1/*
2 * Copyright (C) 2010 Google Inc. All rights reserved.
3 * Copyright (C) 2013-2018 Apple 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 are
7 * met:
8 *
9 * * Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 * * Redistributions in binary form must reproduce the above
12 * copyright notice, this list of conditions and the following disclaimer
13 * in the documentation and/or other materials provided with the
14 * distribution.
15 * * Neither the name of Google Inc. nor the names of its
16 * contributors may be used to endorse or promote products derived from
17 * this software without specific prior written permission.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
21 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
22 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
23 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
24 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
25 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
26 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
27 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
28 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
29 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
30 */
31
32#include "config.h"
33#include "JSErrorHandler.h"
34
35#include "Document.h"
36#include "ErrorEvent.h"
37#include "Event.h"
38#include "JSDOMConvertNumbers.h"
39#include "JSDOMConvertStrings.h"
40#include "JSEvent.h"
41#include "JSExecState.h"
42#include "JSExecStateInstrumentation.h"
43#include <JavaScriptCore/JSLock.h>
44#include <JavaScriptCore/VMEntryScope.h>
45#include <wtf/Ref.h>
46
47namespace WebCore {
48using namespace JSC;
49
50inline JSErrorHandler::JSErrorHandler(JSObject& listener, JSObject& wrapper, bool isAttribute, DOMWrapperWorld& world)
51 : JSEventListener(&listener, &wrapper, isAttribute, world)
52{
53}
54
55Ref<JSErrorHandler> JSErrorHandler::create(JSC::JSObject& listener, JSC::JSObject& wrapper, bool isAttribute, DOMWrapperWorld& world)
56{
57 return adoptRef(*new JSErrorHandler(listener, wrapper, isAttribute, world));
58}
59
60JSErrorHandler::~JSErrorHandler() = default;
61
62void JSErrorHandler::handleEvent(ScriptExecutionContext& scriptExecutionContext, Event& event)
63{
64 if (!is<ErrorEvent>(event))
65 return JSEventListener::handleEvent(scriptExecutionContext, event);
66
67 VM& vm = scriptExecutionContext.vm();
68 JSLockHolder lock(vm);
69
70 JSObject* jsFunction = this->jsFunction(scriptExecutionContext);
71 if (!jsFunction)
72 return;
73
74 auto* globalObject = toJSDOMGlobalObject(scriptExecutionContext, isolatedWorld());
75 if (!globalObject)
76 return;
77
78 ExecState* exec = globalObject->globalExec();
79
80 CallData callData;
81 CallType callType = jsFunction->methodTable(vm)->getCallData(jsFunction, callData);
82
83 if (callType != CallType::None) {
84 Ref<JSErrorHandler> protectedThis(*this);
85
86 Event* savedEvent = globalObject->currentEvent();
87 globalObject->setCurrentEvent(&event);
88
89 auto& errorEvent = downcast<ErrorEvent>(event);
90
91 MarkedArgumentBuffer args;
92 args.append(toJS<IDLDOMString>(*exec, errorEvent.message()));
93 args.append(toJS<IDLUSVString>(*exec, errorEvent.filename()));
94 args.append(toJS<IDLUnsignedLong>(errorEvent.lineno()));
95 args.append(toJS<IDLUnsignedLong>(errorEvent.colno()));
96 args.append(errorEvent.error(*exec, *globalObject));
97 ASSERT(!args.hasOverflowed());
98
99 VM& vm = globalObject->vm();
100 VMEntryScope entryScope(vm, vm.entryScope ? vm.entryScope->globalObject() : globalObject);
101
102 InspectorInstrumentationCookie cookie = JSExecState::instrumentFunctionCall(&scriptExecutionContext, callType, callData);
103
104 NakedPtr<JSC::Exception> exception;
105 JSValue returnValue = JSExecState::profiledCall(exec, JSC::ProfilingReason::Other, jsFunction, callType, callData, globalObject, args, exception);
106
107 InspectorInstrumentation::didCallFunction(cookie, &scriptExecutionContext);
108
109 globalObject->setCurrentEvent(savedEvent);
110
111 if (exception)
112 reportException(exec, exception);
113 else {
114 if (returnValue.isTrue())
115 event.preventDefault();
116 }
117 }
118}
119
120} // namespace WebCore
121