Param(
    [Parameter (Mandatory = $false,
                HelpMessage = "Enter the location of the Cerberus.wsdl file. May be a URL or a filesystem path."
    )]
    # By default, the WSDL file is served from the HTTPS Admin port by Cerberus
    # Server If the Admin interface has been changed in your Cerberus
    # environment and/or Cerberus is not running locally, change the below URL
    # to suit your environment
    [String] $WSDLUrl = "https://localhost:8443/wsdl/Cerberus.wsdl"
,
    [Parameter (Mandatory = $false)]
    # If credentials are not provided the user will be prompted to provide them
    [PSCredential] $CerberusCredentials
,
    [Parameter (Mandatory = $false)]
    # Cerberus FTP Server version 10.0.10 and later automatically publish the
    # correct service endpoint. If you are running an earlier version of
    # Cerberus the correct endpoint will need to be provided. Consult the
    # Remote, SOAP Admininstration Settings page for the correct URL The
    # out-of-the-box default is provided below for reference
    # "http://localhost:10001/service/cerberusftpservice"
    [String] $CerberusServiceUrl
)

if (-not $PSBoundParameters.containsKey('CerberusCredentials')) {
    $CerberusCredentials = Get-Credential -Message "Provide master admin credentials for Cerberus FTP Server"
} 

# This function allows PowerShell to make SSL connections using Tls1.2, which is disabled by default
function Enable-Tls12 {
    [Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12 
}

# Cerberus may use a self-signed certificate when running outside of a
# production environment. This certificate will be rejected when making HTTPS
# connections to the WSDL and SOAP service URL, failing the operation. The
# following function disables certificate validation for the current PowerShell
# session, allowing access to these resources.
function Disable-CertificateValidation {
    if (-not("dummy" -as [type])) {
        add-type -TypeDefinition @"
    using System;
    using System.Net;
    using System.Net.Security;
    using System.Security.Cryptography.X509Certificates;

    public static class Dummy {
        public static bool ReturnTrue(object sender,
            X509Certificate certificate,
            X509Chain chain,
            SslPolicyErrors sslPolicyErrors) { return true; }

        public static RemoteCertificateValidationCallback GetDelegate() {
            return new RemoteCertificateValidationCallback(Dummy.ReturnTrue);
        }
    }
"@
    }
    [System.Net.ServicePointManager]::ServerCertificateValidationCallback = [dummy]::GetDelegate()
}

# Call this function before New-WebServiceProxy if Cerberus' SOAP endpoint uses HTTPS
Enable-Tls12

# Call this function before New-WebServiceProxy if Cerberus is using a self-signed certificate
Disable-CertificateValidation

# New-WebServiceProxy creates a service proxy object for calling Cerberus SOAP
# APIs. Dependent classes are also created and placed in the "CerberusFtp"
# namespace.
$CerberusSvc = New-WebServiceProxy -Uri $wsdlUrl -Class CerberusFtp -Namespace CerberusFtp

# Override the endpoint URL if it has been provided in parameters
if ($PSBoundParameters.containsKey('CerberusServiceUrl') -eq $true){
    $CerberusSvc.Url = $CerberusServiceUrl 
}

# Populate a request object with Cerberus credentials
$request = @{
    credentials=@{
        user=$CerberusCredentials.UserName;
        password=$CerberusCredentials.GetNetworkCredential().password
    }
}

# Call the Cerberus SOAP operation on the proxy object, passing the request 
$infoResponse = $CerberusSvc.ServerInformation($request)

# Display the 'result' member of the response and 'result.version' details
$infoResponse.result 
$infoResponse.result.version