1 files changed, 185 insertions, 0 deletions

diff --git a/src/service/messenger/gnunet-service-messenger_message_handle.c b/src/service/messenger/gnunet-service-messenger_message_handle.c
new file mode 100644
index 000000000..ee099d893
--- /dev/null
+++ b/src/service/messenger/gnunet-service-messenger_message_handle.c
@@ -0,0 +1,185 @@
+/*
+   This file is part of GNUnet.
+   Copyright (C) 2020--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/gnunet-service-messenger_message_handle.c
+ * @brief GNUnet MESSENGER service
+ */
+
+#include "gnunet-service-messenger_message_handle.h"
+
+#include "gnunet-service-messenger_room.h"
+
+static void
+handle_member_session_switch (struct GNUNET_MESSENGER_MemberSession *session,
+                              const struct GNUNET_MESSENGER_Message *message,
+                              const struct GNUNET_HashCode *hash)
+{
+  struct GNUNET_MESSENGER_MemberSession *next = switch_member_session (session,
+                                                                       message,
+                                                                       hash);
+
+  if (next != session)
+    add_member_session (next->member, next);
+}
+
+
+void
+handle_message_join (struct GNUNET_MESSENGER_SrvRoom *room,
+                     struct GNUNET_MESSENGER_SenderSession *session,
+                     const struct GNUNET_MESSENGER_Message *message,
+                     const struct GNUNET_HashCode *hash)
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Member (%s) joins room (%s).\n",
+              GNUNET_sh2s (&(message->header.sender_id)), GNUNET_h2s (
+                get_srv_room_key (room)));
+
+  if (GNUNET_OK != reset_member_session (session->member, hash))
+    GNUNET_log (GNUNET_ERROR_TYPE_ERROR, "Resetting member session failed!\n");
+
+  solve_srv_room_member_collisions (
+    room,
+    &(message->body.join.key),
+    &(message->header.sender_id),
+    GNUNET_TIME_absolute_ntoh (message->header.timestamp)
+    );
+}
+
+
+void
+handle_message_leave (struct GNUNET_MESSENGER_SrvRoom *room,
+                      struct GNUNET_MESSENGER_SenderSession *session,
+                      const struct GNUNET_MESSENGER_Message *message,
+                      const struct GNUNET_HashCode *hash)
+{
+  GNUNET_log (GNUNET_ERROR_TYPE_INFO, "Member (%s) leaves room (%s).\n",
+              GNUNET_sh2s (&(message->header.sender_id)), GNUNET_h2s (
+                get_srv_room_key (room)));
+
+  close_member_session (session->member);
+}
+
+
+void
+handle_message_key (struct GNUNET_MESSENGER_SrvRoom *room,
+                    struct GNUNET_MESSENGER_SenderSession *session,
+                    const struct GNUNET_MESSENGER_Message *message,
+                    const struct GNUNET_HashCode *hash)
+{
+  handle_member_session_switch (session->member, message, hash);
+}
+
+
+void
+handle_message_peer (struct GNUNET_MESSENGER_SrvRoom *room,
+                     struct GNUNET_MESSENGER_SenderSession *session,
+                     const struct GNUNET_MESSENGER_Message *message,
+                     const struct GNUNET_HashCode *hash)
+{
+  struct GNUNET_MESSENGER_PeerStore *store = get_srv_room_peer_store (room);
+
+  if (0 == GNUNET_memcmp (session->peer, &(message->body.peer.peer)))
+    update_store_peer (store, &(message->body.peer.peer), GNUNET_YES);
+
+  if (GNUNET_NO == contains_list_tunnels (&(room->basement),
+                                          &(message->body.peer.peer)))
+    add_to_list_tunnels (&(room->basement), &(message->body.peer.peer), hash);
+
+  if (room->peer_message)
+    rebuild_srv_room_basement_structure (room);
+}
+
+
+void
+handle_message_id (struct GNUNET_MESSENGER_SrvRoom *room,
+                   struct GNUNET_MESSENGER_SenderSession *session,
+                   const struct GNUNET_MESSENGER_Message *message,
+                   const struct GNUNET_HashCode *hash)
+{
+  handle_member_session_switch (session->member, message, hash);
+
+  solve_srv_room_member_collisions (
+    room,
+    get_member_session_public_key (session->member),
+    &(message->body.id.id),
+    GNUNET_TIME_absolute_ntoh (message->header.timestamp)
+    );
+}
+
+
+void
+handle_message_miss (struct GNUNET_MESSENGER_SrvRoom *room,
+                     struct GNUNET_MESSENGER_SenderSession *session,
+                     const struct GNUNET_MESSENGER_Message *message,
+                     const struct GNUNET_HashCode *hash)
+{
+  struct GNUNET_MESSENGER_PeerStore *store = get_srv_room_peer_store (room);
+
+  if (0 == GNUNET_memcmp (session->peer, &(message->body.miss.peer)))
+    update_store_peer (store, &(message->body.miss.peer), GNUNET_NO);
+
+  struct GNUNET_MESSENGER_ListTunnel *element = find_list_tunnels (
+    &(room->basement), &(message->body.miss.peer), NULL);
+
+  if (! element)
+    return;
+
+  remove_from_list_tunnels (&(room->basement), element);
+
+  if (room->peer_message)
+    rebuild_srv_room_basement_structure (room);
+}
+
+
+void
+handle_message_delete (struct GNUNET_MESSENGER_SrvRoom *room,
+                       struct GNUNET_MESSENGER_SenderSession *session,
+                       const struct GNUNET_MESSENGER_Message *message,
+                       const struct GNUNET_HashCode *hash)
+{
+  struct GNUNET_TIME_Relative delay = GNUNET_TIME_relative_ntoh (
+    message->body.deletion.delay);
+  struct GNUNET_TIME_Absolute action = GNUNET_TIME_absolute_ntoh (
+    message->header.timestamp);
+
+  action = GNUNET_TIME_absolute_add (action, delay);
+  delay = GNUNET_TIME_absolute_get_difference (GNUNET_TIME_absolute_get (),
+                                               action);
+
+  delete_srv_room_message (room, session->member,
+                           &(message->body.deletion.hash), delay);
+}
+
+
+void
+handle_message_connection (struct GNUNET_MESSENGER_SrvRoom *room,
+                           struct GNUNET_MESSENGER_SenderSession *session,
+                           const struct GNUNET_MESSENGER_Message *message,
+                           const struct GNUNET_HashCode *hash)
+{
+  struct GNUNET_MESSENGER_ListTunnel *element = find_list_tunnels (
+    &(room->basement), session->peer, NULL);
+
+  if (! element)
+    return;
+
+  memcpy (&(element->connection), &(message->body.connection),
+          sizeof (struct GNUNET_MESSENGER_MessageConnection));
+}