微信第三方应用平台授权公众号/小程序

摘要：微信授权第三方应用平台微信第三方应用平台微信第三方应用平台微信第三方应用平台消息检验微信第三方应用平台消息加解密微信公众号小程序授权给第三方应用平台授权后的回调地址值授权类型，公众号，小程序授权链接接收微信消息自身推送事件，

component_appid     = $component_appid;
        $this->component_secret = $component_secret;
        $this->component_token     = $component_token;
        $this->component_key     = $component_key;
    }

    /*
    *微信公众号/小程序授权给第三方应用平台
    *@params string $redirect_url : 授权后的回调地址
    *@params string $ticket : component_verify_ticket值
    *@params int $auth_type : 授权类型，1公众号，2小程序
    *return string $auth_url : 授权链接
     */
    public function start_authorization($redirect_uri,$ticket,$auth_type)
    {
        $component_access_token = $this->get_component_access_token($ticket);
        $pre_auth_code = $this->get_pre_auth_code($component_access_token);
        return "https://mp.weixin.qq.com/cgi-bin/componentloginpage?component_appid=".$this->component_appid."&pre_auth_code=".$pre_auth_code."&redirect_uri=".urlencode($redirect_uri)."&auth_type=".$auth_type;
    }
    /*
    *接收微信消息自身推送事件，如：公众号/小程序取消授权，ticket值等
    *解密ticket值/AuthorizerAppid
    *对应的URL链接在微信应用第三方平台中填写的“授权事件接收URL”
     */
    public function receiveMsg()
    {
        require_once("crypt/wxBizMsgCrypt.php");
        $encryptMsg = isset($GLOBALS["HTTP_RAW_POST_DATA"]) ? $GLOBALS["HTTP_RAW_POST_DATA"] : file_get_contents("php://input");
        $xml_tree = new DOMDocument();
        $xml_tree->loadXML($encryptMsg);
        $xml_array = $xml_tree->getElementsByTagName("Encrypt");
        $encrypt = $xml_array->item(0)->nodeValue;
        $Prpcrypt = new Prpcrypt($this->component_key);
        $postData = $Prpcrypt->decrypt($encrypt, $this->component_appid);
        if($postData[0] != 0){
            return $postData[0];
        } else {
            $xml = new DOMDocument();
            $xml->loadXML($postData[1]);
            $array_a = $xml->getElementsByTagName("InfoType");
            $infoType = $array_a->item(0)->nodeValue;
            //取消授权
            if($infoType == "unauthorized") {
                $array_b = $xml->getElementsByTagName("AuthorizerAppid");
                $AuthorizerAppid = $array_b->item(0)->nodeValue;
            }
            //ticket值
            elseif($infoType == "component_verify_ticket") {
                $array_e = $xml->getElementsByTagName("ComponentVerifyTicket");
                $component_verify_ticket = $array_e->item(0)->nodeValue;
            }
        }
    }
    /*
    *获取微信第三方应用平台componet_access_token
    *@params string $component_ticket : 第三方应用平台ticket值（每10分钟微信后台将推送该值）
    *return string $compoent_access_token : 第三方应用平台access_token
     */
    private function get_component_access_token($component_verify_ticket)
    {

        $json = json_decode(file_get_contents("component_access_token.json"));
        if(isset($json->component_access_token) && !empty($json->component_access_token) && ($json->expires_in < time()) ){
            return $json->component_access_token;
        } else {
            $url = "https://api.weixin.qq.com/cgi-bin/component/api_component_token";
            $data = "{"component_appid":"".$this->component_appid."","component_appsecret":"".$this->component_secret."","component_verify_ticket":"".$component_verify_ticket.""}";
            $ret = json_decode($this->https_post($url,$data));
            if(isset($ret->component_access_token)) {
                $json = "{"component_access_token":"".$ret->component_access_token."","expires_in":"".(time() + $ret->expires_in).""}";
                file_put_contents("component_access_token.json",$json);
                return $ret->component_access_token;
            } else {
                return null;
            }
        }
    }
    /*
    *获取预授权码pre_auth_code
    *@params string $component_access_token : 第三方应用平台access_token
    *return json $ret : 返回pre_auth_code、expires_in
     */
    private function get_pre_auth_code($component_access_token)
    {
        $json = json_decode(file_get_contents("pre_auth_code.json"));
        if(isset($json->pre_auth_code) && !empty($json->pre_auth_code) && ($json->expires_in < time()) ){
            return $json->pre_auth_code;
        } else {
            $url = "https://api.weixin.qq.com/cgi-bin/component/api_create_preauthcode?component_access_token=".$component_access_token;
            $data = "{"component_appid":"".$this->component_appid.""}";
            $ret = json_decode($this->https_post($url,$data));
            if(isset($ret->pre_auth_code)) {
                $json = "{"pre_auth_code":"".$ret->pre_auth_code."","expires_in":"".(time() + $ret->expires_in).""}";
                file_put_contents("pre_auth_code.json",$json);
                return $ret->pre_auth_code;
            } else {
                return null;
            }
        }
    }

    /*
    *发送https_post请求
    *@params string $url : URL链接
    *@params json $data : 发送JSON数据
    *return json $ret : 返回请求的结果
     */
    private function https_post($url,$data)
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url);
        if (!empty($data)){
            curl_setopt($curl, CURLOPT_POST, 1);
            curl_setopt($curl, CURLOPT_POSTFIELDS, $data);
        }
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
        $output = curl_exec($curl);
        curl_close($curl);
        return $output;
    }
    /*
    *发送https_get请求
    *@params string $url : URL链接
    *return json $ret : 返回请求的结果
     */
    private function https_get($url)
    {
        $curl = curl_init();
        curl_setopt($curl, CURLOPT_URL, $url); 
        curl_setopt($curl, CURLOPT_RETURNTRANSFER, TRUE); 
        curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, FALSE); 
        curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, FALSE);
        curl_setopt($curl, CURLOPT_HEADER, FALSE) ; 
        curl_setopt($curl, CURLOPT_TIMEOUT,60);    
        if (curl_errno($curl)) {
            return "Errno".curl_error($curl);
        }
        else{$result=curl_exec($curl);}
        curl_close($curl);
        return $result;
    }
}



$link = mysqli_connect("localhost","root","root","weixin");
$sql = " select `appId`,`appSecret`,`token`,`encodingAesKey`,`component_verify_ticket`,`component_access_token` from `weixin` where `type` = 1 ";
$result = mysqli_query($link,$sql);
$component = [];
while ($row = mysqli_fetch_assoc($result)) {
    $component["appid"] = $row["appId"];
    $component["secret"] = $row["appSecret"];
    $component["token"] = $row["token"];
    $component["key"] = $row["encodingAesKey"];
    $component["ticket"] = $row["component_verify_ticket"];
    $component["component_access_token"] = $row["component_access_token"];
}
$authorize = new Authorize($component["appid"],$component["secret"],$component["token"],$component["key"]);
$auth_url = $authorize->start_authorization("http://www.baidu.com/user/authorize_back.html",$component["ticket"],1);
echo "".$auth_url."";
?>

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