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