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https://github.com/haproxy/haproxy.git
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9e92d327f7
Some converters will need one or several arguments. It's not possible to write a simple generic parser for that, so let's add the ability for each converter to support its own argument parser, and call it to get the arguments when it's specified. If unspecified, the arguments are passed unmodified as string+len.
109 lines
3.9 KiB
C
109 lines
3.9 KiB
C
/*
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* include/types/pattern.h
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* Macros, variables and structures for patterns management.
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*
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* Copyright (C) 2009-2010 EXCELIANCE, Emeric Brun <ebrun@exceliance.fr>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation, version 2.1
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* exclusively.
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*
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* This library 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 GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef _TYPES_PATTERN_H
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#define _TYPES_PATTERN_H
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#include <types/buffers.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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/* pattern in and out types */
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enum {
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PATTERN_TYPE_IP = 0, /* ipv4 type */
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PATTERN_TYPE_INTEGER = 1, /* unsigned 32bits integer type */
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PATTERN_TYPE_STRING = 2, /* char string type */
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PATTERN_TYPES
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};
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/* pattern fetch direction */
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#define PATTERN_FETCH_REQ 1
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#define PATTERN_FETCH_RTR 2
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/* pattern result data */
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union pattern_data {
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struct in_addr ip; /* used for ipv4 type */
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uint32_t integer; /* used for unsigned 32bits integer type */
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struct chunk str; /* used for char string type */
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};
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/* pattern result */
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struct pattern {
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int type; /* current type of data */
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union pattern_data data; /* data */
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};
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/* pattern conversion */
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struct pattern_conv {
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const char *kw; /* configuration keyword */
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int (*process)(const void *arg_p,
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int arg_i,
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union pattern_data *data); /* process function */
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unsigned int in_type; /* input needed pattern type */
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unsigned int out_type; /* output pattern type */
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int (*parse_args)(const char *arg_str,
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void **arg_p,
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int *arg_i); /* argument parser. Can be NULL. */
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};
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/* pattern conversion expression */
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struct pattern_conv_expr {
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struct list list; /* member of a pattern expression */
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struct pattern_conv *conv; /* pattern conversion */
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void *arg_p; /* pointer arg, most often a string argument */
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int arg_i; /* int arg, most often the argument's length */
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};
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/* pattern fetch */
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struct pattern_fetch {
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const char *kw; /* configuration keyword */
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int (*process)(struct proxy *px,
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struct session *l4,
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void *l7,
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int dir, const char *arg,
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int arg_len,
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union pattern_data *data); /* fetch processing function */
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unsigned long out_type; /* output pattern type */
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int dir; /* usable directions */
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};
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/* pattern expression */
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struct pattern_expr {
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struct list list; /* member of list of pattern, currently not used */
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struct pattern_fetch *fetch; /* pattern fetch */
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char *arg; /* configured keyword argument */
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int arg_len; /* configured keyword argument length */
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struct list conv_exprs; /* list of conversion expression to apply */
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};
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/* pattern fetch keywords list */
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struct pattern_fetch_kw_list {
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struct list list; /* head of pattern fetch keyword list */
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struct pattern_fetch kw[VAR_ARRAY]; /* array of pattern fetches */
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};
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/* pattern conversion keywords list */
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struct pattern_conv_kw_list {
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struct list list; /* head of pattern conversion keyword list */
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struct pattern_conv kw[VAR_ARRAY]; /* array of pattern ions */
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};
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#endif /* _TYPES_PATTERN_H */
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