pepper_tcp_socket.cc revision 2a99a7e74a7f215066514fe81d2bfa6639d9eddd 
1// Copyright (c) 2012 The Chromium Authors. All rights reserved.
2// Use of this source code is governed by a BSD-style license that can be
3// found in the LICENSE file.
4
5#include "content/browser/renderer_host/pepper/pepper_tcp_socket.h"
6
7#include <string.h>
8
9#include "base/bind.h"
10#include "base/bind_helpers.h"
11#include "base/compiler_specific.h"
12#include "base/logging.h"
13#include "base/string_util.h"
14#include "content/browser/renderer_host/pepper/pepper_message_filter.h"
15#include "content/public/browser/browser_thread.h"
16#include "net/base/cert_verifier.h"
17#include "net/base/host_port_pair.h"
18#include "net/base/io_buffer.h"
19#include "net/base/ip_endpoint.h"
20#include "net/base/net_errors.h"
21#include "net/base/x509_certificate.h"
22#include "net/dns/host_resolver.h"
23#include "net/dns/single_request_host_resolver.h"
24#include "net/socket/client_socket_factory.h"
25#include "net/socket/client_socket_handle.h"
26#include "net/socket/ssl_client_socket.h"
27#include "net/socket/tcp_client_socket.h"
28#include "ppapi/proxy/ppapi_messages.h"
29#include "ppapi/shared_impl/private/net_address_private_impl.h"
30#include "ppapi/shared_impl/private/ppb_x509_certificate_private_shared.h"
31#include "ppapi/shared_impl/private/tcp_socket_private_impl.h"
32
33using ppapi::NetAddressPrivateImpl;
34
35namespace content {
36
37PepperTCPSocket::PepperTCPSocket(
38    PepperMessageFilter* manager,
39    int32 routing_id,
40    uint32 plugin_dispatcher_id,
41    uint32 socket_id)
42    : manager_(manager),
43      routing_id_(routing_id),
44      plugin_dispatcher_id_(plugin_dispatcher_id),
45      socket_id_(socket_id),
46      connection_state_(BEFORE_CONNECT),
47      end_of_file_reached_(false) {
48  DCHECK(manager);
49}
50
51PepperTCPSocket::PepperTCPSocket(
52    PepperMessageFilter* manager,
53    int32 routing_id,
54    uint32 plugin_dispatcher_id,
55    uint32 socket_id,
56    net::StreamSocket* socket)
57    : manager_(manager),
58      routing_id_(routing_id),
59      plugin_dispatcher_id_(plugin_dispatcher_id),
60      socket_id_(socket_id),
61      connection_state_(CONNECTED),
62      end_of_file_reached_(false),
63      socket_(socket) {
64  DCHECK(manager);
65}
66
67PepperTCPSocket::~PepperTCPSocket() {
68  // Make sure no further callbacks from socket_.
69  if (socket_.get())
70    socket_->Disconnect();
71}
72
73void PepperTCPSocket::Connect(const std::string& host, uint16_t port) {
74  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
75
76  if (connection_state_ != BEFORE_CONNECT) {
77    SendConnectACKError();
78    return;
79  }
80
81  connection_state_ = CONNECT_IN_PROGRESS;
82  net::HostResolver::RequestInfo request_info(net::HostPortPair(host, port));
83  resolver_.reset(new net::SingleRequestHostResolver(
84      manager_->GetHostResolver()));
85  int result = resolver_->Resolve(
86      request_info, &address_list_,
87      base::Bind(&PepperTCPSocket::OnResolveCompleted, base::Unretained(this)),
88      net::BoundNetLog());
89  if (result != net::ERR_IO_PENDING)
90    OnResolveCompleted(result);
91}
92
93void PepperTCPSocket::ConnectWithNetAddress(
94    const PP_NetAddress_Private& net_addr) {
95  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
96
97  net::IPAddressNumber address;
98  int port;
99  if (connection_state_ != BEFORE_CONNECT ||
100      !NetAddressPrivateImpl::NetAddressToIPEndPoint(net_addr,
101                                                     &address,
102                                                     &port)) {
103    SendConnectACKError();
104    return;
105  }
106
107  // Copy the single IPEndPoint to address_list_.
108  address_list_.clear();
109  address_list_.push_back(net::IPEndPoint(address, port));
110  connection_state_ = CONNECT_IN_PROGRESS;
111  StartConnect(address_list_);
112}
113
114void PepperTCPSocket::SSLHandshake(
115    const std::string& server_name,
116    uint16_t server_port,
117    const std::vector<std::vector<char> >& trusted_certs,
118    const std::vector<std::vector<char> >& untrusted_certs) {
119  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
120
121  // Allow to do SSL handshake only if currently the socket has been connected
122  // and there isn't pending read or write.
123  // IsConnected() includes the state that SSL handshake has been finished and
124  // therefore isn't suitable here.
125  if (connection_state_ != CONNECTED || read_buffer_.get() ||
126      write_buffer_base_.get() || write_buffer_.get()) {
127    SendSSLHandshakeACK(false);
128    return;
129  }
130
131  connection_state_ = SSL_HANDSHAKE_IN_PROGRESS;
132  // TODO(raymes,rsleevi): Use trusted/untrusted certificates when connecting.
133
134  net::ClientSocketHandle* handle = new net::ClientSocketHandle();
135  handle->set_socket(socket_.release());
136  net::ClientSocketFactory* factory =
137      net::ClientSocketFactory::GetDefaultFactory();
138  net::HostPortPair host_port_pair(server_name, server_port);
139  net::SSLClientSocketContext ssl_context;
140  ssl_context.cert_verifier = manager_->GetCertVerifier();
141  socket_.reset(factory->CreateSSLClientSocket(
142      handle, host_port_pair, manager_->ssl_config(), ssl_context));
143  if (!socket_.get()) {
144    LOG(WARNING) << "Failed to create an SSL client socket.";
145    OnSSLHandshakeCompleted(net::ERR_UNEXPECTED);
146    return;
147  }
148
149  int result = socket_->Connect(
150      base::Bind(&PepperTCPSocket::OnSSLHandshakeCompleted,
151                 base::Unretained(this)));
152  if (result != net::ERR_IO_PENDING)
153    OnSSLHandshakeCompleted(result);
154}
155
156void PepperTCPSocket::Read(int32 bytes_to_read) {
157  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
158
159  if (!IsConnected() || end_of_file_reached_ || read_buffer_.get() ||
160      bytes_to_read <= 0) {
161    SendReadACKError();
162    return;
163  }
164
165  if (bytes_to_read > ppapi::TCPSocketPrivateImpl::kMaxReadSize) {
166    NOTREACHED();
167    bytes_to_read = ppapi::TCPSocketPrivateImpl::kMaxReadSize;
168  }
169
170  read_buffer_ = new net::IOBuffer(bytes_to_read);
171  int result = socket_->Read(read_buffer_, bytes_to_read,
172                             base::Bind(&PepperTCPSocket::OnReadCompleted,
173                                        base::Unretained(this)));
174  if (result != net::ERR_IO_PENDING)
175    OnReadCompleted(result);
176}
177
178void PepperTCPSocket::Write(const std::string& data) {
179  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
180
181  if (!IsConnected() || write_buffer_base_.get() || write_buffer_.get() ||
182      data.empty()) {
183    SendWriteACKError();
184    return;
185  }
186
187  int data_size = data.size();
188  if (data_size > ppapi::TCPSocketPrivateImpl::kMaxWriteSize) {
189    NOTREACHED();
190    data_size = ppapi::TCPSocketPrivateImpl::kMaxWriteSize;
191  }
192
193  write_buffer_base_ = new net::IOBuffer(data_size);
194  memcpy(write_buffer_base_->data(), data.data(), data_size);
195  write_buffer_ = new net::DrainableIOBuffer(write_buffer_base_, data_size);
196  DoWrite();
197}
198
199void PepperTCPSocket::SetBoolOption(uint32_t name, bool value) {
200  DCHECK(BrowserThread::CurrentlyOn(BrowserThread::IO));
201  DCHECK(socket_.get());
202
203  switch (name) {
204    case PP_TCPSOCKETOPTION_NO_DELAY:
205      if (!IsSsl()) {
206        net::TCPClientSocket* tcp_socket =
207            static_cast<net::TCPClientSocket*>(socket_.get());
208        SendSetBoolOptionACK(tcp_socket->SetNoDelay(value));
209      } else {
210        SendSetBoolOptionACK(false);
211      }
212      return;
213    default:
214      break;
215  }
216
217  NOTREACHED();
218  SendSetBoolOptionACK(false);
219}
220
221void PepperTCPSocket::StartConnect(const net::AddressList& addresses) {
222  DCHECK(connection_state_ == CONNECT_IN_PROGRESS);
223
224  socket_.reset(new net::TCPClientSocket(addresses, NULL,
225                                         net::NetLog::Source()));
226  int result = socket_->Connect(
227      base::Bind(&PepperTCPSocket::OnConnectCompleted,
228                 base::Unretained(this)));
229  if (result != net::ERR_IO_PENDING)
230    OnConnectCompleted(result);
231}
232
233void PepperTCPSocket::SendConnectACKError() {
234  manager_->Send(new PpapiMsg_PPBTCPSocket_ConnectACK(
235      routing_id_, plugin_dispatcher_id_, socket_id_, false,
236      NetAddressPrivateImpl::kInvalidNetAddress,
237      NetAddressPrivateImpl::kInvalidNetAddress));
238}
239
240// static
241bool PepperTCPSocket::GetCertificateFields(
242    const net::X509Certificate& cert,
243    ppapi::PPB_X509Certificate_Fields* fields) {
244  const net::CertPrincipal& issuer = cert.issuer();
245  fields->SetField(PP_X509CERTIFICATE_PRIVATE_ISSUER_COMMON_NAME,
246      new base::StringValue(issuer.common_name));
247  fields->SetField(PP_X509CERTIFICATE_PRIVATE_ISSUER_LOCALITY_NAME,
248      new base::StringValue(issuer.locality_name));
249  fields->SetField(PP_X509CERTIFICATE_PRIVATE_ISSUER_STATE_OR_PROVINCE_NAME,
250      new base::StringValue(issuer.state_or_province_name));
251  fields->SetField(PP_X509CERTIFICATE_PRIVATE_ISSUER_COUNTRY_NAME,
252      new base::StringValue(issuer.country_name));
253  fields->SetField(PP_X509CERTIFICATE_PRIVATE_ISSUER_ORGANIZATION_NAME,
254      new base::StringValue(JoinString(issuer.organization_names, '\n')));
255  fields->SetField(PP_X509CERTIFICATE_PRIVATE_ISSUER_ORGANIZATION_UNIT_NAME,
256      new base::StringValue(JoinString(issuer.organization_unit_names, '\n')));
257
258  const net::CertPrincipal& subject = cert.subject();
259  fields->SetField(PP_X509CERTIFICATE_PRIVATE_SUBJECT_COMMON_NAME,
260      new base::StringValue(subject.common_name));
261  fields->SetField(PP_X509CERTIFICATE_PRIVATE_SUBJECT_LOCALITY_NAME,
262      new base::StringValue(subject.locality_name));
263  fields->SetField(PP_X509CERTIFICATE_PRIVATE_SUBJECT_STATE_OR_PROVINCE_NAME,
264      new base::StringValue(subject.state_or_province_name));
265  fields->SetField(PP_X509CERTIFICATE_PRIVATE_SUBJECT_COUNTRY_NAME,
266      new base::StringValue(subject.country_name));
267  fields->SetField(PP_X509CERTIFICATE_PRIVATE_SUBJECT_ORGANIZATION_NAME,
268      new base::StringValue(JoinString(subject.organization_names, '\n')));
269  fields->SetField(PP_X509CERTIFICATE_PRIVATE_SUBJECT_ORGANIZATION_UNIT_NAME,
270      new base::StringValue(JoinString(subject.organization_unit_names, '\n')));
271
272  const std::string& serial_number = cert.serial_number();
273  fields->SetField(PP_X509CERTIFICATE_PRIVATE_SERIAL_NUMBER,
274      base::BinaryValue::CreateWithCopiedBuffer(serial_number.data(),
275                                                serial_number.length()));
276  fields->SetField(PP_X509CERTIFICATE_PRIVATE_VALIDITY_NOT_BEFORE,
277      new base::FundamentalValue(cert.valid_start().ToDoubleT()));
278  fields->SetField(PP_X509CERTIFICATE_PRIVATE_VALIDITY_NOT_AFTER,
279      new base::FundamentalValue(cert.valid_expiry().ToDoubleT()));
280  std::string der;
281  net::X509Certificate::GetDEREncoded(cert.os_cert_handle(), &der);
282  fields->SetField(PP_X509CERTIFICATE_PRIVATE_RAW,
283      base::BinaryValue::CreateWithCopiedBuffer(der.data(), der.length()));
284  return true;
285}
286
287// static
288bool PepperTCPSocket::GetCertificateFields(
289    const char* der,
290    uint32_t length,
291    ppapi::PPB_X509Certificate_Fields* fields) {
292  scoped_refptr<net::X509Certificate> cert =
293      net::X509Certificate::CreateFromBytes(der, length);
294  if (!cert.get())
295    return false;
296  return GetCertificateFields(*cert, fields);
297}
298
299void PepperTCPSocket::SendReadACKError() {
300  manager_->Send(new PpapiMsg_PPBTCPSocket_ReadACK(
301    routing_id_, plugin_dispatcher_id_, socket_id_, false, std::string()));
302}
303
304void PepperTCPSocket::SendWriteACKError() {
305  manager_->Send(new PpapiMsg_PPBTCPSocket_WriteACK(
306      routing_id_, plugin_dispatcher_id_, socket_id_, false, 0));
307}
308
309void PepperTCPSocket::SendSSLHandshakeACK(bool succeeded) {
310  ppapi::PPB_X509Certificate_Fields certificate_fields;
311  if (succeeded) {
312    // Our socket is guaranteed to be an SSL socket if we get here.
313    net::SSLClientSocket* ssl_socket =
314        static_cast<net::SSLClientSocket*>(socket_.get());
315    net::SSLInfo ssl_info;
316    ssl_socket->GetSSLInfo(&ssl_info);
317    if (ssl_info.cert.get())
318      GetCertificateFields(*ssl_info.cert, &certificate_fields);
319  }
320  manager_->Send(new PpapiMsg_PPBTCPSocket_SSLHandshakeACK(
321      routing_id_,
322      plugin_dispatcher_id_,
323      socket_id_,
324      succeeded,
325      certificate_fields));
326}
327
328void PepperTCPSocket::SendSetBoolOptionACK(bool succeeded) {
329  manager_->Send(new PpapiMsg_PPBTCPSocket_SetBoolOptionACK(
330      routing_id_, plugin_dispatcher_id_, socket_id_, succeeded));
331}
332
333void PepperTCPSocket::OnResolveCompleted(int result) {
334  DCHECK(connection_state_ == CONNECT_IN_PROGRESS);
335
336  if (result != net::OK) {
337    SendConnectACKError();
338    connection_state_ = BEFORE_CONNECT;
339    return;
340  }
341
342  StartConnect(address_list_);
343}
344
345void PepperTCPSocket::OnConnectCompleted(int result) {
346  DCHECK(connection_state_ == CONNECT_IN_PROGRESS && socket_.get());
347
348  if (result != net::OK) {
349    SendConnectACKError();
350    connection_state_ = BEFORE_CONNECT;
351  } else {
352    net::IPEndPoint ip_end_point_local;
353    net::IPEndPoint ip_end_point_remote;
354    PP_NetAddress_Private local_addr =
355        NetAddressPrivateImpl::kInvalidNetAddress;
356    PP_NetAddress_Private remote_addr =
357        NetAddressPrivateImpl::kInvalidNetAddress;
358
359    if (socket_->GetLocalAddress(&ip_end_point_local) != net::OK ||
360        !NetAddressPrivateImpl::IPEndPointToNetAddress(
361            ip_end_point_local.address(),
362            ip_end_point_local.port(),
363            &local_addr) ||
364        socket_->GetPeerAddress(&ip_end_point_remote) != net::OK ||
365        !NetAddressPrivateImpl::IPEndPointToNetAddress(
366            ip_end_point_remote.address(),
367            ip_end_point_remote.port(),
368            &remote_addr)) {
369      SendConnectACKError();
370      connection_state_ = BEFORE_CONNECT;
371    } else {
372      manager_->Send(new PpapiMsg_PPBTCPSocket_ConnectACK(
373          routing_id_, plugin_dispatcher_id_, socket_id_, true,
374          local_addr, remote_addr));
375      connection_state_ = CONNECTED;
376    }
377  }
378}
379
380void PepperTCPSocket::OnSSLHandshakeCompleted(int result) {
381  DCHECK(connection_state_ == SSL_HANDSHAKE_IN_PROGRESS);
382
383  bool succeeded = result == net::OK;
384  SendSSLHandshakeACK(succeeded);
385  connection_state_ = succeeded ? SSL_CONNECTED : SSL_HANDSHAKE_FAILED;
386}
387
388void PepperTCPSocket::OnReadCompleted(int result) {
389  DCHECK(read_buffer_.get());
390
391  if (result > 0) {
392    manager_->Send(new PpapiMsg_PPBTCPSocket_ReadACK(
393        routing_id_, plugin_dispatcher_id_, socket_id_, true,
394        std::string(read_buffer_->data(), result)));
395  } else if (result == 0) {
396    end_of_file_reached_ = true;
397    manager_->Send(new PpapiMsg_PPBTCPSocket_ReadACK(
398        routing_id_, plugin_dispatcher_id_, socket_id_, true, std::string()));
399  } else {
400    SendReadACKError();
401  }
402  read_buffer_ = NULL;
403}
404
405void PepperTCPSocket::OnWriteCompleted(int result) {
406  DCHECK(write_buffer_base_.get());
407  DCHECK(write_buffer_.get());
408
409  // Note: For partial writes of 0 bytes, don't continue writing to avoid a
410  // likely infinite loop.
411  if (result > 0) {
412    write_buffer_->DidConsume(result);
413    if (write_buffer_->BytesRemaining() > 0) {
414      DoWrite();
415      return;
416    }
417  }
418
419  if (result >= 0) {
420    manager_->Send(new PpapiMsg_PPBTCPSocket_WriteACK(
421        routing_id_, plugin_dispatcher_id_, socket_id_, true,
422        write_buffer_->BytesConsumed()));
423  } else {
424    SendWriteACKError();
425  }
426
427  write_buffer_ = NULL;
428  write_buffer_base_ = NULL;
429}
430
431bool PepperTCPSocket::IsConnected() const {
432  return connection_state_ == CONNECTED || connection_state_ == SSL_CONNECTED;
433}
434
435bool PepperTCPSocket::IsSsl() const {
436 return connection_state_ == SSL_HANDSHAKE_IN_PROGRESS ||
437     connection_state_ == SSL_CONNECTED ||
438     connection_state_ == SSL_HANDSHAKE_FAILED;
439}
440
441void PepperTCPSocket::DoWrite() {
442  DCHECK(write_buffer_base_.get());
443  DCHECK(write_buffer_.get());
444  DCHECK_GT(write_buffer_->BytesRemaining(), 0);
445
446  int result = socket_->Write(write_buffer_, write_buffer_->BytesRemaining(),
447                              base::Bind(&PepperTCPSocket::OnWriteCompleted,
448                                         base::Unretained(this)));
449  if (result != net::ERR_IO_PENDING)
450    OnWriteCompleted(result);
451}
452
453}  // namespace content
454