#!/bin/bash
#
# This file is part of the Cygwin DLL.

# Directory where the config files are stored
SYSCONFDIR=/etc
LOCALSTATEDIR=/var

progname=$0
auto_answer=""
service_name=cygserver

request()
{
  if [ "${auto_answer}" = "yes" ]
  then
    echo "$1 (yes/no) yes"
    return 0
  elif [ "${auto_answer}" = "no" ]
  then
    echo "$1 (yes/no) no"
    return 1
  fi

  answer=""
  while [ "X${answer}" != "Xyes" -a "X${answer}" != "Xno" ]
  do
    echo -n "$1 (yes/no) "
    read -e answer
  done
  if [ "X${answer}" = "Xyes" ]
  then
    return 0
  else
    return 1
  fi
}

# Check options

while :
do
  case $# in
  0)
    break
    ;;
  esac

  option=$1
  shift

  case "${option}" in
  -d | --debug )
    set -x
    ;;

  -y | --yes )
    auto_answer=yes
    ;;

  -n | --no )
    auto_answer=no
    ;;

  -N | --name )
    service_name=$1
    shift
    ;;

  *)
    echo "usage: ${progname} [OPTION]..."
    echo
    echo "This script creates an Cygserver service configuration."
    echo
    echo "Options:"
    echo "  --debug  -d            Enable shell's debug output."
    echo "  --yes    -y            Answer all questions with \"yes\" automatically."
    echo "  --no     -n            Answer all questions with \"no\" automatically."
    echo "  --name   -N <name>     cygserver windows service name."
    echo
    exit 1
    ;;

  esac
done

# Check if running on NT
_sys="`uname`"
_nt=`expr "${_sys}" : "CYGWIN_NT"`

# Check for running cygserver processes first.
if ps -ef | grep -v grep | grep -q ${service_name}
then
  echo
  echo "There is a cygserver (${service_name}) already running. Nothing to do, apparently."
  echo
  exit 1
fi

# Check for ${SYSCONFDIR} directory
if [ -e "${SYSCONFDIR}" -a ! -d "${SYSCONFDIR}" ]
then
  echo
  echo "${SYSCONFDIR} is existant but not a directory."
  echo "Cannot create global configuration file."
  echo
  exit 1
fi

# Create it if necessary
if [ ! -e "${SYSCONFDIR}" ]
then
  mkdir "${SYSCONFDIR}"
  if [ ! -e "${SYSCONFDIR}" ]
  then
    echo
    echo "Creating ${SYSCONFDIR} directory failed"
    echo
    exit 1
  fi
fi

# Create /var/log if not already existing
if [ -f ${LOCALSTATEDIR}/log ]
then
  echo "Creating ${LOCALSTATEDIR}/log failed!"
else
  if [ ! -d ${LOCALSTATEDIR}/log ]
  then
    mkdir -p ${LOCALSTATEDIR}/log
  fi
fi

# Check if cygserver.conf exists. If yes, ask for overwriting
if [ -f "${SYSCONFDIR}/cygserver.conf" ]
then
  if request "Overwrite existing ${SYSCONFDIR}/cygserver.conf file?"
  then
    rm -f "${SYSCONFDIR}/cygserver.conf"
    if [ -f "${SYSCONFDIR}/cygserver.conf" ]
    then
      echo
      echo "Can't overwrite. ${SYSCONFDIR}/cygserver.conf is write protected."
      echo
      exit 1
    fi
  fi
fi

# Create default cygserver.conf from skeleton files in /etc/defaults/etc
if [ ! -f "${SYSCONFDIR}/cygserver.conf" ]
then
  echo "Generating ${SYSCONFDIR}/cygserver.conf file"
  cp "${SYSCONFDIR}/defaults/etc/cygserver.conf" "${SYSCONFDIR}/cygserver.conf"
  if [ ! -f "${SYSCONFDIR}/cygserver.conf" ]
  then
    echo
    echo "Couldn't create ${SYSCONFDIR}/cygserver.conf."
    echo "Perhaps there's no default file in ${SYSCONFDIR}/defaults/etc?"
    echo "Reinstalling Cygwin might help."
    echo
    exit 1
  fi
  chmod 664 "${SYSCONFDIR}/cygserver.conf"
  chown 18.544 "${SYSCONFDIR}/cygserver.conf"
fi

# On NT ask if cygserver should be installed as service
if [ ${_nt} -gt 0 ]
then
  # But only if it is not already installed
  if ! cygrunsrv -Q ${service_name} > /dev/null 2>&1
  then
    echo
    echo
    echo "Warning: The following function requires administrator privileges!"
    echo
    echo "Do you want to install cygserver as service?"
    if request "(Say \"no\" if it's already installed as service)"
    then
      if ! cygrunsrv -I ${service_name} -d "CYGWIN cygserver" -p /usr/sbin/cygserver
      then
        echo
	echo "Installation of cygserver as service failed.  Please check the"
	echo "error messages you got.  They might give a clue why it failed."
	echo
	echo "A good start is either you don't have administrator privileges"
	echo "or a missing cygrunsrv binary.  Please check for both."
	echo
	exit 1
      fi
      echo
      echo "The service has been installed under LocalSystem account."
      echo "To start it, call \`net start ${service_name}' or \`cygrunsrv -S ${service_name}'."
    fi
    touch "${LOCALSTATEDIR}/log/cygserver.log"
    chown 18.544 "${LOCALSTATEDIR}/log/cygserver.log"
  fi
fi

echo
echo "Further configuration options are available by editing the configuration"
echo "file ${SYSCONFDIR}/cygserver.conf.  Please read the inline information in that"
echo "file carefully. The best option for the start is to just leave it alone."
echo
echo "Basic Cygserver configuration finished. Have fun!"
echo