From bf244d01e4bfd0aac0fc4a2260aeac631b75322d Mon Sep 17 00:00:00 2001
From: mischa <mischa@rx.high5.nl>
Date: Mon, 8 May 2023 07:49:51 +0000
Subject: [PATCH] add protect function, and check if IP is in the protected pf
 table

---
 ptrd.pl | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/ptrd.pl b/ptrd.pl
index b6e64ac..516d006 100755
--- a/ptrd.pl
+++ b/ptrd.pl
@@ -126,10 +126,11 @@ sub http_child {
 		my ($first, $token, $hostname) = split(/\//, $r->uri->as_string);
 		my $tld = (defined($hostname) ? substr($hostname, rindex($hostname, '.')+1) : '');
 		$hostname = (!defined($hostname) ? $token : lc($hostname));
+		my $protected = system("pfctl -qt protected -T test $client_ip 2> /dev/null");
 
 		if ($ip->overlaps($ipv4_range) or $ip->overlaps($ipv6_range)) {
 
-			if ($token eq 'token') {
+			if ($token eq 'token' and $protected) {
 				my $token = sha1_hex(int(rand(32)));
 				open my $fh_token, '>', "${workdir}/tokens/${token}";
 				print $fh_token "$client_ip\n";
@@ -138,7 +139,14 @@ sub http_child {
 				_log("$client_ip $token");
 				_http_response($c, {content_type => 'text/plain'}, "$token");
 
-			} elsif (-e  "${workdir}/tokens/$token" and grep(/^${tld}$/i, @tlds) and ($hostname =~ /(?=^.{4,253}$)(^((?!-)[a-zA-Z0-9-]{1,63}(?<!-)\.)+[a-zA-Z]{2,63}$)/)) {
+			} elsif ($token eq 'protect') {
+				my $protect = qx(pfctl -t protected -T add $client_ip 2>&1);
+				chomp $protect;
+
+				_log("$client_ip $token $protect");
+				_http_response($c, {content_type => 'text/plain'}, "Received [$client_ip -> protect] $protect");
+				
+			} elsif (-e  "${workdir}/tokens/$token" and grep(/^${tld}$/i, @tlds) and ($hostname =~ /(?=^.{4,253}$)(^((?!-)[a-zA-Z0-9-]{1,63}(?<!-)\.)+[a-zA-Z]{2,63}$)/) and $protected) {
 
 				open my $fh, '>', "${workdir}/records/${client_ip}";
 				if ($ip->overlaps($ipv4_range)) {
@@ -170,7 +178,7 @@ sub http_child {
 				_http_error($c, RC_REQUEST_TIMEOUT);
 
 			} else {
-				_log("$client_ip RC_BAD_REQUEST $hostname");
+				_log("$client_ip RC_BAD_REQUEST $hostname ($protected)");
 				_http_error($c, RC_BAD_REQUEST);
 			}