Powershell FTP-Download Script

# Here are the variables to change to your needs
# FTP server variables:
$ftpPath = 'ftp://ftp.server.com/'
$ftpUser = 'user'
$ftpPass = 'password'
$localPath = 'C:\install\app\'

# Email variables:
$smtpServer = "192.168.254.254"
$smtpFrom = "task1@domain.com"
$smtpTo = "administrator@domain.com"
$messageSubject = "APPNAME :: New Version downloaded"

# Fileserver share variables:
$share = '\\server1\Applications\Appname'
# end of changes


# get the file listing of the FTP folder
function Get-FtpDir ($url, $credentials)
{
  $request = [Net.FtpWebRequest]::Create($url)
  if ($credentials) { $request.Credentials = $credentials }
  $request.Method = [System.Net.WebRequestMethods+FTP]::ListDirectory
  (New-Object IO.StreamReader $request.GetResponse().GetResponseStream()).ReadToEnd() -split "`r`n"
}


# Needed for the download
$webclient = New-Object System.Net.WebClient
$webclient.Credentials = New-Object System.Net.NetworkCredential($ftpUser,$ftpPass)
$webclient.BaseAddress = $ftpPath

Get-FTPDir $ftpPath $webclient.Credentials |
  ? { $_ -like 'APPNAME*.exe' } |
  % {
      if (Test-Path ($localPath+$_)) { exit }
      $webClient.DownloadFile($_, $localPath+$_)
  }

# get the file listing of the FTP folder
function Get-FtpDir2 ($url, $credentials)
{
  $request = [Net.FtpWebRequest]::Create($url)
  if ($credentials) { $request.Credentials = $credentials }
  $request.Method = [System.Net.WebRequestMethods+FTP]::ListDirectory
  (New-Object IO.StreamReader $request.GetResponse().GetResponseStream()).ReadToEnd() -split "`r`n"
}


# Needed for the download
$webclient = New-Object System.Net.WebClient
$webclient.Credentials = New-Object System.Net.NetworkCredential($ftpUser,$ftpPass)
$webclient.BaseAddress = $ftpPath

Get-FTPDir2 $ftpPath $webclient.Credentials |
  ? { $_ -like 'updates.txt' } |
  % {
      if (Test-Path ($localPath+$_)) { Remove-Item $localPath\updates.txt }
      $webClient.DownloadFile($_, $localPath+$_)
  }

# Remove oldest files but the three latest
Get-ChildItem $localPath -filter *.exe |
sort CreationTime -Descending |
select -Skip 3 |
Remove-Item

# Read filenames and version from downloaded files
$fn = Split-Path "$localPath\*.*" -leaf -resolve
$split = $fn.split()
    $text1 = echo $split[0]
    $text2 = echo $split[1]
    $text3 = echo $split[2]

$body = "The following files have been downloaded: `n$text1 `n$text2 `n$text3"


# Send Email
Send-MailMessage -from $smtpfrom -to $smtpTo -Subject $messageSubject -Body $body -smtpServer $smtpserver


# Read the Product Version of the latest downloaded MAX-PAC.exe
$version = (Get-Item $localPath\$text1).VersionInfo.ProductVersion

# Test for the folder on the server share and if not exists create it
$DirExists = Test-Path $share\v$version
If ($DirExists -eq $True)
    { exit }
    else {

    # Copy the freshly downloaded files onto the share
    Copy-Item "C:\install\app\*.exe" -Destination (New-Item $share\v$version -Type Directory)
    } # End of Else