How to trap ftp success/failure

#!/bin/ksh
# Function : pick a given file from a given place and send it to any FTP server, it will try to trap 
# 		FTP major server codes, if success then it will <more detailes are omitted>
# How To use?
# Simply put this script somewhere in your machine then make +x this file and run it by passing the proper parameters
# Before you run this script , make sure the variable FTP_fixed_log_temp_dir is set. 
# this code done by (aasaady  at yahoo dot com), Saudi Arabia
if [ $# -ne 8 ]
then
  echo "Usage: $0 <host_name> <ftp_login>  <ftp_pass> <ftp_mode{asc|bin}> <source_dir> <source_file> <target_dir> <log_file>"
  exit 1
fi


# read passed parameters
ip_address=$1
ip_user=$2
ip_pass=$3
ftp_mode=$4
file_dir=$5
file_name=$6
target_dir=$7
log_file=$8

#Log & temp Directory for FTP purposes (not for transfere logging)
FTP_fixed_log_temp_dir=<your temp directory here>

# touched locally files folder 
touch_folder_name=${FTP_fixed_log_temp_dir}

#logfile is the script internal logging file where <Log_file> is user readable comma delemeted log (temperary log file)
ftp_logfile=${FTP_fixed_log_temp_dir}_${file_name}_internal.log

# get the file zise
file_size=$(ls -lh  ${file_dir}${file_name}| awk '{print $5} ')

#ignore signals
trap "" 1 2 3 15

#echo "FTP Connection Settings ->"
#echo "--------------------------"
#echo "ftp host     : ${ip_address}"
#echo "ftp user     : ${ip_user}"
#echo "ftp password : ${ip_pass}"
#echo "ftp mode     : ${ftp_mode}"
#echo "file_dir     : ${file_dir}"
#echo "ftp_file     : ${file_name}"
#echo "target_dir   : ${target_dir}" 
#echo "ftp logfile  : ${ftp_logfile}"
#echo "user logfile : ${log_file}"
#echo "Start Time   : $(date)"
#echo "--------------------------"


#run ftp command

ftp -n -v ${ip_address} <<-EOFtp >${ftp_logfile} 2>&1
user ${ip_user} ${ip_pass}
${ftp_mode}
prompt on
cd ${target_dir} 
lcd ${file_dir}
put ${file_name}
quit
EOFtp

#trap ftp code


f=$(more ${ftp_logfile} | grep 226 | wc -l) 
if [ $f != "0" ]
then
	echo "success FTP,${file_dir},${file_name},${file_size},${ip_address},${target_dir},$(date)" >> ${log_file}

		<do your actions here when FTP success>

	# remove the log file and other temp when finished
	rm ${ftp_logfile}_4_touch
	rm ${touch_folder_name}${file_name}

else
   f=$(more ${ftp_logfile} | grep 530 | wc -l) 
	if [ $f != "0" ]
	then
	echo "Failed FTP: login failure,${file_dir},${file_name},${file_size},${ip_address},${target_dir},$(date)" >> ${log_file}
		<do your actions here when FTP failed>
else
   f=$(more ${ftp_logfile} | grep 552 | wc -l) 
	if [ $f != "0" ]
	then
	echo "Failed FTP: disk space problem,${file_dir},${file_name},${file_size},${ip_address},${target_dir},$(date)" >> ${log_file}
		<do your actions here when FTP failed>
else
	echo "Failed FTP: host (connection) might have problems,${file_dir},${file_name},${file_size},${ip_address},${target_dir},$(date)" >> ${log_file}
			<do your actions here when FTP failed>
	    fi	
	fi
fi

# remove the log file
rm ${ftp_logfile}

# this is the return code for this script, althow if FTP not success but still the scipt considerd called successfully 
#  thanks to Emmad Kareem  who suggested this line
exit 0