1 files changed, 52 insertions, 0 deletions
diff --git a/standalone_fuzz_target_runner.cc b/standalone_fuzz_target_runner.cc
new file mode 100644
index 0000000..0ca9106
--- /dev/null
+++ b/standalone_fuzz_target_runner.cc
@@ -0,0 +1,52 @@
+#include <cstdint>
+#include <fstream>
+#include <iostream>
+#include <stdexcept>
+#include <sys/stat.h>
+#include <vector>
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t* data, size_t size);
+extern "C" __attribute__((weak)) int LLVMFuzzerInitialize(int* argc, char*** argv);
+
+int main(int argc, char** argv)
+{
+  std::cerr<<"StandaloneFuzzTargetMain: running "<<(argc-1)<<" inputs"<<std::endl;
+
+  if (LLVMFuzzerInitialize) {
+    LLVMFuzzerInitialize(&argc, &argv);
+  }
+
+  for (int i = 1; i < argc; i++) {
+
+    struct stat st;
+    if (stat(argv[i], &st) || !S_ISREG(st.st_mode)) {
+      std::cerr<<"Skipping non-regular file: "<<std::string(argv[i])<<std::endl;
+      continue;
+    }
+
+    std::cerr<<"Running: "<<std::string(argv[i])<<std::endl;
+
+    std::ifstream file(argv[i], std::ios::binary);
+    file.seekg(0, std::ios::end);
+    size_t fileSize = file.tellg();
+    file.seekg(0, std::ios::beg);
+
+    std::vector<char> buffer;
+    buffer.resize(fileSize);
+
+    file.read(reinterpret_cast<char*>(buffer.data()), fileSize);
+
+    if (file.fail()) {
+      file.close();
+      throw std::runtime_error("Error reading fuzzing input from file '" + std::string(argv[i]) + '"');
+    }
+
+    file.close();
+
+    LLVMFuzzerTestOneInput(reinterpret_cast<const uint8_t*>(buffer.data()), fileSize);
+
+    std::cerr<<"Done: '"<<std::string(argv[i])<<"': ("<<fileSize<<" bytes)"<<std::endl;
+  }
+
+  return 0;
+}