792f606a64
Contains the cql3 grammer and supporting classes, which will be converted one by one. From commit bf599fb5b062cbcc652da78b7d699e7a01b949ad.
67 lines
2.8 KiB
Java
67 lines
2.8 KiB
Java
/*
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* Licensed to the Apache Software Foundation (ASF) under one
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* or more contributor license agreements. See the NOTICE file
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* distributed with this work for additional information
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* regarding copyright ownership. The ASF licenses this file
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* to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance
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* with the License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package org.apache.cassandra.cql3.statements;
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import java.util.Set;
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import org.apache.cassandra.auth.Auth;
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import org.apache.cassandra.auth.DataResource;
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import org.apache.cassandra.auth.IResource;
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import org.apache.cassandra.auth.Permission;
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import org.apache.cassandra.exceptions.InvalidRequestException;
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import org.apache.cassandra.exceptions.RequestValidationException;
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import org.apache.cassandra.exceptions.UnauthorizedException;
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import org.apache.cassandra.service.ClientState;
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public abstract class PermissionAlteringStatement extends AuthorizationStatement
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{
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protected final Set<Permission> permissions;
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protected DataResource resource;
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protected final String username;
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protected PermissionAlteringStatement(Set<Permission> permissions, IResource resource, String username)
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{
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this.permissions = permissions;
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this.resource = (DataResource) resource;
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this.username = username;
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}
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public void validate(ClientState state) throws RequestValidationException
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{
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// validate login here before checkAccess to avoid leaking user existence to anonymous users.
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state.ensureNotAnonymous();
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if (!Auth.isExistingUser(username))
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throw new InvalidRequestException(String.format("User %s doesn't exist", username));
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// if a keyspace is omitted when GRANT/REVOKE ON TABLE <table>, we need to correct the resource.
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resource = maybeCorrectResource(resource, state);
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if (!resource.exists())
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throw new InvalidRequestException(String.format("%s doesn't exist", resource));
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}
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public void checkAccess(ClientState state) throws UnauthorizedException
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{
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// check that the user has AUTHORIZE permission on the resource or its parents, otherwise reject GRANT/REVOKE.
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state.ensureHasPermission(Permission.AUTHORIZE, resource);
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// check that the user has [a single permission or all in case of ALL] on the resource or its parents.
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for (Permission p : permissions)
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state.ensureHasPermission(p, resource);
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}
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}
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