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
|
/*
* Copyright (c) 1997 - 2000, 2005 Kungliga Tekniska Högskolan
* (Royal Institute of Technology, Stockholm, Sweden).
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* 3. Neither the name of the Institute nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
RCSID("$Id: ui.c,v 1.4 2005/04/30 14:10:18 lha Exp $");
#endif
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <signal.h>
#include <termios.h>
#include <roken.h>
#include <des.h>
static sig_atomic_t intr_flag;
static void
intr(int sig)
{
intr_flag++;
}
static int
read_string(const char *preprompt, const char *prompt,
char *buf, size_t len, int echo)
{
struct sigaction sigs[47];
struct sigaction sa;
FILE *tty;
int ret = 0;
int of = 0;
int i;
int c;
char *p;
struct termios t_new, t_old;
memset(&sa, 0, sizeof(sa));
sa.sa_handler = intr;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
for(i = 0; i < sizeof(sigs) / sizeof(sigs[0]); i++)
if (i != SIGALRM) sigaction(i, &sa, &sigs[i]);
if((tty = fopen("/dev/tty", "r")) == NULL)
tty = stdin;
fprintf(stderr, "%s%s", preprompt, prompt);
fflush(stderr);
if(echo == 0){
tcgetattr(fileno(tty), &t_old);
memcpy(&t_new, &t_old, sizeof(t_new));
t_new.c_lflag &= ~ECHO;
tcsetattr(fileno(tty), TCSANOW, &t_new);
}
intr_flag = 0;
p = buf;
while(intr_flag == 0){
c = getc(tty);
if(c == EOF){
if(!ferror(tty))
ret = 1;
break;
}
if(c == '\n')
break;
if(of == 0)
*p++ = c;
of = (p == buf + len);
}
if(of)
p--;
*p = 0;
if(echo == 0){
printf("\n");
tcsetattr(fileno(tty), TCSANOW, &t_old);
}
if(tty != stdin)
fclose(tty);
for(i = 0; i < sizeof(sigs) / sizeof(sigs[0]); i++)
if (i != SIGALRM) sigaction(i, &sigs[i], NULL);
if(ret)
return -3;
if(intr_flag)
return -2;
if(of)
return -1;
return 0;
}
int
UI_UTIL_read_pw_string(char *buf, int length, const char *prompt, int verify)
{
int ret;
ret = read_string("", prompt, buf, length, 0);
if (ret)
return ret;
if (verify) {
char *buf2;
buf2 = malloc(length);
if (buf2 == NULL)
return 1;
ret = read_string("Verify password - ", prompt, buf2, length, 0);
if (ret) {
free(buf2);
return ret;
}
if (strcmp(buf2, buf) != 0)
ret = 1;
free(buf2);
}
return ret;
}
|
