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 "ca_adapter_net_ssl.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     CAIPSetErrorHandler(CAIPErrorHandler);
 243     CAIPSetPacketReceiveCallback(CAIPPacketReceivedCB);
 244 #ifndef SINGLE_THREAD
 245     CAIPSetConnectionStateChangeCallback(CAIPConnectionStateCB);
 246 #endif
 247 #ifdef __WITH_DTLS__
 248     if (CA_STATUS_OK != CAinitSslAdapter())
 249     {
 250         OIC_LOG(ERROR, TAG, "Failed to init SSL adapter");
 251     }
 252     else
 253     {
 254         CAsetSslAdapterCallbacks(CAIPPacketReceivedCB, CAIPPacketSendCB, CA_ADAPTER_IP);
 255     }
 256 #endif
 257
 258     static const CAConnectivityHandler_t ipHandler =
 259         {
 260             .startAdapter = CAStartIP,
 261             .stopAdapter = CAStopIP,
 262             .startListenServer = CAStartIPListeningServer,
 263             .stopListenServer = CAStopIPListeningServer,
 264             .startDiscoveryServer = CAStartIPDiscoveryServer,
 265             .sendData = CASendIPUnicastData,
 266             .sendDataToAll = CASendIPMulticastData,
 267             .GetnetInfo = CAGetIPInterfaceInformation,
 268             .readData = CAReadIPData,
 269             .terminate = CATerminateIP,
 270             .cType = CA_ADAPTER_IP
 271         };
 272     registerCallback(ipHandler);
 273
 274     OIC_LOG(INFO, TAG, "OUT IntializeIP is Success");
 275     return CA_STATUS_OK;
 276 }
 277
 278 CAResult_t CAStartIP()
 279 {
 280     // Specific the port number received from application.
 281     caglobals.ip.u6.port  = caglobals.ports.udp.u6;
 282     caglobals.ip.u6s.port = caglobals.ports.udp.u6s;
 283     caglobals.ip.u4.port  = caglobals.ports.udp.u4;
 284     caglobals.ip.u4s.port = caglobals.ports.udp.u4s;
 285
 286     CAIPStartNetworkMonitor();
 287 #ifdef SINGLE_THREAD
 288     uint16_t unicastPort = 55555;
 289     // Address is hardcoded as we are using Single Interface
 290     CAResult_t ret = CAIPStartServer();
 291     if (CA_STATUS_OK != ret)
 292     {
 293         OIC_LOG_V(DEBUG, TAG, "CAIPStartServer failed[%d]", ret);
 294         return ret;
 295     }
 296 #else
 297     if (CA_STATUS_OK != CAIPInitializeQueueHandles())
 298     {
 299         OIC_LOG(ERROR, TAG, "Failed to Initialize Queue Handle");
 300         CATerminateIP();
 301         return CA_STATUS_FAILED;
 302     }
 303
 304     // Start send queue thread
 305     if (CA_STATUS_OK != CAQueueingThreadStart(g_sendQueueHandle))
 306     {
 307         OIC_LOG(ERROR, TAG, "Failed to Start Send Data Thread");
 308         return CA_STATUS_FAILED;
 309     }
 310
 311     CAResult_t ret = CAIPStartServer((const ca_thread_pool_t)caglobals.ip.threadpool);
 312     if (CA_STATUS_OK != ret)
 313     {
 314         OIC_LOG_V(ERROR, TAG, "Failed to start server![%d]", ret);
 315         return ret;
 316     }
 317
 318 #endif
 319
 320     return CA_STATUS_OK;
 321 }
 322
 323 CAResult_t CAStartIPListeningServer()
 324 {
 325     CAResult_t ret = CAIPStartListenServer();
 326     if (CA_STATUS_OK != ret)
 327     {
 328         OIC_LOG_V(ERROR, TAG, "Failed to start listening server![%d]", ret);
 329         return ret;
 330     }
 331
 332     return CA_STATUS_OK;
 333 }
 334
 335 CAResult_t CAStopIPListeningServer()
 336 {
 337     CAResult_t ret = CAIPStopListenServer();
 338     if (CA_STATUS_OK != ret)
 339     {
 340         OIC_LOG_V(ERROR, TAG, "Failed to stop listening server![%d]", ret);
 341     }
 342
 343     return ret;
 344 }
 345
 346 CAResult_t CAStartIPDiscoveryServer()
 347 {
 348     return CAStartIPListeningServer();
 349 }
 350
 351 static int32_t CAQueueIPData(bool isMulticast, const CAEndpoint_t *endpoint,
 352                              const void *data, uint32_t dataLength)
 353 {
 354     VERIFY_NON_NULL_RET(endpoint, TAG, "remoteEndpoint", -1);
 355     VERIFY_NON_NULL_RET(data, TAG, "data", -1);
 356
 357     if (0 == dataLength)
 358     {
 359         OIC_LOG(ERROR, TAG, "Invalid Data Length");
 360         return -1;
 361     }
 362
 363 #ifdef SINGLE_THREAD
 364
 365     CAIPSendData(endpoint, data, dataLength, isMulticast);
 366     return dataLength;
 367
 368 #else
 369
 370     VERIFY_NON_NULL_RET(g_sendQueueHandle, TAG, "sendQueueHandle", -1);
 371     // Create IPData to add to queue
 372     CAIPData_t *ipData = CACreateIPData(endpoint, data, dataLength, isMulticast);
 373     if (!ipData)
 374     {
 375         OIC_LOG(ERROR, TAG, "Failed to create ipData!");
 376         return -1;
 377     }
 378     // Add message to send queue
 379     CAQueueingThreadAddData(g_sendQueueHandle, ipData, sizeof(CAIPData_t));
 380
 381 #endif // SINGLE_THREAD
 382
 383     return dataLength;
 384 }
 385
 386 int32_t CASendIPUnicastData(const CAEndpoint_t *endpoint,
 387                             const void *data, uint32_t dataLength,
 388                             CADataType_t dataType)
 389 {
 390     (void)dataType;
 391     return CAQueueIPData(false, endpoint, data, dataLength);
 392 }
 393
 394 int32_t CASendIPMulticastData(const CAEndpoint_t *endpoint, const void *data, uint32_t dataLength,
 395                               CADataType_t dataType)
 396 {
 397     (void)dataType;
 398     return CAQueueIPData(true, endpoint, data, dataLength);
 399 }
 400
 401 CAResult_t CAReadIPData()
 402 {
 403     CAIPPullData();
 404     return CA_STATUS_OK;
 405 }
 406
 407 CAResult_t CAStopIP()
 408 {
 409 #ifdef __WITH_DTLS__
 410     CAdeinitSslAdapter();
 411 #endif
 412
 413 #ifndef SINGLE_THREAD
 414     if (g_sendQueueHandle && g_sendQueueHandle->threadMutex)
 415     {
 416         CAQueueingThreadStop(g_sendQueueHandle);
 417     }
 418 #endif
 419
 420     CAIPStopNetworkMonitor();
 421     CAIPStopServer();
 422     //Re-initializing the Globals to start them again
 423     CAInitializeIPGlobals();
 424
 425     return CA_STATUS_OK;
 426 }
 427
 428 void CATerminateIP()
 429 {
 430 #ifdef __WITH_DTLS__
 431     CAsetSslAdapterCallbacks(NULL, NULL, CA_ADAPTER_IP);
 432 #endif
 433
 434     CAIPSetPacketReceiveCallback(NULL);
 435
 436 #ifndef SINGLE_THREAD
 437     CADeInitializeIPGlobals();
 438     CAIPDeinitializeQueueHandles();
 439 #endif
 440 }
 441
 442 #ifndef SINGLE_THREAD
 443
 444 void CAIPSendDataThread(void *threadData)
 445 {
 446     CAIPData_t *ipData = (CAIPData_t *) threadData;
 447     if (!ipData)
 448     {
 449         OIC_LOG(DEBUG, TAG, "Invalid ip data!");
 450         return;
 451     }
 452
 453     if (ipData->isMulticast)
 454     {
 455         //Processing for sending multicast
 456         OIC_LOG(DEBUG, TAG, "Send Multicast Data is called");
 457         CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, true);
 458     }
 459     else
 460     {
 461         //Processing for sending unicast
 462 #ifdef __WITH_DTLS__
 463         if (ipData->remoteEndpoint && ipData->remoteEndpoint->flags & CA_SECURE)
 464         {
 465             OIC_LOG(DEBUG, TAG, "DTLS encrypt called");
 466             CAResult_t result = CAencryptSsl(ipData->remoteEndpoint, ipData->data, ipData->dataLen);
 467             if (CA_STATUS_OK != result)
 468             {
 469                 OIC_LOG(ERROR, TAG, "CAencryptSsl failed!");
 470             }
 471             OIC_LOG_V(DEBUG, TAG, "CAencryptSsl returned with result[%d]", result);
 472         }
 473         else
 474         {
 475             OIC_LOG(DEBUG, TAG, "Send Unicast Data is called");
 476             CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, false);
 477         }
 478 #else
 479         CAIPSendData(ipData->remoteEndpoint, ipData->data, ipData->dataLen, false);
 480 #endif
 481     }
 482 }
 483
 484 #endif
 485
 486 #ifndef SINGLE_THREAD
 487 CAIPData_t *CACreateIPData(const CAEndpoint_t *remoteEndpoint, const void *data,
 488                            uint32_t dataLength, bool isMulticast)
 489 {
 490     VERIFY_NON_NULL_RET(remoteEndpoint, TAG, "remoteEndpoint is NULL", NULL);
 491     VERIFY_NON_NULL_RET(data, TAG, "IPData is NULL", NULL);
 492
 493     CAIPData_t *ipData = (CAIPData_t *) OICMalloc(sizeof(*ipData));
 494     if (!ipData)
 495     {
 496         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 497         return NULL;
 498     }
 499
 500     ipData->remoteEndpoint = CACloneEndpoint(remoteEndpoint);
 501     ipData->data = (void *) OICMalloc(dataLength);
 502     if (!ipData->data)
 503     {
 504         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 505         CAFreeIPData(ipData);
 506         return NULL;
 507     }
 508
 509     memcpy(ipData->data, data, dataLength);
 510     ipData->dataLen = dataLength;
 511
 512     ipData->isMulticast = isMulticast;
 513
 514     return ipData;
 515 }
 516
 517 void CAFreeIPData(CAIPData_t *ipData)
 518 {
 519     VERIFY_NON_NULL_VOID(ipData, TAG, "ipData is NULL");
 520
 521     CAFreeEndpoint(ipData->remoteEndpoint);
 522     OICFree(ipData->data);
 523     OICFree(ipData);
 524 }
 525
 526 void CADataDestroyer(void *data, uint32_t size)
 527 {
 528     if (size < sizeof(CAIPData_t))
 529     {
 530         OIC_LOG_V(ERROR, TAG, "Destroy data too small %p %d", data, size);
 531     }
 532     CAIPData_t *etdata = (CAIPData_t *) data;
 533
 534     CAFreeIPData(etdata);
 535 }
 536
 537 #endif // SINGLE_THREAD