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ce682f1b26
It can happen that the underlying pointer is freed (like in the case of connection reconnect), and then it cannot be allocated anymore, which means that NULL will be used consequently by the functions that fetch the resource and the crash is immediate.
350 lines
8.9 KiB
C
350 lines
8.9 KiB
C
/*
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+----------------------------------------------------------------------+
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| PHP Version 5 |
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+----------------------------------------------------------------------+
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| Copyright (c) 1997-2010 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: Georg Richter <georg@php.net> |
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+----------------------------------------------------------------------+
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#include <signal.h>
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#include "php.h"
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#include "php_ini.h"
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#include "ext/standard/info.h"
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#include "php_mysqli_structs.h"
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/* Define these in the PHP5 tree to make merging easy process */
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#define ZSTR_DUPLICATE (1<<0)
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#define ZSTR_AUTOFREE (1<<1)
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#define ZVAL_UTF8_STRING(z, s, flags) ZVAL_STRING((z), (char*)(s), ((flags) & ZSTR_DUPLICATE))
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#define ZVAL_UTF8_STRINGL(z, s, l, flags) ZVAL_STRINGL((z), (char*)(s), (l), ((flags) & ZSTR_DUPLICATE))
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/* {{{ void php_clear_warnings() */
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void php_clear_warnings(MYSQLI_WARNING *w)
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{
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MYSQLI_WARNING *n;
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while (w) {
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n = w;
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zval_dtor(&(w->reason));
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zval_dtor(&(w->sqlstate));
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w = w->next;
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efree(n);
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}
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}
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/* }}} */
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#ifndef MYSQLI_USE_MYSQLND
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/* {{{ MYSQLI_WARNING *php_new_warning */
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static
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MYSQLI_WARNING *php_new_warning(const char *reason, int errorno TSRMLS_DC)
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{
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MYSQLI_WARNING *w;
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w = (MYSQLI_WARNING *)ecalloc(1, sizeof(MYSQLI_WARNING));
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ZVAL_UTF8_STRING(&(w->reason), reason, ZSTR_DUPLICATE);
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ZVAL_UTF8_STRINGL(&(w->sqlstate), "HY000", sizeof("HY000") - 1, ZSTR_DUPLICATE);
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w->errorno = errorno;
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return w;
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}
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/* }}} */
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/* {{{ MYSQLI_WARNING *php_get_warnings(MYSQL *mysql TSRMLS_DC) */
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MYSQLI_WARNING *php_get_warnings(MYSQL *mysql TSRMLS_DC)
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{
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MYSQLI_WARNING *w, *first = NULL, *prev = NULL;
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MYSQL_RES *result;
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MYSQL_ROW row;
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if (mysql_real_query(mysql, "SHOW WARNINGS", 13)) {
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return NULL;
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}
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result = mysql_store_result(mysql);
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while ((row = mysql_fetch_row(result))) {
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w = php_new_warning(row[2], atoi(row[1]) TSRMLS_CC);
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if (!first) {
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first = w;
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}
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if (prev) {
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prev->next = w;
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}
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prev = w;
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}
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mysql_free_result(result);
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return first;
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}
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/* }}} */
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#else
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/* {{{ MYSQLI_WARNING *php_new_warning */
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static
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MYSQLI_WARNING *php_new_warning(const zval *reason, int errorno TSRMLS_DC)
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{
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MYSQLI_WARNING *w;
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w = (MYSQLI_WARNING *)ecalloc(1, sizeof(MYSQLI_WARNING));
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w->reason = *reason;
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zval_copy_ctor(&(w->reason));
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ZVAL_UTF8_STRINGL(&(w->reason), Z_STRVAL(w->reason), Z_STRLEN(w->reason), ZSTR_AUTOFREE);
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ZVAL_UTF8_STRINGL(&(w->sqlstate), "HY000", sizeof("HY000") - 1, ZSTR_DUPLICATE);
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w->errorno = errorno;
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return w;
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}
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/* }}} */
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/* {{{ MYSQLI_WARNING *php_get_warnings(MYSQL *mysql TSRMLS_DC) */
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MYSQLI_WARNING *php_get_warnings(MYSQL *mysql TSRMLS_DC)
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{
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MYSQLI_WARNING *w, *first = NULL, *prev = NULL;
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MYSQL_RES *result;
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zval *row;
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if (mysql_real_query(mysql, "SHOW WARNINGS", 13)) {
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return NULL;
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}
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result = mysql_use_result(mysql);
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for (;;) {
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zval **entry;
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int errno;
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MAKE_STD_ZVAL(row);
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mysqlnd_fetch_into(result, MYSQLND_FETCH_NUM, row, MYSQLND_MYSQLI);
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if (Z_TYPE_P(row) != IS_ARRAY) {
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zval_ptr_dtor(&row);
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break;
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}
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zend_hash_internal_pointer_reset(Z_ARRVAL_P(row));
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/* 0. we don't care about the first */
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zend_hash_move_forward(Z_ARRVAL_P(row));
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/* 1. Here comes the error no */
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zend_hash_get_current_data(Z_ARRVAL_P(row), (void **)&entry);
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convert_to_long_ex(entry);
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errno = Z_LVAL_PP(entry);
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zend_hash_move_forward(Z_ARRVAL_P(row));
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/* 2. Here comes the reason */
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zend_hash_get_current_data(Z_ARRVAL_P(row), (void **)&entry);
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w = php_new_warning(*entry, errno TSRMLS_CC);
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/*
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Don't destroy entry, because the row destroy will decrease
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the refcounter. Decreased twice then mysqlnd_free_result()
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will crash, because it will try to access already freed memory.
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*/
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if (!first) {
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first = w;
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}
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if (prev) {
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prev->next = (void *)w;
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}
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prev = w;
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zval_ptr_dtor(&row);
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}
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mysql_free_result(result);
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return first;
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}
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/* }}} */
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#endif
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/* {{{ bool mysqli_warning::next() */
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PHP_METHOD(mysqli_warning, next)
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{
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MYSQLI_WARNING *w;
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zval *mysqli_warning;
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mysqli_object *obj = (mysqli_object *)zend_objects_get_address(getThis() TSRMLS_CC);
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if (obj->ptr) {
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if (zend_parse_method_parameters(ZEND_NUM_ARGS() TSRMLS_CC, getThis(), "O",
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&mysqli_warning, mysqli_warning_class_entry) == FAILURE) {
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return;
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}
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MYSQLI_FETCH_RESOURCE(w, MYSQLI_WARNING *, &mysqli_warning, "mysqli_warning", MYSQLI_STATUS_VALID);
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if (w->next) {
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w = w->next;
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((MYSQLI_RESOURCE *)(obj->ptr))->ptr = w;
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RETURN_TRUE;
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}
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}
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RETURN_FALSE;
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}
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/* }}} */
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/* {{{ property mysqli_warning_message */
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static
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int mysqli_warning_message(mysqli_object *obj, zval **retval TSRMLS_DC)
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{
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MYSQLI_WARNING *w;
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if (!obj->ptr || !((MYSQLI_RESOURCE *)(obj->ptr))->ptr) {
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return FAILURE;
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}
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w = (MYSQLI_WARNING *)((MYSQLI_RESOURCE *)(obj->ptr))->ptr;
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MAKE_STD_ZVAL(*retval);
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**retval = w->reason;
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zval_copy_ctor(*retval);
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return SUCCESS;
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}
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/* }}} */
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/* {{{ property mysqli_warning_sqlstate */
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static
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int mysqli_warning_sqlstate(mysqli_object *obj, zval **retval TSRMLS_DC)
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{
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MYSQLI_WARNING *w;
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if (!obj->ptr || !((MYSQLI_RESOURCE *)(obj->ptr))->ptr) {
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return FAILURE;
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}
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w = (MYSQLI_WARNING *)((MYSQLI_RESOURCE *)(obj->ptr))->ptr;
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MAKE_STD_ZVAL(*retval);
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**retval = w->sqlstate;
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zval_copy_ctor(*retval);
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return SUCCESS;
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}
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/* }}} */
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/* {{{ property mysqli_warning_error */
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static
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int mysqli_warning_errno(mysqli_object *obj, zval **retval TSRMLS_DC)
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{
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MYSQLI_WARNING *w;
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if (!obj->ptr || !((MYSQLI_RESOURCE *)(obj->ptr))->ptr) {
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return FAILURE;
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}
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w = (MYSQLI_WARNING *)((MYSQLI_RESOURCE *)(obj->ptr))->ptr;
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MAKE_STD_ZVAL(*retval);
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ZVAL_LONG(*retval, w->errorno);
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return SUCCESS;
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}
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/* }}} */
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/* {{{ mysqli_warning_construct(object obj) */
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PHP_METHOD(mysqli_warning, __construct)
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{
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zval *z;
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mysqli_object *obj;
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MYSQL *hdl;
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MYSQLI_WARNING *w;
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MYSQLI_RESOURCE *mysqli_resource;
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if (ZEND_NUM_ARGS() != 1) {
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WRONG_PARAM_COUNT;
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}
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if (zend_parse_parameters(1 TSRMLS_CC, "o", &z)==FAILURE) {
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return;
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}
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obj = (mysqli_object *)zend_object_store_get_object(z TSRMLS_CC);\
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if (obj->zo.ce == mysqli_link_class_entry) {
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MY_MYSQL *mysql;
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MYSQLI_FETCH_RESOURCE_CONN(mysql, &z, MYSQLI_STATUS_VALID);
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hdl = mysql->mysql;
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} else if (obj->zo.ce == mysqli_stmt_class_entry) {
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MY_STMT *stmt;
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MYSQLI_FETCH_RESOURCE_STMT(stmt, &z, MYSQLI_STATUS_VALID);
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hdl = mysqli_stmt_get_connection(stmt->stmt);
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} else {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "invalid class argument");
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RETURN_FALSE;
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}
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if (mysql_warning_count(hdl)) {
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w = php_get_warnings(hdl TSRMLS_CC);
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} else {
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php_error_docref(NULL TSRMLS_CC, E_WARNING, "No warnings found");
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RETURN_FALSE;
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}
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mysqli_resource = (MYSQLI_RESOURCE *)ecalloc (1, sizeof(MYSQLI_RESOURCE));
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mysqli_resource->ptr = mysqli_resource->info = (void *)w;
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mysqli_resource->status = MYSQLI_STATUS_VALID;
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if (!getThis() || !instanceof_function(Z_OBJCE_P(getThis()), mysqli_warning_class_entry TSRMLS_CC)) {
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MYSQLI_RETURN_RESOURCE(mysqli_resource, mysqli_warning_class_entry);
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} else {
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((mysqli_object *) zend_object_store_get_object(getThis() TSRMLS_CC))->ptr = mysqli_resource;
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}
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}
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/* }}} */
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/* {{{ mysqli_warning_methods */
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const zend_function_entry mysqli_warning_methods[] = {
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PHP_ME(mysqli_warning, __construct, NULL, ZEND_ACC_PROTECTED)
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PHP_ME(mysqli_warning, next, NULL, ZEND_ACC_PUBLIC)
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{NULL, NULL, NULL}
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};
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/* }}} */
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/* {{{ mysqli_warning_property_entries */
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const mysqli_property_entry mysqli_warning_property_entries[] = {
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{"message", sizeof("message") - 1, mysqli_warning_message, NULL},
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{"sqlstate", sizeof("sqlstate") - 1, mysqli_warning_sqlstate, NULL},
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{"errno", sizeof("errno") - 1, mysqli_warning_errno, NULL},
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{NULL, 0, NULL, NULL}
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};
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/* }}} */
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/* {{{ mysqli_warning_property_info_entries */
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zend_property_info mysqli_warning_property_info_entries[] = {
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{ZEND_ACC_PUBLIC, "message", sizeof("message") - 1, 0, NULL, 0, NULL},
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{ZEND_ACC_PUBLIC, "sqlstate", sizeof("sqlstate") - 1, 0, NULL, 0, NULL},
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{ZEND_ACC_PUBLIC, "errno", sizeof("errno") - 1, 0, NULL, 0, NULL},
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{0, NULL, 0, 0, NULL, 0, NULL}
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};
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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: noet sw=4 ts=4 fdm=marker
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* vim<600: noet sw=4 ts=4
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*/
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