1/*
2 * Copyright (C) 2010 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. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#include "config.h"
27#include "NPRuntimeUtilities.h"
28
29#if ENABLE(NETSCAPE_PLUGIN_API)
30
31#include <string.h>
32#include <wtf/text/CString.h>
33
34namespace WebKit {
35
36void* npnMemAlloc(uint32_t size)
37{
38 // We could use fastMalloc here, but there might be plug-ins that mix NPN_MemAlloc/NPN_MemFree with malloc and free,
39 // so having them be equivalent seems like a good idea.
40 return malloc(size);
41}
42
43void npnMemFree(void* ptr)
44{
45 // We could use fastFree here, but there might be plug-ins that mix NPN_MemAlloc/NPN_MemFree with malloc and free,
46 // so having them be equivalent seems like a good idea.
47 free(ptr);
48}
49
50NPString createNPString(const CString& string)
51{
52 char* utf8Characters = npnMemNewArray<char>(string.length());
53 memcpy(utf8Characters, string.data(), string.length());
54
55 NPString npString;
56 npString.UTF8Characters = utf8Characters;
57 npString.UTF8Length = string.length();
58
59 return npString;
60}
61
62NPObject* createNPObject(NPP npp, NPClass* npClass)
63{
64 ASSERT(npClass);
65
66 NPObject* npObject;
67 if (npClass->allocate)
68 npObject = npClass->allocate(npp, npClass);
69 else
70 npObject = npnMemNew<NPObject>();
71
72 npObject->_class = npClass;
73 npObject->referenceCount = 1;
74
75 return npObject;
76}
77
78void deallocateNPObject(NPObject* npObject)
79{
80 ASSERT(npObject);
81 if (!npObject)
82 return;
83
84 if (npObject->_class->deallocate)
85 npObject->_class->deallocate(npObject);
86 else
87 npnMemFree(npObject);
88}
89
90void retainNPObject(NPObject* npObject)
91{
92 ASSERT(npObject);
93 if (!npObject)
94 return;
95
96 npObject->referenceCount++;
97}
98
99bool trySafeReleaseNPObject(NPObject* npObject)
100{
101 ASSERT(npObject);
102 if (!npObject)
103 return true;
104
105 ASSERT(npObject->referenceCount >= 1);
106
107 npObject->referenceCount--;
108 if (npObject->referenceCount)
109 return true;
110 if (npObject->_class->deallocate)
111 return false;
112 deallocateNPObject(npObject);
113 return true;
114}
115
116void releaseNPObject(NPObject* npObject)
117{
118 ASSERT(npObject);
119 if (!npObject)
120 return;
121
122 ASSERT(npObject->referenceCount >= 1);
123 npObject->referenceCount--;
124 if (!npObject->referenceCount)
125 deallocateNPObject(npObject);
126}
127
128void releaseNPVariantValue(NPVariant* variant)
129{
130 ASSERT(variant);
131
132 switch (variant->type) {
133 case NPVariantType_Void:
134 case NPVariantType_Null:
135 case NPVariantType_Bool:
136 case NPVariantType_Int32:
137 case NPVariantType_Double:
138 // Nothing to do.
139 break;
140
141 case NPVariantType_String:
142 npnMemFree(const_cast<NPUTF8*>(variant->value.stringValue.UTF8Characters));
143 variant->value.stringValue.UTF8Characters = 0;
144 variant->value.stringValue.UTF8Length = 0;
145 break;
146 case NPVariantType_Object:
147 releaseNPObject(variant->value.objectValue);
148 variant->value.objectValue = 0;
149 break;
150 }
151
152 variant->type = NPVariantType_Void;
153}
154
155} // namespace WebKit
156
157#endif // ENABLE(NETSCAPE_PLUGIN_API)
158