Add fuzzing targets (#23)

* Add fuzzing targets Signed-off-by: Bogdan Vaneev <[email protected]> * Add init to fuzz sign Signed-off-by: Bogdan Vaneev <[email protected]>
hyperledger-iroha · Mar 11, 2019 · 3a3b188 · 3a3b188
1 parent cba1c6e
commit 3a3b188
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Showing 5 changed files with 90 additions and 6 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -40,6 +40,7 @@ set(CMAKE_CXX_EXTENSIONS OFF)
 option(TESTING "Enable testing" OFF)
 option(COVERAGE "Enable coverage" OFF)
 option(BENCHMARKING "Enable benchmarking" OFF)
+option(FUZZING "Enable fuzzing targets" OFF)
 
 include_directories(
   ${CMAKE_BINARY_DIR}/
@@ -54,6 +55,7 @@ include(cmake/ed25519_target_link_libraries.cmake)
 include(cmake/ed25519_add_library.cmake)
 include(cmake/ed25519_merge_libraries.cmake)
 include(cmake/ed25519_add_test.cmake)
+include(cmake/ed25519_add_fuzz.cmake)
 include(cmake/ed25519_select_supported_impl.cmake)
 test_build_amd64(CAN_BUILD_AMD64)
 
@@ -159,3 +161,8 @@ endif ()
 if (BENCHMARK)
   add_subdirectory(benchmark)
 endif ()
+
+
+if (FUZZING)
+  add_subdirectory(fuzzing)
+endif ()
diff --git a/cmake/ed25519_add_fuzz.cmake b/cmake/ed25519_add_fuzz.cmake
@@ -0,0 +1,8 @@
+function(ed25519_add_fuzz fuzz_name)
+  add_executable(${fuzz_name} ${ARGN})
+  set_target_properties(${fuzz_name} PROPERTIES
+    RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/fuzz_bin
+    ARCHIVE_OUTPUT_PATH      ${CMAKE_BINARY_DIR}/fuzz_lib
+    LIBRARY_OUTPUT_PATH      ${CMAKE_BINARY_DIR}/fuzz_lib
+    )
+endfunction()
diff --git a/fuzzing/CMakeLists.txt b/fuzzing/CMakeLists.txt
@@ -0,0 +1,43 @@
+# Copyright Soramitsu Co., Ltd. All Rights Reserved.
+# SPDX-License-Identifier: Apache-2.0
+
+set(compiler  "clang-7")
+set(flags     "-g -O1")
+set(options   "-fsanitize=fuzzer,undefined")
+
+set(CMAKE_C_COMPILER    ${compiler})
+set(CMAKE_CXX_COMPILER  ${compiler})
+set(CMAKE_C_FLAGS       ${flags})
+set(CMAKE_CXX_FLAGS     ${flags})
+
+add_compile_options(${options})
+add_link_options(${options})
+
+
+set(_random ${RANDOM})
+foreach(_edimpl ${ED25519_SUPPORTED_LIBRARIES_EDIMPL})
+  foreach(_hash ${ED25519_SUPPORTED_LIBRARIES_HASH})
+    foreach(_build STATIC SHARED)
+
+      set(_target ${_edimpl}-${_hash}-${_random}-${_build})
+
+      if(NOT TARGET ${edtarget})
+        ed25519_merge_libraries(fuzz-ed25519-${_target} ${_build}
+          LIBRARIES
+          ${_edimpl}
+          ${_hash}
+          ${_random}
+          )
+      endif()
+
+
+      ed25519_add_fuzz(fuzz-sign-${_target}
+        fuzz_sign.cc
+        )
+      ed25519_target_link_libraries(fuzz-sign-${_target}
+        fuzz-ed25519-${_target}
+        )
+
+    endforeach()
+  endforeach()
+endforeach()
diff --git a/fuzzing/fuzz_sign.cc b/fuzzing/fuzz_sign.cc
@@ -0,0 +1,22 @@
+/**
+ * Copyright Soramitsu Co., Ltd. All Rights Reserved.
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#include <stdlib.h>
+#include <stdint.h>
+#include <ed25519/ed25519.h>
+
+static public_key_t pub;
+static private_key_t priv;
+static signature_t sig;
+
+extern "C" int LLVMFuzzerInitialize(int argc, char** argv){
+  ed25519_create_keypair(&priv, &pub);
+  return 0;
+}
+
+extern "C" int LLVMFuzzerTestOneInput(const uint8_t *Data, size_t Size) {
+  ed25519_sign(&sig, Data, Size, &pub, &priv);
+  return 0;  // Non-zero return values are reserved for future use.
+}
diff --git a/test/ed25519/CMakeLists.txt b/test/ed25519/CMakeLists.txt
@@ -4,12 +4,16 @@ foreach(_edimpl ${ED25519_SUPPORTED_LIBRARIES_EDIMPL})
     foreach(_build STATIC SHARED)
 
       set(_target ${_edimpl}-${_hash}-${_random}-${_build})
-      ed25519_merge_libraries(ed25519-${_target} ${_build}
-        LIBRARIES
-          ${_edimpl}
-          ${_hash}
-          ${_random}
-        )
+
+      if(NOT TARGET ed25519-${_target})
+        ed25519_merge_libraries(ed25519-${_target} ${_build}
+          LIBRARIES
+            ${_edimpl}
+            ${_hash}
+            ${_random}
+          )
+      endif()
+
       ed25519_add_test(test-${_target}
         ed25519_test.cpp
         )