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https://git.openldap.org/openldap/openldap.git
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409 lines
9.2 KiB
C
409 lines
9.2 KiB
C
/* repl.c - log modifications for replication purposes */
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/* $OpenLDAP$ */
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/*
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* Copyright 1998-2002 The OpenLDAP Foundation, All Rights Reserved.
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* COPYING RESTRICTIONS APPLY, see COPYRIGHT file
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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/ctype.h>
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#include <ac/socket.h>
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#ifdef HAVE_SYS_FILE_H
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#include <sys/file.h>
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#endif
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#include "slap.h"
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#include "ldif.h"
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int
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add_replica_info(
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Backend *be,
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const char *host
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)
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{
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int i = 0;
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assert( be );
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assert( host );
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if ( be->be_replica != NULL ) {
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for ( ; be->be_replica[ i ] != NULL; i++ );
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}
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be->be_replica = ch_realloc( be->be_replica,
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sizeof( struct slap_replica_info * )*( i + 2 ) );
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be->be_replica[ i ]
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= ch_calloc( sizeof( struct slap_replica_info ), 1 );
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be->be_replica[ i ]->ri_host = ch_strdup( host );
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be->be_replica[ i ]->ri_nsuffix = NULL;
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be->be_replica[ i ]->ri_attrs = NULL;
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be->be_replica[ i + 1 ] = NULL;
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return( i );
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}
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int
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add_replica_suffix(
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Backend *be,
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int nr,
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const char *suffix
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)
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{
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struct berval dn, *ndn = NULL;
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int rc;
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dn.bv_val = (char *) suffix;
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dn.bv_len = strlen( dn.bv_val );
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rc = dnNormalize( NULL, &dn, &ndn );
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if( rc != LDAP_SUCCESS ) {
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return 2;
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}
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if ( select_backend( ndn, 0, 0 ) != be ) {
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ber_bvfree( ndn );
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return 1;
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}
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ber_bvecadd( &be->be_replica[nr]->ri_nsuffix, ndn );
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return 0;
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}
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int
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add_replica_attrs(
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Backend *be,
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int nr,
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char *attrs,
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int exclude
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)
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{
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if ( be->be_replica[nr]->ri_attrs != NULL ) {
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if ( be->be_replica[nr]->ri_exclude != exclude ) {
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fprintf( stderr, "attr selective replication directive '%s' conflicts with previous one (discarded)\n", attrs );
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ch_free( be->be_replica[nr]->ri_attrs );
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be->be_replica[nr]->ri_attrs = NULL;
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}
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}
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be->be_replica[nr]->ri_exclude = exclude;
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be->be_replica[nr]->ri_attrs = str2anlist( be->be_replica[nr]->ri_attrs,
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attrs, "," );
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return ( be->be_replica[nr]->ri_attrs == NULL );
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}
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static void
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print_vals( FILE *fp, struct berval *type, struct berval *bv );
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static void
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replog1( struct slap_replica_info *ri, Operation *op, void *change, FILE *fp, void *first);
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void
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replog(
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Backend *be,
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Operation *op,
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struct berval *dn,
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struct berval *ndn,
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void *change
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)
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{
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Modifications *ml = NULL;
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Attribute *a = NULL;
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Entry *e;
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FILE *fp, *lfp;
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int i;
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/* undef NO_LOG_WHEN_NO_REPLICAS */
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#ifdef NO_LOG_WHEN_NO_REPLICAS
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int count = 0;
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#endif
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int subsets = 0;
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long now = slap_get_time();
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if ( be->be_replogfile == NULL && replogfile == NULL ) {
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return;
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}
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ldap_pvt_thread_mutex_lock( &replog_mutex );
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if ( (fp = lock_fopen( be->be_replogfile ? be->be_replogfile :
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replogfile, "a", &lfp )) == NULL ) {
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ldap_pvt_thread_mutex_unlock( &replog_mutex );
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return;
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}
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for ( i = 0; be->be_replica != NULL && be->be_replica[i] != NULL; i++ ) {
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/* check if dn's suffix matches legal suffixes, if any */
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if ( be->be_replica[i]->ri_nsuffix != NULL ) {
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int j;
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for ( j = 0; be->be_replica[i]->ri_nsuffix[j]; j++ ) {
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if ( dnIsSuffix( ndn, be->be_replica[i]->ri_nsuffix[j] ) ) {
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break;
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}
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}
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if ( !be->be_replica[i]->ri_nsuffix[j] ) {
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/* do not add "replica:" line */
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continue;
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}
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}
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/* See if we only want a subset of attributes */
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if ( be->be_replica[i]->ri_attrs != NULL &&
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( op->o_tag == LDAP_REQ_MODIFY || op->o_tag == LDAP_REQ_ADD || op->o_tag == LDAP_REQ_EXTENDED ) ) {
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if ( !subsets ) {
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subsets = i + 1;
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}
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/* Do attribute subsets by themselves in a second pass */
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continue;
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}
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fprintf( fp, "replica: %s\n", be->be_replica[i]->ri_host );
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#ifdef NO_LOG_WHEN_NO_REPLICAS
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++count;
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#endif
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}
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#ifdef NO_LOG_WHEN_NO_REPLICAS
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if ( count == 0 && subsets == 0 ) {
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/* if no replicas matched, drop the log
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* (should we log it anyway?) */
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lock_fclose( fp, lfp );
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ldap_pvt_thread_mutex_unlock( &replog_mutex );
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return;
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}
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#endif
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fprintf( fp, "time: %ld\n", now );
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fprintf( fp, "dn: %s\n", dn->bv_val );
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replog1( NULL, op, change, fp, NULL );
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if ( subsets > 0 ) {
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void *first;
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for ( i = subsets - 1; be->be_replica != NULL && be->be_replica[i] != NULL; i++ ) {
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/* If no attrs, we already did this above */
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if ( be->be_replica[i]->ri_attrs == NULL ) {
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continue;
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}
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/* check if dn's suffix matches legal suffixes, if any */
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if ( be->be_replica[i]->ri_nsuffix != NULL ) {
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int j;
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for ( j = 0; be->be_replica[i]->ri_nsuffix[j]; j++ ) {
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if ( dnIsSuffix( ndn, be->be_replica[i]->ri_nsuffix[j] ) ) {
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break;
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}
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}
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if ( !be->be_replica[i]->ri_nsuffix[j] ) {
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/* do not add "replica:" line */
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continue;
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}
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}
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subsets = 0;
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first = NULL;
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switch( op->o_tag ) {
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case LDAP_REQ_EXTENDED:
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/* quick hack for extended operations */
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/* assume change parameter is a Modfications* */
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/* fall thru */
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case LDAP_REQ_MODIFY:
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for ( ml = change; ml != NULL; ml = ml->sml_next ) {
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int is_in, exclude;
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is_in = ad_inlist( ml->sml_desc, be->be_replica[i]->ri_attrs );
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exclude = be->be_replica[i]->ri_exclude;
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/*
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* there might be a more clever way to do this test,
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* but this way, at least, is comprehensible :)
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*/
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if ( ( is_in && !exclude ) || ( !is_in && exclude ) ) {
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subsets = 1;
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first = ml;
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break;
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}
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}
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if ( !subsets ) {
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continue;
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}
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break;
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case LDAP_REQ_ADD:
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e = change;
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for ( a = e->e_attrs; a != NULL; a = a->a_next ) {
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int is_in, exclude;
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is_in = ad_inlist( a->a_desc, be->be_replica[i]->ri_attrs );
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exclude = be->be_replica[i]->ri_exclude;
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if ( ( is_in && !exclude ) || ( !is_in && exclude ) ) {
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subsets = 1;
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first = a;
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break;
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}
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}
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if ( !subsets ) {
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continue;
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}
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break;
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default:
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/* Other operations were logged in the first pass */
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continue;
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}
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fprintf( fp, "replica: %s\n", be->be_replica[i]->ri_host );
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fprintf( fp, "time: %ld\n", now );
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fprintf( fp, "dn: %s\n", dn->bv_val );
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replog1( be->be_replica[i], op, change, fp, first );
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}
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}
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lock_fclose( fp, lfp );
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ldap_pvt_thread_mutex_unlock( &replog_mutex );
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}
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static void
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replog1(
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struct slap_replica_info *ri,
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Operation *op,
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void *change,
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FILE *fp,
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void *first
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)
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{
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Modifications *ml;
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Attribute *a;
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Entry *e;
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struct slap_replog_moddn *moddn;
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switch ( op->o_tag ) {
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case LDAP_REQ_EXTENDED:
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/* quick hack for extended operations */
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/* assume change parameter is a Modfications* */
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/* fall thru */
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case LDAP_REQ_MODIFY:
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fprintf( fp, "changetype: modify\n" );
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ml = first ? first : change;
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for ( ; ml != NULL; ml = ml->sml_next ) {
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char *type;
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if ( ri && ri->ri_attrs ) {
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int is_in = ad_inlist( ml->sml_desc, ri->ri_attrs );
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if ( ( !is_in && !ri->ri_exclude ) || ( is_in && ri->ri_exclude ) ) {
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continue;
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}
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}
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type = ml->sml_desc->ad_cname.bv_val;
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switch ( ml->sml_op ) {
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case LDAP_MOD_ADD:
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fprintf( fp, "add: %s\n", type );
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break;
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case LDAP_MOD_DELETE:
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fprintf( fp, "delete: %s\n", type );
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break;
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case LDAP_MOD_REPLACE:
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fprintf( fp, "replace: %s\n", type );
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break;
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}
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if ( ml->sml_bvalues )
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print_vals( fp, &ml->sml_desc->ad_cname, ml->sml_bvalues );
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fprintf( fp, "-\n" );
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}
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break;
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case LDAP_REQ_ADD:
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e = change;
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fprintf( fp, "changetype: add\n" );
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a = first ? first : e->e_attrs;
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for ( ; a != NULL; a=a->a_next ) {
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if ( ri && ri->ri_attrs ) {
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int is_in = ad_inlist( a->a_desc, ri->ri_attrs );
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if ( ( !is_in && !ri->ri_exclude ) || ( is_in && ri->ri_exclude ) ) {
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continue;
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}
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/* If the list includes objectClass names,
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* only include those classes in the
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* objectClass attribute
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*/
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if ( a->a_desc == slap_schema.si_ad_objectClass ) {
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int ocs = 0;
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AttributeName *an;
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struct berval vals[2];
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vals[1].bv_val = NULL;
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vals[1].bv_len = 0;
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for ( an = ri->ri_attrs; an->an_name.bv_val; an++ ) {
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if ( an->an_oc ) {
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int i;
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for ( i=0; a->a_vals[i].bv_val; i++ ) {
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if ( a->a_vals[i].bv_len == an->an_name.bv_len
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&& !strcasecmp(a->a_vals[i].bv_val,
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an->an_name.bv_val ) ) {
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ocs = 1;
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vals[0] = an->an_name;
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print_vals( fp, &a->a_desc->ad_cname, vals );
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break;
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}
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}
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}
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}
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if ( ocs ) continue;
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}
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}
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print_vals( fp, &a->a_desc->ad_cname, a->a_vals );
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}
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break;
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case LDAP_REQ_DELETE:
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fprintf( fp, "changetype: delete\n" );
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break;
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case LDAP_REQ_MODRDN:
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moddn = change;
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fprintf( fp, "changetype: modrdn\n" );
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fprintf( fp, "newrdn: %s\n", moddn->newrdn->bv_val );
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fprintf( fp, "deleteoldrdn: %d\n", moddn->deloldrdn ? 1 : 0 );
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if( moddn->newsup != NULL ) {
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fprintf( fp, "newsuperior: %s\n", moddn->newsup->bv_val );
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}
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}
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fprintf( fp, "\n" );
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}
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static void
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print_vals(
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FILE *fp,
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struct berval *type,
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struct berval *bv )
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{
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ber_len_t i, len;
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char *buf, *bufp;
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for ( i = 0, len = 0; bv && bv[i].bv_val; i++ ) {
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if ( bv[i].bv_len > len )
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len = bv[i].bv_len;
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}
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len = LDIF_SIZE_NEEDED( type->bv_len, len ) + 1;
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buf = (char *) ch_malloc( len );
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for ( ; bv && bv->bv_val; bv++ ) {
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bufp = buf;
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ldif_sput( &bufp, LDIF_PUT_VALUE, type->bv_val,
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bv->bv_val, bv->bv_len );
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*bufp = '\0';
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fputs( buf, fp );
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}
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free( buf );
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}
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