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# BEGIN COPYRIGHT BLOCK
# Copyright (C) 2008 Red Hat, Inc.
# All rights reserved.
#
# 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, write to the Free Software
# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
#
# END COPYRIGHT BLOCK
# -*- tab-width: 4; -*-
# Configure paths for Kerberos
dnl ========================================================
dnl = Kerberos is used directly for server to server SASL/GSSAPI
dnl = authentication (replication, chaining, etc.)
dnl = This allows us to authenticate using a keytab without
dnl = having to call kinit outside the process
dnl ========================================================
AC_CHECKING(for kerberos)
if test -z "$with_kerberos" ; then
with_kerberos=yes # if not set on cmdline, set default
fi
AC_MSG_CHECKING(for --with-kerberos)
AC_ARG_WITH(kerberos,
AS_HELP_STRING([--with-kerberos[=PATH]], [Use the kerberos API in the server directly - allows the server to authenticate directly with a keytab - otherwise, SASL/GSSAPI auth depends on underlying SASL libraries and external kinit with a keytab - if PATH is not specified, look for kerberos in the system locations. This will attempt to use krb5-config from the PATH to find the libs and include dirs - you can specify KRB5_CONFIG_BIN to specify a different filename or absolute path. If krb5-config does not work, this will attempt to look in various system directories]),
[
if test "x$withval" = "xyes"; then
AC_MSG_RESULT(yes)
elif test "x$withval" = "xno"; then
AC_MSG_RESULT(no)
with_kerberos=
elif test -d "$withval" -a -d "$withval/lib" -a -d "$withval/include" ; then
AC_MSG_RESULT([using $withval])
kerberos_incdir="$withval/include"
kerberos_libdir="$withval/lib"
else
AC_MSG_RESULT(yes)
AC_MSG_ERROR([kerberos not found in $withval])
fi
],
[
AC_MSG_RESULT(no)
with_kerberos=
]
)
AC_MSG_CHECKING(for --with-kerberos-inc)
AC_ARG_WITH(kerberos-inc,
AS_HELP_STRING([--with-kerberos-inc=PATH], [Allows you to explicitly set the directory containing the kerberos include files - implies use of kerberos]),
[
if test -f "$withval"/krb5.h; then
AC_MSG_RESULT([using $withval])
kerberos_incdir="$withval"
with_kerberos=yes # implies use of kerberos
else
echo
AC_MSG_ERROR([$withval/krb5.h not found])
fi
],
AC_MSG_RESULT(no)
)
AC_MSG_CHECKING(for --with-kerberos-lib)
AC_ARG_WITH(kerberos-lib,
AS_HELP_STRING([--with-kerberos-lib=PATH], [Allows you to explicitly set the directory containing the kerberos libraries - implies use of kerberos]),
[
if test -d "$withval"; then
AC_MSG_RESULT([using $withval])
kerberos_libdir="$withval"
with_kerberos=yes # implies use of kerberos
else
echo
AC_MSG_ERROR([$withval not found])
fi
],
AC_MSG_RESULT(no)
)
if test -n "$with_kerberos" ; then
if test -z "$kerberos_incdir" -o -z "$kerberos_libdir" ; then
dnl look for these using the krb5-config script
dnl user can define KRB5_CONFIG_BIN to the full path
dnl and filename of the script if it cannot or will not
dnl be found in PATH
if test -z "$KRB5_CONFIG_BIN" ; then
AC_PATH_PROG(KRB5_CONFIG_BIN, krb5-config)
fi
if test -n "$KRB5_CONFIG_BIN" ; then
AC_MSG_CHECKING(for kerberos with $KRB5_CONFIG_BIN)
if test -z "$kerberos_libdir" ; then
kerberos_lib=`$KRB5_CONFIG_BIN --libs krb5`
fi
if test -z "$kerberos_incdir" ; then
kerberos_inc=`$KRB5_CONFIG_BIN --cflags krb5`
fi
dnl if using system includes, inc will be empty - ok
if test -n "$kerberos_lib" ; then
AC_MSG_RESULT([using kerberos found with $KRB5_CONFIG_BIN])
have_krb5=yes
fi
fi
fi
fi
if test -n "$with_kerberos" -a -z "$kerberos_lib" ; then
# save these in order to set them to use the check macros below
# like AC_CHECK_HEADERS, AC_CHECK_LIB, and AC_CHECK_FUNCS
save_CPPFLAGS="$CPPFLAGS"
if test -n "$kerberos_incdir" ; then
CPPFLAGS="-I$kerberos_incdir $CPPFLAGS"
fi
save_LDFLAGS="$LDFLAGS"
if test -n "$kerberos_libdir" ; then
LDFLAGS="-L$kerberos_libdir $LDFLAGS"
fi
krb5_impl=mit
dnl check for Heimdal Kerberos
AC_CHECK_HEADERS(heim_err.h)
if test $ac_cv_header_heim_err_h = yes ; then
krb5_impl=heimdal
fi
if test "x$krb5_impl" = "xmit"; then
AC_CHECK_LIB(k5crypto, main,
[krb5crypto=k5crypto],
[krb5crypto=crypto])
AC_CHECK_LIB(krb5, main,
[have_krb5=yes
kerberos_lib="-lkrb5 -l$krb5crypto -lcom_err"],
[have_krb5=no],
[-l$krb5crypto -lcom_err])
elif test "x$krb5_impl" = "xheimdal"; then
AC_CHECK_LIB(des, main,
[krb5crypto=des],
[krb5crypto=crypto])
AC_CHECK_LIB(krb5, main,
[have_krb5=yes
kerberos_lib="-lkrb5 -l$krb5crypto -lasn1 -lroken -lcom_err"],
[have_krb5=no],
[-l$krb5crypto -lasn1 -lroken -lcom_err])
AC_DEFINE(HAVE_HEIMDAL_KERBEROS, 1,
[define if you have HEIMDAL Kerberos])
else
have_krb5=no
AC_MSG_WARN([Unrecognized Kerberos5 Implementation])
fi
# reset to original values
CPPFLAGS="$save_CPPFLAGS"
LDFLAGS="$save_LDFLAGS"
if test -n "$kerberos_incdir" ; then
kerberos_inc="-I$kerberos_incdir"
fi
if test -n "$kerberos_libdir" ; then
kerberos_lib="-L$kerberos_libdir $kerberos_lib"
fi
fi
dnl at this point kerberos_lib and kerberos_inc should be set
if test -n "$with_kerberos" ; then
if test "x$have_krb5" = "xyes" ; then
AC_DEFINE(HAVE_KRB5, 1,
[define if you have Kerberos V])
else
AC_MSG_ERROR([Required Kerberos 5 support not available])
fi
dnl look for the wonderfully time saving function krb5_cc_new_unique
save_LIBS="$LIBS"
LIBS="$kerberos_lib"
save_CPPFLAGS="$CPPFLAGS"
CPPFLAGS="$kerberos_inc $CPPFLAGS"
AC_CHECK_FUNCS([krb5_cc_new_unique])
LIBS="$save_LIBS"
CPPFLAGS="$save_CPPFLAGS"
fi
AC_SUBST(kerberos_inc)
AC_SUBST(kerberos_lib)
AC_SUBST(kerberos_libdir)
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