-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, 37 insertions, 7 deletions

diff --git a/src/messenger/messenger_api_contact.c b/src/messenger/messenger_api_contact.c
index 9a242aa00..04e1f60c1 100644
--- a/src/messenger/messenger_api_contact.c
+++ b/src/messenger/messenger_api_contact.c
@@ -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
@@ -28,9 +28,12 @@
 struct GNUNET_MESSENGER_Contact*
 create_contact (const struct GNUNET_IDENTITY_PublicKey *key)
 {
+  GNUNET_assert(key);
+
   struct GNUNET_MESSENGER_Contact *contact = GNUNET_new(struct GNUNET_MESSENGER_Contact);
 
   contact->name = NULL;
+  contact->rc = 0;
 
   GNUNET_memcpy(&(contact->public_key), key, sizeof(contact->public_key));
 
@@ -40,6 +43,8 @@ create_contact (const struct GNUNET_IDENTITY_PublicKey *key)
 void
 destroy_contact (struct GNUNET_MESSENGER_Contact *contact)
 {
+  GNUNET_assert(contact);
+
   if (contact->name)
     GNUNET_free(contact->name);
 
@@ -49,30 +54,55 @@ destroy_contact (struct GNUNET_MESSENGER_Contact *contact)
 const char*
 get_contact_name (const struct GNUNET_MESSENGER_Contact *contact)
 {
+  GNUNET_assert(contact);
+
   return contact->name;
 }
 
 void
 set_contact_name (struct GNUNET_MESSENGER_Contact *contact, const char *name)
 {
+  GNUNET_assert(contact);
+
   if (contact->name)
     GNUNET_free(contact->name);
 
-  contact->name = name? GNUNET_strdup(name) : NULL;
+  contact->name = name ? GNUNET_strdup(name) : NULL;
 }
 
 const struct GNUNET_IDENTITY_PublicKey*
 get_contact_key (const struct GNUNET_MESSENGER_Contact *contact)
 {
+  GNUNET_assert(contact);
+
   return &(contact->public_key);
 }
 
-const struct GNUNET_HashCode*
-get_contact_id_from_key (const struct GNUNET_MESSENGER_Contact *contact)
+void
+increase_contact_rc (struct GNUNET_MESSENGER_Contact *contact)
 {
-  static struct GNUNET_HashCode id;
+  GNUNET_assert(contact);
+
+  contact->rc++;
+}
 
-  GNUNET_CRYPTO_hash (&(contact->public_key), sizeof(contact->public_key), &id);
+int
+decrease_contact_rc (struct GNUNET_MESSENGER_Contact *contact)
+{
+  GNUNET_assert(contact);
+
+  if (contact->rc > 0)
+    contact->rc--;
+
+  return contact->rc ? GNUNET_NO : GNUNET_YES;
+}
+
+void
+get_context_from_member (const struct GNUNET_HashCode *key, const struct GNUNET_ShortHashCode *id,
+                         struct GNUNET_HashCode *context)
+{
+  GNUNET_assert((key) && (id) && (context));
 
-  return &id;
+  GNUNET_CRYPTO_hash (id, sizeof(*id), context);
+  GNUNET_CRYPTO_hash_xor (key, context, context);
 }