OpenDNSSEC-signer  1.4.1
query.h
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1 /*
2  * $Id: query.h 4958 2011-04-18 07:11:09Z matthijs $
3  *
4  * Copyright (c) 2011 NLNet Labs. All rights reserved.
5  *
6  * Redistribution and use in source and binary forms, with or without
7  * modification, are permitted provided that the following conditions
8  * are met:
9  * 1. Redistributions of source code must retain the above copyright
10  * notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  * notice, this list of conditions and the following disclaimer in the
13  * documentation and/or other materials provided with the distribution.
14  *
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17  * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18  * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
19  * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE
21  * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
22  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER
23  * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
24  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN
25  * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
26  *
27  */
28 
34 #ifndef WIRE_QUERY_H
35 #define WIRE_QUERY_H
36 
37 #include "config.h"
38 #include "shared/allocator.h"
39 #include "signer/zone.h"
40 #include "wire/buffer.h"
41 #include "wire/edns.h"
42 #include "wire/tsig.h"
43 
44 #define UDP_MAX_MESSAGE_LEN 512
45 #define TCP_MAX_MESSAGE_LEN 65535
46 #define QUERY_RESPONSE_MAX_RRSET 10 /* should be enough */
47 
48 enum query_enum {
53 };
54 typedef enum query_enum query_state;
55 
60 typedef struct query_struct query_type;
61 struct query_struct {
62  /* Memory allocator */
64  /* Query from addres */
65  struct sockaddr_storage addr;
66  socklen_t addrlen;
67  /* Maximum supported query size */
68  size_t maxlen;
70  /* TSIG */
72  /* EDNS */
74  /* TCP */
75  int tcp;
76  uint16_t tcplen;
78  /* QNAME, QTYPE, QCLASS */
79 
80  /* Zone */
82  /* Compression */
83 
84  /* AXFR IXFR */
85  FILE* axfr_fd;
86  uint32_t serial;
87  size_t startpos;
88  /* Bits */
89  unsigned axfr_is_done : 1;
90  unsigned tsig_prepare_it : 1;
91  unsigned tsig_update_it : 1;
92  unsigned tsig_sign_it : 1;
93 };
94 
101  size_t rrset_count;
104 };
105 
111 query_type* query_create(void);
112 
118 void query_prepare(query_type* q);
119 
127 query_state query_process(query_type* q, void* engine);
128 
136 void query_reset(query_type* q, size_t maxlen, int is_tcp);
137 
144 void query_add_optional(query_type* q, void* engine);
145 
153 int query_add_rr(query_type* q, ldns_rr* rr);
154 
160 void query_cleanup(query_type* q);
161 
162 #endif /* WIRE_QUERY_H */