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NAME | SYNOPSIS | DESCRIPTION | CONFIGURATION | EXAMPLE | ACCESS CONTROL | WARNING | FILES | SEE ALSO | COLOPHON |
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SLAPD-PERL(5) File Formats Manual SLAPD-PERL(5)
slapd-perl - Perl backend to slapd
ETCDIR/slapd.conf
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
actions:
* 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, ...)
compare
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 follows.
* 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 ModName.pm
filterSearchResults
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.
There is an example Perl module `SampleLDAP' in the
slapd/back-perl/ directory in the OpenLDAP source tree.
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.
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.
ETCDIR/slapd.conf
default slapd configuration file
slapd.conf(5), slapd(8), perl(1).
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
⟨http://www.openldap.org/⟩. If you have a bug report for this
manual page, see ⟨http://www.openldap.org/its/⟩. This page was
obtained from the project's upstream Git repository
⟨https://git.openldap.org/openldap/openldap.git⟩ on 2025-08-11.
(At that time, the date of the most recent commit that was found
in the repository was 2025-08-05.) If you discover any rendering
problems in this HTML version of the page, or you believe there is
a better or more up-to-date source for the page, or you have
corrections or improvements to the information in this COLOPHON
(which is not part of the original manual page), send a mail to
man-pages@man7.org
OpenLDAP LDVERSION RELEASEDATE SLAPD-PERL(5)
Pages that refer to this page: slapd.backends(5)
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HTML rendering created 2025-09-06 by Michael Kerrisk, author of The Linux Programming Interface. For details of in-depth Linux/UNIX system programming training courses that I teach, look here. Hosting by jambit GmbH. |
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