Re: (ITS#5092) page size value of 1.2.840.113556.1.4.319 control

[ando@sys-net.it]

> randolf.werner@sap.com wrote:
>> Full_Name: Randolf Werner
>> Version: 2.3.35
>> OS: Windows XP
>> URL: ftp://ftp.openldap.org/incoming/
>> Submission from: (NULL) (155.56.68.221)
>>
>>
>> Hi,
>> i just have found the following compatibilty issue when using the
>> 1.2.840.113556.1.4.319 control (http://www.ietf.org/rfc/rfc2696.txt)
>> supported
>> by slapd. According to Microsoft and IBM LDAP API
>> ldap_create_page_control
>>
>> http://msdn2.microsoft.com/en-us/library/aa366547.aspx
>> http://publib.boulder.ibm.com/infocenter/iseries/v5r3/index.jsp?topic=/apis/ldap_create_page_control.htm
>>
>> the page size parameter should be an 32 Bit unsigned integer, however
>> the RFC
>> specifies it as "(INTEGER (0..maxInt)". Therefore our LDAP client uses
>> 2**32-1
>> as default page size value. This works fine with Microsoft Active
>> Directroy for
>> many years but fails with "Protocol Error" (Error 2) when using slapd.
>> Our
>> workaround is to use 2**31-1 as default value in our client. I am not
>> sure which
>> implementation is correct, anyway it is a compatibility issue for ldap
>> clients
>> and might be "fixed" to improve compatibility.
>
> I suggest you file bug reports with Microsoft and IBM to fix their broken
> implementations then. RFC4511 clearly defines maxInt to be 2^31-1. That
> value
> has not changed since RFC2251 either.

Or, fix your clients so that they don't use pagedResults when not
necessary.  2**31-1 is a pretty large number.

p.



Ing. Pierangelo Masarati
OpenLDAP Core Team

SysNet s.r.l.
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