示例#1
0
/* 
** Callback used to add entries to a group, which is already in the database.
** (used in on_response)
** The group is passed in autogroup_ga_t->agg_group
** NOTE: Very slow.
*/
static int
autogroup_member_search_modify_cb( Operation *op, SlapReply *rs )
{
	assert( op->o_tag == LDAP_REQ_SEARCH );

	if ( rs->sr_type == REP_SEARCH ) {
		autogroup_ga_t		*agg = (autogroup_ga_t *)op->o_callback->sc_private;
		autogroup_entry_t	*age = agg->agg_group;
		Modifications		*modlist;
		struct berval		vals[ 2 ], nvals[ 2 ];

		Debug(LDAP_DEBUG_TRACE, "==> autogroup_member_search_modify_cb <%s>\n",
			rs->sr_entry ? rs->sr_entry->e_name.bv_val : "UNKNOWN_DN", 0, 0);

		vals[ 0 ] = rs->sr_entry->e_name;
		BER_BVZERO( &vals[ 1 ] );
		nvals[ 0 ] = rs->sr_entry->e_nname;
		BER_BVZERO( &nvals[ 1 ] );

		modlist = (Modifications *)ch_calloc( 1, sizeof( Modifications ) );

		modlist->sml_op = LDAP_MOD_ADD;
		modlist->sml_desc = age->age_def->agd_member_ad;
		modlist->sml_type = age->age_def->agd_member_ad->ad_cname;

		ber_bvarray_dup_x( &modlist->sml_values, vals, NULL );
		ber_bvarray_dup_x( &modlist->sml_nvalues, nvals, NULL );
		modlist->sml_numvals = 1;

		modlist->sml_flags = SLAP_MOD_INTERNAL;
		modlist->sml_next = NULL;

		if ( agg->agg_mod == NULL ) {
			agg->agg_mod = modlist;
			agg->agg_mod_last = modlist;
		} else {
			agg->agg_mod_last->sml_next = modlist;
			agg->agg_mod_last = modlist;
		}

	}

	return 0;
}
示例#2
0
static int
deref_response( Operation *op, SlapReply *rs )
{
	int rc = SLAP_CB_CONTINUE;

	if ( rs->sr_type == REP_SEARCH ) {
		BerElementBuffer berbuf;
		BerElement *ber = (BerElement *) &berbuf;
		deref_cb_t *dc = (deref_cb_t *)op->o_callback->sc_private;
		DerefSpec *ds;
		DerefRes *dr, *drhead = NULL, **drp = &drhead;
		struct berval bv = BER_BVNULL;
		int nDerefRes = 0, nDerefVals = 0, nAttrs = 0, nVals = 0;
		struct berval ctrlval;
		LDAPControl *ctrl, *ctrlsp[2];
		AccessControlState acl_state = ACL_STATE_INIT;
		static char dummy = '\0';
		Entry *ebase;
		int i;

		rc = overlay_entry_get_ov( op, &rs->sr_entry->e_nname, NULL, NULL, 0, &ebase, dc->dc_on );
		if ( rc != LDAP_SUCCESS || ebase == NULL ) {
			return SLAP_CB_CONTINUE;
		}

		for ( ds = dc->dc_ds; ds; ds = ds->ds_next ) {
			Attribute *a = attr_find( ebase->e_attrs, ds->ds_derefAttr );

			if ( a != NULL ) {
				DerefVal *dv;
				BerVarray *bva;

				if ( !access_allowed( op, rs->sr_entry, a->a_desc,
						NULL, ACL_READ, &acl_state ) )
				{
					continue;
				}

				dr = op->o_tmpcalloc( 1,
					sizeof( DerefRes ) + ( sizeof( DerefVal ) + sizeof( BerVarray * ) * ds->ds_nattrs ) * ( a->a_numvals + 1 ),
					op->o_tmpmemctx );
				dr->dr_spec = *ds;
				dv = dr->dr_vals = (DerefVal *)&dr[ 1 ];
				bva = (BerVarray *)&dv[ a->a_numvals + 1 ];

				bv.bv_len += ds->ds_derefAttr->ad_cname.bv_len;
				nAttrs++;
				nDerefRes++;

				for ( i = 0; !BER_BVISNULL( &a->a_nvals[ i ] ); i++ ) {
					Entry *e = NULL;

					dv[ i ].dv_attrVals = bva;
					bva += ds->ds_nattrs;


					if ( !access_allowed( op, rs->sr_entry, a->a_desc,
							&a->a_nvals[ i ], ACL_READ, &acl_state ) )
					{
						dv[ i ].dv_derefSpecVal.bv_val = &dummy;
						continue;
					}

					ber_dupbv_x( &dv[ i ].dv_derefSpecVal, &a->a_vals[ i ], op->o_tmpmemctx );
					bv.bv_len += dv[ i ].dv_derefSpecVal.bv_len;
					nVals++;
					nDerefVals++;

					rc = overlay_entry_get_ov( op, &a->a_nvals[ i ], NULL, NULL, 0, &e, dc->dc_on );
					if ( rc == LDAP_SUCCESS && e != NULL ) {
						int j;

						if ( access_allowed( op, e, slap_schema.si_ad_entry,
							NULL, ACL_READ, NULL ) )
						{
							for ( j = 0; j < ds->ds_nattrs; j++ ) {
								Attribute *aa;

								if ( !access_allowed( op, e, ds->ds_attributes[ j ], NULL,
									ACL_READ, &acl_state ) )
								{
									continue;
								}

								aa = attr_find( e->e_attrs, ds->ds_attributes[ j ] );
								if ( aa != NULL ) {
									unsigned k, h, last = aa->a_numvals;

									ber_bvarray_dup_x( &dv[ i ].dv_attrVals[ j ],
										aa->a_vals, op->o_tmpmemctx );

									bv.bv_len += ds->ds_attributes[ j ]->ad_cname.bv_len;

									for ( k = 0, h = 0; k < aa->a_numvals; k++ ) {
										if ( !access_allowed( op, e,
											aa->a_desc,
											&aa->a_nvals[ k ],
											ACL_READ, &acl_state ) )
										{
											op->o_tmpfree( dv[ i ].dv_attrVals[ j ][ h ].bv_val,
												op->o_tmpmemctx );
											dv[ i ].dv_attrVals[ j ][ h ] = dv[ i ].dv_attrVals[ j ][ --last ];
											BER_BVZERO( &dv[ i ].dv_attrVals[ j ][ last ] );
											continue;
										}
										bv.bv_len += dv[ i ].dv_attrVals[ j ][ h ].bv_len;
										nVals++;
										h++;
									}
									nAttrs++;
								}
							}
						}

						overlay_entry_release_ov( op, e, 0, dc->dc_on );
					}
				}

				*drp = dr;
				drp = &dr->dr_next;
			}
		}
		overlay_entry_release_ov( op, ebase, 0, dc->dc_on );

		if ( drhead == NULL ) {
			return SLAP_CB_CONTINUE;
		}

		/* cook the control value */
		bv.bv_len += nVals * sizeof(struct berval)
			+ nAttrs * sizeof(struct berval)
			+ nDerefVals * sizeof(DerefVal)
			+ nDerefRes * sizeof(DerefRes);
		bv.bv_val = op->o_tmpalloc( bv.bv_len, op->o_tmpmemctx );

		ber_init2( ber, &bv, LBER_USE_DER );
		ber_set_option( ber, LBER_OPT_BER_MEMCTX, &op->o_tmpmemctx );

		rc = ber_printf( ber, "{" /*}*/ );
		for ( dr = drhead; dr != NULL; dr = dr->dr_next ) {
			for ( i = 0; !BER_BVISNULL( &dr->dr_vals[ i ].dv_derefSpecVal ); i++ ) {
				int j, first = 1;

				if ( dr->dr_vals[ i ].dv_derefSpecVal.bv_val == &dummy ) {
					continue;
				}

				rc = ber_printf( ber, "{OO" /*}*/,
					&dr->dr_spec.ds_derefAttr->ad_cname,
					&dr->dr_vals[ i ].dv_derefSpecVal );
				op->o_tmpfree( dr->dr_vals[ i ].dv_derefSpecVal.bv_val, op->o_tmpmemctx );
				for ( j = 0; j < dr->dr_spec.ds_nattrs; j++ ) {
					if ( dr->dr_vals[ i ].dv_attrVals[ j ] != NULL ) {
						if ( first ) {
							rc = ber_printf( ber, "t{" /*}*/,
								(LBER_CONSTRUCTED|LBER_CLASS_CONTEXT) );
							first = 0;
						}
						rc = ber_printf( ber, "{O[W]}",
							&dr->dr_spec.ds_attributes[ j ]->ad_cname,
							dr->dr_vals[ i ].dv_attrVals[ j ] );
						op->o_tmpfree( dr->dr_vals[ i ].dv_attrVals[ j ],
							op->o_tmpmemctx );
					}
				}
				if ( !first ) {
					rc = ber_printf( ber, /*{{*/ "}N}" );
				} else {
					rc = ber_printf( ber, /*{*/ "}" );
				}
			}
		}
		rc = ber_printf( ber, /*{*/ "}" );
		if ( ber_flatten2( ber, &ctrlval, 0 ) == -1 ) {
			if ( op->o_deref == SLAP_CONTROL_CRITICAL ) {
				rc = LDAP_CONSTRAINT_VIOLATION;

			} else {
				rc = SLAP_CB_CONTINUE;
			}
			goto cleanup;
		}

		ctrl = op->o_tmpcalloc( 1,
			sizeof( LDAPControl ) + ctrlval.bv_len + 1,
			op->o_tmpmemctx );
		ctrl->ldctl_value.bv_val = (char *)&ctrl[ 1 ];
		ctrl->ldctl_oid = LDAP_CONTROL_X_DEREF;
		ctrl->ldctl_iscritical = 0;
		ctrl->ldctl_value.bv_len = ctrlval.bv_len;
		memcpy( ctrl->ldctl_value.bv_val, ctrlval.bv_val, ctrlval.bv_len );
		ctrl->ldctl_value.bv_val[ ctrl->ldctl_value.bv_len ] = '\0';

		ber_free_buf( ber );

		ctrlsp[0] = ctrl;
		ctrlsp[1] = NULL;
		slap_add_ctrls( op, rs, ctrlsp );

		rc = SLAP_CB_CONTINUE;

cleanup:;
		/* release all */
		for ( ; drhead != NULL; ) {
			DerefRes *drnext = drhead->dr_next;
			op->o_tmpfree( drhead, op->o_tmpmemctx );
			drhead = drnext;
		}

	} else if ( rs->sr_type == REP_RESULT ) {
		rc = deref_cleanup( op, rs );
	}

	return rc;
}
示例#3
0
static int translucent_search_cb(Operation *op, SlapReply *rs) {
	trans_ctx *tc;
	BackendDB *db;
	slap_overinst *on;
	translucent_info *ov;
	Entry *le, *re;
	Attribute *a, *ax, *an, *as = NULL;
	int rc;
	int test_f = 0;

	tc = op->o_callback->sc_private;

	/* Don't let the op complete while we're gathering data */
	if ( rs->sr_type == REP_RESULT && ( tc->step & USE_LIST ))
		return 0;

	if(rs->sr_type != REP_SEARCH || !rs->sr_entry)
		return(SLAP_CB_CONTINUE);

	Debug(LDAP_DEBUG_TRACE, "==> translucent_search_cb: %s\n",
		rs->sr_entry->e_name.bv_val, 0, 0);

	op->ors_slimit = tc->slimit + ( tc->slimit > 0 ? 1 : 0 );
	if ( op->ors_attrs == slap_anlist_all_attributes ) {
		op->ors_attrs = tc->attrs;
		rs->sr_attrs = tc->attrs;
		rs->sr_attr_flags = slap_attr_flags( rs->sr_attrs );
	}

	on = tc->on;
	ov = on->on_bi.bi_private;

	db = op->o_bd;
	re = NULL;

	/* If we have local, get remote */
	if ( tc->step & LCL_SIDE ) {
		le = rs->sr_entry;
		/* If entry is already on list, use it */
		if ( tc->step & USE_LIST ) {
			re = tavl_delete( &tc->list, le, entry_dn_cmp );
			if ( re ) {
				rs_flush_entry( op, rs, on );
				rc = test_filter( op, re, tc->orig );
				if ( rc == LDAP_COMPARE_TRUE ) {
					rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
					rs->sr_entry = re;

					if ( tc->slimit >= 0 && rs->sr_nentries >= tc->slimit ) {
						return LDAP_SIZELIMIT_EXCEEDED;
					}

					return SLAP_CB_CONTINUE;
				} else {
					entry_free( re );
					rs->sr_entry = NULL;
					return 0;
				}
			}
		}
		op->o_bd = &ov->db;
		rc = be_entry_get_rw( op, &rs->sr_entry->e_nname, NULL, NULL, 0, &re );
		if ( rc == LDAP_SUCCESS && re ) {
			Entry *tmp = entry_dup( re );
			be_entry_release_r( op, re );
			re = tmp;
			test_f = 1;
		}
	} else {
	/* Else we have remote, get local */
		op->o_bd = tc->db;
		le = NULL;
		rc = overlay_entry_get_ov(op, &rs->sr_entry->e_nname, NULL, NULL, 0, &le, on);
		if ( rc == LDAP_SUCCESS && le ) {
			re = entry_dup( rs->sr_entry );
			rs_flush_entry( op, rs, on );
		} else {
			le = NULL;
		}
	}

/*
** if we got remote and local entry:
**	foreach local attr:
**		foreach remote attr:
**			if match, remote attr with local attr;
**			if new local, add to list;
**	append new local attrs to remote;
**
*/

	if ( re && le ) {
		for(ax = le->e_attrs; ax; ax = ax->a_next) {
			for(a = re->e_attrs; a; a = a->a_next) {
				if(a->a_desc == ax->a_desc) {
					test_f = 1;
					if(a->a_vals != a->a_nvals)
						ber_bvarray_free(a->a_nvals);
					ber_bvarray_free(a->a_vals);
					ber_bvarray_dup_x( &a->a_vals, ax->a_vals, NULL );
					if ( ax->a_vals == ax->a_nvals ) {
						a->a_nvals = a->a_vals;
					} else {
						ber_bvarray_dup_x( &a->a_nvals, ax->a_nvals, NULL );
					}
					break;
				}
			}
			if(a) continue;
			an = attr_dup(ax);
			an->a_next = as;
			as = an;
		}
		/* Dispose of local entry */
		if ( tc->step & LCL_SIDE ) {
			rs_flush_entry(op, rs, on);
		} else {
			overlay_entry_release_ov(op, le, 0, on);
		}

		/* literally append, so locals are always last */
		if(as) {
			if(re->e_attrs) {
				for(ax = re->e_attrs; ax->a_next; ax = ax->a_next);
				ax->a_next = as;
			} else {
				re->e_attrs = as;
			}
		}
		/* If both filters, save entry for later */
		if ( tc->step == (USE_LIST|RMT_SIDE) ) {
			tavl_insert( &tc->list, re, entry_dn_cmp, avl_dup_error );
			rs->sr_entry = NULL;
			rc = 0;
		} else {
		/* send it now */
			rs->sr_entry = re;
			rs->sr_flags |= REP_ENTRY_MUSTBEFREED;
			if ( test_f ) {
				rc = test_filter( op, rs->sr_entry, tc->orig );
				if ( rc == LDAP_COMPARE_TRUE ) {
					rc = SLAP_CB_CONTINUE;
				} else {
					rc = 0;
				}
			} else {
				rc = SLAP_CB_CONTINUE;
			}
		}
	} else if ( le ) {
	/* Only a local entry: remote was deleted
	 * Ought to delete the local too...
	 */
	 	rc = 0;
	} else if ( tc->step & USE_LIST ) {
	/* Only a remote entry, but both filters:
	 * Test the complete filter
	 */
		rc = test_filter( op, rs->sr_entry, tc->orig );
		if ( rc == LDAP_COMPARE_TRUE ) {
			rc = SLAP_CB_CONTINUE;
		} else {
			rc = 0;
		}
	} else {
	/* Only a remote entry, only remote filter:
	 * just pass thru
	 */
		rc = SLAP_CB_CONTINUE;
	}

	op->o_bd = db;

	if ( rc == SLAP_CB_CONTINUE && tc->slimit >= 0 && rs->sr_nentries >= tc->slimit ) {
		return LDAP_SIZELIMIT_EXCEEDED;
	}

	return rc;
}
示例#4
0
static int
nss_cf_gen(ConfigArgs *c)
{
	slap_overinst *on = (slap_overinst *)c->bi;
	nssov_info *ni = on->on_bi.bi_private;
	nssov_mapinfo *mi;
	int i, j, rc = 0;
	slap_mask_t m;

	if ( c->op == SLAP_CONFIG_EMIT ) {
		switch(c->type) {
		case NSS_SSD:
			rc = 1;
			for (i=NM_alias;i<NM_NONE;i++) {
				struct berval scope;
				struct berval ssd;
				struct berval base;

				mi = &ni->ni_maps[i];

				/* ignore all-default services */
				if ( mi->mi_scope == LDAP_SCOPE_DEFAULT &&
					bvmatch( &mi->mi_filter, &mi->mi_filter0 ) &&
					BER_BVISNULL( &mi->mi_base ))
					continue;

				if ( BER_BVISNULL( &mi->mi_base ))
					base = ni->ni_db->be_nsuffix[0];
				else
					base = mi->mi_base;
				ldap_pvt_scope2bv(mi->mi_scope == LDAP_SCOPE_DEFAULT ?
					LDAP_SCOPE_SUBTREE : mi->mi_scope, &scope);
				ssd.bv_len = STRLENOF(" ldap:///???") + nss_svcs[i].word.bv_len +
					base.bv_len + scope.bv_len + mi->mi_filter.bv_len;
				ssd.bv_val = ch_malloc( ssd.bv_len + 1 );
				sprintf(ssd.bv_val, "%s ldap:///%s??%s?%s", nss_svcs[i].word.bv_val,
					base.bv_val, scope.bv_val, mi->mi_filter.bv_val );
				ber_bvarray_add( &c->rvalue_vals, &ssd );
				rc = 0;
			}
			break;
		case NSS_MAP:
			rc = 1;
			for (i=NM_alias;i<NM_NONE;i++) {

				mi = &ni->ni_maps[i];
				for (j=0;!BER_BVISNULL(&mi->mi_attrkeys[j]);j++) {
					if ( ber_bvstrcasecmp(&mi->mi_attrkeys[j],
						&mi->mi_attrs[j].an_name)) {
						struct berval map;

						map.bv_len = nss_svcs[i].word.bv_len +
							mi->mi_attrkeys[j].bv_len +
							mi->mi_attrs[j].an_desc->ad_cname.bv_len + 2;
						map.bv_val = ch_malloc(map.bv_len + 1);
						sprintf(map.bv_val, "%s %s %s", nss_svcs[i].word.bv_val,
							mi->mi_attrkeys[j].bv_val, mi->mi_attrs[j].an_desc->ad_cname.bv_val );
						ber_bvarray_add( &c->rvalue_vals, &map );
						rc = 0;
					}
				}
			}
			break;
		case NSS_PAM:
			rc = mask_to_verbs( pam_opts, ni->ni_pam_opts, &c->rvalue_vals );
			break;
		case NSS_PAMGROUP:
			if (!BER_BVISEMPTY( &ni->ni_pam_group_dn )) {
				value_add_one( &c->rvalue_vals, &ni->ni_pam_group_dn );
				value_add_one( &c->rvalue_nvals, &ni->ni_pam_group_dn );
			} else {
				rc = 1;
			}
			break;
		case NSS_PAMSESS:
			if (ni->ni_pam_sessions) {
				ber_bvarray_dup_x( &c->rvalue_vals, ni->ni_pam_sessions, NULL );
			} else {
				rc = 1;
			}
			break;
		}
		return rc;
	} else if ( c->op == LDAP_MOD_DELETE ) {
		/* FIXME */
		return 1;
	}
	switch( c->type ) {
	case NSS_SSD: {
		LDAPURLDesc *lud;

		i = verb_to_mask(c->argv[1], nss_svcs);
		if ( i == NM_NONE )
			return 1;

		mi = &ni->ni_maps[i];
		rc = ldap_url_parse(c->argv[2], &lud);
		if ( rc )
			return 1;
		do {
			struct berval base;
			/* Must be LDAP scheme */
			if (strcasecmp(lud->lud_scheme,"ldap")) {
				rc = 1;
				break;
			}
			/* Host part, attrs, and extensions must be empty */
			if (( lud->lud_host && *lud->lud_host ) ||
				lud->lud_attrs || lud->lud_exts ) {
				rc = 1;
				break;
			}
			ber_str2bv( lud->lud_dn,0,0,&base);
			rc = dnNormalize( 0,NULL,NULL,&base,&mi->mi_base,NULL);
			if ( rc )
				break;
			if ( lud->lud_filter ) {
				/* steal this */
				ber_str2bv( lud->lud_filter,0,0,&mi->mi_filter);
				lud->lud_filter = NULL;
			}
			mi->mi_scope = lud->lud_scope;
		} while(0);
		ldap_free_urldesc( lud );
		}
		break;
	case NSS_MAP:
		i = verb_to_mask(c->argv[1], nss_svcs);
		if ( i == NM_NONE )
			return 1;
		rc = 1;
		mi = &ni->ni_maps[i];
		for (j=0; !BER_BVISNULL(&mi->mi_attrkeys[j]); j++) {
			if (!strcasecmp(c->argv[2],mi->mi_attrkeys[j].bv_val)) {
				AttributeDescription *ad = NULL;
				const char *text;
				rc = slap_str2ad( c->argv[3], &ad, &text);
				if ( rc == 0 ) {
					mi->mi_attrs[j].an_desc = ad;
					mi->mi_attrs[j].an_name = ad->ad_cname;
				}
				break;
			}
		}
		break;
	case NSS_PAM:
		m = ni->ni_pam_opts;
		i = verbs_to_mask(c->argc, c->argv, pam_opts, &m);
		if (i == 0) {
			ni->ni_pam_opts = m;
			if ((m & NI_PAM_USERHOST) && !nssov_pam_host_ad) {
				const char *text;
				i = slap_str2ad("host", &nssov_pam_host_ad, &text);
				if (i != LDAP_SUCCESS) {
					snprintf(c->cr_msg, sizeof(c->cr_msg),
						"nssov: host attr unknown: %s", text);
					Debug(LDAP_DEBUG_ANY,"%s\n",c->cr_msg,0,0);
					rc = 1;
					break;
				}
			}
			if ((m & (NI_PAM_USERSVC|NI_PAM_HOSTSVC)) && !nssov_pam_svc_ad) {
				const char *text;
				i = slap_str2ad("authorizedService", &nssov_pam_svc_ad, &text);
				if (i != LDAP_SUCCESS) {
					snprintf(c->cr_msg, sizeof(c->cr_msg),
						"nssov: authorizedService attr unknown: %s", text);
					Debug(LDAP_DEBUG_ANY,"%s\n",c->cr_msg,0,0);
					rc = 1;
					break;
				}
			}
		} else {
			rc = 1;
		}
		break;
	case NSS_PAMGROUP:
		ni->ni_pam_group_dn = c->value_ndn;
		ch_free( c->value_dn.bv_val );
		break;
	case NSS_PAMSESS:
		ber_bvarray_add( &ni->ni_pam_sessions, &c->value_bv );
		break;
	}
	return rc;
}
示例#5
0
int passwd_extop(
	Operation *op,
	SlapReply *rs )
{
	struct berval id = {0, NULL}, hash, *rsp = NULL;
	req_pwdexop_s *qpw = &op->oq_pwdexop;
	req_extended_s qext = op->oq_extended;
	Modifications *ml;
	slap_callback cb = { NULL, slap_null_cb, NULL, NULL };
	int i, nhash;
	char **hashes, idNul = 0;
	int rc;
	BackendDB *op_be;
	int freenewpw = 0;
	struct berval dn = BER_BVNULL, ndn = BER_BVNULL;
	slap_biglock_t *bl = NULL;

	assert( ber_bvcmp( &slap_EXOP_MODIFY_PASSWD, &op->ore_reqoid ) == 0 );

	if( op->o_dn.bv_len == 0 ) {
		Statslog( LDAP_DEBUG_STATS, "%s PASSMOD\n",
			op->o_log_prefix );
		rs->sr_text = "only authenticated users may change passwords";
		return LDAP_STRONG_AUTH_REQUIRED;
	}

	qpw->rs_old.bv_len = 0;
	qpw->rs_old.bv_val = NULL;
	qpw->rs_new.bv_len = 0;
	qpw->rs_new.bv_val = NULL;
	qpw->rs_mods = NULL;
	qpw->rs_modtail = NULL;

	rs->sr_err = slap_passwd_parse( op->ore_reqdata, &id,
		&qpw->rs_old, &qpw->rs_new, &rs->sr_text );

	if ( !BER_BVISNULL( &id )) {
		idNul = id.bv_val[id.bv_len];
		id.bv_val[id.bv_len] = '\0';
	}
	if ( rs->sr_err == LDAP_SUCCESS && !BER_BVISEMPTY( &id ) ) {
		Statslog( LDAP_DEBUG_STATS, "%s PASSMOD id=\"%s\"%s%s\n",
			op->o_log_prefix, id.bv_val,
			qpw->rs_old.bv_val ? " old" : "",
			qpw->rs_new.bv_val ? " new" : "" );
	} else {
		Statslog( LDAP_DEBUG_STATS, "%s PASSMOD%s%s\n",
			op->o_log_prefix,
			qpw->rs_old.bv_val ? " old" : "",
			qpw->rs_new.bv_val ? " new" : "" );
	}

	if ( rs->sr_err != LDAP_SUCCESS ) {
		if ( !BER_BVISNULL( &id ))
			id.bv_val[id.bv_len] = idNul;
		return rs->sr_err;
	}

	if ( !BER_BVISEMPTY( &id ) ) {
		rs->sr_err = dnPrettyNormal( NULL, &id, &dn, &ndn, op->o_tmpmemctx );
		id.bv_val[id.bv_len] = idNul;
		if ( rs->sr_err != LDAP_SUCCESS ) {
			rs->sr_text = "Invalid DN";
			rc = rs->sr_err;
			goto error_return;
		}
		op->o_req_dn = dn;
		op->o_req_ndn = ndn;
		op->o_bd = select_backend( &op->o_req_ndn, 1 );

	} else {
		ber_dupbv_x( &dn, &op->o_dn, op->o_tmpmemctx );
		ber_dupbv_x( &ndn, &op->o_ndn, op->o_tmpmemctx );
		op->o_req_dn = dn;
		op->o_req_ndn = ndn;
		ldap_pvt_thread_mutex_lock( &op->o_conn->c_mutex );
		op->o_bd = op->o_conn->c_authz_backend;
		ldap_pvt_thread_mutex_unlock( &op->o_conn->c_mutex );
	}

	if( op->o_bd == NULL ) {
		if ( qpw->rs_old.bv_val != NULL ) {
			rs->sr_text = "unwilling to verify old password";
			rc = LDAP_UNWILLING_TO_PERFORM;
			goto error_return;
		}

#ifdef HAVE_CYRUS_SASL
		rc = slap_sasl_setpass( op, rs );
#else
		rs->sr_text = "no authz backend";
		rc = LDAP_OTHER;
#endif
		goto error_return;
	}

	if ( op->o_req_ndn.bv_len == 0 ) {
		rs->sr_text = "no password is associated with the Root DSE";
		rc = LDAP_UNWILLING_TO_PERFORM;
		goto error_return;
	}

	/* If we've got a glued backend, check the real backend */
	op_be = op->o_bd;
	if ( SLAP_GLUE_INSTANCE( op->o_bd )) {
		op->o_bd = select_backend( &op->o_req_ndn, 0 );
	}

	bl = slap_biglock_get(op->o_bd);
	slap_biglock_acquire(bl);

	if (backend_check_restrictions( op, rs,
			(struct berval *)&slap_EXOP_MODIFY_PASSWD ) != LDAP_SUCCESS) {
		rc = rs->sr_err;
		goto error_return;
	}

	/* check for referrals */
	if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {
		rc = rs->sr_err;
		goto error_return;
	}

	/* This does not apply to multi-master case */
	if(!( !SLAP_SINGLE_SHADOW( op->o_bd ) || be_isupdate( op ))) {
		/* we SHOULD return a referral in this case */
		BerVarray defref = op->o_bd->be_update_refs
			? op->o_bd->be_update_refs : default_referral;

		if( defref != NULL ) {
			rs->sr_ref = referral_rewrite( defref,
				NULL, NULL, LDAP_SCOPE_DEFAULT );
			if ( ! rs->sr_ref ) ber_bvarray_dup_x( &rs->sr_ref, defref, NULL );
			rs->sr_flags |= REP_REF_MUSTBEFREED;
			rc = LDAP_REFERRAL;
			goto error_return;
		}

		rs->sr_text = "shadow context; no update referral";
		rc = LDAP_UNWILLING_TO_PERFORM;
		goto error_return;
	}

	/* generate a new password if none was provided */
	if ( qpw->rs_new.bv_len == 0 ) {
		slap_passwd_generate( &qpw->rs_new );
		if ( qpw->rs_new.bv_len ) {
			rsp = slap_passwd_return( &qpw->rs_new );
			freenewpw = 1;
		}
	}
	if ( qpw->rs_new.bv_len == 0 ) {
		rs->sr_text = "password generation failed";
		rc = LDAP_OTHER;
		goto error_return;
	}

	op->o_bd = op_be;

	/* Give the backend a chance to handle this itself */
	if ( op->o_bd->be_extended ) {
		rs->sr_err = op->o_bd->be_extended( op, rs );
		if ( rs->sr_err != LDAP_UNWILLING_TO_PERFORM &&
			rs->sr_err != SLAP_CB_CONTINUE )
		{
			rc = rs->sr_err;
			if ( rsp ) {
				rs->sr_rspdata = rsp;
				rsp = NULL;
			}
			goto error_return;
		}
	}

	/* The backend didn't handle it, so try it here */
	if( op->o_bd && !op->o_bd->bd_info->bi_op_modify ) {
		rs->sr_text = "operation not supported for current user";
		rc = LDAP_UNWILLING_TO_PERFORM;
		goto error_return;
	}

	if ( qpw->rs_old.bv_val != NULL ) {
		Entry *e = NULL;

		rc = be_entry_get_rw( op, &op->o_req_ndn, NULL,
			slap_schema.si_ad_userPassword, 0, &e );
		if ( rc == LDAP_SUCCESS && e ) {
			Attribute *a = attr_find( e->e_attrs,
				slap_schema.si_ad_userPassword );
			if ( a )
				rc = slap_passwd_check( op, e, a, &qpw->rs_old, &rs->sr_text );
			else
				rc = 1;
			be_entry_release_r( op, e );
			if ( rc == LDAP_SUCCESS )
				goto old_good;
		}
		rs->sr_text = "unwilling to verify old password";
		rc = LDAP_UNWILLING_TO_PERFORM;
		goto error_return;
	}

old_good:
	ml = ch_malloc( sizeof(Modifications) );
	if ( !qpw->rs_modtail ) qpw->rs_modtail = &ml->sml_next;

	if ( default_passwd_hash ) {
		for ( nhash = 0; default_passwd_hash[nhash]; nhash++ );
		hashes = default_passwd_hash;
	} else {
		nhash = 1;
		hashes = (char **)defhash;
	}
	ml->sml_numvals = nhash;
	ml->sml_values = ch_malloc( (nhash+1)*sizeof(struct berval) );
	for ( i=0; hashes[i]; i++ ) {
		slap_passwd_hash_type( &qpw->rs_new, &hash, hashes[i], &rs->sr_text );
		if ( hash.bv_len == 0 ) {
			if ( !rs->sr_text ) {
				rs->sr_text = "password hash failed";
			}
			break;
		}
		ml->sml_values[i] = hash;
	}
	ml->sml_values[i].bv_val = NULL;
	ml->sml_nvalues = NULL;
	ml->sml_desc = slap_schema.si_ad_userPassword;
	ml->sml_type = ml->sml_desc->ad_cname;
	ml->sml_op = LDAP_MOD_REPLACE;
	ml->sml_flags = 0;
	ml->sml_next = qpw->rs_mods;
	qpw->rs_mods = ml;

	if ( hashes[i] ) {
		rs->sr_err = LDAP_OTHER;

	} else {
		slap_callback *sc = op->o_callback;

		op->o_tag = LDAP_REQ_MODIFY;
		op->o_callback = &cb;
		op->orm_modlist = qpw->rs_mods;
		op->orm_no_opattrs = 0;

		cb.sc_private = qpw;	/* let Modify know this was pwdMod,
					 * if it cares... */

		rs->sr_err = op->o_bd->bd_info->bi_op_modify( op, rs );

		/* be_modify() might have shuffled modifications */
		qpw->rs_mods = op->orm_modlist;

		if ( rs->sr_err == LDAP_SUCCESS ) {
			rs->sr_rspdata = rsp;

		} else if ( rsp ) {
			ber_bvfree( rsp );
			rsp = NULL;
		}
		op->o_tag = LDAP_REQ_EXTENDED;
		op->o_callback = sc;
	}

	rc = rs->sr_err;
	op->oq_extended = qext;

error_return:;
	slap_biglock_release(bl);

	if ( qpw->rs_mods ) {
		slap_mods_free( qpw->rs_mods, 1 );
	}
	if ( freenewpw ) {
		free( qpw->rs_new.bv_val );
	}
	if ( !BER_BVISNULL( &dn ) ) {
		op->o_tmpfree( dn.bv_val, op->o_tmpmemctx );
		BER_BVZERO( &op->o_req_dn );
	}
	if ( !BER_BVISNULL( &ndn ) ) {
		op->o_tmpfree( ndn.bv_val, op->o_tmpmemctx );
		BER_BVZERO( &op->o_req_ndn );
	}

	return rc;
}