Checks if the X-Frame-Options header is present

Check-XFrameOptions

add-type @"
    using System.Net;
    using System.Security.Cryptography.X509Certificates;
    public class TrustAllCertsPolicy : ICertificatePolicy {
        public bool CheckValidationResult(
            ServicePoint srvPoint, X509Certificate certificate,
            WebRequest request, int certificateProblem) {
            return true;
        }
    }
"@
[System.Net.ServicePointManager]::CertificatePolicy = New-Object TrustAllCertsPolicy
[System.Net.ServicePointManager]::SecurityProtocol = [System.Net.SecurityProtocolType]::Tls12

function Check-XFrameOptions
{
    [CmdletBinding()]
    Param(
        [Parameter(Mandatory = $true,
        HelpMessage = 'Input file.')]
        [string]$file
    )

    $lines = Get-Content $file

    foreach ($line in $lines)
    {
        $uri = "http://$line/"
        if ($line.Contains("443"))
        {
            $uri = "https://$line/"
        }

        try
        {
            $request = Invoke-WebRequest -Uri $uri
        }
        catch
        {
            if (!$request.StatusCode -eq [System.Net.HttpStatusCode]::NotFound)
            {
                Write-Host -ForegroundColor Red "$line - Connect"
                Out-File -Append "${file}_connect.txt" -InputObject $line
                continue
            }
        }

        $title = $($request.ParsedHtml.getElementsByTagName('title')).innertext;

        if($request.Headers.ContainsKey("X-Frame-Options"))
        {
            Write-Host -ForegroundColor Red "$line - False Positive"
            Out-File -Append "${file}_falsepositive.txt" -InputObject "$line`tFalse Positive"
        }
        else
        {
            Write-Host -ForegroundColor Green "$line - Verified $title"
            Out-File -Append "${file}_verified.txt" -InputObject "$line`tVerified`t$title"
        }
    }
}