/* * $Id: rule.h,v 1.2 2003/10/22 14:15:55 janakj Exp $ * * PERMISSIONS module * * Copyright (C) 2003 Mikl髎 Tirp醟 (mtirpak@sztaki.hu) * * This file is part of ser, a free SIP server. * * ser is free software; you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation; either version 2 of the License, or * (at your option) any later version * * For a license to use the ser software under conditions * other than those described here, or to purchase support for this * software, please contact iptel.org by e-mail at the following addresses: *    info@iptel.org * * ser is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License  * along with this program; if not, write to the Free Software  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA * */ #ifndef RULE_H#define RULE_H 1#include <regex.h>#define EXPRESSION_LENGTH 100	/* maximum length of an expression */#define LINE_LENGTH 500		/* maximum length of lines in the config file */struct rule_struct;typedef struct rule_struct rule;struct expression_struct;typedef struct expression_struct expression;	rule *new_rule(void);void free_rule(rule *r);void print_rule(rule *r);int search_rule(rule *r, char *left, char *right);expression *new_expression(char *str);void free_expression(expression *e);void print_expression(expression *e);int search_expression(expression *e, char *value);/* * stores an expression * value represents the string, and reg_value is the compiled string to POSIX regular expression*/struct expression_struct  {	char	value[EXPRESSION_LENGTH+1];	regex_t	*reg_value;	struct expression_struct	*next;};/* * stores 4 lists of expressions in the following way: * * a, b, c EXCEPT d, e : f, g EXCEPT h * left = a, b, c * left_exceptions = d, e * right = f, g * right_exceptions = h */struct rule_struct {	expression *left, *left_exceptions, *right, *right_exceptions;	struct rule_struct	*next;};#endif /* RULE_H */