1 files changed, 105 insertions, 0 deletions

diff --git a/src/service/messenger/messenger_api_message_control.h b/src/service/messenger/messenger_api_message_control.h
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+++ b/src/service/messenger/messenger_api_message_control.h
@@ -0,0 +1,105 @@
+/*
+   This file is part of GNUnet.
+   Copyright (C) 2024 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/messenger_api_message_control.h
+ * @brief messenger api: client and service implementation of GNUnet MESSENGER service
+ */
+
+#ifndef GNUNET_MESSENGER_API_MESSAGE_CONTROL_H
+#define GNUNET_MESSENGER_API_MESSAGE_CONTROL_H
+
+#include "gnunet_common.h"
+#include "gnunet_messenger_service.h"
+#include "gnunet_util_lib.h"
+
+struct GNUNET_MESSENGER_Message;
+struct GNUNET_MESSENGER_MessageControl;
+
+struct GNUNET_MESSENGER_MessageControlQueue
+{
+  struct GNUNET_MESSENGER_MessageControl *control;
+
+  struct GNUNET_HashCode sender;
+  struct GNUNET_HashCode context;
+  struct GNUNET_HashCode hash;
+
+  struct GNUNET_MESSENGER_Message *message;
+  enum GNUNET_MESSENGER_MessageFlags flags;
+  struct GNUNET_SCHEDULER_Task *task;
+
+  struct GNUNET_MESSENGER_MessageControlQueue *prev;
+  struct GNUNET_MESSENGER_MessageControlQueue *next;
+};
+
+struct GNUNET_MESSENGER_Room;
+
+struct GNUNET_MESSENGER_MessageControl
+{
+  struct GNUNET_MESSENGER_Room *room;
+
+  struct GNUNET_CONTAINER_MultiShortmap *peer_messages;
+  struct GNUNET_CONTAINER_MultiShortmap *member_messages;
+
+  struct GNUNET_MESSENGER_MessageControlQueue *head;
+  struct GNUNET_MESSENGER_MessageControlQueue *tail;
+};
+
+/**
+ * Creates and allocates a new message control for a <i>room</i> of the client API.
+ *
+ * @param[in,out] room Room
+ * @return New message control
+ */
+struct GNUNET_MESSENGER_MessageControl*
+create_message_control (struct GNUNET_MESSENGER_Room *room);
+
+/**
+ * Destroys a message control and frees its memory fully from the client API.
+ *
+ * @param[in,out] control Message control
+ */
+void
+destroy_message_control (struct GNUNET_MESSENGER_MessageControl *control);
+
+/**
+ * Processes a new <i>message</i> with its <i>hash</i> and regarding information about
+ * <i>sender</i>, <i>context</i> and message <i>flags</i> using a selected message
+ * <i>control</i>.
+ *
+ * The message control will ensure order of messages so that senders of messages
+ * can be identified via previously processed messages.
+ *
+ * @param[in,out] control Message control
+ * @param[in] sender Sender hash
+ * @param[in] context Context hash
+ * @param[in] hash Message hash
+ * @param[in] message Message
+ * @param[in] flags Message flags
+ */
+void
+process_message_control (struct GNUNET_MESSENGER_MessageControl *control,
+                         const struct GNUNET_HashCode *sender,
+                         const struct GNUNET_HashCode *context,
+                         const struct GNUNET_HashCode *hash,
+                         const struct GNUNET_MESSENGER_Message *message,
+                         enum GNUNET_MESSENGER_MessageFlags flags);
+
+#endif //GNUNET_MESSENGER_API_MESSAGE_CONTROL_H
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