server/Server.cpp

   1 //\r
   2 // Server.cpp\r
   3 //\r
   4 \r
   5 #include "Server.hpp"\r
   6 #include "version.hpp"\r
   7 #include <algorithm>\r
   8 #include <boost/make_shared.hpp>\r
   9 #include <boost/foreach.hpp>\r
  10 #include "../common/Logger.hpp"\r
  11 #include "../common/network/Command.hpp"\r
  12 #include "../common/network/Utils.hpp"\r
  13 \r
  14 namespace network {\r
  15 \r
  16     Server::Server(Config& config) :\r
  17                         config_(config),\r
  18             endpoint_(tcp::v4(), config.port()),\r
  19             acceptor_(io_service_, endpoint_),\r
  20             socket_udp_(io_service_, udp::endpoint(udp::v4(), config.port())),\r
  21             udp_packet_count_(0)\r
  22     {\r
  23     }\r
  24 \r
  25     void Server::Start(CallbackFuncPtr callback)\r
  26     {\r
  27         callback_ = std::make_shared<CallbackFunc>(\r
  28                 [&](network::Command c){\r
  29 \r
  30             // ログアウト\r
  31             if (c.header() == network::header::FatalConnectionError) {\r
  32                 if (callback) {\r
  33                                         (*callback)(c);\r
  34                                 }\r
  35             } else if (auto session = c.session().lock()) {\r
  36                                 auto read_average = session->GetReadByteAverage();\r
  37                                 if (read_average > config_.receive_limit_2()) {\r
  38                                         Logger::Info(_T("Banished a session: %d %dbyte/s"), session->id(), read_average);\r
  39                                         session->Close();\r
  40                                 } else if(read_average > config_.receive_limit_1()) {\r
  41                                         Logger::Info(_T("Receive limit exceeded: %d: %d byte/s"), session->id(), read_average);\r
  42                                 } else {\r
  43                                         if (callback) {\r
  44                                                 (*callback)(c);\r
  45                                         }\r
  46                 }\r
  47             }\r
  48 \r
  49         });\r
  50 \r
  51         {\r
  52         auto new_session = boost::make_shared<ServerSession>(io_service_);\r
  53         acceptor_.async_accept(new_session->tcp_socket(),\r
  54                               boost::bind(&Server::ReceiveSession, this, new_session, boost::asio::placeholders::error));\r
  55         }\r
  56 \r
  57         {\r
  58             socket_udp_.async_receive_from(\r
  59                 boost::asio::buffer(receive_buf_udp_, UDP_MAX_RECEIVE_LENGTH), sender_endpoint_,\r
  60                 boost::bind(&Server::ReceiveUDP, this,\r
  61                   boost::asio::placeholders::error,\r
  62                   boost::asio::placeholders::bytes_transferred));\r
  63         }\r
  64 \r
  65         boost::asio::io_service::work work(io_service_);\r
  66         io_service_.run();\r
  67     }\r
  68 \r
  69     void Server::Stop()\r
  70     {\r
  71         io_service_.stop();\r
  72                 Logger::Info("stop server");\r
  73     }\r
  74     void Server::Stop(int innterrupt_type)\r
  75     {\r
  76         io_service_.stop();\r
  77         Logger::Info(_T("stop server innterrupt_type=%d"),innterrupt_type);\r
  78     }\r
  79 \r
  80         int Server::GetUserCount() const\r
  81         {\r
  82                 auto count = std::count_if(sessions_.begin(), sessions_.end(),\r
  83                         [](const SessionWeakPtr& s){ return !s.expired() && s.lock()->online(); });\r
  84 \r
  85                 return count;\r
  86         }\r
  87 \r
  88         std::string Server::GetStatusJSON() const\r
  89         {\r
  90                 auto msg = (\r
  91                                         boost::format("{\"nam\":\"%s\",\"ver\":\"%d.%d.%d\",\"cnt\":%d,\"cap\":%d,\"stg\":\"%s\"}")\r
  92                                                 % config_.server_name()\r
  93                                                 % MMO_VERSION_MAJOR % MMO_VERSION_MINOR % MMO_VERSION_REVISION\r
  94                                                 % GetUserCount()\r
  95                                                 % config_.capacity()\r
  96                                                 % config_.stage()\r
  97                                         ).str();\r
  98 \r
  99                 return msg;\r
 100         }\r
 101 \r
 102         std::string Server::GetFullStatus() const\r
 103         {\r
 104                 using namespace boost::property_tree;\r
 105                 ptree xml_ptree;\r
 106 \r
 107                 xml_ptree.put_child("config", config_.pt());\r
 108 \r
 109                 std::stringstream stream;\r
 110                 write_xml(stream, xml_ptree);\r
 111                 return stream.str();\r
 112         }\r
 113 \r
 114     bool Server::Empty() const\r
 115     {\r
 116         return GetUserCount() == 0;\r
 117     }\r
 118 \r
 119         bool Server::IsBlockedAddress(const boost::asio::ip::address& address)\r
 120         {\r
 121                 BOOST_FOREACH(const auto& pattern, config_.blocking_address_patterns()) {\r
 122                         if (network::Utils::MatchWithWildcard(pattern, address.to_string())) {\r
 123                                 return true;\r
 124                         }\r
 125                 }\r
 126                 return false;\r
 127         }\r
 128 \r
 129     void Server::ReceiveSession(const SessionPtr& session, const boost::system::error_code& error)\r
 130     {\r
 131                 \r
 132                 config_.Reload();\r
 133 \r
 134                 const auto address = session->tcp_socket().remote_endpoint().address();\r
 135 \r
 136                 // 拒否IPでないか判定\r
 137                 if(IsBlockedAddress(address)) {\r
 138                         Logger::Info("Blocked IP Address: %s", address);\r
 139             session->Close();\r
 140 \r
 141                 } else {\r
 142             session->set_on_receive(callback_);\r
 143             session->Start();\r
 144             sessions_.push_back(SessionWeakPtr(session));\r
 145 \r
 146             // クライアント情報を要求\r
 147             session->Send(ClientRequestedClientInfo());\r
 148         }\r
 149 \r
 150         auto new_session = boost::make_shared<ServerSession>(io_service_);\r
 151          acceptor_.async_accept(new_session->tcp_socket(),\r
 152                  boost::bind(&Server::ReceiveSession, this, new_session, boost::asio::placeholders::error));\r
 153 \r
 154                 RefreshSession();\r
 155     }\r
 156 \r
 157         void Server::RefreshSession()\r
 158         {\r
 159                 // 使用済のセッションのポインタを破棄\r
 160         auto it = std::remove_if(sessions_.begin(), sessions_.end(),\r
 161                 [](const SessionWeakPtr& ptr){\r
 162             return ptr.expired();\r
 163         });\r
 164         sessions_.erase(it, sessions_.end());\r
 165                 Logger::Info("Active connection: %d", GetUserCount());\r
 166         }\r
 167 \r
 168     void Server::SendAll(const Command& command, int channel, bool limited)\r
 169     {\r
 170         BOOST_FOREACH(SessionWeakPtr& ptr, sessions_) {\r
 171             if (auto session = ptr.lock()) {\r
 172                                 if (channel < 0 || (channel >= 0 && session->channel() == channel)) {\r
 173                                         if (!limited || session->write_average_limit() > session->GetWriteByteAverage()) {\r
 174                                                 session->Send(command);\r
 175                                         }\r
 176                                 }\r
 177             }\r
 178         }\r
 179     }\r
 180 \r
 181     void Server::SendOthers(const Command& command, uint32_t self_id, int channel, bool limited)\r
 182     {\r
 183         BOOST_FOREACH(SessionWeakPtr& ptr, sessions_) {\r
 184             if (auto session = ptr.lock()) {\r
 185                                 if (channel < 0 || (channel >= 0 && session->channel() == channel)) {\r
 186                                         if (!limited || session->write_average_limit() > session->GetWriteByteAverage()) {\r
 187                                                 if (session->id() != self_id) {\r
 188                                                         session->Send(command);\r
 189                                                 }\r
 190                                         }\r
 191                                 }\r
 192             }\r
 193         }\r
 194     }\r
 195         \r
 196     void Server::SendTo(const Command& command, uint32_t user_id)\r
 197         {\r
 198                 auto it = std::find_if(sessions_.begin(), sessions_.end(),\r
 199                         [user_id](SessionWeakPtr& ptr){\r
 200                                 return ptr.lock()->id() == user_id;\r
 201                         });\r
 202                 \r
 203                 if (it != sessions_.end()) {\r
 204                         it->lock()->Send(command);\r
 205                 }\r
 206         }\r
 207 \r
 208     void Server::SendUDPTestPacket(const std::string& ip_address, uint16_t port)\r
 209     {\r
 210         using boost::asio::ip::udp;\r
 211 \r
 212         std::stringstream port_str;\r
 213         port_str << (int)port;\r
 214 \r
 215         udp::resolver resolver(io_service_);\r
 216         udp::resolver::query query(udp::v4(), ip_address.c_str(), port_str.str().c_str());\r
 217         udp::resolver::iterator iterator = resolver.resolve(query);\r
 218 \r
 219         static char request[] = "MMO UDP Test Packet";\r
 220         for (int i = 0; i < UDP_TEST_PACKET_TIME; i++) {\r
 221 \r
 222             io_service_.post(boost::bind(&Server::DoWriteUDP, this, request, *iterator));\r
 223         }\r
 224     }\r
 225 \r
 226     void Server::SendUDP(const std::string& message, const boost::asio::ip::udp::endpoint endpoint)\r
 227     {\r
 228                 io_service_.post(boost::bind(&Server::DoWriteUDP, this, message, endpoint));\r
 229     }\r
 230 \r
 231     void Server::ReceiveUDP(const boost::system::error_code& error, size_t bytes_recvd)\r
 232     {\r
 233         if (bytes_recvd > 0) {\r
 234             std::string buffer(receive_buf_udp_, bytes_recvd);\r
 235             FetchUDP(buffer, sender_endpoint_);\r
 236         }\r
 237         if (!error) {\r
 238           socket_udp_.async_receive_from(\r
 239               boost::asio::buffer(receive_buf_udp_, UDP_MAX_RECEIVE_LENGTH), sender_endpoint_,\r
 240               boost::bind(&Server::ReceiveUDP, this,\r
 241                 boost::asio::placeholders::error,\r
 242                 boost::asio::placeholders::bytes_transferred));\r
 243         } else {\r
 244             Logger::Error("%s", error.message());\r
 245         }\r
 246     }\r
 247 \r
 248     void Server::DoWriteUDP(const std::string& msg, const udp::endpoint& endpoint)\r
 249     {\r
 250         boost::shared_ptr<std::string> s = \r
 251               boost::make_shared<std::string>(msg.data(), msg.size());\r
 252 \r
 253         socket_udp_.async_send_to(\r
 254             boost::asio::buffer(s->data(), s->size()), endpoint,\r
 255             boost::bind(&Server::WriteUDP, this,\r
 256               boost::asio::placeholders::error, s));\r
 257     }\r
 258 \r
 259     void Server::WriteUDP(const boost::system::error_code& error, boost::shared_ptr<std::string> holder)\r
 260     {\r
 261 //        if (!error) {\r
 262 //            if (!send_queue_.empty()) {\r
 263 //                  send_queue_.pop();\r
 264 //                  if (!send_queue_.empty())\r
 265 //                  {\r
 266 //                    boost::asio::async_write(socket_tcp_,\r
 267 //                        boost::asio::buffer(send_queue_.front().data(),\r
 268 //                          send_queue_.front().size()),\r
 269 //                        boost::bind(&Session::WriteTCP, this,\r
 270 //                          boost::asio::placeholders::error));\r
 271 //                  }\r
 272 //            }\r
 273 //        } else {\r
 274 //            FatalError();\r
 275 //        }\r
 276     }\r
 277 \r
 278     void Server::FetchUDP(const std::string& buffer, const boost::asio::ip::udp::endpoint endpoint)\r
 279     {\r
 280         uint8_t header;\r
 281         std::string body;\r
 282         SessionWeakPtr session;\r
 283 \r
 284                 // IPアドレスとポートからセッションを特定\r
 285                 auto it = std::find_if(sessions_.begin(), sessions_.end(),\r
 286                         [&endpoint](const SessionWeakPtr& session) -> bool {\r
 287                                 if (auto session_ptr = session.lock()) {\r
 288 \r
 289                                         const auto session_endpoint = session_ptr->tcp_socket().remote_endpoint();\r
 290                                         const auto session_port = session_ptr->udp_port();\r
 291 \r
 292                                         return (session_endpoint.address() == endpoint.address() &&\r
 293                                                 session_port == endpoint.port());\r
 294 \r
 295                                 } else {\r
 296                                         return false;\r
 297                                 }\r
 298                         });\r
 299 \r
 300                 if (it != sessions_.end()) {\r
 301                         session = *it;\r
 302                         Logger::Debug("Receive UDP Command: %d", session.lock()->id());\r
 303                 } else {\r
 304                         Logger::Debug("Receive anonymous UDP Command");\r
 305                 }\r
 306 \r
 307         if (buffer.size() > network::Utils::Deserialize(buffer, &header)) {\r
 308                         body = buffer.substr(sizeof(header));\r
 309                 }\r
 310 \r
 311         // 復号\r
 312         if (session.lock() && header == header::ENCRYPT_HEADER) {\r
 313             body.erase(0, sizeof(header));\r
 314                         body = session.lock()->encrypter().Decrypt(body);\r
 315             Utils::Deserialize(body, &header);\r
 316                         body = buffer.substr(sizeof(header));\r
 317         }\r
 318 \r
 319                 if (header == network::header::ServerRequstedStatus) {\r
 320                         SendUDP(GetStatusJSON(), endpoint);\r
 321                 } else {\r
 322                         if (callback_) {\r
 323                                 (*callback_)(Command(static_cast<network::header::CommandHeader>(header), body, session));\r
 324                         }\r
 325                 }\r
 326 \r
 327     }\r
 328 \r
 329     void Server::ServerSession::Start()\r
 330     {\r
 331         online_ = true;\r
 332 \r
 333         // Nagleアルゴリズムを無効化\r
 334         socket_tcp_.set_option(boost::asio::ip::tcp::no_delay(true));\r
 335 \r
 336                 // バッファサイズを変更 1MiB\r
 337                 boost::asio::socket_base::receive_buffer_size option(1048576);\r
 338                 socket_tcp_.set_option(option);\r
 339 \r
 340         // IPアドレスを取得\r
 341         global_ip_ = socket_tcp_.remote_endpoint().address().to_string();\r
 342 \r
 343         boost::asio::async_read_until(socket_tcp_,\r
 344             receive_buf_, NETWORK_UTILS_DELIMITOR,\r
 345             boost::bind(\r
 346               &ServerSession::ReceiveTCP, shared_from_this(),\r
 347               boost::asio::placeholders::error));\r
 348     }\r
 349 }\r