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📄 Makefile(775 B)
📄 Makefile.depend(398 B)
📄 activemap.c(17.58 KB)
📄 activemap.h(2.86 KB)
📄 control.c(14.08 KB)
📄 control.h(1.86 KB)
📄 crc32.c(5.58 KB)
📄 crc32.h(532 B)
📄 ebuf.c(5.95 KB)
📄 ebuf.h(2 KB)
📄 event.c(4.18 KB)
📄 event.h(1.83 KB)
📄 hast.conf.5(11.13 KB)
📄 hast.h(7.98 KB)
📄 hast_checksum.c(4.13 KB)
📄 hast_checksum.h(1.83 KB)
📄 hast_compression.c(6.69 KB)
📄 hast_compression.h(1.85 KB)
📄 hast_proto.c(5.15 KB)
📄 hast_proto.h(1.98 KB)
📄 hastd.8(6.57 KB)
📄 hastd.c(36.46 KB)
📄 hastd.h(2.04 KB)
📄 hooks.c(9.37 KB)
📄 hooks.h(1.88 KB)
📄 lzf.c(11.03 KB)
📄 lzf.h(7.31 KB)
📄 metadata.c(6.43 KB)
📄 metadata.h(1.83 KB)
📄 nv.c(21.83 KB)
📄 nv.h(5.84 KB)
📄 parse.y(22.02 KB)
📄 pjdlog.c(12.97 KB)
📄 pjdlog.h(4.71 KB)
📄 primary.c(67.26 KB)
📄 proto.c(10.66 KB)
📄 proto.h(2.73 KB)
📄 proto_common.c(5.81 KB)
📄 proto_impl.h(3.08 KB)
📄 proto_socketpair.c(5.75 KB)
📄 proto_tcp.c(14.76 KB)
📄 proto_uds.c(8.32 KB)
📄 rangelock.c(3.49 KB)
📄 rangelock.h(1.94 KB)
📄 refcnt.h(1.91 KB)
📄 secondary.c(26.69 KB)
📄 subr.c(7.83 KB)
📄 subr.h(2.09 KB)
📄 synch.h(4.77 KB)
📄 token.l(2.84 KB)

Editing: hast_checksum.c

/*-
 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD
 *
 * Copyright (c) 2011 Pawel Jakub Dawidek <pawel@dawidek.net>
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE AUTHORS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHORS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#include <errno.h>
#include <string.h>
#include <strings.h>

#include <crc32.h>
#include <hast.h>
#include <nv.h>
#include <sha256.h>
#include <pjdlog.h>

#include "hast_checksum.h"

#define	MAX_HASH_SIZE	SHA256_DIGEST_LENGTH

static void
hast_crc32_checksum(const unsigned char *data, size_t size,
    unsigned char *hash, size_t *hsizep)
{
	uint32_t crc;

crc = crc32(data, size);
	/* XXXPJD: Do we have to use htole32() on crc first? */
	bcopy(&crc, hash, sizeof(crc));
	*hsizep = sizeof(crc);
}

static void
hast_sha256_checksum(const unsigned char *data, size_t size,
    unsigned char *hash, size_t *hsizep)
{
	SHA256_CTX ctx;

SHA256_Init(&ctx);
	SHA256_Update(&ctx, data, size);
	SHA256_Final(hash, &ctx);
	*hsizep = SHA256_DIGEST_LENGTH;
}

const char *
checksum_name(int num)
{

switch (num) {
	case HAST_CHECKSUM_NONE:
		return ("none");
	case HAST_CHECKSUM_CRC32:
		return ("crc32");
	case HAST_CHECKSUM_SHA256:
		return ("sha256");
	}
	return ("unknown");
}

int
checksum_send(const struct hast_resource *res, struct nv *nv, void **datap,
    size_t *sizep, bool *freedatap __unused)
{
	unsigned char hash[MAX_HASH_SIZE];
	size_t hsize;

switch (res->hr_checksum) {
	case HAST_CHECKSUM_NONE:
		return (0);
	case HAST_CHECKSUM_CRC32:
		hast_crc32_checksum(*datap, *sizep, hash, &hsize);
		break;
	case HAST_CHECKSUM_SHA256:
		hast_sha256_checksum(*datap, *sizep, hash, &hsize);
		break;
	default:
		PJDLOG_ABORT("Invalid checksum: %d.", res->hr_checksum);
	}
	nv_add_string(nv, checksum_name(res->hr_checksum), "checksum");
	nv_add_uint8_array(nv, hash, hsize, "hash");
	if (nv_error(nv) != 0) {
		errno = nv_error(nv);
		return (-1);
	}
	return (0);
}

int
checksum_recv(const struct hast_resource *res __unused, struct nv *nv,
    void **datap, size_t *sizep, bool *freedatap __unused)
{
	unsigned char chash[MAX_HASH_SIZE];
	const unsigned char *rhash;
	size_t chsize, rhsize;
	const char *algo;

algo = nv_get_string(nv, "checksum");
	if (algo == NULL)
		return (0);	/* No checksum. */
	rhash = nv_get_uint8_array(nv, &rhsize, "hash");
	if (rhash == NULL) {
		pjdlog_error("Hash is missing.");
		return (-1);	/* Hash not found. */
	}
	if (strcmp(algo, "crc32") == 0)
		hast_crc32_checksum(*datap, *sizep, chash, &chsize);
	else if (strcmp(algo, "sha256") == 0)
		hast_sha256_checksum(*datap, *sizep, chash, &chsize);
	else {
		pjdlog_error("Unknown checksum algorithm '%s'.", algo);
		return (-1);	/* Unknown checksum algorithm. */
	}
	if (rhsize != chsize) {
		pjdlog_error("Invalid hash size (%zu) for %s, should be %zu.",
		    rhsize, algo, chsize);
		return (-1);	/* Different hash size. */
	}
	if (bcmp(rhash, chash, chsize) != 0) {
		pjdlog_error("Hash mismatch.");
		return (-1);	/* Hash mismatch. */
	}

return (0);
}

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Editing: hast_checksum.c

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