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/*
* Copyright (C) 2011 Colin Walters <walters@verbum.org>.
*
* 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/>.
*
* Author: Colin Walters <walters@verbum.org>
*/
#pragma once
#include "libglnx.h"
G_BEGIN_DECLS
void ot_bin2hex (char *out_buf, const guint8 *inbuf, gsize len);
guchar *ot_csum_from_gchecksum (GChecksum *checksum);
struct OtChecksum
{
gboolean initialized;
guint uints[2];
gpointer data[2];
};
typedef struct OtChecksum OtChecksum;
/* Same as OSTREE_SHA256_DIGEST_LEN, but this header can't depend on that */
#define _OSTREE_SHA256_DIGEST_LEN (32)
#if defined(OSTREE_SHA256_DIGEST_LEN) && _OSTREE_SHA256_DIGEST_LEN != OSTREE_SHA256_DIGEST_LEN
#error Mismatched OSTREE_SHA256_DIGEST_LEN
#endif
/* See above */
#define _OSTREE_SHA256_STRING_LEN (64)
#if defined(OSTREE_SHA256_STRING_LEN) && _OSTREE_SHA256_STRING_LEN != OSTREE_SHA256_STRING_LEN
#error Mismatched OSTREE_SHA256_STRING_LEN
#endif
void ot_checksum_init (OtChecksum *checksum);
void ot_checksum_update (OtChecksum *checksum, const guint8 *buf, size_t len);
static inline void
ot_checksum_update_bytes (OtChecksum *checksum, GBytes *buf)
{
gsize len;
const guint8 *bufdata = g_bytes_get_data (buf, &len);
ot_checksum_update (checksum, bufdata, len);
}
void ot_checksum_get_digest (OtChecksum *checksum, guint8 *buf, size_t buflen);
void ot_checksum_get_hexdigest (OtChecksum *checksum, char *buf, size_t buflen);
void ot_checksum_clear (OtChecksum *checksum);
G_DEFINE_AUTO_CLEANUP_CLEAR_FUNC (OtChecksum, ot_checksum_clear)
gboolean ot_gio_write_update_checksum (GOutputStream *out, gconstpointer data, gsize len,
gsize *out_bytes_written, OtChecksum *checksum,
GCancellable *cancellable, GError **error);
gboolean ot_gio_splice_get_checksum (GOutputStream *out, GInputStream *in, guchar **out_csum,
GCancellable *cancellable, GError **error);
gboolean ot_gio_splice_update_checksum (GOutputStream *out, GInputStream *in, OtChecksum *checksum,
GCancellable *cancellable, GError **error);
char *ot_checksum_file_at (int dfd, const char *path, GChecksumType checksum_type,
GCancellable *cancellable, GError **error);
void ot_checksum_bytes (GBytes *data, guint8 out_digest[_OSTREE_SHA256_DIGEST_LEN]);
G_END_DECLS
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