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/*
* include/types/pattern.h
* Macros, variables and structures for patterns management.
*
* Copyright (C) 2009-2010 EXCELIANCE, Emeric Brun <ebrun@exceliance.fr>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation, version 2.1
* exclusively.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef _TYPES_PATTERN_H
#define _TYPES_PATTERN_H
#include <types/buffers.h>
#include <sys/socket.h>
#include <netinet/in.h>
/* pattern in and out types */
enum {
PATTERN_TYPE_IP = 0, /* ipv4 type */
PATTERN_TYPE_INTEGER = 1, /* unsigned 32bits integer type */
PATTERN_TYPE_STRING = 2, /* char string type */
PATTERN_TYPES
};
/* pattern fetch direction */
#define PATTERN_FETCH_REQ 1
#define PATTERN_FETCH_RTR 2
/* pattern result data */
union pattern_data {
struct in_addr ip; /* used for ipv4 type */
uint32_t integer; /* used for unsigned 32bits integer type */
struct chunk str; /* used for char string type */
};
/* pattern result */
struct pattern {
int type; /* current type of data */
union pattern_data data; /* data */
};
/* pattern conversion */
struct pattern_conv {
const char *kw; /* configuration keyword */
int (*process)(const void *arg_p,
int arg_i,
union pattern_data *data); /* process function */
unsigned int in_type; /* input needed pattern type */
unsigned int out_type; /* output pattern type */
int (*parse_args)(const char *arg_str,
void **arg_p,
int *arg_i); /* argument parser. Can be NULL. */
};
/* pattern conversion expression */
struct pattern_conv_expr {
struct list list; /* member of a pattern expression */
struct pattern_conv *conv; /* pattern conversion */
void *arg_p; /* pointer arg, most often a string argument */
int arg_i; /* int arg, most often the argument's length */
};
/* pattern fetch */
struct pattern_fetch {
const char *kw; /* configuration keyword */
int (*process)(struct proxy *px,
struct session *l4,
void *l7,
int dir, const char *arg,
int arg_len,
union pattern_data *data); /* fetch processing function */
unsigned long out_type; /* output pattern type */
int dir; /* usable directions */
};
/* pattern expression */
struct pattern_expr {
struct list list; /* member of list of pattern, currently not used */
struct pattern_fetch *fetch; /* pattern fetch */
char *arg; /* configured keyword argument */
int arg_len; /* configured keyword argument length */
struct list conv_exprs; /* list of conversion expression to apply */
};
/* pattern fetch keywords list */
struct pattern_fetch_kw_list {
struct list list; /* head of pattern fetch keyword list */
struct pattern_fetch kw[VAR_ARRAY]; /* array of pattern fetches */
};
/* pattern conversion keywords list */
struct pattern_conv_kw_list {
struct list list; /* head of pattern conversion keyword list */
struct pattern_conv kw[VAR_ARRAY]; /* array of pattern ions */
};
#endif /* _TYPES_PATTERN_H */
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