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
33 #include "V8NPUtils.h"
34
35 #include "DOMWindow.h"
36 #include "Frame.h"
37 #include "PlatformString.h"
38 #undef LOG
39
40 #include "NPV8Object.h"
41 #include "V8NPObject.h"
42 #include "V8Proxy.h"
43 #include "npruntime_impl.h"
44 #include "npruntime_priv.h"
45
convertV8ObjectToNPVariant(v8::Local<v8::Value> object,NPObject * owner,NPVariant * result)46 void convertV8ObjectToNPVariant(v8::Local<v8::Value> object, NPObject* owner, NPVariant* result)
47 {
48 VOID_TO_NPVARIANT(*result);
49
50 // It is really the caller's responsibility to deal with the empty handle case because there could be different actions to
51 // take in different contexts.
52 ASSERT(!object.IsEmpty());
53
54 if (object.IsEmpty())
55 return;
56
57 if (object->IsInt32())
58 INT32_TO_NPVARIANT(object->NumberValue(), *result);
59 else if (object->IsNumber())
60 DOUBLE_TO_NPVARIANT(object->NumberValue(), *result);
61 else if (object->IsBoolean())
62 BOOLEAN_TO_NPVARIANT(object->BooleanValue(), *result);
63 else if (object->IsNull())
64 NULL_TO_NPVARIANT(*result);
65 else if (object->IsUndefined())
66 VOID_TO_NPVARIANT(*result);
67 else if (object->IsString()) {
68 v8::String::Utf8Value utf8(object);
69 char* utf8_chars = strdup(*utf8);
70 STRINGN_TO_NPVARIANT(utf8_chars, utf8.length(), *result);
71 } else if (object->IsObject()) {
72 WebCore::DOMWindow* window = WebCore::V8Proxy::retrieveWindow(WebCore::V8Proxy::currentContext());
73 NPObject* npobject = npCreateV8ScriptObject(0, v8::Handle<v8::Object>::Cast(object), window);
74 if (npobject)
75 _NPN_RegisterObject(npobject, owner);
76 OBJECT_TO_NPVARIANT(npobject, *result);
77 }
78 }
79
80
convertNPVariantToV8Object(const NPVariant * variant,NPObject * npobject)81 v8::Handle<v8::Value> convertNPVariantToV8Object(const NPVariant* variant, NPObject* npobject)
82 {
83 NPVariantType type = variant->type;
84
85 switch (type) {
86 case NPVariantType_Int32:
87 return v8::Integer::New(NPVARIANT_TO_INT32(*variant));
88 case NPVariantType_Double:
89 return v8::Number::New(NPVARIANT_TO_DOUBLE(*variant));
90 case NPVariantType_Bool:
91 return NPVARIANT_TO_BOOLEAN(*variant) ? v8::True() : v8::False();
92 case NPVariantType_Null:
93 return v8::Null();
94 case NPVariantType_Void:
95 return v8::Undefined();
96 case NPVariantType_String: {
97 NPString src = NPVARIANT_TO_STRING(*variant);
98 return v8::String::New(src.UTF8Characters, src.UTF8Length);
99 }
100 case NPVariantType_Object: {
101 NPObject* obj = NPVARIANT_TO_OBJECT(*variant);
102 if (obj->_class == npScriptObjectClass)
103 return reinterpret_cast<V8NPObject*>(obj)->v8Object;
104 return createV8ObjectForNPObject(obj, npobject);
105 }
106 default:
107 return v8::Undefined();
108 }
109 }
110
111 // Helper function to create an NPN String Identifier from a v8 string.
getStringIdentifier(v8::Handle<v8::String> str)112 NPIdentifier getStringIdentifier(v8::Handle<v8::String> str)
113 {
114 const int kStackBufferSize = 100;
115
116 int bufferLength = str->Utf8Length() + 1;
117 if (bufferLength <= kStackBufferSize) {
118 // Use local stack buffer to avoid heap allocations for small strings. Here we should only use the stack space for
119 // stackBuffer when it's used, not when we use the heap.
120 //
121 // WriteUtf8 is guaranteed to generate a null-terminated string because bufferLength is constructed to be one greater
122 // than the string length.
123 char stackBuffer[kStackBufferSize];
124 str->WriteUtf8(stackBuffer, bufferLength);
125 return _NPN_GetStringIdentifier(stackBuffer);
126 }
127
128 v8::String::Utf8Value utf8(str);
129 return _NPN_GetStringIdentifier(*utf8);
130 }
131