opensc-sys 0.1.1

FFI bindings to OpenSC
Documentation 
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

#if HAVE_CONFIG_H
#include "config.h"
#endif

#ifndef HAVE_GETPASS	/* empty file if getpass is available */
#include <stdio.h>

#include "compat_getpass.h"

#ifdef _WIN32
#include <conio.h>
#else
#include <stdio.h>
#include <termios.h>
#include <unistd.h>

int _getch(void)
{
	struct termios old, mute;
	int c;

	tcgetattr(STDIN_FILENO, &old);
	mute = old;
	mute.c_lflag &= ~(ICANON|ECHO);

	if (0 != tcsetattr(STDIN_FILENO, TCSANOW, &mute)) {
		/* XXX an error happened */
		/* We prefer to print the password, i.e. ignore the error,
		 * rather than to deny the service, i.e. return something like '\0' */
	}

	c = getchar();

	tcsetattr(STDIN_FILENO, TCSANOW, &old);

	return c;
}
#endif

char *getpass(const char *prompt)
{
	static char buf[128];
	size_t i;

	fputs(prompt, stderr);
	fflush(stderr);
	for (i = 0; i < sizeof(buf) - 1; i++) {
		buf[i] = _getch();
		if (buf[i] == '\r')
			break;
	}
	buf[i] = 0;
	fputs("\n", stderr);
	return buf;
}
#endif	/* HAVE_GETPASS */