resource/csdk/connectivity/src/ip_adapter/caipadapter.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 #include "caipadapter.h"
  21
  22 #include <stdio.h>
  23 #include <stdlib.h>
  24 #include <string.h>
  25 #include <stdint.h>
  26
  27 #include "caipinterface.h"
  28 #include "caqueueingthread.h"
  29 #include "caadapterutils.h"
  30 #ifdef __WITH_DTLS__
  31 #include "caadapternetdtls.h"
  32 #endif
  33 #include "camutex.h"
  34 #include "uarraylist.h"
  35 #include "caremotehandler.h"
  36 #include "logger.h"
  37 #include "oic_malloc.h"
  38 #include "oic_string.h"
  39
  40 /**
  41  * Logging tag for module name.
  42  */
  43 #define TAG "IP_ADAP"
  44
  45 #ifndef SINGLE_THREAD
  46 /**
  47  * Holds inter thread ip data information.
  48  */
  49 typedef struct
  50 {
  51     CAEndpoint_t *remoteEndpoint;
  52     void *data;
  53     uint32_t dataLen;
  54     bool isMulticast;
  55 } CAIPData_t;
  56
  57 /**
  58  * Queue handle for Send Data.
  59  */
  60 static CAQueueingThread_t *g_sendQueueHandle = NULL;
  61 #endif
  62
  63 /**
  64  * Network Packet Received Callback to CA.
  65  */
  66 static CANetworkPacketReceivedCallback g_networkPacketCallback = NULL;
  67
  68 /**
  69  * Network Changed Callback to CA.
  70  */
  71 static CANetworkChangeCallback g_networkChangeCallback = NULL;
  72
  73 /**
  74  * error Callback to CA adapter.
  75  */
  76 static CAErrorHandleCallback g_errorCallback = NULL;
  77
  78 static void CAIPPacketReceivedCB(const CASecureEndpoint_t *endpoint,
  79                                  const void *data, uint32_t dataLength);
  80 #ifdef __WITH_DTLS__
  81 static void CAIPPacketSendCB(CAEndpoint_t *endpoint,
  82                              const void *data, uint32_t dataLength);
  83 #endif
  84
  85 #ifndef SINGLE_THREAD
  86
  87 static CAResult_t CAIPInitializeQueueHandles();
  88
  89 static void CAIPDeinitializeQueueHandles();
  90
  91 static void CAIPSendDataThread(void *threadData);
  92
  93 static CAIPData_t *CACreateIPData(const CAEndpoint_t *remoteEndpoint,
  94                                   const void *data, uint32_t dataLength,
  95                                   bool isMulticast);
  96
  97 void CAFreeIPData(CAIPData_t *ipData);
  98
  99 static void CADataDestroyer(void *data, uint32_t size);
 100
 101 CAResult_t CAIPInitializeQueueHandles()
 102 {
 103     OIC_LOG(DEBUG, TAG, "IN");
 104
 105     // Check if the message queue is already initialized
 106     if (g_sendQueueHandle)
 107     {
 108         OIC_LOG(DEBUG, TAG, "send queue handle is already initialized!");
 109         return CA_STATUS_OK;
 110     }
 111
 112     // Create send message queue
 113     g_sendQueueHandle = OICMalloc(sizeof(CAQueueingThread_t));
 114     if (!g_sendQueueHandle)
 115     {
 116         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 117         return CA_MEMORY_ALLOC_FAILED;
 118     }
 119
 120     if (CA_STATUS_OK != CAQueueingThreadInitialize(g_sendQueueHandle,
 121                                 (const ca_thread_pool_t)caglobals.ip.threadpool,
 122                                 CAIPSendDataThread, CADataDestroyer))
 123     {
 124         OIC_LOG(ERROR, TAG, "Failed to Initialize send queue thread");
 125         OICFree(g_sendQueueHandle);
 126         g_sendQueueHandle = NULL;
 127         return CA_STATUS_FAILED;
 128     }
 129
 130     OIC_LOG(DEBUG, TAG, "OUT");
 131     return CA_STATUS_OK;
 132 }
 133
 134 void CAIPDeinitializeQueueHandles()
 135 {
 136     OIC_LOG(DEBUG, TAG, "IN");
 137
 138     CAQueueingThreadDestroy(g_sendQueueHandle);
 139     OICFree(g_sendQueueHandle);
 140     g_sendQueueHandle = NULL;
 141
 142     OIC_LOG(DEBUG, TAG, "OUT");
 143 }
 144
 145 #endif // SINGLE_THREAD
 146
 147 void CAIPConnectionStateCB(const char *ipAddress, CANetworkStatus_t status)
 148 {
 149     (void)ipAddress;
 150     (void)status;
 151     OIC_LOG(DEBUG, TAG, "IN");
 152 }
 153
 154 #ifdef __WITH_DTLS__
 155 static void CAIPPacketSendCB(CAEndpoint_t *endpoint, const void *data, uint32_t dataLength)
 156 {
 157     OIC_LOG(DEBUG, TAG, "IN");
 158
 159     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
 160     VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
 161
 162     CAIPSendData(endpoint, data, dataLength, false);
 163
 164     OIC_LOG(DEBUG, TAG, "OUT");
 165 }
 166 #endif
 167
 168
 169 void CAIPPacketReceivedCB(const CASecureEndpoint_t *sep, const void *data,
 170                           uint32_t dataLength)
 171 {
 172     OIC_LOG(DEBUG, TAG, "IN");
 173
 174     VERIFY_NON_NULL_VOID(sep, TAG, "sep is NULL");
 175     VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
 176
 177     OIC_LOG_V(DEBUG, TAG, "Address: %s, port:%d", sep->endpoint.addr, sep->endpoint.port);
 178
 179     if (g_networkPacketCallback)
 180     {
 181         g_networkPacketCallback(sep, data, dataLength);
 182     }
 183     OIC_LOG(DEBUG, TAG, "OUT");
 184 }
 185
 186 void CAIPErrorHandler (const CAEndpoint_t *endpoint, const void *data,
 187                        uint32_t dataLength, CAResult_t result)
 188 {
 189     OIC_LOG(DEBUG, TAG, "IN");
 190
 191     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
 192
 193     VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
 194
 195     void *buf = (void*)OICMalloc(sizeof(char) * dataLength);
 196     if (!buf)
 197     {
 198         OIC_LOG(ERROR, TAG, "Memory Allocation failed!");
 199         return;
 200     }
 201     memcpy(buf, data, dataLength);
 202     if (g_errorCallback)
 203     {
 204         g_errorCallback(endpoint, buf, dataLength, result);
 205     }
 206     else
 207     {
 208         OICFree(buf);
 209     }
 210
 211     OIC_LOG(DEBUG, TAG, "OUT");
 212 }
 213
 214 static void CAInitializeIPGlobals()
 215 {
 216     caglobals.ip.u6.fd  = -1;
 217     caglobals.ip.u6s.fd = -1;
 218     caglobals.ip.u4.fd  = -1;
 219     caglobals.ip.u4s.fd = -1;
 220     caglobals.ip.m6.fd  = -1;
 221     caglobals.ip.m6s.fd = -1;
 222     caglobals.ip.m4.fd  = -1;
 223     caglobals.ip.m4s.fd = -1;
 224     caglobals.ip.u6.port  = 0;
 225     caglobals.ip.u6s.port = 0;
 226     caglobals.ip.u4.port  = 0;
 227     caglobals.ip.u4s.port = 0;
 228     caglobals.ip.m6.port  = CA_COAP;
 229     caglobals.ip.m6s.port = CA_SECURE_COAP;
 230     caglobals.ip.m4.port  = CA_COAP;
 231     caglobals.ip.m4s.port = CA_SECURE_COAP;
 232
 233     CATransportFlags_t flags = 0;
 234     if (caglobals.client)
 235     {
 236         flags |= caglobals.clientFlags;
 237     }
 238     if (caglobals.server)
 239     {
 240         flags |= caglobals.serverFlags;
 241     }
 242     caglobals.ip.ipv6enabled = flags & CA_IPV6;
 243     caglobals.ip.ipv4enabled = flags & CA_IPV4;
 244     caglobals.ip.dualstack = caglobals.ip.ipv6enabled && caglobals.ip.ipv4enabled;
 245 }
 246
 247 CAResult_t CAInitializeIP(CARegisterConnectivityCallback registerCallback,
 248                           CANetworkPacketReceivedCallback networkPacketCallback,
 249                           CANetworkChangeCallback netCallback,
 250                           CAErrorHandleCallback errorCallback, ca_thread_pool_t handle)
 251 {
 252     OIC_LOG(DEBUG, TAG, "IN");
 253     VERIFY_NON_NULL(registerCallback, TAG, "registerCallback");
 254     VERIFY_NON_NULL(networkPacketCallback, TAG, "networkPacketCallback");
 255     VERIFY_NON_NULL(netCallback, TAG, "netCallback");
 256 #ifndef SINGLE_THREAD
 257     VERIFY_NON_NULL(handle, TAG, "thread pool handle");
 258 #endif
 259
 260     g_networkChangeCallback = netCallback;
 261     g_networkPacketCallback = networkPacketCallback;
 262     g_errorCallback = errorCallback;
 263
 264     CAInitializeIPGlobals();
 265     caglobals.ip.threadpool = handle;
 266
 267     CAIPSetPacketReceiveCallback(CAIPPacketReceivedCB);
 268 #ifdef __WITH_DTLS__
 269     CAAdapterNetDtlsInit();
 270
 271     CADTLSSetAdapterCallbacks(CAIPPacketReceivedCB, CAIPPacketSendCB, 0);
 272 #endif
 273
 274     CAConnectivityHandler_t ipHandler;
 275     ipHandler.startAdapter = CAStartIP;
 276     ipHandler.startListenServer = CAStartIPListeningServer;
 277     ipHandler.stopListenServer = CAStopIPListeningServer;
 278     ipHandler.startDiscoveryServer = CAStartIPDiscoveryServer;
 279     ipHandler.sendData = CASendIPUnicastData;
 280     ipHandler.sendDataToAll = CASendIPMulticastData;
 281     ipHandler.GetnetInfo = CAGetIPInterfaceInformation;
 282     ipHandler.readData = CAReadIPData;
 283     ipHandler.stopAdapter = CAStopIP;
 284     ipHandler.terminate = CATerminateIP;
 285     registerCallback(ipHandler, CA_ADAPTER_IP);
 286
 287     OIC_LOG(INFO, TAG, "OUT IntializeIP is Success");
 288     return CA_STATUS_OK;
 289 }
 290
 291 CAResult_t CAStartIP()
 292 {
 293     OIC_LOG(DEBUG, TAG, "IN");
 294
 295     CAIPStartNetworkMonitor();
 296 #ifdef SINGLE_THREAD
 297     uint16_t unicastPort = 55555;
 298     // Address is hardcoded as we are using Single Interface
 299     CAResult_t ret = CAIPStartServer();
 300     if (CA_STATUS_OK != ret)
 301     {
 302         OIC_LOG_V(DEBUG, TAG, "CAIPStartServer failed[%d]", ret);
 303         return ret;
 304     }
 305 #else
 306     if (CA_STATUS_OK != CAIPInitializeQueueHandles())
 307     {
 308         OIC_LOG(ERROR, TAG, "Failed to Initialize Queue Handle");
 309         CATerminateIP();
 310         return CA_STATUS_FAILED;
 311     }
 312
 313     // Start send queue thread
 314     if (CA_STATUS_OK != CAQueueingThreadStart(g_sendQueueHandle))
 315     {
 316         OIC_LOG(ERROR, TAG, "Failed to Start Send Data Thread");
 317         return CA_STATUS_FAILED;
 318     }
 319
 320     CAResult_t ret = CAIPStartServer((const ca_thread_pool_t)caglobals.ip.threadpool);
 321     if (CA_STATUS_OK != ret)
 322     {
 323         OIC_LOG_V(ERROR, TAG, "Failed to start server![%d]", ret);
 324         return ret;
 325     }
 326
 327 #endif
 328
 329     OIC_LOG(DEBUG, TAG, "OUT");
 330     return CA_STATUS_OK;
 331 }
 332
 333 CAResult_t CAStartIPListeningServer()
 334 {
 335     OIC_LOG(DEBUG, TAG, "IN");
 336     CAResult_t ret = CAIPStartListenServer();
 337     if (CA_STATUS_OK != ret)
 338     {
 339         OIC_LOG_V(ERROR, TAG, "Failed to start listening server![%d]", ret);
 340         return ret;
 341     }
 342     OIC_LOG(DEBUG, TAG, "OUT");
 343     return CA_STATUS_OK;
 344 }
 345
 346 CAResult_t CAStopIPListeningServer()
 347 {
 348     OIC_LOG(DEBUG, TAG, "IN");
 349     CAResult_t ret = CAIPStopListenServer();
 350     if (CA_STATUS_OK != ret)
 351     {
 352         OIC_LOG_V(ERROR, TAG, "Failed to stop listening server![%d]", ret);
 353     }
 354     OIC_LOG(DEBUG, TAG, "OUT");
 355     return ret;
 356 }
 357
 358 CAResult_t CAStartIPDiscoveryServer()
 359 {
 360     return CAStartIPListeningServer();
 361 }
 362
 363 static int32_t CAQueueIPData(bool isMulticast, const CAEndpoint_t *endpoint,
 364                              const void *data, uint32_t dataLength)
 365 {
 366     OIC_LOG(DEBUG, TAG, "IN");
 367
 368     VERIFY_NON_NULL_RET(endpoint, TAG, "remoteEndpoint", -1);
 369     VERIFY_NON_NULL_RET(data, TAG, "data", -1);
 370
 371     if (0 == dataLength)
 372     {
 373         OIC_LOG(ERROR, TAG, "Invalid Data Length");
 374         return -1;
 375     }
 376
 377 #ifdef SINGLE_THREAD
 378
 379     CAIPSendData(endpoint, data, dataLength, isMulticast);
 380     return dataLength;
 381
 382 #else
 383
 384     VERIFY_NON_NULL_RET(g_sendQueueHandle, TAG, "sendQueueHandle", -1);
 385     // Create IPData to add to queue
 386     CAIPData_t *ipData = CACreateIPData(endpoint, data, dataLength, isMulticast);
 387     if (!ipData)
 388     {
 389         OIC_LOG(ERROR, TAG, "Failed to create ipData!");
 390         return -1;
 391     }
 392     // Add message to send queue
 393     CAQueueingThreadAddData(g_sendQueueHandle, ipData, sizeof(CAIPData_t));
 394
 395 #endif // SINGLE_THREAD
 396
 397     OIC_LOG(DEBUG, TAG, "OUT");
 398     return dataLength;
 399 }
 400
 401 int32_t CASendIPUnicastData(const CAEndpoint_t *endpoint,
 402                             const void *data, uint32_t dataLength)
 403 {
 404     OIC_LOG(DEBUG, TAG, "IN");
 405     return CAQueueIPData(false, endpoint, data, dataLength);
 406 }
 407
 408 int32_t CASendIPMulticastData(const CAEndpoint_t *endpoint, const void *data, uint32_t dataLength)
 409 {
 410     OIC_LOG(DEBUG, TAG, "IN");
 411     return CAQueueIPData(true, endpoint, data, dataLength);
 412 }
 413
 414 CAResult_t CAReadIPData()
 415 {
 416     OIC_LOG(DEBUG, TAG, "IN");
 417     CAIPPullData();
 418     OIC_LOG(DEBUG, TAG, "OUT");
 419     return CA_STATUS_OK;
 420 }
 421
 422 CAResult_t CAStopIP()
 423 {
 424     OIC_LOG(DEBUG, TAG, "IN");
 425
 426 #ifdef __WITH_DTLS__
 427     CAAdapterNetDtlsDeInit();
 428 #endif
 429
 430 #ifndef SINGLE_THREAD
 431     if (g_sendQueueHandle && g_sendQueueHandle->threadMutex)
 432     {
 433         CAQueueingThreadStop(g_sendQueueHandle);
 434     }
 435
 436     CAIPDeinitializeQueueHandles();
 437 #endif
 438
 439     CAIPStopNetworkMonitor();
 440     CAIPStopServer();
 441     //Re-initializing the Globals to start them again
 442     CAInitializeIPGlobals();
 443
 444     OIC_LOG(DEBUG, TAG, "OUT");
 445     return CA_STATUS_OK;
 446 }
 447
 448 void CATerminateIP()
 449 {
 450     OIC_LOG(DEBUG, TAG, "IN");
 451
 452 #ifdef __WITH_DTLS__
 453     CADTLSSetAdapterCallbacks(NULL, NULL, 0);
 454 #endif
 455
 456     CAIPSetPacketReceiveCallback(NULL);
 457
 458 #ifndef SINGLE_THREAD
 459     CAIPDeinitializeQueueHandles();
 460 #endif
 461
 462     OIC_LOG(DEBUG, TAG, "OUT");
 463 }
 464
 465 #ifndef SINGLE_THREAD
 466
 467 void CAIPSendDataThread(void *threadData)
 468 {
 469     OIC_LOG(DEBUG, TAG, "IN");
 470
 471     CAIPData_t *ipData = (CAIPData_t *) threadData;
 472     if (!ipData)
 473     {
 474         OIC_LOG(DEBUG, TAG, "Invalid ip data!");
 475         return;
 476     }
 477
 478     if (ipData->isMulticast)
 479     {
 480         //Processing for sending multicast
 481         OIC_LOG(DEBUG, TAG, "Send Multicast Data is called");
 482         CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, true);
 483     }
 484     else
 485     {
 486         //Processing for sending unicast
 487 #ifdef __WITH_DTLS__
 488         if (ipData->remoteEndpoint && ipData->remoteEndpoint->flags & CA_SECURE)
 489         {
 490             OIC_LOG(DEBUG, TAG, "CAAdapterNetDtlsEncrypt called!");
 491             CAResult_t result = CAAdapterNetDtlsEncrypt(ipData->remoteEndpoint,
 492                                                ipData->data, ipData->dataLen);
 493             if (CA_STATUS_OK != result)
 494             {
 495                 OIC_LOG(ERROR, TAG, "CAAdapterNetDtlsEncrypt failed!");
 496             }
 497             OIC_LOG_V(DEBUG, TAG,
 498                       "CAAdapterNetDtlsEncrypt returned with result[%d]", result);
 499         }
 500         else
 501         {
 502             OIC_LOG(DEBUG, TAG, "Send Unicast Data is called");
 503             CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, false);
 504         }
 505 #else
 506         CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, false);
 507 #endif
 508     }
 509
 510     OIC_LOG(DEBUG, TAG, "OUT");
 511 }
 512
 513 #endif
 514
 515 #ifndef SINGLE_THREAD
 516
 517 CAIPData_t *CACreateIPData(const CAEndpoint_t *remoteEndpoint, const void *data,
 518                            uint32_t dataLength, bool isMulticast)
 519 {
 520     VERIFY_NON_NULL_RET(data, TAG, "IPData is NULL", NULL);
 521
 522     CAIPData_t *ipData = (CAIPData_t *) OICMalloc(sizeof(*ipData));
 523     if (!ipData)
 524     {
 525         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 526         return NULL;
 527     }
 528
 529     ipData->remoteEndpoint = CACloneEndpoint(remoteEndpoint);
 530     ipData->data = (void *) OICMalloc(dataLength);
 531     if (!ipData->data)
 532     {
 533         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 534         CAFreeIPData(ipData);
 535         return NULL;
 536     }
 537
 538     memcpy(ipData->data, data, dataLength);
 539     ipData->dataLen = dataLength;
 540
 541     ipData->isMulticast = isMulticast;
 542
 543     return ipData;
 544 }
 545
 546 void CAFreeIPData(CAIPData_t *ipData)
 547 {
 548     VERIFY_NON_NULL_VOID(ipData, TAG, "ipData is NULL");
 549
 550     CAFreeEndpoint(ipData->remoteEndpoint);
 551     OICFree(ipData->data);
 552     OICFree(ipData);
 553 }
 554
 555 void CADataDestroyer(void *data, uint32_t size)
 556 {
 557     if (size < sizeof(CAIPData_t))
 558     {
 559         OIC_LOG_V(ERROR, TAG, "Destroy data too small %p %d", data, size);
 560     }
 561     CAIPData_t *etdata = (CAIPData_t *) data;
 562
 563     CAFreeIPData(etdata);
 564 }
 565
 566 #endif // SINGLE_THREAD