gimbauth.php

<?php
$data = json_decode(file_get_contents("php://input"), true);

if (strpos($data["username"], "@") !== false) {
    $data["username"] = explode("@", $data["username"])[0];
}

$opts = array("http" =>
    array(
        "method"  => "POST",
        "content" => "username=" . urlencode($data["username"]) . "&password=" . urlencode($data["password"]),
    ),
    "ssl"=>array(
        "verify_peer"=>false,
        "verify_peer_name"=>false,
    )                
);
                
$context  = stream_context_create($opts);
$result = false;
$result = @file_get_contents("https://ucilnice.gimb.org/login/token.php?service=moodle_mobile_app", false, $context);
// exit($result);

$result = json_decode($result, true);

if (array_key_exists("error", $result)) {
    //fail
    http_response_code(401);
    //error_log(print_r($result, true));
    $user_response = array(
        "success" => false,
        "errorcode" => $result["errorcode"],
    );
    header("Content-Type: application/json");
    echo json_encode($user_response);
    die();
}

// success
$user_response = array(
    "success" => true,
);
header("Content-Type: application/json");
echo json_encode($user_response);
die();


?>