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f4b2497ad8
Create a separate general context that uses ZMM as allocator and use it to allocate temporary PCRE match data (there is still one global match data). There is no requirement that the match data and the compiled regex / match context use the same general context. This makes sure that we do not leak persistent memory on bailout and fixes oss-fuzz #25296, on which half the libfuzzer runs currently get stuck.
97 lines
3.9 KiB
C
97 lines
3.9 KiB
C
/*
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+----------------------------------------------------------------------+
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| Copyright (c) The PHP Group |
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+----------------------------------------------------------------------+
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| This source file is subject to version 3.01 of the PHP license, |
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| that is bundled with this package in the file LICENSE, and is |
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| available through the world-wide-web at the following url: |
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| http://www.php.net/license/3_01.txt |
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| If you did not receive a copy of the PHP license and are unable to |
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| obtain it through the world-wide-web, please send a note to |
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| license@php.net so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Author: Andrei Zmievski <andrei@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifndef PHP_PCRE_H
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#define PHP_PCRE_H
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#ifdef HAVE_BUNDLED_PCRE
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#include "pcre2lib/pcre2.h"
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#else
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#include "pcre2.h"
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#endif
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#include <locale.h>
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PHPAPI zend_string *php_pcre_replace(zend_string *regex, zend_string *subject_str, const char *subject, size_t subject_len, zend_string *replace_str, size_t limit, size_t *replace_count);
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PHPAPI pcre2_code* pcre_get_compiled_regex(zend_string *regex, uint32_t *capture_count);
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PHPAPI pcre2_code* pcre_get_compiled_regex_ex(zend_string *regex, uint32_t *capture_count, uint32_t *preg_options, uint32_t *coptions);
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extern zend_module_entry pcre_module_entry;
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#define pcre_module_ptr &pcre_module_entry
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#include "php_version.h"
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#define PHP_PCRE_VERSION PHP_VERSION
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typedef struct _pcre_cache_entry pcre_cache_entry;
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typedef enum {
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PHP_PCRE_NO_ERROR = 0,
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PHP_PCRE_INTERNAL_ERROR,
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PHP_PCRE_BACKTRACK_LIMIT_ERROR,
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PHP_PCRE_RECURSION_LIMIT_ERROR,
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PHP_PCRE_BAD_UTF8_ERROR,
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PHP_PCRE_BAD_UTF8_OFFSET_ERROR,
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PHP_PCRE_JIT_STACKLIMIT_ERROR
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} php_pcre_error_code;
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PHPAPI pcre_cache_entry* pcre_get_compiled_regex_cache(zend_string *regex);
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PHPAPI pcre_cache_entry* pcre_get_compiled_regex_cache_ex(zend_string *regex, int locale_aware);
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PHPAPI void php_pcre_match_impl(pcre_cache_entry *pce, zend_string *subject_str, zval *return_value,
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zval *subpats, int global, int use_flags, zend_long flags, zend_off_t start_offset);
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PHPAPI zend_string *php_pcre_replace_impl(pcre_cache_entry *pce, zend_string *subject_str, const char *subject, size_t subject_len, zend_string *replace_str,
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size_t limit, size_t *replace_count);
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PHPAPI void php_pcre_split_impl( pcre_cache_entry *pce, zend_string *subject_str, zval *return_value,
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zend_long limit_val, zend_long flags);
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PHPAPI void php_pcre_grep_impl( pcre_cache_entry *pce, zval *input, zval *return_value,
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zend_long flags);
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PHPAPI pcre2_match_context *php_pcre_mctx(void);
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PHPAPI pcre2_general_context *php_pcre_gctx(void);
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PHPAPI pcre2_compile_context *php_pcre_cctx(void);
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PHPAPI void php_pcre_pce_incref(pcre_cache_entry *);
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PHPAPI void php_pcre_pce_decref(pcre_cache_entry *);
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PHPAPI pcre2_code *php_pcre_pce_re(pcre_cache_entry *);
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/* capture_count can be ignored, re is required. */
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PHPAPI pcre2_match_data *php_pcre_create_match_data(uint32_t, pcre2_code *);
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PHPAPI void php_pcre_free_match_data(pcre2_match_data *);
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ZEND_BEGIN_MODULE_GLOBALS(pcre)
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HashTable pcre_cache;
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zend_long backtrack_limit;
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zend_long recursion_limit;
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#ifdef HAVE_PCRE_JIT_SUPPORT
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zend_bool jit;
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#endif
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zend_bool per_request_cache;
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php_pcre_error_code error_code;
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/* Used for unmatched subpatterns in OFFSET_CAPTURE mode */
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zval unmatched_null_pair;
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zval unmatched_empty_pair;
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/* General context using per-request allocator (ZMM). */
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pcre2_general_context *gctx_zmm;
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ZEND_END_MODULE_GLOBALS(pcre)
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PHPAPI ZEND_EXTERN_MODULE_GLOBALS(pcre)
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#define PCRE_G(v) ZEND_MODULE_GLOBALS_ACCESSOR(pcre, v)
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#define phpext_pcre_ptr pcre_module_ptr
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#endif /* PHP_PCRE_H */
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