#!/bin/sh
##
## Setup a supervised OpenLDAP slapd service
## Copyright (c) 2007-2017 SATOH Fumiyasu @ OSS Technology Corp., Japan
##               <http://www.osstech.co.jp/>
##
## License: GNU General Public License version 2 or later
##

set -u
umask 0022

pdie()
{
  echo "$0: ERROR: $1" 1>&2
  exit 1
}

## Options
## ======================================================================

root="${SLAPD_SVCONF_ROOT-}"
sv_cmd="/opt/osstech/sbin/slapd"
sv_env="
  WORKINGDIR
  NICE
  IONICE
  MEMORYLIMIT
  DATALIMIT
  STACKLIMIT
  OPENFILELIMIT
  COREFILELIMIT
  COMMAND
  ARGV0
  OPTIONS
  USER
  GROUP
  CONFIGFILE
  DEBUGLEVEL
  SYSLOGLEVEL
  SYSLOGFACILITY
  SERVICES
  DEBUGGER
"

if [ $# -lt 2 ] || [ $# -gt 3 ]; then
  echo "Usage: $0 /SVDIR USER [CONFIGFILE]" 1>&2
  exit 1
fi

sv_dir="$1"; shift
sv_user="$1"; shift
sv_configfile="${1-}"; ${1+shift}

## Create service directory
## ======================================================================

mkdir "$root$sv_dir" || exit 1
mkdir "$root$sv_dir/env" || exit 1

## The "once" is an OSSTech-specific file and is used by
## /etc/init.d/svinit, not for supervise(8).
touch "$root$sv_dir/down" "$root$sv_dir/once" || exit 1

for env in $sv_env; do
  touch "$root$sv_dir/env/$env" || exit 1
done
echo "$sv_cmd" >"$root$sv_dir/env/COMMAND" || exit 1
echo "$sv_user" >"$root$sv_dir/env/USER" || exit 1
if [ -n "$sv_configfile" ]; then
  echo "$sv_configfile" >"$root$sv_dir/env/CONFIGFILE" || exit 1
fi
echo "16384" >"$root$sv_dir/env/OPENFILELIMIT" || exit 1
echo "=" >"$root$sv_dir/env/COREFILELIMIT" || exit 1

## NOTE: $OPENFDLIMIT is for backward compatibility
cat <<'EOT_SV_RUN' >"$root$sv_dir/run" || exit 1
#!/bin/sh
exec 2>&1
exec envdir ./env sh -c '
  sv_dir=`pwd`
  ${WORKINGDIR:+cd} ${WORKINGDIR:+"$WORKINGDIR"}
  if [ -d "$CONFIGFILE" ]; then
    config_opt="-F"
  else
    config_opt="-f"
  fi
  if [ -n "$SERVICES" ]; then
    SERVICES="ldapi:/// $SERVICES"
  else
    SERVICES="ldapi:/// ldap:/// ldaps:///"
  fi
  echo "PID: $$"
  env |sort |sed "s/^/Environment: /"
  set -- \
    ${NICE:+nice} ${NICE:+-n} ${NICE:+"$NICE"} \
    ${IONICE:+ionice} ${IONICE:+-n} ${IONICE:+"$IONICE"} \
    softlimit \
      ${MEMORYLIMIT:+"-m$MEMORYLIMIT"} \
      ${DATALIMIT:+"-d$DATALIMIT"} \
      ${STACKLIMIT:+"-s$STACKLIMIT"} \
      ${OPENFILELIMIT:+"-o$OPENFILELIMIT"} \
      ${OPENFDLIMIT:+"-o$OPENFDLIMIT"} \
      ${COREFILELIMIT:+"-c$COREFILELIMIT"} \
    $DEBUGGER \
    "$COMMAND" \
      -d "${DEBUGLEVEL:-none}" \
      ${CONFIGFILE:+"$config_opt$CONFIGFILE"} \
      ${SERVICES:+"-h$SERVICES"} \
      ${USER:+"-u$USER"} \
      ${GROUP:+"-g$GROUP"} \
      ${SYSLOGLEVEL:+"-s$SYSLOGLEVEL"} \
      ${SYSLOGFACILITY:+"-l$SYSLOGFACILITY"} \
      $OPTIONS \
    ;
  ## ksh: Ensure that all commands in the pipeline are terminated
  wait
  echo "Execute: $@"
  exec "$@"
'
EOT_SV_RUN
chmod 0755 "$root$sv_dir/run" || exit 1

## The "notify" is for supervise(8) in daemontools-encore, not daemontools
cat <<'EOT_SV_NOTIFY' >"$root$sv_dir/notify" || exit 1
#!/bin/sh
echo "Notify: script=$1 status=$2 pid=$3 exit=$4"
EOT_SV_NOTIFY
chmod 0755 "$root$sv_dir/notify" || exit 1

exit 0
