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/* Copyright (c) 2001-2019, The HSQL Development Group
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* Neither the name of the HSQL Development Group nor the names of its
* contributors may be used to endorse or promote products derived from this
* software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL HSQL DEVELOPMENT GROUP, HSQLDB.ORG,
* OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package org.hsqldb.rights;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import org.hsqldb.Database;
import org.hsqldb.HsqlNameManager;
import org.hsqldb.HsqlNameManager.HsqlName;
import org.hsqldb.Routine;
import org.hsqldb.RoutineSchema;
import org.hsqldb.SchemaObject;
import org.hsqldb.Session;
import org.hsqldb.SqlInvariants;
import org.hsqldb.Tokens;
import org.hsqldb.error.Error;
import org.hsqldb.error.ErrorCode;
import org.hsqldb.lib.Collection;
import org.hsqldb.lib.HashMappedList;
import org.hsqldb.lib.HsqlArrayList;
import org.hsqldb.lib.IntValueHashMap;
import org.hsqldb.lib.Iterator;
import org.hsqldb.lib.OrderedHashSet;
import org.hsqldb.lib.Set;
import org.hsqldb.lib.StringConverter;
import org.hsqldb.lib.java.JavaSystem;
/**
* Contains a set of Grantee objects, and supports operations for creating,
* finding, modifying and deleting Grantee objects for a Database; plus
* Administrative privileges.
*
*
* @author Campbell Burnet (campbell-burnet@users dot sourceforge.net)
* @author Fred Toussi (fredt@users dot sourceforge.net)
* @author Blaine Simpson (blaine dot simpson at admc dot com)
*
* @version 2.5.0
* @since 1.8.0
* @see Grantee
*/
public class GranteeManager {
/**
* The grantee object for the _SYSTEM role.
*/
static User systemAuthorisation;
static {
HsqlName name = HsqlNameManager.newSystemObjectName(
SqlInvariants.SYSTEM_AUTHORIZATION_NAME, SchemaObject.GRANTEE);
systemAuthorisation = new User(name, null);
systemAuthorisation.isSystem = true;
systemAuthorisation.setAdminDirect();
systemAuthorisation.setInitialSchema(
SqlInvariants.SYSTEM_SCHEMA_HSQLNAME);
SqlInvariants.INFORMATION_SCHEMA_HSQLNAME.owner = systemAuthorisation;
SqlInvariants.SYSTEM_SCHEMA_HSQLNAME.owner = systemAuthorisation;
SqlInvariants.LOBS_SCHEMA_HSQLNAME.owner = systemAuthorisation;
SqlInvariants.SQLJ_SCHEMA_HSQLNAME.owner = systemAuthorisation;
}
/**
* Map of grantee-String-to-Grantee-objects.
* Keys include all USER and ROLE names
*/
private HashMappedList map = new HashMappedList();
/**
* Map of role-Strings-to-Grantee-object.
* Keys include all ROLES names
*/
private HashMappedList roleMap = new HashMappedList();
/**
* Used only to pass the SchemaManager to Grantees for checking
* schema authorizations.
*/
Database database;
/**
* MessageDigest instance for database
*/
private MessageDigest digester;
/**
* MessageDigest algorithm
*/
private String digestAlgo;
/**
* The PUBLIC role.
*/
Grantee publicRole;
/**
* The DBA role.
*/
Grantee dbaRole;
/**
* The role for schema creation rights.
*/
Grantee schemaRole;
/**
* The role for changing authorization rights.
*/
Grantee changeAuthRole;
/**
* Construct the GranteeManager for a Database. Construct special Grantee
* objects for _SYSTEM, PUBLIC and DBA, and add them to the Grantee map.
*
* @param database Only needed to link to the RoleManager later on.
*/
public GranteeManager(Database database) {
this.database = database;
// map.add(systemAuthorisation.getNameString(), systemAuthorisation);
// roleMap.add(systemAuthorisation.getNameString(), systemAuthorisation);
addRole(
this.database.nameManager.newHsqlName(
SqlInvariants.PUBLIC_ROLE_NAME, false, SchemaObject.GRANTEE));
publicRole = getRole(SqlInvariants.PUBLIC_ROLE_NAME);
publicRole.isPublic = true;
addRole(
this.database.nameManager.newHsqlName(
SqlInvariants.DBA_ADMIN_ROLE_NAME, false,
SchemaObject.GRANTEE));
dbaRole = getRole(SqlInvariants.DBA_ADMIN_ROLE_NAME);
dbaRole.setAdminDirect();
addRole(
this.database.nameManager.newHsqlName(
SqlInvariants.SCHEMA_CREATE_ROLE_NAME, false,
SchemaObject.GRANTEE));
schemaRole = getRole(SqlInvariants.SCHEMA_CREATE_ROLE_NAME);
addRole(
this.database.nameManager.newHsqlName(
SqlInvariants.CHANGE_AUTH_ROLE_NAME, false,
SchemaObject.GRANTEE));
changeAuthRole = getRole(SqlInvariants.CHANGE_AUTH_ROLE_NAME);
}
static final IntValueHashMap rightsStringLookup = new IntValueHashMap(7);
static {
rightsStringLookup.put(Tokens.T_ALL, GrantConstants.ALL);
rightsStringLookup.put(Tokens.T_SELECT, GrantConstants.SELECT);
rightsStringLookup.put(Tokens.T_UPDATE, GrantConstants.UPDATE);
rightsStringLookup.put(Tokens.T_DELETE, GrantConstants.DELETE);
rightsStringLookup.put(Tokens.T_INSERT, GrantConstants.INSERT);
rightsStringLookup.put(Tokens.T_EXECUTE, GrantConstants.EXECUTE);
rightsStringLookup.put(Tokens.T_USAGE, GrantConstants.USAGE);
rightsStringLookup.put(Tokens.T_REFERENCES, GrantConstants.REFERENCES);
rightsStringLookup.put(Tokens.T_TRIGGER, GrantConstants.TRIGGER);
}
public Grantee getDBARole() {
return dbaRole;
}
public static Grantee getSystemRole() {
return systemAuthorisation;
}
/**
* Grants the rights represented by the rights argument on
* the database object identified by the dbobject argument
* to the Grantee object identified by name argument.
*
* Note: For the dbobject argument, Java Class objects are identified
* using a String object whose value is the fully qualified name
* of the Class, while Table and other objects are
* identified by an HsqlName object. A Table
* object identifier must be precisely the one obtained by calling
* table.getName(); if a different HsqlName
* object with an identical name attribute is specified, then
* rights checks and tests will fail, since the HsqlName
* class implements its {@link HsqlName#hashCode hashCode} and
* {@link HsqlName#equals equals} methods based on pure object
* identity, rather than on attribute values.
*/
public void grant(Session session, OrderedHashSet granteeList,
SchemaObject dbObject, Right right, Grantee grantor,
boolean withGrantOption) {
if (dbObject instanceof RoutineSchema) {
SchemaObject[] routines =
((RoutineSchema) dbObject).getSpecificRoutines();
grant(session, granteeList, routines, right, grantor,
withGrantOption);
return;
}
HsqlName name = dbObject.getName();
if (dbObject instanceof Routine) {
name = ((Routine) dbObject).getSpecificName();
}
if (!grantor.isAccessible(dbObject)) {
throw Error.error(ErrorCode.X_0L000,
grantor.getName().getNameString());
}
if (!grantor.isGrantable(dbObject, right)) {
session.addWarning(Error.error(ErrorCode.W_01007,
grantor.getName().getNameString()));
return;
}
if (grantor.isAdmin()) {
grantor = dbObject.getOwner();
}
checkGranteeList(granteeList);
for (int i = 0; i < granteeList.size(); i++) {
Grantee grantee = get((String) granteeList.get(i));
grantee.grant(name, right, grantor, withGrantOption);
if (grantee.isRole) {
updateAllRights(grantee);
}
}
}
public void grant(Session session, OrderedHashSet granteeList,
SchemaObject[] routines, Right right, Grantee grantor,
boolean withGrantOption) {
boolean granted = false;
for (int i = 0; i < routines.length; i++) {
if (!grantor.isGrantable(routines[i], right)) {
continue;
}
grant(session, granteeList, routines[i], right, grantor,
withGrantOption);
granted = true;
}
if (!granted) {
throw Error.error(ErrorCode.X_0L000,
grantor.getName().getNameString());
}
}
public void checkGranteeList(OrderedHashSet granteeList) {
for (int i = 0; i < granteeList.size(); i++) {
String name = (String) granteeList.get(i);
Grantee grantee = get(name);
if (grantee == null) {
throw Error.error(ErrorCode.X_28501, name);
}
if (isImmutable(name)) {
throw Error.error(ErrorCode.X_28502, name);
}
if (grantee instanceof User && ((User) grantee).isExternalOnly) {
throw Error.error(ErrorCode.X_28000, name);
}
}
}
/**
* Grant a role to this Grantee.
*/
public void grant(String granteeName, String roleName, Grantee grantor) {
Grantee grantee = get(granteeName);
if (grantee == null) {
throw Error.error(ErrorCode.X_28501, granteeName);
}
if (isImmutable(granteeName)) {
throw Error.error(ErrorCode.X_28502, granteeName);
}
Grantee role = getRole(roleName);
if (role == null) {
throw Error.error(ErrorCode.X_0P000, roleName);
}
if (role == grantee) {
throw Error.error(ErrorCode.X_0P501, granteeName);
}
// campbell-burnet@users 20050515
// SQL 2003 Foundation, 4.34.3
// No cycles of role grants are allowed.
if (role.hasRole(grantee)) {
// campbell-burnet@users
/** @todo: Correct reporting of actual grant path */
throw Error.error(ErrorCode.X_0P501, roleName);
}
if (!grantor.isGrantable(role)) {
throw Error.error(ErrorCode.X_0L000,
grantor.getName().getNameString());
}
grantee.grant(role);
grantee.updateAllRights();
if (grantee.isRole) {
updateAllRights(grantee);
}
}
public void checkRoleList(String granteeName, OrderedHashSet roleList,
Grantee grantor, boolean grant) {
Grantee grantee = get(granteeName);
for (int i = 0; i < roleList.size(); i++) {
String roleName = (String) roleList.get(i);
Grantee role = getRole(roleName);
if (role == null) {
throw Error.error(ErrorCode.X_0P000, roleName);
}
if (roleName.equals(SqlInvariants.SYSTEM_AUTHORIZATION_NAME)
|| roleName.equals(SqlInvariants.PUBLIC_ROLE_NAME)) {
throw Error.error(ErrorCode.X_28502, roleName);
}
if (grant) {
if (grantee.getDirectRoles().contains(role)) {
/** @todo shouldn't throw */
throw Error.error(ErrorCode.X_0P000, granteeName);
}
} else {
if (!grantee.getDirectRoles().contains(role)) {
/** @todo shouldn't throw */
throw Error.error(ErrorCode.X_0P000, roleName);
}
}
if (!grantor.isAdmin()) {
throw Error.error(ErrorCode.X_0L000,
grantor.getName().getNameString());
}
}
}
public void grantSystemToPublic(SchemaObject object, Right right) {
publicRole.grant(object.getName(), right, systemAuthorisation, true);
}
/**
* Revoke a role from a Grantee
*/
public void revoke(String granteeName, String roleName, Grantee grantor) {
if (!grantor.isAdmin()) {
throw Error.error(ErrorCode.X_42507);
}
Grantee grantee = get(granteeName);
if (grantee == null) {
throw Error.error(ErrorCode.X_28000, granteeName);
}
Grantee role = (Grantee) roleMap.get(roleName);
grantee.revoke(role);
grantee.updateAllRights();
if (grantee.isRole) {
updateAllRights(grantee);
}
}
/**
* Revokes the rights represented by the rights argument on
* the database object identified by the dbobject argument
* from the User object identified by the name
* argument.
* @see #grant
*/
public void revoke(OrderedHashSet granteeList, SchemaObject dbObject,
Right rights, Grantee grantor, boolean grantOption,
boolean cascade) {
if (dbObject instanceof RoutineSchema) {
SchemaObject[] routines =
((RoutineSchema) dbObject).getSpecificRoutines();
revoke(granteeList, routines, rights, grantor, grantOption,
cascade);
return;
}
HsqlName name = dbObject.getName();
if (dbObject instanceof Routine) {
name = ((Routine) dbObject).getSpecificName();
}
if (!grantor.isFullyAccessibleByRole(name)) {
throw Error.error(ErrorCode.X_42501, dbObject.getName().name);
}
if (grantor.isAdmin()) {
grantor = dbObject.getOwner();
}
for (int i = 0; i < granteeList.size(); i++) {
String granteeName = (String) granteeList.get(i);
Grantee g = get(granteeName);
if (g == null) {
throw Error.error(ErrorCode.X_28501, granteeName);
}
if (isImmutable(granteeName)) {
throw Error.error(ErrorCode.X_28502, granteeName);
}
}
for (int i = 0; i < granteeList.size(); i++) {
String granteeName = (String) granteeList.get(i);
Grantee g = get(granteeName);
g.revoke(dbObject, rights, grantor, grantOption);
g.updateAllRights();
if (g.isRole) {
updateAllRights(g);
}
}
}
public void revoke(OrderedHashSet granteeList, SchemaObject[] routines,
Right rights, Grantee grantor, boolean grantOption,
boolean cascade) {
for (int i = 0; i < routines.length; i++) {
revoke(granteeList, routines[i], rights, grantor, grantOption,
cascade);
}
}
/**
* Updates all the talbe level rights on a table after the addition of a
* column.
*/
public void updateAddColumn(HsqlName table, HsqlName column) {
// roles
Iterator it = getRoles().iterator();
while (it.hasNext()) {
Grantee grantee = (Grantee) it.next();
grantee.updateRightsForNewColumn(table, column);
}
// users
it = getGrantees().iterator();
for (; it.hasNext(); ) {
Grantee grantee = (Grantee) it.next();
grantee.updateRightsForNewColumn(table, column);
}
updateAddColumn(table);
}
private void updateAddColumn(HsqlName table) {
// roles
Iterator it = getRoles().iterator();
while (it.hasNext()) {
Grantee grantee = (Grantee) it.next();
grantee.updateRightsForNewColumn(table);
}
// users
it = getGrantees().iterator();
for (; it.hasNext(); ) {
Grantee grantee = (Grantee) it.next();
grantee.updateRightsForNewColumn(table);
}
}
/**
* Removes a role without any privileges from all grantees
*/
void removeEmptyRole(Grantee role) {
for (int i = 0; i < map.size(); i++) {
Grantee grantee = (Grantee) map.get(i);
grantee.roles.remove(role);
}
}
/**
* Removes all rights mappings for the database object identified by
* the dbobject argument from all Grantee objects in the set.
*/
public void removeDbObject(HsqlName name) {
for (int i = 0; i < map.size(); i++) {
Grantee g = (Grantee) map.get(i);
g.revokeDbObject(name);
}
}
public void removeDbObjects(OrderedHashSet nameSet) {
Iterator it = nameSet.iterator();
while (it.hasNext()) {
HsqlName name = (HsqlName) it.next();
for (int i = 0; i < map.size(); i++) {
Grantee g = (Grantee) map.get(i);
g.revokeDbObject(name);
}
}
}
/**
* First updates all ROLE Grantee objects. Then updates all USER Grantee
* Objects.
*/
void updateAllRights(Grantee role) {
for (int i = 0; i < map.size(); i++) {
Grantee grantee = (Grantee) map.get(i);
if (grantee.isRole) {
grantee.updateNestedRoles(role);
}
}
for (int i = 0; i < map.size(); i++) {
Grantee grantee = (Grantee) map.get(i);
if (!grantee.isRole) {
grantee.updateAllRights();
}
}
}
/**
*/
public boolean removeGrantee(String name) {
/*
* Explicitly can't remove PUBLIC_USER_NAME and system grantees.
*/
if (isReserved(name)) {
return false;
}
Grantee g = (Grantee) map.remove(name);
if (g == null) {
return false;
}
g.clearPrivileges();
updateAllRights(g);
if (g.isRole) {
roleMap.remove(name);
removeEmptyRole(g);
}
return true;
}
/**
* Creates a new Role object under management of this object.
*
* A set of constraints regarding user creation is imposed:
*
*
* - Can't create a role with name same as any right.
*
*
- If this object's collection already contains an element whose
* name attribute equals the name argument, then
* a GRANTEE_ALREADY_EXISTS or ROLE_ALREADY_EXISTS Trace
* is thrown.
* (This will catch attempts to create Reserved grantee names).
*
*/
public Grantee addRole(HsqlName name) {
if (map.containsKey(name.name)) {
throw Error.error(ErrorCode.X_28503, name.name);
}
if (SqlInvariants.SYSTEM_AUTHORIZATION_NAME.equals(name.name)) {
throw Error.error(ErrorCode.X_28502, name.name);
}
if (SqlInvariants.isLobsSchemaName(name.name)
|| SqlInvariants.isSystemSchemaName(name.name)) {
throw Error.error(ErrorCode.X_28502, name.name);
}
Grantee g = new Grantee(name, this);
g.isRole = true;
map.put(name.name, g);
roleMap.add(name.name, g);
return g;
}
public User addUser(HsqlName name) {
if (map.containsKey(name.name)) {
throw Error.error(ErrorCode.X_28503, name.name);
}
if (SqlInvariants.SYSTEM_AUTHORIZATION_NAME.equals(name.name)) {
throw Error.error(ErrorCode.X_28502, name.name);
}
if (SqlInvariants.isLobsSchemaName(name.name)
|| SqlInvariants.isSystemSchemaName(name.name)) {
throw Error.error(ErrorCode.X_28502, name.name);
}
User g = new User(name, this);
map.put(name.name, g);
return g;
}
/**
* Only used for a recently added user with no dependencies
*/
public void removeNewUser(HsqlName name) {
map.remove(name.name);
}
/**
* Returns true if named Grantee object exists.
* This will return true for reserved Grantees
* SYSTEM_AUTHORIZATION_NAME, ADMIN_ROLE_NAME, PUBLIC_USER_NAME.
*/
boolean isGrantee(String name) {
return map.containsKey(name);
}
public static int getCheckSingleRight(String right) {
int r = getRight(right);
if (r != 0) {
return r;
}
throw Error.error(ErrorCode.X_42581, right);
}
/**
* Translate a string representation or right(s) into its numeric form.
*/
public static int getRight(String right) {
return rightsStringLookup.get(right, 0);
}
public Grantee get(String name) {
return (Grantee) map.get(name);
}
public Collection getGrantees() {
return map.values();
}
public static boolean validRightString(String rightString) {
return getRight(rightString) != 0;
}
public static boolean isImmutable(String name) {
return name.equals(SqlInvariants.SYSTEM_AUTHORIZATION_NAME)
|| name.equals(SqlInvariants.DBA_ADMIN_ROLE_NAME)
|| name.equals(SqlInvariants.SCHEMA_CREATE_ROLE_NAME)
|| name.equals(SqlInvariants.CHANGE_AUTH_ROLE_NAME);
}
public static boolean isReserved(String name) {
return name.equals(SqlInvariants.SYSTEM_AUTHORIZATION_NAME)
|| name.equals(SqlInvariants.DBA_ADMIN_ROLE_NAME)
|| name.equals(SqlInvariants.SCHEMA_CREATE_ROLE_NAME)
|| name.equals(SqlInvariants.CHANGE_AUTH_ROLE_NAME)
|| name.equals(SqlInvariants.PUBLIC_ROLE_NAME);
}
/**
* Attempts to drop a Role with the specified name
* from this object's set.
*
* A successful drop action consists of:
*
*
*
* - removing the Grantee object with the specified name
* from the set.
*
*
*/
public void dropRole(String name) {
if (!isRole(name)) {
throw Error.error(ErrorCode.X_0P000, name);
}
if (GranteeManager.isReserved(name)) {
throw Error.error(ErrorCode.X_42507);
}
removeGrantee(name);
}
public Set getRoleNames() {
return roleMap.keySet();
}
public Collection getRoles() {
return roleMap.values();
}
/**
* Returns Grantee for the named Role
*/
public Grantee getRole(String name) {
Grantee g = (Grantee) roleMap.get(name);
if (g == null) {
throw Error.error(ErrorCode.X_0P000, name);
}
return g;
}
public boolean isRole(String name) {
return roleMap.containsKey(name);
}
public String[] getSQL() {
HsqlArrayList list = new HsqlArrayList();
// roles
Iterator it = getRoles().iterator();
while (it.hasNext()) {
Grantee grantee = (Grantee) it.next();
// built-in role names are not persisted
if (!GranteeManager.isReserved(
grantee.getName().getNameString())) {
list.add(grantee.getSQL());
}
}
// users
it = getGrantees().iterator();
for (; it.hasNext(); ) {
Grantee grantee = (Grantee) it.next();
if (grantee instanceof User) {
if (((User) grantee).isExternalOnly) {
continue;
}
list.add(grantee.getSQL());
if (((User) grantee).isLocalOnly) {
list.add(((User) grantee).getLocalUserSQL());
}
}
}
String[] array = new String[list.size()];
list.toArray(array);
return array;
}
public String[] getRightsSQL() {
HsqlArrayList list = new HsqlArrayList();
Iterator grantees = getGrantees().iterator();
while (grantees.hasNext()) {
Grantee grantee = (Grantee) grantees.next();
String name = grantee.getName().getNameString();
// _SYSTEM user, DBA Role grants not persisted
if (GranteeManager.isImmutable(name)) {
continue;
}
if (grantee instanceof User && ((User) grantee).isExternalOnly) {
continue;
}
HsqlArrayList subList = grantee.getRightsSQL();
list.addAll(subList);
}
String[] array = new String[list.size()];
list.toArray(array);
return array;
}
public void setDigestAlgo(String algo) {
digestAlgo = algo;
}
public String getDigestAlgo() {
return digestAlgo;
}
synchronized MessageDigest getDigester() {
if (digester == null) {
try {
digester = MessageDigest.getInstance(digestAlgo);
} catch (NoSuchAlgorithmException e) {
throw Error.error(ErrorCode.GENERAL_ERROR, e);
}
}
return digester;
}
String digest(String string) throws RuntimeException {
byte[] data;
data = string.getBytes(JavaSystem.CS_ISO_8859_1);
data = getDigester().digest(data);
return StringConverter.byteArrayToHexString(data);
}
}