mirror of
https://git.openldap.org/openldap/openldap.git
synced 2024-12-21 03:10:25 +08:00
316 lines
8.1 KiB
C
316 lines
8.1 KiB
C
/* $OpenLDAP$ */
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/*
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* Context CSN Management Routines
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*/
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/* Copyright (c) 2003 by International Business Machines, Inc.
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*
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* International Business Machines, Inc. (hereinafter called IBM) grants
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* permission under its copyrights to use, copy, modify, and distribute this
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* Software with or without fee, provided that the above copyright notice and
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* all paragraphs of this notice appear in all copies, and that the name of IBM
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* not be used in connection with the marketing of any product incorporating
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* the Software or modifications thereof, without specific, written prior
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* permission.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", AND IBM DISCLAIMS ALL WARRANTIES,
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* INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A
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* PARTICULAR PURPOSE. IN NO EVENT SHALL IBM BE LIABLE FOR ANY SPECIAL,
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* DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER ARISING
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* OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE, EVEN
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* IF IBM IS APPRISED OF THE POSSIBILITY OF SUCH DAMAGES.
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*/
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#include "portable.h"
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#include <stdio.h>
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#include <ac/string.h>
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#include <ac/socket.h>
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#include <db.h>
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#include "ldap_pvt.h"
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#include "lutil.h"
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#include "slap.h"
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#include "lutil_ldap.h"
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struct berval *
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slap_get_commit_csn( Operation *op )
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{
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struct berval *max_committed_csn = NULL;
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struct slap_csn_entry *csne = NULL, *committed_csne = NULL;
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int i = 0;
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ldap_pvt_thread_mutex_lock( &op->o_bd->be_pcl_mutex );
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LDAP_TAILQ_FOREACH( csne, &op->o_bd->be_pending_csn_list, csn_link ) {
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if ( csne->opid == op->o_opid && csne->connid == op->o_connid )
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break;
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}
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if ( csne ) {
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csne->state = SLAP_CSN_COMMIT;
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}
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LDAP_TAILQ_FOREACH( csne, &op->o_bd->be_pending_csn_list, csn_link ) {
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if ( csne->state == SLAP_CSN_COMMIT )
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committed_csne = csne;
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if ( csne->state == SLAP_CSN_PENDING )
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break;
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}
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ldap_pvt_thread_mutex_unlock( &op->o_bd->be_pcl_mutex );
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if ( committed_csne ) {
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max_committed_csn = ber_dupbv( NULL, committed_csne->csn );
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}
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return max_committed_csn;
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}
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void
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slap_rewind_commit_csn( Operation *op )
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{
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struct slap_csn_entry *csne = NULL;
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ldap_pvt_thread_mutex_lock( &op->o_bd->be_pcl_mutex );
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LDAP_TAILQ_FOREACH( csne, &op->o_bd->be_pending_csn_list, csn_link ) {
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if ( csne->opid == op->o_opid && csne->connid == op->o_connid )
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break;
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}
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if ( csne ) {
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csne->state = SLAP_CSN_PENDING;
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}
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ldap_pvt_thread_mutex_unlock( &op->o_bd->be_pcl_mutex );
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}
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void
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slap_graduate_commit_csn( Operation *op )
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{
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struct slap_csn_entry *csne = NULL;
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ldap_pvt_thread_mutex_lock( &op->o_bd->be_pcl_mutex );
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LDAP_TAILQ_FOREACH( csne, &op->o_bd->be_pending_csn_list, csn_link ) {
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if ( csne->opid == op->o_opid && csne->connid == op->o_connid )
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break;
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}
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if ( csne ) {
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LDAP_TAILQ_REMOVE( &op->o_bd->be_pending_csn_list, csne, csn_link );
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ch_free( csne->csn->bv_val );
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ch_free( csne->csn );
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ch_free( csne );
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}
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ldap_pvt_thread_mutex_unlock( &op->o_bd->be_pcl_mutex );
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return;
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}
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Entry *
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slap_create_context_csn_entry(
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Backend *be,
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struct berval *context_csn
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)
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{
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Modifications *ml;
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Modifications *mlnext;
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Modifications *mod;
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Modifications *modlist;
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Modifications **modtail = &modlist;
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struct berval* ocbva = NULL;
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struct berval* socbva = NULL;
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struct berval* cnbva = NULL;
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struct berval* ssbva = NULL;
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struct berval* scbva = NULL;
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char substr[64];
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char rdnstr[67];
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const char *text;
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char txtbuf[SLAP_TEXT_BUFLEN];
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size_t textlen = sizeof txtbuf;
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Entry* e;
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int rc;
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struct berval sub_bv = { 0, NULL };
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struct berval psubrdn = { 0, NULL };
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slap_callback cb;
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SlapReply rs = {REP_RESULT};
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struct berval rdn = { 0, NULL };
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int match = 0;
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char *def_filter_str = NULL;
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ocbva = ( struct berval * ) ch_calloc( 4, sizeof( struct berval ));
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socbva = ( struct berval * ) ch_calloc( 2, sizeof( struct berval ));
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cnbva = ( struct berval * ) ch_calloc( 2, sizeof( struct berval ));
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ssbva = ( struct berval * ) ch_calloc( 2, sizeof( struct berval ));
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scbva = ( struct berval * ) ch_calloc( 2, sizeof( struct berval ));
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ber_str2bv( "top", strlen("top"), 1, &ocbva[0] );
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ber_str2bv( "subentry", strlen("subentry"), 1, &ocbva[1] );
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ber_str2bv( "syncProviderSubentry",
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strlen("syncProviderSubentry"), 1, &ocbva[2] );
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ocbva[3].bv_len = 0;
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ocbva[3].bv_val = NULL;
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mod = (Modifications *) ch_malloc( sizeof( Modifications ));
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mod->sml_op = LDAP_MOD_REPLACE;
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mod->sml_next = NULL;
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mod->sml_desc = NULL;
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ber_str2bv( "objectClass", strlen("objectClass"), 1, &mod->sml_type );
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mod->sml_bvalues = ocbva;
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mod->sml_nvalues = ocbva;
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*modtail = mod;
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modtail = &mod->sml_next;
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ber_str2bv( "syncProviderSubentry",
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strlen("syncProviderSubentry"), 1, &socbva[0] );
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socbva[1].bv_len = 0;
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socbva[1].bv_val = NULL;
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mod = (Modifications *) ch_malloc( sizeof( Modifications ));
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mod->sml_op = LDAP_MOD_REPLACE;
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mod->sml_next = NULL;
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mod->sml_desc = NULL;
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ber_str2bv( "structuralObjectClass", strlen("structuralObjectClass"), 1, &mod->sml_type );
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mod->sml_bvalues = socbva;
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mod->sml_nvalues = socbva;
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*modtail = mod;
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modtail = &mod->sml_next;
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sprintf( substr, "ldapsync" );
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sprintf( rdnstr, "cn=%s", substr );
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ber_str2bv( substr, strlen( substr ), 1, &cnbva[0] );
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ber_str2bv( rdnstr, strlen( rdnstr ), 1, &psubrdn );
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cnbva[1].bv_len = 0;
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cnbva[1].bv_val = NULL;
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mod = (Modifications *) ch_malloc( sizeof( Modifications ));
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mod->sml_op = LDAP_MOD_REPLACE;
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mod->sml_next = NULL;
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mod->sml_desc = NULL;
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ber_str2bv( "cn", strlen("cn"), 1, &mod->sml_type );
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mod->sml_bvalues = cnbva;
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mod->sml_nvalues = cnbva;
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*modtail = mod;
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modtail = &mod->sml_next;
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if ( context_csn ) {
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ber_dupbv( &scbva[0], context_csn );
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scbva[1].bv_len = 0;
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scbva[1].bv_val = NULL;
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mod = (Modifications *) ch_malloc( sizeof( Modifications ));
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mod->sml_op = LDAP_MOD_REPLACE;
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mod->sml_next = NULL;
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mod->sml_desc = NULL;
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ber_str2bv( "contextCSN", strlen("contextCSN"), 1, &mod->sml_type );
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mod->sml_bvalues = scbva;
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mod->sml_nvalues = scbva;
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*modtail = mod;
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modtail = &mod->sml_next;
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}
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ber_str2bv( "{}", strlen("{}"), 1, &ssbva[0] );
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ssbva[1].bv_len = 0;
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ssbva[1].bv_val = NULL;
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mod = (Modifications *) ch_malloc( sizeof( Modifications ));
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mod->sml_op = LDAP_MOD_REPLACE;
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mod->sml_next = NULL;
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mod->sml_desc = NULL;
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ber_str2bv( "subtreeSpecification",
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strlen("subtreeSpecification"), 1, &mod->sml_type );
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mod->sml_bvalues = ssbva;
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mod->sml_nvalues = ssbva;
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*modtail = mod;
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modtail = &mod->sml_next;
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rc = slap_mods_check( modlist, 1, &text, txtbuf, textlen, NULL );
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if ( rc != LDAP_SUCCESS ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( OPERATION, ERR,
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"create_context_csn_entry: mods check (%s)\n", text, 0, 0 );
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#else
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Debug( LDAP_DEBUG_ANY, "create_context_csn_entry: mods check (%s)\n",
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text, 0, 0 );
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#endif
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}
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e = ( Entry * ) ch_calloc( 1, sizeof( Entry ));
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build_new_dn( &sub_bv, &be->be_nsuffix[0], &psubrdn );
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dnPrettyNormal( NULL, &sub_bv, &e->e_name, &e->e_nname, NULL );
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ch_free( sub_bv.bv_val );
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ch_free( psubrdn.bv_val );
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e->e_attrs = NULL;
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rc = slap_mods2entry( modlist, &e, 1, 1, &text, txtbuf, textlen );
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if( rc != LDAP_SUCCESS ) {
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#ifdef NEW_LOGGING
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LDAP_LOG( OPERATION, ERR,
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"create_context_csn_entry: mods2entry (%s)\n", text, 0, 0 );
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#else
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Debug( LDAP_DEBUG_ANY, "create_context_csn_entry: mods2entry (%s)\n",
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text, 0, 0 );
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#endif
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}
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return e;
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}
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static int
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slap_contextcsn_callback(
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Operation* op,
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SlapReply* rs
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)
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{
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if ( rs->sr_type != REP_SEARCH ) {
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*((int*)op->o_callback->sc_private) = 0;
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} else {
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*((int*)op->o_callback->sc_private) = 1;
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}
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return LDAP_SUCCESS;
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}
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int
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slap_get_csn(
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Operation *op,
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const char *csnbuf,
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int len,
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struct berval *csn,
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int manage_ctxcsn
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)
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{
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struct slap_csn_entry *pending;
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if ( manage_ctxcsn ) {
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pending = (struct slap_csn_entry *) ch_calloc( 1, sizeof( struct slap_csn_entry ));
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}
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if ( csn == NULL )
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return LDAP_OTHER;
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csn->bv_len = lutil_csnstr( csnbuf, len, 0, 0 );
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csn->bv_val = csnbuf;
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if ( manage_ctxcsn ) {
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ldap_pvt_thread_mutex_lock( &op->o_bd->be_pcl_mutex );
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pending->csn = ber_dupbv( NULL, csn );
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pending->connid = op->o_connid;
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pending->opid = op->o_opid;
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pending->state = SLAP_CSN_PENDING;
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LDAP_TAILQ_INSERT_TAIL( &op->o_bd->be_pending_csn_list, pending, csn_link );
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ldap_pvt_thread_mutex_unlock( &op->o_bd->be_pcl_mutex );
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}
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return LDAP_SUCCESS;
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}
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