FTP Client

ftp-client is a client library for the FTP protocol in Haskell.

Examples

Insecure

withFTP "ftp.server.com" 21 $ \h welcome -> do
    print welcome
    login h "username" "password"
    print =<< nlst h []

Secured with TLS

withFTPS verifies the server's certificate chain and host name, so a server that cannot be validated is refused.

withFTPS "ftps.server.com" 21 $ \h welcome -> do
    print welcome
    login h "username" "password"
    print =<< nlst h []

To talk to a server whose certificate cannot be validated, pass your own settings. Disabling validation leaves the connection encrypted but not authenticated, so anyone on the network path can read the credentials and alter transferred data:

let insecure = def { settingDisableCertificateValidation = True }
withFTPSSettings insecure "ftps.server.com" 21 $ \h welcome ->
    print welcome