text: /*
   * include/common/regex.h
   * This file defines everything related to regular expressions.
   *
   * Copyright (C) 2000-2010 Willy Tarreau - w@1wt.eu
   *
   * 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 _COMMON_REGEX_H
  #define _COMMON_REGEX_H
  
  #include <common/config.h>
  
  #ifdef USE_PCRE
  #include <pcre.h>
  #include <pcreposix.h>
  #else
  #include <regex.h>
  #endif
  
  /* what to do when a header matches a regex */
  #define ACT_ALLOW	0	/* allow the request */
  #define ACT_REPLACE	1	/* replace the matching header */
  #define ACT_REMOVE	2	/* remove the matching header */
  #define ACT_DENY	3	/* deny the request */
  #define ACT_PASS	4	/* pass this header without allowing or denying the request */
  #define ACT_TARPIT	5	/* tarpit the connection matching this request */
  #define ACT_SETBE	6	/* switch the backend */
  
  struct hdr_exp {
      struct hdr_exp *next;
      const regex_t *preg;		/* expression to look for */
      int action;				/* ACT_ALLOW, ACT_REPLACE, ACT_REMOVE, ACT_DENY */
      const char *replace;		/* expression to set instead */
      void *cond;				/* a possible condition or NULL */
  };
  
  extern regmatch_t pmatch[MAX_MATCH];
  
  int exp_replace(char *dst, unsigned int dst_size, char *src, const char *str, const regmatch_t *matches);
  const char *check_replace_string(const char *str);
  const char *chain_regex(struct hdr_exp **head, const regex_t *preg,
  			int action, const char *replace, void *cond);
  
  #endif /* _COMMON_REGEX_H */
  
  /*
   * Local variables:
   *  c-indent-level: 8
   *  c-basic-offset: 8
   * End:
   */
  