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signaturepdf/vendor/fatfree/web/oauth2.php

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2021-05-03 19:26:47 +02:00
<?php
/*
Copyright (c) 2009-2019 F3::Factory/Bong Cosca, All rights reserved.
This file is part of the Fat-Free Framework (http://fatfreeframework.com).
This is free software: you can redistribute it and/or modify it under the
terms of the GNU General Public License as published by the Free Software
Foundation, either version 3 of the License, or later.
Fat-Free Framework is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
General Public License for more details.
You should have received a copy of the GNU General Public License along
with Fat-Free Framework. If not, see <http://www.gnu.org/licenses/>.
*/
namespace Web;
//! Lightweight OAuth2 client
class OAuth2 extends \Magic {
protected
//! Scopes and claims
$args=[],
//! Encoding
$enc_type = PHP_QUERY_RFC1738;
/**
* Return OAuth2 authentication URI
* @return string
* @param $endpoint string
* @param $query bool
**/
function uri($endpoint,$query=TRUE) {
return $endpoint.($query?('?'.
http_build_query($this->args,null,'&',$this->enc_type)):'');
}
/**
* Send request to API/token endpoint
* @return string|array|FALSE
* @param $uri string
* @param $method string
* @param $token string
**/
function request($uri,$method,$token=NULL) {
$web=\Web::instance();
$options=[
'method'=>$method,
'content'=>http_build_query($this->args,null,'&',$this->enc_type),
'header'=>['Accept: application/json']
];
if ($token)
array_push($options['header'],'Authorization: Bearer '.$token);
elseif ($method=='POST' && isset($this->args['client_id']))
array_push($options['header'],'Authorization: Basic '.
base64_encode(
$this->args['client_id'].':'.
$this->args['client_secret']
)
);
$response=$web->request($uri,$options);
if ($response['error'])
user_error($response['error'],E_USER_ERROR);
if (isset($response['body'])) {
if (preg_grep('/^Content-Type:.*application\/json/i',
$response['headers'])) {
$token=json_decode($response['body'],TRUE);
if (isset($token['error_description']))
user_error($token['error_description'],E_USER_ERROR);
if (isset($token['error']))
user_error($token['error'],E_USER_ERROR);
return $token;
}
else
return $response['body'];
}
return FALSE;
}
/**
* Parse JSON Web token
* @return array
* @param $token string
**/
function jwt($token) {
return json_decode(
base64_decode(
str_replace(['-','_'],['+','/'],explode('.',$token)[1])
),
TRUE
);
}
/**
* change default url encoding type, i.E. PHP_QUERY_RFC3986
* @param $type
*/
function setEncoding($type) {
$this->enc_type = $type;
}
/**
* URL-safe base64 encoding
* @return array
* @param $data string
**/
function b64url($data) {
return trim(strtr(base64_encode($data),'+/','-_'),'=');
}
/**
* Return TRUE if scope/claim exists
* @return bool
* @param $key string
**/
function exists($key) {
return isset($this->args[$key]);
}
/**
* Bind value to scope/claim
* @return string
* @param $key string
* @param $val string
**/
function set($key,$val) {
return $this->args[$key]=$val;
}
/**
* Return value of scope/claim
* @return mixed
* @param $key string
**/
function &get($key) {
if (isset($this->args[$key]))
$val=&$this->args[$key];
else
$val=NULL;
return $val;
}
/**
* Remove scope/claim
* @return NULL
* @param $key string
**/
function clear($key=NULL) {
if ($key)
unset($this->args[$key]);
else
$this->args=[];
}
}