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...t/trino-client/src/main/java/io/trino/client/auth/kerberos/LoginBasedSubjectProvider.java
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,112 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
| package io.trino.client.auth.kerberos; | ||
|
|
||
| import com.google.common.collect.ImmutableMap; | ||
| import com.sun.security.auth.module.Krb5LoginModule; | ||
| import org.ietf.jgss.GSSException; | ||
|
|
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| import javax.annotation.concurrent.GuardedBy; | ||
| import javax.security.auth.Subject; | ||
| import javax.security.auth.login.AppConfigurationEntry; | ||
| import javax.security.auth.login.Configuration; | ||
| import javax.security.auth.login.LoginContext; | ||
| import javax.security.auth.login.LoginException; | ||
|
|
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| import java.io.File; | ||
| import java.util.Objects; | ||
| import java.util.Optional; | ||
|
|
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| import static com.google.common.base.Preconditions.checkState; | ||
| import static java.lang.Boolean.getBoolean; | ||
| import static java.util.Objects.requireNonNull; | ||
| import static javax.security.auth.login.AppConfigurationEntry.LoginModuleControlFlag.REQUIRED; | ||
|
|
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| public class LoginBasedSubjectProvider | ||
| implements SubjectProvider | ||
| { | ||
| private final Optional<String> principal; | ||
| private final Optional<File> keytab; | ||
| private final Optional<File> credentialCache; | ||
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| @GuardedBy("this") | ||
| private LoginContext loginContext; | ||
|
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| public LoginBasedSubjectProvider( | ||
| Optional<String> principal, | ||
| Optional<File> kerberosConfig, | ||
| Optional<File> keytab, | ||
| Optional<File> credentialCache) | ||
| { | ||
| this.principal = requireNonNull(principal, "principal is null"); | ||
| this.keytab = requireNonNull(keytab, "keytab is null"); | ||
| this.credentialCache = requireNonNull(credentialCache, "credentialCache is null"); | ||
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| kerberosConfig.ifPresent(file -> { | ||
| String newValue = file.getAbsolutePath(); | ||
| String currentValue = System.getProperty("java.security.krb5.conf"); | ||
| checkState( | ||
| currentValue == null || Objects.equals(currentValue, newValue), | ||
| "Refusing to set system property 'java.security.krb5.conf' to '%s', it is already set to '%s'", | ||
| newValue, | ||
| currentValue); | ||
| System.setProperty("java.security.krb5.conf", newValue); | ||
| }); | ||
| } | ||
|
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| @Override | ||
| public Subject getSubject() | ||
| { | ||
| return loginContext.getSubject(); | ||
| } | ||
|
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| @Override | ||
| public void refresh() | ||
| throws LoginException, GSSException | ||
| { | ||
| // TODO: do we need to call logout() on the LoginContext? | ||
|
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| loginContext = new LoginContext("", null, null, new Configuration() | ||
| { | ||
| @Override | ||
| public AppConfigurationEntry[] getAppConfigurationEntry(String name) | ||
| { | ||
| ImmutableMap.Builder<String, String> options = ImmutableMap.builder(); | ||
| options.put("refreshKrb5Config", "true"); | ||
| options.put("doNotPrompt", "true"); | ||
| options.put("useKeyTab", "true"); | ||
|
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| if (getBoolean("trino.client.debugKerberos")) { | ||
| options.put("debug", "true"); | ||
| } | ||
|
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| keytab.ifPresent(file -> options.put("keyTab", file.getAbsolutePath())); | ||
|
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| credentialCache.ifPresent(file -> { | ||
| options.put("ticketCache", file.getAbsolutePath()); | ||
| options.put("useTicketCache", "true"); | ||
| options.put("renewTGT", "true"); | ||
| }); | ||
|
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| principal.ifPresent(value -> options.put("principal", value)); | ||
|
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| return new AppConfigurationEntry[] { | ||
| new AppConfigurationEntry(Krb5LoginModule.class.getName(), REQUIRED, options.build()) | ||
| }; | ||
| } | ||
| }); | ||
|
|
||
| loginContext.login(); | ||
| } | ||
| } |
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27 changes: 27 additions & 0 deletions
27
client/trino-client/src/main/java/io/trino/client/auth/kerberos/SubjectProvider.java
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,27 @@ | ||
| /* | ||
| * 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. | ||
| */ | ||
| package io.trino.client.auth.kerberos; | ||
|
|
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| import org.ietf.jgss.GSSException; | ||
|
|
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| import javax.security.auth.Subject; | ||
| import javax.security.auth.login.LoginException; | ||
|
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| public interface SubjectProvider | ||
| { | ||
| Subject getSubject(); | ||
|
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| void refresh() | ||
| throws LoginException, GSSException; | ||
| } |