1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
|
/*
* Copyright (c) 2009 Todd C. Miller <Todd.Miller@courtesan.com>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <config.h>
#include <sys/types.h>
#include <sys/param.h>
#include <stdio.h>
#ifdef STDC_HEADERS
# include <stdlib.h>
# include <stddef.h>
#else
# ifdef HAVE_STDLIB_H
# include <stdlib.h>
# endif
#endif /* STDC_HEADERS */
#ifdef HAVE_STRING_H
# if defined(HAVE_MEMORY_H) && !defined(STDC_HEADERS)
# include <memory.h>
# endif
# include <string.h>
#else
# ifdef HAVE_STRINGS_H
# include <strings.h>
# endif
#endif /* HAVE_STRING_H */
#ifdef HAVE_TERMIOS_H
# include <termios.h>
#else
# ifdef HAVE_TERMIO_H
# include <termio.h>
# else
# include <sgtty.h>
# include <sys/ioctl.h>
# endif /* HAVE_TERMIO_H */
#endif /* HAVE_TERMIOS_H */
#include "sudo.h"
#ifndef lint
__unused static const char rcsid[] = "$Sudo: term.c,v 1.4 2009/02/25 10:47:12 millert Exp $";
#endif /* lint */
#ifndef TCSASOFT
# define TCSASOFT 0
#endif
#ifndef ECHONL
# define ECHONL 0
#endif
#ifndef IEXTEN
# define IEXTEN 0
#endif
#ifndef _POSIX_VDISABLE
# ifdef VDISABLE
# define _POSIX_VDISABLE VDISABLE
# else
# define _POSIX_VDISABLE 0
# endif
#endif
/*
* Compat macros for non-termios systems.
*/
#ifndef HAVE_TERMIOS_H
# ifdef HAVE_TERMIO_H
# undef termios
# define termios termio
# define tcgetattr(f, t) ioctl(f, TCGETA, t)
# define tcsetattr(f, a, t) ioctl(f, a, t)
# undef TCSAFLUSH
# define TCSAFLUSH TCSETAF
# else /* SGTTY */
# undef termios
# define termios sgttyb
# define c_lflag sg_flags
# define tcgetattr(f, t) ioctl(f, TIOCGETP, t)
# define tcsetattr(f, a, t) ioctl(f, a, t)
# undef TCSAFLUSH
# define TCSAFLUSH TIOCSETP
# endif /* HAVE_TERMIO_H */
#endif /* HAVE_TERMIOS_H */
typedef struct termios sudo_term_t;
static sudo_term_t term, oterm;
static int changed;
int term_erase;
int term_kill;
int
term_restore(fd)
int fd;
{
if (changed) {
if (tcsetattr(fd, TCSAFLUSH|TCSASOFT, &oterm) != 0)
return(0);
changed = 0;
}
return(1);
}
int
term_noecho(fd)
int fd;
{
if (!changed && tcgetattr(fd, &oterm) != 0)
return(0);
(void) memcpy(&term, &oterm, sizeof(term));
CLR(term.c_lflag, ECHO|ECHONL);
#ifdef VSTATUS
term.c_cc[VSTATUS] = _POSIX_VDISABLE;
#endif
if (tcsetattr(fd, TCSAFLUSH|TCSASOFT, &term) == 0) {
changed = 1;
return(1);
}
return(0);
}
#if defined(HAVE_TERMIOS_H) || defined(HAVE_TERMIO_H)
int
term_raw(fd)
int fd;
{
if (!changed && tcgetattr(fd, &oterm) != 0)
return(0);
(void) memcpy(&term, &oterm, sizeof(term));
/* Set terminal to half-cooked mode */
term.c_cc[VMIN] = 1;
term.c_cc[VTIME] = 0;
CLR(term.c_lflag, ECHO | ECHONL | ICANON | IEXTEN);
SET(term.c_lflag, ISIG);
#ifdef VSTATUS
term.c_cc[VSTATUS] = _POSIX_VDISABLE;
#endif
if (tcsetattr(fd, TCSAFLUSH|TCSASOFT, &term) == 0) {
term_erase = term.c_cc[VERASE];
term_kill = term.c_cc[VKILL];
changed = 1;
return(1);
}
return(0);
}
#else /* SGTTY */
int
term_raw(fd)
int fd;
{
if (!changed && ioctl(fd, TIOCGETP, &oterm) != 0)
return(0);
(void) memcpy(&term, &oterm, sizeof(term));
/* Set terminal to half-cooked mode */
CLR(term.c_lflag, ECHO);
SET(term.sg_flags, CBREAK);
if (ioctl(fd, TIOCSETP, &term) == 0) {
term_erase = term.sg_erase;
term_kill = term.sg_kill;
changed = 1;
return(1);
}
return(0);
}
#endif
|
