小程序授权

最新推荐文章于 2023-05-13 17:39:59 发布

原创最新推荐文章于 2023-05-13 17:39:59 发布 · 268 阅读

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本文介绍了一个小程序中实现用户授权的过程，包括通过session_key解密获取用户信息，并更新数据库中会员信息的方法。涉及到的技术包括PHP请求处理、微信API调用、数据校验及解密。

    public function authorization()
    {
        $mall_config = config('mall_config');
        $APPID = $mall_config['APPID'];//自己配置
        $AppSecret = $mall_config['AppSecret'];//自己配置
        $data = request()->get();
        $code = $data['code'];
        $url = "https://api.weixin.qq.com/sns/jscode2session?appid=" . $APPID . "&secret=" . $AppSecret . "&js_code=" . $code . "&grant_type=authorization_code";
        $arr = vget($url);
        $arr = json_decode($arr, true);
        $session_key = $arr['session_key'];
        // 数据签名校验
        $signature = $data['signature'];
        $rawData = $data['rawData'];
        $signature2 = sha1($rawData . $session_key);
        if ($signature != $signature2) {
            return ApiReturn::r(0, [], '验证失败，请重试');
        }
        $ruseut = getUserBySessionKey($APPID, $data['encryptedData'], $data['iv'], $session_key);
        $wxuserInfo = [
            'open_id' => $ruseut->openId,
            'nickName' => $ruseut->nickName,
            'gender' => $ruseut->gender,
            'avatarUrl' => $ruseut->avatarUrl,
        ];

        $uid = $data['uid'];
        $res = User::user_save($wxuserInfo, $uid);
        if (!$res) {
            return ApiReturn::r(0, [], '会员信息更新失败');
        }
        return ApiReturn::r(1, $wxuserInfo, '授权成功');
    }

function vget($url)
{
    $info = curl_init();
    curl_setopt($info, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($info, CURLOPT_HEADER, 0);
    curl_setopt($info, CURLOPT_NOBODY, 0);
    curl_setopt($info, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($info, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($info, CURLOPT_URL, $url);
    $output = curl_exec($info);
    curl_close($info);
    return $output;
}

小程序通过session_key解密获取

function getUserBySessionKey($app_id, $encrypted_data, $iv, $session_key)
{
    if (strlen($session_key) != 24) {
        return json(['code' => 500, 'msg' => 'session_key错误！']);
    }
    $aesKey = base64_decode($session_key);
    if (strlen($iv) != 24) {
        return json(['code' => 500, 'msg' => 'iv错误']);
    }
    $aesIV = base64_decode($iv);
    $aesCipher = base64_decode($encrypted_data);
    $result = openssl_decrypt($aesCipher, "AES-128-CBC", $aesKey, 1, $aesIV);
    $dataObj = json_decode($result);
    if ($dataObj == NULL) {
        return json(['code' => 500, 'msg' => '数据解析失败']);
    }
    if ($dataObj->watermark->appid != $app_id) {
        return json(['code' => 500, 'msg' => 'appid解析错误']);
    }
    return $dataObj;
}