68b138cbd3
git-svn-id: https://unbound.nlnetlabs.nl/svn/trunk@3079 be551aaa-1e26-0410-a405-d3ace91eadb9
106 lines
3.5 KiB
C
106 lines
3.5 KiB
C
/*
|
|
* services/outbound_list.h - keep list of outbound serviced queries.
|
|
*
|
|
* Copyright (c) 2007, NLnet Labs. All rights reserved.
|
|
*
|
|
* This software is open source.
|
|
*
|
|
* Redistribution and use in source and binary forms, with or without
|
|
* modification, are permitted provided that the following conditions
|
|
* are met:
|
|
*
|
|
* Redistributions of source code must retain the above copyright notice,
|
|
* this list of conditions and the following disclaimer.
|
|
*
|
|
* Redistributions in binary form must reproduce the above copyright notice,
|
|
* this list of conditions and the following disclaimer in the documentation
|
|
* and/or other materials provided with the distribution.
|
|
*
|
|
* Neither the name of the NLNET LABS nor the names of its contributors may
|
|
* be used to endorse or promote products derived from this software without
|
|
* specific prior written permission.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
|
|
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
|
|
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
|
|
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
|
|
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED
|
|
* TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
|
|
* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
|
|
* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
|
|
* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
|
|
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
|
|
*/
|
|
|
|
/**
|
|
* \file
|
|
*
|
|
* This file contains functions to help a module keep track of the
|
|
* queries it has outstanding to authoritative servers.
|
|
*/
|
|
#ifndef SERVICES_OUTBOUND_LIST_H
|
|
#define SERVICES_OUTBOUND_LIST_H
|
|
struct outbound_entry;
|
|
struct serviced_query;
|
|
struct module_qstate;
|
|
|
|
/**
|
|
* The outbound list. This structure is part of the module specific query
|
|
* state.
|
|
*/
|
|
struct outbound_list {
|
|
/** The linked list of outbound query entries. */
|
|
struct outbound_entry* first;
|
|
};
|
|
|
|
/**
|
|
* Outbound list entry. A serviced query sent by a module processing the
|
|
* query from the qstate. Double linked list to aid removal.
|
|
*/
|
|
struct outbound_entry {
|
|
/** next in list */
|
|
struct outbound_entry* next;
|
|
/** prev in list */
|
|
struct outbound_entry* prev;
|
|
/** The query that was sent out */
|
|
struct serviced_query* qsent;
|
|
/** the module query state that sent it */
|
|
struct module_qstate* qstate;
|
|
};
|
|
|
|
/**
|
|
* Init the user allocated outbound list structure
|
|
* @param list: the list structure.
|
|
*/
|
|
void outbound_list_init(struct outbound_list* list);
|
|
|
|
/**
|
|
* Clear the user owner outbound list structure.
|
|
* Deletes serviced queries.
|
|
* @param list: the list structure. It is cleared, but the list struct itself
|
|
* is callers responsability to delete.
|
|
*/
|
|
void outbound_list_clear(struct outbound_list* list);
|
|
|
|
/**
|
|
* Insert new entry into the list. Caller must allocate the entry with malloc.
|
|
* qstate and qsent are set by caller.
|
|
* @param list: the list to add to.
|
|
* @param e: entry to add, it is only half initialised at call start, fully
|
|
* initialised at call end.
|
|
*/
|
|
void outbound_list_insert(struct outbound_list* list,
|
|
struct outbound_entry* e);
|
|
|
|
/**
|
|
* Remove an entry from the list, and deletes it.
|
|
* Deletes serviced query in the entry.
|
|
* @param list: the list to remove from.
|
|
* @param e: the entry to remove.
|
|
*/
|
|
void outbound_list_remove(struct outbound_list* list,
|
|
struct outbound_entry* e);
|
|
|
|
#endif /* SERVICES_OUTBOUND_LIST_H */
|