Zabbix

/*

** Copyright (C) 2001-2025 Zabbix SIA

**

** This program is free software: you can redistribute it and/or modify it under the terms of

** the GNU Affero General Public License as published by the Free Software Foundation, version 3.

**

** This program 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 Affero General Public License for more details.

**

** You should have received a copy of the GNU Affero General Public License along with this program.

** If not, see <https://www.gnu.org/licenses/>.

**/

​

#include "zbxregexp.h"

​

#include "zbxstr.h"

#include "zbxtime.h"

​

#ifdef HAVE_PCRE_H

#ifdef HAVE_PCRE2_H

#error "cannot use both pcre and pcre2 at the same time!"

#endif

#define ZBX_REGEXP_MULTILINE PCRE_MULTILINE

#ifdef PCRE_NO_AUTO_CAPTURE

#define ZBX_REGEXP_NO_AUTO_CAPTURE PCRE_NO_AUTO_CAPTURE

#endif

#define ZBX_REGEXP_CASELESS PCRE_CASELESS

#endif

​

#if !defined(HAVE_PCRE_H) && !defined(HAVE_PCRE2_H)

#error "must use pcre or pcre2!"

#endif

​

#ifdef HAVE_PCRE2_H

#   define ZBX_REGEXP_MULTILINE PCRE2_MULTILINE

#   ifdef PCRE2_NO_AUTO_CAPTURE

#       define ZBX_REGEXP_NO_AUTO_CAPTURE PCRE2_NO_AUTO_CAPTURE

#   endif

#   define ZBX_REGEXP_CASELESS PCRE2_CASELESS

#   ifdef PCRE2_MATCH_INVALID_UTF

#       define ZBX_REGEXP_COMPILE_FLAGS (PCRE2_MATCH_INVALID_UTF | PCRE2_UTF)

#   else

#       define ZBX_REGEXP_COMPILE_FLAGS (PCRE2_UTF)

#   endif

#endif

​

struct zbx_regexp

{

#ifdef HAVE_PCRE_H

    pcre            *pcre_regexp;

    struct pcre_extra   *extra;

#endif

#ifdef HAVE_PCRE2_H

    pcre2_code      *pcre2_regexp;

    pcre2_match_context *match_ctx;

#endif

};

​

/* maps to ovector of pcre_exec() */

typedef struct

{

    int rm_so;

    int rm_eo;

}

zbx_regmatch_t;

​

#define ZBX_REGEXP_GROUPS_MAX   10  /* Max number of supported capture groups in regular expressions. */

                    /* Group \0 contains the matching part of string, groups \1 ...\9 */

                    /* contain captured groups (substrings).                          */

​

​

ZBX_PTR_VECTOR_IMPL(expression, zbx_expression_t *)

​

typedef struct

{

    zbx_regmatch_t groups[ZBX_REGEXP_GROUPS_MAX];

}

zbx_match_t;

​

ZBX_PTR_VECTOR_DECL(match, zbx_match_t *)

ZBX_PTR_VECTOR_IMPL(match, zbx_match_t *)

​

#ifdef HAVE_PCRE2_H

static void zbx_match_free(zbx_match_t *match)

{

    zbx_free(match);

}

#endif

​

#if defined(HAVE_PCRE2_H)