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/* opassuan.c - Low-level Assuan operations.
Copyright (C) 2009 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 <http://www.gnu.org/licenses/>.
*/
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include "gpgme.h"
#include "context.h"
#include "ops.h"
#include "util.h"
typedef struct
{
struct _gpgme_op_assuan_result result;
} *op_data_t;
/* This callback is used to return the status of the assuan command
back. Note that this is different from the error code returned
from gpgme_op_assuan_transact because the later only reflects error
with the connection. */
static gpgme_error_t
result_cb (void *priv, gpgme_error_t result)
{
gpgme_ctx_t ctx = (gpgme_ctx_t)priv;
gpgme_error_t err;
void *hook;
op_data_t opd;
err = _gpgme_op_data_lookup (ctx, OPDATA_ASSUAN, &hook, -1, NULL);
opd = hook;
if (err)
return err;
if (!opd)
return gpg_error (GPG_ERR_INTERNAL);
opd->result.err = result;
return 0;
}
gpgme_assuan_result_t
gpgme_op_assuan_result (gpgme_ctx_t ctx)
{
gpgme_error_t err;
void *hook;
op_data_t opd;
err = _gpgme_op_data_lookup (ctx, OPDATA_ASSUAN, &hook, -1, NULL);
opd = hook;
/* Check in case this function is used without having run a command
before. */
if (err || !opd)
return NULL;
return &opd->result;
}
static gpgme_error_t
opassuan_start (gpgme_ctx_t ctx, int synchronous,
const char *command,
gpgme_assuan_data_cb_t data_cb,
void *data_cb_value,
gpgme_assuan_inquire_cb_t inq_cb,
void *inq_cb_value,
gpgme_assuan_status_cb_t status_cb,
void *status_cb_value)
{
gpgme_error_t err;
void *hook;
op_data_t opd;
if (!command || !*command)
return gpg_error (GPG_ERR_INV_VALUE);
/* The flag value 256 is used to suppress an engine reset. This is
required to keep the connection running. */
err = _gpgme_op_reset (ctx, ((synchronous&255) | 256));
if (err)
return err;
err = _gpgme_op_data_lookup (ctx, OPDATA_ASSUAN, &hook, sizeof (*opd), NULL);
opd = hook;
if (err)
return err;
opd->result.err = gpg_error (GPG_ERR_UNFINISHED);
return _gpgme_engine_op_assuan_transact (ctx->engine, command,
result_cb, ctx,
data_cb, data_cb_value,
inq_cb, inq_cb_value,
status_cb, status_cb_value);
}
/* XXXX. This is the asynchronous variant. */
gpgme_error_t
gpgme_op_assuan_transact_start (gpgme_ctx_t ctx,
const char *command,
gpgme_assuan_data_cb_t data_cb,
void *data_cb_value,
gpgme_assuan_inquire_cb_t inq_cb,
void *inq_cb_value,
gpgme_assuan_status_cb_t status_cb,
void *status_cb_value)
{
return opassuan_start (ctx, 0, command,
data_cb, data_cb_value,
inq_cb, inq_cb_value,
status_cb, status_cb_value);
}
/* XXXX. This is the synchronous variant. */
gpgme_error_t
gpgme_op_assuan_transact (gpgme_ctx_t ctx,
const char *command,
gpgme_assuan_data_cb_t data_cb,
void *data_cb_value,
gpgme_assuan_inquire_cb_t inq_cb,
void *inq_cb_value,
gpgme_assuan_status_cb_t status_cb,
void *status_cb_value)
{
gpgme_error_t err;
err = opassuan_start (ctx, 1, command,
data_cb, data_cb_value,
inq_cb, inq_cb_value,
status_cb, status_cb_value);
if (!err)
err = _gpgme_wait_one (ctx);
return err;
}
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