/[resiprocate]/main/sip/contrib/ares/ares.h
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Contents of /main/sip/contrib/ares/ares.h

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Revision 1479 - (show annotations) (download)
Thu Jun 5 00:30:30 2003 UTC (16 years, 7 months ago) by ryker
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Initial revision

1 /* $Id: ares.h,v 1.1 2003/06/05 00:30:32 ryker Exp $ */
2
3 /* Copyright 1998 by the Massachusetts Institute of Technology.
4 *
5 * Permission to use, copy, modify, and distribute this
6 * software and its documentation for any purpose and without
7 * fee is hereby granted, provided that the above copyright
8 * notice appear in all copies and that both that copyright
9 * notice and this permission notice appear in supporting
10 * documentation, and that the name of M.I.T. not be used in
11 * advertising or publicity pertaining to distribution of the
12 * software without specific, written prior permission.
13 * M.I.T. makes no representations about the suitability of
14 * this software for any purpose. It is provided "as is"
15 * without express or implied warranty.
16 */
17
18 #ifndef ARES__H
19 #define ARES__H
20
21 #include <sys/types.h>
22 #include <netinet/in.h>
23
24 #define ARES_SUCCESS 0
25
26 /* Server error codes (ARES_ENODATA indicates no relevant answer) */
27 #define ARES_ENODATA 1
28 #define ARES_EFORMERR 2
29 #define ARES_ESERVFAIL 3
30 #define ARES_ENOTFOUND 4
31 #define ARES_ENOTIMP 5
32 #define ARES_EREFUSED 6
33
34 /* Locally generated error codes */
35 #define ARES_EBADQUERY 7
36 #define ARES_EBADNAME 8
37 #define ARES_EBADFAMILY 9
38 #define ARES_EBADRESP 10
39 #define ARES_ECONNREFUSED 11
40 #define ARES_ETIMEOUT 12
41 #define ARES_EOF 13
42 #define ARES_EFILE 14
43 #define ARES_ENOMEM 15
44 #define ARES_EDESTRUCTION 16
45
46 /* Flag values */
47 #define ARES_FLAG_USEVC (1 << 0)
48 #define ARES_FLAG_PRIMARY (1 << 1)
49 #define ARES_FLAG_IGNTC (1 << 2)
50 #define ARES_FLAG_NORECURSE (1 << 3)
51 #define ARES_FLAG_STAYOPEN (1 << 4)
52 #define ARES_FLAG_NOSEARCH (1 << 5)
53 #define ARES_FLAG_NOALIASES (1 << 6)
54 #define ARES_FLAG_NOCHECKRESP (1 << 7)
55
56 /* Option mask values */
57 #define ARES_OPT_FLAGS (1 << 0)
58 #define ARES_OPT_TIMEOUT (1 << 1)
59 #define ARES_OPT_TRIES (1 << 2)
60 #define ARES_OPT_NDOTS (1 << 3)
61 #define ARES_OPT_UDP_PORT (1 << 4)
62 #define ARES_OPT_TCP_PORT (1 << 5)
63 #define ARES_OPT_SERVERS (1 << 6)
64 #define ARES_OPT_DOMAINS (1 << 7)
65 #define ARES_OPT_LOOKUPS (1 << 8)
66
67 struct ares_options {
68 int flags;
69 int timeout;
70 int tries;
71 int ndots;
72 unsigned short udp_port;
73 unsigned short tcp_port;
74 struct in_addr *servers;
75 int nservers;
76 char **domains;
77 int ndomains;
78 char *lookups;
79 };
80
81 struct hostent;
82 struct timeval;
83 struct ares_channeldata;
84 typedef struct ares_channeldata *ares_channel;
85 typedef void (*ares_callback)(void *arg, int status, unsigned char *abuf,
86 int alen);
87 typedef void (*ares_host_callback)(void *arg, int status,
88 struct hostent *hostent);
89
90 int ares_init(ares_channel *channelptr);
91 int ares_init_options(ares_channel *channelptr, struct ares_options *options,
92 int optmask);
93 void ares_destroy(ares_channel channel);
94
95 void ares_send(ares_channel channel, const unsigned char *qbuf, int qlen,
96 ares_callback callback, void *arg);
97 void ares_query(ares_channel channel, const char *name, int dnsclass,
98 int type, ares_callback callback, void *arg);
99 void ares_search(ares_channel channel, const char *name, int dnsclass,
100 int type, ares_callback callback, void *arg);
101 void ares_gethostbyname(ares_channel channel, const char *name, int family,
102 ares_host_callback callback, void *arg);
103 void ares_gethostbyaddr(ares_channel channel, const void *addr, int addrlen,
104 int family, ares_host_callback callback, void *arg);
105
106 int ares_fds(ares_channel channel, fd_set *read_fds, fd_set *write_fds);
107 struct timeval *ares_timeout(ares_channel channel, struct timeval *maxtv,
108 struct timeval *tv);
109 void ares_process(ares_channel channel, fd_set *read_fds, fd_set *write_fds);
110
111 int ares_mkquery(const char *name, int dnsclass, int type, unsigned short id,
112 int rd, unsigned char **buf, int *buflen);
113 int ares_expand_name(const unsigned char *encoded, const unsigned char *abuf,
114 int alen, char **s, int *enclen);
115 int ares_parse_a_reply(const unsigned char *abuf, int alen,
116 struct hostent **host);
117 int ares_parse_ptr_reply(const unsigned char *abuf, int alen, const void *addr,
118 int addrlen, int family, struct hostent **host);
119 void ares_free_string(char *str);
120 void ares_free_hostent(struct hostent *host);
121 const char *ares_strerror(int code, char **memptr);
122 void ares_free_errmem(char *mem);
123
124 #endif /* ARES__H */

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