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LibWeb: Add a basic content filter (ad blocking!) :^)

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This patch adds a global (per-process) filter list to LibWeb that is
used to filter all outgoing resource load requests.

Basically we check the URL against a list of filter patterns and if
it's a match for any one of them, we immediately fail the load.

The filter list is a simple text file:

    ~/.config/BrowserContentFilters.txt

It's one filter per line and they are simple glob filters for now,
with implicit asterisks (*) at the start and end of the line.
This commit is contained in:
Andreas Kling 2021-01-05 18:12:29 +01:00
parent 1c8eaf28cd
commit a6d52e0c97
5 changed files with 141 additions and 1 deletions
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12
Applications/Browser/main.cpp
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@ -43,6 +43,7 @@
#include <LibGUI/TabWidget.h>
#include <LibGUI/Window.h>
#include <LibGfx/Bitmap.h>
#include <LibWeb/Loader/ContentFilter.h>
#include <LibWeb/Loader/ResourceLoader.h>
#include <stdio.h>
#include <stdlib.h>
@ -132,6 +133,17 @@ int main(int argc, char** argv)
auto m_config = Core::ConfigFile::get_for_app("Browser");
Browser::g_home_url = m_config->read_entry("Preferences", "Home", "about:blank");
auto ad_filter_list_or_error = Core::File::open(String::formatted("{}/BrowserContentFilters.txt", Core::StandardPaths::config_directory()), Core::IODevice::ReadOnly);
if (!ad_filter_list_or_error.is_error()) {
auto& ad_filter_list = *ad_filter_list_or_error.value();
while (!ad_filter_list.eof()) {
auto line = ad_filter_list.read_line();
if (line.is_empty())
continue;
Web::ContentFilter::the().add_pattern(line);
}
}
bool bookmarksbar_enabled = true;
auto bookmarks_bar = Browser::BookmarksBarWidget::construct(Browser::bookmarks_file_path(), bookmarksbar_enabled);