# GNSS-SDR is a Global Navigation Satellite System software-defined receiver. # This file is part of GNSS-SDR. # # SPDX-FileCopyrightText: 2024 C. Fernandez-Prades cfernandez(at)cttc.es # SPDX-License-Identifier: BSD-3-Clause ################################################################################ # OpenSSL https://www.openssl.org/ ################################################################################ if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin") set(OPENSSL_ROOT_DIR /usr/local/opt/openssl) # Trick for Homebrew endif() unset(OPENSSL_FOUND CACHE) unset(GnuTLS_FOUND CACHE) if(NOT ENABLE_GNUTLS) find_package(OpenSSL) endif() set_package_properties(OpenSSL PROPERTIES URL "https://www.openssl.org" PURPOSE "Used for the OSNMA and SUPL protocol implementations." TYPE REQUIRED ) if(OPENSSL_FOUND) set_package_properties(OpenSSL PROPERTIES DESCRIPTION "Cryptography and SSL/TLS Toolkit (found: v${OPENSSL_VERSION})" ) else() set_package_properties(OpenSSL PROPERTIES DESCRIPTION "OpenSSL has not been found, but GnuTLS with openssl compatibility can replace it" ) ################################################################################ # GnuTLS - https://www.gnutls.org/ ################################################################################ find_package(GnuTLS) set_package_properties(GnuTLS PROPERTIES URL "https://www.gnutls.org/" PURPOSE "Used for the OSNMA and SUPL protocol implementations." TYPE REQUIRED ) if(GnuTLS_FOUND AND GNUTLS_VERSION_STRING) set_package_properties(GnuTLS PROPERTIES DESCRIPTION "Transport Layer Security Library (found: v${GNUTLS_VERSION_STRING})" ) else() set_package_properties(GnuTLS PROPERTIES DESCRIPTION "Transport Layer Security Library" ) endif() find_library(GNUTLS_OPENSSL_LIBRARY NAMES gnutls-openssl libgnutls-openssl.so.27 PATHS /usr/lib /usr/lib64 /usr/lib/x86_64-linux-gnu /usr/lib/aarch64-linux-gnu /usr/lib/arm-linux-gnueabihf /usr/lib/arm-linux-gnueabi /usr/lib/i386-linux-gnu /usr/lib/alpha-linux-gnu /usr/lib/hppa-linux-gnu /usr/lib/i386-gnu /usr/lib/i686-gnu /usr/lib/i686-linux-gnu /usr/lib/x86_64-kfreebsd-gnu /usr/lib/i686-kfreebsd-gnu /usr/lib/m68k-linux-gnu /usr/lib/mips-linux-gnu /usr/lib/mips64el-linux-gnuabi64 /usr/lib/mipsel-linux-gnu /usr/lib/powerpc-linux-gnu /usr/lib/powerpc-linux-gnuspe /usr/lib/powerpc64-linux-gnu /usr/lib/powerpc64le-linux-gnu /usr/lib/s390x-linux-gnu /usr/lib/riscv64-linux-gnu /usr/lib/sparc64-linux-gnu /usr/lib/x86_64-linux-gnux32 /usr/lib/sh4-linux-gnu /usr/lib/loongarch64-linux-gnu /usr/local/lib /usr/local/lib64 /opt/local/lib ) find_path(GNUTLS_INCLUDE_DIR NAMES gnutls/gnutls.h PATHS /usr/include /usr/local/include /opt/local/include # default location in Macports /opt/homebrew/opt/gnutls/include/ ${GNUTLS_ROOT_DIR}/include/ ) if(NOT GNUTLS_OPENSSL_LIBRARY) message(" The GnuTLS library with openssl compatibility enabled has not been found.") message(" You can try to install the required libraries by typing:") if(${CMAKE_SYSTEM_NAME} MATCHES "Linux|kFreeBSD|GNU") if(${LINUX_DISTRIBUTION} MATCHES "Fedora" OR ${LINUX_DISTRIBUTION} MATCHES "Red Hat") message(" sudo yum install openssl-devel") else() message(" sudo apt-get install libgnutls28-dev") endif() endif() if(${CMAKE_SYSTEM_NAME} MATCHES "Darwin") message(" 'sudo port install openssl3', if you are using Macports, or") message(" 'brew install openssl', if you are using Homebrew.") endif() message(FATAL_ERROR "OpenSSL or the GnuTLS libraries with openssl compatibility are required to build gnss-sdr") endif() # Test GnuTLS capabilities file(READ "${GNUTLS_INCLUDE_DIR}/gnutls/gnutls.h" gnutls_gnutls_file_contents) if("${gnutls_gnutls_file_contents}" MATCHES "GNUTLS_SIGN_ECDSA_SHA256") set(GNUTLS_SIGN_ECDSA_SHA256 TRUE) endif() if("${gnutls_gnutls_file_contents}" MATCHES "GNUTLS_SIGN_ECDSA_SHA512") set(GNUTLS_SIGN_ECDSA_SHA512 TRUE) endif() if("${gnutls_gnutls_file_contents}" MATCHES "GNUTLS_DIG_SHA3_256") set(GNUTLS_DIG_SHA3_256 TRUE) endif() if("${gnutls_gnutls_file_contents}" MATCHES "#define GNUTLS_VERSION_MAJOR 2") set(GNUTLS_HMAC_INIT_WITH_DIGEST TRUE) endif() if("${gnutls_gnutls_file_contents}" MATCHES "GNUTLS_MAC_AES_CMAC_128") set(GNUTLS_MAC_AES_CMAC_128 TRUE) endif() file(READ "${GNUTLS_INCLUDE_DIR}/gnutls/abstract.h" gnutls_abstract_file_contents) if("${gnutls_abstract_file_contents}" MATCHES "gnutls_pubkey_export2") set(GNUTLS_PUBKEY_EXPORT2 TRUE) endif() endif() ################################################################################ function(link_to_crypto_dependencies target) if(OPENSSL_FOUND) if(TARGET OpenSSL::SSL) target_link_libraries(${target} PUBLIC OpenSSL::SSL ) if(TARGET OpenSSL::Crypto) target_link_libraries(${target} PUBLIC OpenSSL::Crypto ) endif() else() target_link_libraries(${target} PUBLIC ${OPENSSL_LIBRARIES} "${OPENSSL_CRYPTO_LIBRARIES}" ) target_include_directories(${target} PUBLIC ${OPENSSL_INCLUDE_DIR} ) endif() if(OPENSSL_VERSION) if(OPENSSL_VERSION VERSION_GREATER "3.0.0") target_compile_definitions(${target} PUBLIC -DUSE_OPENSSL_3=1) else() if(NOT OPENSSL_VERSION VERSION_LESS "1.1.1") target_compile_definitions(${target} PUBLIC -DUSE_OPENSSL_111=1) endif() endif() endif() else() # GnuTLS target_link_libraries(${target} PUBLIC ${GNUTLS_LIBRARIES} ${GNUTLS_OPENSSL_LIBRARY} ) target_include_directories(${target} PUBLIC ${GNUTLS_INCLUDE_DIR} ) target_compile_definitions(${target} PUBLIC -DUSE_GNUTLS_FALLBACK=1) if(GNUTLS_SIGN_ECDSA_SHA256) target_compile_definitions(${target} PRIVATE -DHAVE_GNUTLS_SIGN_ECDSA_SHA256=1) endif() if(GNUTLS_SIGN_ECDSA_SHA512) target_compile_definitions(${target} PRIVATE -DHAVE_GNUTLS_SIGN_ECDSA_SHA512=1) endif() if(GNUTLS_DIG_SHA3_256) target_compile_definitions(${target} PRIVATE -DHAVE_GNUTLS_DIG_SHA3_256=1) endif() if(GNUTLS_PUBKEY_EXPORT2) target_compile_definitions(${target} PRIVATE -DHAVE_GNUTLS_PUBKEY_EXPORT2=1) endif() if(GNUTLS_HMAC_INIT_WITH_DIGEST) target_compile_definitions(${target} PRIVATE -DHAVE_GNUTLS_HMAC_INIT_WITH_DIGEST=1) endif() if(GNUTLS_MAC_AES_CMAC_128) target_compile_definitions(${target} PRIVATE -DHAVE_GNUTLS_MAC_AES_CMAC_128=1) endif() endif() endfunction()