2
* Copyright (C) 2004, 2007 Internet Systems Consortium, Inc. ("ISC")
3
* Copyright (C) 2000, 2001 Internet Software Consortium.
5
* Permission to use, copy, modify, and/or distribute this software for any
6
* purpose with or without fee is hereby granted, provided that the above
7
* copyright notice and this permission notice appear in all copies.
9
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
10
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
11
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
12
* INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
13
* LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE
14
* OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
15
* PERFORMANCE OF THIS SOFTWARE.
18
/* $Id: keyboard.c,v 1.13 2007/06/19 23:47:18 tbox Exp $ */
22
#include <sys/param.h>
23
#include <sys/types.h>
34
#include <isc/keyboard.h>
38
isc_keyboard_open(isc_keyboard_t *keyboard) {
41
struct termios current_mode;
43
REQUIRE(keyboard != NULL);
45
fd = open("/dev/tty", O_RDONLY, 0);
47
return (ISC_R_IOERROR);
51
if (tcgetattr(fd, &keyboard->saved_mode) < 0) {
56
current_mode = keyboard->saved_mode;
58
current_mode.c_iflag &=
59
~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
60
current_mode.c_oflag &= ~OPOST;
61
current_mode.c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
62
current_mode.c_cflag &= ~(CSIZE|PARENB);
63
current_mode.c_cflag |= CS8;
65
current_mode.c_cc[VMIN] = 1;
66
current_mode.c_cc[VTIME] = 0;
67
if (tcsetattr(fd, TCSAFLUSH, ¤t_mode) < 0) {
72
keyboard->result = ISC_R_SUCCESS;
74
return (ISC_R_SUCCESS);
83
isc_keyboard_close(isc_keyboard_t *keyboard, unsigned int sleeptime) {
84
REQUIRE(keyboard != NULL);
86
if (sleeptime > 0 && keyboard->result != ISC_R_CANCELED)
87
(void)sleep(sleeptime);
89
(void)tcsetattr(keyboard->fd, TCSAFLUSH, &keyboard->saved_mode);
90
(void)close(keyboard->fd);
94
return (ISC_R_SUCCESS);
98
isc_keyboard_getchar(isc_keyboard_t *keyboard, unsigned char *cp) {
103
REQUIRE(keyboard != NULL);
106
cc = read(keyboard->fd, &c, 1);
108
keyboard->result = ISC_R_IOERROR;
109
return (keyboard->result);
112
controlchars = keyboard->saved_mode.c_cc;
113
if (c == controlchars[VINTR] || c == controlchars[VQUIT]) {
114
keyboard->result = ISC_R_CANCELED;
115
return (keyboard->result);
120
return (ISC_R_SUCCESS);
124
isc_keyboard_canceled(isc_keyboard_t *keyboard) {
125
return (ISC_TF(keyboard->result == ISC_R_CANCELED));