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/*
This file is part of GNUnet.
Copyright (C) 2020--2021 GNUnet e.V.
GNUnet is free software: you can redistribute it and/or modify it
under the terms of the GNU Affero General Public License as published
by the Free Software Foundation, either version 3 of the License,
or (at your option) any later version.
GNUnet is distributed in the hope that it will be useful, but
WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Affero General Public License for more details.
You should have received a copy of the GNU Affero General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
SPDX-License-Identifier: AGPL3.0-or-later
*/
/**
* @author Tobias Frisch
* @file src/messenger/gnunet-service-messenger_list_messages.h
* @brief GNUnet MESSENGER service
*/
#ifndef GNUNET_SERVICE_MESSENGER_LIST_MESSAGES_H
#define GNUNET_SERVICE_MESSENGER_LIST_MESSAGES_H
#include "platform.h"
#include "gnunet_crypto_lib.h"
#include "gnunet_container_lib.h"
#include "gnunet_disk_lib.h"
struct GNUNET_MESSENGER_ListMessage
{
struct GNUNET_MESSENGER_ListMessage *prev;
struct GNUNET_MESSENGER_ListMessage *next;
struct GNUNET_HashCode hash;
};
struct GNUNET_MESSENGER_ListMessages
{
struct GNUNET_MESSENGER_ListMessage *head;
struct GNUNET_MESSENGER_ListMessage *tail;
};
/**
* Initializes list of message hashes as empty list.
*
* @param[out] messages List of hashes
*/
void
init_list_messages (struct GNUNET_MESSENGER_ListMessages *messages);
/**
* Clears the list of message hashes.
*
* @param[in/out] messages List of hashes
*/
void
clear_list_messages (struct GNUNET_MESSENGER_ListMessages *messages);
/**
* Adds a specific <i>hash</i> from a message to the end of the list.
*
* @param[in/out] messages List of hashes
* @param[in] hash Hash of message
*/
void
add_to_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const struct GNUNET_HashCode *hash);
/**
* Copies all message hashes from an <i>origin</i> to another list.
*
* @param[in/out] messages Destination list of hashes
* @param[in] origin Source list of hashes
*/
void
copy_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const struct GNUNET_MESSENGER_ListMessages *origin);
/**
* Removes the first entry with a matching <i>hash</i> from the list.
*
* @param[in/out] messages List of hashes
* @param[in] hash Hash of message
*/
void
remove_from_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const struct GNUNET_HashCode *hash);
/**
* Loads the list of message hashes from a file under a given <i>path</i>.
*
* @param[out] messages List of hashes
* @param[in] path Path of file
*/
void
load_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const char *path);
/**
* Saves the list of message hashes to a file under a given <i>path</i>.
*
* @param[in] messages List of hashes
* @param[in] path Path of file
*/
void
save_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const char *path);
#endif //GNUNET_SERVICE_MESSENGER_LIST_MESSAGES_H
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