6d0d8e7ba0
* configure.ac (NEED__FILE_OFFSET_BITS): Change to define gpgme_off_t and gpgme_ssize_t. (API__OFF_T, API__SSIZE_T): New ac_subst. * src/gpgme.h.in: Replace all ssize_t and off_t by ac_subst macros. * src/assuan-support.c, src/ath-pthread.c, src/ath.c, src/ath.h * src/data-compat.c, src/data-fd.c, src/data-mem.c, src/data-stream.c * src/data-user.c, src/data.c, src/data.h, src/engine-gpgsm.c * src/engine-uiserver.c, src/gpgme-tool.c, src/gpgme.c: Replace off_t by gpgme_off_t and sszie_t by gpgme_ssize_t. * src/ath-pthread.c, src/ath.h: Include gpgme.h. -- For a detailed description, see the gpgme.texi diff.
105 lines
2.4 KiB
C
105 lines
2.4 KiB
C
/* data-user.c - A user callback based data object.
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Copyright (C) 2002, 2004 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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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#include <errno.h>
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#include "debug.h"
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#include "data.h"
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static gpgme_ssize_t
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user_read (gpgme_data_t dh, void *buffer, size_t size)
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{
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if (!dh->data.user.cbs->read)
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{
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gpg_err_set_errno (EBADF);
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return -1;
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}
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return (*dh->data.user.cbs->read) (dh->data.user.handle, buffer, size);
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}
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static gpgme_ssize_t
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user_write (gpgme_data_t dh, const void *buffer, size_t size)
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{
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if (!dh->data.user.cbs->write)
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{
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gpg_err_set_errno (EBADF);
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return -1;
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}
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return (*dh->data.user.cbs->write) (dh->data.user.handle, buffer, size);
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}
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static gpgme_off_t
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user_seek (gpgme_data_t dh, gpgme_off_t offset, int whence)
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{
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if (!dh->data.user.cbs->seek)
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{
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gpg_err_set_errno (EBADF);
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return -1;
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}
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return (*dh->data.user.cbs->seek) (dh->data.user.handle, offset, whence);
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}
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static void
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user_release (gpgme_data_t dh)
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{
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if (dh->data.user.cbs->release)
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(*dh->data.user.cbs->release) (dh->data.user.handle);
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}
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static struct _gpgme_data_cbs user_cbs =
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{
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user_read,
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user_write,
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user_seek,
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user_release,
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NULL
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};
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gpgme_error_t
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gpgme_data_new_from_cbs (gpgme_data_t *r_dh, gpgme_data_cbs_t cbs, void *handle)
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{
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gpgme_error_t err;
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TRACE_BEG1 (DEBUG_DATA, "gpgme_data_new_from_cbs", r_dh, "handle=%p", handle);
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err = _gpgme_data_new (r_dh, &user_cbs);
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if (err)
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return TRACE_ERR (err);
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(*r_dh)->data.user.cbs = cbs;
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(*r_dh)->data.user.handle = handle;
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return TRACE_SUC1 ("dh=%p", *r_dh);
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}
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