34e221a58b
We were including gcrypt-util.[ch] by hand in the few places where it was used. Create a convenience library to avoid compiling the same files multiple times. v2: - use a separate static library instead of mergin into libbasic
73 lines
2 KiB
C
73 lines
2 KiB
C
/* SPDX-License-Identifier: LGPL-2.1+ */
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/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2012 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 of the License, or
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(at your option) any later version.
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systemd is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#if HAVE_GCRYPT
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#include <gcrypt.h>
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#include "gcrypt-util.h"
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#include "hexdecoct.h"
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void initialize_libgcrypt(bool secmem) {
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const char *p;
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if (gcry_control(GCRYCTL_INITIALIZATION_FINISHED_P))
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return;
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p = gcry_check_version("1.4.5");
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assert(p);
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/* Turn off "secmem". Clients which wish to make use of this
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* feature should initialize the library manually */
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if (!secmem)
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gcry_control(GCRYCTL_DISABLE_SECMEM);
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gcry_control(GCRYCTL_INITIALIZATION_FINISHED, 0);
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}
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int string_hashsum(const char *s, size_t len, int md_algorithm, char **out) {
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gcry_md_hd_t md = NULL;
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size_t hash_size;
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void *hash;
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char *enc;
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initialize_libgcrypt(false);
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hash_size = gcry_md_get_algo_dlen(md_algorithm);
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assert(hash_size > 0);
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gcry_md_open(&md, md_algorithm, 0);
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if (!md)
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return -EIO;
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gcry_md_write(md, s, len);
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hash = gcry_md_read(md, 0);
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if (!hash)
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return -EIO;
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enc = hexmem(hash, hash_size);
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if (!enc)
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return -ENOMEM;
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*out = enc;
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return 0;
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}
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#endif
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