Package com.jfinal.ext.plugin.shiro

Source Code of com.jfinal.ext.plugin.shiro.PermissionAuthzHandler

/**
* Copyright (c) 2011-2013, dafei 李飞 (myaniu AT gmail DOT com)
*
* 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.
*/
package com.jfinal.ext.plugin.shiro;

import java.lang.annotation.Annotation;

import org.apache.shiro.authz.AuthorizationException;
import org.apache.shiro.authz.annotation.Logical;
import org.apache.shiro.authz.annotation.RequiresPermissions;
import org.apache.shiro.subject.Subject;

/**
* 基于权限的访问控制处理器,非单例模式运行。
* @author dafei
*
*/
class PermissionAuthzHandler extends AbstractAuthzHandler {
  private final Annotation annotation;

  public PermissionAuthzHandler(Annotation annotation) {
    this.annotation = annotation;
  }

  @Override
    public void assertAuthorized() throws AuthorizationException {
    if (!(annotation instanceof RequiresPermissions))
      return;

    RequiresPermissions rpAnnotation = (RequiresPermissions) annotation;
    String[] perms = rpAnnotation.value();
    Subject subject = getSubject();

    if (perms.length == 1) {
      subject.checkPermission(perms[0]);
      return;
    }
    if (Logical.AND.equals(rpAnnotation.logical())) {
      getSubject().checkPermissions(perms);
      return;
    }
    if (Logical.OR.equals(rpAnnotation.logical())) {
      // Avoid processing exceptions unnecessarily - "delay" throwing the
      // exception by calling hasRole first
      boolean hasAtLeastOnePermission = false;
      for (String permission : perms)
        if (getSubject().isPermitted(permission))
          hasAtLeastOnePermission = true;
      // Cause the exception if none of the role match, note that the
      // exception message will be a bit misleading
      if (!hasAtLeastOnePermission)
        getSubject().checkPermission(perms[0]);

    }

  }

}
TOP

Related Classes of com.jfinal.ext.plugin.shiro.PermissionAuthzHandler

TOP
Copyright © 2018 www.massapi.com. All rights reserved.
All source code are property of their respective owners. Java is a trademark of Sun Microsystems, Inc and owned by ORACLE Inc. Contact coftware#gmail.com.