org.codehaus.plexus.archiver.util.FilePermissionUtils Maven / Gradle / Ivy
/*
* 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.codehaus.plexus.archiver.util;
import java.util.ArrayList;
import java.util.List;
import org.codehaus.plexus.logging.Logger;
import org.codehaus.plexus.util.StringUtils;
/**
* @author Olivier Lamy
* @since 1.0.1
*/
public class FilePermissionUtils
{
private FilePermissionUtils()
{
// no op
}
/**
* @param mode file mode "a la" unix ie 664, 440, etc
*
* @return FilePermission associated to the mode (group permission are ignored here)
*/
public static FilePermission getFilePermissionFromMode( String mode, Logger logger )
{
if ( StringUtils.isBlank( mode ) )
{
throw new IllegalArgumentException( " file mode cannot be empty" );
}
// 4 characters works on some unix (ie solaris)
if ( mode.length() != 3 && mode.length() != 4 )
{
throw new IllegalArgumentException( " file mode must be 3 or 4 characters" );
}
List modes = new ArrayList( mode.length() );
for ( int i = 0, size = mode.length(); i < size; i++ )
{
modes.add( String.valueOf( mode.charAt( i ) ) );
}
boolean executable = false, ownerOnlyExecutable = true, ownerOnlyReadable = true, readable = false,
ownerOnlyWritable = true, writable = false;
// handle user perm
try
{
int userMode = Integer.valueOf( modes.get( mode.length() == 4 ? 1 : 0 ) );
switch ( userMode )
{
case 0:
break;
case 1:
executable = true;
break;
case 2:
writable = true;
break;
case 3:
writable = true;
executable = true;
break;
case 4:
readable = true;
break;
case 5:
readable = true;
executable = true;
break;
case 6:
readable = true;
writable = true;
break;
case 7:
writable = true;
readable = true;
executable = true;
break;
default:
logger.warn( "ignore file mode " + userMode );
}
}
catch ( NumberFormatException e )
{
throw new IllegalArgumentException( " file mode must contains only number " + mode );
}
// handle all perm
try
{
int allMode = Integer.valueOf( modes.get( mode.length() == 4 ? 3 : 2 ) );
switch ( allMode )
{
case 0:
break;
case 1:
executable = true;
ownerOnlyExecutable = false;
break;
case 2:
writable = true;
ownerOnlyWritable = false;
break;
case 3:
writable = true;
executable = true;
ownerOnlyExecutable = false;
ownerOnlyWritable = false;
break;
case 4:
readable = true;
ownerOnlyReadable = false;
break;
case 5:
readable = true;
executable = true;
ownerOnlyReadable = false;
ownerOnlyExecutable = false;
break;
case 6:
readable = true;
ownerOnlyReadable = false;
writable = true;
ownerOnlyWritable = false;
break;
case 7:
writable = true;
readable = true;
executable = true;
ownerOnlyReadable = false;
ownerOnlyExecutable = false;
ownerOnlyWritable = false;
break;
default:
logger.warn( "ignore file mode " + allMode );
}
}
catch ( NumberFormatException e )
{
throw new IllegalArgumentException( " file mode must contains only number " + mode );
}
return new FilePermission( executable, ownerOnlyExecutable, ownerOnlyReadable, readable, ownerOnlyWritable,
writable );
}
}