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 "NPVariantData.h"
28
29#if ENABLE(PLUGIN_PROCESS)
30
31#include "ArgumentDecoder.h"
32#include "ArgumentEncoder.h"
33#include "WebCoreArgumentCoders.h"
34
35namespace WebKit {
36
37NPVariantData::NPVariantData()
38    : m_type(NPVariantData::Void)
39    , m_boolValue(false)
40    , m_int32Value(0)
41    , m_doubleValue(0)
42    , m_localNPObjectIDValue(0)
43    , m_remoteNPObjectIDValue(0)
44{
45}
46
47NPVariantData NPVariantData::makeVoid()
48{
49    return NPVariantData();
50}
51
52NPVariantData NPVariantData::makeNull()
53{
54    NPVariantData npVariantData;
55
56    npVariantData.m_type = NPVariantData::Null;
57
58    return npVariantData;
59}
60
61NPVariantData NPVariantData::makeBool(bool value)
62{
63    NPVariantData npVariantData;
64
65    npVariantData.m_type = NPVariantData::Bool;
66    npVariantData.m_boolValue = value;
67
68    return npVariantData;
69}
70
71NPVariantData NPVariantData::makeInt32(int32_t value)
72{
73    NPVariantData npVariantData;
74
75    npVariantData.m_type = NPVariantData::Int32;
76    npVariantData.m_int32Value = value;
77
78    return npVariantData;
79}
80
81NPVariantData NPVariantData::makeDouble(double value)
82{
83    NPVariantData npVariantData;
84
85    npVariantData.m_type = NPVariantData::Double;
86    npVariantData.m_doubleValue = value;
87
88    return npVariantData;
89}
90
91NPVariantData NPVariantData::makeString(const char* string, unsigned length)
92{
93    NPVariantData npVariantData;
94
95    npVariantData.m_type = NPVariantData::String;
96    npVariantData.m_stringValue = CString(string, length);
97
98    return npVariantData;
99}
100
101NPVariantData NPVariantData::makeLocalNPObjectID(uint64_t value)
102{
103    NPVariantData npVariantData;
104
105    npVariantData.m_type = NPVariantData::LocalNPObjectID;
106    npVariantData.m_localNPObjectIDValue = value;
107
108    return npVariantData;
109}
110
111NPVariantData NPVariantData::makeRemoteNPObjectID(uint64_t value)
112{
113    NPVariantData npVariantData;
114
115    npVariantData.m_type = NPVariantData::RemoteNPObjectID;
116    npVariantData.m_remoteNPObjectIDValue = value;
117
118    return npVariantData;
119}
120
121void NPVariantData::encode(CoreIPC::ArgumentEncoder& encoder) const
122{
123    encoder << m_type;
124
125    switch (type()) {
126    case NPVariantData::Void:
127    case NPVariantData::Null:
128        break;
129    case NPVariantData::Bool:
130        encoder << boolValue();
131        break;
132    case NPVariantData::Int32:
133        encoder << int32Value();
134        break;
135    case NPVariantData::Double:
136        encoder << doubleValue();
137        break;
138    case NPVariantData::String:
139        encoder << stringValue();
140        break;
141    case NPVariantData::LocalNPObjectID:
142        encoder << localNPObjectIDValue();
143        break;
144    case NPVariantData::RemoteNPObjectID:
145        encoder << remoteNPObjectIDValue();
146        break;
147    }
148}
149
150bool NPVariantData::decode(CoreIPC::ArgumentDecoder& decoder, NPVariantData& result)
151{
152    uint32_t type;
153    if (!decoder.decode(type))
154        return false;
155
156    // We special-case LocalNPObjectID and RemoteNPObjectID here so a LocalNPObjectID is
157    // decoded as a RemoteNPObjectID and vice versa.
158    // This is done because the type is from the perspective of the other connection, and
159    // thus we have to adjust it to match our own perspective.
160    if (type == NPVariantData::LocalNPObjectID)
161        type = NPVariantData::RemoteNPObjectID;
162    else if (type == NPVariantData::RemoteNPObjectID)
163        type = NPVariantData::LocalNPObjectID;
164
165    result.m_type = type;
166
167    switch (result.m_type) {
168    case NPVariantData::Void:
169    case NPVariantData::Null:
170        return true;
171    case NPVariantData::Bool:
172        return decoder.decode(result.m_boolValue);
173    case NPVariantData::Int32:
174        return decoder.decode(result.m_int32Value);
175    case NPVariantData::Double:
176        return decoder.decode(result.m_doubleValue);
177    case NPVariantData::String:
178        return decoder.decode(result.m_stringValue);
179    case NPVariantData::LocalNPObjectID:
180        return decoder.decode(result.m_localNPObjectIDValue);
181    case NPVariantData::RemoteNPObjectID:
182        return decoder.decode(result.m_remoteNPObjectIDValue);
183    }
184
185    return false;
186}
187
188} // namespace WebKit
189
190#endif // ENABLE(PLUGIN_PROCESS)
191