1 /* @(#)teach.c 8.1 (Berkeley) 5/31/93 */ 2 /* $NetBSD: teach.c,v 1.25 2019/02/03 03:19:25 mrg Exp $ */ 3 4 /* 5 * Copyright (c) 1980, 1993 6 * The Regents of the University of California. All rights reserved. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 3. Neither the name of the University nor the names of its contributors 17 * may be used to endorse or promote products derived from this software 18 * without specific prior written permission. 19 * 20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND 21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE 24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 30 * SUCH DAMAGE. 31 */ 32 33 #include "back.h" 34 #include "tutor.h" 35 36 static const char *const contin[] = { 37 "", 38 0 39 }; 40 41 int 42 main(int argc __unused, char *argv[]) 43 { 44 int i; 45 struct move mmstore, *mm; 46 47 /* revoke setgid privileges */ 48 setgid(getgid()); 49 50 signal(SIGINT, getout); 51 if (tcgetattr(0, &old) == -1) /* get old tty mode */ 52 errexit("teachgammon(gtty)"); 53 noech = old; 54 noech.c_lflag &= ~ECHO; 55 raw = noech; 56 raw.c_lflag &= ~ICANON; /* set up modes */ 57 ospeed = cfgetospeed(&old); /* for termlib */ 58 tflag = getcaps(getenv("TERM")); 59 60 /* need this now beceause getarg() may try to load a game */ 61 mm = &mmstore; 62 move_init(mm); 63 while (*++argv != 0) 64 getarg(mm, &argv); 65 if (tflag) { 66 noech.c_oflag &= ~(ONLCR | OXTABS); 67 raw.c_oflag &= ~(ONLCR | OXTABS); 68 clear(); 69 } 70 wrtext(hello); 71 wrtext(list); 72 i = wrtext(contin); 73 if (i == 0) 74 i = 2; 75 init(); 76 while (i) 77 switch (i) { 78 case 1: 79 leave(); 80 81 case 2: 82 if ((i = wrtext(intro1)) != 0) 83 break; 84 wrboard(); 85 if ((i = wrtext(intro2)) != 0) 86 break; 87 88 /* FALLTHROUGH */ 89 case 3: 90 if ((i = wrtext(moves)) != 0) 91 break; 92 93 /* FALLTHROUGH */ 94 case 4: 95 if ((i = wrtext(removepiece)) != 0) 96 break; 97 98 /* FALLTHROUGH */ 99 case 5: 100 if ((i = wrtext(hits)) != 0) 101 break; 102 103 /* FALLTHROUGH */ 104 case 6: 105 if ((i = wrtext(endgame)) != 0) 106 break; 107 108 /* FALLTHROUGH */ 109 case 7: 110 if ((i = wrtext(doubl)) != 0) 111 break; 112 113 /* FALLTHROUGH */ 114 case 8: 115 if ((i = wrtext(stragy)) != 0) 116 break; 117 118 /* FALLTHROUGH */ 119 case 9: 120 if ((i = wrtext(prog)) != 0) 121 break; 122 123 /* FALLTHROUGH */ 124 case 10: 125 if ((i = wrtext(lastch)) != 0) 126 break; 127 } 128 tutor(mm); 129 /* NOTREACHED */ 130 return (0); 131 } 132 133 void 134 leave(void) 135 { 136 if (tflag) 137 clear(); 138 else 139 writec('\n'); 140 fixtty(&old); 141 execl(EXEC, "backgammon", "-n", args[0]?args:0, (char *) 0); 142 writel("Help! Backgammon program is missing\007!!\n"); 143 exit(1); 144 } 145