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mirror of https://github.com/billz/raspap-webgui.git synced 2023-10-10 13:37:24 +02:00
raspap-webgui/includes/functions.php

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<?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) {
$res = array();
foreach($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($fp);
return true;
} else {
return false;
}
}
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/**
*
* Add CSRF Token to form
*
*/
function CSRFToken() {
?>
<input id="csrf_token" type="hidden" name="csrf_token" value="<?php echo htmlspecialchars($_SESSION['csrf_token'], ENT_QUOTES);; ?>" />
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<?php
}
/**
*
* Validate CSRF Token
*
*/
function CSRFValidate() {
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if ( hash_equals($_POST['csrf_token'], $_SESSION['csrf_token']) ) {
return true;
} else {
error_log('CSRF violation');
return false;
}
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}
/**
* Test whether array is associative
*/
function isAssoc($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, $selected = null) {
echo '<select class="form-control" name="'.htmlspecialchars($name, ENT_QUOTES).'">' , 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;
}
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/**
*
* @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 = array();
foreach( $arrConfig as $line ) {
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$line = trim($line);
if( $line != "" && $line[0] != "#" ) {
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$arrLine = explode( "=",$line );
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$config[$arrLine[0]] = ( count($arrLine) > 1 ? $arrLine[1] : true );
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}
}
return $config;
}
/**
*
* @param string $freq
* @return $channel
*/
function ConvertToChannel( $freq ) {
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if ($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';
}
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}
/**
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* Converts WPA security string to readable format
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* @param string $security
* @return string
*/
function ConvertToSecurity( $security ) {
$options = array();
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[] = $protocol . ' ('. $matchArr[2] .')';
} else {
$options[] = $protocol;
}
}
}
if (count($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);
}
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}
/**
*
*
*/
function DisplayOpenVPNConfig() {
exec( 'cat '. RASPI_OPENVPN_CLIENT_CONFIG, $returnClient );
exec( 'cat '. RASPI_OPENVPN_SERVER_CONFIG, $returnServer );
exec( 'pidof openvpn | wc -l', $openvpnstatus);
if( $openvpnstatus[0] == 0 ) {
$status = '<div class="alert alert-warning alert-dismissable">OpenVPN is not running
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button></div>';
} else {
$status = '<div class="alert alert-success alert-dismissable">OpenVPN is running
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button></div>';
}
// parse client settings
foreach( $returnClient as $a ) {
if( $a[0] != "#" ) {
$arrLine = explode( " ",$a) ;
$arrClientConfig[$arrLine[0]]=$arrLine[1];
}
}
// parse server settings
foreach( $returnServer as $a ) {
if( $a[0] != "#" ) {
$arrLine = explode( " ",$a) ;
$arrServerConfig[$arrLine[0]]=$arrLine[1];
}
}
?>
<div class="row">
<div class="col-lg-12">
<div class="panel panel-primary">
<div class="panel-heading"><i class="fa fa-lock fa-fw"></i> Configure OpenVPN </div>
<!-- /.panel-heading -->
<div class="panel-body">
<!-- Nav tabs -->
<ul class="nav nav-tabs">
<li class="active"><a href="#openvpnclient" data-toggle="tab">Client settings</a></li>
<li><a href="#openvpnserver" data-toggle="tab">Server settings</a></li>
</ul>
<!-- Tab panes -->
<div class="tab-content">
<p><?php echo $status; ?></p>
<div class="tab-pane fade in active" id="openvpnclient">
<h4>Client settings</h4>
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<form role="form" action="?page=save_hostapd_conf" method="POST">
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<div class="row">
<div class="form-group col-md-4">
<label>Select OpenVPN configuration file (.ovpn)</label>
<input type="file" name="openvpn-config">
</div>
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</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">Client Log</label>
<input type="text" class="form-control" id="disabledInput" name="log-append" type="text" placeholder="<?php echo htmlspecialchars($arrClientConfig['log-append'], ENT_QUOTES); ?>" disabled="disabled" />
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</div>
</div>
</div>
<div class="tab-pane fade" id="openvpnserver">
<h4>Server settings</h4>
<div class="row">
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<div class="form-group col-md-4">
<label for="code">Port</label>
<input type="text" class="form-control" name="openvpn_port" value="<?php echo htmlspecialchars($arrServerConfig['port'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">Protocol</label>
<input type="text" class="form-control" name="openvpn_proto" value="<?php echo htmlspecialchars($arrServerConfig['proto'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">Root CA certificate</label>
<input type="text" class="form-control" name="openvpn_rootca" placeholder="<?php echo htmlspecialchars($arrServerConfig['ca'], ENT_QUOTES); ?>" disabled="disabled" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">Server certificate</label>
<input type="text" class="form-control" name="openvpn_cert" placeholder="<?php echo htmlspecialchars($arrServerConfig['cert'], ENT_QUOTES); ?>" disabled="disabled" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">Diffie Hellman parameters</label>
<input type="text" class="form-control" name="openvpn_dh" placeholder="<?php echo htmlspecialchars($arrServerConfig['dh'], ENT_QUOTES); ?>" disabled="disabled" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">KeepAlive</label>
<input type="text" class="form-control" name="openvpn_keepalive" value="<?php echo htmlspecialchars($arrServerConfig['keepalive'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">Server log</label>
<input type="text" class="form-control" name="openvpn_status" placeholder="<?php echo htmlspecialchars($arrServerConfig['status'], ENT_QUOTES); ?>" disabled="disabled" />
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</div>
</div>
</div>
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<input type="submit" class="btn btn-outline btn-primary" name="SaveOpenVPNSettings" value="Save settings" />
<?php
if($hostapdstatus[0] == 0) {
echo '<input type="submit" class="btn btn-success" name="StartOpenVPN" value="Start OpenVPN" />' , PHP_EOL;
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} else {
echo '<input type="submit" class="btn btn-warning" name="StopOpenVPN" value="Stop OpenVPN" />' , PHP_EOL;
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}
?>
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</form>
</div><!-- /.panel-body -->
</div><!-- /.panel-primary -->
<div class="panel-footer"> Information provided by openvpn</div>
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</div><!-- /.col-lg-12 -->
</div><!-- /.row -->
<?php
}
/**
*
*
*/
function DisplayTorProxyConfig(){
exec( 'cat '. RASPI_TORPROXY_CONFIG, $return );
exec( 'pidof tor | wc -l', $torproxystatus);
if( $torproxystatus[0] == 0 ) {
$status = '<div class="alert alert-warning alert-dismissable">TOR is not running
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button></div>';
} else {
$status = '<div class="alert alert-success alert-dismissable">TOR is running
<button type="button" class="close" data-dismiss="alert" aria-hidden="true">×</button></div>';
}
$arrConfig = array();
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foreach( $return as $a ) {
if( $a[0] != "#" ) {
$arrLine = explode( " ",$a) ;
$arrConfig[$arrLine[0]]=$arrLine[1];
}
}
?>
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<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 TOR proxy</div>
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<!-- /.panel-heading -->
<div class="panel-body">
<!-- Nav tabs -->
<ul class="nav nav-tabs">
<li class="active"><a href="#basic" data-toggle="tab">Basic</a>
</li>
<li><a href="#relay" data-toggle="tab">Relay</a>
</li>
</ul>
<!-- Tab panes -->
<div class="tab-content">
<p><?php echo $status; ?></p>
<div class="tab-pane fade in active" id="basic">
<h4>Basic settings</h4>
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<form role="form" action="?page=save_hostapd_conf" method="POST">
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<div class="row">
<div class="form-group col-md-4">
<label for="code">VirtualAddrNetwork</label>
<input type="text" class="form-control" name="virtualaddrnetwork" value="<?php echo htmlspecialchars($arrConfig['VirtualAddrNetwork'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">AutomapHostsSuffixes</label>
<input type="text" class="form-control" name="automaphostssuffixes" value="<?php echo htmlspecialchars($arrConfig['AutomapHostsSuffixes'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">AutomapHostsOnResolve</label>
<input type="text" class="form-control" name="automaphostsonresolve" value="<?php echo htmlspecialchars($arrConfig['AutomapHostsOnResolve'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">TransListenAddress</label>
<input type="text" class="form-control" name="translistenaddress" value="<?php echo htmlspecialchars($arrConfig['TransListenAddress'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">DNSPort</label>
<input type="text" class="form-control" name="dnsport" value="<?php echo htmlspecialchars($arrConfig['DNSPort'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">DNSListenAddress</label>
<input type="text" class="form-control" name="dnslistenaddress" value="<?php echo htmlspecialchars($arrConfig['DNSListenAddress'], ENT_QUOTES); ?>" />
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</div>
</div>
</div>
<div class="tab-pane fade" id="relay">
<h4>Relay settings</h4>
<div class="row">
<div class="form-group col-md-4">
<label for="code">ORPort</label>
<input type="text" class="form-control" name="orport" value="<?php echo htmlspecialchars($arrConfig['ORPort'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">ORListenAddress</label>
<input type="text" class="form-control" name="orlistenaddress" value="<?php echo htmlspecialchars($arrConfig['ORListenAddress'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">Nickname</label>
<input type="text" class="form-control" name="nickname" value="<?php echo htmlspecialchars($arrConfig['Nickname'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">Address</label>
<input type="text" class="form-control" name="address" value="<?php echo htmlspecialchars($arrConfig['Address'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">RelayBandwidthRate</label>
<input type="text" class="form-control" name="relaybandwidthrate" value="<?php echo htmlspecialchars($arrConfig['RelayBandwidthRate'], ENT_QUOTES); ?>" />
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</div>
</div>
<div class="row">
<div class="form-group col-md-4">
<label for="code">RelayBandwidthBurst</label>
<input type="text" class="form-control" name="relaybandwidthburst" value="<?php echo htmlspecialchars($arrConfig['RelayBandwidthBurst'], ENT_QUOTES); ?>" />
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</div>
</div>
</div>
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<input type="submit" class="btn btn-outline btn-primary" name="SaveTORProxySettings" value="Save settings" />
<?php
if( $torproxystatus[0] == 0 ) {
echo '<input type="submit" class="btn btn-success" name="StartTOR" value="Start TOR" />' , PHP_EOL;
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} else {
echo '<input type="submit" class="btn btn-warning" name="StopTOR" value="Stop TOR" />' , PHP_EOL;
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};
?>
</form>
</div><!-- /.tab-content -->
</div><!-- /.panel-body -->
<div class="panel-footer"> Information provided by tor</div>
</div><!-- /.panel-primary -->
</div><!-- /.col-lg-12 -->
</div><!-- /.row -->
<?php
}
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/**
*
*
*/
function SaveTORAndVPNConfig(){
if( isset($_POST['SaveOpenVPNSettings']) ) {
// TODO
} elseif( isset($_POST['SaveTORProxySettings']) ) {
// TODO
} elseif( isset($_POST['StartOpenVPN']) ) {
echo "Attempting to start openvpn";
exec( 'sudo /etc/init.d/openvpn start', $return );
foreach( $return as $line ) {
echo htmlspecialchars($line, ENT_QUOTES).'<br />' , PHP_EOL;
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}
} elseif( isset($_POST['StopOpenVPN']) ) {
echo "Attempting to stop openvpn";
exec( 'sudo /etc/init.d/openvpn stop', $return );
foreach( $return as $line ) {
echo htmlspecialchars($line, ENT_QUOTES).'<br />' , PHP_EOL;
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}
} elseif( isset($_POST['StartTOR']) ) {
echo "Attempting to start TOR";
exec( 'sudo /etc/init.d/tor start', $return );
foreach( $return as $line ) {
echo htmlspecialchars($line, ENT_QUOTES).'<br />' , PHP_EOL;
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}
} elseif( isset($_POST['StopTOR']) ) {
echo "Attempting to stop TOR";
exec( 'sudo /etc/init.d/tor stop', $return );
foreach( $return as $line ) {
echo htmlspecialchars($line, ENT_QUOTES).'<br />' , PHP_EOL;
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}
}
}