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/* $OpenBSD: expand.c,v 1.4 2010/04/27 09:49:23 gilles Exp $ */
/*
* Copyright (c) 2009 Gilles Chehade <gilles@openbsd.org>
*
* Permission to use, copy, modify, and distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
* ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
* ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
* OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
#include <sys/types.h>
#include <sys/queue.h>
#include <sys/tree.h>
#include <sys/param.h>
#include <sys/socket.h>
#include <ctype.h>
#include <errno.h>
#include <event.h>
#include <fcntl.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <util.h>
#include "smtpd.h"
struct expandnode *
expandtree_lookup(struct expandtree *expandtree, struct expandnode *node)
{
struct expandnode key;
key = *node;
return RB_FIND(expandtree, expandtree, &key);
}
void
expandtree_increment_node(struct expandtree *expandtree, struct expandnode *node)
{
struct expandnode *p;
p = expandtree_lookup(expandtree, node);
if (p == NULL) {
p = calloc(1, sizeof(struct expandnode));
if (p == NULL)
fatal("calloc");
*p = *node;
if (RB_INSERT(expandtree, expandtree, p))
fatalx("expandtree_increment_node: node already exists");
}
p->refcnt++;
}
void
expandtree_decrement_node(struct expandtree *expandtree, struct expandnode *node)
{
struct expandnode *p;
p = expandtree_lookup(expandtree, node);
if (p == NULL)
fatalx("expandtree_decrement_node: node doesn't exist.");
p->refcnt--;
}
void
expandtree_remove_node(struct expandtree *expandtree, struct expandnode *node)
{
struct expandnode *p;
p = expandtree_lookup(expandtree, node);
if (p == NULL)
fatalx("expandtree_remove: node doesn't exist.");
RB_REMOVE(expandtree, expandtree, p);
}
void
expandtree_free_nodes(struct expandtree *expandtree)
{
struct expandnode *p;
struct expandnode *nxt;
for (p = RB_MIN(expandtree, expandtree); p != NULL; p = nxt) {
nxt = RB_NEXT(expandtree, expandtree, p);
RB_REMOVE(expandtree, expandtree, p);
free(p);
}
}
int
expand_cmp(struct expandnode *e1, struct expandnode *e2)
{
if (e1->type < e2->type)
return -1;
if (e1->type > e2->type)
return 1;
return memcmp(&e1->u, &e2->u, sizeof(e1->u));
}
RB_GENERATE(expandtree, expandnode, entry, expand_cmp);
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