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1 /*
2  * Copyright (C) 2008, 2009 Apple Inc. All Rights Reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24  */
25 
26 #include "config.h"
27 
28 #if ENABLE(WORKERS)
29 
30 #include "JSWorkerContext.h"
31 
32 #include "ExceptionCode.h"
33 #include "JSDOMBinding.h"
34 #include "JSDOMGlobalObject.h"
35 #include "JSEventListener.h"
36 #include "JSEventSource.h"
37 #include "JSMessageChannel.h"
38 #include "JSMessagePort.h"
39 #include "JSWorkerLocation.h"
40 #include "JSWorkerNavigator.h"
41 #include "JSXMLHttpRequest.h"
42 #include "ScheduledAction.h"
43 #include "WorkerContext.h"
44 #include "WorkerLocation.h"
45 #include "WorkerNavigator.h"
46 #include <interpreter/Interpreter.h>
47 
48 #if ENABLE(WEB_SOCKETS)
49 #include "JSWebSocket.h"
50 #endif
51 
52 using namespace JSC;
53 
54 namespace WebCore {
55 
markChildren(MarkStack & markStack)56 void JSWorkerContext::markChildren(MarkStack& markStack)
57 {
58     Base::markChildren(markStack);
59 
60     JSGlobalData& globalData = this->globalData();
61 
62     markActiveObjectsForContext(markStack, globalData, scriptExecutionContext());
63 
64     markDOMObjectWrapper(markStack, globalData, impl()->optionalLocation());
65     markDOMObjectWrapper(markStack, globalData, impl()->optionalNavigator());
66 
67     impl()->markJSEventListeners(markStack);
68 }
69 
getOwnPropertySlotDelegate(ExecState * exec,const Identifier & propertyName,PropertySlot & slot)70 bool JSWorkerContext::getOwnPropertySlotDelegate(ExecState* exec, const Identifier& propertyName, PropertySlot& slot)
71 {
72     // Look for overrides before looking at any of our own properties.
73     if (JSGlobalObject::getOwnPropertySlot(exec, propertyName, slot))
74         return true;
75     return false;
76 }
77 
getOwnPropertyDescriptorDelegate(ExecState * exec,const Identifier & propertyName,PropertyDescriptor & descriptor)78 bool JSWorkerContext::getOwnPropertyDescriptorDelegate(ExecState* exec, const Identifier& propertyName, PropertyDescriptor& descriptor)
79 {
80     // Look for overrides before looking at any of our own properties.
81     if (JSGlobalObject::getOwnPropertyDescriptor(exec, propertyName, descriptor))
82         return true;
83     return false;
84 }
85 
86 #if ENABLE(EVENTSOURCE)
eventSource(ExecState * exec) const87 JSValue JSWorkerContext::eventSource(ExecState* exec) const
88 {
89     return getDOMConstructor<JSEventSourceConstructor>(exec, this);
90 }
91 #endif
92 
xmlHttpRequest(ExecState * exec) const93 JSValue JSWorkerContext::xmlHttpRequest(ExecState* exec) const
94 {
95     return getDOMConstructor<JSXMLHttpRequestConstructor>(exec, this);
96 }
97 
98 #if ENABLE(WEB_SOCKETS)
webSocket(ExecState * exec) const99 JSValue JSWorkerContext::webSocket(ExecState* exec) const
100 {
101     return getDOMConstructor<JSWebSocketConstructor>(exec, this);
102 }
103 #endif
104 
importScripts(ExecState * exec)105 JSValue JSWorkerContext::importScripts(ExecState* exec)
106 {
107     if (!exec->argumentCount())
108         return jsUndefined();
109 
110     Vector<String> urls;
111     for (unsigned i = 0; i < exec->argumentCount(); i++) {
112         urls.append(ustringToString(exec->argument(i).toString(exec)));
113         if (exec->hadException())
114             return jsUndefined();
115     }
116     ExceptionCode ec = 0;
117 
118     impl()->importScripts(urls, ec);
119     setDOMException(exec, ec);
120     return jsUndefined();
121 }
122 
setTimeout(ExecState * exec)123 JSValue JSWorkerContext::setTimeout(ExecState* exec)
124 {
125     // FIXME: Should we enforce a Content-Security-Policy on workers?
126     OwnPtr<ScheduledAction> action = ScheduledAction::create(exec, currentWorld(exec), 0);
127     if (exec->hadException())
128         return jsUndefined();
129     int delay = exec->argument(1).toInt32(exec);
130     return jsNumber(impl()->setTimeout(action.release(), delay));
131 }
132 
setInterval(ExecState * exec)133 JSValue JSWorkerContext::setInterval(ExecState* exec)
134 {
135     // FIXME: Should we enforce a Content-Security-Policy on workers?
136     OwnPtr<ScheduledAction> action = ScheduledAction::create(exec, currentWorld(exec), 0);
137     if (exec->hadException())
138         return jsUndefined();
139     int delay = exec->argument(1).toInt32(exec);
140     return jsNumber(impl()->setInterval(action.release(), delay));
141 }
142 
143 
144 #if ENABLE(CHANNEL_MESSAGING)
messageChannel(ExecState * exec) const145 JSValue JSWorkerContext::messageChannel(ExecState* exec) const
146 {
147     return getDOMConstructor<JSMessageChannelConstructor>(exec, this);
148 }
149 #endif
150 
151 } // namespace WebCore
152 
153 #endif // ENABLE(WORKERS)
154