Display diff of DNSSEC config and CDS records for Porkbun with buttons to fix diffs.
Per
// ==UserScript==
// @name Porkbun CDS record diff
// @namespace teiken.dev
// @description Display diff of DNSSEC config and CDS records for Porkbun with buttons to fix diffs.
// @version 1
// @match https://porkbun.com/account/dnssec/*
// @author 2024, Wilfried Teiken
// @license MIT
// ==/UserScript==
var domain=window.location.pathname.split("/").pop();
console.log("domain: "+domain);
const xhttp = new XMLHttpRequest();
xhttp.onload = function() {
if (this.readyState == 4 && this.status == 200) {
var response = JSON.parse(this.responseText);
if (response.Status != 0) {
console.log("Error getting CDS: "+response.Status);
return;
}
if (!response.AD) {
console.log("CDS was not verified using DNSSEC");
return;
}
// Answer is verified, which means an existing DS was used to sign the CDS and it can be trusted.
// Extract the CDS entries
var cds = new Map();
for (i = 0; i < response.Answer.length; ++i) {
if (response.Answer[i].type == 59) {
var record = response.Answer[i].data.split(" ");
cds.set(record[0], record);
}
}
// Determine which items are already existing
var existing = new Map();
var buttons = document.getElementsByTagName("button");
for (i = 0; i < buttons.length; ++i) {
if (buttons[i].hasAttributes() && buttons[i].hasAttribute("data-keytag")) {
existing.set(buttons[i].getAttribute("data-keytag"), buttons[i]);
}
}
// Find the right element to insert the items at.
var insertPoint;
var titles = document.getElementsByClassName("lead");
for (i = 0; i < titles.length; ++i) {
if (titles[i].textContent == "Current DNSSEC Configuration") {
insertPoint = titles[i].parentNode;
}
}
if (!insertPoint) {
for (i = 0; i < titles.length; ++i) {
if (titles[i].textContent == "Create DNSSEC Record") {
insertPoint = titles[i].parentNode;
}
}
}
if (insertPoint) {
// Create an entry for every key found in the CDS set.
var newSection = document.createElement("div");
newSection.setAttribute("class", "alert alert-info");
newSection.setAttribute("style", "word-break: break-word;");
var newHeader = document.createElement("p");
newHeader.setAttribute("class", "lead");
newHeader.appendChild(document.createTextNode("Target DNSSEC Configuration"));
newSection.appendChild(newHeader);
var mismatches = 0;
for (const [key, value] of cds) {
var newItem = document.createElement("div");
newItem.appendChild(document.createElement("br"));
newItem.appendChild(document.createTextNode("keyTag: "+value[0]));
newItem.appendChild(document.createElement("br"));
newItem.appendChild(document.createTextNode("alg: "+value[1]));
newItem.appendChild(document.createElement("br"));
newItem.appendChild(document.createTextNode("digestType: "+value[2]));
newItem.appendChild(document.createElement("br"));
newItem.appendChild(document.createTextNode("digest: "+value[3]));
newItem.appendChild(document.createElement("br"));
if (existing.has(key)) {
newItem.setAttribute("style", "background-color:#5cb85c; color:#fff; margin:5pt;");
newItem.appendChild(document.createTextNode("Status: Already in DS"));
} else {
newItem.appendChild(document.createTextNode("Status: Missing in DS"));
newItem.appendChild(document.createElement("br"));
var newButton = document.createElement("button");
newButton.textContent = "Add to DS set";
newButton.setAttribute("class", "btn btn-success");
newButton.onclick = () => {
document.getElementById("keyTag").value=value[0];
document.getElementById("alg").value=value[1];
document.getElementById("digestType").value=value[2];
document.getElementById("digest").value=value[3];
document.getElementById("dnssecCreateButton").click();
};
newItem.setAttribute("style", "background-color:#c9302c; color:#fff; margin:5pt;");
newItem.appendChild(newButton);
++mismatches;
}
newSection.appendChild(newItem);
}
// Replicate the sections from the "current configuration" for all keys not in CDS.
for (const [key, button] of existing) {
if (!cds.has(key)) {
var newItem = document.createElement("div");
var toCopy = button;
for(i = 0; i < 9; ++i) {
if (toCopy.previousSibling) {
toCopy = toCopy.previousSibling;
}
}
while (toCopy != button) {
newItem.appendChild(toCopy.cloneNode());
toCopy = toCopy.nextSibling;
}
newItem.appendChild(document.createTextNode("Status: Should be removed from DS"));
newItem.appendChild(document.createElement("br"));
var newButton = button.cloneNode();
newButton.textContent = "DELETE";
newItem.appendChild(newButton);
newItem.setAttribute("style", "background-color:#c9302c; color:#fff; margin:5pt;");
newSection.appendChild(newItem);
++mismatches;
}
}
if (mismatches > 0) {
insertPoint.parentNode.insertBefore(newSection, insertPoint);
}
}
}
}
xhttp.open("GET", "https://dns.google/resolve?name="+domain+"&type=CDS", true);
xhttp.send();