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
|
/* See LICENSE file for copyright and license details. */
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "arg.h"
#include "crypt.h"
char *argv0;
static void
usage(void)
{
fprintf(stderr, "usage: %s [crypt-parameters]\n", argv0);
exit(1);
}
int
main(int argc, char *argv[])
{
const char *parameters;
char *key = NULL, *new;
size_t key_len = 0;
size_t key_size = 0;
char *hash;
ssize_t r;
ARGBEGIN {
default:
usage();
} ARGEND;
if (argc > 1)
usage();
parameters = argv[0];
for (;;) {
if (key_len == key_size) {
new = malloc(1 + (key_size += 1024));
if (!new) {
explicit_bzero(key, key_len);
fprintf(stderr, "%s: read <stdin>: %s\n", argv0, strerror(errno));
exit(1);
}
memcpy(new, key, key_len);
explicit_bzero(key, key_len);
free(key);
key = new;
}
r = read(STDIN_FILENO, &key[key_len], key_size - key_len);
if (r <= 0) {
if (!r)
break;
explicit_bzero(key, key_len);
fprintf(stderr, "%s: read <stdin>: %s\n", argv0, strerror(errno));
exit(1);
}
key_len += (size_t)r;
}
hash = key2root_crypt(key, key_len, parameters, 1);
if (!hash)
exit(1);
free(key);
printf("%s\n", hash);
free(hash);
if (fflush(stdout) || ferror(stdout) || fclose(stdout)) {
fprintf(stderr, "%s: printf: %s\n", argv0, strerror(errno));
exit(1);
}
return 0;
}
|
