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/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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 org.apache.hadoop.hive.ql.security.authorization;
import java.util.ArrayList;
import java.util.List;
import org.apache.hadoop.classification.InterfaceAudience.LimitedPrivate;
import org.apache.hadoop.hive.metastore.api.HiveObjectPrivilege;
import org.apache.hadoop.hive.metastore.api.HiveObjectRef;
import org.apache.hadoop.hive.metastore.api.HiveObjectType;
import org.apache.hadoop.hive.metastore.api.PrincipalType;
import org.apache.hadoop.hive.metastore.api.PrivilegeGrantInfo;
import org.apache.hadoop.hive.ql.ErrorMsg;
import org.apache.hadoop.hive.ql.exec.Utilities;
import org.apache.hadoop.hive.ql.hooks.Entity;
import org.apache.hadoop.hive.ql.hooks.Entity.Type;
import org.apache.hadoop.hive.ql.hooks.WriteEntity;
import org.apache.hadoop.hive.ql.hooks.WriteEntity.WriteType;
import org.apache.hadoop.hive.ql.metadata.HiveException;
import org.apache.hadoop.hive.ql.plan.PrincipalDesc;
import org.apache.hadoop.hive.ql.plan.PrivilegeDesc;
import org.apache.hadoop.hive.ql.plan.PrivilegeObjectDesc;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrincipal;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrincipal.HivePrincipalType;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrivilege;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrivilegeInfo;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrivilegeObject;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrivilegeObject.HivePrivObjectActionType;
import org.apache.hadoop.hive.ql.security.authorization.plugin.HivePrivilegeObject.HivePrivilegeObjectType;
import org.apache.hadoop.hive.ql.session.SessionState;
/**
* Utility code shared by hive internal code and sql standard authorization plugin implementation
*/
@LimitedPrivate(value = { "Sql standard authorization plugin" })
public class AuthorizationUtils {
/**
* Convert thrift principal type to authorization plugin principal type
* @param type - thrift principal type
* @return
* @throws HiveException
*/
public static HivePrincipalType getHivePrincipalType(PrincipalType type) throws HiveException {
if (type == null) {
return null;
}
switch(type){
case USER:
return HivePrincipalType.USER;
case ROLE:
return HivePrincipalType.ROLE;
case GROUP:
return HivePrincipalType.GROUP;
default:
//should not happen as we take care of all existing types
throw new AssertionError("Unsupported authorization type specified");
}
}
/**
* Convert thrift object type to hive authorization plugin object type
* @param type - thrift object type
* @return
*/
public static HivePrivilegeObjectType getHivePrivilegeObjectType(Type type) {
if (type == null){
return null;
}
switch(type){
case DATABASE:
return HivePrivilegeObjectType.DATABASE;
case TABLE:
return HivePrivilegeObjectType.TABLE_OR_VIEW;
case LOCAL_DIR:
return HivePrivilegeObjectType.LOCAL_URI;
case DFS_DIR:
return HivePrivilegeObjectType.DFS_URI;
case PARTITION:
case DUMMYPARTITION: //need to determine if a different type is needed for dummy partitions
return HivePrivilegeObjectType.PARTITION;
case FUNCTION:
return HivePrivilegeObjectType.FUNCTION;
default:
return null;
}
}
public static HivePrivilegeObjectType getPrivObjectType(PrivilegeObjectDesc privSubjectDesc) {
if (privSubjectDesc.getObject() == null) {
return null;
}
return privSubjectDesc.getTable() ? HivePrivilegeObjectType.TABLE_OR_VIEW :
HivePrivilegeObjectType.DATABASE;
}
public static List getHivePrivileges(List privileges) {
List hivePrivileges = new ArrayList();
for(PrivilegeDesc privilege : privileges){
Privilege priv = privilege.getPrivilege();
hivePrivileges.add(
new HivePrivilege(priv.toString(), privilege.getColumns(), priv.getScopeList()));
}
return hivePrivileges;
}
public static List getHivePrincipals(List principals)
throws HiveException {
ArrayList hivePrincipals = new ArrayList();
for(PrincipalDesc principal : principals){
hivePrincipals.add(getHivePrincipal(principal));
}
return hivePrincipals;
}
public static HivePrincipal getHivePrincipal(PrincipalDesc principal) throws HiveException {
if (principal == null) {
return null;
}
return getHivePrincipal(principal.getName(), principal.getType());
}
public static HivePrincipal getHivePrincipal(String name, PrincipalType type) throws HiveException {
return new HivePrincipal(name, AuthorizationUtils.getHivePrincipalType(type));
}
public static List getPrivilegeInfos(List privs)
throws HiveException {
List hivePrivs = new ArrayList();
for (HiveObjectPrivilege priv : privs) {
PrivilegeGrantInfo grantorInfo = priv.getGrantInfo();
HiveObjectRef privObject = priv.getHiveObject();
HivePrincipal hivePrincipal =
getHivePrincipal(priv.getPrincipalName(), priv.getPrincipalType());
HivePrincipal grantor =
getHivePrincipal(grantorInfo.getGrantor(), grantorInfo.getGrantorType());
HivePrivilegeObject object = getHiveObjectRef(privObject);
HivePrivilege privilege = new HivePrivilege(grantorInfo.getPrivilege(), null);
hivePrivs.add(new HivePrivilegeInfo(hivePrincipal, privilege, object, grantor,
grantorInfo.isGrantOption(), grantorInfo.getCreateTime()));
}
return hivePrivs;
}
public static HivePrivilegeObject getHiveObjectRef(HiveObjectRef privObj) throws HiveException {
if (privObj == null) {
return null;
}
HivePrivilegeObjectType objType = getHiveObjType(privObj.getObjectType());
return new HivePrivilegeObject(objType, privObj.getDbName(), privObj.getObjectName(),
privObj.getPartValues(), privObj.getColumnName());
}
public static HivePrivilegeObject getHivePrivilegeObject(PrivilegeObjectDesc privSubjectDesc)
throws HiveException {
// null means ALL for show grants, GLOBAL for grant/revoke
HivePrivilegeObjectType objectType = null;
String[] dbTable;
List partSpec = null;
List columns = null;
if (privSubjectDesc == null) {
dbTable = new String[] {null, null};
} else {
if (privSubjectDesc.getTable()) {
dbTable = Utilities.getDbTableName(privSubjectDesc.getObject());
} else {
dbTable = new String[] {privSubjectDesc.getObject(), null};
}
if (privSubjectDesc.getPartSpec() != null) {
partSpec = new ArrayList(privSubjectDesc.getPartSpec().values());
}
columns = privSubjectDesc.getColumns();
objectType = getPrivObjectType(privSubjectDesc);
}
return new HivePrivilegeObject(objectType, dbTable[0], dbTable[1], partSpec, columns, null);
}
/**
* Convert authorization plugin principal type to thrift principal type
* @param type
* @return
* @throws HiveException
*/
public static PrincipalType getThriftPrincipalType(HivePrincipalType type) {
if(type == null){
return null;
}
switch(type){
case USER:
return PrincipalType.USER;
case GROUP:
return PrincipalType.GROUP;
case ROLE:
return PrincipalType.ROLE;
default:
throw new AssertionError("Invalid principal type " + type);
}
}
/**
* Get thrift privilege grant info
* @param privilege
* @param grantorPrincipal
* @param grantOption
* @param grantTime
* @return
* @throws HiveException
*/
public static PrivilegeGrantInfo getThriftPrivilegeGrantInfo(HivePrivilege privilege,
HivePrincipal grantorPrincipal, boolean grantOption, int grantTime) throws HiveException {
return new PrivilegeGrantInfo(privilege.getName(), grantTime,
grantorPrincipal.getName(), getThriftPrincipalType(grantorPrincipal.getType()), grantOption);
}
/**
* Convert plugin privilege object type to thrift type
* @param type
* @return
* @throws HiveException
*/
public static HiveObjectType getThriftHiveObjType(HivePrivilegeObjectType type) throws HiveException {
if (type == null) {
return null;
}
switch(type){
case GLOBAL:
return HiveObjectType.GLOBAL;
case DATABASE:
return HiveObjectType.DATABASE;
case TABLE_OR_VIEW:
return HiveObjectType.TABLE;
case PARTITION:
return HiveObjectType.PARTITION;
case COLUMN:
return HiveObjectType.COLUMN;
default:
throw new HiveException("Unsupported type " + type);
}
}
// V1 to V2 conversion.
private static HivePrivilegeObjectType getHiveObjType(HiveObjectType type) throws HiveException {
if (type == null) {
return null;
}
switch(type){
case GLOBAL:
if (SessionState.get().getAuthorizationMode() == SessionState.AuthorizationMode.V2) {
throw new HiveException(ErrorMsg.UNSUPPORTED_AUTHORIZATION_RESOURCE_TYPE_GLOBAL);
}
return HivePrivilegeObjectType.GLOBAL;
case DATABASE:
return HivePrivilegeObjectType.DATABASE;
case TABLE:
return HivePrivilegeObjectType.TABLE_OR_VIEW;
case PARTITION:
return HivePrivilegeObjectType.PARTITION;
case COLUMN:
if (SessionState.get().getAuthorizationMode() == SessionState.AuthorizationMode.V2) {
throw new HiveException(ErrorMsg.UNSUPPORTED_AUTHORIZATION_RESOURCE_TYPE_COLUMN);
}
return HivePrivilegeObjectType.COLUMN;
default:
//should not happen as we have accounted for all types
throw new AssertionError("Unsupported type " + type);
}
}
/**
* Convert thrift HiveObjectRef to plugin HivePrivilegeObject
* @param privObj
* @return
* @throws HiveException
*/
public static HiveObjectRef getThriftHiveObjectRef(HivePrivilegeObject privObj) throws HiveException {
if (privObj == null) {
return null;
}
HiveObjectType objType = getThriftHiveObjType(privObj.getType());
return new HiveObjectRef(objType, privObj.getDbname(), privObj.getObjectName(), null, null);
}
public static HivePrivObjectActionType getActionType(Entity privObject) {
HivePrivObjectActionType actionType = HivePrivObjectActionType.OTHER;
if (privObject instanceof WriteEntity) {
WriteType writeType = ((WriteEntity) privObject).getWriteType();
switch (writeType) {
case INSERT:
return HivePrivObjectActionType.INSERT;
case INSERT_OVERWRITE:
return HivePrivObjectActionType.INSERT_OVERWRITE;
case UPDATE:
return HivePrivObjectActionType.UPDATE;
case DELETE:
return HivePrivObjectActionType.DELETE;
default:
// Ignore other types for purposes of authorization
break;
}
}
return actionType;
}
}
