main.c revision 1.16
1 /* $NetBSD: main.c,v 1.16 2006/03/18 23:38:12 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. 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\n\ 47 The Regents of the University of California. All rights reserved.\n"); 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 1.16 2006/03/18 23:38:12 christos Exp $"); 55 #endif 56 #endif /* not lint */ 57 58 #include "include.h" 59 #include "pathnames.h" 60 61 extern FILE *yyin; 62 63 int 64 main(int argc, char *argv[]) 65 { 66 int seed; 67 int f_usage = 0, f_list = 0, f_showscore = 0; 68 int f_printpath = 0; 69 const char *file = NULL; 70 int ch; 71 struct sigaction sa; 72 #ifdef BSD 73 struct itimerval itv; 74 #endif 75 76 /* Open the score file then revoke setgid privileges */ 77 open_score_file(); 78 (void)setgid(getgid()); 79 80 start_time = seed = time(NULL); 81 82 while ((ch = getopt(argc, argv, "ulstpg:f:r:")) != -1) { 83 switch (ch) { 84 case '?': 85 case 'u': 86 default: 87 f_usage++; 88 break; 89 case 'l': 90 f_list++; 91 break; 92 case 's': 93 case 't': 94 f_showscore++; 95 break; 96 case 'p': 97 f_printpath++; 98 break; 99 case 'r': 100 seed = atoi(optarg); 101 break; 102 case 'f': 103 case 'g': 104 file = optarg; 105 break; 106 } 107 } 108 if (optind < argc) 109 f_usage++; 110 srandom((unsigned long)seed); 111 112 if (f_usage) 113 (void)fprintf(stderr, 114 "Usage: %s -[u?lstp] [-[gf] game_name] [-r random seed]\n", 115 argv[0]); 116 if (f_showscore) 117 (void)log_score(1); 118 if (f_list) 119 (void)list_games(); 120 if (f_printpath) { 121 char buf[100]; 122 123 (void)strcpy(buf, _PATH_GAMES); 124 buf[strlen(buf) - 1] = '\0'; 125 (void)puts(buf); 126 } 127 128 if (f_usage || f_showscore || f_list || f_printpath) 129 exit(0); 130 131 if (file == NULL) 132 file = default_game(); 133 else 134 file = okay_game(file); 135 136 if (file == NULL || read_file(file) < 0) 137 exit(1); 138 139 init_gr(); 140 setup_screen(sp); 141 142 (void)addplane(); 143 144 (void)signal(SIGINT, quit); 145 (void)signal(SIGQUIT, quit); 146 #ifdef BSD 147 (void)signal(SIGTSTP, SIG_IGN); 148 (void)signal(SIGSTOP, SIG_IGN); 149 #endif 150 (void)signal(SIGHUP, log_score_quit); 151 (void)signal(SIGTERM, log_score_quit); 152 153 (void)tcgetattr(fileno(stdin), &tty_start); 154 tty_new = tty_start; 155 tty_new.c_lflag &= ~(ICANON|ECHO); 156 tty_new.c_iflag |= ICRNL; 157 tty_new.c_cc[VMIN] = 1; 158 tty_new.c_cc[VTIME] = 0; 159 (void)tcsetattr(fileno(stdin), TCSADRAIN, &tty_new); 160 161 sa.sa_handler = update; 162 (void)sigemptyset(&sa.sa_mask); 163 (void)sigaddset(&sa.sa_mask, SIGALRM); 164 (void)sigaddset(&sa.sa_mask, SIGINT); 165 sa.sa_flags = 0; 166 (void)sigaction(SIGALRM, &sa, (struct sigaction *)0); 167 168 #ifdef BSD 169 itv.it_value.tv_sec = 0; 170 itv.it_value.tv_usec = 1; 171 itv.it_interval.tv_sec = sp->update_secs; 172 itv.it_interval.tv_usec = 0; 173 (void)setitimer(ITIMER_REAL, &itv, NULL); 174 #endif 175 #ifdef SYSV 176 alarm(sp->update_secs); 177 #endif 178 179 for (;;) { 180 if (getcommand() != 1) 181 planewin(); 182 else { 183 #ifdef BSD 184 itv.it_value.tv_sec = 0; 185 itv.it_value.tv_usec = 0; 186 (void)setitimer(ITIMER_REAL, &itv, NULL); 187 #endif 188 #ifdef SYSV 189 alarm(0); 190 #endif 191 192 update(0); 193 194 #ifdef BSD 195 itv.it_value.tv_sec = sp->update_secs; 196 itv.it_value.tv_usec = 0; 197 itv.it_interval.tv_sec = sp->update_secs; 198 itv.it_interval.tv_usec = 0; 199 (void)setitimer(ITIMER_REAL, &itv, NULL); 200 #endif 201 #ifdef SYSV 202 alarm(sp->update_secs); 203 #endif 204 } 205 } 206 } 207 208 int 209 read_file(const char *s) 210 { 211 int retval; 212 213 filename = s; 214 yyin = fopen(s, "r"); 215 if (yyin == NULL) { 216 warn("fopen %s", s); 217 return (-1); 218 } 219 retval = yyparse(); 220 (void)fclose(yyin); 221 222 if (retval != 0) 223 return (-1); 224 else 225 return (0); 226 } 227 228 const char * 229 default_game(void) 230 { 231 FILE *fp; 232 static char file[256]; 233 char line[256], games[256]; 234 235 (void)strcpy(games, _PATH_GAMES); 236 (void)strcat(games, GAMES); 237 238 if ((fp = fopen(games, "r")) == NULL) { 239 warn("fopen %s", games); 240 return (NULL); 241 } 242 if (fgets(line, sizeof(line), fp) == NULL) { 243 (void)fprintf(stderr, "%s: no default game available\n", games); 244 fclose(fp); 245 return (NULL); 246 } 247 (void)fclose(fp); 248 line[strlen(line) - 1] = '\0'; 249 (void)strcpy(file, _PATH_GAMES); 250 (void)strcat(file, line); 251 return (file); 252 } 253 254 const char * 255 okay_game(const char *s) 256 { 257 FILE *fp; 258 static char file[256]; 259 const char *ret = NULL; 260 char line[256], games[256]; 261 262 (void)strcpy(games, _PATH_GAMES); 263 (void)strcat(games, GAMES); 264 265 if ((fp = fopen(games, "r")) == NULL) { 266 warn("fopen %s", games); 267 return (NULL); 268 } 269 while (fgets(line, sizeof(line), fp) != NULL) { 270 line[strlen(line) - 1] = '\0'; 271 if (strcmp(s, line) == 0) { 272 (void)strcpy(file, _PATH_GAMES); 273 (void)strcat(file, line); 274 ret = file; 275 break; 276 } 277 } 278 (void)fclose(fp); 279 if (ret == NULL) { 280 test_mode = 1; 281 ret = s; 282 (void)fprintf(stderr, "%s: %s: game not found\n", games, s); 283 (void)fprintf(stderr, "Your score will not be logged.\n"); 284 (void)sleep(2); /* give the guy time to read it */ 285 } 286 return (ret); 287 } 288 289 int 290 list_games(void) 291 { 292 FILE *fp; 293 char line[256], games[256]; 294 int num_games = 0; 295 296 (void)strcpy(games, _PATH_GAMES); 297 (void)strcat(games, GAMES); 298 299 if ((fp = fopen(games, "r")) == NULL) { 300 warn("fopen %s", games); 301 return (-1); 302 } 303 (void)puts("available games:"); 304 while (fgets(line, sizeof(line), fp) != NULL) { 305 (void)printf(" %s", line); 306 num_games++; 307 } 308 (void)fclose(fp); 309 if (num_games == 0) { 310 (void)fprintf(stderr, "%s: no games available\n", games); 311 return (-1); 312 } 313 return (0); 314 } 315
Indexes created Tue Sep 30 20:09:53 GMT 2025