hadoop JaasConfiguration 源码
haddop JaasConfiguration 代码
文件路径：/hadoop-common-project/hadoop-auth/src/main/java/org/apache/hadoop/security/authentication/util/JaasConfiguration.java
/**
* 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
*
* 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. See accompanying LICENSE file.
*/
package org.apache.hadoop.security.authentication.util;
import java.util.HashMap;
import java.util.Map;
import javax.security.auth.login.AppConfigurationEntry;
import javax.security.auth.login.Configuration;
/**
* Creates a programmatic version of a jaas.conf file. This can be used
* instead of writing a jaas.conf file and setting the system property,
* "java.security.auth.login.config", to point to that file. It is meant to be
* used for connecting to ZooKeeper.
*/
public class JaasConfiguration extends Configuration {
private final javax.security.auth.login.Configuration baseConfig =
javax.security.auth.login.Configuration.getConfiguration();
private final AppConfigurationEntry[] entry;
private final String entryName;
/**
* Add an entry to the jaas configuration with the passed in name,
* principal, and keytab. The other necessary options will be set for you.
*
* @param entryName The name of the entry (e.g. "Client")
* @param principal The principal of the user
* @param keytab The location of the keytab
*/
public JaasConfiguration(String entryName, String principal, String keytab) {
this.entryName = entryName;
Map<String, String> options = new HashMap<>();
options.put("keyTab", keytab);
options.put("principal", principal);
options.put("useKeyTab", "true");
options.put("storeKey", "true");
options.put("useTicketCache", "false");
options.put("refreshKrb5Config", "true");
String jaasEnvVar = System.getenv("HADOOP_JAAS_DEBUG");
if ("true".equalsIgnoreCase(jaasEnvVar)) {
options.put("debug", "true");
}
entry = new AppConfigurationEntry[]{
new AppConfigurationEntry(getKrb5LoginModuleName(),
AppConfigurationEntry.LoginModuleControlFlag.REQUIRED,
options)};
}
@Override
public AppConfigurationEntry[] getAppConfigurationEntry(String name) {
return (entryName.equals(name)) ? entry : ((baseConfig != null)
? baseConfig.getAppConfigurationEntry(name) : null);
}
private String getKrb5LoginModuleName() {
String krb5LoginModuleName;
if (System.getProperty("java.vendor").contains("IBM")) {
krb5LoginModuleName = "com.ibm.security.auth.module.Krb5LoginModule";
} else {
krb5LoginModuleName = "com.sun.security.auth.module.Krb5LoginModule";
}
return krb5LoginModuleName;
}
}
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