main.c revision 1.9
1 /* $NetBSD: main.c,v 1.9 1999/07/17 19:57:03 hubertf 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 1.9 1999/07/17 19:57:03 hubertf Exp $"); 59 #endif 60 #endif /* not lint */ 61 62 #include "include.h" 63 #include "pathnames.h" 64 65 66 int 67 main(ac, av) 68 int ac; 69 char *av[]; 70 { 71 int seed; 72 int f_usage = 0, f_list = 0, f_showscore = 0; 73 int f_printpath = 0; 74 const char *file = NULL; 75 char *name, *ptr; 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 setregid(getgid(), getgid()); 84 85 start_time = seed = time(0); 86 87 name = *av++; 88 while (*av) { 89 #ifndef SAVEDASH 90 if (**av == '-') 91 ++*av; 92 else 93 break; 94 #endif 95 ptr = *av++; 96 while (*ptr) { 97 switch (*ptr) { 98 case '?': 99 case 'u': 100 f_usage++; 101 break; 102 case 'l': 103 f_list++; 104 break; 105 case 's': 106 case 't': 107 f_showscore++; 108 break; 109 case 'p': 110 f_printpath++; 111 break; 112 case 'r': 113 seed = atoi(*av); 114 av++; 115 break; 116 case 'f': 117 case 'g': 118 file = *av; 119 av++; 120 break; 121 default: 122 warnx("unknown option '%c'\n", *ptr); 123 f_usage++; 124 break; 125 } 126 ptr++; 127 } 128 } 129 srandom(seed); 130 131 if (f_usage) 132 fprintf(stderr, 133 "Usage: %s -[u?lstp] [-[gf] game_name] [-r random seed]\n", 134 name); 135 if (f_showscore) 136 log_score(1); 137 if (f_list) 138 list_games(); 139 if (f_printpath) { 140 char buf[100]; 141 142 strcpy(buf, _PATH_GAMES); 143 buf[strlen(buf) - 1] = '\0'; 144 puts(buf); 145 } 146 147 if (f_usage || f_showscore || f_list || f_printpath) 148 exit(0); 149 150 if (file == NULL) 151 file = default_game(); 152 else 153 file = okay_game(file); 154 155 if (file == NULL || read_file(file) < 0) 156 exit(1); 157 158 init_gr(); 159 setup_screen(sp); 160 161 addplane(); 162 163 signal(SIGINT, quit); 164 signal(SIGQUIT, quit); 165 #ifdef BSD 166 signal(SIGTSTP, SIG_IGN); 167 signal(SIGSTOP, SIG_IGN); 168 #endif 169 signal(SIGHUP, log_score_quit); 170 signal(SIGTERM, log_score_quit); 171 172 tcgetattr(fileno(stdin), &tty_start); 173 tty_new = tty_start; 174 tty_new.c_lflag &= ~(ICANON|ECHO); 175 tty_new.c_iflag |= ICRNL; 176 tty_new.c_cc[VMIN] = 1; 177 tty_new.c_cc[VTIME] = 0; 178 tcsetattr(fileno(stdin), TCSADRAIN, &tty_new); 179 180 sa.sa_handler = update; 181 sigemptyset(&sa.sa_mask); 182 sigaddset(&sa.sa_mask, SIGALRM); 183 sigaddset(&sa.sa_mask, SIGINT); 184 sa.sa_flags = 0; 185 sigaction(SIGALRM, &sa, (struct sigaction *)0); 186 187 #ifdef BSD 188 itv.it_value.tv_sec = 0; 189 itv.it_value.tv_usec = 1; 190 itv.it_interval.tv_sec = sp->update_secs; 191 itv.it_interval.tv_usec = 0; 192 setitimer(ITIMER_REAL, &itv, NULL); 193 #endif 194 #ifdef SYSV 195 alarm(sp->update_secs); 196 #endif 197 198 for (;;) { 199 if (getcommand() != 1) 200 planewin(); 201 else { 202 #ifdef BSD 203 itv.it_value.tv_sec = 0; 204 itv.it_value.tv_usec = 0; 205 setitimer(ITIMER_REAL, &itv, NULL); 206 #endif 207 #ifdef SYSV 208 alarm(0); 209 #endif 210 211 update(0); 212 213 #ifdef BSD 214 itv.it_value.tv_sec = sp->update_secs; 215 itv.it_value.tv_usec = 0; 216 itv.it_interval.tv_sec = sp->update_secs; 217 itv.it_interval.tv_usec = 0; 218 setitimer(ITIMER_REAL, &itv, NULL); 219 #endif 220 #ifdef SYSV 221 alarm(sp->update_secs); 222 #endif 223 } 224 } 225 } 226 227 int 228 read_file(s) 229 const char *s; 230 { 231 extern FILE *yyin; 232 int retval; 233 234 file = s; 235 yyin = fopen(s, "r"); 236 if (yyin == NULL) { 237 warn("fopen %s", s); 238 return (-1); 239 } 240 retval = yyparse(); 241 fclose(yyin); 242 243 if (retval != 0) 244 return (-1); 245 else 246 return (0); 247 } 248 249 const char * 250 default_game() 251 { 252 FILE *fp; 253 static char file[256]; 254 char line[256], games[256]; 255 256 strcpy(games, _PATH_GAMES); 257 strcat(games, GAMES); 258 259 if ((fp = fopen(games, "r")) == NULL) { 260 warn("fopen %s", games); 261 return (NULL); 262 } 263 if (fgets(line, sizeof(line), fp) == NULL) { 264 fprintf(stderr, "%s: no default game available\n", games); 265 return (NULL); 266 } 267 fclose(fp); 268 line[strlen(line) - 1] = '\0'; 269 strcpy(file, _PATH_GAMES); 270 strcat(file, line); 271 return (file); 272 } 273 274 const char * 275 okay_game(s) 276 const char *s; 277 { 278 FILE *fp; 279 static char file[256]; 280 const char *ret = NULL; 281 char line[256], games[256]; 282 283 strcpy(games, _PATH_GAMES); 284 strcat(games, GAMES); 285 286 if ((fp = fopen(games, "r")) == NULL) { 287 warn("fopen %s", games); 288 return (NULL); 289 } 290 while (fgets(line, sizeof(line), fp) != NULL) { 291 line[strlen(line) - 1] = '\0'; 292 if (strcmp(s, line) == 0) { 293 strcpy(file, _PATH_GAMES); 294 strcat(file, line); 295 ret = file; 296 break; 297 } 298 } 299 fclose(fp); 300 if (ret == NULL) { 301 test_mode = 1; 302 ret = s; 303 fprintf(stderr, "%s: %s: game not found\n", games, s); 304 fprintf(stderr, "Your score will not be logged.\n"); 305 sleep(2); /* give the guy time to read it */ 306 } 307 return (ret); 308 } 309 310 int 311 list_games() 312 { 313 FILE *fp; 314 char line[256], games[256]; 315 int num_games = 0; 316 317 strcpy(games, _PATH_GAMES); 318 strcat(games, GAMES); 319 320 if ((fp = fopen(games, "r")) == NULL) { 321 warn("fopen %s", games); 322 return (-1); 323 } 324 puts("available games:"); 325 while (fgets(line, sizeof(line), fp) != NULL) { 326 printf(" %s", line); 327 num_games++; 328 } 329 fclose(fp); 330 if (num_games == 0) { 331 fprintf(stderr, "%s: no games available\n", games); 332 return (-1); 333 } 334 return (0); 335 } 336
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