main.c revision 1.18
1 /* $NetBSD: main.c,v 1.18 2008/01/31 05:19:44 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 (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 1.18 2008/01/31 05:19:44 dholland 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 unsigned long 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 = time(NULL); 81 seed = start_time; 82 83 while ((ch = getopt(argc, argv, ":u?lstpg:f:r:")) != -1) { 84 switch (ch) { 85 case '?': 86 case 'u': 87 default: 88 f_usage++; 89 break; 90 case 'l': 91 f_list++; 92 break; 93 case 's': 94 case 't': 95 f_showscore++; 96 break; 97 case 'p': 98 f_printpath++; 99 break; 100 case 'r': 101 seed = atoi(optarg); 102 break; 103 case 'f': 104 case 'g': 105 file = optarg; 106 break; 107 } 108 } 109 if (optind < argc) 110 f_usage++; 111 srandom(seed); 112 113 if (f_usage) 114 (void)fprintf(stderr, 115 "Usage: %s -[u?lstp] [-[gf] game_name] [-r random seed]\n", 116 argv[0]); 117 if (f_showscore) 118 (void)log_score(1); 119 if (f_list) 120 (void)list_games(); 121 if (f_printpath) { 122 char buf[100]; 123 124 (void)strlcpy(buf, _PATH_GAMES, 100); 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 #endif 149 (void)signal(SIGHUP, log_score_quit); 150 (void)signal(SIGTERM, log_score_quit); 151 152 (void)tcgetattr(fileno(stdin), &tty_start); 153 tty_new = tty_start; 154 tty_new.c_lflag &= ~(ICANON|ECHO); 155 tty_new.c_iflag |= ICRNL; 156 tty_new.c_cc[VMIN] = 1; 157 tty_new.c_cc[VTIME] = 0; 158 (void)tcsetattr(fileno(stdin), TCSADRAIN, &tty_new); 159 160 sa.sa_handler = update; 161 (void)sigemptyset(&sa.sa_mask); 162 (void)sigaddset(&sa.sa_mask, SIGALRM); 163 (void)sigaddset(&sa.sa_mask, SIGINT); 164 sa.sa_flags = 0; 165 (void)sigaction(SIGALRM, &sa, (struct sigaction *)0); 166 167 #ifdef BSD 168 itv.it_value.tv_sec = 0; 169 itv.it_value.tv_usec = 1; 170 itv.it_interval.tv_sec = sp->update_secs; 171 itv.it_interval.tv_usec = 0; 172 (void)setitimer(ITIMER_REAL, &itv, NULL); 173 #endif 174 #ifdef SYSV 175 alarm(sp->update_secs); 176 #endif 177 178 for (;;) { 179 if (getcommand() != 1) 180 planewin(); 181 else { 182 #ifdef BSD 183 itv.it_value.tv_sec = 0; 184 itv.it_value.tv_usec = 0; 185 (void)setitimer(ITIMER_REAL, &itv, NULL); 186 #endif 187 #ifdef SYSV 188 alarm(0); 189 #endif 190 191 update(0); 192 193 #ifdef BSD 194 itv.it_value.tv_sec = sp->update_secs; 195 itv.it_value.tv_usec = 0; 196 itv.it_interval.tv_sec = sp->update_secs; 197 itv.it_interval.tv_usec = 0; 198 (void)setitimer(ITIMER_REAL, &itv, NULL); 199 #endif 200 #ifdef SYSV 201 alarm(sp->update_secs); 202 #endif 203 } 204 } 205 } 206 207 int 208 read_file(const char *s) 209 { 210 int retval; 211 212 filename = s; 213 yyin = fopen(s, "r"); 214 if (yyin == NULL) { 215 warn("fopen %s", s); 216 return (-1); 217 } 218 retval = yyparse(); 219 (void)fclose(yyin); 220 221 if (retval != 0) 222 return (-1); 223 else 224 return (0); 225 } 226 227 const char * 228 default_game(void) 229 { 230 FILE *fp; 231 static char file[256]; 232 char line[256], games[256]; 233 234 (void)strlcpy(games, _PATH_GAMES, 256); 235 (void)strlcat(games, GAMES, 256); 236 237 if ((fp = fopen(games, "r")) == NULL) { 238 warn("fopen %s", games); 239 return (NULL); 240 } 241 if (fgets(line, sizeof(line), fp) == NULL) { 242 (void)fprintf(stderr, "%s: no default game available\n", games); 243 fclose(fp); 244 return (NULL); 245 } 246 (void)fclose(fp); 247 line[strlen(line) - 1] = '\0'; 248 (void)strlcpy(file, _PATH_GAMES, 256); 249 (void)strlcat(file, line, 256); 250 return (file); 251 } 252 253 const char * 254 okay_game(const char *s) 255 { 256 FILE *fp; 257 static char file[256]; 258 const char *ret = NULL; 259 char line[256], games[256]; 260 261 (void)strlcpy(games, _PATH_GAMES, 256); 262 (void)strlcat(games, GAMES, 256); 263 264 if ((fp = fopen(games, "r")) == NULL) { 265 warn("fopen %s", games); 266 return (NULL); 267 } 268 while (fgets(line, sizeof(line), fp) != NULL) { 269 line[strlen(line) - 1] = '\0'; 270 if (strcmp(s, line) == 0) { 271 (void)strlcpy(file, _PATH_GAMES, 256); 272 (void)strlcat(file, line, 256); 273 ret = file; 274 break; 275 } 276 } 277 (void)fclose(fp); 278 if (ret == NULL) { 279 test_mode = 1; 280 ret = s; 281 (void)fprintf(stderr, "%s: %s: game not found\n", games, s); 282 (void)fprintf(stderr, "Your score will not be logged.\n"); 283 (void)sleep(2); /* give the guy time to read it */ 284 } 285 return (ret); 286 } 287 288 int 289 list_games(void) 290 { 291 FILE *fp; 292 char line[256], games[256]; 293 int num_games = 0; 294 295 (void)strlcpy(games, _PATH_GAMES, 256); 296 (void)strlcat(games, GAMES, 256); 297 298 if ((fp = fopen(games, "r")) == NULL) { 299 warn("fopen %s", games); 300 return (-1); 301 } 302 (void)puts("available games:"); 303 while (fgets(line, sizeof(line), fp) != NULL) { 304 (void)printf(" %s", line); 305 num_games++; 306 } 307 (void)fclose(fp); 308 if (num_games == 0) { 309 (void)fprintf(stderr, "%s: no games available\n", games); 310 return (-1); 311 } 312 return (0); 313 } 314
Indexes created Tue Sep 30 20:09:53 GMT 2025