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/* auditlog.c - log modifications for audit/history purposes */
/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2005-2021 The OpenLDAP Foundation.
* Portions copyright 2004-2005 Symas Corporation.
* 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 Symas Corp. for inclusion in
* OpenLDAP Software. This work was sponsored by Hewlett-Packard.
*/
#include "portable.h"
#ifdef SLAPD_OVER_AUDITLOG
#include <stdio.h>
#include <ac/string.h>
#include <ac/ctype.h>
#include "slap.h"
#include "config.h"
#include "ldif.h"
typedef struct auditlog_data {
ldap_pvt_thread_mutex_t ad_mutex;
char *ad_logfile;
} auditlog_data;
static ConfigTable auditlogcfg[] = {
{ "auditlog", "filename", 2, 2, 0,
ARG_STRING|ARG_OFFSET,
(void *)offsetof(auditlog_data, ad_logfile),
"( OLcfgOvAt:15.1 NAME 'olcAuditlogFile' "
"DESC 'Filename for auditlogging' "
"SYNTAX OMsDirectoryString )", NULL, NULL },
{ NULL, NULL, 0, 0, 0, ARG_IGNORED }
};
static ConfigOCs auditlogocs[] = {
{ "( OLcfgOvOc:15.1 "
"NAME 'olcAuditlogConfig' "
"DESC 'Auditlog configuration' "
"SUP olcOverlayConfig "
"MAY ( olcAuditlogFile ) )",
Cft_Overlay, auditlogcfg },
{ NULL, 0, NULL }
};
static int fprint_ldif(FILE *f, char *name, char *val, ber_len_t len) {
char *s;
if((s = ldif_put(LDIF_PUT_VALUE, name, val, len)) == NULL)
return(-1);
fputs(s, f);
ber_memfree(s);
return(0);
}
static int auditlog_response(Operation *op, SlapReply *rs) {
slap_overinst *on = (slap_overinst *)op->o_bd->bd_info;
auditlog_data *ad = on->on_bi.bi_private;
FILE *f;
Attribute *a;
Modifications *m;
struct berval *b, *who = NULL, peername;
char *what, *whatm, *suffix;
time_t stamp;
int i;
if ( rs->sr_err != LDAP_SUCCESS ) return SLAP_CB_CONTINUE;
if ( !ad->ad_logfile ) return SLAP_CB_CONTINUE;
/*
** add or modify: use modifiersName if present
**
*/
switch(op->o_tag) {
case LDAP_REQ_MODRDN: what = "modrdn"; break;
case LDAP_REQ_DELETE: what = "delete"; break;
case LDAP_REQ_ADD:
what = "add";
for(a = op->ora_e->e_attrs; a; a = a->a_next)
if( a->a_desc == slap_schema.si_ad_modifiersName ) {
who = &a->a_vals[0];
break;
}
break;
case LDAP_REQ_MODIFY:
what = "modify";
for(m = op->orm_modlist; m; m = m->sml_next)
if( m->sml_desc == slap_schema.si_ad_modifiersName &&
( m->sml_op == LDAP_MOD_ADD ||
m->sml_op == LDAP_MOD_REPLACE )) {
who = &m->sml_values[0];
break;
}
break;
default:
return SLAP_CB_CONTINUE;
}
suffix = op->o_bd->be_suffix[0].bv_len ? op->o_bd->be_suffix[0].bv_val :
"global";
/*
** note: this means requestor's dn when modifiersName is null
*/
if ( !who )
who = &op->o_dn;
peername = op->o_conn->c_peer_name;
ldap_pvt_thread_mutex_lock(&ad->ad_mutex);
if((f = fopen(ad->ad_logfile, "a")) == NULL) {
ldap_pvt_thread_mutex_unlock(&ad->ad_mutex);
return SLAP_CB_CONTINUE;
}
stamp = slap_get_time();
fprintf(f, "# %s %ld %s%s%s %s conn=%ld\n",
what, (long)stamp, suffix, who ? " " : "", who ? who->bv_val : "",
peername.bv_val ? peername.bv_val: "", op->o_conn->c_connid);
if ( !BER_BVISEMPTY( &op->o_conn->c_dn ) &&
(!who || !dn_match( who, &op->o_conn->c_dn )))
fprintf(f, "# realdn: %s\n", op->o_conn->c_dn.bv_val );
fprintf(f, "dn: %s\nchangetype: %s\n",
op->o_req_dn.bv_val, what);
switch(op->o_tag) {
case LDAP_REQ_ADD:
for(a = op->ora_e->e_attrs; a; a = a->a_next)
if((b = a->a_vals) != NULL)
for(i = 0; b[i].bv_val; i++)
fprint_ldif(f, a->a_desc->ad_cname.bv_val, b[i].bv_val, b[i].bv_len);
break;
case LDAP_REQ_MODIFY:
for(m = op->orm_modlist; m; m = m->sml_next) {
switch(m->sml_op & LDAP_MOD_OP) {
case LDAP_MOD_ADD: whatm = "add"; break;
case LDAP_MOD_REPLACE: whatm = "replace"; break;
case LDAP_MOD_DELETE: whatm = "delete"; break;
case LDAP_MOD_INCREMENT: whatm = "increment"; break;
default:
fprintf(f, "# MOD_TYPE_UNKNOWN:%02x\n", m->sml_op & LDAP_MOD_OP);
continue;
}
fprintf(f, "%s: %s\n", whatm, m->sml_desc->ad_cname.bv_val);
if((b = m->sml_values) != NULL)
for(i = 0; b[i].bv_val; i++)
fprint_ldif(f, m->sml_desc->ad_cname.bv_val, b[i].bv_val, b[i].bv_len);
fprintf(f, "-\n");
}
break;
case LDAP_REQ_MODRDN:
fprintf(f, "newrdn: %s\ndeleteoldrdn: %s\n",
op->orr_newrdn.bv_val, op->orr_deleteoldrdn ? "1" : "0");
if(op->orr_newSup) fprintf(f, "newsuperior: %s\n", op->orr_newSup->bv_val);
break;
case LDAP_REQ_DELETE:
/* nothing else needed */
break;
}
fprintf(f, "# end %s %ld\n\n", what, (long)stamp);
fclose(f);
ldap_pvt_thread_mutex_unlock(&ad->ad_mutex);
return SLAP_CB_CONTINUE;
}
static slap_overinst auditlog;
static int
auditlog_db_init(
BackendDB *be,
ConfigReply *cr
)
{
slap_overinst *on = (slap_overinst *)be->bd_info;
auditlog_data *ad = ch_calloc(1, sizeof(auditlog_data));
on->on_bi.bi_private = ad;
ldap_pvt_thread_mutex_init( &ad->ad_mutex );
return 0;
}
static int
auditlog_db_destroy(
BackendDB *be,
ConfigReply *cr
)
{
slap_overinst *on = (slap_overinst *)be->bd_info;
auditlog_data *ad = on->on_bi.bi_private;
ldap_pvt_thread_mutex_destroy( &ad->ad_mutex );
free( ad->ad_logfile );
free( ad );
return 0;
}
int auditlog_initialize() {
int rc;
auditlog.on_bi.bi_type = "auditlog";
auditlog.on_bi.bi_db_init = auditlog_db_init;
auditlog.on_bi.bi_db_destroy = auditlog_db_destroy;
auditlog.on_response = auditlog_response;
auditlog.on_bi.bi_cf_ocs = auditlogocs;
rc = config_register_schema( auditlogcfg, auditlogocs );
if ( rc ) return rc;
return overlay_register(&auditlog);
}
#if SLAPD_OVER_AUDITLOG == SLAPD_MOD_DYNAMIC && defined(PIC)
int
init_module( int argc, char *argv[] )
{
return auditlog_initialize();
}
#endif
#endif /* SLAPD_OVER_AUDITLOG */
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