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0c5028faea
Before that, calls to 'HashSink::currentHash()' would eventually lead to
a segfault because the underlying gcrypt handle has been closed. (Note
that this method is only used via 'importPaths' and 'exportPath', though.)
* nix/libutil/gcrypt-hash.hh (struct guix_hash_context): Add a
constructor and a copy constructor; move out of 'extern "C"'.
* nix/libutil/gcrypt-hash.cc (guix_hash_final): Clear 'md_handle' upon
exit.
* nix/sync-with-upstream (top_srcdir): Change hash.{cc,hh} to read
'struct Ctx' instead of 'union Ctx'.
51 lines
1.4 KiB
C++
51 lines
1.4 KiB
C++
/* GNU Guix --- Functional package management for GNU
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Copyright (C) 2012, 2013 Ludovic Courtès <ludo@gnu.org>
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This file is part of GNU Guix.
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GNU Guix is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or (at
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your option) any later version.
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GNU Guix 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
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GNU Guix. If not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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#include <gcrypt-hash.hh>
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#include <assert.h>
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extern "C" {
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void
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guix_hash_init (struct guix_hash_context *ctx, int algo)
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{
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gcry_error_t err;
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err = gcry_md_open (&ctx->md_handle, algo, 0);
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assert (err == GPG_ERR_NO_ERROR);
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}
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void
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guix_hash_update (struct guix_hash_context *ctx, const void *buffer, size_t len)
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{
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gcry_md_write (ctx->md_handle, buffer, len);
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}
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void
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guix_hash_final (void *resbuf, struct guix_hash_context *ctx,
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int algo)
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{
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memcpy (resbuf, gcry_md_read (ctx->md_handle, algo),
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gcry_md_get_algo_dlen (algo));
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gcry_md_close (ctx->md_handle);
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ctx->md_handle = NULL;
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}
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}
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