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95 lines
3.6 KiB
Plaintext
95 lines
3.6 KiB
Plaintext
This directory contains a slapd overlay, smbk5pwd, that extends the
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PasswordModify Extended Operation to update Kerberos keys and Samba
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password hashes for an LDAP user.
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The Kerberos support is written for Heimdal using its hdb-ldap backend.
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If a PasswordModify is performed on an entry that has the krb5KDCEntry
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objectclass, then the krb5Key and krb5KeyVersionNumber will be updated
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using the new password in the PasswordModify request. Additionally, a
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new "{K5KEY}" password hash mechanism is provided. For krb5KDCEntries that
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have this hash specifier in their userPassword attribute, Simple Binds
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will be checked against the Kerberos keys of the Entry. No data is
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needed after the "{K5KEY}" hash specifier in the userPassword, it is
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looked up from the Entry directly.
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The Samba support is written using the Samba 3.0 LDAP schema. If a
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PasswordModify is performed on an entry that has the sambaSamAccount
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objectclass, then the sambaLMPassword, sambaNTPassword, and sambaPwdLastSet
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attributes will be updated accordingly.
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To use the overlay, add:
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include <path to>/krb5-kdc.schema
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include <path to>/samba.schema
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moduleload <path to>smbk5pwd.so
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...
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database bdb
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...
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overlay smbk5pwd
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to your slapd configuration file. (You should obtain the necessary schema
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files from the Heimdal and/or Samba distributions. At this time, there
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are several known errors in these schema files that you will have to
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correct before they will load in slapd. As of Samba 3.0 the schema looks
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fine as shipped.)
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All modules compiled in (i.e. krb5 and samba) are enabled; the statement
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smbk5pwd-enable <module>
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can be used to enable only the desired one(s); legal values for <module>
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are "krb5", "samba" and "shadow", if they are respectively enabled by defining
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DO_KRB5, DO_SAMBA and DO_SHADOW.
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The samba module also supports the
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smbk5pwd-must-change <seconds>
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which sets the "sambaPwdMustChange" attribute accordingly to force passwd
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expiry. A value of 0 disables this feature.
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The overlay now supports table-driven configuration, and thus can be run-time
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loaded and configured via back-config. The layout of the entry is
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# {0}smbk5pwd, {1}bdb, config
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dn: olcOverlay={0}smbk5pwd,olcDatabase={1}bdb,cn=config
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objectClass: olcOverlayConfig
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objectClass: olcSmbK5PwdConfig
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olcOverlay: {0}smbk5pwd
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olcSmbK5PwdEnable: krb5
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olcSmbK5PwdEnable: samba
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olcSmbK5PwdMustChange: 2592000
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which enables both krb5 and samba modules with a password expiry time
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of 30 days.
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The provided Makefile builds both Kerberos and Samba support by default.
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You must edit the Makefile to insure that the correct include and library
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paths are used. You can change the DEFS macro if you only want one or the
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other of Kerberos or Samba support.
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This overlay is only set up to be built as a dynamically loaded module.
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On most platforms, in order for the module to be usable, all of the
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library dependencies must also be available as shared libraries.
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If you need to build the overlay statically, you will have to move it into the
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slapd/overlays directory and edit the Makefile and overlays.c to reference
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it. You will also have to define SLAPD_OVER_SMBK5PWD to SLAPD_MOD_STATIC,
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and add the relevant libraries to the main slapd link command.
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---
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This work is part of OpenLDAP Software <http://www.openldap.org/>.
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Copyright 2004-2011 The OpenLDAP Foundation.
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Portions Copyright 2004-2005 Howard Chu, Symas Corp. All rights reserved.
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Redistribution and use in source and binary forms, with or without
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modification, are permitted only as authorized by the OpenLDAP
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Public License.
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A copy of this license is available in the file LICENSE in the
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top-level directory of the distribution or, alternatively, at
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<http://www.OpenLDAP.org/license.html>.
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