nagios4/autoconf-macros/ax_nagios_get_ssl

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2019-04-18 17:09:18 +02:00
# ===========================================================================
# SYNOPSIS
#
# AX_NAGIOS_GET_SSL
#
# DESCRIPTION
#
# This macro finds the openssl binary, the header files directory and
# the library files directory. It will also search for the gnutls
# compatibility library/headers and the nss compatibility library/headers.
#
# LICENSE
#
# Copyright (c) 2016 Nagios Core Development Team
#
# This program is free software; you can redistribute it and/or modify it
# under the terms of the GNU General Public License as published by the
# Free Software Foundation; either version 2 of the License, or (at your
# option) any later version.
#
# This program is distributed in the hope that it will be useful, but
# WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
# Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program. If not, see <http://www.gnu.org/licenses/>.
#
# As a special exception, the respective Autoconf Macro's copyright owner
# gives unlimited permission to copy, distribute and modify the configure
# scripts that are the output of Autoconf when processing the Macro. You
# need not follow the terms of the GNU General Public License when using
# or distributing such scripts, even though portions of the text of the
# Macro appear in them. The GNU General Public License (GPL) does govern
# all other use of the material that constitutes the Autoconf Macro.
#
# This special exception to the GPL applies to versions of the Autoconf
# Macro released by the Autoconf Archive. When you make and distribute a
# modified version of the Autoconf Macro, you may extend this special
# exception to the GPL to apply to your modified version as well.
# ===========================================================================
AU_ALIAS([AC_NAGIOS_GET_SSL], [AX_NAGIOS_GET_SSL])
AC_DEFUN([AX_NAGIOS_GET_SSL],
[
# -------------------------------
# SSL library and include paths
# -------------------------------
SSL_TYPE=openssl
try_pkg_config=1
ssl_dir=
ssl_inc_dir=
ssl_lib_dir=
SSL_INC_DIR=
SSL_INC_PREFIX=
SSL_HDR=
SSL_LIB_DIR=
AC_SUBST(HAVE_SSL)
AC_SUBST(SSL_TYPE)
AC_SUBST(SSL_INC_DIR)
AC_SUBST(SSL_HDR)
AC_SUBST(SSL_INC_PREFIX)
AC_SUBST(SSL_LIB_DIR)
# gnutls/openssl.h
# nss_compat_ossl/nss_compat_ossl.h
dnl # Which type - openssl, gnutls-openssl, nss
dnl AC_ARG_WITH([ssl-type],
dnl dnl AS_HELP_STRING([--with-ssl-type=TYPE],[replace TYPE with gnutls or nss to use one of these instead of openssl]),
dnl AS_HELP_STRING([--with-ssl-type=TYPE],[replace TYPE with gnutls to use that instead of openssl]),
dnl [SSL_TYPE=$withval])
AC_ARG_WITH([ssl],
AS_HELP_STRING([--with-ssl=DIR],[sets location of the SSL installation]),
[ssl_dir=$withval])
AC_ARG_WITH([ssl-inc],
AS_HELP_STRING([--with-ssl-inc=DIR],
[sets location of the SSL include files]),
[ssl_inc_dir=$withval])
AC_ARG_WITH([ssl-lib],
AS_HELP_STRING([--with-ssl-lib=DIR],[sets location of the SSL libraries]),
[ssl_lib_dir=$withval])
if test x$ssl_inc_dir != x -o x$ssl_lib_dir != x; then
try_pkg_config=0
fi
AC_ARG_WITH([kerberos-inc],
AS_HELP_STRING([--with-kerberos-inc=DIR],
[sets location of the Kerberos include files]),
[kerberos_inc_dir=$withval])
if test x$SSL_TYPE = xyes; then
SSL_TYPE=openssl
fi
dflt_hdrs="$ssl_inc_dir $ssl_dir $ssl_inc_dir/include $ssl_dir/include \
/usr/local/opt/{BBB} /usr/include/{BBB} /usr/local/include/{BBB} \
/usr/local/{AAA} /usr/local/{BBB} /usr/lib/{AAA} /usr/lib/{BBB} \
/usr/{AAA} /usr/pkg /usr/local /usr /usr/freeware/lib/{BBB} \
/usr/sfw /usr/sfw/include /opt/{BBB}"
dflt_libs="$ssl_lib_dir {ssldir} {ssldir}/lib {ssldir}/lib64 /usr/lib64 \
/usr/lib /usr/lib/x86_64-linux-gnu /usr/lib/i386-linux-gnu \
/usr/local/lib /usr/lib/{AAA} /usr/{AAA}/lib /usr/{BBB}/lib \
/usr/pkg/lib /usr/freeware/lib/{BBB} /usr/sfw/lib /opt/freeware/lib \
/opt/{BBB}/lib/hpux64 /opt/{BBB}/lib/pa20_64 /opt/{BBB}/lib/hpux32 \
/opt/{BBB}/lib /opt/{BBB}";
AS_CASE([$SSL_TYPE],
[no], [SSL_TYPE=NONE],
[yes|openssl],
[ssl_hdr_dirs=`echo "$dflt_hdrs" | sed -e 's/{AAA}/ssl/g' | sed -e 's/{BBB}/openssl/g'`
ssl_lib_dirs=`echo "$dflt_libs" | sed -e 's/{AAA}/ssl/g' | sed -e 's/{BBB}/openssl/g'`
SSL_INC_PREFIX=openssl
SSL_HDR=ssl.h
ssl_lib=libssl],
[gnutls],
[ssl_hdr_dirs=`echo "$dflt_hdrs" | sed -e 's/{AAA}/gnutls/g' | sed -e 's/{BBB}/gnutls/g'`
ssl_lib_dirs=`echo "$dflt_libs" | sed -e 's/{AAA}/gnutls/g' | sed -e 's/{BBB}/gnutls/g'`
SSL_INC_PREFIX=gnutls
SSL_TYPE=gnutls_compat
SSL_HDR=compat.h
ssl_lib=libgnutls],
[nss],
[ssl_hdr_dirs=`echo "$dflt_hdrs" | sed -e 's/{AAA}/nss_compat_ossl/g' | sed -e 's/{BBB}/nss_compat_ossl/g'`
ssl_lib_dirs=`echo "$dflt_libs" | sed -e 's/{AAA}/nss_compat_ossl/g' | sed -e 's/{BBB}/nss_compat_ossl/g'`
SSL_HDR=nss_compat_ossl.h
ssl_lib=libnss_compat],
[*], echo >&6; AC_MSG_ERROR(['--with-ssl-type=$SSL_TYPE' is invalid])
)
# Check for SSL support
if test x$SSL_TYPE != xNONE; then
found_ssl=no
# RedHat 8.0 and 9.0 include openssl compiled with kerberos,
# so we must include header file
# Must come before openssl checks for Redhat EL 3
AC_MSG_CHECKING(for Kerberos include files)
found_kerberos=no
for dir in $kerberos_inc_dir /usr/kerberos/include /usr/include/krb5 \
/usr/include; do
kerbdir="$dir"
if test -f "$dir/krb5.h"; then
found_kerberos=yes
CFLAGS="$CFLAGS -I$kerbdir"
AC_DEFINE_UNQUOTED(HAVE_KRB5_H,[1],[Have the krb5.h header file])
break
fi
done
if test x_$found_kerberos != x_yes; then
AC_MSG_WARN(could not find include files)
else
AC_MSG_RESULT(found Kerberos include files in $kerbdir)
fi
# First, try using pkg_config
AC_CHECK_TOOL([PKG_CONFIG], [pkg-config])
if test x"$PKG_CONFIG" != x -a $try_pkg_config -ne 0 ; then
cflags=`$PKG_CONFIG $SSL_TYPE --cflags-only-I 2>/dev/null`
if test $? -eq 0; then
CFLAGS="$CFLAGS $cflags"
LDFLAGS="$LDFLAGS `$PKG_CONFIG $SSL_TYPE --libs-only-L 2>/dev/null`"
LIBS="$LIBS `$PKG_CONFIG $SSL_TYPE --libs-only-l 2>/dev/null`"
found_ssl=yes
AC_DEFINE_UNQUOTED(HAVE_SSL,[1],[Have SSL support])
fi
fi
if test x_$found_ssl != x_yes; then
# Find the SSL Headers
AC_MSG_CHECKING(for SSL headers)
for dir in $ssl_hdr_dirs; do
if test "$dir" = "/include"; then
continue
fi
ssldir="$dir"
if test -f "$dir/include/$SSL_INC_PREFIX/$SSL_HDR"; then
found_ssl=yes
CFLAGS="$CFLAGS -I$dir/include/$SSL_INC_PREFIX -I$ssldir/include"
SSL_INC_DIR="$dir/include/$SSL_INC_PREFIX"
break
fi
if test -f "$dir/include/$SSL_HDR"; then
found_ssl=yes
if test "$SSL_HDR" != compat.h ; then
SSL_INC_PREFIX=""
fi
CFLAGS="$CFLAGS -I$dir/include"
SSL_INC_DIR="$dir/include"
break
fi
if test -f "$dir/$SSL_HDR"; then
found_ssl=yes
SSL_INC_PREFIX=""
CFLAGS="$CFLAGS -I$dir"
SSL_INC_DIR="$dir"
break
fi
if test -f "$dir/$SSL_INC_PREFIX/$SSL_HDR"; then
found_ssl=yes
CFLAGS="$CFLAGS -I$dir/$SSL_INC_PREFIX"
SSL_INC_DIR="$dir/$SSL_INC_PREFIX"
ssldir="$dir/.."
break
fi
done
if test x_$found_ssl != x_yes; then
AC_MSG_ERROR(Cannot find ssl headers)
else
AC_MSG_RESULT(found in $ssldir)
# Now try and find SSL libraries
AC_MSG_CHECKING(for SSL libraries)
found_ssl=no
ssl_lib_dirs=`echo "$ssl_lib_dirs" | sed -e "s|{ssldir}|$ssldir|g"`
if test "`uname -s`" = "Darwin" ; then
soext="dylib"
elif test "`uname -s`" = "HP-UX" ; then
if test x$arch = "xia64"; then
soext="so"
else
soext="sl"
fi
elif test "`uname -s`" = "AIX" ; then
soext="a"
else
soext="so"
fi
for dir in $ssl_lib_dirs; do
if test -f "$dir/$ssl_lib.$soext"; then
found_ssl=yes
SSL_LIB_DIR="$dir"
break
fi
done
if test x_$found_ssl != x_yes; then
AC_MSG_ERROR(Cannot find ssl libraries)
else
AC_MSG_RESULT(found in $SSL_LIB_DIR)
LDFLAGS="$LDFLAGS -L$SSL_LIB_DIR";
LIBS="$LIBS -l`echo $ssl_lib | sed -e 's/^lib//'` -lcrypto";
AC_DEFINE_UNQUOTED(HAVE_SSL,[1],[Have SSL support])
fi
fi
fi
if test x$found_ssl = xyes ; then
if test -n "$SSL_INC_PREFIX" ; then
SSL_INC_PREFIX="${SSL_INC_PREFIX}/"
fi
# try to compile and link to see if SSL is set up properly
AC_MSG_CHECKING([whether compiling and linking against SSL works])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <${SSL_INC_PREFIX}${SSL_HDR}>], [SSL_new(NULL)])],
[
AC_MSG_RESULT([yes])
$1
], [
AC_MSG_ERROR([no])
$2
])
fi
if test x$found_ssl = xyes -a x$need_dh = xyes; then
# Find the openssl program
if test x$need_dh = xyes; then
AC_PATH_PROG(sslbin,openssl,value-if-not-found,$ssl_dir/sbin$PATH_SEPARATOR$ssl_dir/bin$PATH_SEPARATOR$PATH)
AC_DEFINE(USE_SSL_DH)
# Generate DH parameters
if test -f "$sslbin"; then
echo ""
echo "*** Generating DH Parameters for SSL/TLS ***"
# awk to strip off meta data at bottom of dhparam output
$sslbin dhparam -C 2048 | awk '/^-----/ {exit} {print}' > include/dh.h
fi
fi
fi
fi
])