/* $OpenLDAP$ */

/* This work is part of OpenLDAP Software <http://www.openldap.org/>.

*

* Copyright 1998-2015 The OpenLDAP Foundation.

* 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>.

*/

/* Portions Copyright 1999, Juan C. Gomez, All rights reserved.

* This software is not subject to any license of Silicon Graphics

* Inc. or Purdue University.

*

* Redistribution and use in source and binary forms are permitted

* without restriction or fee of any kind as long as this notice

* is preserved.

*/

/* Portions Copyright (c) 1995 Regents of the University of Michigan.

* All rights reserved.

*

* Redistribution and use in source and binary forms are permitted

* provided that this notice is preserved and that due credit is given

* to the University of Michigan at Ann Arbor. The name of the University

* may not be used to endorse or promote products derived from this

* software without specific prior written permission. This software

* is provided ``as is'' without express or implied warranty.

*/

#include "portable.h"

#include <stdio.h>

#include <ac/socket.h>

#include <ac/string.h>

#include "slap.h"

int

do_modrdn(

Operation *op,

SlapReply *rs

)

{

struct berval dn = BER_BVNULL;

struct berval newrdn = BER_BVNULL;

struct berval newSuperior = BER_BVNULL;

ber_int_t deloldrdn;

struct berval pnewSuperior = BER_BVNULL;

struct berval nnewSuperior = BER_BVNULL;

ber_len_t length;

Debug( LDAP_DEBUG_TRACE, "%s do_modrdn\n",

op->o_log_prefix );

/*

* Parse the modrdn request. It looks like this:

*

* ModifyRDNRequest := SEQUENCE {

* entry DistinguishedName,

* newrdn RelativeDistinguishedName

* deleteoldrdn BOOLEAN,

* newSuperior [0] LDAPDN OPTIONAL (v3 Only!)

* }

*/

if ( ber_scanf( op->o_ber, "{mmb", &dn, &newrdn, &deloldrdn )

== LBER_ERROR )

{

Debug( LDAP_DEBUG_ANY, "%s do_modrdn: ber_scanf failed\n",

op->o_log_prefix );

send_ldap_discon( op, rs, LDAP_PROTOCOL_ERROR, "decoding error" );

return SLAPD_DISCONNECT;

}

/* Check for newSuperior parameter, if present scan it */

if ( ber_peek_tag( op->o_ber, &length ) == LDAP_TAG_NEWSUPERIOR ) {

if ( op->o_protocol < LDAP_VERSION3 ) {

/* Connection record indicates v2 but field

* newSuperior is present: report error.

*/

Debug( LDAP_DEBUG_ANY,

"%s do_modrdn: newSuperior requires LDAPv3\n",

op->o_log_prefix );

send_ldap_discon( op, rs,

LDAP_PROTOCOL_ERROR, "newSuperior requires LDAPv3" );

rs->sr_err = SLAPD_DISCONNECT;

goto cleanup;

}

if ( ber_scanf( op->o_ber, "m", &newSuperior )

== LBER_ERROR ) {

Debug( LDAP_DEBUG_ANY, "%s do_modrdn: ber_scanf(\"m\") failed\n",

op->o_log_prefix );

send_ldap_discon( op, rs,

LDAP_PROTOCOL_ERROR, "decoding error" );

rs->sr_err = SLAPD_DISCONNECT;

goto cleanup;

}

op->orr_newSup = &pnewSuperior;

op->orr_nnewSup = &nnewSuperior;

}

Debug( LDAP_DEBUG_ARGS,

"do_modrdn: dn (%s) newrdn (%s) newsuperior (%s)\n",

dn.bv_val, newrdn.bv_val,

newSuperior.bv_len ? newSuperior.bv_val : "" );

if ( ber_scanf( op->o_ber, /*{*/ "}") == LBER_ERROR ) {

Debug( LDAP_DEBUG_ANY, "%s do_modrdn: ber_scanf failed\n",

op->o_log_prefix );

send_ldap_discon( op, rs,

LDAP_PROTOCOL_ERROR, "decoding error" );

rs->sr_err = SLAPD_DISCONNECT;

goto cleanup;

}

if( get_ctrls( op, rs, 1 ) != LDAP_SUCCESS ) {

Debug( LDAP_DEBUG_ANY, "%s do_modrdn: get_ctrls failed\n",

op->o_log_prefix );

/* get_ctrls has sent results. Now clean up. */

goto cleanup;

}

rs->sr_err = dnPrettyNormal( NULL, &dn, &op->o_req_dn, &op->o_req_ndn, op->o_tmpmemctx );

if( rs->sr_err != LDAP_SUCCESS ) {

Debug( LDAP_DEBUG_ANY, "%s do_modrdn: invalid dn (%s)\n",

op->o_log_prefix, dn.bv_val );

send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid DN" );

goto cleanup;

}

/* FIXME: should have/use rdnPretty / rdnNormalize routines */

rs->sr_err = dnPrettyNormal( NULL, &newrdn, &op->orr_newrdn, &op->orr_nnewrdn, op->o_tmpmemctx );

if( rs->sr_err != LDAP_SUCCESS ) {

Debug( LDAP_DEBUG_ANY, "%s do_modrdn: invalid newrdn (%s)\n",

op->o_log_prefix, newrdn.bv_val );

send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid new RDN" );

goto cleanup;

}

if( rdn_validate( &op->orr_newrdn ) != LDAP_SUCCESS ) {

Debug( LDAP_DEBUG_ANY, "%s do_modrdn: invalid rdn (%s)\n",

op->o_log_prefix, op->orr_newrdn.bv_val );

send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid new RDN" );

goto cleanup;

}

if( op->orr_newSup ) {

rs->sr_err = dnPrettyNormal( NULL, &newSuperior, &pnewSuperior,

&nnewSuperior, op->o_tmpmemctx );

if( rs->sr_err != LDAP_SUCCESS ) {

Debug( LDAP_DEBUG_ANY,

"%s do_modrdn: invalid newSuperior (%s)\n",

op->o_log_prefix, newSuperior.bv_val );

send_ldap_error( op, rs, LDAP_INVALID_DN_SYNTAX, "invalid newSuperior" );

goto cleanup;

}

}

Statslog( LDAP_DEBUG_STATS, "%s MODRDN dn=\"%s\"\n",

op->o_log_prefix, op->o_req_dn.bv_val );

op->orr_deleteoldrdn = deloldrdn;

op->orr_modlist = NULL;

/* prepare modlist of modifications from old/new RDN */

rs->sr_err = slap_modrdn2mods( op, rs );

if ( rs->sr_err != LDAP_SUCCESS ) {

send_ldap_result( op, rs );

goto cleanup;

}

op->o_bd = frontendDB;

rs->sr_err = slap_biglock_call_be( op_modrdn, op, rs );

#ifdef LDAP_X_TXN

if( rs->sr_err == LDAP_X_TXN_SPECIFY_OKAY ) {

/* skip cleanup */

}

#endif

cleanup:

op->o_tmpfree( op->o_req_dn.bv_val, op->o_tmpmemctx );

op->o_tmpfree( op->o_req_ndn.bv_val, op->o_tmpmemctx );

op->o_tmpfree( op->orr_newrdn.bv_val, op->o_tmpmemctx );

op->o_tmpfree( op->orr_nnewrdn.bv_val, op->o_tmpmemctx );

if ( op->orr_modlist != NULL )

slap_mods_free( op->orr_modlist, 1 );

if ( !BER_BVISNULL( &pnewSuperior ) ) {

op->o_tmpfree( pnewSuperior.bv_val, op->o_tmpmemctx );

}

if ( !BER_BVISNULL( &nnewSuperior ) ) {

op->o_tmpfree( nnewSuperior.bv_val, op->o_tmpmemctx );

}

return rs->sr_err;

}

int

fe_op_modrdn( Operation *op, SlapReply *rs )

{

struct berval dest_ndn = BER_BVNULL, dest_pndn, pdn = BER_BVNULL;

BackendDB *op_be, *bd = op->o_bd;

ber_slen_t diff;

if( op->o_req_ndn.bv_len == 0 ) {

Debug( LDAP_DEBUG_ANY, "%s do_modrdn: root dse!\n",

op->o_log_prefix );

send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,

"cannot rename the root DSE" );

goto cleanup;

} else if ( bvmatch( &op->o_req_ndn, &frontendDB->be_schemandn ) ) {

Debug( LDAP_DEBUG_ANY, "%s do_modrdn: subschema subentry: %s (%ld)\n",

op->o_log_prefix, frontendDB->be_schemandn.bv_val, (long)frontendDB->be_schemandn.bv_len );

send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,

"cannot rename subschema subentry" );

goto cleanup;

}

if( op->orr_nnewSup ) {

dest_pndn = *op->orr_nnewSup;

} else {

dnParent( &op->o_req_ndn, &dest_pndn );

}

build_new_dn( &dest_ndn, &dest_pndn, &op->orr_nnewrdn, op->o_tmpmemctx );

diff = (ber_slen_t) dest_ndn.bv_len - (ber_slen_t) op->o_req_ndn.bv_len;

if ( diff > 0 ? dnIsSuffix( &dest_ndn, &op->o_req_ndn )

: diff < 0 && dnIsSuffix( &op->o_req_ndn, &dest_ndn ) )

{

send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,

diff > 0 ? "cannot place an entry below itself"

: "cannot place an entry above itself" );

goto cleanup;

}

/*

* We could be serving multiple database backends. Select the

* appropriate one, or send a referral to our "referral server"

* if we don't hold it.

*/

op->o_bd = select_backend( &op->o_req_ndn, 1 );

if ( op->o_bd == NULL ) {

op->o_bd = bd;

rs->sr_ref = referral_rewrite( default_referral,

NULL, &op->o_req_dn, LDAP_SCOPE_DEFAULT );

if (!rs->sr_ref) rs->sr_ref = default_referral;

if ( rs->sr_ref != NULL ) {

rs->sr_err = LDAP_REFERRAL;

send_ldap_result( op, rs );

if (rs->sr_ref != default_referral) ber_bvarray_free( rs->sr_ref );

} else {

send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,

"no global superior knowledge" );

}

goto cleanup;

}

/* 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 );

}

/* check restrictions */

if( backend_check_restrictions( op, rs, NULL ) != LDAP_SUCCESS ) {

send_ldap_result( op, rs );

goto cleanup;

}

/* check for referrals */

if ( backend_check_referrals( op, rs ) != LDAP_SUCCESS ) {

goto cleanup;

}

/* check that destination DN is in the same backend as source DN */

if ( select_backend( &dest_ndn, 0 ) != op->o_bd ) {

send_ldap_error( op, rs, LDAP_AFFECTS_MULTIPLE_DSAS,

"cannot rename between DSAs" );

goto cleanup;

}

/*

* do the modrdn if 1 && (2 || 3)

* 1) there is a modrdn function implemented in this backend;

* 2) this backend is master for what it holds;

* 3) it's a replica and the dn supplied is the update_ndn.

*/

if ( op->o_bd->bd_info->bi_op_modrdn ) {

/* do the update here */

int repl_user = be_isupdate( op );

if ( !SLAP_SINGLE_SHADOW(op->o_bd) || repl_user )

{

op->o_bd = op_be;

slap_biglock_call_be( op_modrdn, op, rs );

if ( op->o_bd->bd_info->bi_op_delete ) {

struct berval org_req_dn = BER_BVNULL;

struct berval org_req_ndn = BER_BVNULL;

struct berval org_dn = BER_BVNULL;

struct berval org_ndn = BER_BVNULL;

int org_managedsait;

org_req_dn = op->o_req_dn;

org_req_ndn = op->o_req_ndn;

org_dn = op->o_dn;

org_ndn = op->o_ndn;

org_managedsait = get_manageDSAit( op );

op->o_dn = op->o_bd->be_rootdn;

op->o_ndn = op->o_bd->be_rootndn;

op->o_managedsait = SLAP_CONTROL_NONCRITICAL;

while ( rs->sr_err == LDAP_SUCCESS &&

op->o_delete_glue_parent ) {

op->o_delete_glue_parent = 0;

if ( !be_issuffix( op->o_bd, &op->o_req_ndn )) {

slap_callback cb = { NULL };

cb.sc_response = slap_null_cb;

dnParent( &op->o_req_ndn, &pdn );

op->o_req_dn = pdn;

op->o_req_ndn = pdn;

op->o_callback = &cb;

slap_biglock_call_be( op_delete, op, rs );

} else {

break;

}

}

op->o_managedsait = org_managedsait;

op->o_dn = org_dn;

op->o_ndn = org_ndn;

op->o_req_dn = org_req_dn;

op->o_req_ndn = org_req_ndn;

op->o_delete_glue_parent = 0;

}

} else {

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, &op->o_req_dn, LDAP_SCOPE_DEFAULT );

if (!rs->sr_ref) rs->sr_ref = defref;

rs->sr_err = LDAP_REFERRAL;

send_ldap_result( op, rs );

if (rs->sr_ref != defref) ber_bvarray_free( rs->sr_ref );

} else {

send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,

"shadow context; no update referral" );

}

}

} else {

send_ldap_error( op, rs, LDAP_UNWILLING_TO_PERFORM,

"operation not supported within namingContext" );

}

cleanup:;

if ( dest_ndn.bv_val != NULL )

ber_memfree_x( dest_ndn.bv_val, op->o_tmpmemctx );

op->o_bd = bd;

return rs->sr_err;

}

int

slap_modrdn2mods(

Operation *op,

SlapReply *rs )

{

int a_cnt, d_cnt;

LDAPRDN old_rdn = NULL;

LDAPRDN new_rdn = NULL;

assert( !BER_BVISEMPTY( &op->oq_modrdn.rs_newrdn ) );

/* if requestDN is empty, silently reset deleteOldRDN */

if ( BER_BVISEMPTY( &op->o_req_dn ) ) op->orr_deleteoldrdn = 0;

if ( ldap_bv2rdn_x( &op->oq_modrdn.rs_newrdn, &new_rdn,

(char **)&rs->sr_text, LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) ) {

Debug( LDAP_DEBUG_TRACE,

"%s slap_modrdn2mods: can't figure out "

"type(s)/value(s) of newrdn\n",

op->o_log_prefix );

rs->sr_err = LDAP_INVALID_DN_SYNTAX;

rs->sr_text = "unknown type(s)/value(s) used in RDN";

goto done;

}

if ( op->oq_modrdn.rs_deleteoldrdn ) {

if ( ldap_bv2rdn_x( &op->o_req_dn, &old_rdn,

(char **)&rs->sr_text, LDAP_DN_FORMAT_LDAP, op->o_tmpmemctx ) ) {

Debug( LDAP_DEBUG_TRACE,

"%s slap_modrdn2mods: can't figure out "

"type(s)/value(s) of oldrdn\n",

op->o_log_prefix );

rs->sr_err = LDAP_OTHER;

rs->sr_text = "cannot parse RDN from old DN";

goto done;

}

}

rs->sr_text = NULL;

/* Add new attribute values to the entry */

for ( a_cnt = 0; new_rdn[a_cnt]; a_cnt++ ) {

AttributeDescription *desc = NULL;

Modifications *mod_tmp;

rs->sr_err = slap_bv2ad( &new_rdn[a_cnt]->la_attr, &desc, &rs->sr_text );

if ( rs->sr_err != LDAP_SUCCESS ) {

Debug( LDAP_DEBUG_TRACE,

"%s slap_modrdn2mods: %s: %s (new)\n",

op->o_log_prefix,

rs->sr_text,

new_rdn[ a_cnt ]->la_attr.bv_val );

goto done;

}

if ( !desc->ad_type->sat_equality ) {

Debug( LDAP_DEBUG_TRACE,

"%s slap_modrdn2mods: %s: %s (new)\n",

op->o_log_prefix,

rs->sr_text,

new_rdn[ a_cnt ]->la_attr.bv_val );

rs->sr_text = "naming attribute has no equality matching rule";

rs->sr_err = LDAP_NAMING_VIOLATION;

goto done;

}

/* Apply modification */

mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications ) );

mod_tmp->sml_desc = desc;

BER_BVZERO( &mod_tmp->sml_type );

mod_tmp->sml_numvals = 1;

mod_tmp->sml_values = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );

ber_dupbv( &mod_tmp->sml_values[0], &new_rdn[a_cnt]->la_value );

mod_tmp->sml_values[1].bv_val = NULL;

if( desc->ad_type->sat_equality->smr_normalize) {

mod_tmp->sml_nvalues = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );

rs->sr_err = desc->ad_type->sat_equality->smr_normalize(

SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,

desc->ad_type->sat_syntax,

desc->ad_type->sat_equality,

&mod_tmp->sml_values[0],

&mod_tmp->sml_nvalues[0], NULL );

if (rs->sr_err != LDAP_SUCCESS) {

ch_free(mod_tmp->sml_nvalues);

ch_free(mod_tmp->sml_values[0].bv_val);

ch_free(mod_tmp->sml_values);

ch_free(mod_tmp);

goto done;

}

mod_tmp->sml_nvalues[1].bv_val = NULL;

} else {

mod_tmp->sml_nvalues = NULL;

}

mod_tmp->sml_op = SLAP_MOD_SOFTADD;

mod_tmp->sml_flags = 0;

mod_tmp->sml_next = op->orr_modlist;

op->orr_modlist = mod_tmp;

}

/* Remove old rdn value if required */

if ( op->orr_deleteoldrdn ) {

for ( d_cnt = 0; old_rdn[d_cnt]; d_cnt++ ) {

AttributeDescription *desc = NULL;

Modifications *mod_tmp;

rs->sr_err = slap_bv2ad( &old_rdn[d_cnt]->la_attr, &desc, &rs->sr_text );

if ( rs->sr_err != LDAP_SUCCESS ) {

Debug( LDAP_DEBUG_TRACE,

"%s slap_modrdn2mods: %s: %s (old)\n",

op->o_log_prefix,

rs->sr_text,

old_rdn[d_cnt]->la_attr.bv_val );

goto done;

}

/* Apply modification */

mod_tmp = ( Modifications * )ch_malloc( sizeof( Modifications ) );

mod_tmp->sml_desc = desc;

BER_BVZERO( &mod_tmp->sml_type );

mod_tmp->sml_numvals = 1;

mod_tmp->sml_values = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );

ber_dupbv( &mod_tmp->sml_values[0], &old_rdn[d_cnt]->la_value );

mod_tmp->sml_values[1].bv_val = NULL;

if( desc->ad_type->sat_equality->smr_normalize) {

mod_tmp->sml_nvalues = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );

(void) (*desc->ad_type->sat_equality->smr_normalize)(

SLAP_MR_EQUALITY|SLAP_MR_VALUE_OF_ASSERTION_SYNTAX,

desc->ad_type->sat_syntax,

desc->ad_type->sat_equality,

&mod_tmp->sml_values[0],

&mod_tmp->sml_nvalues[0], NULL );

mod_tmp->sml_nvalues[1].bv_val = NULL;

} else {

mod_tmp->sml_nvalues = NULL;

}

mod_tmp->sml_op = LDAP_MOD_DELETE;

mod_tmp->sml_flags = 0;

mod_tmp->sml_next = op->orr_modlist;

op->orr_modlist = mod_tmp;

}

}

done:

/* LDAP v2 supporting correct attribute handling. */

if ( rs->sr_err != LDAP_SUCCESS && op->orr_modlist != NULL ) {

Modifications *tmp;

for ( ; op->orr_modlist != NULL; op->orr_modlist = tmp ) {

tmp = op->orr_modlist->sml_next;

ch_free( op->orr_modlist );

}

}

if ( new_rdn != NULL ) {

ldap_rdnfree_x( new_rdn, op->o_tmpmemctx );

}

if ( old_rdn != NULL ) {

ldap_rdnfree_x( old_rdn, op->o_tmpmemctx );

}

return rs->sr_err;

}