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- /*
- This file is part of GNUnet.
- Copyright (C) 2012-2014, 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
- */
- /**
- * @file set/seti.h
- * @brief messages used for the set intersection api
- * @author Florian Dold
- * @author Christian Grothoff
- */
- #ifndef SETI_H
- #define SETI_H
- #include "platform.h"
- #include "gnunet_common.h"
- #include "gnunet_set_service.h"
- GNUNET_NETWORK_STRUCT_BEGIN
- /**
- * Message sent by the client to the service to ask starting
- * a new set to perform operations with.
- */
- struct GNUNET_SETI_CreateMessage
- {
- /**
- * Type: #GNUNET_MESSAGE_TYPE_SETI_CREATE
- */
- struct GNUNET_MessageHeader header;
- };
- /**
- * Message sent by the client to the service to start listening for
- * incoming requests to perform a certain type of set operation for a
- * certain type of application.
- */
- struct GNUNET_SETI_ListenMessage
- {
- /**
- * Type: #GNUNET_MESSAGE_TYPE_SETI_LISTEN
- */
- struct GNUNET_MessageHeader header;
- /**
- * Operation type, values of `enum GNUNET_SETI_OperationType`
- */
- uint32_t operation GNUNET_PACKED;
- /**
- * application id
- */
- struct GNUNET_HashCode app_id;
- };
- /**
- * Message sent by a listening client to the service to accept
- * performing the operation with the other peer.
- */
- struct GNUNET_SETI_AcceptMessage
- {
- /**
- * Type: #GNUNET_MESSAGE_TYPE_SETI_ACCEPT
- */
- struct GNUNET_MessageHeader header;
- /**
- * ID of the incoming request we want to accept.
- */
- uint32_t accept_reject_id GNUNET_PACKED;
- /**
- * Request ID to identify responses.
- */
- uint32_t request_id GNUNET_PACKED;
- /**
- * Return the intersection (1), instead of the elements to
- * remove / the delta (0), in NBO.
- */
- uint32_t return_intersection;
- };
- /**
- * Message sent by a listening client to the service to reject
- * performing the operation with the other peer.
- */
- struct GNUNET_SETI_RejectMessage
- {
- /**
- * Type: #GNUNET_MESSAGE_TYPE_SETI_REJECT
- */
- struct GNUNET_MessageHeader header;
- /**
- * ID of the incoming request we want to reject.
- */
- uint32_t accept_reject_id GNUNET_PACKED;
- };
- /**
- * A request for an operation with another client.
- */
- struct GNUNET_SETI_RequestMessage
- {
- /**
- * Type: #GNUNET_MESSAGE_TYPE_SETI_REQUEST.
- */
- struct GNUNET_MessageHeader header;
- /**
- * ID of the to identify the request when accepting or
- * rejecting it.
- */
- uint32_t accept_id GNUNET_PACKED;
- /**
- * Identity of the requesting peer.
- */
- struct GNUNET_PeerIdentity peer_id;
- /* rest: context message, that is, application-specific
- message to convince listener to pick up */
- };
- /**
- * Message sent by client to service to initiate a set operation as a
- * client (not as listener). A set (which determines the operation
- * type) must already exist in association with this client.
- */
- struct GNUNET_SETI_EvaluateMessage
- {
- /**
- * Type: #GNUNET_MESSAGE_TYPE_SETI_EVALUATE
- */
- struct GNUNET_MessageHeader header;
- /**
- * Id of our set to evaluate, chosen implicitly by the client when it
- * calls #GNUNET_SETI_commit().
- */
- uint32_t request_id GNUNET_PACKED;
- /**
- * Peer to evaluate the operation with
- */
- struct GNUNET_PeerIdentity target_peer;
- /**
- * Application id
- */
- struct GNUNET_HashCode app_id;
- /**
- * Return the intersection (1), instead of the elements to
- * remove / the delta (0), in NBO.
- */
- uint32_t return_intersection;
- /* rest: context message, that is, application-specific
- message to convince listener to pick up */
- };
- /**
- * Message sent by the service to the client to indicate an
- * element that is removed (set intersection) or added
- * (set union) or part of the final result, depending on
- * options specified for the operation.
- */
- struct GNUNET_SETI_ResultMessage
- {
- /**
- * Type: #GNUNET_MESSAGE_TYPE_SETI_RESULT
- */
- struct GNUNET_MessageHeader header;
- /**
- * Current set size.
- */
- uint64_t current_size;
- /**
- * id the result belongs to
- */
- uint32_t request_id GNUNET_PACKED;
- /**
- * Was the evaluation successful? Contains
- * an `enum GNUNET_SETI_Status` in NBO.
- */
- uint16_t result_status GNUNET_PACKED;
- /**
- * Type of the element attachted to the message, if any.
- */
- uint16_t element_type GNUNET_PACKED;
- /* rest: the actual element */
- };
- /**
- * Message sent by client to the service to add an element to the set.
- */
- struct GNUNET_SETI_ElementMessage
- {
- /**
- * Type: #GNUNET_MESSAGE_TYPE_SETI_ADD.
- */
- struct GNUNET_MessageHeader header;
- /**
- * Type of the element to add or remove.
- */
- uint16_t element_type GNUNET_PACKED;
- /**
- * For alignment, always zero.
- */
- uint16_t reserved GNUNET_PACKED;
- /* rest: the actual element */
- };
- /**
- * Sent to the service by the client
- * in order to cancel a set operation.
- */
- struct GNUNET_SETI_CancelMessage
- {
- /**
- * Type: #GNUNET_MESSAGE_TYPE_SETI_CANCEL
- */
- struct GNUNET_MessageHeader header;
- /**
- * ID of the request we want to cancel.
- */
- uint32_t request_id GNUNET_PACKED;
- };
- GNUNET_NETWORK_STRUCT_END
- #endif
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