From b527294153be3b79563c82c66102adc0004736c0 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Mon, 15 Apr 2024 19:54:12 +0200 Subject: Adding upstream version 2.6.7+dfsg. Signed-off-by: Daniel Baumann --- servers/slapd/back-mdb/modrdn.c | 612 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 612 insertions(+) create mode 100644 servers/slapd/back-mdb/modrdn.c (limited to 'servers/slapd/back-mdb/modrdn.c') diff --git a/servers/slapd/back-mdb/modrdn.c b/servers/slapd/back-mdb/modrdn.c new file mode 100644 index 0000000..840812c --- /dev/null +++ b/servers/slapd/back-mdb/modrdn.c @@ -0,0 +1,612 @@ +/* modrdn.c - mdb backend modrdn routine */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software . + * + * Copyright 2000-2022 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 + * . + */ + +#include "portable.h" + +#include +#include + +#include "back-mdb.h" + +int +mdb_modrdn( Operation *op, SlapReply *rs ) +{ + struct mdb_info *mdb = (struct mdb_info *) op->o_bd->be_private; + AttributeDescription *children = slap_schema.si_ad_children; + AttributeDescription *entry = slap_schema.si_ad_entry; + struct berval p_dn, p_ndn; + Entry *e = NULL; + Entry *p = NULL; + /* LDAP v2 supporting correct attribute handling. */ + char textbuf[SLAP_TEXT_BUFLEN]; + size_t textlen = sizeof textbuf; + MDB_txn *txn = NULL; + MDB_cursor *mc; + struct mdb_op_info opinfo = {{{ 0 }}}, *moi = &opinfo; + Entry dummy = {0}; + + 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 ); + + ID nid, nsubs; + LDAPControl **preread_ctrl = NULL; + LDAPControl **postread_ctrl = NULL; + LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS]; + int num_ctrls = 0; + + int parent_is_glue = 0; + int parent_is_leaf = 0; + + Debug( LDAP_DEBUG_TRACE, "==>" LDAP_XSTRING(mdb_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; + + /* begin transaction */ + rs->sr_err = mdb_opinfo_get( op, mdb, 0, &moi ); + rs->sr_text = NULL; + if( rs->sr_err != 0 ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(mdb_modrdn) ": txn_begin failed: " + "%s (%d)\n", mdb_strerror(rs->sr_err), rs->sr_err ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + txn = moi->moi_txn; + + slap_mods_opattrs( op, &op->orr_modlist, 1 ); + + if ( be_issuffix( op->o_bd, &op->o_req_ndn ) ) { +#ifdef MDB_MULTIPLE_SUFFIXES + /* Allow renaming one suffix entry to another */ + p_ndn = slap_empty_bv; +#else + /* There can only be one suffix entry */ + rs->sr_err = LDAP_NAMING_VIOLATION; + rs->sr_text = "cannot rename suffix entry"; + goto return_results; +#endif + } else { + dnParent( &op->o_req_ndn, &p_ndn ); + } + np_ndn = &p_ndn; + /* Make sure parent entry exist and we can write its + * children. + */ + rs->sr_err = mdb_cursor_open( txn, mdb->mi_dn2id, &mc ); + if ( rs->sr_err != 0 ) { + Debug(LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(mdb_modrdn) + ": cursor_open failed: %s (%d)\n", + mdb_strerror(rs->sr_err), rs->sr_err ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "DN cursor_open failed"; + goto return_results; + } + rs->sr_err = mdb_dn2entry( op, txn, mc, &p_ndn, &p, NULL, 0 ); + switch( rs->sr_err ) { + case MDB_NOTFOUND: + Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(mdb_modrdn) + ": parent does not exist\n" ); + rs->sr_ref = referral_rewrite( default_referral, NULL, + &op->o_req_dn, LDAP_SCOPE_DEFAULT ); + rs->sr_err = LDAP_REFERRAL; + + send_ldap_result( op, rs ); + + ber_bvarray_free( rs->sr_ref ); + goto done; + case 0: + break; + 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; + } + + /* check parent for "children" acl */ + rs->sr_err = access_allowed( op, p, + 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" ); + rs->sr_text = "no write access to parent's children"; + goto return_results; + } + + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(mdb_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, + LDAP_XSTRING(mdb_modrdn) ": parent dn=%s\n", + p_dn.bv_val ); + + /* get entry */ + rs->sr_err = mdb_dn2entry( op, txn, mc, &op->o_req_ndn, &e, &nsubs, 0 ); + switch( rs->sr_err ) { + case MDB_NOTFOUND: + e = p; + p = NULL; + case 0: + break; + 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; + } + + /* FIXME: dn2entry() should return non-glue entry */ + if (( rs->sr_err == MDB_NOTFOUND ) || + ( !manageDSAit && e && is_entry_glue( e ))) + { + if( e != NULL ) { + 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; + } + mdb_entry_return( op, e ); + e = NULL; + + } else { + rs->sr_ref = referral_rewrite( default_referral, NULL, + &op->o_req_dn, LDAP_SCOPE_DEFAULT ); + } + + rs->sr_err = LDAP_REFERRAL; + send_ldap_result( op, rs ); + + ber_bvarray_free( rs->sr_ref ); + free( (char *)rs->sr_matched ); + rs->sr_ref = NULL; + rs->sr_matched = NULL; + + 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 */ + 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" ); + rs->sr_text = "no write access to old entry"; + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + goto return_results; + } + + if (!manageDSAit && is_entry_referral( e ) ) { + /* entry is a referral, don't allow rename */ + rs->sr_ref = get_entry_referrals( op, e ); + + Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(mdb_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, + LDAP_XSTRING(mdb_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, "mdb_back_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 */ + } + } + + /* There's a MDB_MULTIPLE_SUFFIXES case here that this code doesn't + * support. E.g., two suffixes dc=foo,dc=com and dc=bar,dc=net. + * We do not allow modDN + * dc=foo,dc=com + * newrdn dc=bar + * newsup dc=net + * and we probably should. But since MULTIPLE_SUFFIXES is deprecated + * I'm ignoring this problem for now. + */ + 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? */ + rs->sr_err = mdb_dn2entry( op, txn, NULL, np_ndn, &np, NULL, 0 ); + + switch( rs->sr_err ) { + case 0: + break; + case MDB_NOTFOUND: + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(mdb_modrdn) + ": newSup(ndn=%s) not here!\n", + np_ndn->bv_val ); + rs->sr_text = "new superior not found"; + rs->sr_err = LDAP_NO_SUCH_OBJECT; + goto return_results; + 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; + } + + /* check newSuperior for "children" acl */ + rs->sr_err = access_allowed( op, np, children, + NULL, ACL_WADD, NULL ); + + if( ! rs->sr_err ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(mdb_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; + } + + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(mdb_modrdn) + ": wr to new parent OK np=%p, id=%ld\n", + (void *) np, (long) np->e_id ); + + if ( is_entry_alias( np ) ) { + /* parent is an alias, don't allow add */ + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(mdb_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, + LDAP_XSTRING(mdb_modrdn) + ": entry is referral\n" ); + rs->sr_text = "new superior is a referral"; + rs->sr_err = LDAP_OTHER; + goto return_results; + } + np_dn = &np->e_name; + + } else { + np_dn = NULL; + + /* no parent, modrdn entry directly under root */ + if ( be_issuffix( op->o_bd, (struct berval *)&slap_empty_bv ) + || be_isupdate( op ) ) { + np = (Entry *)&slap_entry_root; + + /* check parent for "children" acl */ + rs->sr_err = access_allowed( op, np, + children, NULL, ACL_WADD, NULL ); + + np = NULL; + + if ( ! rs->sr_err ) { + rs->sr_err = LDAP_INSUFFICIENT_ACCESS; + Debug( LDAP_DEBUG_TRACE, + "no access to new superior\n" ); + rs->sr_text = + "no write access to new superior's children"; + goto return_results; + } + } + } + + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(mdb_modrdn) + ": wr to new parent's children OK\n" ); + + new_parent_dn = np_dn; + } + + /* Make sure target entry doesn't exist already. */ + Debug( LDAP_DEBUG_TRACE, LDAP_XSTRING(mdb_modrdn) ": new ndn=%s\n", + op->orr_nnewDN.bv_val ); + + /* Shortcut the search */ + rs->sr_err = mdb_dn2id ( op, txn, NULL, &op->orr_nnewDN, &nid, NULL, NULL, NULL ); + switch( rs->sr_err ) { + case MDB_NOTFOUND: + break; + case 0: + /* Allow rename to same DN */ + if ( nid == e->e_id ) + break; + rs->sr_err = LDAP_ALREADY_EXISTS; + goto return_results; + default: + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + + 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(mdb_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; + } + } + } + + /* delete old DN + * If moving to a new parent, must delete current subtree count, + * otherwise leave it unchanged since we'll be adding it right back. + */ + rs->sr_err = mdb_dn2id_delete( op, mc, e->e_id, np ? nsubs : 0 ); + if ( rs->sr_err != 0 ) { + Debug(LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(mdb_modrdn) + ": dn2id del failed: %s (%d)\n", + mdb_strerror(rs->sr_err), rs->sr_err ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "DN index delete fail"; + goto return_results; + } + + /* copy the entry, then override some fields */ + dummy = *e; + dummy.e_name = op->orr_newDN; + dummy.e_nname = op->orr_nnewDN; + dummy.e_attrs = NULL; + + /* add new DN */ + rs->sr_err = mdb_dn2id_add( op, mc, mc, np ? np->e_id : p->e_id, + nsubs, np != NULL, &dummy ); + if ( rs->sr_err != 0 ) { + Debug(LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(mdb_modrdn) + ": dn2id add failed: %s (%d)\n", + mdb_strerror(rs->sr_err), rs->sr_err ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "DN index add failed"; + goto return_results; + } + + dummy.e_attrs = e->e_attrs; + + if ( op->orr_modlist != NULL ) { + /* modify entry */ + rs->sr_err = mdb_modify_internal( op, txn, op->orr_modlist, &dummy, + &rs->sr_text, textbuf, textlen ); + if( rs->sr_err != LDAP_SUCCESS ) { + Debug(LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(mdb_modrdn) + ": modify failed: %s (%d)\n", + mdb_strerror(rs->sr_err), rs->sr_err ); + goto return_results; + } + } + + /* id2entry index */ + rs->sr_err = mdb_id2entry_update( op, txn, NULL, &dummy ); + if ( rs->sr_err != 0 ) { + Debug(LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(mdb_modrdn) + ": id2entry failed: %s (%d)\n", + mdb_strerror(rs->sr_err), rs->sr_err ); + if ( rs->sr_err == 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 ) { + if ((parent_is_glue = is_entry_glue(p))) { + rs->sr_err = mdb_dn2id_children( op, txn, p ); + if ( rs->sr_err != MDB_NOTFOUND ) { + switch( rs->sr_err ) { + case 0: + break; + default: + Debug(LDAP_DEBUG_ARGS, + "<=- " LDAP_XSTRING(mdb_modrdn) + ": has_children failed: %s (%d)\n", + mdb_strerror(rs->sr_err), rs->sr_err ); + rs->sr_err = LDAP_OTHER; + rs->sr_text = "internal error"; + goto return_results; + } + } else { + parent_is_leaf = 1; + } + } + mdb_entry_return( op, p ); + p = NULL; + } + + 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, + "<=- " LDAP_XSTRING(mdb_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( moi == &opinfo ) { + LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.moi_oe, OpExtra, oe_next ); + opinfo.moi_oe.oe_key = NULL; + if( op->o_noop ) { + mdb_txn_abort( txn ); + rs->sr_err = LDAP_X_NO_OPERATION; + txn = NULL; + goto return_results; + + } else { + if(( rs->sr_err=mdb_txn_commit( txn )) != 0 ) { + rs->sr_text = "txn_commit failed"; + } else { + rs->sr_err = LDAP_SUCCESS; + } + txn = NULL; + } + } + + if( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, + LDAP_XSTRING(mdb_modrdn) ": %s : %s (%d)\n", + rs->sr_text, mdb_strerror(rs->sr_err), rs->sr_err ); + rs->sr_err = LDAP_OTHER; + + goto return_results; + } + + Debug(LDAP_DEBUG_TRACE, + LDAP_XSTRING(mdb_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_text = NULL; + if( num_ctrls ) rs->sr_ctrls = ctrls; + +return_results: + if ( e != NULL && dummy.e_attrs != e->e_attrs ) { + attrs_free( dummy.e_attrs ); + } + send_ldap_result( op, rs ); + +#if 0 + if( rs->sr_err == LDAP_SUCCESS && mdb->bi_txn_cp_kbyte ) { + TXN_CHECKPOINT( mdb->bi_dbenv, + mdb->bi_txn_cp_kbyte, mdb->bi_txn_cp_min, 0 ); + } +#endif + + if ( rs->sr_err == LDAP_SUCCESS && parent_is_glue && parent_is_leaf ) { + op->o_delete_glue_parent = 1; + } + +done: + slap_graduate_commit_csn( op ); + + /* LDAP v3 Support */ + if( np != NULL ) { + /* free new parent */ + mdb_entry_return( op, np ); + } + + if( p != NULL ) { + /* free parent */ + mdb_entry_return( op, p ); + } + + /* free entry */ + if( e != NULL ) { + mdb_entry_return( op, e ); + } + + if( moi == &opinfo ) { + if( txn != NULL ) { + mdb_txn_abort( txn ); + } + if ( opinfo.moi_oe.oe_key ) { + LDAP_SLIST_REMOVE( &op->o_extra, &opinfo.moi_oe, OpExtra, oe_next ); + } + } else { + moi->moi_ref--; + } + + 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; +} -- cgit v1.2.3