/*
|
* Copyright [2020-2030] [https://www.stylefeng.cn]
|
*
|
* Licensed under the Apache License, Version 2.0 (the "License");
|
* you may not use this file except in compliance with the License.
|
* You may obtain a copy of the License at
|
*
|
* http://www.apache.org/licenses/LICENSE-2.0
|
*
|
* Unless required by applicable law or agreed to in writing, software
|
* distributed under the License is distributed on an "AS IS" BASIS,
|
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
* See the License for the specific language governing permissions and
|
* limitations under the License.
|
*
|
* Guns采用APACHE LICENSE 2.0开源协议，您在使用过程中，需要注意以下几点：
|
*
|
* 1.请不要删除和修改根目录下的LICENSE文件。
|
* 2.请不要删除和修改Guns源码头部的版权声明。
|
* 3.请保留源码和相关描述文件的项目出处，作者声明等。
|
* 4.分发源码时候，请注明软件出处 https://gitee.com/stylefeng/guns
|
* 5.在修改包名，模块名称，项目代码等时，请注明软件出处 https://gitee.com/stylefeng/guns
|
* 6.若您的项目无法满足以上几点，可申请商业授权
|
*/
|
package cn.stylefeng.roses.kernel.security.captcha;
|
|
import cn.hutool.core.codec.Base64;
|
import cn.hutool.core.convert.Convert;
|
import cn.hutool.core.io.IoUtil;
|
import cn.hutool.core.util.IdUtil;
|
import cn.hutool.core.util.StrUtil;
|
import cn.stylefeng.roses.kernel.cache.api.CacheOperatorApi;
|
import cn.stylefeng.roses.kernel.security.api.DragCaptchaApi;
|
import cn.stylefeng.roses.kernel.security.api.exception.SecurityException;
|
import cn.stylefeng.roses.kernel.security.api.exception.enums.SecurityExceptionEnum;
|
import cn.stylefeng.roses.kernel.security.api.pojo.DragCaptchaImageDTO;
|
import cn.stylefeng.roses.kernel.security.captcha.util.DragCaptchaImageUtil;
|
import lombok.extern.slf4j.Slf4j;
|
|
import java.io.ByteArrayInputStream;
|
import java.io.IOException;
|
|
/**
|
* 拖拽验证码实现
|
*
|
* @author fengshuonan
|
* @date 2021/7/5 11:34
|
*/
|
@Slf4j
|
public class DragCaptchaService implements DragCaptchaApi {
|
|
private final CacheOperatorApi<String> cacheOperatorApi;
|
|
public DragCaptchaService(CacheOperatorApi<String> cacheOperatorApi) {
|
this.cacheOperatorApi = cacheOperatorApi;
|
}
|
|
public DragCaptchaImageDTO createCaptcha() {
|
ByteArrayInputStream byteArrayInputStream = new ByteArrayInputStream(Base64.decode(DragCaptchaImageUtil.IMAGE_BASE64));
|
try {
|
DragCaptchaImageDTO dragCaptchaImageDTO = DragCaptchaImageUtil.getVerifyImage(byteArrayInputStream);
|
|
// 缓存x轴坐标
|
String verKey = IdUtil.simpleUUID();
|
Integer verValue = dragCaptchaImageDTO.getLocationX();
|
cacheOperatorApi.put(verKey, verValue.toString());
|
|
// 清空x轴坐标
|
dragCaptchaImageDTO.setKey(verKey);
|
// dragCaptchaImageDTO.setLocationX(null);
|
|
return dragCaptchaImageDTO;
|
} catch (IOException e) {
|
throw new SecurityException(SecurityExceptionEnum.CAPTCHA_ERROR);
|
} finally {
|
IoUtil.close(byteArrayInputStream);
|
}
|
}
|
|
public boolean validateCaptcha(String verKey, Integer verScope) {
|
if (StrUtil.isEmpty(verKey)) {
|
return false;
|
}
|
if (verScope == null) {
|
return false;
|
}
|
|
// 获取缓存中正确的locationX的值
|
String locationXString = cacheOperatorApi.get(verKey);
|
if (StrUtil.isEmpty(locationXString)) {
|
throw new SecurityException(SecurityExceptionEnum.CAPTCHA_INVALID_ERROR);
|
}
|
|
// 获取缓存中存储的范围
|
Integer locationX = Convert.toInt(locationXString);
|
int beginScope = locationX - 5;
|
int endScope = locationX + 5;
|
|
// 每次验证不管成功和失败都剔除掉key
|
cacheOperatorApi.remove(verKey);
|
|
// 验证缓存中的范围值
|
return verScope >= beginScope && verScope <= endScope;
|
}
|
|
}
|
