Autenticação externa (Via CAS)

Luiz Jampolsky 06/02/2020 (há 4 anos)

Pessoal, to precisando de ajuda para fazer uma aplicação baseada no template, só que ao invés de ter a tela de login , seria redirecionado para uma aplicação externa que faz o login (quando autentico nesta aplicação externa , já me retorna o email da pessoa).
Estou baseando neste exemplo:

<?php
// https://calnetweb.berkeley.edu/calnet-technologists/cas/casifying-your-web-application-or-web-server/cas-code-samples/cas
$casService = 'https://servidor.com.br/cas-server';
$thisService = 'https://localhost' . $_SERVER['PHP_SELF'];
/*
* Check to see if there is a ticket in the GET request.
* CAS uses "ticket" for the service ticket. Bad choice of words, but
* it is what CAS uses.
*
* If the ticket exists, validate it with CAS. If not, redirect the user
* to CAS.
*
* Of course, you will want to hook this in with your application's
* session management system, i.e., if the user already has a session,
* you don't want to do either of these two things.
*
*/
if ($_SERVER["REQUEST_METHOD"] && $_GET["ticket"]) {
if ($response = responseForTicket($_GET["ticket"])) {
echo 'o email é '.$response;
}
else {
echo "26-The response was not valid.".'<br>';
}
}
else {
header("Location: $casService/login?service=$thisService");
}
//* Returns the CAS response if the ticket is valid, and false if not.
function responseForTicket($ticket) {
global $casService, $thisService;
$casGet = "$casService/serviceValidate?ticket=$ticket&service=" . urlencode($thisService);
$response = file_get_contents($casGet);
if (preg_match('/cas:authenticationSuccess/', $response)) {
return $response;
}
else {
return false;
}
}
?>

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