1 #ifndef COLLECTD_UTILS_DNS_H
2 #define COLLECTD_UTILS_DNS_H 1
3 /*
4 * collectd - src/utils_dns.h
5 * Copyright (C) 2006 Florian octo Forster
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are met:
10 *
11 * 1. Redistributions of source code must retain the above copyright notice,
12 * this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright notice,
14 * this list of conditions and the following disclaimer in the documentation
15 * and/or other materials provided with the distribution.
16 * 3. Neither the name of The Measurement Factory nor the names of its
17 * contributors may be used to endorse or promote products derived from this
18 * software without specific prior written permission.
19 *
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
31 *
32 * Authors:
33 * Florian octo Forster <octo at verplant.org>
34 */
36 #include <arpa/nameser.h>
37 #include <pcap.h>
39 #define T_MAX 65536
40 #define OP_MAX 16
41 #define C_MAX 65536
42 #define MAX_QNAME_SZ 512
44 struct rfc1035_header_s {
45 uint16_t id;
46 unsigned int qr:1;
47 unsigned int opcode:4;
48 unsigned int aa:1;
49 unsigned int tc:1;
50 unsigned int rd:1;
51 unsigned int ra:1;
52 unsigned int z:1;
53 unsigned int ad:1;
54 unsigned int cd:1;
55 unsigned int rcode:4;
56 uint16_t qdcount;
57 uint16_t ancount;
58 uint16_t nscount;
59 uint16_t arcount;
60 uint16_t qtype;
61 uint16_t qclass;
62 char qname[MAX_QNAME_SZ];
63 uint16_t length;
64 };
65 typedef struct rfc1035_header_s rfc1035_header_t;
67 extern int qtype_counts[T_MAX];
68 extern int opcode_counts[OP_MAX];
69 extern int qclass_counts[C_MAX];
71 void dnstop_set_pcap_obj (pcap_t *po);
72 void dnstop_set_callback (void (*cb) (const rfc1035_header_t *));
74 void ignore_list_add_name (const char *name);
75 void handle_pcap (u_char * udata, const struct pcap_pkthdr *hdr, const u_char * pkt);
77 const char *qtype_str(int t);
78 const char *opcode_str(int o);
79 const char *rcode_str (int r);
81 #endif /* !COLLECTD_UTILS_DNS_H */