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
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
|
// Copyright (c) 2011 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 "ppapi/shared_impl/private/tcp_socket_private_impl.h"
#include <string.h>
#include <algorithm>
#include "base/basictypes.h"
#include "base/bind.h"
#include "base/logging.h"
#include "base/message_loop.h"
#include "ppapi/c/pp_completion_callback.h"
#include "ppapi/c/pp_errors.h"
namespace ppapi {
const int32_t TCPSocketPrivateImpl::kMaxReadSize = 1024 * 1024;
const int32_t TCPSocketPrivateImpl::kMaxWriteSize = 1024 * 1024;
TCPSocketPrivateImpl::TCPSocketPrivateImpl(PP_Instance instance,
uint32 socket_id)
: Resource(instance) {
Init(socket_id);
}
TCPSocketPrivateImpl::TCPSocketPrivateImpl(const HostResource& resource,
uint32 socket_id)
: Resource(resource) {
Init(socket_id);
}
TCPSocketPrivateImpl::~TCPSocketPrivateImpl() {
}
thunk::PPB_TCPSocket_Private_API*
TCPSocketPrivateImpl::AsPPB_TCPSocket_Private_API() {
return this;
}
int32_t TCPSocketPrivateImpl::Connect(const char* host,
uint16_t port,
PP_CompletionCallback callback) {
if (!host)
return PP_ERROR_BADARGUMENT;
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (connection_state_ != BEFORE_CONNECT)
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(connect_callback_))
return PP_ERROR_INPROGRESS; // Can only have one pending request.
connect_callback_ = new TrackedCallback(this, callback);
// Send the request, the browser will call us back via ConnectACK.
SendConnect(host, port);
return PP_OK_COMPLETIONPENDING;
}
int32_t TCPSocketPrivateImpl::ConnectWithNetAddress(
const PP_NetAddress_Private* addr,
PP_CompletionCallback callback) {
if (!addr)
return PP_ERROR_BADARGUMENT;
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (connection_state_ != BEFORE_CONNECT)
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(connect_callback_))
return PP_ERROR_INPROGRESS; // Can only have one pending request.
connect_callback_ = new TrackedCallback(this, callback);
// Send the request, the browser will call us back via ConnectACK.
SendConnectWithNetAddress(*addr);
return PP_OK_COMPLETIONPENDING;
}
PP_Bool TCPSocketPrivateImpl::GetLocalAddress(
PP_NetAddress_Private* local_addr) {
if (!IsConnected() || !local_addr)
return PP_FALSE;
*local_addr = local_addr_;
return PP_TRUE;
}
PP_Bool TCPSocketPrivateImpl::GetRemoteAddress(
PP_NetAddress_Private* remote_addr) {
if (!IsConnected() || !remote_addr)
return PP_FALSE;
*remote_addr = remote_addr_;
return PP_TRUE;
}
int32_t TCPSocketPrivateImpl::SSLHandshake(const char* server_name,
uint16_t server_port,
PP_CompletionCallback callback) {
if (!server_name)
return PP_ERROR_BADARGUMENT;
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (connection_state_ != CONNECTED)
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(ssl_handshake_callback_) ||
TrackedCallback::IsPending(read_callback_) ||
TrackedCallback::IsPending(write_callback_))
return PP_ERROR_INPROGRESS;
ssl_handshake_callback_ = new TrackedCallback(this, callback);
// Send the request, the browser will call us back via SSLHandshakeACK.
SendSSLHandshake(server_name, server_port);
return PP_OK_COMPLETIONPENDING;
}
int32_t TCPSocketPrivateImpl::Read(char* buffer,
int32_t bytes_to_read,
PP_CompletionCallback callback) {
if (!buffer || bytes_to_read <= 0)
return PP_ERROR_BADARGUMENT;
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (!IsConnected())
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(read_callback_) ||
TrackedCallback::IsPending(ssl_handshake_callback_))
return PP_ERROR_INPROGRESS;
// TODO(dmichael): use some other strategy for determining if an
// operation is in progress
read_buffer_ = buffer;
bytes_to_read_ = std::min(bytes_to_read, kMaxReadSize);
read_callback_ = new TrackedCallback(this, callback);
// Send the request, the browser will call us back via ReadACK.
SendRead(bytes_to_read_);
return PP_OK_COMPLETIONPENDING;
}
int32_t TCPSocketPrivateImpl::Write(const char* buffer,
int32_t bytes_to_write,
PP_CompletionCallback callback) {
if (!buffer || bytes_to_write <= 0)
return PP_ERROR_BADARGUMENT;
if (!callback.func)
return PP_ERROR_BLOCKS_MAIN_THREAD;
if (!IsConnected())
return PP_ERROR_FAILED;
if (TrackedCallback::IsPending(write_callback_) ||
TrackedCallback::IsPending(ssl_handshake_callback_))
return PP_ERROR_INPROGRESS;
if (bytes_to_write > kMaxWriteSize)
bytes_to_write = kMaxWriteSize;
write_callback_ = new TrackedCallback(this, callback);
// Send the request, the browser will call us back via WriteACK.
SendWrite(std::string(buffer, bytes_to_write));
return PP_OK_COMPLETIONPENDING;
}
void TCPSocketPrivateImpl::Disconnect() {
if (connection_state_ == DISCONNECTED)
return;
connection_state_ = DISCONNECTED;
SendDisconnect();
socket_id_ = 0;
PostAbortIfNecessary(&connect_callback_);
PostAbortIfNecessary(&ssl_handshake_callback_);
PostAbortIfNecessary(&read_callback_);
PostAbortIfNecessary(&write_callback_);
read_buffer_ = NULL;
bytes_to_read_ = -1;
}
void TCPSocketPrivateImpl::OnConnectCompleted(
bool succeeded,
const PP_NetAddress_Private& local_addr,
const PP_NetAddress_Private& remote_addr) {
if (connection_state_ != BEFORE_CONNECT ||
!TrackedCallback::IsPending(connect_callback_)) {
NOTREACHED();
return;
}
if (succeeded) {
local_addr_ = local_addr;
remote_addr_ = remote_addr;
connection_state_ = CONNECTED;
}
TrackedCallback::ClearAndRun(&connect_callback_,
succeeded ? PP_OK : PP_ERROR_FAILED);
}
void TCPSocketPrivateImpl::OnSSLHandshakeCompleted(bool succeeded) {
if (connection_state_ != CONNECTED ||
!TrackedCallback::IsPending(ssl_handshake_callback_)) {
NOTREACHED();
return;
}
if (succeeded) {
connection_state_ = SSL_CONNECTED;
TrackedCallback::ClearAndRun(&ssl_handshake_callback_, PP_OK);
} else {
TrackedCallback::ClearAndRun(&ssl_handshake_callback_, PP_ERROR_FAILED);
Disconnect();
}
}
void TCPSocketPrivateImpl::OnReadCompleted(bool succeeded,
const std::string& data) {
if (!TrackedCallback::IsPending(read_callback_) || !read_buffer_) {
NOTREACHED();
return;
}
if (succeeded) {
CHECK_LE(static_cast<int32_t>(data.size()), bytes_to_read_);
if (!data.empty())
memcpy(read_buffer_, data.c_str(), data.size());
}
read_buffer_ = NULL;
bytes_to_read_ = -1;
TrackedCallback::ClearAndRun(
&read_callback_,
succeeded ? static_cast<int32_t>(data.size()) :
static_cast<int32_t>(PP_ERROR_FAILED));
}
void TCPSocketPrivateImpl::OnWriteCompleted(bool succeeded,
int32_t bytes_written) {
if (!TrackedCallback::IsPending(write_callback_) ||
(succeeded && bytes_written < 0)) {
NOTREACHED();
return;
}
TrackedCallback::ClearAndRun(
&write_callback_,
succeeded ? bytes_written : static_cast<int32_t>(PP_ERROR_FAILED));
}
void TCPSocketPrivateImpl::Init(uint32 socket_id) {
DCHECK(socket_id != 0);
socket_id_ = socket_id;
connection_state_ = BEFORE_CONNECT;
read_buffer_ = NULL;
bytes_to_read_ = -1;
local_addr_.size = 0;
memset(local_addr_.data, 0,
arraysize(local_addr_.data) * sizeof(*local_addr_.data));
remote_addr_.size = 0;
memset(remote_addr_.data, 0,
arraysize(remote_addr_.data) * sizeof(*remote_addr_.data));
}
bool TCPSocketPrivateImpl::IsConnected() const {
return connection_state_ == CONNECTED || connection_state_ == SSL_CONNECTED;
}
void TCPSocketPrivateImpl::PostAbortIfNecessary(
scoped_refptr<TrackedCallback>* callback) {
if (callback->get())
(*callback)->PostAbort();
}
} // namespace ppapi
|