(#8578) add 'libprotobuf-mutator' recipe

* init libprotobuf-mutator

* validate cppstd

* allow only 'clang'

* check libcxx

* allow only 'libstdc++11'

* patch before build

* little improvements

* Update recipes/libprotobuf-mutator/all/test_package/CMakeLists.txt

Co-authored-by: Uilian Ries <uilianries@gmail.com>

Co-authored-by: Uilian Ries <uilianries@gmail.com>

recipes/libprotobuf-mutator/all/CMakeLists.txt

@@ -0,0 +1,13 @@
+cmake_minimum_required(VERSION 2.8.11)
+project(cmake_wrapper)
+
+include(conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_subdirectory(source_subfolder)
+
+if(MSVC)
+  # Should be added because of
+  # https://docs.microsoft.com/en-us/windows/win32/api/synchapi/nf-synchapi-initonceexecuteonce
+  add_definitions(-D_WIN32_WINNT=0x0600)
+endif()

recipes/libprotobuf-mutator/all/conandata.yml

@@ -0,0 +1,4 @@
+sources:
+  "cci.20210831":
+    url: "https://github.com/google/libprotobuf-mutator/archive/ffd86a32874e5c08a143019aad1aaf0907294c9f.zip"
+    sha256: "14f595863452808483776ce1964209db00cdac79e649b31eb4d4b06ca72912d8"

recipes/libprotobuf-mutator/all/conanfile.py

@@ -0,0 +1,88 @@
+from conans import ConanFile, CMake, tools
+from conans.errors import ConanInvalidConfiguration
+import os
+
+required_conan_version = ">=1.33.0"
+
+
+class LibProtobufMutatorConan(ConanFile):
+    name = "libprotobuf-mutator"
+    license = "Apache-2.0"
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://github.com/google/libprotobuf-mutator"
+    description = "A library to randomly mutate protobuffers."
+    topics = ("test", "fuzzing", "protobuf")
+    settings = "os", "compiler", "build_type", "arch"
+    generators = "cmake"
+    exports_sources = ["CMakeLists.txt"]
+
+    _cmake = None
+
+    @property
+    def _source_subfolder(self):
+        return "source_subfolder"
+
+    @property
+    def _build_subfolder(self):
+        return "build_subfolder"
+
+    def requirements(self):
+        self.requires("protobuf/3.17.1")
+
+    def source(self):
+        tools.get(**self.conan_data["sources"][self.version],
+                  destination=self._source_subfolder, strip_root=True)
+
+    def validate(self):
+        if self.settings.compiler != "clang":
+            raise ConanInvalidConfiguration("Only clang allowed")
+        if self.settings.compiler.libcxx != "libstdc++11":
+            raise ConanInvalidConfiguration("Requires either compiler.libcxx=libstdc++11")
+        if self.settings.compiler.cppstd:
+            tools.check_min_cppstd(self, 11)
+
+    def _patch_sources(self):
+        tools.replace_in_file(
+            os.path.join(self._source_subfolder, 'CMakeLists.txt'),
+            """include_directories(${PROTOBUF_INCLUDE_DIRS})""",
+            """include_directories(${protobuf_INCLUDE_DIRS})""")
+        tools.replace_in_file(
+            os.path.join(self._source_subfolder, 'CMakeLists.txt'),
+            """set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/external)""",
+            """# (disabled by conan) set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/cmake/external)""")
+        tools.replace_in_file(
+            os.path.join(self._source_subfolder, 'CMakeLists.txt'),
+            """add_subdirectory(examples EXCLUDE_FROM_ALL)""",
+            """# (disabled by conan) add_subdirectory(examples EXCLUDE_FROM_ALL)""")
+
+    def _configure_cmake(self):
+        if self._cmake:
+            return self._cmake
+
+        self._cmake = CMake(self)
+        self._cmake.definitions["LIB_PROTO_MUTATOR_TESTING"] = "OFF"
+        self._cmake.definitions["LIB_PROTO_MUTATOR_DOWNLOAD_PROTOBUF"] = "OFF"
+        self._cmake.definitions["LIB_PROTO_MUTATOR_WITH_ASAN"] = "OFF"
+        self._cmake.definitions["LIB_PROTO_MUTATOR_FUZZER_LIBRARIES"] = ""
+        # todo: check option(LIB_PROTO_MUTATOR_MSVC_STATIC_RUNTIME "Link static runtime libraries" ON)
+        self._cmake.configure(build_folder=self._build_subfolder)
+        return self._cmake
+
+    def build(self):
+        self._patch_sources()
+        cmake = self._configure_cmake()
+        cmake.build()
+
+    def package(self):
+        self.copy(pattern="LICENSE", dst="licenses", src=self._source_subfolder)
+        cmake = self._configure_cmake()
+        cmake.install()
+        tools.rmdir(os.path.join(self.package_folder, "OFF"))
+        tools.rmdir(os.path.join(self.package_folder, "lib", "cmake"))
+
+    def package_info(self):
+        self.cpp_info.names["cmake_find_package"] = "libprotobuf-mutator"
+        self.cpp_info.names["cmake_find_package_multi"] = "libprotobuf-mutator"
+
+        self.cpp_info.libs = ['protobuf-mutator-libfuzzer', 'protobuf-mutator']
+        self.cpp_info.includedirs.append(os.path.join("include", "libprotobuf-mutator"))

recipes/libprotobuf-mutator/all/test_package/CMakeLists.txt

@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.1)
+project(test_package CXX)
+
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup(TARGETS)
+find_package(libprotobuf-mutator REQUIRED CONFIG)
+
+
+protobuf_generate_cpp(
+    MSG_PROTO_SRCS
+    MSG_PROTO_HDRS
+    msg.proto
+)
+
+
+add_executable(${PROJECT_NAME} ${MSG_PROTO_SRCS} test_package.cpp)
+target_include_directories(${PROJECT_NAME} PRIVATE ${CMAKE_CURRENT_BINARY_DIR})
+target_link_libraries(${PROJECT_NAME} libprotobuf-mutator::libprotobuf-mutator)

recipes/libprotobuf-mutator/all/test_package/conanfile.py

@@ -0,0 +1,17 @@
+from conans import ConanFile, CMake, tools
+import os
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "arch", "compiler", "build_type"
+    generators = "cmake", "cmake_find_package_multi"
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if not tools.cross_building(self):
+            bin_path = os.path.join("bin", "test_package")
+            self.run(bin_path, run_environment=True)

recipes/libprotobuf-mutator/all/test_package/msg.proto

@@ -0,0 +1,11 @@
+syntax = "proto2";
+package libfuzzer_example;
+
+import "google/protobuf/any.proto";
+
+message Msg {
+  optional float optional_float = 1;
+  optional uint64 optional_uint64 = 2;
+  optional string optional_string = 3;
+  optional google.protobuf.Any any = 4;
+}

recipes/libprotobuf-mutator/all/test_package/test_package.cpp

@@ -0,0 +1,23 @@
+#include <cmath>
+#include <iostream>
+
+#include "msg.pb.h"
+#include <libprotobuf-mutator/src/libfuzzer/libfuzzer_macro.h>
+
+DEFINE_PROTO_FUZZER(const libfuzzer_example::Msg& message) {
+  protobuf_mutator::protobuf::FileDescriptorProto file;
+
+  // Emulate a bug.
+  if (message.optional_uint64() == std::hash<std::string>{}(message.optional_string()) &&
+      message.optional_string() == "abcdefghijklmnopqrstuvwxyz" &&
+      !std::isnan(message.optional_float()) &&
+      std::fabs(message.optional_float()) > 1000 &&
+      message.any().UnpackTo(&file) && !file.name().empty())
+  {
+    std::cerr << message.DebugString() << "\n";
+  }
+}
+
+int main() {
+    return 0;
+}

recipes/libprotobuf-mutator/config.yml

@@ -0,0 +1,3 @@
+versions:
+  "cci.20210831":
+    folder: all