FtpHandling/Get-FTPItem.ps1
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Function Get-FTPItem { <# .SYNOPSIS Send specific file from ftop server to location disk. .DESCRIPTION The Get-FTPItem cmdlet download file to specific location on local machine. .PARAMETER Path Specifies a path to ftp location. .PARAMETER LocalPath Specifies a local path. .PARAMETER RecreateFolders Recreate locally folders structure from ftp server. .PARAMETER BufferSize Specifies size of buffer. Default is 20KB. .PARAMETER Session Specifies a friendly name for the ftp session. Default session name is 'DefaultFTPSession'. .PARAMETER Overwrite Overwrite item in local path. .EXAMPLE PS P:\> Get-FTPItem -Path ftp://ftp.contoso.com/folder/subfolder1/test.xlsx -LocalPath P:\test 226 File send OK. PS P:\> Get-FTPItem -Path ftp://ftp.contoso.com/folder/subfolder1/test.xlsx -LocalPath P:\test A File name already exists in location: P:\test What do you want to do? [C] Cancel [O] Overwrite [?] Help (default is "O"): O 226 File send OK. .EXAMPLE PS P:\> Get-FTPChildItem -path folder/subfolder1 -Recurse | Get-FTPItem -localpath p:\test -RecreateFolders -Verbose VERBOSE: Performing operation "Download item: 'ftp://ftp.contoso.com/folder/subfolder1/test.xlsx'" on Target "p:\test\folder\subfolder1". VERBOSE: Creating folder: folder\subfolder1 226 File send OK. VERBOSE: Performing operation "Download item: 'ftp://ftp.contoso.com/folder/subfolder1/ziped.zip'" on Target "p:\test\folder\subfolder1". 226 File send OK. VERBOSE: Performing operation "Download item: 'ftp://ftp.contoso.com/folder/subfolder1/subfolder11/ziped.zip'" on Target "p:\test\folder\subfolder1\subfolder11". VERBOSE: Creating folder: folder\subfolder1\subfolder11 226 File send OK. .NOTES Author: Michal Gajda Blog : http://commandlinegeeks.com/ .LINK Get-FTPChildItem #> [CmdletBinding( SupportsShouldProcess=$True, ConfirmImpact="Low" )] Param( [parameter(Mandatory=$true, ValueFromPipelineByPropertyName=$true, ValueFromPipeline=$true)] [Alias("FullName")] [String]$Path, [String]$LocalPath = (Get-Location).Path, [Switch]$RecreateFolders, [Int]$BufferSize = 20KB, $Session = "DefaultFTPSession", [Switch]$Overwrite = $false ) Begin { if($Session -isnot [String]) { $CurrentSession = $Session } else { $CurrentSession = Get-Variable -Scope Global -Name $Session -ErrorAction SilentlyContinue -ValueOnly } if($null -eq $CurrentSession) { Write-Warning "Add-FTPItem: Cannot find session $Session. First use Set-FTPConnection to config FTP connection." Break Return } } Process { Write-Debug "Native path: $Path" if($Path -match "ftp://") { $RequestUri = $Path Write-Debug "Use original path: $RequestUri" } else { $RequestUri = $CurrentSession.RequestUri.OriginalString+"/"+$Path Write-Debug "Add ftp:// at start: $RequestUri" } $RequestUri = [regex]::Replace($RequestUri, '/$', '') $RequestUri = [regex]::Replace($RequestUri, '/+', '/') $RequestUri = [regex]::Replace($RequestUri, '^ftp:/', 'ftp://') Write-Debug "Remove additonal slash: $RequestUri" if ($pscmdlet.ShouldProcess($LocalPath,"Download item: '$RequestUri'")) { $TotalData = Get-FTPItemSize $RequestUri -Session $Session -Silent if($TotalData -eq -1) { Return } if($TotalData -eq 0) { $TotalData = 1 } $AbsolutePath = ($RequestUri -split $CurrentSession.ServicePoint.Address.AbsoluteUri)[1] $LastIndex = $AbsolutePath.LastIndexOf("/") if($LastIndex -eq -1) { $FolderPath = "\" } else { $FolderPath = $AbsolutePath.SubString(0,$LastIndex) -replace "/","\" } $FileName = $AbsolutePath.SubString($LastIndex+1) if($RecreateFolders) { if(!(Test-Path (Join-Path -Path $LocalPath -ChildPath $FolderPath))) { Write-Verbose "Creating folder: $FolderPath" New-Item -Type Directory -Path $LocalPath -Name $FolderPath | Out-Null } $LocalDir = Join-Path -Path $LocalPath -ChildPath $FolderPath } else { $LocalDir = $LocalPath } [System.Net.FtpWebRequest]$Request = [System.Net.WebRequest]::Create($RequestUri) $Request.Credentials = $CurrentSession.Credentials $Request.EnableSsl = $CurrentSession.EnableSsl $Request.KeepAlive = $CurrentSession.KeepAlive $Request.UseBinary = $CurrentSession.UseBinary $Request.UsePassive = $CurrentSession.UsePassive $Request.Method = [System.Net.WebRequestMethods+FTP]::DownloadFile Write-Debug "Use WebRequestMethods: $($Request.Method)" Try { [System.Net.ServicePointManager]::ServerCertificateValidationCallback = {$CurrentSession.ignoreCert} $SendFlag = 1 if((Get-ItemProperty $LocalDir -ErrorAction SilentlyContinue).Attributes -match "Directory") { $LocalDir = Join-Path -Path $LocalDir -ChildPath $FileName } if(Test-Path ($LocalDir)) { $FileSize = (Get-Item $LocalDir).Length if($Overwrite -eq $false) { $Title = "A file ($RequestUri) already exists in location: $LocalDir" $Message = "What do you want to do?" $CDOverwrite = New-Object System.Management.Automation.Host.ChoiceDescription "&Overwrite" $CDCancel = New-Object System.Management.Automation.Host.ChoiceDescription "&Cancel" if($FileSize -lt $TotalData) { $CDResume = New-Object System.Management.Automation.Host.ChoiceDescription "&Resume" $Options = [System.Management.Automation.Host.ChoiceDescription[]]($CDCancel, $CDOverwrite, $CDResume) $SendFlag = $host.ui.PromptForChoice($Title, $Message, $Options, 2) } else { $Options = [System.Management.Automation.Host.ChoiceDescription[]]($CDCancel, $CDOverwrite) $SendFlag = $host.ui.PromptForChoice($Title, $Message, $Options, 1) } } else { $SendFlag = 1 } } if($SendFlag) { [Byte[]]$Buffer = New-Object Byte[] $BufferSize $ReadedData = 0 $AllReadedData = 0 if($SendFlag -eq 2) { $File = New-Object IO.FileStream ($LocalDir,[IO.FileMode]::Append) $Request.UseBinary = $True $Request.ContentOffset = $FileSize $AllReadedData = $FileSize Write-Debug "Open File to append: $LocalDir" } else { $File = New-Object IO.FileStream ($LocalDir,[IO.FileMode]::Create) Write-Debug "Create File: $LocalDir" } $Response = $Request.GetResponse() $Stream = $Response.GetResponseStream() Do{ $ReadedData=$Stream.Read($Buffer,0,$Buffer.Length) $AllReadedData +=$ReadedData $File.Write($Buffer,0,$ReadedData) if($TotalData) { Write-Progress -Activity "Download File: $Path" -Status "Downloading:" -Percentcomplete ([int]($AllReadedData/$TotalData * 100)) } } While ($ReadedData -ne 0) $File.Close() Write-Debug "Close File: $LocalDir" $Status = $Response.StatusDescription $Response.Close() Return $Status } } Catch { Write-Error $_.Exception.Message -ErrorAction Stop } } } End{} } |