When MQAUSX first supported LDAP authentication, Capitalware used Novell’s LDAP Libraries for C for AIX, HP-UX, Solaris, Linux x86, Linux x64 (x86 64-bit) and Windows. Several years ago, for AIX, HP-UX and Solaris platforms, we switched to the native/included client LDAP libraries that are available for each OS (Operating System).
This week, a weird bug was discovered in the native/included OpenLDAP Client on Linux for zSeries. OpenLDAP has deprecated ldap_init() function in favor of ldap_initialize() function. Even though ldap_init() function is still supported by OpenLDAP, the client LDAP library crashes when it is used on Linux for zSeries. Therefore, I am going to switch the ldap call from ldap_init() to ldap_initialize() on all platforms that use OpenLDAP.
MQAUSX LDAP is supported on 4 Linux distributions: x86, x64, Power and zSeries. But of course there are always wrinkles: MQAUSX LDAP uses 2 different LDAP clients on the various Linux distributions.
- Linux x86 and Linux x64 use Novell’s LDAP Libraries for C
- Linux on Power and Linux on zSeries use the native/included OpenLDAP
So, to be consistent on all Linux distributions, MQAUSX LDAP will only use OpenLDAP in all future releases.
So, what does this mean for customers?
- Starting with v1.5.2.7, MQAUSX will no longer include Novell’s LDAP Libraries for Linux x86 or Linux x64
- If you wish to use MQAUSX LDAP (v1.5.2.7 or higher) on Linux x86 or Linux x64 then the “openldap-clients” package must be installed on your Linux server. There is a high probability that this package is already installed on your Linux server. A quick way to check is to issue the following Linux command:
rpm -q -a | grep -i ldap
Please let me know if you have any questions or comments.
Regards,
Roger Lacroix
Capitalware Inc.
