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gnupg/kbx/frontend.h

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/* frontend.h - Definitions for the keyboxd frontend
* Copyright (C) 2019 g10 Code GmbH
*
* This file is part of GnuPG.
*
* GnuPG is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 3 of the License, or
* (at your option) any later version.
*
* GnuPG 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, see <https://www.gnu.org/licenses/>.
*/
#ifndef KBX_FRONTEND_H
#define KBX_FRONTEND_H
#include "keybox-search-desc.h"
gpg_error_t kbxd_set_database (ctrl_t ctrl,
const char *filename_arg, int readonly);
void kbxd_release_session_info (ctrl_t ctrl);
gpg_error_t kbxd_rollback (void);
gpg_error_t kbxd_commit (void);
gpg_error_t kbxd_search (ctrl_t ctrl,
KEYDB_SEARCH_DESC *desc, unsigned int ndesc,
int reset);
gpg_error_t kbxd_store (ctrl_t ctrl, const void *blob, size_t bloblen,
kbx: Redefine the UBID which is now the primary fingerprint. * common/util.h (UBID_LEN): New. Use it at all places. * kbx/keybox-blob.c (create_blob_finish): Do not write the UBID item. * kbx/keybox-dump.c (print_ubib): Remove. (_keybox_dump_blob): Do not print the now removed ubid flag. * kbx/keybox-search-desc.h (struct keydb_search_desc): Use constants for the size of the ubid and grip. * kbx/keybox-search.c (blob_cmp_ubid): New. (has_ubid): Make it a simple wrapper around blob_cmp_ubid. (keybox_get_data): Add arg 'r_ubid'. * kbx/frontend.h (enum kbxd_store_modes): New. * kbx/kbxserver.c (cmd_store): Add new option --insert. * kbx/backend-cache.c (be_cache_initialize): New. (be_cache_add_resource): Call it here. * kbx/backend-kbx.c (be_kbx_seek): Remove args 'fpr' and 'fprlen'. (be_kbx_search): Get the UBID from keybox_get_data. * kbx/backend-support.c (be_fingerprint_from_blob): Replace by ... (be_ubid_from_blob): new. Change all callers. * kbx/frontend.c (kbxd_add_resource): Temporary disable the cache but use the new cache init function. (kbxd_store): Replace arg 'only_update' by 'mode'. Seek using the ubid. Take care of the mode. -- It turned out that using the hash of the entire blob was not helpful. Thus we redefine the Unique-Blob-ID (UBID) as the primary fingerprint of the blob. In case this is a v5 OpenPGP key a left truncated version of the SHA-256 hash is used; in all other cases the full SHA-1 hash. Using a SHA-256 hash does not make sense because v4 keys are and will for some time be the majority of keys and thus padding them with zeroes won't make any difference. Even if fingerprint collisions can eventually be created we will assume that the keys are bogus and that it does not make sense to store its twin also in our key storage. We can also easily extend the update code to detect a collision and reject the update. Signed-off-by: Werner Koch <wk@gnupg.org>
2019-11-28 09:39:35 +01:00
enum kbxd_store_modes mode);
gpg_error_t kbxd_delete (ctrl_t ctrl, const unsigned char *ubid);
#endif /*KBX_FRONTEND_H*/