-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, 75 insertions, 1 deletions

diff --git a/src/messenger/gnunet-service-messenger_list_messages.c b/src/messenger/gnunet-service-messenger_list_messages.c
index c4f1f7043..bb6086e41 100644
--- a/src/messenger/gnunet-service-messenger_list_messages.c
+++ b/src/messenger/gnunet-service-messenger_list_messages.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
@@ -54,6 +54,8 @@ clear_list_messages (struct GNUNET_MESSENGER_ListMessages *messages)
 void
 add_to_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const struct GNUNET_HashCode *hash)
 {
+  GNUNET_assert((messages) && (hash));
+
   struct GNUNET_MESSENGER_ListMessage *element = GNUNET_new(struct GNUNET_MESSENGER_ListMessage);
 
   GNUNET_memcpy(&(element->hash), hash, sizeof(struct GNUNET_HashCode));
@@ -62,8 +64,21 @@ add_to_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const stru
 }
 
 void
+copy_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const struct GNUNET_MESSENGER_ListMessages *origin)
+{
+  GNUNET_assert((messages) && (origin));
+
+  struct GNUNET_MESSENGER_ListMessage *element;
+
+  for (element = origin->head; element; element = element->next)
+    add_to_list_messages (messages, &(element->hash));
+}
+
+void
 remove_from_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const struct GNUNET_HashCode *hash)
 {
+  GNUNET_assert((messages) && (hash));
+
   struct GNUNET_MESSENGER_ListMessage *element;
 
   for (element = messages->head; element; element = element->next)
@@ -74,3 +89,62 @@ remove_from_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const
       break;
     }
 }
+
+void
+load_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const char *path)
+{
+  GNUNET_assert((messages) && (path));
+
+  if (GNUNET_YES != GNUNET_DISK_file_test (path))
+    return;
+
+  enum GNUNET_DISK_AccessPermissions permission = (GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
+
+  struct GNUNET_DISK_FileHandle *handle = GNUNET_DISK_file_open(
+      path, GNUNET_DISK_OPEN_READ, permission
+  );
+
+  if (!handle)
+    return;
+
+  GNUNET_DISK_file_seek(handle, 0, GNUNET_DISK_SEEK_SET);
+
+  struct GNUNET_HashCode hash;
+  ssize_t len;
+
+  do {
+    len = GNUNET_DISK_file_read(handle, &hash, sizeof(hash));
+
+    if (len != sizeof(hash))
+      break;
+
+    add_to_list_messages(messages, &hash);
+  } while (len == sizeof(hash));
+
+  GNUNET_DISK_file_close(handle);
+}
+
+void
+save_list_messages (struct GNUNET_MESSENGER_ListMessages *messages, const char *path)
+{
+  GNUNET_assert((messages) && (path));
+
+  enum GNUNET_DISK_AccessPermissions permission = (GNUNET_DISK_PERM_USER_READ | GNUNET_DISK_PERM_USER_WRITE);
+
+  struct GNUNET_DISK_FileHandle *handle = GNUNET_DISK_file_open(
+      path, GNUNET_DISK_OPEN_CREATE | GNUNET_DISK_OPEN_WRITE, permission
+  );
+
+  if (!handle)
+    return;
+
+  GNUNET_DISK_file_seek(handle, 0, GNUNET_DISK_SEEK_SET);
+
+  struct GNUNET_MESSENGER_ListMessage *element;
+
+  for (element = messages->head; element; element = element->next)
+    GNUNET_DISK_file_write(handle, &(element->hash), sizeof(element->hash));
+
+  GNUNET_DISK_file_sync(handle);
+  GNUNET_DISK_file_close(handle);
+}