#!/bin/bash

toolName=postgrey
toolDeps="$toolName"
toolWhitelistLoc="/etc/postgrey/whitelist_clients"
updateUrl="https://postgrey.schweikert.ch/pub/postgrey_whitelist_clients"

# Get script working directory
# (when called from a different directory)
WDIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >>/dev/null 2>&1 && pwd )"
CONFIG=0
CONFIG_FILE_NAME="${toolName}.cfg"
CONFIG_FILE_TEMPLATE="$WDIR/${CONFIG_FILE_NAME}.example"

#step_config() {
#  echo "Called once before executing steps."
#  ## e.g. to source a config file manually:
#  #. "$CONFIG_FILE"
#  ## or to use sequencer api:
#  #initSeqConfig "$CONFIG_FILE_NAME" "$CONFIG_FILE_TEMPLATE"
#  #if [ $? -eq 0 ] ; then
#  #  CONFIG=1
#  #fi
#}

step_1_info() { echo "Install $toolDeps"; }
step_1_alias() { echo "install"; }
step_1() {
  local aptOpt=
  if quiet;then
    aptOpt="-y"
  fi
  exe apt update
  exe apt install "$toolDeps" $aptOpt
}

step_2_info() { 
  echo "Add cron to update whitelist_clients from"
  echoinfo "$updateUrl"
}
step_2_alias() { echo "cron"; }
step_2() {
  addConf -s "$postCron" "$postCronLoc"
}
postCronLoc="/etc/cron.d/postgreyWhitelistUpdate"
postCron="# -q quiet -N timestamping (overwrite existing file) -O target file
01 23 5 * * root /usr/bin/wget -qNO \"$toolWhitelistLoc\" $updateUrl && /usr/sbin/service postgrey restart"

step_3_info() { echo "Configuration notes"; }
step_3_alias() { echo "notes"; }
step_3() {
  echo "$toolNotes"
}
toolNotes="
# Reduce default message delay to 1 minute
  [/etc/default/postgrey]
   POSTGREY_OPTS=\"--inet=10023 --delay=60\"

# Custom local whitelist rules
  [/etc/postgrey/whitelist_clients.local]
   # Rule examples
   # own domains
   mydomain.com
   # own network
   /^.*\.(lan|local)$/
   192.168.0.0/24
   fd21::/64
   # External domains in frequent use
   # Amazon mail system
   amazonses.com
"

step_10_info() { echo "Restart $toolName"; }
step_10_alias() { echo "restart"; }
step_10() {
  exe service $toolName restart
}

readonly sqr_minVersion=16
. /usr/local/bin/sequencer.sh