PowerShell

Set a Remote File's Owner and Group

Demonstrates the Chilkat SFtp.SetOwnerAndGroup method, which sets the owner and group of a remote item. The arguments are the remote path (or handle), whether the first argument is a handle, and the new owner and group values.

Background: This is the SFTP equivalent of chown. Changing ownership is a privileged operation on Unix systems — ordinary users generally cannot give their files away — so expect it to fail unless the authenticated account has the necessary rights. It is most often used by administrative jobs that upload files which must then belong to a service account, such as a web server user.

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Add-Type -Path "C:\chilkat\ChilkatDotNet47-x64\ChilkatDotNet47.dll"

$success = $false

#  Demonstrates the SFtp.SetOwnerAndGroup method, which sets the owner and group of a remote item.
#  The 1st argument is the remote path (or handle), the 2nd (isHandle) indicates which, and the
#  3rd and 4th are the new owner and group.

$sftp = New-Object Chilkat.SFtp

#  Connect, authenticate, and initialize the SFTP subsystem.
$port = 22
$success = $sftp.Connect("sftp.example.com",$port)
if ($success -eq $false) {
    $($sftp.LastErrorText)
    exit
}

#  Normally you would not hard-code the password in source.  You should instead obtain it
#  from an interactive prompt, environment variable, or a secrets vault.
$password = "mySshPassword"

$success = $sftp.AuthenticatePw("mySshLogin",$password)
if ($success -eq $false) {
    $($sftp.LastErrorText)
    exit
}

$success = $sftp.InitializeSftp()
if ($success -eq $false) {
    $($sftp.LastErrorText)
    exit
}

#  The 1st argument is a path, so isHandle is $false.  Changing ownership typically requires
#  elevated privileges on the server.
$isHandle = $false
$success = $sftp.SetOwnerAndGroup("subdir/report.pdf",$isHandle,"www-data","www-data")
if ($success -eq $false) {
    $($sftp.LastErrorText)
    exit
}

$("Owner and group set.")

$sftp.Disconnect()