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/* signers.c - Maintain signer sets.
* Copyright (C) 2001 Werner Koch (dd9jn)
* Copyright (C) 2001, 2002, 2003, 2004 g10 Code GmbH
*
* This file is part of GPGME.
*
* GPGME 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.
*
* GPGME 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 program; if not, see <https://gnu.org/licenses/>.
* SPDX-License-Identifier: LGPL-2.1-or-later
*/
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include "gpgme.h"
#include "util.h"
#include "context.h"
#include "debug.h"
/* Delete all signers from CTX. */
void
_gpgme_signers_clear (gpgme_ctx_t ctx)
{
unsigned int i;
if (!ctx || !ctx->signers)
return;
for (i = 0; i < ctx->signers_len; i++)
{
assert (ctx->signers[i]);
gpgme_key_unref (ctx->signers[i]);
ctx->signers[i] = NULL;
}
ctx->signers_len = 0;
}
void
gpgme_signers_clear (gpgme_ctx_t ctx)
{
TRACE (DEBUG_CTX, "gpgme_signers_clear", ctx, "");
_gpgme_signers_clear (ctx);
}
/* Add KEY to list of signers in CTX. */
gpgme_error_t
gpgme_signers_add (gpgme_ctx_t ctx, const gpgme_key_t key)
{
TRACE_BEG (DEBUG_CTX, "gpgme_signers_add", ctx,
"key=%p (%s)", key, (key && key->subkeys && key->subkeys->fpr) ?
key->subkeys->fpr : "invalid");
if (!ctx || !key)
return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
if (ctx->signers_len == ctx->signers_size)
{
gpgme_key_t *newarr;
int n = ctx->signers_size + 5;
int j;
newarr = realloc (ctx->signers, n * sizeof (*newarr));
if (!newarr)
return TRACE_ERR (gpg_error_from_syserror ());
for (j = ctx->signers_size; j < n; j++)
newarr[j] = NULL;
ctx->signers = newarr;
ctx->signers_size = n;
}
gpgme_key_ref (key);
ctx->signers[ctx->signers_len++] = key;
TRACE_SUC ("");
return 0;
}
/* Return the number of signers in CTX. */
unsigned int
gpgme_signers_count (const gpgme_ctx_t ctx)
{
return ctx? ctx->signers_len : 0;
}
/* Return the SEQth signer's key in CTX with one reference. */
gpgme_key_t
gpgme_signers_enum (const gpgme_ctx_t ctx, int seq)
{
unsigned int seqno;
if (!ctx || seq < 0)
return NULL;
seqno = (unsigned int) seq;
if (seqno >= ctx->signers_len)
return NULL;
gpgme_key_ref (ctx->signers[seqno]);
return ctx->signers[seqno];
}

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