configure.in

dnl  ----- Start off like we always need to
AC_INIT([rootsh],[1.5.4])
AC_CONFIG_SRCDIR(src)

dnl ---- AC_CONFIG_HEADER(src/config.h)
AC_CONFIG_HEADERS([src/config.h])

dnl  ----- Put helper applications in a separate directory
AC_CONFIG_AUX_DIR(config)

dnl -- AM_INIT_AUTOMAKE([foreign])
AM_INIT_AUTOMAKE()
AC_CANONICAL_HOST

syslog=
AC_MSG_CHECKING(for syslog)
AC_ARG_ENABLE(syslog,
[  --enable-syslog[=facility.priority]     enable logging to syslog],
[
  syslog=$enableval
])
if test "x$syslog" = "xno" ; then
  AC_MSG_RESULT(no)
dnl --  AC_DEFINE(LOGTOSYSLOG, 0,[no logging to syslog])
else
  AC_MSG_RESULT(enabled)
  AC_DEFINE(LOGTOSYSLOG, 1,[also logging to syslog])
  AC_MSG_CHECKING(for syslog facility)
  if test "x$syslog" = "xyes" ; then
    syslogfac="local5.notice"
  elif test "x$syslog" = "x" ; then
    syslogfac="local5.notice"
  elif test `expr $syslog : "."` -eq 1 ; then
    syslogfac=$syslog
  else
    AC_MSG_ERROR($syslog is not a valid syslog level)
  fi
  facility=`echo $syslogfac | sed -e 's/\..*$//g'`
  priority=`echo $syslogfac | sed -e 's/^.*\.//g'`
  AC_MSG_RESULT($facility.$priority)
  AC_DEFINE_UNQUOTED(SYSLOGFACILITYNAME, "$facility", [syslog facility as string])
  AC_DEFINE_UNQUOTED(SYSLOGPRIORITYNAME, "$priority", [syslog priority as string])
  facility="LOG_"`echo $facility | tr '[[:lower:]]' '[[:upper:]]'`
  priority="LOG_"`echo $priority | tr '[[:lower:]]' '[[:upper:]]'`
  AC_DEFINE_UNQUOTED(SYSLOGFACILITY, $facility, [syslog facility])
  AC_DEFINE_UNQUOTED(SYSLOGPRIORITY, $priority, [syslog priority])
  AC_MSG_CHECKING(for syslog linenumbering)
  AC_ARG_ENABLE(linenumbering,
  [  --disable-linenumbering               disable numbering of syslog lines],
  [
    linenumbering=$enableval
  ])
  if test "x$linenumbering" = "xno" ; then
    AC_MSG_RESULT(disabled)
  else
    AC_MSG_RESULT(enabled)
    AC_DEFINE(LINECNT, 1,[enable numbering of syslog lines])
  fi
  AC_MSG_CHECKING(for username in syslog)
  AC_ARG_ENABLE(syslog-username,
  [  --disable-syslog-username             disable logging of username in every line],
  [
    syslogusername=$enableval
  ])
  if test "x$syslogusername" = "xno" ; then
    AC_MSG_RESULT(disabled)
  else
    AC_DEFINE(LOGUSERNAMETOSYSLOG, 1,[enable logging of username in every line])
    AC_MSG_RESULT(enabled)
  fi
fi
AM_CONDITIONAL(LOGTOSYSLOG, test "x$syslog" != "xno")


logfile=
AC_MSG_CHECKING(for logfile)
AC_ARG_ENABLE(logfile,
[  --enable-logfile                      enable logging to a file],
[
  logfile=$enableval
])
if test "x$logfile" = "xyes" || test "x$logfile" = "x" ; then
  AC_MSG_RESULT(enabled)
  AC_DEFINE(LOGTOFILE, 1,[enable logging to a file])
  logdir=
  AC_MSG_CHECKING(for logdir)
  AC_ARG_WITH(logdir,
  [  --with-logdir=PATH      specify path where logfiles will be written],
  [
    if test "x$withval" != "x" ; then
      logdir=$withval
    fi
  ])
  if test "x$logdir" = "x" ; then
    case "$host_os" in
      *linux*)
        logdir="/var/log/rootsh"
        ;;
      *solaris*)
        logdir="/var/adm/rootsh"
        ;;
      *hp*)
        logdir="/var/adm/rootsh"
        ;;
      *aix*)
        logdir="/var/adm/rootsh"
        ;;
      *freebsd*)
        logdir="/var/log/rootsh"
        ;;
      *cygwin*)
        logdir="/var/log/rootsh"
        ;;
      *irix*)
        logdir="/var/adm/rootsh"
        ;;
      *apple-darwin*)
        logdir="/var/log/rootsh"
        ;;
      *)
        logdir="/tmp/rootsh"
        ;;
    esac
  fi
  AC_MSG_RESULT($logdir)
  AC_DEFINE_UNQUOTED(LOGDIR,"$logdir",[directory for session protocols])
  maxlogfilesize=
  AC_MSG_CHECKING(for maximum logfile size)
  AC_ARG_WITH(maxlogfilesize,
  [  --with-maxlogfilesize=SIZE  specify maximum size of a logfile in bytes/megabytes/gigabytes],
  [
    if test "x$withval" != "x" ; then
      maxlogfilesize=$withval
    fi
  ])
  if test "x$maxlogfilesize" = "x" ; then
    maxlogfilesize=0
  fi
  changequote(<<, >>)dnl
  byte=`expr $maxlogfilesize : '\([0-9]*\)$'`
  giga=`expr $maxlogfilesize : '\([0-9]*\)[gG]$'`
  mega=`expr $maxlogfilesize : '\([0-9]*\)[mM]$'`
  changequote([, ])dnl
  if test ! -z "$giga" ; then
    maxlogfilesize=`expr $giga \* 1073741824`
  elif test ! -z "$mega" ; then
    maxlogfilesize=`expr $mega \* 1048576`
  elif test ! -z "$byte" ; then
    maxlogfilesize=$byte
  else
    AC_MSG_ERROR(invalid logfile size)
  fi
  AC_MSG_RESULT($maxlogfilesize)
  AC_DEFINE_UNQUOTED(MAXLOGFILESIZE,$maxlogfilesize,[maximum size of a logfile in bytes])
else
  AC_MSG_RESULT(disabled)
dnl --  AC_DEFINE(LOGTOFILE, 0,[no logging to a file])
fi

if test "x$logfile" = "xno" && test "x$syslog" = "xno" ; then
  AC_MSG_ERROR(you MUST log either to a file or syslog or both)
fi

defaultshell=
AC_MSG_CHECKING(for defaultshell)
AC_ARG_WITH(defaultshell,
[  --with-defaultshell=PATH    specify which shell to call if rootsh is used as login shell],
[
  if test "x$withval" != "x" ; then
    defaultshell=$withval
  fi
])
if test "x$defaultshell" = "x" ; then
  case "$host_os" in
    *linux*)
      defaultshell="/bin/bash"
      ;;
    *solaris*)
      defaultshell="/bin/sh"
      ;;
    *hp*)
      defaultshell="/sbin/sh"
      ;;
    *aix*)
      defaultshell="/usr/bin/sh"
      ;;
    *freebsd*)
      defaultshell="/bin/sh"
      ;;
    *cygwin*)
      defaultshell="/bin/bash"
      ;;
    *irix*)
      defaultshell="/bin/bash"
      ;;
    *apple-darwin*)
      defaultshell="/bin/bash"
      ;;
    *)
      defaultshell="/bin/sh"
      ;;
  esac
fi
AC_DEFINE_UNQUOTED(DEFAULTSHELL,"$defaultshell",[default shell])
AC_MSG_RESULT($defaultshell)

if test "x$prefix" = "xNONE" ; then
    prefix="/usr/local"
    prefix_nondefault="NONE"
fi


dnl  ----- Figure out a C compiler to use; set @CC@
AC_PROG_CC(gcc cc)

dnl  ----- enable --enable-static

dnl  ----- Figure out if /etc/shells is in use
etcshells=
AC_MSG_CHECKING(for /etc/shells)
if test -f /etc/shells; then
  AC_MSG_RESULT(found)
  AC_DEFINE(HAS_ETC_SHELLS, 1,[system uses /etc/shells])
else
  AC_MSG_RESULT(not found)
  AC_DEFINE(HAS_ETC_SHELLS, 0,[system doesnt use /etc/shells])
fi


dnl  ----- Figure out if ansi headers are available
AC_HEADER_STDC

dnl  ----- Need to know where libutil is; set @LIBUTIL@
AC_CHECK_LIB(util,  [LIBUTIL=-lutil])
AC_SUBST(LIBUTIL)


dnl  ----- Find header files
AC_HEADER_STDC([])
AC_CHECK_HEADERS([string.h fcntl.h sys/file.h sys/param.h stropts.h])
AC_CHECK_HEADERS([libgen.h])
AC_CHECK_HEADERS([pty.h])
AC_CHECK_HEADERS([util.h])


dnl  ----- Find functions
AC_CHECK_FUNCS(forkpty,, AC_CHECK_LIB(util,forkpty, [AC_DEFINE(HAVE_FORKPTY)] [LIBS="$LIBS -lutil"]))
dnl check for getopt in standard library
adl_FUNC_GETOPT_LONG
dnl check for basename in standard library
adl_FUNC_BASENAME
dnl  ----- Irix doesnt have xxxusershell functions at all. We supply our own.
dnl  ----- Solaris has no own prototypes for xxxusershell
dnl - AC_DEFINE(NEED_GETUSERSHELL_PROTO,,[Solaris for example has no own prototypes for xxxusershell])
AC_CHECK_FUNCS(getusershell, have_getusershell=yes)
if test "$have_getusershell" = yes ; then
  AC_MSG_CHECKING(getusershell prototype)
  AC_EGREP_HEADER(getusershell, unistd.h, have_getusershell_prototype=yes)
  if test "$have_getusershell_prototype" = yes ; then
    AC_MSG_RESULT(yes)
    AC_DEFINE(NEED_GETUSERSHELL_PROTO, 0, [os has its own prototype])
  else
    AC_MSG_RESULT(no)
    AC_DEFINE(NEED_GETUSERSHELL_PROTO, 1, [need my own prototype])
  fi
else
  AC_LIBOBJ(getusershell)
  AC_DEFINE(NEED_GETUSERSHELL_PROTO, 1, [need my own prototype])
fi

AC_CHECK_FUNCS(clearenv,
  AC_DEFINE(HAVE_CLEARENV, 1, [clearenv found]),)


AC_CHECK_FUNCS(sigset, 
  AC_DEFINE(HAVE_SIGSET, 1, [sigset found]),
  AC_DEFINE(HAVE_SIGSET, 0, [sigset not found]))

AC_CHECK_FUNCS(sigaction, 
  AC_DEFINE(HAVE_SIGACTION, 1, [sigaction found]),
  AC_DEFINE(HAVE_SIGACTION, 0, [sigaction not found]))


AC_MSG_CHECKING(whether supplying sigset prototypes is permitted)
AC_DEFINE([SUPPLY_SIGSET_PROTO], [], [Description])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <signal.h>]], [[__sighandler_t sigset (int __sig, __sighandler_t __disp);]])],[AC_MSG_RESULT(yes)
     AC_DEFINE(SUPPLY_SIGSET_PROTO)],[AC_MSG_RESULT(no)])
AC_TYPE_SIGNAL

dnl ----- Look for header that defines select() and fd_set.
AC_MSG_CHECKING([select() and fd_set in sys/select.h and sys/bsdtypes.h])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
#include <stddef.h>
#include <unistd.h>
#include <sys/types.h>]], [[fd_set fds;
select(0, NULL, NULL, NULL, NULL);]])],[xpdf_ok=yes],[xpdf_ok=no])
if test $xpdf_ok = yes; then
  AC_MSG_RESULT([not needed])
else
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
#include <stddef.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/select.h>]], [[fd_set fds;
select(0, NULL, NULL, NULL, NULL);]])],[xpdf_ok=yes],[xpdf_ok=no])
  if test $xpdf_ok = yes; then
    AC_DEFINE(HAVE_SYS_SELECT_H, ,[we have a sys/select.h])
    AC_MSG_RESULT([need sys/select.h])
  else
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
#include <stddef.h>
#include <unistd.h>
#include <sys/types.h>
#include <sys/bsdtypes.h>]], [[fd_set fds;
select(0, NULL, NULL, NULL, NULL);]])],[xpdf_ok=yes],[xpdf_ok=no])
    if test $xpdf_ok = yes; then
      AC_DEFINE(HAVE_SYS_BSDTYPES_H, , [we have a sys/bsdtypes.h])
      AC_MSG_RESULT([need sys/bsdtypes.h])
    else
      AC_MSG_RESULT([problem])
    fi
  fi
fi

dnl ----- Look for header that defines FD_ZERO.
AC_MSG_CHECKING([FD_ZERO and strings.h or bstring.h])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
#include <sys/types.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif]], [[fd_set fds; FD_ZERO(&fds);]])],[xpdf_ok=yes],[xpdf_ok=no])
if test $xpdf_ok = yes; then
  AC_MSG_RESULT([not needed])
else
  AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
#include <sys/types.h>
#include <strings.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif]], [[fd_set fds; FD_ZERO(&fds);]])],[xpdf_ok=yes],[xpdf_ok=no])
  if test $xpdf_ok = yes; then
    AC_DEFINE(HAVE_STRINGS_H)
    AC_MSG_RESULT([need strings.h])
  else
    AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdlib.h>
#include <sys/types.h>
#include <bstring.h>
#ifdef HAVE_SYS_SELECT_H
#include <sys/select.h>
#endif]], [[fd_set fds; FD_ZERO(&fds);]])],[xpdf_ok=yes],[xpdf_ok=no])
    if test $xpdf_ok = yes; then
      AC_DEFINE(HAVE_BSTRING_H, , [we have bstring.h])
      AC_MSG_RESULT([need bstring.h])
    else
      AC_MSG_RESULT([problem])
    fi
  fi
fi



dnl -----  pseudo terminal handling
dnl -----  os        pty master      streams modules
dnl -----  aix       /dev/ptc        - (loads ldterm by default)
dnl -----  hpux      /dev/ptmx       ldterm ptem
dnl -----  solaris   /dev/ptmx       ldterm ptem ttcompat

dnl -----  aix loads module ldterm by default and wants no ptem
dnl -----  ptmx takes precedence
AC_MSG_CHECKING([for master pty])
if test -r /dev/ptc ; then
  if test -r /dev/ptmx ; then
    AC_DEFINE_UNQUOTED(MASTERPTYDEV, "/dev/ptmx", [hp and sun style pty master])
    AC_MSG_RESULT(ptmx)
  else
    AC_DEFINE_UNQUOTED(MASTERPTYDEV, "/dev/ptc", [aix style pty master])
    AC_MSG_RESULT(ptc)
  fi
elif test -r /dev/ptmx ; then
  AC_DEFINE_UNQUOTED(MASTERPTYDEV, "/dev/ptmx", [hp and sun style pty master])
  AC_MSG_RESULT(ptmx)
else
  AC_DEFINE_UNQUOTED(MASTERPTYDEV, "/dev/null", [lets see what happens])
fi

dnl -----  this will succeed on solaris and fail on hpux
AC_MSG_CHECKING(if your system supports the ttcompat streams module)
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdio.h>
#include <fcntl.h>
#include <stropts.h>
main()
{ int line;

  if ( (line = open("/dev/ptmx", O_RDWR)) >= 0 &&
       ioctl(line, I_PUSH, "ttcompat") == 0 )
    exit(0);
  exit(1);
}
]])],[AC_DEFINE(HAVE_TTCOMPAT, 1,
	     "Define if your system supports the ttcompat streams module")
   AC_MSG_RESULT(yes)],[AC_MSG_RESULT(no)],[AC_MSG_RESULT(assuming no)])


AC_ARG_ENABLE(more-warnings,
  [  --disable-more-warnings  Inhibit compiler warnings], set_more_warnings=no)

if test "$GCC" = "yes" -a "$set_more_warnings" != "no"; then
  CFLAGS="$CFLAGS -Wall -Wstrict-prototypes -Wmissing-declarations \
  -Wnested-externs -Wpointer-arith -pedantic"
fi

dnl --- set operating specific defines
dnl --- freebsd is missing IUCLC for c_iflag &= ~(INLCR|IGNCR|ICRNL|IUCLC|IXON);
dnl --- macos is missing O_SYNC for open(file, O_RDWR|O_CREAT|O_EXCL|O_SYNC,
dnl --- we define them as 0, so we can still use them in the code
AC_MSG_CHECKING(operating system)
case "$host_os" in 
  *solaris*)
    AC_MSG_RESULT(solaris)
    AC_DEFINE(SOLARIS_COMPAT,,descr)
    ;;
  *linux*)
    AC_MSG_RESULT(linux)
    AC_DEFINE(LINUX_COMPAT,,descr)
    CFLAGS="$CFLAGS -pedantic -Wstrict-prototypes"
    ;;
  *hp*)
    AC_MSG_RESULT(hp-ux)
    AC_DEFINE(HPUX_COMPAT,,descr)
    ;;
  *aix*)
    AC_MSG_RESULT(aix)
    AC_DEFINE(AIX_COMPAT,,descr)
    AC_DEFINE(_ALL_SOURCE,,descr)
    ;;
  *freebsd*)
    AC_MSG_RESULT(freebsd)
    AC_DEFINE(IUCLC, 0, own replacement for iuclc)
    ;;
  *cygwin*)
    AC_MSG_RESULT(cygwin)
    ;;
  *irix*)
    AC_MSG_RESULT(irix)
    ;;
  *apple-darwin*)
    AC_MSG_RESULT(macosx)
    AC_DEFINE(O_SYNC, 0, own replacement for o_sync)
    ;;
  *)
    AC_MSG_RESULT($host_os)
    ;;
esac

# make all warnings be errors
CFLAGS="$CFLAGS -Werror"

AC_PATH_PROG(SUCMD, su, "/bin/false")
AC_DEFINE_UNQUOTED(SUCMD,"$SUCMD", "path to the su command")

AC_PROG_INSTALL
AC_PROG_MAKE_SET

dnl  --- LIB@&t@OBJS=`echo "$LIB@&t@OBJS" |
dnl  ---             sed 's,\.[[^.]]* ,$U&,g;s,\.[[^.]]*$,$U&,'`
dnl  --- LTLIBOBJS=`echo "$LIB@&t@OBJS" |
dnl  ---           sed 's,\.[[^.]]* ,.lo ,g;s,\.[[^.]]*$,.lo,'`
dnl  --- AC_SUBST(LTLIBOBJS)

dnl  ----- Write the Makefile
AC_CONFIG_FILES([Makefile src/Makefile contrib/linux/rootsh.spec])
AC_OUTPUT