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7acd3dd394194022907842ff385d7b5a29a311d4
emulator/CMakeModules/openssl_build.cmake
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cheezwiz7899 7acd3dd394 crypto: remove mbedtls, unify AES on OpenSSL + intrinsics 
Replace mbedtls entirely with OpenSSL as the single crypto dependency.
All AES-128/256 operations now dispatch through aes_ni.h at runtime:
VAES-512 → VAES-256 → SSE4 → OpenSSL EVP fallback, selected by CPUID
at first call with no global ISA flags required.

The OpenSSL fallback path in Ctr128 fires only on hardware without
AES-NI; on any x86-64 built after 2011 the intrinsic paths are taken
exclusively. All paths produce byte-identical output, verified against
NIST SP 800-38A (CTR) and SP 800-38B (CMAC) test vectors.

Changes:
- aes_ni.h: new four-tier CTR dispatch with CPUID detection via <cpuid.h>;
  VAES-512/256 paths for Zen 4 / Sapphire Rapids (~19 GB/s) and
  Zen 3+ / Tiger Lake+ (~15 GB/s)
- aes_util.cpp: CipherContext stores raw_key[16] for the OpenSSL fallback
- key_manager.cpp: CMAC → intrinsics, SHA-256 → EVP_Digest, bignum → BN_*
- amiibo_crypto.cpp/h: AES-CTR → intrinsics, HMAC → EVP_MAC
- xts_archive.cpp, registered_cache.cpp, nca.cpp, ro.cpp,
  delivery_cache_directory_service.cpp: SHA-256/MD5 → EVP_Digest
- citron_room.cpp: base64 → EVP_EncodeBlock/EVP_DecodeBlock
- verify_user_jwt.cpp: RS256 verification → EVP_DigestVerify*
- web_service CMakeLists: drop cpp-jwt, link OpenSSL::Crypto
- dependencies.cmake: remove mbedtls and cpp-jwt CPM blocks
- externals CMakeLists: remove add_subdirectory(mbedtls)
- openssl_build.cmake: require NASM; remove no-asm
2026-06-11 05:37:48 +10:00

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# SPDX-FileCopyrightText: 2026 citron Emulator Project
# SPDX-License-Identifier: GPL-2.0-or-later
#
# CMakeModules/openssl_build.cmake — Build OpenSSL from source for cross-compilation
#
# OpenSSL uses Perl/Configure, not CMake. This module downloads the source via
# CPM and builds it with execute_process during cmake configure.
#
# Native MSYS2 builds also prefer the downloaded source build so behavior
# stays consistent across Windows and Linux-to-Windows cross builds.
# CMakeModules/openssl_build.cmake — Build OpenSSL from source
#
# Builds a static OpenSSL for any target: Windows PE (mingw64) via native
# MSYS2 or Linux-to-Windows cross-compile, or Linux ELF for native builds.
# OpenSSL uses Perl/Configure, not CMake; this module drives it with
# execute_process during cmake configure.
set(_OPENSSL_VERSION "3.4.1")
set(_OPENSSL_INSTALL "${CMAKE_BINARY_DIR}/externals/openssl-install")
# OpenSSL's Perl Configure script cannot handle spaces in the working directory
# or source path (same limitation as FFmpeg's configure). When CMAKE_BINARY_DIR
# contains a space (e.g. a username like "Gaming PC" or a folder like
# "citron whitespace test"), redirect both the build staging area and the install
# prefix to a guaranteed-space-free location.
#
# Priority: %SystemRoot%\Temp (C:\Windows\Temp) → $TMPDIR → /tmp
string(FIND "${CMAKE_BINARY_DIR}" " " _openssl_bindir_has_space)
if (_openssl_bindir_has_space GREATER -1)
if (DEFINED ENV{SystemRoot})
string(REPLACE "\\" "/" _openssl_sysroot "$ENV{SystemRoot}")
set(_OPENSSL_SAFE_TMP "${_openssl_sysroot}/Temp/citron-openssl-${CMAKE_SYSTEM_NAME}")
elseif(DEFINED ENV{TMPDIR})
set(_OPENSSL_SAFE_TMP "$ENV{TMPDIR}/citron-openssl-${CMAKE_SYSTEM_NAME}")
else()
set(_OPENSSL_SAFE_TMP "/tmp/citron-openssl-${CMAKE_SYSTEM_NAME}")
endif()
set(_OPENSSL_BUILD_DIR "${_OPENSSL_SAFE_TMP}/build")
set(_OPENSSL_INSTALL "${_OPENSSL_SAFE_TMP}/install")
message(STATUS "[OpenSSL] Binary dir has spaces — redirecting build/install to ${_OPENSSL_SAFE_TMP}")
else()
set(_OPENSSL_BUILD_DIR "${CMAKE_BINARY_DIR}/externals/openssl-build")
endif()
# Determine the OpenSSL build target and toolchain.
#
# Three cases:
# 1. MSYS2 native (WIN32=TRUE)
# Target: mingw64 CC: clang (CLANG64 sysroot resolves it)
# 2. Linux → Windows cross-compile (CMAKE_C_COMPILER contains x86_64-w64-mingw32)
# Target: mingw64 CC: clang + cross-prefix (tools prepended to PATH)
# 3. Linux native (everything else)
# Target: (empty → OpenSSL auto-detects linux-x86_64 etc.)
# CC: CMAKE_C_COMPILER AR: CMAKE_AR RANLIB: CMAKE_RANLIB
set(_OPENSSL_CROSS "")
set(_OPENSSL_TARGET "")
set(_OPENSSL_CC "${CMAKE_C_COMPILER}")
set(_OPENSSL_AR "${CMAKE_AR}")
set(_OPENSSL_RANLIB "${CMAKE_RANLIB}")
set(_OPENSSL_RC "${CMAKE_RC_COMPILER}")
if (CMAKE_CROSSCOMPILING AND CMAKE_C_COMPILER MATCHES "x86_64-w64-mingw32")
# Case 2: Linux → Windows cross-compile with llvm-mingw.
set(_OPENSSL_TARGET "mingw64")
set(_OPENSSL_CROSS "x86_64-w64-mingw32-")
set(_OPENSSL_CC "clang")
set(_OPENSSL_AR "llvm-ar")
set(_OPENSSL_RANLIB "llvm-ranlib")
set(_OPENSSL_RC "windres")
elseif (WIN32)
# Case 1: MSYS2 native Windows build. CMake's WIN32 is target-based, so
# this must come after the Linux-to-Windows cross-compile case above.
set(_OPENSSL_TARGET "mingw64")
set(_OPENSSL_CC "clang")
set(_OPENSSL_AR "llvm-ar")
set(_OPENSSL_RANLIB "llvm-ranlib")
set(_OPENSSL_RC "windres")
endif()
# Case 3: Linux native — _OPENSSL_TARGET stays empty (auto-detect), tools stay
# as CMAKE_C_COMPILER / CMAKE_AR / CMAKE_RANLIB set above.
set(_OPENSSL_IS_MINGW_CROSS FALSE)
if (_OPENSSL_CROSS)
set(_OPENSSL_IS_MINGW_CROSS TRUE)
endif()
function(_citron_detect_openssl_libdir out_var)
set(_detected "")
foreach(_candidate_libdir lib64 lib)
if (EXISTS "${_OPENSSL_INSTALL}/${_candidate_libdir}/libssl.a")
set(_detected "${_candidate_libdir}")
break()
endif()
endforeach()
set(${out_var} "${_detected}" PARENT_SCOPE)
endfunction()
function(_citron_publish_openssl_imports)
_citron_detect_openssl_libdir(_OPENSSL_PUBLISH_LIBDIR)
if (NOT _OPENSSL_PUBLISH_LIBDIR)
message(WARNING "[OpenSSL] Static libraries not found under ${_OPENSSL_INSTALL}/{lib64,lib}")
return()
endif()
set(OPENSSL_ROOT_DIR "${_OPENSSL_INSTALL}" CACHE PATH "" FORCE)
set(OPENSSL_INCLUDE_DIR "${_OPENSSL_INSTALL}/include" CACHE PATH "" FORCE)
set(OPENSSL_SSL_LIBRARY "${_OPENSSL_INSTALL}/${_OPENSSL_PUBLISH_LIBDIR}/libssl.a" CACHE FILEPATH "" FORCE)
set(OPENSSL_CRYPTO_LIBRARY "${_OPENSSL_INSTALL}/${_OPENSSL_PUBLISH_LIBDIR}/libcrypto.a" CACHE FILEPATH "" FORCE)
set(OPENSSL_FOUND TRUE CACHE BOOL "" FORCE)
# Platform-specific link requirements:
# Windows PE (MSYS2 native or cross-compile): ws2_32 for Winsock, crypt32 for CryptoAPI
# Linux ELF native: dl for any remaining dynamic resolution paths
if (WIN32 OR CMAKE_CROSSCOMPILING)
set(_openssl_extra_libs "ws2_32;crypt32")
else()
set(_openssl_extra_libs "dl")
endif()
if (NOT TARGET OpenSSL::Crypto)
add_library(OpenSSL::Crypto STATIC IMPORTED GLOBAL)
endif()
set_target_properties(OpenSSL::Crypto PROPERTIES
IMPORTED_LOCATION "${OPENSSL_CRYPTO_LIBRARY}"
INTERFACE_INCLUDE_DIRECTORIES "${OPENSSL_INCLUDE_DIR}"
INTERFACE_LINK_LIBRARIES "${_openssl_extra_libs}")
if (NOT TARGET OpenSSL::SSL)
add_library(OpenSSL::SSL STATIC IMPORTED GLOBAL)
endif()
set_target_properties(OpenSSL::SSL PROPERTIES
IMPORTED_LOCATION "${OPENSSL_SSL_LIBRARY}"
INTERFACE_INCLUDE_DIRECTORIES "${OPENSSL_INCLUDE_DIR}"
INTERFACE_LINK_LIBRARIES "OpenSSL::Crypto")
endfunction()
_citron_detect_openssl_libdir(_OPENSSL_LIBDIR)
# If a previous configure left stale OpenSSL cache entries behind, clear them
# before we decide whether to use the cached install or rebuild.
if (CMAKE_CROSSCOMPILING)
unset(OPENSSL_FOUND CACHE)
unset(OPENSSL_ROOT_DIR CACHE)
unset(OPENSSL_INCLUDE_DIR CACHE)
unset(OPENSSL_SSL_LIBRARY CACHE)
unset(OPENSSL_CRYPTO_LIBRARY CACHE)
endif()
# A Windows cross OpenSSL archive compiled with host clang contains ELF members,
# which lld later rejects as "unknown file type". Treat any cached cross build
# whose generated Makefile lacks the expected prefix as stale and rebuild it.
if (_OPENSSL_LIBDIR AND _OPENSSL_IS_MINGW_CROSS)
set(_openssl_cache_valid TRUE)
set(_openssl_makefile "${_OPENSSL_BUILD_DIR}/Makefile")
if (EXISTS "${_openssl_makefile}")
file(STRINGS "${_openssl_makefile}" _openssl_cross_compile_line
REGEX "^CROSS_COMPILE=" LIMIT_COUNT 1)
if (NOT _openssl_cross_compile_line STREQUAL "CROSS_COMPILE=${_OPENSSL_CROSS}")
set(_openssl_cache_valid FALSE)
endif()
else()
set(_openssl_cache_valid FALSE)
endif()
if (NOT _openssl_cache_valid)
message(STATUS "[OpenSSL] Cached Windows cross build is stale; rebuilding with ${_OPENSSL_CROSS} tools")
file(REMOVE_RECURSE "${_OPENSSL_BUILD_DIR}" "${_OPENSSL_INSTALL}")
set(_OPENSSL_LIBDIR "")
endif()
endif()
# Reuse a previously built cross OpenSSL only when the install tree is intact.
if (_OPENSSL_LIBDIR)
_citron_publish_openssl_imports()
message(STATUS "[OpenSSL] Using cached static build at ${_OPENSSL_INSTALL}")
return()
endif()
# ── Download source via CPM ──────────────────────────────────────────────────
CPMAddPackage(
NAME openssl_src
URL "https://github.com/openssl/openssl/releases/download/openssl-${_OPENSSL_VERSION}/openssl-${_OPENSSL_VERSION}.tar.gz"
DOWNLOAD_ONLY YES
)
if (NOT openssl_src_ADDED)
message(WARNING "[OpenSSL] Source download failed — OpenSSL will not be available")
return()
endif()
# ── Build from source ────────────────────────────────────────────────────────
find_program(_PERL perl REQUIRED)
if (NOT _PERL)
message(FATAL_ERROR "[OpenSSL] Perl is required to build OpenSSL from source")
endif()
# OpenSSL's Configure script often generates broken relative paths in the Makefile
# when the source and build directories are on different drives (e.g. source on C:,
# build on D:). To avoid this, we copy the source into the build directory.
set(_OPENSSL_LOCAL_SRC "${_OPENSSL_BUILD_DIR}/src")
if (NOT EXISTS "${_OPENSSL_LOCAL_SRC}/Configure")
message(STATUS "[OpenSSL] Copying source to build directory to avoid cross-drive path issues...")
file(REMOVE_RECURSE "${_OPENSSL_LOCAL_SRC}")
file(COPY "${openssl_src_SOURCE_DIR}/" DESTINATION "${_OPENSSL_LOCAL_SRC}")
endif()
# For Linux cross-compile (case 2) the llvm-mingw tools must be in PATH so
# x86_64-w64-mingw32-clang is found. Prepend the toolchain dir from CMAKE_C_COMPILER.
set(_openssl_env_path "$ENV{PATH}")
if (_OPENSSL_CROSS)
get_filename_component(_openssl_tool_dir "${CMAKE_C_COMPILER}" DIRECTORY)
set(_openssl_env_path "${_openssl_tool_dir}:$ENV{PATH}")
endif()
# Determine what we are building for (for the status message).
if (_OPENSSL_TARGET)
set(_openssl_target_label "${_OPENSSL_TARGET}")
else()
set(_openssl_target_label "native (auto)")
endif()
message(STATUS "[OpenSSL] Building OpenSSL ${_OPENSSL_VERSION} from source (static, ${_openssl_target_label})...")
file(MAKE_DIRECTORY "${_OPENSSL_BUILD_DIR}")
# AES-NI / assembly: OpenSSL's x86_64 assembly (aesni-x86_64.pl, sha256-x86_64.pl, etc.)
# requires NASM as a host tool. Both build scripts already install nasm, so we
# enable assembly unconditionally here. If NASM is not found we emit a clear
# fatal error rather than silently falling back to the slow pure-C AES path.
#
# Note: for the Linux→Windows cross-compile (Case 2), OpenSSL's mingw64 target
# generates x86_64 NASM object files using the *host* nasm binary — not a
# prefixed cross-tool — so the same nasm package used for FFmpeg works here too.
find_program(_OPENSSL_NASM nasm)
if (NOT _OPENSSL_NASM)
message(FATAL_ERROR
"[OpenSSL] NASM not found in PATH. OpenSSL's AES-NI / SHA-NI assembly "
"optimisations require NASM.\n"
" Ubuntu/Debian : sudo apt-get install nasm\n"
" Fedora/RHEL : sudo dnf install nasm\n"
" openSUSE : sudo zypper install nasm\n"
" MSYS2 : pacman -S mingw-w64-clang-x86_64-nasm\n"
"Both build scripts (build-citron-linux.sh, build-clangtron-windows.sh) "
"already install nasm as part of their dependency setup.")
endif()
message(STATUS "[OpenSSL] NASM found: ${_OPENSSL_NASM}")
# Build Configure argument list
set(_OPENSSL_CONFIGURE_ARGS
${_OPENSSL_TARGET}
--prefix=${_OPENSSL_INSTALL}
no-shared
no-dso
no-tests
no-docs
no-apps
no-capieng
no-winstore
)
if (_OPENSSL_CROSS)
list(APPEND _OPENSSL_CONFIGURE_ARGS "--cross-compile-prefix=${_OPENSSL_CROSS}")
endif()
list(APPEND _OPENSSL_CONFIGURE_ARGS
"CC=${_OPENSSL_CC}"
"AR=${_OPENSSL_AR}"
"RANLIB=${_OPENSSL_RANLIB}"
)
if (_OPENSSL_RC)
list(APPEND _OPENSSL_CONFIGURE_ARGS "RC=${_OPENSSL_RC}")
endif()
# Configure
execute_process(
COMMAND ${CMAKE_COMMAND} -E env "PATH=${_openssl_env_path}"
${_PERL} "${_OPENSSL_LOCAL_SRC}/Configure"
${_OPENSSL_CONFIGURE_ARGS}
WORKING_DIRECTORY "${_OPENSSL_BUILD_DIR}"
RESULT_VARIABLE _ssl_config_result
)
if (NOT _ssl_config_result EQUAL 0)
message(FATAL_ERROR "[OpenSSL] Configure failed (exit ${_ssl_config_result}). "
"Check that Perl and a MinGW-compatible toolchain are available.")
endif()
# Build + install (just libraries, no apps)
include(ProcessorCount)
ProcessorCount(_NPROC)
if (_NPROC EQUAL 0)
set(_NPROC 4)
endif()
execute_process(
COMMAND ${CMAKE_COMMAND} -E env "PATH=${_openssl_env_path}"
make -j${_NPROC} build_libs
WORKING_DIRECTORY "${_OPENSSL_BUILD_DIR}"
RESULT_VARIABLE _ssl_build_result
OUTPUT_QUIET
)
if (NOT _ssl_build_result EQUAL 0)
message(FATAL_ERROR "[OpenSSL] Build failed (exit ${_ssl_build_result}).")
endif()
execute_process(
COMMAND ${CMAKE_COMMAND} -E env "PATH=${_openssl_env_path}"
make install_sw
WORKING_DIRECTORY "${_OPENSSL_BUILD_DIR}"
RESULT_VARIABLE _ssl_install_result
OUTPUT_QUIET
)
if (NOT _ssl_install_result EQUAL 0)
message(FATAL_ERROR "[OpenSSL] Install failed (exit ${_ssl_install_result}).")
endif()
message(STATUS "[OpenSSL] Successfully built static OpenSSL ${_OPENSSL_VERSION}")
_citron_publish_openssl_imports()
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