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|
#***************************************************************************
# _ _ ____ _
# Project ___| | | | _ \| |
# / __| | | | |_) | |
# | (__| |_| | _ <| |___
# \___|\___/|_| \_\_____|
#
# Copyright (C) Daniel Stenberg, <daniel@haxx.se>, et al.
#
# This software is licensed as described in the file COPYING, which
# you should have received as part of this distribution. The terms
# are also available at https://curl.se/docs/copyright.html.
#
# You may opt to use, copy, modify, merge, publish, distribute and/or sell
# copies of the Software, and permit persons to whom the Software is
# furnished to do so, under the terms of the COPYING file.
#
# This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
# KIND, either express or implied.
#
# SPDX-License-Identifier: curl
#
###########################################################################
# Find the GSS Kerberos library
#
# Input variables:
#
# - `GSS_ROOT_DIR`: Set this variable to the root installation of GSS. (also supported as environment)
#
# Result variables:
#
# - `GSS_FOUND`: System has the Heimdal library.
# - `GSS_FLAVOUR`: "GNU", "MIT" or "Heimdal" if anything found.
# - `GSS_INCLUDE_DIRS`: The GSS include directories.
# - `GSS_LIBRARIES`: The GSS library names.
# - `GSS_LIBRARY_DIRS`: The GSS library directories.
# - `GSS_PC_REQUIRES`: The GSS pkg-config packages.
# - `GSS_CFLAGS`: Required compiler flags.
# - `GSS_VERSION`: This is set to version advertised by pkg-config or read from manifest.
# In case the library is found but no version info available it is set to "unknown"
set(_gnu_modname "gss")
set(_mit_modname "mit-krb5-gssapi")
set(_heimdal_modname "heimdal-gssapi")
include(CheckIncludeFile)
include(CheckIncludeFiles)
include(CheckTypeSize)
set(_gss_root_hints
"${GSS_ROOT_DIR}"
"$ENV{GSS_ROOT_DIR}"
)
# Try to find library using system pkg-config if user did not specify root dir
if(NOT GSS_ROOT_DIR AND NOT "$ENV{GSS_ROOT_DIR}")
if(CURL_USE_PKGCONFIG)
find_package(PkgConfig QUIET)
pkg_search_module(_GSS ${_gnu_modname} ${_mit_modname} ${_heimdal_modname})
list(APPEND _gss_root_hints "${_GSS_PREFIX}")
endif()
if(WIN32)
list(APPEND _gss_root_hints "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos;InstallDir]")
endif()
endif()
if(NOT _GSS_FOUND) # Not found by pkg-config. Let us take more traditional approach.
find_file(_gss_configure_script
NAMES
"krb5-config"
HINTS
${_gss_root_hints}
PATH_SUFFIXES
"bin"
NO_CMAKE_PATH
NO_CMAKE_ENVIRONMENT_PATH
)
# If not found in user-supplied directories, maybe system knows better
find_file(_gss_configure_script
NAMES
"krb5-config"
PATH_SUFFIXES
"bin"
)
if(_gss_configure_script)
execute_process(
COMMAND ${_gss_configure_script} "--cflags" "gssapi"
OUTPUT_VARIABLE _GSS_CFLAGS
RESULT_VARIABLE _gss_configure_failed
OUTPUT_STRIP_TRAILING_WHITESPACE
)
message(STATUS "FindGSS krb5-config --cflags: ${_GSS_CFLAGS}")
if(NOT _gss_configure_failed) # 0 means success
# Should also work in an odd case when multiple directories are given
string(STRIP "${_GSS_CFLAGS}" _GSS_CFLAGS)
string(REGEX REPLACE " +-I" ";" _GSS_CFLAGS "${_GSS_CFLAGS}")
string(REGEX REPLACE " +-([^I][^ \\t;]*)" ";-\\1" _GSS_CFLAGS "${_GSS_CFLAGS}")
foreach(_flag IN LISTS _GSS_CFLAGS)
if(_flag MATCHES "^-I")
string(REGEX REPLACE "^-I" "" _val "${_flag}")
list(APPEND _GSS_INCLUDE_DIRS "${_val}")
else()
list(APPEND _GSS_CFLAGS "${_flag}")
endif()
endforeach()
endif()
execute_process(
COMMAND ${_gss_configure_script} "--libs" "gssapi"
OUTPUT_VARIABLE _gss_lib_flags
RESULT_VARIABLE _gss_configure_failed
OUTPUT_STRIP_TRAILING_WHITESPACE
)
message(STATUS "FindGSS krb5-config --libs: ${_gss_lib_flags}")
if(NOT _gss_configure_failed) # 0 means success
# This script gives us libraries and link directories. Blah. We have to deal with it.
string(STRIP "${_gss_lib_flags}" _gss_lib_flags)
string(REGEX REPLACE " +-(L|l)" ";-\\1" _gss_lib_flags "${_gss_lib_flags}")
string(REGEX REPLACE " +-([^Ll][^ \\t;]*)" ";-\\1" _gss_lib_flags "${_gss_lib_flags}")
foreach(_flag IN LISTS _gss_lib_flags)
if(_flag MATCHES "^-l")
string(REGEX REPLACE "^-l" "" _val "${_flag}")
list(APPEND _GSS_LIBRARIES "${_val}")
elseif(_flag MATCHES "^-L")
string(REGEX REPLACE "^-L" "" _val "${_flag}")
list(APPEND _GSS_LIBRARY_DIRS "${_val}")
endif()
endforeach()
endif()
execute_process(
COMMAND ${_gss_configure_script} "--version"
OUTPUT_VARIABLE _GSS_VERSION
RESULT_VARIABLE _gss_configure_failed
OUTPUT_STRIP_TRAILING_WHITESPACE
)
# Older versions may not have the "--version" parameter. In this case we just do not care.
if(_gss_configure_failed)
set(_GSS_VERSION 0)
endif()
execute_process(
COMMAND ${_gss_configure_script} "--vendor"
OUTPUT_VARIABLE _gss_vendor
RESULT_VARIABLE _gss_configure_failed
OUTPUT_STRIP_TRAILING_WHITESPACE
)
# Older versions may not have the "--vendor" parameter. In this case we just do not care.
if(_gss_configure_failed)
set(GSS_FLAVOUR "Heimdal") # most probably, should not really matter
else()
if(_gss_vendor MATCHES "H|heimdal")
set(GSS_FLAVOUR "Heimdal")
else()
set(GSS_FLAVOUR "MIT")
endif()
endif()
else() # Either there is no config script or we are on a platform that does not provide one (Windows?)
find_path(_GSS_INCLUDE_DIRS NAMES "gssapi/gssapi.h"
HINTS
${_gss_root_hints}
PATH_SUFFIXES
"include"
"inc"
)
if(_GSS_INCLUDE_DIRS) # jay, we have found something
cmake_push_check_state()
list(APPEND CMAKE_REQUIRED_INCLUDES "${_GSS_INCLUDE_DIRS}")
check_include_files("gssapi/gssapi_generic.h;gssapi/gssapi_krb5.h" _gss_have_mit_headers)
if(_gss_have_mit_headers)
set(GSS_FLAVOUR "MIT")
else()
# Prevent compiling the header - just check if we can include it
list(APPEND CMAKE_REQUIRED_DEFINITIONS "-D__ROKEN_H__")
check_include_file("roken.h" _gss_have_roken_h)
check_include_file("heimdal/roken.h" _gss_have_heimdal_roken_h)
if(_gss_have_roken_h OR _gss_have_heimdal_roken_h)
set(GSS_FLAVOUR "Heimdal")
endif()
endif()
cmake_pop_check_state()
else()
# I am not convinced if this is the right way but this is what autotools do at the moment
find_path(_GSS_INCLUDE_DIRS NAMES "gssapi.h"
HINTS
${_gss_root_hints}
PATH_SUFFIXES
"include"
"inc"
)
if(_GSS_INCLUDE_DIRS)
set(GSS_FLAVOUR "Heimdal")
else()
find_path(_GSS_INCLUDE_DIRS NAMES "gss.h"
HINTS
${_gss_root_hints}
PATH_SUFFIXES
"include"
)
if(_GSS_INCLUDE_DIRS)
set(GSS_FLAVOUR "GNU")
set(GSS_PC_REQUIRES "gss")
endif()
endif()
endif()
# If we have headers, check if we can link libraries
if(GSS_FLAVOUR)
set(_gss_libdir_suffixes "")
set(_gss_libdir_hints ${_gss_root_hints})
get_filename_component(_gss_calculated_potential_root "${_GSS_INCLUDE_DIRS}" DIRECTORY)
list(APPEND _gss_libdir_hints ${_gss_calculated_potential_root})
if(WIN32)
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
list(APPEND _gss_libdir_suffixes "lib/AMD64")
if(GSS_FLAVOUR STREQUAL "GNU")
set(_gss_libname "gss")
elseif(GSS_FLAVOUR STREQUAL "MIT")
set(_gss_libname "gssapi64")
else()
set(_gss_libname "libgssapi")
endif()
else()
list(APPEND _gss_libdir_suffixes "lib/i386")
if(GSS_FLAVOUR STREQUAL "GNU")
set(_gss_libname "gss")
elseif(GSS_FLAVOUR STREQUAL "MIT")
set(_gss_libname "gssapi32")
else()
set(_gss_libname "libgssapi")
endif()
endif()
else()
list(APPEND _gss_libdir_suffixes "lib;lib64") # those suffixes are not checked for HINTS
if(GSS_FLAVOUR STREQUAL "GNU")
set(_gss_libname "gss")
elseif(GSS_FLAVOUR STREQUAL "MIT")
set(_gss_libname "gssapi_krb5")
else()
set(_gss_libname "gssapi")
endif()
endif()
find_library(_GSS_LIBRARIES NAMES ${_gss_libname}
HINTS
${_gss_libdir_hints}
PATH_SUFFIXES
${_gss_libdir_suffixes}
)
endif()
endif()
else()
# _GSS_MODULE_NAME set since CMake 3.16
if(_GSS_MODULE_NAME STREQUAL _gnu_modname OR _GSS_${_gnu_modname}_VERSION)
set(GSS_FLAVOUR "GNU")
set(GSS_PC_REQUIRES "gss")
if(NOT _GSS_VERSION) # for old CMake versions?
set(_GSS_VERSION ${_GSS_${_gnu_modname}_VERSION})
endif()
elseif(_GSS_MODULE_NAME STREQUAL _mit_modname OR _GSS_${_mit_modname}_VERSION)
set(GSS_FLAVOUR "MIT")
set(GSS_PC_REQUIRES "mit-krb5-gssapi")
if(NOT _GSS_VERSION) # for old CMake versions?
set(_GSS_VERSION ${_GSS_${_mit_modname}_VERSION})
endif()
else()
set(GSS_FLAVOUR "Heimdal")
set(GSS_PC_REQUIRES "heimdal-gssapi")
if(NOT _GSS_VERSION) # for old CMake versions?
set(_GSS_VERSION ${_GSS_${_heimdal_modname}_VERSION})
endif()
endif()
message(STATUS "Found GSS/${GSS_FLAVOUR} (via pkg-config): ${_GSS_INCLUDE_DIRS} (found version \"${_GSS_VERSION}\")")
endif()
string(REPLACE ";" " " _GSS_CFLAGS "${_GSS_CFLAGS}")
set(GSS_INCLUDE_DIRS ${_GSS_INCLUDE_DIRS})
set(GSS_LIBRARIES ${_GSS_LIBRARIES})
set(GSS_LIBRARY_DIRS ${_GSS_LIBRARY_DIRS})
set(GSS_CFLAGS ${_GSS_CFLAGS})
set(GSS_VERSION ${_GSS_VERSION})
if(GSS_FLAVOUR)
if(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "Heimdal")
if(CMAKE_SIZEOF_VOID_P EQUAL 8)
set(_heimdal_manifest_file "Heimdal.Application.amd64.manifest")
else()
set(_heimdal_manifest_file "Heimdal.Application.x86.manifest")
endif()
if(EXISTS "${GSS_INCLUDE_DIRS}/${_heimdal_manifest_file}")
file(STRINGS "${GSS_INCLUDE_DIRS}/${_heimdal_manifest_file}" _heimdal_version_str
REGEX "^.*version=\"[0-9]\\.[^\"]+\".*$")
string(REGEX MATCH "[0-9]\\.[^\"]+" GSS_VERSION "${_heimdal_version_str}")
endif()
if(NOT GSS_VERSION)
set(GSS_VERSION "Heimdal Unknown")
endif()
elseif(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "MIT")
get_filename_component(_mit_version "[HKEY_LOCAL_MACHINE\\SOFTWARE\\MIT\\Kerberos\\SDK\\CurrentVersion;VersionString]" NAME
CACHE)
if(WIN32 AND _mit_version)
set(GSS_VERSION "${_mit_version}")
else()
set(GSS_VERSION "MIT Unknown")
endif()
elseif(NOT GSS_VERSION AND GSS_FLAVOUR STREQUAL "GNU")
if(GSS_INCLUDE_DIRS AND EXISTS "${GSS_INCLUDE_DIRS}/gss.h")
set(_version_regex "#[\t ]*define[\t ]+GSS_VERSION[\t ]+\"([^\"]*)\"")
file(STRINGS "${GSS_INCLUDE_DIRS}/gss.h" _version_str REGEX "${_version_regex}")
string(REGEX REPLACE "${_version_regex}" "\\1" _version_str "${_version_str}")
set(GSS_VERSION "${_version_str}")
unset(_version_regex)
unset(_version_str)
endif()
endif()
endif()
include(FindPackageHandleStandardArgs)
find_package_handle_standard_args(GSS
REQUIRED_VARS
GSS_FLAVOUR
GSS_LIBRARIES
VERSION_VAR
GSS_VERSION
FAIL_MESSAGE
"Could NOT find GSS, try to set the path to GSS root folder in the system variable GSS_ROOT_DIR"
)
mark_as_advanced(
_GSS_CFLAGS
_GSS_FOUND
_GSS_INCLUDE_DIRS
_GSS_LIBRARIES
_GSS_LIBRARY_DIRS
_GSS_MODULE_NAME
_GSS_PREFIX
_GSS_VERSION
)
|
