diff options
Diffstat (limited to 'servers/slapd/back-ndb/modify.cpp')
-rw-r--r-- | servers/slapd/back-ndb/modify.cpp | 704 |
1 files changed, 704 insertions, 0 deletions
diff --git a/servers/slapd/back-ndb/modify.cpp b/servers/slapd/back-ndb/modify.cpp new file mode 100644 index 0000000..ba9c522 --- /dev/null +++ b/servers/slapd/back-ndb/modify.cpp @@ -0,0 +1,704 @@ +/* modify.cpp - ndb backend modify routine */ +/* $OpenLDAP$ */ +/* This work is part of OpenLDAP Software <http://www.openldap.org/>. + * + * Copyright 2008-2021 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>. + */ +/* 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 <ac/time.h> + +#include "back-ndb.h" + +/* This is a copy from slapd/mods.c, but with compaction tweaked + * to swap values from the tail into deleted slots, to reduce the + * overall update traffic. + */ +static int +ndb_modify_delete( + Entry *e, + Modification *mod, + int permissive, + const char **text, + char *textbuf, size_t textlen, + int *idx ) +{ + Attribute *a; + MatchingRule *mr = mod->sm_desc->ad_type->sat_equality; + struct berval *cvals; + int *id2 = NULL; + int i, j, rc = 0, num; + unsigned flags; + char dummy = '\0'; + + /* For ordered vals, we have no choice but to preserve order */ + if ( mod->sm_desc->ad_type->sat_flags & SLAP_AT_ORDERED_VAL ) + return modify_delete_vindex( e, mod, permissive, text, + textbuf, textlen, idx ); + + /* + * If permissive is set, then the non-existence of an + * attribute is not treated as an error. + */ + + /* delete the entire attribute */ + if ( mod->sm_values == NULL ) { + rc = attr_delete( &e->e_attrs, mod->sm_desc ); + + if( permissive ) { + rc = LDAP_SUCCESS; + } else if( rc != LDAP_SUCCESS ) { + *text = textbuf; + snprintf( textbuf, textlen, + "modify/delete: %s: no such attribute", + mod->sm_desc->ad_cname.bv_val ); + rc = LDAP_NO_SUCH_ATTRIBUTE; + } + return rc; + } + + /* FIXME: Catch old code that doesn't set sm_numvals. + */ + if ( !BER_BVISNULL( &mod->sm_values[mod->sm_numvals] )) { + for ( i = 0; !BER_BVISNULL( &mod->sm_values[i] ); i++ ); + assert( mod->sm_numvals == i ); + } + if ( !idx ) { + id2 = (int *)ch_malloc( mod->sm_numvals * sizeof( int )); + idx = id2; + } + + if( mr == NULL || !mr->smr_match ) { + /* disallow specific attributes from being deleted if + no equality rule */ + *text = textbuf; + snprintf( textbuf, textlen, + "modify/delete: %s: no equality matching rule", + mod->sm_desc->ad_cname.bv_val ); + rc = LDAP_INAPPROPRIATE_MATCHING; + goto return_result; + } + + /* delete specific values - find the attribute first */ + if ( (a = attr_find( e->e_attrs, mod->sm_desc )) == NULL ) { + if( permissive ) { + rc = LDAP_SUCCESS; + goto return_result; + } + *text = textbuf; + snprintf( textbuf, textlen, + "modify/delete: %s: no such attribute", + mod->sm_desc->ad_cname.bv_val ); + rc = LDAP_NO_SUCH_ATTRIBUTE; + goto return_result; + } + + if ( mod->sm_nvalues ) { + flags = SLAP_MR_EQUALITY | SLAP_MR_VALUE_OF_ASSERTION_SYNTAX + | SLAP_MR_ASSERTED_VALUE_NORMALIZED_MATCH + | SLAP_MR_ATTRIBUTE_VALUE_NORMALIZED_MATCH; + cvals = mod->sm_nvalues; + } else { + flags = SLAP_MR_EQUALITY | SLAP_MR_VALUE_OF_ASSERTION_SYNTAX; + cvals = mod->sm_values; + } + + /* Locate values to delete */ + for ( i = 0; !BER_BVISNULL( &mod->sm_values[i] ); i++ ) { + unsigned sort; + rc = attr_valfind( a, flags, &cvals[i], &sort, NULL ); + if ( rc == LDAP_SUCCESS ) { + idx[i] = sort; + } else if ( rc == LDAP_NO_SUCH_ATTRIBUTE ) { + if ( permissive ) { + idx[i] = -1; + continue; + } + *text = textbuf; + snprintf( textbuf, textlen, + "modify/delete: %s: no such value", + mod->sm_desc->ad_cname.bv_val ); + goto return_result; + } else { + *text = textbuf; + snprintf( textbuf, textlen, + "modify/delete: %s: matching rule failed", + mod->sm_desc->ad_cname.bv_val ); + goto return_result; + } + } + + num = a->a_numvals; + + /* Delete the values */ + for ( i = 0; i < mod->sm_numvals; i++ ) { + /* Skip permissive values that weren't found */ + if ( idx[i] < 0 ) + continue; + /* Skip duplicate delete specs */ + if ( a->a_vals[idx[i]].bv_val == &dummy ) + continue; + /* delete value and mark it as gone */ + free( a->a_vals[idx[i]].bv_val ); + a->a_vals[idx[i]].bv_val = &dummy; + if( a->a_nvals != a->a_vals ) { + free( a->a_nvals[idx[i]].bv_val ); + a->a_nvals[idx[i]].bv_val = &dummy; + } + a->a_numvals--; + } + + /* compact array */ + for ( i=0; i<num; i++ ) { + if ( a->a_vals[i].bv_val != &dummy ) + continue; + for ( --num; num > i && a->a_vals[num].bv_val == &dummy; num-- ) + ; + a->a_vals[i] = a->a_vals[num]; + if ( a->a_nvals != a->a_vals ) + a->a_nvals[i] = a->a_nvals[num]; + } + + BER_BVZERO( &a->a_vals[num] ); + if (a->a_nvals != a->a_vals) { + BER_BVZERO( &a->a_nvals[num] ); + } + + /* if no values remain, delete the entire attribute */ + if ( !a->a_numvals ) { + if ( attr_delete( &e->e_attrs, mod->sm_desc ) ) { + /* Can never happen */ + *text = textbuf; + snprintf( textbuf, textlen, + "modify/delete: %s: no such attribute", + mod->sm_desc->ad_cname.bv_val ); + rc = LDAP_NO_SUCH_ATTRIBUTE; + } + } +return_result: + if ( id2 ) + ch_free( id2 ); + return rc; +} + +int ndb_modify_internal( + Operation *op, + NdbArgs *NA, + const char **text, + char *textbuf, + size_t textlen ) +{ + struct ndb_info *ni = (struct ndb_info *) op->o_bd->be_private; + Modification *mod; + Modifications *ml; + Modifications *modlist = op->orm_modlist; + NdbAttrInfo **modai, *atmp; + const NdbDictionary::Dictionary *myDict; + const NdbDictionary::Table *myTable; + int got_oc = 0, nmods = 0, nai = 0, i, j; + int rc, indexed = 0; + Attribute *old = NULL; + + Debug( LDAP_DEBUG_TRACE, "ndb_modify_internal: 0x%08lx: %s\n", + NA->e->e_id, NA->e->e_dn, 0); + + if ( !acl_check_modlist( op, NA->e, modlist )) { + return LDAP_INSUFFICIENT_ACCESS; + } + + old = attrs_dup( NA->e->e_attrs ); + + for ( ml = modlist; ml != NULL; ml = ml->sml_next ) { + mod = &ml->sml_mod; + nmods++; + + switch ( mod->sm_op ) { + case LDAP_MOD_ADD: + Debug(LDAP_DEBUG_ARGS, + "ndb_modify_internal: add %s\n", + mod->sm_desc->ad_cname.bv_val, 0, 0); + rc = modify_add_values( NA->e, mod, get_permissiveModify(op), + text, textbuf, textlen ); + if( rc != LDAP_SUCCESS ) { + Debug(LDAP_DEBUG_ARGS, "ndb_modify_internal: %d %s\n", + rc, *text, 0); + } + break; + + case LDAP_MOD_DELETE: + Debug(LDAP_DEBUG_ARGS, + "ndb_modify_internal: delete %s\n", + mod->sm_desc->ad_cname.bv_val, 0, 0); + rc = ndb_modify_delete( NA->e, mod, get_permissiveModify(op), + text, textbuf, textlen, NULL ); + assert( rc != LDAP_TYPE_OR_VALUE_EXISTS ); + if( rc != LDAP_SUCCESS ) { + Debug(LDAP_DEBUG_ARGS, "ndb_modify_internal: %d %s\n", + rc, *text, 0); + } + break; + + case LDAP_MOD_REPLACE: + Debug(LDAP_DEBUG_ARGS, + "ndb_modify_internal: replace %s\n", + mod->sm_desc->ad_cname.bv_val, 0, 0); + rc = modify_replace_values( NA->e, mod, get_permissiveModify(op), + text, textbuf, textlen ); + if( rc != LDAP_SUCCESS ) { + Debug(LDAP_DEBUG_ARGS, "ndb_modify_internal: %d %s\n", + rc, *text, 0); + } + break; + + case LDAP_MOD_INCREMENT: + Debug(LDAP_DEBUG_ARGS, + "ndb_modify_internal: increment %s\n", + mod->sm_desc->ad_cname.bv_val, 0, 0); + rc = modify_increment_values( NA->e, mod, get_permissiveModify(op), + text, textbuf, textlen ); + if( rc != LDAP_SUCCESS ) { + Debug(LDAP_DEBUG_ARGS, + "ndb_modify_internal: %d %s\n", + rc, *text, 0); + } + break; + + case SLAP_MOD_SOFTADD: + Debug(LDAP_DEBUG_ARGS, + "ndb_modify_internal: softadd %s\n", + mod->sm_desc->ad_cname.bv_val, 0, 0); + mod->sm_op = LDAP_MOD_ADD; + + rc = modify_add_values( NA->e, mod, get_permissiveModify(op), + text, textbuf, textlen ); + + mod->sm_op = SLAP_MOD_SOFTADD; + + if ( rc == LDAP_TYPE_OR_VALUE_EXISTS ) { + rc = LDAP_SUCCESS; + } + + if( rc != LDAP_SUCCESS ) { + Debug(LDAP_DEBUG_ARGS, "ndb_modify_internal: %d %s\n", + rc, *text, 0); + } + break; + + case SLAP_MOD_SOFTDEL: + Debug(LDAP_DEBUG_ARGS, + "ndb_modify_internal: softdel %s\n", + mod->sm_desc->ad_cname.bv_val, 0, 0); + mod->sm_op = LDAP_MOD_DELETE; + + rc = modify_delete_values( NA->e, mod, get_permissiveModify(op), + text, textbuf, textlen ); + + mod->sm_op = SLAP_MOD_SOFTDEL; + + if ( rc == LDAP_NO_SUCH_ATTRIBUTE) { + rc = LDAP_SUCCESS; + } + + if( rc != LDAP_SUCCESS ) { + Debug(LDAP_DEBUG_ARGS, "ndb_modify_internal: %d %s\n", + rc, *text, 0); + } + break; + + case SLAP_MOD_ADD_IF_NOT_PRESENT: + Debug(LDAP_DEBUG_ARGS, + "ndb_modify_internal: add_if_not_present %s\n", + mod->sm_desc->ad_cname.bv_val, 0, 0); + if ( attr_find( NA->e->e_attrs, mod->sm_desc ) ) { + rc = LDAP_SUCCESS; + break; + } + + mod->sm_op = LDAP_MOD_ADD; + + rc = modify_add_values( NA->e, mod, get_permissiveModify(op), + text, textbuf, textlen ); + + mod->sm_op = SLAP_MOD_ADD_IF_NOT_PRESENT; + + if( rc != LDAP_SUCCESS ) { + Debug(LDAP_DEBUG_ARGS, "ndb_modify_internal: %d %s\n", + rc, *text, 0); + } + break; + + default: + Debug(LDAP_DEBUG_ANY, "ndb_modify_internal: invalid op %d\n", + mod->sm_op, 0, 0); + *text = "Invalid modify operation"; + rc = LDAP_OTHER; + Debug(LDAP_DEBUG_ARGS, "ndb_modify_internal: %d %s\n", + rc, *text, 0); + } + + if ( rc != LDAP_SUCCESS ) { + attrs_free( old ); + return rc; + } + + /* If objectClass was modified, reset the flags */ + if ( mod->sm_desc == slap_schema.si_ad_objectClass ) { + NA->e->e_ocflags = 0; + got_oc = 1; + } + } + + /* check that the entry still obeys the schema */ + rc = entry_schema_check( op, NA->e, NULL, get_relax(op), 0, NULL, + text, textbuf, textlen ); + if ( rc != LDAP_SUCCESS || op->o_noop ) { + if ( rc != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_ANY, + "entry failed schema check: %s\n", + *text, 0, 0 ); + } + attrs_free( old ); + return rc; + } + + if ( got_oc ) { + rc = ndb_entry_put_info( op->o_bd, NA, 1 ); + if ( rc ) { + attrs_free( old ); + return rc; + } + } + + /* apply modifications to DB */ + modai = (NdbAttrInfo **)op->o_tmpalloc( nmods * sizeof(NdbAttrInfo*), op->o_tmpmemctx ); + + /* Get the unique list of modified attributes */ + ldap_pvt_thread_rdwr_rlock( &ni->ni_ai_rwlock ); + for ( ml = modlist; ml != NULL; ml = ml->sml_next ) { + /* Already took care of objectclass */ + if ( ml->sml_desc == slap_schema.si_ad_objectClass ) + continue; + for ( i=0; i<nai; i++ ) { + if ( ml->sml_desc->ad_type == modai[i]->na_attr ) + break; + } + /* This attr was already updated */ + if ( i < nai ) + continue; + modai[nai] = ndb_ai_find( ni, ml->sml_desc->ad_type ); + if ( modai[nai]->na_flag & NDB_INFO_INDEX ) + indexed++; + nai++; + } + ldap_pvt_thread_rdwr_runlock( &ni->ni_ai_rwlock ); + + /* If got_oc, this was already done above */ + if ( indexed && !got_oc) { + rc = ndb_entry_put_info( op->o_bd, NA, 1 ); + if ( rc ) { + attrs_free( old ); + return rc; + } + } + + myDict = NA->ndb->getDictionary(); + + /* sort modai so that OcInfo's are contiguous */ + { + int j, k; + for ( i=0; i<nai; i++ ) { + for ( j=i+1; j<nai; j++ ) { + if ( modai[i]->na_oi == modai[j]->na_oi ) + continue; + for ( k=j+1; k<nai; k++ ) { + if ( modai[i]->na_oi == modai[k]->na_oi ) { + atmp = modai[j]; + modai[j] = modai[k]; + modai[k] = atmp; + break; + } + } + /* there are no more na_oi's that match modai[i] */ + if ( k == nai ) { + i = j; + } + } + } + } + + /* One call per table... */ + for ( i=0; i<nai; i += j ) { + atmp = modai[i]; + for ( j=i+1; j<nai; j++ ) + if ( atmp->na_oi != modai[j]->na_oi ) + break; + j -= i; + myTable = myDict->getTable( atmp->na_oi->no_table.bv_val ); + if ( !myTable ) + continue; + rc = ndb_oc_attrs( NA->txn, myTable, NA->e, atmp->na_oi, &modai[i], j, old ); + if ( rc ) break; + } + attrs_free( old ); + return rc; +} + + +int +ndb_back_modify( Operation *op, SlapReply *rs ) +{ + struct ndb_info *ni = (struct ndb_info *) op->o_bd->be_private; + Entry e = {0}; + int manageDSAit = get_manageDSAit( op ); + char textbuf[SLAP_TEXT_BUFLEN]; + size_t textlen = sizeof textbuf; + + int num_retries = 0; + + NdbArgs NA; + NdbRdns rdns; + struct berval matched; + + LDAPControl **preread_ctrl = NULL; + LDAPControl **postread_ctrl = NULL; + LDAPControl *ctrls[SLAP_MAX_RESPONSE_CONTROLS]; + int num_ctrls = 0; + + Debug( LDAP_DEBUG_ARGS, LDAP_XSTRING(ndb_back_modify) ": %s\n", + op->o_req_dn.bv_val, 0, 0 ); + + ctrls[num_ctrls] = NULL; + + slap_mods_opattrs( op, &op->orm_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; + + 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_modify) ": retrying...\n", 0, 0, 0); + if ( op->o_abandon ) { + rs->sr_err = SLAPD_ABANDON; + goto return_results; + } + if ( NA.ocs ) { + ber_bvarray_free_x( NA.ocs, op->o_tmpmemctx ); + } + ndb_trans_backoff( ++num_retries ); + } + NA.ocs = NULL; + + /* begin transaction */ + NA.txn = NA.ndb->startTransaction(); + rs->sr_text = NULL; + if( !NA.txn ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(ndb_back_modify) ": 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; + } + + /* get entry or ancestor */ + rs->sr_err = ndb_entry_get_info( op, &NA, 0, &matched ); + switch( rs->sr_err ) { + case 0: + break; + case LDAP_NO_SUCH_OBJECT: + Debug( LDAP_DEBUG_ARGS, + "<=- ndb_back_modify: 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 ( !manageDSAit && is_entry_referral( &e ) ) { + /* entry is a referral, don't allow modify */ + rs->sr_ref = get_entry_referrals( op, &e ); + + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(ndb_back_modify) ": entry is referral\n", + 0, 0, 0 ); + + rs->sr_err = LDAP_REFERRAL; + rs->sr_matched = e.e_name.bv_val; + rs->sr_flags = REP_REF_MUSTBEFREED; + 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; + } + + 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_modify) ": 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; + } + } + } + + /* Modify the entry */ + rs->sr_err = ndb_modify_internal( op, &NA, &rs->sr_text, textbuf, textlen ); + + if( rs->sr_err != LDAP_SUCCESS ) { + Debug( LDAP_DEBUG_TRACE, + LDAP_XSTRING(ndb_back_modify) ": modify failed (%d)\n", + rs->sr_err, 0, 0 ); +#if 0 + switch( rs->sr_err ) { + case DB_LOCK_DEADLOCK: + case DB_LOCK_NOTGRANTED: + goto retry; + } +#endif + goto return_results; + } + + if( op->o_postread ) { + if( postread_ctrl == NULL ) { + postread_ctrl = &ctrls[num_ctrls++]; + ctrls[num_ctrls] = NULL; + } + if( slap_read_controls( op, rs, &e, + &slap_post_read_bv, postread_ctrl ) ) + { + Debug( LDAP_DEBUG_TRACE, + "<=- " LDAP_XSTRING(ndb_back_modify) + ": 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_modify) ": 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_modify) ": updated%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 ( NA.ocs ) { + ber_bvarray_free_x( NA.ocs, op->o_tmpmemctx ); + NA.ocs = NULL; + } + + if ( e.e_attrs != NULL ) { + 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( 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; +} |