de.triology.blog.complexspermissions.ComplexPermissionRealm.java Source code

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Here is the source code for de.triology.blog.complexspermissions.ComplexPermissionRealm.java

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/**
 * The MIT License (MIT)
 *
 * Copyright (c) 2016 TRIOLOGY GmbH
 *
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 *
 * The above copyright notice and this permission notice shall be included in all
 * copies or substantial portions of the Software.
 *
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
 * SOFTWARE.
 */
package de.triology.blog.complexspermissions;

import org.apache.shiro.authc.AuthenticationException;
import org.apache.shiro.authc.AuthenticationInfo;
import org.apache.shiro.authc.AuthenticationToken;
import org.apache.shiro.authc.SimpleAuthenticationInfo;
import org.apache.shiro.authz.AuthorizationInfo;
import org.apache.shiro.authz.Permission;
import org.apache.shiro.authz.SimpleAuthorizationInfo;
import org.apache.shiro.realm.AuthorizingRealm;
import org.apache.shiro.subject.PrincipalCollection;

import java.util.Arrays;
import java.util.Collection;

import static de.triology.blog.complexspermissions.PathUtils.filePath;

public class ComplexPermissionRealm extends AuthorizingRealm {

    @Override
    protected AuthorizationInfo doGetAuthorizationInfo(PrincipalCollection principalCollection) {
        SimpleAuthorizationInfo authorizationInfo = new SimpleAuthorizationInfo();
        authorizationInfo.addObjectPermissions(createFilePermissions());
        return authorizationInfo;
    }

    private Collection<Permission> createFilePermissions() {
        return Arrays.asList(
                new PermissionForTheFileItself(filePath("departments/development/employee_987"),
                        FileOperation.READ),
                new ReadPermissionForAncestors(filePath("departments/development/employee_987")),
                new PermissionForTheFileItself(filePath("departments/finance"), FileOperation.WRITE),
                new PermissionForAllDescendantFiles(filePath("departments/finance"), FileOperation.WRITE));
    }

    @Override
    protected AuthenticationInfo doGetAuthenticationInfo(AuthenticationToken authenticationToken)
            throws AuthenticationException {
        // simply authenticate anything for demonstration purposes
        return new SimpleAuthenticationInfo(authenticationToken.getPrincipal(),
                authenticationToken.getCredentials(), getName());
    }
}