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