resource/csdk/connectivity/src/ip_adapter/caipserver.c

   1 /******************************************************************
   2  *
   3  * Copyright 2014 Samsung Electronics All Rights Reserved.
   4  *
   5  *
   6  *
   7  * Licensed under the Apache License, Version 2.0 (the "License");
   8  * you may not use this file except in compliance with the License.
   9  * You may obtain a copy of the License at
  10  *
  11  *      http://www.apache.org/licenses/LICENSE-2.0
  12  *
  13  * Unless required by applicable law or agreed to in writing, software
  14  * distributed under the License is distributed on an "AS IS" BASIS,
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  16  * See the License for the specific language governing permissions and
  17  * limitations under the License.
  18  *
  19  ******************************************************************/
  20
  21 #include "caipinterface.h"
  22
  23 #include <sys/types.h>
  24 #include <sys/socket.h>
  25 #include <unistd.h>
  26 #include <fcntl.h>
  27 #include <sys/select.h>
  28 #include <arpa/inet.h>
  29 #include <netinet/in.h>
  30 #include <errno.h>
  31
  32 #include "pdu.h"
  33 #include "caadapterutils.h"
  34 #ifdef __WITH_DTLS__
  35 #include "caadapternetdtls.h"
  36 #endif
  37 #include "camutex.h"
  38 #include "oic_malloc.h"
  39 #include "oic_string.h"
  40
  41 /**
  42  * @def IP_SERVER_TAG
  43  * @brief Logging tag for module name
  44  */
  45 #define IP_SERVER_TAG "IP_SERVER"
  46
  47 /**
  48  * @def CA_UDP_BIND_RETRY_COUNT
  49  * @brief Retry count in case of socket bind failure.
  50  */
  51 #define CA_UDP_BIND_RETRY_COUNT 10
  52
  53 /**
  54  * @def IPNAMESIZE
  55  * @brief Max length for ip address.
  56  */
  57 #define IPNAMESIZE 16
  58
  59 /**
  60  * @def SOCKETOPTION
  61  * @brief Socket option.
  62  */
  63 #define SOCKETOPTION 1
  64
  65 /**
  66  * @var g_packetHandlerStopFlag
  67  * @brief Flag for stopping packet handler thread.
  68  */
  69 static bool g_packetHandlerStopFlag = false;
  70
  71 /**
  72  * @var CAAdapterIPServerContext_t
  73  * @brief Thread context information for callbacks and threadpool.
  74  */
  75 typedef struct
  76 {
  77     ca_thread_pool_t threadPool;
  78     CAIPPacketReceivedCallback packetReceivedCallback;
  79     CAIPExceptionCallback exceptionCallback;
  80     CAIPErrorHandleCallback IPErrorCallback;
  81 } CAAdapterIPServerContext_t;
  82
  83 /**
  84  * @var g_serverInfoList
  85  * @brief Mutex to synchronize ethenet adapter context.
  86  */
  87 static u_arraylist_t *g_serverInfoList = NULL;
  88
  89 /**
  90  * @var g_mutexServerInfoList
  91  * @brief Mutex to synchronize Server Information.
  92  */
  93 static ca_mutex g_mutexServerInfoList = NULL;
  94
  95 /**
  96  * @var g_adapterIPServerContext
  97  * @brief Mutex to synchronize ethenet adapter context.
  98  */
  99 static CAAdapterIPServerContext_t *g_adapterIPServerContext = NULL;
 100
 101 /**
 102  * @var g_mutexAdapterServerContext
 103  * @brief Mutex to synchronize unicast server
 104  */
 105 static ca_mutex g_mutexAdapterServerContext = NULL;
 106
 107 static void CAReceiveHandler(void *data)
 108 {
 109     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 110
 111     fd_set readFds;
 112     int maxSd = 0;
 113     struct timeval timeout;
 114     char recvBuffer[COAP_MAX_PDU_SIZE] = { 0 };
 115
 116     while (true != g_packetHandlerStopFlag)
 117     {
 118         timeout.tv_sec = 1;
 119         timeout.tv_usec = 0;
 120         FD_ZERO(&readFds);
 121
 122         ca_mutex_lock(g_mutexServerInfoList);
 123         uint32_t listIndex = 0;
 124         uint32_t listLength = u_arraylist_length(g_serverInfoList);
 125
 126         u_arraylist_t *tempServerInfoList = u_arraylist_create();
 127         if (!tempServerInfoList)
 128         {
 129             OIC_LOG(ERROR, IP_SERVER_TAG, "u_arraylist_create failed");
 130             ca_mutex_unlock(g_mutexServerInfoList);
 131             return;
 132         }
 133
 134         for (listIndex = 0; listIndex < listLength; listIndex++)
 135         {
 136             CAServerInfo_t *info = (CAServerInfo_t *) u_arraylist_get(g_serverInfoList, listIndex);
 137             if (!info)
 138             {
 139                 listIndex++;
 140                 continue;
 141             }
 142
 143             int sd = info->socketFd;
 144             //if valid socket descriptor then add to read list
 145             if (sd > 0)
 146             {
 147                 FD_SET(sd, &readFds);
 148             }
 149
 150             //highest file descriptor number, need it for the select function
 151             if (sd > maxSd)
 152             {
 153                 maxSd = sd;
 154             }
 155
 156             CAServerInfo_t *newInfo = (CAServerInfo_t *) OICMalloc(sizeof(CAServerInfo_t));
 157             if (!newInfo)
 158             {
 159                 OIC_LOG(ERROR, IP_SERVER_TAG, "Malloc failed");
 160                 CAClearServerInfoList(tempServerInfoList);
 161                 ca_mutex_unlock(g_mutexServerInfoList);
 162                 return;
 163             }
 164
 165             *newInfo = *info;
 166
 167             CAResult_t result = u_arraylist_add(tempServerInfoList, (void *) newInfo);
 168             if (CA_STATUS_OK != result)
 169             {
 170                 OIC_LOG(ERROR, IP_SERVER_TAG, "u_arraylist_add failed!Thread exit");
 171                 CAClearServerInfoList(tempServerInfoList);
 172                 ca_mutex_unlock(g_mutexServerInfoList);
 173                 return;
 174             }
 175         }
 176
 177         ca_mutex_unlock(g_mutexServerInfoList);
 178
 179         int ret = select(maxSd + 1, &readFds, NULL, NULL, &timeout);
 180         if (g_packetHandlerStopFlag)
 181         {
 182             OIC_LOG_V(DEBUG, IP_SERVER_TAG,
 183                       "Packet receiver handler Stop request received. Thread exited");
 184             CAClearServerInfoList(tempServerInfoList);
 185             break;
 186         }
 187         if (ret < 0)
 188         {
 189             OIC_LOG_V(FATAL, IP_SERVER_TAG, "select returned error %s", strerror(errno));
 190             CAClearServerInfoList(tempServerInfoList);
 191             continue;
 192         }
 193
 194         listLength = u_arraylist_length(tempServerInfoList);
 195         for (listIndex = 0; listIndex < listLength; listIndex++)
 196         {
 197             CAServerInfo_t *info = (CAServerInfo_t *) u_arraylist_get(tempServerInfoList,
 198                                                                       listIndex);
 199             if (!info)
 200             {
 201                 continue;
 202             }
 203
 204             int sd = info->socketFd;
 205             if (FD_ISSET(sd , &readFds))
 206             {
 207                 OIC_LOG_V(ERROR, IP_SERVER_TAG,
 208                           "data Received server information ip %s, port %d socket %d",
 209                           info->endpoint.addr, info->endpoint.port, sd);
 210                 memset(recvBuffer, 0, sizeof(recvBuffer));
 211
 212                 struct sockaddr_in srcSockAddress = { 0 };
 213                 socklen_t srcAddressLen = sizeof(srcSockAddress);
 214
 215                 //Reading from socket
 216                 ssize_t recvLen = recvfrom(sd, recvBuffer, sizeof(recvBuffer), 0,
 217                                            (struct sockaddr *) &srcSockAddress, &srcAddressLen);
 218                 if (-1 == recvLen)
 219                 {
 220                     OIC_LOG_V(ERROR, IP_SERVER_TAG, "Recvfrom failed %s", strerror(errno));
 221                     continue;
 222                 }
 223                 else if (0 == recvLen)
 224                 {
 225                     OIC_LOG_V(ERROR, IP_SERVER_TAG, "Server socket shutdown sock fd[%d]", sd);
 226                     ca_mutex_lock(g_mutexAdapterServerContext);
 227                     // Notify upper layer this exception
 228                     if (g_adapterIPServerContext->exceptionCallback)
 229                     {
 230                         // need to make proper exception callback.
 231                         //g_adapterIPServerContext->exceptionCallback(ctx->type);
 232                     }
 233                     ca_mutex_unlock(g_mutexAdapterServerContext);
 234                 }
 235
 236                 char srcIPAddress[CA_IPADDR_SIZE] = { 0 };
 237                 if (!inet_ntop(AF_INET, &srcSockAddress.sin_addr.s_addr, srcIPAddress,
 238                                sizeof(srcIPAddress)))
 239                 {
 240
 241                     OIC_LOG(ERROR, IP_SERVER_TAG, "inet_ntop is failed!");
 242                     continue;
 243                 }
 244
 245                 uint16_t srcPort = ntohs(srcSockAddress.sin_port);
 246
 247                 OIC_LOG_V(DEBUG, IP_SERVER_TAG, "Received packet from %s:%d len %d",
 248                           srcIPAddress, srcPort, recvLen);
 249
 250                 char *netMask = NULL;
 251                 if (CA_STATUS_OK != CAIPGetInterfaceSubnetMask(info->ifAddr, &netMask))
 252                 {
 253                     OIC_LOG(ERROR, IP_SERVER_TAG, "Failed to get IP subnet");
 254                     continue;
 255                 }
 256
 257                 if (!CAAdapterIsSameSubnet(info->ifAddr, srcIPAddress, netMask))
 258                 {
 259                     OIC_LOG(DEBUG, IP_SERVER_TAG,
 260                             "Packet received from different subnet, Ignore!");
 261                     OICFree(netMask);
 262                     continue;
 263                 }
 264                 OICFree(netMask);
 265
 266                 CAEndpoint_t ep;
 267                 strncpy(ep.addr, srcIPAddress, MAX_ADDR_STR_SIZE_CA);
 268                 ep.port = srcPort;
 269                 ep.flags = CA_IPV4;
 270                 ep.adapter = CA_ADAPTER_IP;
 271
 272                 if (info->endpoint.flags & CA_SECURE)
 273                 {
 274 #ifdef __WITH_DTLS__
 275                     ep.flags |= CA_SECURE;
 276                     (void)CAAdapterNetDtlsDecrypt(&ep, (uint8_t *)recvBuffer, recvLen);
 277                     OIC_LOG_V(DEBUG, IP_SERVER_TAG,
 278                               "CAAdapterNetDtlsDecrypt returns [%d]", ret);
 279 #endif
 280                 }
 281                 else //both multicast and unicast
 282                 {
 283                     ca_mutex_lock(g_mutexAdapterServerContext);
 284
 285                     if (g_adapterIPServerContext->packetReceivedCallback)
 286                     {
 287                         g_adapterIPServerContext->packetReceivedCallback(&ep,
 288                                                           recvBuffer, recvLen);
 289                     }
 290
 291                     ca_mutex_unlock(g_mutexAdapterServerContext);
 292                 }
 293             }
 294         }
 295         CAClearServerInfoList(tempServerInfoList);
 296     }
 297     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 298 }
 299
 300 static CAResult_t CACreateSocket(int *socketFD, const char *localIp, uint16_t *port)
 301 {
 302     VERIFY_NON_NULL(socketFD, IP_SERVER_TAG, "socketFD is NULL");
 303     VERIFY_NON_NULL(localIp, IP_SERVER_TAG, "localIp is NULL");
 304     VERIFY_NON_NULL(port, IP_SERVER_TAG, "port is NULL");
 305     // Create a UDP socket
 306     int sock = -1;
 307
 308 #ifdef SOCK_CLOEXEC
 309     sock = socket(AF_INET, SOCK_DGRAM | SOCK_CLOEXEC, IPPROTO_UDP);
 310 #endif
 311
 312     if (-1 == sock)
 313     {
 314         sock = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);
 315     }
 316
 317     if (-1 == sock)
 318     {
 319         OIC_LOG_V(ERROR, IP_SERVER_TAG, "Failed to create Socket, Error code: %s",
 320                   strerror(errno));
 321         return CA_STATUS_FAILED;
 322     }
 323
 324     // Make the socket non-blocking
 325     if (-1 == fcntl(sock, F_SETFL, O_NONBLOCK))
 326     {
 327         OIC_LOG_V(ERROR, IP_SERVER_TAG, "Failed to set non-block mode, Error code: %s",
 328                   strerror(errno));
 329
 330         close(sock);
 331         return CA_STATUS_FAILED;
 332     }
 333
 334     if (0 != *port)
 335     {
 336         int setOptionOn = SOCKETOPTION;
 337         if (-1 == setsockopt(sock, SOL_SOCKET, SO_REUSEADDR, (char *) &setOptionOn,
 338                              sizeof(setOptionOn)))
 339         {
 340             OIC_LOG_V(ERROR, IP_SERVER_TAG, "Failed to set SO_REUSEADDR! Error code: %s",
 341                       strerror(errno));
 342             close(sock);
 343             return CA_STATUS_FAILED;
 344         }
 345     }
 346
 347     struct sockaddr_in sockAddr = { 0 };
 348     uint16_t serverPort = *port;
 349     sockAddr.sin_family = AF_INET;
 350     sockAddr.sin_port = htons(serverPort);
 351     if (localIp)
 352     {
 353         sockAddr.sin_addr.s_addr = inet_addr(localIp);
 354     }
 355
 356     if (-1 != bind(sock, (struct sockaddr *) &sockAddr, sizeof(sockAddr)))
 357     {
 358         struct sockaddr_in sin;
 359         socklen_t len = sizeof(sin);
 360
 361         if (getsockname(sock, (struct sockaddr *)&sin, &len) == -1)
 362         {
 363             OIC_LOG_V(ERROR, IP_SERVER_TAG, "Failed to get socket[%s]!",
 364                       strerror(errno));
 365             close(sock);
 366             return CA_STATUS_FAILED;
 367         }
 368         else
 369         {
 370             serverPort = (uint16_t) ntohs(sin.sin_port);
 371         }
 372     }
 373     else
 374     {
 375         OIC_LOG_V(ERROR, IP_SERVER_TAG, "Failed to bind socket[%s]!",
 376                   strerror(errno));
 377         close(sock);
 378         return CA_STATUS_FAILED;
 379     }
 380
 381     *port = serverPort;
 382     *socketFD = sock;
 383     return CA_STATUS_OK;
 384 }
 385
 386 static void CACloseSocket(int socketFD)
 387 {
 388     if (-1 == socketFD)
 389     {
 390         OIC_LOG(ERROR, IP_SERVER_TAG, "Invalid Socket Fd");
 391         return;
 392     }
 393
 394     // close the socket
 395     if (-1 == close(socketFD))
 396     {
 397         OIC_LOG_V(ERROR, IP_SERVER_TAG, "Failed to close the socket, Error code: %s\n",
 398                   strerror(errno));
 399     }
 400 }
 401
 402 static CAResult_t CAStartUnicastServer(const char *localAddress, uint16_t *port,
 403                                        bool isSecured, int *serverFD)
 404 {
 405     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 406
 407     VERIFY_NON_NULL(serverFD, IP_SERVER_TAG, "serverFD");
 408     VERIFY_NON_NULL(localAddress, IP_SERVER_TAG, "localAddress");
 409     VERIFY_NON_NULL(port, IP_SERVER_TAG, "port");
 410
 411     CAResult_t ret = CACreateSocket(serverFD, localAddress, port);
 412     if (CA_STATUS_OK != ret)
 413     {
 414         OIC_LOG(ERROR, IP_SERVER_TAG, "Failed to create unicast socket");
 415     }
 416
 417     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 418     return ret;
 419 }
 420
 421 static CAResult_t CAIPStartPacketReceiverHandler()
 422 {
 423     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 424
 425     ca_mutex_lock(g_mutexServerInfoList);
 426
 427     uint32_t listLength = u_arraylist_length(g_serverInfoList);
 428
 429     ca_mutex_unlock(g_mutexServerInfoList);
 430
 431     ca_mutex_lock(g_mutexAdapterServerContext);
 432
 433     if (!g_adapterIPServerContext)
 434     {
 435         OIC_LOG(ERROR, IP_SERVER_TAG, "g_adapterIPServerContext NULL");
 436         ca_mutex_unlock(g_mutexAdapterServerContext);
 437         return CA_STATUS_FAILED;
 438     }
 439
 440     if (1 == listLength) //Its first time.
 441     {
 442         g_packetHandlerStopFlag = false;
 443         if (CA_STATUS_OK != ca_thread_pool_add_task(g_adapterIPServerContext->threadPool,
 444                                                    CAReceiveHandler, NULL ))
 445         {
 446             OIC_LOG(ERROR, IP_SERVER_TAG, "thread_pool_add_task failed!");
 447             ca_mutex_unlock(g_mutexAdapterServerContext);
 448             return CA_STATUS_FAILED;
 449         }
 450         OIC_LOG(DEBUG, IP_SERVER_TAG, "CAReceiveHandler thread started successfully.");
 451     }
 452     else
 453     {
 454         OIC_LOG(DEBUG, IP_SERVER_TAG, "CAReceiveHandler thread already is running");
 455     }
 456     ca_mutex_unlock(g_mutexAdapterServerContext);
 457
 458     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 459
 460     return CA_STATUS_OK;
 461 }
 462
 463 static void CAIPServerDestroyMutex(void)
 464 {
 465     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 466
 467     if (g_mutexServerInfoList)
 468     {
 469         ca_mutex_free(g_mutexServerInfoList);
 470         g_mutexServerInfoList = NULL;
 471     }
 472
 473     if (g_mutexAdapterServerContext)
 474     {
 475         ca_mutex_free(g_mutexAdapterServerContext);
 476         g_mutexAdapterServerContext = NULL;
 477     }
 478
 479     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 480 }
 481
 482 static CAResult_t CAIPServerCreateMutex(void)
 483 {
 484     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 485
 486     g_mutexServerInfoList = ca_mutex_new();
 487     if (!g_mutexServerInfoList)
 488     {
 489         OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 490         return CA_MEMORY_ALLOC_FAILED;
 491     }
 492
 493     g_mutexAdapterServerContext = ca_mutex_new();
 494     if (!g_mutexAdapterServerContext)
 495     {
 496         OIC_LOG(ERROR, IP_SERVER_TAG, "Failed to created mutex!");
 497         ca_mutex_free(g_mutexServerInfoList);
 498         g_mutexServerInfoList = NULL;
 499         return CA_MEMORY_ALLOC_FAILED;
 500     }
 501
 502     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 503     return CA_STATUS_OK;
 504 }
 505
 506 CAResult_t CAIPInitializeServer(const ca_thread_pool_t threadPool)
 507 {
 508     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 509
 510     // Input validation
 511     VERIFY_NON_NULL(threadPool, IP_SERVER_TAG, "Thread pool handle is NULL");
 512
 513     // Initialize mutex
 514     if (CA_STATUS_OK != CAIPServerCreateMutex())
 515     {
 516         OIC_LOG(ERROR, IP_SERVER_TAG, "Failed to create mutex!");
 517         return CA_STATUS_FAILED;
 518     }
 519
 520     ca_mutex_lock(g_mutexAdapterServerContext);
 521     g_adapterIPServerContext = (CAAdapterIPServerContext_t *) OICCalloc(1,
 522                                  sizeof(CAAdapterIPServerContext_t));
 523
 524     if (!g_adapterIPServerContext)
 525     {
 526         OIC_LOG(ERROR, IP_SERVER_TAG, "Malloc failed");
 527         ca_mutex_unlock(g_mutexAdapterServerContext);
 528         return CA_MEMORY_ALLOC_FAILED;
 529     }
 530
 531     g_adapterIPServerContext->threadPool = threadPool;
 532
 533     ca_mutex_unlock(g_mutexAdapterServerContext);
 534
 535     ca_mutex_lock(g_mutexServerInfoList);
 536
 537     g_serverInfoList = u_arraylist_create();
 538     if (!g_serverInfoList)
 539     {
 540         OIC_LOG(ERROR, IP_SERVER_TAG, "u_arraylist_create failed");
 541         ca_mutex_unlock(g_mutexServerInfoList);
 542         return CA_MEMORY_ALLOC_FAILED;
 543     }
 544     ca_mutex_unlock(g_mutexServerInfoList);
 545     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 546     return CA_STATUS_OK;
 547 }
 548
 549 void CAIPTerminateServer()
 550 {
 551     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 552     ca_mutex_lock(g_mutexAdapterServerContext);
 553     if (!g_adapterIPServerContext)
 554     {
 555         OIC_LOG(ERROR, IP_SERVER_TAG, "g_adapterIPServerContext NULL");
 556         ca_mutex_unlock(g_mutexAdapterServerContext);
 557         return;
 558     }
 559
 560     OICFree(g_adapterIPServerContext);
 561     g_adapterIPServerContext = NULL;
 562
 563     ca_mutex_unlock(g_mutexAdapterServerContext);
 564
 565     ca_mutex_lock(g_mutexServerInfoList);
 566
 567     CAClearServerInfoList(g_serverInfoList);
 568     g_serverInfoList = NULL;
 569
 570     ca_mutex_unlock(g_mutexServerInfoList);
 571     // Destroy mutex
 572     CAIPServerDestroyMutex();
 573
 574     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 575
 576 }
 577
 578 CAResult_t CAIPStartUnicastServer(const char *localAddress, uint16_t *port, bool isSecured)
 579 {
 580     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 581
 582     // Input validation
 583     VERIFY_NON_NULL(localAddress, IP_SERVER_TAG, "localAddress");
 584     VERIFY_NON_NULL(port, IP_SERVER_TAG, "port");
 585
 586     ca_mutex_lock(g_mutexServerInfoList);
 587     bool isUnicastServerStarted = CAIsUnicastServerStarted(g_serverInfoList, localAddress, *port);
 588     if (!isUnicastServerStarted)
 589     {
 590         int unicastServerFd = -1;
 591         if (CA_STATUS_OK != CAStartUnicastServer(localAddress, port, isSecured,
 592                                                  &unicastServerFd))
 593         {
 594             OIC_LOG(ERROR, IP_SERVER_TAG, "Failed to start unicast server!");
 595             ca_mutex_unlock(g_mutexServerInfoList);
 596             return CA_STATUS_FAILED;
 597         }
 598
 599         CAServerInfo_t *info = (CAServerInfo_t *) OICCalloc(1, sizeof(CAServerInfo_t));
 600         if (!info)
 601         {
 602             OIC_LOG(ERROR, IP_SERVER_TAG, "Malloc failed");
 603             close(unicastServerFd);
 604             ca_mutex_unlock(g_mutexServerInfoList);
 605             return CA_MEMORY_ALLOC_FAILED;
 606         }
 607
 608         char *netMask = NULL;
 609         if (CA_STATUS_OK != CAIPGetInterfaceSubnetMask(localAddress, &netMask))
 610         {
 611             OIC_LOG(ERROR, IP_SERVER_TAG, "Failed to get IP subnet");
 612         }
 613         if (netMask)
 614         {
 615             OICStrcpy(info->subNetMask, sizeof(info->subNetMask), netMask);
 616             OICFree(netMask);
 617         }
 618         OICStrcpy(info->endpoint.addr, sizeof(info->endpoint.addr), localAddress);
 619         info->endpoint.port = *port;
 620         info->endpoint.flags = isSecured ? CA_SECURE : 0;
 621         info->endpoint.adapter = CA_ADAPTER_IP;
 622         info->socketFd = unicastServerFd;
 623         info->isServerStarted = true;
 624         info->isMulticastServer = false;
 625         OICStrcpy(info->ifAddr, sizeof(info->ifAddr), localAddress);
 626
 627         CAResult_t res = CAAddServerInfo(g_serverInfoList, info);
 628         if (CA_STATUS_OK != res)
 629         {
 630             OIC_LOG(ERROR, IP_SERVER_TAG, "CAAddServerInfo failed!");
 631             close(unicastServerFd);
 632             ca_mutex_unlock(g_mutexServerInfoList);
 633             return res;
 634         }
 635         ca_mutex_unlock(g_mutexServerInfoList);
 636
 637         res = CAIPStartPacketReceiverHandler();
 638         if (CA_STATUS_OK != res)
 639         {
 640             OIC_LOG(ERROR, IP_SERVER_TAG, "CAIPStartPacketReceiverHandler failed!");
 641             close(unicastServerFd);
 642             return res;
 643         }
 644     }
 645     else
 646     {
 647         OIC_LOG_V(DEBUG, IP_SERVER_TAG, "Already Unicast Server Started ip [%s] port [%d]",
 648                   localAddress, *port);
 649         ca_mutex_unlock(g_mutexServerInfoList);
 650     }
 651
 652     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 653     return CA_STATUS_OK;
 654 }
 655
 656 CAResult_t CAIPStartMulticastServer(const char *localAddress, const char *multicastAddress,
 657                                           uint16_t multicastPort)
 658 {
 659     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 660
 661     // Input validation
 662     VERIFY_NON_NULL(localAddress, IP_SERVER_TAG, "localAddress");
 663     VERIFY_NON_NULL(multicastAddress, IP_SERVER_TAG, "port");
 664
 665     uint16_t port = multicastPort;
 666     if (0 >= port)
 667     {
 668         OIC_LOG(ERROR, IP_SERVER_TAG, "Invalid input: Multicast port is invalid!");
 669         return CA_STATUS_INVALID_PARAM;
 670     }
 671
 672     ca_mutex_lock(g_mutexServerInfoList);
 673     bool isMulticastServerStarted = CAIsMulticastServerStarted(g_serverInfoList, localAddress,
 674                                                                multicastAddress, port);
 675     if (!isMulticastServerStarted)
 676     {
 677         int mulicastServerFd = -1;
 678         CAResult_t ret = CACreateSocket(&mulicastServerFd, multicastAddress, &port);
 679         if (ret != CA_STATUS_OK)
 680         {
 681             OIC_LOG(ERROR, IP_SERVER_TAG, "Failed to create multicast socket");
 682             ca_mutex_unlock(g_mutexServerInfoList);
 683             return ret;
 684         }
 685
 686         struct ip_mreq multicastMemberReq = {.imr_interface.s_addr = inet_addr(localAddress)};
 687         inet_aton(multicastAddress, &multicastMemberReq.imr_multiaddr);
 688
 689         if (-1 == setsockopt(mulicastServerFd, IPPROTO_IP, IP_ADD_MEMBERSHIP,
 690                              (char *) &multicastMemberReq, sizeof(struct ip_mreq)))
 691         {
 692             OIC_LOG_V(ERROR, IP_SERVER_TAG,
 693                       "Failed to add to multicast group, Error code: %s\n", strerror(errno));
 694             close(mulicastServerFd);
 695             ca_mutex_unlock(g_mutexServerInfoList);
 696             return CA_STATUS_FAILED;
 697         }
 698
 699         CAServerInfo_t *info = (CAServerInfo_t *) OICCalloc(1, sizeof(CAServerInfo_t));
 700         if (!info)
 701         {
 702             OIC_LOG(ERROR, IP_SERVER_TAG, "Malloc failed");
 703             close(mulicastServerFd);
 704             ca_mutex_unlock(g_mutexServerInfoList);
 705             return CA_MEMORY_ALLOC_FAILED;
 706         }
 707
 708         char *netMask = NULL;
 709         if (CA_STATUS_OK != CAIPGetInterfaceSubnetMask(localAddress, &netMask))
 710         {
 711             OIC_LOG(ERROR, IP_SERVER_TAG, "Failed to get IP subnet");
 712         }
 713         if (netMask)
 714         {
 715             OICStrcpy(info->subNetMask, sizeof(info->subNetMask), netMask);
 716             OICFree(netMask);
 717         }
 718
 719         OICStrcpy(info->endpoint.addr, sizeof(info->endpoint.addr), multicastAddress);
 720         info->endpoint.port = multicastPort;
 721         info->endpoint.flags = 0;
 722         info->socketFd = mulicastServerFd;
 723         info->isServerStarted = true;
 724         info->isMulticastServer = true;
 725         OICStrcpy(info->ifAddr, sizeof(info->ifAddr), localAddress);
 726
 727         ret = CAAddServerInfo(g_serverInfoList, info);
 728
 729         if (CA_STATUS_OK != ret)
 730         {
 731             OIC_LOG(ERROR, IP_SERVER_TAG, "CAAddServerInfo failed!");
 732             close(mulicastServerFd);
 733             ca_mutex_unlock(g_mutexServerInfoList);
 734             return ret;
 735         }
 736         ca_mutex_unlock(g_mutexServerInfoList);
 737
 738         ret = CAIPStartPacketReceiverHandler();
 739         if (CA_STATUS_OK != ret)
 740         {
 741             OIC_LOG(ERROR, IP_SERVER_TAG, "CAIPStartPacketReceiverHandler failed!");
 742             close(mulicastServerFd);
 743             return ret;
 744         }
 745     }
 746     else
 747     {
 748         OIC_LOG_V(DEBUG, IP_SERVER_TAG,
 749                   "Multicast Server is already started on interface addr[%s]", localAddress);
 750         ca_mutex_unlock(g_mutexServerInfoList);
 751     }
 752
 753     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 754     return CA_STATUS_OK;
 755 }
 756
 757 CAResult_t CAIPStopServer(const char *interfaceAddress)
 758 {
 759     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 760
 761     VERIFY_NON_NULL(interfaceAddress, IP_SERVER_TAG, "interfaceAddress is NULL");
 762
 763     ca_mutex_lock(g_mutexServerInfoList);
 764     uint32_t listIndex = 0;
 765     uint32_t listLength = u_arraylist_length(g_serverInfoList);
 766
 767     for (listIndex = 0; listIndex < listLength;)
 768     {
 769         CAServerInfo_t *info = (CAServerInfo_t *) u_arraylist_get(g_serverInfoList, listIndex);
 770         if (!info)
 771         {
 772             listIndex++;
 773             continue;
 774         }
 775
 776         if (info->isMulticastServer && strncmp(interfaceAddress, info->ifAddr, strlen(info->ifAddr))
 777                 == 0)
 778         {
 779             if (u_arraylist_remove(g_serverInfoList, listIndex))
 780             {
 781                 struct ip_mreq multicastMemberReq = { { 0 }, { 0 } };
 782
 783                 multicastMemberReq.imr_interface.s_addr = inet_addr(info->ifAddr);
 784                 inet_aton(info->endpoint.addr, &multicastMemberReq.imr_multiaddr);
 785                 if (-1 == setsockopt(info->socketFd, IPPROTO_IP, IP_DROP_MEMBERSHIP,
 786                                      (char *) &multicastMemberReq, sizeof(struct ip_mreq)))
 787                 {
 788                     OIC_LOG_V(ERROR, IP_SERVER_TAG,
 789                               "Failed to leave multicast group, Error code: %s", strerror(errno));
 790                 }
 791                 CACloseSocket(info->socketFd);
 792                 OICFree(info);
 793                 OIC_LOG(DEBUG, IP_SERVER_TAG, "Multicast server is stopped successfully.");
 794                 // Reduce list length by 1 as we removed one element.
 795                 listLength--;
 796             }
 797             else
 798             {
 799                 OIC_LOG(ERROR, IP_SERVER_TAG, "u_arraylist_remove failed.");
 800                 ca_mutex_unlock(g_mutexServerInfoList);
 801                 return CA_STATUS_FAILED;
 802             }
 803         }
 804         else if (strncmp(interfaceAddress, info->endpoint.addr, strlen(info->endpoint.addr)) == 0)
 805         {
 806             if (u_arraylist_remove(g_serverInfoList, listIndex))
 807             {
 808                 CACloseSocket(info->socketFd);
 809                 OICFree(info);
 810                 OIC_LOG(DEBUG, IP_SERVER_TAG, "Unicast server is stopped successfully.");
 811                 // Reduce list length by 1 as we removed one element.
 812                 listLength--;
 813             }
 814             else
 815             {
 816                 OIC_LOG(ERROR, IP_SERVER_TAG, "u_arraylist_remove failed.");
 817                 ca_mutex_unlock(g_mutexServerInfoList);
 818                 return CA_STATUS_FAILED;
 819             }
 820         }
 821         else
 822         {
 823             listIndex++;
 824         }
 825     }
 826
 827     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 828     ca_mutex_unlock(g_mutexServerInfoList);
 829     return CA_STATUS_OK;
 830 }
 831
 832 CAResult_t CAIPStopAllServers()
 833 {
 834     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 835
 836     g_packetHandlerStopFlag = true;
 837
 838     ca_mutex_lock(g_mutexServerInfoList);
 839
 840     uint32_t listIndex = 0;
 841     uint32_t listLength = u_arraylist_length(g_serverInfoList);
 842     for (listIndex = 0; listIndex < listLength;)
 843     {
 844         CAServerInfo_t *info = (CAServerInfo_t *) u_arraylist_get(g_serverInfoList, listIndex);
 845         if (!info)
 846         {
 847             listIndex++;
 848             continue;
 849         }
 850         if (u_arraylist_remove(g_serverInfoList, listIndex))
 851         {
 852             if (info->isMulticastServer)
 853             {
 854                 struct ip_mreq multicastMemberReq = { { 0 }, { 0 } };
 855
 856                 multicastMemberReq.imr_interface.s_addr = inet_addr(info->ifAddr);
 857                 inet_aton(info->endpoint.addr, &multicastMemberReq.imr_multiaddr);
 858                 if (-1 == setsockopt(info->socketFd, IPPROTO_IP, IP_DROP_MEMBERSHIP,
 859                                      (char *) &multicastMemberReq, sizeof(struct ip_mreq)))
 860                 {
 861                     OIC_LOG_V(ERROR, IP_SERVER_TAG,
 862                               "Failed to leave multicast group, Error code: %s", strerror(errno));
 863                 }
 864             }
 865             CACloseSocket(info->socketFd);
 866             //Freeing server info.
 867             OICFree(info);
 868             // Reduce list length by 1 as we removed one element.
 869             listLength--;
 870         }
 871         else
 872         {
 873             OIC_LOG(ERROR, IP_SERVER_TAG, "u_arraylist_remove failed.");
 874             ca_mutex_unlock(g_mutexServerInfoList);
 875             return CA_STATUS_FAILED;
 876         }
 877     }
 878
 879     ca_mutex_unlock(g_mutexServerInfoList);
 880
 881     OIC_LOG(DEBUG, IP_SERVER_TAG, "All Server stopped successfully. OUT");
 882     return CA_STATUS_OK;
 883 }
 884
 885 uint16_t CAGetServerPortNum(const char *ipAddress, bool isSecured)
 886 {
 887     ca_mutex_lock(g_mutexServerInfoList);
 888
 889     uint16_t port = CAGetServerPort(g_serverInfoList, ipAddress, isSecured);
 890
 891     ca_mutex_unlock(g_mutexServerInfoList);
 892
 893     return port;
 894 }
 895
 896 CAResult_t CAGetIPServerInfoList(u_arraylist_t **serverInfoList)
 897 {
 898     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 899     ca_mutex_lock(g_mutexServerInfoList);
 900
 901     uint32_t list_index = 0;
 902     uint32_t list_length = u_arraylist_length(g_serverInfoList);
 903     for (list_index = 0; list_index < list_length; list_index++)
 904     {
 905         CAServerInfo_t *info = (CAServerInfo_t *) u_arraylist_get(g_serverInfoList, list_index);
 906         if (!info)
 907         {
 908             continue;
 909         }
 910
 911         CAServerInfo_t *newNetinfo = (CAServerInfo_t *) OICMalloc(sizeof(CAServerInfo_t));
 912         if (!newNetinfo)
 913         {
 914             OIC_LOG(ERROR, IP_SERVER_TAG, "Malloc failed!");
 915             ca_mutex_unlock(g_mutexServerInfoList);
 916             return CA_MEMORY_ALLOC_FAILED;
 917         }
 918
 919         *newNetinfo = *info;
 920
 921         CAResult_t result = u_arraylist_add(*serverInfoList, (void *) newNetinfo);
 922         if (CA_STATUS_OK != result)
 923         {
 924             OIC_LOG(ERROR, IP_SERVER_TAG, "u_arraylist_add failed!");
 925             ca_mutex_unlock(g_mutexServerInfoList);
 926             return CA_STATUS_FAILED;
 927         }
 928     }
 929     ca_mutex_unlock(g_mutexServerInfoList);
 930     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 931     return CA_STATUS_OK;
 932 }
 933
 934 void CAIPSetPacketReceiveCallback(CAIPPacketReceivedCallback callback)
 935 {
 936     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 937
 938     ca_mutex_lock(g_mutexAdapterServerContext);
 939
 940     if (g_adapterIPServerContext)
 941     {
 942         g_adapterIPServerContext->packetReceivedCallback = callback;
 943     }
 944     else
 945     {
 946         OIC_LOG(ERROR, IP_SERVER_TAG, "g_adapterIPServerContext NULL");
 947     }
 948
 949     ca_mutex_unlock(g_mutexAdapterServerContext);
 950
 951     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 952 }
 953
 954 void CAIPSetErrorHandleCallback(CAIPErrorHandleCallback ipErrorCallback)
 955 {
 956     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 957
 958     ca_mutex_lock(g_mutexAdapterServerContext);
 959
 960     if (g_adapterIPServerContext)
 961     {
 962         g_adapterIPServerContext->IPErrorCallback = ipErrorCallback;
 963     }
 964
 965     ca_mutex_unlock(g_mutexAdapterServerContext);
 966
 967     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 968 }
 969
 970 void CAIPSetExceptionCallback(CAIPExceptionCallback callback)
 971 {
 972     OIC_LOG(DEBUG, IP_SERVER_TAG, "IN");
 973     ca_mutex_lock(g_mutexAdapterServerContext);
 974
 975     if (g_adapterIPServerContext)
 976     {
 977         g_adapterIPServerContext->exceptionCallback = callback;
 978     }
 979     else
 980     {
 981         OIC_LOG(ERROR, IP_SERVER_TAG, "g_adapterIPServerContext NULL");
 982     }
 983
 984     ca_mutex_unlock(g_mutexAdapterServerContext);
 985
 986     OIC_LOG(DEBUG, IP_SERVER_TAG, "OUT");
 987 }
 988