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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_message_state.c
* @brief GNUnet MESSENGER service
*/
#include "gnunet-service-messenger_message_state.h"
void
init_message_state (struct GNUNET_MESSENGER_MessageState *state)
{
GNUNET_assert(state);
init_list_messages (&(state->last_messages));
}
void
clear_message_state (struct GNUNET_MESSENGER_MessageState *state)
{
GNUNET_assert(state);
clear_list_messages (&(state->last_messages));
}
void
get_message_state_chain_hash (const struct GNUNET_MESSENGER_MessageState *state,
struct GNUNET_HashCode *hash)
{
GNUNET_assert((state) && (hash));
if (state->last_messages.head)
GNUNET_memcpy(hash, &(state->last_messages.head->hash), sizeof(*hash));
else
memset (hash, 0, sizeof(*hash));
}
const struct GNUNET_HashCode*
get_message_state_merge_hash (const struct GNUNET_MESSENGER_MessageState *state)
{
GNUNET_assert(state);
if (state->last_messages.head == state->last_messages.tail)
return NULL;
return &(state->last_messages.tail->hash);
}
void
update_message_state (struct GNUNET_MESSENGER_MessageState *state,
int requested,
const struct GNUNET_MESSENGER_Message *message,
const struct GNUNET_HashCode *hash)
{
GNUNET_assert((state) && (message) && (hash));
if ((GNUNET_YES == requested) ||
(GNUNET_MESSENGER_KIND_INFO == message->header.kind) ||
(GNUNET_MESSENGER_KIND_REQUEST == message->header.kind))
return;
if (GNUNET_MESSENGER_KIND_MERGE == message->header.kind)
remove_from_list_messages(&(state->last_messages), &(message->body.merge.previous));
remove_from_list_messages(&(state->last_messages), &(message->header.previous));
add_to_list_messages (&(state->last_messages), hash);
}
void
load_message_state (struct GNUNET_MESSENGER_MessageState *state,
const char *path)
{
GNUNET_assert((state) && (path));
char *last_messages_file;
GNUNET_asprintf (&last_messages_file, "%s%s", path, "last_messages.list");
load_list_messages(&(state->last_messages), last_messages_file);
GNUNET_free(last_messages_file);
}
void
save_message_state (const struct GNUNET_MESSENGER_MessageState *state,
const char *path)
{
GNUNET_assert((state) && (path));
char *last_messages_file;
GNUNET_asprintf (&last_messages_file, "%s%s", path, "last_messages.list");
save_list_messages(&(state->last_messages), last_messages_file);
GNUNET_free(last_messages_file);
}
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