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
|
/* helper functions
*/
#include <stdarg.h>
#include "include/int80.h"
#include "include/unistd.h"
#include "helper.h"
void
memset (void *dst, unsigned char c, unsigned int len)
{
unsigned char * p = (unsigned char *) dst;
while (len--)
*p++ = c;
}
int
memcmp (void *dst, void *src, unsigned int len)
{
unsigned char * d = (unsigned char *) dst;
unsigned char * s = (unsigned char *) src;
while (len-- > 0) {
if (*d++ != *s++)
return (1);
}
return (0);
}
void
memcpy (void *dst, void *src, unsigned int len)
{
unsigned char * d = (unsigned char *) dst;
unsigned char * s = (unsigned char *) src;
while (len--)
*d++ = *s++;
}
int
strlen (unsigned char *str)
{
int n = 0;
while (*str++)
n++;
return (n);
}
#ifdef VDEBUG
void
be_printf (char *str, ...)
{
int len;
va_list vl;
char buf[1024];
va_start (vl, str);
len = vsnprintf (buf, sizeof (buf), str, vl);
va_end (vl);
buf[sizeof (buf) - 1] = '\0';
write (1, buf, len);
return;
}
#endif
/* based on the dietlibc version, which was ripped elsewhere ;) */
void
getpass (unsigned char *buf, unsigned int buf_len)
{
int tty_fd;
unsigned int buf_just,
buf_read = 0;
termios t_backup,
t_noecho;
tty_fd = open ("/dev/tty", O_RDWR, 0);
if (tty_fd < 0)
_exit (73);
/* set terminal to non-echo'ing mode */
if (ioctl (tty_fd, TCGETS, (unsigned long int) &t_backup) != 0)
_exit (73);
memcpy (&t_noecho, &t_backup, sizeof (t_backup));
t_noecho.c_lflag &= ~(ECHO | ISIG);
if (ioctl (tty_fd, TCSETSF, (unsigned long int) &t_noecho) != 0)
_exit (73);
write (tty_fd, "password: ", 10);
do {
buf_just = read (tty_fd, buf + buf_read, buf_len - buf_read);
if (buf_just < 0)
_exit (73);
buf_read += buf_just;
} while (buf_read < buf_len && buf[buf_read - 1] != '\n');
buf[buf_read > 0 ? (buf_read - 1) : 0] = '\0';
buf[buf_len - 1] = '\0';
write (tty_fd, "\n", 1);
if (ioctl (tty_fd, TCSETSF, (unsigned long int) &t_backup) != 0)
_exit (73);
close (tty_fd);
return;
}
void
write_tty (unsigned char *buf, unsigned int buf_len)
{
int tty_fd;
tty_fd = open ("/dev/tty", O_RDWR, 0);
if (tty_fd < 0)
return;
write (tty_fd, buf, buf_len);
close (tty_fd);
}
|
