find($db, @$_SESSION["username"]);
return $user;
} catch (Exception $e) {
if ($show_error) {
echo "User not found";
echo 'Logout';
exit;
}
}
}
function connect_db() {
try {
$config = new Config();
$path = $config->DBPATH;
$username = $config->DBUSERNAME;
$password = $config->DBPASSWORD;
$db = new Database($path);
$db->connect($username, $password);
$db->create_tables();
return $db;
} catch (Exception $e) {
echo "Error with database
";
echo 'Report an issue';
exit;
}
}
function eduserver_login($username, $password) {
$login_url = "https://eduserver.nitc.ac.in/login/index.php";
$valid_login_flag = "userpicture";
$page_data = send_get($login_url);
$login_token = get_data_between($page_data, 'name="logintoken" value="', '"');
$login_data = send_post($login_url, [
"logintoken" => $login_token,
"username" => $username,
"password" => $password
]);
unlink("/tmp/_cookies.txt");
if (strpos($login_data, $valid_login_flag) !== false) {
return true;
}
return false;
}
function get_data_between($data, $start_flag, $end_flag) {
$start_pos = strpos($data, $start_flag);
if ($start_pos === false) {
return false;
}
$start_pos += strlen($start_flag);
$end_pos = strpos($data, $end_flag, $start_pos);
return substr($data, $start_pos, $end_pos - $start_pos);
}
function get_all_between($data, $start_flag, $end_flag) {
$matches = [];
$offset = 0;
while (strpos($data, $end_flag, $offset)) {
$matches[] = get_data_between(substr($data, $offset), $start_flag, $end_flag);
$offset += strpos($data, $end_flag, $offset);
}
return $matches;
}
function send_get($url, $data = array(), $cookie_prefix = "") {
$data_part = (!empty($data)) ? "?" . http_build_query($data) : "";
$url .= (substr($url, -1) === "/") ? "" : "/";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url . $data_part);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 3);
curl_setopt($ch, CURLOPT_HEADER, 1);
curl_setopt($ch, CURLOPT_COOKIEFILE, "/tmp/{$cookie_prefix}_cookies.txt");
curl_setopt($ch, CURLOPT_COOKIEJAR, "/tmp/{$cookie_prefix}_cookies.txt");
$server_output = curl_exec($ch);
curl_close($ch);
return $server_output;
}
function send_post($url, $data = array(), $cookie_prefix = "", $raw_data = null) {
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_COOKIEFILE, "/tmp/{$cookie_prefix}_cookies.txt");
curl_setopt($ch, CURLOPT_COOKIEJAR, "/tmp/{$cookie_prefix}_cookies.txt");
curl_setopt($ch, CURLOPT_POST, 1);
if (is_null($raw_data)) {
curl_setopt($ch, CURLOPT_POSTFIELDS, http_build_query($data));
} else {
curl_setopt($ch, CURLOPT_POSTFIELDS, $raw_data);
}
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_HEADER, 1);
$server_output = curl_exec($ch);
curl_close($ch);
return $server_output;
}