1 files changed, 539 insertions, 0 deletions

diff --git a/servers/slapd/modrdn.c b/servers/slapd/modrdn.c
new file mode 100644
index 0000000..1603fa0
--- /dev/null
+++ b/servers/slapd/modrdn.c
@@ -0,0 +1,539 @@
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 1998-2021 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, 0, 0 );
+	/*
+	 * 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, 0, 0 );
+		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, 0, 0 );
+
+			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, 0, 0 );
+
+			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, 0, 0 );
+		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, 0, 0 );
+		/* 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, 0 );
+		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, 0 );
+		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, 0 );
+		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, 0 );
+			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, 0, 0, 0 );
+
+	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 = frontendDB->be_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, 0, 0 );
+		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 the provider for what it holds;
+	 * 3) it's a replica and the dn supplied is the update_ndn.
+	 */
+	if ( op->o_bd->be_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;
+			op->o_bd->be_modrdn( op, rs );
+
+			if ( op->o_bd->be_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;
+						op->o_bd->be_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;
+}
+
+/* extracted from slap_modrdn2mods() */
+static int
+mod_op_add_val(
+	Operation *op,
+	AttributeDescription * const desc,
+	struct berval * const val,
+	short const sm_op )
+{
+	int rv = LDAP_SUCCESS;
+	Modifications *mod_tmp;
+	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], val );
+	mod_tmp->sml_values[1].bv_val = NULL;
+	if( desc->ad_type->sat_equality && desc->ad_type->sat_equality->smr_normalize) {
+		mod_tmp->sml_nvalues = ( BerVarray )ch_malloc( 2 * sizeof( struct berval ) );
+		rv = 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 (rv != 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 = sm_op;
+	mod_tmp->sml_flags = 0;
+	mod_tmp->sml_next = op->orr_modlist;
+	op->orr_modlist = mod_tmp;
+done:
+	return rv;
+}
+
+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, 0, 0 );
+		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, 0, 0 );
+			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;
+
+		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 */
+		rs->sr_err = mod_op_add_val( op, desc, &new_rdn[a_cnt]->la_value, SLAP_MOD_SOFTADD );
+		if (rs->sr_err != LDAP_SUCCESS)
+			goto done;
+	}
+
+	/* Remove old rdn value if required */
+	if ( op->orr_deleteoldrdn ) {
+		for ( d_cnt = 0; old_rdn[d_cnt]; d_cnt++ ) {
+			AttributeDescription	*desc = NULL;
+
+			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 */
+			rs->sr_err = mod_op_add_val( op, desc, &old_rdn[d_cnt]->la_value, LDAP_MOD_DELETE );
+			if (rs->sr_err != LDAP_SUCCESS)
+				goto done;
+		}
+	}
+	
+done:
+
+	/* LDAP v2 supporting correct attribute handling. */
+	if ( rs->sr_err != LDAP_SUCCESS && op->orr_modlist != NULL ) {
+		slap_mods_free( op->orr_modlist, 1 );
+		op->orr_modlist = NULL;
+	}
+
+	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;
+}
+