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06a99fe36f
databases. - Make nsswitch support caching. Submitted by: Michael Bushkov <bushman__at__rsu.ru> Sponsored by: Google Summer of Code 2005
128 lines
3.4 KiB
C
128 lines
3.4 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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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <assert.h>
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#include <string.h>
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#include <stdlib.h>
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#include "agent.h"
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#include "debug.h"
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static int
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agent_cmp_func(const void *a1, const void *a2)
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{
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struct agent const *ap1 = *((struct agent const **)a1);
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struct agent const *ap2 = *((struct agent const **)a2);
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int res;
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res = strcmp(ap1->name, ap2->name);
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if (res == 0) {
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if (ap1->type == ap2->type)
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res = 0;
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else if (ap1->type < ap2->type)
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res = -1;
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else
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res = 1;
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}
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return (res);
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}
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struct agent_table *
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init_agent_table()
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{
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struct agent_table *retval;
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TRACE_IN(init_agent_table);
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retval = (struct agent_table *)malloc(sizeof(struct agent_table));
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assert(retval != NULL);
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memset(retval, 0, sizeof(struct agent_table));
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TRACE_OUT(init_agent_table);
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return (retval);
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}
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void
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register_agent(struct agent_table *at, struct agent *a)
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{
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struct agent **new_agents;
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size_t new_agents_num;
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TRACE_IN(register_agent);
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assert(at != NULL);
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assert(a != NULL);
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new_agents_num = at->agents_num + 1;
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new_agents = (struct agent **)malloc(sizeof(struct agent *) *
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new_agents_num);
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assert(new_agents != NULL);
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memcpy(new_agents, at->agents, at->agents_num * sizeof(struct agent *));
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new_agents[new_agents_num - 1] = a;
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qsort(new_agents, new_agents_num, sizeof(struct agent *),
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agent_cmp_func);
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free(at->agents);
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at->agents = new_agents;
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at->agents_num = new_agents_num;
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TRACE_OUT(register_agent);
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}
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struct agent *
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find_agent(struct agent_table *at, const char *name, enum agent_type type)
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{
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struct agent **res;
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struct agent model, *model_p;
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TRACE_IN(find_agent);
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model.name = (char *)name;
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model.type = type;
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model_p = &model;
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res = bsearch(&model_p, at->agents, at->agents_num,
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sizeof(struct agent *), agent_cmp_func);
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TRACE_OUT(find_agent);
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return ( res == NULL ? NULL : *res);
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}
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void
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destroy_agent_table(struct agent_table *at)
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{
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size_t i;
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TRACE_IN(destroy_agent_table);
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assert(at != NULL);
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for (i = 0; i < at->agents_num; ++i) {
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free(at->agents[i]->name);
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free(at->agents[i]);
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}
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free(at->agents);
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free(at);
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TRACE_OUT(destroy_agent_table);
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}
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