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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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
#include "ScriptLoadRequest.h"
#include "GeckoProfiler.h"
#include "mozilla/dom/Document.h"
#include "mozilla/dom/ScriptLoadContext.h"
#include "mozilla/dom/WorkerLoadContext.h"
#include "mozilla/dom/ScriptSettings.h"
#include "mozilla/HoldDropJSObjects.h"
#include "mozilla/StaticPrefs_dom.h"
#include "mozilla/Unused.h"
#include "mozilla/Utf8.h" // mozilla::Utf8Unit
#include "js/SourceText.h"
#include "ModuleLoadRequest.h"
#include "nsContentUtils.h"
#include "nsICacheInfoChannel.h"
#include "nsIClassOfService.h"
#include "nsISupportsPriority.h"
using JS::SourceText;
namespace JS::loader {
//////////////////////////////////////////////////////////////
// ScriptFetchOptions
//////////////////////////////////////////////////////////////
NS_IMPL_CYCLE_COLLECTION(ScriptFetchOptions, mTriggeringPrincipal)
ScriptFetchOptions::ScriptFetchOptions(
mozilla::CORSMode aCORSMode, const nsAString& aNonce,
mozilla::dom::RequestPriority aFetchPriority,
const ParserMetadata aParserMetadata, nsIPrincipal* aTriggeringPrincipal)
: mCORSMode(aCORSMode),
mNonce(aNonce),
mFetchPriority(aFetchPriority),
mParserMetadata(aParserMetadata),
mTriggeringPrincipal(aTriggeringPrincipal) {}
ScriptFetchOptions::~ScriptFetchOptions() = default;
//////////////////////////////////////////////////////////////
// ScriptLoadRequest
//////////////////////////////////////////////////////////////
NS_INTERFACE_MAP_BEGIN_CYCLE_COLLECTION(ScriptLoadRequest)
NS_INTERFACE_MAP_ENTRY(nsISupports)
NS_INTERFACE_MAP_END
NS_IMPL_CYCLE_COLLECTING_ADDREF(ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTING_RELEASE(ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_CLASS(ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_UNLINK_BEGIN(ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_UNLINK(mFetchOptions, mCacheInfo, mLoadContext,
mLoadedScript)
tmp->mScriptForBytecodeEncoding = nullptr;
tmp->DropBytecodeCacheReferences();
NS_IMPL_CYCLE_COLLECTION_UNLINK_END
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_BEGIN(ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE(mFetchOptions, mCacheInfo, mLoadContext,
mLoadedScript)
NS_IMPL_CYCLE_COLLECTION_TRAVERSE_END
NS_IMPL_CYCLE_COLLECTION_TRACE_BEGIN(ScriptLoadRequest)
NS_IMPL_CYCLE_COLLECTION_TRACE_JS_MEMBER_CALLBACK(mScriptForBytecodeEncoding)
NS_IMPL_CYCLE_COLLECTION_TRACE_END
ScriptLoadRequest::ScriptLoadRequest(
ScriptKind aKind, nsIURI* aURI,
mozilla::dom::ReferrerPolicy aReferrerPolicy,
ScriptFetchOptions* aFetchOptions, const SRIMetadata& aIntegrity,
nsIURI* aReferrer, LoadContextBase* aContext)
: mKind(aKind),
mState(State::CheckingCache),
mFetchSourceOnly(false),
mReferrerPolicy(aReferrerPolicy),
mFetchOptions(aFetchOptions),
mIntegrity(aIntegrity),
mReferrer(aReferrer),
mURI(aURI),
mLoadContext(aContext),
mEarlyHintPreloaderId(0) {
MOZ_ASSERT(mFetchOptions);
if (mLoadContext) {
mLoadContext->SetRequest(this);
}
}
ScriptLoadRequest::~ScriptLoadRequest() { DropJSObjects(this); }
void ScriptLoadRequest::SetReady() {
MOZ_ASSERT(!IsFinished());
mState = State::Ready;
}
void ScriptLoadRequest::Cancel() {
mState = State::Canceled;
if (HasScriptLoadContext()) {
GetScriptLoadContext()->MaybeCancelOffThreadScript();
}
}
void ScriptLoadRequest::DropBytecodeCacheReferences() {
mCacheInfo = nullptr;
DropJSObjects(this);
}
bool ScriptLoadRequest::HasScriptLoadContext() const {
return HasLoadContext() && mLoadContext->IsWindowContext();
}
bool ScriptLoadRequest::HasWorkerLoadContext() const {
return HasLoadContext() && mLoadContext->IsWorkerContext();
}
mozilla::dom::ScriptLoadContext* ScriptLoadRequest::GetScriptLoadContext() {
MOZ_ASSERT(mLoadContext);
return mLoadContext->AsWindowContext();
}
const mozilla::dom::ScriptLoadContext* ScriptLoadRequest::GetScriptLoadContext()
const {
MOZ_ASSERT(mLoadContext);
return mLoadContext->AsWindowContext();
}
mozilla::loader::SyncLoadContext* ScriptLoadRequest::GetSyncLoadContext() {
MOZ_ASSERT(mLoadContext);
return mLoadContext->AsSyncContext();
}
mozilla::dom::WorkerLoadContext* ScriptLoadRequest::GetWorkerLoadContext() {
MOZ_ASSERT(mLoadContext);
return mLoadContext->AsWorkerContext();
}
mozilla::dom::WorkletLoadContext* ScriptLoadRequest::GetWorkletLoadContext() {
MOZ_ASSERT(mLoadContext);
return mLoadContext->AsWorkletContext();
}
ModuleLoadRequest* ScriptLoadRequest::AsModuleRequest() {
MOZ_ASSERT(IsModuleRequest());
return static_cast<ModuleLoadRequest*>(this);
}
const ModuleLoadRequest* ScriptLoadRequest::AsModuleRequest() const {
MOZ_ASSERT(IsModuleRequest());
return static_cast<const ModuleLoadRequest*>(this);
}
bool ScriptLoadRequest::IsCacheable() const {
if (HasScriptLoadContext() && GetScriptLoadContext()->mIsInline) {
return false;
}
return !mExpirationTime.IsExpired();
}
void ScriptLoadRequest::CacheEntryFound(LoadedScript* aLoadedScript) {
MOZ_ASSERT(IsCheckingCache());
MOZ_ASSERT(mURI);
mLoadedScript = aLoadedScript;
MOZ_ASSERT(mFetchOptions->IsCompatible(mLoadedScript->GetFetchOptions()));
switch (mKind) {
case ScriptKind::eClassic:
case ScriptKind::eImportMap:
MOZ_ASSERT(mLoadedScript->IsClassicScript());
break;
case ScriptKind::eModule:
MOZ_ASSERT(mLoadedScript->IsModuleScript());
break;
case ScriptKind::eEvent:
MOZ_ASSERT_UNREACHABLE("EventScripts are not using ScriptLoadRequest");
break;
}
mState = State::Ready;
}
void ScriptLoadRequest::NoCacheEntryFound() {
MOZ_ASSERT(IsCheckingCache());
MOZ_ASSERT(mURI);
// At the time where we check in the cache, the mBaseURL is not set, as this
// is resolved by the network. Thus we use the mURI, for checking the cache
// and later replace the mBaseURL using what the Channel->GetURI will provide.
switch (mKind) {
case ScriptKind::eClassic:
case ScriptKind::eImportMap:
mLoadedScript = new ClassicScript(mReferrerPolicy, mFetchOptions, mURI);
break;
case ScriptKind::eModule:
mLoadedScript = new ModuleScript(mReferrerPolicy, mFetchOptions, mURI);
break;
case ScriptKind::eEvent:
MOZ_ASSERT_UNREACHABLE("EventScripts are not using ScriptLoadRequest");
break;
}
mState = State::Fetching;
}
void ScriptLoadRequest::SetPendingFetchingError() {
MOZ_ASSERT(IsCheckingCache());
mState = State::PendingFetchingError;
}
void ScriptLoadRequest::MarkScriptForBytecodeEncoding(JSScript* aScript) {
MOZ_ASSERT(!IsModuleRequest());
MOZ_ASSERT(!mScriptForBytecodeEncoding);
MarkForBytecodeEncoding();
mScriptForBytecodeEncoding = aScript;
HoldJSObjects(this);
}
static bool IsInternalURIScheme(nsIURI* uri) {
return uri->SchemeIs("moz-extension") || uri->SchemeIs("resource") ||
uri->SchemeIs("chrome");
}
void ScriptLoadRequest::SetBaseURLFromChannelAndOriginalURI(
nsIChannel* aChannel, nsIURI* aOriginalURI) {
// Fixup moz-extension: and resource: URIs, because the channel URI will
// point to file:, which won't be allowed to load.
if (aOriginalURI && IsInternalURIScheme(aOriginalURI)) {
mBaseURL = aOriginalURI;
} else {
aChannel->GetURI(getter_AddRefs(mBaseURL));
}
}
//////////////////////////////////////////////////////////////
// ScriptLoadRequestList
//////////////////////////////////////////////////////////////
ScriptLoadRequestList::~ScriptLoadRequestList() { CancelRequestsAndClear(); }
void ScriptLoadRequestList::CancelRequestsAndClear() {
while (!isEmpty()) {
RefPtr<ScriptLoadRequest> first = StealFirst();
first->Cancel();
// And just let it go out of scope and die.
}
}
#ifdef DEBUG
bool ScriptLoadRequestList::Contains(ScriptLoadRequest* aElem) const {
for (const ScriptLoadRequest* req = getFirst(); req; req = req->getNext()) {
if (req == aElem) {
return true;
}
}
return false;
}
#endif // DEBUG
} // namespace JS::loader