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|
/*
+----------------------------------------------------------------------+
| Copyright (c) The PHP Group |
+----------------------------------------------------------------------+
| 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. |
+----------------------------------------------------------------------+
*/
#include "fuzzer.h"
#include "Zend/zend.h"
#include "main/php_config.h"
#include "main/php_main.h"
#include <stdio.h>
#include <stdint.h>
#include <stdlib.h>
#include "fuzzer-sapi.h"
#include "ext/standard/php_var.h"
int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t FullSize) {
zend_execute_data execute_data;
zend_function func;
const uint8_t *Start = memchr(Data, '|', FullSize);
if (!Start) {
return 0;
}
++Start;
size_t Size = (Data + FullSize) - Start;
unsigned char *orig_data = malloc(Size+1);
memcpy(orig_data, Start, Size);
orig_data[Size] = '\0';
if (fuzzer_request_startup()==FAILURE) {
return 0;
}
/* Set up a dummy stack frame so that exceptions may be thrown. */
{
memset(&execute_data, 0, sizeof(zend_execute_data));
memset(&func, 0, sizeof(zend_function));
func.type = ZEND_INTERNAL_FUNCTION;
func.common.function_name = ZSTR_EMPTY_ALLOC();
execute_data.func = &func;
EG(current_execute_data) = &execute_data;
}
{
const unsigned char *data = orig_data;
zval result;
ZVAL_UNDEF(&result);
php_unserialize_data_t var_hash;
PHP_VAR_UNSERIALIZE_INIT(var_hash);
php_var_unserialize(&result, (const unsigned char **) &data, data + Size, &var_hash);
PHP_VAR_UNSERIALIZE_DESTROY(var_hash);
if (Z_TYPE(result) == IS_OBJECT
&& zend_string_equals_literal(Z_OBJCE(result)->name, "HashContext")) {
zval args[2];
ZVAL_COPY_VALUE(&args[0], &result);
ZVAL_STRINGL(&args[1], (char *) Data, (Start - Data) - 1);
fuzzer_call_php_func_zval("hash_update", 2, args);
zval_ptr_dtor(&args[1]);
fuzzer_call_php_func_zval("hash_final", 1, args);
}
zval_ptr_dtor(&result);
/* Destroy any thrown exception. */
if (EG(exception)) {
zend_object_release(EG(exception));
EG(exception) = NULL;
}
}
/* Unserialize may create circular structure. Make sure we free them.
* Two calls are performed to handle objects with destructors. */
zend_gc_collect_cycles();
zend_gc_collect_cycles();
php_request_shutdown(NULL);
free(orig_data);
return 0;
}
int LLVMFuzzerInitialize(int *argc, char ***argv) {
fuzzer_init_php();
/* fuzzer_shutdown_php(); */
return 0;
}
|
