#                                               -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.
#
# Portions copyright 2003 Chris Kuethe.
# Copyright 2003 Richard Laager.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
# 1. Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
# 2. Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in the
#    documentation and/or other materials provided with the distribution.
# 3. The name of the author may not be used to endorse or promote
#    products derived from this software without specific prior written
#    permission.
#
# THIS SOFTWARE IS PROVIDED BY RICHARD LAAGER ``AS IS'' AND ANY EXPRESS
# OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
# DISCLAIMED.  IN NO EVENT SHALL MARC HOROWITZ BE LIABLE FOR ANY DIRECT,
# INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
# (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
# SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
# HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
# STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING
# IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
#

AC_PREREQ(2.57)
AC_INIT(pks, 0.9.6+cvs, rlaager@users.sourceforge.net)
AC_CONFIG_SRCDIR(armor.c)
AC_CONFIG_HEADER(config.h)

# Checks for programs.
AC_PROG_AWK
AC_PROG_CC
AC_PROG_INSTALL
AC_PATH_PROG(CAT, cat, /bin/cat,
  $PATH:/sbin:/bin:/usr/sbin:/usr/bin)
AC_PATH_PROG(DATE, date, /usr/bin/date,
  $PATH:/sbin:/bin:/usr/sbin:/usr/bin)
AC_PATH_PROG(MV, mv, /bin/mv,
  $PATH:/sbin:/bin:/usr/sbin:/usr/bin)
AC_PATH_PROG(SENDMAIL, sendmail, /usr/lib/sendmail,
  $PATH:/usr/lib:/usr/sbin:/usr/etc:/etc)
AC_PATH_PROG(TRUE, true, /bin/true,
  $PATH:/sbin:/bin:/usr/sbin:/usr/bin)

# Support Debugging Mode
AC_ARG_ENABLE(
	debug,
	[  --enable-debug          Enable Debugging Mode],
	[
		AC_DEFINE(DEBUG)
		AC_MSG_RESULT(Debugging Mode Activated)
                cflags="$cflags -g"
        ]
)

# Support Compiler Optimizations
AC_ARG_ENABLE(
	optimizations,
	[  --enable-optimizations  Enable Compiler Optimizations],
	[
		AC_MSG_RESULT(Compiler Optimizations Enabled)
                cflags="$cflags -O2"
        ]
)

# Checks for libraries.
dnl Checks for Berkeley DB
AC_MSG_CHECKING(for Berkeley DB)
AC_ARG_WITH(db,
[  --with-db=DIR           Use Berkeley DB in DIR],
[DBINC=NO
  DBLIB=NO
  DBHDR=NO
  S=1
  case "$withval" in
  yes|no)
      AC_ERROR(Berkeley DB was not found. Please check your installation or use --with-db=PATH)
     ;;
  *)
  AC_MSG_RESULT($withval)
  if test x${withval} = x ; then
          withval=/tmp
  fi
  if test $S -a -r ${withval}/build_unix/db4.h -a \
          -r "`ls ${withval}/build_unix/.libs/libdb-4.*.a 2>/dev/null | tail -1`"; then
          DBINC=-I`echo ${withval}/build_unix/`
          DBLIB=`ls ${withval}/build_unix/.libs/libdb-4.*.a 2>/dev/null | tail -1`
          DBHDR="db4.h"
          grep 'DB_VERSION_MAJOR	4$' ${withval}/build_unix/db4.h >/dev/null 2>&1
          S=$?
  fi
  if test $S -a -r ${withval}/build_unix/db.h -a \
          -r "`ls ${withval}/build_unix/.libs/libdb-4.*.a 2>/dev/null | tail -1`"; then
          DBINC=-I`echo ${withval}/build_unix`
          DBLIB=`ls ${withval}/build_unix/.libs/libdb-4.*.a 2>/dev/null | tail -1`
          DBHDR="db.h"
          grep 'DB_VERSION_MAJOR	4$' ${withval}/build_unix/db.h >/dev/null 2>&1
          S=$?
  fi
  if test $S -a -r ${withval}/include/db4/db.h -a \
          -r ${withval}/lib/db4/libdb.a ; then
          DBINC="-I${withval}/include/db4"
          DBLIB="-L${withval}/lib/db4 -ldb"
          DBHDR="db.h"
          grep 'DB_VERSION_MAJOR	4$' ${withval}/include/db4/db.h >/dev/null 2>&1
          S=$?
  fi
  if test $S -a -r ${withval}/include/db4.h -a \
          -r ${withval}/lib/libdb.a ; then
          DBINC="-I${withval}/include"
          DBLIB="-L${withval}/lib -ldb"
          DBHDR="db4.h"
          grep 'DB_VERSION_MAJOR	4$' ${withval}/include/db4.h >/dev/null 2>&1
          S=$?
  fi
  if test $S -a -r ${withval}/include/db.h -a \
          -r ${withval}/lib/libdb.a ; then
          DBINC="-I${withval}/include"
          DBLIB="-L${withval}/lib -ldb"
          DBHDR="db.h"
          grep 'DB_VERSION_MAJOR	4$' ${withval}/include/db.h >/dev/null 2>&1
          S=$?
  fi
  if test $S -eq 1 ; then
      AC_ERROR(Berkeley DB was not found. Please check your installation or use --with-db=DIR)
  fi
  AC_MSG_RESULT(yes)
  esac ],
[DBINC=NO
  DBLIB=NO
  DBHDR=NO
  S=1

  if test $S -a -r /usr/local/include/db4.h -a \
          -r /usr/local/lib/libdb.a ; then
          DBINC="-I/usr/local/include"
          DBLIB="-L/usr/local/lib -ldb"
          DBHDR="db4.h"
          grep 'DB_VERSION_MAJOR	4$' /usr/local/include/db4.h >/dev/null 2>&1
          S=$?
  fi
  if test $S -a -r /usr/local/include/db.h -a \
          -r /usr/local/lib/libdb.a ; then
          DBINC="-I/usr/local/include"
          DBLIB="-L/usr/local/lib -ldb"
          DBHDR="db.h"
          grep 'DB_VERSION_MAJOR	4$' /usr/local/include/db.h >/dev/null 2>&1
          S=$?
  fi
  if test $S -a -r /usr/include/db4.h -a \
          -r /usr/lib/libdb.a ; then
          DBINC=""
          DBLIB="-L/usr/lib -ldb"
          DBHDR="db4.h"
          grep 'DB_VERSION_MAJOR	4$' /usr/include/db4.h >/dev/null 2>&1
          S=$?
  fi
  if test $S -a -r /usr/include/db.h -a \
          -r /usr/lib/libdb.a ; then
          DBINC=""
          DBLIB="-L/usr/lib -ldb"
          DBHDR="db.h"
          grep 'DB_VERSION_MAJOR	4$' /usr/include/db.h >/dev/null 2>&1
          S=$?
  fi
  DIR=`ls -d ../db-4.*/. 2>/dev/null | tail -1`
  if test $S -a -r ${DIR}/build_unix/db4.h -a \
          -r "`ls ${DIR}/build_unix/.libs/libdb-4.*.a 2>/dev/null | tail -1`"; then
          DBINC=-I`echo ${DIR}/build_unix/`
          DBLIB=`ls ${DIR}/build_unix/.libs/libdb-4.*.a 2>/dev/null | tail -1`
          DBHDR="db4.h"
          grep 'DB_VERSION_MAJOR	4$' ${DIR}/build_unix/db4.h >/dev/null 2>&1
          S=$?
  fi
  if test $S -a -r ${DIR}/build_unix/db.h -a \
          -r "`ls ${DIR}/build_unix/.libs/libdb-4.*.a 2>/dev/null | tail -1`"; then
          DBINC=-I`echo ${DIR}/build_unix`
          DBLIB=`ls ${DIR}/build_unix/.libs/libdb-4.*.a 2>/dev/null | tail -1`
          DBHDR="db.h"
          grep 'DB_VERSION_MAJOR	4$' ${DIR}/build_unix/db.h >/dev/null 2>&1
          S=$?
  fi

  if test $S -eq 1 ; then
      AC_ERROR(Berkeley DB was not found. Please check your installation or use --with-db=DIR)
  fi
  AC_MSG_RESULT(yes) ]
)
AC_SUBST(DBINC)
AC_SUBST(DBLIB)
AC_SUBST(DBHDR)

dnl Checks for IPv6
AC_MSG_CHECKING(if IPv6 support is enabled)
AC_ARG_WITH(ipv6,
[  --with-ipv6             Enable IPv6 Support],
[AC_DEFINE(WITH_IPV6, 1, [Enable IPv6 Support])
AC_MSG_RESULT(yes)],
AC_MSG_RESULT(no)
)

dnl Checks for TCP Wrappers
AC_ARG_WITH(libwrap,
[  --with-libwrap          Use libwrap (TCP Wrappers)],
AC_CHECK_LIB(wrap, main))

dnl Checks for OpenSSL
AC_MSG_CHECKING(for OpenSSL)
AC_ARG_WITH(openssl,
[  --with-openssl=DIR      Use OpenSSL in DIR],
[OPENSSLINC=NO
  OPENSSLLIB=NO
  S=1
  case "$withval" in
  yes|no)
      AC_ERROR(OpenSSL was not found. Please check your installation or use --with-openssl=PATH)
     ;;
  *)
  AC_MSG_RESULT($withval)
  if test x${withval} = x ; then
          withval=/tmp
  fi
  if test $S -a -r ${withval}/include/openssl/ssl.h -a \
          -r ${withval}/libcrypto.a ; then
          OPENSSLINC="-I${withval}/include"
          OPENSSLLIB="${withval}/libcrypto.a"
          S=0
  fi
  if test $S -a -r ${withval}/include/openssl/ssl.h -a \
          -r ${withval}/lib/libcrypto.a ; then
          OPENSSLINC="-I${withval}/include"
          OPENSSLLIB="-L${withval}/lib -lcrypto"
          S=0
  fi
  if test $S -eq 1 ; then
      AC_ERROR(OpenSSL was not found. Please check your installation or use --with-openssl=DIR)
  fi
  AC_MSG_RESULT(yes)
  esac ],
[OPENSSLINC=NO
  OPENSSLLIB=NO
  OPENSSLHDR=NO
  S=1

  if test $S -a -r /usr/local/ssl/include/openssl/ssl.h -a \
          -r /usr/local/ssl/lib/libcrypto.a ; then
          OPENSSLINC="-I/usr/local/ssl/include"
          OPENSSLLIB="-L/usr/local/ssl/lib -lcrypto"
          S=0
  fi
  if test $S -a -r /usr/local/include/openssl/ssl.h -a \
          -r /usr/local/lib/libcrypto.a ; then
          OPENSSLINC="-I/usr/local/include"
          OPENSSLLIB="-L/usr/local/lib -lcrypto"
          S=0
  fi
  if test $S -a -r /usr/include/openssl/ssl.h -a \
          -r /usr/lib/libcrypto.a ; then
          OPENSSLINC=""
          OPENSSLLIB="-L/usr/lib -lcrypto"
          S=0
  fi
  DIR=`ls -d ../openssl-*.*.*/. 2>/dev/null | tail -1`
  if test $S -a -r ${DIR}/include/openssl/ssl.h -a \
          -r "`ls ${DIR}/libcrypto.a 2>/dev/null | tail -1`"; then
          OPENSSLINC=-I`echo ${DIR}/include`
          OPENSSLLIB=`ls ${DIR}/libcrypto.a 2>/dev/null | tail -1`
          S=0
  fi

  if test $S -eq 1 ; then
      AC_ERROR(OpenSSL was not found. Please check your installation or use --with-openssl=DIR)
  fi
  AC_MSG_RESULT(yes) ]
)
AC_SUBST(OPENSSLINC)
AC_SUBST(OPENSSLLIB)

# Checks for header files.
AC_HEADER_STDC
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(arpa/inet.h)
AC_CHECK_HEADERS(bstring.h)
AC_CHECK_HEADERS(ctype.h)
AC_CHECK_HEADERS(errno.h)
AC_CHECK_HEADERS(fcntl.h)
AC_CHECK_HEADERS(netdb.h)
AC_CHECK_HEADERS(netinet/in.h)
AC_CHECK_HEADERS(signal.h)
AC_CHECK_HEADERS(stdio.h)
AC_CHECK_HEADERS(stdlib.h)
AC_CHECK_HEADERS(string.h)
AC_CHECK_HEADERS(sys/mman.h)
AC_CHECK_HEADERS(sys/param.h)
AC_CHECK_HEADERS(sys/select.h)
AC_CHECK_HEADERS(sys/stat.h)
AC_CHECK_HEADERS(sys/socket.h)
AC_CHECK_HEADERS(sys/time.h)
AC_CHECK_HEADERS(sys/types.h)
AC_CHECK_HEADERS(sys/un.h)
AC_CHECK_HEADERS(sys/wait.h)
AC_CHECK_HEADERS(syslog.h)
AC_CHECK_HEADERS(time.h)
AC_CHECK_HEADERS(unistd.h)

# Checks for typedefs, structures, and compiler characteristics.
case "$ac_cv_prog_gcc" in
	yes)
		cflags="$cflags -Wall -pedantic";;
esac
AC_SUBST(cflags)
AC_C_CONST
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_HEADER_TIME
AC_CACHE_CHECK("for socklen_t", pks_cv_socklen_t,
AC_TRY_COMPILE([#include <sys/types.h>
#include <sys/socket.h>],
[socklen_t socklen;
socklen = sizeof(struct sockaddr);],
pks_cv_socklen_t=yes, pks_cv_socklen_t=no))

if test "$pks_cv_socklen_t" = "yes" ; then
	AC_DEFINE(HAVE_SOCKLEN_T)
fi
AC_STRUCT_TM

# Checks for library functions.

# If we can't find connect, try looking in -lsocket and -lnsl.  The
# Irix 5 libc.so has connect and gethostbyname, but Irix 5 also has
# libsocket.so which has a bad implementation of gethostbyname (it
# only looks in /etc/hosts), so we only look for -lsocket if we need
# it.
AC_CHECK_FUNCS([connect], :, [AC_CHECK_LIB(socket, socket)
			   AC_CHECK_LIB(nsl, gethostbyname)])
AC_CHECK_FUNCS([dup2],,AC_MSG_ERROR(dup2 missing))
AC_FUNC_FORK
AC_CHECK_FUNCS([gethostbyaddr],,AC_MSG_ERROR(gethostbyaddr missing))
AC_CHECK_FUNCS([inet_ntoa],,AC_MSG_ERROR(inet_ntoa missing))
AC_CHECK_FUNCS([madvise])
AC_FUNC_MALLOC
AC_CHECK_FUNCS([memchr],,AC_MSG_ERROR(memchr missing))
AC_FUNC_MEMCMP
AC_CHECK_FUNCS([memmove],,AC_MSG_ERROR(memmove missing))
AC_CHECK_FUNCS([memset],,AC_MSG_ERROR(memset missing))
AC_FUNC_MMAP
AC_CHECK_FUNCS([munmap],,AC_MSG_ERROR(munmap missing))
AC_FUNC_REALLOC
AC_CHECK_FUNCS([select],,AC_MSG_ERROR(select missing))
AC_FUNC_SELECT_ARGTYPES
AC_CHECK_FUNCS([socket],,AC_MSG_ERROR(socket missing))
AC_CHECK_FUNCS([strchr],,AC_MSG_ERROR(strchr missing))

AC_CONFIG_FILES(Makefile)
AC_CONFIG_FILES(db_selector.h)
AC_OUTPUT(mkpksdconf pks-mail.sh pks-queue-run.sh)