1*00b67f09SDavid van Moolenbroek /* $NetBSD: keyboard.c,v 1.4 2014/12/10 04:38:01 christos Exp $ */
2*00b67f09SDavid van Moolenbroek
3*00b67f09SDavid van Moolenbroek /*
4*00b67f09SDavid van Moolenbroek * Copyright (C) 2004, 2007 Internet Systems Consortium, Inc. ("ISC")
5*00b67f09SDavid van Moolenbroek * Copyright (C) 2000, 2001 Internet Software Consortium.
6*00b67f09SDavid van Moolenbroek *
7*00b67f09SDavid van Moolenbroek * Permission to use, copy, modify, and/or distribute this software for any
8*00b67f09SDavid van Moolenbroek * purpose with or without fee is hereby granted, provided that the above
9*00b67f09SDavid van Moolenbroek * copyright notice and this permission notice appear in all copies.
10*00b67f09SDavid van Moolenbroek *
11*00b67f09SDavid van Moolenbroek * THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
12*00b67f09SDavid van Moolenbroek * REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
13*00b67f09SDavid van Moolenbroek * AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
14*00b67f09SDavid van Moolenbroek * INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
15*00b67f09SDavid van Moolenbroek * LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
16*00b67f09SDavid van Moolenbroek * OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
17*00b67f09SDavid van Moolenbroek * PERFORMANCE OF THIS SOFTWARE.
18*00b67f09SDavid van Moolenbroek */
19*00b67f09SDavid van Moolenbroek
20*00b67f09SDavid van Moolenbroek /* Id: keyboard.c,v 1.13 2007/06/19 23:47:18 tbox Exp */
21*00b67f09SDavid van Moolenbroek
22*00b67f09SDavid van Moolenbroek #include <config.h>
23*00b67f09SDavid van Moolenbroek
24*00b67f09SDavid van Moolenbroek #include <sys/param.h>
25*00b67f09SDavid van Moolenbroek #include <sys/types.h>
26*00b67f09SDavid van Moolenbroek #include <sys/time.h>
27*00b67f09SDavid van Moolenbroek #include <sys/uio.h>
28*00b67f09SDavid van Moolenbroek
29*00b67f09SDavid van Moolenbroek #include <errno.h>
30*00b67f09SDavid van Moolenbroek #include <stdlib.h>
31*00b67f09SDavid van Moolenbroek #include <string.h>
32*00b67f09SDavid van Moolenbroek #include <termios.h>
33*00b67f09SDavid van Moolenbroek #include <unistd.h>
34*00b67f09SDavid van Moolenbroek #include <fcntl.h>
35*00b67f09SDavid van Moolenbroek
36*00b67f09SDavid van Moolenbroek #include <isc/keyboard.h>
37*00b67f09SDavid van Moolenbroek #include <isc/util.h>
38*00b67f09SDavid van Moolenbroek
39*00b67f09SDavid van Moolenbroek isc_result_t
isc_keyboard_open(isc_keyboard_t * keyboard)40*00b67f09SDavid van Moolenbroek isc_keyboard_open(isc_keyboard_t *keyboard) {
41*00b67f09SDavid van Moolenbroek int fd;
42*00b67f09SDavid van Moolenbroek isc_result_t ret;
43*00b67f09SDavid van Moolenbroek struct termios current_mode;
44*00b67f09SDavid van Moolenbroek
45*00b67f09SDavid van Moolenbroek REQUIRE(keyboard != NULL);
46*00b67f09SDavid van Moolenbroek
47*00b67f09SDavid van Moolenbroek fd = open("/dev/tty", O_RDONLY, 0);
48*00b67f09SDavid van Moolenbroek if (fd < 0)
49*00b67f09SDavid van Moolenbroek return (ISC_R_IOERROR);
50*00b67f09SDavid van Moolenbroek
51*00b67f09SDavid van Moolenbroek keyboard->fd = fd;
52*00b67f09SDavid van Moolenbroek
53*00b67f09SDavid van Moolenbroek if (tcgetattr(fd, &keyboard->saved_mode) < 0) {
54*00b67f09SDavid van Moolenbroek ret = ISC_R_IOERROR;
55*00b67f09SDavid van Moolenbroek goto errout;
56*00b67f09SDavid van Moolenbroek }
57*00b67f09SDavid van Moolenbroek
58*00b67f09SDavid van Moolenbroek current_mode = keyboard->saved_mode;
59*00b67f09SDavid van Moolenbroek
60*00b67f09SDavid van Moolenbroek current_mode.c_iflag &=
61*00b67f09SDavid van Moolenbroek ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
62*00b67f09SDavid van Moolenbroek current_mode.c_oflag &= ~OPOST;
63*00b67f09SDavid van Moolenbroek current_mode.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
64*00b67f09SDavid van Moolenbroek current_mode.c_cflag &= ~(CSIZE|PARENB);
65*00b67f09SDavid van Moolenbroek current_mode.c_cflag |= CS8;
66*00b67f09SDavid van Moolenbroek
67*00b67f09SDavid van Moolenbroek current_mode.c_cc[VMIN] = 1;
68*00b67f09SDavid van Moolenbroek current_mode.c_cc[VTIME] = 0;
69*00b67f09SDavid van Moolenbroek if (tcsetattr(fd, TCSAFLUSH, ¤t_mode) < 0) {
70*00b67f09SDavid van Moolenbroek ret = ISC_R_IOERROR;
71*00b67f09SDavid van Moolenbroek goto errout;
72*00b67f09SDavid van Moolenbroek }
73*00b67f09SDavid van Moolenbroek
74*00b67f09SDavid van Moolenbroek keyboard->result = ISC_R_SUCCESS;
75*00b67f09SDavid van Moolenbroek
76*00b67f09SDavid van Moolenbroek return (ISC_R_SUCCESS);
77*00b67f09SDavid van Moolenbroek
78*00b67f09SDavid van Moolenbroek errout:
79*00b67f09SDavid van Moolenbroek close (fd);
80*00b67f09SDavid van Moolenbroek
81*00b67f09SDavid van Moolenbroek return (ret);
82*00b67f09SDavid van Moolenbroek }
83*00b67f09SDavid van Moolenbroek
84*00b67f09SDavid van Moolenbroek isc_result_t
isc_keyboard_close(isc_keyboard_t * keyboard,unsigned int sleeptime)85*00b67f09SDavid van Moolenbroek isc_keyboard_close(isc_keyboard_t *keyboard, unsigned int sleeptime) {
86*00b67f09SDavid van Moolenbroek REQUIRE(keyboard != NULL);
87*00b67f09SDavid van Moolenbroek
88*00b67f09SDavid van Moolenbroek if (sleeptime > 0 && keyboard->result != ISC_R_CANCELED)
89*00b67f09SDavid van Moolenbroek (void)sleep(sleeptime);
90*00b67f09SDavid van Moolenbroek
91*00b67f09SDavid van Moolenbroek (void)tcsetattr(keyboard->fd, TCSAFLUSH, &keyboard->saved_mode);
92*00b67f09SDavid van Moolenbroek (void)close(keyboard->fd);
93*00b67f09SDavid van Moolenbroek
94*00b67f09SDavid van Moolenbroek keyboard->fd = -1;
95*00b67f09SDavid van Moolenbroek
96*00b67f09SDavid van Moolenbroek return (ISC_R_SUCCESS);
97*00b67f09SDavid van Moolenbroek }
98*00b67f09SDavid van Moolenbroek
99*00b67f09SDavid van Moolenbroek isc_result_t
isc_keyboard_getchar(isc_keyboard_t * keyboard,unsigned char * cp)100*00b67f09SDavid van Moolenbroek isc_keyboard_getchar(isc_keyboard_t *keyboard, unsigned char *cp) {
101*00b67f09SDavid van Moolenbroek ssize_t cc;
102*00b67f09SDavid van Moolenbroek unsigned char c;
103*00b67f09SDavid van Moolenbroek cc_t *controlchars;
104*00b67f09SDavid van Moolenbroek
105*00b67f09SDavid van Moolenbroek REQUIRE(keyboard != NULL);
106*00b67f09SDavid van Moolenbroek REQUIRE(cp != NULL);
107*00b67f09SDavid van Moolenbroek
108*00b67f09SDavid van Moolenbroek cc = read(keyboard->fd, &c, 1);
109*00b67f09SDavid van Moolenbroek if (cc < 0) {
110*00b67f09SDavid van Moolenbroek keyboard->result = ISC_R_IOERROR;
111*00b67f09SDavid van Moolenbroek return (keyboard->result);
112*00b67f09SDavid van Moolenbroek }
113*00b67f09SDavid van Moolenbroek
114*00b67f09SDavid van Moolenbroek controlchars = keyboard->saved_mode.c_cc;
115*00b67f09SDavid van Moolenbroek if (c == controlchars[VINTR] || c == controlchars[VQUIT]) {
116*00b67f09SDavid van Moolenbroek keyboard->result = ISC_R_CANCELED;
117*00b67f09SDavid van Moolenbroek return (keyboard->result);
118*00b67f09SDavid van Moolenbroek }
119*00b67f09SDavid van Moolenbroek
120*00b67f09SDavid van Moolenbroek *cp = c;
121*00b67f09SDavid van Moolenbroek
122*00b67f09SDavid van Moolenbroek return (ISC_R_SUCCESS);
123*00b67f09SDavid van Moolenbroek }
124*00b67f09SDavid van Moolenbroek
125*00b67f09SDavid van Moolenbroek isc_boolean_t
isc_keyboard_canceled(isc_keyboard_t * keyboard)126*00b67f09SDavid van Moolenbroek isc_keyboard_canceled(isc_keyboard_t *keyboard) {
127*00b67f09SDavid van Moolenbroek return (ISC_TF(keyboard->result == ISC_R_CANCELED));
128*00b67f09SDavid van Moolenbroek }
129