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From: Kevin Lo <kevlo@FreeBSD.org>
Date: Wed, 26 Sep 2012 09:29:49 +0000 (UTC)
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Subject: svn commit: r240954 - head/usr.bin/getent
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Author: kevlo
Date: Wed Sep 26 09:29:48 2012
New Revision: 240954
URL: http://svn.freebsd.org/changeset/base/240954

Log:
  Teach getent(1) to look up a hostname and find IPv6 addresses.
  
  PR:	bin/161548
  Submitted by:	matthew

Modified:
  head/usr.bin/getent/getent.c

Modified: head/usr.bin/getent/getent.c
==============================================================================
--- head/usr.bin/getent/getent.c	Wed Sep 26 09:27:38 2012	(r240953)
+++ head/usr.bin/getent/getent.c	Wed Sep 26 09:29:48 2012	(r240954)
@@ -277,7 +277,7 @@ hostsprint(const struct hostent *he)
 static int
 hosts(int argc, char *argv[])
 {
-	struct hostent	*he;
+	struct hostent	*he4, *he6;
 	char		addr[IN6ADDRSZ];
 	int		i, rv;
 
@@ -285,21 +285,31 @@ hosts(int argc, char *argv[])
 	assert(argv != NULL);
 
 	sethostent(1);
+	he4 = he6 = NULL;
 	rv = RV_OK;
 	if (argc == 2) {
-		while ((he = gethostent()) != NULL)
-			hostsprint(he);
+		while ((he4 = gethostent()) != NULL)
+			hostsprint(he4);
 	} else {
 		for (i = 2; i < argc; i++) {
-			if (inet_pton(AF_INET6, argv[i], (void *)addr) > 0)
-				he = gethostbyaddr(addr, IN6ADDRSZ, AF_INET6);
-			else if (inet_pton(AF_INET, argv[i], (void *)addr) > 0)
-				he = gethostbyaddr(addr, INADDRSZ, AF_INET);
-			else
-				he = gethostbyname(argv[i]);
-			if (he != NULL)
-				hostsprint(he);
-			else {
+			if (inet_pton(AF_INET6, argv[i], (void *)addr) > 0) {
+				he6 = gethostbyaddr(addr, IN6ADDRSZ, AF_INET6);
+				if (he6 != NULL)
+					hostsprint(he6);
+			} else if (inet_pton(AF_INET, argv[i],
+			    (void *)addr) > 0) {
+				he4 = gethostbyaddr(addr, INADDRSZ, AF_INET);
+				if (he4 != NULL)
+					hostsprint(he4);
+	       		} else {
+				he6 = gethostbyname2(argv[i], AF_INET6);
+				if (he6 != NULL)
+					hostsprint(he6);
+				he4 = gethostbyname(argv[i]);
+				if (he4 != NULL)
+					hostsprint(he4);
+			}
+			if ( he4 == NULL && he6 == NULL ) {
 				rv = RV_NOTFOUND;
 				break;
 			}