Don't let root run unopkg without --shared or --bundled option

with the exception of -h|--help.

It only makes sense to run unopkg with root priviledges if adding,
deleting etc. extensions system-wide for all users (i.e with --shared
or --bundled switch). In all other cases it only messes up access
rights to extensions, so prevent that.

Fusion of 723e0999 and 9444ffc9

Change-Id: Ifa273a4d66b85d9d7ed7e8e22036ccc821507fd2
Reviewed-on: https://gerrit.libreoffice.org/16293Reviewed-by: Stephan Bergmann <sbergman@redhat.com>
Tested-by: Stephan Bergmann <sbergman@redhat.com>

desktop/scripts/unopkg.sh

@@ -49,17 +49,35 @@ AIX)
     ;;
 esac
 
-#collect all bootstrap variables specified on the command line
-#so that they can be passed as arguments to javaldx later on
+help_mode=0
+isnotuser=0
 for arg in $@
 do
   case "$arg" in
+       #collect all bootstrap variables specified on the command line
+       #so that they can be passed as arguments to javaldx later on
        -env:*) BOOTSTRAPVARS=$BOOTSTRAPVARS" ""$arg";;
-       --shared) umask 0022;;
-           # make sure shared extensions will be readable by all users
+
+       # make sure shared extensions will be readable by all users
+       --shared)
+           umask 0022
+           isnotuser=1
+           ;;
+
+       --bundled) isnotuser=1;;
+       -h|--help) help_mode=1;;
   esac
 done
 
+# we don't really want root to run unopkg without --shared or --bundled option
+# but we might at least let him read help
+if [ "$(id -u)" -eq "0" ]; then
+    if [ $isnotuser -eq 0 ] && [ $help_mode -eq 0 ]; then
+         echo "Cannot run '${0} $*' as root without --shared or --bundled option."
+         exit 1
+    fi
+fi
+
 # extend the ld_library_path for java: javaldx checks the sofficerc for us
 if [ -x "${sd_prog}/javaldx" ] ; then
     my_path=`"${sd_prog}/javaldx" $BOOTSTRAPVARS \