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LibWeb: Support X-Content-Type-Options to opt out of MIME type sniffing

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Brendan Coles 2021-05-19 13:37:36 +00:00 • committed by Linus Groh
parent 0681086cad
commit 076cd58817
1 changed files with 6 additions and 1 deletions
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5
Userland/Libraries/LibWeb/Loader/Resource.cpp
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@ -81,9 +81,14 @@ void Resource::did_load(Badge<ResourceLoader>, ReadonlyBytes data, const HashMap
} else if (url().protocol() == "data" && !url().data_mime_type().is_empty()) {
dbgln_if(RESOURCE_DEBUG, "This is a data URL with mime-type _{}_", url().data_mime_type());
m_mime_type = url().data_mime_type();
} else {
auto content_type_options = headers.get("X-Content-Type-Options");
if (content_type_options.value_or("").equals_ignoring_case("nosniff")) {
m_mime_type = "text/plain";
} else {
m_mime_type = Core::guess_mime_type_based_on_filename(url().path());
}
}
m_encoding = {};
if (content_type.has_value()) {