function send_response($username, $authorize = false)
{
$GET = $_SESSION['get'];
$rpfA = $_SESSION['rpfA'];
$rpep = $GET['redirect_uri'];
$state = isset($GET['state']) ? $GET['state'] : NULL;
$error_page = isset($GET['redirect_uri']) ? $GET['redirect_uri'] : OP_INDEX_PAGE;
$response_mode = get_response_mode($GET);
try {
$client_id = $GET['client_id'];
$response_types = explode(' ', $GET['response_type']);
$scopes = explode(' ', $GET['scope']);
$prompts = explode(' ', $GET['prompt']);
$is_code_flow = in_array('code', $response_types);
$is_token_flow = in_array('token', $response_types);
$is_id_token = in_array('id_token', $response_types);
$offline_access = $is_code_flow && !$is_token_flow && in_array('consent', $prompts) && in_array('offline_access', $scopes);
$issue_at = strftime('%G-%m-%d %T');
$expiration_at = strftime('%G-%m-%d %T', time() + 2 * 60);
$response_params = array();
if (!$authorize) {
throw new OidcException('access_denied', 'User denied access');
}
$rpfA['session_id'] = session_id();
$rpfA['auth_time'] = $_SESSION['auth_time'];
$confirmed_attribute_list = get_all_requested_claims($rpfA, $GET['scope']);
if ($is_code_flow) {
$code_info = create_token_info($username, $confirmed_attribute_list, $GET, $rpfA);
$code = $code_info['name'];
unset($code_info['name']);
$fields = array('client' => $GET['client_id'], 'issued_at' => $issue_at, 'expiration_at' => $expiration_at, 'token' => $code, 'details' => '', 'token_type' => TOKEN_TYPE_AUTH_CODE, 'info' => json_encode($code_info));
db_save_user_token($username, $code, $fields);
}
if ($is_token_flow) {
$code_info = create_token_info($username, $confirmed_attribute_list, $GET, $rpfA);
$token = $code_info['name'];
unset($code_info['name']);
$issue_at = strftime('%G-%m-%d %T');
$expiration_at = strftime('%G-%m-%d %T', time() + 2 * 60);
$fields = array('client' => $GET['client_id'], 'issued_at' => $issue_at, 'expiration_at' => $expiration_at, 'token' => $token, 'details' => '', 'token_type' => TOKEN_TYPE_ACCESS, 'info' => json_encode($code_info));
db_save_user_token($username, $token, $fields);
}
if ($offline_access) {
while (true) {
$refresh_token_name = base64url_encode(mcrypt_create_iv(32, MCRYPT_DEV_URANDOM));
if (!db_find_token($refresh_token_name)) {
break;
}
}
$fields = array('client' => $GET['client_id'], 'issued_at' => $issue_at, 'expiration_at' => $expiration_at, 'token' => $refresh_token_name, 'details' => '', 'token_type' => TOKEN_TYPE_REFRESH, 'info' => json_encode($code_info));
$fields['expiration_at'] = strftime('%G-%m-%d %T', time() + 24 * 60 * 60);
db_save_user_token($username, $refresh_token_name, $fields);
}
// Handle response_type for code or token
if (isset($GET['state'])) {
$response_params['state'] = $GET['state'];
}
if ($is_token_flow || $is_id_token) {
if (isset($token)) {
$response_params['access_token'] = $token;
$response_params['token_type'] = 'Bearer';
if ($offline_access) {
$response_params['refresh_token'] = $refresh_token_name;
}
$response_params['expires_in'] = '3600';
}
}
if ($is_id_token) {
$client_secret = null;
$nonce = isset($GET['nonce']) ? $GET['nonce'] : null;
$c_hash = null;
$at_hash = null;
$ops = null;
$auth_time = null;
$acr = null;
$idt_claims = array();
$sig = null;
$alg = null;
$enc = null;
$client_secret = null;
$jwk_uri = null;
$db_client = db_get_client($client_id);
if ($db_client) {
$sig = $db_client['id_token_signed_response_alg'];
if (!isset($sig)) {
$sig = 'RS256';
}
$alg = $db_client['id_token_encrypted_response_alg'];
$enc = $db_client['id_token_encrypted_response_enc'];
$client_secret = $db_client['client_secret'];
$jwk_uri = $db_client['jwks_uri'];
$jwks = $db_client['jwks'];
}
if (isset($rpfA['claims']) && isset($rpfA['claims']['id_token'])) {
if (array_key_exists('auth_time', $rpfA['claims']['id_token'])) {
$auth_time = (int) $_SESSION['auth_time'];
}
if (array_key_exists('acr', $rpfA['claims']['id_token'])) {
if (array_key_exists('values', $rpfA['claims']['id_token']['acr'])) {
if (is_array($rpfA['claims']['id_token']['acr']['values']) && count($rpfA['claims']['id_token']['acr']['values'])) {
$acr = $rpfA['claims']['id_token']['acr']['values'][0];
}
} else {
$acr = '0';
}
}
}
if ($sig) {
$bit_length = substr($sig, 2);
switch ($bit_length) {
case '384':
$hash_alg = 'sha384';
break;
case '512':
$hash_alg = 'sha512';
break;
case '256':
default:
$hash_alg = 'sha256';
break;
}
$hash_length = (int) ((int) $bit_length / 2) / 8;
if ($code) {
$c_hash = base64url_encode(substr(hash($hash_alg, $code, true), 0, $hash_length));
}
if ($token) {
$at_hash = base64url_encode(substr(hash($hash_alg, $token, true), 0, $hash_length));
}
}
$requested_id_token_claims = get_id_token_claims($rpfA);
if ($requested_id_token_claims) {
$db_user = db_get_user($username);
if ($db_user) {
$idt_claims = get_account_claims($db_user, $requested_id_token_claims);
} else {
throw new OidcException('access_denied', 'no such user');
}
}
$id_token_obj = make_id_token(wrap_userid($db_client, $username), SERVER_ID, $client_id, $idt_claims, $nonce, $c_hash, $at_hash, $auth_time, $ops, $acr);
log_debug('sen_response id_token_obj = %s', print_r($id_token_obj, true));
$cryptoError = null;
$id_token = sign_encrypt($id_token_obj, $sig, $alg, $enc, $jwk_uri, $jwks, $client_secret, $cryptoError);
if (!$id_token) {
log_error("Unable to sign encrypt response for ID Token %s", $cryptoError);
throw new OidcException('invalid_request', "idtoken crypto error {$cryptoError}");
}
$response_params['id_token'] = $id_token;
}
$url_parts = parse_url($rpep);
$origin = sprintf("%s://%s%s", $url_parts['scheme'], $url_parts['host'], isset($url_parts['port']) ? ':' . $url_parts['port'] : '');
$salt = bin2hex(mcrypt_create_iv(16, MCRYPT_DEV_URANDOM));
log_debug("ss = sha256(%s%s%s%s).%s", $client_id, $origin, $_SESSION['ops'], $salt, $salt);
$session_state = hash('sha256', "{$client_id}{$origin}{$_SESSION['ops']}{$salt}") . '.' . $salt;
$response_params['session_state'] = $session_state;
if ($is_code_flow) {
$response_params['code'] = $code;
}
if ($_SESSION['persist'] == 'on') {
$username = $_SESSION['username'];
$auth_time = $_SESSION['auth_time'];
$ops = $_SESSION['ops'];
$login = $_SESSION['login'];
clean_session();
$_SESSION['lastlogin'] = time();
$_SESSION['username'] = $username;
$_SESSION['auth_time'] = $auth_time;
$_SESSION['ops'] = $ops;
$_SESSION['login'] = $login;
$_SESSION['persist'] = 'on';
} else {
session_destroy();
}
send_auth_response($rpep, $response_params, $response_mode);
} catch (OidcException $e) {
log_error("handle_auth exception : %s", $e->getTraceAsString());
send_error($error_page, $e->error_code, $e->desc, NULL, $state, $response_mode);
} catch (Exception $e) {
log_error("handle_auth exception : %s", $e->getTraceAsString());
send_error($error_page, 'invalid_request', $e->getMessage(), NULL, $state, $response_mode);
}
}
function db_save_token($token, $token_type, $user, $client, $issued, $expiration, $data = NULL, $details = NULL)
{
if (is_array($data)) {
}
unset($data['name']);
$token = array('token_type' => $token_type, 'client' => $client, 'issued_at' => $issued, 'expired_at' => $expiration, 'details' => $details, 'data' => json_encode($data));
db_save_user_token($user, $token, $token);
}
