You can not select more than 25 topics Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
tdepim/libkdenetwork/libgpgme-copy/gpgme/wait-private.c

148 lines
3.7 KiB

This file contains invisible Unicode characters!

This file contains invisible Unicode characters that may be processed differently from what appears below. If your use case is intentional and legitimate, you can safely ignore this warning. Use the Escape button to reveal hidden characters.

/* wait-private.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., 51 Franklin Street, Fifth Floor, Boston, MA
02110-1301, USA. */
#if HAVE_CONFIG_H
#include <config.h>
#endif
#include <assert.h>
#include <errno.h>
#include "gpgme.h"
#include "context.h"
#include "wait.h"
#include "ops.h"
#include "priv-io.h"
#include "util.h"
/* The private event loops are used for all blocking operations, and
for the key and trust item listing operations. They are completely
separated from each other. */
/* Internal I/O callback functions. */
/* The add_io_cb and remove_io_cb handlers are shared with the global
event loops. */
void
_gpgme_wait_private_event_cb (void *data, gpgme_event_io_t type,
void *type_data)
{
switch (type)
{
case GPGME_EVENT_START:
/* Nothing to do here, as the wait routine is called after the
initialization is finished. */
break;
case GPGME_EVENT_DONE:
break;
case GPGME_EVENT_NEXT_KEY:
_gpgme_op_keylist_event_cb (data, type, type_data);
break;
case GPGME_EVENT_NEXT_TRUSTITEM:
_gpgme_op_trustlist_event_cb (data, type, type_data);
break;
}
}
/* If COND is a null pointer, wait until the blocking operation in CTX
finished and return its error value. Otherwise, wait until COND is
satisfied or the operation finished. */
gpgme_error_t
_gpgme_wait_on_condition (gpgme_ctx_t ctx, volatile int *cond)
{
gpgme_error_t err = 0;
int hang = 1;
do
{
int nr = _gpgme_io_select (ctx->fdt.fds, ctx->fdt.size, 0);
unsigned int i;
if (nr < 0)
{
/* An error occured. Close all fds in this context, and
signal it. */
unsigned int idx;
err = gpg_error_from_errno (errno);
for (idx = 0; idx < ctx->fdt.size; idx++)
if (ctx->fdt.fds[idx].fd != -1)
_gpgme_io_close (ctx->fdt.fds[idx].fd);
_gpgme_engine_io_event (ctx->engine, GPGME_EVENT_DONE, &err);
return err;
}
for (i = 0; i < ctx->fdt.size && nr; i++)
{
if (ctx->fdt.fds[i].fd != -1 && ctx->fdt.fds[i].signaled)
{
ctx->fdt.fds[i].signaled = 0;
assert (nr);
nr--;
err = _gpgme_run_io_cb (&ctx->fdt.fds[i], 0);
if (err)
{
/* An error occured. Close all fds in this context,
and signal it. */
unsigned int idx;
for (idx = 0; idx < ctx->fdt.size; idx++)
if (ctx->fdt.fds[idx].fd != -1)
_gpgme_io_close (ctx->fdt.fds[idx].fd);
_gpgme_engine_io_event (ctx->engine, GPGME_EVENT_DONE, &err);
return err;
}
}
}
for (i = 0; i < ctx->fdt.size; i++)
if (ctx->fdt.fds[i].fd != -1)
break;
if (i == ctx->fdt.size)
{
_gpgme_engine_io_event (ctx->engine, GPGME_EVENT_DONE, &err);
hang = 0;
}
if (cond && *cond)
hang = 0;
}
while (hang);
return 0;
}
/* Wait until the blocking operation in context CTX has finished and
return the error value. */
gpgme_error_t
_gpgme_wait_one (gpgme_ctx_t ctx)
{
return _gpgme_wait_on_condition (ctx, NULL);
}