1 /* $NetBSD: main.c,v 1.20 2009/08/12 04:48:03 dholland 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@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 2009/08/12 04:48:03 dholland 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++; 94 break; 95 case 'l': 96 f_list++; 97 break; 98 case 's': 99 case 't': 100 f_showscore++; 101 break; 102 case 'p': 103 f_printpath++; 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++; 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