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Issue #2641 - Speculative load changes for referrerpolicy

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This commit is contained in:
Moonchild 2024-10-20 09:35:39 +02:00 • committed by roytam1
commit f6f046930d
20 changed files with 262 additions and 128 deletions
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28
dom/base/nsContentSink.cpp
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@ -472,6 +472,7 @@ nsContentSink::ProcessLinkHeader(const nsAString& aLinkData)
nsAutoString media;
nsAutoString anchor;
nsAutoString crossOrigin;
nsAutoString referrerPolicy;
nsAutoString destination;
crossOrigin.SetIsVoid(true);
@ -660,6 +661,15 @@ nsContentSink::ProcessLinkHeader(const nsAString& aLinkData)
destination = value;
destination.StripWhitespace();
}
} else if (attr.LowerCaseEqualsLiteral("referrerpolicy")) {
// https://html.spec.whatwg.org/multipage/urls-and-fetching.html#referrer-policy-attribute
// The spec says that the referrer policy attribute is an enumerated attribute,
// case insensitive and includes the empty string.
// We will parse the value with AttributeReferrerPolicyFromString
// later, which will handle parsing it as an enumerated attribute.
if (referrerPolicy.IsEmpty()) {
referrerPolicy = value;
}
}
}
}
@ -673,7 +683,7 @@ nsContentSink::ProcessLinkHeader(const nsAString& aLinkData)
rv = ProcessLink(anchor, href, rel,
// prefer RFC 5987 variant over non-I18zed version
titleStar.IsEmpty() ? title : titleStar,
type, media, crossOrigin, destination);
type, media, crossOrigin, referrerPolicy, destination);
}
href.Truncate();
@ -682,6 +692,7 @@ nsContentSink::ProcessLinkHeader(const nsAString& aLinkData)
type.Truncate();
media.Truncate();
anchor.Truncate();
referrerPolicy.Truncate();
crossOrigin.SetIsVoid(true);
destination.Truncate();
@ -696,7 +707,7 @@ nsContentSink::ProcessLinkHeader(const nsAString& aLinkData)
rv = ProcessLink(anchor, href, rel,
// prefer RFC 5987 variant over non-I18zed version
titleStar.IsEmpty() ? title : titleStar,
type, media, crossOrigin, destination);
type, media, crossOrigin, referrerPolicy, destination);
}
return rv;
@ -708,6 +719,7 @@ nsContentSink::ProcessLink(const nsSubstring& aAnchor, const nsSubstring& aHref,
const nsSubstring& aRel, const nsSubstring& aTitle,
const nsSubstring& aType, const nsSubstring& aMedia,
const nsSubstring& aCrossOrigin,
const nsAString& aReferrerPolicy,
const nsSubstring& aDestination)
{
uint32_t linkTypes =
@ -749,7 +761,7 @@ nsContentSink::ProcessLink(const nsSubstring& aAnchor, const nsSubstring& aHref,
bool isAlternate = linkTypes & nsStyleLinkElement::eALTERNATE;
return ProcessStyleLink(nullptr, aHref, isAlternate, aTitle, aType,
aMedia);
aMedia, aReferrerPolicy);
}
nsresult
@ -758,7 +770,8 @@ nsContentSink::ProcessStyleLink(nsIContent* aElement,
bool aAlternate,
const nsSubstring& aTitle,
const nsSubstring& aType,
const nsSubstring& aMedia)
const nsSubstring& aMedia,
const nsSubstring& aReferrerPolicy)
{
if (aAlternate && aTitle.IsEmpty()) {
// alternates must have title return without error, for now
@ -797,13 +810,18 @@ nsContentSink::ProcessStyleLink(nsIContent* aElement,
("nsContentSink::ProcessStyleLink, integrity=%s",
NS_ConvertUTF16toUTF8(integrity).get()));
}
mozilla::net::ReferrerPolicy referrerPolicy =
mozilla::net::AttributeReferrerPolicyFromString(aReferrerPolicy);
if (referrerPolicy == net::RP_Unset) {
referrerPolicy = mDocument->GetReferrerPolicy();
}
// If this is a fragment parser, we don't want to observe.
// We don't support CORS for processing instructions
bool isAlternate;
bool isExplicitlyEnabled;
rv = mCSSLoader->LoadStyleLink(aElement, url, aTitle, aMedia, aAlternate,
CORS_NONE, mDocument->GetReferrerPolicy(),
CORS_NONE, referrerPolicy,
integrity, mRunsToCompletion ? nullptr : this,
&isAlternate, &isExplicitlyEnabled);
NS_ENSURE_SUCCESS(rv, rv);