Adding multiple fuzzers for libbinder.
Adding fuzzers in libbinder for Binder, BpBinder, MemoryHeapBase, ParcelBlob, PersistableBundle, Stability, Status, and TextOutput. These follow the same framework style.
Test: Tested on a Pixel3a device for 500k iterations each.
Signed-off-by: Corbin Souffrant <corbin.souffrant@leviathansecurity.com>
Change-Id: I53b85570a3abde854b01ffefc2739b79b39af7e2
diff --git a/libs/binder/tests/fuzzers/StabilityFuzzFunctions.h b/libs/binder/tests/fuzzers/StabilityFuzzFunctions.h
new file mode 100644
index 0000000..8b4ed70
--- /dev/null
+++ b/libs/binder/tests/fuzzers/StabilityFuzzFunctions.h
@@ -0,0 +1,67 @@
+/*
+ * Copyright 2020 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#pragma once
+
+#include <binder/Binder.h>
+#include <binder/Stability.h>
+#include <fuzzer/FuzzedDataProvider.h>
+
+#define STABILITY_MAX_TAG_LENGTH 2048
+static bool marked = false;
+
+/* This is a vector of lambda functions the fuzzer will pull from.
+ * This is done so new functions can be added to the fuzzer easily
+ * without requiring modifications to the main fuzzer file. This also
+ * allows multiple fuzzers to include this file, if functionality is needed.
+ */
+static const std::vector<
+ std::function<void(FuzzedDataProvider*, android::sp<android::IBinder> const&)>>
+ gStabilityOperations = {
+ // markCompilationUnit(IBinder* binder)
+ [](FuzzedDataProvider*, android::sp<android::IBinder> const& bbinder) -> void {
+ if (!marked) {
+ android::internal::Stability::markCompilationUnit(bbinder.get());
+ marked = true;
+ }
+ },
+
+ // markVintf(IBinder* binder)
+ [](FuzzedDataProvider*, android::sp<android::IBinder> const& bbinder) -> void {
+ if (!marked) {
+ android::internal::Stability::markVintf(bbinder.get());
+ marked = true;
+ }
+ },
+
+ // debugLogStability(const std::string& tag, const sp<IBinder>& binder)
+ [](FuzzedDataProvider* fdp, android::sp<android::IBinder> const& bbinder) -> void {
+ std::string tag = fdp->ConsumeRandomLengthString(STABILITY_MAX_TAG_LENGTH);
+ android::internal::Stability::debugLogStability(tag, bbinder);
+ },
+
+ // markVndk(IBinder* binder)
+ [](FuzzedDataProvider*, android::sp<android::IBinder> const& bbinder) -> void {
+ if (!marked) {
+ android::internal::Stability::markVndk(bbinder.get());
+ marked = true;
+ }
+ },
+
+ // requiresVintfDeclaration(const sp<IBinder>& binder)
+ [](FuzzedDataProvider*, android::sp<android::IBinder> const& bbinder) -> void {
+ android::internal::Stability::requiresVintfDeclaration(bbinder);
+ }};