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|
#
# This script checks which groups the vdr user should belong to and adds
# it to the necessary groups or removes it from groups which are not needed
# anymore
#
# (c) 2007, Thomas Schmidt <tschmidt@debian.org>
# (c) 2007, Tobias Grimm <tg@e-tobi.net>
#
DIR="/usr/share/vdr/groups.d"
VDR_USER=vdr
ACTUAL_GROUPS=`groups $VDR_USER | cut -d' ' -f3-`
is_group_in_list()
{
local group=$1
shift
local group_list="$*"
local current_group
for current_group in $group_list; do
[ "$current_group" = "$group" ] && return
done
false
}
read_groups()
{
cat "$1" | grep -v "^#\|^$" | sed s/"\(.*\)#.*"/"\1"/ | xargs
}
add_to_groups()
{
local groups_file="$1"
local groups="`read_groups "$groups_file"`"
local group
for group in $groups; do
if ! is_group_in_list $group $ACTUAL_GROUPS; then
echo "Adding '$VDR_USER' to group '$group'"
adduser $VDR_USER $group > /dev/null 2>&1
fi
done
}
remove_from_groups()
{
local groups_file="$1"
local groups="`read_groups "$groups_file"`"
local needed_groups
local group
for file in $DIR/*; do
if [ "$file" != "$groups_file" ] ; then
needed_groups="$needed_groups `read_groups $file`"
fi
done
for group in $groups; do
if is_group_in_list $group $ACTUAL_GROUPS; then
if ! is_group_in_list $group $needed_groups; then
echo "Removing '$VDR_USER' from group '$group'"
deluser $VDR_USER $group > /dev/null 2>&1
fi
fi
done
}
show_help()
{
echo
echo "vdr-groups.sh"
echo "-------------"
echo "Shell script to be used by vdr plugin packages to register/deregister"
echo "required vdr group memberships."
echo
echo "/bin/sh /usr/lib/vdr/vdr-groups.sh --add <GROUP-FILE>"
echo "/bin/sh /usr/lib/vdr/vdr-groups.sh --remove <GROUP-FILE>"
echo
echo "The <GROUP-FILE> is the file in $DIR containing the list of groups"
echo "vdr should be added to or removed from."
echo
exit 127
}
#
# main()
#
if [ $# -ne 2 ]; then
show_help
fi
action="$1"
groups_file="$DIR/$2.groups"
if [ ! -e $groups_file ]; then
echo "WARNING: $groups_file does not exist. Can't adjust vdr group membership"
exit 0
fi
case "$action" in
--add)
add_to_groups "$groups_file"
;;
--remove)
remove_from_groups "$groups_file"
;;
*)
show_help
;;
esac
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