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
|
/* Copyright (c) 2014, Vsevolod Stakhov
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED ''AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL AUTHOR BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#ifndef UTIL_H_
#define UTIL_H_
#include "dns_private.h"
/**
* Make a universal socket
* @param credits host, ip or path to unix socket
* @param port port (used for network sockets)
* @param type of socket (SOCK_STREAM or SOCK_DGRAM)
*/
int
rdns_make_client_socket (const char *credits,
uint16_t port,
int type,
struct sockaddr **psockaddr,
socklen_t *psocklen);
/**
* Generate new random DNS id
* @return dns id
*/
uint16_t rdns_permutor_generate_id (void);
/**
* Free IO channel
*/
void rdns_ioc_free (struct rdns_io_channel *ioc);
/**
* Creates a new IO channel
*/
struct rdns_io_channel * rdns_ioc_new (struct rdns_server *srv,
struct rdns_resolver *resolver,
bool is_tcp);
/**
* Resets inactive/errored TCP chain as recommended by RFC
* @param ioc
*/
void rdns_ioc_tcp_reset (struct rdns_io_channel *ioc);
/**
* Connect TCP IO channel to a server
* @param ioc
*/
bool rdns_ioc_tcp_connect (struct rdns_io_channel *ioc);
/**
* Free request
* @param req
*/
void rdns_request_free (struct rdns_request *req);
/**
* Removes request from a channel's hash (e.g. if needed to migrate to another channel)
* @param req
*/
void rdns_request_remove_from_hash (struct rdns_request *req);
/**
* Creates a new reply
* @param req
* @param rcode
* @return
*/
struct rdns_reply * rdns_make_reply (struct rdns_request *req, enum dns_rcode rcode);
/**
* Free reply
* @param rep
*/
void rdns_reply_free (struct rdns_reply *rep);
void rdns_request_unschedule (struct rdns_request *req, bool remove_from_hash);
#endif /* UTIL_H_ */
|
