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| 1 /* | |
| 2 * Copyright (C) 2008, 2009 Google 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 are | |
| 6 * met: | |
| 7 * | |
| 8 * * Redistributions of source code must retain the above copyright | |
| 9 * notice, this list of conditions and the following disclaimer. | |
| 10 * * Redistributions in binary form must reproduce the above | |
| 11 * copyright notice, this list of conditions and the following disclaimer | |
| 12 * in the documentation and/or other materials provided with the | |
| 13 * distribution. | |
| 14 * * Neither the name of Google Inc. nor the names of its | |
| 15 * contributors may be used to endorse or promote products derived from | |
| 16 * this software without specific prior written permission. | |
| 17 * | |
| 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
| 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
| 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
| 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
| 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
| 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
| 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
| 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
| 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 29 */ | |
| 30 | |
| 31 #include "config.h" | |
| 32 #include "bindings/v8/V8Utilities.h" | |
| 33 | |
| 34 #include "V8MessagePort.h" | |
| 35 #include "bindings/v8/ExceptionMessages.h" | |
| 36 #include "bindings/v8/ScriptState.h" | |
| 37 #include "bindings/v8/V8AbstractEventListener.h" | |
| 38 #include "bindings/v8/V8Binding.h" | |
| 39 #include "bindings/v8/custom/V8ArrayBufferCustom.h" | |
| 40 #include "core/dom/Document.h" | |
| 41 #include "core/dom/ExceptionCode.h" | |
| 42 #include "core/dom/ExecutionContext.h" | |
| 43 #include "core/dom/MessagePort.h" | |
| 44 #include "core/frame/LocalFrame.h" | |
| 45 #include "core/workers/WorkerGlobalScope.h" | |
| 46 #include "wtf/ArrayBuffer.h" | |
| 47 #include "wtf/text/WTFString.h" | |
| 48 #include <v8.h> | |
| 49 | |
| 50 | |
| 51 namespace WebCore { | |
| 52 | |
| 53 bool extractTransferables(v8::Local<v8::Value> value, int argumentIndex, Message
PortArray& ports, ArrayBufferArray& arrayBuffers, ExceptionState& exceptionState
, v8::Isolate* isolate) | |
| 54 { | |
| 55 if (isUndefinedOrNull(value)) { | |
| 56 ports.resize(0); | |
| 57 arrayBuffers.resize(0); | |
| 58 return true; | |
| 59 } | |
| 60 | |
| 61 uint32_t length = 0; | |
| 62 if (value->IsArray()) { | |
| 63 v8::Local<v8::Array> array = v8::Local<v8::Array>::Cast(value); | |
| 64 length = array->Length(); | |
| 65 } else if (toV8Sequence(value, length, isolate).IsEmpty()) { | |
| 66 exceptionState.throwTypeError(ExceptionMessages::notAnArrayTypeArgumentO
rValue(argumentIndex + 1)); | |
| 67 return false; | |
| 68 } | |
| 69 | |
| 70 v8::Local<v8::Object> transferrables = v8::Local<v8::Object>::Cast(value); | |
| 71 | |
| 72 // Validate the passed array of transferrables. | |
| 73 for (unsigned int i = 0; i < length; ++i) { | |
| 74 v8::Local<v8::Value> transferrable = transferrables->Get(i); | |
| 75 // Validation of non-null objects, per HTML5 spec 10.3.3. | |
| 76 if (isUndefinedOrNull(transferrable)) { | |
| 77 exceptionState.throwDOMException(DataCloneError, "Value at index " +
String::number(i) + " is an untransferable " + (transferrable->IsUndefined() ?
"'undefined'" : "'null'") + " value."); | |
| 78 return false; | |
| 79 } | |
| 80 // Validation of Objects implementing an interface, per WebIDL spec 4.1.
15. | |
| 81 if (V8MessagePort::hasInstance(transferrable, isolate)) { | |
| 82 RefPtr<MessagePort> port = V8MessagePort::toNative(v8::Handle<v8::Ob
ject>::Cast(transferrable)); | |
| 83 // Check for duplicate MessagePorts. | |
| 84 if (ports.contains(port)) { | |
| 85 exceptionState.throwDOMException(DataCloneError, "Message port a
t index " + String::number(i) + " is a duplicate of an earlier port."); | |
| 86 return false; | |
| 87 } | |
| 88 ports.append(port.release()); | |
| 89 } else if (V8ArrayBuffer::hasInstance(transferrable, isolate)) { | |
| 90 RefPtr<ArrayBuffer> arrayBuffer = V8ArrayBuffer::toNative(v8::Handle
<v8::Object>::Cast(transferrable)); | |
| 91 if (arrayBuffers.contains(arrayBuffer)) { | |
| 92 exceptionState.throwDOMException(DataCloneError, "ArrayBuffer at
index " + String::number(i) + " is a duplicate of an earlier ArrayBuffer."); | |
| 93 return false; | |
| 94 } | |
| 95 arrayBuffers.append(arrayBuffer.release()); | |
| 96 } else { | |
| 97 exceptionState.throwDOMException(DataCloneError, "Value at index " +
String::number(i) + " does not have a transferable type."); | |
| 98 return false; | |
| 99 } | |
| 100 } | |
| 101 return true; | |
| 102 } | |
| 103 | |
| 104 } // namespace WebCore | |
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