mirror of
https://github.com/php/php-src.git
synced 2024-11-28 04:14:26 +08:00
363e0450aa
* PHP-7.2: Fixed bug #76068 parse_ini_string fails to parse "[foo]\nbar=1|>baz" with segfault
426 lines
12 KiB
Plaintext
426 lines
12 KiB
Plaintext
%{
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/*
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+----------------------------------------------------------------------+
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| Zend Engine |
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+----------------------------------------------------------------------+
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| Copyright (c) 1998-2018 Zend Technologies Ltd. (http://www.zend.com) |
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+----------------------------------------------------------------------+
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| This source file is subject to version 2.00 of the Zend 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.zend.com/license/2_00.txt. |
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| If you did not receive a copy of the Zend 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@zend.com so we can mail you a copy immediately. |
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+----------------------------------------------------------------------+
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| Authors: Zeev Suraski <zeev@zend.com> |
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| Jani Taskinen <jani@php.net> |
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+----------------------------------------------------------------------+
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*/
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/* $Id$ */
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#define DEBUG_CFG_PARSER 0
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#include "zend.h"
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#include "zend_API.h"
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#include "zend_ini.h"
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#include "zend_constants.h"
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#include "zend_ini_scanner.h"
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#include "zend_extensions.h"
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#ifdef ZEND_WIN32
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#include "win32/syslog.h"
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#endif
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#define YYERROR_VERBOSE
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#define YYSTYPE zval
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int ini_parse(void);
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#define ZEND_INI_PARSER_CB (CG(ini_parser_param))->ini_parser_cb
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#define ZEND_INI_PARSER_ARG (CG(ini_parser_param))->arg
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#ifdef _MSC_VER
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#define YYMALLOC malloc
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#define YYFREE free
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#endif
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#define ZEND_SYSTEM_INI CG(ini_parser_unbuffered_errors)
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/* {{{ zend_ini_do_op()
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*/
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static void zend_ini_do_op(char type, zval *result, zval *op1, zval *op2)
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{
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int i_result;
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int i_op1, i_op2;
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int str_len;
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char str_result[MAX_LENGTH_OF_LONG+1];
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if (IS_LONG == Z_TYPE_P(op1)) {
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i_op1 = Z_LVAL_P(op1);
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} else {
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i_op1 = atoi(Z_STRVAL_P(op1));
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zend_string_free(Z_STR_P(op1));
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}
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if (op2) {
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if (IS_LONG == Z_TYPE_P(op2)) {
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i_op2 = Z_LVAL_P(op2);
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} else {
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i_op2 = atoi(Z_STRVAL_P(op2));
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zend_string_free(Z_STR_P(op2));
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}
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} else {
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i_op2 = 0;
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}
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switch (type) {
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case '|':
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i_result = i_op1 | i_op2;
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break;
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case '&':
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i_result = i_op1 & i_op2;
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break;
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case '^':
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i_result = i_op1 ^ i_op2;
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break;
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case '~':
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i_result = ~i_op1;
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break;
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case '!':
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i_result = !i_op1;
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break;
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default:
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i_result = 0;
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break;
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}
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str_len = zend_sprintf(str_result, "%d", i_result);
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ZVAL_NEW_STR(result, zend_string_init(str_result, str_len, ZEND_SYSTEM_INI));
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}
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/* }}} */
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/* {{{ zend_ini_init_string()
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*/
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static void zend_ini_init_string(zval *result)
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{
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if (ZEND_SYSTEM_INI) {
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ZVAL_EMPTY_PSTRING(result);
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} else {
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ZVAL_EMPTY_STRING(result);
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}
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}
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/* }}} */
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/* {{{ zend_ini_add_string()
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*/
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static void zend_ini_add_string(zval *result, zval *op1, zval *op2)
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{
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int length, op1_len;
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if (Z_TYPE_P(op1) != IS_STRING) {
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/* ZEND_ASSERT(!Z_REFCOUNTED_P(op1)); */
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if (ZEND_SYSTEM_INI) {
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zend_string *tmp_str;
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zend_string *str = zval_get_tmp_string(op1, &tmp_str);
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ZVAL_PSTRINGL(op1, ZSTR_VAL(str), ZSTR_LEN(str));
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zend_tmp_string_release(tmp_str);
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} else {
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ZVAL_STR(op1, zval_get_string_func(op1));
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}
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}
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op1_len = (int)Z_STRLEN_P(op1);
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if (Z_TYPE_P(op2) != IS_STRING) {
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convert_to_string(op2);
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}
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length = op1_len + (int)Z_STRLEN_P(op2);
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ZVAL_NEW_STR(result, zend_string_extend(Z_STR_P(op1), length, ZEND_SYSTEM_INI));
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memcpy(Z_STRVAL_P(result) + op1_len, Z_STRVAL_P(op2), Z_STRLEN_P(op2) + 1);
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}
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/* }}} */
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/* {{{ zend_ini_get_constant()
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*/
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static void zend_ini_get_constant(zval *result, zval *name)
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{
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zval *c, tmp;
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/* If name contains ':' it is not a constant. Bug #26893. */
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if (!memchr(Z_STRVAL_P(name), ':', Z_STRLEN_P(name))
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&& (c = zend_get_constant(Z_STR_P(name))) != 0) {
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if (Z_TYPE_P(c) != IS_STRING) {
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ZVAL_COPY_OR_DUP(&tmp, c);
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if (Z_OPT_CONSTANT(tmp)) {
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zval_update_constant_ex(&tmp, NULL);
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}
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convert_to_string(&tmp);
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c = &tmp;
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}
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ZVAL_NEW_STR(result, zend_string_init(Z_STRVAL_P(c), Z_STRLEN_P(c), ZEND_SYSTEM_INI));
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if (c == &tmp) {
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zend_string_release(Z_STR(tmp));
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}
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zend_string_free(Z_STR_P(name));
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} else {
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*result = *name;
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}
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}
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/* }}} */
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/* {{{ zend_ini_get_var()
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*/
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static void zend_ini_get_var(zval *result, zval *name)
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{
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zval *curval;
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char *envvar;
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/* Fetch configuration option value */
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if ((curval = zend_get_configuration_directive(Z_STR_P(name))) != NULL) {
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ZVAL_NEW_STR(result, zend_string_init(Z_STRVAL_P(curval), Z_STRLEN_P(curval), ZEND_SYSTEM_INI));
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/* ..or if not found, try ENV */
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} else if ((envvar = zend_getenv(Z_STRVAL_P(name), Z_STRLEN_P(name))) != NULL ||
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(envvar = getenv(Z_STRVAL_P(name))) != NULL) {
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ZVAL_NEW_STR(result, zend_string_init(envvar, strlen(envvar), ZEND_SYSTEM_INI));
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} else {
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zend_ini_init_string(result);
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}
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}
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/* }}} */
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/* {{{ ini_error()
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*/
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static ZEND_COLD void ini_error(const char *msg)
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{
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char *error_buf;
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int error_buf_len;
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char *currently_parsed_filename;
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currently_parsed_filename = zend_ini_scanner_get_filename();
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if (currently_parsed_filename) {
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error_buf_len = 128 + (int)strlen(msg) + (int)strlen(currently_parsed_filename); /* should be more than enough */
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error_buf = (char *) emalloc(error_buf_len);
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sprintf(error_buf, "%s in %s on line %d\n", msg, currently_parsed_filename, zend_ini_scanner_get_lineno());
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} else {
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error_buf = estrdup("Invalid configuration directive\n");
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}
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if (CG(ini_parser_unbuffered_errors)) {
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#ifdef ZEND_WIN32
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syslog(LOG_ALERT, "PHP: %s (%s)", error_buf, GetCommandLine());
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#endif
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fprintf(stderr, "PHP: %s", error_buf);
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} else {
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zend_error(E_WARNING, "%s", error_buf);
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}
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efree(error_buf);
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}
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/* }}} */
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/* {{{ zend_parse_ini_file()
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*/
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ZEND_API int zend_parse_ini_file(zend_file_handle *fh, zend_bool unbuffered_errors, int scanner_mode, zend_ini_parser_cb_t ini_parser_cb, void *arg)
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{
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int retval;
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zend_ini_parser_param ini_parser_param;
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ini_parser_param.ini_parser_cb = ini_parser_cb;
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ini_parser_param.arg = arg;
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CG(ini_parser_param) = &ini_parser_param;
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if (zend_ini_open_file_for_scanning(fh, scanner_mode) == FAILURE) {
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return FAILURE;
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}
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CG(ini_parser_unbuffered_errors) = unbuffered_errors;
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retval = ini_parse();
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zend_file_handle_dtor(fh);
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shutdown_ini_scanner();
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if (retval == 0) {
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return SUCCESS;
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} else {
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return FAILURE;
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}
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}
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/* }}} */
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/* {{{ zend_parse_ini_string()
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*/
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ZEND_API int zend_parse_ini_string(char *str, zend_bool unbuffered_errors, int scanner_mode, zend_ini_parser_cb_t ini_parser_cb, void *arg)
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{
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int retval;
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zend_ini_parser_param ini_parser_param;
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ini_parser_param.ini_parser_cb = ini_parser_cb;
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ini_parser_param.arg = arg;
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CG(ini_parser_param) = &ini_parser_param;
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if (zend_ini_prepare_string_for_scanning(str, scanner_mode) == FAILURE) {
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return FAILURE;
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}
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CG(ini_parser_unbuffered_errors) = unbuffered_errors;
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retval = ini_parse();
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shutdown_ini_scanner();
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if (retval == 0) {
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return SUCCESS;
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} else {
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return FAILURE;
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}
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}
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/* }}} */
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%}
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%expect 0
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%pure-parser
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%token TC_SECTION
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%token TC_RAW
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%token TC_CONSTANT
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%token TC_NUMBER
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%token TC_STRING
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%token TC_WHITESPACE
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%token TC_LABEL
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%token TC_OFFSET
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%token TC_DOLLAR_CURLY
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%token TC_VARNAME
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%token TC_QUOTED_STRING
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%token BOOL_TRUE
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%token BOOL_FALSE
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%token NULL_NULL
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%token END_OF_LINE
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%token '=' ':' ',' '.' '"' '\'' '^' '+' '-' '/' '*' '%' '$' '~' '<' '>' '?' '@' '{' '}'
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%left '|' '&' '^'
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%right '~' '!'
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%destructor { zval_ptr_dtor(&$$); } TC_RAW TC_CONSTANT TC_NUMBER TC_STRING TC_WHITESPACE TC_LABEL TC_OFFSET TC_VARNAME BOOL_TRUE BOOL_FALSE NULL_NULL
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%%
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statement_list:
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statement_list statement
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| /* empty */
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;
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statement:
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TC_SECTION section_string_or_value ']' {
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#if DEBUG_CFG_PARSER
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printf("SECTION: [%s]\n", Z_STRVAL($2));
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#endif
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ZEND_INI_PARSER_CB(&$2, NULL, NULL, ZEND_INI_PARSER_SECTION, ZEND_INI_PARSER_ARG);
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zend_string_release(Z_STR($2));
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}
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| TC_LABEL '=' string_or_value {
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#if DEBUG_CFG_PARSER
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printf("NORMAL: '%s' = '%s'\n", Z_STRVAL($1), Z_STRVAL($3));
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#endif
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ZEND_INI_PARSER_CB(&$1, &$3, NULL, ZEND_INI_PARSER_ENTRY, ZEND_INI_PARSER_ARG);
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zend_string_release(Z_STR($1));
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zval_ptr_dtor(&$3);
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}
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| TC_OFFSET option_offset ']' '=' string_or_value {
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#if DEBUG_CFG_PARSER
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printf("OFFSET: '%s'[%s] = '%s'\n", Z_STRVAL($1), Z_STRVAL($2), Z_STRVAL($5));
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#endif
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ZEND_INI_PARSER_CB(&$1, &$5, &$2, ZEND_INI_PARSER_POP_ENTRY, ZEND_INI_PARSER_ARG);
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zend_string_release(Z_STR($1));
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if (Z_TYPE($2) == IS_STRING) {
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zend_string_release(Z_STR($2));
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} else {
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zval_dtor(&$2);
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}
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zval_ptr_dtor(&$5);
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}
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| TC_LABEL { ZEND_INI_PARSER_CB(&$1, NULL, NULL, ZEND_INI_PARSER_ENTRY, ZEND_INI_PARSER_ARG); zend_string_release(Z_STR($1)); }
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| END_OF_LINE
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;
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section_string_or_value:
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var_string_list_section { $$ = $1; }
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| /* empty */ { zend_ini_init_string(&$$); }
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;
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string_or_value:
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expr { $$ = $1; }
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| BOOL_TRUE { $$ = $1; }
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| BOOL_FALSE { $$ = $1; }
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| NULL_NULL { $$ = $1; }
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| END_OF_LINE { zend_ini_init_string(&$$); }
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;
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option_offset:
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var_string_list { $$ = $1; }
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| /* empty */ { zend_ini_init_string(&$$); }
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;
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encapsed_list:
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encapsed_list cfg_var_ref { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
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| encapsed_list TC_QUOTED_STRING { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
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| /* empty */ { zend_ini_init_string(&$$); }
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;
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var_string_list_section:
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cfg_var_ref { $$ = $1; }
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| constant_literal { $$ = $1; }
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| '"' encapsed_list '"' { $$ = $2; }
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| var_string_list_section cfg_var_ref { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
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| var_string_list_section constant_literal { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
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| var_string_list_section '"' encapsed_list '"' { zend_ini_add_string(&$$, &$1, &$3); zend_string_free(Z_STR($3)); }
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;
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var_string_list:
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cfg_var_ref { $$ = $1; }
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| constant_string { $$ = $1; }
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| '"' encapsed_list '"' { $$ = $2; }
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| var_string_list cfg_var_ref { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
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| var_string_list constant_string { zend_ini_add_string(&$$, &$1, &$2); zend_string_free(Z_STR($2)); }
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| var_string_list '"' encapsed_list '"' { zend_ini_add_string(&$$, &$1, &$3); zend_string_free(Z_STR($3)); }
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;
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expr:
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var_string_list { $$ = $1; }
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| expr '|' expr { zend_ini_do_op('|', &$$, &$1, &$3); }
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| expr '&' expr { zend_ini_do_op('&', &$$, &$1, &$3); }
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| expr '^' expr { zend_ini_do_op('^', &$$, &$1, &$3); }
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| '~' expr { zend_ini_do_op('~', &$$, &$2, NULL); }
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| '!' expr { zend_ini_do_op('!', &$$, &$2, NULL); }
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| '(' expr ')' { $$ = $2; }
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;
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cfg_var_ref:
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TC_DOLLAR_CURLY TC_VARNAME '}' { zend_ini_get_var(&$$, &$2); zend_string_free(Z_STR($2)); }
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;
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constant_literal:
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TC_CONSTANT { $$ = $1; }
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| TC_RAW { $$ = $1; /*printf("TC_RAW: '%s'\n", Z_STRVAL($1));*/ }
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| TC_NUMBER { $$ = $1; /*printf("TC_NUMBER: '%s'\n", Z_STRVAL($1));*/ }
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| TC_STRING { $$ = $1; /*printf("TC_STRING: '%s'\n", Z_STRVAL($1));*/ }
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| TC_WHITESPACE { $$ = $1; /*printf("TC_WHITESPACE: '%s'\n", Z_STRVAL($1));*/ }
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;
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constant_string:
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TC_CONSTANT { zend_ini_get_constant(&$$, &$1); }
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| TC_RAW { $$ = $1; /*printf("TC_RAW: '%s'\n", Z_STRVAL($1));*/ }
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| TC_NUMBER { $$ = $1; /*printf("TC_NUMBER: '%s'\n", Z_STRVAL($1));*/ }
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| TC_STRING { $$ = $1; /*printf("TC_STRING: '%s'\n", Z_STRVAL($1));*/ }
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| TC_WHITESPACE { $$ = $1; /*printf("TC_WHITESPACE: '%s'\n", Z_STRVAL($1));*/ }
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;
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/*
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* Local variables:
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* tab-width: 4
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* c-basic-offset: 4
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* indent-tabs-mode: t
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* End:
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* vim600: sw=4 ts=4 fdm=marker
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* vim<600: sw=4 ts=4
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*/
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