--- libaitsync/src/patch.c	2010/03/24 16:00:15	1.1
+++ libaitsync/src/patch.c	2014/02/04 16:39:00	1.4.6.1
@@ -1,8 +1,62 @@
+/*************************************************************************
+* (C) 2010 AITNET ltd - Sofia/Bulgaria - <misho@aitbg.com>
+*  by Michael Pounov <misho@openbsd-bg.org>
+*
+* $Author: misho $
+* $Id: patch.c,v 1.4.6.1 2014/02/04 16:39:00 misho Exp $
+*
+**************************************************************************
+The ELWIX and AITNET software is distributed under the following
+terms:
+
+All of the documentation and software included in the ELWIX and AITNET
+Releases is copyrighted by ELWIX - Sofia/Bulgaria <info@elwix.org>
+
+Copyright 2004 - 2014
+	by Michael Pounov <misho@elwix.org>.  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.
+3. All advertising materials mentioning features or use of this software
+   must display the following acknowledgement:
+This product includes software developed by Michael Pounov <misho@elwix.org>
+ELWIX - Embedded LightWeight unIX and its contributors.
+4. Neither the name of AITNET nor the names of its contributors
+   may be used to endorse or promote products derived from this software
+   without specific prior written permission.
+
+THIS SOFTWARE IS PROVIDED BY AITNET 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 REGENTS 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 "global.h"
 #include "patch.h"
 
 
-int sync_buildPatch(void * __restrict buf, u_int buflen, struct tagPiece ** __restrict arr)
+/*
+ * sync_buildPatch() - Build patch from buffer to pieces array
+ *
+ * @buf = Input buffer
+ * @buflen = Buffer length
+ * @arr = Array from pieces
+ * return: -1 error, != -1 num pieces
+*/
+int
+sync_buildPatch(void * __restrict buf, u_int buflen, struct tagPiece ** __restrict arr)
 {
 	void *pos;
 	sync_chunk_t *prefix, *suffix;
@@ -15,7 +69,7 @@ int sync_buildPatch(void * __restrict buf, u_int bufle
 
 	a = malloc(sizeof(struct tagPiece));
 	if (!a) {
-		SETERR;
+		LOGERR;
 		return -1;
 	} else
 		memset(a, 0, sizeof(struct tagPiece));
@@ -23,13 +77,15 @@ int sync_buildPatch(void * __restrict buf, u_int bufle
 	for (pos = buf, i = 0; len && pos < buf + buflen; i++) {
 		a = realloc(a, sizeof(struct tagPiece) * (i + 2));
 		if (!a) {
-			SETERR;
+			LOGERR;
 			return -1;
 		} else {
 			memset(&a[i + 1], 0, sizeof(struct tagPiece));
-			// printf("%d.prefix_pos=%p len=%d\n", i, pos, len);
+#if 0
+			printf("start: %d.prefix_pos=%p len=%d\n", i, pos, len);
+#endif
 
-			// prefix chunk
+			/* prefix chunk */
 			prefix = pos;
 			if (prefix->sc_magic != DLTSYNC_MAGIC) {
 				if (a) {
@@ -42,9 +98,11 @@ int sync_buildPatch(void * __restrict buf, u_int bufle
 				pos += sizeof(sync_chunk_t);
 				len -= sizeof(sync_chunk_t);
 			}
-			// printf("%d.prefix=%p pos=%p len=%d\n", i, a[i].pfx, pos, len);
+#if 0
+			printf("prefix: %d.prefix=%p pos=%p len=%d\n", i, a[i].pfx, pos, len);
+#endif
 
-			// data
+			/* data */
 			if (!len) {
 				if (a) {
 					free(a);
@@ -56,9 +114,11 @@ int sync_buildPatch(void * __restrict buf, u_int bufle
 				pos += prefix->sc_len;
 				len -= prefix->sc_len;
 			}
-			// printf("%d.data=%p pos=%p len=%d\n", i, a[i].buf, pos, len);
+#if 0
+			printf("data: %d.data=%p pos=%p len=%d\n", i, a[i].buf, pos, len);
+#endif
 
-			// if find sync chunk
+			/* if find sync chunk */
 			if (len) {
 				suffix = pos;
 				if (SIGSYNC_MAGIC == suffix->sc_magic) {
@@ -66,7 +126,9 @@ int sync_buildPatch(void * __restrict buf, u_int bufle
 					pos += sizeof(sync_chunk_t);
 					len -= sizeof(sync_chunk_t);
 				}
-				// printf("%d.data=%p pos=%p len=%d\n", i, a[i].sfx, pos, len);
+#if 0
+				printf("suffix: %d.data=%p pos=%p len=%d\n", i, a[i].sfx, pos, len);
+#endif
 			}
 		}
 	}