1 files changed, 115 insertions, 0 deletions
diff --git a/tools/fuzzing/interface/FuzzingInterface.h b/tools/fuzzing/interface/FuzzingInterface.h
new file mode 100644
index 0000000000..ad49ed3c01
--- /dev/null
+++ b/tools/fuzzing/interface/FuzzingInterface.h
@@ -0,0 +1,115 @@
+/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+/*
+ * Interface definitions for the unified fuzzing interface
+ */
+
+#ifndef FuzzingInterface_h__
+#define FuzzingInterface_h__
+
+#include <fstream>
+
+#ifdef LIBFUZZER
+#  include "FuzzerExtFunctions.h"
+#endif
+
+#include "FuzzerRegistry.h"
+#include "mozilla/Assertions.h"
+
+#ifndef JS_STANDALONE
+#  include "mozilla/Logging.h"
+#endif
+
+namespace mozilla {
+
+#ifdef JS_STANDALONE
+void fuzzing_log(const char* aFmt, ...);
+#  define MOZ_LOG_EXPAND_ARGS(...) __VA_ARGS__
+
+#  define FUZZING_LOG(args) fuzzing_log(MOZ_LOG_EXPAND_ARGS args);
+#else
+extern LazyLogModule gFuzzingLog;
+
+#  define FUZZING_LOG(args) \
+    MOZ_LOG(mozilla::gFuzzingLog, mozilla::LogLevel::Verbose, args)
+#endif  // JS_STANDALONE
+
+typedef int (*FuzzingTestFuncRaw)(const uint8_t*, size_t);
+
+#ifdef __AFL_COMPILER
+
+static int afl_interface_raw(const char* testFile,
+                             FuzzingTestFuncRaw testFunc) {
+  char* buf = NULL;
+
+  while (__AFL_LOOP(1000)) {
+    std::ifstream is;
+    is.open(testFile, std::ios::binary);
+    is.seekg(0, std::ios::end);
+    int len = is.tellg();
+    is.seekg(0, std::ios::beg);
+    MOZ_RELEASE_ASSERT(len >= 0);
+    if (!len) {
+      is.close();
+      continue;
+    }
+    buf = (char*)realloc(buf, len);
+    MOZ_RELEASE_ASSERT(buf);
+    is.read(buf, len);
+    is.close();
+    testFunc((uint8_t*)buf, (size_t)len);
+  }
+
+  free(buf);
+
+  return 0;
+}
+
+#  define MOZ_AFL_INTERFACE_COMMON()                                      \
+    char* testFilePtr = getenv("MOZ_FUZZ_TESTFILE");                      \
+    if (!testFilePtr) {                                                   \
+      fprintf(stderr,                                                     \
+              "Must specify testfile in MOZ_FUZZ_TESTFILE environment "   \
+              "variable.\n");                                             \
+      return 1;                                                           \
+    }                                                                     \
+    /* Make a copy of testFilePtr so the testing function can safely call \
+     * getenv                                                             \
+     */                                                                   \
+    std::string testFile(testFilePtr);
+
+#  define MOZ_AFL_INTERFACE_RAW(initFunc, testFunc, moduleName)          \
+    static int afl_fuzz_##moduleName(const uint8_t* data, size_t size) { \
+      MOZ_RELEASE_ASSERT(data == NULL && size == 0);                     \
+      MOZ_AFL_INTERFACE_COMMON();                                        \
+      return ::mozilla::afl_interface_raw(testFile.c_str(), testFunc);   \
+    }                                                                    \
+    static void __attribute__((constructor)) AFLRegister##moduleName() { \
+      ::mozilla::FuzzerRegistry::getInstance().registerModule(           \
+          #moduleName, initFunc, afl_fuzz_##moduleName);                 \
+    }
+#else
+#  define MOZ_AFL_INTERFACE_RAW(initFunc, testFunc, moduleName) /* Nothing */
+#endif  // __AFL_COMPILER
+
+#ifdef LIBFUZZER
+#  define MOZ_LIBFUZZER_INTERFACE_RAW(initFunc, testFunc, moduleName)          \
+    static void __attribute__((constructor)) LibFuzzerRegister##moduleName() { \
+      ::mozilla::FuzzerRegistry::getInstance().registerModule(                 \
+          #moduleName, initFunc, testFunc);                                    \
+    }
+#else
+#  define MOZ_LIBFUZZER_INTERFACE_RAW(initFunc, testFunc, \
+                                      moduleName) /* Nothing */
+#endif
+
+#define MOZ_FUZZING_INTERFACE_RAW(initFunc, testFunc, moduleName) \
+  MOZ_LIBFUZZER_INTERFACE_RAW(initFunc, testFunc, moduleName);    \
+  MOZ_AFL_INTERFACE_RAW(initFunc, testFunc, moduleName);
+
+}  // namespace mozilla
+
+#endif  // FuzzingInterface_h__