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/* wait-user.c
Copyright (C) 2000 Werner Koch (dd9jn)
Copyright (C) 2001, 2002, 2003, 2004, 2005 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 <assert.h>
#include "gpgme.h"
#include "context.h"
#include "priv-io.h"
#include "wait.h"
#include "ops.h"
/* The user event loops are used for all asynchronous operations for
which a user callback is defined. */
/* Internal I/O Callbacks. */
gpgme_error_t
_gpgme_user_io_cb_handler (void *data, int fd)
{
gpgme_error_t err = 0;
gpgme_error_t op_err = 0;
struct tag *tag = (struct tag *) data;
gpgme_ctx_t ctx;
assert (data);
ctx = tag->ctx;
assert (ctx);
LOCK (ctx->lock);
if (ctx->canceled)
err = gpg_error (GPG_ERR_CANCELED);
UNLOCK (ctx->lock);
if (! err)
err = _gpgme_run_io_cb (&ctx->fdt.fds[tag->idx], 0, &op_err);
if (err || op_err)
_gpgme_cancel_with_err (ctx, err, op_err);
else
{
unsigned int i;
for (i = 0; i < ctx->fdt.size; i++)
if (ctx->fdt.fds[i].fd != -1)
break;
if (i == ctx->fdt.size)
{
struct gpgme_io_event_done_data done_data;
done_data.err = 0;
done_data.op_err = 0;
_gpgme_engine_io_event (ctx->engine, GPGME_EVENT_DONE, &done_data);
}
}
return 0;
}
/* Register the file descriptor FD with the handler FNC (which gets
FNC_DATA as its first argument) for the direction DIR. DATA should
be the context for which the fd is added. R_TAG will hold the tag
that can be used to remove the fd. */
gpgme_error_t
_gpgme_wait_user_add_io_cb (void *data, int fd, int dir, gpgme_io_cb_t fnc,
void *fnc_data, void **r_tag)
{
gpgme_ctx_t ctx = (gpgme_ctx_t) data;
struct tag *tag;
gpgme_error_t err;
assert (ctx);
err = _gpgme_add_io_cb (data, fd, dir, fnc, fnc_data, r_tag);
if (err)
return err;
tag = *r_tag;
assert (tag);
err = (*ctx->io_cbs.add) (ctx->io_cbs.add_priv, fd, dir,
_gpgme_user_io_cb_handler, *r_tag,
&tag->user_tag);
if (err)
_gpgme_remove_io_cb (*r_tag);
return err;
}
void
_gpgme_wait_user_remove_io_cb (void *data)
{
struct tag *tag = (struct tag *) data;
gpgme_ctx_t ctx;
assert (tag);
ctx = tag->ctx;
(*ctx->io_cbs.remove) (tag->user_tag);
_gpgme_remove_io_cb (data);
}
void
_gpgme_wait_user_event_cb (void *data, gpgme_event_io_t type, void *type_data)
{
gpgme_ctx_t ctx = data;
if (ctx->io_cbs.event)
(*ctx->io_cbs.event) (ctx->io_cbs.event_priv, type, type_data);
}
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