forked from sektioneins/suhosin
/
memory_limit.c
101 lines (89 loc) · 3.26 KB
/
memory_limit.c
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/*
+----------------------------------------------------------------------+
| Suhosin Version 1 |
+----------------------------------------------------------------------+
| Copyright (c) 2006-2007 The Hardened-PHP Project |
| Copyright (c) 2007-2014 SektionEins GmbH |
+----------------------------------------------------------------------+
| This source file is subject to version 3.01 of the PHP license, |
| that is bundled with this package in the file LICENSE, and is |
| available through the world-wide-web at the following url: |
| http://www.php.net/license/3_01.txt |
| If you did not receive a copy of the PHP license and are unable to |
| obtain it through the world-wide-web, please send a note to |
| license@php.net so we can mail you a copy immediately. |
+----------------------------------------------------------------------+
| Author: Stefan Esser <sesser@sektioneins.de> |
+----------------------------------------------------------------------+
*/
/*
$Id: memory_limit.c,v 1.1.1.1 2007-11-28 01:15:35 sesser Exp $
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include "php.h"
#include "php_ini.h"
#include "ext/standard/info.h"
#include "php_suhosin.h"
/* {{{ PHP_INI_MH
*/
static PHP_INI_MH(suhosin_OnChangeMemoryLimit)
{
#if SIZEOF_LONG==8
long hard_memory_limit = 0x7fffffffffffffff;
#elif SIZEOF_LONG==4
long hard_memory_limit = 0x7fffffff;
#endif /* will produce a compile error or SIZEOF_LONG is not 4 or 8 */
if (stage == ZEND_INI_STAGE_RUNTIME) {
if (SUHOSIN_G(memory_limit) > 0) {
SUHOSIN_G(hard_memory_limit) = SUHOSIN_G(memory_limit);
} else if (SUHOSIN_G(hard_memory_limit) == 0) {
SUHOSIN_G(hard_memory_limit) = PG(memory_limit);
}
hard_memory_limit = SUHOSIN_G(hard_memory_limit);
} else {
SUHOSIN_G(hard_memory_limit) = 0;
}
if (new_value) {
PG(memory_limit) = zend_atol(new_value, new_value_length);
if (hard_memory_limit > 0) {
if (PG(memory_limit) > hard_memory_limit) {
suhosin_log(S_MISC, "script tried to increase memory_limit to %lu bytes which is above the allowed value", PG(memory_limit));
if (!SUHOSIN_G(simulation)) {
PG(memory_limit) = hard_memory_limit;
return FAILURE;
}
} else if (PG(memory_limit) < 0) {
suhosin_log(S_MISC, "script tried to disable memory_limit by setting it to a negative value %ld bytes which is not allowed", PG(memory_limit));
if (!SUHOSIN_G(simulation)) {
PG(memory_limit) = hard_memory_limit;
return FAILURE;
}
}
}
} else {
PG(memory_limit) = hard_memory_limit;
}
return zend_set_memory_limit(PG(memory_limit));
}
/* }}} */
void suhosin_hook_memory_limit()
{
zend_ini_entry *ini_entry;
TSRMLS_FETCH();
/* check if we are compiled against memory_limit */
if (zend_hash_find(EG(ini_directives), "memory_limit", sizeof("memory_limit"), (void **) &ini_entry)==FAILURE) {
return;
}
/* replace OnUpdateMemoryLimit handler */
ini_entry->on_modify = suhosin_OnChangeMemoryLimit;
}
/*
* Local variables:
* tab-width: 4
* c-basic-offset: 4
* End:
* vim600: noet sw=4 ts=4 fdm=marker
* vim<600: noet sw=4 ts=4
*/