Add second batch of fuzzers for libutils
This adds fuzzers for:
- CallStack
- Looper
- LruCache
- Printer
- ProcessCallStack
- PropertyMap
- RWLock
- RefBase
- StopWatch.
Test: Ran each fuzzer for 10 minutes. Rough coverage est. (likely far below actual value): 10.97%
Signed-off-by: Dylan Katz <dylan.katz@leviathansecurity.com>
Change-Id: I2f9f35c18b13338c282fb7f9c3ea4099ecb2c56f
diff --git a/libutils/Printer_fuzz.cpp b/libutils/Printer_fuzz.cpp
new file mode 100755
index 0000000..0180d41
--- /dev/null
+++ b/libutils/Printer_fuzz.cpp
@@ -0,0 +1,52 @@
+/*
+ * 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.
+ */
+
+#include "android-base/file.h"
+#include "android/log.h"
+#include "fuzzer/FuzzedDataProvider.h"
+#include "utils/Printer.h"
+#include "utils/String8.h"
+static constexpr int MAX_STR_SIZE = 1000;
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size) {
+ FuzzedDataProvider dataProvider(data, size);
+ android::String8 outStr = android::String8();
+ // Line indent/formatting
+ uint indent = dataProvider.ConsumeIntegral<uint>();
+ std::string prefix = dataProvider.ConsumeRandomLengthString(MAX_STR_SIZE);
+ std::string line = dataProvider.ConsumeRandomLengthString(MAX_STR_SIZE);
+
+ // Misc properties
+ std::string logTag = dataProvider.ConsumeRandomLengthString(MAX_STR_SIZE);
+ android_LogPriority priority =
+ static_cast<android_LogPriority>(dataProvider.ConsumeIntegral<int>());
+ bool ignoreBlankLines = dataProvider.ConsumeBool();
+
+ TemporaryFile tf;
+ android::FdPrinter filePrinter = android::FdPrinter(tf.fd, indent, prefix.c_str());
+ android::String8Printer stringPrinter = android::String8Printer(&outStr);
+ android::PrefixPrinter printer = android::PrefixPrinter(stringPrinter, prefix.c_str());
+ android::LogPrinter logPrinter =
+ android::LogPrinter(logTag.c_str(), priority, prefix.c_str(), ignoreBlankLines);
+
+ printer.printLine(line.c_str());
+ printer.printFormatLine("%s", line.c_str());
+ logPrinter.printLine(line.c_str());
+ logPrinter.printFormatLine("%s", line.c_str());
+ filePrinter.printLine(line.c_str());
+ filePrinter.printFormatLine("%s", line.c_str());
+ return 0;
+}