No handler in dropbox sdk? - php

Question

I'm trying to get an example from the dropbox sdk to work.
Here is some of the code that is in index.php in the root.
$req = $_SERVER['SCRIPT_NAME'];
if ($req === "/") {
//a bunch of code and elseif:s
}else{
echo renderHtmlPage("Bad URL", "No handler for $req");
exit;
}
I get the following output:
Bad URL
No handler for /index.php
How come req is set to index and how could it be set to / for example?
Full code
$dbxClient = getClient();
if ($dbxClient === false) {
header("Location: /dropbox-auth-start");
exit;
}
$path = "/";
if (isset($_GET['path'])) $path = $_GET['path'];
if (isset($_GET['dl'])) {
passFileToBrowser($dbxClient, $path);
}
else {
$entry = $dbxClient->getMetadataWithChildren($path);
if ($entry['is_dir']) {
echo renderFolder($entry);
}
else {
echo renderFile($entry);
}
}
}
else if ($req === "/dropbox-auth-start") {
$authorizeUrl = getWebAuth()->start();
header("Location: $authorizeUrl");
}
else if ($req === "/dropbox-auth-finish") {
try {
list($accessToken, $userId, $urlState) = getWebAuth()->finish($_GET);
assert($urlState === null);
unset($_SESSION['dropbox-auth-csrf-token']);
}
catch (dbx\WebAuthException_BadRequest $ex) {
error_log("/dropbox-auth-finish: bad request: " . $ex->getMessage());
// Respond with an HTTP 400 and display error page...
exit;
}
catch (dbx\WebAuthException_BadState $ex) {
// Auth session expired. Restart the auth process.
header('Location: /dropbox-auth-start');
exit;
}
catch (dbx\WebAuthException_Csrf $ex) {
error_log("/dropbox-auth-finish: CSRF mismatch: " . $ex->getMessage());
// Respond with HTTP 403 and display error page...
exit;
}
catch (dbx\WebAuthException_NotApproved $ex) {
echo renderHtmlPage("Not Authorized?", "Why not, bro?");
exit;
}
catch (dbx\WebAuthException_Provider $ex) {
error_log("/dropbox-auth-finish: unknown error: " . $ex->getMessage());
exit;
}
catch (dbx\Exception $ex) {
error_log("/dropbox-auth-finish: error communicating with Dropbox API: " . $ex->getMessage());
exit;
}
// NOTE: A real web app would store the access token in a database.
$_SESSION['access-token'] = $accessToken;
echo renderHtmlPage("Authorized!", "Auth complete, <a href='/'>click here</a> to browse");
}
else if ($req === "/unlink") {
// "Forget" the access token.
unset($_SESSION['access-token']);
header("Location: /");
}
else if ($req === "/upload") {
if (empty($_FILES['file']['name'])) {
echo renderHtmlPage("Error", "Please choose a file to upload");
exit;
}
if (!empty($_FILES['file']['error'])) {
echo renderHtmlPage("Error", "Error ".$_FILES['file']['error']." uploading file. See <a href='http://php.net/manual/en/features.file-upload.errors.php'>the docs</a> for details");
exit;
}
$dbxClient = getClient();
$remoteDir = "/";
if (isset($_POST['folder'])) $remoteDir = $_POST['folder'];
$remotePath = rtrim($remoteDir, "/")."/".$_FILES['file']['name'];
$fp = fopen($_FILES['file']['tmp_name'], "rb");
$result = $dbxClient->uploadFile($remotePath, dbx\WriteMode::add(), $fp);
fclose($fp);
$str = print_r($result, TRUE);
echo renderHtmlPage("Uploading File", "Result: <pre>$str</pre>");
}