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ProcedureAllowedConfig.java
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ProcedureAllowedConfig.java
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/*
* Copyright (c) 2002-2016 "Neo Technology,"
* Network Engine for Objects in Lund AB [http://neotechnology.com]
*
* This file is part of Neo4j.
*
* Neo4j is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
package org.neo4j.kernel.impl.proc;
import java.util.Collections;
import java.util.List;
import java.util.Map;
import java.util.regex.Pattern;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import org.neo4j.kernel.configuration.Config;
import static java.util.Arrays.stream;
public class ProcedureAllowedConfig
{
public static final String PROC_ALLOWED_SETTING_DEFAULT_NAME = "dbms.security.procedures.default_allowed";
public static final String PROC_ALLOWED_SETTING_ROLES = "dbms.security.procedures.roles";
private static final String ROLES_DELIMITER = ",";
private static final String SETTING_DELIMITER = ";";
private static final String MAPPING_DELIMITER = ":";
private final String defaultValue;
private final List<ProcMatcher> matchers;
private ProcedureAllowedConfig()
{
this.defaultValue = "";
this.matchers = Collections.emptyList();
}
public ProcedureAllowedConfig( Config config )
{
Map<String,String> params = config.getParams();
this.defaultValue = params.get( PROC_ALLOWED_SETTING_DEFAULT_NAME );
if ( params.containsKey( PROC_ALLOWED_SETTING_ROLES ) )
{
this.matchers = Stream.of( params.get( PROC_ALLOWED_SETTING_ROLES ).split( SETTING_DELIMITER ) )
.map( procToRoleSpec ->
{
String[] spec = procToRoleSpec.split( MAPPING_DELIMITER );
String[] roles = stream( spec[1].split( ROLES_DELIMITER ) )
.map( String::trim ).toArray( String[]::new );
return new ProcMatcher( spec[0].trim(), roles );
} ).collect( Collectors.toList() );
}
else
{
this.matchers = Collections.emptyList();
}
}
String[] rolesFor( String procedureName )
{
String[] wildCardRoles = matchers.stream().filter( matcher -> matcher.matches( procedureName ) )
.map( ProcMatcher::roles ).reduce( new String[0],
( acc, next ) -> Stream.concat( stream( acc ), stream( next ) ).toArray( String[]::new ) );
if ( wildCardRoles.length > 0 )
{
return wildCardRoles;
}
else
{
return getDefaultValue();
}
}
private String[] getDefaultValue()
{
return defaultValue == null || defaultValue.isEmpty() ? new String[0] : new String[]{defaultValue};
}
static final ProcedureAllowedConfig DEFAULT = new ProcedureAllowedConfig();
private static class ProcMatcher
{
private final Pattern pattern;
private final String[] roles;
private ProcMatcher( String procedurePattern, String[] roles )
{
this.pattern = Pattern.compile( procedurePattern.replaceAll( "\\.", "\\\\." ).replaceAll( "\\*", ".*" ) );
this.roles = roles;
}
boolean matches( String procedureName )
{
return pattern.matcher( procedureName ).matches();
}
String[] roles()
{
return roles;
}
}
}