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Code Issues Projects Releases Packages Wiki Activity Actions 10

LibWebView: Do not use AK::format to format search engine URLs

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This is to prepare for custom search engines. If we use AK::format, it
would be trivial for a user (or bad actor) to come up with a template
search engine URL that ultimately crashes the browser due to internal
assertions in AK::format. For example:

    https://example.com/crash={1}

Rather than coming up with a complicated pre-format validator, let's
just not use AK::format. Custom URLs will signify their template query
parameters with "%s". So we can do the same with our built-in engines.
When it comes time to format the URL, we will do a simple string
replacement.
This commit is contained in:
Timothy Flynn 2025-04-04 17:32:04 -04:00 • committed by Andreas Kling
commit dbf4b189a4
Notes: github-actions[bot] 2025-04-06 11:46:09 +00:00
9 changed files with 44 additions and 56 deletions
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4
UI/AppKit/Interface/LadybirdWebView.mm
View file

@ -631,7 +631,7 @@ static void copy_data_to_clipboard(StringView data, NSPasteboardType pasteboard_
TemporaryChange change_url { m_context_menu_search_text, move(selected_text) };
if (m_context_menu_search_text.has_value()) {
auto action_text = WebView::format_search_query_for_display(search_engine->query_url, *m_context_menu_search_text);
auto action_text = search_engine->format_search_query_for_display(*m_context_menu_search_text);
[search_selected_text_menu_item setTitle:Ladybird::string_to_ns_string(action_text)];
[search_selected_text_menu_item setHidden:NO];
} else {
@ -1135,7 +1135,7 @@ static void copy_data_to_clipboard(StringView data, NSPasteboardType pasteboard_
if (!search_engine.has_value())
return;
auto url_string = MUST(String::formatted(search_engine->query_url, URL::percent_encode(*m_context_menu_search_text)));
auto url_string = search_engine->format_search_query_for_navigation(*m_context_menu_search_text);
auto url = URL::Parser::basic_parse(url_string);
VERIFY(url.has_value());
[self.observer onCreateNewTab:url.release_value() activateTab:Web::HTML::ActivateTab::Yes];