Provide openid-configuration and certificate as JWK to meet OpenID 1.0 specs

Dear Team,

I made some tweak in \modules\contrib\oauth2_server\src\Controller\OAuth2Controller
=> \modules\contrib\oauth2_server\src\Controller\OAuth2Controller openIdConfiguration
=> \modules\contrib\oauth2_server\src\Controller\accessNeedsKeys (call openIdConfiguration inside this)

Created below urls for openid configuration
=> well_known_uri: http://mysite.com/oauth2/certificates?openid-configuration
=> jwks_uri: http://mysite.com/oauth2/certificates?jwkUri

I added below code in this function -
/**
* Access needs Keys.
*/
public function accessNeedsKeys() {
$this->openIdConfiguration();
}

And this is my openIdConfiguration funtion -

private function openIdConfiguration() {
if (!empty($_GET)) {
$foundJwkUri = $foundOpenidConfiguration = false;
array_walk($_GET, function ($val, $var) use (&$foundJwkUri, &$foundOpenidConfiguration) {
if (strtolower($var) == 'jwkuri') {
$foundJwkUri = true;
}
if (strtolower($var) == 'openid-configuration') {
$foundOpenidConfiguration = true;
}
});
}
$response = [];
if ($foundOpenidConfiguration === true) {
global $base_url;
$issuer = 'https://' . $_SERVER['HTTP_HOST'];
$response = [
'issuer' => $issuer,
'authorization_endpoint' => $base_url . '/oauth2/authorize',
'token_endpoint' => $base_url . '/oauth2/token',
'userinfo_endpoint' => $base_url . '/oauth2/userInfo',
'jwks_uri' => $base_url . '/oauth2/certificates?jwkUri',
'response_types_supported' => ['code', 'id_token', 'token id_token', 'code id_token'],
'subject_types_supported' => ['public'],
'id_token_signing_alg_values_supported' => ['RS256'],
];
}
if ($foundJwkUri === true) {
$keys = Utility::getKeys();
if (!empty($keys['public_key'])) {
$public_key = openssl_pkey_get_public($keys['public_key']);
$public_key = openssl_pkey_get_details( $public_key );
$response = [
'keys' => [
[
'kty' => 'RSA',
'alg' => 'RS256',
'use' => 'sig',
'n' => base64_encode( $public_key['rsa']['n'] ),
'e' => base64_encode( $public_key['rsa']['e'] ),
],
],
];
}
}
if ($foundOpenidConfiguration === true || $foundJwkUri === true) {
echo json_encode($response, 1);die;
}
}

However, I know, This may be improved but, This works for me.