spacestation/home/controllers/h5/paic/Base.php

<?php
defined('APPPATH') or exit('No direct script access allowed');

abstract class Base extends HD_Controller
{
    protected $log_dir = 'paic';
    const OPEN_ID_SESSION_KEY = "OPEN_ID_SESSION_KEY";
    const LOGIN_USER_INFO = "LOGIN_USER_INFO";
    protected $open_id = '';
    public $uid = '';
    protected $white_login_method = []; //授权白名单


    public function __construct()
    {
        parent::__construct();
        $this->load->library('session');
        $this->load->model('app/paic/app_paic_users_model', 'user_model');
        $this->load->library('hd_exception');
        if (checkua() == 'wx') {
            if (!$this->session->has_userdata(self::OPEN_ID_SESSION_KEY) && !$this->session->userdata(self::LOGIN_USER_INFO)) {
                $req = $this->set_auth();
                $this->open_id = $req['openid'];
                $this->session->set_userdata(self::OPEN_ID_SESSION_KEY, $this->open_id);
                if ($this->open_id) {
                    $user = $this->user_model->get(['open_id' => $this->open_id, 'status' => App_paic_users_model::STATUS_NORMAL]);
                    if ($user) {
                        $this->session->set_userdata(self::LOGIN_USER_INFO, $user);
                        $this->uid = $user['id'];
                    }
                }
            } else {
                $this->open_id = $this->session->userdata(self::OPEN_ID_SESSION_KEY);
                $user = $this->session->userdata(self::LOGIN_USER_INFO);
                $this->uid = $user['id'];
            }
        }
    }

    public function _remap($method)
    {
        try {
            $user = $this->session->userdata(self::LOGIN_USER_INFO);
            $this->uid = $user['id'];
            if (!in_array($method, $this->white_login_method) && !$user && !$this->uid) {
                if (checkua() == 'wx') {
                    if (!$this->session->userdata(self::OPEN_ID_SESSION_KEY)) {
                        $req = $this->set_auth();
                        $this->open_id = $req['openid'];
                        $this->session->set_userdata(self::OPEN_ID_SESSION_KEY, $this->open_id);
                    }
                    if ($this->open_id) {
                        $user = $this->user_model->get(['open_id' => $this->open_id, 'status' => App_paic_users_model::STATUS_NORMAL]);
                        if ($user) {
                            $this->session->set_userdata(self::LOGIN_USER_INFO, $user);
                            $this->uid = $user['id'];
                        }
                    }
                }
                header('Location:/h5/paic/login');
                exit;
            }
            return $this->$method();
        } catch (Exception $e) {//处理异常
            $msg = $e->getMessage();
            $data = array('heading' => 'Warning', 'message' => $msg);
            return $this->load->view('errors/html/error_404', $data);
        }
    }

    /**
     * @param $url       回调url地址
     * @param $auth      是否信息授权
     * @return void
     * @throws Hd_exception
     */
    protected function set_auth($url = '', $auth = 0)
    {
        $this->load->config('wechat');
        $config = $this->config->item('default');
        $code = $this->input->get('code');
        !$url && $url = http_host_com('home') . $_SERVER['REQUEST_URI'];
        $auth && $url = $_SERVER['QUERY_STRING'] ? $url . "&auth={$auth}" : $url . "?auth={$auth}";
        if ($code) {//授权码获取微信信息
            $auth_url = "https://api.weixin.qq.com/sns/oauth2/access_token?appid={$config['appid']}&secret={$config['appSecret']}&code={$code}&grant_type=authorization_code";
            $res = file_get_contents($auth_url);
            $ret = json_decode($res, true);
            if ($ret['errcode'] == 40163) { //code已被使用
                $param_arr = explode("&", $_SERVER['QUERY_STRING']);
                $query = [];
                $query_string = '';
                if ($param_arr) {
                    foreach ($param_arr as $item) {
                        if (strpos($item, 'code') === false && strpos($item, 'state=STATE')) {
                            $query[] = $item;
                        }
                    }
                    $query && $query_string = '?' . implode('&', $query);
                }
                $url = http_host_com('home') . $_SERVER['PATH_INFO'] . $query_string;
                redirect($url);
            }
            $access_token = $ret['access_token'];
            $openid = $ret['openid'];
            $unionid = $ret['unionid'];
            if ($this->input->get('auth') && $access_token) {
                $u_info_url = "https://api.weixin.qq.com/sns/userinfo?access_token={$access_token}&openid={$openid}&lang=zh_CN";
                $u_ret = file_get_contents($u_info_url);
                $ret = json_decode($u_ret, true);
            }
            if (!$openid) {
                debug_log("[error]# " . $res, __FUNCTION__, $this->log_dir);
                //异常处理
            }
            return $ret;
        } elseif ($auth) {//信息授权获取用户微信昵称/头像
            $redirect_uri = urlencode($url);
            $auth_url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid={$config['appid']}&redirect_uri={$redirect_uri}&response_type=code&scope=snsapi_userinfo&state=STATE#wechat_redirect&forcePopup=true";
            redirect($auth_url);
        } else {//静默授权获取用户openid
            $redirect_uri = urlencode($url);
            $auth_url = "https://open.weixin.qq.com/connect/oauth2/authorize?appid={$config['appid']}&redirect_uri={$redirect_uri}&response_type=code&scope=snsapi_base&state=STATE#wechat_redirect";
            redirect($auth_url);
        }
    }

    /**
     * @param $view
     */
    protected function show_view($view)
    {
        $this->load->view('h5/paic/header', $this->data);
        $this->load->view($view);
        $this->load->view('h5/paic/footer');
    }
}