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         coap_pdu_t *pdu = NULL;
 109
 110         if (NULL != data->requestInfo)
 111         {
 112             OIC_LOG(DEBUG, TAG, "reqInfo avlbl");
 113
 114             pdu = (coap_pdu_t *)CAGeneratePDU(data->requestInfo->method, &data->requestInfo->info);
 115         }
 116         else if (NULL != data->responseInfo)
 117         {
 118             OIC_LOG(DEBUG, TAG, "resInfo avlbl");
 119
 120             pdu = (coap_pdu_t *)CAGeneratePDU(data->responseInfo->result, &data->responseInfo->info);
 121         }
 122         else
 123         {
 124             OIC_LOG(DEBUG, TAG, "request info, response info is empty");
 125         }
 126
 127         // interface controller function call.
 128         if (NULL != pdu)
 129         {
 130             CALogPDUInfo(pdu);
 131
 132             res = CASendUnicastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 133             if (CA_STATUS_OK != res)
 134             {
 135                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 136                 coap_delete_pdu(pdu);
 137                 return;
 138             }
 139             // for retransmission
 140             res = CARetransmissionSentData(&g_retransmissionContext, data->remoteEndpoint, pdu->hdr,
 141                                            pdu->length);
 142             if (CA_STATUS_OK != res)
 143             {
 144                 OIC_LOG_V(INFO, TAG, "retransmissions will not be working: %d", res);
 145                 coap_delete_pdu(pdu);
 146                 return;
 147             }
 148
 149             coap_delete_pdu(pdu);
 150         }
 151     }
 152     else if (SEND_TYPE_MULTICAST == type)
 153     {
 154         OIC_LOG(DEBUG, TAG, "both requestInfo & responseInfo is not available");
 155
 156         CAInfo_t *info = &data->requestInfo->info;
 157
 158         info->options = data->options;
 159         info->numOptions = data->numOptions;
 160
 161         coap_pdu_t *pdu = (coap_pdu_t *)CAGeneratePDU(CA_GET, info);
 162
 163         if (NULL != pdu)
 164         {
 165             CALogPDUInfo(pdu);
 166             res = CASendMulticastData(data->remoteEndpoint, pdu->hdr, pdu->length);
 167             if(CA_STATUS_OK != res)
 168             {
 169                 OIC_LOG_V(ERROR, TAG, "send failed:%d", res);
 170                 coap_delete_pdu(pdu);
 171                 return;
 172             }
 173             coap_delete_pdu(pdu);
 174         }
 175     }
 176
 177     OIC_LOG(DEBUG, TAG, "OUT");
 178 }
 179
 180 static void CAReceivedPacketCallback(CAEndpoint_t *endpoint, void *data, uint32_t dataLen)
 181 {
 182     OIC_LOG(DEBUG, TAG, "IN");
 183     VERIFY_NON_NULL_VOID(data, TAG, "data");
 184
 185     uint32_t code = CA_NOT_FOUND;
 186     coap_pdu_t *pdu = (coap_pdu_t *) CAParsePDU((const char *) data, dataLen, &code);
 187     OICFree(data);
 188     if (NULL == pdu)
 189     {
 190         OIC_LOG(ERROR, TAG, "Parse PDU failed");
 191         return;
 192     }
 193
 194     char uri[CA_MAX_URI_LENGTH] = { };
 195
 196     if (CA_GET == code || CA_POST == code || CA_PUT == code || CA_DELETE == code)
 197     {
 198         CARequestInfo_t *ReqInfo = (CARequestInfo_t *) OICCalloc(1, sizeof(CARequestInfo_t));
 199         if (NULL == ReqInfo)
 200         {
 201             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed!");
 202             coap_delete_pdu(pdu);
 203             return;
 204         }
 205
 206         CAResult_t res = CAGetRequestInfoFromPDU(pdu, ReqInfo);
 207         if (CA_STATUS_OK != res)
 208         {
 209             OIC_LOG_V(ERROR, TAG, "CAGetRequestInfoFromPDU failed : %d", res);
 210             OICFree(ReqInfo);
 211             coap_delete_pdu(pdu);
 212             return;
 213         }
 214
 215         if (NULL != ReqInfo->info.options)
 216         {
 217             for (uint32_t i = 0; i < ReqInfo->info.numOptions; i++)
 218             {
 219                 OIC_LOG_V(DEBUG, TAG, "optionID: %d", ReqInfo->info.options[i].optionID);
 220
 221                 OIC_LOG_V(DEBUG, TAG, "list: %s", ReqInfo->info.options[i].optionData);
 222             }
 223         }
 224
 225         if (NULL != ReqInfo->info.payload)
 226         {
 227             OIC_LOG_V(DEBUG, TAG, "Request- payload: %s", ReqInfo->info.payload);
 228         }
 229
 230         OIC_LOG_V(DEBUG, TAG, "code: %d", ReqInfo->method);
 231         OIC_LOG(DEBUG, TAG, "token:");
 232         OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *) ReqInfo->info.token, CA_MAX_TOKEN_LEN);
 233
 234         if (g_requestHandler)
 235         {
 236             g_requestHandler(endpoint, ReqInfo);
 237         }
 238
 239         CADestroyRequestInfoInternal(ReqInfo);
 240     }
 241     else
 242     {
 243         CAResponseInfo_t *ResInfo = (CAResponseInfo_t *) OICCalloc(1, sizeof(CAResponseInfo_t));
 244         if (NULL == ResInfo)
 245         {
 246             OIC_LOG(ERROR, TAG, "CAReceivedPacketCallback, Memory allocation failed!");
 247             coap_delete_pdu(pdu);
 248             return;
 249         }
 250
 251         CAResult_t res = CAGetResponseInfoFromPDU(pdu, ResInfo);
 252         if (CA_STATUS_OK != res)
 253         {
 254             OIC_LOG_V(ERROR, TAG, "CAGetResponseInfoFromPDU failed : %d", res);
 255             OICFree(ResInfo);
 256             coap_delete_pdu(pdu);
 257             return;
 258         }
 259
 260         if (NULL != ResInfo->info.options)
 261         {
 262             for (uint32_t i = 0; i < ResInfo->info.numOptions; i++)
 263             {
 264                 OIC_LOG_V(DEBUG, TAG, "optionID: %d", ResInfo->info.options[i].optionID);
 265
 266                 OIC_LOG_V(DEBUG, TAG, "list: %s", ResInfo->info.options[i].optionData);
 267             }
 268         }
 269
 270         if (NULL != ResInfo->info.payload)
 271         {
 272             OIC_LOG_V(DEBUG, TAG, "payload: %s", ResInfo->info.payload);
 273         }
 274         OIC_LOG_V(DEBUG, TAG, "code: %d", ResInfo->result);
 275
 276         // for retransmission
 277         void *retransmissionPdu = NULL;
 278         CARetransmissionReceivedData(&g_retransmissionContext, endpoint, pdu->hdr, pdu->length,
 279                                      &retransmissionPdu);
 280
 281         // get token from saved data in retransmission list
 282         if (retransmissionPdu && CA_EMPTY == code)
 283         {
 284             CAResult_t res = CAGetTokenFromPDU((const coap_hdr_t *)retransmissionPdu,
 285                                                &(ResInfo->info));
 286             if(CA_STATUS_OK != res)
 287             {
 288                 OIC_LOG(ERROR, TAG, "fail to get Token from retransmission list");
 289                 OICFree(ResInfo->info.token);
 290             }
 291         }
 292         OICFree(retransmissionPdu);
 293
 294         if (NULL != ResInfo)
 295         {
 296             if (g_responseHandler)
 297             {
 298                 g_responseHandler(endpoint, ResInfo);
 299             }
 300             CADestroyResponseInfoInternal(ResInfo);
 301         }
 302     }
 303
 304     if (pdu)
 305     {
 306         coap_delete_pdu(pdu);
 307     }
 308     OIC_LOG(DEBUG, TAG, "OUT");
 309 }
 310
 311 static void CANetworkChangedCallback(CAEndpoint_t *info, CANetworkStatus_t status)
 312 {
 313     OIC_LOG(DEBUG, TAG, "IN");
 314
 315     OIC_LOG(DEBUG, TAG, "OUT");
 316 }
 317
 318 void CAHandleRequestResponseCallbacks()
 319 {
 320     CAReadData();
 321     CARetransmissionBaseRoutine((void *)&g_retransmissionContext);
 322 }
 323
 324 CAResult_t CADetachRequestMessage(const CAEndpoint_t *object, const CARequestInfo_t *request)
 325 {
 326     OIC_LOG(DEBUG, TAG, "IN");
 327
 328     VERIFY_NON_NULL(object, TAG, "object");
 329     VERIFY_NON_NULL(request, TAG, "request");
 330
 331     // If max retransmission queue is reached, then don't handle new request
 332     if (CA_MAX_RT_ARRAY_SIZE == u_arraylist_length(g_retransmissionContext.dataList))
 333     {
 334         OIC_LOG(ERROR, TAG, "max RT queue size reached!");
 335         return CA_SEND_FAILED;
 336     }
 337
 338     // allocate & initialize
 339     CAData_t *data = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 340     CA_MEMORY_ALLOC_CHECK(data);
 341
 342     // save data
 343     data->type = request->isMulticast ? SEND_TYPE_MULTICAST : SEND_TYPE_UNICAST;
 344     data->remoteEndpoint = object;
 345     data->requestInfo = request;
 346     data->responseInfo = NULL;
 347
 348     CAProcessData(data);
 349     OICFree(data);
 350     OIC_LOG(DEBUG, TAG, "OUT");
 351     return CA_STATUS_OK;
 352
 353 // memory error label.
 354 memory_error_exit:
 355     OICFree(data);
 356     OIC_LOG(DEBUG, TAG, "OUT");
 357     return CA_MEMORY_ALLOC_FAILED;
 358 }
 359
 360 CAResult_t CADetachResponseMessage(const CAEndpoint_t *object,
 361                                    const CAResponseInfo_t *response)
 362 {
 363     OIC_LOG(DEBUG, TAG, "IN");
 364     VERIFY_NON_NULL(object, TAG, "object");
 365     VERIFY_NON_NULL(response, TAG, "response");
 366
 367     // allocate & initialize
 368     CAData_t *data = (CAData_t *) OICCalloc(1, sizeof(CAData_t));
 369     CA_MEMORY_ALLOC_CHECK(data);
 370
 371     // save data
 372     data->type = SEND_TYPE_UNICAST;
 373     data->remoteEndpoint = object;
 374     data->requestInfo = NULL;
 375     data->responseInfo = response;
 376
 377     CAProcessData(data);
 378
 379     OICFree(data);
 380     OIC_LOG(DEBUG, TAG, "OUT");
 381     return CA_STATUS_OK;
 382
 383 // memory error label.
 384 memory_error_exit:
 385     OICFree(data);
 386     OIC_LOG(DEBUG, TAG, "OUT");
 387
 388     return CA_MEMORY_ALLOC_FAILED;
 389 }
 390
 391 void CASetInterfaceCallbacks(CARequestCallback ReqHandler,
 392                 CAResponseCallback RespHandler, CAErrorCallback errorHandler)
 393 {
 394     OIC_LOG(DEBUG, TAG, "IN");
 395     g_requestHandler = ReqHandler;
 396     g_responseHandler = RespHandler;
 397     g_errorHandler = errorHandler;
 398     OIC_LOG(DEBUG, TAG, "OUT");
 399 }
 400
 401 CAResult_t CAInitializeMessageHandler()
 402 {
 403     OIC_LOG(DEBUG, TAG, "IN");
 404     CASetPacketReceivedCallback(CAReceivedPacketCallback);
 405
 406     CASetNetworkChangeCallback(CANetworkChangedCallback);
 407
 408     // retransmission initialize
 409     CARetransmissionInitialize(&g_retransmissionContext, NULL, CASendUnicastData,
 410                                CATimeoutCallback, NULL);
 411
 412     CAInitializeAdapters(NULL);
 413     OIC_LOG(DEBUG, TAG, "OUT");
 414     return CA_STATUS_OK;
 415 }
 416
 417 void CATerminateMessageHandler()
 418 {
 419     OIC_LOG(DEBUG, TAG, "IN");
 420     // terminate interface adapters by controller
 421     CATerminateAdapters();
 422
 423     // stop retransmission
 424     CARetransmissionStop(&g_retransmissionContext);
 425     CARetransmissionDestroy(&g_retransmissionContext);
 426
 427     OIC_LOG(DEBUG, TAG, "OUT");
 428 }
 429
 430 void CALogPDUInfo(coap_pdu_t *pdu)
 431 {
 432     VERIFY_NON_NULL_VOID(pdu, TAG, "pdu");
 433
 434     OIC_LOG_V(DEBUG, TAG, "PDU Maker - payload : %s", pdu->data);
 435
 436     OIC_LOG_V(DEBUG, TAG, "PDU Maker - type : %d", pdu->hdr->type);
 437
 438     OIC_LOG_V(DEBUG, TAG, "PDU Maker - code : %d", pdu->hdr->code);
 439
 440     OIC_LOG_V(DEBUG, TAG, "PDU Maker - id : %d", ntohs(pdu->hdr->id));
 441
 442     OIC_LOG(DEBUG, TAG, "PDU Maker - token :");
 443
 444     OIC_LOG_BUFFER(DEBUG, TAG, pdu->hdr->token, pdu->hdr->token_length);
 445 }
 446