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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
---
Content-Type: text/plain; name="testmethod.txt"
/* 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:
[LDAP: error code 53 - paged results cookie is invalid or old]
A brief search using Google gave me a peice of C source code for OpenLdap, which is ultimately
the source of the error:
http://www.opensource.apple.com/darwinsource/10.3/OpenLDAP-37/OpenLDAP/servers/slapd/controls.c
A copy of the controls.c is available locally. On occasion the start of the error message says
[LDAP: error code 2..] but the remainder of the message is the same.
*/
public void testLdapPaging() throws Exception
{
try {
//#1 create a naming enumeration to hold the results
NamingEnumeration naming = null;
//#2 set or retreive the size of the page
int pageSize = 2;
//#3 determine what the search base is
String searchBase = "ou=People, dc=jon, dc=illumining, dc=com";
//#4 get the context object
Hashtable hashtable = new Hashtable();
String initCtxFactory = "com.sun.jndi.ldap.LdapCtxFactory";
String host = "ldap://localhost:389";;
String security = "simple";
String dn = "cn=Manager, dc=illumining, dc=com";
String pwd = "secret";
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 = new InitialLdapContext(hashtable, null);
//#5 create the search controls object
SearchControls controls = new SearchControls();
controls.setSearchScope(SearchControls.SUBTREE_SCOPE);
//#6 create the paged results control object
PagedResultsControl prc = new PagedResultsControl(pageSize);
//#7 create the request controls array
Control reqCtls[] = new Control[]{prc};
//#8 set the request controls array on the context
ctx.setRequestControls(reqCtls);
//#9 set what the return attributes will be
String[] returnAttributes = {"uid"};
controls.setReturningAttributes(returnAttributes);
//#10 create an ldap search filter
String ldapSearchFilter = "(&(objectClass=inetOrgPerson)(cn=*hick*))";
//#11 create do while loop variables
int count = 0;
byte[] b = null;
//#12 enter do while loop
do
{
//#13 perform search using search base- search filter and search
naming = ctx.search(searchBase, ldapSearchFilter, controls);
//#14 test if NamingEnumeration does not equal null
if(naming != null)
{
int subcounter = 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
// 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 = (SearchResult)naming.nextElement();
count++;
System.out.println(si.getName());
}
System.out.println(ldapSearchFilter + " returned " + subcounter );
}
else
{
System.out.println(ldapSearchFilter + " did not return any entries.");
}
//#15 check if the response controls are null
Control[] response = ctx.getResponseControls();
if(response != null)
{
b =((PagedResultsResponseControl)response[0]).getCookie();
}
else
{
b = null;
}
if(b != null)
{
//print out cookie info
System.out.println("Got cookie: ");
for(int i = 0; i < b.length; i++)
{
System.out.println("Byte "+i+" = "+ b[i]);
}
//create new PagedResultsControl
prc = new PagedResultsControl(pageSize, b, Control.CRITICAL);
ctx.setRequestControls(new Control[] {prc});
}
}while(b != 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();
}
}
---
Content-Type: text/plain; name="STACK.txt"
FIRST EXAMPLE STACK TRACE AND STDOUT- FAILURE ON AN ATTEMPT TO GET THE SECOND PAGE
uid=Ahab12345678
uid=Abraham12345678
(&(objectClass=inetOrgPerson)(cn=*hick*)) returned 2
Got cookie:
Byte 0 = 22
Byte 1 = -4
Byte 2 = 0
Byte 3 = 0
javax.naming.CommunicationException: [LDAP: error code 2 - paged results cookie is invalid]; remaining name 'ou=People, dc=jon, dc=illumining, dc=com'
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(PartialCompositeDirContext.java:328)
at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(PartialCompositeDirContext.java:313)
at javax.naming.directory.InitialDirContext.search(InitialDirContext.java:238)
at com.illumining.server.persistence.ldap.LdapUserDAO.testLdapPaging(LdapUserDAO.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(DelegatingMethodAccessorImpl.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.java: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=Ahab12345678
uid=Abraham12345678
(&(objectClass=inetOrgPerson)(cn=*hick*)) returned 2
Got cookie:
Byte 0 = 99
Byte 1 = -4
Byte 2 = 0
Byte 3 = 0
uid=Alice12345678
uid=Billy-Bob12345678
(&(objectClass=inetOrgPerson)(cn=*hick*)) returned 2
Got cookie:
Byte 0 = 105
Byte 1 = -4
Byte 2 = 0
Byte 3 = 0
javax.naming.OperationNotSupportedException: [LDAP: error code 53 - paged results cookie is invalid or old]; remaining name 'ou=People, dc=jon, dc=illumining, dc=com'
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(PartialCompositeDirContext.java:328)
at com.sun.jndi.toolkit.ctx.PartialCompositeDirContext.search(PartialCompositeDirContext.java:313)
at javax.naming.directory.InitialDirContext.search(InitialDirContext.java:238)
at com.illumining.server.persistence.ldap.LdapUserDAO.testLdapPaging(LdapUserDAO.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(DelegatingMethodAccessorImpl.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.java:701)
at java.lang.Thread.run(Thread.java:534)
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