diff options
Diffstat (limited to '')
| -rw-r--r-- | servers/slapd/back-wt/modrdn.c | 552 |
1 files changed, 552 insertions, 0 deletions
diff --git a/servers/slapd/back-wt/modrdn.c b/servers/slapd/back-wt/modrdn.c new file mode 100644 index 0000000..faef948 --- /dev/null +++ b/servers/slapd/back-wt/modrdn.c @@ -0,0 +1,552 @@ +/* OpenLDAP WiredTiger backend */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 2002-2022 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 developed by HAMANO Tsukasa <hamano@osstech.co.jp> + * based on back-bdb for inclusion in OpenLDAP Software. + * WiredTiger is a product of MongoDB Inc. + */ + +#include "portable.h" + +#include <stdio.h> +#include "back-wt.h" +#include "slap-config.h" + +int +wt_modrdn( Operation *op, SlapReply *rs ) +{ + struct wt_info *wi = (struct wt_info *) op->o_bd->be_private; + AttributeDescription *children = slap_schema.si_ad_children; + AttributeDescription *entry = slap_schema.si_ad_entry; + wt_ctx *wc = NULL; + Entry *e = NULL; + Entry *p = NULL; + Entry *ne = NULL; + Entry dummy = {0}; + + struct berval p_dn, p_ndn; + struct berval new_dn = {0, NULL}, new_ndn = {0, NULL}; + + Entry *np = NULL; /* newSuperior Entry */ + struct berval *np_dn = NULL; /* newSuperior dn */ + struct berval *np_ndn = NULL; /* newSuperior ndn */ + struct berval *new_parent_dn = NULL; /* np_dn, p_dn, or NULL */ + + int manageDSAit = get_manageDSAit( op ); + char textbuf[SLAP_TEXT_BUFLEN]; + size_t textlen = sizeof textbuf; + LDAPControl **preread_ctrl = NULL; + LDAPControl **postread_ctrl = NULL; + LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS]; + int num_ctrls = 0; + + int rc; + + int parent_is_glue = 0; + int parent_is_leaf = 0; + + Debug( LDAP_DEBUG_TRACE, "==> wt_modrdn(%s -> newrdn=%s - newsup=%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 ); + + wc = wt_ctx_get(op, wi); + if( !wc ){ + Debug( LDAP_DEBUG_ANY, "wt_modrdn: wt_ctx_get failed\n"); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + send_ldap_result( op, rs ); + return rs->sr_err; + } + + /* get parent entry */ + if ( be_issuffix( op->o_bd, &op->o_req_ndn ) ) { + rs->sr_err = LDAP_NAMING_VIOLATION; + rs->sr_text = "cannot rename suffix entry"; + goto return_results; + } else { + dnParent( &op->o_req_ndn, &p_ndn ); + } + + rc = wt_dn2entry(op->o_bd, wc, &p_ndn, &p); + switch( rc ) { + case 0: + break; + case WT_NOTFOUND: + Debug( LDAP_DEBUG_ARGS, + "<== wt_modrdn: parent does not exist %s\n", p_ndn.bv_val); + rs->sr_err = LDAP_NO_SUCH_OBJECT; + goto return_results; + default: + Debug( LDAP_DEBUG_ANY, + "<== wt_modrdn: wt_dn2entry failed (%d)\n", rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + + /* check parent for "children" acl */ + rc = access_allowed( op, p, children, NULL, + op->oq_modrdn.rs_newSup == NULL ? + ACL_WRITE : ACL_WDEL, NULL ); + + if ( !rc ) { + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: no access to parent\n"); + rs->sr_text = "no write access to old parent's children"; + goto return_results; + } + + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: wr to children of entry %s OK\n", p_ndn.bv_val ); + + if ( p_ndn.bv_val == slap_empty_bv.bv_val ) { + p_dn = slap_empty_bv; + } else { + dnParent( &op->o_req_dn, &p_dn ); + } + + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: parent dn=%s\n", p_dn.bv_val ); + + /* get entry */ + rc = wt_dn2entry(op->o_bd, wc, &op->o_req_ndn, &e); + switch( rc ) { + case 0: + break; + case WT_NOTFOUND: + break; + default: + Debug( LDAP_DEBUG_ANY, + "<== wt_modrdn: wt_dn2entry failed (%d)\n", rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + + if ( rc == WT_NOTFOUND || + ( !manageDSAit && e && is_entry_glue( e ) )) { + + if ( !e ) { + Debug( LDAP_DEBUG_ARGS, + "<== wt_modrdn: no such object %s\n", op->o_req_dn.bv_val); + rc = wt_dn2aentry(op->o_bd, wc, &op->o_req_ndn, &e); + switch( rc ) { + case 0: + break; + case WT_NOTFOUND: + rs->sr_err = LDAP_NO_SUCH_OBJECT; + goto return_results; + default: + Debug( LDAP_DEBUG_ANY, "wt_modrdn: wt_dn2aentry failed (%d)\n", rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + } + + rs->sr_matched = ch_strdup( e->e_dn ); + + if ( is_entry_referral( e ) ) { + BerVarray ref = get_entry_referrals( op, e ); + rs->sr_ref = referral_rewrite( ref, &e->e_name, + &op->o_req_dn, LDAP_SCOPE_DEFAULT ); + ber_bvarray_free( ref ); + } else { + rs->sr_ref = NULL; + } + rs->sr_flags = REP_MATCHED_MUSTBEFREED | REP_REF_MUSTBEFREED; + rs->sr_err = LDAP_REFERRAL; + send_ldap_result( op, rs ); + goto done; + } + + if ( get_assert( op ) && + ( test_filter( op, e, get_assertion( op )) != LDAP_COMPARE_TRUE )) + { + rs->sr_err = LDAP_ASSERTION_FAILED; + goto return_results; + } + + /* check write on old entry */ + rc = access_allowed( op, e, entry, NULL, ACL_WRITE, NULL ); + if ( !rc ) { + Debug( LDAP_DEBUG_TRACE, "wt_modrdn: no access to entry\n"); + 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 */ + rc = wt_dn2id_has_children( op, wc, e->e_id ); + if( rc != WT_NOTFOUND ) { + switch( rc ) { + case 0: + Debug(LDAP_DEBUG_ARGS, "<== wt_modrdn: non-leaf %s\n", op->o_req_dn.bv_val); + rs->sr_err = LDAP_NOT_ALLOWED_ON_NONLEAF; + rs->sr_text = "subtree rename not supported"; + break; + default: + Debug(LDAP_DEBUG_ARGS, + "<== wt_modrdn: has_children failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + } + goto return_results; + } + + if (!manageDSAit && is_entry_referral( e ) ) { + /* parent is a referral, don't allow add */ + rs->sr_ref = get_entry_referrals( op, e ); + + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: entry %s is referral\n", e->e_dn ); + + rs->sr_err = LDAP_REFERRAL, + rs->sr_matched = e->e_name.bv_val; + send_ldap_result( op, rs ); + + ber_bvarray_free( rs->sr_ref ); + rs->sr_ref = NULL; + rs->sr_matched = NULL; + goto done; + } + + new_parent_dn = &p_dn; /* New Parent unless newSuperior given */ + if ( op->oq_modrdn.rs_newSup != NULL ) { + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: new parent \"%s\" requested...\n", + op->oq_modrdn.rs_newSup->bv_val ); + + /* newSuperior == oldParent? */ + if( dn_match( &p_ndn, op->oq_modrdn.rs_nnewSup ) ) { + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: new parent \"%s\" same as the old parent \"%s\"\n", + op->oq_modrdn.rs_newSup->bv_val, p_dn.bv_val ); + op->oq_modrdn.rs_newSup = NULL; /* ignore newSuperior */ + } + } + + if ( op->oq_modrdn.rs_newSup != NULL ) { + if ( op->oq_modrdn.rs_newSup->bv_len ) { + 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? */ + rc = wt_dn2entry(op->o_bd, wc, np_ndn, &np); + switch( rc ) { + case 0: + break; + case WT_NOTFOUND: + Debug( LDAP_DEBUG_ANY, + "<== wt_modrdn: new superior not found: %s\n", + np_ndn->bv_val ); + rs->sr_err = LDAP_NO_SUCH_OBJECT; + rs->sr_text = "new superior not found"; + goto return_results; + default: + Debug( LDAP_DEBUG_ANY, + "<== wt_modrdn: wt_dn2entry failed %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: wr to new parent OK np=%p, id=%ld\n", + (void *) np, (long) np->e_id ); + rs->sr_err = access_allowed( op, np, children, + NULL, ACL_WADD, NULL ); + if( ! rs->sr_err ) { + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: no wr to newSup children\n" ); + rs->sr_text = "no write access to new superior's children"; + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + goto return_results; + } + if ( is_entry_alias( np ) ) { + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: entry is alias\n" ); + rs->sr_text = "new superior is an alias"; + rs->sr_err = LDAP_ALIAS_PROBLEM; + goto return_results; + } + if ( is_entry_referral( np ) ) { + /* parent is a referral, don't allow add */ + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: entry is referral\n" ); + rs->sr_text = "new superior is a referral"; + rs->sr_err = LDAP_OTHER; + goto return_results; + } + } else { + /* no parent, modrdn entry directly under root */ + /* TODO: */ + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: no parent, not implement yet\n" ); + rs->sr_text = "not implement yet"; + rs->sr_err = LDAP_OTHER; + goto return_results; + } + + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: wr to new parent's children OK\n" ); + new_parent_dn = np_dn; + } + + /* Build target dn and make sure target entry doesn't exist already. */ + if (!new_dn.bv_val) { + build_new_dn( &new_dn, new_parent_dn, &op->oq_modrdn.rs_newrdn, NULL ); + } + + if (!new_ndn.bv_val) { + struct berval bv = {0, NULL}; + dnNormalize( 0, NULL, NULL, &new_dn, &bv, op->o_tmpmemctx ); + ber_dupbv( &new_ndn, &bv ); + /* FIXME: why not call dnNormalize() w/o ctx? */ + op->o_tmpfree( bv.bv_val, op->o_tmpmemctx ); + } + + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: new ndn=%s\n", new_ndn.bv_val ); + + /* check new entry */ + rc = wt_dn2entry(op->o_bd, wc, &new_ndn, &ne); + switch( rc ) { + case 0: + /* Allow rename to same DN */ + if(e->e_id == ne->e_id){ + break; + } + rs->sr_err = LDAP_ALREADY_EXISTS; + goto return_results; + break; + case WT_NOTFOUND: + break; + default: + Debug( LDAP_DEBUG_ANY, + "<== wt_modrdn: wt_dn2entry failed %s (%d)\n", + wiredtiger_strerror(rc), rc ); + 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, + "<== wt_modrdn: pre-read failed!\n" ); + if ( op->o_preread & SLAP_CONTROL_CRITICAL ) { + /* FIXME: is it correct to abort + * operation if control fails? */ + goto return_results; + } + } + } + + /* begin transaction */ + rc = wc->session->begin_transaction(wc->session, NULL); + if( rc ) { + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: begin_transaction failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "begin_transaction failed"; + goto return_results; + } + wc->is_begin_transaction = 1; + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: session id: %p\n", wc->session ); + + /* delete old DN */ + rc = wt_dn2id_delete( op, wc, &e->e_nname); + if ( rc ) { + Debug(LDAP_DEBUG_TRACE, + "<== wt_modrdn: delete failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "dn2id delete failed"; + goto return_results; + } + + /* copy the entry, then override some fields */ + dummy = *e; + dummy.e_name = new_dn; + dummy.e_nname = new_ndn; + dummy.e_attrs = NULL; + + /* add new DN */ + rc = wt_dn2id_add( op, wc, np?np->e_id:p->e_id, &dummy ); + if ( rc ) { + Debug(LDAP_DEBUG_TRACE, + "<== wt_modrdn: add failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "DN add failed"; + goto return_results; + } + dummy.e_attrs = e->e_attrs; + + rc = wt_modify_internal( op, wc, op->orm_modlist, + &dummy, &rs->sr_text, textbuf, textlen ); + if( rc != LDAP_SUCCESS ) { + Debug(LDAP_DEBUG_TRACE, + "<== wt_modrdn: modify failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + if ( dummy.e_attrs == e->e_attrs ) dummy.e_attrs = NULL; + goto return_results; + } + + /* update entry */ + rc = wt_id2entry_update( op, wc, &dummy ); + if ( rc != 0 ) { + Debug( LDAP_DEBUG_TRACE, + "wt_modrdn: id2entry update failed(%d)\n", rc ); + if ( rc == LDAP_ADMINLIMIT_EXCEEDED ) { + rs->sr_text = "entry too big"; + } else { + rs->sr_err = LDAP_OTHER; + rs->sr_text = "entry update failed"; + } + goto return_results; + } + + if ( p_ndn.bv_len != 0 ) { + parent_is_glue = is_entry_glue(p); + /* TODO: glue entry handling */ + } + + if( op->o_postread ) { + if( postread_ctrl == NULL ) { + postread_ctrl = &ctrls[num_ctrls++]; + ctrls[num_ctrls] = NULL; + } + if( slap_read_controls( op, rs, &dummy, + &slap_post_read_bv, postread_ctrl ) ) + { + Debug( LDAP_DEBUG_TRACE, + "<== wt_modrdn: post-read failed!\n" ); + if ( op->o_postread & SLAP_CONTROL_CRITICAL ) { + /* FIXME: is it correct to abort + * operation if control fails? */ + goto return_results; + } + } + } + + if( op->o_noop ) { + rs->sr_err = LDAP_X_NO_OPERATION; + goto return_results; + } + + rc = wc->session->commit_transaction(wc->session, NULL); + wc->is_begin_transaction = 0; + if( rc ) { + Debug( LDAP_DEBUG_TRACE, + "<== wt_modrdn: commit failed: %s (%d)\n", + wiredtiger_strerror(rc), rc ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "commit failed"; + goto return_results; + } + + Debug(LDAP_DEBUG_TRACE, + "wt_modrdn: rdn modified%s id=%08lx dn=\"%s\"\n", + op->o_noop ? " (no-op)" : "", + dummy.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 ( dummy.e_attrs ) { + attrs_free( dummy.e_attrs ); + } + send_ldap_result( op, rs ); + + if ( rs->sr_err == LDAP_SUCCESS && parent_is_glue && parent_is_leaf ) { + op->o_delete_glue_parent = 1; + } + +done: + if( wc && wc->is_begin_transaction ){ + Debug( LDAP_DEBUG_TRACE, "wt_modrdn: rollback transaction\n" ); + wc->session->rollback_transaction(wc->session, NULL); + wc->is_begin_transaction = 0; + } + + 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 ); + + /* free entry */ + if( e != NULL ) { + wt_entry_return( e ); + } + /* free parent entry */ + if( p != NULL ) { + wt_entry_return( p ); + } + /* free new entry */ + if( ne != NULL ) { + wt_entry_return( ne ); + } + /* free new parent entry */ + if( np != NULL ) { + wt_entry_return( np ); + } + + 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 ); + } + return rs->sr_err; +} + +/* + * Local variables: + * indent-tabs-mode: t + * tab-width: 4 + * c-basic-offset: 4 + * End: + */ |