[ 
https://issues.apache.org/jira/browse/HIVE-25575?focusedWorklogId=739017&page=com.atlassian.jira.plugin.system.issuetabpanels:worklog-tabpanel#worklog-739017
 ]

ASF GitHub Bot logged work on HIVE-25575:
-----------------------------------------

                Author: ASF GitHub Bot
            Created on: 09/Mar/22 18:36
            Start Date: 09/Mar/22 18:36
    Worklog Time Spent: 10m 
      Work Description: hsnusonic commented on a change in pull request #3006:
URL: https://github.com/apache/hive/pull/3006#discussion_r822963751



##########
File path: service/src/java/org/apache/hive/service/auth/jwt/JWTValidator.java
##########
@@ -0,0 +1,110 @@
+/*
+ * 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.apache.hive.service.auth.jwt;
+
+import com.google.common.base.Preconditions;
+import com.nimbusds.jose.JOSEException;
+import com.nimbusds.jose.JWSHeader;
+import com.nimbusds.jose.JWSObject;
+import com.nimbusds.jose.JWSVerifier;
+import com.nimbusds.jose.KeyTypeException;
+import com.nimbusds.jose.crypto.ECDSAVerifier;
+import com.nimbusds.jose.crypto.MACVerifier;
+import com.nimbusds.jose.crypto.RSASSAVerifier;
+import com.nimbusds.jose.jwk.JWK;
+import com.nimbusds.jose.jwk.RSAKey;
+import com.nimbusds.jwt.JWTClaimsSet;
+import com.nimbusds.jwt.SignedJWT;
+import org.apache.hadoop.hive.conf.HiveConf;
+
+import javax.crypto.SecretKey;
+import java.io.IOException;
+import java.security.interfaces.ECPublicKey;
+import java.security.interfaces.RSAPublicKey;
+import java.text.ParseException;
+import java.util.Date;
+import java.util.List;
+
+public class JWTValidator {
+
+  private final URLBasedJWKSProvider jwksProvider;
+
+  public JWTValidator(HiveConf conf) throws IOException, ParseException {
+    this.jwksProvider = new URLBasedJWKSProvider(conf);
+  }
+
+  public String validateJWTAndExtractUser(String signedJwt) throws Exception {
+    final SignedJWT parsedJwt = SignedJWT.parse(signedJwt);
+    List<JWK> matchedJWKS = jwksProvider.getJWKs(parsedJwt.getHeader());
+
+    // verify signature
+    boolean signatureVerificationSuccessful = false;
+    for (JWK matchedJWK : matchedJWKS) {
+      JWSVerifier verifier = getVerifier(parsedJwt, matchedJWK);
+      if (parsedJwt.verify(verifier)) {
+        signatureVerificationSuccessful = true;
+        break;
+      }
+    }
+    Preconditions.checkState(signatureVerificationSuccessful, "Unable to 
verify incoming JWT Signature");
+
+    // verify claims
+    JWTClaimsSet claimsSet = parsedJwt.getJWTClaimsSet();
+    Date expirationTime = claimsSet.getExpirationTime();
+    if (expirationTime != null) {
+      Date now = new Date();
+      Preconditions.checkState(now.before(expirationTime), "JWT has been 
expired");
+    }
+
+    // We assume the subject of claims is the query user
+    return claimsSet.getSubject();
+  }
+
+
+
+  // TODO Same logic as DefaultJWSVerifierFactory#createJWSVerifier -- This 
can be written more elegantly, check AGAIN
+  private static JWSVerifier getVerifier(JWSObject parsedJWT, JWK key) throws 
JOSEException {

Review comment:
       I rewrote the logic of `getVerifier` because I found some bugs of 
incompatible class casting. We need this function because we need to pass 
correct arguments into `DefaultJWSVerifierFatory.createJWSVerifier`.




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Issue Time Tracking
-------------------

    Worklog Id:     (was: 739017)
    Time Spent: 2h 50m  (was: 2h 40m)

> Add support for JWT authentication in HTTP mode
> -----------------------------------------------
>
>                 Key: HIVE-25575
>                 URL: https://issues.apache.org/jira/browse/HIVE-25575
>             Project: Hive
>          Issue Type: New Feature
>          Components: HiveServer2, JDBC
>    Affects Versions: 4.0.0
>            Reporter: Shubham Chaurasia
>            Assignee: Yu-Wen Lai
>            Priority: Major
>              Labels: pull-request-available
>          Time Spent: 2h 50m
>  Remaining Estimate: 0h
>
> It would be good to support JWT auth mechanism in hive. In order to implement 
> it, we would need the following - 
> On HS2 side -
> 1. Accept JWT in Authorization: Bearer header.
> 2. Fetch JWKS from a public endpoint to verify JWT signature, to start with 
> we can fetch on HS2 start up.
> 3. Verify JWT Signature.
> On JDBC Client side - 
> 1. Hive jdbc client should be able to accept jwt in JDBC url. (will add more 
> details)
> 2. Client should also be able to pick up JWT from an env var if it's defined.



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