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
|
/* $Id$ */
/***
This file is part of seppl
seppl 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.
seppl 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 seppl; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <getopt.h>
#include <iptables.h>
#include <linux/netfilter_ipv4/ip_tables.h>
#include "ipt_CRYPT.h"
/* Function which prints out usage message. */
static void help(void) {
printf("CRYPT options:\n"
" --algorithm algo Select algorithm\n"
" --key key Select key\n");
}
static struct option opts[] = {
{ "algorithm", 1, 0, 'a' },
{ "key", 1, 0, 'k' },
{ 0 }
};
static void init(struct ipt_entry_target *t, unsigned int *nfcache) {
struct ipt_crypt_info *crypt = (struct ipt_crypt_info *) t->data;
memset(crypt, 0, sizeof(struct ipt_crypt_info));
strncpy(crypt->name, "def", 7);
*nfcache |= NFC_UNKNOWN;
}
static int parse(int c, char **argv, int invert, unsigned int *flags, const struct ipt_entry *entry, struct ipt_entry_target **target) {
struct ipt_crypt_info *crypt = (struct ipt_crypt_info *)(*target)->data;
switch(c) {
case 'a':
crypt->algorithm = atoi(optarg);
return 1;
case 'k':
strncpy(crypt->name, optarg, 7);
return 1;
}
return 0;
}
static void final_check(unsigned int flags) {
}
static void print(const struct ipt_ip *ip, const struct ipt_entry_target *target, int numeric) {
const struct ipt_crypt_info *crypt = (const struct ipt_crypt_info *)target->data;
char txt[8];
strncpy(txt, crypt->name, 7);
txt[7] = 0;
printf("key: %s algo: %i\n", txt, crypt->algorithm);
}
static void save(const struct ipt_ip *ip, const struct ipt_entry_target *target) {
const struct ipt_crypt_info *crypt = (const struct ipt_crypt_info *)target->data;
char txt[8];
strncpy(txt, crypt->name, 7);
txt[7] = 0;
printf("--algorithm %i ", crypt->algorithm);
printf("--key '%s'", txt);
}
static struct iptables_target crypt = {
NULL,
"CRYPT",
IPTABLES_VERSION,
IPT_ALIGN(sizeof(struct ipt_crypt_info)),
IPT_ALIGN(sizeof(struct ipt_crypt_info)),
&help,
&init,
&parse,
&final_check,
&print,
&save,
opts
};
void _init(void) {
register_target(&crypt);
}
|
