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/*
* Copyright (C) 2011 Colin Walters <walters@verbum.org>
* Copyright (C) 2022 Igalia S.L.
*
* 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-checksum-input-stream.h"
enum
{
PROP_0,
PROP_CHECKSUM
};
struct _OstreeChecksumInputStreamPrivate
{
GChecksum *checksum;
};
G_DEFINE_TYPE_WITH_PRIVATE (OstreeChecksumInputStream, ostree_checksum_input_stream,
G_TYPE_FILTER_INPUT_STREAM)
static void ostree_checksum_input_stream_set_property (GObject *object, guint prop_id,
const GValue *value, GParamSpec *pspec);
static void ostree_checksum_input_stream_get_property (GObject *object, guint prop_id,
GValue *value, GParamSpec *pspec);
static gssize ostree_checksum_input_stream_read (GInputStream *stream, void *buffer, gsize count,
GCancellable *cancellable, GError **error);
static void
ostree_checksum_input_stream_class_init (OstreeChecksumInputStreamClass *klass)
{
GObjectClass *gobject_class = G_OBJECT_CLASS (klass);
GInputStreamClass *stream_class = G_INPUT_STREAM_CLASS (klass);
gobject_class->get_property = ostree_checksum_input_stream_get_property;
gobject_class->set_property = ostree_checksum_input_stream_set_property;
stream_class->read_fn = ostree_checksum_input_stream_read;
/*
* OstreeChecksumInputStream:checksum:
*
* The checksum that the stream updates.
*/
g_object_class_install_property (
gobject_class, PROP_CHECKSUM,
g_param_spec_pointer ("checksum", "", "",
G_PARAM_READWRITE | G_PARAM_CONSTRUCT_ONLY | G_PARAM_STATIC_STRINGS));
}
static void
ostree_checksum_input_stream_set_property (GObject *object, guint prop_id, const GValue *value,
GParamSpec *pspec)
{
OstreeChecksumInputStream *self;
self = OSTREE_CHECKSUM_INPUT_STREAM (object);
switch (prop_id)
{
case PROP_CHECKSUM:
self->priv->checksum = g_value_get_pointer (value);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
break;
}
}
static void
ostree_checksum_input_stream_get_property (GObject *object, guint prop_id, GValue *value,
GParamSpec *pspec)
{
OstreeChecksumInputStream *self;
self = OSTREE_CHECKSUM_INPUT_STREAM (object);
switch (prop_id)
{
case PROP_CHECKSUM:
g_value_set_pointer (value, self->priv->checksum);
break;
default:
G_OBJECT_WARN_INVALID_PROPERTY_ID (object, prop_id, pspec);
}
}
static void
ostree_checksum_input_stream_init (OstreeChecksumInputStream *self)
{
self->priv = ostree_checksum_input_stream_get_instance_private (self);
}
OstreeChecksumInputStream *
ostree_checksum_input_stream_new (GInputStream *base, GChecksum *checksum)
{
g_assert (G_IS_INPUT_STREAM (base));
OstreeChecksumInputStream *stream = g_object_new (
OSTREE_TYPE_CHECKSUM_INPUT_STREAM, "base-stream", base, "checksum", checksum, NULL);
return stream;
}
static gssize
ostree_checksum_input_stream_read (GInputStream *stream, void *buffer, gsize count,
GCancellable *cancellable, GError **error)
{
OstreeChecksumInputStream *self = (OstreeChecksumInputStream *)stream;
GFilterInputStream *fself = (GFilterInputStream *)self;
gssize res = -1;
if (g_cancellable_set_error_if_cancelled (cancellable, error))
return -1;
res = g_input_stream_read (fself->base_stream, buffer, count, cancellable, error);
if (res > 0)
g_checksum_update (self->priv->checksum, buffer, res);
return res;
}
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