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controller.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8" />
<meta name="viewport" content="width=device-width, initial-scale=1.0" />
<meta
http-equiv="Cache-Control"
content="no-cache, no-store, must-revalidate"
/>
<meta http-equiv="Pragma" content="no-cache" />
<meta http-equiv="Expires" content="0" />
<title>Pi-hole Controller</title>
<style>
body {
font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
Helvetica, Arial, sans-serif;
max-width: 600px;
margin: 0 auto;
padding: 20px;
line-height: 1.6;
color: #333;
background-color: #f5f5f5;
}
.card {
background: #fff;
border-radius: 8px;
box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
padding: 20px;
margin-bottom: 20px;
}
h1 {
color: #367fa9;
margin-top: 0;
text-align: center;
}
input,
select,
button {
display: block;
width: 100%;
padding: 10px;
margin-bottom: 15px;
border: 1px solid #ddd;
border-radius: 4px;
box-sizing: border-box;
font-size: 16px;
}
button {
background: #4caf50;
color: white;
border: none;
cursor: pointer;
font-weight: bold;
transition: background-color 0.3s;
}
button:hover {
background: #3c9f40;
}
button:disabled {
background: #cccccc;
cursor: not-allowed;
}
.status {
margin: 15px 0;
padding: 15px;
border-radius: 4px;
text-align: center;
font-size: 18px;
font-weight: bold;
border: 2px solid transparent;
}
.error {
background-color: #ffebee;
color: #e4382c;
border-color: #e4382c;
}
.success {
background-color: #e8f5e9;
color: #4caf50;
border-color: #4caf50;
}
.info {
background-color: #e3f2fd;
color: #1565c0;
border-color: #1565c0;
}
.warning {
background-color: #ffebee;
color: #e4382c;
border-color: #e4382c;
}
.timer-display {
font-size: 24px;
text-align: center;
margin: 20px 0;
font-weight: bold;
}
.button-row {
display: flex;
gap: 10px;
margin-bottom: 15px;
}
.button-row button {
flex: 1;
margin-bottom: 0;
}
.presets {
display: grid;
grid-template-columns: repeat(3, 1fr);
gap: 10px;
margin-bottom: 15px;
}
.presets button {
margin-bottom: 0;
padding: 8px;
}
.presets button:hover {
filter: brightness(0.9);
}
.footer {
text-align: center;
font-size: 14px;
color: #666;
margin-top: 20px;
padding-top: 15px;
}
.footer a {
color: #367fa9;
text-decoration: none;
}
.footer a:hover {
text-decoration: underline;
}
.hidden {
display: none;
}
.text-center {
text-align: center;
}
.copy-hint {
font-size: 14px;
text-align: center;
color: #666;
margin-top: 20px;
font-style: italic;
}
.help-text {
font-size: 14px;
color: #666;
margin-bottom: 15px;
line-height: 1.4;
background-color: #f8f9fa;
padding: 10px;
border-radius: 4px;
border-top: 3px solid #367fa9;
}
</style>
</head>
<body>
<!-- Login Card (shown if password is not in URL) -->
<div class="card" id="login-card">
<h1>Pi-hole Controller</h1>
<p class="text-center">Enter your Pi-hole details to continue</p>
<form id="login-form">
<input
type="text"
id="pihole-url-input"
placeholder="Pi-hole URL (e.g., https://pi.hole)"
value="https://pi.hole"
required
/>
<input
type="password"
id="password-input"
placeholder="App Password"
required
/>
<div class="help-text">
To generate a Pi-hole app password, navigate to Settings,
<a href="#" id="api-settings-link" target="_blank"
>Web interface / API</a
>, switch from Basic to Expert mode, then select "Configure app
password" and copy the generated password.
</div>
<button type="submit">Continue</button>
</form>
<div id="login-status" class="status info hidden"></div>
</div>
<!-- Main Card (shown if password is in URL) -->
<div class="card hidden" id="main-card">
<h1>Pi-hole Controller</h1>
<div id="status-display" class="status info">
Connecting to Pi-hole...
</div>
<div id="timer-display" class="timer-display"></div>
<div class="button-row">
<button
id="enable-button"
class="success"
style="background-color: #4caf50; color: white"
>
Enable Blocking
</button>
<button
id="disable-button"
class="warning"
style="background-color: #e4382c; color: white"
>
Disable Blocking
</button>
</div>
<div id="preset-container" class="presets">
<!-- Preset buttons will be generated here -->
</div>
<div id="custom-duration" style="display: none">
<div style="display: flex; gap: 10px; margin-bottom: 10px">
<input
type="number"
id="custom-duration-value"
min="1"
max="1440"
value="5"
style="flex: 2"
/>
<div style="display: flex; flex: 1; height: 42px">
<button
id="toggle-seconds"
class="active"
style="
flex: 1;
border-radius: 4px 0 0 4px;
margin: 0;
background-color: #4caf50;
height: 100%;
box-sizing: border-box;
"
>
Sec
</button>
<button
id="toggle-minutes"
style="
flex: 1;
border-radius: 0 4px 4px 0;
margin: 0;
background-color: #ccc;
height: 100%;
box-sizing: border-box;
"
>
Min
</button>
</div>
</div>
<button
id="apply-custom"
style="background-color: #f7a145; color: white"
>
Apply Custom Duration
</button>
</div>
<div class="help-text">
Tip: You can bookmark or copy any URL after clicking an action button to
create a shortcut for that specific action
</div>
</div>
<div class="footer">
<div class="text-center" id="controller-version">
<!-- Version will be set by JavaScript -->
</div>
<div class="text-center">
<a href="#" id="admin-link" target="_blank"
>Open Pi-hole Admin Interface</a
>
</div>
</div>
<script>
// ====================================================
// CONFIGURATION
// ====================================================
const CONFIG = {
preset_durations: [
{ label: "10 sec", value: 10 },
{ label: "30 sec", value: 30 },
{ label: "1 min", value: 60 },
{ label: "5 min", value: 300 },
{ label: "10 min", value: 600 },
{ label: "Custom", value: "custom" },
],
refresh_interval: 5,
session_refresh_buffer: 30,
storage_key: "piholeSession",
custom_duration_key: "piholeCustomDuration",
controller_version: "1.2",
github_url: "https://github.com/mikeswanson/PiHoleController",
};
// ====================================================
// STATE MANAGEMENT
// ====================================================
let state = {
sid: null,
sidValidity: null,
sidCreatedAt: null,
blockingStatus: null,
timerEndTime: null,
countdownInterval: null,
autoRefreshInterval: null,
sessionCheckInterval: null,
csrf: null,
};
// Helper function to parse boolean parameters strictly
// Only accepts string values "true" or "false" - anything else returns the default
function parseStrictBoolean(value, defaultValue) {
if (value === "true") return true;
if (value === "false") return false;
return defaultValue;
}
// Parse URL parameters
const urlParams = new URLSearchParams(window.location.search);
const piholeUrl = urlParams.get("url") || "https://pi.hole";
const apiPassword = urlParams.get("pwd") || "";
const action = urlParams.get("action"); // 'enable', 'disable', or null
const duration = urlParams.get("duration")
? parseInt(urlParams.get("duration"))
: null;
const customTitle = urlParams.get("title") || "Pi-hole Controller";
const showEnableDisable = parseStrictBoolean(
urlParams.get("showButtons"),
true
);
const showPresets = parseStrictBoolean(
urlParams.get("showPresets"),
true
);
const showTips = parseStrictBoolean(urlParams.get("showTips"), true);
const showFooter = parseStrictBoolean(urlParams.get("showFooter"), true);
const customPresets = urlParams.get("presets"); // Custom comma-separated preset times
// Process custom presets if provided
if (customPresets) {
try {
const presetItems = customPresets.split(",");
const customPresetArray = [];
presetItems.forEach((item) => {
// Parse the preset (format: "label:value")
const parts = item.split(":");
if (parts.length === 2) {
const label = decodeURIComponent(parts[0].trim());
const value = parts[1].trim().toLowerCase();
if (value === "custom") {
customPresetArray.push({ label, value: "custom" });
} else {
// Try to parse as number, converting from minutes if needed
let numValue = parseInt(value);
if (!isNaN(numValue)) {
// Check if value ends with "m" for minutes
if (value.endsWith("m")) {
numValue *= 60; // Convert to seconds
}
customPresetArray.push({ label, value: numValue });
}
}
}
});
// Replace default presets if we have valid custom ones
if (customPresetArray.length > 0) {
CONFIG.preset_durations = customPresetArray;
}
} catch (e) {
console.error("Error parsing custom presets:", e);
}
}
// ====================================================
// DOM ELEMENTS
// ====================================================
const elements = {
loginCard: document.getElementById("login-card"),
mainCard: document.getElementById("main-card"),
loginForm: document.getElementById("login-form"),
loginStatus: document.getElementById("login-status"),
piholeUrlInput: document.getElementById("pihole-url-input"),
passwordInput: document.getElementById("password-input"),
statusDisplay: document.getElementById("status-display"),
timerDisplay: document.getElementById("timer-display"),
enableButton: document.getElementById("enable-button"),
disableButton: document.getElementById("disable-button"),
presetContainer: document.getElementById("preset-container"),
customDurationDiv: document.getElementById("custom-duration"),
applyCustomButton: document.getElementById("apply-custom"),
apiSettingsLink: document.getElementById("api-settings-link"),
adminLink: document.getElementById("admin-link"),
};
// ====================================================
// SESSION STORAGE FUNCTIONS
// ====================================================
function saveSessionData() {
const sessionData = {
sid: state.sid,
piholeUrl: piholeUrl,
sidCreatedAt: state.sidCreatedAt,
sidValidity: state.sidValidity,
csrf: state.csrf,
};
try {
localStorage.setItem(CONFIG.storage_key, JSON.stringify(sessionData));
console.log("Session data saved to localStorage");
} catch (e) {
console.error("Error saving session to localStorage:", e);
}
}
function loadSessionData() {
try {
const data = localStorage.getItem(CONFIG.storage_key);
if (data) {
const sessionData = JSON.parse(data);
if (sessionData.piholeUrl === piholeUrl) {
state.sid = sessionData.sid;
state.sidCreatedAt = sessionData.sidCreatedAt;
state.sidValidity = sessionData.sidValidity;
state.csrf = sessionData.csrf;
console.log("Session data loaded from localStorage");
if (isSessionValid()) {
return true;
}
}
}
} catch (e) {
console.error("Error loading session from localStorage:", e);
}
return false;
}
function clearSessionData() {
try {
localStorage.removeItem(CONFIG.storage_key);
console.log("Session data cleared from localStorage");
} catch (e) {
console.error("Error clearing session from localStorage:", e);
}
}
function isSessionValid() {
if (!state.sid || !state.sidCreatedAt || !state.sidValidity)
return false;
const now = Date.now();
const expirationTime = state.sidCreatedAt + state.sidValidity * 1000;
return now < expirationTime;
}
function getSessionTimeRemaining() {
if (!state.sid || !state.sidCreatedAt || !state.sidValidity) return 0;
const now = Date.now();
const expirationTime = state.sidCreatedAt + state.sidValidity * 1000;
return Math.max(0, Math.floor((expirationTime - now) / 1000));
}
// ====================================================
// UI HELPER FUNCTIONS
// ====================================================
function showStatus(message, type) {
elements.statusDisplay.className = `status ${type}`;
elements.statusDisplay.textContent = message;
}
function showLoginStatus(message, type) {
elements.loginStatus.className = `status ${type}`;
elements.loginStatus.textContent = message;
elements.loginStatus.classList.remove("hidden");
}
function formatTimeRemaining(totalSeconds) {
if (totalSeconds <= 0) return "0s";
const hours = Math.floor(totalSeconds / 3600);
const minutes = Math.floor((totalSeconds % 3600) / 60);
const seconds = totalSeconds % 60;
let timeString = "";
if (hours > 0) {
timeString += `${hours}h `;
}
if (hours > 0 || minutes > 0) {
timeString += `${minutes}m `;
}
timeString += `${seconds}s`;
return timeString;
}
// Helper function to handle parameters consistently
function buildUrlParams(baseParams = {}) {
const params = new URLSearchParams();
// 1. Always put URL and password first (if provided)
if (baseParams.url) params.set("url", baseParams.url);
if (baseParams.pwd) params.set("pwd", baseParams.pwd);
// 2. Preserve customization parameters in the middle
if (customTitle !== "Pi-hole Controller")
params.set("title", customTitle);
if (!showEnableDisable) params.set("showButtons", "false");
if (!showPresets) params.set("showPresets", "false");
if (!showTips) params.set("showTips", "false");
if (!showFooter) params.set("showFooter", "false");
if (customPresets) params.set("presets", customPresets);
// 3. Add action-specific parameters last (if provided)
if (baseParams.action) params.set("action", baseParams.action);
if (baseParams.duration !== undefined && baseParams.duration !== null) {
params.set("duration", baseParams.duration);
}
return params;
}
function generateActionUrl(action, duration = null) {
const url = new URL(window.location.href);
const params = buildUrlParams({
url: piholeUrl,
pwd: apiPassword,
action: action,
duration: duration,
});
url.search = params.toString();
return url.toString();
}
function updateApiSettingsLink() {
if (elements.apiSettingsLink) {
const baseUrl = elements.piholeUrlInput.value.trim();
elements.apiSettingsLink.href = `${baseUrl}/admin/settings/api`;
}
}
function updateAdminLink() {
if (elements.adminLink) {
const baseUrl = apiPassword
? piholeUrl
: elements.piholeUrlInput.value.trim();
elements.adminLink.href = `${baseUrl}/admin`;
}
}
// ====================================================
// API INTERACTION
// ====================================================
// Helper: Returns true if the controller is hosted on the same origin as the Pi-hole URL
function isSameOrigin() {
try {
return new URL(piholeUrl).origin === window.location.origin;
} catch (e) {
return false;
}
}
// Helper: Returns fetch options with credentials and CSRF token only if same origin
function getFetchOptions(method, body = null) {
const options = {
method,
headers: {
"Content-Type": "application/json",
},
};
if (body) {
options.body = JSON.stringify(body);
}
if (isSameOrigin()) {
options.credentials = "include";
if (state.csrf) {
options.headers["X-CSRF-Token"] = state.csrf;
}
}
return options;
}
async function createNewSession() {
try {
showStatus("Creating new Pi-hole session...", "info");
const options = getFetchOptions("POST", { password: apiPassword });
const response = await fetch(`${piholeUrl}/api/auth`, options);
const data = await response.json();
if (response.ok && data.session?.valid) {
state.sid = data.session.sid;
state.sidValidity = data.session.validity;
state.sidCreatedAt = Date.now();
state.csrf = data.session.csrf || null;
saveSessionData();
console.log(
`New session created. Valid for ${state.sidValidity} seconds.`
);
return true;
} else {
state.sid = null;
showStatus(
`Authentication failed: ${
data.error?.message ||
data.session?.message ||
"Check your API password"
}`,
"error"
);
return false;
}
} catch (error) {
state.sid = null;
showStatus(
`Connection error: ${error.message}. Check your Pi-hole URL.`,
"error"
);
return false;
}
}
async function authenticateSession() {
// Try loading from local storage
if (!state.sid) {
loadSessionData();
}
// Check if it is valid
if (state.sid) {
try {
const options = getFetchOptions("GET");
const response = await fetch(
`${piholeUrl}/api/dns/blocking?sid=${encodeURIComponent(
state.sid
)}`,
options
);
if (response.ok) {
return true;
} else if (response.status === 401) {
console.log("Session expired or invalid");
state.sid = null;
clearSessionData();
}
} catch (error) {
console.error("Error verifying session:", error);
}
}
// If we don't have a valid session, create a new one
if (!state.sid) {
return await createNewSession();
}
return false;
}
async function logoutSession() {
if (!state.sid) {
clearSessionData();
return true;
}
try {
const options = getFetchOptions("DELETE");
const response = await fetch(
`${piholeUrl}/api/auth?sid=${encodeURIComponent(state.sid)}`,
options
);
const success = response.status === 410;
if (success) {
console.log("Successfully logged out of Pi-hole session");
} else {
console.warn(
"Pi-hole logout may have failed, status:",
response.status
);
}
state.sid = null;
clearSessionData();
return true;
} catch (error) {
console.error("Error during Pi-hole logout:", error);
state.sid = null;
clearSessionData();
return false;
}
}
async function checkBlockingStatus() {
if (!isSessionValid()) {
const authSuccess = await authenticateSession();
if (!authSuccess) return;
}
try {
const options = getFetchOptions("GET");
const response = await fetch(
`${piholeUrl}/api/dns/blocking?sid=${encodeURIComponent(
state.sid
)}`,
options
);
if (response.status === 401) {
console.log("Session expired during status check");
state.sid = null;
clearSessionData();
const authSuccess = await authenticateSession();
if (!authSuccess) return;
return checkBlockingStatus();
}
const data = await response.json();
if (response.ok) {
if (state.sidCreatedAt) {
state.sidCreatedAt = Date.now();
saveSessionData();
}
state.blockingStatus =
data.blocking === true || data.blocking === "enabled";
updateBlockingStatusDisplay(state.blockingStatus, data.timer);
// Timer
if (data.timer) {
startCountdown(data.timer);
} else {
stopCountdown();
elements.timerDisplay.textContent = "";
}
} else {
showStatus(
`Error: ${data.error?.message || "Unknown error"}`,
"error"
);
}
} catch (error) {
showStatus(`Network error: ${error.message}`, "error");
}
}
function updateBlockingStatusDisplay(isEnabled, timer) {
if (isEnabled) {
showStatus("Pi-hole blocking is ENABLED", "success");
elements.enableButton.disabled = true;
elements.disableButton.disabled = false;
} else {
showStatus("Pi-hole blocking is DISABLED", "warning");
elements.enableButton.disabled = false;
elements.disableButton.disabled = true;
}
if (timer) {
const statusPrefix = isEnabled
? "Blocking enabled"
: "Blocking disabled";
elements.statusDisplay.textContent = `${statusPrefix} (Timer active)`;
}
}
async function executeAction() {
if (!isSessionValid()) {
const authSuccess = await authenticateSession();
if (!authSuccess) return;
}
try {
elements.enableButton.disabled = true;
elements.disableButton.disabled = true;
const blocking = action === "enable";
const payload = { blocking };
if (duration > 0 && action === "disable") {
payload.timer = duration;
}
const options = getFetchOptions("POST", payload);
const response = await fetch(
`${piholeUrl}/api/dns/blocking?sid=${encodeURIComponent(
state.sid
)}`,
options
);
if (response.status === 401) {
console.log("Session expired during action execution");
state.sid = null;
clearSessionData();
const authSuccess = await authenticateSession();
if (!authSuccess) {
elements.enableButton.disabled = false;
elements.disableButton.disabled = false;
return;
}
return executeAction();
}
const data = await response.json();
if (!response.ok) {
showStatus(
`Error: ${data.error?.message || "Unknown error"}`,
"error"
);
} else {
if (data.session?.sid) {
state.sid = data.session.sid;
state.csrf = data.session.csrf || null;
state.sidValidity = data.session.validity;
state.sidCreatedAt = Date.now();
saveSessionData();
} else {
state.sidCreatedAt = Date.now();
saveSessionData();
}
if (action === "enable") {
showStatus("Pi-hole blocking has been ENABLED", "success");
} else if (action === "disable") {
const durationMsg = duration
? ` for ${formatTimeRemaining(duration)}`
: "";
showStatus(
`Pi-hole blocking has been DISABLED${durationMsg}`,
"warning"
);
}
}
await checkBlockingStatus();
} catch (error) {
showStatus(`Network error: ${error.message}`, "error");
} finally {
if (elements.enableButton && elements.disableButton) {
elements.enableButton.disabled = state.blockingStatus;
elements.disableButton.disabled = !state.blockingStatus;
}
}
}
function setBlockingStatus(blocking, timer = null) {
const actionUrl = generateActionUrl(
blocking ? "enable" : "disable",
timer
);
window.location.href = actionUrl;
}
// ====================================================
// TIMER FUNCTIONS
// ====================================================
function startCountdown(seconds) {
stopCountdown();
state.timerEndTime = Date.now() + seconds * 1000;
updateTimerDisplay();
state.countdownInterval = setInterval(updateTimerDisplay, 1000);
}
function updateTimerDisplay() {
const now = Date.now();
const timeRemaining = Math.max(
0,
Math.floor((state.timerEndTime - now) / 1000)
);
if (timeRemaining <= 0) {
elements.timerDisplay.textContent = "";
stopCountdown();
checkBlockingStatus();
} else {
const formattedTime = formatTimeRemaining(timeRemaining);
const statusText = state.blockingStatus
? `Blocking will be disabled in: ${formattedTime}`
: `Blocking will be enabled in: ${formattedTime}`;
elements.timerDisplay.textContent = statusText;
}
}
function stopCountdown() {
if (state.countdownInterval) {
clearInterval(state.countdownInterval);
state.countdownInterval = null;
}
}
function checkSessionExpiration() {
if (state.sid && !isSessionValid()) {
console.log("Session expired during periodic check");
if (!elements.mainCard.classList.contains("hidden")) {
authenticateSession();
}
}
}
// ====================================================
// UI INITIALIZATION
// ====================================================
function setupPresetButtons() {
elements.presetContainer.innerHTML = "";
CONFIG.preset_durations.forEach((preset) => {
const button = document.createElement("button");
button.textContent = preset.label;
button.className = "preset-button";
button.dataset.value = preset.value;
button.addEventListener("click", () => {
if (preset.value === "custom") {
elements.customDurationDiv.style.display = "block";
loadCustomDurationSettings();
} else {
setBlockingStatus(false, preset.value);
}
});
button.style.backgroundColor = "#f7a145";
button.style.color = "white";
elements.presetContainer.appendChild(button);
});
}
// ====================================================
// INITIALIZATION
// ====================================================
async function initialize() {
// Set custom title if provided
document.title = customTitle;
// Update headings in both cards
const titleElements = document.querySelectorAll("h1");
titleElements.forEach((el) => {
el.textContent = customTitle;
});
// Show/hide tips
if (!showTips) {
const tipElements = document.querySelectorAll(".help-text");
tipElements.forEach((el) => (el.style.display = "none"));
}
// Show/hide footer
if (!showFooter) {
const footer = document.querySelector(".footer");
if (footer) footer.style.display = "none";
}
if (apiPassword) {
elements.loginCard.classList.add("hidden");
elements.mainCard.classList.remove("hidden");
// Apply UI customization options
if (
!showEnableDisable &&
elements.enableButton &&
elements.disableButton
) {
const buttonRow = elements.enableButton.closest(".button-row");
if (buttonRow) buttonRow.style.display = "none";
}
// Show/hide preset buttons
if (!showPresets) {
if (elements.presetContainer)
elements.presetContainer.style.display = "none";
if (elements.customDurationDiv)
elements.customDurationDiv.style.display = "none";
}
// Setup preset buttons
setupPresetButtons();
updateAdminLink();
await authenticateSession();
await checkBlockingStatus();
if (action) {
await executeAction();
}
if (CONFIG.refresh_interval > 0) {
state.autoRefreshInterval = setInterval(
checkBlockingStatus,
CONFIG.refresh_interval * 1000
);
}
state.sessionCheckInterval = setInterval(
checkSessionExpiration,
10000
);
} else {
// No password in URL → show login card
// Also log out to clear any prior session
logoutSession();
elements.loginCard.classList.remove("hidden");
elements.mainCard.classList.add("hidden");
elements.piholeUrlInput.value = piholeUrl;
updateAdminLink();
}
}
function updateVersionDisplay() {
const versionElement = document.getElementById("controller-version");
if (versionElement) {
versionElement.innerHTML = `<a href="${CONFIG.github_url}" target="_blank">Pi-hole Controller ${CONFIG.controller_version}</a>`;
}
}
// ====================================================
// EVENT LISTENERS
// ====================================================
elements.loginForm.addEventListener("submit", (e) => {
e.preventDefault();
const enteredUrl = elements.piholeUrlInput.value.trim();