diff options
Diffstat (limited to 'servers/slapd/back-ndb/modrdn.cpp')
| -rw-r--r-- | servers/slapd/back-ndb/modrdn.cpp | 558 |
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; +} |