com.netsteadfast.greenstep.service.aspect.ServiceAuthorityCheckAspect.java Source code

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Here is the source code for com.netsteadfast.greenstep.service.aspect.ServiceAuthorityCheckAspect.java

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/* 
 * Copyright 2012-2013 bambooBSC of copyright Chen Xin Nien
 * 
 * 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.
 * 
 * -----------------------------------------------------------------------
 * 
 * author:    Chen Xin Nien
 * contact: chen.xin.nien@gmail.com
 * 
 */
package com.netsteadfast.greenstep.service.aspect;

import java.lang.annotation.Annotation;
import java.lang.reflect.Method;

import org.apache.commons.lang3.StringUtils;
import org.apache.log4j.Logger;
import org.apache.shiro.SecurityUtils;
import org.apache.shiro.subject.Subject;
import org.aspectj.lang.ProceedingJoinPoint;
import org.aspectj.lang.annotation.Around;
import org.aspectj.lang.annotation.Aspect;
import org.aspectj.lang.reflect.MethodSignature;
import org.springframework.core.annotation.Order;
import org.springframework.stereotype.Component;
import org.springframework.stereotype.Service;

import com.netsteadfast.greenstep.base.Constants;
import com.netsteadfast.greenstep.base.SysMessageUtil;
import com.netsteadfast.greenstep.base.exception.AuthorityException;
import com.netsteadfast.greenstep.base.exception.ServiceException;
import com.netsteadfast.greenstep.base.model.GreenStepSysMsgConstants;
import com.netsteadfast.greenstep.base.model.ServiceAuthority;
import com.netsteadfast.greenstep.base.model.ServiceMethodAuthority;
import com.netsteadfast.greenstep.base.model.ServiceMethodType;
import com.netsteadfast.greenstep.sys.SysEventLogSupport;

@Order(0)
@Aspect
@Component
public class ServiceAuthorityCheckAspect {
    protected Logger logger = Logger.getLogger(ServiceAuthorityCheckAspect.class);

    @Around(ServiceAspectConstants.AROUND_VALUE)
    public Object aroundMethod(ProceedingJoinPoint pjp) throws AuthorityException, ServiceException, Throwable {

        MethodSignature signature = (MethodSignature) pjp.getSignature();
        Annotation[] annotations = pjp.getTarget().getClass().getAnnotations();
        String serviceId = this.getServiceId(annotations);
        Subject subject = SecurityUtils.getSubject();
        Method method = signature.getMethod();
        if (subject.hasRole(Constants.SUPER_ROLE_ALL) || subject.hasRole(Constants.SUPER_ROLE_ADMIN)) {
            SysEventLogSupport.log((String) subject.getPrincipal(), Constants.getSystem(),
                    this.getEventId(serviceId, method.getName()), true);
            return pjp.proceed();
        }
        if (StringUtils.isBlank(serviceId)) { //  service id  
            SysEventLogSupport.log((String) subject.getPrincipal(), Constants.getSystem(),
                    this.getEventId(serviceId, method.getName()), true);
            return pjp.proceed();
        }
        if (!this.isServiceAuthorityCheck(annotations)) { //  ServiceAuthority  check=false ? 
            SysEventLogSupport.log((String) subject.getPrincipal(), Constants.getSystem(),
                    this.getEventId(serviceId, method.getName()), true);
            return pjp.proceed();
        }
        Annotation[] methodAnnotations = method.getAnnotations();
        if (this.isServiceMethodAuthority(serviceId, methodAnnotations, subject)) {
            SysEventLogSupport.log((String) subject.getPrincipal(), Constants.getSystem(),
                    this.getEventId(serviceId, method.getName()), true);
            return pjp.proceed();
        }
        logger.warn("[decline] user[" + subject.getPrincipal() + "] " + pjp.getTarget().getClass().getName() + " - "
                + signature.getMethod().getName());
        SysEventLogSupport.log((String) subject.getPrincipal(), Constants.getSystem(),
                this.getEventId(serviceId, method.getName()), false);
        throw new AuthorityException(SysMessageUtil.get(GreenStepSysMsgConstants.NO_PERMISSION));
    }

    private String getServiceId(Annotation[] annotations) {
        String serviceId = "";
        for (Annotation anno : annotations) {
            if (anno instanceof Service) {
                serviceId = ((Service) anno).value();
            }
        }
        return serviceId;
    }

    private boolean isServiceAuthorityCheck(Annotation[] annotations) { //  ServiceAuthority  check=false ? 
        if (null == annotations || annotations.length < 1) {
            return false;
        }
        boolean check = false;
        for (Annotation anno : annotations) {
            if (anno instanceof ServiceAuthority) {
                check = ((ServiceAuthority) anno).check();
            }
        }
        return check;
    }

    private boolean isServiceMethodAuthority(String serviceId, Annotation[] annotations, Subject subject) {
        if (annotations == null || annotations.length < 1) {
            return false;
        }
        boolean status = false;
        for (Annotation anno : annotations) {
            if (anno instanceof ServiceMethodAuthority) {
                ServiceMethodType[] types = ((ServiceMethodAuthority) anno).type();
                for (int i = 0; types != null && !status && i < types.length; i++) {
                    ServiceMethodType type = types[i];
                    //  core.service.logic.ApplicationSystemLogicService#INSERT
                    String methodPerm = serviceId + Constants.SERVICE_ID_TYPE_DISTINGUISH_SYMBOL + type.toString();
                    if (subject.isPermitted(methodPerm)) {
                        status = true;
                    }
                }
            }
        }
        return status;
    }

    private String getEventId(String serviceId, String methodName) {
        return serviceId + "@" + methodName;
    }

}