-added core functionality of the messenger service

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

formatting messenger code

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-completed core functionality of messenger service

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-code cleanup and reuse

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

+added structure to memberships of rooms

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-implemented member permission checks and deletion of messages

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-moved solving requests out of updating last messages (also forward before update)

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-reduced complexity of permisson check and changed load/save of rooms

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-added save/load for accessed keys and basement peers of a room

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-implemented save/load for members with their history and session

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-abstracted management of egos and contacts

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-fix warning

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-abstracted management of members

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-fixed and adjusted test case

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-separated handling of direct and anonymous contacts

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-messenger added member-sessions which fix multiple edge cases, also additional cleanup

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-updated docs and fixed memory leak

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-changed info messages and added protocol version exchange

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-adjusted client api to use contacts from sessions

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-added more logging and fixed wrong session usage

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-adjusted comm0 test case and removed adding members from checking messages

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-fixed test-case for peer exchange

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-getting multiple peers connected in test-case with cadet

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-fixed wrong assert and added tunnel version check

-simplified handling and forwarding

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-fixed merging last messages and cycling info messages

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-automated adding sessions and members

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-corrected use of identity keys and signatures

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-adding local joining on entering external room

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-fixed test-case comm0

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-added more test-cases with generic setup

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-fixed multiple simultaneous channels blocking each other

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-making test-cases more precise

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-added check of members in test-cases, reduced merge messages

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-unified delayed operations: requests, deletions and merges

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-finished handling of operations

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-fixed member session historystorage, added request permission check and padding for transmission

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-improved padding and removed automatic recursive requests

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-implemented filter for sending messages and added private messages to API level

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-wrong setups fixed with proper ego lookups

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-fixed problem with anonymous ego and changed to discrete-level padding

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-added links to replace deleted messages, added local deletion and fixed anonymous id changing

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

-added session completion and removal through completion process

Signed-off-by: TheJackiMonster <thejackimonster@gmail.com>

1 files changed, 25 insertions, 103 deletions

diff --git a/src/messenger/gnunet-service-messenger_message_recv.h b/src/messenger/gnunet-service-messenger_message_recv.h
index 245612cb0..9cb36c466 100644
--- a/src/messenger/gnunet-service-messenger_message_recv.h
+++ b/src/messenger/gnunet-service-messenger_message_recv.h
@@ -1,6 +1,6 @@
 /*
    This file is part of GNUnet.
-   Copyright (C) 2020 GNUnet e.V.
+   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
@@ -29,6 +29,9 @@
 #include "platform.h"
 #include "gnunet_crypto_lib.h"
 
+#include "gnunet-service-messenger_message_kind.h"
+
+#include "gnunet-service-messenger_member_session.h"
 #include "gnunet-service-messenger_tunnel.h"
 #include "messenger_api_message.h"
 
@@ -36,124 +39,43 @@
  * Handles a received info message to change the current member id to the one generated by
  * the host connected to. (all current tunnels will be informed about the id change)
  *
- * @param room Room of the message
- * @param tunnel Receiving connection
- * @param message INFO-Message
- * @param hash Hash of the message
+ * @param[in/out] room Room of the message
+ * @param[in/out] tunnel Receiving connection
+ * @param[in] message INFO-Message
+ * @param[in] hash Hash of the message
+ * @return #GNUNET_NO to not forward the message
  */
-void
+int
 recv_message_info (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
-                   struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
-
-/**
- * Handles a received join message to forward all member information to the new member if the message was
- * the direct reaction to a previous info message from this peer.
- *
- * @param room Room of the message
- * @param tunnel Receiving connection
- * @param message JOIN-Message
- * @param hash Hash of the message
- */
-void
-recv_message_join (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
-                   struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
-
-/**
- * Handles a received leave message.
- * @see handle_message_leave()
- *
- * @param room Room of the message
- * @param tunnel Receiving connection
- * @param message LEAVE-Message
- * @param hash Hash of the message
- */
-void
-recv_message_leave (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
-                    struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
-
-/**
- * Handles a received name message.
- * @see handle_message_name()
- *
- * @param room Room of the message
- * @param tunnel Receiving connection
- * @param message NAME-Message
- * @param hash Hash of the message
- */
-void
-recv_message_name (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
-                   struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
-
-/**
- * Handles a received key message.
- * @see handle_message_key()
- *
- * @param room Room of the message
- * @param tunnel Receiving connection
- * @param message KEY-Message
- * @param hash Hash of the message
- */
-void
-recv_message_key (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
-                  struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
+                   const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
 
 /**
  * Handles a received peer message to link it to its origin tunnel if the peer identity matches.
  * (the peer message and the member id can potentially be linked to the tunnel)
  *
- * TODO: This handling will only check the one given tunnel!
- *
- * @param room Room of the message
- * @param tunnel Receiving connection
- * @param message PEER-Message
- * @param hash Hash of the message
+ * @param[in/out] room Room of the message
+ * @param[in/out] tunnel Receiving connection
+ * @param[in] message PEER-Message
+ * @param[in] hash Hash of the message
+ * @return #GNUNET_YES to forward the message
  */
-void
+int
 recv_message_peer (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
-                   struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
-
-/**
- * Handles a received id message to change the tunnels linked member id if necessary.
- * (the tunnels linked member id will be changed if the sender id is matching)
- *
- * TODO: This handling will only check the one given tunnel!
- *
- * @param room Room of the message
- * @param tunnel Receiving connection
- * @param message ID-Message
- * @param hash Hash of the message
- */
-void
-recv_message_id (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
-                 struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
-
-/**
- * Handles a received miss message.
- * @see handle_message_miss()
- *
- * @param room Room of the message
- * @param tunnel Receiving connection
- * @param message MISS-Message
- * @param hash Hash of the message
- */
-void
-recv_message_miss (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
-                   struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
+                   const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
 
 /**
  * Handles a received request message by checking for the requested message and forwarding it back
  * if the message was found.
  * (this can also cause this peer to send a new request instead of only forwarding the received one)
  *
- * TODO: Requests can cause exponentially more requests!
- *
- * @param room Room of the message
- * @param tunnel Receiving connection
- * @param message REQUEST-Message
- * @param hash Hash of the message
+ * @param[in/out] room Room of the message
+ * @param[in/out] tunnel Receiving connection
+ * @param[in] message REQUEST-Message
+ * @param[in] hash Hash of the message
+ * @return #GNUNET_YES or #GNUNET_NO depending on required forwarding
  */
-void
+int
 recv_message_request (struct GNUNET_MESSENGER_SrvRoom *room, struct GNUNET_MESSENGER_SrvTunnel *tunnel,
-                      struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
+                      const struct GNUNET_MESSENGER_Message *message, const struct GNUNET_HashCode *hash);
 
 #endif //GNUNET_SERVICE_MESSENGER_MESSAGE_RECV_H