97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/*
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* Copyright (C) 2012 Martin Willi
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* Copyright (C) 2012 revosec AG
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version. See <http://www.fsf.org/copyleft/gpl.txt>.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
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* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* for more details.
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*/
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/**
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* @defgroup lookip_msg lookip_msg
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* @{ @ingroup lookip
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*/
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#ifndef LOOKIP_MSG_H_
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#define LOOKIP_MSG_H_
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#define LOOKIP_SOCKET IPSEC_PIDDIR "/charon.lkp"
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typedef struct lookip_request_t lookip_request_t;
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typedef struct lookip_response_t lookip_response_t;
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/**
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* Message type.
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*
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* The client can send a batch of request messages, containing DUMP, LOOKUP or
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* REGISTER_* messages. The server immediately starts sending responses for
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* these messages, using ENTRY or NOTIFY_* messages.
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* A client MUST send an END message to complete a batch. The server will
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* send any remaining responses, but will not accept new requests and closes
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* the connection when complete.
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*/
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enum {
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/** request a dump of all entries */
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LOOKIP_DUMP = 1,
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/** lookup a specific virtual IP */
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LOOKIP_LOOKUP,
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/** reply message for DUMP and LOOKUP */
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LOOKIP_ENTRY,
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/** reply message for LOOKUP if no such IP found */
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LOOKIP_NOT_FOUND,
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/** register for notifications about new virtual IPs */
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LOOKIP_REGISTER_UP,
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/** register for notifications about virtual IPs released */
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LOOKIP_REGISTER_DOWN,
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/** notify reply message for REGISTER_UP */
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LOOKIP_NOTIFY_UP,
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/** notify reply message for REGISTER_DOWN */
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LOOKIP_NOTIFY_DOWN,
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/** end of request batch */
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LOOKIP_END,
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};
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/**
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* Request message sent from client.
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*
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* Valid request message types are DUMP, LOOKUP, REGISTER_UP/DOWN and END.
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*
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* The vip field is used only in LOOKUP requests, but ignored otherwise.
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*/
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struct lookip_request_t {
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/** request message type */
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int type;
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/** null terminated string representation of virtual IP */
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char vip[40];
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} __attribute__((packed));
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/**
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* Response message sent to client.
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*
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* Valid response message types are ENTRY, NOT_FOUND and NOTIFY_UP/DOWN.
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*
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* All fields are set in all messages, except in NOT_FOUND: Only vip is set.
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*/
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struct lookip_response_t {
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/** response message type */
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int type;
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/** null terminated string representation of virtual IP */
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char vip[40];
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/** null terminated string representation of outer IP */
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char ip[40];
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/** null terminated peer identity */
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char id[256];
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/** null terminated connection name */
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char name[40];
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/** unique connection id */
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unsigned int unique_id;
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} __attribute__((packed));
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#endif /** LOOKIP_MSG_H_ @}*/
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