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1/*
2 This file is part of GNUnet.
3 Copyright (C) 2020--2021 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 * @author Tobias Frisch
22 * @file src/messenger/messenger_api_handle.h
23 * @brief messenger api: client implementation of GNUnet MESSENGER service
24 */
25
26#ifndef GNUNET_MESSENGER_API_HANDLE_H
27#define GNUNET_MESSENGER_API_HANDLE_H
28
29#include "platform.h"
30#include "gnunet_cadet_service.h"
31#include "gnunet_container_lib.h"
32#include "gnunet_crypto_lib.h"
33#include "gnunet_identity_service.h"
34#include "gnunet_peer_lib.h"
35
36#include "gnunet_messenger_service.h"
37
38#include "messenger_api_contact_store.h"
39#include "messenger_api_room.h"
40
41struct GNUNET_MESSENGER_Handle
42{
43 const struct GNUNET_CONFIGURATION_Handle *cfg;
44
45 struct GNUNET_MQ_Handle *mq;
46
47 GNUNET_MESSENGER_IdentityCallback identity_callback;
48 void *identity_cls;
49
50 GNUNET_MESSENGER_MessageCallback msg_callback;
51 void *msg_cls;
52
53 char *name;
54 struct GNUNET_IDENTITY_PublicKey *pubkey;
55
56 struct GNUNET_TIME_Relative reconnect_time;
57 struct GNUNET_SCHEDULER_Task *reconnect_task;
58
59 struct GNUNET_MESSENGER_ContactStore contact_store;
60
61 struct GNUNET_CONTAINER_MultiHashMap *rooms;
62};
63
64/**
65 * Creates and allocates a new handle using a given configuration and a custom message callback
66 * with a given closure for the client API.
67 *
68 * @param[in] cfg Configuration
69 * @param[in] msg_callback Message callback
70 * @param[in/out] msg_cls Closure
71 * @return New handle
72 */
73struct GNUNET_MESSENGER_Handle*
74create_handle (const struct GNUNET_CONFIGURATION_Handle *cfg,
75 GNUNET_MESSENGER_IdentityCallback identity_callback,
76 void *identity_cls,
77 GNUNET_MESSENGER_MessageCallback msg_callback,
78 void *msg_cls);
79
80/**
81 * Destroys a <i>handle</i> and frees its memory fully from the client API.
82 *
83 * @param[in/out] handle Handle
84 */
85void
86destroy_handle (struct GNUNET_MESSENGER_Handle *handle);
87
88/**
89 * Sets the name of a <i>handle</i> to a specific <i>name</i>.
90 *
91 * @param[in/out] handle Handle
92 * @param[in] name New name
93 */
94void
95set_handle_name (struct GNUNET_MESSENGER_Handle *handle,
96 const char *name);
97
98/**
99 * Returns the current name of a given <i>handle</i> or NULL if no valid name was assigned yet.
100 *
101 * @param[in] handle Handle
102 * @return Name of the handle or NULL
103 */
104const char*
105get_handle_name (const struct GNUNET_MESSENGER_Handle *handle);
106
107/**
108 * Sets the public key of a given <i>handle</i> to a specific public key.
109 *
110 * @param[in/out] handle Handle
111 * @param[in] pubkey Public key
112 */
113void
114set_handle_key (struct GNUNET_MESSENGER_Handle *handle,
115 const struct GNUNET_IDENTITY_PublicKey *pubkey);
116
117/**
118 * Returns the public key of a given <i>handle</i>.
119 *
120 * @param[in] handle Handle
121 * @return Public key of the handle
122 */
123const struct GNUNET_IDENTITY_PublicKey*
124get_handle_key (const struct GNUNET_MESSENGER_Handle *handle);
125
126/**
127 * Returns the used contact store of a given <i>handle</i>.
128 *
129 * @param[in/out] handle Handle
130 * @return Contact store
131 */
132struct GNUNET_MESSENGER_ContactStore*
133get_handle_contact_store (struct GNUNET_MESSENGER_Handle *handle);
134
135/**
136 * Returns the contact of a given <i>handle</i> in a room identified by a
137 * given <i>key</i>.
138 *
139 * @param[in/out] handle Handle
140 * @param[in] key Key of room
141 * @return Contact
142 */
143struct GNUNET_MESSENGER_Contact*
144get_handle_contact (struct GNUNET_MESSENGER_Handle *handle,
145 const struct GNUNET_HashCode *key);
146
147/**
148 * Marks a room known to a <i>handle</i> identified by a given <i>key</i> as open.
149 *
150 * @param[in/out] handle Handle
151 * @param[in] key Key of room
152 */
153void
154open_handle_room (struct GNUNET_MESSENGER_Handle *handle,
155 const struct GNUNET_HashCode *key);
156
157/**
158 * Adds a tunnel for a room known to a <i>handle</i> identified by a given <i>key</i> to a
159 * list of opened connections.
160 *
161 * @param[in/out] handle Handle
162 * @param[in] door Peer identity
163 * @param[in] key Key of room
164 */
165void
166entry_handle_room_at (struct GNUNET_MESSENGER_Handle *handle,
167 const struct GNUNET_PeerIdentity *door,
168 const struct GNUNET_HashCode *key);
169
170/**
171 * Destroys and so implicitly closes a room known to a <i>handle</i> identified by a given <i>key</i>.
172 *
173 * @param[in/out] handle Handle
174 * @param[in] key Key of room
175 */
176void
177close_handle_room (struct GNUNET_MESSENGER_Handle *handle,
178 const struct GNUNET_HashCode *key);
179
180#endif //GNUNET_MESSENGER_API_HANDLE_H