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98 lines
2.6 KiB
98 lines
2.6 KiB
/*
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* $Id$
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*
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* Copyright (C) 2006 iptelorg GmbH
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*
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* This file is part of ser, a free SIP server.
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*
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* ser is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version
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*
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* For a license to use the ser software under conditions
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* other than those described here, or to purchase support for this
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* software, please contact iptel.org by e-mail at the following addresses:
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* info@iptel.org
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*
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* ser 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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#ifndef _IM_HASH_H
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#define _IM_HASH_H
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#include "../../ip_addr.h"
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#include "../../locking.h"
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/* linked list of entries */
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typedef struct im_entry {
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struct ip_addr ip;
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unsigned short port;
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str avp_val;
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unsigned int mark;
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struct im_entry *next;
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} im_entry_t;
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/* hash table for the entries */
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typedef struct im_hash {
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im_entry_t **entries;
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gen_lock_t read_lock; /* lock for reader_count variable */
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gen_lock_t write_lock; /* lock for writer processes */
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int reader_count; /* number of reader processes */
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int writer_demand; /* writer processes set this flag */
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} im_hash_t;
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/* global variable for DB cache */
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extern im_hash_t *IM_HASH;
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/* parse ipv4 or ipv6 address
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*/
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int parse_ip(str *s, struct ip_addr *ip, unsigned short *port);
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/* hash function for ipmatch hash table
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* in case of ipv4:
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* summarizes the 4 unsigned char values
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* in case of ipv6:
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* summarizes the 1st, 5th, 9th, and 13th unsigned char values
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*/
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unsigned int im_hash(struct ip_addr *ip);
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/* init global IM_HASH structure */
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int init_im_hash(void);
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/* free memory allocated for the global cache */
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void destroy_im_hash(void);
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/* create a new impatch hash table */
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im_entry_t **new_im_hash(void);
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/* free the memory allocated for an ipmatch hash table,
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* and purge out entries
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*/
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void free_im_hash(im_entry_t **hash);
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/* free the memory allocated for an ipmatch hash table,
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* but do not purge out entries
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*/
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void delete_im_hash(im_entry_t **hash);
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/* create a new ipmatch entry and insert it into the hash table
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* return value
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* 0: success
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* -1: error
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*/
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int insert_im_hash(char *ip, char *avp_val, unsigned int mark,
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im_entry_t **hash);
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#endif /* _IM_HASH_H */
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