[patch] Patch to add module

openldap-smbk5pwd.patch (text/plain), 18.94 KB, created by Matthew Schick on 2005-12-19 08:00:43 UTC

diff -N -r -u contrib/slapd-modules/smbk5pwd/Makefile contrib/slapd-modules/smbk5pwd/Makefile
--- contrib/slapd-modules/smbk5pwd/Makefile	1969-12-31 18:00:00.000000000 -0600
+++ contrib/slapd-modules/smbk5pwd/Makefile	2004-04-02 05:06:38.000000000 -0600
@@ -0,0 +1,35 @@
+# $OpenLDAP: pkg/ldap/contrib/slapd-modules/smbk5pwd/Makefile,v 1.1 2004/04/02 11:06:38 hyc Exp $
+# Copyright 2004 Howard Chu, Symas Corp. All Rights Reserved.
+#
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted only as authorized by the OpenLDAP
+# Public License.
+#
+# A copy of this license is available in the file LICENSE in the
+# top-level directory of the distribution or, alternatively, at
+# <http://www.OpenLDAP.org/license.html>.
+
+LIBTOOL=../../../libtool
+OPT=-g -O2
+CC=gcc
+
+
+HEIMDAL_INC=-I/usr/include/heimdal
+SSL_INC=
+LDAP_INC=-I../../../include -I../../../servers/slapd
+INCS=$(LDAP_INC) $(HEIMDAL_INC) $(SSL_INC)
+
+HEIMDAL_LIB=-L/usr/lib -lkrb5 -lkadm5srv
+SSL_LIB=-lcrypto
+LDAP_LIB=-lldap_r -llber
+LIBS=$(LDAP_LIB) $(HEIMDAL_LIB) $(SSL_LIB)
+
+all:	smbk5pwd.la
+
+
+smbk5pwd.lo:	smbk5pwd.c
+	$(LIBTOOL) --mode=compile $(CC) $(OPT) $(DEFS) $(INCS) -c $?
+
+smbk5pwd.la:	smbk5pwd.lo
+	$(LIBTOOL) --mode=link $(CC) $(OPT) -version-info 0:0:0 \
+	-rpath /usr/local/libexec/openldap -module -o $@ $? $(LIBS)
diff -N -r -u contrib/slapd-modules/smbk5pwd/README contrib/slapd-modules/smbk5pwd/README
--- contrib/slapd-modules/smbk5pwd/README	1969-12-31 18:00:00.000000000 -0600
+++ contrib/slapd-modules/smbk5pwd/README	2005-07-09 23:36:39.000000000 -0500
@@ -0,0 +1,59 @@
+Copyright 2004-2005 Howard Chu, Symas Corp. All rights reserved.
+
+Redistribution and use in source and binary forms, with or without
+modification, are permitted only as authorized by the OpenLDAP
+Public License.
+
+A copy of this license is available in the file LICENSE in the
+top-level directory of the distribution or, alternatively, at
+<http://www.OpenLDAP.org/license.html>.
+
+This directory contains a slapd overlay, smbk5pwd, that extends the
+PasswordModify Extended Operation to update Kerberos keys and Samba
+password hashes for an LDAP user.
+
+The Kerberos support is written for Heimdal using its hdb-ldap backend.
+If a PasswordModify is performed on an entry that has the krb5KDCEntry
+objectclass, then the krb5Key and krb5KeyVersionNumber will be updated
+using the new password in the PasswordModify request. Additionally, a
+new "{K5KEY}" password hash mechanism is provided. For krb5KDCEntries that
+have this hash specifier in their userPassword attribute, Simple Binds
+will be checked against the Kerberos keys of the Entry. No data is
+needed after the "{K5KEY}" hash specifier in the userPassword, it is
+looked up from the Entry directly.
+
+The Samba support is written using the Samba 3.0 LDAP schema. If a
+PasswordModify is performed on an entry that has the sambaSamAccount
+objectclass, then the sambaLMPassword, sambaNTPassword, and sambaPwdLastSet
+attributes will be updated accordingly.
+
+To use the overlay, add:
+
+	include <path to>/krb5-kdc.schema
+	include <path to>/samba.schema
+
+	moduleload <path to>smbk5pwd.so
+	...
+
+	database bdb
+	...
+	overlay smbk5pwd
+
+to your slapd configuration file. (You should obtain the necessary schema
+files from the Heimdal and/or Samba distributions. At this time, there
+are several known errors in these schema files that you will have to
+correct before they will load in slapd.)
+
+The provided Makefile builds both Kerberos and Samba support by default.
+You must edit the Makefile to insure that the correct include and library
+paths are used. You can change the DEFS macro if you only want one or the
+other of Kerberos or Samba support.
+
+This overlay is only set up to be built as a dynamically loaded module.
+On most platforms, in order for the module to be usable, all of the 
+library dependencies must also be available as shared libraries.
+
+If you need to build the overlay statically, you will have to move it into the
+slapd/overlays directory and edit the Makefile and overlays.c to reference
+it. You will also have to define SLAPD_OVER_SMBK5PWD to SLAPD_MOD_STATIC,
+and add the relevant libraries to the main slapd link command.
diff -N -r -u contrib/slapd-modules/smbk5pwd/smbk5pwd.c contrib/slapd-modules/smbk5pwd/smbk5pwd.c
--- contrib/slapd-modules/smbk5pwd/smbk5pwd.c	1969-12-31 18:00:00.000000000 -0600
+++ contrib/slapd-modules/smbk5pwd/smbk5pwd.c	2005-08-12 10:25:19.000000000 -0500
@@ -0,0 +1,574 @@
+/* smbk5pwd.c - Overlay for managing Samba and Heimdal passwords */
+/* $OpenLDAP: pkg/ldap/contrib/slapd-modules/smbk5pwd/smbk5pwd.c,v 1.1.2.5 2005/08/12 15:25:19 kurt Exp $ */
+/*
+ * Copyright 2004-2005 by Howard Chu, Symas Corp.
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted only as authorized by the OpenLDAP
+ * Public License.
+ *
+ * A copy of this license is available in the file LICENSE in the
+ * top-level directory of the distribution or, alternatively, at
+ * <http://www.OpenLDAP.org/license.html>.
+ */
+
+#include <portable.h>
+
+#ifndef SLAPD_OVER_SMBK5PWD
+#define SLAPD_OVER_SMBK5PWD SLAPD_MOD_DYNAMIC
+#endif
+
+#ifdef SLAPD_OVER_SMBK5PWD
+
+#include <slap.h>
+#include <ac/errno.h>
+
+#ifdef DO_KRB5
+#include <ac/string.h>
+#include <lber.h>
+#include <lber_pvt.h>
+#include <lutil.h>
+
+/* make ASN1_MALLOC_ENCODE use our allocator */
+#define malloc	ch_malloc
+
+#include <krb5.h>
+#include <kadm5/admin.h>
+#include <hdb.h>
+
+#ifndef HDB_INTERFACE_VERSION
+#define	HDB_MASTER_KEY_SET	master_key_set
+#else
+#define	HDB_MASTER_KEY_SET	hdb_master_key_set
+#endif
+
+static krb5_context context;
+static void *kadm_context;
+static kadm5_config_params conf;
+static HDB *db;
+
+static AttributeDescription *ad_krb5Key;
+static AttributeDescription *ad_krb5KeyVersionNumber;
+static AttributeDescription *ad_krb5PrincipalName;
+static ObjectClass *oc_krb5KDCEntry;
+#endif
+
+#ifdef DO_SAMBA
+#include <openssl/des.h>
+#include <openssl/md4.h>
+
+static AttributeDescription *ad_sambaLMPassword;
+static AttributeDescription *ad_sambaNTPassword;
+static AttributeDescription *ad_sambaPwdLastSet;
+static ObjectClass *oc_sambaSamAccount;
+#endif
+
+#if 0
+static void smbk5pwd_destroy() {
+	kadm5_destroy(kadm_context);
+	krb5_free_context(context);
+}
+#endif
+
+#ifdef DO_SAMBA
+static const char hex[] = "0123456789abcdef";
+
+/* From liblutil/passwd.c... */
+static void lmPasswd_to_key(
+	const char *lmPasswd,
+	des_cblock *key)
+{
+	const unsigned char *lpw = (const unsigned char *)lmPasswd;
+	unsigned char *k = (unsigned char *)key;
+
+	/* make room for parity bits */
+	k[0] = lpw[0];
+	k[1] = ((lpw[0]&0x01)<<7) | (lpw[1]>>1);
+	k[2] = ((lpw[1]&0x03)<<6) | (lpw[2]>>2);
+	k[3] = ((lpw[2]&0x07)<<5) | (lpw[3]>>3);
+	k[4] = ((lpw[3]&0x0F)<<4) | (lpw[4]>>4);
+	k[5] = ((lpw[4]&0x1F)<<3) | (lpw[5]>>5);
+	k[6] = ((lpw[5]&0x3F)<<2) | (lpw[6]>>6);
+	k[7] = ((lpw[6]&0x7F)<<1);
+
+	des_set_odd_parity( key );
+}
+
+#define MAX_PWLEN 256
+#define	HASHLEN	16
+
+static void hexify(
+	const char in[HASHLEN],
+	struct berval *out
+)
+{
+	int i;
+	char *a;
+	unsigned char *b;
+
+	out->bv_val = ch_malloc(HASHLEN*2 + 1);
+	out->bv_len = HASHLEN*2;
+
+	a = out->bv_val;
+	b = (unsigned char *)in;
+	for (i=0; i<HASHLEN; i++) {
+		*a++ = hex[*b >> 4];
+		*a++ = hex[*b++ & 0x0f];
+	}
+	*a++ = '\0';
+}
+
+static void lmhash(
+	struct berval *passwd,
+	struct berval *hash
+)
+{
+	char UcasePassword[15];
+	des_cblock key;
+	des_key_schedule schedule;
+	des_cblock StdText = "KGS!@#$%";
+	des_cblock hbuf[2];
+
+	strncpy( UcasePassword, passwd->bv_val, 14 );
+	UcasePassword[14] = '\0';
+	ldap_pvt_str2upper( UcasePassword );
+
+	lmPasswd_to_key( UcasePassword, &key );
+	des_set_key_unchecked( &key, schedule );
+	des_ecb_encrypt( &StdText, &hbuf[0], schedule , DES_ENCRYPT );
+
+	lmPasswd_to_key( &UcasePassword[7], &key );
+	des_set_key_unchecked( &key, schedule );
+	des_ecb_encrypt( &StdText, &hbuf[1], schedule , DES_ENCRYPT );
+
+	hexify( (char *)hbuf, hash );
+}
+
+static void nthash(
+	struct berval *passwd,
+	struct berval *hash
+)
+{
+	/* Windows currently only allows 14 character passwords, but
+	 * may support up to 256 in the future. We assume this means
+	 * 256 UCS2 characters, not 256 bytes...
+	 */
+	char hbuf[HASHLEN];
+	int i;
+	MD4_CTX ctx;
+
+	if (passwd->bv_len > MAX_PWLEN*2)
+		passwd->bv_len = MAX_PWLEN*2;
+		
+	MD4_Init( &ctx );
+	MD4_Update( &ctx, passwd->bv_val, passwd->bv_len );
+	MD4_Final( (unsigned char *)hbuf, &ctx );
+
+	hexify( hbuf, hash );
+}
+#endif /* DO_SAMBA */
+
+#ifdef DO_KRB5
+
+static int smbk5pwd_op_cleanup(
+	Operation *op,
+	SlapReply *rs )
+{
+	slap_callback *cb;
+
+	/* clear out the current key */
+	ldap_pvt_thread_pool_setkey( op->o_threadctx, smbk5pwd_op_cleanup,
+		NULL, NULL );
+
+	/* free the callback */
+	cb = op->o_callback;
+	op->o_callback = cb->sc_next;
+	op->o_tmpfree( cb, op->o_tmpmemctx );
+	return 0;
+}
+
+static int smbk5pwd_op_bind(
+	Operation *op,
+	SlapReply *rs )
+{
+	/* If this is a simple Bind, stash the Op pointer so our chk
+	 * function can find it. Set a cleanup callback to clear it
+	 * out when the Bind completes.
+	 */
+	if ( op->oq_bind.rb_method == LDAP_AUTH_SIMPLE ) {
+		slap_callback *cb;
+		ldap_pvt_thread_pool_setkey( op->o_threadctx, smbk5pwd_op_cleanup, op,
+			NULL );
+		cb = op->o_tmpcalloc( 1, sizeof(slap_callback), op->o_tmpmemctx );
+		cb->sc_cleanup = smbk5pwd_op_cleanup;
+		cb->sc_next = op->o_callback;
+		op->o_callback = cb;
+	}
+	return SLAP_CB_CONTINUE;
+}
+
+static LUTIL_PASSWD_CHK_FUNC k5key_chk;
+static LUTIL_PASSWD_HASH_FUNC k5key_hash;
+static const struct berval k5key_scheme = BER_BVC("{K5KEY}");
+
+/* This password scheme stores no data in the userPassword attribute
+ * other than the scheme name. It assumes the invoking entry is a
+ * krb5KDCentry and compares the passed-in credentials against the
+ * krb5Key attribute. The krb5Key may be multi-valued, but they are
+ * simply multiple keytypes generated from the same input string, so
+ * only the first value needs to be compared here.
+ *
+ * Since the lutil_passwd API doesn't pass the Entry object in, we
+ * have to fetch it ourselves in order to get access to the other
+ * attributes. We accomplish this with the help of the overlay's Bind
+ * function, which stores the current Operation pointer in thread-specific
+ * storage so we can retrieve it here. The Operation provides all
+ * the necessary context for us to get Entry from the database.
+ */
+static int k5key_chk(
+	const struct berval *sc,
+	const struct berval *passwd,
+	const struct berval *cred,
+	const char **text )
+{
+	void *ctx;
+	Operation *op;
+	int rc;
+	Entry *e;
+	Attribute *a;
+    krb5_error_code ret;
+    krb5_keyblock key;
+    krb5_salt salt;
+	hdb_entry ent;
+
+	/* Find our thread context, find our Operation */
+	ctx = ldap_pvt_thread_pool_context();
+
+	if ( ldap_pvt_thread_pool_getkey( ctx, smbk5pwd_op_cleanup, (void **)&op, NULL ) ||
+		!op )
+		return LUTIL_PASSWD_ERR;
+
+	rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
+	if ( rc != LDAP_SUCCESS ) return LUTIL_PASSWD_ERR;
+
+	rc = LUTIL_PASSWD_ERR;
+	do {
+		size_t l;
+		Key ekey = {0};
+
+		a = attr_find( e->e_attrs, ad_krb5PrincipalName );
+		if (!a ) break;
+
+		memset( &ent, 0, sizeof(ent) );
+		ret = krb5_parse_name(context, a->a_vals[0].bv_val, &ent.principal);
+		if ( ret ) break;
+		krb5_get_pw_salt( context, ent.principal, &salt );
+		krb5_free_principal( context, ent.principal );
+
+		a = attr_find( e->e_attrs, ad_krb5Key );
+		if ( !a ) break;
+
+		ent.keys.len = 1;
+		ent.keys.val = &ekey;
+		decode_Key((unsigned char *) a->a_vals[0].bv_val,
+			(size_t) a->a_vals[0].bv_len, &ent.keys.val[0], &l);
+		if ( db->HDB_MASTER_KEY_SET )
+			hdb_unseal_keys( context, db, &ent );
+
+		krb5_string_to_key_salt( context, ekey.key.keytype, cred->bv_val,
+			salt, &key );
+
+		krb5_free_salt( context, salt );
+
+		if ( memcmp( ekey.key.keyvalue.data, key.keyvalue.data,
+			key.keyvalue.length ) == 0 ) rc = LUTIL_PASSWD_OK;
+
+		krb5_free_keyblock_contents( context, &key );
+		krb5_free_keyblock_contents( context, &ekey.key );
+
+	} while(0);
+	be_entry_release_r( op, e );
+	return rc;
+}
+
+static int k5key_hash(
+	const struct berval *scheme,
+	const struct berval *passwd,
+	struct berval *hash,
+	const char **text )
+{
+	ber_dupbv( hash, (struct berval *)&k5key_scheme );
+	return LUTIL_PASSWD_OK;
+}
+#endif /* DO_KRB5 */
+
+static int smbk5pwd_exop_passwd(
+	Operation *op,
+	SlapReply *rs )
+{
+	int i, rc;
+	req_pwdexop_s *qpw = &op->oq_pwdexop;
+	Entry *e;
+	Attribute *a;
+	Modifications *ml;
+	slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
+
+	/* Not the operation we expected, pass it on... */
+	if ( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->ore_reqoid ) ) {
+		return SLAP_CB_CONTINUE;
+	}
+
+	op->o_bd->bd_info = (BackendInfo *)on->on_info;
+	rc = be_entry_get_rw( op, &op->o_req_ndn, NULL, NULL, 0, &e );
+	if ( rc != LDAP_SUCCESS ) return rc;
+
+#ifdef DO_KRB5
+	/* Kerberos stuff */
+	do {
+		krb5_error_code ret;
+		hdb_entry ent;
+		struct berval *keys;
+		int kvno;
+
+		if ( !is_entry_objectclass(e, oc_krb5KDCEntry, 0 ) ) break;
+
+		a = attr_find( e->e_attrs, ad_krb5PrincipalName );
+		if ( !a ) break;
+
+		memset( &ent, 0, sizeof(ent) );
+		ret = krb5_parse_name(context, a->a_vals[0].bv_val, &ent.principal);
+		if ( ret ) break;
+
+		a = attr_find( e->e_attrs, ad_krb5KeyVersionNumber );
+		if ( a ) {
+			kvno = atoi(a->a_vals[0].bv_val);
+		} else {
+			/* shouldn't happen, this is a required attr */
+			kvno = 0;
+		}
+
+		ret = _kadm5_set_keys(kadm_context, &ent, qpw->rs_new.bv_val);
+		hdb_seal_keys(context, db, &ent);
+		krb5_free_principal( context, ent.principal );
+
+		keys = ch_malloc( (ent.keys.len + 1) * sizeof(struct berval));
+
+		for (i = 0; i < ent.keys.len; i++) {
+			unsigned char *buf;
+			size_t len;
+
+			ASN1_MALLOC_ENCODE(Key, buf, len, &ent.keys.val[i], &len, ret);
+			if (ret != 0)
+				break;
+			
+			keys[i].bv_val = (char *)buf;
+			keys[i].bv_len = len;
+		}
+		keys[i].bv_val = NULL;
+		keys[i].bv_len = 0;
+
+		_kadm5_free_keys(kadm_context, ent.keys.len, ent.keys.val);
+
+		if ( i != ent.keys.len ) {
+			ber_bvarray_free( keys );
+			break;
+		}
+
+		ml = ch_malloc(sizeof(Modifications));
+		if (!qpw->rs_modtail) qpw->rs_modtail = &ml->sml_next;
+		ml->sml_next = qpw->rs_mods;
+		qpw->rs_mods = ml;
+
+		ml->sml_desc = ad_krb5Key;
+		ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+		ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+		ml->sml_values = keys;
+		ml->sml_nvalues = NULL;
+		
+		ml = ch_malloc(sizeof(Modifications));
+		ml->sml_next = qpw->rs_mods;
+		qpw->rs_mods = ml;
+		
+		ml->sml_desc = ad_krb5KeyVersionNumber;
+		ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+		ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+		ml->sml_values = ch_malloc( 2 * sizeof(struct berval));
+		ml->sml_values[0].bv_val = ch_malloc( 64 );
+		ml->sml_values[0].bv_len = sprintf(ml->sml_values[0].bv_val,
+			"%d", kvno+1 );
+		ml->sml_values[1].bv_val = NULL;
+		ml->sml_values[1].bv_len = 0;
+		ml->sml_nvalues = NULL;
+	} while(0);
+#endif /* DO_KRB5 */
+
+#ifdef DO_SAMBA
+	/* Samba stuff */
+	if ( is_entry_objectclass(e, oc_sambaSamAccount, 0 ) ) {
+		struct berval *keys;
+		ber_len_t j,l;
+		wchar_t *wcs, wc;
+		char *c, *d;
+		struct berval pwd;
+		
+		/* Expand incoming UTF8 string to UCS4 */
+		l = ldap_utf8_chars(qpw->rs_new.bv_val);
+		wcs = ch_malloc((l+1) * sizeof(wchar_t));
+
+		ldap_x_utf8s_to_wcs( wcs, qpw->rs_new.bv_val, l );
+		
+		/* Truncate UCS4 to UCS2 */
+		c = (char *)wcs;
+		for (j=0; j<l; j++) {
+			wc = wcs[j];
+			*c++ = wc & 0xff;
+			*c++ = (wc >> 8) & 0xff;
+		}
+		*c++ = 0;
+		pwd.bv_val = (char *)wcs;
+		pwd.bv_len = l * 2;
+
+		ml = ch_malloc(sizeof(Modifications));
+		if (!qpw->rs_modtail) qpw->rs_modtail = &ml->sml_next;
+		ml->sml_next = qpw->rs_mods;
+		qpw->rs_mods = ml;
+
+		keys = ch_malloc( 2 * sizeof(struct berval) );
+		keys[1].bv_val = NULL;
+		keys[1].bv_len = 0;
+		nthash( &pwd, keys );
+		
+		ml->sml_desc = ad_sambaNTPassword;
+		ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+		ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+		ml->sml_values = keys;
+		ml->sml_nvalues = NULL;
+
+		/* Truncate UCS2 to 8-bit ASCII */
+		c = pwd.bv_val+1;
+		d = pwd.bv_val+2;
+		for (j=1; j<l; j++) {
+			*c++ = *d++;
+			d++;
+		}
+		pwd.bv_len /= 2;
+		pwd.bv_val[pwd.bv_len] = '\0';
+
+		ml = ch_malloc(sizeof(Modifications));
+		ml->sml_next = qpw->rs_mods;
+		qpw->rs_mods = ml;
+
+		keys = ch_malloc( 2 * sizeof(struct berval) );
+		keys[1].bv_val = NULL;
+		keys[1].bv_len = 0;
+		lmhash( &pwd, keys );
+		
+		ml->sml_desc = ad_sambaLMPassword;
+		ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+		ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+		ml->sml_values = keys;
+		ml->sml_nvalues = NULL;
+
+		ch_free(wcs);
+
+		ml = ch_malloc(sizeof(Modifications));
+		ml->sml_next = qpw->rs_mods;
+		qpw->rs_mods = ml;
+
+		keys = ch_malloc( 2 * sizeof(struct berval) );
+		keys[1].bv_val = NULL;
+		keys[1].bv_len = 0;
+		keys[0].bv_val = ch_malloc(16);
+		keys[0].bv_len = sprintf(keys[0].bv_val, "%d",
+			slap_get_time());
+		
+		ml->sml_desc = ad_sambaPwdLastSet;
+		ml->sml_op = LDAP_MOD_REPLACE;
+#ifdef SLAP_MOD_INTERNAL
+		ml->sml_flags = SLAP_MOD_INTERNAL;
+#endif
+		ml->sml_values = keys;
+		ml->sml_nvalues = NULL;
+	}
+#endif /* DO_SAMBA */
+	be_entry_release_r( op, e );
+
+	return SLAP_CB_CONTINUE;
+}
+
+static slap_overinst smbk5pwd;
+
+int smbk5pwd_init() {
+	int rc;
+	const char *text;
+
+#ifdef DO_KRB5
+	krb5_error_code ret;
+	extern HDB * _kadm5_s_get_db(void *);
+
+	/* Make sure all of our necessary schema items are loaded */
+	oc_krb5KDCEntry = oc_find("krb5KDCEntry");
+	if ( !oc_krb5KDCEntry ) return -1;
+
+	rc = slap_str2ad( "krb5Key", &ad_krb5Key, &text );
+	if ( rc ) return rc;
+	rc = slap_str2ad( "krb5KeyVersionNumber", &ad_krb5KeyVersionNumber, &text );
+	if ( rc ) return rc;
+	rc = slap_str2ad( "krb5PrincipalName", &ad_krb5PrincipalName, &text );
+	if ( rc ) return rc;
+
+	/* Initialize Kerberos context */
+	ret = krb5_init_context(&context);
+	if (ret) {
+		return -1;
+	}
+
+	ret = kadm5_s_init_with_password_ctx( context,
+		KADM5_ADMIN_SERVICE,
+		NULL,
+		KADM5_ADMIN_SERVICE,
+		&conf, 0, 0, &kadm_context );
+	
+	db = _kadm5_s_get_db(kadm_context);
+#endif /* DO_KRB5 */
+
+#ifdef DO_SAMBA
+	oc_sambaSamAccount = oc_find("sambaSamAccount");
+	if ( !oc_sambaSamAccount ) return -1;
+
+	rc = slap_str2ad( "sambaLMPassword", &ad_sambaLMPassword, &text );
+	if ( rc ) return rc;
+	rc = slap_str2ad( "sambaNTPassword", &ad_sambaNTPassword, &text );
+	if ( rc ) return rc;
+	rc = slap_str2ad( "sambaPwdLastSet", &ad_sambaPwdLastSet, &text );
+	if ( rc ) return rc;
+#endif /* DO_SAMBA */
+
+	smbk5pwd.on_bi.bi_type = "smbk5pwd";
+	smbk5pwd.on_bi.bi_extended = smbk5pwd_exop_passwd;
+
+#ifdef DO_KRB5
+	smbk5pwd.on_bi.bi_op_bind = smbk5pwd_op_bind;
+
+	lutil_passwd_add( (struct berval *)&k5key_scheme, k5key_chk, k5key_hash );
+#endif
+
+	return overlay_register( &smbk5pwd );
+}
+
+#if SLAPD_OVER_SMBK5PWD == SLAPD_MOD_DYNAMIC
+int init_module(int argc, char *argv[]) {
+	return smbk5pwd_init();
+}
+#endif
+
+#endif /* defined(SLAPD_OVER_SMBK5PWD) */