1 /* $OpenBSD: print.c,v 1.16 2017/04/28 22:16:43 millert Exp $ */
2 /* $NetBSD: print.c,v 1.11 1996/05/07 18:20:10 jtc Exp $ */
3
4 /*-
5 * Copyright (c) 1991, 1993, 1994
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 <sys/types.h>
34
35 #include <stddef.h>
36 #include <stdio.h>
37 #include <string.h>
38 #include <termios.h>
39
40 #include "stty.h"
41 #include "extern.h"
42
43 static void binit(char *);
44 static void bput(const char *, unsigned int);
45 static char *ccval(const struct cchar *, int);
46
47 void
print(struct termios * tp,struct winsize * wp,int ldisc,enum FMT fmt)48 print(struct termios *tp, struct winsize *wp, int ldisc, enum FMT fmt)
49 {
50 const struct cchar *p;
51 long tmp;
52 u_char *cc;
53 int cnt, ispeed, ospeed;
54 char buf1[100], buf2[100];
55
56 cnt = 0;
57
58 /* Line discipline. */
59 if (ldisc != TTYDISC) {
60 switch(ldisc) {
61 case PPPDISC:
62 cnt += printf("ppp disc; ");
63 break;
64 case NMEADISC:
65 cnt += printf("nmea disc; ");
66 break;
67 default:
68 cnt += printf("#%d disc; ", ldisc);
69 break;
70 }
71 }
72
73 /* Line speed. */
74 ispeed = cfgetispeed(tp);
75 ospeed = cfgetospeed(tp);
76 if (ispeed != ospeed)
77 cnt +=
78 printf("ispeed %d baud; ospeed %d baud;", ispeed, ospeed);
79 else
80 cnt += printf("speed %d baud;", ispeed);
81 if (fmt >= BSD)
82 cnt += printf(" %d rows; %d columns;", wp->ws_row, wp->ws_col);
83 if (cnt)
84 (void)printf("\n");
85
86 #define on(f) ((tmp&f) != 0)
87 #define put(n, f, d) \
88 if (fmt >= BSD || on(f) != d) \
89 bput(n, on(f));
90
91 /* "local" flags */
92 tmp = tp->c_lflag;
93 binit("lflags");
94 put("-icanon", ICANON, 1);
95 put("-isig", ISIG, 1);
96 put("-iexten", IEXTEN, 1);
97 put("-echo", ECHO, 1);
98 put("-echoe", ECHOE, 0);
99 put("-echok", ECHOK, 0);
100 put("-echoke", ECHOKE, 0);
101 put("-echonl", ECHONL, 0);
102 put("-echoctl", ECHOCTL, 0);
103 put("-echoprt", ECHOPRT, 0);
104 put("-altwerase", ALTWERASE, 0);
105 put("-noflsh", NOFLSH, 0);
106 put("-tostop", TOSTOP, 0);
107 put("-flusho", FLUSHO, 0);
108 put("-pendin", PENDIN, 0);
109 put("-nokerninfo", NOKERNINFO, 0);
110 put("-extproc", EXTPROC, 0);
111 put("-xcase", XCASE, 0);
112
113 /* input flags */
114 tmp = tp->c_iflag;
115 binit("iflags");
116 put("-istrip", ISTRIP, 0);
117 put("-icrnl", ICRNL, 1);
118 put("-inlcr", INLCR, 0);
119 put("-igncr", IGNCR, 0);
120 put("-iuclc", IUCLC, 0);
121 put("-ixon", IXON, 1);
122 put("-ixoff", IXOFF, 0);
123 put("-ixany", IXANY, 1);
124 put("-imaxbel", IMAXBEL, 1);
125 put("-ignbrk", IGNBRK, 0);
126 put("-brkint", BRKINT, 1);
127 put("-inpck", INPCK, 0);
128 put("-ignpar", IGNPAR, 0);
129 put("-parmrk", PARMRK, 0);
130
131 /* output flags */
132 tmp = tp->c_oflag;
133 binit("oflags");
134 put("-opost", OPOST, 1);
135 put("-onlcr", ONLCR, 1);
136 put("-ocrnl", OCRNL, 0);
137 put("-onocr", ONOCR, 0);
138 put("-onlret", ONLRET, 0);
139 put("-olcuc", OLCUC, 0);
140 put("-oxtabs", OXTABS, 1);
141 put("-onoeot", ONOEOT, 0);
142
143 /* control flags (hardware state) */
144 tmp = tp->c_cflag;
145 binit("cflags");
146 put("-cread", CREAD, 1);
147 switch(tmp&CSIZE) {
148 case CS5:
149 bput("cs5", 0);
150 break;
151 case CS6:
152 bput("cs6", 0);
153 break;
154 case CS7:
155 bput("cs7", 0);
156 break;
157 case CS8:
158 bput("cs8", 0);
159 break;
160 }
161 bput("-parenb", on(PARENB));
162 put("-parodd", PARODD, 0);
163 put("-hupcl", HUPCL, 1);
164 put("-clocal", CLOCAL, 0);
165 put("-cstopb", CSTOPB, 0);
166 put("-crtscts", CRTSCTS, 0);
167 put("-mdmbuf", MDMBUF, 0);
168
169 /* special control characters */
170 cc = tp->c_cc;
171 if (fmt == POSIX) {
172 binit("cchars");
173 for (p = cchars1; p->name; ++p) {
174 (void)snprintf(buf1, sizeof(buf1), "%s = %s;",
175 p->name, ccval(p, cc[p->sub]));
176 bput(buf1, 0);
177 }
178 binit(NULL);
179 } else {
180 binit(NULL);
181 for (p = cchars1, cnt = 0; p->name; ++p) {
182 if (fmt != BSD && cc[p->sub] == p->def)
183 continue;
184 #define WD "%-8s"
185 (void)snprintf(buf1 + cnt * 8, sizeof(buf1) - cnt * 8,
186 WD, p->name);
187 (void)snprintf(buf2 + cnt * 8, sizeof(buf2) - cnt * 8,
188 WD, ccval(p, cc[p->sub]));
189 if (++cnt == LINELENGTH / 8) {
190 cnt = 0;
191 (void)printf("%s\n", buf1);
192 (void)printf("%s\n", buf2);
193 }
194 }
195 if (cnt) {
196 (void)printf("%s\n", buf1);
197 (void)printf("%s\n", buf2);
198 }
199 }
200 }
201
202 static int col;
203 static char *label;
204
205 static void
binit(char * lb)206 binit(char *lb)
207 {
208
209 if (col) {
210 (void)printf("\n");
211 col = 0;
212 }
213 label = lb;
214 }
215
216 static void
bput(const char * s,unsigned int off)217 bput(const char *s, unsigned int off)
218 {
219 s += off;
220
221 if (col == 0) {
222 col = printf("%s: %s", label, s);
223 return;
224 }
225 if ((col + strlen(s)) > LINELENGTH) {
226 (void)printf("\n\t");
227 col = printf("%s", s) + 8;
228 return;
229 }
230 col += printf(" %s", s);
231 }
232
233 static char *
ccval(const struct cchar * p,int c)234 ccval(const struct cchar *p, int c)
235 {
236 static char buf[5];
237 char *bp;
238
239 if (p->sub == VMIN || p->sub == VTIME) {
240 (void)snprintf(buf, sizeof(buf), "%d", c);
241 return (buf);
242 }
243 if (c == _POSIX_VDISABLE)
244 return ("<undef>");
245 bp = buf;
246 if (c & 0200) {
247 *bp++ = 'M';
248 *bp++ = '-';
249 c &= 0177;
250 }
251 if (c == 0177) {
252 *bp++ = '^';
253 *bp++ = '?';
254 }
255 else if (c < 040) {
256 *bp++ = '^';
257 *bp++ = c + '@';
258 }
259 else
260 *bp++ = c;
261 *bp = '\0';
262 return (buf);
263 }
264