diff options
Diffstat (limited to 'uriloader/preload/PreloadHashKey.cpp')
| -rw-r--r-- | uriloader/preload/PreloadHashKey.cpp | 213 |
1 files changed, 213 insertions, 0 deletions
diff --git a/uriloader/preload/PreloadHashKey.cpp b/uriloader/preload/PreloadHashKey.cpp new file mode 100644 index 0000000000..989bb16949 --- /dev/null +++ b/uriloader/preload/PreloadHashKey.cpp @@ -0,0 +1,213 @@ +/* This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#include "PreloadHashKey.h" + +#include "mozilla/dom/Element.h" // StringToCORSMode +#include "mozilla/css/SheetLoadData.h" +#include "mozilla/dom/ReferrerPolicyBinding.h" +#include "nsIPrincipal.h" +#include "nsIReferrerInfo.h" + +namespace mozilla { + +PreloadHashKey::PreloadHashKey(const nsIURI* aKey, ResourceType aAs) + : nsURIHashKey(aKey), mAs(aAs) {} + +PreloadHashKey::PreloadHashKey(const PreloadHashKey* aKey) + : nsURIHashKey(aKey->mKey) { + *this = *aKey; +} + +PreloadHashKey::PreloadHashKey(PreloadHashKey&& aToMove) + : nsURIHashKey(std::move(aToMove)) { + mAs = std::move(aToMove.mAs); + mCORSMode = std::move(aToMove.mCORSMode); + mPrincipal = std::move(aToMove.mPrincipal); + + switch (mAs) { + case ResourceType::SCRIPT: + mScript = std::move(aToMove.mScript); + break; + case ResourceType::STYLE: + mStyle = std::move(aToMove.mStyle); + break; + case ResourceType::IMAGE: + break; + case ResourceType::FONT: + break; + case ResourceType::FETCH: + break; + case ResourceType::NONE: + break; + } +} + +PreloadHashKey& PreloadHashKey::operator=(const PreloadHashKey& aOther) { + MOZ_ASSERT(mAs == ResourceType::NONE || aOther.mAs == ResourceType::NONE, + "Assigning more than once, only reset is allowed"); + + nsURIHashKey::operator=(aOther); + + mAs = aOther.mAs; + mCORSMode = aOther.mCORSMode; + mPrincipal = aOther.mPrincipal; + + switch (mAs) { + case ResourceType::SCRIPT: + mScript = aOther.mScript; + break; + case ResourceType::STYLE: + mStyle = aOther.mStyle; + break; + case ResourceType::IMAGE: + break; + case ResourceType::FONT: + break; + case ResourceType::FETCH: + break; + case ResourceType::NONE: + break; + } + + return *this; +} + +// static +PreloadHashKey PreloadHashKey::CreateAsScript( + nsIURI* aURI, CORSMode aCORSMode, JS::loader::ScriptKind aScriptKind) { + PreloadHashKey key(aURI, ResourceType::SCRIPT); + key.mCORSMode = aCORSMode; + + key.mScript.mScriptKind = aScriptKind; + + return key; +} + +// static +PreloadHashKey PreloadHashKey::CreateAsScript(nsIURI* aURI, + const nsAString& aCrossOrigin, + const nsAString& aType) { + JS::loader::ScriptKind scriptKind = JS::loader::ScriptKind::eClassic; + if (aType.LowerCaseEqualsASCII("module")) { + scriptKind = JS::loader::ScriptKind::eModule; + } + CORSMode crossOrigin = dom::Element::StringToCORSMode(aCrossOrigin); + return CreateAsScript(aURI, crossOrigin, scriptKind); +} + +// static +PreloadHashKey PreloadHashKey::CreateAsStyle( + nsIURI* aURI, nsIPrincipal* aPrincipal, CORSMode aCORSMode, + css::SheetParsingMode aParsingMode) { + PreloadHashKey key(aURI, ResourceType::STYLE); + key.mCORSMode = aCORSMode; + key.mPrincipal = aPrincipal; + + key.mStyle.mParsingMode = aParsingMode; + + return key; +} + +// static +PreloadHashKey PreloadHashKey::CreateAsStyle( + css::SheetLoadData& aSheetLoadData) { + return CreateAsStyle(aSheetLoadData.mURI, aSheetLoadData.mTriggeringPrincipal, + aSheetLoadData.mSheet->GetCORSMode(), + aSheetLoadData.mSheet->ParsingMode()); +} + +// static +PreloadHashKey PreloadHashKey::CreateAsImage(nsIURI* aURI, + nsIPrincipal* aPrincipal, + CORSMode aCORSMode) { + PreloadHashKey key(aURI, ResourceType::IMAGE); + key.mCORSMode = aCORSMode; + key.mPrincipal = aPrincipal; + + return key; +} + +// static +PreloadHashKey PreloadHashKey::CreateAsFetch(nsIURI* aURI, CORSMode aCORSMode) { + PreloadHashKey key(aURI, ResourceType::FETCH); + key.mCORSMode = aCORSMode; + + return key; +} + +// static +PreloadHashKey PreloadHashKey::CreateAsFetch(nsIURI* aURI, + const nsAString& aCrossOrigin) { + return CreateAsFetch(aURI, dom::Element::StringToCORSMode(aCrossOrigin)); +} + +PreloadHashKey PreloadHashKey::CreateAsFont(nsIURI* aURI, CORSMode aCORSMode) { + PreloadHashKey key(aURI, ResourceType::FONT); + key.mCORSMode = aCORSMode; + + return key; +} + +bool PreloadHashKey::KeyEquals(KeyTypePointer aOther) const { + if (mAs != aOther->mAs || mCORSMode != aOther->mCORSMode) { + return false; + } + + if (!mPrincipal != !aOther->mPrincipal) { + // One or the other has a principal, but not both... not equal + return false; + } + + if (mPrincipal && !mPrincipal->Equals(aOther->mPrincipal)) { + return false; + } + + if (!nsURIHashKey::KeyEquals( + static_cast<const nsURIHashKey*>(aOther)->GetKey())) { + return false; + } + + switch (mAs) { + case ResourceType::SCRIPT: + if (mScript.mScriptKind != aOther->mScript.mScriptKind) { + return false; + } + break; + case ResourceType::STYLE: { + if (mStyle.mParsingMode != aOther->mStyle.mParsingMode) { + return false; + } + break; + } + case ResourceType::IMAGE: + // No more checks needed. The image cache key consists of the document + // (which we are scoped into), origin attributes (which we compare as part + // of the principal check) and the URL. imgLoader::ValidateEntry compares + // CORS, referrer info and principal, which we do by default. + break; + case ResourceType::FONT: + break; + case ResourceType::FETCH: + // No more checks needed. + break; + case ResourceType::NONE: + break; + } + + return true; +} + +// static +PLDHashNumber PreloadHashKey::HashKey(KeyTypePointer aKey) { + PLDHashNumber hash = nsURIHashKey::HashKey(aKey->mKey); + + // Enough to use the common attributes + hash = AddToHash(hash, static_cast<uint32_t>(aKey->mAs)); + hash = AddToHash(hash, static_cast<uint32_t>(aKey->mCORSMode)); + + return hash; +} + +} // namespace mozilla |