/* $OpenLDAP$ */
/* This work is part of OpenLDAP Software <http://www.openldap.org/>.
*
- * Copyright 1998-2005 The OpenLDAP Foundation.
+ * Copyright 1998-2006 The OpenLDAP Foundation.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
return rc;
}
+/*
+ * slap_response_play()
+ *
+ * plays the callback list; rationale: a callback can
+ * - remove itself from the list, by setting op->o_callback = NULL;
+ * malloc()'ed callbacks should free themselves from inside the
+ * sc_response() function.
+ * - replace itself with another (list of) callback(s), by setting
+ * op->o_callback = a new (list of) callback(s); in this case, it
+ * is the callback's responsibility to to append existing subsequent
+ * callbacks to the end of the list that is passed to the sc_response()
+ * function.
+ * - modify the list of subsequent callbacks by modifying the value
+ * of the sc_next field from inside the sc_response() function; this
+ * case does not require any handling from inside slap_response_play()
+ *
+ * To stop execution of the playlist, the sc_response() function must return
+ * a value different from SLAP_SC_CONTINUE.
+ *
+ * The same applies to slap_cleanup_play(); only, there is no means to stop
+ * execution of the playlist, since all cleanup functions must be called.
+ */
+static int
+slap_response_play(
+ Operation *op,
+ SlapReply *rs )
+{
+ int rc;
+
+#ifdef LDAP_DEVEL
+ slap_callback *sc = op->o_callback, **scp;
+
+ rc = SLAP_CB_CONTINUE;
+ for ( scp = ≻ *scp; ) {
+ slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
+
+ op->o_callback = *scp;
+ if ( op->o_callback->sc_response ) {
+ rc = op->o_callback->sc_response( op, rs );
+ if ( op->o_callback == NULL ) {
+ /* the callback has been removed;
+ * repair the list */
+ *scp = sc_next;
+ sc_nextp = scp;
+
+ } else if ( op->o_callback != *scp ) {
+ /* a new callback has been inserted
+ * in place of the existing one; repair the list */
+ *scp = op->o_callback;
+ sc_nextp = scp;
+ }
+ if ( rc != SLAP_CB_CONTINUE ) break;
+ }
+ scp = sc_nextp;
+ }
+
+ op->o_callback = sc;
+#else /* ! LDAP_DEVEL */
+ slap_callback *sc = op->o_callback, **sc_prev = &sc, *sc_next;
+
+ rc = SLAP_CB_CONTINUE;
+ for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
+ sc_next = op->o_callback->sc_next;
+ if ( op->o_callback->sc_response ) {
+ slap_callback *sc2 = op->o_callback;
+ rc = op->o_callback->sc_response( op, rs );
+ if ( op->o_callback != sc2 ) {
+ *sc_prev = op->o_callback;
+ }
+ if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
+ if ( op->o_callback != sc2 ) continue;
+ }
+ sc_prev = &op->o_callback->sc_next;
+ }
+
+ op->o_callback = sc;
+#endif /* ! LDAP_DEVEL */
+
+ return rc;
+}
+
+static int
+slap_cleanup_play(
+ Operation *op,
+ SlapReply *rs )
+{
+#ifdef LDAP_DEVEL
+ slap_callback *sc = op->o_callback, **scp;
+
+ for ( scp = ≻ *scp; ) {
+ slap_callback *sc_next = (*scp)->sc_next, **sc_nextp = &(*scp)->sc_next;
+
+ op->o_callback = *scp;
+ if ( op->o_callback->sc_cleanup ) {
+ (void)op->o_callback->sc_cleanup( op, rs );
+ if ( op->o_callback == NULL ) {
+ /* the callback has been removed;
+ * repair the list */
+ *scp = sc_next;
+ sc_nextp = scp;
+
+ } else if ( op->o_callback != *scp ) {
+ /* a new callback has been inserted
+ * after the existing one; repair the list */
+ /* a new callback has been inserted
+ * in place of the existing one; repair the list */
+ *scp = op->o_callback;
+ sc_nextp = scp;
+ }
+ /* don't care about the result; do all cleanup */
+ }
+ scp = sc_nextp;
+ }
+
+ op->o_callback = sc;
+#else /* ! LDAP_DEVEL */
+ slap_callback *sc = op->o_callback, **sc_prev = &sc, *sc_next;
+
+ for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
+ sc_next = op->o_callback->sc_next;
+ if ( op->o_callback->sc_cleanup ) {
+ slap_callback *sc2 = op->o_callback;
+ (void)op->o_callback->sc_cleanup( op, rs );
+ if ( op->o_callback != sc2 ) {
+ *sc_prev = op->o_callback;
+ }
+ if ( !op->o_callback ) break;
+ if ( op->o_callback != sc2 ) continue;
+ }
+ sc_prev = &op->o_callback->sc_next;
+ }
+
+ op->o_callback = sc;
+#endif /* ! LDAP_DEVEL */
+
+ return LDAP_SUCCESS;
+}
+
static int
send_ldap_response(
Operation *op,
}
if ( op->o_callback ) {
- slap_callback *sc = op->o_callback, **sc_prev = &sc, *sc_next;
-
- rc = SLAP_CB_CONTINUE;
- for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
- sc_next = op->o_callback->sc_next;
- if ( op->o_callback->sc_response ) {
- slap_callback *sc2 = op->o_callback;
- rc = op->o_callback->sc_response( op, rs );
- if ( op->o_callback != sc2 ) {
- *sc_prev = op->o_callback;
- }
- if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
- if ( op->o_callback != sc2 ) continue;
- }
- sc_prev = &op->o_callback->sc_next;
+ rc = slap_response_play( op, rs );
+ if ( rc != SLAP_CB_CONTINUE ) {
+ goto clean2;
}
-
- op->o_callback = sc;
- if ( rc != SLAP_CB_CONTINUE ) goto clean2;
}
#ifdef LDAP_CONNECTIONLESS
clean2:;
if ( op->o_callback ) {
- slap_callback *sc = op->o_callback, **sc_prev = &sc, *sc_next;
-
- for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
- sc_next = op->o_callback->sc_next;
- if ( op->o_callback->sc_cleanup ) {
- slap_callback *sc2 = op->o_callback;
- (void)op->o_callback->sc_cleanup( op, rs );
- if ( op->o_callback != sc2 ) {
- *sc_prev = op->o_callback;
- }
- if ( !op->o_callback ) break;
- if ( op->o_callback != sc2 ) continue;
- }
- sc_prev = &op->o_callback->sc_next;
- }
- op->o_callback = sc;
+ (void)slap_cleanup_play( op, rs );
}
-
if ( rs->sr_matched && rs->sr_flags & REP_MATCHED_MUSTBEFREED ) {
free( (char *)rs->sr_matched );
rs->sr_matched = NULL;
}
if ( op->o_callback ) {
- slap_callback *sc = op->o_callback, **sc_prev = &sc, *sc_next;
-
- rc = SLAP_CB_CONTINUE;
- for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next )
- {
- sc_next = op->o_callback->sc_next;
- if ( op->o_callback->sc_response ) {
- slap_callback *sc2 = op->o_callback;
- rc = op->o_callback->sc_response( op, rs );
- if ( op->o_callback != sc2 ) {
- *sc_prev = op->o_callback;
- }
- if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
- if ( op->o_callback != sc2 ) continue;
- }
- sc_prev = &op->o_callback->sc_next;
+ rc = slap_response_play( op, rs );
+ if ( rc != SLAP_CB_CONTINUE ) {
+ goto error_return;
}
-
- op->o_callback = sc;
- if ( rc != SLAP_CB_CONTINUE ) goto error_return;
}
Debug( LDAP_DEBUG_TRACE, "=> send_search_entry: conn %lu dn=\"%s\"%s\n",
error_return:;
if ( op->o_callback ) {
- slap_callback *sc = op->o_callback, **sc_prev = &sc, *sc_next;
-
- for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
- sc_next = op->o_callback->sc_next;
- if ( op->o_callback->sc_cleanup ) {
- slap_callback *sc2 = op->o_callback;
- (void)op->o_callback->sc_cleanup( op, rs );
- if ( op->o_callback != sc2 ) {
- *sc_prev = op->o_callback;
- }
- if ( !op->o_callback ) break;
- if ( op->o_callback != sc2 ) continue;
- }
- sc_prev = &op->o_callback->sc_next;
- }
- op->o_callback = sc;
+ (void)slap_cleanup_play( op, rs );
}
if ( e_flags ) {
rs->sr_type = REP_SEARCHREF;
if ( op->o_callback ) {
- slap_callback *sc = op->o_callback, **sc_prev = &sc, *sc_next;
-
- rc = SLAP_CB_CONTINUE;
- for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
- sc_next = op->o_callback->sc_next;
- if ( op->o_callback->sc_response ) {
- slap_callback *sc2 = op->o_callback;
- rc = op->o_callback->sc_response( op, rs );
- if ( op->o_callback != sc2 ) {
- *sc_prev = op->o_callback;
- }
- if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
- if ( op->o_callback != sc2 ) continue;
- }
- sc_prev = &op->o_callback->sc_next;
+ rc = slap_response_play( op, rs );
+ if ( rc != SLAP_CB_CONTINUE ) {
+ goto rel;
}
-
- op->o_callback = sc;
- if ( rc != SLAP_CB_CONTINUE ) goto rel;
}
Debug( LDAP_DEBUG_TRACE,
rel:
if ( op->o_callback ) {
- slap_callback *sc = op->o_callback, **sc_prev = &sc, *sc_next;
-
- for ( sc_next = op->o_callback; sc_next; op->o_callback = sc_next) {
- sc_next = op->o_callback->sc_next;
- if ( op->o_callback->sc_cleanup ) {
- slap_callback *sc2 = op->o_callback;
- (void)op->o_callback->sc_cleanup( op, rs );
- if ( op->o_callback != sc2 ) {
- *sc_prev = op->o_callback;
- }
- if ( rc != SLAP_CB_CONTINUE || !op->o_callback ) break;
- if ( op->o_callback != sc2 ) continue;
- }
- sc_prev = &op->o_callback->sc_next;
- }
- op->o_callback = sc;
+ (void)slap_cleanup_play( op, rs );
}
return rc;
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