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/*
This file is part of GNUnet.
Copyright (C) 2020 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/messenger_api_handle.c
* @brief messenger api: client implementation of GNUnet MESSENGER service
*/
#include "messenger_api_handle.h"
struct GNUNET_MESSENGER_Handle*
create_handle (const struct GNUNET_CONFIGURATION_Handle *cfg, GNUNET_MESSENGER_IdentityCallback identity_callback,
void *identity_cls, GNUNET_MESSENGER_MessageCallback msg_callback, void *msg_cls)
{
struct GNUNET_MESSENGER_Handle *handle = GNUNET_new(struct GNUNET_MESSENGER_Handle);
handle->cfg = cfg;
handle->mq = NULL;
handle->identity_callback = identity_callback;
handle->identity_cls = identity_cls;
handle->msg_callback = msg_callback;
handle->msg_cls = msg_cls;
handle->name = NULL;
handle->pubkey = NULL;
handle->reconnect_time = GNUNET_TIME_relative_get_zero_ ();
handle->reconnect_task = NULL;
handle->rooms = GNUNET_CONTAINER_multihashmap_create (8, GNUNET_NO);
handle->contacts = GNUNET_CONTAINER_multihashmap_create (8, GNUNET_NO);
return handle;
}
static int
iterate_destroy_room (void *cls, const struct GNUNET_HashCode *key, void *value)
{
struct GNUNET_MESSENGER_Room *room = value;
destroy_room (room);
return GNUNET_YES;
}
static int
iterate_destroy_contact (void *cls, const struct GNUNET_HashCode *key, void *value)
{
struct GNUNET_MESSENGER_Contact *contact = value;
destroy_contact (contact);
return GNUNET_YES;
}
void
destroy_handle (struct GNUNET_MESSENGER_Handle *handle)
{
if (handle->reconnect_task)
GNUNET_SCHEDULER_cancel (handle->reconnect_task);
if (handle->mq)
GNUNET_MQ_destroy (handle->mq);
if (handle->name)
GNUNET_free(handle->name);
if (handle->pubkey)
GNUNET_free(handle->pubkey);
if (handle->rooms)
{
GNUNET_CONTAINER_multihashmap_iterate (handle->rooms, iterate_destroy_room, NULL);
GNUNET_CONTAINER_multihashmap_destroy (handle->rooms);
}
if (handle->contacts)
{
GNUNET_CONTAINER_multihashmap_iterate (handle->contacts, iterate_destroy_contact, NULL);
GNUNET_CONTAINER_multihashmap_destroy (handle->contacts);
}
GNUNET_free(handle->name);
}
void
set_handle_name (struct GNUNET_MESSENGER_Handle *handle, const char *name)
{
if (handle->name)
GNUNET_free(handle->name);
handle->name = name? GNUNET_strdup(name) : NULL;
}
const char*
get_handle_name (const struct GNUNET_MESSENGER_Handle *handle)
{
return handle->name;
}
void
set_handle_key (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_IDENTITY_PublicKey *pubkey)
{
if (!handle->pubkey)
handle->pubkey = GNUNET_new(struct GNUNET_IDENTITY_PublicKey);
GNUNET_memcpy(handle->pubkey, pubkey, sizeof(*pubkey));
}
const struct GNUNET_IDENTITY_PublicKey*
get_handle_key (const struct GNUNET_MESSENGER_Handle *handle)
{
if (!handle->pubkey)
{
struct GNUNET_IDENTITY_Ego *anonymous = GNUNET_IDENTITY_ego_get_anonymous ();
static struct GNUNET_IDENTITY_PublicKey pubkey;
GNUNET_IDENTITY_ego_get_public_key (anonymous, &pubkey);
return &pubkey;
}
return handle->pubkey;
}
struct GNUNET_MESSENGER_Contact*
get_handle_contact_by_pubkey (const struct GNUNET_MESSENGER_Handle *handle,
const struct GNUNET_IDENTITY_PublicKey *pubkey)
{
struct GNUNET_HashCode hash;
GNUNET_CRYPTO_hash (pubkey, sizeof(*pubkey), &hash);
struct GNUNET_MESSENGER_Contact *contact = GNUNET_CONTAINER_multihashmap_get (handle->contacts, &hash);
if (contact)
return contact;
contact = create_contact (pubkey);
if (GNUNET_OK == GNUNET_CONTAINER_multihashmap_put (handle->contacts, &hash, contact,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST))
return contact;
destroy_contact (contact);
return NULL;
}
void
swap_handle_contact_by_pubkey (struct GNUNET_MESSENGER_Handle *handle, struct GNUNET_MESSENGER_Contact *contact,
const struct GNUNET_IDENTITY_PublicKey *pubkey)
{
const struct GNUNET_HashCode *hash = get_contact_id_from_key (contact);
if (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (handle->contacts, hash, contact))
{
GNUNET_memcpy(&(contact->public_key), pubkey, sizeof(*pubkey));
hash = get_contact_id_from_key (contact);
GNUNET_CONTAINER_multihashmap_put (handle->contacts, hash, contact,
GNUNET_CONTAINER_MULTIHASHMAPOPTION_UNIQUE_FAST);
}
}
void
open_handle_room (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key)
{
struct GNUNET_MESSENGER_Room *room = GNUNET_CONTAINER_multihashmap_get (handle->rooms, key);
if (room)
room->opened = GNUNET_YES;
}
void
entry_handle_room_at (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_PeerIdentity *door,
const struct GNUNET_HashCode *key)
{
struct GNUNET_MESSENGER_Room *room = GNUNET_CONTAINER_multihashmap_get (handle->rooms, key);
if (room)
add_to_list_tunnels (&(room->entries), door);
}
void
close_handle_room (struct GNUNET_MESSENGER_Handle *handle, const struct GNUNET_HashCode *key)
{
struct GNUNET_MESSENGER_Room *room = GNUNET_CONTAINER_multihashmap_get (handle->rooms, key);
if ((room) && (GNUNET_YES == GNUNET_CONTAINER_multihashmap_remove (handle->rooms, key, room)))
destroy_room (room);
}
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