Public/Connection.ps1

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#
# Copyright 2018, Alexis La Goutte <alexis dot lagoutte at gmail dot com>
#
# SPDX-License-Identifier: Apache-2.0
#

function Connect-NSXT {

    <#
      .SYNOPSIS
      Connect to a NSX-T
 
      .DESCRIPTION
      Connect to a NSX-T
 
      .EXAMPLE
      Connect-NSXT -Server 192.0.2.1
 
      Connect to a NSX-T with IP 192.0.2.1
 
      .EXAMPLE
      Connect-NSXT -Server 192.0.2.1 -SkipCertificateCheck
 
      Connect to a NSX-T with IP 192.0.2.1 and disable Certificate (chain) check
 
      .EXAMPLE
      Connect-NSX-T -Server 192.0.2.1 -port 4443
 
      Connect to a NSX-T using HTTPS (with port 4443) with IP 192.0.2.1 using (Get-)credential
 
      .EXAMPLE
      $cred = get-credential
      Connect-NSXT -Server 192.0.2.1 -credential $cred
 
      Connect to a NSX-T with IP 192.0.2.1 and passing (Get-)credential
 
      .EXAMPLE
      $mysecpassword = ConvertTo-SecureString mypassword -AsPlainText -Force
      Connect-NSXT -Server 192.0.2.1 -Username manager -Password $mysecpassword
 
      Connect to a NSX-T with IP 192.0.2.1 using Username and Password
 
      .EXAMPLE
      $nsxt1 = Connect-NSXT -Server 192.0.2.1
      Connect to an NSX-T with IP 192.0.2.1 and store connection info to $nsxt1 variable
 
      .EXAMPLE
      $nsxt2 = Connect-NSXT -Server 192.0.2.1 -DefaultConnection:$false
 
      Connect to an NSX-T with IP 192.0.2.1 and store connection info to $nsxt2 variable
      and don't store connection on global ($DefaultNSXTConnection) variable
  #>


    Param(
        [Parameter(Mandatory = $true, position = 1)]
        [String]$Server,
        [Parameter(Mandatory = $false)]
        [String]$Username,
        [Parameter(Mandatory = $false)]
        [SecureString]$Password,
        [Parameter(Mandatory = $false)]
        [PSCredential]$Credentials,
        [switch]$SkipCertificateCheck = $false,
        [Parameter(Mandatory = $false)]
        [ValidateRange(1, 65535)]
        [int]$port=443,
        [Parameter(Mandatory = $false)]
        [boolean]$DefaultConnection=$true
    )

    Begin {
    }

    Process {

        $connection = @{server = ""; port = ""; headers = ""; invokeParams = ""}

        #If there is a password (and a user), create a credentials
        if ($Password) {
            $Credentials = New-Object System.Management.Automation.PSCredential($Username, $Password)
        }
        #Not Credentials (and no password)
        if ($null -eq $Credentials) {
            $Credentials = Get-Credential -Message 'Please enter administrative credentials for your NSX-T'
        }

        $cred = $Credentials.username + ":" + $Credentials.GetNetworkCredential().Password
        $base64 = [System.Convert]::ToBase64String([System.Text.Encoding]::ASCII.GetBytes($cred))
        $headers = @{ Authorization = "Basic " + $base64; Accept = "application/json"; "Content-type" = "application/json"}
        $invokeParams = @{DisableKeepAlive = $false; UseBasicParsing = $true; SkipCertificateCheck = $SkipCertificateCheck }


        if ("Desktop" -eq $PSVersionTable.PsEdition) {
            #Remove -SkipCertificateCheck from Invoke Parameter (not supported <= PS 5)
            $invokeParams.remove("SkipCertificateCheck")
        }
        else {
            #Core Edition
            #Remove -UseBasicParsing (Enable by default with PowerShell 6/Core)
            $invokeParams.remove("UseBasicParsing")
        }

        #for PowerShell (<=) 5 (Desktop), Enable TLS 1.1, 1.2 and Disable SSL chain trust (needed/recommanded by VMware NSX-T)
        if ("Desktop" -eq $PSVersionTable.PsEdition) {
            #Enable TLS 1.1 and 1.2
            Set-NSXTCipherSSL
            if ($SkipCertificateCheck) {
                #Disable SSL chain trust...
                Set-NSXTuntrustedSSL
            }
        }

        $connection.server = $server
        $connection.headers = $headers
        $connection.port = $port
        $connection.invokeParams = $invokeParams

        if ( $DefaultConnection ) {
            set-variable -name DefaultNSXTConnection -value $connection -scope Global
        }

        $connection
    }

    End {
    }
}

function Disconnect-NSXT {

    <#
        .SYNOPSIS
        Disconnect to a NSX-T
 
        .DESCRIPTION
        Disconnect the connection on NSX-T
 
        .EXAMPLE
        Disconnect-NSXT
 
        Disconnect the connection
 
        .EXAMPLE
        Disconnect-NSXT -noconfirm
 
        Disconnect the connection with no confirmation
 
    #>


    Param(
        [Parameter(Mandatory = $false)]
        [switch]$noconfirm
    )

    Begin {
    }

    Process {

        if ( -not ( $Noconfirm )) {
            $message = "Remove NSX-T connection."
            $question = "Proceed with removal of NSX-T connection ?"
            $choices = New-Object Collections.ObjectModel.Collection[Management.Automation.Host.ChoiceDescription]
            $choices.Add((New-Object Management.Automation.Host.ChoiceDescription -ArgumentList '&Yes'))
            $choices.Add((New-Object Management.Automation.Host.ChoiceDescription -ArgumentList '&No'))

            $decision = $Host.UI.PromptForChoice($message, $question, $choices, 1)
        }
        else { $decision = 0 }
        if ($decision -eq 0) {
            Write-Progress -activity "Remove NSX-T connection"
            write-progress -activity "Remove NSX-T connection" -completed
            if (Test-Path variable:global:DefaultNSXTConnection) {
                Remove-Variable -name DefaultNSXTConnection -scope global
            }
        }

    }

    End {
    }
}