Add HTTPS/SSL Binding to website in IIS from powershell

Edit:

I've crearted a powershell module to create and remove websites that includes this function, see it here post.

Since Wix seems to be frowned upon at work, I have been looking at PowerShell as a replacement to try to automate deployment of builds.

This little script will set the HTTPS binding. The certificate thumbprint is needed but the rest of the parameters are optional, defaulting to the most common option.

param ([String]$thumbprint, [String]$sitename="Default Web Site", [int]$port=443, [String]$hostheader)

if (-not($thumbprint))
{
  Write-Error "Certificate Thumprint is needed"
  exit
}

Import-Module WebAdministration

If (-not ([Security.Principal.WindowsPrincipal] [Security.Principal.WindowsIdentity]::GetCurrent()).IsInRole([Security.Principal.WindowsBuiltInRole] "Administrator"))
{
 Write-Warning "Run this script with elevated permissions"
 exit
}

function AddHTTPSBinding([String]$thumbprint, [String]$sitename, [int]$port, [String]$hostheader)
{
 $cert = Get-ChildItem cert:\LocalMachine\My | ?{$_.Thumbprint -eq $thumbprint}
 
 if( -not($(gci iis:\sslbindings| ? {$_.Port -eq $port})))
 {
  New-Item IIS:\SslBindings\0.0.0.0!$port -Value $cert | out-null
  
  if ($hostheader)
  {
   New-ItemProperty $(join-path iis:\Sites $sitename) -name bindings -value @{protocol="https";bindingInformation="*:$($port):$($hostheader)";certificateStoreName="My";certificateHash=$thumbprint}
  }
  else
  {
   New-ItemProperty $(join-path iis:\Sites $sitename) -name bindings -value @{protocol="https";bindingInformation="*:$($port):";certificateStoreName="My";certificateHash=$thumbprint}
  }
 }
 else
 {
  Write-Warning "SSL binding already exists on port $port"
 }
}

AddHTTPSBinding $thumbprint $sitename $port $hostheader

There is a New-WebBinding cmdlet in the WebAdministration module, but I think it needs to be used in conjunction with the Set-WebBinding to set the certificate and certificate store.