base-files, busybox: fix 22279, simplify code and get rid of awk

SVN-Revision: 22282

package/base-files/files/bin/login.sh

@@ -1,25 +1,16 @@
 #!/bin/sh
-# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2006-2010 OpenWrt.org
 
-
-regpassresult="0"
-grep '^root:[^!]' /etc/passwd >&- 2>&-
-regpassresult="$?"
-shadowresult="0"
-if [ -e "/etc/shadow" ]; then
-	grep '^root:[^!]' /etc/shadow >&- 2>&-
-        shadowresult="$?"
-fi
-[ "$regpassresult" = "0" ] && [ "$shadowresult" = "0" ] && [ -z "$FAILSAFE" ] && {
-    echo "Login failed."
-    exit 0
-} || {
+if grep -qs '^root:[^!]' /etc/passwd /etc/shadow && [ -z "$FAILSAFE" ]; then
+	echo "Login failed."
+	exit 0
+else
 cat << EOF
  === IMPORTANT ============================
   Use 'passwd' to set your login password
   this will disable telnet and enable SSH
  ------------------------------------------
 EOF
-}
+fi
 
 exec /bin/ash --login

package/busybox/files/telnet

@@ -1,17 +1,24 @@
 #!/bin/sh /etc/rc.common
-# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2006-2010 OpenWrt.org
 START=50
 
+has_root_pwd() {
+	local pwd=$([ -f "$1" ] && cat "$1")
+	      pwd="${pwd#*root:}"
+	      pwd="${pwd%%:*}"
+
+	test -n "${pwd#!}"
+}
+
 start() {
-	if 	[ \! -f /etc/passwd ] || \
-		( awk -F: '/^root:/ && ($2 != "") && ($2 !~ /\!/) {exit 1}' /etc/passwd 2>/dev/null && \
-		awk -F: '/^root:/ && ($2 != "") && ($2 !~ /\!/) {exit 1}' /etc/shadow 2>/dev/null ) || \
-		( [ \! -x /usr/sbin/dropbear ] && [ \! -x /usr/sbin/sshd ] )
-	then \
+	if ( ! has_root_pwd /etc/passwd && ! has_root_pwd /etc/shadow ) || \
+	   ( [ ! -x /usr/sbin/dropbear ] && [ ! -x /usr/sbin/sshd ] );
+	then
 		telnetd -l /bin/login.sh
 	fi
 }
 
 stop() {
-	killall telnetd
+	killall telnetd 2>/dev/null
 }
+