<?php

/**

 * @author zhaozhuobin

 * @date:2016-06=07

 *

 */

namespace common\components;use DOMDocument;

use WXBizMsgCrypt;

use yii\base\Action;

use Yii;

/**

 *  获取微信 component_verify_ticket

 *

 * <xml>

 *   <AppId> AppId</AppId>

 *   <CreateTime> 1413192605 </CreateTime>

 *   <InfoType> component_verify_ticket </InfoType>

 *   <ComponentVerifyTicket> 内容 </ComponentVerifyTicket>

 * </xml>

 *

 * Class WechatAction

 * @package common\components

 */

class WechatAction extends  Action

{

    public $openWechat;

    /**

     * @return string|void

     */

    public function run()

    {

        $this->openWechat = Yii::$app->openWechat;

        $param = $this->getParam();

        $encryptMsg = file_get_contents('php://input');$result = $this->getVerify_Ticket($param['timestamp'],$param['nonce'],$param['msg_signature'],$encryptMsg);

        if($result){

            return "success";

        }

    }

    /**

     * 获取参数

     * @return array|mixed

     */

    public function getParam()

    {

        $param = Yii::$app->request->get();

        $param['timestamp'] = empty($param['timestamp']) ? "" : trim($param['timestamp']);

        $param['nonce'] = empty($param['nonce']) ? "" : trim($param['nonce']);

        $param['msg_signature'] = empty($param['msg_signature']) ? "" : trim($param['msg_signature']);

        $param['signature'] = empty($param['signature']) ? "" : trim($param['signature']);

        return $param;

    }

    /**

     * 获取 component_verify_ticket

     * @param $timeStamp

     * @param $nonce

     * @param $msg_sign

     * @param $encryptMsg

     * @return bool

     */

    public function getVerify_Ticket($timeStamp, $nonce, $msg_sign, $encryptMsg)

    {

        @include_once (dirname(__DIR__).'/messageCrypt/wxBizMsgCrypt.php');

        $pc = new WXBizMsgCrypt($this->openWechat->token, $this->openWechat->encodingAesKey, $this->openWechat->appId);

        $xml_tree = new DOMDocument();

        $xml_tree->loadXML($encryptMsg);

        $array_e = $xml_tree->getElementsByTagName('Encrypt');

        $encrypt = $array_e->item(0)->nodeValue;

        $format = "<xml><ToUserName><![CDATA[toUser]]></ToUserName><Encrypt><![CDATA[%s]]></Encrypt></xml>";

        $from_xml = sprintf($format, $encrypt);

        $msg = '';

        $errCode = $pc->decryptMsg($msg_sign, $timeStamp, $nonce, $from_xml, $msg);

        if ($errCode == 0) {

            $xml = new DOMDocument();

            $xml->loadXML($msg);

            $array_e = $xml->getElementsByTagName('ComponentVerifyTicket');

            $component_verify_ticket = $array_e->item(0)->nodeValue;

            //=======这里把 component_verify_ticket 保存到数据库========//

            return true;

        }else{

            //=======这里记录错误码========//

            return false;

        }

    }

}