X-Git-Url: http://git.grml.org/?a=blobdiff_plain;f=usr_sbin%2Fgrml-hostname;h=ade8631e240056bb1f666c115bf8369a83e11d2e;hb=f29c425ad79cbe31fca61397cbd3d97347f32cd7;hp=b529d1772107c632ef79b92b46880a7b0ca907c6;hpb=9375a86c1fe0f2936a7ff20f46aa98a4d5f1ffb3;p=grml-scripts.git

diff --git a/usr_sbin/grml-hostname b/usr_sbin/grml-hostname
index b529d17..ade8631 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
@@ -61,7 +75,7 @@ Configuration of myhostname in /etc/postfix/main.cf has been adjusted as well. D
        /etc/init.d/avahi-daemon restart
      fi
 
-     /etc/init.d/hostname.sh
+     hostname "$NEW_HOSTNAME"
 
      if [ -z "$NONINTERACTIVE" ] ; then
         dialog --stdout --title "${PN}" --msgbox "Setting hostname to $NEW_HOSTNAME was successful.$POSTFIX" 0 0