/* backover.c - backend overlay routines */
/* $OpenLDAP: pkg/ldap/servers/slapd/backover.c,v 1.31.2.20 2007/01/02 21:43:54 kurt Exp $ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
* Copyright 2003-2007 The OpenLDAP Foundation.
* 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>.
*/
/* Functions to overlay other modules over a backend. */
#include "portable.h"
#include <stdio.h>
#include <ac/string.h>
#include <ac/socket.h>
#define SLAPD_TOOLS
#include "slap.h"
#include "config.h"
static slap_overinst *overlays;
enum db_which {
db_open = 0,
db_close,
db_destroy,
db_last
};
static int
over_db_func(
BackendDB *be,
enum db_which which
)
{
slap_overinfo *oi = be->bd_info->bi_private;
slap_overinst *on = oi->oi_list;
BackendInfo *bi_orig = be->bd_info;
BI_db_open **func;
int rc = 0;
func = &oi->oi_orig->bi_db_open;
if ( func[which] ) {
be->bd_info = oi->oi_orig;
rc = func[which]( be );
}
for (; on && rc == 0; on=on->on_next) {
be->bd_info = &on->on_bi;
func = &on->on_bi.bi_db_open;
if (func[which]) {
rc = func[which]( be );
}
}
be->bd_info = bi_orig;
return rc;
}
static int
over_db_config(
BackendDB *be,
const char *fname,
int lineno,
int argc,
char **argv
)
{
slap_overinfo *oi = be->bd_info->bi_private;
slap_overinst *on = oi->oi_list;
BackendInfo *bi_orig = be->bd_info;
struct ConfigOCs *be_cf_ocs = be->be_cf_ocs;
ConfigArgs ca = {0};
int rc = 0;
if ( oi->oi_orig->bi_db_config ) {
be->bd_info = oi->oi_orig;
be->be_cf_ocs = oi->oi_orig->bi_cf_ocs;
rc = oi->oi_orig->bi_db_config( be, fname, lineno,
argc, argv );
if ( be->bd_info != oi->oi_orig ) {
slap_overinfo *oi2;
slap_overinst *on2, **onp;
BackendDB be2 = *be;
int i;
/* a database added an overlay;
* work it around... */
assert( overlay_is_over( be ) );
oi2 = ( slap_overinfo * )be->bd_info->bi_private;
on2 = oi2->oi_list;
/* need to put a uniqueness check here as well;
* note that in principle there could be more than
* one overlay as a result of multiple calls to
* overlay_config() */
be2.bd_info = (BackendInfo *)oi;
for ( i = 0, onp = &on2; *onp; i++, onp = &(*onp)->on_next ) {
if ( overlay_is_inst( &be2, (*onp)->on_bi.bi_type ) ) {
Debug( LDAP_DEBUG_ANY, "over_db_config(): "
"warning, freshly added "
"overlay #%d \"%s\" is already in list\n",
i, (*onp)->on_bi.bi_type, 0 );
/* NOTE: if the overlay already exists,
* there is no way to merge the results
* of the configuration that may have
* occurred during bi_db_config(); we
* just issue a warning, and the
* administrator should deal with this */
}
}
*onp = oi->oi_list;
oi->oi_list = on2;
ch_free( be->bd_info );
}
be->bd_info = (BackendInfo *)oi;
if ( rc != SLAP_CONF_UNKNOWN ) return rc;
}
ca.argv = argv;
ca.argc = argc;
ca.fname = fname;
ca.lineno = lineno;
ca.be = be;
snprintf( ca.log, sizeof( ca.log ), "%s: line %d",
ca.fname, ca.lineno );
for (; on; on=on->on_next) {
rc = SLAP_CONF_UNKNOWN;
if (on->on_bi.bi_cf_ocs) {
ConfigTable *ct;
ca.bi = &on->on_bi;
ct = config_find_keyword( on->on_bi.bi_cf_ocs->co_table, &ca );
if ( ct ) {
rc = config_add_vals( ct, &ca );
if ( rc != SLAP_CONF_UNKNOWN )
break;
}
}
if (on->on_bi.bi_db_config && rc == SLAP_CONF_UNKNOWN) {
be->bd_info = &on->on_bi;
rc = on->on_bi.bi_db_config( be, fname, lineno,
argc, argv );
if ( rc != SLAP_CONF_UNKNOWN ) break;
}
}
be->bd_info = bi_orig;
be->be_cf_ocs = be_cf_ocs;
return rc;
}
static int
over_db_open(
BackendDB *be
)
{
return over_db_func( be, db_open );
}
static int
over_db_close(
BackendDB *be
)
{
slap_overinfo *oi = be->bd_info->bi_private;
slap_overinst *on = oi->oi_list;
BackendInfo *bi_orig = be->bd_info;
int rc = 0;
for (; on && rc == 0; on=on->on_next) {
be->bd_info = &on->on_bi;
if ( be->bd_info->bi_db_close ) {
rc = be->bd_info->bi_db_close( be );
}
}
if ( oi->oi_orig->bi_db_close ) {
be->bd_info = oi->oi_orig;
rc = be->bd_info->bi_db_close( be );
}
be->bd_info = bi_orig;
return rc;
}
static int
over_db_destroy(
BackendDB *be
)
{
slap_overinfo *oi = be->bd_info->bi_private;
slap_overinst *on = oi->oi_list, *next;
int rc;
rc = over_db_func( be, db_destroy );
if ( on ) {
for (next = on->on_next; on; on=next) {
next = on->on_next;
free( on );
}
}
free( oi );
return rc;
}
static int
over_back_response ( Operation *op, SlapReply *rs )
{
slap_overinfo *oi = op->o_callback->sc_private;
slap_overinst *on = oi->oi_list;
int rc = SLAP_CB_CONTINUE;
BackendDB *be = op->o_bd, db = *op->o_bd;
db.be_flags |= SLAP_DBFLAG_OVERLAY;
op->o_bd = &db;
for (; on; on=on->on_next ) {
if ( on->on_response ) {
db.bd_info = (BackendInfo *)on;
rc = on->on_response( op, rs );
if ( rc != SLAP_CB_CONTINUE ) break;
}
}
/* Bypass the remaining on_response layers, but allow
* normal execution to continue.
*/
if ( rc == SLAP_CB_BYPASS )
rc = SLAP_CB_CONTINUE;
op->o_bd = be;
return rc;
}
#ifdef SLAP_OVERLAY_ACCESS
static int
over_access_allowed(
Operation *op,
Entry *e,
AttributeDescription *desc,
struct berval *val,
slap_access_t access,
AccessControlState *state,
slap_mask_t *maskp )
{
slap_overinfo *oi;
slap_overinst *on;
BackendInfo *bi;
BackendDB *be = op->o_bd, db;
int rc = SLAP_CB_CONTINUE;
/* FIXME: used to happen for instance during abandon
* when global overlays are used... */
assert( op->o_bd != NULL );
bi = op->o_bd->bd_info;
/* Were we invoked on the frontend? */
if ( !bi->bi_access_allowed ) {
oi = frontendDB->bd_info->bi_private;
} else {
oi = op->o_bd->bd_info->bi_private;
}
on = oi->oi_list;
for ( ; on; on = on->on_next ) {
if ( on->on_bi.bi_access_allowed ) {
/* NOTE: do not copy the structure until required */
if ( !SLAP_ISOVERLAY( op->o_bd ) ) {
db = *op->o_bd;
db.be_flags |= SLAP_DBFLAG_OVERLAY;
op->o_bd = &db;
}
op->o_bd->bd_info = (BackendInfo *)on;
rc = on->on_bi.bi_access_allowed( op, e,
desc, val, access, state, maskp );
if ( rc != SLAP_CB_CONTINUE ) break;
}
}
if ( rc == SLAP_CB_CONTINUE ) {
BI_access_allowed *bi_access_allowed;
/* if the database structure was changed, o_bd points to a
* copy of the structure; put the original bd_info in place */
if ( SLAP_ISOVERLAY( op->o_bd ) ) {
op->o_bd->bd_info = oi->oi_orig;
}
if ( oi->oi_orig->bi_access_allowed ) {
bi_access_allowed = oi->oi_orig->bi_access_allowed;
} else {
bi_access_allowed = slap_access_allowed;
}
rc = bi_access_allowed( op, e,
desc, val, access, state, maskp );
}
/* should not fall thru this far without anything happening... */
if ( rc == SLAP_CB_CONTINUE ) {
/* access not allowed */
rc = 0;
}
op->o_bd = be;
op->o_bd->bd_info = bi;
return rc;
}
static int
over_acl_group(
Operation *op,
Entry *e,
struct berval *gr_ndn,
struct berval *op_ndn,
ObjectClass *group_oc,
AttributeDescription *group_at )
{
slap_overinfo *oi;
slap_overinst *on;
BackendInfo *bi = op->o_bd->bd_info;
BackendDB *be = op->o_bd, db;
int rc = SLAP_CB_CONTINUE;
/* FIXME: used to happen for instance during abandon
* when global overlays are used... */
assert( op->o_bd != NULL );
oi = op->o_bd->bd_info->bi_private;
on = oi->oi_list;
for ( ; on; on = on->on_next ) {
if ( on->on_bi.bi_acl_group ) {
/* NOTE: do not copy the structure until required */
if ( !SLAP_ISOVERLAY( op->o_bd ) ) {
db = *op->o_bd;
db.be_flags |= SLAP_DBFLAG_OVERLAY;
op->o_bd = &db;
}
op->o_bd->bd_info = (BackendInfo *)on;
rc = on->on_bi.bi_acl_group( op, e,
gr_ndn, op_ndn, group_oc, group_at );
if ( rc != SLAP_CB_CONTINUE ) break;
}
}
if ( rc == SLAP_CB_CONTINUE ) {
BI_acl_group *bi_acl_group;
/* if the database structure was changed, o_bd points to a
* copy of the structure; put the original bd_info in place */
if ( SLAP_ISOVERLAY( op->o_bd ) ) {
op->o_bd->bd_info = oi->oi_orig;
}
if ( oi->oi_orig->bi_acl_group ) {
bi_acl_group = oi->oi_orig->bi_acl_group;
} else {
bi_acl_group = backend_group;
}
rc = bi_acl_group( op, e,
gr_ndn, op_ndn, group_oc, group_at );
}
/* should not fall thru this far without anything happening... */
if ( rc == SLAP_CB_CONTINUE ) {
/* access not allowed */
rc = 0;
}
op->o_bd = be;
op->o_bd->bd_info = bi;
return rc;
}
static int
over_acl_attribute(
Operation *op,
Entry *target,
struct berval *entry_ndn,
AttributeDescription *entry_at,
BerVarray *vals,
slap_access_t access )
{
slap_overinfo *oi;
slap_overinst *on;
BackendInfo *bi = op->o_bd->bd_info;
BackendDB *be = op->o_bd, db;
int rc = SLAP_CB_CONTINUE;
/* FIXME: used to happen for instance during abandon
* when global overlays are used... */
assert( op->o_bd != NULL );
oi = op->o_bd->bd_info->bi_private;
on = oi->oi_list;
for ( ; on; on = on->on_next ) {
if ( on->on_bi.bi_acl_attribute ) {
/* NOTE: do not copy the structure until required */
if ( !SLAP_ISOVERLAY( op->o_bd ) ) {
db = *op->o_bd;
db.be_flags |= SLAP_DBFLAG_OVERLAY;
op->o_bd = &db;
}
op->o_bd->bd_info = (BackendInfo *)on;
rc = on->on_bi.bi_acl_attribute( op, target,
entry_ndn, entry_at, vals, access );
if ( rc != SLAP_CB_CONTINUE ) break;
}
}
if ( rc == SLAP_CB_CONTINUE ) {
BI_acl_attribute *bi_acl_attribute;
/* if the database structure was changed, o_bd points to a
* copy of the structure; put the original bd_info in place */
if ( SLAP_ISOVERLAY( op->o_bd ) ) {
op->o_bd->bd_info = oi->oi_orig;
}
if ( oi->oi_orig->bi_acl_attribute ) {
bi_acl_attribute = oi->oi_orig->bi_acl_attribute;
} else {
bi_acl_attribute = backend_attribute;
}
rc = bi_acl_attribute( op, target,
entry_ndn, entry_at, vals, access );
}
/* should not fall thru this far without anything happening... */
if ( rc == SLAP_CB_CONTINUE ) {
/* access not allowed */
rc = 0;
}
op->o_bd = be;
op->o_bd->bd_info = bi;
return rc;
}
#endif /* SLAP_OVERLAY_ACCESS */
/*
* default return code in case of missing backend function
* and overlay stack returning SLAP_CB_CONTINUE
*/
static int op_rc[ op_last ] = {
LDAP_UNWILLING_TO_PERFORM, /* bind */
LDAP_UNWILLING_TO_PERFORM, /* unbind */
LDAP_UNWILLING_TO_PERFORM, /* search */
SLAP_CB_CONTINUE, /* compare; pass to frontend */
LDAP_UNWILLING_TO_PERFORM, /* modify */
LDAP_UNWILLING_TO_PERFORM, /* modrdn */
LDAP_UNWILLING_TO_PERFORM, /* add */
LDAP_UNWILLING_TO_PERFORM, /* delete */
LDAP_UNWILLING_TO_PERFORM, /* abandon */
LDAP_UNWILLING_TO_PERFORM, /* cancel */
LDAP_UNWILLING_TO_PERFORM, /* extended */
LDAP_SUCCESS, /* aux_operational */
LDAP_SUCCESS, /* aux_chk_referrals */
SLAP_CB_CONTINUE /* aux_chk_controls; pass to frontend */
};
int overlay_op_walk(
Operation *op,
SlapReply *rs,
slap_operation_t which,
slap_overinfo *oi,
slap_overinst *on
)
{
BI_op_bind **func;
int rc = SLAP_CB_CONTINUE;
for (; on; on=on->on_next ) {
func = &on->on_bi.bi_op_bind;
if ( func[which] ) {
op->o_bd->bd_info = (BackendInfo *)on;
rc = func[which]( op, rs );
if ( rc != SLAP_CB_CONTINUE ) break;
}
}
if ( rc == SLAP_CB_BYPASS )
rc = SLAP_CB_CONTINUE;
func = &oi->oi_orig->bi_op_bind;
if ( func[which] && rc == SLAP_CB_CONTINUE ) {
op->o_bd->bd_info = oi->oi_orig;
rc = func[which]( op, rs );
}
/* should not fall thru this far without anything happening... */
if ( rc == SLAP_CB_CONTINUE ) {
rc = op_rc[ which ];
}
/* The underlying backend didn't handle the request, make sure
* overlay cleanup is processed.
*/
if ( rc == LDAP_UNWILLING_TO_PERFORM ) {
slap_callback *sc_next;
for ( ; op->o_callback && op->o_callback->sc_response !=
over_back_response; op->o_callback = sc_next ) {
sc_next = op->o_callback->sc_next;
if ( op->o_callback->sc_cleanup ) {
op->o_callback->sc_cleanup( op, rs );
}
}
}
return rc;
}
static int
over_op_func(
Operation *op,
SlapReply *rs,
slap_operation_t which
)
{
slap_overinfo *oi;
slap_overinst *on;
BackendDB *be = op->o_bd, db;
slap_callback cb = {NULL, over_back_response, NULL, NULL};
int rc = SLAP_CB_CONTINUE;
/* FIXME: used to happen for instance during abandon
* when global overlays are used... */
assert( op->o_bd != NULL );
oi = op->o_bd->bd_info->bi_private;
on = oi->oi_list;
if ( !SLAP_ISOVERLAY( op->o_bd )) {
db = *op->o_bd;
db.be_flags |= SLAP_DBFLAG_OVERLAY;
op->o_bd = &db;
}
cb.sc_next = op->o_callback;
cb.sc_private = oi;
op->o_callback = &cb;
rc = overlay_op_walk( op, rs, which, oi, on );
op->o_bd = be;
op->o_callback = cb.sc_next;
return rc;
}
static int
over_op_bind( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_bind );
}
static int
over_op_unbind( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_unbind );
}
static int
over_op_search( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_search );
}
static int
over_op_compare( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_compare );
}
static int
over_op_modify( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_modify );
}
static int
over_op_modrdn( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_modrdn );
}
static int
over_op_add( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_add );
}
static int
over_op_delete( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_delete );
}
static int
over_op_abandon( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_abandon );
}
static int
over_op_cancel( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_cancel );
}
static int
over_op_extended( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_extended );
}
static int
over_aux_operational( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_aux_operational );
}
static int
over_aux_chk_referrals( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_aux_chk_referrals );
}
static int
over_aux_chk_controls( Operation *op, SlapReply *rs )
{
return over_op_func( op, rs, op_aux_chk_controls );
}
enum conn_which {
conn_init = 0,
conn_destroy,
conn_last
};
static int
over_connection_func(
BackendDB *bd,
Connection *conn,
enum conn_which which
)
{
slap_overinfo *oi;
slap_overinst *on;
BackendDB db;
int rc = SLAP_CB_CONTINUE;
BI_connection_init **func;
/* FIXME: used to happen for instance during abandon
* when global overlays are used... */
assert( bd != NULL );
oi = bd->bd_info->bi_private;
on = oi->oi_list;
if ( !SLAP_ISOVERLAY( bd ) ) {
db = *bd;
db.be_flags |= SLAP_DBFLAG_OVERLAY;
bd = &db;
}
for ( ; on; on = on->on_next ) {
func = &on->on_bi.bi_connection_init;
if ( func[ which ] ) {
bd->bd_info = (BackendInfo *)on;
rc = func[ which ]( bd, conn );
if ( rc != SLAP_CB_CONTINUE ) break;
}
}
func = &oi->oi_orig->bi_connection_init;
if ( func[ which ] && rc == SLAP_CB_CONTINUE ) {
bd->bd_info = oi->oi_orig;
rc = func[ which ]( bd, conn );
}
/* should not fall thru this far without anything happening... */
if ( rc == SLAP_CB_CONTINUE ) {
rc = LDAP_UNWILLING_TO_PERFORM;
}
return rc;
}
static int
over_connection_init(
BackendDB *bd,
Connection *conn
)
{
return over_connection_func( bd, conn, conn_init );
}
static int
over_connection_destroy(
BackendDB *bd,
Connection *conn
)
{
return over_connection_func( bd, conn, conn_destroy );
}
int
overlay_register(
slap_overinst *on
)
{
on->on_next = overlays;
overlays = on;
return 0;
}
/*
* iterator on registered overlays; overlay_next( NULL ) returns the first
* overlay; * subsequent calls with the previously returned value allow to
* iterate * over the entire list; returns NULL when no more overlays are
* registered.
*/
slap_overinst *
overlay_next(
slap_overinst *on
)
{
if ( on == NULL ) {
return overlays;
}
return on->on_next;
}
/*
* returns a specific registered overlay based on the type; NULL if not
* registered.
*/
slap_overinst *
overlay_find( const char *over_type )
{
slap_overinst *on = overlays;
assert( over_type != NULL );
for ( ; on; on = on->on_next ) {
if ( strcmp( on->on_bi.bi_type, over_type ) == 0 ) {
break;
}
}
return on;
}
static const char overtype[] = "over";
/*
* returns TRUE (1) if the database is actually an overlay instance;
* FALSE (0) otherwise.
*/
int
overlay_is_over( BackendDB *be )
{
return be->bd_info->bi_type == overtype;
}
/*
* returns TRUE (1) if the given database is actually an overlay
* instance and, somewhere in the list, contains the requested overlay;
* FALSE (0) otherwise.
*/
int
overlay_is_inst( BackendDB *be, const char *over_type )
{
slap_overinst *on;
assert( be != NULL );
if ( !overlay_is_over( be ) ) {
return 0;
}
on = ((slap_overinfo *)be->bd_info->bi_private)->oi_list;
for ( ; on; on = on->on_next ) {
if ( strcmp( on->on_bi.bi_type, over_type ) == 0 ) {
return 1;
}
}
return 0;
}
int
overlay_register_control( BackendDB *be, const char *oid )
{
int gotit = 0;
int cid;
if ( slap_find_control_id( oid, &cid ) == LDAP_CONTROL_NOT_FOUND ) {
return -1;
}
if ( SLAP_DBFLAGS( be ) & SLAP_DBFLAG_GLOBAL_OVERLAY ) {
BackendDB *bd;
/* add to all backends... */
LDAP_STAILQ_FOREACH( bd, &backendDB, be_next ) {
if ( be == bd ) {
gotit = 1;
}
bd->be_ctrls[ cid ] = 1;
bd->be_ctrls[ SLAP_MAX_CIDS ] = 1;
}
}
if ( !gotit ) {
be->be_ctrls[ cid ] = 1;
be->be_ctrls[ SLAP_MAX_CIDS ] = 1;
}
return 0;
}
void
overlay_destroy_one( BackendDB *be, slap_overinst *on )
{
slap_overinfo *oi = on->on_info;
slap_overinst **oidx;
for ( oidx = &oi->oi_list; *oidx; oidx = &(*oidx)->on_next ) {
if ( *oidx == on ) {
*oidx = on->on_next;
if ( on->on_bi.bi_db_destroy ) {
BackendInfo *bi_orig = be->bd_info;
be->bd_info = (BackendInfo *)on;
on->on_bi.bi_db_destroy( be );
be->bd_info = bi_orig;
}
free( on );
break;
}
}
}
/* add an overlay to a particular backend. */
int
overlay_config( BackendDB *be, const char *ov )
{
slap_overinst *on = NULL, *on2 = NULL;
slap_overinfo *oi = NULL;
BackendInfo *bi = NULL;
on = overlay_find( ov );
if ( !on ) {
Debug( LDAP_DEBUG_ANY, "overlay \"%s\" not found\n", ov, 0, 0 );
return 1;
}
/* If this is the first overlay on this backend, set up the
* overlay info structure
*/
if ( !overlay_is_over( be ) ) {
oi = ch_malloc( sizeof( slap_overinfo ) );
oi->oi_orig = be->bd_info;
oi->oi_bi = *be->bd_info;
oi->oi_origdb = be;
/* NOTE: the first time a global overlay is configured,
* frontendDB gets this flag; it is used later by overlays
* to determine if they're stacked on top of the frontendDB */
if ( oi->oi_orig == frontendDB->bd_info ) {
SLAP_DBFLAGS( be ) |= SLAP_DBFLAG_GLOBAL_OVERLAY;
}
/* Save a pointer to ourself in bi_private.
*/
oi->oi_bi.bi_private = oi;
oi->oi_list = NULL;
bi = (BackendInfo *)oi;
bi->bi_type = (char *)overtype;
bi->bi_db_config = over_db_config;
bi->bi_db_open = over_db_open;
bi->bi_db_close = over_db_close;
bi->bi_db_destroy = over_db_destroy;
bi->bi_op_bind = over_op_bind;
bi->bi_op_unbind = over_op_unbind;
bi->bi_op_search = over_op_search;
bi->bi_op_compare = over_op_compare;
bi->bi_op_modify = over_op_modify;
bi->bi_op_modrdn = over_op_modrdn;
bi->bi_op_add = over_op_add;
bi->bi_op_delete = over_op_delete;
bi->bi_op_abandon = over_op_abandon;
bi->bi_op_cancel = over_op_cancel;
bi->bi_extended = over_op_extended;
/*
* this is fine because it has the same
* args of the operations; we need to rework
* all the hooks to share the same args
* of the operations...
*/
bi->bi_operational = over_aux_operational;
bi->bi_chk_referrals = over_aux_chk_referrals;
bi->bi_chk_controls = over_aux_chk_controls;
#ifdef SLAP_OVERLAY_ACCESS
/* these have specific arglists */
bi->bi_access_allowed = over_access_allowed;
bi->bi_acl_group = over_acl_group;
bi->bi_acl_attribute = over_acl_attribute;
#endif /* SLAP_OVERLAY_ACCESS */
bi->bi_connection_init = over_connection_init;
bi->bi_connection_destroy = over_connection_destroy;
be->bd_info = bi;
} else {
if ( overlay_is_inst( be, ov ) ) {
Debug( LDAP_DEBUG_ANY, "overlay_config(): "
"warning, overlay \"%s\" "
"already in list\n", ov, 0, 0 );
}
oi = be->bd_info->bi_private;
}
/* Insert new overlay on head of list. Overlays are executed
* in reverse of config order...
*/
on2 = ch_calloc( 1, sizeof(slap_overinst) );
*on2 = *on;
on2->on_info = oi;
on2->on_next = oi->oi_list;
oi->oi_list = on2;
/* Any initialization needed? */
if ( on->on_bi.bi_db_init ) {
int rc;
be->bd_info = (BackendInfo *)on2;
rc = on2->on_bi.bi_db_init( be );
be->bd_info = (BackendInfo *)oi;
if ( rc ) {
oi->oi_list = on2->on_next;
ch_free( on2 );
return rc;
}
}
return 0;
}
|
