resource/csdk/security/src/directpairing.c

   1 /* *****************************************************************\r
   2  *\r
   3  * Copyright 2016 Samsung Electronics All Rights Reserved.\r
   4  *\r
   5  *\r
   6  *\r
   7  * Licensed under the Apache License, Version 2.0 (the "License");\r
   8  * you may not use this file except in compliance with the License.\r
   9  * You may obtain a copy of the License at\r
  10  *\r
  11  *     http://www.apache.org/licenses/LICENSE-2.0\r
  12  *\r
  13  * Unless required by applicable law or agreed to in writing, software\r
  14  * distributed under the License is distributed on an "AS IS" BASIS,\r
  15  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.\r
  16  * See the License for the specific language governing permissions and\r
  17  * limitations under the License.\r
  18  *\r
  19  * *****************************************************************/\r
  20 #ifndef _POSIX_C_SOURCE\r
  21 #define _POSIX_C_SOURCE 200112L\r
  22 #endif\r
  23 #ifdef HAVE_UNISTD_H\r
  24 #include <unistd.h>\r
  25 #endif\r
  26 #ifdef HAVE_TIME_H\r
  27 #include <time.h>\r
  28 #endif\r
  29 #ifdef HAVE_SYS_TIME_H\r
  30 #include <sys/time.h>\r
  31 #endif\r
  32 #ifdef HAVE_STRING_H\r
  33 #include <string.h>\r
  34 #endif\r
  35 \r
  36 #include "ocstack.h"\r
  37 #include "oic_malloc.h"\r
  38 #include "oic_string.h"\r
  39 #include "logger.h"\r
  40 #include "cJSON.h"\r
  41 #include "utlist.h"\r
  42 #include "ocpayload.h"\r
  43 #include "payload_logging.h"\r
  44 #include "cainterface.h"\r
  45 \r
  46 #include "directpairing.h"\r
  47 #include "srmresourcestrings.h" //@note: SRM's internal header\r
  48 #include "doxmresource.h"       //@note: SRM's internal header\r
  49 #include "pconfresource.h"       //@note: SRM's internal header\r
  50 #include "dpairingresource.h"       //@note: SRM's internal header\r
  51 #include "credresource.h"\r
  52 \r
  53 #include "pmtypes.h"\r
  54 #include "pmutility.h"\r
  55 \r
  56 #include "srmutility.h"\r
  57 \r
  58 #ifdef __WITH_DTLS__\r
  59 #include "global.h"\r
  60 #endif\r
  61 \r
  62 \r
  63 #define TAG ("DP")\r
  64 static const uint16_t CBOR_SIZE = 1024;\r
  65 \r
  66 /**\r
  67  * Structure to carry direct-pairing API data to callback.\r
  68  */\r
  69 typedef struct DPairData\r
  70 {\r
  71     OCDirectPairingDev_t        *peer;                         /**< Pointer to pairing target info.**/\r
  72     char                                  pin[DP_PIN_LENGTH];  /**< PIN **/\r
  73     OCDirectPairingResultCB    resultCallback;           /**< Pointer to result callback.**/\r
  74     void *userCtx;                                      /** < user context to pass in callback **/\r
  75 } DPairData_t;\r
  76 \r
  77 static OCDirectPairingDev_t *g_dp_paired = NULL;\r
  78 static OCDirectPairingDev_t *g_dp_discover = NULL;\r
  79 static DPairData_t *g_dp_proceed_ctx = NULL;\r
  80 \r
  81 \r
  82 /**\r
  83  * Function to search node in linked list that matches given IP and port.\r
  84  *\r
  85  * @param[in] pList         List of OCProvisionDev_t.\r
  86  * @param[in] addr          address of target device.\r
  87  * @param[in] port          port of remote server.\r
  88  *\r
  89  * @return pointer of OCProvisionDev_t if exist, otherwise NULL\r
  90  */\r
  91 OCDirectPairingDev_t* getDev(OCDirectPairingDev_t **ppList, const char* addr, const uint16_t port)\r
  92 {\r
  93     if(NULL == addr)\r
  94     {\r
  95         OIC_LOG_V(ERROR, TAG, "Invalid Input parameters in [%s]\n", __FUNCTION__);\r
  96         return NULL;\r
  97     }\r
  98 \r
  99     OCDirectPairingDev_t *ptr = NULL;\r
 100     LL_FOREACH(*ppList, ptr)\r
 101     {\r
 102         if( strcmp(ptr->endpoint.addr, addr) == 0 && port == ptr->endpoint.port)\r
 103         {\r
 104             return ptr;\r
 105         }\r
 106     }\r
 107 \r
 108     return NULL;\r
 109 }\r
 110 \r
 111 \r
 112 \r
 113 /**\r
 114  * Add device information to list.\r
 115  *\r
 116  * @param[in] pList         List of OCProvisionDev_t.\r
 117  * @param[in] addr          address of target device.\r
 118  * @param[in] port          port of remote server.\r
 119  * @param[in] adapter       adapter type of endpoint.\r
 120  * @param[in] doxm          pointer to doxm instance.\r
 121  * @param[in] connType  connectivity type of endpoint\r
 122  *\r
 123  * @return OC_STACK_OK for success and errorcode otherwise.\r
 124  */\r
 125 OCStackResult addDev(OCDirectPairingDev_t **ppList, OCDevAddr *endpoint,\r
 126                                       OCConnectivityType conn, OicSecPconf_t *pconf)\r
 127 {\r
 128     if(NULL == endpoint || NULL == pconf)\r
 129     {\r
 130         OIC_LOG_V(ERROR, TAG, "Invalid Input parameters in [%s]\n", __FUNCTION__);\r
 131         return OC_STACK_INVALID_PARAM;\r
 132     }\r
 133 \r
 134     OCDirectPairingDev_t *ptr = getDev(ppList, endpoint->addr, endpoint->port);\r
 135     if(!ptr)\r
 136     {\r
 137         ptr = (OCDirectPairingDev_t *)OICCalloc(1, sizeof (OCDirectPairingDev_t));\r
 138         if (NULL == ptr)\r
 139         {\r
 140             OIC_LOG(ERROR, TAG, "Error while allocating memory for linkedlist node !!");\r
 141             return OC_STACK_NO_MEMORY;\r
 142         }\r
 143 \r
 144         memcpy(&ptr->endpoint, endpoint, sizeof(OCDevAddr));\r
 145         ptr->connType = conn;\r
 146         ptr->securePort = DEFAULT_SECURE_PORT;\r
 147         ptr->edp = pconf->edp;\r
 148         ptr->prm = pconf->prm;\r
 149         pconf->prm = NULL;  // to prevent free\r
 150         ptr->prmLen = pconf->prmLen;\r
 151         memcpy(&ptr->deviceID, &pconf->deviceID, sizeof(OicUuid_t));\r
 152         memcpy(&ptr->rowner, &pconf->rownerID, sizeof(OicUuid_t));\r
 153         ptr->next = NULL;\r
 154 \r
 155         LL_PREPEND(*ppList, ptr);\r
 156         OIC_LOG(INFO, TAG, "device added !");\r
 157     }\r
 158 \r
 159     return OC_STACK_OK;\r
 160 }\r
 161 \r
 162 \r
 163 /**\r
 164  * Add device information to list.\r
 165  *\r
 166  * @param[in] ppList         List of OCProvisionDev_t.\r
 167  * @param[in] pDev          target device.\r
 168  *\r
 169  * @return OC_STACK_OK for success and errorcode otherwise.\r
 170  */\r
 171 OCStackResult addDev2(OCDirectPairingDev_t **ppList, OCDirectPairingDev_t *pDev)\r
 172 {\r
 173     if(NULL == pDev)\r
 174     {\r
 175         OIC_LOG_V(ERROR, TAG, "Invalid Input parameters in [%s]\n", __FUNCTION__);\r
 176         return OC_STACK_INVALID_PARAM;\r
 177     }\r
 178 \r
 179     OCDirectPairingDev_t *ptr = getDev(ppList, pDev->endpoint.addr, pDev->endpoint.port);\r
 180     if(!ptr)\r
 181     {\r
 182         ptr = (OCDirectPairingDev_t *)OICCalloc(1, sizeof (OCDirectPairingDev_t));\r
 183         if (NULL == ptr)\r
 184         {\r
 185             OIC_LOG(ERROR, TAG, "Error while allocating memory for linkedlist node !!");\r
 186             return OC_STACK_NO_MEMORY;\r
 187         }\r
 188 \r
 189         memcpy(&ptr->endpoint, &pDev->endpoint, sizeof(OCDevAddr));\r
 190         ptr->connType = pDev->connType;\r
 191         ptr->securePort = pDev->securePort;\r
 192         ptr->edp = pDev->edp;\r
 193         ptr->prmLen = pDev->prmLen;\r
 194         ptr->prm = (OicSecPrm_t*)OICCalloc(ptr->prmLen, sizeof (OicSecPrm_t));\r
 195         if (NULL == ptr->prm)\r
 196         {\r
 197             OIC_LOG(ERROR, TAG, "Error while allocating memory for prm !!");\r
 198             return OC_STACK_NO_MEMORY;\r
 199         }\r
 200         memcpy(ptr->prm, pDev->prm, sizeof(OicSecPrm_t)*ptr->prmLen);\r
 201         memcpy(&ptr->deviceID, &pDev->deviceID, sizeof(OicUuid_t));\r
 202         memcpy(&ptr->rowner, &pDev->rowner, sizeof(OicUuid_t));\r
 203         ptr->next = NULL;\r
 204 \r
 205         LL_PREPEND(*ppList, ptr);\r
 206         OIC_LOG(INFO, TAG, "device added !");\r
 207     }\r
 208 \r
 209     return OC_STACK_OK;\r
 210 }\r
 211 \r
 212 \r
 213 \r
 214 /**\r
 215  * This function deletes list of provision target devices\r
 216  *\r
 217  * @param[in] pDevicesList         List of OCProvisionDev_t.\r
 218  */\r
 219 void delList(OCDirectPairingDev_t *pList)\r
 220 {\r
 221     if(pList)\r
 222     {\r
 223         OCDirectPairingDev_t *del = NULL, *tmp = NULL;\r
 224         LL_FOREACH_SAFE(pList, del, tmp)\r
 225         {\r
 226             LL_DELETE(pList, del);\r
 227             if (del && del->prm)\r
 228             {\r
 229                 OICFree(del->prm);\r
 230             }\r
 231         }\r
 232     }\r
 233 }\r
 234 \r
 235 bool DPGenerateQuery(bool isSecure,\r
 236                      const char* address, const uint16_t port,\r
 237                      const OCConnectivityType connType,\r
 238                      char* buffer, size_t bufferSize, const char* uri)\r
 239 {\r
 240     if(!address || !buffer || !uri)\r
 241     {\r
 242         OIC_LOG(ERROR, TAG, "DPGenerateQuery : Invalid parameters.");\r
 243         return false;\r
 244     }\r
 245 \r
 246     static char QPREFIX_COAP[] =  "coap://";\r
 247     static char QPREFIX_COAPS[] = "coaps://";\r
 248 \r
 249     int snRet = 0;\r
 250     char* prefix = (isSecure == true) ? QPREFIX_COAPS : QPREFIX_COAP;\r
 251 \r
 252     switch(connType & CT_MASK_ADAPTER)\r
 253     {\r
 254         case CT_ADAPTER_IP:\r
 255             switch(connType & CT_MASK_FLAGS & ~CT_FLAG_SECURE)\r
 256             {\r
 257                 case CT_IP_USE_V4:\r
 258                         snRet = snprintf(buffer, bufferSize, "%s%s:%d%s",\r
 259                                          prefix, address, port, uri);\r
 260                     break;\r
 261                 case CT_IP_USE_V6:\r
 262                         snRet = snprintf(buffer, bufferSize, "%s[%s]:%d%s",\r
 263                                          prefix, address, port, uri);\r
 264                     break;\r
 265                 default:\r
 266                     OIC_LOG(ERROR, TAG, "Unknown address format.");\r
 267                     return false;\r
 268             }\r
 269             // snprintf return value check\r
 270             if (snRet < 0)\r
 271             {\r
 272                 OIC_LOG_V(ERROR, TAG, "DPGenerateQuery : Error (snprintf) %d\n", snRet);\r
 273                 return false;\r
 274             }\r
 275             else if ((size_t)snRet >= bufferSize)\r
 276             {\r
 277                 OIC_LOG_V(ERROR, TAG, "DPGenerateQuery : Truncated (snprintf) %d\n", snRet);\r
 278                 return false;\r
 279             }\r
 280 \r
 281             break;\r
 282 #ifndef WITH_ARDUINO\r
 283         // TODO: We need to verify tinyDTLS in below cases\r
 284         case CT_ADAPTER_GATT_BTLE:\r
 285         case CT_ADAPTER_RFCOMM_BTEDR:\r
 286             OIC_LOG(ERROR, TAG, "Not supported connectivity adapter.");\r
 287             return false;\r
 288             break;\r
 289 #endif\r
 290         default:\r
 291             OIC_LOG(ERROR, TAG, "Unknown connectivity adapter.");\r
 292             return false;\r
 293     }\r
 294 \r
 295     return true;\r
 296 }\r
 297 \r
 298 const OCDirectPairingDev_t* DPGetDiscoveredDevices()\r
 299 {\r
 300     return g_dp_discover;\r
 301 }\r
 302 \r
 303 const OCDirectPairingDev_t* DPGetPairedDevices()\r
 304 {\r
 305     return g_dp_paired;\r
 306 }\r
 307 \r
 308 void DPDeleteLists()\r
 309 {\r
 310     delList(g_dp_discover);\r
 311     delList(g_dp_paired);\r
 312 }\r
 313 \r
 314 /**\r
 315  * Callback handler of FinalizeDirectPairing.\r
 316  *\r
 317  * @param[in] ctx             ctx value passed to callback from calling function.\r
 318  * @param[in] UNUSED          handle to an invocation\r
 319  * @param[in] clientResponse  Response from queries to remote servers.\r
 320  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction\r
 321  *          and  OC_STACK_KEEP_TRANSACTION to keep it.\r
 322  */\r
 323 static OCStackApplicationResult DirectPairingFinalizeHandler(void *ctx, OCDoHandle UNUSED,\r
 324                                                   OCClientResponse *clientResponse)\r
 325 {\r
 326     OIC_LOG_V(INFO, TAG, "IN DirectPairingFinalizeHandler()");\r
 327     (void)UNUSED;\r
 328     if(NULL == ctx)\r
 329     {\r
 330         OIC_LOG(ERROR, TAG, "Context is Null");\r
 331         return OC_STACK_DELETE_TRANSACTION;\r
 332     }\r
 333 \r
 334     OCStackResult res;\r
 335     DPairData_t *dpairData = (DPairData_t*)ctx;\r
 336     OCDirectPairingDev_t *peer = dpairData->peer;\r
 337     OCDirectPairingResultCB resultCallback = dpairData->resultCallback;\r
 338 \r
 339     if (clientResponse)\r
 340     {\r
 341         if(OC_STACK_OK == clientResponse->result)\r
 342         {\r
 343             // result\r
 344             OIC_LOG(INFO, TAG, "DirectPairingFinalizeHandler : success PUT"\r
 345                     " request to /oic/sec/dpairing");\r
 346 \r
 347             CAEndpoint_t endpoint;\r
 348             memset(&endpoint, 0x00, sizeof(CAEndpoint_t));\r
 349             OICStrcpy(endpoint.addr, MAX_ADDR_STR_SIZE_CA, peer->endpoint.addr);\r
 350             endpoint.addr[MAX_ADDR_STR_SIZE_CA - 1] = '\0';\r
 351             endpoint.port = peer->securePort;\r
 352 \r
 353             OicUuid_t ptDeviceID = {.id={0}};\r
 354             if (OC_STACK_OK != GetDoxmDeviceID(&ptDeviceID))\r
 355             {\r
 356                 OIC_LOG(ERROR, TAG, "Error while retrieving provisioning tool's device ID");\r
 357                 resultCallback(dpairData->userCtx, peer, OC_STACK_ERROR);\r
 358                 return OC_STACK_DELETE_TRANSACTION;\r
 359             }\r
 360 \r
 361 #ifdef __WITH_DTLS__\r
 362             res = SavePairingPSK((OCDevAddr*)&endpoint, &peer->deviceID, &ptDeviceID, false);\r
 363             if(OC_STACK_OK != res)\r
 364             {\r
 365                 OIC_LOG(ERROR, TAG, "Failed to PairingPSK generation");\r
 366                 resultCallback(dpairData->userCtx, peer, res);\r
 367                 return OC_STACK_DELETE_TRANSACTION;\r
 368             }\r
 369 \r
 370             //  close temporary sesion\r
 371             CAResult_t caResult = CACloseDtlsSession((const CAEndpoint_t*)&endpoint);\r
 372             if(CA_STATUS_OK != caResult)\r
 373             {\r
 374                 OIC_LOG(INFO, TAG, "Fail to close temporary dtls session");\r
 375             }\r
 376 \r
 377             caResult = CASelectCipherSuite(TLS_NULL_WITH_NULL_NULL);\r
 378             if(CA_STATUS_OK != caResult)\r
 379             {\r
 380                 OIC_LOG(ERROR, TAG, "Failed to select TLS_NULL_WITH_NULL_NULL");\r
 381             }\r
 382 #endif // __WITH_DTLS__\r
 383 \r
 384             OIC_LOG(INFO, TAG, "Direct-Papring was successfully completed.");\r
 385 \r
 386             // update paired list\r
 387             OCDirectPairingDev_t *dev = getDev(&g_dp_discover, peer->endpoint.addr,\r
 388                     peer->endpoint.port);\r
 389             res = addDev2(&g_dp_paired, dev);\r
 390             if (OC_STACK_OK != res)\r
 391             {\r
 392                 OIC_LOG(ERROR, TAG, "Error while adding a device to paired list.");\r
 393             }\r
 394 \r
 395             resultCallback(dpairData->userCtx, peer, OC_STACK_OK);\r
 396 \r
 397             return OC_STACK_DELETE_TRANSACTION;\r
 398         }\r
 399         else\r
 400         {\r
 401             OIC_LOG(INFO, TAG, "Direct-Papring received error response.");\r
 402         }\r
 403     }\r
 404     else\r
 405     {\r
 406         OIC_LOG(ERROR, TAG, "DirectPairingFinalizeHandler received Null clientResponse");\r
 407     }\r
 408 \r
 409     resultCallback(dpairData->userCtx, peer, OC_STACK_ERROR);\r
 410     OICFree(dpairData);\r
 411     return OC_STACK_DELETE_TRANSACTION;\r
 412 }\r
 413 \r
 414 /**\r
 415  * Finalize direct-pairing .\r
 416  *\r
 417  * @param[in] peer  target device to establish direct-pairing.\r
 418  * @param[in] resultCallback  result event callback.\r
 419  *\r
 420  * @return OC_STACK_OK on success otherwise error.\r
 421  */\r
 422 OCStackResult FinalizeDirectPairing(void *ctx, OCDirectPairingDev_t* peer,\r
 423                                                      OCDirectPairingResultCB resultCallback)\r
 424 {\r
 425     if(NULL == peer)\r
 426     {\r
 427         return OC_STACK_INVALID_PARAM;\r
 428     }\r
 429 \r
 430     OicUuid_t deviceID =   {.id={0}};\r
 431     if (OC_STACK_OK != GetDoxmDeviceID(&deviceID))\r
 432     {\r
 433         OIC_LOG(ERROR, TAG, "Error while retrieving device ID");\r
 434         return OC_STACK_ERROR;\r
 435     }\r
 436 \r
 437     OicSecDpairing_t dpair;\r
 438     memset(&dpair, 0, sizeof(OicSecDpairing_t));\r
 439     dpair.spm = (OicSecPrm_t)PRM_NOT_ALLOWED;\r
 440     memcpy(&dpair.pdeviceID, &deviceID, sizeof(OicUuid_t));\r
 441 \r
 442     OCSecurityPayload* secPayload = (OCSecurityPayload*)OICCalloc(1, sizeof(OCSecurityPayload));\r
 443     if(!secPayload)\r
 444     {\r
 445         OIC_LOG(ERROR, TAG, "Failed to memory allocation");\r
 446         return OC_STACK_NO_MEMORY;\r
 447     }\r
 448     secPayload->base.type = PAYLOAD_TYPE_SECURITY;\r
 449 \r
 450     OCStackResult ret = DpairingToCBORPayload(&dpair, &(secPayload->securityData),\r
 451             &(secPayload->payloadSize));\r
 452 \r
 453     if(OC_STACK_OK != ret)\r
 454     {\r
 455         OICFree(secPayload);\r
 456         OIC_LOG(ERROR, TAG, "Failed to DpairingToCBORPayload");\r
 457         return OC_STACK_NO_MEMORY;\r
 458     }\r
 459     OIC_LOG(INFO, TAG, "DPARING CBOR data:");\r
 460     OIC_LOG_BUFFER(INFO, TAG, secPayload->securityData, secPayload->payloadSize);\r
 461 \r
 462     char query[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};\r
 463     if(!DPGenerateQuery(true,\r
 464                         peer->endpoint.addr,\r
 465                         peer->securePort,\r
 466                         peer->connType,\r
 467                         query, sizeof(query), OIC_RSRC_DPAIRING_URI))\r
 468     {\r
 469         OIC_LOG(ERROR, TAG, "DPDirectPairing : Failed to generate query");\r
 470         return OC_STACK_ERROR;\r
 471     }\r
 472     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);\r
 473 \r
 474     DPairData_t *dpairData = (DPairData_t *) OICCalloc(1, sizeof(DPairData_t));\r
 475     if (dpairData == NULL)\r
 476     {\r
 477         OICFree(secPayload->securityData);\r
 478         OICFree(secPayload);\r
 479         OIC_LOG(ERROR, TAG, "Unable to allocate memory");\r
 480         return OC_STACK_NO_MEMORY;\r
 481     }\r
 482     dpairData->peer = peer;\r
 483     dpairData->resultCallback = resultCallback;\r
 484     dpairData->userCtx = ctx;\r
 485 \r
 486     OCCallbackData cbData =  {.context=NULL, .cb=NULL, .cd=NULL};\r
 487     cbData.cb = DirectPairingFinalizeHandler;\r
 488     cbData.context = (void*)dpairData;\r
 489     cbData.cd = NULL;\r
 490 \r
 491     OCMethod method = OC_REST_PUT;\r
 492     OCDoHandle handle = NULL;\r
 493     OIC_LOG(DEBUG, TAG, "Sending DPAIRNG setting to resource server");\r
 494     ret = OCDoResource(&handle, method, query,\r
 495             &peer->endpoint, (OCPayload*)secPayload,\r
 496             peer->connType, OC_LOW_QOS, &cbData, NULL, 0);\r
 497     if(OC_STACK_OK != ret)\r
 498     {\r
 499         OIC_LOG(ERROR, TAG, "error in OCDoResource");\r
 500         return OC_STACK_ERROR;\r
 501     }\r
 502 \r
 503     return OC_STACK_OK;\r
 504  }\r
 505 \r
 506 /**\r
 507  * Function to handle the handshake result in Direct-Pairing.\r
 508  * This function will be invoked after DTLS handshake\r
 509  * @param   endPoint  [IN] The remote endpoint.\r
 510  * @param   errorInfo [IN] Error information from the endpoint.\r
 511  * @return  NONE\r
 512  */\r
 513 void DirectPairingDTLSHandshakeCB(const CAEndpoint_t *endpoint, const CAErrorInfo_t *info)\r
 514 {\r
 515     OIC_LOG_V(INFO, TAG, "IN DirectPairingDTLSHandshakeCB");\r
 516 \r
 517 \r
 518     if(g_dp_proceed_ctx && g_dp_proceed_ctx->peer && endpoint && info)\r
 519     {\r
 520         OIC_LOG_V(INFO, TAG, "Received status from remote device(%s:%d) : %d",\r
 521                  endpoint->addr, endpoint->port, info->result);\r
 522 \r
 523         OCDirectPairingDev_t *peer = g_dp_proceed_ctx->peer;\r
 524         OCDirectPairingResultCB resultCallback = g_dp_proceed_ctx->resultCallback;\r
 525         OCStackResult res;\r
 526 \r
 527         //Make sure the address matches.\r
 528         if(strncmp(peer->endpoint.addr, endpoint->addr, sizeof(endpoint->addr)) == 0 &&\r
 529                          peer->securePort == endpoint->port)\r
 530         {\r
 531             //In case of success, send next coaps request.\r
 532             if(CA_STATUS_OK == info->result)\r
 533             {\r
 534                 OIC_LOG(INFO, TAG, "Now, finalize Direct-Pairing procedure.");\r
 535 \r
 536                 res = FinalizeDirectPairing(g_dp_proceed_ctx->userCtx, peer, resultCallback);\r
 537                 if(OC_STACK_OK != res)\r
 538                 {\r
 539                     OIC_LOG(ERROR, TAG, "Failed to finalize direct-pairing");\r
 540                     resultCallback(g_dp_proceed_ctx->userCtx, peer, res);\r
 541                 }\r
 542             }\r
 543             else if(CA_DTLS_AUTHENTICATION_FAILURE == info->result)\r
 544             {\r
 545                 OIC_LOG(INFO, TAG, "DirectPairingDTLSHandshakeCB - Authentication failed");\r
 546                 resultCallback(g_dp_proceed_ctx->userCtx, peer, OC_STACK_AUTHENTICATION_FAILURE);\r
 547             }\r
 548 \r
 549 #ifdef __WITH_DTLS__\r
 550             CARegisterDTLSHandshakeCallback(NULL);\r
 551 #endif // __WITH_DTLS__\r
 552             res = RemoveCredential(&peer->deviceID);\r
 553             if(OC_STACK_RESOURCE_DELETED != res)\r
 554             {\r
 555                 OIC_LOG_V(ERROR, TAG, "Failed to remove temporal PSK : %d", res);\r
 556             }\r
 557 \r
 558             OICFree(g_dp_proceed_ctx);\r
 559             g_dp_proceed_ctx = NULL;\r
 560         }\r
 561         else\r
 562         {\r
 563             OIC_LOG_V(INFO, TAG, "DirectPairingDTLSHandshakeCB - Not matched to peer address");\r
 564         }\r
 565     }\r
 566 \r
 567     OIC_LOG_V(INFO, TAG, "OUT DirectPairingDTLSHandshakeCB");\r
 568 }\r
 569 \r
 570 /**\r
 571  * Callback handler of DPDirectPairing.\r
 572  *\r
 573  * @param[in] ctx             ctx value passed to callback from calling function.\r
 574  * @param[in] UNUSED          handle to an invocation\r
 575  * @param[in] clientResponse  Response from queries to remote servers.\r
 576  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction\r
 577  *          and  OC_STACK_KEEP_TRANSACTION to keep it.\r
 578  */\r
 579 static OCStackApplicationResult DirectPairingHandler(void *ctx, OCDoHandle UNUSED,\r
 580                                                   OCClientResponse *clientResponse)\r
 581 {\r
 582     OIC_LOG_V(INFO, TAG, "IN DirectPairingHandler.");\r
 583     (void)UNUSED;\r
 584     if(NULL == ctx)\r
 585     {\r
 586         OIC_LOG(ERROR, TAG, "Context is Null");\r
 587         return OC_STACK_DELETE_TRANSACTION;\r
 588     }\r
 589 \r
 590     OCStackResult res = OC_STACK_ERROR;\r
 591     DPairData_t *dpairData = (DPairData_t*)ctx;\r
 592     OCDirectPairingResultCB resultCallback = (OCDirectPairingResultCB)dpairData->resultCallback;\r
 593     OicUuid_t subjectId = {.id={0}};\r
 594 \r
 595     if (clientResponse)\r
 596     {\r
 597         if(OC_STACK_RESOURCE_CREATED == clientResponse->result)\r
 598         {\r
 599             // result\r
 600             OIC_LOG(INFO, TAG, "DirectPairingHandler : success POST request to /oic/sec/dpairing");\r
 601 \r
 602 #ifdef __WITH_DTLS__\r
 603             // Add temporary psk\r
 604             res = AddTmpPskWithPIN(&dpairData->peer->deviceID,\r
 605                            SYMMETRIC_PAIR_WISE_KEY,\r
 606                            (char*)dpairData->pin, DP_PIN_LENGTH,\r
 607                            &dpairData->peer->rowner, &subjectId);\r
 608             VERIFY_SUCCESS(TAG, OC_STACK_OK == res, ERROR);\r
 609 \r
 610 \r
 611             // Start to establish a secure channel with Pin-based PSK cipher suite\r
 612             CAResult_t caresult;\r
 613 \r
 614             caresult = CAEnableAnonECDHCipherSuite(false);\r
 615             VERIFY_SUCCESS(TAG, CA_STATUS_OK == caresult, ERROR);\r
 616 \r
 617             caresult = CASelectCipherSuite(TLS_ECDHE_PSK_WITH_AES_128_CBC_SHA_256);\r
 618             VERIFY_SUCCESS(TAG, CA_STATUS_OK == caresult, ERROR);\r
 619 \r
 620             //Register proceeding peer info. & DTLS event handler to catch the dtls event while handshake\r
 621             g_dp_proceed_ctx = dpairData;\r
 622             res = CARegisterDTLSHandshakeCallback(DirectPairingDTLSHandshakeCB);\r
 623             VERIFY_SUCCESS(TAG, CA_STATUS_OK == caresult, ERROR);\r
 624 \r
 625             // initiate dtls\r
 626             CAEndpoint_t *endpoint = (CAEndpoint_t *)OICCalloc(1, sizeof (CAEndpoint_t));\r
 627             VERIFY_NON_NULL(TAG, endpoint, FATAL);\r
 628             memcpy(endpoint,&dpairData->peer->endpoint,sizeof(CAEndpoint_t));\r
 629             endpoint->port = dpairData->peer->securePort;\r
 630             OIC_LOG_V(INFO, TAG, "Initiate DTLS handshake to %s(%d)", endpoint->addr,\r
 631                     endpoint->port);\r
 632 \r
 633             caresult = CAInitiateHandshake(endpoint);\r
 634             OICFree(endpoint);\r
 635             VERIFY_SUCCESS(TAG, CA_STATUS_OK == caresult, ERROR);\r
 636 #endif // __WITH_DTLS__\r
 637 \r
 638             res = OC_STACK_OK;\r
 639         }\r
 640         else\r
 641         {\r
 642             // result\r
 643             OIC_LOG(INFO, TAG, "DirectPairingHandler : fail POST request to /oic/sec/dpairing");\r
 644         }\r
 645     }\r
 646     else\r
 647     {\r
 648         OIC_LOG(ERROR, TAG, "DirectPairingHandler received Null clientResponse");\r
 649     }\r
 650 \r
 651 #ifdef __WITH_DTLS__\r
 652 exit:\r
 653 #endif // __WITH_DTLS__\r
 654 \r
 655     if (OC_STACK_OK != res)\r
 656     {\r
 657         if (0 < strlen((const char*)subjectId.id))\r
 658         {\r
 659             RemoveCredential(&dpairData->peer->deviceID);\r
 660             OICFree(dpairData);\r
 661             g_dp_proceed_ctx = NULL;\r
 662         }\r
 663 \r
 664         resultCallback(dpairData->userCtx, dpairData->peer, res);\r
 665     }\r
 666     OIC_LOG_V(INFO, TAG, "OUT DirectPairingHandler.");\r
 667     return OC_STACK_DELETE_TRANSACTION;\r
 668 }\r
 669 \r
 670 /**\r
 671  * Start direct-pairing .\r
 672  *\r
 673  * @param[in] peer  target device to establish direct-pairing.\r
 674  * @param[in] pmSel  selected pairing method.\r
 675  * @param[in] pinNumber  secret value for dtls connection.\r
 676  *\r
 677  * @return OC_STACK_OK on success otherwise error.\r
 678  */\r
 679 OCStackResult DPDirectPairing(void *ctx, OCDirectPairingDev_t* peer, OicSecPrm_t pmSel,\r
 680                                 char *pinNumber, OCDirectPairingResultCB resultCallback)\r
 681 {\r
 682     if(NULL == peer || NULL == pinNumber)\r
 683     {\r
 684         return OC_STACK_INVALID_PARAM;\r
 685     }\r
 686 \r
 687     OicUuid_t deviceID =   {.id={0}};\r
 688     if (OC_STACK_OK != GetDoxmDeviceID(&deviceID))\r
 689     {\r
 690         OIC_LOG(ERROR, TAG, "Error while retrieving device ID");\r
 691         return OC_STACK_ERROR;\r
 692     }\r
 693 \r
 694     OicSecDpairing_t dpair;\r
 695     memset(&dpair, 0, sizeof(OicSecDpairing_t));\r
 696     dpair.spm = pmSel;\r
 697     memcpy(&dpair.pdeviceID, &deviceID, sizeof(OicUuid_t));\r
 698 \r
 699     OCSecurityPayload* secPayload = (OCSecurityPayload*)OICCalloc(1, sizeof(OCSecurityPayload));\r
 700     if(!secPayload)\r
 701     {\r
 702         OIC_LOG(ERROR, TAG, "Failed to memory allocation");\r
 703         return OC_STACK_NO_MEMORY;\r
 704     }\r
 705     secPayload->base.type = PAYLOAD_TYPE_SECURITY;\r
 706 \r
 707     OCStackResult ret = DpairingToCBORPayload(&dpair, &(secPayload->securityData),\r
 708             &(secPayload->payloadSize));\r
 709 \r
 710     if(OC_STACK_OK != ret)\r
 711     {\r
 712         OICFree(secPayload);\r
 713         OIC_LOG(ERROR, TAG, "Failed to DpairingToCBORPayload");\r
 714         return OC_STACK_NO_MEMORY;\r
 715     }\r
 716     OIC_LOG(INFO, TAG, "DPARING CBOR data:");\r
 717     OIC_LOG_BUFFER(INFO, TAG, secPayload->securityData, secPayload->payloadSize);\r
 718 \r
 719     char query[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};\r
 720     if(!DPGenerateQuery(false,\r
 721                         peer->endpoint.addr,\r
 722                         peer->endpoint.port,\r
 723                         //peer->securePort,\r
 724                         peer->connType,\r
 725                         query, sizeof(query), OIC_RSRC_DPAIRING_URI))\r
 726     {\r
 727         OIC_LOG(ERROR, TAG, "DPDirectPairing : Failed to generate query");\r
 728         return OC_STACK_ERROR;\r
 729     }\r
 730     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);\r
 731 \r
 732     DPairData_t *dpairData = (DPairData_t *) OICCalloc(1, sizeof(DPairData_t));\r
 733     if (dpairData == NULL)\r
 734     {\r
 735         OICFree(secPayload->securityData);\r
 736         OICFree(secPayload);\r
 737         OIC_LOG(ERROR, TAG, "Unable to allocate memory");\r
 738         return OC_STACK_NO_MEMORY;\r
 739     }\r
 740     dpairData->peer = peer;\r
 741     memcpy(dpairData->pin, pinNumber, DP_PIN_LENGTH);\r
 742     dpairData->resultCallback = resultCallback;\r
 743     dpairData->userCtx = ctx;\r
 744 \r
 745     OCCallbackData cbData =  {.context=NULL, .cb=NULL, .cd=NULL};\r
 746     cbData.cb = DirectPairingHandler;\r
 747     cbData.context = (void*)dpairData;\r
 748     cbData.cd = NULL;\r
 749 \r
 750     OCMethod method = OC_REST_POST;\r
 751     OCDoHandle handle = NULL;\r
 752     OIC_LOG(DEBUG, TAG, "Sending DPAIRNG setting to resource server");\r
 753     ret = OCDoResource(&handle, method, query,\r
 754             &peer->endpoint, (OCPayload*)secPayload,\r
 755             peer->connType, OC_LOW_QOS, &cbData, NULL, 0);\r
 756     if(OC_STACK_OK != ret)\r
 757     {\r
 758         OIC_LOG(ERROR, TAG, "error in OCDoResource");\r
 759         return OC_STACK_ERROR;\r
 760     }\r
 761 \r
 762     return OC_STACK_OK;\r
 763 \r
 764  }\r
 765 \r
 766 /**\r
 767  * Callback handler for getting secure port information using /oic/res discovery.\r
 768  *\r
 769  * @param[in] ctx             user context\r
 770  * @param[in] handle          Handle for response\r
 771  * @param[in] clientResponse  Response information(It will contain payload)\r
 772  *\r
 773  * @return OC_STACK_KEEP_TRANSACTION to keep transaction and\r
 774  *         OC_STACK_DELETE_TRANSACTION to delete it.\r
 775  */\r
 776 static OCStackApplicationResult DirectPairingPortDiscoveryHandler(void *ctx, OCDoHandle UNUSED,\r
 777                                  OCClientResponse *clientResponse)\r
 778 {\r
 779     OIC_LOG(INFO, TAG, "Callback Context for Direct-Pairing Secure Port DISCOVER "\r
 780             "query recvd successfully");\r
 781 \r
 782     (void)ctx;\r
 783     (void)UNUSED;\r
 784     if (clientResponse)\r
 785     {\r
 786         if  (NULL == clientResponse->payload)\r
 787         {\r
 788             OIC_LOG(INFO, TAG, "Skiping Null payload");\r
 789         }\r
 790         else\r
 791         {\r
 792             if (PAYLOAD_TYPE_DISCOVERY != clientResponse->payload->type)\r
 793             {\r
 794                 OIC_LOG(INFO, TAG, "Wrong payload type");\r
 795                 return OC_STACK_DELETE_TRANSACTION;\r
 796             }\r
 797 \r
 798             uint16_t securePort = 0;\r
 799             OCResourcePayload* resPayload = ((OCDiscoveryPayload*)clientResponse->payload)->resources;\r
 800             OIC_LOG_PAYLOAD(INFO, clientResponse->payload);\r
 801 \r
 802             if (resPayload && resPayload->secure)\r
 803             {\r
 804                 securePort = resPayload->port;\r
 805             }\r
 806             else\r
 807             {\r
 808                 OIC_LOG(INFO, TAG, "Can not find secure port information.");\r
 809                 return OC_STACK_DELETE_TRANSACTION;\r
 810             }\r
 811 \r
 812             OCDirectPairingDev_t *ptr = getDev(&g_dp_discover,\r
 813                     clientResponse->devAddr.addr, clientResponse->devAddr.port);\r
 814             if(!ptr)\r
 815             {\r
 816                 OIC_LOG(ERROR, TAG, "Can not find device information in the discovery device list");\r
 817                 return OC_STACK_DELETE_TRANSACTION;\r
 818             }\r
 819             ptr->securePort = securePort;\r
 820 \r
 821             OIC_LOG(INFO, TAG, "Exiting DirectPairingPortDiscoveryHandler.");\r
 822         }\r
 823 \r
 824         return  OC_STACK_DELETE_TRANSACTION;\r
 825     }\r
 826     else\r
 827     {\r
 828         OIC_LOG(INFO, TAG, "Skiping Null response");\r
 829     }\r
 830     return  OC_STACK_DELETE_TRANSACTION;\r
 831 }\r
 832 \r
 833 /**\r
 834  * Callback handler for DPDeviceDiscovery API.\r
 835  *\r
 836  * @param[in] ctx             User context\r
 837  * @param[in] handle          Handler for response\r
 838  * @param[in] clientResponse  Response information (It will contain payload)\r
 839  * @return OC_STACK_KEEP_TRANSACTION to keep transaction and\r
 840  *         OC_STACK_DELETE_TRANSACTION to delete it.\r
 841  */\r
 842 static OCStackApplicationResult DirectPairingDiscoveryHandler(void* ctx, OCDoHandle UNUSED,\r
 843         OCClientResponse * clientResponse)\r
 844 {\r
 845     OIC_LOG(INFO, TAG, "Callback Context for Direct-Pairing DISCOVER query recvd successfully");\r
 846 \r
 847     (void)ctx;\r
 848     (void)UNUSED;\r
 849     if (clientResponse)\r
 850     {\r
 851         OIC_LOG_V(INFO, TAG, "StackResult: %d", clientResponse->result);\r
 852         OIC_LOG_V(INFO, TAG,\r
 853                 "Device =============> Discovered @ %s:%d",\r
 854                 clientResponse->devAddr.addr,\r
 855                 clientResponse->devAddr.port);\r
 856 \r
 857         if  (NULL == clientResponse->payload)\r
 858         {\r
 859             OIC_LOG(INFO, TAG, "Skiping Null payload");\r
 860             return OC_STACK_KEEP_TRANSACTION;\r
 861         }\r
 862         if (OC_STACK_OK != clientResponse->result)\r
 863         {\r
 864             OIC_LOG(INFO, TAG, "Error in response");\r
 865             return OC_STACK_KEEP_TRANSACTION;\r
 866         }\r
 867 \r
 868         OIC_LOG_PAYLOAD(INFO, clientResponse->payload);\r
 869         OicSecPconf_t *pconf = NULL;\r
 870 \r
 871         OCStackResult res = CBORPayloadToPconf(\r
 872                 ((OCSecurityPayload*)clientResponse->payload)->securityData,\r
 873                 CBOR_SIZE,&pconf);\r
 874         if (OC_STACK_OK != res )\r
 875         {\r
 876             OIC_LOG(INFO, TAG, "Ignoring malformed CBOR");\r
 877             return OC_STACK_KEEP_TRANSACTION;\r
 878         }\r
 879         else\r
 880         {\r
 881             if(pconf->edp)\r
 882             {\r
 883                 OCDevAddr endpoint;\r
 884                 memcpy(&endpoint, &clientResponse->devAddr, sizeof(OCDevAddr));\r
 885 \r
 886                 OCStackResult res = addDev(&g_dp_discover, &endpoint,\r
 887                             clientResponse->connType, pconf);\r
 888                 DeletePconfBinData(pconf);\r
 889                 if (OC_STACK_OK != res)\r
 890                 {\r
 891                     OIC_LOG(ERROR, TAG, "Error while adding data to linkedlist.");\r
 892                     return OC_STACK_KEEP_TRANSACTION;\r
 893                 }\r
 894 \r
 895 \r
 896                 char rsrc_uri[MAX_URI_LENGTH+1] = {0};\r
 897                 int wr_len = snprintf(rsrc_uri, sizeof(rsrc_uri), "%s?%s=%s",\r
 898                           OC_RSRVD_WELL_KNOWN_URI, OC_RSRVD_RESOURCE_TYPE, OIC_RSRC_TYPE_SEC_DPAIRING);\r
 899                 if(wr_len <= 0 || (size_t)wr_len >= sizeof(rsrc_uri))\r
 900                 {\r
 901                     OIC_LOG(ERROR, TAG, "rsrc_uri_string_print failed");\r
 902                     return OC_STACK_KEEP_TRANSACTION;\r
 903                 }\r
 904 \r
 905                 //Try to the unicast discovery to getting secure port\r
 906                 char query[MAX_URI_LENGTH+MAX_QUERY_LENGTH+1] = {0};\r
 907                 if(!DPGenerateQuery(false,\r
 908                                     clientResponse->devAddr.addr, clientResponse->devAddr.port,\r
 909                                     clientResponse->connType,\r
 910                                     query, sizeof(query), rsrc_uri))\r
 911                 {\r
 912                     OIC_LOG(ERROR, TAG, "DirectPairingDiscoveryHandler : Failed to generate query");\r
 913                     return OC_STACK_KEEP_TRANSACTION;\r
 914                 }\r
 915                 OIC_LOG_V(DEBUG, TAG, "Query=%s", query);\r
 916 \r
 917                 OCCallbackData cbData;\r
 918                 cbData.cb = &DirectPairingPortDiscoveryHandler;\r
 919                 cbData.context = NULL;\r
 920                 cbData.cd = NULL;\r
 921                 OCStackResult ret = OCDoResource(NULL, OC_REST_DISCOVER, query, 0, 0,\r
 922                         clientResponse->connType, OC_LOW_QOS, &cbData, NULL, 0);\r
 923                 if(OC_STACK_OK != ret)\r
 924                 {\r
 925                     OIC_LOG(ERROR, TAG, "Failed to Secure Port Discovery");\r
 926                     return OC_STACK_KEEP_TRANSACTION;\r
 927                 }\r
 928                 else\r
 929                 {\r
 930                     OIC_LOG_V(INFO, TAG, "OCDoResource with [%s] Success", query);\r
 931                 }\r
 932             }\r
 933             return  OC_STACK_KEEP_TRANSACTION;\r
 934         }\r
 935     }\r
 936     else\r
 937     {\r
 938         OIC_LOG(INFO, TAG, "Skiping Null response");\r
 939     }\r
 940 \r
 941     return OC_STACK_DELETE_TRANSACTION;\r
 942 }\r
 943 #ifndef WITH_ARDUINO\r
 944 /**\r
 945  * Discover direct-pairing devices in the same IP subnet. .\r
 946  *\r
 947  * @param[in] waittime  Timeout in seconds.\r
 948  *\r
 949  * @return OC_STACK_OK on success otherwise error.\r
 950  */\r
 951 OCStackResult DPDeviceDiscovery(unsigned short waittime)\r
 952 {\r
 953     OIC_LOG(DEBUG, TAG, "IN DPDeviceDiscovery");\r
 954 \r
 955     if (g_dp_discover)\r
 956     {\r
 957         delList(g_dp_discover);\r
 958         g_dp_discover = NULL;\r
 959     }\r
 960 \r
 961     OCStackResult ret;\r
 962 \r
 963     const char DP_DISCOVERY_QUERY[] = "/oic/sec/pconf";\r
 964 \r
 965     OCCallbackData cbData;\r
 966     cbData.cb = DirectPairingDiscoveryHandler;\r
 967     cbData.context = NULL;\r
 968     cbData.cd = NULL;\r
 969 \r
 970     /* Start a DP discovery query*/\r
 971     OIC_LOG_V(INFO, TAG, "Initiating Direct-Pairing Discovery : %s\n", DP_DISCOVERY_QUERY);\r
 972     OCDoHandle handle = NULL;\r
 973     ret = OCDoResource(&handle, OC_REST_DISCOVER, DP_DISCOVERY_QUERY, 0, 0, CT_DEFAULT,\r
 974                        OC_LOW_QOS, &cbData, NULL, 0);\r
 975     if (ret != OC_STACK_OK)\r
 976     {\r
 977         OIC_LOG(ERROR, TAG, "OCStack resource error");\r
 978         return ret;\r
 979     }\r
 980 \r
 981     // wait..\r
 982 \r
 983     int clock_res = -1;\r
 984 #if defined(_MSC_VER)\r
 985     time_t startTime = NULL;\r
 986     clock_res = (time(&startTime) == -1);\r
 987 #else\r
 988     struct timespec startTime = {.tv_sec=0, .tv_nsec=0};\r
 989 #if defined(__ANDROID__) || _POSIX_TIMERS > 0\r
 990     clock_res = clock_gettime(CLOCK_MONOTONIC, &startTime);\r
 991 #endif\r
 992 #endif\r
 993     if (0 != clock_res)\r
 994     {\r
 995         OIC_LOG(ERROR, TAG, "clock error");\r
 996         if(OC_STACK_OK !=  OCCancel(handle, OC_LOW_QOS, NULL, 0))\r
 997         {\r
 998             OIC_LOG(ERROR, TAG, "Failed to remove registered callback");\r
 999         }\r
1000         return OC_STACK_ERROR;\r
1001     }\r
1002 \r
1003     while (1)\r
1004     {\r
1005 #if defined(_MSC_VER)\r
1006         time_t currTime = NULL;\r
1007         clock_res = (time(&currTime) == -1);\r
1008 #else\r
1009         struct timespec currTime  = {.tv_sec=0, .tv_nsec=0};\r
1010 #if defined(__ANDROID__) || _POSIX_TIMERS > 0\r
1011         clock_res = clock_gettime(CLOCK_MONOTONIC, &currTime);\r
1012 #endif\r
1013 #endif\r
1014         if (0 != clock_res)\r
1015         {\r
1016             OIC_LOG(ERROR, TAG, "clock error");\r
1017             ret = OC_STACK_ERROR;\r
1018             break;\r
1019         }\r
1020 #if defined(_MSC_VER)\r
1021         long elapsed = currTime - startTime;\r
1022 #else\r
1023         long elapsed = (currTime.tv_sec - startTime.tv_sec);\r
1024 #endif\r
1025         if (elapsed > waittime)\r
1026         {\r
1027             break;\r
1028         }\r
1029         else\r
1030         {\r
1031             struct timespec timeout = {.tv_sec=0, .tv_nsec=100000000L};\r
1032             OCProcess();\r
1033             nanosleep(&timeout, NULL);\r
1034         }\r
1035     }\r
1036 \r
1037     // Waiting for each response.\r
1038     ret = OCCancel(handle, OC_LOW_QOS, NULL, 0);\r
1039     if (OC_STACK_OK != ret)\r
1040     {\r
1041         OIC_LOG(ERROR, TAG, "Failed to remove registered callback");\r
1042     }\r
1043     OIC_LOG(DEBUG, TAG, "OUT DPDeviceDiscovery");\r
1044     return ret;\r
1045 }\r
1046 #endif\r