AIX Version 4.3 Differences Guide

11.4.2 ODBC
11.4.3 RDB Glue
11.4.4 SLAPD
This includes ODBC Driver Manager and the DB2 (ODBC) Driver. The ODBC
Driver Manager provides the ODBC API to the LDAP directory server. The DB2
driver plugs into the ODBC framework and connects with the DB2 interfaces.
Both of these components of ODBC are provided with the single-user version of
DB2 that is shipped with the AIX Stand-alone LDAP Directory product.
The Relational DataBase (RDB) Glue code ties together two architected
interfaces to provide the data store for the directory. The SLAPD component
handles incoming LDAP requests and generates calls to a set of APIs defined as
the SLAPI interface. The RDB Glue provides a matching set of routines that plug
into this API, take the previously mentioned API calls and generate SQL
statements in the form required by the ODBC interface to read or write
information to DB2.
SLAPD is the portion of the directory server that understands LDAP. It is a
multithreaded daemon that receives client requests, works with the DB2
back-end to process them, and returns the results.
11.4.5 Server Replication
SLAPD process threads also monitor the replication log file and pass the
corresponding update requests on to the replica server(s).
No shutdown of LDAP server is necessary to copy directory data to initialize a
replica server. The process of setting up a replica server involves the following
steps:
• Put the master directory into read-only mode.
• Create a backup of the directory contents.
• Use the backup file to populate the replica directory.
• Update the master directory configuration with all the information about the
replica server.
• Dynamically reconfigure the master directory server (SLAPD) to pick up the
new configuration.
• Take the master out of read-only mode (back to read-write).
11.4.6 HTTP Access to Directory
An HTTP gateway is provided to allow web browsers that are not LDAP-enabled
to do searches on the directory. The gateway is a cgi-bin program that presents a
form to the user, through the browser, to gather the parameters for the search
(such as a search base, scope, search filter, and so on). Once the search
information has been passed to the gateway program, it acts as an LDAP client,
generating the requests to do the search, then receiving the results and passing
them back to the browser for display to the end-user.
11.5 Security
The AIX Stand-alone LDAP client and server implementation supports SSL
(Version 2.0 or higher), an emerging standard for World Wide Web security. SSL
AIX Stand-Alone LDAP Directory Product 299