Add script to add license w/custom label to vCenter Server

Author: William Lam

powershell/add-vcenter-license-with-label-via-mob.ps1

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+# Author: William Lam
+# Blog: www.williamlam.com
+# Description: Automating License Key Addition using Lookup Service MOB via PowerShell
+# Reference: https://williamlam.com/2023/02/how-to-automate-adding-a-license-into-vcenter-server-with-custom-label.html
+
+$vc_server = "vcsa.primp-industries.local"
+$vc_username = "[email protected]"
+$vc_password = "VMware1!"
+$license_name = "My Custom License Label"
+$license_key = "FILL-ME-IN"
+
+## DO NOT EDIT BEYOND HERE ##
+
+$mob_url = "https://$vc_server/ls/mob?moid=cis.license.management.SystemManagementService&method=AddLicenses"
+
+$secpasswd = ConvertTo-SecureString $vc_password -AsPlainText -Force
+$credential = New-Object System.Management.Automation.PSCredential($vc_username, $secpasswd)
+
+$Code = @'
+using System;
+using System.Collections.Generic;
+using System.Net.Http;
+using System.Net.Security;
+using System.Security.Cryptography.X509Certificates;
+
+namespace CertificateCapture
+{
+    public class Utility
+    {
+        public static Func<HttpRequestMessage,X509Certificate2,X509Chain,SslPolicyErrors,Boolean> ValidationCallback =
+            (message, cert, chain, errors) => {
+                var newCert = new X509Certificate2(cert);
+                var newChain = new X509Chain();
+                newChain.Build(newCert);
+                CapturedCertificates.Add(new CapturedCertificate(){
+                    Certificate =  newCert,
+                    CertificateChain = newChain,
+                    PolicyErrors = errors,
+                    URI = message.RequestUri
+                });
+                return true;
+            };
+        public static List<CapturedCertificate> CapturedCertificates = new List<CapturedCertificate>();
+    }
+
+    public class CapturedCertificate
+    {
+        public X509Certificate2 Certificate { get; set; }
+        public X509Chain CertificateChain { get; set; }
+        public SslPolicyErrors PolicyErrors { get; set; }
+        public Uri URI { get; set; }
+    }
+}
+'@
+if ($PSEdition -ne 'Core'){
+    Add-Type -AssemblyName System.Net.Http
+    if (-not ("CertificateCapture" -as [type])) {
+        Add-Type $Code -ReferencedAssemblies System.Net.Http
+    }
+} else {
+    if (-not ("CertificateCapture" -as [type])) {
+        Add-Type $Code
+    }
+}
+
+# Initial login to Lookup Service MOB using GET and store session using $vmware variable
+Write-Host -ForegroundColor Green "Logging into the Lookup Service MOB ..."
+$results = Invoke-WebRequest -Uri $mob_url -SessionVariable vmware -Credential $credential -Method GET -UseBasicParsing
+
+# Extract hidden vmware-session-nonce which must be included in future requests to prevent CSRF error
+# Credit to https://blog.netnerds.net/2013/07/use-powershell-to-keep-a-cookiejar-and-post-to-a-web-form/ for parsing vmware-session-nonce via Powershell
+if($results.StatusCode -eq 200) {
+    $null = $results.Content -match 'name="vmware-session-nonce" type="hidden" value="?([^\s^"]+)"'
+    $sessionnonce = $matches[1]
+} else {
+    $results
+    Write-host "Failed to login to Lookup Service MOB"
+    exit 1
+}
+
+$encoded_license_name = [System.Web.HttpUtility]::UrlEncode($license_name)
+
+# The POST data payload must include the vmware-session-nonce varaible + URL-encoded
+$body = @"
+vmware-session-nonce=${sessionnonce}&licenseAddSpecs=%3ClicenseAddSpecs+xmlns%3Axsi%3D%22http%3A%2F%2Fwww.w3.org%2F2001%2FXMLSchema-instance%22+xsi%3Atype%3D%22CisLicenseManagementSerialKeyLicenseAddSpec%22%3E%0D%0A++++%3Cname%3E${encoded_license_name}%3C%2Fname%3E%0D%0A++++%3CserialKeys%3E${license_key}%3C%2FserialKeys%3E%0D%0A%3C%2FlicenseAddSpecs%3E
+"@
+
+# Second request using a POST and specifying our session from initial login + body request
+$results = Invoke-WebRequest -Uri $mob_url -WebSession $vmware -Method POST -Body $body
+
+if($results.StatusCode -eq 200) {
+    Write-Host -ForegroundColor green "Successfully added new License key named `"${license_name}`" ..."
+} else {
+    Write-Error "Failed to add new vCenter License key named `"${license_name}`" ..."
+}
+
+# Logout out of Lookup Service MOB
+$mob_logout_url = "https://$vc_server/ls/mob/logout"
+Write-Host -ForegroundColor Green "Logging out of the Lookup Service MOB ..."
+$results = Invoke-WebRequest -Uri $mob_logout_url -WebSession $vmware -Method GET -SkipHttpErrorCheck