134 lines
3.2 KiB
C
134 lines
3.2 KiB
C
/* wait-user.c
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Copyright (C) 2000 Werner Koch (dd9jn)
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Copyright (C) 2001, 2002, 2003, 2004, 2005 g10 Code GmbH
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This file is part of GPGME.
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GPGME is free software; you can redistribute it and/or modify it
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under the terms of the GNU Lesser General Public License as
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published by the Free Software Foundation; either version 2.1 of
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the License, or (at your option) any later version.
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GPGME is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#if HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <assert.h>
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#include "gpgme.h"
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#include "context.h"
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#include "priv-io.h"
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#include "wait.h"
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#include "ops.h"
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#include "debug.h"
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/* The user event loops are used for all asynchronous operations for
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which a user callback is defined. */
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/* Internal I/O Callbacks. */
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gpgme_error_t
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_gpgme_user_io_cb_handler (void *data, int fd)
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{
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gpgme_error_t err = 0;
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gpgme_error_t op_err = 0;
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struct tag *tag = (struct tag *) data;
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gpgme_ctx_t ctx;
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(void)fd;
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assert (data);
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ctx = tag->ctx;
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assert (ctx);
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LOCK (ctx->lock);
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if (ctx->canceled)
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err = gpg_error (GPG_ERR_CANCELED);
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UNLOCK (ctx->lock);
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if (! err)
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err = _gpgme_run_io_cb (&ctx->fdt.fds[tag->idx], 0, &op_err);
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if (err || op_err)
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_gpgme_cancel_with_err (ctx, err, op_err);
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else
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{
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unsigned int i;
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for (i = 0; i < ctx->fdt.size; i++)
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if (ctx->fdt.fds[i].fd != -1)
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break;
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if (i == ctx->fdt.size)
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{
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struct gpgme_io_event_done_data done_data;
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done_data.err = 0;
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done_data.op_err = 0;
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_gpgme_engine_io_event (ctx->engine, GPGME_EVENT_DONE, &done_data);
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}
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}
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return 0;
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}
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/* Register the file descriptor FD with the handler FNC (which gets
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FNC_DATA as its first argument) for the direction DIR. DATA should
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be the context for which the fd is added. R_TAG will hold the tag
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that can be used to remove the fd. */
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gpgme_error_t
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_gpgme_wait_user_add_io_cb (void *data, int fd, int dir, gpgme_io_cb_t fnc,
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void *fnc_data, void **r_tag)
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{
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gpgme_ctx_t ctx = (gpgme_ctx_t) data;
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struct tag *tag;
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gpgme_error_t err;
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assert (ctx);
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err = _gpgme_add_io_cb (data, fd, dir, fnc, fnc_data, r_tag);
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if (err)
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return err;
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tag = *r_tag;
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assert (tag);
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err = (*ctx->io_cbs.add) (ctx->io_cbs.add_priv, fd, dir,
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_gpgme_user_io_cb_handler, *r_tag,
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&tag->user_tag);
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if (err)
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_gpgme_remove_io_cb (*r_tag);
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return err;
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}
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void
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_gpgme_wait_user_remove_io_cb (void *data)
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{
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struct tag *tag = (struct tag *) data;
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gpgme_ctx_t ctx;
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assert (tag);
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ctx = tag->ctx;
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(*ctx->io_cbs.remove) (tag->user_tag);
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_gpgme_remove_io_cb (data);
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}
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void
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_gpgme_wait_user_event_cb (void *data, gpgme_event_io_t type, void *type_data)
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{
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gpgme_ctx_t ctx = data;
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if (ctx->io_cbs.event)
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(*ctx->io_cbs.event) (ctx->io_cbs.event_priv, type, type_data);
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}
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