src/extensions/browser/api/socket/udp_socket.cc

   1 // Copyright 2014 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 "extensions/browser/api/socket/udp_socket.h"
   6
   7 #include <algorithm>
   8
   9 #include "base/lazy_instance.h"
  10 #include "extensions/browser/api/api_resource.h"
  11 #include "net/base/ip_endpoint.h"
  12 #include "net/base/net_errors.h"
  13 #include "net/udp/datagram_socket.h"
  14 #include "net/udp/udp_client_socket.h"
  15
  16 namespace extensions {
  17
  18 static base::LazyInstance<
  19     BrowserContextKeyedAPIFactory<ApiResourceManager<ResumableUDPSocket> > >
  20     g_factory = LAZY_INSTANCE_INITIALIZER;
  21
  22 // static
  23 template <>
  24 BrowserContextKeyedAPIFactory<ApiResourceManager<ResumableUDPSocket> >*
  25 ApiResourceManager<ResumableUDPSocket>::GetFactoryInstance() {
  26   return g_factory.Pointer();
  27 }
  28
  29 UDPSocket::UDPSocket(const std::string& owner_extension_id)
  30     : Socket(owner_extension_id),
  31       socket_(net::DatagramSocket::DEFAULT_BIND,
  32               net::RandIntCallback(),
  33               NULL,
  34               net::NetLog::Source()) {}
  35
  36 UDPSocket::~UDPSocket() { Disconnect(); }
  37
  38 void UDPSocket::Connect(const std::string& address,
  39                         int port,
  40                         const CompletionCallback& callback) {
  41   int result = net::ERR_CONNECTION_FAILED;
  42   do {
  43     if (is_connected_)
  44       break;
  45
  46     net::IPEndPoint ip_end_point;
  47     if (!StringAndPortToIPEndPoint(address, port, &ip_end_point)) {
  48       result = net::ERR_ADDRESS_INVALID;
  49       break;
  50     }
  51
  52     result = socket_.Connect(ip_end_point);
  53     is_connected_ = (result == net::OK);
  54   } while (false);
  55
  56   callback.Run(result);
  57 }
  58
  59 int UDPSocket::Bind(const std::string& address, int port) {
  60   if (IsBound())
  61     return net::ERR_CONNECTION_FAILED;
  62
  63   net::IPEndPoint ip_end_point;
  64   if (!StringAndPortToIPEndPoint(address, port, &ip_end_point))
  65     return net::ERR_INVALID_ARGUMENT;
  66
  67   return socket_.Bind(ip_end_point);
  68 }
  69
  70 void UDPSocket::Disconnect() {
  71   is_connected_ = false;
  72   socket_.Close();
  73   read_callback_.Reset();
  74   recv_from_callback_.Reset();
  75   send_to_callback_.Reset();
  76   multicast_groups_.clear();
  77 }
  78
  79 void UDPSocket::Read(int count, const ReadCompletionCallback& callback) {
  80   DCHECK(!callback.is_null());
  81
  82   if (!read_callback_.is_null()) {
  83     callback.Run(net::ERR_IO_PENDING, NULL);
  84     return;
  85   } else {
  86     read_callback_ = callback;
  87   }
  88
  89   int result = net::ERR_FAILED;
  90   scoped_refptr<net::IOBuffer> io_buffer;
  91   do {
  92     if (count < 0) {
  93       result = net::ERR_INVALID_ARGUMENT;
  94       break;
  95     }
  96
  97     if (!socket_.is_connected()) {
  98       result = net::ERR_SOCKET_NOT_CONNECTED;
  99       break;
 100     }
 101
 102     io_buffer = new net::IOBuffer(count);
 103     result = socket_.Read(
 104         io_buffer.get(),
 105         count,
 106         base::Bind(
 107             &UDPSocket::OnReadComplete, base::Unretained(this), io_buffer));
 108   } while (false);
 109
 110   if (result != net::ERR_IO_PENDING)
 111     OnReadComplete(io_buffer, result);
 112 }
 113
 114 int UDPSocket::WriteImpl(net::IOBuffer* io_buffer,
 115                          int io_buffer_size,
 116                          const net::CompletionCallback& callback) {
 117   if (!socket_.is_connected())
 118     return net::ERR_SOCKET_NOT_CONNECTED;
 119   else
 120     return socket_.Write(io_buffer, io_buffer_size, callback);
 121 }
 122
 123 void UDPSocket::RecvFrom(int count,
 124                          const RecvFromCompletionCallback& callback) {
 125   DCHECK(!callback.is_null());
 126
 127   if (!recv_from_callback_.is_null()) {
 128     callback.Run(net::ERR_IO_PENDING, NULL, std::string(), 0);
 129     return;
 130   } else {
 131     recv_from_callback_ = callback;
 132   }
 133
 134   int result = net::ERR_FAILED;
 135   scoped_refptr<net::IOBuffer> io_buffer;
 136   scoped_refptr<IPEndPoint> address;
 137   do {
 138     if (count < 0) {
 139       result = net::ERR_INVALID_ARGUMENT;
 140       break;
 141     }
 142
 143     if (!socket_.is_connected()) {
 144       result = net::ERR_SOCKET_NOT_CONNECTED;
 145       break;
 146     }
 147
 148     io_buffer = new net::IOBuffer(count);
 149     address = new IPEndPoint();
 150     result = socket_.RecvFrom(io_buffer.get(),
 151                               count,
 152                               &address->data,
 153                               base::Bind(&UDPSocket::OnRecvFromComplete,
 154                                          base::Unretained(this),
 155                                          io_buffer,
 156                                          address));
 157   } while (false);
 158
 159   if (result != net::ERR_IO_PENDING)
 160     OnRecvFromComplete(io_buffer, address, result);
 161 }
 162
 163 void UDPSocket::SendTo(scoped_refptr<net::IOBuffer> io_buffer,
 164                        int byte_count,
 165                        const std::string& address,
 166                        int port,
 167                        const CompletionCallback& callback) {
 168   DCHECK(!callback.is_null());
 169
 170   if (!send_to_callback_.is_null()) {
 171     // TODO(penghuang): Put requests in a pending queue to support multiple
 172     // sendTo calls.
 173     callback.Run(net::ERR_IO_PENDING);
 174     return;
 175   } else {
 176     send_to_callback_ = callback;
 177   }
 178
 179   int result = net::ERR_FAILED;
 180   do {
 181     net::IPEndPoint ip_end_point;
 182     if (!StringAndPortToIPEndPoint(address, port, &ip_end_point)) {
 183       result = net::ERR_ADDRESS_INVALID;
 184       break;
 185     }
 186
 187     if (!socket_.is_connected()) {
 188       result = net::ERR_SOCKET_NOT_CONNECTED;
 189       break;
 190     }
 191
 192     result = socket_.SendTo(
 193         io_buffer.get(),
 194         byte_count,
 195         ip_end_point,
 196         base::Bind(&UDPSocket::OnSendToComplete, base::Unretained(this)));
 197   } while (false);
 198
 199   if (result != net::ERR_IO_PENDING)
 200     OnSendToComplete(result);
 201 }
 202
 203 bool UDPSocket::IsConnected() { return is_connected_; }
 204
 205 bool UDPSocket::GetPeerAddress(net::IPEndPoint* address) {
 206   return !socket_.GetPeerAddress(address);
 207 }
 208
 209 bool UDPSocket::GetLocalAddress(net::IPEndPoint* address) {
 210   return !socket_.GetLocalAddress(address);
 211 }
 212
 213 Socket::SocketType UDPSocket::GetSocketType() const { return Socket::TYPE_UDP; }
 214
 215 void UDPSocket::OnReadComplete(scoped_refptr<net::IOBuffer> io_buffer,
 216                                int result) {
 217   DCHECK(!read_callback_.is_null());
 218   read_callback_.Run(result, io_buffer);
 219   read_callback_.Reset();
 220 }
 221
 222 void UDPSocket::OnRecvFromComplete(scoped_refptr<net::IOBuffer> io_buffer,
 223                                    scoped_refptr<IPEndPoint> address,
 224                                    int result) {
 225   DCHECK(!recv_from_callback_.is_null());
 226   std::string ip;
 227   int port = 0;
 228   if (result > 0 && address.get()) {
 229     IPEndPointToStringAndPort(address->data, &ip, &port);
 230   }
 231   recv_from_callback_.Run(result, io_buffer, ip, port);
 232   recv_from_callback_.Reset();
 233 }
 234
 235 void UDPSocket::OnSendToComplete(int result) {
 236   DCHECK(!send_to_callback_.is_null());
 237   send_to_callback_.Run(result);
 238   send_to_callback_.Reset();
 239 }
 240
 241 bool UDPSocket::IsBound() { return socket_.is_connected(); }
 242
 243 int UDPSocket::JoinGroup(const std::string& address) {
 244   net::IPAddressNumber ip;
 245   if (!net::ParseIPLiteralToNumber(address, &ip))
 246     return net::ERR_ADDRESS_INVALID;
 247
 248   std::string normalized_address = net::IPAddressToString(ip);
 249   std::vector<std::string>::iterator find_result = std::find(
 250       multicast_groups_.begin(), multicast_groups_.end(), normalized_address);
 251   if (find_result != multicast_groups_.end())
 252     return net::ERR_ADDRESS_INVALID;
 253
 254   int rv = socket_.JoinGroup(ip);
 255   if (rv == 0)
 256     multicast_groups_.push_back(normalized_address);
 257   return rv;
 258 }
 259
 260 int UDPSocket::LeaveGroup(const std::string& address) {
 261   net::IPAddressNumber ip;
 262   if (!net::ParseIPLiteralToNumber(address, &ip))
 263     return net::ERR_ADDRESS_INVALID;
 264
 265   std::string normalized_address = net::IPAddressToString(ip);
 266   std::vector<std::string>::iterator find_result = std::find(
 267       multicast_groups_.begin(), multicast_groups_.end(), normalized_address);
 268   if (find_result == multicast_groups_.end())
 269     return net::ERR_ADDRESS_INVALID;
 270
 271   int rv = socket_.LeaveGroup(ip);
 272   if (rv == 0)
 273     multicast_groups_.erase(find_result);
 274   return rv;
 275 }
 276
 277 int UDPSocket::SetMulticastTimeToLive(int ttl) {
 278   return socket_.SetMulticastTimeToLive(ttl);
 279 }
 280
 281 int UDPSocket::SetMulticastLoopbackMode(bool loopback) {
 282   return socket_.SetMulticastLoopbackMode(loopback);
 283 }
 284
 285 const std::vector<std::string>& UDPSocket::GetJoinedGroups() const {
 286   return multicast_groups_;
 287 }
 288
 289 ResumableUDPSocket::ResumableUDPSocket(const std::string& owner_extension_id)
 290     : UDPSocket(owner_extension_id),
 291       persistent_(false),
 292       buffer_size_(0),
 293       paused_(false) {}
 294
 295 bool ResumableUDPSocket::IsPersistent() const { return persistent(); }
 296
 297 }  // namespace extensions