main.c revision 1.12
1 /* $NetBSD: main.c,v 1.12 2001/02/05 00:22:52 christos 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. All advertising materials mentioning features or use of this software 19 * must display the following acknowledgement: 20 * This product includes software developed by the University of 21 * California, Berkeley and its contributors. 22 * 4. Neither the name of the University nor the names of its contributors 23 * may be used to endorse or promote products derived from this software 24 * without specific prior written permission. 25 * 26 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 27 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 28 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 29 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 30 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 31 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 32 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 33 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 34 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 35 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 36 * SUCH DAMAGE. 37 */ 38 39 /* 40 * Copyright (c) 1987 by Ed James, UC Berkeley. All rights reserved. 41 * 42 * Copy permission is hereby granted provided that this notice is 43 * retained on all partial or complete copies. 44 * 45 * For more info on this and all of my stuff, mail edjames (at) berkeley.edu. 46 */ 47 48 #include <sys/cdefs.h> 49 #ifndef lint 50 __COPYRIGHT("@(#) Copyright (c) 1990, 1993\n\ 51 The Regents of the University of California. All rights reserved.\n"); 52 #endif /* not lint */ 53 54 #ifndef lint 55 #if 0 56 static char sccsid[] = "@(#)main.c 8.1 (Berkeley) 5/31/93"; 57 #else 58 __RCSID("$NetBSD: main.c,v 1.12 2001/02/05 00:22:52 christos Exp $"); 59 #endif 60 #endif /* not lint */ 61 62 #include "include.h" 63 #include "pathnames.h" 64 65 extern FILE *yyin; 66 67 int 68 main(ac, av) 69 int ac; 70 char *av[]; 71 { 72 int seed; 73 int f_usage = 0, f_list = 0, f_showscore = 0; 74 int f_printpath = 0; 75 const char *file = NULL; 76 int ch; 77 struct sigaction sa; 78 #ifdef BSD 79 struct itimerval itv; 80 #endif 81 82 /* Open the score file then revoke setgid privileges */ 83 open_score_file(); 84 setgid(getgid()); 85 86 start_time = seed = time(NULL); 87 88 while ((ch = getopt(ac, av, "ulstpg: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 < ac) 115 f_usage++; 116 srandom(seed); 117 118 if (f_usage) 119 fprintf(stderr, 120 "Usage: %s -[u?lstp] [-[gf] game_name] [-r random seed]\n", 121 av[0]); 122 if (f_showscore) 123 log_score(1); 124 if (f_list) 125 list_games(); 126 if (f_printpath) { 127 char buf[100]; 128 129 strcpy(buf, _PATH_GAMES); 130 buf[strlen(buf) - 1] = '\0'; 131 puts(buf); 132 } 133 134 if (f_usage || f_showscore || f_list || f_printpath) 135 exit(0); 136 137 if (file == NULL) 138 file = default_game(); 139 else 140 file = okay_game(file); 141 142 if (file == NULL || read_file(file) < 0) 143 exit(1); 144 145 init_gr(); 146 setup_screen(sp); 147 148 addplane(); 149 150 signal(SIGINT, quit); 151 signal(SIGQUIT, quit); 152 #ifdef BSD 153 signal(SIGTSTP, SIG_IGN); 154 signal(SIGSTOP, SIG_IGN); 155 #endif 156 signal(SIGHUP, log_score_quit); 157 signal(SIGTERM, log_score_quit); 158 159 tcgetattr(fileno(stdin), &tty_start); 160 tty_new = tty_start; 161 tty_new.c_lflag &= ~(ICANON|ECHO); 162 tty_new.c_iflag |= ICRNL; 163 tty_new.c_cc[VMIN] = 1; 164 tty_new.c_cc[VTIME] = 0; 165 tcsetattr(fileno(stdin), TCSADRAIN, &tty_new); 166 167 sa.sa_handler = update; 168 sigemptyset(&sa.sa_mask); 169 sigaddset(&sa.sa_mask, SIGALRM); 170 sigaddset(&sa.sa_mask, SIGINT); 171 sa.sa_flags = 0; 172 sigaction(SIGALRM, &sa, (struct sigaction *)0); 173 174 #ifdef BSD 175 itv.it_value.tv_sec = 0; 176 itv.it_value.tv_usec = 1; 177 itv.it_interval.tv_sec = sp->update_secs; 178 itv.it_interval.tv_usec = 0; 179 setitimer(ITIMER_REAL, &itv, NULL); 180 #endif 181 #ifdef SYSV 182 alarm(sp->update_secs); 183 #endif 184 185 for (;;) { 186 if (getcommand() != 1) 187 planewin(); 188 else { 189 #ifdef BSD 190 itv.it_value.tv_sec = 0; 191 itv.it_value.tv_usec = 0; 192 setitimer(ITIMER_REAL, &itv, NULL); 193 #endif 194 #ifdef SYSV 195 alarm(0); 196 #endif 197 198 update(0); 199 200 #ifdef BSD 201 itv.it_value.tv_sec = sp->update_secs; 202 itv.it_value.tv_usec = 0; 203 itv.it_interval.tv_sec = sp->update_secs; 204 itv.it_interval.tv_usec = 0; 205 setitimer(ITIMER_REAL, &itv, NULL); 206 #endif 207 #ifdef SYSV 208 alarm(sp->update_secs); 209 #endif 210 } 211 } 212 } 213 214 int 215 read_file(s) 216 const char *s; 217 { 218 int retval; 219 220 file = s; 221 yyin = fopen(s, "r"); 222 if (yyin == NULL) { 223 warn("fopen %s", s); 224 return (-1); 225 } 226 retval = yyparse(); 227 fclose(yyin); 228 229 if (retval != 0) 230 return (-1); 231 else 232 return (0); 233 } 234 235 const char * 236 default_game() 237 { 238 FILE *fp; 239 static char file[256]; 240 char line[256], games[256]; 241 242 strcpy(games, _PATH_GAMES); 243 strcat(games, GAMES); 244 245 if ((fp = fopen(games, "r")) == NULL) { 246 warn("fopen %s", games); 247 return (NULL); 248 } 249 if (fgets(line, sizeof(line), fp) == NULL) { 250 fprintf(stderr, "%s: no default game available\n", games); 251 return (NULL); 252 } 253 fclose(fp); 254 line[strlen(line) - 1] = '\0'; 255 strcpy(file, _PATH_GAMES); 256 strcat(file, line); 257 return (file); 258 } 259 260 const char * 261 okay_game(s) 262 const char *s; 263 { 264 FILE *fp; 265 static char file[256]; 266 const char *ret = NULL; 267 char line[256], games[256]; 268 269 strcpy(games, _PATH_GAMES); 270 strcat(games, GAMES); 271 272 if ((fp = fopen(games, "r")) == NULL) { 273 warn("fopen %s", games); 274 return (NULL); 275 } 276 while (fgets(line, sizeof(line), fp) != NULL) { 277 line[strlen(line) - 1] = '\0'; 278 if (strcmp(s, line) == 0) { 279 strcpy(file, _PATH_GAMES); 280 strcat(file, line); 281 ret = file; 282 break; 283 } 284 } 285 fclose(fp); 286 if (ret == NULL) { 287 test_mode = 1; 288 ret = s; 289 fprintf(stderr, "%s: %s: game not found\n", games, s); 290 fprintf(stderr, "Your score will not be logged.\n"); 291 sleep(2); /* give the guy time to read it */ 292 } 293 return (ret); 294 } 295 296 int 297 list_games() 298 { 299 FILE *fp; 300 char line[256], games[256]; 301 int num_games = 0; 302 303 strcpy(games, _PATH_GAMES); 304 strcat(games, GAMES); 305 306 if ((fp = fopen(games, "r")) == NULL) { 307 warn("fopen %s", games); 308 return (-1); 309 } 310 puts("available games:"); 311 while (fgets(line, sizeof(line), fp) != NULL) { 312 printf(" %s", line); 313 num_games++; 314 } 315 fclose(fp); 316 if (num_games == 0) { 317 fprintf(stderr, "%s: no games available\n", games); 318 return (-1); 319 } 320 return (0); 321 } 322
Indexes created Tue Sep 30 20:09:53 GMT 2025