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LibWeb: Handle JavaScript source code with non-UTF-8 encoding

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When fetching scripts in HTMLScriptElement's "prepare a script"
algorithm, we now re-encode the script sources to UTF-8.
This commit is contained in:
Andreas Kling 2022-09-17 17:44:11 +02:00
parent da451467b1
commit 83c69fa62e
2 changed files with 37 additions and 22 deletions
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50
Userland/Libraries/LibWeb/HTML/HTMLScriptElement.cpp
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@ -295,26 +295,8 @@ void HTMLScriptElement::prepare_script()
if (parser_document)
begin_delaying_document_load_event(*parser_document);
ResourceLoader::the().load(
request,
[this, url](auto data, auto&, auto) {
if (data.is_null()) {
dbgln("HTMLScriptElement: Failed to load {}", url);
return;
}
// FIXME: This is all ad-hoc and needs work.
auto script = ClassicScript::create(url.to_string(), data, document().relevant_settings_object(), AK::URL());
// When the chosen algorithm asynchronously completes, set the script's script to the result. At that time, the script is ready.
m_script = script;
script_became_ready();
},
[this](auto&, auto) {
m_failed_to_load = true;
dbgln("HONK! Failed to load script, but ready nonetheless.");
script_became_ready();
});
auto resource = ResourceLoader::the().load_resource(Resource::Type::Generic, request);
set_resource(resource);
} else if (m_script_type == ScriptType::Module) {
// FIXME: -> "module"
// Fetch an external module script graph given url, settings object, and options.
@ -439,6 +421,34 @@ void HTMLScriptElement::prepare_script()
}
}
void HTMLScriptElement::resource_did_load()
{
// FIXME: This is all ad-hoc and needs work.
auto data = resource()->encoded_data();
// If the resource has an explicit encoding (i.e from a HTTP Content-Type header)
// we have to re-encode it to UTF-8.
if (resource()->has_encoding()) {
if (auto* codec = TextCodec::decoder_for(resource()->encoding().value())) {
data = codec->to_utf8(data).to_byte_buffer();
}
}
auto script = ClassicScript::create(resource()->url().to_string(), data, document().relevant_settings_object(), AK::URL());
// When the chosen algorithm asynchronously completes, set the script's script to the result. At that time, the script is ready.
m_script = script;
script_became_ready();
}
void HTMLScriptElement::resource_did_fail()
{
m_failed_to_load = true;
dbgln("HONK! Failed to load script, but ready nonetheless.");
script_became_ready();
}
void HTMLScriptElement::script_became_ready()
{
m_script_ready = true;