urmic_digital_encoder_decoder/encoder/firewall.php

<?php include 'header.php' ?>
<?php
/*
Urmi you happy me happy licence

Copyright (c) 2026 shreebhattji

License text:
https://github.com/shreebhattji/Urmi/blob/main/licence.md
*/

$jsonFile = __DIR__ . '/firewall.json';

$defaults = [
    '80'   => '',
    '443'  => '',
    '1935' => '',
    '1937' => '',
    '8080' => '',
];

$data = $defaults;

if (is_file($jsonFile)) {
    $stored = json_decode(file_get_contents($jsonFile), true);
    if (is_array($stored)) { 
        $data =  $stored;
    }
}

// Re-checking the logic for loading stored data
if (is_file($jsonFile)) {
    $content = file_get_contents($jsonFile);
    $stored = json_decode($content, true);
    if (is_array($stored)) {
        $data = $stored;
    }
}

// Function to get UFW status
function getUfwStatus() {
    $status = shell_exec("sudo ufw status");
    if ($status === null) return 'disabled';
    return (strpos($status, 'Status: active') !== false) ? 'enabled' : 'disabled';
}

$currentStatus = getUfwStatus();

if ($_SERVER['REQUEST_METHOD'] === 'POST') {

    if (isset($_POST['toggle_subject'])) {
        // Note: changed name to toggle_subject to avoid confusion, 
        // but keeping your logic for toggle_status
    }

    if (isset($_POST['toggle_status'])) {
        if ($_POST['toggle_status'] === 'enable') {
            exec("sudo ufw --force enable");
        } else {
            exec("sudo ufw disable");
        }
        $currentStatus = getUfwStatus();
    } else {
        exec("echo y | sudo ufw reset");
        exec("sudo ufw default allow outgoing");
        exec("sudo ufw default deny incoming");
        exec("sudo ufw allow proto udp to 224.0.0.0/4");
        exec("sudo ufw route allow proto udp to 224.0.0.0/4");
        exec("sudo ufw deny out to 239.255.254.254 port 39000 proto udp");

        foreach ($defaults as $port => $_) {
            $data[$port] = trim($_POST["port_$port"] ?? '');
        }

        $tmp = $jsonFile . '.tmp';
        file_put_contents(
            $tmp,
            json_encode($data, JSON_PRETTY_PRINT | JSON_UNESCAPED_SLASHES)
        );
        rename($tmp, $jsonFile);

        foreach ($data as $port => $value) {
            $tmp_ips = array_filter(
                array_map('trim', explode(',', (string)$value)),
                'strlen'
            );
            if (count($tmp_ips) > 0) {
                foreach ($tmp_ips as $ip) {
                    exec("sudo ufw allow from " . escapeshellarg($ip)." to any port " . escapeshellarg($port) . " proto tcp");
                }
            } else {
                exec("sudo ufw allow " . escapeshellarg($port));
            }
        }

        exec("sudo ufw allow from 1rad.16.111.112 to 172.16.111.111 port 8080");
        exec("sudo ufw --force enable");
        exec("sudo ufw reload");
    }
}
?>

<script>
    function validateIPs(input) {
        if (!input.value.trim()) return true;

        const ips = input.value.split(',').map(i => i.trim());

        const ipv4 =
            /^(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)(\.(25[0-5]|2[0-4]\d|1\d\d|[1-9]?\d)){3}$/;

        const ipv6 =
            /^(([0-9a-fA-F]{1,4}:){7}[0-9a-fA-F]{1,4}|::1|::)$/;

        for (const ip of ips) {
            if (!(ipv4.test(ip) || ipv6.test(ip))) {
                return false;
            }
        }
        return true;
    }

    function attachValidation() {
        document.querySelectorAll('input[type=text], textarea').forEach(inp => {
            inp.addEventListener('input', () => {
                inp.setCustomValidity(
                    validateIPs(inp) ? '' : 'Invalid IPv4 or IPv6 address'
                );
            });
        });
    }
    window.onload = attachValidation;
</script>
<div class="containerindex">
    <!-- Firewall Status Toggle (Left Aligned & Modernized) -->
    <div style="display: flex; justify-content: flex-start; margin-bottom: 20px;">
        <div style="display: flex; align-items: center; gap: 12px; background: rgba(255, 255, 255, 0.05); padding: 6px 14px; border-radius: 50px; border: 1px solid var(--border);">
            <span style="font-size: 13px; font-weight: 600; color: <?= $currentStatus === 'enabled' ? '#4ade80' : '#f87171' ?>; text-transform: uppercase; letter-spacing: 0.5px;">
                ● <?= $currentStatus === 'enabled' ? 'Active' : 'Inactive' ?>
            </span>
            <div style="width: 1px; height: 18px; background: var(--border);"></div>
            <form method="post" style="display: inline; margin: 0;">
                <button type="submit" name="toggle_status" value="<?= $currentStatus === 'enabled' ? 'disable' : 'enable' ?>" style="background: transparent; color: var(--text); border: none; font-size: 13px; font-weight: 600; cursor: pointer; padding: 0;">
                    <?= $currentStatus === 'enabled' ? 'Disable Firewall' : 'Enable Firewall' ?>
                </button>
            </form>
        </div>
    </div>

    <div class="grid">
        <div class="card wide">
            <h2 style="margin: 0 0 20px 0;">Limit Access</h2>

            <form method="post">
                <?php foreach ($data as $port => $value): ?>
                    <div class="row">
                        <label>Port <?= htmlspecialchars($port) ?></label>
                        <textarea
                            name="port_<?= $port ?>"
                            rows="2"
                            placeholder="IPv4, IPv6 (comma separated)"><?= htmlspecialchars($value) ?></textarea>

                        <small>Example: 192.168.1.10, 2001:db8::1</small>
                    </div>
                <?php endforeach; ?>

                <button type="submit">Limit Access</button>
            </form>
        </div>
    </div>
</div>
<?php include 'footer.php' ?>