# bash completion for iptables                             -*- shell-script -*-

_iptables()
{
    local cur prev words cword split
    _init_completion -s || return

    local table chain='s/^Chain \([^ ]\{1,\}\).*$/\1/p'

    if [[ ${words[@]} == *-t\ *filter* ]]; then
        table="-t filter"
    elif [[ ${words[@]} == *-t\ *nat* ]]; then
        table="-t nat"
    elif [[ ${words[@]} == *-t\ *mangle* ]]; then
        table="-t mangle"
    fi

    case $prev in
    -*[AIDRPFXLZ])
        COMPREPLY=( $( compgen -W '`"$1" $table -nL 2>/dev/null | \
                command sed -ne "s/^Chain \([^ ]\{1,\}\).*$/\1/p"`' -- "$cur" ) )
        ;;
    -*t)
        COMPREPLY=( $( compgen -W 'nat filter mangle' -- "$cur" ) )
        ;;
    -j)
        if [[ "$table" == "-t filter" || -z "$table" ]]; then
            COMPREPLY=( $( compgen -W 'ACCEPT DROP LOG ULOG REJECT
                `"$1" $table -nL 2>/dev/null | command sed -ne "$chain" \
                -e "s/INPUT|OUTPUT|FORWARD|PREROUTING|POSTROUTING//"`' -- \
                "$cur" ) )
        elif [[ $table == "-t nat" ]]; then
            COMPREPLY=( $( compgen -W 'ACCEPT DROP LOG ULOG REJECT MIRROR SNAT
                DNAT MASQUERADE `"$1" $table -nL 2>/dev/null | \
                command sed -ne "$chain" -e "s/OUTPUT|PREROUTING|POSTROUTING//"`' \
                -- "$cur" ) )
        elif [[ $table == "-t mangle" ]]; then
            COMPREPLY=( $( compgen -W 'ACCEPT DROP LOG ULOG REJECT MARK TOS
                `"$1" $table -nL 2>/dev/null | command sed -ne "$chain" \
                -e "s/INPUT|OUTPUT|FORWARD|PREROUTING|POSTROUTING//"`' -- \
                "$cur" ) )
        fi
        ;;
    *)
        if [[ "$cur" == -* ]]; then
            COMPREPLY=( $( compgen -W '$( "$1" --help 2>&1 |
                command sed -e "s/^\[\!\]//" | _parse_help - )' -- "$cur" ) )
            [[ $COMPREPLY == *= ]] && compopt -o nospace
        fi
        ;;
    esac

} &&
complete -F _iptables iptables

# ex: filetype=sh