(#4434) Add libsafec/3.6.0

* Add safeclib/3.6.0

* Use tools.remove_files_by_mask

* Use libsafec for alignment with existing distribution packages

* Fail test_package if not working constraint handler

* Fix licenses

* Remove "make check" due to build complaints for test sources

* Strip too explicit version from resulting library file name

* Limit recipe GCC version to >= 5

* Update recipes/libsafec/all/conanfile.py

Co-authored-by: Chris Mc <prince.chrismc@gmail.com>

* Disable Werror to allow warnings

* Avoid extra patching, use version in the library name

* Fix exported includedirs to match original pkg-config package

* Update recipes/libsafec/all/test_package/conanfile.py

Co-authored-by: Yoann Potinet <intelligide@hotmail.fr>

* Update recipes/libsafec/all/conanfile.py

Co-authored-by: Anonymous Maarten <madebr@users.noreply.github.com>

* Fix includedirs.append

* Isolate autotools.configure for better --keep-build support

* Add explicit name for pkg_config

* Minor name fix

* Keep autoreconf in build method

* Enforce standard compatibility for exported include path

* Revert "Enforce standard compatibility for exported include path"

This reverts commit dfda98c.

* Disable build for apply-clang with libc++

* Revert "Disable build for apply-clang with libc++"

This reverts commit b65111d.

* Update recipes/libsafec/all/conanfile.py

Co-authored-by: SpaceIm <30052553+SpaceIm@users.noreply.github.com>

Co-authored-by: Chris Mc <prince.chrismc@gmail.com>
Co-authored-by: Yoann Potinet <intelligide@hotmail.fr>
Co-authored-by: Anonymous Maarten <madebr@users.noreply.github.com>
Co-authored-by: SpaceIm <30052553+SpaceIm@users.noreply.github.com>

recipes/libsafec/all/conandata.yml

@@ -0,0 +1,4 @@
+sources:
+  "3.6.0":
+    url: "https://github.com/rurban/safeclib/archive/v3.6.tar.gz"
+    sha256: "bd99d4555030719a83807649b3749bc483143b3548278daaa0a4af0fed5dc4de"

recipes/libsafec/all/conanfile.py

@@ -0,0 +1,95 @@
+import glob
+import os
+
+from conans import AutoToolsBuildEnvironment, ConanFile, tools
+from conans.errors import ConanInvalidConfiguration
+
+required_conan_version = ">=1.29.1"
+
+
+class LibSafeCConan(ConanFile):
+    name = "libsafec"
+    description = "This library implements the secure C11 Annex K[^5] functions" \
+            " on top of most libc implementations, which are missing from them."
+    url = "https://github.com/conan-io/conan-center-index"
+    homepage = "https://github.com/rurban/safeclib"
+    license = "MIT"
+    topics = ("conan", "safec", "libc")
+
+    settings = "os", "arch", "compiler", "build_type"
+    options = {"shared": [True, False], "fPIC": [True, False]}
+    default_options = {"shared": False, "fPIC": True}
+
+    build_requires = "autoconf/2.69", "libtool/2.4.6"
+    exports_sources = "patches/*"
+
+    __autotools = None
+    _source_subfolder = "source_subfolder"
+
+    def config_options(self):
+        if self.settings.os == "Windows":
+            del self.options.fPIC
+
+    @property
+    def _supported_compiler(self):
+        compiler = self.settings.compiler
+        version = tools.Version(self.settings.compiler.version)
+        if compiler == "Visual Studio":
+            return False
+        if compiler == "gcc" and version < "5":
+            return False
+        return True
+
+    def configure(self):
+        if not self._supported_compiler:
+            raise ConanInvalidConfiguration(
+                "libsafec doesn't support {}/{}".format(
+                    self.settings.compiler, self.settings.compiler.version))
+        if self.options.shared:
+            del self.options.fPIC
+        del self.settings.compiler.libcxx
+        del self.settings.compiler.cppstd
+
+    def source(self):
+        tools.get(**self.conan_data["sources"][self.version])
+        extracted_dir = glob.glob("safeclib-*")[0]
+        os.rename(extracted_dir, self._source_subfolder)
+
+    @property
+    def _autotools(self):
+        if self.__autotools is None:
+            self.__autotools = AutoToolsBuildEnvironment(self)
+        return self.__autotools
+
+    def _autotools_configure(self):
+        if self.options.shared:
+            args = ["--enable-shared", "--disable-static"]
+        else:
+            args = ["--disable-shared", "--enable-static"]
+        args.extend(["--disable-doc", "--disable-Werror"])
+        if self.settings.build_type in ("Debug", "RelWithDebInfo"):
+            args.append("--enable-debug")
+        self._autotools.configure(args=args)
+
+    def build(self):
+        with tools.chdir(self._source_subfolder):
+            self.run("autoreconf -fiv", run_environment=True)
+            self._autotools_configure()
+            self._autotools.make()
+
+    def package(self):
+        with tools.chdir(self._source_subfolder):
+            self._autotools.install()
+        self.copy("COPYING", src=self._source_subfolder, dst="licenses")
+        with tools.chdir(os.path.join(self.package_folder, "lib")):
+            tools.rmdir("pkgconfig")
+            tools.remove_files_by_mask(".", "*.la")
+
+    def package_info(self):
+        self.cpp_info.includedirs.append(os.path.join("include", "libsafec"))
+        self.cpp_info.libs = ["safec-{}".format(self.version)]
+        self.cpp_info.names["pkg_config"] = "libsafec"
+
+        bin_dir = os.path.join(self.package_folder, "bin")
+        self.output.info("Appending PATH environment variable: {}".format(bin_dir))
+        self.env_info.PATH.append(bin_dir)

recipes/libsafec/all/test_package/CMakeLists.txt

@@ -0,0 +1,8 @@
+cmake_minimum_required(VERSION 3.1)
+project(test_package C)
+
+include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
+conan_basic_setup()
+
+add_executable(test_package test_package.c)
+target_link_libraries(test_package ${CONAN_LIBS})

recipes/libsafec/all/test_package/conanfile.py

@@ -0,0 +1,18 @@
+import os
+
+from conans import CMake, ConanFile, tools
+
+
+class TestPackageConan(ConanFile):
+    settings = "os", "compiler", "build_type", "arch"
+    generators = "cmake"
+
+    def build(self):
+        cmake = CMake(self)
+        cmake.configure()
+        cmake.build()
+
+    def test(self):
+        if not tools.cross_building(self.settings):
+            bin_path = os.path.join("bin", "test_package")
+            self.run(bin_path, run_environment=True)

recipes/libsafec/all/test_package/test_package.c

@@ -0,0 +1,23 @@
+#include <safe_str_lib.h>
+#include <stdlib.h>
+
+void
+constraint_handler(const char* msg, void* ptr, errno_t error)
+{
+    printf("Constraint handler: %s\n", msg);
+    printf("Success!\n");
+    exit(0);
+}
+
+int
+main(int argc, char** argv)
+{
+    char dst[2];
+
+    set_str_constraint_handler_s(constraint_handler);
+
+    strcpy_s(dst, sizeof dst, "Too long!");
+    printf("Fail!\n");
+
+    return 1;
+}

recipes/libsafec/config.yml

@@ -0,0 +1,3 @@
+versions:
+  "3.6.0":
+    folder: all