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/*
This file is part of tgl-library
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library 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
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
Copyright Ben Wiederhake 2015
*/
#include "config.h"
#ifdef TGL_AVOID_OPENSSL
#include <gcrypt.h>
#include "../tgl.h"
#include "../tgl-inner.h"
#include "err.h"
void TGLC_err_print_errors_fp (FILE *fp) {
// Can't print anything meaningful, so don't.
(void) fp;
}
int TGLC_init (struct tgl_state *TLS) {
vlogprintf (E_NOTICE, "Init gcrypt\n");
// https://gnupg.org/documentation/manuals/gcrypt/Initializing-the-library.html
// https://lists.gnupg.org/pipermail/gcrypt-devel/2003-August/000458.html
if (gcry_control (GCRYCTL_INITIALIZATION_FINISHED_P)) {
// Someone else already *completed* it.
vlogprintf (E_NOTICE, "Init gcrypt: already initialized -- good\n");
return 0;
}
if (gcry_control (GCRYCTL_ANY_INITIALIZATION_P)) {
// Someone else already *started* it without *completing*.
vlogprintf (E_WARNING, "Init gcrypt: already started *but not completed* by third party -- bad\n");
vlogprintf (E_WARNING, "Init gcrypt: ... not trying to init gcrypt then.\n");
return 0;
}
if (!gcry_check_version (GCRYPT_VERSION)) {
vlogprintf (E_ERROR, "Init gcrypt: version mismatch!\n");
return -1;
}
gcry_error_t err = gcry_control (GCRYCTL_DISABLE_SECMEM, NULL, 0);
if (err != GPG_ERR_NO_ERROR) {
vlogprintf (E_ERROR, "Init gcrypt: secmem failed?!\n");
return -1;
}
/* Tell Libgcrypt that initialization has completed. */
err = gcry_control (GCRYCTL_INITIALIZATION_FINISHED, 0);
if (err != GPG_ERR_NO_ERROR) {
vlogprintf (E_ERROR, "Init gcrypt: init failed?!\n");
return -1;
}
return 0;
}
#endif
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