#!/bin/bash

. `dirname $0`/functions

option	config		standard_option	/etc/ntp/ntp.conf
option	keys		standard_option	/etc/ntp/ntp.keys
option	pidfile		reserved_option	/var/run/ntp.pid
option	hard_sync	boolean_option	# not used anymore
option	min_servers	standard_option 1
option	force_sync	boolean_option
option	unpriv_port	boolean_option  1
option	sync_servers	long_option

option	procname	reserved_option	ntpd
option	bin		reserved_option	/usr/sbin/ntpd
option	cmdline		reserved_option	'$bin -c $opt_config -p $pidfile -k $opt_keys'

function do_help {
    echo "Usage: ${0##*/} <status|start|query|update|stop|check|help>"
    echo "List of config.rc options (name, type, default value, current value) :"
    echo
    echo "   - config       : file    ; def='/etc/ntp/ntp.conf' ; cur=$opt_config"
    echo "   - keys         : file    ; def='/etc/ntp/ntp.keys' ; cur=$opt_keys"
    echo "   - min_servers  : integer ; def=1                   ; cur=$opt_min_servers"
    echo "   - force_sync   : boolean ; def=0                   ; cur=$opt_force_sync"
    echo "   - unpriv_port  : boolean ; def=1                   ; cur=$opt_unpriv_port"
    echo "   - sync_servers : IP list ; def=<automatic>         ; cur='${opt_sync_servers[@]}'"
    echo
    exit 1 
}

# assign values after all the options have been read
function fct_end_section {
    if [ -z "$opt_sync_servers" ]; then
	valueof $opt_config server > /dev/null
	opt_sync_servers=( $REPLY )
	opt_sync_servers=( ${opt_sync_servers[@]##127.*} )
    fi
}

# perform a forced synchronisation before starting the daemon
function fct_pre_start {
    local driftfile
    local synced=0

    valueof $opt_config driftfile > /dev/null 2>&1 ; driftfile=$REPLY
    if [ -n "$driftfile" -a ! -e "${driftfile%/*}" ] ; then
        mkdir -p ${driftfile%/*}
    fi
    if [ "$opt_force_sync" = "1" ]; then
	if [ -x /usr/bin/ntptimeset ]; then
	   echo "  Using ntptimeset to sync with servers..."
	   if /usr/bin/ntptimeset -l -s -c $opt_config -S $opt_min_servers \
	      -V $opt_min_servers -t 5 ${opt_unpriv_port:+-u}; then
		synced=1
	    else
		echo "  --> sync failed."
	    fi
	fi

	if [ $synced -eq 0 ]; then
	    if [ -z "$opt_sync_servers" ]; then
	        echo "  --> sync_servers not set, and ntptimeset not installed. Not forcing sync."
            else
	        echo "  Using ntpdate to sync with server(s) ${opt_sync_servers[*]}..."
	        if /usr/bin/ntpdate ${opt_unpriv_port:+-u} -t 2  ${opt_sync_servers[*]}; then
		    synced=1
	        else
		    echo "  --> sync failed, starting unsynced."
	        fi
            fi
	fi
    fi
    return 0
}

# execute a forced resynchronisation to sync servers
function do_update {
    local synced=0
    if [ -x /usr/bin/ntptimeset ]; then
	echo "  Using ntptimeset to sync with servers..."
	if /usr/bin/ntptimeset -l -s -c $opt_config -S $opt_min_servers \
	   -V $opt_min_servers -t 5 ${opt_unpriv_port:+-u}; then
	    synced=1
	else
	    echo "  --> sync failed."
	fi
    fi

    if [ $synced -eq 0 ]; then
        if [ -z "$opt_sync_servers" ]; then
	    echo "  --> sync_servers not set, and ntptimeset not installed. Aborting."
        else
	    echo "  Using ntpdate to sync with server(s) ${opt_sync_servers[*]}..."
	    if /usr/bin/ntpdate ${opt_unpriv_port:+-u} -t 2 ${opt_sync_servers[*]}; then
	        synced=1
	    else
	        echo "  --> sync failed. Aborting."
	    fi
	fi
    fi

    test $synced -eq 1
    return $?
}

function do_query {
    ntpq -p 127.0.0.1
}

load_config