AC_INIT([ClamCour],0.3.8,tony@becrux.com)
AC_COPYRIGHT([Copyright 2006 BeCrux])
AC_CANONICAL_HOST
AC_CONFIG_SRCDIR(src/main.cpp)
AM_INIT_AUTOMAKE(clamcour,0.3.8)
AM_CONFIG_HEADER(config.h)
AC_PREFIX_DEFAULT(/usr/lib/courier)
AM_SANITY_CHECK
AM_MAINTAINER_MODE

MAJOR_VERSION=0
MINOR_VERSION=3
RELEASE_VERSION=8
VERSION="$MAJOR_VERSION.$MINOR_VERSION.$RELEASE_VERSION"

dnl checks for programs needed to build.
CXXFLAGS="-pedantic"

AC_PROG_CXX
AC_ISC_POSIX
AC_LANG_CPLUSPLUS
AC_PROG_INSTALL

AC_PROG_MAKE_SET
AC_PROG_LN_S
AC_PROG_AWK

AM_PROG_LIBTOOL

dnl debug check
AC_ARG_ENABLE(debug,
  [  --enable-debug          enable debug (default disabled)],
  [ CXXFLAGS="$CXXFLAGS -g" ],
  [ CXXFLAGS="$CXXFLAGS -pipe -Wall -O3" ])

dnl path check
AC_ARG_WITH(clamav-config,[  --with-clamav-config=DIR       clamav-config binary path],[clamavconfigdir=$withval],[clamavconfigdir=""])
AC_ARG_WITH(courier-config,[  --with-courier-config=DIR      courier-config binary path],[courierconfigdir=$withval],[courierconfigdir=""])
AC_ARG_WITH(bz2-dir,[  --with-bz2=DIR                 bzip2 compression support],[bz2dir=$withval],[bz2dir=""])
AC_ARG_WITH(gz-dir,[  --with-zlib=DIR                zlib compression support],[zlibdir=$withval],[zlibdir=""])

dnl checking mkdir -p
AC_MSG_CHECKING([whether mkdir accepts -p])
if (mkdir -p config.tmpdir/p && mkdir -p config.tmpdir/p 2>&1) > /dev/null; then
    AC_MSG_RESULT(yes)
    MKDIR="mkdir -p"
else
    AC_MSG_RESULT(no)
    MKDIR=mkdir
fi
rm -rf config.tmpdir

dnl check for POSIX Threads library
echo -e $'\n'$'\n'POSIX Threads
ACX_PTHREAD([
  LDFLAGS="$LDFLAGS $PTHREAD_LIBS"
  CXXFLAGS="$CXXFLAGS $PTHREAD_CFLAGS"
])
AC_CHECK_HEADERS(pthread.h)
AC_CHECK_FUNCS(pthread_create)

dnl I/O functions
echo -e $'\n'$'\n'I/O functions
AC_HEADER_STDC
AC_HEADER_STAT
AC_CHECK_HEADERS(stdio.h)
AC_CHECK_HEADERS(sys/select.h)
AC_CHECK_FUNCS(close unlink fopen fscanf fprintf fclose fgets fread fwrite ferror rename sprintf putenv chmod open read write popen pclose mkfifo umask stat access select,[have_io_funcs=yes],AC_MSG_ERROR([required function missing]))
AC_CHECK_FUNCS(fsync fdatasync)

dnl Signal functions
echo -e $'\n'$'\n'Signal functions
AC_HEADER_STDC
AC_HEADER_STAT
AC_CHECK_HEADERS(signal.h)
AC_CHECK_FUNCS(sigemptyset sigaddset sigwait,[have_sig_funcs=yes],AC_MSG_ERROR([required function missing]))

dnl string/char functions
echo -e $'\n'$'\n'String functions
AC_CHECK_HEADERS(string.h)
AC_CHECK_HEADERS(ctype.h)
AC_CHECK_FUNCS(strcpy strlen strcat memset strcmp strncmp toupper,[have_str_funcs=yes],AC_MSG_ERROR([required function missing]))

dnl socket functions
echo -e $'\n'$'\n'Socket functions
AC_CHECK_HEADERS(sys/socket.h sys/un.h)
ETR_SOCKET_NSL
LDFLAGS="$LDFLAGS $ETR_SOCKET_LIBS"
AC_CHECK_FUNCS(socket bind listen accept shutdown,[have_net_funcs=yes],AC_MSG_ERROR([required function missing]))
TYPE_SOCKLEN_T
AC_CHECK_MEMBER([struct sockaddr_un.sun_len],AC_DEFINE([HAVE_SOCKADDR_LEN],[1],[sun_len member in struct sockaddr_un present]),,[
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>])

dnl log functions
echo -e $'\n'$'\n'System log functions
AC_CHECK_HEADERS(syslog.h)
AC_CHECK_FUNCS(openlog syslog closelog,[have_log_funcs=yes],AC_MSG_ERROR([required function missing]))

dnl other functions
echo -e $'\n'$'\n'Time functions
AC_HEADER_TIME
AC_STRUCT_TM
AC_CHECK_FUNCS(localtime_r strftime,[have_time_funcs=yes],AC_MSG_ERROR([required function missing]))
AC_CHECK_HEADERS(unistd.h)
AC_CHECK_HEADERS(limits.h)
AC_CHECK_FUNCS(sysconf,[have_sysconf_func=yes],[have_sysconf_func=no])
AC_TRY_RUN([
#include <unistd.h>
#include <limits.h>

int main(void)
{
  int p = _SC_LINE_MAX;

  return 0;
}],
AC_DEFINE_UNQUOTED(BUF_LEN,sysconf(_SC_LINE_MAX),POSIX buffer length),
AC_DEFINE_UNQUOTED(BUF_LEN,2048,my buffer length))
AC_TRY_RUN([
#include <unistd.h>
#include <limits.h>

int main(void)
{
  int p = _SC_CLK_TCK;
  return 0;
}],
AC_DEFINE_UNQUOTED(TICK_LEN,sysconf(_SC_CLK_TCK),POSIX clock duration),
AC_DEFINE_UNQUOTED(TICK_LEN,0,my clock duration))


dnl bzip2 section
echo -e $'\n'$'\n'BZip2 support

if test "$bz2dir" != "" ; then
  CXXFLAGS="$CXXFLAGS $bz2dir/include"
  CXXCPP="$CXXCPP $CXXFLAGS"
  $LDFLAGS="$LDFLAGS $bz2dir/lib"
fi
AC_CHECK_HEADERS(bzlib.h)
AC_CHECK_LIB(bz2,BZ2_bzWriteOpen,[have_bz2=yes],[have_bz2=no],$LDFLAGS)

if test "$have_bz2" = "yes" ; then
  AC_DEFINE(HAVE_BZ2,1,BZ2 library present)
fi

dnl gzip section
echo -e $'\n'$'\n'GZip support

if test "$zlibdir" != "" ; then
  CXXFLAGS="$CXXFLAGS $zlibdir/include"
  CXXCPP="$CXXCPP $CXXFLAGS"
  $LDFLAGS="$LDFLAGS $zlibdir/lib"
fi
AC_CHECK_HEADERS(zlib.h)
AC_CHECK_LIB(z,gzopen,[have_zlib=yes],[have_zlib=no],$LDFLAGS)

if test "$have_zlib" = "yes" ; then
  AC_DEFINE(HAVE_ZLIB,1,ZLIB library present)
fi

dnl clamav section
echo -e $'\n'$'\n'LibClamAV support

if test "$clamavconfigdir" != "" ; then
  AC_CHECK_FILE(/$clamavconfigdir/clamav-config,clamavconfigdir="$clamavconfigdir/clamav-config",AC_MSG_ERROR([Cannot find clamav-config]))
else
  AC_CHECK_FILE(/usr/bin/clamav-config,clamavconfigdir="/usr/bin/clamav-config",
   AC_CHECK_FILE(/usr/local/bin/courier-config,clamavconfigdir="/usr/local/bin/clamav-config",
    AC_CHECK_FILE(/usr/clamav/bin/clamav-config,clamavconfigdir="/usr/clamav/bin/clamav-config",
     AC_CHECK_FILE(/usr/local/clamav/bin/clamav-config,clamavconfigdir="/usr/local/clamav/bin/clamav-config",""))))
fi

if test "$clamavconfigdir" != "" ; then
  lclam_cflags="-I`$clamavconfigdir --prefix`/include"
  lclam_lflags=`$clamavconfigdir --libs`
  CXXFLAGS="$CXXFLAGS $lclam_cflags"
  CXXCPP="$CXXCPP $CXXFLAGS"
  LDFLAGS="$LDFLAGS $lclam_lflags -lclamav"
  LIBS="$LDFLAGS"
  AC_CHECK_HEADERS(clamav.h)
  AC_CHECK_LIB(clamav,cl_retdbdir,[have_clamav_funcs=yes],AC_MSG_ERROR([Could not link to libclamav.]),$LDFLAGS)
else
  AC_MSG_ERROR([Cannot find clamav-config])
fi


dnl courier-config section
echo -e $'\n'$'\n'Courier configuration
if test "$courierconfigdir" != "" ; then
  AC_CHECK_FILE($courierconfigdir/courier-config,courierconfigdir="$courierconfigdir/courier-config",AC_MSG_ERROR([Cannot find courier-config]))
else
  AC_CHECK_FILE(/usr/bin/courier-config,courierconfigdir="/usr/bin/courier-config",
   AC_CHECK_FILE(/usr/local/bin/courier-config,courierconfigdir="/usr/local/bin/courier-config",
    AC_CHECK_FILE(/usr/lib/courier/bin/courier-config,courierconfigdir="/usr/lib/courier/bin/courier-config",
     AC_CHECK_FILE(/usr/local/lib/courier/bin/courier-config,courierconfigdir="/usr/local/lib/courier/bin/courier-config",""))))
fi

if test "$courierconfigdir" != "" ; then
  user="`$courierconfigdir | $AWK -F '=' '/^mailuser=.*$/ {print $2}'`"
  group="`$courierconfigdir | $AWK -F '=' '/^mailgroup=.*$/ {print $2}'`"
  socketdir="`$courierconfigdir | $AWK -F '=' '/^localstatedir=.*$/ {print $2}'`/allfilters"
  filterdir="`$courierconfigdir | $AWK -F '=' '/^libexecdir=.*$/ {print $2}'`/filters"
  clamctempdir="`$courierconfigdir | $AWK -F '=' '/^localstatedir=.*$/ {print $2}'`/tmp"
  clamvardir="`$courierconfigdir | $AWK -F '=' '/^localstatedir=.*$/ {print $2}'`"
  couretcdir="`$courierconfigdir | $AWK -F '=' '/^sysconfdir=.*$/ {print $2}'`"
  courmandir="`$courierconfigdir | $AWK -F '=' '/^prefix=.*$/ {print $2}'`/man"
  courbindir="`$courierconfigdir | $AWK -F '=' '/^bindir=.*$/ {print $2}'`"
  mailuser="`$courierconfigdir | $AWK -F '=' '/^mailuser=.*$/ {print $2}'`"
  mailgroup="`$courierconfigdir | $AWK -F '=' '/^mailgroup=.*$/ {print $2}'`"
else
  AC_MSG_ERROR([Cannot find courier-config])
fi

AC_CHECK_PROG(sendmail,sendmail,yes,no,$courbindir)
if test "$sendmail" == "no"; then
  AC_MSG_ERROR([Cannot find sendmail Courier binary])
fi

AC_DEFINE_UNQUOTED(QUARANTINE_FILE,"$couretcdir/clamcour/quarantine",ClamCour quarantine configuration file)
AC_DEFINE_UNQUOTED(MESSAGE_FILE,"$couretcdir/clamcour/virmessage",ClamCour virus message file)
AC_DEFINE_UNQUOTED(BZ2_FILE,"$couretcdir/clamcour/bz2_compression",ClamCour BZip2 compression file)
AC_DEFINE_UNQUOTED(GZ_FILE,"$couretcdir/clamcour/gz_compression",ClamCour GZip compression file)
AC_DEFINE_UNQUOTED(SIZE_LIMIT_FILE,"$couretcdir/clamcour/sizelimit",ClamCour BZip2 compression file)
AC_DEFINE_UNQUOTED(PID_FILE,"$clamctempdir/clamcour.pid",ClamCour PID file)
AC_DEFINE_UNQUOTED(COURIER_FILTER_PATH,"$socketdir",Courier filter dir)
AC_DEFINE_UNQUOTED(CLAMCOUR_CMD_FIFO,"/tmp/clamcour.fifo",ClamCour command fifo)
AC_DEFINE_UNQUOTED(CLAM_TMP_VAR,"TMPDIR=$clamctempdir",ClamAV temporary dir)
AC_DEFINE_UNQUOTED(COURIER_SENDMAIL,"$courbindir/sendmail",Courier sendmail binary)
AC_DEFINE_UNQUOTED(MAX_QUEUE_SIZE,50,Courier message queue dimension)

CXXFLAGS="$CXXFLAGS"

INSTALL="$INSTALL -o $user -g $group"
bindir="$filterdir"
mandir="$courmandir"
sysconfdir="$couretcdir/clamcour"

AC_SUBST(couretcdir)
AC_SUBST(mailuser)
AC_SUBST(mailgroup)

dnl =================================================================
dnl Always defined
dnl =================================================================

AC_DEFINE(__MT__,1,
  [Always define this, for thread safety on some platforms.])

AC_OUTPUT(Makefile src/Makefile)