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 #include "JSMessagePort.h"
28
29 #include "Event.h"
30 #include "ExceptionCode.h"
31 #include "Frame.h"
32 #include "JSDOMGlobalObject.h"
33 #include "JSEvent.h"
34 #include "JSEventListener.h"
35 #include "JSMessagePortCustom.h"
36 #include "MessagePort.h"
37 #include <runtime/Error.h>
38 #include <wtf/text/AtomicString.h>
39
40 using namespace JSC;
41
42 namespace WebCore {
43
markChildren(MarkStack & markStack)44 void JSMessagePort::markChildren(MarkStack& markStack)
45 {
46 Base::markChildren(markStack);
47
48 // If we have a locally entangled port, we can directly mark it as reachable. Ports that are remotely entangled are marked in-use by markActiveObjectsForContext().
49 if (MessagePort* entangledPort = m_impl->locallyEntangledPort())
50 markDOMObjectWrapper(markStack, *Heap::heap(this)->globalData(), entangledPort);
51
52 m_impl->markJSEventListeners(markStack);
53 }
54
postMessage(JSC::ExecState * exec)55 JSC::JSValue JSMessagePort::postMessage(JSC::ExecState* exec)
56 {
57 return handlePostMessage(exec, impl());
58 }
59
fillMessagePortArray(JSC::ExecState * exec,JSC::JSValue value,MessagePortArray & portArray)60 void fillMessagePortArray(JSC::ExecState* exec, JSC::JSValue value, MessagePortArray& portArray)
61 {
62 // Convert from the passed-in JS array-like object to a MessagePortArray.
63 // Also validates the elements per sections 4.1.13 and 4.1.15 of the WebIDL spec and section 8.3.3 of the HTML5 spec.
64 if (value.isUndefinedOrNull()) {
65 portArray.resize(0);
66 return;
67 }
68
69 // Validation of sequence types, per WebIDL spec 4.1.13.
70 unsigned length;
71 JSObject* object = toJSSequence(exec, value, length);
72 if (exec->hadException())
73 return;
74
75 portArray.resize(length);
76 for (unsigned i = 0 ; i < length; ++i) {
77 JSValue value = object->get(exec, i);
78 if (exec->hadException())
79 return;
80 // Validation of non-null objects, per HTML5 spec 8.3.3.
81 if (value.isUndefinedOrNull()) {
82 setDOMException(exec, INVALID_STATE_ERR);
83 return;
84 }
85
86 // Validation of Objects implementing an interface, per WebIDL spec 4.1.15.
87 RefPtr<MessagePort> port = toMessagePort(value);
88 if (!port) {
89 throwTypeError(exec);
90 return;
91 }
92 portArray[i] = port.release();
93 }
94 }
95
96 } // namespace WebCore
97