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/*
* SPDX-License-Identifier: LGPL-2.0+
*
* This library 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 of the License, or (at your option) any later version.
*
* This library 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 library. If not, see <https://www.gnu.org/licenses/>.
*/
#include "config.h"
#include "ostree-content-writer.h"
#include "ostree-repo-private.h"
#include "ostree-autocleanups.h"
struct _OstreeContentWriter
{
GOutputStream parent_instance;
OstreeRepo *repo;
OstreeRepoBareContent output;
};
G_DEFINE_TYPE (OstreeContentWriter, ostree_content_writer, G_TYPE_OUTPUT_STREAM)
static void ostree_content_writer_finalize (GObject *object);
static gssize ostree_content_writer_write (GOutputStream *stream,
const void *buffer,
gsize count,
GCancellable *cancellable,
GError **error);
static gboolean ostree_content_writer_close (GOutputStream *stream,
GCancellable *cancellable,
GError **error);
static void
ostree_content_writer_class_init (OstreeContentWriterClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GOutputStreamClass *stream_class = G_OUTPUT_STREAM_CLASS (klass);
gobject_class->finalize = ostree_content_writer_finalize;
stream_class->write_fn = ostree_content_writer_write;
stream_class->close_fn = ostree_content_writer_close;
}
static void
ostree_content_writer_finalize (GObject *object)
{
OstreeContentWriter *stream;
stream = (OstreeContentWriter*)(object);
g_clear_object (&stream->repo);
_ostree_repo_bare_content_cleanup (&stream->output);
G_OBJECT_CLASS (ostree_content_writer_parent_class)->finalize (object);
}
static void
ostree_content_writer_init (OstreeContentWriter *self)
{
self->output.initialized = FALSE;
}
OstreeContentWriter *
_ostree_content_writer_new (OstreeRepo *repo,
const char *checksum,
guint uid,
guint gid,
guint mode,
guint64 content_len,
GVariant *xattrs,
GError **error)
{
g_autoptr(OstreeContentWriter) stream = g_object_new (OSTREE_TYPE_CONTENT_WRITER, NULL);
stream->repo = g_object_ref (repo);
if (!_ostree_repo_bare_content_open (stream->repo, checksum, content_len, uid, gid, mode, xattrs,
&stream->output, NULL, error))
return NULL;
return g_steal_pointer (&stream);
}
static gssize
ostree_content_writer_write (GOutputStream *stream,
const void *buffer,
gsize count,
GCancellable *cancellable,
GError **error)
{
OstreeContentWriter *self = (OstreeContentWriter*) stream;
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return -1;
if (!_ostree_repo_bare_content_write (self->repo, &self->output,
buffer, count, cancellable, error))
return -1;
return count;
}
static gboolean
ostree_content_writer_close (GOutputStream *stream,
GCancellable *cancellable,
GError **error)
{
/* We don't expect people to invoke close() - they need to call finish()
* to get the checksum. We'll clean up in finalize anyways if need be.
*/
return TRUE;
}
/**
* ostree_content_writer_finish:
* @self: Writer
* @cancellable: Cancellable
* @error: Error
*
* Complete the object write and return the checksum.
* Returns: (transfer full): Checksum, or %NULL on error
*/
char *
ostree_content_writer_finish (OstreeContentWriter *self,
GCancellable *cancellable,
GError **error)
{
char actual_checksum[OSTREE_SHA256_STRING_LEN+1];
if (!_ostree_repo_bare_content_commit (self->repo, &self->output, actual_checksum,
sizeof (actual_checksum), cancellable, error))
return NULL;
return g_strdup (actual_checksum);
}
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