From 2e5edcf27e7d2a212043a7ac1b906217b357b964 Mon Sep 17 00:00:00 2001
From: Gingeh <39150378+Gingeh@users.noreply.github.com>
Date: Wed, 25 Sep 2024 17:38:59 +1000
Subject: [PATCH] LibWeb: Use substring matching for content filters

---
 .../default-config/BrowserContentFilters.txt         |  4 ++--
 Userland/Libraries/LibWeb/Loader/ContentFilter.cpp   | 12 ++----------
 2 files changed, 4 insertions(+), 12 deletions(-)

diff --git a/Base/res/ladybird/default-config/BrowserContentFilters.txt b/Base/res/ladybird/default-config/BrowserContentFilters.txt
index 6efc23b0205..3cc87438777 100644
--- a/Base/res/ladybird/default-config/BrowserContentFilters.txt
+++ b/Base/res/ladybird/default-config/BrowserContentFilters.txt
@@ -406,8 +406,8 @@ glassboxdigital.io
 go-mpulse.net
 go2speed.org
 google-analytics.com
-google.com/gen_204\?
-google.com/log\?
+google.com/gen_204?
+google.com/log?
 googleadservices.com
 googleoptimize.com
 googlesyndication.com
diff --git a/Userland/Libraries/LibWeb/Loader/ContentFilter.cpp b/Userland/Libraries/LibWeb/Loader/ContentFilter.cpp
index d9a8c7cdf38..113a8cbdf55 100644
--- a/Userland/Libraries/LibWeb/Loader/ContentFilter.cpp
+++ b/Userland/Libraries/LibWeb/Loader/ContentFilter.cpp
@@ -27,7 +27,7 @@ bool ContentFilter::is_filtered(const URL::URL& url) const
     auto url_string = url.to_byte_string();
 
     for (auto& pattern : m_patterns) {
-        if (url_string.matches(pattern.text, CaseSensitivity::CaseSensitive))
+        if (url_string.find(pattern.text).has_value())
             return true;
     }
     return false;
@@ -38,15 +38,7 @@ ErrorOr<void> ContentFilter::set_patterns(ReadonlySpan<String> patterns)
     m_patterns.clear_with_capacity();
 
     for (auto const& pattern : patterns) {
-        StringBuilder builder;
-
-        if (!pattern.starts_with('*'))
-            TRY(builder.try_append('*'));
-        TRY(builder.try_append(pattern));
-        if (!pattern.ends_with('*'))
-            TRY(builder.try_append('*'));
-
-        TRY(m_patterns.try_empend(TRY(builder.to_string())));
+        TRY(m_patterns.try_empend(pattern));
     }
 
     return {};