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<?php
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<?php
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// this script is executed by status page (controler.js) of each users
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// this script is executed by status page (controler.js) of each users
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// store user @IP who can join this page (still have their status.php tab open) in a file.
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// store user @IP who can join this page (still have their status.php tab open) in a file.
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$filename = '/tmp/current_users.txt';
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$filename = '/tmp/current_users.txt';
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$user_ip = $_SERVER['REMOTE_ADDR'];
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$user_ip = $_SERVER['REMOTE_ADDR'];
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if (!filter_var($user_ip, FILTER_VALIDATE_IP)){
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	echo "<b>invalide @IP</b><br />\n";
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	exit();
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}
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$isConnected = exec('sudo /usr/sbin/chilli_query list | awk '.escapeshellarg('($2 == "'.$user_ip.'") {print $5}'));
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$isConnected = exec('sudo /usr/sbin/chilli_query list | awk '.escapeshellarg('($2 == "'.$user_ip.'") {print $5}'));
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if ($isConnected === '0') {
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if ($isConnected === '0') {
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	exit();
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	exit();
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}
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}
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if ((!file_exists($filename)) || (filesize($filename) === 0)) {
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if ((!file_exists($filename)) || (filesize($filename) === 0)) {
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	// Creating file and write user @IP.
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	// Creating file and write user @IP.
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	file_put_contents($filename, $user_ip.':TEMP'.PHP_EOL);
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	file_put_contents($filename, $user_ip.':TEMP'.PHP_EOL);
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} else {
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} else {
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	// If we found duplicate user IP, it will not be writen again
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	// If we found duplicate user IP, it will not be writen again
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	$found = false;
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	$found = false;
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	$fh = fopen($filename, 'r');
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	$fh = fopen($filename, 'r');
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	while (!feof($fh)) {
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	while (!feof($fh)) {
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		$line = fgets($fh, 1024);
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		$line = fgets($fh, 1024);
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		if (preg_match('/^'.preg_quote($user_ip).':/', $line)) {
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		if (preg_match('/^'.preg_quote($user_ip).':/', $line)) {
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			$found = true;
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			$found = true;
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			break;
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			break;
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		}
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		}
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	}
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	}
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	fclose($fh);
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	fclose($fh);
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	// else we write user IP in the file
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	// else we write user IP in the file
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	if (!$found) {
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	if (!$found) {
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		file_put_contents($filename, $user_ip.':TEMP'.PHP_EOL, FILE_APPEND);
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		file_put_contents($filename, $user_ip.':TEMP'.PHP_EOL, FILE_APPEND);
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	}
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	}
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}
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}
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