/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 2003-2007 The OpenLDAP Foundation.
+ * Copyright 2003-2012 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
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,
ca.be = be;
snprintf( ca.log, sizeof( ca.log ), "%s: line %d",
ca.fname, ca.lineno );
+ ca.op = SLAP_CONFIG_ADD;
+ ca.valx = -1;
for (; on; on=on->on_next) {
rc = SLAP_CONF_UNKNOWN;
ca.bi = &on->on_bi;
ct = config_find_keyword( on->on_bi.bi_cf_ocs->co_table, &ca );
if ( ct ) {
+ ca.table = on->on_bi.bi_cf_ocs->co_type;
rc = config_add_vals( ct, &ca );
if ( rc != SLAP_CONF_UNKNOWN )
break;
static int
over_db_open(
- BackendDB *be
+ BackendDB *be,
+ ConfigReply *cr
)
{
- return over_db_func( be, db_open );
+ slap_overinfo *oi = be->bd_info->bi_private;
+ slap_overinst *on = oi->oi_list;
+ BackendDB db = *be;
+ int rc = 0;
+
+ db.be_flags |= SLAP_DBFLAG_OVERLAY;
+ db.bd_info = oi->oi_orig;
+ if ( db.bd_info->bi_db_open ) {
+ rc = db.bd_info->bi_db_open( &db, cr );
+ }
+
+ for (; on && rc == 0; on=on->on_next) {
+ db.bd_info = &on->on_bi;
+ if ( db.bd_info->bi_db_open ) {
+ rc = db.bd_info->bi_db_open( &db, cr );
+ }
+ }
+
+ return rc;
}
static int
over_db_close(
- BackendDB *be
+ BackendDB *be,
+ ConfigReply *cr
)
{
slap_overinfo *oi = be->bd_info->bi_private;
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 );
+ rc = be->bd_info->bi_db_close( be, cr );
}
}
if ( oi->oi_orig->bi_db_close ) {
be->bd_info = oi->oi_orig;
- rc = be->bd_info->bi_db_close( be );
+ rc = be->bd_info->bi_db_close( be, cr );
}
be->bd_info = bi_orig;
static int
over_db_destroy(
- BackendDB *be
+ BackendDB *be,
+ ConfigReply *cr
)
{
slap_overinfo *oi = be->bd_info->bi_private;
slap_overinst *on = oi->oi_list, *next;
- int rc;
+ BackendInfo *bi_orig = be->bd_info;
+ int rc = 0;
- rc = over_db_func( be, db_destroy );
+ be->bd_info = oi->oi_orig;
+ if ( be->bd_info->bi_db_destroy ) {
+ rc = be->bd_info->bi_db_destroy( be, cr );
+ }
+ for (; on && rc == 0; on=on->on_next) {
+ be->bd_info = &on->on_bi;
+ if ( be->bd_info->bi_db_destroy ) {
+ rc = be->bd_info->bi_db_destroy( be, cr );
+ }
+ }
+
+ on = oi->oi_list;
if ( on ) {
for (next = on->on_next; on; on=next) {
next = on->on_next;
free( on );
}
}
-
+ be->bd_info = bi_orig;
free( oi );
return rc;
}
return rc;
}
+int
+overlay_entry_get_ov(
+ Operation *op,
+ struct berval *dn,
+ ObjectClass *oc,
+ AttributeDescription *ad,
+ int rw,
+ Entry **e,
+ slap_overinst *on )
+{
+ slap_overinfo *oi = on->on_info;
+ BackendDB *be = op->o_bd, db;
+ BackendInfo *bi = op->o_bd->bd_info;
+ int rc = SLAP_CB_CONTINUE;
+
+ for ( ; on; on = on->on_next ) {
+ if ( on->on_bi.bi_entry_get_rw ) {
+ /* 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_entry_get_rw( op, dn,
+ oc, ad, rw, e );
+ if ( rc != SLAP_CB_CONTINUE ) break;
+ }
+ }
+
+ if ( rc == SLAP_CB_CONTINUE ) {
+ /* 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_entry_get_rw ) {
+ rc = oi->oi_orig->bi_entry_get_rw( op, dn,
+ oc, ad, rw, e );
+ }
+ }
+ /* should not fall thru this far without anything happening... */
+ if ( rc == SLAP_CB_CONTINUE ) {
+ rc = LDAP_UNWILLING_TO_PERFORM;
+ }
+
+ op->o_bd = be;
+ op->o_bd->bd_info = bi;
+
+ return rc;
+}
+
+static int
+over_entry_get_rw(
+ Operation *op,
+ struct berval *dn,
+ ObjectClass *oc,
+ AttributeDescription *ad,
+ int rw,
+ Entry **e )
+{
+ slap_overinfo *oi;
+ slap_overinst *on;
+
+ assert( op->o_bd != NULL );
+
+ oi = op->o_bd->bd_info->bi_private;
+ on = oi->oi_list;
+
+ return overlay_entry_get_ov( op, dn, oc, ad, rw, e, on );
+}
+
+int
+overlay_entry_release_ov(
+ Operation *op,
+ Entry *e,
+ int rw,
+ slap_overinst *on )
+{
+ slap_overinfo *oi = on->on_info;
+ BackendDB *be = op->o_bd, db;
+ BackendInfo *bi = op->o_bd->bd_info;
+ int rc = SLAP_CB_CONTINUE;
+
+ for ( ; on; on = on->on_next ) {
+ if ( on->on_bi.bi_entry_release_rw ) {
+ /* 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_entry_release_rw( op, e, rw );
+ if ( rc != SLAP_CB_CONTINUE ) break;
+ }
+ }
+
+ if ( rc == SLAP_CB_CONTINUE ) {
+ /* 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_entry_release_rw ) {
+ rc = oi->oi_orig->bi_entry_release_rw( op, e, rw );
+ }
+ }
+ /* should not fall thru this far without anything happening... */
+ if ( rc == SLAP_CB_CONTINUE ) {
+ entry_free( e );
+ rc = 0;
+ }
+
+ op->o_bd = be;
+ op->o_bd->bd_info = bi;
+
+ return rc;
+}
+
+static int
+over_entry_release_rw(
+ Operation *op,
+ Entry *e,
+ int rw )
+{
+ slap_overinfo *oi;
+ slap_overinst *on;
+
+ assert( op->o_bd != NULL );
+
+ oi = op->o_bd->bd_info->bi_private;
+ on = oi->oi_list;
+
+ return overlay_entry_release_ov( op, e, rw, on );
+}
+
static int
over_acl_group(
Operation *op,
{
slap_overinfo *oi;
slap_overinst *on;
- BackendInfo *bi = op->o_bd->bd_info;
+ 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 );
+ assert( be != NULL );
- oi = op->o_bd->bd_info->bi_private;
+ bi = be->bd_info;
+ oi = bi->bi_private;
on = oi->oi_list;
for ( ; on; on = on->on_next ) {
{
slap_overinfo *oi;
slap_overinst *on;
- BackendInfo *bi = op->o_bd->bd_info;
+ 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 );
+ assert( be != NULL );
- oi = op->o_bd->bd_info->bi_private;
+ bi = be->bd_info;
+ oi = bi->bi_private;
on = oi->oi_list;
for ( ; on; on = on->on_next ) {
return rc;
}
+int
+overlay_callback_after_backover( Operation *op, slap_callback *sc, int append )
+{
+ slap_callback **scp;
+
+ for ( scp = &op->o_callback; *scp != NULL; scp = &(*scp)->sc_next ) {
+ if ( (*scp)->sc_response == over_back_response ) {
+ sc->sc_next = (*scp)->sc_next;
+ (*scp)->sc_next = sc;
+ return 0;
+ }
+ }
+
+ if ( append ) {
+ *scp = sc;
+ return 0;
+ }
+
+ return 1;
+}
+
/*
* default return code in case of missing backend function
* and overlay stack returning SLAP_CB_CONTINUE
slap_overinfo *oi;
slap_overinst *on;
BackendDB *be = op->o_bd, db;
- slap_callback cb = {NULL, over_back_response, NULL, NULL};
+ slap_callback cb = {NULL, over_back_response, NULL, NULL}, **sc;
int rc = SLAP_CB_CONTINUE;
/* FIXME: used to happen for instance during abandon
op->o_callback = &cb;
rc = overlay_op_walk( op, rs, which, oi, on );
+ for ( sc = &op->o_callback; *sc; sc = &(*sc)->sc_next ) {
+ if ( *sc == &cb ) {
+ *sc = cb.sc_next;
+ break;
+ }
+ }
op->o_bd = be;
- op->o_callback = cb.sc_next;
return rc;
}
/* add to all backends... */
LDAP_STAILQ_FOREACH( bd, &backendDB, be_next ) {
- if ( be == bd ) {
+ if ( bd == be->bd_self ) {
gotit = 1;
}
- bd->be_ctrls[ cid ] = 1;
+ /* overlays can be instanciated multiple times, use
+ * be_ctrls[ cid ] as an instance counter, so that the
+ * overlay's controls are only really disabled after the
+ * last instance called overlay_register_control() */
+ bd->be_ctrls[ cid ]++;
bd->be_ctrls[ SLAP_MAX_CIDS ] = 1;
}
}
if ( !gotit ) {
- be->be_ctrls[ cid ] = 1;
- be->be_ctrls[ SLAP_MAX_CIDS ] = 1;
+ /* overlays can be instanciated multiple times, use
+ * be_ctrls[ cid ] as an instance counter, so that the
+ * overlay's controls are only really unregistered after the
+ * last instance called overlay_register_control() */
+ be->bd_self->be_ctrls[ cid ]++;
+ be->bd_self->be_ctrls[ SLAP_MAX_CIDS ] = 1;
}
return 0;
}
+#ifdef SLAP_CONFIG_DELETE
+void
+overlay_unregister_control( BackendDB *be, const char *oid )
+{
+ int gotit = 0;
+ int cid;
+
+ if ( slap_find_control_id( oid, &cid ) == LDAP_CONTROL_NOT_FOUND ) {
+ return;
+ }
+
+ if ( SLAP_ISGLOBALOVERLAY( be ) ) {
+ BackendDB *bd;
+
+ /* remove from all backends... */
+ LDAP_STAILQ_FOREACH( bd, &backendDB, be_next ) {
+ if ( bd == be->bd_self ) {
+ gotit = 1;
+ }
+
+ bd->be_ctrls[ cid ]--;
+ }
+ }
+
+ if ( !gotit ) {
+ be->bd_self->be_ctrls[ cid ]--;
+ }
+}
+#endif /* SLAP_CONFIG_DELETE */
+
void
overlay_destroy_one( BackendDB *be, slap_overinst *on )
{
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 );
+ on->on_bi.bi_db_destroy( be, NULL );
be->bd_info = bi_orig;
}
free( on );
}
}
+#ifdef SLAP_CONFIG_DELETE
+typedef struct ov_remove_ctx {
+ BackendDB *be;
+ slap_overinst *on;
+} ov_remove_ctx;
+
+int
+overlay_remove_cb( Operation *op, SlapReply *rs )
+{
+ ov_remove_ctx *rm_ctx = (ov_remove_ctx*) op->o_callback->sc_private;
+ BackendInfo *bi_orig = rm_ctx->be->bd_info;
+
+ rm_ctx->be->bd_info = (BackendInfo*) rm_ctx->on;
+
+ if ( rm_ctx->on->on_bi.bi_db_close ) {
+ rm_ctx->on->on_bi.bi_db_close( rm_ctx->be, NULL );
+ }
+ if ( rm_ctx->on->on_bi.bi_db_destroy ) {
+ rm_ctx->on->on_bi.bi_db_destroy( rm_ctx->be, NULL );
+ }
+
+ /* clean up after removing last overlay */
+ if ( ! rm_ctx->on->on_info->oi_list ) {
+ /* reset db flags and bd_info to orig */
+ SLAP_DBFLAGS( rm_ctx->be ) &= ~SLAP_DBFLAG_GLOBAL_OVERLAY;
+ rm_ctx->be->bd_info = rm_ctx->on->on_info->oi_orig;
+ ch_free(rm_ctx->on->on_info);
+ } else {
+ rm_ctx->be->bd_info = bi_orig;
+ }
+ free( rm_ctx->on );
+ op->o_tmpfree(rm_ctx, op->o_tmpmemctx);
+ return SLAP_CB_CONTINUE;
+}
+
+void
+overlay_remove( BackendDB *be, slap_overinst *on, Operation *op )
+{
+ slap_overinfo *oi = on->on_info;
+ slap_overinst **oidx;
+ ov_remove_ctx *rm_ctx;
+ slap_callback *rm_cb, *cb;
+
+ /* remove overlay from oi_list */
+ for ( oidx = &oi->oi_list; *oidx; oidx = &(*oidx)->on_next ) {
+ if ( *oidx == on ) {
+ *oidx = on->on_next;
+ break;
+ }
+ }
+
+ /* The db_close and db_destroy handlers to cleanup a release
+ * the overlay's resources are called from the cleanup callback
+ */
+ rm_ctx = op->o_tmpalloc( sizeof( ov_remove_ctx ), op->o_tmpmemctx );
+ rm_ctx->be = be;
+ rm_ctx->on = on;
+
+ rm_cb = op->o_tmpalloc( sizeof( slap_callback ), op->o_tmpmemctx );
+ rm_cb->sc_next = NULL;
+ rm_cb->sc_cleanup = overlay_remove_cb;
+ rm_cb->sc_response = NULL;
+ rm_cb->sc_private = (void*) rm_ctx;
+
+ /* Append callback to the end of the list */
+ for ( cb = op->o_callback; cb->sc_next; cb = cb->sc_next );
+ cb->sc_next = rm_cb;
+}
+#endif /* SLAP_CONFIG_DELETE */
+
void
overlay_insert( BackendDB *be, slap_overinst *on2, slap_overinst ***prev,
int idx )
on2->on_next = oi->oi_list;
oi->oi_list = on2;
} else {
- int i;
- slap_overinst *on, *otmp1 = NULL, *otmp2;
+ int i, novs;
+ slap_overinst *on, **prev;
/* Since the list is in reverse order and is singly linked,
- * we reverse it to find the idx insertion point. Adding
- * on overlay at a specific point should be a pretty
+ * we have to count the overlays and then insert backwards.
+ * Adding on overlay at a specific point should be a pretty
* infrequent occurrence.
*/
- for ( on = oi->oi_list; on; on=otmp2 ) {
- otmp2 = on->on_next;
- on->on_next = otmp1;
- otmp1 = on;
- }
- oi->oi_list = NULL;
+ novs = 0;
+ for ( on = oi->oi_list; on; on=on->on_next )
+ novs++;
+
+ if (idx > novs)
+ idx = 0;
+ else
+ idx = novs - idx;
+
/* advance to insertion point */
- for ( i=0, on = otmp1; i<idx; i++ ) {
- otmp1 = on->on_next;
- on->on_next = oi->oi_list;
- oi->oi_list = on;
+ prev = &oi->oi_list;
+ for ( i=0; i<idx; i++ ) {
+ on = *prev;
+ prev = &on->on_next;
}
/* insert */
- on2->on_next = oi->oi_list;
- oi->oi_list = on2;
- if ( otmp1 ) {
- *prev = &otmp1->on_next;
- /* replace remainder of list */
- for ( on=otmp1; on; on=otmp1 ) {
- otmp1 = on->on_next;
- on->on_next = oi->oi_list;
- oi->oi_list = on;
- }
- }
+ on2->on_next = *prev;
+ *prev = on2;
}
}
/* add an overlay to a particular backend. */
int
-overlay_config( BackendDB *be, const char *ov, int idx, BackendInfo **res )
+overlay_config( BackendDB *be, const char *ov, int idx, BackendInfo **res, ConfigReply *cr )
{
slap_overinst *on = NULL, *on2 = NULL, **prev;
slap_overinfo *oi = NULL;
bi->bi_chk_controls = over_aux_chk_controls;
/* these have specific arglists */
+ bi->bi_entry_get_rw = over_entry_get_rw;
+ bi->bi_entry_release_rw = over_entry_release_rw;
bi->bi_access_allowed = over_access_allowed;
bi->bi_acl_group = over_acl_group;
bi->bi_acl_attribute = over_acl_attribute;
} else {
if ( overlay_is_inst( be, ov ) ) {
- Debug( LDAP_DEBUG_ANY, "overlay_config(): "
- "overlay \"%s\" already in list\n",
- ov, 0, 0 );
if ( SLAPO_SINGLE( be ) ) {
+ Debug( LDAP_DEBUG_ANY, "overlay_config(): "
+ "overlay \"%s\" already in list\n",
+ ov, 0, 0 );
return 1;
}
}
if ( on2->on_bi.bi_db_init ) {
int rc;
be->bd_info = (BackendInfo *)on2;
- rc = on2->on_bi.bi_db_init( be );
+ rc = on2->on_bi.bi_db_init( be, cr);
be->bd_info = (BackendInfo *)oi;
if ( rc ) {
*prev = on2->on_next;
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