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https://git.openldap.org/openldap/openldap.git
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310 lines
6.4 KiB
C
310 lines
6.4 KiB
C
/* ldapsync.c -- LDAP Content Sync Routines */
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/* $OpenLDAP$ */
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/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
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*
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* Copyright 2003-2007 The OpenLDAP Foundation.
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* Portions Copyright 2003 IBM Corporation.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted only as authorized by the OpenLDAP
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* Public License.
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*
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* A copy of this license is available in the file LICENSE in the
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* top-level directory of the distribution or, alternatively, at
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* <http://www.OpenLDAP.org/license.html>.
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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 "lutil.h"
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#include "slap.h"
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#include "../../libraries/liblber/lber-int.h" /* get ber_strndup() */
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#include "lutil_ldap.h"
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struct slap_sync_cookie_s slap_sync_cookie =
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LDAP_STAILQ_HEAD_INITIALIZER( slap_sync_cookie );
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void
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slap_compose_sync_cookie(
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Operation *op,
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struct berval *cookie,
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BerVarray csn,
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int rid )
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{
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int len, numcsn = 0;
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if ( csn ) {
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for (; !BER_BVISEMPTY( &csn[numcsn] ); numcsn++);
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}
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if ( numcsn == 0 || rid == -1 ) {
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char cookiestr[ LDAP_LUTIL_CSNSTR_BUFSIZE + 20 ];
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if ( rid == -1 ) {
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cookiestr[0] = '\0';
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len = 0;
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} else {
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len = snprintf( cookiestr, sizeof( cookiestr ),
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"rid=%03d", rid );
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}
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ber_str2bv_x( cookiestr, len, 1, cookie,
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op ? op->o_tmpmemctx : NULL );
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} else {
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char *ptr;
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int i;
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len = 0;
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for ( i=0; i<numcsn; i++)
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len += csn[i].bv_len + 1;
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len += STRLENOF("rid=123,csn=");
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cookie->bv_val = slap_sl_malloc( len, op ? op->o_tmpmemctx : NULL );
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len = sprintf( cookie->bv_val, "rid=%03d,csn=", rid );
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ptr = cookie->bv_val + len;
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for ( i=0; i<numcsn; i++) {
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ptr = lutil_strncopy( ptr, csn->bv_val, csn->bv_len );
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*ptr++ = ';';
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}
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ptr--;
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*ptr = '\0';
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cookie->bv_len = ptr - cookie->bv_val;
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}
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}
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void
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slap_sync_cookie_free(
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struct sync_cookie *cookie,
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int free_cookie
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)
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{
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if ( cookie == NULL )
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return;
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if ( cookie->sids ) {
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ch_free( cookie->sids );
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cookie->sids = NULL;
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}
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if ( cookie->ctxcsn ) {
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ber_bvarray_free( cookie->ctxcsn );
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cookie->ctxcsn = NULL;
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}
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cookie->numcsns = 0;
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if ( !BER_BVISNULL( &cookie->octet_str )) {
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ch_free( cookie->octet_str.bv_val );
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BER_BVZERO( &cookie->octet_str );
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}
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if ( free_cookie ) {
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ch_free( cookie );
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}
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return;
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}
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int
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slap_parse_csn_sid( struct berval *csn )
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{
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char *p, *q;
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int i;
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p = memchr( csn->bv_val, '#', csn->bv_len );
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if ( p )
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p = strchr( p+1, '#' );
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if ( !p )
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return -1;
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p++;
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i = strtoul( p, &q, 10 );
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if ( p == q || i > SLAP_SYNC_SID_MAX )
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i = -1;
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return i;
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}
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int *
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slap_parse_csn_sids( BerVarray csns, int numcsns )
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{
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int i, *ret;
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char *p, *q;
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ret = ch_malloc( numcsns * sizeof(int) );
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for ( i=0; i<numcsns; i++ ) {
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ret[i] = slap_parse_csn_sid( &csns[i] );
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}
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return ret;
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}
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int
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slap_parse_sync_cookie(
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struct sync_cookie *cookie,
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void *memctx
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)
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{
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char *csn_ptr;
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char *csn_str;
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int csn_str_len;
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char *rid_ptr;
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char *cval;
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char *next, *end;
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AttributeDescription *ad = slap_schema.si_ad_modifyTimestamp;
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if ( cookie == NULL )
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return -1;
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if ( cookie->octet_str.bv_len <= STRLENOF( "rid=" ) )
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return -1;
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cookie->rid = -1;
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cookie->ctxcsn = NULL;
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cookie->sids = NULL;
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cookie->numcsns = 0;
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end = cookie->octet_str.bv_val + cookie->octet_str.bv_len;
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for ( next=cookie->octet_str.bv_val; next < end; ) {
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if ( !strncmp( next, "rid=", STRLENOF("rid=") )) {
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rid_ptr = next;
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cookie->rid = strtoul( &rid_ptr[ STRLENOF( "rid=" ) ], &next, 10 );
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if ( next == rid_ptr || next > end || *next != ',' ) {
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return -1;
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}
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if ( *next == ',' ) {
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next++;
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}
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if ( !ad ) {
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break;
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}
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continue;
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}
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if ( !strncmp( next, "csn=", STRLENOF("csn=") )) {
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slap_syntax_validate_func *validate;
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struct berval stamp;
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csn_str = next + STRLENOF("csn=");
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while ( next < end ) {
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/* FIXME use csnValidate when it gets implemented */
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csn_ptr = strchr( csn_str, '#' );
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if ( !csn_ptr || csn_ptr > end )
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break;
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/* ad will be NULL when called from main. we just
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* want to parse the rid then. But we still iterate
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* through the string to find the end.
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*/
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if ( ad ) {
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stamp.bv_val = csn_str;
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stamp.bv_len = csn_ptr - csn_str;
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validate = ad->ad_type->sat_syntax->ssyn_validate;
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if ( validate( ad->ad_type->sat_syntax, &stamp )
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!= LDAP_SUCCESS )
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break;
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}
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cval = strchr( csn_ptr, ';' );
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if ( !cval )
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cval = strchr(csn_ptr, ',' );
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if ( cval )
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stamp.bv_len = cval - csn_str;
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else
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stamp.bv_len = end - csn_str;
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if ( ad ) {
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value_add_one( &cookie->ctxcsn, &stamp );
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cookie->numcsns++;
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}
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if ( cval ) {
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next = cval + 1;
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if ( *cval != ';' )
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break;
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} else {
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next = end;
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break;
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}
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}
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continue;
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}
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next++;
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}
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if ( cookie->numcsns ) {
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cookie->sids = slap_parse_csn_sids( cookie->ctxcsn, cookie->numcsns );
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}
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return 0;
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}
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int
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slap_init_sync_cookie_ctxcsn(
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struct sync_cookie *cookie
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)
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{
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char csnbuf[ LDAP_LUTIL_CSNSTR_BUFSIZE + 4 ];
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struct berval octet_str = BER_BVNULL;
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struct berval ctxcsn = BER_BVNULL;
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if ( cookie == NULL )
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return -1;
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octet_str.bv_len = snprintf( csnbuf, LDAP_LUTIL_CSNSTR_BUFSIZE + 4,
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"csn=%4d%02d%02d%02d%02d%02dZ#%06x#%02x#%06x",
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1900, 1, 1, 0, 0, 0, 0, 0, 0 );
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octet_str.bv_val = csnbuf;
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ch_free( cookie->octet_str.bv_val );
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ber_dupbv( &cookie->octet_str, &octet_str );
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ctxcsn.bv_val = octet_str.bv_val + 4;
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ctxcsn.bv_len = octet_str.bv_len - 4;
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cookie->ctxcsn = NULL;
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value_add_one( &cookie->ctxcsn, &ctxcsn );
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cookie->numcsns = 1;
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return 0;
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}
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struct sync_cookie *
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slap_dup_sync_cookie(
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struct sync_cookie *dst,
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struct sync_cookie *src
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)
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{
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struct sync_cookie *new;
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int i;
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if ( src == NULL )
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return NULL;
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if ( dst ) {
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ber_bvarray_free( dst->ctxcsn );
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dst->ctxcsn = NULL;
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dst->sids = NULL;
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ch_free( dst->octet_str.bv_val );
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BER_BVZERO( &dst->octet_str );
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new = dst;
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} else {
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new = ( struct sync_cookie * )
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ch_calloc( 1, sizeof( struct sync_cookie ));
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}
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new->rid = src->rid;
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new->numcsns = src->numcsns;
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if ( src->numcsns ) {
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if ( ber_bvarray_dup_x( &new->ctxcsn, src->ctxcsn, NULL )) {
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if ( !dst ) {
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ch_free( new );
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}
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return NULL;
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}
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new->sids = ch_malloc( src->numcsns * sizeof(int) );
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for (i=0; i<src->numcsns; i++)
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new->sids[i] = src->sids[i];
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}
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if ( !BER_BVISNULL( &src->octet_str )) {
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ber_dupbv( &new->octet_str, &src->octet_str );
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}
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return new;
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}
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