##################################################
# Formatting functions for efficiency report
##################################################
_LABELW=34
OUTFORM="%-34s : %8d %8d %8d %'15d\n"
TOTFORM="%34s » %8d %8d %8d %'15d\n"
DETFORM="%34s . %8d %8d %8d %'15d\n"
COLFORM="%34s | %8s %8s %8s %15s\n"


# Draw a section headline
# $1 headline text
# $2 character for line
headline() {
local funtag="[${FUNCNAME[0]}]"
local	total=60

	awk -v text="$1" -v tot_width=$total -v char="$2" '
	BEGIN {
	prefixlen=5
	for (i=1; i<=prefixlen; i++) { prefix = prefix char }
	strlen = length(text);
	suffixlen = tot_width - length(prefix) - strlen - 1; # "- 2" für die Leerzeichen
	if (suffixlen < 0) suffixlen = 0;
	suffix = sprintf("%*s", suffixlen, ""); # Generiere leerzeichen-basiertes Padding
	gsub(" ", char, suffix);                # Ersetze Leerzeichen mit "-"
	print ""
	print prefix " " text " " suffix;
	}'
}


# Draw a simple separation line
# $1 character for line
sepline() {
local funtag="[${FUNCNAME[0]}]"
local	total=79

	awk -v tot_width=$total -v char="$1" '
	BEGIN {
		for (i=1; i<=tot_width; i++) { line = line char }
		print line;
	}'
}

# Print a section headline
sec_headline() {
# $1	Section name
# $2	character to use
local funtag="[${FUNCNAME[0]}]"
local	total=53

	awk -v text="$1" -v tot_width=$total -v char="$2" '
	BEGIN {
	prefixlen=5
	for (i=1; i<=prefixlen; i++) { prefix = prefix char }
	strlen = length(text);
	suffixlen = tot_width - length(prefix) - strlen - 1; # "- 2" für die Leerzeichen
	if (suffixlen < 0) suffixlen = 0;
	suffix = sprintf("%*s", suffixlen, ""); # Generiere leerzeichen-basiertes Padding
	gsub(" ", char, suffix);                # Ersetze Leerzeichen mit "-"
	print ""
	print prefix " " text " " suffix;
	}'
}


################################################################################
# Caculation helpers
################################################################################
#
# Cummulate packets from legal access taken from the WATCGCNT chain
cummulate_passed_connections() {
local funtag="[${FUNCNAME[0]}]"
local   report

        awk '
        BEGIN { sum=0 }
        /(tcp dpt:)/    { sum += $1 }
        END             { print sum }
        ' <<< $(iptables -vnL WATCHCNT)
}

cummulate_passthru_connections() {
local funtag="[${FUNCNAME[0]}]"
local   report

        awk '
        BEGIN { packets=0 }
        /^[1-9]/        {
                                # Extract packet count ...
                                match($0, /packets ([0-9]+)/, tmp)
                                packets += tmp[1]
                        }
        END             { print packets }
        ' <<< $(ipset l passthru)
}

# Get a unique jump target (DROP, ACCEPT, ...)
# for a [table, chain, ipset name] combo
get_jump_target() {
# $1    the table (raw, mangle, filter)
# $2    the chain
# $3    the ipset name
local funtag="[${FUNCNAME[0]}]"

        iptables -t "$1" -vxnL "$2" |\
        awk -v ipsetname="$3" '
                $0 ~ "match-set[[:space:]]+" ipsetname "([[:space:]]|$)" { print $3 }
        '
}


# Get a unique jump target (DROP, ACCEPT, ...)
# for a [table, chain, ipset name] combo
get_set_conditions() {
# $1    the table (raw, mangle, filter)
# $2    the chain
# $3    the ipset name
local funtag="[${FUNCNAME[0]}]"

	# Return a tuple of (packets, bytes, jump-target)
        iptables -t "$1" -vxnL "$2" |\
        awk -v ipsetname="$3" '
                $0 ~ "match-set[[:space:]]+" ipsetname "([[:space:]]|$)" { print $1,$2,$3 }
        '
}



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