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/*-
* Copyright (c) 2005 Michael Bushkov <bushman@rsu.ru>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR 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 AUTHOR 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.
*
* $FreeBSD$
*/
#ifndef __NSCD_AGENT_H__
#define __NSCD_AGENT_H__
/*
* Agents are used to perform the actual lookups from the caching daemon.
* There are two types of daemons: for common requests and for multipart
* requests.
* All agents are stored in the agents table, which is the singleton.
*/
enum agent_type {
COMMON_AGENT = 0,
MULTIPART_AGENT = 1
};
struct agent {
char *name;
enum agent_type type;
};
struct common_agent {
struct agent parent;
int (*lookup_func)(const char *, size_t, char **, size_t *);
};
struct multipart_agent {
struct agent parent;
void *(*mp_init_func)(void);
int (*mp_lookup_func)(char **, size_t *, void *);
void (*mp_destroy_func)(void *);
};
struct agent_table {
struct agent **agents;
size_t agents_num;
};
extern struct agent_table *init_agent_table(void);
extern void register_agent(struct agent_table *, struct agent *);
extern struct agent *find_agent(struct agent_table *, const char *,
enum agent_type);
extern void destroy_agent_table(struct agent_table *);
#endif
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