#!/bin/sh -e
#
# 2011-2013 Nico Schottelius (nico-cdist at schottelius.org)
# 2013 Steven Armstrong (steven-cdist armstrong.cc)
# 2014 Daniel Heule (hda at sfs.biz)
#
# This file is part of cdist.
#
# cdist is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# cdist is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with cdist. If not, see <http://www.gnu.org/licenses/>.
#

destination="/$__object_id"
state_should="$(cat "$__object/parameter/state")"
type="$(cat "$__object/explorer/type")"
stat_file="$__object/explorer/stat"

# variable to keep track if we have to set directory attributes
set_attributes=

mkdiropt=""
[ -f "$__object/parameter/parents" ] && mkdiropt="-p"

recursive=""
if [ -f "$__object/parameter/recursive" ]; then
   recursive="-R"
   # need to allways set attributes when recursive is given
   # as we don't want to check all subfolders/files
   set_attributes=1
fi

get_current_value() {
   if [ -s "$stat_file" ]; then
      _name="$1"
      _value="$2"
      case "$_value" in
         [0-9]*)
            _index=2
         ;;
         *)
            _index=3
         ;;
      esac
      awk '/'"$_name"':/ { print $'$_index' }' "$stat_file"
      unset _name _value _index
   fi
}

set_group() {
    echo chgrp "$recursive" \""$1"\" \""$destination"\"
    echo chgrp "$recursive" "$1" >> "$__messages_out"
}

set_owner() {
    echo chown "$recursive" \""$1"\" \""$destination"\"
    echo chown "$recursive" "$1" >> "$__messages_out"
}

set_mode() {
    echo chmod "$recursive" \""$1"\" \""$destination"\"
    echo chmod "$recursive" "$1" >> "$__messages_out"
}

case "$state_should" in
   present)
      if [ "$type" != "directory" ]; then
         set_attributes=1
         if [ "$type" != "none" ]; then
            # our destination is not a directory, remove whatever is there
            # and then create our directory and set all attributes
            echo rm -f "\"$destination\""
            echo "remove non directory" >> "$__messages_out"
         fi
         echo "mkdir $mkdiropt \"$destination\""
         echo "create" >> "$__messages_out"
      fi

      # Note: Mode - needs to happen last as a chown/chgrp can alter mode by
      # clearing S_ISUID and S_ISGID bits (see chown(2))
      for attribute in group owner mode; do
         if [ -f "$__object/parameter/$attribute" ]; then
            value_should="$(cat "$__object/parameter/$attribute")"
            value_is="$(get_current_value "$attribute" "$value_should")"

            # change 0xxx format to xxx format => same as stat returns
            if [ "$attribute" = mode ]; then
                value_should="$(echo "$value_should" | sed 's/^0\(...\)/\1/')"
            fi

            if [ "$set_attributes" = 1 ] || [ "$value_should" != "$value_is" ]; then
               "set_$attribute" "$value_should"
            fi
         fi
      done
   ;;
   absent)
        if [ "$type" = "directory" ]; then
            echo rm -rf \""$destination"\"
            echo remove >> "$__messages_out"
        fi
   ;;
   *)
      echo "Unknown state: $state_should" >&2
      exit 1
   ;;
esac