#!/bin/sh
#----------------------------------------------------------------------------
# rsyslogd-tools-create-rotate-conf generate logrotate files
#
# Copyright (c) 2001-2022 Ansgar Puester <ansgar.puester@freenet.de>
#
# Creation:     07.12.2021  ap
# Last Update:  $Id$
#
# This program 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 2 of the License, or
# (at your option) any later version.
#----------------------------------------------------------------------------

# include eislib
. /var/install/include/eislib

pgmname=$0

# set variables
basefile=/etc/config.d/base
rsyslogdfile=/etc/config.d/rsyslogd
iobuffersize='64k'

# ---------------------------------------------------------------------------
# get logfile compression extension from compresscmd in /etc/logrotate.conf
# ---------------------------------------------------------------------------
get_logfile_comp_extension ()
{
   # compresscmd including path
   compresscmd=$(grep ^compresscmd /etc/logrotate.conf | cut -f2 -d' ')
   # strip path
   compresscmd=$(echo $compresscmd | sed "s/.*\///")
   case "$compresscmd" in
        'xz')  # xz compression
               comp_extension='xz'
               ;;
        '')    # default gzip
               comp_extension='gz'
               ;;
        *)     # unknown
               ;;
   esac
}

#-------------------------------------------------------------------------------
# create rsyslogd logrotate configuration
#-------------------------------------------------------------------------------
create_rsyslogd_logrotate_config()
{
 [ "$act_rule" -le 9 ] && act_num='0'
 act_num="$act_num$act_rule"

  ACT_ROTATE_FILE="/etc/logrotate.d/rsyslogd_dyn_$act_num"
  #Test ACT_ROTATE_FILE="/tmp/logtest/rsyslogd_dyn_$act_num"
  mecho --info "Removing old rsyslogd logrotate file"
  rm -f $act_logrotate_file

  act_int='daily'
  act_count=10
  act_pre=''
  act_post='/etc/init.d/rsyslogd ––quiet restart'

  if [ "$act_name" = 'ALL' ]
  then
     act_find_name=''
  else
     act_find_name=" -name $act_name"
  fi
  # search directory, avoid files ending with .${comp_extension}
  act_filelist=$(find $act_path -type f$act_find_name | grep -v "\.${comp_extension}\$" | sort)
  #Test echo "act_filelist=$act_filelist"

  if [ -z "$act_filelist" ]
  then
     mecho --error "Could not find any file!"
     exit 1
  fi

  # act_rotate_mode is std
  {
  echo "#-------------------------------------------------------------------------------"
  echo "# $ACT_ROTATE_FILE file generated by $pgmname"
  echo "#"
  echo "# Do not edit this file, edit $rsyslogdfile"
  echo "# Creation date: `date`"
  echo "#-------------------------------------------------------------------------------"
  echo "$act_filelist {"
  echo "   $act_int"
  echo '   missingok'
  echo "   rotate $act_count"
  echo '   compress'
  echo '   notifempty'

  if [ ! "$act_pre" = '' ]
  then
     echo '   prerotate'
     echo "      $act_pre"
     echo '   endscript'
  fi

  if [ ! "$act_post" = '' ]
  then
     echo '   postrotate'
     echo "      $act_post"
     echo '   endscript'
  fi

  echo '}'
  } > $ACT_ROTATE_FILE

}

# ---------------------------------------------------------------------------
# main
# ---------------------------------------------------------------------------

# $1 RSYSLOGD_RULE_N
# $2 pathname
# $3 filename / ALL

if [ ! "$#"  = 3 ]
then
   mecho --error "Wrong number of parameters (3/$#)"
   mecho "Usage:"
   mecho "  $0 RSYSLOGD_RULE_N pathname filename"
   mecho "     RSYSLOGD_RULE_N: RSYSLOGD_RULE_N of rule using dynamic file"
   mecho "     pathname:        Path to search"
   mecho "     filename:        Filename to search for"
   mecho "                      ALL use all files"
   exit 1
fi

act_rule=$1
act_path=$2
act_name=$3

# Check START_RSYSLOGD
if [ "$START_RSYSLOGD" = 'no' ]
then
   mecho --warn "START_RSYSLOGD was set to 'no'"
   mecho --info "????"
else
   # check RSYSLOGD_CONFIGURATION
   if [ "$RSYSLOGD_CONFIGURATION" = 'manual' ]
   then
      mecho --warn "RSYSLOGD_CONFIGURATION was set to 'manual', no configuration will be created"
   else
      get_logfile_comp_extension
      create_rsyslogd_logrotate_config
   fi
fi

mecho --info "Finished"
exit