# Copyright (C) 1998 by the Free Software Foundation, Inc.
#
# 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

dnl Process this file with autoconf to produce a configure script.
AC_REVISION($Revision: 1.39 $)
AC_PREREQ(2.0)
AC_INIT(src/alias-wrapper.c)


# /home/mailman is the default installation directory
AC_PREFIX_DEFAULT(/home/mailman)


# Check for Python!  Better be found on $PATH
AC_MSG_CHECKING(for --with-python)
AC_ARG_WITH(python, dnl
[  --with-python		specify path to Python interpreter])
AC_MSG_RESULT($with_python)

if test -z "$with_python"
then
	AC_PATH_PROG(with_python, python, /usr/local/bin/python)
fi

AC_MSG_CHECKING(Python interpreter)
if test ! -x $with_python
then
    AC_MSG_ERROR([

***** No Python interpreter found!
***** Try including the configure option
***** --with-python=/path/to/python/interpreter])
fi
AC_SUBST(PYTHON)
PYTHON=$with_python
AC_MSG_RESULT($PYTHON)

# Checks for programs.
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_PATH_PROG(TRUE, true, true, $PATH:/bin:/usr/bin)

# Find compiler, allow alternatives to gcc
AC_MSG_CHECKING(for --without-gcc)
AC_ARG_WITH(gcc, [  --without-gcc		never use gcc], [
	case $withval in
	no)	CC=cc
		without_gcc=yes;;
	yes)	CC=gcc
		without_gcc=no;;
	*)	CC=$withval
		without_gcc=$withval;;
	esac], without_gcc=no;)
AC_MSG_RESULT($without_gcc)

# If the user switches compilers, we can't believe the cache
if test ! -z "$ac_cv_prog_CC" -a ! -z "$CC" -a "$CC" != "$ac_cv_prog_CC"
then
  AC_ERROR(cached CC is different -- throw away $cache_file
(it is also a good idea to do 'make clean' before compiling))
fi

AC_PROG_CC


# Optimizer/debugger flags passed between Makefiles
AC_SUBST(OPT)
if test -z "$OPT"
then
	case $GCC in
	yes)
		case $ac_cv_prog_cc_g in
		yes)	OPT="-g -O2";;
		*)	OPT="-O2";;
		esac
		;;
	*)	OPT="-O";;
	esac
fi

# We better be able to execute interpreters
AC_SYS_INTERPRETER
if test "$ac_cv_sys_interpreter" != "yes"
then
    AC_MSG_ERROR([

***** Cannot execute interpreter scripts?
***** Are you sure you system doesn't support this?])
fi


# new macro for finding GIDs
AC_DEFUN(MM_FIND_GROUP_ID, [
# $1 == variable name
# $2 == user id to check for
AC_SUBST($1)
changequote(,)
if test -z "$$1"
then
    cat > conftest.py <<EOF
import grp, string
gid = ''
for group in string.split("$2"):
    try:
        try:
	    gid = grp.getgrgid(int(group))[2]
	    break
	except ValueError:
	    gid = grp.getgrnam(group)[2]
	    break
    except KeyError:
        gid = ''
fp = open("conftest.out", "w")
fp.write("%s\n" % gid)
fp.close()
EOF
    $PYTHON conftest.py
    $1=`cat conftest.out`
fi
changequote([, ])
AC_MSG_RESULT($$1)
rm -f conftest.out conftest.py])


# new macro for finding UIDs
AC_DEFUN(MM_FIND_USER_ID, [
# $1 == variable name
# $2 == user id to check for
AC_SUBST($1)
changequote(,)
if test -z "$$1"
then
    cat > conftest.py <<EOF
import pwd, string
uid = ''
for user in string.split("$2"):
    try:
        try:
	    uid = pwd.getpwuid(int(user))[0]
	    break
	except ValueError:
	    uid = pwd.getpwnam(user)[0]
	    break
    except KeyError:
        uid = ''
fp = open("conftest.out", "w")
fp.write("%s\n" % uid)
fp.close()
EOF
    $PYTHON conftest.py
    $1=`cat conftest.out`
fi
changequote([, ])
AC_MSG_RESULT($$1)
rm -f conftest.out conftest.py])

# User `mailman' must exist
AC_MSG_CHECKING(for mailman UID)
MM_FIND_USER_ID(MAILMAN_UID, mailman)
if test -z "$MAILMAN_UID"
then
    AC_MSG_ERROR([
***** No \"mailman\" user found!
***** Your system must have a \"mailman\" user defined (usually
***** in your /etc/passwd file).  Please see the INSTALL file
***** file details.])
fi


# Group `mailman' must exist
AC_MSG_CHECKING(for mailman GID)
MM_FIND_GROUP_ID(MAILMAN_GID, mailman)
if test -z "$MAILMAN_GID"
then
    AC_MSG_ERROR([
***** No \"mailman\" group found!
***** Your system must have a \"mailman\" group defined (usually
***** in your /etc/group file).  Please see the INSTALL file
***** file details.])
fi


# Now make sure that $prefix is set up correctly.  It must be group
# owned by `mailman', it must have the group sticky bit set, and it
# must be a+rx
if test "$prefix" = "NONE"
then
    prefixcheck=$ac_default_prefix
else
    prefixcheck=$prefix
fi

AC_MSG_CHECKING(permissions on $prefixcheck)
changequote(,)
cat > conftest.py <<EOF
import os, grp, string
from stat import *
prefix = "$prefixcheck"
mailmangid = $MAILMAN_GID
problems = []
try: statdata = os.stat(prefix)
except os.error:
    problems.append("Directory doesn't exist: " + prefix)
else:    
    mode = statdata[ST_MODE]
    gid = statdata[ST_GID]
    if mailmangid <> gid:
	problems.append("Directory must be owned by group mailman: " + prefix)
    if (mode & S_ISGID) <> S_ISGID:
	problems.append("Set-gid bit must be set for directory: " +prefix)
    perms = S_IRWXU | S_IRGRP | S_IXGRP | S_IROTH | S_IXOTH
    if (mode & perms) <> perms:
	problems.append("Permissions should be at least 02755: " + prefix)
if not problems:
    msg = "okay\n"
else:
    msg = '***** ' + string.join(problems, '\n***** ') + '\n'
fp = open("conftest.out", "w")
fp.write(msg)
fp.close()
EOF
changequote([, ])
$PYTHON conftest.py
status=`cat conftest.out`
rm -f conftest.out conftest.py
if test "$status" != "okay"
then
    AC_MSG_ERROR([
***** Installation directory $prefixcheck is not configured properly!
$status])
fi

AC_MSG_RESULT(okay)


# Now find the UIDs and GIDs
# Support --with-mail-gid and --with-cgi-gid
AC_MSG_CHECKING(for mail wrapper GID)
AC_ARG_WITH(mail-gid, dnl
[  --with-mail-gid  	specify GID mail programs run as])
if test -z "$with_mail_gid"
then
    AC_CACHE_VAL(ac_cv_group_mail, [dnl
    ac_cv_group_mail="other mail daemon"])
else
    ac_cv_group_mail=$with_mail_gid
fi
MM_FIND_GROUP_ID(MAIL_GID, $ac_cv_group_mail)
if test -z "$MAIL_GID"
then
    AC_MSG_ERROR([
***** No existing group found for the mail_wrapper program.
***** This is the group that your mail delivery agent runs under, and
***** uses to run filter programs.  You might want to specify an
***** existing group with the --with-mail-gid configure option.
***** Please see your mail agent's documentation, and the INSTALL file
***** for details])
fi


AC_MSG_CHECKING(for CGI wrapper GID)
AC_ARG_WITH(cgi-gid, dnl
[  --with-cgi-gid  	specify GID CGI programs run as])
if test -z "$with_cgi_gid"
then
    AC_CACHE_VAL(ac_cv_group_cgi, [dnl
    ac_cv_group_cgi="www www-data nobody"])
else
    ac_cv_group_cgi=$with_cgi_gid
fi

MM_FIND_GROUP_ID(CGI_GID, $ac_cv_group_cgi)
if test -z "$CGI_GID"
then
    AC_MSG_ERROR([
***** No existing group found for the cgi_wrapper program.
***** This is the group that your Web server runs CGI scripts under.
***** You might want to specify an existing group with the
***** --with-cgi-gid configure option.  Please see your Web server's
***** documentation, and the INSTALL file for details])
fi


#MM_FIND_USER_ID(ALIAS_UID, mailman, alias_wrapper)
#MM_FIND_GROUP_ID(ALIAS_GID, mail, alias_wrapper)

# Check for CGI extensions, required by some Web servers
AC_SUBST(CGIEXT)
AC_MSG_CHECKING(for CGI extensions)
AC_ARG_WITH(cgi-ext, dnl
[  --with-cgi-ext	specify extension for CGI programs (include dot)])
if test -z "$with_cgi_ext"
then
	CGIEXT=''
	with_cgi_ext='no'
else
	CGIEXT=$with_cgi_ext
fi
AC_MSG_RESULT($with_cgi_ext)


# figure out the DEFAULT_HOST_NAME and DEFAULT_URL
AC_SUBST(FQDN)
AC_SUBST(URL)
changequote(,)
cat > conftest.py <<EOF
# attempt to figure out the default hostname and URL
from socket import *
import string
fqdn = None
www = None
host, aliases, ipaddrs = gethostbyaddr(gethostbyname(gethostname()))
aliases.insert(0, host)
for h in aliases:
    parts = string.split(h, '.')
    if len(parts) > 1:
        if parts[0] == 'www':
            www = h
        elif not fqdn:
            fqdn = h
fp = open('conftest.out', 'w')
if not www and fqdn:
    fp.write('%s\n%s\n' % (fqdn, fqdn))
elif www:
    dhn = string.join(string.split(www, '.')[1:], '.')
    fp.write('%s\n%s\n' % (dhn, www))
else:
    fp.write('please.change.me\nwww.please.change.me\n')
fp.close()
EOF
$PYTHON conftest.py
changequote([, ])
AC_MSG_CHECKING(for default fully qualified host name)
if test -z "$FQDN"
then
    FQDN=`head -1 conftest.out`
fi
AC_MSG_RESULT($FQDN)
AC_MSG_CHECKING(for default URL host component)
if test -z "$URL"
then
    URL=`tail -1 conftest.out`
fi
AC_MSG_RESULT($URL)
rm -f conftest.out conftest.py

# Checks for libraries.
AC_CHECK_FUNCS(strerror setregid syslog)
if test $ac_cv_func_syslog = no; then
  # syslog is not in the default libraries.  See if it's in some other.
  # Additionally, for at least SCO OpenServer, syslog() is #defined to
  # one of several _real_ functions in syslog.h, so we need to do the test
  # with the appropriate include.
  for lib in bsd socket inet; do
    AC_MSG_CHECKING(for syslog in -l$lib)
    Mailman_LIBS_save="$LIBS"; LIBS="$LIBS -l$lib"
    AC_TRY_LINK([#include <syslog.h>],
                [syslog(LOG_DEBUG, "Just a test...");],
                [AC_MSG_RESULT(yes)
      AC_DEFINE(HAVE_SYSLOG)
      break],
                [AC_MSG_RESULT(no)
      LIBS="$Mailman_LIBS_save"])
    unset Mailman_LIBS_save
  done
fi

# Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(syslog.h)

# Checks for typedefs, structures, and compiler characteristics.
AC_TYPE_UID_T
AC_TYPE_GETGROUPS

# Checks for library functions.
AC_CHECK_FUNCS(vsnprintf)

dnl Output everything
AC_OUTPUT([misc/paths.py Mailman/Defaults.py Mailman/mm_cfg.py.dist
           src/Makefile misc/Makefile bin/Makefile
	   Mailman/Makefile Mailman/Cgi/Makefile Mailman/Logging/Makefile
	   Mailman/Archiver/Makefile Mailman/pythonlib/Makefile
	   mail/Makefile templates/Makefile cron/Makefile
	   filters/Makefile scripts/Makefile
	   cron/crontab.in Makefile])
