#!/bin/ksh
################################################################################
#
# File:         configure_machine
# Description:  A script to set up the "admin" environment
# Author:       Andrew@DeFaria.com
# Created:      Tue Apr 15 14:20:02 PDT 1997
# Modified:
# Language:     Korn Shell
#
# (c) Copyright 2001, Andrew@DeFaria.com, all rights reserved
#
################################################################################
me=$(basename $0)

# Set adm_base
adm_base=${adm_base:-$HOME/adm}

if [ ! -d /adm ]; then
  if [ ! -d "$adm_base" ]; then
    print -u2 "$me: Error: Unable to find \"adm\" path! - Exiting"
    exit 1
  fi
fi

# Set adm_fpath
adm_fpath=${adm_fpath:-$adm_base/functions}

# Source functions
. $adm_fpath/common

# Source in tmpfiles function
tmpprefix=${TMPDIR:-/tmp}/configure_machine.$$
. $adm_fpath/tmpfiles
arm_trap

verbose=
debug=
mode=check

function usage {
  info "$ME [-v|verbose] [-d|debug] [-usage]"
  info "        -v|verbose:     Turns on verbose mode"
  info "        -d|debug:       Turns on debug mode"
  info "        -f|ix:          Turns on fix mode"
  info "        -c|heck:        Turns on check mode (default)"
  info "        -usage:         Print this usage message\n"

  error "$1" 1
} # usage

function symlink {
  debug "ENTER symlink"
  from="$1"
  to="$2"

  if [ ! -h "$from" ]; then
    if [ $mode = "fix" ]; then
      verbose "Setting up symlink from $from -> $to"
      ln -s "$to" "$from"
    else
      warning "$from link is not setup properly" 0
    fi
  else
    verbose "$from link is OK"
  fi

  debug "EXIT symlink"
} # symlink

function setup_symlinks {
  debug "ENTER setup_symlinks"

  symlinks="\
/adm            $adm_base\
"
  print $symlinks | while read from to; do
    symlink $from $to
  done

  debug "EXIT setup_symlinks"
} # setup_symlinks

function check_and_replace_file {
  debug "ENTER check_and_replace_file"
  master_file="$1"
  check_file="$2"
  permissions="$3"
  owner_group="$4"

  if ! cmp -s $master_file $check_file; then
    if [ $mode = "fix" ]; then
      verbose "Fixing $check_file"
      cp $master_file $check_file
      chmod $permissions $check_file
      chown $owner_group $check_file
    else
      warning "$check_file is not setup properly" 0
    fi
  else
    verbose "$check_file is OK"
  fi

  debug "EXIT check_and_replace_file"
} # check_and_replace_file

function check_nsswitch_conf {
  debug "ENTER check_nsswitch_conf"

  sed 's/automount:     files nis/automount:    nis files/' \
    /etc/nsswitch.conf > $tmpprefix.nsswitch.conf

  check_and_replace_file $tmpprefix.nsswitch.conf /etc/nsswitch.conf 444
root:adm

  debug "EXIT check_nsswitch_conf"
} # check_nsswitch_conf

function check_automount_maps {
  debug "ENTER check_automount_maps"

  for map in master home direct indirect; do
    check_and_replace_file /adm/etc/auto_$map /etc/auto_$map 444 root:adm
  done

  debug "EXIT check_automount_maps"
} # check_automount_maps

function setup_rcfiles {
  debug "ENTER setup_rcfiles"
  local_src=$ADM_PATH/etc/init.d/local
  local_dest=/etc/init.d/local
  local_symlink=/etc/rc3.d/S99local

  if [ ! -x $local_dest ]; then
    if [ $mode = "fix" ]; then
      verbose "Creating $local_dest"
      cp "$local_src" $local_dest
      chown root:adm $local_dest
      chmod 555 $local_dest
    else
      warning "$local_dest does not exist!" 0
    fi
  else
    verbose "$local_dest is OK"
  fi

  if [ ! -h $local_symlink ]; then
    if [ $mode = "fix" ]; then
      verbose "Setting up $local_symlink"
      ln -s $local_dest $local_symlink
    else
      warning "$local_symlink does not exist!" 0
    fi
  else
    verbose "$local_symlink is OK"
  fi

  if [ ! -d /etc/Startup ]; then
    if [ $mode = "fix" ]; then
      verbose "Creating /etc/Startup directory"
      mkdir /etc/Startup
      chown root:adm /etc/Startup
      # Note: Security would be better if this was 775...
      chmod 777 /etc/Startup
    else
      warning "/etc/Startup does not exist!" 0
    fi
  else
    verbose "/etc/Startup is OK"
  fi

  start_views_src=$ADM_PATH/clearcase/start_views
  start_views_dest=/etc/Startup/start_views

  if [ ! -x $start_views_dest ]; then
    if [ $mode = "fix" ]; then
      verbose "Creating $start_views_dest"
      cp "$start_views_src" $start_views_dest
      chown root:adm $start_views_dest
      chmod 555 $start_views_dest
    else
      warning "$start_views_dest does not exist!" 0
    fi
  else
    verbose "$start_views_dest is OK"
  fi

  views_to_start_src=$ADM_PATH/clearcase/views_to_start
  views_to_start_dest=/etc/views_to_start

  if [ ! -f $views_to_start_dest ]; then
    if [ $mode = "fix" ]; then
      verbose "Creating $views_to_start_dest"
      cp "$views_to_start_src" $views_to_start_dest
      chown root:adm $views_to_start_dest
      chmod 555 $views_to_start_dest
    else
      warning "$views_to_start_dest does not exist!" 0
    fi
  else
    verbose "$views_to_start_dest is OK"
  fi

  debug "EXIT setup_rcfiles"
} # setup_rcfiles

function setup_root_rhosts {
  debug "ENTER setup_root_rhosts"
  root_rhosts_src="$ADM_PATH/etc/root_rhosts"
  root_rhosts_dest="/.rhosts"

  if [ ! -f $root_rhosts_dest ]; then
    if [ $mode = "fix" ]; then
      verbose "Creating $root_rhosts_dest"
      cp "$root_rhosts_src" $root_rhosts_dest
      chown root:adm $root_rhosts_dest
      chmod 400 $root_rhosts_dest
    else
      warning "$root_rhosts_dest does not exist!" 0
    fi
  else
    if is_root; then
      if ! cmp -s $root_rhosts_src $root_rhosts_dest; then
        if [ $mode = "fix" ]; then
          verbose "Updating $root_rhosts_dest"
          cp "$root_rhosts_src" $root_rhosts_dest
          chown root:adm $root_rhosts_dest
          chmod 400 $root_rhosts_dest
        else
          warning "Contents of $root_rhosts_dest is non standard!" 0
        fi
      fi
    else
      verbose "$root_rhosts_dest is present"
      verbose "Contents not check since you're not running as root"
    fi
  fi

  debug "EXIT setup_root_rhosts"
} # setup_root_rhosts

function setup_root_profile {
  debug "ENTER setup_root_profile"
  if [ "$VENDOR" = "HP" ]; then
    debug "RETURN setup_root_profile (Skip HP machines)"
    return
  fi
  root_profile_src="$ADM_PATH/etc/root_profile"
  root_profile_dest="/.profile"

  if [ ! -f $root_profile_dest ]; then
    if [ $mode = "fix" ]; then
      verbose "Creating $root_profile_dest"
      cp "$root_profile_src" $root_profile_dest
      chown root:adm $root_profile_dest
      chmod 444 $root_profile_dest
    else
      warning "$root_profile_dest does not exist!" 0
    fi
  else
    if is_root; then
      if ! cmp -s $root_profile_src $root_profile_dest; then
        if [ $mode = "fix" ]; then
          verbose "Updating $root_profile_dest"
          cp "$root_profile_src" $root_profile_dest
          chown root:adm $root_profile_dest
          chmod 400 $root_profile_dest
        else
          warning "Contents of $root_profile_dest is non standard!" 0
        fi
      fi
    else
      verbose "$root_profile_dest is present"
      verbose "Contents not check since you're not running as root"
    fi
  fi

  debug "EXIT setup_root_profile"
} # setup_root_rhosts

# Get parameters
while [ $# -ge 1 ]; do
  case "$1" in
    -usage)
      usage
    ;;

    -v|-verbose)
      verbose=yes
    ;;

    -d|-debug)
      debug=yes
    ;;

    -f|-fix)
      mode=fix
    ;;

    -c|-check)
      mode=check
    ;;

    *)
      usage "Unrecognized parameter $1"
    ;;
  esac
  shift
done

if [ "$mode" = "fix" ]; then
  if ! is_root; then
    error "Must be root to execute this command in fix mode!" 2
  fi
fi

verbose "Starting $me..."
setup_symlinks
check_nsswitch_conf
check_automount_maps
setup_rcfiles
setup_root_rhosts
setup_root_profile
verbose "$me completed"