1 files changed, 108 insertions, 0 deletions

diff --git a/src/service/messenger/messenger_api_queue_messages.c b/src/service/messenger/messenger_api_queue_messages.c
new file mode 100644
index 000000000..f6a69366c
--- /dev/null
+++ b/src/service/messenger/messenger_api_queue_messages.c
@@ -0,0 +1,108 @@
+/*
+   This file is part of GNUnet.
+   Copyright (C) 2023 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_queue_messages.c
+ * @brief messenger api: client implementation of GNUnet MESSENGER service
+ */
+
+#include "messenger_api_queue_messages.h"
+
+void
+init_queue_messages (struct GNUNET_MESSENGER_QueueMessages *messages)
+{
+  GNUNET_assert (messages);
+
+  messages->head = NULL;
+  messages->tail = NULL;
+}
+
+
+void
+clear_queue_messages (struct GNUNET_MESSENGER_QueueMessages *messages)
+{
+  GNUNET_assert (messages);
+
+  while (messages->head)
+  {
+    struct GNUNET_MESSENGER_QueueMessage *element = messages->head;
+
+    GNUNET_CONTAINER_DLL_remove (messages->head, messages->tail, element);
+
+    if (element->message)
+      destroy_message (element->message);
+
+    GNUNET_free (element);
+  }
+
+  messages->head = NULL;
+  messages->tail = NULL;
+}
+
+
+void
+enqueue_to_messages (struct GNUNET_MESSENGER_QueueMessages *messages,
+                     const struct GNUNET_CRYPTO_PrivateKey *sender,
+                     const struct GNUNET_MESSENGER_Message *message)
+{
+  GNUNET_assert ((messages) && (message));
+
+  struct GNUNET_MESSENGER_QueueMessage *element = GNUNET_new (struct
+                                                              GNUNET_MESSENGER_QueueMessage);
+
+  if (! element)
+    return;
+
+  element->message = copy_message (message);
+
+  if (sender)
+    GNUNET_memcpy (&(element->sender), sender, sizeof (element->sender));
+
+  if (! element->message)
+  {
+    GNUNET_free (element);
+    return;
+  }
+
+  GNUNET_CONTAINER_DLL_insert_tail (messages->head, messages->tail, element);
+}
+
+
+struct GNUNET_MESSENGER_Message*
+dequeue_from_messages (struct GNUNET_MESSENGER_QueueMessages *messages,
+                       struct GNUNET_CRYPTO_PrivateKey *sender)
+{
+  GNUNET_assert (messages);
+
+  struct GNUNET_MESSENGER_QueueMessage *element = messages->head;
+
+  if (! element)
+    return NULL;
+
+  struct GNUNET_MESSENGER_Message *message = element->message;
+
+  GNUNET_CONTAINER_DLL_remove (messages->head, messages->tail, element);
+
+  if (sender)
+    GNUNET_memcpy (sender, &(element->sender), sizeof (*sender));
+
+  GNUNET_free (element);
+  return message;
+}