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
main(int argc __unused,char * argv[])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
leave(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