1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
|
// Copyright (c) 2009 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#include "ipc/ipc_message_utils.h"
#include "base/json/json_writer.h"
#include "base/scoped_ptr.h"
#include "base/time.h"
#include "base/values.h"
namespace IPC {
const int kMaxRecursionDepth = 100;
// Value serialization
static bool ReadValue(const Message* m, void** iter, Value** value,
int recursion);
static void WriteValue(Message* m, const Value* value, int recursion) {
if (recursion > kMaxRecursionDepth) {
LOG(WARNING) << "Max recursion depth hit in WriteValue.";
return;
}
m->WriteInt(value->GetType());
switch (value->GetType()) {
case Value::TYPE_NULL:
break;
case Value::TYPE_BOOLEAN: {
bool val;
value->GetAsBoolean(&val);
WriteParam(m, val);
break;
}
case Value::TYPE_INTEGER: {
int val;
value->GetAsInteger(&val);
WriteParam(m, val);
break;
}
case Value::TYPE_REAL: {
double val;
value->GetAsReal(&val);
WriteParam(m, val);
break;
}
case Value::TYPE_STRING: {
std::string val;
value->GetAsString(&val);
WriteParam(m, val);
break;
}
case Value::TYPE_BINARY: {
const BinaryValue* binary = static_cast<const BinaryValue*>(value);
m->WriteData(binary->GetBuffer(), binary->GetSize());
break;
}
case Value::TYPE_DICTIONARY: {
const DictionaryValue* dict = static_cast<const DictionaryValue*>(value);
WriteParam(m, static_cast<int>(dict->size()));
for (DictionaryValue::key_iterator it = dict->begin_keys();
it != dict->end_keys(); ++it) {
Value* subval;
if (dict->GetWithoutPathExpansion(*it, &subval)) {
WriteParam(m, *it);
WriteValue(m, subval, recursion + 1);
} else {
NOTREACHED() << "DictionaryValue iterators are filthy liars.";
}
}
break;
}
case Value::TYPE_LIST: {
const ListValue* list = static_cast<const ListValue*>(value);
WriteParam(m, static_cast<int>(list->GetSize()));
for (size_t i = 0; i < list->GetSize(); ++i) {
Value* subval;
if (list->Get(i, &subval)) {
WriteValue(m, subval, recursion + 1);
} else {
NOTREACHED() << "ListValue::GetSize is a filthy liar.";
}
}
break;
}
}
}
// Helper for ReadValue that reads a DictionaryValue into a pre-allocated
// object.
static bool ReadDictionaryValue(const Message* m, void** iter,
DictionaryValue* value, int recursion) {
int size;
if (!ReadParam(m, iter, &size))
return false;
for (int i = 0; i < size; ++i) {
std::wstring key;
Value* subval;
if (!ReadParam(m, iter, &key) ||
!ReadValue(m, iter, &subval, recursion + 1))
return false;
value->Set(key, subval);
}
return true;
}
// Helper for ReadValue that reads a ReadListValue into a pre-allocated
// object.
static bool ReadListValue(const Message* m, void** iter,
ListValue* value, int recursion) {
int size;
if (!ReadParam(m, iter, &size))
return false;
for (int i = 0; i < size; ++i) {
Value* subval;
if (!ReadValue(m, iter, &subval, recursion + 1))
return false;
value->Set(i, subval);
}
return true;
}
static bool ReadValue(const Message* m, void** iter, Value** value,
int recursion) {
if (recursion > kMaxRecursionDepth) {
LOG(WARNING) << "Max recursion depth hit in ReadValue.";
return false;
}
int type;
if (!ReadParam(m, iter, &type))
return false;
switch (type) {
case Value::TYPE_NULL:
*value = Value::CreateNullValue();
break;
case Value::TYPE_BOOLEAN: {
bool val;
if (!ReadParam(m, iter, &val))
return false;
*value = Value::CreateBooleanValue(val);
break;
}
case Value::TYPE_INTEGER: {
int val;
if (!ReadParam(m, iter, &val))
return false;
*value = Value::CreateIntegerValue(val);
break;
}
case Value::TYPE_REAL: {
double val;
if (!ReadParam(m, iter, &val))
return false;
*value = Value::CreateRealValue(val);
break;
}
case Value::TYPE_STRING: {
std::string val;
if (!ReadParam(m, iter, &val))
return false;
*value = Value::CreateStringValue(val);
break;
}
case Value::TYPE_BINARY: {
const char* data;
int length;
if (!m->ReadData(iter, &data, &length))
return false;
*value = BinaryValue::CreateWithCopiedBuffer(data, length);
break;
}
case Value::TYPE_DICTIONARY: {
scoped_ptr<DictionaryValue> val(new DictionaryValue());
if (!ReadDictionaryValue(m, iter, val.get(), recursion))
return false;
*value = val.release();
break;
}
case Value::TYPE_LIST: {
scoped_ptr<ListValue> val(new ListValue());
if (!ReadListValue(m, iter, val.get(), recursion))
return false;
*value = val.release();
break;
}
default:
return false;
}
return true;
}
void ParamTraits<DictionaryValue>::Write(Message* m, const param_type& p) {
WriteValue(m, &p, 0);
}
bool ParamTraits<DictionaryValue>::Read(
const Message* m, void** iter, param_type* r) {
int type;
if (!ReadParam(m, iter, &type) || type != Value::TYPE_DICTIONARY)
return false;
return ReadDictionaryValue(m, iter, r, 0);
}
void ParamTraits<DictionaryValue>::Log(const param_type& p, std::wstring* l) {
std::string json;
base::JSONWriter::Write(&p, false, &json);
l->append(UTF8ToWide(json));
}
void ParamTraits<ListValue>::Write(Message* m, const param_type& p) {
WriteValue(m, &p, 0);
}
bool ParamTraits<ListValue>::Read(
const Message* m, void** iter, param_type* r) {
int type;
if (!ReadParam(m, iter, &type) || type != Value::TYPE_LIST)
return false;
return ReadListValue(m, iter, r, 0);
}
void ParamTraits<ListValue>::Log(const param_type& p, std::wstring* l) {
std::string json;
base::JSONWriter::Write(&p, false, &json);
l->append(UTF8ToWide(json));
}
} // namespace IPC
|
