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  1. JDK
  2. JDK-4892070

java gets hung in com.sun.jndi.ldap.LdapName$TypeAndValue.unescapeValue()

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    Details

    • Type: Bug
    • Status: Resolved
    • Priority: P4
    • Resolution: Fixed
    • Affects Version/s: 1.3.1_01, 1.4.2_06
    • Fix Version/s: 5.0
    • Component/s: core-libs
    • Subcomponent:
    • Resolved In Build:
      tiger
    • CPU:
      generic, x86
    • OS:
      windows_2000

      Description


      Java 1.3.1_08 process gets hung in
      com.sun.jndi.ldap.LdapName$TypeAndValue.unescapeValue(LdapName.java:833),
      when "\" escape sequences are used.
      Processor load is up to 100%.

      The problem is supposed to be nearly strictly reproducible.


      1. Testcase
      -----------
       Please note, the testcase requires an iPlanet Directory Server Installation
       in order to supply LDAP user info.
       Customer used iPlanet DS 5.1 SP 1 20020606 (Build 2002.161.2231)
       (Administration Server 5.1 (Build 2002.158.2342)), running on Win2k Advanced
        SP3).

       The testcase consist of the following files:

      -rw-r--r-- 1 tl15687 sun 3131 Jul 17 13:08 SearchTest.java
      -rw-r--r-- 1 tl15687 sun 947 Jul 17 13:09 u0146220.ldif


      % more SearchTest.java
      /*
       * Created on 16.07.2003
       */
       
      //package com.sap.security.test;

      import java.util.Hashtable;

      import javax.naming.*;
      import javax.naming.directory.*;
      /**
       * @author D037363
       */
      public class SearchTest {

        static int timelimit = 50000;
        static int sizelimit = 2000;
        static String baseDN= "cn=test\\u0146220";
        static String user = "cn=Directory Manager";
          //please adjust to your settings
        static String password = "<your password>";
        static String providerURL =
           "ldap://&lt;your directory server>:389/ou=usermapping,ou=portal_ldap,dc=um.wdf.sap.corp";

        public static void main(String[] args) {

          InitialDirContext ctx = openContext();

          SearchControls searchControls = new SearchControls();
          searchControls.setTimeLimit(timelimit);
          searchControls.setCountLimit(sizelimit);
          searchControls.setSearchScope(SearchControls.SUBTREE_SCOPE);
          searchControls.setReturningObjFlag(true);
          searchControls.setDerefLinkFlag(false);

          //searchControls.setReturningAttributes(new String[] {"wpproperty"});

          try {

            //NamingEnumeration answers = ctx.search(baseDN,"(&(objectclass=WPNamespace))", searchControls);
            NamingEnumeration answers =
               ctx.search(baseDN,"(&(objectclass=applicationmap))",
                          searchControls);

            // set data bag

            while(answers.hasMore()) {
             // get the entry from the search

             /** this is the statement where the thread never returns !!! */
              SearchResult sr = (SearchResult) answers.next();

              Attributes attrs = sr.getAttributes();
              // if there is no mapping read the attributes by physical name

              NamingEnumeration ae = attrs.getAll();
              while (ae.hasMore()) {
                Attribute oneAttribute = (Attribute)ae.next();
                // get attribute name
                String currentAttribute = oneAttribute.getID();
                if (oneAttribute != null) {
                  NamingEnumeration allValues = oneAttribute.getAll();
                  while (allValues.hasMore()) {
                    System.out.println(
                      currentAttribute+" = "+(String) allValues.next());
                  }
                }
              }//end while
            }
          }catch (NoInitialContextException e) {
             String logMessage =
                "ADAPTER: Test JNDI NoInitialContext Exception when "
                 +"reading subcontext. System Msg: " + e;
             System.out.println(logMessage);
        
          }catch(CommunicationException e) {
             String logMessage =
                "ADAPTER: Test JNDI Communication Exception when reading "
                +"subcontext. System Msg: " + e;
             System.out.println(logMessage);

          }catch (NamingException e) {
             System.out.println(
                "Adapter: Test JNDI Exception getting attributes, DN:"
                 +baseDN+" System Msg: ");
          }
        }

        public static InitialDirContext openContext () {
          Hashtable env = new Hashtable();
              
          env.put(Context.INITIAL_CONTEXT_FACTORY,
                  "com.sun.jndi.ldap.LdapCtxFactory");
          env.put(Context.SECURITY_AUTHENTICATION, "simple");
          env.put(Context.SECURITY_PRINCIPAL, user);
          env.put(Context.SECURITY_CREDENTIALS, password);
          env.put(Context.PROVIDER_URL, providerURL);
          InitialDirContext ctx = null;
          try {
            ctx = new InitialDirContext(env);
          } catch (Exception e) {
            System.out.println("exception when trying to open connection "
                               +e.getMessage());
          }

          return ctx;
        }
      }

      %

      % more u0146220.ldif
      dn: uid=de-dus-mgh-m-02\u0146220, ou=People, dc=prod, dc=magis.mgi.de
      uid: de-dus-mgh-m-02\u0146220
      uid: de-dus-mgh-m-02u0146220
      objectClass: top
      objectClass: person
      objectClass: organizationalPerson
      objectClass: inetorgperson
      givenName: Dirk
      sn: Winkler
      cn: Dirk Winkler

      dn: cn=de-dus-mgh-m-02\u0146220, ou=UserMapping, dc=prod, dc=magis.mgi.de
      uid: UGM_de-dus-mgh-m-02\u0146220
      objectClass: usergroupmap
      objectClass: top
      cn: de-dus-mgh-m-02\u0146220
      cn: de-dus-mgh-m-02u0146220

      dn: cn=de-dus-mgh-m-02\u0146220, ou=customattributes, dc=prod, dc=magis.mgi.d
       e
      objectClass: wpuser
      objectClass: top
      cn: de-dus-mgh-m-02\u0146220
      cn: de-dus-mgh-m-02u0146220

      dn: cn=com.sapportals.portal.security.usermanagement, cn=de-dus-mgh-m-02\u014
       6220, ou=customattributes, dc=prod, dc=magis.mgi.de
      objectClass: wpnamespace
      objectClass: top
      wpproperty: accessibilitylevel:0
      cn: com.sapportals.portal.security.usermanagement

      %



      2. Thread Dump
      --------------

       Java Thread dump shows the following characteristic threads:
       (This information was taken from a process running in SAP Portal environment.)


      "Client_Thread_31" prio=5 tid=0x44c84cd8 nid=0x840 waiting for monitor entry [0x
      4731f000..0x4731fdbc]
              at java.lang.String.<init>(String.java:364)
              at java.lang.String.<init>(String.java:406)
              at java.lang.String.<init>(String.java:427)
              at com.sun.jndi.ldap.LdapName$TypeAndValue.unescapeValue(LdapName.java:8
      33)
              at com.sun.jndi.ldap.LdapName$TypeAndValue.getValueComparable(LdapName.j
      ava:714)
              at com.sun.jndi.ldap.LdapName$TypeAndValue.compareTo(LdapName.java:676)
              at com.sun.jndi.ldap.LdapName$Rdn.compareTo(LdapName.java:616)
              at com.sun.jndi.ldap.LdapName$Rdn.equals(LdapName.java:605)
              at com.sun.jndi.ldap.LdapName.matches(LdapName.java:245)
              at com.sun.jndi.ldap.LdapName.startsWith(LdapName.java:195)
      [...]
      "Client_Thread_30" prio=5 tid=0x44c83e80 nid=0x6c4 waiting for monitor entry [0x
      472df000..0x472dfdbc]
              at java.lang.String.<init>(String.java:364)
              at java.lang.String.<init>(String.java:406)
              at java.lang.String.<init>(String.java:427)
              at com.sun.jndi.ldap.LdapName$TypeAndValue.unescapeValue(LdapName.java:8
      33)
              at com.sun.jndi.ldap.LdapName$TypeAndValue.getValueComparable(LdapName.j
      ava:714)
              at com.sun.jndi.ldap.LdapName$TypeAndValue.compareTo(LdapName.java:676)
              at com.sun.jndi.ldap.LdapName$Rdn.compareTo(LdapName.java:616)
              at com.sun.jndi.ldap.LdapName$Rdn.equals(LdapName.java:605)
              at com.sun.jndi.ldap.LdapName.matches(LdapName.java:245)
              at com.sun.jndi.ldap.LdapName.startsWith(LdapName.java:195)
              at com.sun.jndi.ldap.LdapSearchEnumeration.createItem(LdapSearchEnumerat
      ion.java:52)
      [...]
      "Client_Thread_28" prio=5 tid=0x44c82920 nid=0x8e4 waiting for monitor entry [0x
      4725e000..0x4725fdbc]
              at sun.io.ByteToCharUTF8.convert(ByteToCharUTF8.java:45)
              at java.lang.String.<init>(String.java:367)
              at java.lang.String.<init>(String.java:406)
              at java.lang.String.<init>(String.java:427)
              at com.sun.jndi.ldap.LdapName$TypeAndValue.unescapeValue(LdapName.java:8
      33)
              at com.sun.jndi.ldap.LdapName$TypeAndValue.getValueComparable(LdapName.j
      ava:714)
              at com.sun.jndi.ldap.LdapName$TypeAndValue.compareTo(LdapName.java:676)
              at com.sun.jndi.ldap.LdapName$Rdn.compareTo(LdapName.java:616)
              at com.sun.jndi.ldap.LdapName$Rdn.equals(LdapName.java:605)
              at com.sun.jndi.ldap.LdapName.matches(LdapName.java:245)
              at com.sun.jndi.ldap.LdapName.startsWith(LdapName.java:195)
      [...]

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              Assignee:
              jhangalsunw Jayalaxmi Hangal (Inactive)
              Reporter:
              thlenz Thomas Lenz (Inactive)
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