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-rw-r--r--src/regex/regex_api_announce.c186
1 files changed, 0 insertions, 186 deletions
diff --git a/src/regex/regex_api_announce.c b/src/regex/regex_api_announce.c
deleted file mode 100644
index ad8a4fab9..000000000
--- a/src/regex/regex_api_announce.c
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@@ -1,186 +0,0 @@
1/*
2 This file is part of GNUnet
3 Copyright (C) 2012, 2013, 2016 GNUnet e.V.
4
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
8 or (at your 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 Affero General Public License for more details.
14
15 You should have received a copy of the GNU Affero General Public License
16 along with this program. If not, see <http://www.gnu.org/licenses/>.
17
18 SPDX-License-Identifier: AGPL3.0-or-later
19 */
20/**
21 * @file regex/regex_api_announce.c
22 * @brief access regex service to advertise capabilities via regex
23 * @author Maximilian Szengel
24 * @author Christian Grothoff
25 */
26#include "platform.h"
27#include "gnunet_protocols.h"
28#include "gnunet_util_lib.h"
29#include "gnunet_regex_service.h"
30#include "regex_ipc.h"
31
32#define LOG(kind, ...) GNUNET_log_from (kind, "regex-api", __VA_ARGS__)
33
34/**
35 * Handle to store cached data about a regex announce.
36 */
37struct GNUNET_REGEX_Announcement
38{
39 /**
40 * Connection to the regex service.
41 */
42 struct GNUNET_MQ_Handle *mq;
43
44 /**
45 * Our configuration.
46 */
47 const struct GNUNET_CONFIGURATION_Handle *cfg;
48
49 /**
50 * Message we're sending to the service.
51 */
52 char *regex;
53
54 /**
55 * Frequency of announcements.
56 */
57 struct GNUNET_TIME_Relative refresh_delay;
58
59 /**
60 * Number of characters per edge.
61 */
62 uint16_t compression;
63};
64
65
66/**
67 * (Re)connect to the REGEX service with the given announcement @a a.
68 *
69 * @param a REGEX to announce.
70 */
71static void
72announce_reconnect (struct GNUNET_REGEX_Announcement *a);
73
74
75/**
76 * We got a disconnect after asking regex to do the announcement.
77 * Retry.
78 *
79 * @param cls the `struct GNUNET_REGEX_Announcement` to retry
80 * @param error error code
81 */
82static void
83announce_mq_error_handler (void *cls,
84 enum GNUNET_MQ_Error error)
85{
86 struct GNUNET_REGEX_Announcement *a = cls;
87
88 GNUNET_MQ_destroy (a->mq);
89 a->mq = NULL;
90 announce_reconnect (a);
91}
92
93
94/**
95 * (Re)connect to the REGEX service with the given announcement @a a.
96 *
97 * @param a REGEX to announce.
98 */
99static void
100announce_reconnect (struct GNUNET_REGEX_Announcement *a)
101{
102 struct GNUNET_MQ_Envelope *env;
103 struct AnnounceMessage *am;
104 size_t slen;
105
106 a->mq = GNUNET_CLIENT_connect (a->cfg,
107 "regex",
108 NULL,
109 &announce_mq_error_handler,
110 a);
111 if (NULL == a->mq)
112 return;
113 slen = strlen (a->regex) + 1;
114 env = GNUNET_MQ_msg_extra (am,
115 slen,
116 GNUNET_MESSAGE_TYPE_REGEX_ANNOUNCE);
117 am->compression = htons (a->compression);
118 am->reserved = htons (0);
119 am->refresh_delay = GNUNET_TIME_relative_hton (a->refresh_delay);
120 GNUNET_memcpy (&am[1],
121 a->regex,
122 slen);
123 GNUNET_MQ_send (a->mq,
124 env);
125}
126
127
128/**
129 * Announce the given peer under the given regular expression.
130 *
131 * @param cfg configuration to use
132 * @param regex Regular expression to announce.
133 * @param refresh_delay after what delay should the announcement be repeated?
134 * @param compression How many characters per edge can we squeeze?
135 * @return Handle to reuse o free cached resources.
136 * Must be freed by calling #GNUNET_REGEX_announce_cancel().
137 */
138struct GNUNET_REGEX_Announcement *
139GNUNET_REGEX_announce (const struct GNUNET_CONFIGURATION_Handle *cfg,
140 const char *regex,
141 struct GNUNET_TIME_Relative refresh_delay,
142 uint16_t compression)
143{
144 struct GNUNET_REGEX_Announcement *a;
145 size_t slen;
146
147 slen = strlen (regex) + 1;
148 if (slen + sizeof(struct AnnounceMessage) >= GNUNET_MAX_MESSAGE_SIZE)
149 {
150 GNUNET_log (GNUNET_ERROR_TYPE_WARNING,
151 _ ("Regex `%s' is too long!\n"),
152 regex);
153 GNUNET_break (0);
154 return NULL;
155 }
156 a = GNUNET_new (struct GNUNET_REGEX_Announcement);
157 a->cfg = cfg;
158 a->refresh_delay = refresh_delay;
159 a->compression = compression;
160 a->regex = GNUNET_strdup (regex);
161 announce_reconnect (a);
162 if (NULL == a->mq)
163 {
164 GNUNET_free (a->regex);
165 GNUNET_free (a);
166 return NULL;
167 }
168 return a;
169}
170
171
172/**
173 * Stop announcing the regex specified by the given handle.
174 *
175 * @param a handle returned by a previous #GNUNET_REGEX_announce() call.
176 */
177void
178GNUNET_REGEX_announce_cancel (struct GNUNET_REGEX_Announcement *a)
179{
180 GNUNET_MQ_destroy (a->mq);
181 GNUNET_free (a->regex);
182 GNUNET_free (a);
183}
184
185
186/* end of regex_api_announce.c */
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-25 20:52:08 +0000