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FilePasswordProvider.java
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FilePasswordProvider.java
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/*
* Copyright 2009 Glencoe Software, Inc. All rights reserved.
* Use is subject to license terms supplied in LICENSE.txt
*/
package ome.security.auth;
import java.io.File;
import java.io.FileInputStream;
import java.util.Properties;
import ome.util.Utils;
import org.springframework.util.Assert;
/**
* Example password provider which uses the given file as password lookup. All
* entries in the file are of the form: username=password, where password is in
* whatever encoding is configured for the {@link PasswordProvider provider}.
* Changing passwords is not supported.
*
* @author Josh Moore, josh at glencoesoftware.com
* @since 4.0
*/
public class FilePasswordProvider extends ConfigurablePasswordProvider {
/**
* Flat file read on each invocation with name, value pairs in Java
* {@link java.util.Properties} notation.
*/
final protected File file;
public FilePasswordProvider(PasswordUtil util, File file) {
super(util);
this.file = file;
Assert.notNull(file);
}
public FilePasswordProvider(PasswordUtil util, File file, boolean ignoreUnknown) {
super(util, ignoreUnknown);
this.file = file;
Assert.notNull(file);
}
@Override
public boolean hasPassword(String user) {
Properties p = getProperties();
return p.containsKey(user);
}
@Override
public Boolean checkPassword(String user, String password, boolean readOnly) {
Properties p = getProperties();
return loginAttempt(user, doCheckPassword(user, password, p, readOnly));
}
protected Boolean doCheckPassword(String user, String password, Properties p, boolean readOnly) {
if (!p.containsKey(user)) {
// Do the default on unknown
return super.checkPassword(user, password, readOnly);
} else {
String currentPassword = p.getProperty(user);
return comparePasswords(currentPassword, password);
}
}
protected Properties getProperties() {
Properties p = new Properties();
FileInputStream fis = null;
try {
fis = new FileInputStream(file);
p.load(fis);
return p;
} catch (Exception e) {
throw new RuntimeException("Could not read file: " + file);
} finally {
Utils.closeQuietly(fis);
}
}
}