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3 Copyright (C) 2012, 2017 GNUnet e.V.
5 GNUnet is free software: you can redistribute it and/or modify it
6 under the terms of the GNU Affero General Public License as published
7 by the Free Software Foundation, either version 3 of the License,
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 Affero General Public License for more details.
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18 SPDX-License-Identifier: AGPL3.0-or-later
22 * @file fs/gnunet-service-fs_cadet.h
23 * @brief non-anonymous file-transfer
24 * @author Christian Grothoff
26 #ifndef GNUNET_SERVICE_FS_CADET_H
27 #define GNUNET_SERVICE_FS_CADET_H
30 * Handle for a request that is going out via cadet API.
32 struct GSF_CadetRequest;
36 * Function called with a reply from the cadet.
39 * @param type type of the block, ANY on error
40 * @param expiration expiration time for the block
41 * @param data_size number of bytes in @a data, 0 on error
42 * @param data reply block data, NULL on error
45 (*GSF_CadetReplyProcessor)(void *cls,
46 enum GNUNET_BLOCK_Type type,
47 struct GNUNET_TIME_Absolute expiration,
53 * Look for a block by directly contacting a particular peer.
55 * @param target peer that should have the block
56 * @param query hash to query for the block
57 * @param type desired type for the block
58 * @param proc function to call with result
59 * @param proc_cls closure for @a proc
60 * @return handle to cancel the operation
62 struct GSF_CadetRequest *
63 GSF_cadet_query (const struct GNUNET_PeerIdentity *target,
64 const struct GNUNET_HashCode *query,
65 enum GNUNET_BLOCK_Type type,
66 GSF_CadetReplyProcessor proc,
70 * Function called on each active cadets to shut them down.
73 * @param key target peer, unused
74 * @param value the `struct CadetHandle` to destroy
75 * @return #GNUNET_YES (continue to iterate)
78 GSF_cadet_release_clients (void *cls,
79 const struct GNUNET_PeerIdentity *key,
84 * Cancel an active request; must not be called after 'proc'
87 * @param sr request to cancel
90 GSF_cadet_query_cancel (struct GSF_CadetRequest *sr);
94 * Initialize subsystem for non-anonymous file-sharing.
97 GSF_cadet_start_server (void);
101 * Shutdown subsystem for non-anonymous file-sharing.
104 GSF_cadet_stop_server (void);
107 * Cadet channel for creating outbound channels.
109 extern struct GNUNET_CADET_Handle *cadet_handle;
112 * Map from peer identities to 'struct CadetHandles' with cadet
113 * channels to those peers.
115 extern struct GNUNET_CONTAINER_MultiPeerMap *cadet_map;
118 GNUNET_NETWORK_STRUCT_BEGIN
121 * Query from one peer, asking the other for CHK-data.
123 struct CadetQueryMessage
126 * Type is GNUNET_MESSAGE_TYPE_FS_CADET_QUERY.
128 struct GNUNET_MessageHeader header;
131 * Block type must be DBLOCK or IBLOCK.
133 uint32_t type GNUNET_PACKED;
136 * Query hash from CHK (hash of encrypted block).
138 struct GNUNET_HashCode query;
143 * Reply to a CadetQueryMessage.
145 struct CadetReplyMessage
148 * Type is GNUNET_MESSAGE_TYPE_FS_CADET_REPLY.
150 struct GNUNET_MessageHeader header;
153 * Block type must be DBLOCK or IBLOCK.
155 uint32_t type GNUNET_PACKED;
158 * Expiration time for the block.
160 struct GNUNET_TIME_AbsoluteNBO expiration;
162 /* followed by the encrypted block */
165 GNUNET_NETWORK_STRUCT_END