 0) 412 (void) dosearch(); 413 gethungry(); 414 invault(); 415 amulet(); 416 } 417 if (multi < 0) { 418 if (!++multi) { 419 pline(nomovemsg ? nomovemsg : 420 "You can move again."); 421 nomovemsg = 0; 422 if (afternmv) 423 (*afternmv) (); 424 afternmv = 0; 425 } 426 } 427 find_ac(); 428 #ifndef QUEST 429 if (!flags.mv || Blind) 430 #endif 431 { 432 seeobjs(); 433 seemons(); 434 nscr(); 435 } 436 if (flags.botl || flags.botlx) 437 bot(); 438 439 flags.move = 1; 440 441 if (multi >= 0 && occupation) { 442 if (monster_nearby()) 443 stop_occupation(); 444 else if ((*occupation) () == 0) 445 occupation = 0; 446 continue; 447 } 448 if (multi > 0) { 449 #ifdef QUEST 450 if (flags.run >= 4) 451 finddir(); 452 #endif 453 lookaround(); 454 if (!multi) { /* lookaround may clear multi */ 455 flags.move = 0; 456 continue; 457 } 458 if (flags.mv) { 459 if (multi < COLNO && !--multi) 460 flags.mv = flags.run = 0; 461 domove(); 462 } else { 463 --multi; 464 rhack(save_cm); 465 } 466 } else if (multi == 0) { 467 #ifdef MAIL 468 ckmailstatus(); 469 #endif 470 rhack((char *) 0); 471 } 472 if (multi && multi % 7 == 0) 473 (void) fflush(stdout); 474 } 475 } 476 477 void 478 glo(int foo) 479 { 480 /* construct the string xlock.n */ 481 char *tf; 482 483 tf = lock; 484 while (*tf && *tf != '.') 485 tf++; 486 (void) sprintf(tf, ".%d", foo); 487 } 488 489 /* 490 * plname is filled either by an option (-u Player or -uPlayer) or 491 * explicitly (-w implies wizard) or by askname. 492 * It may still contain a suffix denoting pl_character. 493 */ 494 void 495 askname(void) 496 { 497 int c, ct; 498 printf("\nWho are you? "); 499 (void) fflush(stdout); 500 ct = 0; 501 while ((c = getchar()) != '\n') { 502 if (c == EOF) 503 error("End of input\n"); 504 /* some people get confused when their erase char is not ^H */ 505 if (c == '\010') { 506 if (ct) 507 ct--; 508 continue; 509 } 510 if (c != '-') 511 if (c < 'A' || (c > 'Z' && c < 'a') || c > 'z') 512 c = '_'; 513 if (ct < (int)sizeof(plname) - 1) 514 plname[ct++] = c; 515 } 516 plname[ct] = 0; 517 if (ct == 0) 518 askname(); 519 } 520 521 /* VARARGS1 */ 522 void 523 impossible(const char *s, ...) 524 { 525 va_list ap; 526 527 va_start(ap, s); 528 vpline(s, ap); 529 va_end(ap); 530 pline("Program in disorder - perhaps you'd better Quit."); 531 } 532 533 #ifdef CHDIR 534 static void 535 chdirx(const char *dir, boolean wr) 536 { 537 538 #ifdef SECURE 539 if (dir /* User specified directory? */ 540 #ifdef HACKDIR 541 && strcmp(dir, HACKDIR) /* and not the default? */ 542 #endif 543 ) { 544 (void) setuid(getuid()); /* Ron Wessels */ 545 (void) setgid(getgid()); 546 } 547 #endif 548 549 #ifdef HACKDIR 550 if (dir == NULL) 551 dir = HACKDIR; 552 #endif 553 554 if (dir && chdir(dir) < 0) { 555 perror(dir); 556 error("Cannot chdir to %s.", dir); 557 } 558 /* warn the player if he cannot write the record file */ 559 /* perhaps we should also test whether . is writable */ 560 /* unfortunately the access systemcall is worthless */ 561 if (wr) { 562 int fd; 563 564 if (dir == NULL) 565 dir = "."; 566 if ((fd = open(RECORD, O_RDWR)) < 0) { 567 printf("Warning: cannot write %s/%s", dir, RECORD); 568 getret(); 569 } else 570 (void) close(fd); 571 } 572 } 573 #endif 574 575 void 576 stop_occupation(void) 577 { 578 if (occupation) { 579 pline("You stop %s.", occtxt); 580 occupation = 0; 581 } 582 } 583