Adding upstream version 2.5.13+dfsg.upstream/2.5.13+dfsgupstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 558 insertions, 0 deletions

diff --git a/servers/slapd/back-ndb/modrdn.cpp b/servers/slapd/back-ndb/modrdn.cpp
new file mode 100644
index 0000000..ecc3c8e
--- /dev/null
+++ b/servers/slapd/back-ndb/modrdn.cpp
@@ -0,0 +1,558 @@
+/* modrdn.cpp - ndb backend modrdn routine */
+/* $OpenLDAP$ */
+/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
+ *
+ * Copyright 2008-2022 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>.
+ */
+/* ACKNOWLEDGEMENTS:
+ * This work was initially developed by Howard Chu for inclusion
+ * in OpenLDAP Software. This work was sponsored by MySQL.
+ */
+
+#include "portable.h"
+
+#include <stdio.h>
+#include <ac/string.h>
+
+#include "back-ndb.h"
+
+int
+ndb_back_modrdn( Operation *op, SlapReply *rs )
+{
+	struct ndb_info *ni = (struct ndb_info *) op->o_bd->be_private;
+	AttributeDescription *children = slap_schema.si_ad_children;
+	AttributeDescription *entry = slap_schema.si_ad_entry;
+	struct berval	new_dn = BER_BVNULL, new_ndn = BER_BVNULL;
+	Entry		e = {0};
+	Entry		e2 = {0};
+	char textbuf[SLAP_TEXT_BUFLEN];
+	size_t textlen = sizeof textbuf;
+
+	struct berval	*np_dn = NULL;			/* newSuperior dn */
+	struct berval	*np_ndn = NULL;			/* newSuperior ndn */
+
+	int		manageDSAit = get_manageDSAit( op );
+	int		num_retries = 0;
+
+	NdbArgs NA, NA2;
+	NdbRdns rdns, rdn2;
+	struct berval matched;
+
+	LDAPControl **preread_ctrl = NULL;
+	LDAPControl **postread_ctrl = NULL;
+	LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS];
+	int num_ctrls = 0;
+
+	int	rc;
+
+	Debug( LDAP_DEBUG_ARGS, "==>" LDAP_XSTRING(ndb_back_modrdn) "(%s,%s,%s)\n",
+		op->o_req_dn.bv_val,op->oq_modrdn.rs_newrdn.bv_val,
+		op->oq_modrdn.rs_newSup ? op->oq_modrdn.rs_newSup->bv_val : "NULL" );
+
+	ctrls[num_ctrls] = NULL;
+
+	slap_mods_opattrs( op, &op->orr_modlist, 1 );
+
+	e.e_name = op->o_req_dn;
+	e.e_nname = op->o_req_ndn;
+
+	/* Get our NDB handle */
+	rs->sr_err = ndb_thread_handle( op, &NA.ndb );
+	rdns.nr_num = 0;
+	NA.rdns = &rdns;
+	NA.e = &e;
+	NA2.ndb = NA.ndb;
+	NA2.e = &e2;
+	NA2.rdns = &rdn2;
+
+	if( 0 ) {
+retry:	/* transaction retry */
+		NA.txn->close();
+		NA.txn = NULL;
+		if ( e.e_attrs ) {
+			attrs_free( e.e_attrs );
+			e.e_attrs = NULL;
+		}
+		Debug( LDAP_DEBUG_TRACE, "==>" LDAP_XSTRING(ndb_back_modrdn)
+				": retrying...\n", 0, 0, 0 );
+		if ( op->o_abandon ) {
+			rs->sr_err = SLAPD_ABANDON;
+			goto return_results;
+		}
+		if ( NA2.ocs ) {
+			ber_bvarray_free_x( NA2.ocs, op->o_tmpmemctx );
+		}
+		if ( NA.ocs ) {
+			ber_bvarray_free_x( NA.ocs, op->o_tmpmemctx );
+		}
+		ndb_trans_backoff( ++num_retries );
+	}
+	NA.ocs = NULL;
+	NA2.ocs = NULL;
+
+	/* begin transaction */
+	NA.txn = NA.ndb->startTransaction();
+	rs->sr_text = NULL;
+	if( !NA.txn ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(ndb_back_modrdn) ": startTransaction failed: %s (%d)\n",
+			NA.ndb->getNdbError().message, NA.ndb->getNdbError().code, 0 );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+		goto return_results;
+	}
+	NA2.txn = NA.txn;
+
+	/* get entry */
+	rs->sr_err = ndb_entry_get_info( op, &NA, 1, &matched );
+	switch( rs->sr_err ) {
+	case 0:
+		break;
+	case LDAP_NO_SUCH_OBJECT:
+		Debug( LDAP_DEBUG_ARGS,
+			"<=- ndb_back_modrdn: no such object %s\n",
+			op->o_req_dn.bv_val, 0, 0 );
+		rs->sr_matched = matched.bv_val;
+		if ( NA.ocs )
+			ndb_check_referral( op, rs, &NA );
+		goto return_results;
+#if 0
+	case DB_LOCK_DEADLOCK:
+	case DB_LOCK_NOTGRANTED:
+		goto retry;
+#endif
+	case LDAP_BUSY:
+		rs->sr_text = "ldap server busy";
+		goto return_results;
+	default:
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+		goto return_results;
+	}
+
+	/* acquire and lock entry */
+	rs->sr_err = ndb_entry_get_data( op, &NA, 1 );
+	if ( rs->sr_err )
+		goto return_results;
+
+	if ( !manageDSAit && is_entry_glue( &e )) {
+		rs->sr_err = LDAP_NO_SUCH_OBJECT;
+		goto return_results;
+	}
+	
+	if ( get_assert( op ) &&
+		( test_filter( op, &e, (Filter *)get_assertion( op )) != LDAP_COMPARE_TRUE ))
+	{
+		rs->sr_err = LDAP_ASSERTION_FAILED;
+		goto return_results;
+	}
+
+	/* check write on old entry */
+	rs->sr_err = access_allowed( op, &e, entry, NULL, ACL_WRITE, NULL );
+	if ( ! rs->sr_err ) {
+		Debug( LDAP_DEBUG_TRACE, "no access to entry\n", 0,
+			0, 0 );
+		rs->sr_text = "no write access to old entry";
+		rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+		goto return_results;
+	}
+
+	/* Can't do it if we have kids */
+	rs->sr_err = ndb_has_children( &NA, &rc );
+	if ( rs->sr_err ) {
+		Debug(LDAP_DEBUG_ARGS,
+			"<=- " LDAP_XSTRING(ndb_back_modrdn)
+			": has_children failed: %s (%d)\n",
+			NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "internal error";
+		goto return_results;
+	}
+	if ( rc == LDAP_COMPARE_TRUE ) {
+		Debug(LDAP_DEBUG_ARGS,
+			"<=- " LDAP_XSTRING(ndb_back_modrdn)
+			": non-leaf %s\n",
+			op->o_req_dn.bv_val, 0, 0);
+		rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF;
+		rs->sr_text = "subtree rename not supported";
+		goto return_results;
+	}
+
+	if (!manageDSAit && is_entry_referral( &e ) ) {
+		/* entry is a referral, don't allow modrdn */
+		rs->sr_ref = get_entry_referrals( op, &e );
+
+		Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(ndb_back_modrdn)
+			": entry %s is referral\n", e.e_dn, 0, 0 );
+
+		rs->sr_err = LDAP_REFERRAL,
+		rs->sr_matched = op->o_req_dn.bv_val;
+		rs->sr_flags = REP_REF_MUSTBEFREED;
+		goto return_results;
+	}
+
+	if ( be_issuffix( op->o_bd, &e.e_nname ) ) {
+		/* There can only be one suffix entry */
+		rs->sr_err = LDAP_NAMING_VIOLATION;
+		rs->sr_text = "cannot rename suffix entry";
+		goto return_results;
+	} else {
+		dnParent( &e.e_nname, &e2.e_nname );
+		dnParent( &e.e_name, &e2.e_name );
+	}
+
+	/* check parent for "children" acl */
+	rs->sr_err = access_allowed( op, &e2,
+		children, NULL,
+		op->oq_modrdn.rs_newSup == NULL ?
+			ACL_WRITE : ACL_WDEL,
+		NULL );
+
+	if ( ! rs->sr_err ) {
+		rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+		Debug( LDAP_DEBUG_TRACE, "no access to parent\n", 0,
+			0, 0 );
+		rs->sr_text = "no write access to old parent's children";
+		goto return_results;
+	}
+
+	Debug( LDAP_DEBUG_TRACE,
+		LDAP_XSTRING(ndb_back_modrdn) ": wr to children "
+		"of entry %s OK\n", e2.e_name.bv_val, 0, 0 );
+	
+	if ( op->oq_modrdn.rs_newSup != NULL ) {
+		Debug( LDAP_DEBUG_TRACE, 
+			LDAP_XSTRING(ndb_back_modrdn)
+			": new parent \"%s\" requested...\n",
+			op->oq_modrdn.rs_newSup->bv_val, 0, 0 );
+
+		/*  newSuperior == oldParent? */
+		if( dn_match( &e2.e_nname, op->oq_modrdn.rs_nnewSup ) ) {
+			Debug( LDAP_DEBUG_TRACE, "bdb_back_modrdn: "
+				"new parent \"%s\" same as the old parent \"%s\"\n",
+				op->oq_modrdn.rs_newSup->bv_val, e2.e_name.bv_val, 0 );
+			op->oq_modrdn.rs_newSup = NULL; /* ignore newSuperior */
+		}
+	}
+
+	if ( op->oq_modrdn.rs_newSup != NULL ) {
+		if ( op->oq_modrdn.rs_newSup->bv_len ) {
+			rdn2.nr_num = 0;
+			np_dn = op->oq_modrdn.rs_newSup;
+			np_ndn = op->oq_modrdn.rs_nnewSup;
+
+			/* newSuperior == oldParent? - checked above */
+			/* newSuperior == entry being moved?, if so ==> ERROR */
+			if ( dnIsSuffix( np_ndn, &e.e_nname )) {
+				rs->sr_err = LDAP_NO_SUCH_OBJECT;
+				rs->sr_text = "new superior not found";
+				goto return_results;
+			}
+			/* Get Entry with dn=newSuperior. Does newSuperior exist? */
+
+			e2.e_name = *np_dn;
+			e2.e_nname = *np_ndn;
+			rs->sr_err = ndb_entry_get_info( op, &NA2, 1, NULL );
+			switch( rs->sr_err ) {
+			case 0:
+				break;
+			case LDAP_NO_SUCH_OBJECT:
+				Debug( LDAP_DEBUG_TRACE,
+					LDAP_XSTRING(ndb_back_modrdn)
+					": newSup(ndn=%s) not here!\n",
+					np_ndn->bv_val, 0, 0);
+				rs->sr_text = "new superior not found";
+				goto return_results;
+#if 0
+			case DB_LOCK_DEADLOCK:
+			case DB_LOCK_NOTGRANTED:
+				goto retry;
+#endif
+			case LDAP_BUSY:
+				rs->sr_text = "ldap server busy";
+				goto return_results;
+			default:
+				rs->sr_err = LDAP_OTHER;
+				rs->sr_text = "internal error";
+				goto return_results;
+			}
+			if ( NA2.ocs ) {
+				Attribute a;
+				int i;
+
+				for ( i=0; !BER_BVISNULL( &NA2.ocs[i] ); i++);
+				a.a_numvals = i;
+				a.a_desc = slap_schema.si_ad_objectClass;
+				a.a_vals = NA2.ocs;
+				a.a_nvals = NA2.ocs;
+				a.a_next = NULL;
+				e2.e_attrs = &a;
+
+				if ( is_entry_alias( &e2 )) {
+					/* parent is an alias, don't allow move */
+					Debug( LDAP_DEBUG_TRACE,
+						LDAP_XSTRING(ndb_back_modrdn)
+						": entry is alias\n",
+						0, 0, 0 );
+					rs->sr_text = "new superior is an alias";
+					rs->sr_err = LDAP_ALIAS_PROBLEM;
+					goto return_results;
+				}
+
+				if ( is_entry_referral( &e2 ) ) {
+					/* parent is a referral, don't allow move */
+					Debug( LDAP_DEBUG_TRACE,
+						LDAP_XSTRING(ndb_back_modrdn)
+						": entry is referral\n",
+						0, 0, 0 );
+					rs->sr_text = "new superior is a referral";
+					rs->sr_err = LDAP_OTHER;
+					goto return_results;
+				}
+			}
+		}
+
+		/* check newSuperior for "children" acl */
+		rs->sr_err = access_allowed( op, &e2, children,
+			NULL, ACL_WADD, NULL );
+		if( ! rs->sr_err ) {
+			Debug( LDAP_DEBUG_TRACE,
+				LDAP_XSTRING(ndb_back_modrdn)
+				": no wr to newSup children\n",
+				0, 0, 0 );
+			rs->sr_text = "no write access to new superior's children";
+			rs->sr_err = LDAP_INSUFFICIENT_ACCESS;
+			goto return_results;
+		}
+
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(ndb_back_modrdn)
+			": wr to new parent OK id=%ld\n",
+			(long) e2.e_id, 0, 0 );
+	}
+
+	/* Build target dn and make sure target entry doesn't exist already. */
+	if (!new_dn.bv_val) {
+		build_new_dn( &new_dn, &e2.e_name, &op->oq_modrdn.rs_newrdn, NULL ); 
+	}
+
+	if (!new_ndn.bv_val) {
+		build_new_dn( &new_ndn, &e2.e_nname, &op->oq_modrdn.rs_nnewrdn, NULL ); 
+	}
+
+	Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(ndb_back_modrdn) ": new ndn=%s\n",
+		new_ndn.bv_val, 0, 0 );
+
+	/* Allow rename to same DN */
+	if ( !bvmatch ( &new_ndn, &e.e_nname )) {
+		rdn2.nr_num = 0;
+		e2.e_name = new_dn;
+		e2.e_nname = new_ndn;
+		NA2.ocs = &matched;
+		rs->sr_err = ndb_entry_get_info( op, &NA2, 1, NULL );
+		NA2.ocs = NULL;
+		switch( rs->sr_err ) {
+#if 0
+		case DB_LOCK_DEADLOCK:
+		case DB_LOCK_NOTGRANTED:
+			goto retry;
+#endif
+		case LDAP_NO_SUCH_OBJECT:
+			break;
+		case 0:
+			rs->sr_err = LDAP_ALREADY_EXISTS;
+			goto return_results;
+		default:
+			rs->sr_err = LDAP_OTHER;
+			rs->sr_text = "internal error";
+			goto return_results;
+		}
+	}
+
+	assert( op->orr_modlist != NULL );
+
+	if( op->o_preread ) {
+		if( preread_ctrl == NULL ) {
+			preread_ctrl = &ctrls[num_ctrls++];
+			ctrls[num_ctrls] = NULL;
+		}
+		if( slap_read_controls( op, rs, &e,
+			&slap_pre_read_bv, preread_ctrl ) )
+		{
+			Debug( LDAP_DEBUG_TRACE,        
+				"<=- " LDAP_XSTRING(ndb_back_modrdn)
+				": pre-read failed!\n", 0, 0, 0 );
+			if ( op->o_preread & SLAP_CONTROL_CRITICAL ) {
+				/* FIXME: is it correct to abort
+				 * operation if control fails? */
+				goto return_results;
+			}
+		}                   
+	}
+
+	/* delete old DN */
+	rs->sr_err = ndb_entry_del_info( op->o_bd, &NA );
+	if ( rs->sr_err != 0 ) {
+		Debug(LDAP_DEBUG_TRACE,
+			"<=- " LDAP_XSTRING(ndb_back_modrdn)
+			": dn2id del failed: %s (%d)\n",
+			NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
+#if 0
+		switch( rs->sr_err ) {
+		case DB_LOCK_DEADLOCK:
+		case DB_LOCK_NOTGRANTED:
+			goto retry;
+		}
+#endif
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "DN index delete fail";
+		goto return_results;
+	}
+
+	/* copy entry fields */
+	e2.e_attrs = e.e_attrs;
+	e2.e_id = e.e_id;
+
+	/* add new DN */
+	rs->sr_err = ndb_entry_put_info( op->o_bd, &NA2, 0 );
+	if ( rs->sr_err != 0 ) {
+		Debug(LDAP_DEBUG_TRACE,
+			"<=- " LDAP_XSTRING(ndb_back_modrdn)
+			": dn2id add failed: %s (%d)\n",
+			NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
+#if 0
+		switch( rs->sr_err ) {
+		case DB_LOCK_DEADLOCK:
+		case DB_LOCK_NOTGRANTED:
+			goto retry;
+		}
+#endif
+		rs->sr_err = LDAP_OTHER;
+		rs->sr_text = "DN index add failed";
+		goto return_results;
+	}
+
+	/* modify entry */
+	rs->sr_err = ndb_modify_internal( op, &NA2,
+		&rs->sr_text, textbuf, textlen );
+	if( rs->sr_err != LDAP_SUCCESS ) {
+		Debug(LDAP_DEBUG_TRACE,
+			"<=- " LDAP_XSTRING(ndb_back_modrdn)
+			": modify failed: %s (%d)\n",
+			NA.txn->getNdbError().message, NA.txn->getNdbError().code, 0 );
+#if 0
+		switch( rs->sr_err ) {
+		case DB_LOCK_DEADLOCK:
+		case DB_LOCK_NOTGRANTED:
+			goto retry;
+		}
+#endif
+		goto return_results;
+	}
+
+	e.e_attrs = e2.e_attrs;
+
+	if( op->o_postread ) {
+		if( postread_ctrl == NULL ) {
+			postread_ctrl = &ctrls[num_ctrls++];
+			ctrls[num_ctrls] = NULL;
+		}
+		if( slap_read_controls( op, rs, &e2,
+			&slap_post_read_bv, postread_ctrl ) )
+		{
+			Debug( LDAP_DEBUG_TRACE,        
+				"<=- " LDAP_XSTRING(ndb_back_modrdn)
+				": post-read failed!\n", 0, 0, 0 );
+			if ( op->o_postread & SLAP_CONTROL_CRITICAL ) {
+				/* FIXME: is it correct to abort
+				 * operation if control fails? */
+				goto return_results;
+			}
+		}                   
+	}
+
+	if( op->o_noop ) {
+		if (( rs->sr_err=NA.txn->execute( NdbTransaction::Rollback,
+			NdbOperation::AbortOnError, 1 )) != 0 ) {
+			rs->sr_text = "txn_abort (no-op) failed";
+		} else {
+			rs->sr_err = LDAP_X_NO_OPERATION;
+		}
+	} else {
+		if (( rs->sr_err=NA.txn->execute( NdbTransaction::Commit,
+			NdbOperation::AbortOnError, 1 )) != 0 ) {
+			rs->sr_text = "txn_commit failed";
+		} else {
+			rs->sr_err = LDAP_SUCCESS;
+		}
+	}
+ 
+	if( rs->sr_err != LDAP_SUCCESS && rs->sr_err != LDAP_X_NO_OPERATION ) {
+		Debug( LDAP_DEBUG_TRACE,
+			LDAP_XSTRING(ndb_back_modrdn) ": txn_%s failed: %s (%d)\n",
+			op->o_noop ? "abort (no-op)" : "commit",
+			NA.txn->getNdbError().message, NA.txn->getNdbError().code );
+		rs->sr_err = LDAP_OTHER;
+		goto return_results;
+	}
+	NA.txn->close();
+	NA.txn = NULL;
+
+	Debug(LDAP_DEBUG_TRACE,
+		LDAP_XSTRING(ndb_back_modrdn)
+		": rdn modified%s id=%08lx dn=\"%s\"\n",
+		op->o_noop ? " (no-op)" : "",
+		e.e_id, op->o_req_dn.bv_val );
+
+	rs->sr_err = LDAP_SUCCESS;
+	rs->sr_text = NULL;
+	if( num_ctrls ) rs->sr_ctrls = ctrls;
+
+return_results:
+	if ( NA2.ocs ) {
+		ber_bvarray_free_x( NA2.ocs, op->o_tmpmemctx );
+		NA2.ocs = NULL;
+	}
+
+	if ( NA.ocs ) {
+		ber_bvarray_free_x( NA.ocs, op->o_tmpmemctx );
+		NA.ocs = NULL;
+	}
+
+	if ( e.e_attrs ) {
+		attrs_free( e.e_attrs );
+		e.e_attrs = NULL;
+	}
+
+	if( NA.txn != NULL ) {
+		NA.txn->execute( Rollback );
+		NA.txn->close();
+	}
+
+	send_ldap_result( op, rs );
+	slap_graduate_commit_csn( op );
+
+	if( new_dn.bv_val != NULL ) free( new_dn.bv_val );
+	if( new_ndn.bv_val != NULL ) free( new_ndn.bv_val );
+
+	if( preread_ctrl != NULL && (*preread_ctrl) != NULL ) {
+		slap_sl_free( (*preread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
+		slap_sl_free( *preread_ctrl, op->o_tmpmemctx );
+	}
+	if( postread_ctrl != NULL && (*postread_ctrl) != NULL ) {
+		slap_sl_free( (*postread_ctrl)->ldctl_value.bv_val, op->o_tmpmemctx );
+		slap_sl_free( *postread_ctrl, op->o_tmpmemctx );
+	}
+
+	rs->sr_text = NULL;
+	return rs->sr_err;
+}