#!/bin/sh

# PROVIDE: bitmarkd
# REQUIRE: LOGIN cleanvar
# KEYWORD: shutdown

# Add the following lines to /etc/rc.conf to enable:
# bitmarkd_enable (bool)          Set to "NO" by default.
#                                 Set it to "YES" to enable bitmarkd
# bitmarkd_options (str)          Set to "" by default
# bitmarkd_user (str)             Set to "%%BITMARKD_USER%%" by default.
# bitmarkd_group (str)            Set to "%%BITMARKD_GROUP%%" by default.
# bitmarkd_config_file (str)      Set to "%%PREFIX%%/etc/${name}.conf" by default.
# bitmarkd_data_dir (str)         Set to "%%BITMARKD_DATA%%" by default.
# bitmarkd_run_dir (str)          Set to "%%BITMARKD_RUN%%" by default.
# bitmarkd_syslog_enable (bool)   Set to "NO" by default.
#                                 Set it to "YES" to enable syslog stdout/stderr
# bitmarkd_ec2_ipv4_enable (bool) Set to NO by default.
#                                 Set it to"YES" to fetch EC2 public IPv4.
# bitmarkd_ec2_url (str)
#   Set to "http://169.254.169.254/2016-09-02/meta-data/public-ipv4" by default.
#   Expects this to return just the IPv4 address.
# bitmarkd_ec2_cmd (str)          Set to "fetch -q -o -" by default.
# bitmarkdlimits_enable (bool)    Set to "NO" by default.
#                                 Set it to "YES" to enable bitmarkdlimits
# bitmarkdlimits_args (str)       Set to "-e -U ${bitmarkd_user}" by default

. /etc/rc.subr

name="bitmarkd"
rcvar=bitmarkd_enable

load_rc_config ${name}

: ${bitmarkd_enable:="NO"}
: ${bitmarkd_options:=""}
: ${bitmarkd_user:="%%BITMARKD_USER%%"}
: ${bitmarkd_group:="%%BITMARKD_GROUP%%"}
: ${bitmarkd_config_file:="%%PREFIX%%/etc/${name}.conf"}
: ${bitmarkd_data_dir:="%%BITMARKD_DATA%%"}
: ${bitmarkd_run_dir:="%%BITMARKD_RUN%%"}
: ${bitmarkd_syslog_enable:="NO"}

: ${bitmarkd_ec2_ipv4_enable:="NO"}
: ${bitmarkd_ec2_url:="http://169.254.169.254/2016-09-02/meta-data/public-ipv4"}
: ${bitmarkd_ec2_cmd:="fetch -q -o -"}

: ${bitmarkdlimits_enable:="NO"}
: ${bitmarkdlimits_args:="-e -U ${bitmarkd_user}"}

start_precmd="${name}_precmd"
restart_precmd="${name}_checkconfig"
stop_postcmd="${name}_poststop"
keygen_cmd="${name}_keygen"
keygen_precmd="${name}_checkconfig"
dns_cmd="${name}_dns"
dns_precmd="${name}_checkconfig"
clearcache_cmd="${name}_clearcache"
clearcache_precmd="${name}_precmd"

extra_commands='keygen dns clearcache'

pidfile="${bitmarkd_run_dir}/${name}.pid"

# bitmarkd creates its own PID file so need to remove if stale
lock_file="${bitmarkd_data_dir}/${name}.pid"

required_files="${bitmarkd_config_file}"

_bitmarkd_program="%%PREFIX%%/sbin/bitmarkd"
_bitmarkd_arguments="--quiet --config-file=${bitmarkd_config_file} ${bitmarkd_options}"

command="/usr/sbin/daemon"
command_args="-f"
checkyesno bitmarkd_syslog_enable && command_args="-S -T bitmarkd"
command_args="${command_args} -P ${pidfile} -R 60 -- ${_bitmarkd_program} ${_bitmarkd_arguments}"
#procname=${_bitmarkd_program} # do not override procname as program runs under daemon

# list of items for keygen
generate_list='gen-peer-identity gen-proof-identity gen-rpc-cert'

# setup environment to reduce memory loading
export GODEBUG='madvdontneed=1'
export MALLOC_CONF='abort:true,narenas:1'

bitmarkd_checkdirs()
{
  local dir
  for dir in "${bitmarkd_data_dir}" "${bitmarkd_run_dir}"
  do
    [ -d "${dir}" ] || install -d -o "${bitmarkd_user}" -g "${bitmarkd_group}" -m 770 "${dir}"
  done
  cd "${bitmarkd_data_dir}"
}

bitmarkd_checkconfig()
{
  bitmarkd_checkdirs

  #echo "Performing sanity check on bitmarkd configuration:"
  #eval ${command} ${bitmarkd_flags} -t

  # set environment for bitmarkd to access the currently assigned EC2 public IPv4
  if checkyesno bitmarkd_ec2_ipv4_enable
  then
    PUBLIC_IPV4=$(${bitmarkd_ec2_cmd} "${bitmarkd_ec2_url}")
    export PUBLIC_IPV4
  fi
}

bitmarkd_precmd()
{
  bitmarkd_checkconfig

  pid=$(check_pidfile "${pidfile}" "${command}")
  if [ -n "${pid}" ]
  then
    echo "another bitmarkd is running on pid: ${pid}"
    return 1
  else
    rm -f "${pidfile}"
  fi

  if checkyesno bitmarkdlimits_enable
  then
    eval $(/usr/bin/limits ${bitmarkdlimits_args}) 2>/dev/null
  else
    return 0
  fi
}

bitmarkd_poststop()
{
    rm -f "${pidfile}"
    rm -f "${lock_file}"
}

bitmarkd_keygen()
{
  for c in ${generate_list}
  do
    su -m "${bitmarkd_user}" -c "${_bitmarkd_program} ${_bitmarkd_arguments} ${c} ${bitmarkd_data_dir}"
  done
}

bitmarkd_dns()
{
  su -m "${bitmarkd_user}" -c "${_bitmarkd_program} ${_bitmarkd_arguments} dns-txt"
}

bitmarkd_clearcache()
{
  local file
  for file in "${bitmarkd_data_dir}/"*.cache
  do
    [ -f "${file}" ] && rm "${file}"
  done
}

run_rc_command "$1"