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 #ifdef SINGLE_THREAD
 294     uint16_t unicastPort = 55555;
 295     // Address is hardcoded as we are using Single Interface
 296     CAResult_t ret = CAIPStartServer();
 297     if (CA_STATUS_OK != ret)
 298     {
 299         OIC_LOG_V(DEBUG, TAG, "CAIPStartServer failed[%d]", ret);
 300         return ret;
 301     }
 302 #else
 303     if (CA_STATUS_OK != CAIPInitializeQueueHandles())
 304     {
 305         OIC_LOG(ERROR, TAG, "Failed to Initialize Queue Handle");
 306         CATerminateIP();
 307         return CA_STATUS_FAILED;
 308     }
 309
 310     // Start send queue thread
 311     if (CA_STATUS_OK != CAQueueingThreadStart(g_sendQueueHandle))
 312     {
 313         OIC_LOG(ERROR, TAG, "Failed to Start Send Data Thread");
 314         return CA_STATUS_FAILED;
 315     }
 316
 317     CAResult_t ret = CAIPStartServer((const ca_thread_pool_t)caglobals.ip.threadpool);
 318     if (CA_STATUS_OK != ret)
 319     {
 320         OIC_LOG_V(ERROR, TAG, "Failed to start server![%d]", ret);
 321         return ret;
 322     }
 323
 324 #endif
 325
 326     OIC_LOG(DEBUG, TAG, "OUT");
 327     return CA_STATUS_OK;
 328 }
 329
 330 CAResult_t CAStartIPListeningServer()
 331 {
 332     OIC_LOG(DEBUG, TAG, "IN");
 333
 334     OIC_LOG(DEBUG, TAG, "OUT");
 335     return CA_STATUS_OK;
 336 }
 337
 338 CAResult_t CAStartIPDiscoveryServer()
 339 {
 340     OIC_LOG(DEBUG, TAG, "IN");
 341     return CAStartIPListeningServer();
 342 }
 343
 344 static int32_t CAQueueIPData(bool isMulticast, const CAEndpoint_t *endpoint,
 345                             const void *data, uint32_t dataLength)
 346 {
 347     OIC_LOG(DEBUG, TAG, "IN");
 348
 349     VERIFY_NON_NULL_RET(endpoint, TAG, "remoteEndpoint", -1);
 350     VERIFY_NON_NULL_RET(data, TAG, "data", -1);
 351
 352     if (0 == dataLength)
 353     {
 354         OIC_LOG(ERROR, TAG, "Invalid Data Length");
 355         return -1;
 356     }
 357
 358 #ifdef SINGLE_THREAD
 359
 360     CAIPSendData(endpoint, data, dataLength, isMulticast);
 361     return dataLength;
 362
 363 #else
 364
 365     VERIFY_NON_NULL_RET(g_sendQueueHandle, TAG, "sendQueueHandle", -1);
 366     // Create IPData to add to queue
 367     CAIPData *ipData = CACreateIPData(endpoint, data, dataLength, isMulticast);
 368     if (!ipData)
 369     {
 370         OIC_LOG(ERROR, TAG, "Failed to create ipData!");
 371         return -1;
 372     }
 373     // Add message to send queue
 374     CAQueueingThreadAddData(g_sendQueueHandle, ipData, sizeof(CAIPData));
 375
 376 #endif // SINGLE_THREAD
 377
 378     OIC_LOG(DEBUG, TAG, "OUT");
 379     return dataLength;
 380 }
 381
 382 int32_t CASendIPUnicastData(const CAEndpoint_t *endpoint,
 383                             const void *data, uint32_t dataLength)
 384 {
 385     OIC_LOG(DEBUG, TAG, "IN");
 386     return CAQueueIPData(false, endpoint, data, dataLength);
 387 }
 388
 389 int32_t CASendIPMulticastData(const CAEndpoint_t *endpoint, const void *data, uint32_t dataLength)
 390 {
 391     OIC_LOG(DEBUG, TAG, "IN");
 392     return CAQueueIPData(true, endpoint, data, dataLength);
 393 }
 394
 395 CAResult_t CAReadIPData()
 396 {
 397     OIC_LOG(DEBUG, TAG, "IN");
 398     CAIPPullData();
 399     OIC_LOG(DEBUG, TAG, "OUT");
 400     return CA_STATUS_OK;
 401 }
 402
 403 CAResult_t CAStopIP()
 404 {
 405     OIC_LOG(DEBUG, TAG, "IN");
 406
 407 #ifdef __WITH_DTLS__
 408     CAAdapterNetDtlsDeInit();
 409 #endif
 410
 411 #ifndef SINGLE_THREAD
 412     if (g_sendQueueHandle && g_sendQueueHandle->threadMutex)
 413     {
 414         CAQueueingThreadStop(g_sendQueueHandle);
 415     }
 416
 417     CAIPDeinitializeQueueHandles();
 418 #endif
 419
 420     CAIPStopServer();
 421
 422     OIC_LOG(DEBUG, TAG, "OUT");
 423     return CA_STATUS_OK;
 424 }
 425
 426 void CATerminateIP()
 427 {
 428     OIC_LOG(DEBUG, TAG, "IN");
 429
 430 #ifdef __WITH_DTLS__
 431     CADTLSSetAdapterCallbacks(NULL, NULL, 0);
 432 #endif
 433
 434     CAIPSetPacketReceiveCallback(NULL);
 435
 436 #ifndef SINGLE_THREAD
 437     CAIPDeinitializeQueueHandles();
 438 #endif
 439
 440     OIC_LOG(DEBUG, TAG, "OUT");
 441 }
 442
 443 #ifndef SINGLE_THREAD
 444
 445 void CAIPSendDataThread(void *threadData)
 446 {
 447     OIC_LOG(DEBUG, TAG, "IN");
 448
 449     CAIPData *ipData = (CAIPData *) threadData;
 450     if (!ipData)
 451     {
 452         OIC_LOG(DEBUG, TAG, "Invalid ip data!");
 453         return;
 454     }
 455
 456     if (ipData->isMulticast)
 457     {
 458         //Processing for sending multicast
 459         OIC_LOG(DEBUG, TAG, "Send Multicast Data is called");
 460         CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, true);
 461     }
 462     else
 463     {
 464         //Processing for sending unicast
 465 #ifdef __WITH_DTLS__
 466         if (ipData->remoteEndpoint->flags & CA_SECURE)
 467         {
 468             OIC_LOG(DEBUG, TAG, "CAAdapterNetDtlsEncrypt called!");
 469             CAResult_t result = CAAdapterNetDtlsEncrypt(ipData->remoteEndpoint,
 470                                                ipData->data, ipData->dataLen);
 471             if (CA_STATUS_OK != result)
 472             {
 473                 OIC_LOG(ERROR, TAG, "CAAdapterNetDtlsEncrypt failed!");
 474             }
 475             OIC_LOG_V(DEBUG, TAG,
 476                       "CAAdapterNetDtlsEncrypt returned with result[%d]", result);
 477         }
 478         else
 479         {
 480             OIC_LOG(DEBUG, TAG, "Send Unicast Data is called");
 481             CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, false);
 482         }
 483 #else
 484         CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, false);
 485 #endif
 486     }
 487
 488     OIC_LOG(DEBUG, TAG, "OUT");
 489 }
 490
 491 #endif
 492
 493 #ifndef SINGLE_THREAD
 494
 495 CAIPData *CACreateIPData(const CAEndpoint_t *remoteEndpoint, const void *data,
 496                                      uint32_t dataLength, bool isMulticast)
 497 {
 498     VERIFY_NON_NULL_RET(data, TAG, "IPData is NULL", NULL);
 499
 500     CAIPData *ipData = (CAIPData *) OICMalloc(sizeof(CAIPData));
 501     if (!ipData)
 502     {
 503         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 504         return NULL;
 505     }
 506
 507     ipData->remoteEndpoint = CACloneEndpoint(remoteEndpoint);
 508     ipData->data = (void *) OICMalloc(dataLength);
 509     if (!ipData->data)
 510     {
 511         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 512         CAFreeIPData(ipData);
 513         return NULL;
 514     }
 515
 516     memcpy(ipData->data, data, dataLength);
 517     ipData->dataLen = dataLength;
 518
 519     ipData->isMulticast = isMulticast;
 520
 521     return ipData;
 522 }
 523
 524 void CAFreeIPData(CAIPData *ipData)
 525 {
 526     VERIFY_NON_NULL_VOID(ipData, TAG, "ipData is NULL");
 527
 528     CAFreeEndpoint(ipData->remoteEndpoint);
 529     OICFree(ipData->data);
 530     OICFree(ipData);
 531 }
 532
 533 void CADataDestroyer(void *data, uint32_t size)
 534 {
 535     if (size < sizeof(CAIPData))
 536     {
 537         OIC_LOG_V(ERROR, TAG, "Destroy data too small %p %d", data, size);
 538     }
 539     CAIPData *etdata = (CAIPData *) data;
 540
 541     CAFreeIPData(etdata);
 542 }
 543
 544 #endif // SINGLE_THREAD