slapd-perl(5) — Linux manual page


SLAPD-PERL(5)                File Formats Manual               SLAPD-PERL(5)

NAME         top

       slapd-perl - Perl backend to slapd

SYNOPSIS         top


DESCRIPTION         top

       The Perl backend to slapd(8) works by embedding a perl(1) interpreter
       into slapd(8).  Any perl database section of the configuration file
       slapd.conf(5) must then specify what Perl module to use.  Slapd then
       creates a new Perl object that handles all the requests for that
       particular instance of the backend.

       You will need to create a method for each one of the following

         * new        # creates a new object,
         * search     # performs the ldap search,
         * compare    # does a compare,
         * modify     # modifies an entry,
         * add        # adds an entry to backend,
         * modrdn     # modifies an entry's rdn,
         * delete     # deletes an ldap entry,
         * config     # module-specific config directives,
         * init       # called after backend is initialized.

       Unless otherwise specified, the methods return the result code which
       will be returned to the client.  Unimplemented actions can just
       return unwillingToPerform (53).

       new    This method is called when the configuration file encounters a
              perlmod line.  The module in that line is then effectively
              `use'd into the perl interpreter, then the new method is
              called to create a new object.  Note that multiple instances
              of that object may be instantiated, as with any perl object.
              The new method receives the class name as argument.

       search This method is called when a search request comes from a
              client.  It arguments are as follows:
                * object reference
                * base DN
                * scope
                * alias dereferencing policy
                * size limit
                * time limit
                * filter string
                * attributes only flag (1 for yes)
                * list of attributes to return (may be empty)

       Return value: (resultcode, ldif-entry, ldif-entry, ...)

              This method is called when a compare request comes from a
              client.  Its arguments are as follows.
                * object reference
                * dn
                * attribute assertion string

       modify This method is called when a modify request comes from a
              client.  Its arguments are as follows.
                * object reference
                * dn
                * a list formatted as follows
                  ({ "ADD" | "DELETE" | "REPLACE" },
                   attributetype, value...)...

       add    This method is called when a add request comes from a client.
              Its arguments are as follows.
                * object reference
                * entry in string format

       modrdn This method is called when a modrdn request comes from a
              client.  Its arguments are as follows.
                * object reference
                * dn
                * new rdn
                * delete old dn flag (1 means yes)

       delete This method is called when a delete request comes from a
              client.  Its arguments are as follows.
                * object reference
                * dn

       config This method is called once for each perlModuleConfig line in
              the slapd.conf(5) configuration file.  Its arguments are as
                * object reference
                * array of arguments on line

       Return value: nonzero if this is not a valid option.

       init   This method is called after backend is initialized.  Its
              argument is as follows.
                * object reference

       Return value: nonzero if initialization failed.


       These slapd.conf options apply to the PERL backend database.  That
       is, they must follow a "database perl" line and come before any
       subsequent "backend" or "database" lines.  Other database options are
       described in the slapd.conf(5) manual page.

       perlModulePath /path/to/libs
              Add the path to the @INC variable.

       perlModule ModName
              `Use' the module name ModName from

              Search results are candidates that need to be filtered (with
              the filter in the search request), rather than search results
              to be returned directly to the client.

       perlModuleConfig <arguments>
              Invoke the module's config method with the given arguments.

EXAMPLE         top

       There is an example Perl module `SampleLDAP' in the slapd/back-perl/
       directory in the OpenLDAP source tree.

ACCESS CONTROL         top

       The perl backend does not honor any of the access control semantics
       described in slapd.access(5); all access control is delegated to the
       underlying PERL scripting.  Only read (=r) access to the entry
       pseudo-attribute and to the other attribute values of the entries
       returned by the search operation is honored, which is performed by
       the frontend.

WARNING         top

       The interface of this backend to the perl module MAY change.  Any
       suggestions would greatly be appreciated.

       Note: in previous versions, any unrecognized lines in the slapd.conf
       file were passed to the perl module's config method. This behavior is
       deprecated (but still allowed for backward compatibility), and the
       perlModuleConfig directive should instead be used to invoke the
       module's config method. This compatibility feature will be removed at
       some future date.

FILES         top

              default slapd configuration file

SEE ALSO         top

       slapd.conf(5), slapd(8), perl(1).

COLOPHON         top

       This page is part of the OpenLDAP (an open source implementation of
       the Lightweight Directory Access Protocol) project.  Information
       about the project can be found at ⟨⟩.  If you
       have a bug report for this manual page, see
       ⟨⟩.  This page was obtained from the
       project's upstream Git repository
       ⟨⟩ on 2020-09-18.  (At
       that time, the date of the most recent commit that was found in the
       repository was 2020-09-18.)  If you discover any rendering problems
       in this HTML version of the page, or you believe there is a better or
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       of the original manual page), send a mail to

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Pages that refer to this page: slapd.backends(5)