php实现paypal 授权登录

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PHP实现paypal 授权登录

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/**

@project   paypal login
@author   jiangjianhe 
@date   2015-04-03

*/

class paypallogin

{
//沙箱token链接

private $_sanbox_oauth2_auth_uri = 'https://www.sandbox.paypal.com/webapps/auth/protocol/openidconnect/v1/authorize';

private $_live_oauth2_auth_uri = 'https://www.paypal.com/webapps/auth/protocol/openidconnect/v1/authorize';
private $_acquire_user_profile_sandbox_url = 'https://www.sandbox.paypal.com/webapps/auth/protocol/openidconnect/v1/userinfo?schema=openid&access_token=';

private $_acquire_user_profile_live_url = 'https://www.paypal.com/webapps/auth/protocol/openidconnect/v1/userinfo?schema=openid&access_token=';
//沙箱token链接

private $_token_service_sandbox_url = 'https://www.sandbox.paypal.com/webapps/auth/protocol/openidconnect/v1/tokenservice';

private $_token_service_live_url = 'https://www.paypal.com/webapps/auth/protocol/openidconnect/v1/tokenservice';

private $_sanbox_flag = true;

private $_client_id = null;

private $_client_secret = null;

private $_redirect_uri = null;

private $_state = '';

private $_scope = 'openid email phone profile address https://uri.paypal.com/services/paypalattributes'; //scope 参数决定访问令牌的访问权限 各个参数详解url;:https://www.paypal-biz.com/product/login-with-paypal/index.html#configureButton
public $token = null;

public $protocol = "http";
/**

@name 构造函数
@param $flag 是否沙箱环境

*/

public function __construct($redirect_uri,$client_id,$client_secret,$scope,$state,$flag = truE)

{

$this->_sanBox_flag = $flag;

$this->_redirect_uri = $redirect_uri;

$this->_client_id = $client_id;

$this->_client_secret = $client_secret;

$this->_scope = $scope;

$this->_state = $state;

}

/**

创建paypal request url
@return String

*/

public function create_request_url()

{

$oauth2_auth_uri = $this->_sanBox_flag ? $this->_sanBox_oauth2_auth_uri :$this->_live_oauth2_auth_uri;

$url = $oauth2_auth_uri.'?'.

http_build_query(

array(

'client_id' => $this->_client_id,//通过应用程序注册流程获得的唯一客户端标识符。必需。

'response_type' =>'code',//表明授权代码被发送回应用程序返回URL。为了使访问令牌在用户代理中不可见， 建议使用code一值。如果您希望在响应中同时收到授权代码和 id_token ，请传递 code+id_token。另一个可能的 response_type 值是 token ——大部分由javascript和移动客户端等公共客户端使用。

'scope' => $this->_scope,//;implode(',',$this->scopE),'redirect_uri' => urlencode($this->_redirect_uri),//应用程序的返回URL。结构、主机名和端口必须与您在注册应用程序时设置的返回URL相符。

'nonce' => time().rand(),//不透明的随机标识符，可减少重放攻击风险。简单的函数是：(timestamp + Base64 encoding (random[16]))。

'state' => $this->_state,// CSRF验证码

)

);

return $url;

}

/**

get PayPal access token
@param String $code ?
@return String    access token

*/

public function acquire_access_token($code ) {

$accessToken = null;

try {
  $postvals = sprintf("client_id=<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">%s</a>&client_secret=<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">%s</a>&grant_type=authorization_code&code=<a href="http://code.js-code.com/tag/s/" target="_blank" class="keywords">%s</a>",$this->_client_id,$this->_client_secret,$codE);
  if($this->_san<a href="http://code.js-code.com/tag/Box/" target="_blank" class="keywords">Box</a>_flag)
    $ch = curl_init($this->_token_service_sand<a href="http://code.js-code.com/tag/Box/" target="_blank" class="keywords">Box</a>_url);
  else
    $ch = curl_init($this->_token_service_live_url); 

  $options = array(
    CURLOPT_POST      => 1,CURLOPT_VERBOSE    => 1,CURLOPT_POSTFIELDS   => $postvals,CURLOPT_RETURNTRANSFER => 1,CURLOPT_SSL_VERIFYPEER => falSE,//CURLOPT_SSLVERSION => 2
  );

  curl_setopt_array($ch,$options);
  $response = curl_exec($ch);
  $error = curl_error($ch);

  curl_close( $ch );

  if (!$response ) {
    throw new Exception( "Error retrieving access token: " . curl_error($ch));
  }
  $jsonResponse = json_decode($response );

  if ( isset( $jsonResponse->access_token) ) {
    $accessToken = $jsonResponse->access_token;
  }

} catch( Exception $E) {
  throw new Exception($e->getmessage(),1);
}

return $accessToken;
}
/**


get the PayPal user profile,decoded


@param String $accessToken


@return object

*/

public function acquire_paypal_user_profile($accessToken ) {

try {

if($this->_sanBox_flag)

$url = $this->_acquire_user_profile_sandBox_url . $accessToken;

else

$url = $this->_acquire_user_profile_live_url . $accessToken;  
$ch = curl_init( $url );

$options = array(

CURLOPT_RETURNTRANSFER => 1,//CURLOPT_SSLVERSION => 2

);

curl_setopt_array($ch,$options);
$response = curl_exec($ch);

$error = curl_error( $ch);

curl_close( $ch );
if (!$response )

{

return false;

}

return json_decode($responsE);

} catch( Exception $e ) {

return false;

}

}

}

?>

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