dnl Process this -*-m4-*- file with autoconf to produce a configure script.

dnl Disable caching
define([AC_CACHE_LOAD],)
define([AC_CACHE_SAVE],)

AC_INIT(src/nsca.c)
AC_CONFIG_HEADER(include/config.h)
AC_PREFIX_DEFAULT(/usr/local/nagios)

PKG_NAME=nsca
PKG_VERSION="2.7.2"
PKG_HOME_URL="http://www.nagios.org/"
PKG_REL_DATE="07-03-2007"

dnl Figure out how to invoke "install" and what install options to use.
AC_PROG_INSTALL
AC_SUBST(INSTALL)

dnl What OS are we running?
AC_CANONICAL_HOST

dnl Checks for programs.
AC_PROG_CC
AC_PROG_MAKE_SET

dnl Checks for header files.
AC_HEADER_STDC
AC_HEADER_TIME
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(db.h ctype.h errno.h fcntl.h grp.h inttypes.h netdb.h pwd.h regex.h signal.h stdint.h strings.h string.h syslog.h tcpd.h unistd.h arpa/inet.h netinet/in.h sys/config.h sys/int_types.h sys/poll.h sys/types.h sys/time.h sys/resource.h sys/socket.h sys/stat.h sys/wait.h)

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_STRUCT_TM
AC_TYPE_MODE_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_TYPE_SIGNAL
AC_TYPE_GETGROUPS

dnl Check lengths for later tests of u_int32_t and int32_t
AC_CHECK_SIZEOF(int)
AC_CHECK_SIZEOF(short)
AC_CHECK_SIZEOF(long)

dnl Define u_int32_t if we don't have it already (Solaris, etc.)
AC_CHECK_TYPE(uint32_t,unsigned int)
AC_CHECK_TYPE(u_int32_t,unsigned int)
if test "$ac_cv_type_u_int32_t" = no ; then
	if test "$ac_cv_type_u_int32_t" = yes ; then
		AC_DEFINE(U_INT32_T_IS_UINT32_T)
	else
		if test "$ac_cv_sizeof_int" = 4 ; then
			AC_DEFINE(U_INT32_T_IS_UINT)
		else
			if test "$ac_cv_sizeof_long" = 4 ; then
				AC_DEFINE(U_INT32_T_IS_ULONG)
			else
				if test "$ac_cv_sizeof_short" = 4 ; then
					AC_DEFINE(U_INT32_T_IS_USHORT)
				fi
			fi
		fi
	fi
fi

dnl Define int32_t if we don't have it already
AC_CHECK_TYPE(int32_t,int)
if test "$ac_cv_type_int32_t" = no ; then
	if test "$ac_cv_sizeof_int" = 4 ; then
		AC_DEFINE(INT32_T_IS_UINT)
	else
		if test "$ac_cv_sizeof_long" = 4 ; then
			AC_DEFINE(INT32_T_IS_ULONG)
		else
			if test "$ac_cv_sizeof_short" = 4 ; then
				AC_DEFINE(INT32_T_IS_USHORT)
			fi
		fi
	fi
fi

dnl Checks for library functions.
AC_CHECK_LIB(nsl,main,SOCKETLIBS="$SOCKETLIBS -lnsl")
AC_CHECK_LIB(socket,socket,SOCKETLIBS="$SOCKETLIBS -lsocket")
AC_SUBST(SOCKETLIBS)
AC_CHECK_LIB(wrap,main,[
	LIBWRAPLIBS="$LIBWRAPLIBS -lwrap"
	AC_DEFINE(HAVE_LIBWRAP)
	])
AC_SUBST(LIBWRAPLIBS)
AC_CHECK_FUNCS(strdup strstr strtoul)

dnl socklen_t check - from curl
AC_CHECK_TYPE([socklen_t], ,[
       AC_MSG_CHECKING([for socklen_t equivalent])
       AC_CACHE_VAL([curl_cv_socklen_t_equiv],
       [
          # Systems have either "struct sockaddr *" or
          # "void *" as the second argument to getpeername
          curl_cv_socklen_t_equiv=
          for arg2 in "struct sockaddr" void; do
             for t in int size_t unsigned long "unsigned long"; do
                AC_TRY_COMPILE([
                   #ifdef HAVE_SYS_TYPES_H
                   #include <sys/types.h>
                   #endif 
                   #ifdef HAVE_SYS_SOCKET_H
                   #include <sys/socket.h>
                   #endif
                   
                   int getpeername (int, $arg2 *, $t *);
                ],[
                   $t len;
                   getpeername(0,0,&len);
                ],[
                   curl_cv_socklen_t_equiv="$t"
                   break
                ])
             done
          done
 
          if test "x$curl_cv_socklen_t_equiv" = x; then
             AC_MSG_ERROR([Cannot find a type to use in place of socklen_t])
          fi
       ])
       AC_MSG_RESULT($curl_cv_socklen_t_equiv)
       AC_DEFINE_UNQUOTED(socklen_t, $curl_cv_socklen_t_equiv,
                         [type to use in place of socklen_t if not defined])],
       [#include <sys/types.h>
#include <sys/socket.h>])

AC_MSG_CHECKING(for type of socket size)
AC_TRY_COMPILE([#include <stdlib.h>
#include <sys/types.h>
#include <sys/socket.h>
],
[int a = send(1, (const void *)0, (size_t *) 0, (int *) 0);],
[AC_DEFINE(SOCKET_SIZE_TYPE, size_t) AC_MSG_RESULT(size_t)],
[AC_DEFINE(SOCKET_SIZE_TYPE, int) AC_MSG_RESULT(int)])

dnl Optional mcrypt library and include paths
AC_ARG_WITH(mcrypt-lib,--with-mcrypt-lib=DIR sets location of the mcrypt client library,[
	LDFLAGS="${LDFLAGS} -L${withval}"
	LD_RUN_PATH="${withval}${LD_RUN_PATH:+:}${LD_RUN_PATH}"
	])
AC_ARG_WITH(mcrypt-inc,--with-mcrypt-inc=DIR sets location of the mcrypt client include files,[
	CFLAGS="${CFLAGS} -I${withval}"
	])

dnl Old checks for libmcrypt, no longer needed - 01/17/02 EG
dnl AC_CHECK_LIB(ltdl,main)
dnl AC_CHECK_LIB(mcrypt,mcrypt,MCRYPTLIBFOUND=yep)

dnl Check for mcrypt library
MCRYPTLIBFOUND=yep
AM_PATH_LIBMCRYPT(2.4.11,,MCRYPTLIBFOUND=nope)

dnl added for automatic use of mcrypt stark@suse.de
if test $MCRYPTLIBFOUND = yep; then
	CFLAGS="${CFLAGS} -DHAVE_LIBMCRYPT ${LIBMCRYPT_CFLAGS}"
	LDFLAGS="${LDFLAGS} ${LIBMCRYPT_LIBS}"
fi

dnl Did we find the mcrypt library?
if test x$MCRYPTLIBFOUND = xnope; then
	echo ""
	echo ""
	echo "**************************************************************"
	echo "MCRYPT LIBRARY (libmcrypt) COULD NOT BE LOCATED..."
	echo ""
	echo "The mcrypt library could not be located on your system.  This"
	echo "means that you will NOT be able to use any crypto algorithms"
	echo "in the NSCA client or daemon."
	echo ""
	echo "Read the SECURITY text file for more information on why"
	echo "encryption is important to ensuring that the NSCA daemon is"
	echo "not abused by malicious users."
	echo ""
	echo "You can download libmcrypt from:"
	echo ""
	echo "        http://mcrypt.sourceforge.net/"
	echo ""
	echo ""
	echo "NOTE: After you install the MCRYPT library on your system:"
	echo ""
	echo "      1. Make sure /etc/ld.so.conf has an entry for the"
	echo "         directory in which the MCRYPT library is installed."
	echo "      2. Run 'ldconfig' to update the run-time linker options."
	echo "      3. Run 'make devclean' in the NSCA distribution to clean"
	echo "         out any old references to your previous compile."
	echo "      4. Rerun the configure script."
	echo ""
	echo "**************************************************************"
	echo ""
fi


AC_ARG_WITH(nsca_user,--with-nsca-user=<user> sets user name to run NSCA,nsca_user=$withval,nsca_user=nagios)
AC_ARG_WITH(nsca_grp,--with-nsca-grp=<grp> sets group name to run NSCA,nsca_grp=$withval,nsca_grp=nagios)
AC_ARG_WITH(nsca_port,--with-nsca-port=<port> sets port number for NSCA to listen on,nsca_port=$withval,nsca_port=5667)
AC_SUBST(nsca_user)
AC_SUBST(nsca_grp)
AC_SUBST(nsca_port)
AC_DEFINE_UNQUOTED(DEFAULT_SERVER_PORT,$nsca_port)

AC_PATH_PROG(PERL,perl)
AC_OUTPUT(Makefile subst src/Makefile)

perl subst init-script
perl subst sample-config/nsca.xinetd
perl subst sample-config/nsca.cfg
perl subst sample-config/send_nsca.cfg


dnl Review options
echo ""
echo ""
AC_MSG_RESULT([*** Configuration summary for $PKG_NAME $PKG_VERSION $PKG_REL_DATE ***:])

echo ""
echo " General Options:"
echo " -------------------------"

AC_MSG_RESULT([ NSCA port:  $nsca_port])
AC_MSG_RESULT([ NSCA user:  $nsca_user])
AC_MSG_RESULT([ NSCA group: $nsca_grp])


echo ""
echo ""
echo "Review the options above for accuracy.  If they look okay,"
echo "type 'make all' to compile the NSCA daemon and client."
echo ""