main.c revision 1.17
1 /* $NetBSD: main.c,v 1.17 2006/06/07 09:35:03 jnemeth 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 1.17 2006/06/07 09:35:03 jnemeth 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, ":u?lstpg: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)strlcpy(buf, _PATH_GAMES, 100); 124 (void)puts(buf); 125 } 126 127 if (f_usage || f_showscore || f_list || f_printpath) 128 exit(0); 129 130 if (file == NULL) 131 file = default_game(); 132 else 133 file = okay_game(file); 134 135 if (file == NULL || read_file(file) < 0) 136 exit(1); 137 138 init_gr(); 139 setup_screen(sp); 140 141 (void)addplane(); 142 143 (void)signal(SIGINT, quit); 144 (void)signal(SIGQUIT, quit); 145 #ifdef BSD 146 (void)signal(SIGTSTP, SIG_IGN); 147 #endif 148 (void)signal(SIGHUP, log_score_quit); 149 (void)signal(SIGTERM, log_score_quit); 150 151 (void)tcgetattr(fileno(stdin), &tty_start); 152 tty_new = tty_start; 153 tty_new.c_lflag &= ~(ICANON|ECHO); 154 tty_new.c_iflag |= ICRNL; 155 tty_new.c_cc[VMIN] = 1; 156 tty_new.c_cc[VTIME] = 0; 157 (void)tcsetattr(fileno(stdin), TCSADRAIN, &tty_new); 158 159 sa.sa_handler = update; 160 (void)sigemptyset(&sa.sa_mask); 161 (void)sigaddset(&sa.sa_mask, SIGALRM); 162 (void)sigaddset(&sa.sa_mask, SIGINT); 163 sa.sa_flags = 0; 164 (void)sigaction(SIGALRM, &sa, (struct sigaction *)0); 165 166 #ifdef BSD 167 itv.it_value.tv_sec = 0; 168 itv.it_value.tv_usec = 1; 169 itv.it_interval.tv_sec = sp->update_secs; 170 itv.it_interval.tv_usec = 0; 171 (void)setitimer(ITIMER_REAL, &itv, NULL); 172 #endif 173 #ifdef SYSV 174 alarm(sp->update_secs); 175 #endif 176 177 for (;;) { 178 if (getcommand() != 1) 179 planewin(); 180 else { 181 #ifdef BSD 182 itv.it_value.tv_sec = 0; 183 itv.it_value.tv_usec = 0; 184 (void)setitimer(ITIMER_REAL, &itv, NULL); 185 #endif 186 #ifdef SYSV 187 alarm(0); 188 #endif 189 190 update(0); 191 192 #ifdef BSD 193 itv.it_value.tv_sec = sp->update_secs; 194 itv.it_value.tv_usec = 0; 195 itv.it_interval.tv_sec = sp->update_secs; 196 itv.it_interval.tv_usec = 0; 197 (void)setitimer(ITIMER_REAL, &itv, NULL); 198 #endif 199 #ifdef SYSV 200 alarm(sp->update_secs); 201 #endif 202 } 203 } 204 } 205 206 int 207 read_file(const char *s) 208 { 209 int retval; 210 211 filename = s; 212 yyin = fopen(s, "r"); 213 if (yyin == NULL) { 214 warn("fopen %s", s); 215 return (-1); 216 } 217 retval = yyparse(); 218 (void)fclose(yyin); 219 220 if (retval != 0) 221 return (-1); 222 else 223 return (0); 224 } 225 226 const char * 227 default_game(void) 228 { 229 FILE *fp; 230 static char file[256]; 231 char line[256], games[256]; 232 233 (void)strlcpy(games, _PATH_GAMES, 256); 234 (void)strlcat(games, GAMES, 256); 235 236 if ((fp = fopen(games, "r")) == NULL) { 237 warn("fopen %s", games); 238 return (NULL); 239 } 240 if (fgets(line, sizeof(line), fp) == NULL) { 241 (void)fprintf(stderr, "%s: no default game available\n", games); 242 fclose(fp); 243 return (NULL); 244 } 245 (void)fclose(fp); 246 line[strlen(line) - 1] = '\0'; 247 (void)strlcpy(file, _PATH_GAMES, 256); 248 (void)strlcat(file, line, 256); 249 return (file); 250 } 251 252 const char * 253 okay_game(const char *s) 254 { 255 FILE *fp; 256 static char file[256]; 257 const char *ret = NULL; 258 char line[256], games[256]; 259 260 (void)strlcpy(games, _PATH_GAMES, 256); 261 (void)strlcat(games, GAMES, 256); 262 263 if ((fp = fopen(games, "r")) == NULL) { 264 warn("fopen %s", games); 265 return (NULL); 266 } 267 while (fgets(line, sizeof(line), fp) != NULL) { 268 line[strlen(line) - 1] = '\0'; 269 if (strcmp(s, line) == 0) { 270 (void)strlcpy(file, _PATH_GAMES, 256); 271 (void)strlcat(file, line, 256); 272 ret = file; 273 break; 274 } 275 } 276 (void)fclose(fp); 277 if (ret == NULL) { 278 test_mode = 1; 279 ret = s; 280 (void)fprintf(stderr, "%s: %s: game not found\n", games, s); 281 (void)fprintf(stderr, "Your score will not be logged.\n"); 282 (void)sleep(2); /* give the guy time to read it */ 283 } 284 return (ret); 285 } 286 287 int 288 list_games(void) 289 { 290 FILE *fp; 291 char line[256], games[256]; 292 int num_games = 0; 293 294 (void)strlcpy(games, _PATH_GAMES, 256); 295 (void)strlcat(games, GAMES, 256); 296 297 if ((fp = fopen(games, "r")) == NULL) { 298 warn("fopen %s", games); 299 return (-1); 300 } 301 (void)puts("available games:"); 302 while (fgets(line, sizeof(line), fp) != NULL) { 303 (void)printf(" %s", line); 304 num_games++; 305 } 306 (void)fclose(fp); 307 if (num_games == 0) { 308 (void)fprintf(stderr, "%s: no games available\n", games); 309 return (-1); 310 } 311 return (0); 312 } 313
Indexes created Tue Sep 30 20:09:53 GMT 2025