libbinder fuzzer: read flattenable
Bug: 131861045
Test: binder_parcel_fuzzer (for a few minutes)
Change-Id: Ic5657e0e0a4da7ab9cf6080a1912941c15c59a5c
diff --git a/libs/binder/fuzzer/binder.cpp b/libs/binder/fuzzer/binder.cpp
index 1aabfe6..f678f4c 100644
--- a/libs/binder/fuzzer/binder.cpp
+++ b/libs/binder/fuzzer/binder.cpp
@@ -37,6 +37,29 @@
int64_t mExampleUsedData = 0;
};
+struct ExampleFlattenable : public android::Flattenable<ExampleFlattenable> {
+public:
+ size_t getFlattenedSize() const { return sizeof(mValue); }
+ size_t getFdCount() const { return 0; }
+ status_t flatten(void*& /*buffer*/, size_t& /*size*/, int*& /*fds*/, size_t& /*count*/) const {
+ FUZZ_LOG() << "should not reach";
+ abort();
+ }
+ status_t unflatten(void const*& buffer, size_t& size, int const*& /*fds*/, size_t& /*count*/) {
+ if (size < sizeof(mValue)) {
+ return android::NO_MEMORY;
+ }
+ android::FlattenableUtils::read(buffer, size, mValue);
+ return android::OK;
+ }
+private:
+ int32_t mValue = 0xFEEDBEEF;
+};
+
+struct ExampleLightFlattenable : public android::LightFlattenablePod<ExampleLightFlattenable> {
+ int32_t mValue = 0;
+};
+
#define PARCEL_READ_WITH_STATUS(T, FUN) \
[] (const ::android::Parcel& p, uint8_t /*data*/) {\
FUZZ_LOG() << "about to read " #T " using " #FUN " with status";\
@@ -173,8 +196,18 @@
// PARCEL_READ_WITH_STATUS(std::unique_ptr<std::vector<std::unique_ptr<std::string>>>, readUtf8VectorFromUtf16Vector),
// PARCEL_READ_WITH_STATUS(std::vector<std::string>, readUtf8VectorFromUtf16Vector),
- // TODO: read(Flattenable<T>)
- // TODO: read(LightFlattenable<T>)
+ [] (const android::Parcel& p, uint8_t /*len*/) {
+ FUZZ_LOG() << "about to read flattenable";
+ ExampleFlattenable f;
+ status_t status = p.read(f);
+ FUZZ_LOG() << "read flattenable: " << status;
+ },
+ [] (const android::Parcel& p, uint8_t /*len*/) {
+ FUZZ_LOG() << "about to read lite flattenable";
+ ExampleLightFlattenable f;
+ status_t status = p.read(f);
+ FUZZ_LOG() << "read lite flattenable: " << status;
+ },
// TODO(b/131868573): can force read of arbitrarily sized vector
// TODO: resizeOutVector