From 093ee7bf398acde737cada410fbe8aaa0184582d Mon Sep 17 00:00:00 2001
From: Michael Prokop <mika@grml.org>
Date: Tue, 13 Feb 2007 12:17:21 +0100
Subject: [PATCH] grml-hostname: support non-interactive mode and to not set
 hostname via hostname(1)

---
 debian/changelog        |  8 ++++++++
 manpages/grml-scripts.1 |  6 +++++-
 usr_sbin/grml-hostname  | 53 ++++++++++++++++++++++++++-----------------------
 3 files changed, 41 insertions(+), 26 deletions(-)

diff --git a/debian/changelog b/debian/changelog
index 1aed3a7..5fc9a7d 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,11 @@
+grml-scripts (0.9.16) unstable; urgency=low
+
+  * grml-hostname: support non-interactive mode and do not
+    set hostname via hostname(1) but write to according
+    files only so it does not break for example running X.
+
+ -- Michael Prokop <mika@grml.org>  Tue, 13 Feb 2007 12:08:39 +0100
+
 grml-scripts (0.9.15) unstable; urgency=low
 
   * The "I love working on new architectures! :)" release.
diff --git a/manpages/grml-scripts.1 b/manpages/grml-scripts.1
index a9390e2..0c50534 100644
--- a/manpages/grml-scripts.1
+++ b/manpages/grml-scripts.1
@@ -164,7 +164,11 @@ Central configuration interface to configure the grml system.
 .SS grml-config-root
 Configuration interface for admin tasks on the grml system.
 .SS grml-hostname
-Simple frontend to set hostname.
+Simple frontend to configure hostname in the corresponding
+files. When executed without a parameter a dialog based
+frontend will be used, when given a parameter the provided
+parameter will be used as hostname and script is executed in
+non-interactive mode.
 .SS grml-nessus
 Prepare nessus for use on grml system.
 .SS grml-postfix
diff --git a/usr_sbin/grml-hostname b/usr_sbin/grml-hostname
index b48449e..644b798 100755
--- a/usr_sbin/grml-hostname
+++ b/usr_sbin/grml-hostname
@@ -4,37 +4,37 @@
 # Authors:       (c) Michael Prokop <mika@grml.org>
 # Bug-Reports:   see http://grml.org/bugs/
 # License:       This file is licensed under the GPL v2.
-# Latest change: Son Dez 17 16:23:34 CET 2006 [mika]
+# Latest change: Die Feb 13 12:16:57 CET 2007 [mika]
 ################################################################################
 
-if [ $UID != 0 ] ; then
-   echo Error: become root before starting $0 >& 2
-   exit 100
-fi
+source /etc/grml/script-functions
+
+check4root || exit 1
 
 PN='grml-hostname'
-TMP=$(mktemp)
 OLDHOSTNAME="$(hostname)"
 
-if [ -x /usr/bin/random-hostname ] ; then
-   HOSTNAME="$(/usr/bin/random-hostname)"
+case "$1" in -h|--help) echo "Usage: $0 [hostname]">&2; exit 1 ;; esac
+
+if [ -n "$1" ] ; then
+   HOSTNAME="$1"
+   NONINTERACTIVE=1
 else
-   HOSTNAME="$(hostname)"
+   if [ -x /usr/bin/random-hostname ] ; then
+      HOSTNAME="$(/usr/bin/random-hostname)"
+   else
+      HOSTNAME="$(hostname)"
+   fi
 fi
 
-bailout() {
-  rm -f $TMP
-  exit 1
-}
-trap bailout 1 2 3 15
-
-# running inside grml2hd? Don't warn because of hostname + X
-[ -n "$GRML2HD" ] || MSG='\n\nNotice: setting a different hostname while running X is *not* recommend!'
-
-HOSTNAME="$(dialog --stdout --title "${PN}" --extra-button --extra-label "Propose hostname" \
---inputbox "Set hostname (/etc/hostname, /etc/hosts and /etc/postfix/main.cf will be adjusted)\
-\n\nTip: press 'Propose hostname' for another proposal${MSG}" 14 70 $HOSTNAME)"
-retval=$?
+if [ -z "$NONINTERACTIVE" ] ; then
+   HOSTNAME="$(dialog --stdout --title "${PN}" --extra-button --extra-label "Propose hostname" \
+   --inputbox "Set hostname (/etc/hostname, /etc/hosts and /etc/postfix/main.cf will be adjusted)\
+\n\nTip: press 'Propose hostname' for another proposal" 14 70 $HOSTNAME)"
+  retval=$?
+else
+  retval=0
+fi
 
 case $retval in
   0)
@@ -46,7 +46,12 @@ case $retval in
        sed -i "s/^myhostname = .*/myhostname = $HOSTNAME/" /etc/postfix/main.cf && POSTFIX='
 Configuration of myhostname in /etc/postfix/main.cf has been adjusted as well. Do not forget to restart postfix if necessary.'
      fi
-     dialog --stdout --title "${PN}" --msgbox "Setting hostname to $HOSTNAME was successful.$POSTFIX" 0 0
+     if [ -z "$NONINTERACTIVE" ] ; then
+        dialog --stdout --title "${PN}" --msgbox "Setting hostname to $HOSTNAME was successful.$POSTFIX" 0 0
+     else
+        echo "Setting hostname to $HOSTNAME: done"
+     fi
+     exit 0
      ;;
   1)
      echo "Cancel pressed."
@@ -58,6 +63,4 @@ Configuration of myhostname in /etc/postfix/main.cf has been adjusted as well. D
      ;;
 esac
 
-rm -f $TMP 2>/dev/null
-
 ## END OF FILE #################################################################
-- 
2.1.4