nc.subr

#10.0.3
# common functions used by various rc scripts

# jname must be set
# export myjid as JID
# return 0 if jail not exist
# return 1 if jail exist
get_jid() {
    local _res
    myjid="0"

    [ -z "$jname" -a -z "${path}" ] && return 0

    _res=$(/usr/sbin/jls -h jid name |tail +2| while read _jid _name; do
	[ "${_name}" = "${jname}" ] && echo ${_jid}
    done)

    [ -z "${_res}" ] && return 0

    myjid=${_res}
    return 1
}

# fatal error. Print message then quit with exitval
err() {
        exitval=$1
        shift
        echo -e "$*"
        # 1>&2
        exit $exitval
}

# print $MYARG and exit
usage() {
    err 1 "usage: $0 ${MYARG}"
}

# parser/initialization for MYARG, OPTARG
init() {
    local MYNUMTEST=0 _i

    for _i in ${MYARG} ${MYOPTARG}; do
	MYNUMTEST=$(( MYNUMTEST + 1 ))
    done

#    DEBLOG="${tmpdir}/`basename $0`-log.$$"
#    trap "rm -f ${DEBLOG}" HUP INT ABRT BUS TERM EXIT

    # disable history of execution cbsd command inside cbsd command
    export NO_CBSD_HISTORY=yes

    if [ "$1" = "--help" ]; then
	[ -z "${CBSDMODULE}" ] && CBSDMODULE="sys"
	echo "[${CBSDMODULE}] $MYDESC"
	echo "require: ${MYARG}"
	echo "opt: ${MYOPTARG}"
	[ -n "${ADDHELP}" ] && printf "$ADDHELP"
	[ -n "${EXTHELP}" -a -n "${cbsddocsrc}" ] && printf "External help: ${cbsddocsrc}/${EXTHELP}\n"
	exit
    fi

    if [ "$1" = "--args" ]; then
	echo "${greeting} ${MYNUMTEST}"
	for argword in ${MYARG} ${MYOPTARG}; do
	    echo "${argword}"
	done
	err 0 ""
    fi

    [ -f "${localcbsdconf}" ] || err 1 "no such local conf file"
    . ${localcbsdconf}

    # example
    #MYARG="src mk"
    #MYOPTARG="arch"
    while [ -n "$1" -a $MYNUMTEST -gt 0 ]; do
	ARG="${1%%=*}" #todo: value with "world1 world2"
	VAL="${1##*=}"
	    for arg in ${MYARG} ${MYOPTARG}; do
		case "$arg" in
		    "${ARG}") eval "${ARG}=${VAL}"; MYNUMTEST=$((MYNUMTEST - 1)); break ;;
		esac
	    done
	shift
    done

    for i in $MYARG; do
	eval T="\$$i"
	[ -z "${T}" ] && err 1 "${MAGENTA}Please set: ${GREEN}$i${NORMAL}"
    done

    return 0
}

# getyesno var
# Show $1 strings and get answer in infinity loop
# return 0 when YES/1 and 1 when not
# return 3 if not interactive ($inter=0)
getyesno()
{
    if [ "${inter}" = "0" ]; then
	[ "${ALWAYS_YES}" = "1" ] && return 0
	return 3
    fi

    echo -e "${1}"
    answ=
    while [ x$answ = x ]; do
	echo -e "[${GREEN}yes(1) or no(0)${NORMAL}]"
	read reply leftover
	case $reply in
	    #       "yes", "true", "on", or "1"
	    Y*|y*|1)
		return 0
            ;;
	    #       "no", "false", "off", or "0"
	    N*|n*|0)
		return 1
	    ;;
	esac
    done
}

# value="YES" or "NO"
checkyesno()
{
    eval _value=\$${1}

    case $_value in
	#       "yes", "true", "on", or "1"
	[Yy][Ee][Ss]|[Tt][Rr][Uu][Ee]|[Oo][Nn]|1)
	    return 0
	;;
	#       "no", "false", "off", or "0"
	[Nn][Oo]|[Ff][Aa][Ll][Ss][Ee]|[Oo][Ff][Ff]|0)
	    return 1
	;;
	*)
	#                echo "\$${1} is not set properly - see ${rcvar_manpage}."
	    return 1
	;;
    esac
}

# cut prefix from x.x.x.x/pref into IWM variable
ipwmask()
{
    IWM=$( echo $1 |cut -d "/" -f 1 )
}

# parse ip4_addr, check ip, remove commas
# detect when IP6 in list and set flags for sleep
geniplist()
{
    [ ! -f "${distdir}/tools.subr" ] && err 1 "No such tools.subr"
    . ${distdir}/tools.subr

    HAVE_IPV6=0
    multiips=$@

    I=`echo ${multiips} |tr "," " "`
    IPS=""
    ST=0

    for a in ${I}; do
	# Identify type {inet,inet6}.
	iptype $a
	case $? in
	    0)
		echo "IP ${a} not identified"
		continue
		;;
	    2)
		HAVE_IPV6=1
		;;
	esac
	# this is ip
	    ST=$((ST + 1))
	    if [ ${ST} -eq 1 ]; then
    		IPS="${a}"
	    else
		IPS="${IPS} ${a}"
	    fi
    done
}

# print "." for progress activity
dot()
{
    if [ $? -ne 0 ]; then
	${ECHO} "${MAGENTA}Error in $1${NORMAL}"
	if [ -f ${DEBLOG} ]; then
	    ${ECHO} "${MAGENTA}Guru meditaion: ${NORMAL}"
	    cat ${DEBLOG}
	fi

	exit 1
    fi

    [ "$1" = "0" ] && return 0

    printf "${MAGENTA}.${NORMAL}"
}


# check&make lockfile $1
# $2 - additional action for trap
# $3 - safe, for force
makelock()
{
    [ -f "${LOCKFILE}" -a "${3}" = "safe" ] && rm -f ${LOCKFILE}
    [ -f "${LOCKFILE}"  ] && err 1 "Locked: ${LOCKFILE}. Try later"
    TRAPS="rm -f ${LOCKFILE}; exit"

    if [ -n "$2" ]; then
	TRAPS="$2; ${TRAPS}"
    fi

    trap "${TRAPS}" HUP INT ABRT BUS TERM EXIT
    [ "$3" = "safe" ] || touch $LOCKFILE
}


# search for slow jails and wait him before exit
wait_for_jstop()
{
    local ECHO="echo -e"
    local A PID

    while [ 1 ]; do
	A=`find ${ftmpdir} -type f -depth 1 -maxdepth 1 -name jstop\.\*\.\* |head -n1`
	[ -z "${A}" ] && break
	PID=`cat ${A}`
	[ -z "${PID}" ] && break
	${ECHO} "${MAGENTA}Waiting for stopping jail who have pid: ${GREEN}${PID}${NORMAL}"
	/usr/local/bin/cbsd cbsd_pwait --pid=${PID} --timeout=0
    done
}


# search for slow jails and wait him before exit
# if $1 then timeout=$1
wait_for_jstart()
{
    local ECHO="echo -e"
    local A PID
    local parallel=0

    [ -n "$1" ] && parallel=${1}

    while [ 1 ]; do
        A=`find ${ftmpdir} -type f -depth 1 -maxdepth 1 -name jstart\.\*\.\* |head -n1`
        [ -z "${A}" ] && break
        PID=`cat ${A}`
        [ -z "${PID}" ] && break
        ${ECHO} "${MAGENTA}Waiting for starting jail who have pid: ${GREEN}${PID}${NORMAL}"
        /usr/local/bin/cbsd cbsd_pwait --pid=${PID} --timeout=${parallel}
    done
}

# wrapper for including config in $etcdir. $1 is name of the file
# At the first we try to include $etcdir/defaults/$1, in second: $etcdir/$1
readconf()
{
    [ -z "${1}" ] && return 1

    [ -r "${etcdir}/defaults/$1" ] && . ${etcdir}/defaults/$1
    [ -r "${etcdir}/$1" ] && . ${etcdir}/$1
    return 0
}