1 files changed, 82 insertions, 0 deletions
diff --git a/sapi/fuzzer/fuzzer-unserializehash.c b/sapi/fuzzer/fuzzer-unserializehash.c
new file mode 100644
index 0000000000..c1231c4992
--- /dev/null
+++ b/sapi/fuzzer/fuzzer-unserializehash.c
@@ -0,0 +1,82 @@
+/*
+   +----------------------------------------------------------------------+
+   | 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) {
+	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;
+	}
+
+	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);
+
+		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);
+	}
+
+	free(orig_data);
+
+	fuzzer_request_shutdown();
+	return 0;
+}
+
+int LLVMFuzzerInitialize(int *argc, char ***argv) {
+	fuzzer_init_php();
+
+	/* fuzzer_shutdown_php(); */
+	return 0;
+}