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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, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
02111-1307, USA. */
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <stdlib.h>
#include <assert.h>
#include <errno.h>
#include "util.h"
#include "context.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;
}
/* Add KEY to list of signers in CTX. */
gpgme_error_t
gpgme_signers_add (gpgme_ctx_t ctx, const gpgme_key_t key)
{
if (!ctx || !key)
return 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 gpg_error_from_errno (errno);
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;
return 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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