games/atc/main.c

   1 /*-
   2  * Copyright (c) 1990, 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  * Ed James.
   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. All advertising materials mentioning features or use of this software
  17  *    must display the following acknowledgement:
  18  *      This product includes software developed by the University of
  19  *      California, Berkeley and its contributors.
  20  * 4. Neither the name of the University nor the names of its contributors
  21  *    may be used to endorse or promote products derived from this software
  22  *    without specific prior written permission.
  23  *
  24  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
  25  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  26  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  27  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
  28  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  29  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  30  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  31  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  32  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  33  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  34  * SUCH DAMAGE.
  35  *
  36  * @(#) Copyright (c) 1990, 1993 The Regents of the University of California.  All rights reserved.
  37  * @(#)main.c   8.1 (Berkeley) 5/31/93
  38  * $FreeBSD: src/games/atc/main.c,v 1.9 1999/11/30 03:48:21 billf Exp $
  39  * $DragonFly: src/games/atc/main.c,v 1.4 2006/10/08 17:11:30 pavalos Exp $
  40  */
  41
  42 /*
  43  * Copyright (c) 1987 by Ed James, UC Berkeley.  All rights reserved.
  44  *
  45  * Copy permission is hereby granted provided that this notice is
  46  * retained on all partial or complete copies.
  47  *
  48  * For more info on this and all of my stuff, mail edjames@berkeley.edu.
  49  */
  50
  51 #include "include.h"
  52 #include "pathnames.h"
  53
  54 extern FILE     *yyin;
  55 static int      read_file(const char *);
  56 static const char       *default_game(void);
  57 static const char       *okay_game(const char *);
  58 static int      list_games(void);
  59
  60
  61 int
  62 main(__unused int ac, char **av)
  63 {
  64         int                     seed = 0;
  65         int                     f_usage = 0, f_list = 0, f_showscore = 0;
  66         int                     f_printpath = 0;
  67         const char              *file = NULL;
  68         char                    *p_name, *ptr;
  69 #ifdef BSD
  70         struct itimerval        itv;
  71 #endif
  72
  73         /* Open the score file then revoke setgid privileges */
  74         open_score_file();
  75         setregid(getgid(), getgid());
  76
  77         start_time = time(0);
  78
  79         p_name = *av++;
  80         while (*av) {
  81 #ifndef SAVEDASH
  82                 if (**av == '-')
  83                         ++*av;
  84                 else
  85                         break;
  86 #endif
  87                 ptr = *av++;
  88                 while (*ptr) {
  89                         switch (*ptr) {
  90                         case '?':
  91                         case 'u':
  92                                 f_usage++;
  93                                 break;
  94                         case 'l':
  95                                 f_list++;
  96                                 break;
  97                         case 's':
  98                         case 't':
  99                                 f_showscore++;
 100                                 break;
 101                         case 'p':
 102                                 f_printpath++;
 103                                 break;
 104                         case 'r':
 105                                 srandom(atoi(*av));
 106                                 seed = 1;
 107                                 av++;
 108                                 break;
 109                         case 'f':
 110                         case 'g':
 111                                 file = *av;
 112                                 av++;
 113                                 break;
 114                         default:
 115                                 fprintf(stderr, "Unknown option '%c'\n", *ptr);
 116                                 f_usage++;
 117                                 break;
 118                         }
 119                         ptr++;
 120                 }
 121         }
 122         if (!seed)
 123                 srandomdev();
 124
 125         if (f_usage)
 126                 fprintf(stderr,
 127                     "Usage: %s -[u?lstp] [-[gf] game_name] [-r random seed]\n",
 128                         p_name);
 129         if (f_showscore)
 130                 log_score(1);
 131         if (f_list)
 132                 list_games();
 133         if (f_printpath) {
 134                 char    buf[100];
 135
 136                 strcpy(buf, _PATH_GAMES);
 137                 buf[strlen(buf) - 1] = '\0';
 138                 puts(buf);
 139         }
 140
 141         if (f_usage || f_showscore || f_list || f_printpath)
 142                 exit(0);
 143
 144         if (file == NULL)
 145                 file = default_game();
 146         else
 147                 file = okay_game(file);
 148
 149         if (file == NULL || read_file(file) < 0)
 150                 exit(1);
 151
 152         init_gr();
 153         setup_screen(sp);
 154
 155         addplane();
 156
 157         signal(SIGINT, (sig_t)quit);
 158         signal(SIGQUIT, (sig_t)quit);
 159 #ifdef BSD
 160         signal(SIGTSTP, SIG_IGN);
 161         signal(SIGSTOP, SIG_IGN);
 162 #endif
 163         signal(SIGHUP, (sig_t)log_score);
 164         signal(SIGTERM, (sig_t)log_score);
 165
 166 #ifdef BSD
 167         ioctl(fileno(stdin), TIOCGETP, &tty_start);
 168         bcopy(&tty_start, &tty_new, sizeof(tty_new));
 169         tty_new.sg_flags |= CBREAK;
 170         tty_new.sg_flags &= ~ECHO;
 171         ioctl(fileno(stdin), TIOCSETP, &tty_new);
 172 #endif
 173
 174 #ifdef SYSV
 175         ioctl(fileno(stdin), TCGETA, &tty_start);
 176         bcopy(&tty_start, &tty_new, sizeof(tty_new));
 177         tty_new.c_lflag &= ~ICANON;
 178         tty_new.c_lflag &= ~ECHO;
 179         tty_new.c_cc[VMIN] = 1;
 180         tty_new.c_cc[VTIME] = 0;
 181         ioctl(fileno(stdin), TCSETAW, &tty_new);
 182 #endif
 183
 184         signal(SIGALRM, (sig_t)update);
 185
 186 #ifdef BSD
 187         itv.it_value.tv_sec = 0;
 188         itv.it_value.tv_usec = 1;
 189         itv.it_interval.tv_sec = sp->update_secs;
 190         itv.it_interval.tv_usec = 0;
 191         setitimer(ITIMER_REAL, &itv, NULL);
 192 #endif
 193 #ifdef SYSV
 194         alarm(sp->update_secs);
 195 #endif
 196
 197         for (;;) {
 198                 if (getcommand() != 1)
 199                         planewin();
 200                 else {
 201 #ifdef BSD
 202                         itv.it_value.tv_sec = 0;
 203                         itv.it_value.tv_usec = 0;
 204                         setitimer(ITIMER_REAL, &itv, NULL);
 205 #endif
 206 #ifdef SYSV
 207                         alarm(0);
 208 #endif
 209
 210                         update();
 211
 212 #ifdef BSD
 213                         itv.it_value.tv_sec = sp->update_secs;
 214                         itv.it_value.tv_usec = 0;
 215                         itv.it_interval.tv_sec = sp->update_secs;
 216                         itv.it_interval.tv_usec = 0;
 217                         setitimer(ITIMER_REAL, &itv, NULL);
 218 #endif
 219 #ifdef SYSV
 220                         alarm(sp->update_secs);
 221 #endif
 222                 }
 223         }
 224 }
 225
 226 static int
 227 read_file(const char *s)
 228 {
 229         int             retval;
 230
 231         filename = s;
 232         yyin = fopen(s, "r");
 233         if (yyin == NULL) {
 234                 perror(s);
 235                 return (-1);
 236         }
 237         retval = yyparse();
 238         fclose(yyin);
 239
 240         if (retval != 0)
 241                 return (-1);
 242         else
 243                 return (0);
 244 }
 245
 246 static const char *
 247 default_game(void)
 248 {
 249         FILE            *fp;
 250         static char     file[256];
 251         char            line[256], games[256];
 252
 253         strcpy(games, _PATH_GAMES);
 254         strcat(games, GAMES);
 255
 256         if ((fp = fopen(games, "r")) == NULL) {
 257                 perror(games);
 258                 return (NULL);
 259         }
 260         if (fgets(line, sizeof(line), fp) == NULL) {
 261                 fprintf(stderr, "%s: no default game available\n", games);
 262                 return (NULL);
 263         }
 264         fclose(fp);
 265         line[strlen(line) - 1] = '\0';
 266         strcpy(file, _PATH_GAMES);
 267         strcat(file, line);
 268         return (file);
 269 }
 270
 271 static const char *
 272 okay_game(const char *s)
 273 {
 274         FILE            *fp;
 275         static char     file[256];
 276         const char      *ret = NULL;
 277         char            line[256], games[256];
 278
 279         strcpy(games, _PATH_GAMES);
 280         strcat(games, GAMES);
 281
 282         if ((fp = fopen(games, "r")) == NULL) {
 283                 perror(games);
 284                 return (NULL);
 285         }
 286         while (fgets(line, sizeof(line), fp) != NULL) {
 287                 line[strlen(line) - 1] = '\0';
 288                 if (strcmp(s, line) == 0) {
 289                         strcpy(file, _PATH_GAMES);
 290                         strcat(file, line);
 291                         ret = file;
 292                         break;
 293                 }
 294         }
 295         fclose(fp);
 296         if (ret == NULL) {
 297                 test_mode = 1;
 298                 ret = s;
 299                 fprintf(stderr, "%s: %s: game not found\n", games, s);
 300                 fprintf(stderr, "Your score will not be logged.\n");
 301                 sleep(2);       /* give the guy time to read it */
 302         }
 303         return (ret);
 304 }
 305
 306 static int
 307 list_games(void)
 308 {
 309         FILE            *fp;
 310         char            line[256], games[256];
 311         int             num_games = 0;
 312
 313         strcpy(games, _PATH_GAMES);
 314         strcat(games, GAMES);
 315
 316         if ((fp = fopen(games, "r")) == NULL) {
 317                 perror(games);
 318                 return (-1);
 319         }
 320         puts("available games:");
 321         while (fgets(line, sizeof(line), fp) != NULL) {
 322                 printf("        %s", line);
 323                 num_games++;
 324         }
 325         fclose(fp);
 326         if (num_games == 0) {
 327                 fprintf(stderr, "%s: no games available\n", games);
 328                 return (-1);
 329         }
 330         return (0);
 331 }