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Subject: svn commit: r1176184 - in
 /hadoop/common/branches/branch-0.20-security-205:
 CHANGES.txt src/hdfs/org/apache/hadoop/hdfs/server/namenode/JspHelper.java
Date: Tue, 27 Sep 2011 02:59:45 -0000
To: common-commits@hadoop.apache.org
From: jitendra@apache.org
Message-Id: <20110927025946.26CAB2388847@eris.apache.org>

Author: jitendra
Date: Tue Sep 27 02:59:45 2011
New Revision: 1176184

URL: http://svn.apache.org/viewvc?rev=1176184&view=rev
Log:
Merged r1176182 from branch-0.20-security for HDFS-2361.

Modified:
    hadoop/common/branches/branch-0.20-security-205/CHANGES.txt   (contents, props changed)
    hadoop/common/branches/branch-0.20-security-205/src/hdfs/org/apache/hadoop/hdfs/server/namenode/JspHelper.java

Modified: hadoop/common/branches/branch-0.20-security-205/CHANGES.txt
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-security-205/CHANGES.txt?rev=1176184&r1=1176183&r2=1176184&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20-security-205/CHANGES.txt (original)
+++ hadoop/common/branches/branch-0.20-security-205/CHANGES.txt Tue Sep 27 02:59:45 2011
@@ -220,6 +220,8 @@ Release 0.20.205.0 - 2011.09.12
     HDFS-2366. Initialize WebHdfsFileSystem.ugi in object construction.
     (szetszwo)
 
+    HDFS-2361. hftp is broken. Fixed username checks in JspHelper. (jitendra)
+
   IMPROVEMENTS
 
     MAPREDUCE-2928. MR-2413 improvements (Eli Collins via mattf)

Propchange: hadoop/common/branches/branch-0.20-security-205/CHANGES.txt
------------------------------------------------------------------------------
--- svn:mergeinfo (original)
+++ svn:mergeinfo Tue Sep 27 02:59:45 2011
@@ -1,6 +1,6 @@
 /hadoop/common/branches/branch-0.20/CHANGES.txt:826138,826568,829987,831184,833001,880632,898713,909245,909723,960946,990003,1044225
 /hadoop/common/branches/branch-0.20-append/CHANGES.txt:955380,955398,955448,956329
-/hadoop/common/branches/branch-0.20-security/CHANGES.txt:1170042,1170087,1170997,1171137,1171181,1171380,1171613,1171891,1171905,1172184,1172188,1172190,1172192,1173470,1173843,1174326,1174471,1174476,1174482,1175114,1176179
+/hadoop/common/branches/branch-0.20-security/CHANGES.txt:1170042,1170087,1170997,1171137,1171181,1171380,1171613,1171891,1171905,1172184,1172188,1172190,1172192,1173470,1173843,1174326,1174471,1174476,1174482,1175114,1176179,1176182
 /hadoop/common/branches/branch-0.20-security-203/CHANGES.txt:1096071,1097011,1097249,1097269,1097281,1097966,1098816,1098819,1098823,1098827,1098832,1098839,1098854,1098863,1099088,1099191,1099324,1099330,1099333,1102071,1128115
 /hadoop/common/branches/branch-0.20-security-204/CHANGES.txt:1128390,1147228,1148069,1149316,1154413,1159730,1161741
 /hadoop/core/branches/branch-0.18/CHANGES.txt:727226

Modified: hadoop/common/branches/branch-0.20-security-205/src/hdfs/org/apache/hadoop/hdfs/server/namenode/JspHelper.java
URL: http://svn.apache.org/viewvc/hadoop/common/branches/branch-0.20-security-205/src/hdfs/org/apache/hadoop/hdfs/server/namenode/JspHelper.java?rev=1176184&r1=1176183&r2=1176184&view=diff
==============================================================================
--- hadoop/common/branches/branch-0.20-security-205/src/hdfs/org/apache/hadoop/hdfs/server/namenode/JspHelper.java (original)
+++ hadoop/common/branches/branch-0.20-security-205/src/hdfs/org/apache/hadoop/hdfs/server/namenode/JspHelper.java Tue Sep 27 02:59:45 2011
@@ -53,6 +53,7 @@ import org.apache.hadoop.hdfs.web.resour
 import org.apache.hadoop.http.HtmlQuoting;
 import org.apache.hadoop.net.NetUtils;
 import org.apache.hadoop.security.AccessControlException;
+import org.apache.hadoop.security.KerberosName;
 import org.apache.hadoop.security.SecurityUtil;
 import org.apache.hadoop.security.UserGroupInformation;
 import org.apache.hadoop.security.UserGroupInformation.AuthenticationMethod;
@@ -464,7 +465,8 @@ public class JspHelper {
         DelegationTokenIdentifier id = new DelegationTokenIdentifier();
         id.readFields(in);
         ugi = id.getUser();
-        checkUsername(ugi.getUserName(), user);
+        checkUsername(ugi.getShortUserName(), usernameFromQuery);
+        checkUsername(ugi.getShortUserName(), user);
         ugi.addToken(token);        
         ugi.setAuthenticationMethod(AuthenticationMethod.TOKEN);
       } else {
@@ -473,13 +475,11 @@ public class JspHelper {
                                 "authenticated by filter");
         }
         ugi = UserGroupInformation.createRemoteUser(user);
+        checkUsername(ugi.getShortUserName(), usernameFromQuery);
         // This is not necessarily true, could have been auth'ed by user-facing
         // filter
         ugi.setAuthenticationMethod(secureAuthMethod);
       }
-
-      checkUsername(user, usernameFromQuery);
-
     } else { // Security's not on, pull from url
       ugi = usernameFromQuery == null?
           getDefaultWebUser(conf) // not specified in request
@@ -492,10 +492,18 @@ public class JspHelper {
     return ugi;
   }
 
+  /**
+   * Expected user name should be a short name.
+   */
   private static void checkUsername(final String expected, final String name
       ) throws IOException {
-    if (name != null && !name.equals(expected)) {
-      throw new IOException("Usernames not matched: name=" + name
+    if (name == null) {
+      return;
+    }
+    KerberosName u = new KerberosName(name);
+    String shortName = u.getShortName();
+    if (!shortName.equals(expected)) {
+      throw new IOException("Usernames not matched: name=" + shortName
           + " != expected=" + expected);
     }
   }