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 "OIC_CA_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 CAAdapterChangeCallback 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     // Check if the message queue is already initialized
 104     if (g_sendQueueHandle)
 105     {
 106         OIC_LOG(DEBUG, TAG, "send queue handle is already initialized!");
 107         return CA_STATUS_OK;
 108     }
 109
 110     // Create send message queue
 111     g_sendQueueHandle = OICMalloc(sizeof(CAQueueingThread_t));
 112     if (!g_sendQueueHandle)
 113     {
 114         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 115         return CA_MEMORY_ALLOC_FAILED;
 116     }
 117
 118     if (CA_STATUS_OK != CAQueueingThreadInitialize(g_sendQueueHandle,
 119                                 (const ca_thread_pool_t)caglobals.ip.threadpool,
 120                                 CAIPSendDataThread, CADataDestroyer))
 121     {
 122         OIC_LOG(ERROR, TAG, "Failed to Initialize send queue thread");
 123         OICFree(g_sendQueueHandle);
 124         g_sendQueueHandle = NULL;
 125         return CA_STATUS_FAILED;
 126     }
 127
 128     return CA_STATUS_OK;
 129 }
 130
 131 void CAIPDeinitializeQueueHandles()
 132 {
 133     CAQueueingThreadDestroy(g_sendQueueHandle);
 134     OICFree(g_sendQueueHandle);
 135     g_sendQueueHandle = NULL;
 136 }
 137
 138 #endif // SINGLE_THREAD
 139
 140 void CAIPConnectionStateCB(CATransportAdapter_t adapter, CANetworkStatus_t status)
 141 {
 142     if (g_networkChangeCallback)
 143     {
 144         g_networkChangeCallback(adapter, status);
 145     }
 146     else
 147     {
 148         OIC_LOG(ERROR, TAG, "g_networkChangeCallback is NULL");
 149     }
 150 }
 151
 152 #ifdef __WITH_DTLS__
 153 static void CAIPPacketSendCB(CAEndpoint_t *endpoint, const void *data, uint32_t dataLength)
 154 {
 155     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
 156     VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
 157
 158     CAIPSendData(endpoint, data, dataLength, false);
 159 }
 160 #endif
 161
 162
 163 void CAIPPacketReceivedCB(const CASecureEndpoint_t *sep, const void *data,
 164                           uint32_t dataLength)
 165 {
 166     VERIFY_NON_NULL_VOID(sep, TAG, "sep is NULL");
 167     VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
 168
 169     OIC_LOG_V(DEBUG, TAG, "Address: %s, port:%d", sep->endpoint.addr, sep->endpoint.port);
 170
 171     if (g_networkPacketCallback)
 172     {
 173         g_networkPacketCallback(sep, data, dataLength);
 174     }
 175 }
 176
 177 void CAIPErrorHandler(const CAEndpoint_t *endpoint, const void *data,
 178                       uint32_t dataLength, CAResult_t result)
 179 {
 180     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
 181     VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
 182
 183     if (g_errorCallback)
 184     {
 185         g_errorCallback(endpoint, data, dataLength, result);
 186     }
 187 }
 188
 189 static void CAInitializeIPGlobals()
 190 {
 191     caglobals.ip.u6.fd  = -1;
 192     caglobals.ip.u6s.fd = -1;
 193     caglobals.ip.u4.fd  = -1;
 194     caglobals.ip.u4s.fd = -1;
 195     caglobals.ip.m6.fd  = -1;
 196     caglobals.ip.m6s.fd = -1;
 197     caglobals.ip.m4.fd  = -1;
 198     caglobals.ip.m4s.fd = -1;
 199     caglobals.ip.u6.port  = 0;
 200     caglobals.ip.u6s.port = 0;
 201     caglobals.ip.u4.port  = 0;
 202     caglobals.ip.u4s.port = 0;
 203     caglobals.ip.m6.port  = CA_COAP;
 204     caglobals.ip.m6s.port = CA_SECURE_COAP;
 205     caglobals.ip.m4.port  = CA_COAP;
 206     caglobals.ip.m4s.port = CA_SECURE_COAP;
 207
 208     CATransportFlags_t flags = 0;
 209     if (caglobals.client)
 210     {
 211         flags |= caglobals.clientFlags;
 212     }
 213     if (caglobals.server)
 214     {
 215         flags |= caglobals.serverFlags;
 216     }
 217     caglobals.ip.ipv6enabled = flags & CA_IPV6;
 218     caglobals.ip.ipv4enabled = flags & CA_IPV4;
 219     caglobals.ip.dualstack = caglobals.ip.ipv6enabled && caglobals.ip.ipv4enabled;
 220 }
 221
 222 CAResult_t CAInitializeIP(CARegisterConnectivityCallback registerCallback,
 223                           CANetworkPacketReceivedCallback networkPacketCallback,
 224                           CAAdapterChangeCallback netCallback,
 225                           CAErrorHandleCallback errorCallback, ca_thread_pool_t handle)
 226 {
 227     OIC_LOG(DEBUG, TAG, "IN");
 228     VERIFY_NON_NULL(registerCallback, TAG, "registerCallback");
 229     VERIFY_NON_NULL(networkPacketCallback, TAG, "networkPacketCallback");
 230     VERIFY_NON_NULL(netCallback, TAG, "netCallback");
 231 #ifndef SINGLE_THREAD
 232     VERIFY_NON_NULL(handle, TAG, "thread pool handle");
 233 #endif
 234
 235     g_networkChangeCallback = netCallback;
 236     g_networkPacketCallback = networkPacketCallback;
 237     g_errorCallback = errorCallback;
 238
 239     CAInitializeIPGlobals();
 240     caglobals.ip.threadpool = handle;
 241
 242     CAIPSetPacketReceiveCallback(CAIPPacketReceivedCB);
 243 #ifndef SINGLE_THREAD
 244     CAIPSetConnectionStateChangeCallback(CAIPConnectionStateCB);
 245 #endif
 246 #ifdef __WITH_DTLS__
 247     CAAdapterNetDtlsInit();
 248
 249     CADTLSSetAdapterCallbacks(CAIPPacketReceivedCB, CAIPPacketSendCB, 0);
 250 #endif
 251
 252     static const CAConnectivityHandler_t ipHandler =
 253         {
 254             .startAdapter = CAStartIP,
 255             .stopAdapter = CAStopIP,
 256             .startListenServer = CAStartIPListeningServer,
 257             .stopListenServer = CAStopIPListeningServer,
 258             .startDiscoveryServer = CAStartIPDiscoveryServer,
 259             .sendData = CASendIPUnicastData,
 260             .sendDataToAll = CASendIPMulticastData,
 261             .GetnetInfo = CAGetIPInterfaceInformation,
 262             .readData = CAReadIPData,
 263             .terminate = CATerminateIP,
 264             .cType = CA_ADAPTER_IP
 265         };
 266     registerCallback(ipHandler);
 267
 268     OIC_LOG(INFO, TAG, "OUT IntializeIP is Success");
 269     return CA_STATUS_OK;
 270 }
 271
 272 CAResult_t CAStartIP()
 273 {
 274     CAIPStartNetworkMonitor();
 275 #ifdef SINGLE_THREAD
 276     uint16_t unicastPort = 55555;
 277     // Address is hardcoded as we are using Single Interface
 278     CAResult_t ret = CAIPStartServer();
 279     if (CA_STATUS_OK != ret)
 280     {
 281         OIC_LOG_V(DEBUG, TAG, "CAIPStartServer failed[%d]", ret);
 282         return ret;
 283     }
 284 #else
 285     if (CA_STATUS_OK != CAIPInitializeQueueHandles())
 286     {
 287         OIC_LOG(ERROR, TAG, "Failed to Initialize Queue Handle");
 288         CATerminateIP();
 289         return CA_STATUS_FAILED;
 290     }
 291
 292     // Start send queue thread
 293     if (CA_STATUS_OK != CAQueueingThreadStart(g_sendQueueHandle))
 294     {
 295         OIC_LOG(ERROR, TAG, "Failed to Start Send Data Thread");
 296         return CA_STATUS_FAILED;
 297     }
 298
 299     CAResult_t ret = CAIPStartServer((const ca_thread_pool_t)caglobals.ip.threadpool);
 300     if (CA_STATUS_OK != ret)
 301     {
 302         OIC_LOG_V(ERROR, TAG, "Failed to start server![%d]", ret);
 303         return ret;
 304     }
 305
 306 #endif
 307
 308     return CA_STATUS_OK;
 309 }
 310
 311 CAResult_t CAStartIPListeningServer()
 312 {
 313     CAResult_t ret = CAIPStartListenServer();
 314     if (CA_STATUS_OK != ret)
 315     {
 316         OIC_LOG_V(ERROR, TAG, "Failed to start listening server![%d]", ret);
 317         return ret;
 318     }
 319
 320     return CA_STATUS_OK;
 321 }
 322
 323 CAResult_t CAStopIPListeningServer()
 324 {
 325     CAResult_t ret = CAIPStopListenServer();
 326     if (CA_STATUS_OK != ret)
 327     {
 328         OIC_LOG_V(ERROR, TAG, "Failed to stop listening server![%d]", ret);
 329     }
 330
 331     return ret;
 332 }
 333
 334 CAResult_t CAStartIPDiscoveryServer()
 335 {
 336     return CAStartIPListeningServer();
 337 }
 338
 339 static int32_t CAQueueIPData(bool isMulticast, const CAEndpoint_t *endpoint,
 340                              const void *data, uint32_t dataLength)
 341 {
 342     VERIFY_NON_NULL_RET(endpoint, TAG, "remoteEndpoint", -1);
 343     VERIFY_NON_NULL_RET(data, TAG, "data", -1);
 344
 345     if (0 == dataLength)
 346     {
 347         OIC_LOG(ERROR, TAG, "Invalid Data Length");
 348         return -1;
 349     }
 350
 351 #ifdef SINGLE_THREAD
 352
 353     CAIPSendData(endpoint, data, dataLength, isMulticast);
 354     return dataLength;
 355
 356 #else
 357
 358     VERIFY_NON_NULL_RET(g_sendQueueHandle, TAG, "sendQueueHandle", -1);
 359     // Create IPData to add to queue
 360     CAIPData_t *ipData = CACreateIPData(endpoint, data, dataLength, isMulticast);
 361     if (!ipData)
 362     {
 363         OIC_LOG(ERROR, TAG, "Failed to create ipData!");
 364         return -1;
 365     }
 366     // Add message to send queue
 367     CAQueueingThreadAddData(g_sendQueueHandle, ipData, sizeof(CAIPData_t));
 368
 369 #endif // SINGLE_THREAD
 370
 371     return dataLength;
 372 }
 373
 374 int32_t CASendIPUnicastData(const CAEndpoint_t *endpoint,
 375                             const void *data, uint32_t dataLength)
 376 {
 377     return CAQueueIPData(false, endpoint, data, dataLength);
 378 }
 379
 380 int32_t CASendIPMulticastData(const CAEndpoint_t *endpoint, const void *data, uint32_t dataLength)
 381 {
 382     return CAQueueIPData(true, endpoint, data, dataLength);
 383 }
 384
 385 CAResult_t CAReadIPData()
 386 {
 387     CAIPPullData();
 388     return CA_STATUS_OK;
 389 }
 390
 391 CAResult_t CAStopIP()
 392 {
 393 #ifdef __WITH_DTLS__
 394     CAAdapterNetDtlsDeInit();
 395 #endif
 396
 397 #ifndef SINGLE_THREAD
 398     if (g_sendQueueHandle && g_sendQueueHandle->threadMutex)
 399     {
 400         CAQueueingThreadStop(g_sendQueueHandle);
 401     }
 402 #endif
 403
 404     CAIPStopNetworkMonitor();
 405     CAIPStopServer();
 406     //Re-initializing the Globals to start them again
 407     CAInitializeIPGlobals();
 408
 409     return CA_STATUS_OK;
 410 }
 411
 412 void CATerminateIP()
 413 {
 414 #ifdef __WITH_DTLS__
 415     CADTLSSetAdapterCallbacks(NULL, NULL, 0);
 416 #endif
 417
 418     CAIPSetPacketReceiveCallback(NULL);
 419
 420 #ifndef SINGLE_THREAD
 421     CADeInitializeIPGlobals();
 422     CAIPDeinitializeQueueHandles();
 423 #endif
 424 }
 425
 426 #ifndef SINGLE_THREAD
 427
 428 void CAIPSendDataThread(void *threadData)
 429 {
 430     CAIPData_t *ipData = (CAIPData_t *) threadData;
 431     if (!ipData)
 432     {
 433         OIC_LOG(DEBUG, TAG, "Invalid ip data!");
 434         return;
 435     }
 436
 437     if (ipData->isMulticast)
 438     {
 439         //Processing for sending multicast
 440         OIC_LOG(DEBUG, TAG, "Send Multicast Data is called");
 441         CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, true);
 442     }
 443     else
 444     {
 445         //Processing for sending unicast
 446 #ifdef __WITH_DTLS__
 447         if (ipData->remoteEndpoint && ipData->remoteEndpoint->flags & CA_SECURE)
 448         {
 449             OIC_LOG(DEBUG, TAG, "CAAdapterNetDtlsEncrypt called!");
 450             CAResult_t result = CAAdapterNetDtlsEncrypt(ipData->remoteEndpoint,
 451                                                ipData->data, ipData->dataLen);
 452             if (CA_STATUS_OK != result)
 453             {
 454                 OIC_LOG(ERROR, TAG, "CAAdapterNetDtlsEncrypt failed!");
 455             }
 456             OIC_LOG_V(DEBUG, TAG,
 457                       "CAAdapterNetDtlsEncrypt returned with result[%d]", result);
 458         }
 459         else
 460         {
 461             OIC_LOG(DEBUG, TAG, "Send Unicast Data is called");
 462             CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, false);
 463         }
 464 #else
 465         CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, false);
 466 #endif
 467     }
 468 }
 469
 470 #endif
 471
 472 #ifndef SINGLE_THREAD
 473 CAIPData_t *CACreateIPData(const CAEndpoint_t *remoteEndpoint, const void *data,
 474                            uint32_t dataLength, bool isMulticast)
 475 {
 476     VERIFY_NON_NULL_RET(remoteEndpoint, TAG, "remoteEndpoint is NULL", NULL);
 477     VERIFY_NON_NULL_RET(data, TAG, "IPData is NULL", NULL);
 478
 479     CAIPData_t *ipData = (CAIPData_t *) OICMalloc(sizeof(*ipData));
 480     if (!ipData)
 481     {
 482         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 483         return NULL;
 484     }
 485
 486     ipData->remoteEndpoint = CACloneEndpoint(remoteEndpoint);
 487     ipData->data = (void *) OICMalloc(dataLength);
 488     if (!ipData->data)
 489     {
 490         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 491         CAFreeIPData(ipData);
 492         return NULL;
 493     }
 494
 495     memcpy(ipData->data, data, dataLength);
 496     ipData->dataLen = dataLength;
 497
 498     ipData->isMulticast = isMulticast;
 499
 500     return ipData;
 501 }
 502
 503 void CAFreeIPData(CAIPData_t *ipData)
 504 {
 505     VERIFY_NON_NULL_VOID(ipData, TAG, "ipData is NULL");
 506
 507     CAFreeEndpoint(ipData->remoteEndpoint);
 508     OICFree(ipData->data);
 509     OICFree(ipData);
 510 }
 511
 512 void CADataDestroyer(void *data, uint32_t size)
 513 {
 514     if (size < sizeof(CAIPData_t))
 515     {
 516         OIC_LOG_V(ERROR, TAG, "Destroy data too small %p %d", data, size);
 517     }
 518     CAIPData_t *etdata = (CAIPData_t *) data;
 519
 520     CAFreeIPData(etdata);
 521 }
 522
 523 #endif // SINGLE_THREAD