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Diffstat (limited to 'src/include/gnunet_dnsstub_lib.h')
-rw-r--r-- | src/include/gnunet_dnsstub_lib.h | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/src/include/gnunet_dnsstub_lib.h b/src/include/gnunet_dnsstub_lib.h new file mode 100644 index 000000000..ffe82dbbe --- /dev/null +++ b/src/include/gnunet_dnsstub_lib.h | |||
@@ -0,0 +1,115 @@ | |||
1 | /* | ||
2 | This file is part of GNUnet | ||
3 | (C) 2012 Christian Grothoff (and other contributing authors) | ||
4 | |||
5 | GNUnet is free software; you can redistribute it and/or modify | ||
6 | it under the terms of the GNU General Public License as published | ||
7 | by the Free Software Foundation; either version 3, or (at your | ||
8 | option) any later version. | ||
9 | |||
10 | GNUnet is distributed in the hope that it will be useful, but | ||
11 | WITHOUT ANY WARRANTY; without even the implied warranty of | ||
12 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | ||
13 | General Public License for more details. | ||
14 | |||
15 | You should have received a copy of the GNU General Public License | ||
16 | along with GNUnet; see the file COPYING. If not, write to the | ||
17 | Free Software Foundation, Inc., 59 Temple Place - Suite 330, | ||
18 | Boston, MA 02111-1307, USA. | ||
19 | */ | ||
20 | |||
21 | /** | ||
22 | * @file include/gnunet_dnsstub_lib.h | ||
23 | * @brief API for helper library to send DNS requests to DNS resolver | ||
24 | * @author Christian Grothoff | ||
25 | */ | ||
26 | #ifndef GNUNET_DNSSTUB_LIB_H | ||
27 | #define GNUNET_DNSSTUB_LIB_H | ||
28 | |||
29 | #include "gnunet_common.h" | ||
30 | #include "gnunet_tun_lib.h" | ||
31 | |||
32 | /** | ||
33 | * Opaque handle to the stub resolver. | ||
34 | */ | ||
35 | struct GNUNET_DNSSTUB_Context; | ||
36 | |||
37 | /** | ||
38 | * Opaque handle to a socket doing UDP requests. | ||
39 | */ | ||
40 | struct GNUNET_DNSSTUB_RequestSocket; | ||
41 | |||
42 | |||
43 | /** | ||
44 | * Start a DNS stub resolver. | ||
45 | * | ||
46 | * @param dns_ip target IP address to use | ||
47 | * @return NULL on error | ||
48 | */ | ||
49 | struct GNUNET_DNSSTUB_Context * | ||
50 | GNUNET_DNSSTUB_start (const char *dns_ip); | ||
51 | |||
52 | |||
53 | /** | ||
54 | * Cleanup DNSSTUB resolver. | ||
55 | * | ||
56 | * @param ctx stub resolver to clean up | ||
57 | */ | ||
58 | void | ||
59 | GNUNET_DNSSTUB_stop (struct GNUNET_DNSSTUB_Context *ctx); | ||
60 | |||
61 | |||
62 | /** | ||
63 | * Function called with the result of a DNS resolution. | ||
64 | * | ||
65 | * @param cls closure | ||
66 | * @param rs socket that received the response | ||
67 | * @param dns dns response, never NULL | ||
68 | * @param dns_len number of bytes in 'dns' | ||
69 | */ | ||
70 | typedef void (*GNUNET_DNSSTUB_ResultCallback)(void *cls, | ||
71 | struct GNUNET_DNSSTUB_RequestSocket *rs, | ||
72 | const struct GNUNET_TUN_DnsHeader *dns, | ||
73 | size_t dns_len); | ||
74 | |||
75 | |||
76 | /** | ||
77 | * Perform DNS resolution using given address. | ||
78 | * | ||
79 | * @param ctx stub resolver to use | ||
80 | * @param af address family to use | ||
81 | * @param request DNS request to transmit | ||
82 | * @param request_len number of bytes in msg | ||
83 | * @param rc function to call with result | ||
84 | * @param rc_cls closure for 'rc' | ||
85 | * @return socket used for the request, NULL on error | ||
86 | */ | ||
87 | struct GNUNET_DNSSTUB_RequestSocket * | ||
88 | GNUNET_DNSSTUB_resolve (struct GNUNET_DNSSTUB_Context *ctx, | ||
89 | const struct sockaddr *sa, | ||
90 | socklen_t sa_len, | ||
91 | const void *request, | ||
92 | size_t request_len, | ||
93 | GNUNET_DNSSTUB_ResultCallback rc, | ||
94 | void *rc_cls); | ||
95 | |||
96 | |||
97 | /** | ||
98 | * Perform DNS resolution using our default IP from init. | ||
99 | * | ||
100 | * @param ctx stub resolver to use | ||
101 | * @param request DNS request to transmit | ||
102 | * @param request_len number of bytes in msg | ||
103 | * @param rc function to call with result | ||
104 | * @param rc_cls closure for 'rc' | ||
105 | * @return socket used for the request, NULL on error | ||
106 | */ | ||
107 | struct GNUNET_DNSSTUB_RequestSocket * | ||
108 | GNUNET_DNSSTUB_resolve2 (struct GNUNET_DNSSTUB_Context *ctx, | ||
109 | const void *request, | ||
110 | size_t request_len, | ||
111 | GNUNET_DNSSTUB_ResultCallback rc, | ||
112 | void *rc_cls); | ||
113 | |||
114 | |||
115 | #endif | ||