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