#!/bin/bash
# fanta <fanta@56k.es> 03/May/2022
# Script sencillo para subir un archivo a un server ftp
# Permite tambien borrar un archivo y descargarlo
# Ejemplos:
#
# Upload a file example:      curlFTP -u /var/backups/vzdump-qemu-109-2022_05_03-01_47_35.vma.lzo
# Remove remote file example: curlFTP -r vzdump-qemu-109-2022_05_03-01_47_35.vma.lzo
# Download a file example:    curlFTP -d vzdump-qemu-109-2022_05_03-01_47_35.vma.lzo

user=""
passwd=""
ftpHost=""
mode="$1" # -d -u -r
file="$2"

function main(){
  checkCurl
  checkFTP
  checkMode
}

function checkCurl(){
  [ -z "$(whereis -b curl | awk {'print$2'})" ] && echo "curl - Maybe it is not installed on the system. Sorry but I can't continue." && exit
}

function checkFTP(){
  ftpProtocol=$(curl -V | grep -i "Protocols" | tr " " "\n" | grep -w ftp)
  if [ $ftpProtocol != "ftp" ]; then echo "Please compile curl with ftp protocol support"; exit; fi
}

function checkMode(){
  [ -z "$mode" ] && echo -e "Please specifies an option: -d -u -r\n -d download a file\n -u upload a file\n -r remove a file" && exit
  if [ $mode == "-u" ] ; then checkFile; fi
  if [ $mode == "-u" ] ; then uploadFile ; fi
  if [ $mode == "-r" ] ; then removeRemoteFile ; fi
  if [ $mode == "-d" ] ; then downloadFile ; fi
}

function checkFile(){
  [ -z "$file" ] && echo -e "Please specifies a filename." && exit
  if [ -f "$file" ]; then echo "File: $file"; else echo "i can't find the file [ $file ] in that path"; exit; fi
}

function uploadFile(){
  curl -T "$file" ftp://"$user":"$passwd"@"$ftpHost"/
}

function downloadFile(){
  curl --output $file ftp://"$user":"$passwd"@"$ftpHost"/"$file"
}

function removeRemoteFile(){
  curl -u "$user:$passwd" --quote "DELE $file" ftp://"$ftpHost"
}

main