97 lines
2.8 KiB
C
97 lines
2.8 KiB
C
/* solanum
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* operhash.c - Hashes nick!user@host{oper}
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*
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* Copyright (C) 2005 Lee Hardy <lee -at- leeh.co.uk>
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* Copyright (C) 2005-2016 ircd-ratbox development team
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* Copyright (C) 2016 William Pitcock <nenolod@dereferenced.org>
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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 are
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* met:
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*
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* 1.Redistributions of source code must retain the above copyright notice,
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* 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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* 3.The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
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* INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* 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,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
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* IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#include <rb_lib.h>
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#include "stdinc.h"
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#include "match.h"
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#include "hash.h"
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#include "operhash.h"
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#include "rb_radixtree.h"
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static rb_radixtree *operhash_tree = NULL;
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struct operhash_entry
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{
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unsigned int refcount;
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char name[];
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};
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void
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init_operhash(void)
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{
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operhash_tree = rb_radixtree_create("operhash", NULL);
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}
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const char *
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operhash_add(const char *name)
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{
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struct operhash_entry *ohash;
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size_t len;
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if(EmptyString(name))
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return NULL;
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if((ohash = (struct operhash_entry *) rb_radixtree_retrieve(operhash_tree, name)) != NULL)
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{
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ohash->refcount++;
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return ohash->name;
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}
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len = strlen(name) + 1;
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ohash = rb_malloc(sizeof(struct operhash_entry) + len);
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ohash->refcount = 1;
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memcpy(ohash->name, name, len);
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rb_radixtree_add(operhash_tree, ohash->name, ohash);
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return ohash->name;
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}
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const char *
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operhash_find(const char *name)
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{
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return rb_radixtree_retrieve(operhash_tree, name);
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}
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void
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operhash_delete(const char *name)
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{
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struct operhash_entry *ohash = rb_radixtree_retrieve(operhash_tree, name);
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if(ohash == NULL)
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return;
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ohash->refcount--;
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if(ohash->refcount == 0)
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{
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rb_radixtree_delete(operhash_tree, ohash->name);
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rb_free(ohash);
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}
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}
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