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
|
/* pwcmp/module.c - Password comparison module base code
* Copyright (C) 2001 Bruce Guenter <bruce@untroubled.org>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <string.h>
#include <unistd.h>
#include "module.h"
static char buf[4096];
static unsigned buflen;
static unsigned bufpos;
static const char* plain;
static const char* encod;
static int do_read(void)
{
if (bufpos) {
memmove(buf, buf+bufpos, buflen-bufpos);
buflen -= bufpos;
}
while (buflen < sizeof buf) {
const char* tmp;
unsigned long rd;
if (buflen) {
if ((tmp = memchr(buf, 0, buflen)) != 0) {
unsigned len;
plain = buf;
encod = tmp + 1;
len = encod - buf;
if ((tmp = memchr(encod, 0, buflen - len)) != 0) {
++tmp;
bufpos = tmp - buf;
return 1;
}
}
}
if ((rd = read(0, buf + buflen, sizeof buf - buflen)) == 0 ||
rd == (unsigned long)-1)
break;
buflen += rd;
}
return 0;
}
int main(void)
{
while (do_read()) {
char tmp[1];
tmp[0] = pwcmp_check(plain, encod) ? 1 : 0;
if (write(1, tmp, 1) != 1) break;
}
return 1;
}
|
