content/browser/renderer_host/pepper/pepper_tcp_socket.cc

   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/strings/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/host_port_pair.h"
  17 #include "net/base/io_buffer.h"
  18 #include "net/base/ip_endpoint.h"
  19 #include "net/base/net_errors.h"
  20 #include "net/cert/cert_verifier.h"
  21 #include "net/cert/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/host/error_conversion.h"
  29 #include "ppapi/proxy/ppapi_messages.h"
  30 #include "ppapi/shared_impl/private/net_address_private_impl.h"
  31 #include "ppapi/shared_impl/private/ppb_x509_certificate_private_shared.h"
  32 #include "ppapi/shared_impl/socket_option_data.h"
  33 #include "ppapi/shared_impl/tcp_socket_shared.h"
  34
  35 using ppapi::host::NetErrorToPepperError;
  36 using ppapi::NetAddressPrivateImpl;
  37
  38 namespace content {
  39
  40 PepperTCPSocket::PepperTCPSocket(PepperMessageFilter* manager,
  41                                  int32 routing_id,
  42                                  uint32 plugin_dispatcher_id,
  43                                  uint32 socket_id,
  44                                  bool private_api)
  45     : manager_(manager),
  46       routing_id_(routing_id),
  47       plugin_dispatcher_id_(plugin_dispatcher_id),
  48       socket_id_(socket_id),
  49       private_api_(private_api),
  50       connection_state_(BEFORE_CONNECT),
  51       end_of_file_reached_(false) {
  52   DCHECK(manager);
  53 }
  54
  55 PepperTCPSocket::PepperTCPSocket(PepperMessageFilter* manager,
  56                                  int32 routing_id,
  57                                  uint32 plugin_dispatcher_id,
  58                                  uint32 socket_id,
  59                                  net::StreamSocket* socket,
  60                                  bool private_api)
  61     : manager_(manager),
  62       routing_id_(routing_id),
  63       plugin_dispatcher_id_(plugin_dispatcher_id),
  64       socket_id_(socket_id),
  65       private_api_(private_api),
  66       connection_state_(CONNECTED),
  67       end_of_file_reached_(false),
  68       socket_(socket) {
  69   DCHECK(manager);
  70 }
  71
  72 PepperTCPSocket::~PepperTCPSocket() {
  73   // Make sure no further callbacks from socket_.
  74   if (socket_)
  75     socket_->Disconnect();
  76 }
  77
  78 void PepperTCPSocket::Connect(const std::string& host, uint16_t port) {
  79   DCHECK_CURRENTLY_ON(BrowserThread::IO);
  80
  81   if (connection_state_ != BEFORE_CONNECT) {
  82     SendConnectACKError(PP_ERROR_FAILED);
  83     return;
  84   }
  85
  86   connection_state_ = CONNECT_IN_PROGRESS;
  87   net::HostResolver::RequestInfo request_info(net::HostPortPair(host, port));
  88   resolver_.reset(
  89       new net::SingleRequestHostResolver(manager_->GetHostResolver()));
  90   int net_result = resolver_->Resolve(
  91       request_info,
  92       net::DEFAULT_PRIORITY,
  93       &address_list_,
  94       base::Bind(&PepperTCPSocket::OnResolveCompleted, base::Unretained(this)),
  95       net::BoundNetLog());
  96   if (net_result != net::ERR_IO_PENDING)
  97     OnResolveCompleted(net_result);
  98 }
  99
 100 void PepperTCPSocket::ConnectWithNetAddress(
 101     const PP_NetAddress_Private& net_addr) {
 102   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 103
 104   if (connection_state_ != BEFORE_CONNECT) {
 105     SendConnectACKError(PP_ERROR_FAILED);
 106     return;
 107   }
 108
 109   net::IPAddressNumber address;
 110   int port;
 111   if (!NetAddressPrivateImpl::NetAddressToIPEndPoint(
 112           net_addr, &address, &port)) {
 113     SendConnectACKError(PP_ERROR_ADDRESS_INVALID);
 114     return;
 115   }
 116
 117   // Copy the single IPEndPoint to address_list_.
 118   address_list_.clear();
 119   address_list_.push_back(net::IPEndPoint(address, port));
 120   connection_state_ = CONNECT_IN_PROGRESS;
 121   StartConnect(address_list_);
 122 }
 123
 124 void PepperTCPSocket::SSLHandshake(
 125     const std::string& server_name,
 126     uint16_t server_port,
 127     const std::vector<std::vector<char> >& trusted_certs,
 128     const std::vector<std::vector<char> >& untrusted_certs) {
 129   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 130
 131   // Allow to do SSL handshake only if currently the socket has been connected
 132   // and there isn't pending read or write.
 133   // IsConnected() includes the state that SSL handshake has been finished and
 134   // therefore isn't suitable here.
 135   if (connection_state_ != CONNECTED || read_buffer_.get() ||
 136       write_buffer_base_.get() || write_buffer_.get()) {
 137     SendSSLHandshakeACK(false);
 138     return;
 139   }
 140
 141   connection_state_ = SSL_HANDSHAKE_IN_PROGRESS;
 142   // TODO(raymes,rsleevi): Use trusted/untrusted certificates when connecting.
 143
 144   scoped_ptr<net::ClientSocketHandle> handle(new net::ClientSocketHandle());
 145   handle->SetSocket(socket_.Pass());
 146   net::ClientSocketFactory* factory =
 147       net::ClientSocketFactory::GetDefaultFactory();
 148   net::HostPortPair host_port_pair(server_name, server_port);
 149   net::SSLClientSocketContext ssl_context;
 150   ssl_context.cert_verifier = manager_->GetCertVerifier();
 151   ssl_context.transport_security_state = manager_->GetTransportSecurityState();
 152   socket_ = factory->CreateSSLClientSocket(
 153       handle.Pass(), host_port_pair, manager_->ssl_config(), ssl_context);
 154   if (!socket_) {
 155     LOG(WARNING) << "Failed to create an SSL client socket.";
 156     OnSSLHandshakeCompleted(net::ERR_UNEXPECTED);
 157     return;
 158   }
 159
 160   int net_result = socket_->Connect(base::Bind(
 161       &PepperTCPSocket::OnSSLHandshakeCompleted, base::Unretained(this)));
 162   if (net_result != net::ERR_IO_PENDING)
 163     OnSSLHandshakeCompleted(net_result);
 164 }
 165
 166 void PepperTCPSocket::Read(int32 bytes_to_read) {
 167   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 168
 169   if (!IsConnected() || end_of_file_reached_) {
 170     SendReadACKError(PP_ERROR_FAILED);
 171     return;
 172   }
 173
 174   if (read_buffer_.get()) {
 175     SendReadACKError(PP_ERROR_INPROGRESS);
 176     return;
 177   }
 178
 179   if (bytes_to_read <= 0 ||
 180       bytes_to_read > ppapi::TCPSocketShared::kMaxReadSize) {
 181     SendReadACKError(PP_ERROR_BADARGUMENT);
 182     return;
 183   }
 184
 185   read_buffer_ = new net::IOBuffer(bytes_to_read);
 186   int net_result = socket_->Read(
 187       read_buffer_.get(),
 188       bytes_to_read,
 189       base::Bind(&PepperTCPSocket::OnReadCompleted, base::Unretained(this)));
 190   if (net_result != net::ERR_IO_PENDING)
 191     OnReadCompleted(net_result);
 192 }
 193
 194 void PepperTCPSocket::Write(const std::string& data) {
 195   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 196
 197   if (!IsConnected()) {
 198     SendWriteACKError(PP_ERROR_FAILED);
 199     return;
 200   }
 201
 202   if (write_buffer_base_.get() || write_buffer_.get()) {
 203     SendWriteACKError(PP_ERROR_INPROGRESS);
 204     return;
 205   }
 206
 207   size_t data_size = data.size();
 208   if (data_size == 0 ||
 209       data_size > static_cast<size_t>(ppapi::TCPSocketShared::kMaxWriteSize)) {
 210     SendWriteACKError(PP_ERROR_BADARGUMENT);
 211     return;
 212   }
 213
 214   write_buffer_base_ = new net::IOBuffer(data_size);
 215   memcpy(write_buffer_base_->data(), data.data(), data_size);
 216   write_buffer_ =
 217       new net::DrainableIOBuffer(write_buffer_base_.get(), data_size);
 218   DoWrite();
 219 }
 220
 221 void PepperTCPSocket::SetOption(PP_TCPSocket_Option name,
 222                                 const ppapi::SocketOptionData& value) {
 223   DCHECK_CURRENTLY_ON(BrowserThread::IO);
 224
 225   if (!IsConnected() || IsSsl()) {
 226     SendSetOptionACK(PP_ERROR_FAILED);
 227     return;
 228   }
 229
 230   net::TCPClientSocket* tcp_socket =
 231       static_cast<net::TCPClientSocket*>(socket_.get());
 232   DCHECK(tcp_socket);
 233
 234   switch (name) {
 235     case PP_TCPSOCKET_OPTION_NO_DELAY: {
 236       bool boolean_value = false;
 237       if (!value.GetBool(&boolean_value)) {
 238         SendSetOptionACK(PP_ERROR_BADARGUMENT);
 239         return;
 240       }
 241
 242       SendSetOptionACK(tcp_socket->SetNoDelay(boolean_value) ? PP_OK
 243                                                              : PP_ERROR_FAILED);
 244       return;
 245     }
 246     case PP_TCPSOCKET_OPTION_SEND_BUFFER_SIZE:
 247     case PP_TCPSOCKET_OPTION_RECV_BUFFER_SIZE: {
 248       int32_t integer_value = 0;
 249       if (!value.GetInt32(&integer_value) || integer_value <= 0) {
 250         SendSetOptionACK(PP_ERROR_BADARGUMENT);
 251         return;
 252       }
 253
 254       int net_result = net::OK;
 255       if (name == PP_TCPSOCKET_OPTION_SEND_BUFFER_SIZE) {
 256         if (integer_value > ppapi::TCPSocketShared::kMaxSendBufferSize) {
 257           SendSetOptionACK(PP_ERROR_BADARGUMENT);
 258           return;
 259         }
 260         net_result = tcp_socket->SetSendBufferSize(integer_value);
 261       } else {
 262         if (integer_value > ppapi::TCPSocketShared::kMaxReceiveBufferSize) {
 263           SendSetOptionACK(PP_ERROR_BADARGUMENT);
 264           return;
 265         }
 266         net_result = tcp_socket->SetReceiveBufferSize(integer_value);
 267       }
 268       // TODO(wtc): Add error mapping.
 269       SendSetOptionACK((net_result == net::OK) ? PP_OK : PP_ERROR_FAILED);
 270       return;
 271     }
 272     default: {
 273       NOTREACHED();
 274       SendSetOptionACK(PP_ERROR_BADARGUMENT);
 275       return;
 276     }
 277   }
 278 }
 279
 280 void PepperTCPSocket::StartConnect(const net::AddressList& addresses) {
 281   DCHECK(connection_state_ == CONNECT_IN_PROGRESS);
 282
 283   socket_.reset(
 284       new net::TCPClientSocket(addresses, NULL, net::NetLog::Source()));
 285   int net_result = socket_->Connect(
 286       base::Bind(&PepperTCPSocket::OnConnectCompleted, base::Unretained(this)));
 287   if (net_result != net::ERR_IO_PENDING)
 288     OnConnectCompleted(net_result);
 289 }
 290
 291 void PepperTCPSocket::SendConnectACKError(int32_t error) {
 292   manager_->Send(new PpapiMsg_PPBTCPSocket_ConnectACK(
 293       routing_id_,
 294       plugin_dispatcher_id_,
 295       socket_id_,
 296       error,
 297       NetAddressPrivateImpl::kInvalidNetAddress,
 298       NetAddressPrivateImpl::kInvalidNetAddress));
 299 }
 300
 301 // static
 302 bool PepperTCPSocket::GetCertificateFields(
 303     const net::X509Certificate& cert,
 304     ppapi::PPB_X509Certificate_Fields* fields) {
 305   const net::CertPrincipal& issuer = cert.issuer();
 306   fields->SetField(PP_X509CERTIFICATE_PRIVATE_ISSUER_COMMON_NAME,
 307                    new base::StringValue(issuer.common_name));
 308   fields->SetField(PP_X509CERTIFICATE_PRIVATE_ISSUER_LOCALITY_NAME,
 309                    new base::StringValue(issuer.locality_name));
 310   fields->SetField(PP_X509CERTIFICATE_PRIVATE_ISSUER_STATE_OR_PROVINCE_NAME,
 311                    new base::StringValue(issuer.state_or_province_name));
 312   fields->SetField(PP_X509CERTIFICATE_PRIVATE_ISSUER_COUNTRY_NAME,
 313                    new base::StringValue(issuer.country_name));
 314   fields->SetField(
 315       PP_X509CERTIFICATE_PRIVATE_ISSUER_ORGANIZATION_NAME,
 316       new base::StringValue(JoinString(issuer.organization_names, '\n')));
 317   fields->SetField(
 318       PP_X509CERTIFICATE_PRIVATE_ISSUER_ORGANIZATION_UNIT_NAME,
 319       new base::StringValue(JoinString(issuer.organization_unit_names, '\n')));
 320
 321   const net::CertPrincipal& subject = cert.subject();
 322   fields->SetField(PP_X509CERTIFICATE_PRIVATE_SUBJECT_COMMON_NAME,
 323                    new base::StringValue(subject.common_name));
 324   fields->SetField(PP_X509CERTIFICATE_PRIVATE_SUBJECT_LOCALITY_NAME,
 325                    new base::StringValue(subject.locality_name));
 326   fields->SetField(PP_X509CERTIFICATE_PRIVATE_SUBJECT_STATE_OR_PROVINCE_NAME,
 327                    new base::StringValue(subject.state_or_province_name));
 328   fields->SetField(PP_X509CERTIFICATE_PRIVATE_SUBJECT_COUNTRY_NAME,
 329                    new base::StringValue(subject.country_name));
 330   fields->SetField(
 331       PP_X509CERTIFICATE_PRIVATE_SUBJECT_ORGANIZATION_NAME,
 332       new base::StringValue(JoinString(subject.organization_names, '\n')));
 333   fields->SetField(
 334       PP_X509CERTIFICATE_PRIVATE_SUBJECT_ORGANIZATION_UNIT_NAME,
 335       new base::StringValue(JoinString(subject.organization_unit_names, '\n')));
 336
 337   const std::string& serial_number = cert.serial_number();
 338   fields->SetField(PP_X509CERTIFICATE_PRIVATE_SERIAL_NUMBER,
 339                    base::BinaryValue::CreateWithCopiedBuffer(
 340                        serial_number.data(), serial_number.length()));
 341   fields->SetField(PP_X509CERTIFICATE_PRIVATE_VALIDITY_NOT_BEFORE,
 342                    new base::FundamentalValue(cert.valid_start().ToDoubleT()));
 343   fields->SetField(PP_X509CERTIFICATE_PRIVATE_VALIDITY_NOT_AFTER,
 344                    new base::FundamentalValue(cert.valid_expiry().ToDoubleT()));
 345   std::string der;
 346   net::X509Certificate::GetDEREncoded(cert.os_cert_handle(), &der);
 347   fields->SetField(
 348       PP_X509CERTIFICATE_PRIVATE_RAW,
 349       base::BinaryValue::CreateWithCopiedBuffer(der.data(), der.length()));
 350   return true;
 351 }
 352
 353 // static
 354 bool PepperTCPSocket::GetCertificateFields(
 355     const char* der,
 356     uint32_t length,
 357     ppapi::PPB_X509Certificate_Fields* fields) {
 358   scoped_refptr<net::X509Certificate> cert =
 359       net::X509Certificate::CreateFromBytes(der, length);
 360   if (!cert.get())
 361     return false;
 362   return GetCertificateFields(*cert.get(), fields);
 363 }
 364
 365 void PepperTCPSocket::SendReadACKError(int32_t error) {
 366   manager_->Send(new PpapiMsg_PPBTCPSocket_ReadACK(
 367       routing_id_, plugin_dispatcher_id_, socket_id_, error, std::string()));
 368 }
 369
 370 void PepperTCPSocket::SendWriteACKError(int32_t error) {
 371   DCHECK_GT(0, error);
 372   manager_->Send(new PpapiMsg_PPBTCPSocket_WriteACK(
 373       routing_id_, plugin_dispatcher_id_, socket_id_, error));
 374 }
 375
 376 void PepperTCPSocket::SendSSLHandshakeACK(bool succeeded) {
 377   ppapi::PPB_X509Certificate_Fields certificate_fields;
 378   if (succeeded) {
 379     // Our socket is guaranteed to be an SSL socket if we get here.
 380     net::SSLClientSocket* ssl_socket =
 381         static_cast<net::SSLClientSocket*>(socket_.get());
 382     net::SSLInfo ssl_info;
 383     ssl_socket->GetSSLInfo(&ssl_info);
 384     if (ssl_info.cert.get())
 385       GetCertificateFields(*ssl_info.cert.get(), &certificate_fields);
 386   }
 387   manager_->Send(
 388       new PpapiMsg_PPBTCPSocket_SSLHandshakeACK(routing_id_,
 389                                                 plugin_dispatcher_id_,
 390                                                 socket_id_,
 391                                                 succeeded,
 392                                                 certificate_fields));
 393 }
 394
 395 void PepperTCPSocket::SendSetOptionACK(int32_t result) {
 396   manager_->Send(new PpapiMsg_PPBTCPSocket_SetOptionACK(
 397       routing_id_, plugin_dispatcher_id_, socket_id_, result));
 398 }
 399
 400 void PepperTCPSocket::OnResolveCompleted(int net_result) {
 401   DCHECK(connection_state_ == CONNECT_IN_PROGRESS);
 402
 403   if (net_result != net::OK) {
 404     SendConnectACKError(NetErrorToPepperError(net_result));
 405     connection_state_ = BEFORE_CONNECT;
 406     return;
 407   }
 408
 409   StartConnect(address_list_);
 410 }
 411
 412 void PepperTCPSocket::OnConnectCompleted(int net_result) {
 413   DCHECK(connection_state_ == CONNECT_IN_PROGRESS && socket_.get());
 414
 415   int32_t pp_result = NetErrorToPepperError(net_result);
 416   do {
 417     if (pp_result != PP_OK)
 418       break;
 419
 420     net::IPEndPoint ip_end_point_local;
 421     net::IPEndPoint ip_end_point_remote;
 422     pp_result =
 423         NetErrorToPepperError(socket_->GetLocalAddress(&ip_end_point_local));
 424     if (pp_result != PP_OK)
 425       break;
 426     pp_result =
 427         NetErrorToPepperError(socket_->GetPeerAddress(&ip_end_point_remote));
 428     if (pp_result != PP_OK)
 429       break;
 430
 431     PP_NetAddress_Private local_addr =
 432         NetAddressPrivateImpl::kInvalidNetAddress;
 433     PP_NetAddress_Private remote_addr =
 434         NetAddressPrivateImpl::kInvalidNetAddress;
 435     if (!NetAddressPrivateImpl::IPEndPointToNetAddress(
 436             ip_end_point_local.address(),
 437             ip_end_point_local.port(),
 438             &local_addr) ||
 439         !NetAddressPrivateImpl::IPEndPointToNetAddress(
 440             ip_end_point_remote.address(),
 441             ip_end_point_remote.port(),
 442             &remote_addr)) {
 443       pp_result = PP_ERROR_ADDRESS_INVALID;
 444       break;
 445     }
 446
 447     manager_->Send(new PpapiMsg_PPBTCPSocket_ConnectACK(routing_id_,
 448                                                         plugin_dispatcher_id_,
 449                                                         socket_id_,
 450                                                         PP_OK,
 451                                                         local_addr,
 452                                                         remote_addr));
 453     connection_state_ = CONNECTED;
 454     return;
 455   } while (false);
 456
 457   SendConnectACKError(pp_result);
 458   connection_state_ = BEFORE_CONNECT;
 459 }
 460
 461 void PepperTCPSocket::OnSSLHandshakeCompleted(int net_result) {
 462   DCHECK(connection_state_ == SSL_HANDSHAKE_IN_PROGRESS);
 463
 464   bool succeeded = net_result == net::OK;
 465   SendSSLHandshakeACK(succeeded);
 466   connection_state_ = succeeded ? SSL_CONNECTED : SSL_HANDSHAKE_FAILED;
 467 }
 468
 469 void PepperTCPSocket::OnReadCompleted(int net_result) {
 470   DCHECK(read_buffer_.get());
 471
 472   if (net_result > 0) {
 473     manager_->Send(new PpapiMsg_PPBTCPSocket_ReadACK(
 474         routing_id_,
 475         plugin_dispatcher_id_,
 476         socket_id_,
 477         PP_OK,
 478         std::string(read_buffer_->data(), net_result)));
 479   } else if (net_result == 0) {
 480     end_of_file_reached_ = true;
 481     manager_->Send(new PpapiMsg_PPBTCPSocket_ReadACK(
 482         routing_id_, plugin_dispatcher_id_, socket_id_, PP_OK, std::string()));
 483   } else {
 484     SendReadACKError(NetErrorToPepperError(net_result));
 485   }
 486   read_buffer_ = NULL;
 487 }
 488
 489 void PepperTCPSocket::OnWriteCompleted(int net_result) {
 490   DCHECK(write_buffer_base_.get());
 491   DCHECK(write_buffer_.get());
 492
 493   // Note: For partial writes of 0 bytes, don't continue writing to avoid a
 494   // likely infinite loop.
 495   if (net_result > 0) {
 496     write_buffer_->DidConsume(net_result);
 497     if (write_buffer_->BytesRemaining() > 0) {
 498       DoWrite();
 499       return;
 500     }
 501   }
 502
 503   if (net_result >= 0) {
 504     manager_->Send(
 505         new PpapiMsg_PPBTCPSocket_WriteACK(routing_id_,
 506                                            plugin_dispatcher_id_,
 507                                            socket_id_,
 508                                            write_buffer_->BytesConsumed()));
 509   } else {
 510     SendWriteACKError(NetErrorToPepperError(net_result));
 511   }
 512
 513   write_buffer_ = NULL;
 514   write_buffer_base_ = NULL;
 515 }
 516
 517 bool PepperTCPSocket::IsConnected() const {
 518   return connection_state_ == CONNECTED || connection_state_ == SSL_CONNECTED;
 519 }
 520
 521 bool PepperTCPSocket::IsSsl() const {
 522   return connection_state_ == SSL_HANDSHAKE_IN_PROGRESS ||
 523          connection_state_ == SSL_CONNECTED ||
 524          connection_state_ == SSL_HANDSHAKE_FAILED;
 525 }
 526
 527 void PepperTCPSocket::DoWrite() {
 528   DCHECK(write_buffer_base_.get());
 529   DCHECK(write_buffer_.get());
 530   DCHECK_GT(write_buffer_->BytesRemaining(), 0);
 531
 532   int net_result = socket_->Write(
 533       write_buffer_.get(),
 534       write_buffer_->BytesRemaining(),
 535       base::Bind(&PepperTCPSocket::OnWriteCompleted, base::Unretained(this)));
 536   if (net_result != net::ERR_IO_PENDING)
 537     OnWriteCompleted(net_result);
 538 }
 539
 540 }  // namespace content