Calculates the distance between the given coordinate
and this coordinate.
|
public getDistance ( |
||
| $coordinate | ||
| $calculator | Location\Distance\DistanceInterface | instance of distance calculation class |
| return | float | |
function dist_($lat1, $lng1, $lat2, $lng2)
{
if ($this->is_lat($lat1) && $this->is_lng($lng1) && $this->is_lat($lat2) && $this->is_lng($lng2)) {
$c1 = new Coordinate($lat1, $lng1);
$c2 = new Coordinate($lat2, $lng2);
return $c1->getDistance($c2, new Haversine());
} else {
return PHP_INT_MAX;
}
}
/**
* @SWG\Get(
* path="/stun",
* summary="Request for stun/turn time limited long term credential",
* tags={"rest api"},
* produces={"application/json"},
* @SWG\Parameter(
* description="username fragement, any desired application data",
* in="query",
* name="ufrag",
* required=false,
* type="string",
* maximum=25
* ),
* @SWG\Parameter(
* description="realm, the domain of the shared secret, default=lab.vvc.niif.hu",
* in="query",
* name="realm",
* required=false,
* type="string",
* maximum=254,
* ),
* @SWG\Parameter(
* description="client browser IPv4/IPv6 Address",
* in="query",
* name="ip",
* required=false,
* type="string",
* maximum=45
* ),
* @SWG\Response(
* response="200",
* description="STUN time limited credentials",
* @SWG\Schema(
* ref="#/definitions/ApiResponse"
* )
* ),
* security={
* {
* "api_key":{ }
* }
* }
* )
*/
public function Get()
{
$app = \Slim\Slim::getInstance();
//default realm
$realm = "lab.vvc.niif.hu";
try {
define("MAXSERVERS", 2);
//connectdb
$db = Db::Connection("coturn-rest");
/// TOKEN IS A PARAM VARIABLE
$token = $app->request->params('api_key');
/// TOKEN IS A HEADER VARIABLE
//$app->request->headers('api_key')
//TODO validate token:
$sth = $db->prepare("SELECT count(*) AS count FROM token where token='{$token}'");
$sth->execute();
$result = $sth->fetchAll(PDO::FETCH_ASSOC);
if ($result[0]["count"] == 1) {
// response
$response = new ApiResponse();
$response->ttl = 86400;
// if ufrag
if (empty($app->request->params('ufrag'))) {
$response->username = time() + $response->ttl;
} else {
$response->username = time() + $response->ttl . ":" . $app->request->params('ufrag');
}
//update not existing lat long in server table
$sth = $db->prepare("SELECT id,ip FROM ip where latitude IS NULL OR longitude IS NULL");
$sth->execute();
$result = $sth->fetchAll(PDO::FETCH_ASSOC);
foreach ($result as $row => $columns) {
$location = $this->GetGeoIP($columns['ip']);
$sth2 = $db->prepare("UPDATE ip SET latitude={$location->latitude}, longitude={$location->longitude} WHERE id={$columns['id']}");
$sth2->execute();
}
$uris = array();
//check if ip presents
if ($app->request->params('ip') && ($location = $this->GetGeoIP($app->request->params('ip')))) {
//geoip distance
$client_coordinate = new Coordinate($location->latitude, $location->longitude);
$sth = $db->prepare("SELECT id,latitude,longitude FROM ip");
$sth->execute();
$result = $sth->fetchAll(PDO::FETCH_ASSOC);
foreach ($result as $row => $columns) {
$server_coordinate = new Coordinate($columns['latitude'], $columns['longitude']);
$ips[$columns['id']] = $client_coordinate->getDistance($server_coordinate, new Vincenty());
}
asort($ips);
$servers = array();
foreach ($ips as $id => $distance) {
$sth = $db->prepare("SELECT server_id FROM ip WHERE id='" . $id . "'");
$sth->execute();
$result = $sth->fetchAll(PDO::FETCH_ASSOC);
foreach ($result as $row => $columns) {
array_push($servers, $columns["server_id"]);
}
}
for ($i = 0; $i < MAXSERVERS; $i++) {
//add turnserver
$this->serverURIs($db, $servers[$i], $uris);
}
} else {
//default random servers
$sth = $db->prepare("SELECT id FROM server ORDER BY RAND() limit " . MAXSERVERS);
$sth->execute();
$result = $sth->fetchAll(PDO::FETCH_ASSOC);
foreach ($result as $row => $columns) {
//add a turnserver
$this->serverURIs($db, $columns["id"], $uris);
}
}
//implode uris
$response->uris = $uris;
//check if realm presents
if ($app->request->params('realm')) {
$realm = $app->request->params('realm');
}
$sth = $db->prepare("SELECT value FROM turn_secret where realm='{$realm}' ORDER BY timestamp DESC limit 1");
$sth->execute();
$sharedsecret = $sth->fetchColumn();
if ($sharedsecret) {
$response->password = base64_encode(hash_hmac("sha1", $response->username, $sharedsecret, true));
$app->response->setStatus(200);
$app->response()->headers->set('Content-Type', 'application/json');
echo json_encode($response);
$db = null;
} else {
throw new PDOException('No records found.');
}
} else {
$app->response->setStatus(403);
$app->response()->headers->set('Content-Type', 'application/json');
echo '{"error":{"text": "Invalid api_key" }}';
}
} catch (PDOException $e) {
$app->response()->setStatus(500);
$app->response()->headers->set('Content-Type', 'application/json');
echo '{"error":{"text": "' . $e->getMessage() . '"}}';
}
}
/**
* @covers Location\Coordinate::getDistance
*/
public function testGetdistance()
{
$coordinate1 = new Coordinate(19.820664, -155.468066, $this->ellipsoid);
$coordinate2 = new Coordinate(20.709722, -156.253333, $this->ellipsoid);
$this->assertEquals(128130.85, $coordinate1->getDistance($coordinate2, new Vincenty()));
}
