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#include <WebCore/NotImplemented.h>
35
36namespace WebKit {
37
38NPVariantData::NPVariantData()
39    : m_type(NPVariantData::Void)
40    , m_boolValue(false)
41    , m_int32Value(0)
42    , m_doubleValue(0)
43    , m_localNPObjectIDValue(0)
44    , m_remoteNPObjectIDValue(0)
45{
46}
47
48NPVariantData NPVariantData::makeVoid()
49{
50    return NPVariantData();
51}
52
53NPVariantData NPVariantData::makeNull()
54{
55    NPVariantData npVariantData;
56
57    npVariantData.m_type = NPVariantData::Null;
58
59    return npVariantData;
60}
61
62NPVariantData NPVariantData::makeBool(bool value)
63{
64    NPVariantData npVariantData;
65
66    npVariantData.m_type = NPVariantData::Bool;
67    npVariantData.m_boolValue = value;
68
69    return npVariantData;
70}
71
72NPVariantData NPVariantData::makeInt32(int32_t value)
73{
74    NPVariantData npVariantData;
75
76    npVariantData.m_type = NPVariantData::Int32;
77    npVariantData.m_int32Value = value;
78
79    return npVariantData;
80}
81
82NPVariantData NPVariantData::makeDouble(double value)
83{
84    NPVariantData npVariantData;
85
86    npVariantData.m_type = NPVariantData::Double;
87    npVariantData.m_doubleValue = value;
88
89    return npVariantData;
90}
91
92NPVariantData NPVariantData::makeString(const char* string, unsigned length)
93{
94    NPVariantData npVariantData;
95
96    npVariantData.m_type = NPVariantData::String;
97    npVariantData.m_stringValue = CString(string, length);
98
99    return npVariantData;
100}
101
102NPVariantData NPVariantData::makeLocalNPObjectID(uint64_t value)
103{
104    NPVariantData npVariantData;
105
106    npVariantData.m_type = NPVariantData::LocalNPObjectID;
107    npVariantData.m_localNPObjectIDValue = value;
108
109    return npVariantData;
110}
111
112NPVariantData NPVariantData::makeRemoteNPObjectID(uint64_t value)
113{
114    NPVariantData npVariantData;
115
116    npVariantData.m_type = NPVariantData::RemoteNPObjectID;
117    npVariantData.m_remoteNPObjectIDValue = value;
118
119    return npVariantData;
120}
121
122void NPVariantData::encode(CoreIPC::ArgumentEncoder* encoder) const
123{
124    encoder->encode(m_type);
125
126    switch (type()) {
127    case NPVariantData::Void:
128    case NPVariantData::Null:
129        break;
130    case NPVariantData::Bool:
131        encoder->encode(boolValue());
132        break;
133    case NPVariantData::Int32:
134        encoder->encode(int32Value());
135        break;
136    case NPVariantData::Double:
137        encoder->encode(doubleValue());
138        break;
139    case NPVariantData::String:
140        encoder->encode(stringValue());
141        break;
142    case NPVariantData::LocalNPObjectID:
143        encoder->encode(localNPObjectIDValue());
144        break;
145    case NPVariantData::RemoteNPObjectID:
146        encoder->encode(remoteNPObjectIDValue());
147        break;
148    }
149}
150
151bool NPVariantData::decode(CoreIPC::ArgumentDecoder* decoder, NPVariantData& result)
152{
153    uint32_t type;
154    if (!decoder->decode(type))
155        return false;
156
157    // We special-case LocalNPObjectID and RemoteNPObjectID here so a LocalNPObjectID is
158    // decoded as a RemoteNPObjectID and vice versa.
159    // This is done because the type is from the perspective of the other connection, and
160    // thus we have to adjust it to match our own perspective.
161    if (type == NPVariantData::LocalNPObjectID)
162        type = NPVariantData::RemoteNPObjectID;
163    else if (type == NPVariantData::RemoteNPObjectID)
164        type = NPVariantData::LocalNPObjectID;
165
166    result.m_type = type;
167
168    switch (result.m_type) {
169    case NPVariantData::Void:
170    case NPVariantData::Null:
171        return true;
172    case NPVariantData::Bool:
173        return decoder->decode(result.m_boolValue);
174    case NPVariantData::Int32:
175        return decoder->decode(result.m_int32Value);
176    case NPVariantData::Double:
177        return decoder->decode(result.m_doubleValue);
178    case NPVariantData::String:
179        return decoder->decode(result.m_stringValue);
180    case NPVariantData::LocalNPObjectID:
181        return decoder->decode(result.m_localNPObjectIDValue);
182    case NPVariantData::RemoteNPObjectID:
183        return decoder->decode(result.m_remoteNPObjectIDValue);
184    }
185
186    return false;
187}
188
189} // namespace WebKit
190
191#endif // ENABLE(PLUGIN_PROCESS)
192