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/* vfs-create.c - vfs create support in GPGME
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, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdlib.h>
#include <string.h>
#include "gpgme.h"
#include "debug.h"
#include "context.h"
#include "ops.h"
#include "util.h"
static gpgme_error_t
vfs_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;
return _gpgme_engine_op_assuan_transact (ctx->engine, command,
data_cb, data_cb_value,
inq_cb, inq_cb_value,
status_cb, status_cb_value);
}
#if 0
/* XXXX. This is the asynchronous variant. */
static gpgme_error_t
gpgme_op_vfs_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 vfs_start (ctx, 0, command, data_cb, data_cb_value,
inq_cb, inq_cb_value, status_cb, status_cb_value);
}
#endif
/* XXXX. This is the synchronous variant. */
static gpgme_error_t
gpgme_op_vfs_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 *op_err)
{
gpgme_error_t err;
if (!ctx)
return gpg_error (GPG_ERR_INV_VALUE);
err = vfs_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_ext (ctx, op_err);
return err;
}
/* The actual exported interface follows. */
/* The container is automatically uncreateed when the context is reset
or destroyed. This is a synchronous convenience interface, which
automatically returns an operation error if there is no
transmission error. */
static gpgme_error_t
_gpgme_op_vfs_create (gpgme_ctx_t ctx, gpgme_key_t recp[],
const char *container_file, unsigned int flags,
gpgme_error_t *op_err)
{
gpg_error_t err;
char *cmd;
char *container_file_esc = NULL;
int i;
/* We want to encourage people to check error values, so not getting
them is discouraged here. Also makes our code easier. */
if (! op_err)
return gpg_error (GPG_ERR_INV_VALUE);
err = _gpgme_encode_percent_string (container_file, &container_file_esc, 0);
if (err)
return err;
i = 0;
while (!err && recp[i])
{
if (!recp[i]->subkeys || !recp[i]->subkeys->fpr)
{
free (container_file_esc);
return gpg_error (GPG_ERR_UNUSABLE_PUBKEY);
}
if (asprintf (&cmd, "RECIPIENT %s", recp[i]->subkeys->fpr) < 0)
{
err = gpg_error_from_syserror ();
free (container_file_esc);
return err;
}
err = gpgme_op_vfs_transact (ctx, cmd, NULL, NULL, NULL, NULL,
NULL, NULL, op_err);
free (cmd);
if (err || *op_err)
{
free (container_file_esc);
return err;
}
recp++;
}
if (asprintf (&cmd, "CREATE -- %s", container_file_esc) < 0)
{
err = gpg_error_from_syserror ();
free (container_file_esc);
return err;
}
free (container_file_esc);
err = gpgme_op_vfs_transact (ctx, cmd, NULL, NULL, NULL, NULL,
NULL, NULL, op_err);
free (cmd);
return err;
}
gpgme_error_t
gpgme_op_vfs_create (gpgme_ctx_t ctx, gpgme_key_t recp[],
const char *container_file, unsigned int flags,
gpgme_error_t *op_err)
{
gpg_error_t err;
TRACE_BEG3 (DEBUG_CTX, "gpgme_op_vfs_create", ctx,
"container_file=%s, flags=0x%x, op_err=%p",
container_file, flags, op_err);
if (!ctx)
return TRACE_ERR (gpg_error (GPG_ERR_INV_VALUE));
if (_gpgme_debug_trace () && recp)
{
int i = 0;
while (recp[i])
{
TRACE_LOG3 ("recipient[%i] = %p (%s)", i, recp[i],
(recp[i]->subkeys && recp[i]->subkeys->fpr) ?
recp[i]->subkeys->fpr : "invalid");
i++;
}
}
err = _gpgme_op_vfs_create (ctx, recp, container_file, flags, op_err);
return TRACE_ERR (err);
}
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