Bug Summary

File:Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/Source/WebCore/workers/WorkerOrWorkletScriptController.cpp
Warning:line 462, column 60
Call argument is uncounted and unsafe

Annotated Source Code

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clang -cc1 -cc1 -triple arm64-apple-ios26.2.0-simulator -O3 -Wundef-prefix=TARGET_OS_ -Werror=undef-prefix -Wdeprecated-objc-isa-usage -Werror=deprecated-objc-isa-usage -Werror=implicit-function-declaration -analyze -disable-free -clear-ast-before-backend -disable-llvm-verifier -discard-value-names -main-file-name UnifiedSource499.cpp -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=osx -analyzer-checker=security.insecureAPI.decodeValueOfObjCType -analyzer-checker=deadcode -analyzer-checker=cplusplus -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer 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/Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/WebCore.build/Release-iphonesimulator/WebCore.build/WebCore-generated-files.hmap -iquote /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/WebCore.build/Release-iphonesimulator/WebCore.build/WebCore-project-headers.hmap -isystem /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/Source/WebCore/PAL/ThirdParty/dav1d/include -isystem /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/SDKAdditions/usr/include -iframework /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/SDKAdditions/System/Library/Frameworks -iframework /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitLibraries/SDKs/iphonesimulator26.0-additions.sdk/System/Library/PrivateFrameworks -iframework /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/System/Library/Frameworks -include-pch /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/PrecompiledHeaders/SharedPrecompiledHeaders/11721353671419897710/WebCorePrefix.h.gch -D _LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D NDEBUG -D BUILDING_WEBKIT -D GL_SILENCE_DEPRECATION=1 -D GLES_SILENCE_DEPRECATION=1 -D __clang_analyzer__ -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/WebCore.build/Release-iphonesimulator/WebCore.build/WebCore-own-target-headers.hmap -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/WebCore.build/Release-iphonesimulator/WebCore.build/WebCore-all-target-headers.hmap -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/include -I PAL -I ForwardingHeaders -I /usr/include/libxslt -I /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/include/libxml2 -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/DerivedSources/WebCore -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/usr/local/include -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/usr/local/include/WebKitAdditions -I /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/local/include/WebKitAdditions -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/usr/local/include -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitLibraries/SDKs/iphonesimulator26.0-additions.sdk/usr/local/include -I /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/local/include -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/usr/local/include/webrtc -I /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/local/include/webrtc -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/usr/local/include/webm -I /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/local/include/webm -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/PAL.build/PAL.build/DerivedSources -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/PAL.build/Release-iphonesimulator/PAL.build/DerivedSources -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/Source/WebCore -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/WebCore.build/Release-iphonesimulator/WebCore.build/DerivedSources-normal/arm64 -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/WebCore.build/Release-iphonesimulator/WebCore.build/DerivedSources/arm64 -I /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/WebCore.build/Release-iphonesimulator/WebCore.build/DerivedSources -F/Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator -F/Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator -I/usr/local/include -stdlib=libc++ -internal-isystem /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/include/c++/v1 -internal-isystem /Applications/Xcode.app/Contents/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator26.2.sdk/usr/local/include 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-Wno-unused-parameter -Wunused-variable -Wunused-value -Wempty-body -Wuninitialized -Wno-unknown-pragmas -Wno-shadow -Wno-four-char-constants -Wno-conversion -Wconstant-conversion -Wint-conversion -Wbool-conversion -Wenum-conversion -Wno-float-conversion -Wnon-literal-null-conversion -Wobjc-literal-conversion -Wsign-compare -Wno-shorten-64-to-32 -Wnewline-eof -Wno-c++11-extensions -Wno-implicit-fallthrough -Wdeprecated-declarations -Winvalid-offsetof -Wno-sign-conversion -Winfinite-recursion -Wmove -Wcomma -Wblock-capture-autoreleasing -Wstrict-prototypes -Wrange-loop-analysis -Wno-semicolon-before-method-body -Wall -Wc99-designator -Wconditional-uninitialized -Wextra -Wdeprecated-enum-enum-conversion -Wdeprecated-enum-float-conversion -Wenum-float-conversion -Wfinal-dtor-non-final-class -Wformat=2 -Wmisleading-indentation -Wpointer-to-int-cast -Wreorder-init-list -Wundef -Wunused-but-set-variable -Wvla -Werror=unguarded-availability -Wno-elaborated-enum-base -Wcast-qual -Wchar-subscripts -Wextra-tokens -Winit-self -Wmissing-noreturn -Wpacked -Wpointer-arith -Wredundant-decls -Wwrite-strings -Wexit-time-destructors -Wglobal-constructors -Wtautological-compare -Wimplicit-fallthrough -Wvla -Wno-unknown-warning-option -Wliteral-conversion -Wthread-safety -Wno-profile-instr-out-of-date -Wno-profile-instr-unprofiled -Wno-backend-plugin -Wunsafe-buffer-usage -std=c++2b -fdeprecated-macro -ferror-limit 19 -fmacro-backtrace-limit=0 -fvisibility=hidden -fvisibility-inlines-hidden -stack-protector 1 -fblocks -fencode-extended-block-signature -fno-rtti -fregister-global-dtors-with-atexit -fgnuc-version=4.2.1 -fno-cxx-modules -fno-implicit-modules -fskip-odr-check-in-gmf -fpascal-strings -fmax-type-align=16 -fdiagnostics-show-note-include-stack -vectorize-loops -vectorize-slp -fsafe-buffer-usage-suggestions -analyzer-output=html -analyzer-config report-in-main-source-file=true -analyzer-config nullability:NoDiagnoseCallsToSystemHeaders=true -analyzer-checker optin.osx.cocoa.localizability.NonLocalizedStringChecker -analyzer-checker security.insecureAPI.UncheckedReturn -analyzer-checker security.insecureAPI.getpw -analyzer-checker security.insecureAPI.gets -analyzer-checker security.insecureAPI.mkstemp -analyzer-checker security.insecureAPI.mktemp -analyzer-disable-checker security.insecureAPI.rand -analyzer-disable-checker security.insecureAPI.strcpy -analyzer-checker security.insecureAPI.vfork -analyzer-disable-checker alpha,apiModeling,core,cplusplus,deadcode,debug,fuchsia,nullability,optin,osx,security,unix,webkit -analyzer-checker alpha.webkit.ForwardDeclChecker,alpha.webkit.MemoryUnsafeCastChecker,alpha.webkit.NoDeleteChecker,alpha.webkit.NoUncheckedPtrMemberChecker,alpha.webkit.NoUnretainedMemberChecker,alpha.webkit.RetainPtrCtorAdoptChecker,alpha.webkit.UncheckedCallArgsChecker,alpha.webkit.UncheckedLocalVarsChecker,alpha.webkit.UncountedCallArgsChecker,alpha.webkit.UncountedLocalVarsChecker,alpha.webkit.UnretainedCallArgsChecker,alpha.webkit.UnretainedLambdaCapturesChecker,alpha.webkit.UnretainedLocalVarsChecker,webkit.NoUncountedMemberChecker,webkit.RefCntblBaseVirtualDtor,webkit.UncountedLambdaCapturesChecker -analyzer-config max-nodes=10000000 -analyzer-config verbose-report-filename=true -fdwarf2-cfi-asm -o /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/scan-build-output/StaticAnalyzer/WebCore/WebCore/normal/arm64/UnifiedSource499.plist -x c++ /Volumes/Data/worker/Apple-iOS-26-Safer-CPP-Checks-EWS/build/WebKitBuild/Release-iphonesimulator/DerivedSources/WebCore/unified-sources/UnifiedSource499.cpp
1/*
2 * Copyright (C) 2008-2021 Apple Inc. All rights reserved.
3 * Copyright (C) 2011, 2012 Google Inc. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
15 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
17 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR
18 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
19 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
20 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
21 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
22 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
24 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25 */
26
27#include "config.h"
28#include "WorkerOrWorkletScriptController.h"
29
30#include "CommonVM.h"
31#include "DedicatedWorkerGlobalScope.h"
32#include "EventLoop.h"
33#include "InspectorInstrumentation.h"
34#include "JSAudioWorkletGlobalScope.h"
35#include "JSDOMBinding.h"
36#include "JSDedicatedWorkerGlobalScope.h"
37#include "JSEventTarget.h"
38#include "JSExecState.h"
39#include "JSPaintWorkletGlobalScope.h"
40#include "JSServiceWorkerGlobalScope.h"
41#include "JSSharedWorkerGlobalScope.h"
42#include "ModuleFetchFailureKind.h"
43#include "ModuleFetchParameters.h"
44#include "ScriptSourceCode.h"
45#include "WebCoreJSClientData.h"
46#include "WorkerConsoleClient.h"
47#include "WorkerModuleScriptLoader.h"
48#include "WorkerOrWorkletThread.h"
49#include "WorkerRunLoop.h"
50#include "WorkerScriptFetcher.h"
51#include <JavaScriptCore/AbstractModuleRecord.h>
52#include <JavaScriptCore/BuiltinNames.h>
53#include <JavaScriptCore/Completion.h>
54#include <JavaScriptCore/DeferTermination.h>
55#include <JavaScriptCore/DeferredWorkTimer.h>
56#include <JavaScriptCore/Exception.h>
57#include <JavaScriptCore/ExceptionHelpers.h>
58#include <JavaScriptCore/GCActivityCallback.h>
59#include <JavaScriptCore/JSGlobalProxyInlines.h>
60#include <JavaScriptCore/JSInternalPromise.h>
61#include <JavaScriptCore/JSLock.h>
62#include <JavaScriptCore/JSModuleRecord.h>
63#include <JavaScriptCore/JSNativeStdFunction.h>
64#include <JavaScriptCore/JSScriptFetchParameters.h>
65#include <JavaScriptCore/JSScriptFetcher.h>
66#include <JavaScriptCore/ScriptCallStack.h>
67#include <JavaScriptCore/StrongInlines.h>
68#include <JavaScriptCore/SyntheticModuleRecord.h>
69#include <JavaScriptCore/VMTrapsInlines.h>
70#include <JavaScriptCore/WebAssemblyModuleRecord.h>
71#include <wtf/TZoneMallocInlines.h>
72
73namespace WebCore {
74
75WTF_MAKE_TZONE_ALLOCATED_IMPL(WorkerOrWorkletScriptController)::bmalloc::api::HeapRef WorkerOrWorkletScriptController::s_heapRef
; const TZoneSpecification WorkerOrWorkletScriptController::s_heapSpec
= { &WorkerOrWorkletScriptController::s_heapRef, TZoneSpecification
::encodeSize<WorkerOrWorkletScriptController>(), TZoneSpecification
::encodeAlignment<WorkerOrWorkletScriptController>(), TZoneSpecification
::encodeCategory<WorkerOrWorkletScriptController>(), ::
bmalloc::api::compactAllocationMode<WorkerOrWorkletScriptController
>(), TZoneSpecification::encodeDescriptor<WorkerOrWorkletScriptController
>(), }; void* WorkerOrWorkletScriptController::operatorNewSlow
(size_t size) { if constexpr (::bmalloc::api::compactAllocationMode
<WorkerOrWorkletScriptController>() == CompactAllocationMode
::Compact) return ::bmalloc::api::tzoneAllocateCompactSlow(size
, s_heapSpec); return ::bmalloc::api::tzoneAllocateNonCompactSlow
(size, s_heapSpec); } using __makeBtzoneMallocedInlineMacroSemicolonifier
__attribute__((unused)) = int
;
76
77using namespace JSC;
78
79WorkerOrWorkletScriptController::WorkerOrWorkletScriptController(WorkerThreadType type, Ref<VM>&& vm, WorkerOrWorkletGlobalScope* globalScope)
80 : m_vm(WTF::move(vm))
81 , m_globalScope(globalScope)
82 , m_globalScopeWrapper(*m_vm)
83{
84 if (!isMainThread() || m_vm != &commonVM()) {
85 m_vm->heap.acquireAccess(); // It's not clear that we have good discipline for heap access, so turn it on permanently.
86 {
87 JSLockHolder lock(m_vm.get());
88 m_vm->ensureTerminationException();
89 m_vm->forbidExecutionOnTermination();
90 }
91
92 JSVMClientData::initNormalWorld(m_vm.get(), type);
93 }
94}
95
96WorkerOrWorkletScriptController::~WorkerOrWorkletScriptController()
97{
98 JSLockHolder lock(vm());
99 if (m_globalScopeWrapper) {
100 m_globalScopeWrapper->clearDOMGuardedObjects();
101 m_globalScopeWrapper->setConsoleClient(nullptr);
102
103 }
104 m_globalScopeWrapper.clear();
105 m_vm = nullptr;
106}
107
108void WorkerOrWorkletScriptController::attachDebugger(JSC::Debugger* debugger)
109{
110 initScriptIfNeeded();
111 debugger->attach(m_globalScopeWrapper.get());
112}
113
114void WorkerOrWorkletScriptController::detachDebugger(JSC::Debugger* debugger)
115{
116 debugger->detach(m_globalScopeWrapper.get(), JSC::Debugger::TerminatingDebuggingSession);
117}
118
119void WorkerOrWorkletScriptController::forbidExecution()
120{
121 ASSERT(m_globalScope->isContextThread())((void)0);
122 m_vm->setExecutionForbidden();
123}
124
125bool WorkerOrWorkletScriptController::isExecutionForbidden() const
126{
127 ASSERT(m_globalScope->isContextThread())((void)0);
128 return m_vm->executionForbidden();
129}
130
131void WorkerOrWorkletScriptController::scheduleExecutionTermination()
132{
133 {
134 // The mutex provides a memory barrier to ensure that once
135 // termination is scheduled, isTerminatingExecution() will
136 // accurately reflect that lexicalGlobalObject when called from another thread.
137 Locker locker { m_scheduledTerminationLock };
138 if (m_isTerminatingExecution)
139 return;
140
141 m_isTerminatingExecution = true;
142 }
143 if (m_vm != &commonVM())
144 m_vm->notifyNeedTermination();
145}
146
147bool WorkerOrWorkletScriptController::isTerminatingExecution() const
148{
149 // See comments in scheduleExecutionTermination regarding mutex usage.
150 Locker locker { m_scheduledTerminationLock };
151 return m_isTerminatingExecution;
152}
153
154void WorkerOrWorkletScriptController::releaseHeapAccess()
155{
156 m_vm->heap.releaseAccess();
157}
158
159void WorkerOrWorkletScriptController::acquireHeapAccess()
160{
161 m_vm->heap.acquireAccess();
162}
163
164void WorkerOrWorkletScriptController::addTimerSetNotification(JSC::JSRunLoopTimer::TimerNotificationCallback callback)
165{
166 auto processTimer = [&] (JSRunLoopTimer* timer) {
167 if (!timer)
168 return;
169 timer->addTimerSetNotification(callback);
170 };
171
172 processTimer(protect(m_vm->heap.fullActivityCallback()).get());
173 processTimer(protect(m_vm->heap.edenActivityCallback()).get());
174 processTimer(m_vm->deferredWorkTimer.ptr());
175}
176
177void WorkerOrWorkletScriptController::removeTimerSetNotification(JSC::JSRunLoopTimer::TimerNotificationCallback callback)
178{
179 auto processTimer = [&] (JSRunLoopTimer* timer) {
180 if (!timer)
181 return;
182 timer->removeTimerSetNotification(callback);
183 };
184
185 processTimer(protect(m_vm->heap.fullActivityCallback()).get());
186 processTimer(protect(m_vm->heap.edenActivityCallback()).get());
187 processTimer(m_vm->deferredWorkTimer.ptr());
188}
189
190void WorkerOrWorkletScriptController::setException(JSC::Exception* exception)
191{
192 JSC::JSGlobalObject* lexicalGlobalObject = m_globalScopeWrapper.get();
193 VM& vm = lexicalGlobalObject->vm();
194 auto scope = DECLARE_THROW_SCOPE(vm)JSC::ThrowScope((vm));
195 throwException(lexicalGlobalObject, scope, exception);
196}
197
198void WorkerOrWorkletScriptController::disableEval(const String& errorMessage)
199{
200 initScriptIfNeeded();
201 JSLockHolder lock { vm() };
202
203 m_globalScopeWrapper->setEvalEnabled(false, errorMessage);
204}
205
206void WorkerOrWorkletScriptController::disableWebAssembly(const String& errorMessage)
207{
208 initScriptIfNeeded();
209 JSLockHolder lock { vm() };
210
211 m_globalScopeWrapper->setWebAssemblyEnabled(false, errorMessage);
212}
213
214void WorkerOrWorkletScriptController::setTrustedTypesEnforcement(JSC::TrustedTypesEnforcement enforcement)
215{
216 initScriptIfNeeded();
217 JSLockHolder lock { vm() };
218
219 m_globalScopeWrapper->setTrustedTypesEnforcement(enforcement);
220}
221
222void WorkerOrWorkletScriptController::evaluate(const ScriptSourceCode& sourceCode, String* returnedExceptionMessage)
223{
224 if (isExecutionForbidden())
225 return;
226
227 VM& vm = this->vm();
228 NakedPtr<JSC::Exception> uncaughtException;
229 evaluate(sourceCode, uncaughtException, returnedExceptionMessage);
230 if ((uncaughtException && vm.isTerminationException(uncaughtException)) || isTerminatingExecution()) {
231 forbidExecution();
232 return;
233 }
234 if (uncaughtException) {
235 JSLockHolder lock(vm);
236 reportException(m_globalScopeWrapper.get(), uncaughtException);
237 }
238}
239
240void WorkerOrWorkletScriptController::evaluate(const ScriptSourceCode& sourceCode, NakedPtr<JSC::Exception>& returnedException, String* returnedExceptionMessage)
241{
242 if (isExecutionForbidden())
243 return;
244
245 initScriptIfNeeded();
246
247 auto& globalObject = *m_globalScopeWrapper.get();
248 VM& vm = globalObject.vm();
249 JSLockHolder lock { vm };
250
251 const SourceCode& jsSourceCode = sourceCode.jsSourceCode();
252 const URL& sourceURL = jsSourceCode.provider()->sourceOrigin().url();
253
254 RefPtr globalScope = m_globalScope.get();
255 InspectorInstrumentation::willEvaluateScript(*globalScope, sourceURL.string(), sourceCode.startLine(), sourceCode.startColumn());
256
257 JSExecState::profiledEvaluate(&globalObject, JSC::ProfilingReason::Other, jsSourceCode, m_globalScopeWrapper->globalThis(), returnedException);
258
259 InspectorInstrumentation::didEvaluateScript(*globalScope);
260
261 if ((returnedException && vm.isTerminationException(returnedException)) || isTerminatingExecution()) {
262 forbidExecution();
263 return;
264 }
265
266 if (returnedException) {
267 if (globalScope->canIncludeErrorDetails(sourceCode.cachedScript(), sourceCode.url().string())) {
268 // FIXME: It's not great that this can run arbitrary code to string-ify the value of the exception.
269 // Do we need to do anything to handle that properly, if it, say, raises another exception?
270 if (returnedExceptionMessage)
271 *returnedExceptionMessage = returnedException->value().toWTFString(&globalObject);
272 } else {
273 // Overwrite the detailed error with a generic error.
274 String genericErrorMessage { "Script error."_s };
275 if (returnedExceptionMessage)
276 *returnedExceptionMessage = genericErrorMessage;
277 returnedException = JSC::Exception::create(vm, createError(&globalObject, genericErrorMessage));
278 }
279 }
280}
281
282static Identifier jsValueToModuleKey(JSGlobalObject* lexicalGlobalObject, JSValue value)
283{
284 if (value.isSymbol())
285 return Identifier::fromUid(jsCast<Symbol*>(value)->privateName());
286 ASSERT(value.isString())((void)0);
287 return asString(value)->toIdentifier(lexicalGlobalObject);
288}
289
290JSC::JSValue WorkerOrWorkletScriptController::evaluateModule(const URL& sourceURL, JSC::AbstractModuleRecord& moduleRecord, JSC::JSValue awaitedValue, JSC::JSValue resumeMode)
291{
292 auto& globalObject = *m_globalScopeWrapper.get();
293 VM& vm = globalObject.vm();
294 JSLockHolder lock { vm };
295
296#if ENABLE(WEBASSEMBLY)(defined 1 && 1)
297 const bool isWasmModule = moduleRecord.inherits<WebAssemblyModuleRecord>();
298#else
299 constexpr bool isWasmModule = false;
300#endif
301
302 RefPtr globalScope = m_globalScope.get();
303 if (isWasmModule) {
304 // FIXME: Provide better inspector support for Wasm scripts.
305 InspectorInstrumentation::willEvaluateScript(*globalScope, sourceURL.string(), 1, 1);
306 } else if (moduleRecord.inherits<JSC::SyntheticModuleRecord>())
307 InspectorInstrumentation::willEvaluateScript(*globalScope, sourceURL.string(), 1, 1);
308 else {
309 auto* jsModuleRecord = jsCast<JSModuleRecord*>(&moduleRecord);
310 const auto& jsSourceCode = jsModuleRecord->sourceCode();
311 InspectorInstrumentation::willEvaluateScript(*globalScope, sourceURL.string(), jsSourceCode.firstLine().oneBasedInt(), jsSourceCode.startColumn().oneBasedInt());
312 }
313 auto returnValue = moduleRecord.evaluate(&globalObject, awaitedValue, resumeMode);
314 InspectorInstrumentation::didEvaluateScript(*globalScope);
315
316 return returnValue;
317}
318
319bool WorkerOrWorkletScriptController::loadModuleSynchronously(WorkerScriptFetcher& scriptFetcher, const ScriptSourceCode& sourceCode)
320{
321 if (isExecutionForbidden())
322 return false;
323
324 initScriptIfNeeded();
325
326 auto& globalObject = *m_globalScopeWrapper.get();
327 VM& vm = globalObject.vm();
328 JSLockHolder lock { vm };
329 auto scope = DECLARE_THROW_SCOPE(vm)JSC::ThrowScope((vm));
330
331 Ref protector { scriptFetcher };
332 {
333 auto* promise = JSExecState::loadModule(globalObject, sourceCode.jsSourceCode(), JSC::JSScriptFetcher::create(vm, { &scriptFetcher }));
334 scope.assertNoExceptionExceptTermination();
335 RETURN_IF_EXCEPTION(scope, false)do { [[clang::suppress]] JSC::VM& vm = (scope).vm(); ((void
)0); if (vm.traps().maybeNeedHandling()) [[unlikely]] { if (vm
.hasExceptionsAfterHandlingTraps()) return false; } } while (
false)
;
336
337 auto& fulfillHandler = *JSNativeStdFunction::create(vm, &globalObject, 1, String(), [protector](JSGlobalObject* globalObject, CallFrame* callFrame) -> JSC::EncodedJSValue {
338 VM& vm = globalObject->vm();
339 JSLockHolder lock { vm };
340 auto scope = DECLARE_THROW_SCOPE(vm)JSC::ThrowScope((vm));
341 Identifier moduleKey = jsValueToModuleKey(globalObject, callFrame->argument(0));
342 RETURN_IF_EXCEPTION(scope, { })do { [[clang::suppress]] JSC::VM& vm = (scope).vm(); ((void
)0); if (vm.traps().maybeNeedHandling()) [[unlikely]] { if (vm
.hasExceptionsAfterHandlingTraps()) return { }; } } while (false
)
;
343 protector->notifyLoadCompleted(*moduleKey.impl());
344 return JSValue::encode(jsUndefined());
345 });
346
347 auto& rejectHandler = *JSNativeStdFunction::create(vm, &globalObject, 1, String(), [protector](JSGlobalObject* globalObject, CallFrame* callFrame) {
348 VM& vm = globalObject->vm();
349 JSLockHolder lock { vm };
350 JSValue errorValue = callFrame->argument(0);
351 auto scope = DECLARE_TOP_EXCEPTION_SCOPE(vm)JSC::TopExceptionScope((vm));
352 if (errorValue.isObject()) {
353 auto* object = JSC::asObject(errorValue);
354 if (JSValue failureKindValue = object->getDirect(vm, vm.propertyNames->builtinNames().moduleFetchFailureKindPrivateName())) {
355 // This is host propagated error in the module loader pipeline.
356 switch (static_cast<ModuleFetchFailureKind>(failureKindValue.asInt32())) {
357 case ModuleFetchFailureKind::WasPropagatedError:
358 protector->notifyLoadFailed(LoadableScript::Error {
359 LoadableScript::ErrorType::Fetch,
360 { },
361 { }
362 });
363 break;
364 // For a fetch error that was not propagated from further in the
365 // pipeline, we include the console error message but do not
366 // include an error value as it should not be reported.
367 case ModuleFetchFailureKind::WasFetchError:
368 protector->notifyLoadFailed(LoadableScript::Error {
369 LoadableScript::ErrorType::Fetch,
370 LoadableScript::ConsoleMessage {
371 MessageSource::JS,
372 MessageLevel::Error,
373 retrieveErrorMessage(*globalObject, vm, errorValue, scope),
374 },
375 { }
376 });
377 break;
378 case ModuleFetchFailureKind::WasResolveError:
379 protector->notifyLoadFailed(LoadableScript::Error {
380 LoadableScript::ErrorType::Resolve,
381 LoadableScript::ConsoleMessage {
382 MessageSource::JS,
383 MessageLevel::Error,
384 retrieveErrorMessage(*globalObject, vm, errorValue, scope),
385 },
386 // The error value may need to be propagated here as it is in
387 // ScriptController in the future.
388 { }
389 });
390 break;
391 case ModuleFetchFailureKind::WasCanceled:
392 protector->notifyLoadWasCanceled();
393 break;
394 }
395 return JSValue::encode(jsUndefined());
396 }
397 }
398
399 protector->notifyLoadFailed(LoadableScript::Error {
400 LoadableScript::ErrorType::Script,
401 LoadableScript::ConsoleMessage {
402 MessageSource::JS,
403 MessageLevel::Error,
404 retrieveErrorMessage(*globalObject, vm, errorValue, scope),
405 },
406 // The error value may need to be propagated here as it is in
407 // ScriptController in the future.
408 { }
409 });
410 return JSValue::encode(jsUndefined());
411 });
412
413 promise->then(&globalObject, &fulfillHandler, &rejectHandler);
414 }
415
416 RefPtr globalScope = m_globalScope.get();
417 globalScope->eventLoop().performMicrotaskCheckpoint(*m_vm);
418
419 // Drive RunLoop until we get either of "Worker is terminated", "Loading is done", or "Loading is failed".
420 RefPtr workerOrWorkletThread = globalScope->workerOrWorkletThread();
421 auto& runLoop = workerOrWorkletThread->runLoop();
422
423 // We do not want to receive messages that are not related to asynchronous resource loading.
424 // Otherwise, a worker discards some messages from the main thread here in a racy way.
425 // For example, the main thread can postMessage just after creating a Worker. In that case, postMessage's
426 // task is queued in WorkerRunLoop before start running module scripts. This task should not be discarded
427 // in the following driving of the RunLoop which mainly attempt to collect initial load of module scripts.
428 String taskMode = WorkerModuleScriptLoader::taskMode();
429
430 // Allow tasks scheduled from the WorkerEventLoop.
431 constexpr bool allowEventLoopTasks = true;
432
433 bool success = true;
434 while ((!protector->isLoaded() && !protector->wasCanceled()) && success) {
435 success = runLoop.runInMode(globalScope.get(), taskMode, allowEventLoopTasks);
436 if (success)
437 globalScope->eventLoop().performMicrotaskCheckpoint(*m_vm);
438 }
439
440 return success;
441}
442
443void WorkerOrWorkletScriptController::linkAndEvaluateModule(WorkerScriptFetcher& scriptFetcher, const ScriptSourceCode& sourceCode, String* returnedExceptionMessage)
444{
445 if (isExecutionForbidden())
446 return;
447
448 initScriptIfNeeded();
449
450 auto& globalObject = *m_globalScopeWrapper.get();
451 VM& vm = globalObject.vm();
452 JSLockHolder lock { vm };
453
454 NakedPtr<JSC::Exception> returnedException;
455 JSExecState::linkAndEvaluateModule(globalObject, Identifier::fromUid(vm, protect(scriptFetcher.moduleKey()).get()), jsUndefined(), returnedException);
456 if ((returnedException && vm.isTerminationException(returnedException)) || isTerminatingExecution()) {
457 forbidExecution();
458 return;
459 }
460
461 if (returnedException) {
462 if (protect(globalScope())->canIncludeErrorDetails(sourceCode.cachedScript(), sourceCode.url().string())) {
Call argument is uncounted and unsafe
463 // FIXME: It's not great that this can run arbitrary code to string-ify the value of the exception.
464 // Do we need to do anything to handle that properly, if it, say, raises another exception?
465 if (returnedExceptionMessage)
466 *returnedExceptionMessage = returnedException->value().toWTFString(&globalObject);
467 } else {
468 String genericErrorMessage { "Script error."_s };
469 if (returnedExceptionMessage)
470 *returnedExceptionMessage = genericErrorMessage;
471 }
472
473 JSLockHolder lock(vm);
474 reportException(m_globalScopeWrapper.get(), returnedException);
475 }
476}
477
478void WorkerOrWorkletScriptController::loadAndEvaluateModule(const URL& moduleURL, FetchOptions::Credentials credentials, CompletionHandler<void(std::optional<Exception>&&)>&& completionHandler)
479{
480 if (isExecutionForbidden()) {
481 completionHandler(Exception { ExceptionCode::NotAllowedError });
482 return;
483 }
484
485 initScriptIfNeeded();
486
487 auto& globalObject = *m_globalScopeWrapper.get();
488 VM& vm = globalObject.vm();
489 JSLockHolder lock { vm };
490
491 auto parameters = ModuleFetchParameters::create(JSC::ScriptFetchParameters::Type::JavaScript, emptyString(), /* isTopLevelModule */ true);
492 RefPtr globalScope = m_globalScope.get();
493 auto scriptFetcher = WorkerScriptFetcher::create(WTF::move(parameters), credentials, globalScope->destination(), globalScope->referrerPolicy());
494
495 auto* promise = JSExecState::loadModule(globalObject, moduleURL, JSC::JSScriptFetchParameters::create(vm, scriptFetcher->parameters()), JSC::JSScriptFetcher::create(vm, { scriptFetcher.ptr() }));
496 if (promise) [[likely]] {
497 auto task = createSharedTask<void(std::optional<Exception>&&)>([completionHandler = WTF::move(completionHandler)](std::optional<Exception>&& exception) mutable {
498 completionHandler(WTF::move(exception));
499 });
500
501 auto& fulfillHandler = *JSNativeStdFunction::create(vm, &globalObject, 1, String(), [task, scriptFetcher](JSGlobalObject* globalObject, CallFrame* callFrame) -> JSC::EncodedJSValue {
502 // task->run(std::nullopt);
503 VM& vm = globalObject->vm();
504 JSLockHolder lock { vm };
505 auto scope = DECLARE_THROW_SCOPE(vm)JSC::ThrowScope((vm));
506
507 Identifier moduleKey = jsValueToModuleKey(globalObject, callFrame->argument(0));
508 RETURN_IF_EXCEPTION(scope, { })do { [[clang::suppress]] JSC::VM& vm = (scope).vm(); ((void
)0); if (vm.traps().maybeNeedHandling()) [[unlikely]] { if (vm
.hasExceptionsAfterHandlingTraps()) return { }; } } while (false
)
;
509 scriptFetcher->notifyLoadCompleted(*moduleKey.impl());
510
511 RefPtr context = downcast<WorkerOrWorkletGlobalScope>(jsCast<JSDOMGlobalObject*>(globalObject)->scriptExecutionContext());
512 if (!context || !context->script()) {
513 task->run(std::nullopt);
514 return JSValue::encode(jsUndefined());
515 }
516
517 NakedPtr<JSC::Exception> returnedException;
518 JSExecState::linkAndEvaluateModule(*globalObject, moduleKey, jsUndefined(), returnedException);
519 if ((returnedException && vm.isTerminationException(returnedException)) || context->script()->isTerminatingExecution()) {
520 if (context->script())
521 context->script()->forbidExecution();
522 task->run(std::nullopt);
523 return JSValue::encode(jsUndefined());
524 }
525
526 if (returnedException) {
527 String message;
528 if (context->canIncludeErrorDetails(nullptr, moduleKey.string())) {
529 // FIXME: It's not great that this can run arbitrary code to string-ify the value of the exception.
530 // Do we need to do anything to handle that properly, if it, say, raises another exception?
531 message = returnedException->value().toWTFString(globalObject);
532 } else
533 message = "Script error."_s;
534 context->reportException(message, { }, { }, { }, { }, { });
535 }
536
537 task->run(std::nullopt);
538 return JSValue::encode(jsUndefined());
539 });
540
541 auto& rejectHandler = *JSNativeStdFunction::create(vm, &globalObject, 1, String(), [task](JSGlobalObject* globalObject, CallFrame* callFrame) {
542 VM& vm = globalObject->vm();
543 JSLockHolder lock { vm };
544 JSValue errorValue = callFrame->argument(0);
545 if (errorValue.isObject()) {
546 auto* object = JSC::asObject(errorValue);
547 if (JSValue failureKindValue = object->getDirect(vm, vm.propertyNames->builtinNames().moduleFetchFailureKindPrivateName())) {
548 auto catchScope = DECLARE_TOP_EXCEPTION_SCOPE(vm)JSC::TopExceptionScope((vm));
549 String message = retrieveErrorMessageWithoutName(*globalObject, vm, object, catchScope);
550 switch (static_cast<ModuleFetchFailureKind>(failureKindValue.asInt32())) {
551 case ModuleFetchFailureKind::WasFetchError:
552 case ModuleFetchFailureKind::WasResolveError:
553 task->run(Exception { ExceptionCode::TypeError, message });
554 break;
555 case ModuleFetchFailureKind::WasPropagatedError:
556 case ModuleFetchFailureKind::WasCanceled:
557 task->run(Exception { ExceptionCode::AbortError, message });
558 break;
559 }
560 return JSValue::encode(jsUndefined());
561 }
562 if (object->inherits<ErrorInstance>()) {
563 auto* error = jsCast<ErrorInstance*>(object);
564 switch (error->errorType()) {
565 case ErrorType::TypeError: {
566 auto catchScope = DECLARE_TOP_EXCEPTION_SCOPE(vm)JSC::TopExceptionScope((vm));
567 String message = retrieveErrorMessageWithoutName(*globalObject, vm, error, catchScope);
568 task->run(Exception { ExceptionCode::TypeError, message });
569 return JSValue::encode(jsUndefined());
570 }
571 case ErrorType::SyntaxError: {
572 auto catchScope = DECLARE_TOP_EXCEPTION_SCOPE(vm)JSC::TopExceptionScope((vm));
573 String message = retrieveErrorMessageWithoutName(*globalObject, vm, error, catchScope);
574 task->run(Exception { ExceptionCode::JSSyntaxError, message });
575 return JSValue::encode(jsUndefined());
576 }
577 default:
578 break;
579 }
580 }
581 }
582
583 auto catchScope = DECLARE_TOP_EXCEPTION_SCOPE(vm)JSC::TopExceptionScope((vm));
584 String message = retrieveErrorMessageWithoutName(*globalObject, vm, errorValue, catchScope);
585 task->run(Exception { ExceptionCode::AbortError, message });
586 return JSValue::encode(jsUndefined());
587 });
588
589 promise->then(&globalObject, &fulfillHandler, &rejectHandler);
590 }
591 globalScope->eventLoop().performMicrotaskCheckpoint(*m_vm);
592}
593
594template<typename JSGlobalScopePrototype, typename JSGlobalScope, typename GlobalScope>
595void WorkerOrWorkletScriptController::initScriptWithSubclass()
596{
597 ASSERT(!m_globalScopeWrapper)((void)0);
598
599 JSLockHolder lock { vm() };
600
601 // Explicitly protect the global object's prototype so it isn't collected
602 // when we allocate the global object. (Once the global object is fully
603 // constructed, it can mark its own prototype.)
604 Structure* contextPrototypeStructure = JSGlobalScopePrototype::createStructure(*m_vm, nullptr, jsNull());
605 auto* contextPrototype = JSGlobalScopePrototype::create(*m_vm, nullptr, contextPrototypeStructure);
606 Structure* structure = JSGlobalScope::createStructure(*m_vm, nullptr, contextPrototype);
607 auto* proxyStructure = JSGlobalProxy::createStructure(*m_vm, nullptr, jsNull());
608 auto* proxy = JSGlobalProxy::create(*m_vm, proxyStructure);
609
610 RefPtr globalScope = m_globalScope.get();
611 SUPPRESS_MEMORY_UNSAFE_CAST[[clang::suppress]] auto& scope = static_cast<GlobalScope&>(*globalScope);
612 m_globalScopeWrapper.set(*m_vm, JSGlobalScope::create(*m_vm, structure, scope, proxy));
613 contextPrototypeStructure->setGlobalObject(*m_vm, m_globalScopeWrapper.get());
614 ASSERT(structure->globalObject() == m_globalScopeWrapper)((void)0);
615 ASSERT(m_globalScopeWrapper->structure()->globalObject() == m_globalScopeWrapper)((void)0);
616 contextPrototype->structure()->setGlobalObject(*m_vm, m_globalScopeWrapper.get());
617 auto* globalScopePrototype = JSGlobalScope::prototype(*m_vm, *m_globalScopeWrapper.get());
618 globalScopePrototype->didBecomePrototype(*m_vm);
619 contextPrototype->structure()->setPrototypeWithoutTransition(*m_vm, globalScopePrototype);
620
621 proxy->setTarget(*m_vm, m_globalScopeWrapper.get());
622
623 ASSERT(m_globalScopeWrapper->globalObject() == m_globalScopeWrapper)((void)0);
624 ASSERT(asObject(m_globalScopeWrapper->getPrototypeDirect())->globalObject() == m_globalScopeWrapper)((void)0);
625
626 m_consoleClient = makeUnique<WorkerConsoleClient>(*globalScope);
627 m_globalScopeWrapper->setConsoleClient(*m_consoleClient);
628 // Worklet global scopes previously routed microtasks to the VM's default queue
629 // We preserve this behavior because AudioWorkletGlobalScope relies on DrainMicrotaskDelayScope to batch
630 // microtask draining between render quanta, which only controls the VM's default
631 // queue, not the event loop's queue.
632 if (!is<WorkletGlobalScope>(m_globalScope))
633 globalScope->addMicrotaskGlobalObject(m_globalScopeWrapper.get());
634}
635
636void WorkerOrWorkletScriptController::initScript()
637{
638 ASSERT(m_vm.get())((void)0);
639 JSC::DeferTermination deferTermination(*m_vm.get());
640
641 if (is<DedicatedWorkerGlobalScope>(m_globalScope)) {
642 initScriptWithSubclass<JSDedicatedWorkerGlobalScopePrototype, JSDedicatedWorkerGlobalScope, DedicatedWorkerGlobalScope>();
643 return;
644 }
645
646 if (is<SharedWorkerGlobalScope>(m_globalScope)) {
647 initScriptWithSubclass<JSSharedWorkerGlobalScopePrototype, JSSharedWorkerGlobalScope, SharedWorkerGlobalScope>();
648 return;
649 }
650
651 if (is<ServiceWorkerGlobalScope>(m_globalScope)) {
652 initScriptWithSubclass<JSServiceWorkerGlobalScopePrototype, JSServiceWorkerGlobalScope, ServiceWorkerGlobalScope>();
653 return;
654 }
655
656 if (is<PaintWorkletGlobalScope>(m_globalScope)) {
657 initScriptWithSubclass<JSPaintWorkletGlobalScopePrototype, JSPaintWorkletGlobalScope, PaintWorkletGlobalScope>();
658 return;
659 }
660
661#if ENABLE(WEB_AUDIO)(defined 1 && 1)
662 if (is<AudioWorkletGlobalScope>(m_globalScope)) {
663 initScriptWithSubclass<JSAudioWorkletGlobalScopePrototype, JSAudioWorkletGlobalScope, AudioWorkletGlobalScope>();
664 return;
665 }
666#endif
667
668 ASSERT_NOT_REACHED()((void)0);
669}
670
671} // namespace WebCore