resource/csdk/connectivity/src/tcp_adapter/catcpadapter.c

   1 /* ****************************************************************
   2  *
   3  * Copyright 2015 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
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <stdint.h>
  25
  26 #include "catcpadapter.h"
  27 #include "catcpinterface.h"
  28 #include "caqueueingthread.h"
  29 #include "caadapterutils.h"
  30 #include "camutex.h"
  31 #include "uarraylist.h"
  32 #include "caremotehandler.h"
  33 #include "logger.h"
  34 #include "oic_malloc.h"
  35 #include "oic_string.h"
  36
  37 /**
  38  * Logging tag for module name.
  39  */
  40 #define TAG "TCP_ADAP"
  41
  42 /**
  43  * Holds internal thread TCP data information.
  44  */
  45 typedef struct
  46 {
  47     CAEndpoint_t *remoteEndpoint;
  48     void *data;
  49     size_t dataLen;
  50     bool isMulticast;
  51 } CATCPData;
  52
  53 #define CA_TCP_TIMEOUT 1000
  54
  55 #define CA_TCP_LISTEN_BACKLOG  3
  56
  57 /**
  58  * Queue handle for Send Data.
  59  */
  60 static CAQueueingThread_t *g_sendQueueHandle = NULL;
  61
  62 /**
  63  * Network Packet Received Callback to CA.
  64  */
  65 static CANetworkPacketReceivedCallback g_networkPacketCallback = NULL;
  66
  67 /**
  68  * Network Changed Callback to CA.
  69  */
  70 static CANetworkChangeCallback g_networkChangeCallback = NULL;
  71
  72 /**
  73  * error Callback to CA adapter.
  74  */
  75 static CAErrorHandleCallback g_errorCallback = NULL;
  76
  77 static void CATCPPacketReceivedCB(const CAEndpoint_t *endpoint,
  78                                   const void *data, size_t dataLength);
  79
  80 static CAResult_t CATCPInitializeQueueHandles();
  81
  82 static void CATCPDeinitializeQueueHandles();
  83
  84 static void CATCPSendDataThread(void *threadData);
  85
  86 static CATCPData *CACreateTCPData(const CAEndpoint_t *remoteEndpoint,
  87                                   const void *data, size_t dataLength,
  88                                   bool isMulticast);
  89 void CAFreeTCPData(CATCPData *ipData);
  90
  91 static void CADataDestroyer(void *data, size_t size);
  92
  93 CAResult_t CATCPInitializeQueueHandles()
  94 {
  95     OIC_LOG(DEBUG, TAG, "IN");
  96
  97     // Check if the message queue is already initialized
  98     if (g_sendQueueHandle)
  99     {
 100         OIC_LOG(DEBUG, TAG, "send queue handle is already initialized!");
 101         return CA_STATUS_OK;
 102     }
 103
 104     // Create send message queue
 105     g_sendQueueHandle = OICMalloc(sizeof(CAQueueingThread_t));
 106     if (!g_sendQueueHandle)
 107     {
 108         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 109         return CA_MEMORY_ALLOC_FAILED;
 110     }
 111
 112     if (CA_STATUS_OK != CAQueueingThreadInitialize(g_sendQueueHandle,
 113                                 (const ca_thread_pool_t)caglobals.tcp.threadpool,
 114                                 CATCPSendDataThread, CADataDestroyer))
 115     {
 116         OIC_LOG(ERROR, TAG, "Failed to Initialize send queue thread");
 117         OICFree(g_sendQueueHandle);
 118         g_sendQueueHandle = NULL;
 119         return CA_STATUS_FAILED;
 120     }
 121
 122     OIC_LOG(DEBUG, TAG, "OUT");
 123     return CA_STATUS_OK;
 124 }
 125
 126 void CATCPDeinitializeQueueHandles()
 127 {
 128     OIC_LOG(DEBUG, TAG, "IN");
 129
 130     CAQueueingThreadDestroy(g_sendQueueHandle);
 131     OICFree(g_sendQueueHandle);
 132     g_sendQueueHandle = NULL;
 133
 134     OIC_LOG(DEBUG, TAG, "OUT");
 135 }
 136
 137 void CATCPConnectionStateCB(const char *ipAddress, CANetworkStatus_t status)
 138 {
 139     (void)ipAddress;
 140     (void)status;
 141     OIC_LOG(DEBUG, TAG, "IN");
 142 }
 143
 144 void CATCPPacketReceivedCB(const CAEndpoint_t *endpoint, const void *data,
 145                            size_t dataLength)
 146 {
 147     OIC_LOG(DEBUG, TAG, "IN");
 148
 149     VERIFY_NON_NULL_VOID(endpoint, TAG, "ipAddress is NULL");
 150     VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
 151
 152     OIC_LOG_V(DEBUG, TAG, "Address: %s, port:%d", endpoint->addr, endpoint->port);
 153
 154     if (g_networkPacketCallback)
 155     {
 156         g_networkPacketCallback(endpoint, data, dataLength);
 157     }
 158     OIC_LOG(DEBUG, TAG, "OUT");
 159 }
 160
 161 void CATCPErrorHandler(const CAEndpoint_t *endpoint, const void *data,
 162                        size_t dataLength, CAResult_t result)
 163 {
 164     OIC_LOG(DEBUG, TAG, "IN");
 165
 166     VERIFY_NON_NULL_VOID(endpoint, TAG, "endpoint is NULL");
 167
 168     VERIFY_NON_NULL_VOID(data, TAG, "data is NULL");
 169
 170     if (g_errorCallback)
 171     {
 172         g_errorCallback(endpoint, data, dataLength, result);
 173     }
 174
 175     OIC_LOG(DEBUG, TAG, "OUT");
 176 }
 177
 178 static void CAInitializeTCPGlobals()
 179 {
 180     caglobals.tcp.selectTimeout = CA_TCP_TIMEOUT;
 181     caglobals.tcp.listenBacklog = CA_TCP_LISTEN_BACKLOG;
 182     caglobals.tcp.svrlist = NULL;
 183
 184     CATransportFlags_t flags = 0;
 185     if (caglobals.client)
 186     {
 187         flags |= caglobals.clientFlags;
 188     }
 189     if (caglobals.server)
 190     {
 191         flags |= caglobals.serverFlags;
 192     }
 193
 194     caglobals.tcp.ipv4tcpenabled = flags & CA_IPV4;
 195 }
 196
 197 CAResult_t CAInitializeTCP(CARegisterConnectivityCallback registerCallback,
 198                            CANetworkPacketReceivedCallback networkPacketCallback,
 199                            CANetworkChangeCallback netCallback,
 200                            CAErrorHandleCallback errorCallback, ca_thread_pool_t handle)
 201 {
 202     OIC_LOG(DEBUG, TAG, "IN");
 203     VERIFY_NON_NULL(registerCallback, TAG, "registerCallback");
 204     VERIFY_NON_NULL(networkPacketCallback, TAG, "networkPacketCallback");
 205     VERIFY_NON_NULL(netCallback, TAG, "netCallback");
 206     VERIFY_NON_NULL(handle, TAG, "thread pool handle");
 207
 208     g_networkChangeCallback = netCallback;
 209     g_networkPacketCallback = networkPacketCallback;
 210     g_errorCallback = errorCallback;
 211
 212     CAInitializeTCPGlobals();
 213     caglobals.tcp.threadpool = handle;
 214
 215     CATCPSetPacketReceiveCallback(CATCPPacketReceivedCB);
 216     CATCPSetErrorHandler(CATCPErrorHandler);
 217
 218     CAConnectivityHandler_t TCPHandler = {
 219         .startAdapter = CAStartTCP,
 220         .startListenServer = CAStartTCPListeningServer,
 221         .startDiscoveryServer = CAStartTCPDiscoveryServer,
 222         .sendData = CASendTCPUnicastData,
 223         .sendDataToAll = CASendTCPMulticastData,
 224         .GetnetInfo = CAGetTCPInterfaceInformation,
 225         .readData = CAReadTCPData,
 226         .stopAdapter = CAStopTCP,
 227         .terminate = CATerminateTCP };
 228     registerCallback(TCPHandler, CA_ADAPTER_TCP);
 229
 230     OIC_LOG(INFO, TAG, "OUT IntializeTCP is Success");
 231     return CA_STATUS_OK;
 232 }
 233
 234 CAResult_t CAStartTCP()
 235 {
 236     OIC_LOG(DEBUG, TAG, "IN");
 237
 238     if (CA_STATUS_OK != CATCPInitializeQueueHandles())
 239     {
 240         OIC_LOG(ERROR, TAG, "Failed to Initialize Queue Handle");
 241         CATerminateTCP();
 242         return CA_STATUS_FAILED;
 243     }
 244
 245     // Start send queue thread
 246     if (CA_STATUS_OK != CAQueueingThreadStart(g_sendQueueHandle))
 247     {
 248         OIC_LOG(ERROR, TAG, "Failed to Start Send Data Thread");
 249         return CA_STATUS_FAILED;
 250     }
 251
 252     CAResult_t ret = CATCPStartServer((const ca_thread_pool_t)caglobals.tcp.threadpool);
 253     if (CA_STATUS_OK != ret)
 254     {
 255         OIC_LOG_V(ERROR, TAG, "Failed to start server![%d]", ret);
 256         return ret;
 257     }
 258
 259     OIC_LOG(DEBUG, TAG, "OUT");
 260     return CA_STATUS_OK;
 261 }
 262
 263 CAResult_t CAStartTCPListeningServer()
 264 {
 265     OIC_LOG(DEBUG, TAG, "IN");
 266
 267     OIC_LOG(DEBUG, TAG, "OUT");
 268     return CA_STATUS_OK;
 269 }
 270
 271 CAResult_t CAStartTCPDiscoveryServer()
 272 {
 273     OIC_LOG(DEBUG, TAG, "IN");
 274
 275     OIC_LOG(DEBUG, TAG, "OUT");
 276     return CA_STATUS_OK;
 277 }
 278
 279 static size_t CAQueueTCPData(bool isMulticast, const CAEndpoint_t *endpoint,
 280                              const void *data, size_t dataLength)
 281 {
 282     OIC_LOG(DEBUG, TAG, "IN");
 283
 284     VERIFY_NON_NULL_RET(endpoint, TAG, "remoteEndpoint", -1);
 285     VERIFY_NON_NULL_RET(data, TAG, "data", -1);
 286
 287     if (0 == dataLength)
 288     {
 289         OIC_LOG(ERROR, TAG, "Invalid Data Length");
 290         return -1;
 291     }
 292
 293     VERIFY_NON_NULL_RET(g_sendQueueHandle, TAG, "sendQueueHandle", -1);
 294
 295     // Create TCPData to add to queue
 296     CATCPData *TCPData = CACreateTCPData(endpoint, data, dataLength, isMulticast);
 297     if (!TCPData)
 298     {
 299         OIC_LOG(ERROR, TAG, "Failed to create ipData!");
 300         return -1;
 301     }
 302     // Add message to send queue
 303     CAQueueingThreadAddData(g_sendQueueHandle, TCPData, sizeof(CATCPData));
 304
 305     OIC_LOG(DEBUG, TAG, "OUT");
 306     return dataLength;
 307 }
 308
 309 int32_t CASendTCPUnicastData(const CAEndpoint_t *endpoint,
 310                              const void *data, uint32_t dataLength)
 311 {
 312     OIC_LOG(DEBUG, TAG, "IN");
 313     return CAQueueTCPData(false, endpoint, data, dataLength);
 314 }
 315
 316 int32_t CASendTCPMulticastData(const CAEndpoint_t *endpoint,
 317                                const void *data, uint32_t dataLength)
 318 {
 319     OIC_LOG(DEBUG, TAG, "IN");
 320     return CAQueueTCPData(true, endpoint, data, dataLength);
 321 }
 322
 323 CAResult_t CAReadTCPData()
 324 {
 325     OIC_LOG(DEBUG, TAG, "IN");
 326     OIC_LOG(DEBUG, TAG, "OUT");
 327     return CA_STATUS_OK;
 328 }
 329
 330 CAResult_t CAStopTCP()
 331 {
 332     OIC_LOG(DEBUG, TAG, "IN");
 333
 334     if (g_sendQueueHandle && g_sendQueueHandle->threadMutex)
 335     {
 336         CAQueueingThreadStop(g_sendQueueHandle);
 337     }
 338
 339     CATCPDeinitializeQueueHandles();
 340
 341     CATCPStopServer();
 342
 343     OIC_LOG(DEBUG, TAG, "OUT");
 344     return CA_STATUS_OK;
 345 }
 346
 347 void CATerminateTCP()
 348 {
 349     OIC_LOG(DEBUG, TAG, "IN");
 350
 351     CATCPSetPacketReceiveCallback(NULL);
 352
 353     CATCPDeinitializeQueueHandles();
 354
 355     OIC_LOG(DEBUG, TAG, "OUT");
 356 }
 357
 358 void CATCPSendDataThread(void *threadData)
 359 {
 360     OIC_LOG(DEBUG, TAG, "IN");
 361
 362     CATCPData *TCPData = (CATCPData *) threadData;
 363     if (!TCPData)
 364     {
 365         OIC_LOG(DEBUG, TAG, "Invalid TCP data!");
 366         return;
 367     }
 368
 369     if (TCPData->isMulticast)
 370     {
 371         //Processing for sending multicast
 372         OIC_LOG(DEBUG, TAG, "Send Multicast Data is called, not supported");
 373         return;
 374     }
 375     else
 376     {
 377         //Processing for sending unicast
 378         CATCPSendData(TCPData->remoteEndpoint, TCPData->data, TCPData->dataLen, false);
 379     }
 380
 381     OIC_LOG(DEBUG, TAG, "OUT");
 382 }
 383
 384 CATCPData *CACreateTCPData(const CAEndpoint_t *remoteEndpoint, const void *data,
 385                            size_t dataLength, bool isMulticast)
 386 {
 387     VERIFY_NON_NULL_RET(data, TAG, "TCPData is NULL", NULL);
 388
 389     CATCPData *TCPData = (CATCPData *) OICMalloc(sizeof(CATCPData));
 390     if (!TCPData)
 391     {
 392         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 393         return NULL;
 394     }
 395
 396     TCPData->remoteEndpoint = CACloneEndpoint(remoteEndpoint);
 397     TCPData->data = (void *) OICMalloc(dataLength);
 398     if (!TCPData->data)
 399     {
 400         OIC_LOG(ERROR, TAG, "Memory allocation failed!");
 401         CAFreeTCPData(TCPData);
 402         return NULL;
 403     }
 404
 405     memcpy(TCPData->data, data, dataLength);
 406     TCPData->dataLen = dataLength;
 407
 408     TCPData->isMulticast = isMulticast;
 409
 410     return TCPData;
 411 }
 412
 413 void CAFreeTCPData(CATCPData *TCPData)
 414 {
 415     VERIFY_NON_NULL_VOID(TCPData, TAG, "TCPData is NULL");
 416
 417     CAFreeEndpoint(TCPData->remoteEndpoint);
 418     OICFree(TCPData->data);
 419     OICFree(TCPData);
 420 }
 421
 422 void CADataDestroyer(void *data, size_t size)
 423 {
 424     if (size < sizeof(CATCPData))
 425     {
 426         OIC_LOG_V(ERROR, TAG, "Destroy data too small %p %d", data, size);
 427     }
 428     CATCPData *TCPData = (CATCPData *) data;
 429
 430     CAFreeTCPData(TCPData);
 431 }