spring security PasswordPolicyControlExtractor 源码
spring security PasswordPolicyControlExtractor 代码
文件路径：/ldap/src/main/java/org/springframework/security/ldap/ppolicy/PasswordPolicyControlExtractor.java
/*
* Copyright 2002-2016 the original author or authors.
*
* Licensed 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
*
* https://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.springframework.security.ldap.ppolicy;
import javax.naming.directory.DirContext;
import javax.naming.ldap.Control;
import javax.naming.ldap.LdapContext;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
/**
* Obtains the <tt>PasswordPolicyControl</tt> from a context for use by other classes.
*
* @author Luke Taylor
* @since 3.0
*/
public final class PasswordPolicyControlExtractor {
private static final Log logger = LogFactory.getLog(PasswordPolicyControlExtractor.class);
private PasswordPolicyControlExtractor() {
}
public static PasswordPolicyResponseControl extractControl(DirContext dirCtx) {
LdapContext ctx = (LdapContext) dirCtx;
Control[] ctrls = null;
try {
ctrls = ctx.getResponseControls();
}
catch (javax.naming.NamingException ex) {
logger.trace("Failed to obtain response controls", ex);
}
for (int i = 0; ctrls != null && i < ctrls.length; i++) {
if (ctrls[i] instanceof PasswordPolicyResponseControl) {
return (PasswordPolicyResponseControl) ctrls[i];
}
}
return null;
}
}
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