resource/csdk/connectivity/src/camessagehandler_singlethread.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
  21 #include <stdio.h>
  22 #include <stdlib.h>
  23 #include <string.h>
  24 #include <stdint.h>
  25
  26 #include "cainterface.h"
  27 #include "camessagehandler_singlethread.h"
  28 #include "caremotehandler.h"
  29 #include "cainterfacecontroller.h"
  30 #include "caprotocolmessage.h"
  31 #include "caretransmission.h"
  32 #include "logger.h"
  33 #include "config.h" /* for coap protocol */
  34 #include "oic_malloc.h"
  35
  36 #define TAG "CAMH_ST"
  37
  38 #define CA_MAX_RT_ARRAY_SIZE    3
  39
  40 typedef enum
  41 {
  42     SEND_TYPE_MULTICAST = 0, SEND_TYPE_UNICAST
  43 } CASendDataType_t;
  44
  45 typedef struct
  46 {
  47     CASendDataType_t type;
  48     CAEndpoint_t *remoteEndpoint;
  49     CARequestInfo_t *requestInfo;
  50     CAResponseInfo_t *responseInfo;
  51     CAHeaderOption_t *options;
  52     uint8_t numOptions;
  53 } CAData_t;
  54
  55
  56 static CARetransmission_t g_retransmissionContext;
  57
  58 // handler field
  59 static CARequestCallback g_requestHandler = NULL;
  60 static CAResponseCallback g_responseHandler = NULL;
  61 static CAErrorCallback g_errorHandler = NULL;
  62
  63 static void CATimeoutCallback(const CAEndpoint_t *endpoint, const void *pdu, uint32_t size)
  64 {
  65     OIC_LOG(DEBUG, TAG, "IN");
  66     CAEndpoint_t* ep = CACloneEndpoint(endpoint);
  67     if (NULL == ep)
  68     {
  69         OIC_LOG(ERROR, TAG, "clone failed");
  70         return;
  71     }
  72
  73     CAResponseInfo_t* resInfo = (CAResponseInfo_t*) OICCalloc(1, sizeof(CAResponseInfo_t));
  74
  75     if (NULL == resInfo)
  76     {
  77         OIC_LOG(ERROR, TAG, "calloc failed");
  78         CAFreeEndpoint(ep);
  79         return;
  80     }
  81
  82     resInfo->result = CA_RETRANSMIT_TIMEOUT;
  83     resInfo->info.type = CAGetMessageTypeFromPduBinaryData(pdu, size);
  84     resInfo->info.messageId = CAGetMessageIdFromPduBinaryData(pdu, size);
  85
  86     if (g_responseHandler)
  87     {
  88         g_responseHandler(ep, resInfo);
  89     }
  90
  91     CAFreeEndpoint(ep);
  92     OICFree(resInfo);
  93
  94     OIC_LOG(DEBUG, TAG, "OUT");
  95 }
  96 static void CAProcessData(const CAData_t *data)
  97 {
  98     OIC_LOG(DEBUG, TAG, "IN");
  99     VERIFY_NON_NULL_VOID(data, TAG, "data");
 100     VERIFY_NON_NULL_VOID(data->remoteEndpoint, TAG, "remoteEndpoint");
 101
 102     CAResult_t res = CA_STATUS_FAILED;
 103
 104     CASendDataType_t type = data->type;
 105
 106     if (SEND_TYPE_UNICAST == type)
 107     {
 108         OIC_LOG(DEBUG,TAG,"Unicast Message");
 109         coap_pdu_t *pdu = NULL;
 110
 111         if (NULL != data->requestInfo)
 112         {
 113             OIC_LOG(DEBUG, TAG, "reqInfo avlbl");
 114
 115             pdu = (coap_pdu_t *)CAGeneratePDU(data->requestInfo->method, &data->requestInfo->info);
 116         }
 117         else if (NULL != data->responseInfo)
 118         {
 119             OIC_LOG(DEBUG, TAG, "resInfo avlbl");
 120
 121             pdu = (coap_pdu_t *)CAGeneratePDU(data->responseInfo->result, &data->responseInfo->info);
 122         }
 123         else
 124         {
 125             OIC_LOG(DEBUG, TAG, "request info, response info is empty");
 126             return;
 127         }
 128
 129         // interface controller function call.
 130         if (NULL != pdu)
 131         {
 132             CALogPDUInfo(pdu);
 133
 134             res = CASendUnicastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 135             if (CA_STATUS_OK != res)
 136             {
 137                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 138                 coap_delete_pdu(pdu);
 139                 return;
 140             }
 141             // for retransmission
 142             res = CARetransmissionSentData(&g_retransmissionContext, data->remoteEndpoint, pdu->hdr,
 143                                            pdu->length);
 144             if (CA_STATUS_OK != res)
 145             {
 146                 OIC_LOG_V(INFO, TAG, "retransmissions will not be working: %d", res);
 147                 coap_delete_pdu(pdu);
 148                 return;
 149             }
 150
 151             coap_delete_pdu(pdu);
 152         }
 153         else
 154         {
 155             OIC_LOG(ERROR,TAG, "Failed to Generate Unicast PDU");
 156             return;
 157         }
 158     }
 159     else if (SEND_TYPE_MULTICAST == type)
 160     {
 161         OIC_LOG(DEBUG,TAG,"Multicast Message");
 162         if (NULL != data->requestInfo)
 163         {
 164             OIC_LOG(DEBUG, TAG, "reqInfo avlbl");
 165
 166             CAInfo_t *info = &data->requestInfo->info;
 167
 168             info->options = data->options;
 169             info->numOptions = data->numOptions;
 170
 171             coap_pdu_t *pdu = (coap_pdu_t *)CAGeneratePDU(CA_GET, info);
 172
 173             if (NULL != pdu)
 174             {
 175                 CALogPDUInfo(pdu);
 176                 res = CASendMulticastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 177                 if(CA_STATUS_OK != res)
 178                 {
 179                     OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 180                     coap_delete_pdu(pdu);
 181                     return;
 182                 }
 183                 coap_delete_pdu(pdu);
 184             }
 185             else
 186             {
 187                 OIC_LOG(ERROR,TAG,"Failed to Generate Multicast PDU");
 188             }
 189         }
 190         else
 191         {
 192             OIC_LOG(ERROR,TAG,"requestInfo is empty");
 193         }
 194     }
 195
 196     OIC_LOG(DEBUG, TAG, "OUT");
 197 }
 198
 199 static void CAReceivedPacketCallback(CAEndpoint_t *endpoint, void *data, uint32_t dataLen)
 200 {
 201     OIC_LOG(DEBUG, TAG, "IN");
 202     VERIFY_NON_NULL_VOID(data, TAG, "data");
 203
 204     uint32_t code = CA_NOT_FOUND;
 205     coap_pdu_t *pdu = (coap_pdu_t *) CAParsePDU((const char *) data, dataLen, &code);
 206     OICFree(data);
 207     if (NULL == pdu)
 208     {
 209         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 210         return;
 211     }
 212
 213     char uri[CA_MAX_URI_LENGTH] = { };
 214
 215     if (CA_GET == code || CA_POST == code || CA_PUT == code || CA_DELETE == code)
 216     {
 217         CARequestInfo_t *ReqInfo = (CARequestInfo_t *) OICCalloc(1, sizeof(CARequestInfo_t));
 218         if (NULL == ReqInfo)
 219         {
 220             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed!");
 221             coap_delete_pdu(pdu);
 222             return;
 223         }
 224
 225         CAResult_t res = CAGetRequestInfoFromPDU(pdu, ReqInfo);
 226         if (CA_STATUS_OK != res)
 227         {
 228             OIC_LOG_V(ERROR, TAG, "CAGetRequestInfoFromPDU failed : %d", res);
 229             OICFree(ReqInfo);
 230             coap_delete_pdu(pdu);
 231             return;
 232         }
 233
 234         if (NULL != ReqInfo->info.options)
 235         {
 236             for (uint32_t i = 0; i < ReqInfo->info.numOptions; i++)
 237             {
 238                 OIC_LOG_V(DEBUG, TAG, "optionID: %d", ReqInfo->info.options[i].optionID);
 239
 240                 OIC_LOG_V(DEBUG, TAG, "list: %s", ReqInfo->info.options[i].optionData);
 241             }
 242         }
 243
 244         if (NULL != ReqInfo->info.payload)
 245         {
 246             OIC_LOG_V(DEBUG, TAG, "Request- payload: %s", ReqInfo->info.payload);
 247         }
 248
 249         OIC_LOG_V(DEBUG, TAG, "code: %d", ReqInfo->method);
 250         OIC_LOG(DEBUG, TAG, "token:");
 251         OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) ReqInfo->info.token, CA_MAX_TOKEN_LEN);
 252
 253         if (g_requestHandler)
 254         {
 255             g_requestHandler(endpoint, ReqInfo);
 256         }
 257
 258         CADestroyRequestInfoInternal(ReqInfo);
 259     }
 260     else
 261     {
 262         CAResponseInfo_t *ResInfo = (CAResponseInfo_t *) OICCalloc(1, sizeof(CAResponseInfo_t));
 263         if (NULL == ResInfo)
 264         {
 265             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed!");
 266             coap_delete_pdu(pdu);
 267             return;
 268         }
 269
 270         CAResult_t res = CAGetResponseInfoFromPDU(pdu, ResInfo);
 271         if (CA_STATUS_OK != res)
 272         {
 273             OIC_LOG_V(ERROR, TAG, "CAGetResponseInfoFromPDU failed : %d", res);
 274             OICFree(ResInfo);
 275             coap_delete_pdu(pdu);
 276             return;
 277         }
 278
 279         if (NULL != ResInfo->info.options)
 280         {
 281             for (uint32_t i = 0; i < ResInfo->info.numOptions; i++)
 282             {
 283                 OIC_LOG_V(DEBUG, TAG, "optionID: %d", ResInfo->info.options[i].optionID);
 284
 285                 OIC_LOG_V(DEBUG, TAG, "list: %s", ResInfo->info.options[i].optionData);
 286             }
 287         }
 288
 289         if (NULL != ResInfo->info.payload)
 290         {
 291             OIC_LOG_V(DEBUG, TAG, "payload: %s", ResInfo->info.payload);
 292         }
 293         OIC_LOG_V(DEBUG, TAG, "code: %d", ResInfo->result);
 294
 295         // for retransmission
 296         void *retransmissionPdu = NULL;
 297         CARetransmissionReceivedData(&g_retransmissionContext, endpoint, pdu->hdr, pdu->length,
 298                                      &retransmissionPdu);
 299
 300         // get token from saved data in retransmission list
 301         if (retransmissionPdu && CA_EMPTY == code)
 302         {
 303             CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *)retransmissionPdu,
 304                                                &(ResInfo->info));
 305             if(CA_STATUS_OK != res)
 306             {
 307                 OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 308                 OICFree(ResInfo->info.token);
 309             }
 310         }
 311         OICFree(retransmissionPdu);
 312
 313         if (NULL != ResInfo)
 314         {
 315             if (g_responseHandler)
 316             {
 317                 g_responseHandler(endpoint, ResInfo);
 318             }
 319             CADestroyResponseInfoInternal(ResInfo);
 320         }
 321     }
 322
 323     if (pdu)
 324     {
 325         coap_delete_pdu(pdu);
 326     }
 327     OIC_LOG(DEBUG, TAG, "OUT");
 328 }
 329
 330 static void CANetworkChangedCallback(CAEndpoint_t *info, CANetworkStatus_t status)
 331 {
 332     OIC_LOG(DEBUG, TAG, "IN");
 333
 334     OIC_LOG(DEBUG, TAG, "OUT");
 335 }
 336
 337 void CAHandleRequestResponseCallbacks()
 338 {
 339     CAReadData();
 340     CARetransmissionBaseRoutine((void *)&g_retransmissionContext);
 341 }
 342
 343 CAResult_t CADetachRequestMessage(const CAEndpoint_t *object, const CARequestInfo_t *request)
 344 {
 345     OIC_LOG(DEBUG, TAG, "IN");
 346
 347     VERIFY_NON_NULL(object, TAG, "object");
 348     VERIFY_NON_NULL(request, TAG, "request");
 349
 350     // If max retransmission queue is reached, then don't handle new request
 351     if (CA_MAX_RT_ARRAY_SIZE == u_arraylist_length(g_retransmissionContext.dataList))
 352     {
 353         OIC_LOG(ERROR, TAG, "max RT queue size reached!");
 354         return CA_SEND_FAILED;
 355     }
 356
 357     // allocate & initialize
 358     CAData_t *data = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 359     CA_MEMORY_ALLOC_CHECK(data);
 360
 361     // save data
 362     data->type = request->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 363     data->remoteEndpoint = object;
 364     data->requestInfo = request;
 365     data->responseInfo = NULL;
 366
 367     CAProcessData(data);
 368     OICFree(data);
 369     OIC_LOG(DEBUG, TAG, "OUT");
 370     return CA_STATUS_OK;
 371
 372 // memory error label.
 373 memory_error_exit:
 374     OICFree(data);
 375     OIC_LOG(DEBUG, TAG, "OUT");
 376     return CA_MEMORY_ALLOC_FAILED;
 377 }
 378
 379 CAResult_t CADetachResponseMessage(const CAEndpoint_t *object,
 380                                    const CAResponseInfo_t *response)
 381 {
 382     OIC_LOG(DEBUG, TAG, "IN");
 383     VERIFY_NON_NULL(object, TAG, "object");
 384     VERIFY_NON_NULL(response, TAG, "response");
 385
 386     // allocate & initialize
 387     CAData_t *data = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 388     CA_MEMORY_ALLOC_CHECK(data);
 389
 390     // save data
 391     data->type = SEND_TYPE_UNICAST;
 392     data->remoteEndpoint = object;
 393     data->requestInfo = NULL;
 394     data->responseInfo = response;
 395
 396     CAProcessData(data);
 397
 398     OICFree(data);
 399     OIC_LOG(DEBUG, TAG, "OUT");
 400     return CA_STATUS_OK;
 401
 402 // memory error label.
 403 memory_error_exit:
 404     OICFree(data);
 405     OIC_LOG(DEBUG, TAG, "OUT");
 406
 407     return CA_MEMORY_ALLOC_FAILED;
 408 }
 409
 410 void CASetInterfaceCallbacks(CARequestCallback ReqHandler,
 411                 CAResponseCallback RespHandler, CAErrorCallback errorHandler)
 412 {
 413     OIC_LOG(DEBUG, TAG, "IN");
 414     g_requestHandler = ReqHandler;
 415     g_responseHandler = RespHandler;
 416     g_errorHandler = errorHandler;
 417     OIC_LOG(DEBUG, TAG, "OUT");
 418 }
 419
 420 CAResult_t CAInitializeMessageHandler()
 421 {
 422     OIC_LOG(DEBUG, TAG, "IN");
 423     CASetPacketReceivedCallback(CAReceivedPacketCallback);
 424
 425     CASetNetworkChangeCallback(CANetworkChangedCallback);
 426
 427     // retransmission initialize
 428     CARetransmissionInitialize(&g_retransmissionContext, NULL, CASendUnicastData,
 429                                CATimeoutCallback, NULL);
 430
 431     CAInitializeAdapters(NULL);
 432     OIC_LOG(DEBUG, TAG, "OUT");
 433     return CA_STATUS_OK;
 434 }
 435
 436 void CATerminateMessageHandler()
 437 {
 438     OIC_LOG(DEBUG, TAG, "IN");
 439     // terminate interface adapters by controller
 440     CATerminateAdapters();
 441
 442     // stop retransmission
 443     CARetransmissionStop(&g_retransmissionContext);
 444     CARetransmissionDestroy(&g_retransmissionContext);
 445
 446     OIC_LOG(DEBUG, TAG, "OUT");
 447 }
 448
 449 void CALogPDUInfo(coap_pdu_t *pdu)
 450 {
 451     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
 452
 453     OIC_LOG_V(DEBUG, TAG, "PDU Maker - payload : %s", pdu->data);
 454
 455     OIC_LOG_V(DEBUG, TAG, "PDU Maker - type : %d", pdu->hdr->type);
 456
 457     OIC_LOG_V(DEBUG, TAG, "PDU Maker - code : %d", pdu->hdr->code);
 458
 459     OIC_LOG_V(DEBUG, TAG, "PDU Maker - id : %d", ntohs(pdu->hdr->id));
 460
 461     OIC_LOG(DEBUG, TAG, "PDU Maker - token :");
 462
 463     OIC_LOG_BUFFER(DEBUG, TAG, pdu->hdr->token, pdu->hdr->token_length);
 464 }
 465