slapd-shell(5) — Linux manual page


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

NAME         top

       slapd-shell - Shell backend to slapd

SYNOPSIS         top


DESCRIPTION         top

       The Shell backend to slapd(8) executes external programs to implement
       operations, and is designed to make it easy to tie an existing
       database to the slapd front-end.

       This backend is primarily intended to be used in prototypes.

WARNING         top

       The abandon shell command has been removed since OpenLDAP 2.1.


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

       These options specify the pathname and arguments of the program to
       execute in response to the given LDAP operation.  Each option is
       followed by the input lines that the program receives:

       add <pathname> <argument>...
              msgid: <message id>
              <repeat { "suffix:" <database suffix DN> }>
              <entry in LDIF format>

       bind <pathname> <argument>...
              msgid: <message id>
              <repeat { "suffix:" <database suffix DN> }>
              dn: <DN>
              method: <method number>
              credlen: <length of <credentials>>
              cred: <credentials>

       compare <pathname> <argument>...
              msgid: <message id>
              <repeat { "suffix:" <database suffix DN> }>
              dn: <DN>
              <attribute>: <value>

       delete <pathname> <argument>...
              msgid: <message id>
              <repeat { "suffix:" <database suffix DN> }>
              dn: <DN>

       modify <pathname> <argument>...
              msgid: <message id>
              <repeat { "suffix:" <database suffix DN> }>
              dn: <DN>
              <repeat {
                  <"add"/"delete"/"replace">: <attribute>
                  <repeat { <attribute>: <value> }>

       modrdn <pathname> <argument>...
              msgid: <message id>
              <repeat { "suffix:" <database suffix DN> }>
              dn: <DN>
              newrdn: <new RDN>
              deleteoldrdn: <0 or 1>
              <if new superior is specified: "newSuperior: <DN>">

       search <pathname> <argument>...
              msgid: <message id>
              <repeat { "suffix:" <database suffix DN> }>
              base: <base DN>
              scope: <0-2, see ldap.h>
              deref: <0-3, see ldap.h>
              sizelimit: <size limit>
              timelimit: <time limit>
              filter: <filter>
              attrsonly: <0 or 1>
              attrs: <"all" or space-separated attribute list>

       unbind <pathname> <argument>...
              msgid: <message id>
              <repeat { "suffix:" <database suffix DN> }>
              dn: <bound DN>

       Note that you need only supply configuration lines for those commands
       you want the backend to handle.  Operations for which a command is
       not supplied will be refused with an "unwilling to perform" error.

       The search command should output the entries in LDIF format, each
       entry followed by a blank line, and after these the RESULT below.

       All commands except unbind should then output:
              code: <integer>
              matched: <matched DN>
              info: <text>
       where only the RESULT line is mandatory.  Lines starting with `#' or
       `DEBUG:' are ignored.

ACCESS CONTROL         top

       The shell backend does not honor all ACL semantics as described in
       slapd.access(5).  In general, access to objects is checked by using a
       dummy object that contains only the DN, so access rules that rely on
       the contents of the object are not honored.  In detail:

       The add operation does not require write (=w) access to the children
       pseudo-attribute of the parent entry.

       The bind operation requires auth (=x) access to the entry pseudo-
       attribute of the entry whose identity is being assessed; auth (=x)
       access to the credentials is not checked, but rather delegated to the
       underlying shell script.

       The compare operation requires read (=r) access (FIXME: wouldn't
       compare (=c) be a more appropriate choice?)  to the entry pseudo-
       attribute of the object whose value is being asserted; compare (=c)
       access to the attribute whose value is being asserted is not checked.

       The delete operation does not require write (=w) access to the
       children pseudo-attribute of the parent entry.

       The modify operation requires write (=w) access to the entry pseudo-
       attribute; write (=w) access to the specific attributes that are
       modified is not checked.

       The modrdn operation does not require write (=w) access to the
       children pseudo-attribute of the parent entry, nor to that of the new
       parent, if different; write (=w) access to the distinguished values
       of the naming attributes is not checked.

       The search operation does not require search (=s) access to the entry
       pseudo_attribute of the searchBase; search (=s) access to the
       attributes and values used in the filter is not checked.

EXAMPLE         top

       There is an example search script in the slapd/back-shell/ directory
       in the OpenLDAP source tree.

LIMITATIONS         top

       The shell backend does not support threaded environments.  When using
       the shell backend, slapd(8) should be built --without-threads.

FILES         top

              default slapd configuration file

SEE ALSO         top

       slapd.conf(5), slapd(8), sh(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
       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

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