Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

===================================================================
RCS file: /ftp/cvs/cvsroot/src/lib/libc/nameser/ns_parse.c,v
retrieving revision 1.6
retrieving revision 1.6.14.1
diff -u -p -r1.6 -r1.6.14.1
--- src/lib/libc/nameser/ns_parse.c	2008/06/21 20:41:48	1.6
+++ src/lib/libc/nameser/ns_parse.c	2011/01/09 20:43:28	1.6.14.1
@@ -1,4 +1,4 @@
-/*	$NetBSD: ns_parse.c,v 1.6 2008/06/21 20:41:48 christos Exp $	*/
+/*	$NetBSD: ns_parse.c,v 1.6.14.1 2011/01/09 20:43:28 riz Exp $	*/
 
 /*
  * Copyright (c) 2004 by Internet Systems Consortium, Inc. ("ISC")
@@ -20,9 +20,9 @@
 #include <sys/cdefs.h>
 #ifndef lint
 #ifdef notdef
-static const char rcsid[] = "Id: ns_parse.c,v 1.9 2007/08/27 03:32:26 marka Exp";
+static const char rcsid[] = "Id: ns_parse.c,v 1.10 2009/01/23 19:59:16 each Exp";
 #else
-__RCSID("$NetBSD: ns_parse.c,v 1.6 2008/06/21 20:41:48 christos Exp $");
+__RCSID("$NetBSD: ns_parse.c,v 1.6.14.1 2011/01/09 20:43:28 riz Exp $");
 #endif
 #endif
 
@@ -54,6 +54,9 @@ static void	setsection(ns_msg *msg, ns_s
 	do { errno = (err); if (errno == errno) return (-1); } while (0)
 #endif
 
+#define PARSE_FMT_PRESO 0	/* Parse using presentation-format names */
+#define PARSE_FMT_WIRE 1	/* Parse using network-format names */
+
 /* Public. */
 
 /* These need to be in the same order as the nres.h:ns_flag enum. */
@@ -109,7 +112,6 @@ ns_initparse(const u_char *msg, int msgl
 	const u_char *eom = msg + msglen;
 	int i;
 
-	memset(handle, 0x5e, sizeof *handle);
 	handle->_msg = msg;
 	handle->_eom = eom;
 	if (msg + NS_INT16SZ > eom)
@@ -201,6 +203,69 @@ ns_parserr(ns_msg *handle, ns_sect secti
 	return (0);
 }
 
+/*
+ * This is identical to the above but uses network-format (uncompressed) names.
+ */
+int
+ns_parserr2(ns_msg *handle, ns_sect section, int rrnum, ns_rr2 *rr) {
+	int b;
+	int tmp;
+
+	/* Make section right. */
+	tmp = section;
+	if (tmp < 0 || section >= ns_s_max)
+		RETERR(ENODEV);
+	if (section != handle->_sect)
+		setsection(handle, section);
+
+	/* Make rrnum right. */
+	if (rrnum == -1)
+		rrnum = handle->_rrnum;
+	if (rrnum < 0 || rrnum >= handle->_counts[(int)section])
+		RETERR(ENODEV);
+	if (rrnum < handle->_rrnum)
+		setsection(handle, section);
+	if (rrnum > handle->_rrnum) {
+		b = ns_skiprr(handle->_msg_ptr, handle->_eom, section,
+			      rrnum - handle->_rrnum);
+
+		if (b < 0)
+			return (-1);
+		handle->_msg_ptr += b;
+		handle->_rrnum = rrnum;
+	}
+
+	/* Do the parse. */
+	b = ns_name_unpack2(handle->_msg, handle->_eom, handle->_msg_ptr,
+			    rr->nname, NS_MAXNNAME, &rr->nnamel);
+	if (b < 0)
+		return (-1);
+	handle->_msg_ptr += b;
+	if (handle->_msg_ptr + NS_INT16SZ + NS_INT16SZ > handle->_eom)
+		RETERR(EMSGSIZE);
+	NS_GET16(rr->type, handle->_msg_ptr);
+	NS_GET16(rr->rr_class, handle->_msg_ptr);
+	if (section == ns_s_qd) {
+		rr->ttl = 0;
+		rr->rdlength = 0;
+		rr->rdata = NULL;
+	} else {
+		if (handle->_msg_ptr + NS_INT32SZ + NS_INT16SZ > handle->_eom)
+			RETERR(EMSGSIZE);
+		NS_GET32(rr->ttl, handle->_msg_ptr);
+		NS_GET16(rr->rdlength, handle->_msg_ptr);
+		if (handle->_msg_ptr + rr->rdlength > handle->_eom)
+			RETERR(EMSGSIZE);
+		rr->rdata = handle->_msg_ptr;
+		handle->_msg_ptr += rr->rdlength;
+	}
+	if (++handle->_rrnum > handle->_counts[(int)section])
+		setsection(handle, (ns_sect)((int)section + 1));
+
+	/* All done. */
+	return (0);
+}
+
 /* Private. */
 
 static void