LabyrinthAP/includes/functions.php

<?php
/* Functions for Networking */

function mask2cidr($mask)
{
    $long = ip2long($mask);
    $base = ip2long("255.255.255.255");
    return 32 - log(($long ^ $base) + 1, 2);
}

/* Functions to write ini files */

function write_php_ini($array, $file)
{
    $res = [];
    foreach ($array as $key => $val) {
        if (is_array($val)) {
            $res[] = "[$key]";
            foreach ($val as $skey => $sval) {
                $res[] =
                    "$skey = " .
                    (is_numeric($sval) ? $sval : '"' . $sval . '"');
            }
        } else {
            $res[] = "$key = " . (is_numeric($val) ? $val : '"' . $val . '"');
        }
    }
    if (safefilerewrite($file, implode("\r\n", $res))) {
        return true;
    } else {
        return false;
    }
}

function safefilerewrite($fileName, $dataToSave)
{
    if ($fp = fopen($fileName, "w")) {
        $startTime = microtime(true);
        do {
            $canWrite = flock($fp, LOCK_EX);
            // If lock not obtained sleep for 0 - 100 milliseconds, to avoid collision and CPU load
            if (!$canWrite) {
                usleep(round(rand(0, 100) * 1000));
            }
        } while (!$canWrite and microtime(true) - $startTime < 5);

        //file was locked so now we can store information
        if ($canWrite) {
            fwrite($fp, $dataToSave);
            flock($fp, LOCK_UN);
        }
        fclose($fp);
        return true;
    } else {
        return false;
    }
}

//Function to get string between used for Mobile.sh

function get_string_between($string, $start, $end)
{
    $string = " " . $string;
    $ini = strpos($string, $start);
    if ($ini == 0) {
        return "";
    }
    $ini += strlen($start);
    $len = strpos($string, $end, $ini) - $ini;
    return substr($string, $ini, $len);
}

/**
 *
 * Add CSRF Token to form
 *
 */
function CSRFToken()
{
    ?>
<input id="csrf_token" type="hidden" name="csrf_token" value="<?php echo htmlspecialchars(
    $_SESSION["csrf_token"],
    ENT_QUOTES
); ?>" />
<?php
}

/**
 *
 * Validate CSRF Token
 *
 */
function CSRFValidate()
{
    if (hash_equals($_POST["csrf_token"], $_SESSION["csrf_token"])) {
        return true;
    } else {
        error_log("CSRF violation");
        return false;
    }
}

/**
 * Test whether array is associative
 */
function isAssoc($arr)
{
    return array_keys($arr) !== range(0, count($arr) - 1);
}

/**
 *
 * Display a selector field for a form. Arguments are:
 *   $name:     Field name
 *   $options:  Array of options
 *   $selected: Selected option (optional)
 *       If $options is an associative array this should be the key
 *
 */
function SelectorOptions($name, $options, $selected = null, $id = null)
{
    echo '<select class="form-control" name="' .
        htmlspecialchars($name, ENT_QUOTES) .
        '"';
    if (isset($id)) {
        echo ' id="' . htmlspecialchars($id, ENT_QUOTES) . '"';
    }

    echo ">", PHP_EOL;
    foreach ($options as $opt => $label) {
        $select = "";
        $key = isAssoc($options) ? $opt : $label;
        if ($key == $selected) {
            $select = ' selected="selected"';
        }

        echo '<option value="' .
        htmlspecialchars($key, ENT_QUOTES) .
        '"' .
        $select .
        ">" .
        htmlspecialchars($label, ENT_QUOTES) .
        "</option>",
            PHP_EOL;
    }

    echo "</select>", PHP_EOL;
}

/**
 *
 * @param string $input
 * @param string $string
 * @param int $offset
 * @param string $separator
 * @return $string
 */
function GetDistString($input, $string, $offset, $separator)
{
    $string = substr(
        $input,
        strpos($input, $string) + $offset,
        strpos(substr($input, strpos($input, $string) + $offset), $separator)
    );
    return $string;
}

/**
 *
 * @param array $arrConfig
 * @return $config
 */
function ParseConfig($arrConfig)
{
    $config = [];
    foreach ($arrConfig as $line) {
        $line = trim($line);
        if ($line != "" && $line[0] != "#") {
            $arrLine = explode("=", $line);
            $config[$arrLine[0]] = count($arrLine) > 1 ? $arrLine[1] : true;
        }
    }
    return $config;
}

/**
 *
 * @param string $freq
 * @return $channel
 */
function ConvertToChannel($freq)
{
    if ($freq >= 2412 && $freq <= 2484) {
        $channel = ($freq - 2407) / 5;
    } elseif ($freq >= 4915 && $freq <= 4980) {
        $channel = ($freq - 4910) / 5 + 182;
    } elseif ($freq >= 5035 && $freq <= 5865) {
        $channel = ($freq - 5030) / 5 + 6;
    } else {
        $channel = -1;
    }
    if ($channel >= 1 && $channel <= 196) {
        return $channel;
    } else {
        return "Invalid Channel";
    }
}

/**
 * Converts WPA security string to readable format
 * @param string $security
 * @return string
 */
function ConvertToSecurity($security)
{
    $options = [];
    preg_match_all("/\[([^\]]+)\]/s", $security, $matches);
    foreach ($matches[1] as $match) {
        if (preg_match("/^(WPA\d?)/", $match, $protocol_match)) {
            $protocol = $protocol_match[1];
            $matchArr = explode("-", $match);
            if (count($matchArr) > 2) {
                $options[] = htmlspecialchars(
                    $protocol . " (" . $matchArr[2] . ")",
                    ENT_QUOTES
                );
            } else {
                $options[] = htmlspecialchars($protocol, ENT_QUOTES);
            }
        }
    }

    if (count($options) === 0) {
        // This could also be WEP but wpa_supplicant doesn't have a way to determine
        // this.
        // And you shouldn't be using WEP these days anyway.
        return "Open";
    } else {
        return implode("<br />", $options);
    }
}

/**
 *
 *
 */
/*LOKINET FUNCTIONS ADDED HERE*/

function DisplayLokinetConfig()
{
    exec("pidof lokinet | wc -l", $lokinetstatus);
    if ($lokinetstatus[0] != 0) {
        $exitstatus = exec("lokinet-vpn --status");
    } else {
        $exitstatus = "no exits";
    }
    $rulestate = exec(
        "ip rule show default | grep lokinet | awk {'print $5'}",
        $output
    );
    $lokiversion = exec("dpkg -s lokinet | grep '^Version:'", $output);
    ?>
        <div class="row">
          <div class="col-lg-12">
            <div class="panel panel-primary">
              <div class="panel-heading"><i class="fa fa-eye-slash fa-fw"></i> Configure Lokinet</div>
        <!-- /.panel-heading -->
                <div class="panel-body">
        <!-- Nav tabs -->
                  <ul class="nav nav-tabs">
                <li class="active"><a href="#basic" data-toggle="tab">Exit Node Settings</a>
                </li>
                <li><a href="#Mobile" data-toggle="tab">Mobile APN</a>
                </li>
                <li><a href="#whois" data-toggle="tab">WHOIS</a>
                </li>

                </ul>
        <!-- Tab panes -->
	<div class="tab-content">
	        <p><?php echo $status; ?></p>
                <p><?php echo "Current Lokinet $lokiversion"; ?></p>
                <div class="tab-pane fade in active" id="basic">
                <form role="form" action="?page=save_hostapd_conf" method="POST">
	        <h5>Enter Exit Node Data to activate:</h5>
                <label for="exitaddress">Exit:</label>
		<input type="text" class="form-control" list="exitaddresses" placeholder="enter exit address here" id="exitaddress" name="exitaddress" onchange="OnSelectionChange()">
		<?php $api_url = 'https://my-json-server.typicode.com/necro-nemesis/exits-api/exits';
			// Read JSON file
			$json_data = file_get_contents($api_url);
			// Decode JSON data into PHP array
			$response_data = json_decode($json_data,true);
			?>
				<datalist id="exitaddresses">
				<?php foreach($response_data as $response){
					$listedexits = '<option value=\''.$response['exit'].'\'>';
					echo $listedexits;
					}
   				?>
				</datalist>

	<script>
		//JSON Authentication Token Handler
		async function OnSelectionChange(){
		var selection = document.getElementById("exitaddress").value;
		const endpoint = 'https://my-json-server.typicode.com/necro-nemesis/exits-api/db';
		const response = await fetch(endpoint);
		const data = await response.json();
			for (var i = 0; i < data['exits'].length; i++) {
		    		if (data['exits'][i]['exit'] == selection) {
				const { exit, auth, geo, rate } = data['exits'][i];
				console.log('Exit name : ' + exit);
				console.log('Exit token : '+ auth);
				console.log('Exit location : ' + geo);
				console.log('Exit rate : ' + rate);
				console.log('Dropdown selection : ' + selection);
				alert('EXIT NODE INFORMATION\r\rExit Address : ' + exit + '\rExit Location : ' + geo + '\rExit Autorization Key : ' + auth + '\rMonthly Rate : ' + rate);
				document.getElementById("auth").value = auth;
      			break;
			}
    		}
	}
	</script>


                <label for="exitkey">Exit Key: (optional)</label>
                <input type="text" class="form-control" id="auth" placeholder="optional exit authorization key" id="exitkey" name="exitkey">
		<br/>
		<input type="reset" class="btn btn-default" value="Clear">
                <?php
                if ($exitstatus != "no exits") {
                    echo '<input type="submit" class="btn btn-danger" name="StopExit" value="Stop Exit" />', PHP_EOL;
                } else {
                    echo '<input type="submit" class="btn btn-success" name="StartExit" value="Start Exit" />', PHP_EOL;
                }
                if ($lokinetstatus[0] == 0) {
                    echo '<input type="submit" class="btn btn-success" name="StartDaemon" value="Start Daemon" />', PHP_EOL;
                } else {
                    echo '<input type="submit" class="btn btn-danger" name="StopDaemon" value="Stop Daemon" />', PHP_EOL;
                }
                ?><h5><?php echo "Your development support is greatly appreciated <br>Independent LabyrinthAP developer TechnicalTumbleweed's OXEN wallet address:"; ?></h5>
    		<h5><pre><?php echo "LA8VDcoJgiv2bSiVqyaT6hJ67LXbnQGpf9Uk3zh9ikUKPJUWeYbgsd9gxQ5ptM2hQNSsCaRETQ3GM9FLDe7BGqcm4ve69bh"; ?></pre></h5>
	</div>

	<div class="tab-pane fade" id="Mobile">
              	<form role="form" action="?page=save_hostapd_conf" method="POST">
              	<h5>Enter mobile provider apn:</h5>
              	<label for="apn">Mobile Provider APN:</label>
              	<input type="text" class="form-control" placeholder="enter apn address here" id="apn" name="apn">
              	<br/>
              	<?php echo '<input type="submit" class="btn btn-success" name="apnaddress" value="Set APN" />',
		PHP_EOL; ?><h5><?php echo "Your development support is greatly appreciated <br>Independent LabyrinthAP developer TechnicalTumbleweed's OXEN wallet address:"; ?></h5>
  		<h5><pre><?php echo "LA8VDcoJgiv2bSiVqyaT6hJ67LXbnQGpf9Uk3zh9ikUKPJUWeYbgsd9gxQ5ptM2hQNSsCaRETQ3GM9FLDe7BGqcm4ve69bh"; ?></pre></h5>
	</div>

	<div class="tab-pane fade" id="whois">
                <form role="form" action="?page=save_hostapd_conf" method="POST">
	        <h5>Enter .loki Address:</h5>
                <label for="lokiaddress">Loki Address:</label>
                <input type="text" class="form-control" placeholder="enter lokinet address here" id="lokiaddress" name="lokiaddress">
                <br/>
                <?php echo '<input type="submit" class="btn btn-success" name="checkaddress" value="Submit" />',
		PHP_EOL; ?><h5><?php echo "Your development support is greatly appreciated <br>Independent LabyrinthAP developer TechnicalTumbleweed's OXEN wallet address:"; ?></h5>
                <h5><pre><?php echo "LA8VDcoJgiv2bSiVqyaT6hJ67LXbnQGpf9Uk3zh9ikUKPJUWeYbgsd9gxQ5ptM2hQNSsCaRETQ3GM9FLDe7BGqcm4ve69bh"; ?></pre></h5>
	</div></div>
	<?php
}

function ActivateLokinetConfig()
{
    /* Lokinet script commands start HERE
        ////
        //// LOKINET
        ////
        //*/

    //START
    if (isset($_POST["StartDaemon"])) {
        exec("sudo /var/lib/lokinet/lokilaunch.sh start");
        DisplayLokinetConfig();

        //STOP
    } elseif (isset($_POST["StopDaemon"])) {
        exec("sudo /var/lib/lokinet/lokilaunch.sh exitdown");
        exec("sudo /var/lib/lokinet/lokilaunch.sh stop");
        DisplayLokinetConfig();

        //START EXIT
    } elseif (isset($_POST["StartExit"])) {
        $exit = $_POST["exitaddress"];
        $token = $_POST["exitkey"];
        $exit = str_replace("'", "", $exit);
        $token = str_replace("'", "", $token);
        $output = shell_exec(
            "sudo /var/lib/lokinet/lokilaunch.sh exitup '" .
                $exit .
                "' '" .
                $token .
                "'"
        );
	$exitstatus = exec("lokinet-vpn --status");
	if ($exitstatus != "no exits") {
	?><div class="alert alert-info"><?php
	echo "Exit Enabled";
	?></div><?php
	} else {
	?><div class="alert alert-danger"><?php
	echo "WARNING EXIT DID NOT CONNECT";
	?></div><?php
	}
        echo "<pre><strong>$output</strong></pre>";
        ?><form method="post"><?php
	echo '<input type="submit" class="btn btn-success" name="Return" value="Return" />', PHP_EOL;
	echo "\n";
	?><form><br/><?php

        //STOP EXIT
    } elseif (isset($_POST["StopExit"])) {
        exec("sudo /var/lib/lokinet/lokilaunch.sh exitdown");
        DisplayLokinetConfig();

        //WHOIS
    } elseif (isset($_POST["checkaddress"])) {
        $address = $_POST["lokiaddress"];
        $output = shell_exec("sudo /var/lib/lokinet/lokilaunch.sh whois " . $address . "");
        echo "<pre><strong>$output</strong></pre>";
        ?><form method="post"><?php
	echo '<input type="submit" class="btn btn-success" name="Return" value="Return" />', PHP_EOL;
	echo "\n";
	?><form><br/><?php

        //Mobile
    } elseif (isset($_POST["apnaddress"])) {
        $apnvalue = $_POST["apn"];
        $file = "/var/lib/lokinet/mobile.sh";
        $input = file_get_contents($file);
        $parsed = get_string_between($input, "apn='", "',ip");
        $output = str_replace($parsed, $apnvalue, $input);
        file_put_contents($file, $output);
        echo "<pre><strong>Reboot required to start mobile. Reboot now?</strong></pre>";
        ?><form method="post"><?php
	echo '<input type="submit" class="btn btn-success" name="Return" value="Reboot Later" />', PHP_EOL;
	echo '<input type="submit" class="btn btn-success" name="Reboot" value="Activate Now" />', PHP_EOL;
	echo "\n";
	?><form><br/><?php
    	} elseif (isset($_POST["Return"])) {
        DisplayLokinetConfig();
    	} elseif (isset($_POST["Reboot"])) {
        shell_exec("sudo reboot now");
    	}
}