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
|
/*
* Copyright (C) 2011-2012 Reto Guadagnini
* Hochschule fuer Technik Rapperswil
*
* 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. See <http://www.fsf.org/copyleft/gpl.txt>.
*
* 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.
*/
#include <stdio.h>
#include <library.h>
int main(int argc, char *argv[])
{
resolver_t *resolver;
resolver_response_t *response;
enumerator_t *enumerator;
rr_set_t *rrset;
rr_t *rr;
chunk_t chunk;
library_init(NULL);
atexit(library_deinit);
if (!lib->plugins->load(lib->plugins, NULL, PLUGINS))
{
return 1;
}
if (argc != 2)
{
fprintf(stderr, "usage: %s <name>\n", argv[0]);
return 1;
}
resolver = lib->resolver->create(lib->resolver);
if (!resolver)
{
printf("failed to create a resolver!\n");
return 1;
}
response = resolver->query(resolver, argv[1], RR_CLASS_IN, RR_TYPE_A);
if (!response)
{
printf("no response received!\n");
resolver->destroy(resolver);
return 1;
}
printf("DNS response:\n");
if (!response->has_data(response) || !response->query_name_exist(response))
{
if (!response->has_data(response))
{
printf(" no data in the response\n");
}
if (!response->query_name_exist(response))
{
printf(" query name does not exist\n");
}
response->destroy(response);
resolver->destroy(resolver);
return 1;
}
printf(" RRs in the response:\n");
rrset = response->get_rr_set(response);
if (!rrset)
{
printf(" response contains no RRset!\n");
response->destroy(response);
resolver->destroy(resolver);
return 1;
}
enumerator = rrset->create_rr_enumerator(rrset);
while (enumerator->enumerate(enumerator, &rr))
{
printf(" name: ");
printf(rr->get_name(rr));
printf("\n");
}
enumerator = rrset->create_rrsig_enumerator(rrset);
if (enumerator)
{
printf(" RRSIGs for the RRset:\n");
while (enumerator->enumerate(enumerator, &rr))
{
printf(" name: ");
printf(rr->get_name(rr));
printf("\n RDATA: ");
chunk = rr->get_rdata(rr);
chunk = chunk_to_hex(chunk, NULL, TRUE);
printf(chunk.ptr);
printf("\n");
}
}
printf(" security status of the response: ");
switch (response->get_security_state(response))
{
case SECURE:
printf("SECURE\n\n");
break;
case INSECURE:
printf("INSECURE\n\n");
break;
case BOGUS:
printf("BOGUS\n\n");
break;
case INDETERMINATE:
printf("INDETERMINATE\n\n");
break;
}
response->destroy(response);
resolver->destroy(resolver);
return 0;
}
|
