From 674a96431b0d9cc595d8f23ed1575e0c39f6bb6d Mon Sep 17 00:00:00 2001
From: Pragmatic Software <pragma78@gmail.com>
Date: Fri, 15 Jul 2016 14:09:29 -0700
Subject: [PATCH] Improve nick-change evasion detection logic

---
 PBot/AntiFlood.pm | 8 +++++---
 1 file changed, 5 insertions(+), 3 deletions(-)

diff --git a/PBot/AntiFlood.pm b/PBot/AntiFlood.pm
index a3d52697..2800aa3b 100644
--- a/PBot/AntiFlood.pm
+++ b/PBot/AntiFlood.pm
@@ -860,9 +860,11 @@ sub check_bans {
           return;
         }
 
-        if (exists $self->{nickflood}->{$message_account} and $baninfo->{type} ne 'blacklist') {
-          $self->{pbot}->{logger}->log("anti-flood: [check-bans] $mask evading nick-flood ban, disregarding\n");
-          return;
+        if (exists $self->{nickflood}->{$message_account} and $self->{nickflood}->{$message_account}->{offenses} > 0 and $baninfo->{type} ne 'blacklist') {
+          if (gettimeofday - $self->{nickflood}->{$message_account}->{timestamp} < 60 * 15) {
+            $self->{pbot}->{logger}->log("anti-flood: [check-bans] $mask evading nick-flood ban, disregarding\n");
+            return;
+          }
         }
 
         if ($baninfo->{type} eq 'blacklist') {