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main.c revision 1.20.6.1 
      1 /*	$NetBSD: main.c,v 1.20.6.1 2012/10/30 18:58:17 yamt Exp $	*/
      2 
      3 /*-
      4  * Copyright (c) 1990, 1993
      5  *	The Regents of the University of California.  All rights reserved.
      6  *
      7  * This code is derived from software contributed to Berkeley by
      8  * Ed James.
      9  *
     10  * Redistribution and use in source and binary forms, with or without
     11  * modification, are permitted provided that the following conditions
     12  * are met:
     13  * 1. Redistributions of source code must retain the above copyright
     14  *    notice, this list of conditions and the following disclaimer.
     15  * 2. 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  * 3. Neither the name of the University nor the names of its contributors
     19  *    may be used to endorse or promote products derived from this software
     20  *    without specific prior written permission.
     21  *
     22  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     23  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     24  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     25  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     26  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     27  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     28  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     29  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     30  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     31  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     32  * SUCH DAMAGE.
     33  */
     34 
     35 /*
     36  * Copyright (c) 1987 by Ed James, UC Berkeley.  All rights reserved.
     37  *
     38  * Copy permission is hereby granted provided that this notice is
     39  * retained on all partial or complete copies.
     40  *
     41  * For more info on this and all of my stuff, mail edjames (at) berkeley.edu.
     42  */
     43 
     44 #include <sys/cdefs.h>
     45 #ifndef lint
     46 __COPYRIGHT("@(#) Copyright (c) 1990, 1993\
     47  The Regents of the University of California.  All rights reserved.");
     48 #endif /* not lint */
     49 
     50 #ifndef lint
     51 #if 0
     52 static char sccsid[] = "@(#)main.c	8.1 (Berkeley) 5/31/93";
     53 #else
     54 __RCSID("$NetBSD: main.c,v 1.20.6.1 2012/10/30 18:58:17 yamt Exp $");
     55 #endif
     56 #endif /* not lint */
     57 
     58 #include "include.h"
     59 #include "pathnames.h"
     60 
     61 extern FILE	*yyin;
     62 
     63 static int read_file(const char *);
     64 static const char *default_game(void);
     65 static const char *okay_game(const char *);
     66 static int list_games(void);
     67 
     68 int
     69 main(int argc, char *argv[])
     70 {
     71 	unsigned long		seed;
     72 	int			f_usage = 0, f_list = 0, f_showscore = 0;
     73 	int			f_printpath = 0;
     74 	const char		*file = NULL;
     75 	int			ch;
     76 	struct sigaction	sa;
     77 #ifdef BSD
     78 	struct itimerval	itv;
     79 #endif
     80 
     81 	/* Open the score file then revoke setgid privileges */
     82 	open_score_file();
     83 	(void)setgid(getgid());
     84 
     85 	start_time = time(NULL);
     86 	seed = start_time;
     87 
     88 	while ((ch = getopt(argc, argv, ":u?lstpg:f:r:")) != -1) {
     89 		switch (ch) {
     90 		case '?':
     91 		case 'u':
     92 		default:
     93 			f_usage = 1;
     94 			break;
     95 		case 'l':
     96 			f_list = 1;
     97 			break;
     98 		case 's':
     99 		case 't':
    100 			f_showscore = 1;
    101 			break;
    102 		case 'p':
    103 			f_printpath = 1;
    104 			break;
    105 		case 'r':
    106 			seed = atoi(optarg);
    107 			break;
    108 		case 'f':
    109 		case 'g':
    110 			file = optarg;
    111 			break;
    112 		}
    113 	}
    114 	if (optind < argc)
    115 		f_usage = 1;
    116 	srandom(seed);
    117 
    118 	if (f_usage)
    119 		(void)fprintf(stderr,
    120 		    "Usage: %s -[u?lstp] [-[gf] game_name] [-r random seed]\n",
    121 		    argv[0]);
    122 	if (f_showscore)
    123 		(void)log_score(1);
    124 	if (f_list)
    125 		(void)list_games();
    126 	if (f_printpath) {
    127 		char	buf[100];
    128 
    129 		(void)strlcpy(buf, _PATH_GAMES, 100);
    130 		(void)puts(buf);
    131 	}
    132 
    133 	if (f_usage || f_showscore || f_list || f_printpath)
    134 		exit(0);
    135 
    136 	if (file == NULL)
    137 		file = default_game();
    138 	else
    139 		file = okay_game(file);
    140 
    141 	if (file == NULL || read_file(file) < 0)
    142 		exit(1);
    143 
    144 	init_gr();
    145 	setup_screen(sp);
    146 
    147 	(void)addplane();
    148 
    149 	(void)signal(SIGINT, quit);
    150 	(void)signal(SIGQUIT, quit);
    151 #ifdef BSD
    152 	(void)signal(SIGTSTP, SIG_IGN);
    153 #endif
    154 	(void)signal(SIGHUP, log_score_quit);
    155 	(void)signal(SIGTERM, log_score_quit);
    156 
    157 	(void)tcgetattr(fileno(stdin), &tty_start);
    158 	tty_new = tty_start;
    159 	tty_new.c_lflag &= ~(ICANON|ECHO);
    160 	tty_new.c_iflag |= ICRNL;
    161 	tty_new.c_cc[VMIN] = 1;
    162 	tty_new.c_cc[VTIME] = 0;
    163 	(void)tcsetattr(fileno(stdin), TCSADRAIN, &tty_new);
    164 
    165 	sa.sa_handler = update;
    166 	(void)sigemptyset(&sa.sa_mask);
    167 	(void)sigaddset(&sa.sa_mask, SIGALRM);
    168 	(void)sigaddset(&sa.sa_mask, SIGINT);
    169 	sa.sa_flags = 0;
    170 	(void)sigaction(SIGALRM, &sa, (struct sigaction *)0);
    171 
    172 #ifdef BSD
    173 	itv.it_value.tv_sec = 0;
    174 	itv.it_value.tv_usec = 1;
    175 	itv.it_interval.tv_sec = sp->update_secs;
    176 	itv.it_interval.tv_usec = 0;
    177 	(void)setitimer(ITIMER_REAL, &itv, NULL);
    178 #endif
    179 #ifdef SYSV
    180 	alarm(sp->update_secs);
    181 #endif
    182 
    183 	for (;;) {
    184 		if (getcommand() != 1)
    185 			planewin();
    186 		else {
    187 #ifdef BSD
    188 			itv.it_value.tv_sec = 0;
    189 			itv.it_value.tv_usec = 0;
    190 			(void)setitimer(ITIMER_REAL, &itv, NULL);
    191 #endif
    192 #ifdef SYSV
    193 			alarm(0);
    194 #endif
    195 
    196 			update(0);
    197 
    198 #ifdef BSD
    199 			itv.it_value.tv_sec = sp->update_secs;
    200 			itv.it_value.tv_usec = 0;
    201 			itv.it_interval.tv_sec = sp->update_secs;
    202 			itv.it_interval.tv_usec = 0;
    203 			(void)setitimer(ITIMER_REAL, &itv, NULL);
    204 #endif
    205 #ifdef SYSV
    206 			alarm(sp->update_secs);
    207 #endif
    208 		}
    209 	}
    210 }
    211 
    212 static int
    213 read_file(const char *s)
    214 {
    215 	int		retval;
    216 
    217 	filename = s;
    218 	yyin = fopen(s, "r");
    219 	if (yyin == NULL) {
    220 		warn("fopen %s", s);
    221 		return (-1);
    222 	}
    223 	retval = yyparse();
    224 	(void)fclose(yyin);
    225 
    226 	if (retval != 0)
    227 		return (-1);
    228 	else
    229 		return (0);
    230 }
    231 
    232 static const char *
    233 default_game(void)
    234 {
    235 	FILE		*fp;
    236 	static char	file[256];
    237 	char		line[256], games[256];
    238 
    239 	(void)strlcpy(games, _PATH_GAMES, 256);
    240 	(void)strlcat(games, GAMES, 256);
    241 
    242 	if ((fp = fopen(games, "r")) == NULL) {
    243 		warn("fopen %s", games);
    244 		return (NULL);
    245 	}
    246 	if (fgets(line, sizeof(line), fp) == NULL) {
    247 		(void)fprintf(stderr, "%s: no default game available\n", games);
    248 		fclose(fp);
    249 		return (NULL);
    250 	}
    251 	(void)fclose(fp);
    252 	line[strlen(line) - 1] = '\0';
    253 	(void)strlcpy(file, _PATH_GAMES, 256);
    254 	(void)strlcat(file, line, 256);
    255 	return (file);
    256 }
    257 
    258 static const char *
    259 okay_game(const char *s)
    260 {
    261 	FILE		*fp;
    262 	static char	file[256];
    263 	const char	*ret = NULL;
    264 	char		line[256], games[256];
    265 
    266 	(void)strlcpy(games, _PATH_GAMES, 256);
    267 	(void)strlcat(games, GAMES, 256);
    268 
    269 	if ((fp = fopen(games, "r")) == NULL) {
    270 		warn("fopen %s", games);
    271 		return (NULL);
    272 	}
    273 	while (fgets(line, sizeof(line), fp) != NULL) {
    274 		line[strlen(line) - 1] = '\0';
    275 		if (strcmp(s, line) == 0) {
    276 			(void)strlcpy(file, _PATH_GAMES, 256);
    277 			(void)strlcat(file, line, 256);
    278 			ret = file;
    279 			break;
    280 		}
    281 	}
    282 	(void)fclose(fp);
    283 	if (ret == NULL) {
    284 		test_mode = 1;
    285 		ret = s;
    286 		(void)fprintf(stderr, "%s: %s: game not found\n", games, s);
    287 		(void)fprintf(stderr, "Your score will not be logged.\n");
    288 		(void)sleep(2);	/* give the guy time to read it */
    289 	}
    290 	return (ret);
    291 }
    292 
    293 static int
    294 list_games(void)
    295 {
    296 	FILE		*fp;
    297 	char		line[256], games[256];
    298 	int		num_games = 0;
    299 
    300 	(void)strlcpy(games, _PATH_GAMES, 256);
    301 	(void)strlcat(games, GAMES, 256);
    302 
    303 	if ((fp = fopen(games, "r")) == NULL) {
    304 		warn("fopen %s", games);
    305 		return (-1);
    306 	}
    307 	(void)puts("available games:");
    308 	while (fgets(line, sizeof(line), fp) != NULL) {
    309 		(void)printf("	%s", line);
    310 		num_games++;
    311 	}
    312 	(void)fclose(fp);
    313 	if (num_games == 0) {
    314 		(void)fprintf(stderr, "%s: no games available\n", games);
    315 		return (-1);
    316 	}
    317 	return (0);
    318 }
    319