src/IpcServer.cpp

   1 //
   2 // Open Service Platform
   3 // Copyright (c) 2012 Samsung Electronics Co., Ltd.
   4 //
   5 // Licensed under the Apache License, Version 2.0 (the License);
   6 // you may not use this file except in compliance with the License.
   7 // You may obtain a copy of the License at
   8 //
   9 //     http://www.apache.org/licenses/LICENSE-2.0
  10 //
  11 // Unless required by applicable law or agreed to in writing, software
  12 // distributed under the License is distributed on an "AS IS" BASIS,
  13 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14 // See the License for the specific language governing permissions and
  15 // limitations under the License.
  16 //
  17
  18 /**
  19  * @file  FIo_IpcServer.cpp
  20  * @brief This is the implementation file for the IpcServer class.
  21  *
  22  */
  23
  24 #include <cstdio>
  25 #include <cstdlib>
  26 #include <cstring>
  27 #include <cerrno>
  28 #include <iostream>
  29 #include <new>
  30
  31 #include <unistd.h>
  32 #include <sys/types.h>
  33 #include <sys/socket.h>
  34 #include <sys/stat.h>
  35 #include <sys/un.h>
  36
  37 #include <sys/smack.h>
  38
  39 #include <ipc/ipc_message.h>
  40
  41 #include <FBaseRtMutex.h>
  42 #include <FBaseSysLog.h>
  43 #include <FBase_StringConverter.h>
  44 #include <FBaseRt_EventDispatcher.h>
  45
  46 #include "IIpcServerEventListener.h"
  47 #include "IpcServer.h"
  48
  49 using namespace std;
  50 using namespace IPC;
  51
  52 using namespace Tizen::Base;
  53 using namespace Tizen::Base::Runtime;
  54 using namespace Tizen::App;
  55
  56 IpcServer::_ChannelInfo::_ChannelInfo(void)
  57         : pClientInfo(null)
  58         , pGIOChannel(null)
  59         , pGSource(null)
  60         , destroySource(true)
  61 {
  62
  63 }
  64
  65 IpcServer::_ChannelInfo::~_ChannelInfo(void)
  66 {
  67         if (pGIOChannel != null)
  68         {
  69                 g_io_channel_unref(pGIOChannel);
  70         }
  71
  72         if (pGSource != null)
  73         {
  74                 if (destroySource)
  75                 {
  76                         g_source_destroy(pGSource);
  77                 }
  78
  79                 g_source_unref(pGSource);
  80         }
  81 }
  82
  83 IpcServer::_ClientInfo::_ClientInfo(void)
  84         : clientId(-1)
  85         , pIpcServer(null)
  86         , pReverseChannel(null)
  87 {
  88
  89 }
  90
  91 IpcServer::_ClientInfo::~_ClientInfo(void)
  92 {
  93         if (pReverseChannel != null)
  94         {
  95                 g_io_channel_unref(pReverseChannel);
  96         }
  97
  98         channels.clear();
  99 }
 100
 101 IpcServer::IpcServer(void)
 102         : __runOnCallerThread(false)
 103         , __pEventDispatcher(null)
 104         , __pListener(null)
 105         , __handlerThread(0)
 106         , __pHandlerGMainContext(null)
 107         , __pHandlerGMainLoop(null)
 108         , __pConnectGSource(null)
 109         , __pCurrentChannel(null)
 110         , __pCurrentClientInfo(null)
 111 {
 112         __messageBuffer[0] = '\0';
 113 }
 114
 115
 116 IpcServer::~IpcServer(void)
 117 {
 118         if (__pConnectGSource != null)
 119         {
 120                 g_source_destroy(__pConnectGSource);
 121                 g_source_unref(__pConnectGSource);
 122                 __pConnectGSource = null;
 123         }
 124
 125         if (!__runOnCallerThread)
 126         {
 127                 if (__pEventDispatcher)
 128                 {
 129                         delete __pEventDispatcher;
 130                         __pEventDispatcher = null;
 131                 }
 132
 133                 if (__pHandlerGMainLoop)
 134                 {
 135                         g_main_loop_unref(__pHandlerGMainLoop);
 136                         __pHandlerGMainLoop = null;
 137                 }
 138
 139                 if (__pHandlerGMainContext)
 140                 {
 141                         g_main_context_unref(__pHandlerGMainContext);
 142                         __pHandlerGMainContext = null;
 143                 }
 144         }
 145
 146         // clean-up clients
 147         __clients.clear();
 148 }
 149
 150 result
 151 IpcServer::Construct(const String& name, const IIpcServerEventListener& listener, bool runOnCallerThread)
 152 {
 153         result r = E_SUCCESS;
 154
 155         GIOChannel* pGIOChannel = null;
 156         GSource* pGSource = null;
 157
 158         struct sockaddr_un serverAddress;
 159         int serverSocket = -1;
 160         int serverLen = 0;
 161         int ret = 0;
 162         std::string socketName;
 163         char* pName = null;
 164         size_t socketNameLength = 0;
 165
 166         __name = name;
 167         __pListener = const_cast <IIpcServerEventListener*>(&listener);
 168         __runOnCallerThread = runOnCallerThread;
 169
 170         pName = _StringConverter::CopyToCharArrayN(name);
 171         SysTryReturnResult(NID_IO, pName != null, E_OUT_OF_MEMORY, "Not enough memory");
 172
 173         socketName.append("/tmp/");
 174         socketName.append(pName);
 175
 176         delete[] pName;
 177
 178         socketNameLength = socketName.size() + 1;
 179         SysTryReturnResult(NID_IO, socketNameLength < 108, E_INVALID_ARG, "Server name is too long");
 180
 181         if (!__runOnCallerThread)
 182         {
 183                 __pHandlerGMainContext = g_main_context_new();
 184                 __pHandlerGMainLoop = g_main_loop_new(__pHandlerGMainContext, FALSE);
 185
 186         }
 187         else
 188         {
 189                 __pHandlerGMainContext = g_main_context_get_thread_default();
 190                 if (__pHandlerGMainContext == null) // is global?
 191                 {
 192                         __pHandlerGMainContext = g_main_context_default();
 193                         if (__pHandlerGMainContext == null)
 194                         {
 195                                 return E_SYSTEM;
 196                         }
 197                 }
 198         }
 199
 200         ret = unlink(socketName.c_str());
 201         SysTryLog(NID_IO, ret == 0, "Unlink a socket has failed.. but it is not a problem.");
 202
 203         serverSocket = socket(AF_UNIX, SOCK_STREAM, 0);
 204         SysTryReturnResult(NID_IO, serverSocket != -1, E_SYSTEM, "Failed to create a socket.");
 205
 206         // SMACK (Add a * label to socket)
 207         if(smack_fsetlabel(serverSocket, "@", SMACK_LABEL_IPOUT) != 0)
 208         {
 209                 SysTryCatch(NID_IO, errno == EOPNOTSUPP, r = E_SYSTEM, E_SYSTEM, "[E_SYSTEM] SMACK labeling failed");
 210                 SysLog(NID_IO, "Kernel doesn't have Smack.");
 211         }
 212
 213         if(smack_fsetlabel(serverSocket, "*", SMACK_LABEL_IPIN) != 0)
 214         {
 215                 SysTryCatch(NID_IO, errno == EOPNOTSUPP, r = E_SYSTEM, E_SYSTEM, "[E_SYSTEM] SMACK labeling failed");
 216                 SysLog(NID_IO, "Kernel doesn't have Smack.");
 217         }
 218
 219         bzero(&serverAddress, sizeof(serverAddress));
 220         serverAddress.sun_family = AF_UNIX;
 221         strncpy(serverAddress.sun_path, socketName.c_str(), socketNameLength);
 222         serverLen = sizeof(serverAddress);
 223
 224         ret = bind(serverSocket, (const struct sockaddr*) &serverAddress, serverLen);
 225         SysTryCatch(NID_IO, ret != -1, r = E_SYSTEM, E_SYSTEM, "[E_SYSTEM] Failed to bind a socket(%d, %s): %s", serverSocket,
 226                            socketName.c_str(), strerror(errno));
 227
 228         ret = chmod(socketName.c_str(), 0666);
 229         SysTryCatch(NID_IO, ret == 0, r = E_SYSTEM, E_SYSTEM, "[E_SYSTEM] Failed to change permission of a socket(%d, %s): %s", serverSocket,
 230                            socketName.c_str(), strerror(errno));
 231
 232         ret = listen(serverSocket, 15);
 233         SysTryCatch(NID_IO, ret == 0, r = E_SYSTEM, E_SYSTEM, "[E_SYSTEM] Failed to listen a socket(%d, %s): %s", serverSocket,
 234                            socketName.c_str(), strerror(errno));
 235
 236         pGIOChannel = g_io_channel_unix_new(serverSocket);
 237         SysTryCatch(NID_IO, pGIOChannel != null, , E_OUT_OF_MEMORY, "[E_OUT_OF_MEMORY] Not enough memory.");
 238
 239         // socket will be closed when pGIOChannel is deleted.
 240         g_io_channel_set_close_on_unref(pGIOChannel, TRUE);
 241         serverSocket = -1;
 242
 243         pGSource = g_io_create_watch(pGIOChannel, (GIOCondition) (G_IO_IN | G_IO_ERR | G_IO_NVAL | G_IO_HUP));
 244         SysTryCatch(NID_IO, pGSource != null, r = E_OUT_OF_MEMORY, E_OUT_OF_MEMORY,
 245                            "[E_OUT_OF_MEMORY] Failed to create watch for socket.");
 246
 247         // channel will be delete when pGSource is deleted.
 248         g_io_channel_unref(pGIOChannel);
 249         pGIOChannel = null;
 250
 251         g_source_set_callback(pGSource, (GSourceFunc) OnConnectionRequest, this, NULL);
 252         g_source_attach(pGSource, __pHandlerGMainContext);
 253
 254         if (__runOnCallerThread)
 255         {
 256                 __pListener->OnIpcServerStarted(*this);
 257         }
 258         else
 259         {
 260                 ret = pthread_create(&__handlerThread, null, &ThreadProc, (void*) this);
 261                 SysTryCatch(NID_IO, ret == 0, r = E_SYSTEM, E_SYSTEM, "[E_SYSTEM] Failed to an IPC thread");
 262         }
 263
 264         __pConnectGSource = pGSource;
 265
 266         return E_SUCCESS;
 267
 268 CATCH:
 269         if (pGIOChannel != null)
 270         {
 271                 g_io_channel_unref(pGIOChannel);
 272         }
 273
 274         if (serverSocket != -1)
 275         {
 276                 close(serverSocket);
 277         }
 278
 279         if (runOnCallerThread && __pHandlerGMainContext)
 280         {
 281                 g_main_context_unref(__pHandlerGMainContext);
 282                 __pHandlerGMainContext = null;
 283         }
 284
 285         return r;
 286 }
 287
 288 struct HelloMessage
 289 {
 290         int pid;
 291         bool reverse;  // true if the connection is for reverse message
 292         char appId[256];
 293 };
 294
 295 gboolean
 296 IpcServer::OnConnectionRequest(GIOChannel* source, GIOCondition condition, gpointer data)
 297 {
 298         IpcServer* pIpcServer = (IpcServer*) data;
 299         GError* pGError = null;
 300         HelloMessage helloMessage;
 301         _ClientInfo* pClientInfo = null;
 302         _ChannelInfo* pChannelInfo = null;
 303         GSource* pGSource = null;
 304         GIOChannel* pChannel = null;
 305
 306         int server = -1;
 307         int client = -1;
 308         struct sockaddr_un clientAddress;
 309         socklen_t clientLen = sizeof(clientAddress);
 310
 311         SysAssertf(pIpcServer != null, "Not yet constructed. Construct() should be called before use.\n");
 312         SysAssertf(pIpcServer->__pListener != null, "Listener is null.\n");
 313
 314         server = g_io_channel_unix_get_fd(source);
 315
 316         client = accept(server, (struct sockaddr*) &clientAddress, &clientLen);
 317         SysTryCatch(NID_IO, client != -1, , E_SYSTEM, "[E_SYSTEM] Accept failed.");
 318
 319         read(client, &helloMessage, sizeof(helloMessage));
 320         helloMessage.appId[255] = '\0';
 321
 322         pChannel = g_io_channel_unix_new(client);
 323         SysTryCatch(NID_IO, pChannel != null, , E_OUT_OF_MEMORY, "[E_OUT_OF_MEMORY] Not enough memory.");
 324
 325         g_io_channel_set_encoding(pChannel, NULL, &pGError);
 326         g_io_channel_set_flags(pChannel, G_IO_FLAG_NONBLOCK, &pGError);
 327
 328         g_io_channel_set_close_on_unref(pChannel, TRUE);
 329         client = -1;
 330
 331         pClientInfo = pIpcServer->__clients[helloMessage.pid];
 332         if (pClientInfo == null) // first connection request from this client
 333         {
 334                 pClientInfo = new (std::nothrow) _ClientInfo;
 335                 SysTryCatch(NID_IO, pClientInfo != null, , E_OUT_OF_MEMORY, "[E_OUT_OF_MEMORY] Not enough memory.");
 336
 337                 pClientInfo->pIpcServer = pIpcServer;
 338                 pClientInfo->clientId = helloMessage.pid;
 339                 pClientInfo->appId.Append((wchar_t*) helloMessage.appId);
 340                 pClientInfo->pReverseChannel = null;
 341
 342                 pIpcServer->__clients[helloMessage.pid] = pClientInfo;
 343
 344                 pIpcServer->__pCurrentClientInfo = pClientInfo;
 345                 pIpcServer->__pListener->OnIpcClientConnected(*pIpcServer, helloMessage.pid);
 346                 pIpcServer->__pCurrentClientInfo = null;
 347         }
 348
 349         if (helloMessage.reverse)
 350         {
 351                 pClientInfo->pReverseChannel = pChannel;
 352         }
 353         else
 354         {
 355                 pChannelInfo = new (std::nothrow) _ChannelInfo;
 356                 SysTryCatch(NID_IO, pChannelInfo != null, , E_OUT_OF_MEMORY, "[E_OUT_OF_MEMORY] Not enough memory.");
 357
 358                 pGSource = g_io_create_watch(pChannel, (GIOCondition) (G_IO_IN | G_IO_ERR | G_IO_NVAL | G_IO_HUP));
 359                 g_source_set_callback(pGSource, (GSourceFunc) OnReadMessage, pChannelInfo, NULL);
 360                 g_source_attach(pGSource, pIpcServer->__pHandlerGMainContext);
 361
 362                 pChannelInfo->pClientInfo = pClientInfo;
 363                 pChannelInfo->pGIOChannel = pChannel;
 364                 pChannelInfo->pGSource = pGSource;
 365
 366                 pClientInfo->channels.push_back(pChannelInfo);
 367         }
 368
 369         return true;
 370
 371 CATCH:
 372         if (pChannel != null)
 373         {
 374                 g_io_channel_unref(pChannel);
 375         }
 376
 377         if (client != -1)
 378         {
 379                 close(client);
 380         }
 381
 382         return true;
 383 }
 384
 385 int
 386 IpcServer::GetClientId(void) const
 387 {
 388         if (__pCurrentClientInfo)
 389         {
 390                 return __pCurrentClientInfo->clientId;
 391         }
 392
 393         return -1;
 394 }
 395
 396 AppId
 397 IpcServer::GetClientApplicationId(void) const
 398 {
 399         static String nullString;
 400
 401         if (__pCurrentClientInfo)
 402         {
 403                 return __pCurrentClientInfo->appId;
 404         }
 405
 406         return nullString;
 407 }
 408
 409 gboolean
 410 IpcServer::HandleReceivedMessage(GIOChannel* source, GIOCondition condition, gpointer data)
 411 {
 412         GError* pGError = NULL;
 413         GIOStatus status;
 414         IPC::Message* pMessage = NULL;
 415         _ChannelInfo* pChannelInfo = (_ChannelInfo*) data;
 416         _ClientInfo* pClientInfo = pChannelInfo->pClientInfo;
 417
 418         if (condition & G_IO_HUP)
 419         {
 420                 SysLog(NID_IO, "Connection closed");
 421                 int clientId = pClientInfo->clientId;
 422
 423                 g_io_channel_shutdown(source, FALSE, &pGError);
 424
 425                 for (unsigned int i = 0; i < pClientInfo->channels.size(); i++)
 426                 {
 427                         if (pChannelInfo == pClientInfo->channels[i])
 428                         {
 429                                 pClientInfo->channels.erase(pClientInfo->channels.begin() + i);
 430
 431                                 // Do not destroy a source in a dispatch callback
 432                                 // because main loop will do it if the callback return FALSE.
 433                                 pChannelInfo->destroySource = false;
 434                                 delete pChannelInfo;
 435
 436                                 break;
 437                         }
 438                 }
 439
 440                 if (pClientInfo->channels.size() == 0)
 441                 {
 442                         SysLog(NID_IO, "All connections of client(%d) are closed. delete client info", clientId);
 443
 444                         __pListener->OnIpcClientDisconnected(*this, clientId);
 445
 446                         __clients[clientId] = null;
 447
 448                         delete pClientInfo;
 449                 }
 450
 451                 return FALSE;
 452         }
 453         else if (condition & G_IO_IN)
 454         {
 455                 gsize readSize = 0;
 456                 const char* pStart = NULL;
 457                 const char* pEnd = NULL;
 458                 const char* pEndOfMessage = NULL;
 459
 460                 while (true)
 461                 {
 462                         pGError = null;
 463                         status = g_io_channel_read_chars(source, (char*) __messageBuffer, __MAX_MESSAGE_BUFFER_SIZE, &readSize, &pGError);
 464                         if (status != G_IO_STATUS_NORMAL)
 465                         {
 466                                 if (status == G_IO_STATUS_EOF || status == G_IO_STATUS_ERROR)
 467                                 {
 468                                         if (status == G_IO_STATUS_EOF)
 469                                         {
 470                                                 SysLog(NID_IO, "G_IO_STATUS_EOF, the connection is closed.");
 471                                         }
 472                                         else
 473                                         {
 474                                                 SysLog(NID_IO, "G_IO_STATUS_ERROR, the connection is closed. ");
 475                                         }
 476
 477                                         pGError = null;
 478                                         g_io_channel_shutdown(source, FALSE, &pGError);
 479
 480                                         int clientId = pClientInfo->clientId;
 481
 482                                         for (unsigned int i = 0; i < pClientInfo->channels.size(); i++)
 483                                         {
 484                                                 if (pChannelInfo == pClientInfo->channels[i])
 485                                                 {
 486                                                         pClientInfo->channels.erase(pClientInfo->channels.begin() + i);
 487
 488                                                         pChannelInfo->destroySource = false;
 489                                                         delete pChannelInfo;
 490                                                         break;
 491                                                 }
 492                                         }
 493
 494                                         if (pClientInfo->channels.size() == 0)
 495                                         {
 496                                                 SysLog(NID_IO, "All connections of client(%d) are closed normally by the client.", clientId);
 497
 498                                                 if (__pListener)
 499                                                 {
 500                                                         __pListener->OnIpcClientDisconnected(*this, clientId);
 501                                                 }
 502
 503                                                 __clients[clientId] = null;
 504
 505                                                 delete pClientInfo;
 506                                         }
 507
 508                                         return FALSE;
 509                                 }
 510                         }
 511
 512                         if (readSize == 0)
 513                         {
 514                                 break;
 515                         }
 516
 517                         if (__pending.empty())
 518                         {
 519                                 pStart = __messageBuffer;
 520                                 pEnd = pStart + readSize;
 521                         }
 522                         else
 523                         {
 524                                 __pending.append(__messageBuffer, readSize);
 525                                 pStart = __pending.data();
 526                                 pEnd = pStart + __pending.size();
 527                         }
 528
 529                         while (true)
 530                         {
 531                                 pEndOfMessage = IPC::Message::FindNext(pStart, pEnd);
 532                                 if (pEndOfMessage == NULL)
 533                                 {
 534                                         __pending.assign(pStart, pEnd - pStart);
 535                                         break;
 536                                 }
 537
 538                                 pMessage = new (std::nothrow) IPC::Message(pStart, pEndOfMessage - pStart);
 539                                 SysTryReturn(NID_IO, pMessage != null, FALSE, E_OUT_OF_MEMORY, "[E_OUT_OF_MEMORY] The memory is insufficient.");
 540
 541                                 __pCurrentChannel = source;
 542
 543                                 if (__pListener)
 544                                 {
 545                                         __pListener->OnIpcRequestReceived(*this, *pMessage);
 546                                 }
 547
 548                                 delete pMessage;
 549
 550                                 __pCurrentChannel = NULL;
 551
 552                                 pStart = pEndOfMessage;
 553                         }
 554                 }
 555         }
 556         else
 557         {
 558                 // empty statement
 559         }
 560
 561         return TRUE;
 562 }
 563
 564 gboolean
 565 IpcServer::OnReadMessage(GIOChannel* source, GIOCondition condition, gpointer data)
 566 {
 567         gboolean ret = FALSE;
 568         _ChannelInfo* pChannelInfo = (_ChannelInfo*) data;
 569         _ClientInfo* pClientInfo = pChannelInfo->pClientInfo;
 570         IpcServer* pIpcServer = (IpcServer*) pClientInfo->pIpcServer;
 571
 572         pIpcServer->__pCurrentClientInfo = pClientInfo;
 573         ret = pIpcServer->HandleReceivedMessage(source, condition, data);
 574         pIpcServer->__pCurrentClientInfo = null;
 575
 576         return ret;
 577 }
 578
 579 void*
 580 IpcServer::ThreadProc(void* pParam)
 581 {
 582         IpcServer* pIpcServer = (IpcServer*) pParam;
 583         if (pIpcServer != NULL)
 584         {
 585                 pIpcServer->Run(NULL);
 586         }
 587
 588         return NULL;
 589 }
 590
 591 void
 592 IpcServer::Run(void* pParam)
 593 {
 594         result r = E_SUCCESS;
 595
 596         if (__pListener == null)
 597         {
 598                 return;
 599         }
 600
 601         __pEventDispatcher = new (std::nothrow) _EventDispatcher;
 602         SysTryReturnVoidResult(NID_IO, __pEventDispatcher != null, E_OUT_OF_MEMORY, "[E_OUT_OF_MEMORY] The memory is insufficient.");
 603
 604         r = __pEventDispatcher->Construct(__pHandlerGMainContext);
 605         if (IsFailed(r))
 606         {
 607                 delete __pEventDispatcher;
 608                 __pEventDispatcher = null;
 609         }
 610
 611         __pListener->OnIpcServerStarted(*this);
 612
 613         g_main_loop_run(__pHandlerGMainLoop);
 614
 615         __pListener->OnIpcServerStopped(*this);
 616 }
 617
 618 result
 619 IpcServer::Start(void)
 620 {
 621         return E_SUCCESS;
 622 }
 623
 624 String
 625 IpcServer::GetName(void) const
 626 {
 627         return __name;
 628 }
 629
 630 result
 631 IpcServer::Stop(void)
 632 {
 633         result r = E_SUCCESS;
 634         int ret = 0;
 635
 636         SysTryReturnResult(NID_IO, __pListener != null, E_SYSTEM, "Listener is null.");
 637
 638         if (!__runOnCallerThread)
 639         {
 640                 pthread_t self = pthread_self();
 641
 642                 if (__pHandlerGMainLoop)
 643                 {
 644                         g_main_loop_quit(__pHandlerGMainLoop);
 645                 }
 646
 647                 if (__handlerThread != self)
 648                 {
 649                         ret = pthread_join(__handlerThread, null);
 650                         SysTryLog(NID_IO, ret == 0, "Join an IPC thread returns an error");
 651                 }
 652         }
 653         else
 654         {
 655                 __pListener->OnIpcServerStopped(*this);
 656         }
 657
 658         return r;
 659 }
 660
 661 bool
 662 IpcServer::Send(IPC::Message* msg)
 663 {
 664         gsize remain = 0;
 665         gsize written = 0;
 666         char* pData = NULL;
 667         GError* pGError = NULL;
 668
 669
 670         pData = (char*) msg->data();
 671         remain = msg->size();
 672
 673         if (msg->is_reply())
 674         {
 675                 while (remain > 0)
 676                 {
 677                         pGError = NULL;
 678                         g_io_channel_write_chars(__pCurrentChannel, (char*) pData, remain, &written, &pGError);
 679
 680                         remain -= written;
 681                         pData += written;
 682                 }
 683
 684                 g_io_channel_flush(__pCurrentChannel, &pGError);
 685         }
 686         else
 687         {
 688                 // empty statement;
 689         }
 690
 691         return true;
 692 }
 693
 694 result
 695 IpcServer::SendResponse(int client, IPC::Message* pMessage)
 696 {
 697         result r = E_SUCCESS;
 698         gsize remain = 0;
 699         gsize written = 0;
 700         char* pData = null;
 701         GError* pGError = null;
 702         _ClientInfo* pClientInfo = null;
 703
 704         SysTryReturn(NID_IO, client >= 0 && pMessage != null, false, E_INVALID_ARG,
 705                                 "[E_INVALID_ARG] pMessage(0x%x) is null or clinet(%d) < 0", pMessage,
 706                                 client);
 707         SysTryCatch(NID_IO, !pMessage->is_sync(), r = E_INVALID_ARG, E_INVALID_ARG, "[E_INVALID_ARG] Can't send sync. messagee.");
 708
 709         pClientInfo = __clients[client];
 710         SysTryCatch(NID_IO, pClientInfo != null, r = E_INVALID_ARG, E_INVALID_ARG,
 711                            "[E_INVALID_ARG] client(%d) has not been registered.",
 712                            client);
 713
 714         pData = (char*) pMessage->data();
 715         remain = pMessage->size();
 716
 717         while (remain > 0)
 718         {
 719                 pGError = NULL;
 720                 g_io_channel_write_chars(pClientInfo->pReverseChannel, (char*) pData, remain, &written, &pGError);
 721                 SysTryCatch(NID_IO, pGError == null, , E_SYSTEM, "[E_SYSTEM] Error occurred during writing message to socket.");
 722
 723                 remain -= written;
 724                 pData += written;
 725         }
 726
 727         g_io_channel_flush(pClientInfo->pReverseChannel, &pGError);
 728
 729         delete pMessage;
 730
 731         return E_SUCCESS;
 732
 733 CATCH:
 734         delete pMessage;
 735         return r;
 736 }
 737
 738 result
 739 IpcServer::SendResponse(int client, const IPC::Message& message)
 740 {
 741         result r = E_SUCCESS;
 742         gsize remain = 0;
 743         gsize written = 0;
 744         char* pData = null;
 745         GError* pGError = null;
 746         _ClientInfo* pClientInfo = null;
 747
 748         SysTryReturn(NID_IO, client >= 0, false, E_INVALID_ARG, "[E_INVALID_ARG] clinet(%d) < 0", client);
 749         SysTryCatch(NID_IO, !message.is_sync(), r = E_INVALID_ARG, E_INVALID_ARG, "[E_INVALID_ARG] Can't send sync. messagee.");
 750
 751         pClientInfo = __clients[client];
 752         SysTryCatch(NID_IO, pClientInfo != null, r = E_INVALID_ARG, E_INVALID_ARG,
 753                            "[E_INVALID_ARG] client(%d) has not been registered.",
 754                            client);
 755
 756         pData = (char*) message.data();
 757         remain = message.size();
 758
 759         while (remain > 0)
 760         {
 761                 pGError = NULL;
 762                 g_io_channel_write_chars(pClientInfo->pReverseChannel, (char*) pData, remain, &written, &pGError);
 763                 SysTryCatch(NID_IO, pGError == null, , E_SYSTEM, "[E_SYSTEM] Error occurred during writing message to socket.");
 764
 765                 remain -= written;
 766                 pData += written;
 767         }
 768
 769         g_io_channel_flush(pClientInfo->pReverseChannel, &pGError);
 770
 771         return E_SUCCESS;
 772
 773 CATCH:
 774         return r;
 775 }