1 |
#include <stdio.h> |
2 |
#include <unistd.h> |
3 |
#include <string.h> |
4 |
#include <errno.h> |
5 |
#include <termios.h> |
6 |
|
7 |
#include "config.h" |
8 |
#include "imapfilter.h" |
9 |
|
10 |
|
11 |
extern unsigned int flags; |
12 |
|
13 |
static struct termios otio, ntio; /* Original and new tty settings. */ |
14 |
|
15 |
|
16 |
/* |
17 |
* Store original term attributes. |
18 |
*/ |
19 |
int tty_store(void) |
20 |
{ |
21 |
if (isatty(fileno(stdin))) |
22 |
flags |= FLAG_TTY; |
23 |
|
24 |
if (tcgetattr(fileno(stdin), &otio)) { |
25 |
error("imapfilter: getting term attributes; %s\n", strerror(errno)); |
26 |
return ERROR_TERMIO; |
27 |
} |
28 |
return 0; |
29 |
} |
30 |
|
31 |
|
32 |
/* |
33 |
* Disable echo. |
34 |
*/ |
35 |
int tty_disable_echo(void) |
36 |
{ |
37 |
if (!(flags & FLAG_TTY)) |
38 |
return 0; |
39 |
|
40 |
ntio = otio; |
41 |
ntio.c_lflag &= ~(ECHO | ECHOE | ECHOK | ECHONL); |
42 |
|
43 |
flags |= FLAG_TTY_MODIFIED; |
44 |
|
45 |
if (tcsetattr(fileno(stdin), TCSAFLUSH, &ntio)) { |
46 |
error("imapfilter: setting term attributes; %s\n", strerror(errno)); |
47 |
return ERROR_TERMIO; |
48 |
} |
49 |
return 0; |
50 |
} |
51 |
|
52 |
|
53 |
/* |
54 |
* Restore original term attributes. |
55 |
*/ |
56 |
int tty_restore(void) |
57 |
{ |
58 |
if (!(flags & FLAG_TTY) || !(flags & FLAG_TTY_MODIFIED)) |
59 |
return 0; |
60 |
|
61 |
if (tcsetattr(fileno(stdin), TCSAFLUSH, &otio)) { |
62 |
error("imapfilter: setting term attributes; %s\n", strerror(errno)); |
63 |
return ERROR_TERMIO; |
64 |
} |
65 |
flags &= ~(FLAG_TTY_MODIFIED); |
66 |
|
67 |
return 0; |
68 |
} |