749325d6c1
* configure.ac: Require libgpg-error 1.8. src/ 2010-05-06 Marcus Brinkmann <marcus@g10code.de> * sign.c, data-user.c, conversion.c, debug.c, verify.c, data.c, decrypt.c, delete.c, assuan-support.c, import.c, engine-gpgsm.c, data-mem.c, op-support.c, w32-io.c, w32-util.c, data-compat.c: Use gpg_error_from_syserror instead gpg_error_from_errno, and use gpg_err_set_errno to set error number. * setenv.c: Include <gpg-error.h> and define __set_errno to use gpg_err_set_errno. * gpgme-tool.c (ARGP_ERR_UNKNOWN): Define to EDEADLOCK (which is mapped in Windows CE) instead of E2BIG (which is not). (gt_import_keys): Initialize err.
103 lines
2.3 KiB
C
103 lines
2.3 KiB
C
/* data-user.c - A user callback based data object.
|
||
Copyright (C) 2002, 2004 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 <sys/types.h>
|
||
#include <errno.h>
|
||
|
||
#include "debug.h"
|
||
#include "data.h"
|
||
|
||
|
||
static ssize_t
|
||
user_read (gpgme_data_t dh, void *buffer, size_t size)
|
||
{
|
||
if (!dh->data.user.cbs->read)
|
||
{
|
||
gpg_err_set_errno (EBADF);
|
||
return -1;
|
||
}
|
||
|
||
return (*dh->data.user.cbs->read) (dh->data.user.handle, buffer, size);
|
||
}
|
||
|
||
|
||
static ssize_t
|
||
user_write (gpgme_data_t dh, const void *buffer, size_t size)
|
||
{
|
||
if (!dh->data.user.cbs->write)
|
||
{
|
||
gpg_err_set_errno (EBADF);
|
||
return -1;
|
||
}
|
||
|
||
return (*dh->data.user.cbs->write) (dh->data.user.handle, buffer, size);
|
||
}
|
||
|
||
|
||
static off_t
|
||
user_seek (gpgme_data_t dh, off_t offset, int whence)
|
||
{
|
||
if (!dh->data.user.cbs->seek)
|
||
{
|
||
gpg_err_set_errno (EBADF);
|
||
return -1;
|
||
}
|
||
|
||
return (*dh->data.user.cbs->seek) (dh->data.user.handle, offset, whence);
|
||
}
|
||
|
||
|
||
static void
|
||
user_release (gpgme_data_t dh)
|
||
{
|
||
if (dh->data.user.cbs->release)
|
||
(*dh->data.user.cbs->release) (dh->data.user.handle);
|
||
}
|
||
|
||
|
||
static struct _gpgme_data_cbs user_cbs =
|
||
{
|
||
user_read,
|
||
user_write,
|
||
user_seek,
|
||
user_release,
|
||
NULL
|
||
};
|
||
|
||
|
||
gpgme_error_t
|
||
gpgme_data_new_from_cbs (gpgme_data_t *r_dh, gpgme_data_cbs_t cbs, void *handle)
|
||
{
|
||
gpgme_error_t err;
|
||
TRACE_BEG1 (DEBUG_DATA, "gpgme_data_new_from_cbs", r_dh, "handle=%p", handle);
|
||
|
||
err = _gpgme_data_new (r_dh, &user_cbs);
|
||
if (err)
|
||
return TRACE_ERR (err);
|
||
|
||
(*r_dh)->data.user.cbs = cbs;
|
||
(*r_dh)->data.user.handle = handle;
|
||
return TRACE_SUC1 ("dh=%p", *r_dh);
|
||
}
|