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ITS#3089

To: openldap-its@OpenLDAP.org
Subject: ITS#3089
From: jon@illumining.com
Date: Sat, 5 Jun 2004 09:54:44 GMT
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Paging bug from 2.2.5 still present in 2.2.11

The Paged Results Control bug that I mentioned for OpenLdap 2.2.5 still
appears to be present IN 2.2.11. I recently upgraded from 2.2.5 to 2.2.11
and ran an old test I had to see if the paged results control stuff now
worked (java code attached). The test failed in the same manner as it had
with 2.2.5.

I wouldnt have posted to the list, except some time ago I seem to remember
someone mentioning that it had been fixed (in 2.2.7 I think). I just thought
I'd let you know the bug is still there, lurking in the shadows and waiting
to strike ;-)

Links that may be relevant:

http://www.openldap.org/its/index.cgi/Contrib?id=2189;expression=paging;usea
rchives=1;statetype=-1
Looks curiously like what I've been experiencing; beyond getting the first
page of results I get errors (LDAP code 2 or 53) stating that the cookie is
invalid or old. LDAP error code 2 always seems to be the error I get the
first time my test method runs (wrapped by a CommunicationException) and
LDAP error code 53 always seems to be generated for all subsequent runs of
the method until the calling program exits.

This looks similar to the problem I've been having:
http://www.openldap.org/its/index.cgi/Incoming?id=3089;selectid=3089;usearch
ives=1;statetype=-1

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	/* Do not remove this test method or these comments until we get =
OpenLdap working with paging.

	   Currently this method will fail at a random point when retreiving a =
number of pages one after
	   the other. The failure is reported in the form of an =
OperationNotSupportedException wrapped around
	   the following Ldap error code:
	  =20
	   [LDAP: error code 53 - paged results cookie is invalid or old]
	  =20
	   A brief search using Google gave me a peice of C source code for =
OpenLdap, which is ultimately
	   the source of the error:
	  =20
	   =
http://www.opensource.apple.com/darwinsource/10.3/OpenLDAP-37/OpenLDAP/se=
rvers/slapd/controls.c
	  =20
	   A copy of the controls.c is available locally. On occasion the start =
of the error message says=20
	   [LDAP: error code 2..] but the remainder of the message is the same.
	*/  =20
	public void testLdapPaging() throws Exception
	{
		try {
		=09
			//#1 create a naming enumeration to hold the results
			NamingEnumeration naming =3D null;
		=09
			//#2 set or retreive the size of the page
			int pageSize =3D 2;
		=09
			//#3 determine what the search base is
			String searchBase =3D "ou=3DPeople, dc=3Djon, dc=3Dillumining, =
dc=3Dcom";
		=09
			//#4 get the context object
			Hashtable hashtable =3D new Hashtable();
			String initCtxFactory =3D "com.sun.jndi.ldap.LdapCtxFactory";
			String host =3D "ldap://localhost:389";;
			String security =3D "simple";
			String dn =3D "cn=3DManager, dc=3Dillumining, dc=3Dcom";
			String pwd =3D "secret";		=09
			hashtable.put(Context.INITIAL_CONTEXT_FACTORY, initCtxFactory);
			hashtable.put(Context.PROVIDER_URL, host);
			hashtable.put(Context.SECURITY_AUTHENTICATION, security);
			hashtable.put(Context.SECURITY_PRINCIPAL, dn);
			hashtable.put(Context.SECURITY_CREDENTIALS, pwd);
			hashtable.put("java.naming.ldap.version", "3");
			InitialLdapContext ctx =3D new InitialLdapContext(hashtable, null);
		=09
			//#5 create the search controls object
			SearchControls controls =3D new SearchControls();
			controls.setSearchScope(SearchControls.SUBTREE_SCOPE);
		=09
			//#6 create the paged results control object
			PagedResultsControl prc =3D new PagedResultsControl(pageSize);
		=09
			//#7 create the request controls array
			Control reqCtls[] =3D new Control[]{prc};
		=09
			//#8 set the request controls array on the context
			ctx.setRequestControls(reqCtls);
		=09
			//#9 set what the return attributes will be
			String[] returnAttributes =3D {"uid"};
			controls.setReturningAttributes(returnAttributes);
		=09
			//#10 create an ldap search filter
			String ldapSearchFilter =3D =
"(&(objectClass=3DinetOrgPerson)(cn=3D*hick*))";
		=09
			//#11 create do while loop variables
			int count =3D 0;
			byte[] b =3D null;
		=09
			//#12 enter do while loop
			do
			{
				//#13 perform search using search base- search filter and search
				naming =3D ctx.search(searchBase, ldapSearchFilter, controls);
			=09
				//#14 test if NamingEnumeration does not equal null
				if(naming !=3D null)
				{
					int subcounter =3D 0;
					// You must iterate through the NamingEnumeration, even if its not =
the one you want-
					// and you want a subsequent page. For some reason if you dont =
iterate through the=20
					// NamingEnumeration a server-side cookie is NOT created, which =
means you cant access
					// the subsequent pages by obtaining a PagedResultsResponseControl =
and getting a cookie
					// from it.
					while(naming.hasMoreElements())
					{
						subcounter++;
						SearchResult si =3D (SearchResult)naming.nextElement();
						count++;
						System.out.println(si.getName());
					}
					System.out.println(ldapSearchFilter + " returned " + subcounter );
				}
				else                   =20
				{
					System.out.println(ldapSearchFilter + " did not return any =
entries.");
				}
			=09
				//#15 check if the response controls are null
				Control[] response =3D ctx.getResponseControls();
				if(response !=3D null)
				{=09
					b =3D((PagedResultsResponseControl)response[0]).getCookie();
				}
				else
				{
					b =3D null;
				}
				if(b !=3D null)
				{
					//print out cookie info
					System.out.println("Got cookie: ");
					for(int i =3D 0; i < b.length; i++)
					{
						System.out.println("Byte "+i+" =3D "+ b[i]);
					}
				=09
					//create new PagedResultsControl
					prc =3D new PagedResultsControl(pageSize, b, Control.CRITICAL);
					ctx.setRequestControls(new Control[] {prc});
				}=09
			=09
			}while(b !=3D null);
			//added this to see if it made any difference
			naming.close();
			ctx.close();
		} catch (NamingException e) {
			e.printStackTrace();
			throw new Exception();
		} catch (IOException e) {
			e.printStackTrace();
			throw new Exception();
		}
	}
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	name="STACK.txt"
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	filename="STACK.txt"

FIRST EXAMPLE STACK TRACE AND STDOUT- FAILURE ON AN ATTEMPT TO GET THE =
SECOND PAGE

uid=3DAhab12345678
uid=3DAbraham12345678
(&(objectClass=3DinetOrgPerson)(cn=3D*hick*)) returned 2
Got cookie:
Byte 0 =3D 22
Byte 1 =3D -4
Byte 2 =3D 0
Byte 3 =3D 0
javax.naming.CommunicationException: [LDAP: error code 2 - paged results =
cookie is invalid]; remaining name 'ou=3DPeople, dc=3Djon, =
dc=3Dillumining, dc=3Dcom'
        at com.sun.jndi.ldap.LdapCtx.mapErrorCode(LdapCtx.java:3036)
        at =
com.sun.jndi.ldap.LdapCtx.processReturnCode(LdapCtx.java:2934)
        at =
com.sun.jndi.ldap.LdapCtx.processReturnCode(LdapCtx.java:2740)
        at com.sun.jndi.ldap.LdapCtx.searchAux(LdapCtx.java:1811)
        at com.sun.jndi.ldap.LdapCtx.c_search(LdapCtx.java:1734)
        at =
com.sun.jndi.toolkit.ctx.ComponentDirContext.p_search(ComponentDirContext=
.java:368)
        at =
com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(PartialComposi=
teDirContext.java:328)
        at =
com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(PartialComposi=
teDirContext.java:313)
        at =
javax.naming.directory.InitialDirContext.search(InitialDirContext.java:23=
8)
        at =
com.illumining.server.persistence.ldap.LdapUserDAO.testLdapPaging(LdapUse=
rDAO.java:1002)
        at com.illumining.server.UserService.test(UserService.java:885)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at =
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java=
:39)
        at =
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI=
mpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at =
sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
        at sun.rmi.transport.Transport$1.run(Transport.java:148)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
        at =
sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
        at =
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.jav=
a:701)
        at java.lang.Thread.run(Thread.java:534)



SECOND EXAMPLE STDOUT AND STACK TRACE BELOW- FAILURE ON AN ATTEMPT TO =
GET THE THIRD PAGE OF RESULTS

uid=3DAhab12345678
uid=3DAbraham12345678
(&(objectClass=3DinetOrgPerson)(cn=3D*hick*)) returned 2
Got cookie:
Byte 0 =3D 99
Byte 1 =3D -4
Byte 2 =3D 0
Byte 3 =3D 0
uid=3DAlice12345678
uid=3DBilly-Bob12345678
(&(objectClass=3DinetOrgPerson)(cn=3D*hick*)) returned 2
Got cookie:
Byte 0 =3D 105
Byte 1 =3D -4
Byte 2 =3D 0
Byte 3 =3D 0
javax.naming.OperationNotSupportedException: [LDAP: error code 53 - =
paged results cookie is invalid or old]; remaining name 'ou=3DPeople, =
dc=3Djon, dc=3Dillumining, dc=3Dcom'
        at com.sun.jndi.ldap.LdapCtx.mapErrorCode(LdapCtx.java:3061)
        at =
com.sun.jndi.ldap.LdapCtx.processReturnCode(LdapCtx.java:2934)
        at =
com.sun.jndi.ldap.LdapCtx.processReturnCode(LdapCtx.java:2740)
        at com.sun.jndi.ldap.LdapCtx.searchAux(LdapCtx.java:1811)
        at com.sun.jndi.ldap.LdapCtx.c_search(LdapCtx.java:1734)
        at =
com.sun.jndi.toolkit.ctx.ComponentDirContext.p_search(ComponentDirContext=
.java:368)
        at =
com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(PartialComposi=
teDirContext.java:328)
        at =
com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(PartialComposi=
teDirContext.java:313)
        at =
javax.naming.directory.InitialDirContext.search(InitialDirContext.java:23=
8)
        at =
com.illumining.server.persistence.ldap.LdapUserDAO.testLdapPaging(LdapUse=
rDAO.java:1002)
        at com.illumining.server.UserService.test(UserService.java:885)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at =
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java=
:39)
        at =
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorI=
mpl.java:25)
        at java.lang.reflect.Method.invoke(Method.java:324)
        at =
sun.rmi.server.UnicastServerRef.dispatch(UnicastServerRef.java:261)
        at sun.rmi.transport.Transport$1.run(Transport.java:148)
        at java.security.AccessController.doPrivileged(Native Method)
        at sun.rmi.transport.Transport.serviceCall(Transport.java:144)
        at =
sun.rmi.transport.tcp.TCPTransport.handleMessages(TCPTransport.java:460)
        at =
sun.rmi.transport.tcp.TCPTransport$ConnectionHandler.run(TCPTransport.jav=
a:701)
        at java.lang.Thread.run(Thread.java:534)
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