fuzzer-unserialize.c

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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:           |
   | https://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.               |
   +----------------------------------------------------------------------+
   | Authors: Johannes Schlüter <johanes@php.net>                         |
   +----------------------------------------------------------------------+
 */
 
 
#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 Size) {
 
    if (fuzzer_request_startup() == FAILURE) {
        return 0;
    }
 
    unsigned char *orig_data = malloc(Size+1);
    memcpy(orig_data, Data, Size);
    orig_data[Size] = '\0';
 
    fuzzer_setup_dummy_frame();
 
    {
        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);
 
        zval_ptr_dtor(&result);
    }
 
    free(orig_data);
 
    fuzzer_request_shutdown();
    return 0;
}
 
int LLVMFuzzerInitialize(int *argc, char ***argv) {
    fuzzer_init_php(NULL);
 
    /* fuzzer_shutdown_php(); */
    return 0;
}