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
|
/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "InputStreamUtils.h"
#include "nsIIPCSerializableInputStream.h"
#include "mozilla/Assertions.h"
#include "mozilla/dom/File.h"
#include "mozilla/dom/quota/DecryptingInputStream_impl.h"
#include "mozilla/dom/quota/IPCStreamCipherStrategy.h"
#include "mozilla/ipc/DataPipe.h"
#include "mozilla/InputStreamLengthHelper.h"
#include "mozilla/RemoteLazyInputStream.h"
#include "mozilla/RemoteLazyInputStreamChild.h"
#include "mozilla/RemoteLazyInputStreamStorage.h"
#include "mozilla/SlicedInputStream.h"
#include "mozilla/InputStreamLengthWrapper.h"
#include "nsBufferedStreams.h"
#include "nsComponentManagerUtils.h"
#include "nsDebug.h"
#include "nsFileStreams.h"
#include "nsIAsyncInputStream.h"
#include "nsIAsyncOutputStream.h"
#include "nsID.h"
#include "nsIMIMEInputStream.h"
#include "nsIMultiplexInputStream.h"
#include "nsIPipe.h"
#include "nsMIMEInputStream.h"
#include "nsMultiplexInputStream.h"
#include "nsNetCID.h"
#include "nsStreamUtils.h"
#include "nsStringStream.h"
#include "nsXULAppAPI.h"
using namespace mozilla;
using namespace mozilla::dom;
namespace mozilla {
namespace ipc {
void InputStreamHelper::SerializedComplexity(nsIInputStream* aInputStream,
uint32_t aMaxSize,
uint32_t* aSizeUsed,
uint32_t* aPipes,
uint32_t* aTransferables) {
MOZ_ASSERT(aInputStream);
nsCOMPtr<nsIIPCSerializableInputStream> serializable =
do_QueryInterface(aInputStream);
if (!serializable) {
MOZ_CRASH("Input stream is not serializable!");
}
serializable->SerializedComplexity(aMaxSize, aSizeUsed, aPipes,
aTransferables);
}
void InputStreamHelper::SerializeInputStream(nsIInputStream* aInputStream,
InputStreamParams& aParams,
uint32_t aMaxSize,
uint32_t* aSizeUsed) {
MOZ_ASSERT(aInputStream);
nsCOMPtr<nsIIPCSerializableInputStream> serializable =
do_QueryInterface(aInputStream);
if (!serializable) {
MOZ_CRASH("Input stream is not serializable!");
}
serializable->Serialize(aParams, aMaxSize, aSizeUsed);
if (aParams.type() == InputStreamParams::T__None) {
MOZ_CRASH("Serialize failed!");
}
}
void InputStreamHelper::SerializeInputStreamAsPipe(nsIInputStream* aInputStream,
InputStreamParams& aParams) {
MOZ_ASSERT(aInputStream);
// Let's try to take the length using InputStreamLengthHelper. If the length
// cannot be taken synchronously, and its length is needed, the stream needs
// to be fully copied in memory on the deserialization side.
int64_t length;
if (!InputStreamLengthHelper::GetSyncLength(aInputStream, &length)) {
length = -1;
}
RefPtr<DataPipeSender> sender;
RefPtr<DataPipeReceiver> receiver;
nsresult rv = NewDataPipe(kDefaultDataPipeCapacity, getter_AddRefs(sender),
getter_AddRefs(receiver));
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
nsCOMPtr<nsIEventTarget> target =
do_GetService(NS_STREAMTRANSPORTSERVICE_CONTRACTID);
rv =
NS_AsyncCopy(aInputStream, sender, target, NS_ASYNCCOPY_VIA_WRITESEGMENTS,
kDefaultDataPipeCapacity, nullptr, nullptr);
if (NS_WARN_IF(NS_FAILED(rv))) {
return;
}
aParams = DataPipeReceiverStreamParams(WrapNotNull(receiver));
if (length != -1) {
aParams = InputStreamLengthWrapperParams(aParams, length, false);
}
}
already_AddRefed<nsIInputStream> InputStreamHelper::DeserializeInputStream(
const InputStreamParams& aParams) {
if (aParams.type() == InputStreamParams::TRemoteLazyInputStreamParams) {
const RemoteLazyInputStreamParams& params =
aParams.get_RemoteLazyInputStreamParams();
// If the RemoteLazyInputStream already has an internal stream, unwrap it.
// This is required as some code unfortunately depends on the precise
// topology of received streams, and cannot handle being passed a
// `RemoteLazyInputStream` in the parent process.
nsCOMPtr<nsIInputStream> innerStream;
if (XRE_IsParentProcess() &&
NS_SUCCEEDED(
params.stream()->TakeInternalStream(getter_AddRefs(innerStream)))) {
return innerStream.forget();
}
return do_AddRef(params.stream().get());
}
if (aParams.type() == InputStreamParams::TDataPipeReceiverStreamParams) {
const DataPipeReceiverStreamParams& pipeParams =
aParams.get_DataPipeReceiverStreamParams();
return do_AddRef(pipeParams.pipe().get());
}
nsCOMPtr<nsIIPCSerializableInputStream> serializable;
switch (aParams.type()) {
case InputStreamParams::TStringInputStreamParams: {
nsCOMPtr<nsIInputStream> stream;
NS_NewCStringInputStream(getter_AddRefs(stream), ""_ns);
serializable = do_QueryInterface(stream);
} break;
case InputStreamParams::TFileInputStreamParams: {
nsCOMPtr<nsIFileInputStream> stream;
nsFileInputStream::Create(NS_GET_IID(nsIFileInputStream),
getter_AddRefs(stream));
serializable = do_QueryInterface(stream);
} break;
case InputStreamParams::TBufferedInputStreamParams: {
nsCOMPtr<nsIBufferedInputStream> stream;
nsBufferedInputStream::Create(NS_GET_IID(nsIBufferedInputStream),
getter_AddRefs(stream));
serializable = do_QueryInterface(stream);
} break;
case InputStreamParams::TMIMEInputStreamParams: {
nsCOMPtr<nsIMIMEInputStream> stream;
nsMIMEInputStreamConstructor(NS_GET_IID(nsIMIMEInputStream),
getter_AddRefs(stream));
serializable = do_QueryInterface(stream);
} break;
case InputStreamParams::TMultiplexInputStreamParams: {
nsCOMPtr<nsIMultiplexInputStream> stream;
nsMultiplexInputStreamConstructor(NS_GET_IID(nsIMultiplexInputStream),
getter_AddRefs(stream));
serializable = do_QueryInterface(stream);
} break;
case InputStreamParams::TSlicedInputStreamParams:
serializable = new SlicedInputStream();
break;
case InputStreamParams::TInputStreamLengthWrapperParams:
serializable = new InputStreamLengthWrapper();
break;
case InputStreamParams::TEncryptedFileInputStreamParams:
serializable = new dom::quota::DecryptingInputStream<
dom::quota::IPCStreamCipherStrategy>();
break;
default:
MOZ_ASSERT(false, "Unknown params!");
return nullptr;
}
MOZ_ASSERT(serializable);
if (!serializable->Deserialize(aParams)) {
MOZ_ASSERT(false, "Deserialize failed!");
return nullptr;
}
nsCOMPtr<nsIInputStream> stream = do_QueryInterface(serializable);
MOZ_ASSERT(stream);
return stream.forget();
}
} // namespace ipc
} // namespace mozilla
|
