X-Git-Url: http://git.grml.org/?a=blobdiff_plain;ds=sidebyside;f=usr_sbin%2Fgrml-hostname;h=b7a6eab8667424bc23c8b97f2a04c07143b6282b;hb=2706049698b8bc7478aa252f5e3a4f394bad4e5e;hp=e97c3535580d1d5c3c2a8fafe7d6faec94db7742;hpb=3ea7b7562e8e55bc5a1d81b561d494266e5f9845;p=grml-scripts.git

diff --git a/usr_sbin/grml-hostname b/usr_sbin/grml-hostname
index e97c353..b7a6eab 100755
--- a/usr_sbin/grml-hostname
+++ b/usr_sbin/grml-hostname
@@ -37,6 +37,20 @@ else
   retval=0
 fi
 
+# stupid + simplified checking for valid hostname (according to RFC 952)
+VALIDATE=$(echo "$NEW_HOSTNAME" | tr --delete '[:alnum:]-')
+if [ -n "$VALIDATE" ] ; then
+  if [ -z "$NONINTERACTIVE" ] ; then
+    dialog --title "${PN}" \
+      --msgbox "Error: invalid characters specified in hostname: '$VALIDATE' can not be used inside hostnames." \
+      0 0
+    exec "$0"
+  else
+    echo "Error: invalid characters specified in hostname: '$VALIDATE' can not be used inside hostnames." >&2
+    exit 1
+  fi
+fi
+
 case $retval in
   0)
      echo "$NEW_HOSTNAME" > /etc/hostname
@@ -57,6 +71,10 @@ Configuration of myhostname in /etc/postfix/main.cf has been adjusted as well. D
        fi
      fi
 
+     if [ -x /etc/init.d/avahi-daemon ] && pgrep avahi-daemon >/dev/null ; then
+       /etc/init.d/avahi-daemon restart
+     fi
+
      /etc/init.d/hostname.sh
 
      if [ -z "$NONINTERACTIVE" ] ; then