Add fuzz tests

CMakeLists.txt

@@ -6,6 +6,7 @@ option(BUILD_WITH_PROTO_REFLECTION "Build mavsdk_server with proto reflection" O
 option(BUILD_SHARED_LIBS "Build core as shared libraries instead of static ones" ON)
 option(MAVLINK_DIALECT "MAVLink dialect. Default: common" "common")
 option(BUILD_TESTING "Build tests" ON)
+option(BUILD_FUZZ_TESTS "Build fuzz tests with libfuzzer" OFF)
 option(BUILD_WITHOUT_CURL "Build without CURL" OFF)
 
 message("Using cmake version: ${CMAKE_VERSION}")

src/CMakeLists.txt

@@ -85,6 +85,10 @@ if(BUILD_TESTING)
     add_subdirectory(system_tests)
 endif()
 
+if(BUILD_FUZZ_TESTS)
+    add_subdirectory(fuzz_tests)
+endif()
+
 if (BUILD_MAVSDK_SERVER)
     message(STATUS "Building mavsdk server")
     add_subdirectory(mavsdk_server)

src/fuzz_tests/CMakeLists.txt

@@ -0,0 +1,50 @@
+# Check if fuzzing is enabled and compiler supports libfuzzer
+if(NOT BUILD_FUZZ_TESTS)
+    return()
+endif()
+
+# Check if we're using Clang (required for libfuzzer)
+if(NOT CMAKE_CXX_COMPILER_ID STREQUAL "Clang")
+    message(WARNING "Fuzz tests require Clang compiler. Skipping fuzz tests.")
+    return()
+endif()
+
+# Create the UDP fuzzer executable
+add_executable(udp_fuzzer
+    udp_fuzzer.cpp
+)
+
+# Set fuzzer-specific compiler and linker flags
+target_compile_options(udp_fuzzer PRIVATE
+    -fsanitize=fuzzer,address
+    -g
+    -O1
+)
+
+target_link_options(udp_fuzzer PRIVATE
+    -fsanitize=fuzzer,address
+)
+
+# Link against MAVSDK
+target_link_libraries(udp_fuzzer
+    mavsdk
+)
+
+# Include MAVSDK headers
+target_include_directories(udp_fuzzer PRIVATE
+    ${PROJECT_SOURCE_DIR}/mavsdk/core/include
+    ${PROJECT_SOURCE_DIR}/mavsdk/core
+)
+
+# Add custom target for running the fuzzer
+add_custom_target(run_udp_fuzzer
+    COMMAND ${CMAKE_CURRENT_BINARY_DIR}/udp_fuzzer -max_total_time=60 -print_final_stats=1
+    DEPENDS udp_fuzzer
+    WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
+    COMMENT "Running UDP fuzzer for 60 seconds"
+)
+
+# Print instructions
+message(STATUS "Fuzz tests enabled. Build target 'udp_fuzzer' to create fuzzer executable.")
+message(STATUS "Run 'make run_udp_fuzzer' to execute fuzzing for 60 seconds.")
+message(STATUS "Or run manually: ./udp_fuzzer -help for options")