72 lines
2.4 KiB
C
72 lines
2.4 KiB
C
/*-
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* Copyright (c) 2005 Michael Bushkov <bushman@rsu.ru>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* $FreeBSD$
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*/
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#ifndef __NSCD_AGENT_H__
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#define __NSCD_AGENT_H__
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/*
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* Agents are used to perform the actual lookups from the caching daemon.
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* There are two types of daemons: for common requests and for multipart
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* requests.
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* All agents are stored in the agents table, which is the singleton.
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*/
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enum agent_type {
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COMMON_AGENT = 0,
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MULTIPART_AGENT = 1
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};
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struct agent {
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char *name;
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enum agent_type type;
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};
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struct common_agent {
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struct agent parent;
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int (*lookup_func)(const char *, size_t, char **, size_t *);
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};
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struct multipart_agent {
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struct agent parent;
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void *(*mp_init_func)(void);
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int (*mp_lookup_func)(char **, size_t *, void *);
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void (*mp_destroy_func)(void *);
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};
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struct agent_table {
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struct agent **agents;
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size_t agents_num;
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};
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struct agent_table *init_agent_table(void);
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void register_agent(struct agent_table *, struct agent *);
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struct agent *find_agent(struct agent_table *, const char *, enum agent_type);
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void destroy_agent_table(struct agent_table *);
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#endif
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