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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
/* Suppress warning for accessing deprecated member "err". */
#define _GPGME_IN_GPGME 1
#include "gpgme.h"
#include "context.h"
#include "ops.h"
#include "util.h"
#include "debug.h"
/* LEGACY: Remove this when removing the deprecated result
structure. */
typedef struct
{
struct _gpgme_op_assuan_result result;
} *op_data_t;
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;
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;
{
/* LEGACY: Remove this when removing the deprecated result
structure. */
void *hook;
op_data_t opd;
err = _gpgme_op_data_lookup (ctx, OPDATA_ASSUAN, &hook,
sizeof (*opd), NULL);
if (err)
return err;
}
return _gpgme_engine_op_assuan_transact (ctx->engine, command,
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)
{
gpg_error_t err;
TRACE_BEG7 (DEBUG_CTX, "gpgme_op_assuan_transact_start", ctx,
"command=%s, data_cb=%p/%p, inq_cb=%p/%p, status_cb=%p/%p",
command, data_cb, data_cb_value, inq_cb, inq_cb_value,
status_cb, status_cb_value);
if (!ctx)
return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
err = opassuan_start (ctx, 0, command, data_cb, data_cb_value,
inq_cb, inq_cb_value, status_cb, status_cb_value);
return TRACE_ERR (err);
}
/* XXXX. This is the synchronous variant. */
gpgme_error_t
gpgme_op_assuan_transact_ext (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 *op_err_p)
{
gpgme_error_t err;
gpgme_error_t op_err;
TRACE_BEG8 (DEBUG_CTX, "gpgme_op_assuan_transact", ctx,
"command=%s, data_cb=%p/%p, inq_cb=%p/%p, status_cb=%p/%p, "
"op_err=%p",
command, data_cb, data_cb_value, inq_cb, inq_cb_value,
status_cb, status_cb_value, op_err_p);
if (!ctx)
return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
err = opassuan_start (ctx, 1, command,
data_cb, data_cb_value,
inq_cb, inq_cb_value,
status_cb, status_cb_value);
if (err)
goto out;
err = _gpgme_wait_one_ext (ctx, &op_err);
if (op_err)
{
TRACE_LOG2 ("op_err = %s <%s>", gpgme_strerror (op_err),
gpgme_strsource (op_err));
if (! op_err_p)
{
TRACE_LOG ("warning: operational error ignored by user");
}
}
if (op_err_p)
*op_err_p = op_err;
out:
return TRACE_ERR (err);
}
/* Compatibility code for old interface. */
/* Evil hack breaking abstractions for the purpose of localizing our
other hack. This is copied from engine.c. */
struct engine
{
struct engine_ops *ops;
void *engine;
};
gpg_error_t _gpgme_engine_assuan_last_op_err (void *engine);
gpgme_assuan_result_t
gpgme_op_assuan_result (gpgme_ctx_t ctx)
{
gpgme_error_t err;
void *hook;
op_data_t opd;
TRACE_BEG (DEBUG_CTX, "gpgme_op_assuan_result", ctx);
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)
{
TRACE_SUC0 ("result=(null)");
return NULL;
}
/* All of this is a hack for the old style interface. The new style
interface returns op errors directly. */
opd->result.err = _gpgme_engine_assuan_last_op_err (ctx->engine->engine);
if (opd->result.err)
{
TRACE_LOG1 ("err = %s", gpg_strerror (0));
}
else
{
TRACE_LOG2 ("err = %s <%s>", gpg_strerror (opd->result.err),
gpg_strsource (opd->result.err));
}
TRACE_SUC1 ("result=%p", &opd->result);
return &opd->result;
}
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;
TRACE (DEBUG_CTX, "gpgme_op_assuan_transact", ctx);
if (!ctx)
return gpg_error (GPG_ERR_INV_VALUE);
/* Users of the old-style session based interfaces need to look at
the result structure. */
err = gpgme_op_assuan_transact_ext (ctx, command, data_cb, data_cb_value,
inq_cb, inq_cb_value,
status_cb, status_cb_value, NULL);
return err;
}
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