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