-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, 170 insertions, 0 deletions

diff --git a/src/messenger/testing_messenger_barrier.c b/src/messenger/testing_messenger_barrier.c
new file mode 100644
index 000000000..618d255b7
--- /dev/null
+++ b/src/messenger/testing_messenger_barrier.c
@@ -0,0 +1,170 @@
+/*
+   This file is part of GNUnet.
+   Copyright (C) 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
+   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
+ */
+/**
+ * @file messenger/testing_messenger_barrier.c
+ * @author Tobias Frisch
+ * @brief Pseudo-barriers for simple event handling
+ */
+
+#include "testing_messenger_barrier.h"
+
+struct GNUNET_BarrierHandle
+{
+  unsigned int requirement;
+  GNUNET_BarrierStatusCallback cb;
+  void *cls;
+
+  struct GNUNET_BarrierWaitHandle *head;
+  struct GNUNET_BarrierWaitHandle *tail;
+
+  struct GNUNET_SCHEDULER_Task* task;
+};
+
+struct GNUNET_BarrierHandle*
+GNUNET_init_barrier (unsigned int requirement,
+                     GNUNET_BarrierStatusCallback cb,
+                     void *cb_cls)
+{
+  if (0 == requirement)
+    return NULL;
+
+  struct GNUNET_BarrierHandle *barrier = GNUNET_new(struct GNUNET_BarrierHandle);
+
+  if (!barrier)
+    return NULL;
+
+  barrier->requirement = requirement;
+  barrier->cb = cb;
+  barrier->cls = cb_cls;
+  barrier->head = NULL;
+  barrier->tail = NULL;
+  barrier->task = NULL;
+
+  return barrier;
+}
+
+static void
+exit_status (struct GNUNET_BarrierHandle *barrier, int status);
+
+static void
+cancel_barrier (void *cls)
+{
+  exit_status ((struct GNUNET_BarrierHandle*) cls, GNUNET_SYSERR);
+}
+
+static void
+complete_barrier (void *cls)
+{
+  exit_status ((struct GNUNET_BarrierHandle*) cls, GNUNET_OK);
+}
+
+void
+GNUNET_cancel_barrier (struct GNUNET_BarrierHandle *barrier)
+{
+  if ((!barrier) || (barrier->task))
+    return;
+
+  barrier->task = GNUNET_SCHEDULER_add_now(cancel_barrier, barrier);
+}
+
+struct GNUNET_BarrierWaitHandle
+{
+  GNUNET_BarrierWaitStatusCallback cb;
+  void *cls;
+
+  struct GNUNET_BarrierWaitHandle *prev;
+  struct GNUNET_BarrierWaitHandle *next;
+
+  struct GNUNET_BarrierHandle *barrier;
+};
+
+static void
+exit_status (struct GNUNET_BarrierHandle *barrier, int status)
+{
+  struct GNUNET_BarrierWaitHandle *waiting = barrier->head;
+  while (waiting)
+  {
+    struct GNUNET_BarrierWaitHandle *current = waiting;
+
+    if (current->cb)
+      current->cb(current->cls, current, status);
+
+    waiting = waiting->next;
+
+    GNUNET_CONTAINER_DLL_remove(barrier->head, barrier->tail, current);
+    GNUNET_free(current);
+  }
+
+  if (barrier->cb)
+    barrier->cb(barrier->cls, barrier, status);
+
+  GNUNET_free(barrier);
+}
+
+struct GNUNET_BarrierWaitHandle*
+GNUNET_wait_barrier (struct GNUNET_BarrierHandle *barrier,
+                     GNUNET_BarrierWaitStatusCallback cb,
+                     void *cb_cls)
+{
+  if ((!barrier) || (0 == barrier->requirement))
+    return NULL;
+
+  struct GNUNET_BarrierWaitHandle *waiting = GNUNET_new(struct GNUNET_BarrierWaitHandle);
+
+  if (!waiting)
+    return NULL;
+
+  waiting->cb = cb;
+  waiting->cls = cb_cls;
+  waiting->prev = NULL;
+  waiting->next = NULL;
+  waiting->barrier = barrier;
+
+  GNUNET_CONTAINER_DLL_insert_tail(barrier->head, barrier->tail, waiting);
+  barrier->requirement--;
+
+  if ((barrier->requirement == 0) && (!barrier->task))
+    barrier->task = GNUNET_SCHEDULER_add_now(complete_barrier, barrier);
+
+  return waiting;
+}
+
+void
+GNUNET_cancel_wait_barrier (struct GNUNET_BarrierWaitHandle *waiting)
+{
+  if (!waiting)
+    return;
+
+  struct GNUNET_BarrierHandle *barrier = waiting->barrier;
+
+  if (!barrier)
+    return;
+
+  if ((barrier->requirement == 0) && (barrier->task))
+  {
+    GNUNET_SCHEDULER_cancel(barrier->task);
+    barrier->task = NULL;
+  }
+
+  barrier->requirement++;
+  GNUNET_CONTAINER_DLL_remove(barrier->head, barrier->tail, waiting);
+
+  GNUNET_free(waiting);
+}