package com.whyc.service;
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import com.whyc.dto.Response;
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import com.whyc.encryption.ByteConvertUtil;
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import com.whyc.encryption.SM2;
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import org.springframework.stereotype.Service;
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import java.math.BigInteger;
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import java.text.SimpleDateFormat;
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import java.util.Date;
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@Service
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public class LicenseService {
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/**
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* 证书文件校验,检查有效性并将文件存储在数据库
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*/
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public Response checkLicense(String license){
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Response model = new Response();
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boolean res = true;
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String origin = "Company: Fuguang Electronic\n"
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+ "Project:BTS monitor platform\n"
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+ "Licence type:";
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//初始化sm2参数x
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SM2 x = new SM2();
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// String realPath = ServletActionContext.getServletContext().getRealPath("/");
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// BigInteger privKey = x.importPrivateKey(realPath+"WEB-INF/classes/pri_key.ksm");
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BigInteger privKey = x.importPrivateKey("WEB-INF/classes/pri_key.ksm");
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//解密
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try {
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byte[] bytes = ByteConvertUtil.hexToByteArray(license);
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String decryptResult = x.decrypt(bytes, privKey);
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if(decryptResult.indexOf(origin)!=-1){
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String[] split = decryptResult.split("Valid time:");
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if(split.length>1){
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String validTime=split[1];
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SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
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String today = dateFormat.format(new Date());
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if(validTime.compareTo(today)<0){
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res=false;
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}
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}
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}else{
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res=false;
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}
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}catch (Exception e){
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res=false;
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e.printStackTrace();
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}
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//license校验通过,校验数据库中是否已经存在
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if(res){
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// res =!(new User_infImpl().licenseExist(license));
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}
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if(res){
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model.setCode(1);
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}else{
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model.setMsg("无效的license");
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}
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return model;
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}
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}
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