update

2026-04-15 15:45:50 -05:00
commit 1d304511b8
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+<#
+.SYNOPSIS
+    A short one-line action-based description, e.g. 'Tests if a function is valid'
+.DESCRIPTION
+    A longer description of the function, its purpose, common use cases, etc.
+.NOTES
+    Information or caveats about the function e.g. 'This function is not supported in Linux'
+.LINK
+    Specify a URI to a help page, this will show when Get-Help -Online is used.
+.EXAMPLE
+    Test-MyTestFunction -Verbose
+    Explanation of the function or its result. You can include multiple examples with additional .EXAMPLE lines
+#>
+
+function Get-SslCertificate {
+    [CmdletBinding()]
+    param (
+        [Parameter(Mandatory)]
+        [string]$DNSName
+    )
+
+    process {
+        Write-Verbose "Checking certificate for $DNSName"
+
+        $tcp = [Net.Sockets.TcpClient]::new($DNSName, 443)
+        $ssl = [Net.Security.SslStream]::new(
+            $tcp.GetStream(),
+            $false,
+            { $true }
+        )
+
+        $ssl.AuthenticateAsClient($DNSName)
+
+        $cert = [Security.Cryptography.X509Certificates.X509Certificate2]::new(
+            $ssl.RemoteCertificate
+        )
+
+        $ssl.Dispose()
+        $tcp.Dispose()
+
+        $cert
+    }
+}