mirror of
https://github.com/BlackLight/Snort_AIPreproc.git
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115 lines
3.2 KiB
C
115 lines
3.2 KiB
C
/****************************************************************************
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*
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* Copyright (C) 2003-2010 Sourcefire, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License Version 2 as
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* published by the Free Software Foundation. You may not use, modify or
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* distribute this program under any other version of the GNU General
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* Public License.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*
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****************************************************************************/
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/*
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*
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* sfghash.h
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*
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* generic hash table - stores and maps key + data pairs
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*
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* Author: Marc Norton
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*
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*/
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#ifndef _SFGHASH_
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#define _SFGHASH_
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#include <stdlib.h>
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#include <string.h>
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#include <time.h>
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#include "sfhashfcn.h"
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/*
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* ERROR DEFINES
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*/
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#define SFGHASH_NOMEM -2
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#define SFGHASH_ERR -1
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#define SFGHASH_OK 0
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#define SFGHASH_INTABLE 1
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/*
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* Flags for ghash_new: userkeys
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*/
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#define GH_COPYKEYS 0
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#define GH_USERKEYS 1
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/*
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* Generic HASH NODE
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*/
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typedef struct _sfghash_node
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{
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struct _sfghash_node * next, * prev;
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void * key; /* Copy of, or Pointer to, the Users key */
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void * data; /* Pointer to the users data, this is never copied! */
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} SFGHASH_NODE;
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/*
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* Generic HASH table
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*/
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typedef struct _sfghash
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{
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SFHASHFCN * sfhashfcn;
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int keysize; /* bytes in key, if < 0 -> keys are strings */
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int userkey; /* user owns the key */
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SFGHASH_NODE ** table; /* array of node ptr's */
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int nrows; /* # rows int the hash table use a prime number 211, 9871 */
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unsigned count; /* total # nodes in table */
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void (*userfree)( void * );
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int crow; /* findfirst/next row in table */
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SFGHASH_NODE * cnode; /* findfirst/next node ptr */
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int splay;
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} SFGHASH, SFDICT;
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/*
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* HASH PROTOTYPES
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*/
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SFGHASH * sfghash_new( int nrows, int keysize, int userkeys, void (*userfree)(void*p) );
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void sfghash_delete( SFGHASH * h );
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int sfghash_add ( SFGHASH * h, void * key, void * data );
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int sfghash_remove( SFGHASH * h, void * key);
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int sfghash_count( SFGHASH * h);
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void * sfghash_find( SFGHASH * h, void * key );
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int sfghash_find2(SFGHASH *, void *, void **);
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SFGHASH_NODE * sfghash_findfirst( SFGHASH * h );
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SFGHASH_NODE * sfghash_findnext ( SFGHASH * h );
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void sfghash_splaymode( SFGHASH * t, int n );
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int sfghash_set_keyops( SFGHASH *h ,
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unsigned (*hash_fcn)( SFHASHFCN * p,
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unsigned char *d,
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int n),
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int (*keycmp_fcn)( const void *s1,
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const void *s2,
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size_t n));
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#endif
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