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/* signers.c - Maintain signer sets.
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Copyright (C) 2001 Werner Koch (dd9jn)
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Copyright (C) 2001, 2002, 2003, 2004 g10 Code GmbH
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This file is part of GPGME.
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GPGME 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
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published by the Free Software Foundation; either version 2.1 of
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the License, or (at your option) any later version.
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GPGME 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
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License along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
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02110-1301, USA. */
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#if HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <assert.h>
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#include <errno.h>
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#include "util.h"
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#include "context.h"
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/* Delete all signers from CTX. */
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void
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gpgme_signers_clear (gpgme_ctx_t ctx)
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{
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unsigned int i;
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if (!ctx || !ctx->signers)
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return;
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for (i = 0; i < ctx->signers_len; i++)
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{
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assert (ctx->signers[i]);
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gpgme_key_unref (ctx->signers[i]);
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ctx->signers[i] = NULL;
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}
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ctx->signers_len = 0;
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}
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/* Add KEY to list of signers in CTX. */
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gpgme_error_t
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gpgme_signers_add (gpgme_ctx_t ctx, const gpgme_key_t key)
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{
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if (!ctx || !key)
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return gpg_error (GPG_ERR_INV_VALUE);
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if (ctx->signers_len == ctx->signers_size)
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{
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gpgme_key_t *newarr;
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int n = ctx->signers_size + 5;
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int j;
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newarr = realloc (ctx->signers, n * sizeof (*newarr));
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if (!newarr)
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return gpg_error_from_errno (errno);
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for (j = ctx->signers_size; j < n; j++)
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newarr[j] = NULL;
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ctx->signers = newarr;
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ctx->signers_size = n;
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}
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gpgme_key_ref (key);
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ctx->signers[ctx->signers_len++] = key;
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return 0;
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}
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/* Return the SEQth signer's key in CTX with one reference. */
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gpgme_key_t
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gpgme_signers_enum (const gpgme_ctx_t ctx, int seq)
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{
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unsigned int seqno;
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if (!ctx || seq < 0)
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return NULL;
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seqno = (unsigned int) seq;
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if (seqno >= ctx->signers_len)
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return NULL;
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gpgme_key_ref (ctx->signers[seqno]);
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return ctx->signers[seqno];
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}
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