2 * Copyright 1998-2003 The OpenLDAP Foundation, All Rights Reserved.
3 * COPYING RESTRICTIONS APPLY, see COPYRIGHT file
6 * Copyright 2000, John E. Schimmel, All rights reserved.
7 * This software is not subject to any license of Mirapoint, Inc.
9 * This is free software; you can redistribute and use it
10 * under the same terms as OpenLDAP itself.
12 /* Adapted for incorporatation into OpenLDAP by Kurt Zeilenga */
15 * This file contains routines to generate a change sequence number. Every
16 * add, delete, and modification is given a unique identifier for use in
17 * resolving conflicts during replication operations.
19 * These routines are (loosly) based upon draft-ietf-ldup-model-03.txt,
20 * A WORK IN PROGRESS. The format will likely change.
22 * The format of a CSN string is: yyyymmddhhmmssz#s#r#c
23 * where s is a counter of operations within a timeslice, r is
24 * the replica id (normally zero), and c is a counter of
25 * modifications within this operation. s, r, and c are
26 * represented in hex and zero padded to lengths of 6, 2, and
29 * Calls to this routine MUST be serialized with other calls
40 lutil_csnstr(char *buf, size_t len, unsigned int replica, unsigned int mod)
42 static time_t csntime;
43 static unsigned int csnop;
58 n = snprintf( buf, len,
59 "%4d%02d%02d%02d%02d%02dZ#%06x#%02x#%06x",
60 ltm->tm_year + 1900, ltm->tm_mon + 1, ltm->tm_mday, ltm->tm_hour,
61 ltm->tm_min, ltm->tm_sec, op, replica, mod );
64 return ( (size_t) n < len ) ? n : 0;
69 main(int argc, char **argv)
71 char buf[ LDAP_LUTIL_CSNSTR_BUFSIZE ];
73 if ( ! lutil_csnstr( buf, (size_t) 10, 0, 0 ) ) {
74 fprintf(stderr, "failed lutil_csnstr\n");
76 if ( ! lutil_csnstr( buf, sizeof(buf), 0, 0 ) ) {
77 fprintf(stderr, "failed lutil_csnstr\n");