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/* queryswdb.c - Access to the SWDB file
* Copyright (C) 2016 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://www.gnu.org/licenses/>.
*/
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <assert.h>
#include "gpgme.h"
#include "debug.h"
#include "context.h"
#include "ops.h"
typedef struct
{
struct _gpgme_op_query_swdb_result result;
} *op_data_t;
static void
release_op_data (void *hook)
{
op_data_t opd = (op_data_t) hook;
gpgme_query_swdb_result_t result = &opd->result;
assert (!result->next);
free (result->name);
free (result->iversion);
free (result->version);
}
gpgme_query_swdb_result_t
gpgme_op_query_swdb_result (gpgme_ctx_t ctx)
{
void *hook;
op_data_t opd;
gpgme_error_t err;
TRACE_BEG (DEBUG_CTX, "gpgme_op_query_swdb_result", ctx);
err = _gpgme_op_data_lookup (ctx, OPDATA_QUERY_SWDB, &hook, -1, NULL);
opd = hook;
if (err || !opd)
{
TRACE_SUC0 ("result=(null)");
return NULL;
}
TRACE_SUC1 ("result=%p", &opd->result);
return &opd->result;
}
/* Query the swdb for software package NAME and check against the
* installed version given by IVERSION. If IVERSION is NULL a check
* is only done if GPGME can figure out the version by itself
* (e.g. for "gpgme" or "gnupg"). RESERVED should be 0.
*
* Note that we only implemented the synchronous variant of this
* function but the API is prepared for an asynchronous variant.
*/
gpgme_error_t
gpgme_op_query_swdb (gpgme_ctx_t ctx, const char *name, const char *iversion,
unsigned int reserved)
{
gpgme_error_t err;
void *hook;
op_data_t opd;
TRACE_BEG2 (DEBUG_CTX, "gpgme_op_query_swdb", ctx,
"name=%s, iversion=%a", name, iversion);
if (!ctx || reserved)
return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
if (ctx->protocol != GPGME_PROTOCOL_GPGCONF)
return TRACE_ERR (gpg_error (GPG_ERR_UNSUPPORTED_PROTOCOL));
if (!name)
name = "gpgme";
if (!iversion && !strcmp (name, "gpgme"))
iversion = VERSION;
err = _gpgme_op_reset (ctx, 1);
if (err)
return err;
err = _gpgme_op_data_lookup (ctx, OPDATA_QUERY_SWDB, &hook,
sizeof (*opd), release_op_data);
opd = hook;
if (err)
return TRACE_ERR (err);
err = _gpgme_engine_op_query_swdb (ctx->engine, name, iversion,
&opd->result);
return TRACE_ERR (err);
}
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