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1/*
2 This file is part of GNUnet.
3 Copyright (C) 2020 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/gnunet-service-messenger_list_messages.h
23 * @brief GNUnet MESSENGER service
24 */
25
26#ifndef GNUNET_SERVICE_MESSENGER_LIST_MESSAGES_H
27#define GNUNET_SERVICE_MESSENGER_LIST_MESSAGES_H
28
29#include "platform.h"
30#include "gnunet_crypto_lib.h"
31#include "gnunet_container_lib.h"
32
33struct GNUNET_MESSENGER_ListMessage
34{
35 struct GNUNET_MESSENGER_ListMessage *prev;
36 struct GNUNET_MESSENGER_ListMessage *next;
37
38 struct GNUNET_HashCode hash;
39};
40
41struct GNUNET_MESSENGER_ListMessages
42{
43 struct GNUNET_MESSENGER_ListMessage *head;
44 struct GNUNET_MESSENGER_ListMessage *tail;
45};
46
47/**
48 * Initializes list of message hashes as empty list.
49 *
50 * @param messages List of hashes
51 */
52void
53init_list_messages (struct GNUNET_MESSENGER_ListMessages *messages);
54
55/**
56 * Clears the list of message hashes.
57 *
58 * @param messages List of hashes
59 */
60void
61clear_list_messages (struct GNUNET_MESSENGER_ListMessages *messages);
62
63/**
64 * Adds a specific <i>hash</i> from a message to the end of the list.
65 *
66 * @param messages List of hashes
67 * @param hash Hash of message
68 */
69void
70add_to_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const struct GNUNET_HashCode *hash);
71
72/**
73 * Removes the first entry with a matching <i>hash</i> from the list.
74 *
75 * @param messages List of hashes
76 * @param hash Hash of message
77 */
78void
79remove_from_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const struct GNUNET_HashCode *hash);
80
81#endif //GNUNET_SERVICE_MESSENGER_LIST_MESSAGES_H