resource/csdk/security/provisioning/src/secureresourceprovider.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 #include <stdio.h>
  21 #include <string.h>
  22 #include <stdint.h>
  23 #include <unistd.h>
  24
  25 #include "ocprovisioningmanager.h"
  26 #include "secureresourceprovider.h"
  27 #include "logger.h"
  28 #include "oic_malloc.h"
  29 #include "aclresource.h"
  30 #include "pstatresource.h"
  31 #include "srmresourcestrings.h"
  32 #include "credresource.h"
  33 #include "doxmresource.h"
  34 #include "pconfresource.h"
  35 #include "credentialgenerator.h"
  36 #include "cainterface.h"
  37 #include "cJSON.h"
  38 #include "pmtypes.h"
  39 #include "pmutility.h"
  40 #include "provisioningdatabasemanager.h"
  41 #include "base64.h"
  42 #include "utlist.h"
  43 #include "ocpayload.h"
  44
  45 #ifdef __WITH_X509__
  46 #include "crlresource.h"
  47 #endif // WITH_X509__
  48
  49 #define TAG "SRPAPI"
  50
  51 /**
  52  * Macro to verify argument is not equal to NULL.
  53  * eg: VERIFY_NON_NULL(TAG, ptrData, ERROR,OC_STACK_ERROR);
  54  */
  55 #define VERIFY_NON_NULL(tag, arg, logLevel, retValue) { if (NULL == (arg)) \
  56             { OIC_LOG((logLevel), tag, #arg " is NULL"); return retValue; } }
  57
  58 /**
  59  * Macro to verify success of operation.
  60  * eg: VERIFY_SUCCESS(TAG, OC_STACK_OK == foo(), ERROR, OC_STACK_ERROR);
  61  */
  62 #define VERIFY_SUCCESS(tag, op, logLevel, retValue) { if (!(op)) \
  63             {OIC_LOG((logLevel), tag, #op " failed!!"); return retValue;} }
  64
  65 /**
  66  * Structure to carry credential data to callback.
  67  */
  68 typedef struct CredentialData CredentialData_t;
  69 struct CredentialData
  70 {
  71     void *ctx;                                  /**< Pointer to user context.**/
  72     const OCProvisionDev_t *deviceInfo1;        /**< Pointer to OCProvisionDev_t.**/
  73     const OCProvisionDev_t *deviceInfo2;        /**< Pointer to OCProvisionDev_t.**/
  74     OicSecCred_t *credInfo;                     /**< Pointer to OicSecCred_t.**/
  75     OicSecCred_t *credInfoFirst;                /**< Pointer to OicSecCred_t.**/
  76     OCProvisionResultCB resultCallback;         /**< Pointer to result callback.**/
  77     OCProvisionResult_t *resArr;                /**< Result array.**/
  78     int numOfResults;                           /**< Number of results in result array.**/
  79 };
  80
  81 /**
  82  * Structure to carry ACL provision API data to callback.
  83  */
  84 typedef struct ACLData ACLData_t;
  85 struct ACLData
  86 {
  87     void *ctx;                                  /**< Pointer to user context.**/
  88     const OCProvisionDev_t *deviceInfo;         /**< Pointer to PMDevInfo_t.**/
  89     OCProvisionResultCB resultCallback;         /**< Pointer to result callback.**/
  90     OCProvisionResult_t *resArr;                /**< Result array.**/
  91     int numOfResults;                           /**< Number of results in result array.**/
  92 };
  93
  94 /**
  95  * Structure to carry PCONF provision API data to callback.
  96  */
  97 typedef struct PconfData PconfData_t;
  98 struct PconfData
  99 {
 100     void *ctx;                                  /**< Pointer to user context.**/
 101     const OCProvisionDev_t *deviceInfo;         /**< Pointer to PMDevInfo_t.**/
 102     OCProvisionResultCB resultCallback;         /**< Pointer to result callback.**/
 103     OCProvisionResult_t *resArr;                /**< Result array.**/
 104     int numOfResults;                           /**< Number of results in result array.**/
 105 };
 106
 107 // Enum type index for unlink callback.
 108 typedef enum {
 109     IDX_FIRST_DEVICE_RES = 0, // index for resulf of the first device
 110     IDX_SECOND_DEVICE_RES,    // index for result of the second device
 111     IDX_DB_UPDATE_RES         // index for result of updating provisioning database.
 112 } IdxUnlinkRes_t;
 113
 114 // Structure to carry unlink APIs data to callback.
 115 typedef struct UnlinkData UnlinkData_t;
 116 struct UnlinkData {
 117     void *ctx;
 118     OCProvisionDev_t* unlinkDev;             /**< Pointer to OCProvisionDev_t to be unlinked.**/
 119     OCProvisionResult_t* unlinkRes;          /**< Result array.**/
 120     OCProvisionResultCB resultCallback;      /**< Pointer to result callback.**/
 121     int numOfResults;                        /**< Number of results in result array.**/
 122 };
 123
 124 //Example of DELETE cred request -> coaps://0.0.0.0:5684/oic/sec/cred?sub=(BASE64 ENCODED UUID)
 125 const char * SRP_FORM_DELETE_CREDENTIAL = "coaps://[%s]:%d%s?%s=%s";
 126
 127 // Structure to carry remove APIs data to callback.
 128 typedef struct RemoveData RemoveData_t;
 129 struct RemoveData {
 130     void *ctx;
 131     OCProvisionDev_t* revokeTargetDev;      /**< Device which is going to be revoked..**/
 132     OCProvisionDev_t* linkedDevList;        /**< A list of devices which have invalid credential.**/
 133     OCProvisionResult_t* removeRes;         /**< Result array.**/
 134     OCProvisionResultCB resultCallback;     /**< Pointer to result callback.**/
 135     size_t numOfResults;                    /**< Number of results in result array.**/
 136     size_t sizeOfResArray;
 137     bool hasError;
 138 };
 139
 140 /**
 141  * Function prototype
 142  */
 143 static OCStackResult provisionCredentials(const OicSecCred_t *cred,
 144         const OCProvisionDev_t *deviceInfo, CredentialData_t *credData,
 145         OCClientResponseHandler responseHandler);
 146
 147
 148 /**
 149  * Internal function to update result in result array.
 150  */
 151 static void registerResultForCredProvisioning(CredentialData_t *credData,
 152                                               OCStackResult stackresult, int cause)
 153 {
 154
 155    OIC_LOG_V(INFO,TAG,"value of credData->numOfResults is %d",credData->numOfResults);
 156    if(1 == cause)
 157    {
 158        memcpy(credData->resArr[(credData->numOfResults)].deviceId.id,
 159               credData->deviceInfo1->doxm->deviceID.id,UUID_LENGTH);
 160    }
 161    else
 162    {
 163        memcpy(credData->resArr[(credData->numOfResults)].deviceId.id,
 164               credData->deviceInfo2->doxm->deviceID.id,UUID_LENGTH);
 165    }
 166    credData->resArr[(credData->numOfResults)].res = stackresult;
 167    ++(credData->numOfResults);
 168 }
 169
 170 /**
 171  * Callback handler for handling callback of provisioning device 2.
 172  *
 173  * @param[in] ctx             ctx value passed to callback from calling function.
 174  * @param[in] UNUSED          handle to an invocation
 175  * @param[in] clientResponse  Response from queries to remote servers.
 176  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction
 177  *          and  OC_STACK_KEEP_TRANSACTION to keep it.
 178  */
 179 static OCStackApplicationResult provisionCredentialCB2(void *ctx, OCDoHandle UNUSED,
 180                                                        OCClientResponse *clientResponse)
 181 {
 182     VERIFY_NON_NULL(TAG, ctx, ERROR, OC_STACK_DELETE_TRANSACTION);
 183     CredentialData_t *credData = (CredentialData_t *) ctx;
 184     (void)UNUSED;
 185
 186     OCProvisionResultCB resultCallback = credData->resultCallback;
 187     OIC_LOG(INFO, TAG, "provisionCredentialCB2 called");
 188     if (clientResponse)
 189     {
 190         if(OC_STACK_RESOURCE_CREATED == clientResponse->result)
 191         {
 192             registerResultForCredProvisioning(credData, OC_STACK_RESOURCE_CREATED, 2);
 193             OCStackResult res =  PDMLinkDevices(&credData->deviceInfo1->doxm->deviceID,
 194                     &credData->deviceInfo2->doxm->deviceID);
 195             if (OC_STACK_OK != res)
 196             {
 197                 OIC_LOG(ERROR, TAG, "Error occured on PDMLinkDevices");
 198                 return OC_STACK_DELETE_TRANSACTION;
 199             }
 200             OIC_LOG(INFO, TAG, "Link created successfully");
 201
 202             ((OCProvisionResultCB)(resultCallback))(credData->ctx, credData->numOfResults,
 203                                                     credData->resArr,
 204                                                     false);
 205              OICFree(credData->resArr);
 206              OICFree(credData);
 207              return OC_STACK_DELETE_TRANSACTION;
 208         }
 209
 210     }
 211     OIC_LOG(INFO, TAG, "provisionCredentialCB2 received Null clientResponse");
 212     registerResultForCredProvisioning(credData, OC_STACK_ERROR, 2);
 213     ((OCProvisionResultCB)(resultCallback))(credData->ctx, credData->numOfResults,
 214                                             credData->resArr,
 215                                             true);
 216     OICFree(credData->resArr);
 217     OICFree(credData);
 218     return OC_STACK_DELETE_TRANSACTION;
 219 }
 220
 221 /**
 222  * Callback handler for handling callback of provisioning device 1.
 223  *
 224  * @param[in] ctx             ctx value passed to callback from calling function.
 225  * @param[in] UNUSED          handle to an invocation
 226  * @param[in] clientResponse  Response from queries to remote servers.
 227  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction
 228  *          and  OC_STACK_KEEP_TRANSACTION to keep it.
 229  */
 230 static OCStackApplicationResult provisionCredentialCB1(void *ctx, OCDoHandle UNUSED,
 231                                                        OCClientResponse *clientResponse)
 232 {
 233     VERIFY_NON_NULL(TAG, ctx, ERROR, OC_STACK_DELETE_TRANSACTION);
 234     (void)UNUSED;
 235     CredentialData_t* credData = (CredentialData_t*) ctx;
 236     OICFree(credData->credInfoFirst);
 237     const OCProvisionDev_t *deviceInfo = credData->deviceInfo2;
 238     OicSecCred_t *credInfo = credData->credInfo;
 239     const OCProvisionResultCB resultCallback = credData->resultCallback;
 240     if (clientResponse)
 241     {
 242         if (OC_STACK_RESOURCE_CREATED == clientResponse->result)
 243         {
 244             // send credentials to second device
 245             registerResultForCredProvisioning(credData, OC_STACK_RESOURCE_CREATED,1);
 246             OCStackResult res = provisionCredentials(credInfo, deviceInfo, credData,
 247                     provisionCredentialCB2);
 248             DeleteCredList(credInfo);
 249             if (OC_STACK_OK != res)
 250             {
 251                 registerResultForCredProvisioning(credData, res,2);
 252                 ((OCProvisionResultCB)(resultCallback))(credData->ctx, credData->numOfResults,
 253                                                         credData->resArr,
 254                                                         true);
 255                 OICFree(credData->resArr);
 256                 OICFree(credData);
 257                 credData = NULL;
 258             }
 259         }
 260         else
 261         {
 262             registerResultForCredProvisioning(credData, OC_STACK_ERROR,1);
 263             ((OCProvisionResultCB)(resultCallback))(credData->ctx, credData->numOfResults,
 264                                                     credData->resArr,
 265                                                     true);
 266             OICFree(credData->resArr);
 267             OICFree(credData);
 268             credData = NULL;
 269         }
 270     }
 271     else
 272     {
 273         OIC_LOG(INFO, TAG, "provisionCredentialCB received Null clientResponse for first device");
 274         registerResultForCredProvisioning(credData, OC_STACK_ERROR,1);
 275        ((OCProvisionResultCB)(resultCallback))(credData->ctx, credData->numOfResults,
 276                                                      credData->resArr,
 277                                                      true);
 278         DeleteCredList(credInfo);
 279         OICFree(credData->resArr);
 280         OICFree(credData);
 281         credData = NULL;
 282     }
 283     return OC_STACK_DELETE_TRANSACTION;
 284 }
 285
 286
 287
 288 /**
 289  * Internal function for handling credential generation and sending credential to resource server.
 290  *
 291  * @param[in] cred Instance of cred resource.
 292  * @param[in] deviceInfo information about device to which credential is to be provisioned.
 293  * @param[in] responseHandler callbak called by OC stack when request API receives response.
 294  * @return  OC_STACK_OK in case of success and other value otherwise.
 295  */
 296 static OCStackResult provisionCredentials(const OicSecCred_t *cred,
 297         const OCProvisionDev_t *deviceInfo, CredentialData_t *credData,
 298         OCClientResponseHandler responseHandler)
 299 {
 300     OCSecurityPayload* secPayload = (OCSecurityPayload*)OICCalloc(1, sizeof(OCSecurityPayload));
 301     if (!secPayload)
 302     {
 303         OIC_LOG(ERROR, TAG, "Failed to memory allocation");
 304         return OC_STACK_NO_MEMORY;
 305     }
 306     secPayload->base.type = PAYLOAD_TYPE_SECURITY;
 307     OCStackResult res = CredToCBORPayload(cred, &secPayload->securityData1, &secPayload->payloadSize);
 308     if((OC_STACK_OK != res) && (NULL == secPayload->securityData1))
 309     {
 310         OCPayloadDestroy((OCPayload *)secPayload);
 311         OIC_LOG(ERROR, TAG, "Failed to CredToCBORPayload");
 312         return OC_STACK_NO_MEMORY;
 313     }
 314
 315     OIC_LOG_V(INFO, TAG, "Credential for provisioning : %s",secPayload->securityData1);
 316     char query[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};
 317     if(!PMGenerateQuery(true,
 318                         deviceInfo->endpoint.addr,
 319                         deviceInfo->securePort,
 320                         deviceInfo->connType,
 321                         query, sizeof(query), OIC_RSRC_CRED_URI))
 322     {
 323         OIC_LOG(ERROR, TAG, "DeviceDiscoveryHandler : Failed to generate query");
 324         return OC_STACK_ERROR;
 325     }
 326     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
 327
 328     OCCallbackData cbData = {.context=NULL, .cb=NULL, .cd=NULL};
 329     cbData.cb = responseHandler;
 330     cbData.context = (void *) credData;
 331     cbData.cd = NULL;
 332
 333     OCDoHandle handle = NULL;
 334     OCMethod method = OC_REST_POST;
 335     OCStackResult ret = OCDoResource(&handle, method, query, 0, (OCPayload*)secPayload,
 336             deviceInfo->connType, OC_HIGH_QOS, &cbData, NULL, 0);
 337     OIC_LOG_V(INFO, TAG, "OCDoResource::Credential provisioning returned : %d",ret);
 338     if (ret != OC_STACK_OK)
 339     {
 340         OIC_LOG(ERROR, TAG, "OCStack resource error");
 341         return ret;
 342     }
 343     return OC_STACK_OK;
 344 }
 345
 346 #ifdef __WITH_X509__
 347 /**
 348  * Structure to carry certificate data to callback.
 349  */
 350 typedef struct CertificateData CertData_t;
 351 struct CertificateData
 352 {
 353     void *ctx;                                  /**< Pointer to user context.**/
 354     const OCProvisionDev_t *deviceInfo;        /**< Pointer to OCProvisionDev_t.**/
 355     OicSecCred_t *credInfo;                     /**< Pointer to OicSecCred_t.**/
 356     OCProvisionResultCB resultCallback;         /**< Pointer to result callback.**/
 357     OCProvisionResult_t *resArr;                /**< Result array.**/
 358     int numOfResults;                           /**< Number of results in result array.**/
 359 };
 360
 361 /**
 362  * Structure to carry CRL provision API data to callback.
 363  */
 364 typedef struct CRLData CRLData_t;
 365 struct CRLData
 366 {
 367     void *ctx;                                  /**< Pointer to user context.**/
 368     const OCProvisionDev_t *deviceInfo;         /**< Pointer to PMDevInfo_t.**/
 369     OCProvisionResultCB resultCallback;         /**< Pointer to result callback.**/
 370     OCProvisionResult_t *resArr;                /**< Result array.**/
 371     int numOfResults;                           /**< Number of results in result array.**/
 372 };
 373
 374 /**
 375  * Internal function to update result in result array.
 376  */
 377 static void registerResultForCertProvisioning(CertData_t *certData,
 378                                               OCStackResult stackresult)
 379 {
 380
 381    OIC_LOG_V(INFO,TAG,"value of credData->numOfResults is %d",certData->numOfResults);
 382    memcpy(certData->resArr[(certData->numOfResults)].deviceId.id,
 383           certData->deviceInfo->doxm->deviceID.id,UUID_LENGTH);
 384    certData->resArr[(certData->numOfResults)].res = stackresult;
 385    ++(certData->numOfResults);
 386 }
 387
 388 /**
 389  * Internal Function to store results in result array during ACL provisioning.
 390  */
 391 static void registerResultForCRLProvisioning(CRLData_t *crlData,
 392                                              OCStackResult stackresult)
 393 {
 394    OIC_LOG_V(INFO, TAG, "Inside registerResultForCRLProvisioning crlData->numOfResults is %d\n",
 395                        crlData->numOfResults);
 396    memcpy(crlData->resArr[(crlData->numOfResults)].deviceId.id,
 397           crlData->deviceInfo->doxm->deviceID.id, UUID_LENGTH);
 398    crlData->resArr[(crlData->numOfResults)].res = stackresult;
 399    ++(crlData->numOfResults);
 400 }
 401
 402
 403 /**
 404  * Callback handler of SRPProvisionCRL.
 405  *
 406  * @param[in] ctx             ctx value passed to callback from calling function.
 407  * @param[in] UNUSED          handle to an invocation
 408  * @param[in] clientResponse  Response from queries to remote servers.
 409  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction
 410  *          and  OC_STACK_KEEP_TRANSACTION to keep it.
 411  */
 412 static OCStackApplicationResult SRPProvisionCRLCB(void *ctx, OCDoHandle UNUSED,
 413                                                   OCClientResponse *clientResponse)
 414 {
 415     OIC_LOG_V(INFO, TAG, "Inside SRPProvisionCRLCB.");
 416     (void)UNUSED;
 417     VERIFY_NON_NULL(TAG, ctx, ERROR, OC_STACK_DELETE_TRANSACTION);
 418     CRLData_t *crlData = (CRLData_t*)ctx;
 419     OCProvisionResultCB resultCallback = crlData->resultCallback;
 420
 421     if (clientResponse)
 422     {
 423         if(OC_STACK_RESOURCE_CREATED == clientResponse->result)
 424         {
 425             registerResultForCRLProvisioning(crlData, OC_STACK_RESOURCE_CREATED);
 426             ((OCProvisionResultCB)(resultCallback))(crlData->ctx, crlData->numOfResults,
 427                                                     crlData->resArr,
 428                                                     false);
 429              OICFree(crlData->resArr);
 430              OICFree(crlData);
 431              return OC_STACK_DELETE_TRANSACTION;
 432         }
 433     }
 434     registerResultForCRLProvisioning(crlData, OC_STACK_ERROR);
 435     ((OCProvisionResultCB)(resultCallback))(crlData->ctx, crlData->numOfResults,
 436                                             crlData->resArr,
 437                                             true);
 438     OIC_LOG_V(ERROR, TAG, "SRPProvisionCRLCB received Null clientResponse");
 439     OICFree(crlData->resArr);
 440     OICFree(crlData);
 441     return OC_STACK_DELETE_TRANSACTION;
 442 }
 443
 444 OCStackResult SRPProvisionCRL(void *ctx, const OCProvisionDev_t *selectedDeviceInfo,
 445         OicSecCrl_t *crl, OCProvisionResultCB resultCallback)
 446 {
 447     VERIFY_NON_NULL(TAG, selectedDeviceInfo, ERROR,  OC_STACK_INVALID_PARAM);
 448     VERIFY_NON_NULL(TAG, crl, ERROR,  OC_STACK_INVALID_PARAM);
 449     VERIFY_NON_NULL(TAG, resultCallback, ERROR,  OC_STACK_INVALID_CALLBACK);
 450
 451     OCSecurityPayload* secPayload = (OCSecurityPayload*)OICCalloc(1, sizeof(OCSecurityPayload));
 452     if (!secPayload)
 453     {
 454         OIC_LOG(ERROR, TAG, "Failed to memory allocation");
 455         return OC_STACK_NO_MEMORY;
 456     }
 457
 458     secPayload->base.type = PAYLOAD_TYPE_SECURITY;
 459     OCStackResult res = CrlToCBORPayload(crl, &secPayload->securityData1, &secPayload->payloadSize);
 460     if((OC_STACK_OK != res) && (NULL == secPayload->securityData1))
 461     {
 462         OICFree(secPayload);
 463         OIC_LOG(ERROR, TAG, "Failed to BinToCrlJSON");
 464         return OC_STACK_NO_MEMORY;
 465     }
 466     OIC_LOG_V(INFO, TAG, "CRL : %s", secPayload->securityData1);
 467
 468     char query[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};
 469     if(!PMGenerateQuery(true,
 470                         selectedDeviceInfo->endpoint.addr,
 471                         selectedDeviceInfo->securePort,
 472                         selectedDeviceInfo->connType,
 473                         query, sizeof(query), OIC_RSRC_CRL_URI))
 474     {
 475         OIC_LOG(ERROR, TAG, "DeviceDiscoveryHandler : Failed to generate query");
 476         OCPayloadDestroy((OCPayload *)secPayload);
 477         return OC_STACK_ERROR;
 478     }
 479     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
 480
 481     OCCallbackData cbData =  {.context=NULL, .cb=NULL, .cd=NULL};
 482     cbData.cb = &SRPProvisionCRLCB;
 483     CRLData_t *crlData = (CRLData_t *) OICCalloc(1, sizeof(CRLData_t));
 484     if (crlData == NULL)
 485     {
 486         OCPayloadDestroy((OCPayload *)secPayload);
 487         OIC_LOG(ERROR, TAG, "Unable to allocate memory");
 488         return OC_STACK_NO_MEMORY;
 489     }
 490
 491     crlData->deviceInfo = selectedDeviceInfo;
 492     crlData->resultCallback = resultCallback;
 493     crlData->numOfResults=0;
 494     crlData->ctx = ctx;
 495
 496     crlData->resArr = (OCProvisionResult_t*)OICCalloc(1, sizeof(OCProvisionResult_t));
 497     if (crlData->resArr == NULL)
 498     {
 499         OCPayloadDestroy((OCPayload *)secPayload);
 500         OIC_LOG(ERROR, TAG, "Unable to allocate memory");
 501         return OC_STACK_NO_MEMORY;
 502     }
 503
 504     cbData.context = (void *)crlData;
 505     cbData.cd = NULL;
 506     OCMethod method = OC_REST_POST;
 507     OCDoHandle handle = NULL;
 508     OIC_LOG(DEBUG, TAG, "Sending CRL info to resource server");
 509
 510     OCStackResult ret = OCDoResource(&handle, method, query,
 511             &selectedDeviceInfo->endpoint, (OCPayload*)secPayload,
 512             selectedDeviceInfo->connType, OC_HIGH_QOS, &cbData, NULL, 0);
 513
 514     if (ret != OC_STACK_OK)
 515     {
 516         OICFree(crlData->resArr);
 517         OICFree(crlData);
 518     }
 519
 520     return ret;
 521 }
 522
 523 /**
 524  * Internal function for handling credential generation and sending cretificate credential.
 525  *
 526  * @param[in] cred Instance of cred resource.
 527  * @param[in] deviceInfo information about device to which credential is to be provisioned.
 528  * @param[in] responseHandler callbak called by OC stack when request API receives response.
 529  * @return  OC_STACK_OK in case of success and other value otherwise.
 530  */
 531 static OCStackResult provisionCertCred(const OicSecCred_t *cred,
 532         const OCProvisionDev_t *deviceInfo, CertData_t *certData,
 533         OCClientResponseHandler responseHandler)
 534 {
 535     OCSecurityPayload* secPayload = (OCSecurityPayload*)OICCalloc(1, sizeof(OCSecurityPayload));
 536     if(!secPayload)
 537     {
 538         OIC_LOG(ERROR, TAG, "Failed to memory allocation");
 539         return OC_STACK_NO_MEMORY;
 540     }
 541     secPayload->base.type = PAYLOAD_TYPE_SECURITY;
 542     OCStackResult res = CredToCBORPayload(cred, &secPayload->securityData1,
 543         &secPayload->payloadSize);
 544
 545     if ((OC_STACK_OK != res) || (NULL == secPayload->securityData1))
 546     {
 547         OICFree(secPayload);
 548         OIC_LOG(ERROR, TAG, "Failed to CredToCBORPayload");
 549         return OC_STACK_NO_MEMORY;
 550     }
 551
 552     OIC_LOG_V(INFO, TAG, "Credential for provisioning : %s",secPayload->securityData1);
 553     char query[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};
 554     if(!PMGenerateQuery(true,
 555                         deviceInfo->endpoint.addr,
 556                         deviceInfo->securePort,
 557                         deviceInfo->connType,
 558                         query, sizeof(query), OIC_RSRC_CRED_URI))
 559     {
 560         OIC_LOG(ERROR, TAG, "DeviceDiscoveryHandler : Failed to generate query");
 561         OCPayloadDestroy((OCPayload *)secPayload);
 562         return OC_STACK_ERROR;
 563     }
 564     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
 565
 566     OCCallbackData cbData = {.context=NULL, .cb=NULL, .cd=NULL};
 567     cbData.cb = responseHandler;
 568     cbData.context = (void *) certData;
 569     cbData.cd = NULL;
 570
 571     OCDoHandle handle = NULL;
 572     OCMethod method = OC_REST_POST;
 573     OCStackResult ret = OCDoResource(&handle, method, query, 0, (OCPayload*)secPayload,
 574             deviceInfo->connType, OC_HIGH_QOS, &cbData, NULL, 0);
 575     OIC_LOG_V(INFO, TAG, "OCDoResource::Certificate provisioning returned : %d",ret);
 576     if (ret != OC_STACK_OK)
 577     {
 578         OIC_LOG(ERROR, TAG, "OCStack resource error");
 579     }
 580
 581     return ret;
 582 }
 583
 584 /**
 585  * Callback handler for handling callback of certificate provisioning device.
 586  *
 587  * @param[in] ctx             ctx value passed to callback from calling function.
 588  * @param[in] UNUSED          handle to an invocation
 589  * @param[in] clientResponse  Response from queries to remote servers.
 590  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction
 591  *          and  OC_STACK_KEEP_TRANSACTION to keep it.
 592  */
 593 static OCStackApplicationResult provisionCertCB(void *ctx, OCDoHandle UNUSED,
 594                                                        OCClientResponse *clientResponse)
 595 {
 596     VERIFY_NON_NULL(TAG, ctx, ERROR, OC_STACK_DELETE_TRANSACTION);
 597     CertData_t *certData = (CertData_t *) ctx;
 598     (void)UNUSED;
 599
 600     OCProvisionResultCB resultCallback = certData->resultCallback;
 601     OIC_LOG(INFO, TAG, "provisionCertCred called");
 602     if (clientResponse)
 603     {
 604         if(OC_STACK_RESOURCE_CREATED == clientResponse->result)
 605         {
 606             registerResultForCertProvisioning(certData, OC_STACK_RESOURCE_CREATED);
 607             ((OCProvisionResultCB)(resultCallback))(certData->ctx, certData->numOfResults,
 608                                                     certData->resArr,
 609                                                     false);
 610              OICFree(certData->resArr);
 611              OICFree(certData);
 612              return OC_STACK_DELETE_TRANSACTION;
 613         }
 614
 615     }
 616     OIC_LOG(INFO, TAG, "provisionCertCredCB received Null clientResponse");
 617     registerResultForCertProvisioning(certData, OC_STACK_ERROR);
 618     ((OCProvisionResultCB)(resultCallback))(certData->ctx, certData->numOfResults,
 619                                             certData->resArr,
 620                                             true);
 621     OICFree(certData->resArr);
 622     OICFree(certData);
 623     return OC_STACK_DELETE_TRANSACTION;
 624 }
 625 #endif // __WITH_X509__
 626
 627 OCStackResult SRPProvisionCredentials(void *ctx, OicSecCredType_t type, size_t keySize,
 628                                       const OCProvisionDev_t *pDev1,
 629                                       const OCProvisionDev_t *pDev2,
 630                                       OCProvisionResultCB resultCallback)
 631 {
 632     if (!pDev1 || !pDev2 || !pDev1->doxm || !pDev2->doxm)
 633     {
 634         OIC_LOG(INFO, TAG, "SRPUnlinkDevices : NULL parameters");
 635         return OC_STACK_INVALID_PARAM;
 636     }
 637     if (!resultCallback)
 638     {
 639         OIC_LOG(INFO, TAG, "SRPUnlinkDevices : NULL Callback");
 640         return OC_STACK_INVALID_CALLBACK;
 641     }
 642     if (0 == memcmp(&pDev1->doxm->deviceID, &pDev2->doxm->deviceID, sizeof(OicUuid_t)))
 643     {
 644         OIC_LOG(INFO, TAG, "SRPUnlinkDevices : Same device ID");
 645         return OC_STACK_INVALID_PARAM;
 646     }
 647
 648     if (SYMMETRIC_PAIR_WISE_KEY == type &&
 649        !(OWNER_PSK_LENGTH_128 == keySize || OWNER_PSK_LENGTH_256 == keySize))
 650     {
 651         OIC_LOG(INFO, TAG, "Invalid key size");
 652         return OC_STACK_INVALID_PARAM;
 653     }
 654
 655     OIC_LOG(INFO, TAG, "In SRPProvisionCredentials");
 656
 657     if (SYMMETRIC_PAIR_WISE_KEY == type)
 658     {
 659         bool linkExisits = true;
 660         OCStackResult res = PDMIsLinkExists(&pDev1->doxm->deviceID, &pDev2->doxm->deviceID, &linkExisits);
 661
 662         if (res != OC_STACK_OK)
 663         {
 664             OIC_LOG(ERROR, TAG, "Internal error occured");
 665             return res;
 666         }
 667         if (linkExisits)
 668         {
 669             OIC_LOG(ERROR, TAG, "Link already exists");
 670             return OC_STACK_INVALID_PARAM;
 671         }
 672     }
 673
 674     OicUuid_t provTooldeviceID =   {{0,}};
 675     if (OC_STACK_OK != GetDoxmDeviceID(&provTooldeviceID))
 676     {
 677         OIC_LOG(ERROR, TAG, "Error while retrieving provisioning tool's device ID");
 678         return OC_STACK_ERROR;
 679     }
 680     OIC_LOG(INFO, TAG, "retrieved deviceid");
 681     switch (type)
 682     {
 683         case SYMMETRIC_PAIR_WISE_KEY:
 684         {
 685             const OCProvisionDev_t *firstDevice = pDev1;
 686             const OCProvisionDev_t *secondDevice = pDev2;
 687
 688             OicSecCred_t *firstCred = NULL;
 689             OicSecCred_t *secondCred = NULL;
 690             OCStackResult res = PMGeneratePairWiseCredentials(type, keySize, &provTooldeviceID,
 691                     &firstDevice->doxm->deviceID, &secondDevice->doxm->deviceID,
 692                     &firstCred, &secondCred);
 693             VERIFY_SUCCESS(TAG, (res==OC_STACK_OK), ERROR, OC_STACK_ERROR);
 694             OIC_LOG(INFO, TAG, "Credentials generated successfully");
 695             CredentialData_t *credData =
 696                 (CredentialData_t *) OICCalloc(1, sizeof(CredentialData_t));
 697             if (NULL == credData)
 698             {
 699                 OICFree(firstCred);
 700                 OICFree(secondCred);
 701                 OIC_LOG(ERROR, TAG, "Memory allocation problem");
 702                 return OC_STACK_NO_MEMORY;
 703             }
 704             credData->deviceInfo1 = firstDevice;
 705             credData->deviceInfo2 = secondDevice;
 706             credData->credInfo = secondCred;
 707             credData->ctx = ctx;
 708             credData->credInfoFirst = firstCred;
 709             credData->numOfResults = 0;
 710             credData->resultCallback = resultCallback;
 711             // first call to provision creds to device1.
 712             // second call to provision creds to device2.
 713             int noOfRiCalls = 2;
 714             credData->resArr =
 715                 (OCProvisionResult_t*)OICCalloc(noOfRiCalls, sizeof(OCProvisionResult_t));
 716             if (NULL == credData->resArr)
 717             {
 718                 OICFree(firstCred);
 719                 OICFree(secondCred);
 720                 OICFree(credData);
 721                 OIC_LOG(ERROR, TAG, "Memory allocation problem");
 722                 return OC_STACK_NO_MEMORY;
 723             }
 724             res = provisionCredentials(firstCred, firstDevice, credData, &provisionCredentialCB1);
 725             if (OC_STACK_OK != res)
 726             {
 727                 DeleteCredList(firstCred);
 728                 DeleteCredList(secondCred);
 729                 OICFree(credData->resArr);
 730                 OICFree(credData);
 731             }
 732             OIC_LOG_V(INFO, TAG, "provisionCredentials returned: %d",res);
 733             VERIFY_SUCCESS(TAG, (res==OC_STACK_OK), ERROR, OC_STACK_ERROR);
 734             return res;
 735         }
 736 #ifdef __WITH_X509__
 737         case SIGNED_ASYMMETRIC_KEY:
 738         {
 739             const OCProvisionDev_t *firstDevice = pDev1;
 740             OicSecCred_t *cred = NULL;
 741             OCStackResult res = PMGenerateCertificateCredentials(&provTooldeviceID,
 742                                                                 &firstDevice->doxm->deviceID,&cred);
 743             VERIFY_SUCCESS(TAG, (res==OC_STACK_OK), ERROR, OC_STACK_ERROR);
 744             OIC_LOG(INFO, TAG, "Certificate credentials generated successfully");
 745             CertData_t *certData = (CertData_t *) OICCalloc(1, sizeof(CertData_t));
 746             if (NULL == certData)
 747             {
 748                 OICFree(cred);
 749                 OIC_LOG(ERROR, TAG, "Memory allocation problem");
 750                 return OC_STACK_NO_MEMORY;
 751             }
 752
 753             certData->deviceInfo = firstDevice;
 754             certData->ctx = ctx;
 755             certData->credInfo = cred;
 756             certData->numOfResults = 0;
 757             certData->resultCallback = resultCallback;
 758
 759             certData->resArr = (OCProvisionResult_t*)OICCalloc(1, sizeof(OCProvisionResult_t));
 760             if (NULL == certData->resArr)
 761             {
 762                 DeleteCredList(cred);
 763                 OICFree(certData);
 764                 OIC_LOG(ERROR, TAG, "Memory allocation problem");
 765                 return OC_STACK_NO_MEMORY;
 766             }
 767
 768             res = provisionCertCred(cred, firstDevice, certData, &provisionCertCB);
 769             if (OC_STACK_OK != res)
 770             {
 771                 OICFree(certData->resArr);
 772                 OICFree(certData);
 773             }
 774             DeleteCredList(cred);
 775             OIC_LOG_V(INFO, TAG, "provisionCertCredentials returned: %d",res);
 776
 777             return res;
 778         }
 779 #endif
 780         default:
 781         {
 782             OIC_LOG(ERROR, TAG, "Invalid option.");
 783             return OC_STACK_INVALID_PARAM;
 784         }
 785     }
 786     return OC_STACK_ERROR;
 787 }
 788
 789 /**
 790  * Internal Function to store results in result array during ACL provisioning.
 791  */
 792 static void registerResultForACLProvisioning(ACLData_t *aclData,
 793                                              OCStackResult stackresult)
 794 {
 795    OIC_LOG_V(INFO, TAG, "Inside registerResultForACLProvisioning aclData->numOfResults is %d\n",
 796                        aclData->numOfResults);
 797    memcpy(aclData->resArr[(aclData->numOfResults)].deviceId.id,
 798           aclData->deviceInfo->doxm->deviceID.id, UUID_LENGTH);
 799    aclData->resArr[(aclData->numOfResults)].res = stackresult;
 800    ++(aclData->numOfResults);
 801 }
 802
 803 /**
 804  * Callback handler of SRPProvisionACL.
 805  *
 806  * @param[in] ctx             ctx value passed to callback from calling function.
 807  * @param[in] UNUSED          handle to an invocation
 808  * @param[in] clientResponse  Response from queries to remote servers.
 809  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction
 810  *          and  OC_STACK_KEEP_TRANSACTION to keep it.
 811  */
 812 static OCStackApplicationResult SRPProvisionACLCB(void *ctx, OCDoHandle UNUSED,
 813                                                   OCClientResponse *clientResponse)
 814 {
 815     OIC_LOG_V(INFO, TAG, "Inside SRPProvisionACLCB.");
 816     (void)UNUSED;
 817     VERIFY_NON_NULL(TAG, ctx, ERROR, OC_STACK_DELETE_TRANSACTION);
 818     ACLData_t *aclData = (ACLData_t*)ctx;
 819     OCProvisionResultCB resultCallback = aclData->resultCallback;
 820
 821     if (clientResponse)
 822     {
 823         if(OC_STACK_RESOURCE_CREATED == clientResponse->result)
 824         {
 825             registerResultForACLProvisioning(aclData, OC_STACK_RESOURCE_CREATED);
 826             ((OCProvisionResultCB)(resultCallback))(aclData->ctx, aclData->numOfResults,
 827                                                     aclData->resArr,
 828                                                     false);
 829              OICFree(aclData->resArr);
 830              OICFree(aclData);
 831              return OC_STACK_DELETE_TRANSACTION;
 832         }
 833     }
 834     registerResultForACLProvisioning(aclData, OC_STACK_ERROR);
 835     ((OCProvisionResultCB)(resultCallback))(aclData->ctx, aclData->numOfResults,
 836                                             aclData->resArr,
 837                                             true);
 838     OIC_LOG_V(ERROR, TAG, "SRPProvisionACLCB received Null clientResponse");
 839     OICFree(aclData->resArr);
 840     OICFree(aclData);
 841     return OC_STACK_DELETE_TRANSACTION;
 842 }
 843
 844 OCStackResult SRPProvisionACL(void *ctx, const OCProvisionDev_t *selectedDeviceInfo,
 845         OicSecAcl_t *acl, OCProvisionResultCB resultCallback)
 846 {
 847     VERIFY_NON_NULL(TAG, selectedDeviceInfo, ERROR,  OC_STACK_INVALID_PARAM);
 848     VERIFY_NON_NULL(TAG, acl, ERROR,  OC_STACK_INVALID_PARAM);
 849     VERIFY_NON_NULL(TAG, resultCallback, ERROR,  OC_STACK_INVALID_CALLBACK);
 850
 851     OCSecurityPayload* secPayload = (OCSecurityPayload*)OICCalloc(1, sizeof(OCSecurityPayload));
 852     if(!secPayload)
 853     {
 854         OIC_LOG(ERROR, TAG, "Failed to memory allocation");
 855         return OC_STACK_NO_MEMORY;
 856     }
 857     secPayload->base.type = PAYLOAD_TYPE_SECURITY;
 858     if(OC_STACK_OK != AclToCBORPayload(acl, &secPayload->securityData1, &secPayload->payloadSize))
 859     {
 860         OCPayloadDestroy((OCPayload *)secPayload);
 861         OIC_LOG(ERROR, TAG, "Failed to AclToCBORPayload");
 862         return OC_STACK_NO_MEMORY;
 863     }
 864     char query[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};
 865     if(!PMGenerateQuery(true,
 866                         selectedDeviceInfo->endpoint.addr,
 867                         selectedDeviceInfo->securePort,
 868                         selectedDeviceInfo->connType,
 869                         query, sizeof(query), OIC_RSRC_ACL_URI))
 870     {
 871         OIC_LOG(ERROR, TAG, "DeviceDiscoveryHandler : Failed to generate query");
 872         return OC_STACK_ERROR;
 873     }
 874     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
 875
 876     OCCallbackData cbData =  {.context=NULL, .cb=NULL, .cd=NULL};
 877     cbData.cb = &SRPProvisionACLCB;
 878     ACLData_t *aclData = (ACLData_t *) OICCalloc(1, sizeof(ACLData_t));
 879     if (aclData == NULL)
 880     {
 881         OCPayloadDestroy((OCPayload *)secPayload);
 882         OIC_LOG(ERROR, TAG, "Unable to allocate memory");
 883         return OC_STACK_NO_MEMORY;
 884     }
 885     aclData->deviceInfo = selectedDeviceInfo;
 886     aclData->resultCallback = resultCallback;
 887     aclData->numOfResults=0;
 888     aclData->ctx = ctx;
 889     // call to provision ACL to device1.
 890     int noOfRiCalls = 1;
 891     aclData->resArr = (OCProvisionResult_t*)OICCalloc(noOfRiCalls, sizeof(OCProvisionResult_t));
 892     if (aclData->resArr == NULL)
 893     {
 894         OICFree(aclData);
 895         OCPayloadDestroy((OCPayload *)secPayload);
 896         OIC_LOG(ERROR, TAG, "Unable to allocate memory");
 897         return OC_STACK_NO_MEMORY;
 898     }
 899     cbData.context = (void *)aclData;
 900     cbData.cd = NULL;
 901     OCMethod method = OC_REST_POST;
 902     OCDoHandle handle = NULL;
 903     OIC_LOG(DEBUG, TAG, "Sending ACL info to resource server");
 904     OCStackResult ret = OCDoResource(&handle, method, query,
 905             &selectedDeviceInfo->endpoint, (OCPayload*)secPayload,
 906             selectedDeviceInfo->connType, OC_HIGH_QOS, &cbData, NULL, 0);
 907     if (ret != OC_STACK_OK)
 908     {
 909         OICFree(aclData->resArr);
 910         OICFree(aclData);
 911     }
 912     VERIFY_SUCCESS(TAG, (OC_STACK_OK == ret), ERROR, OC_STACK_ERROR);
 913     return OC_STACK_OK;
 914 }
 915
 916 /**
 917  * Internal Function to store results in result array during Direct-Pairing provisioning.
 918  */
 919 static void registerResultForDirectPairingProvisioning(PconfData_t *pconfData,
 920                                              OCStackResult stackresult)
 921 {
 922    OIC_LOG_V(INFO, TAG, "Inside registerResultForDirectPairingProvisioning "
 923            "pconfData->numOfResults is %d\n", pconfData->numOfResults);
 924    memcpy(pconfData->resArr[(pconfData->numOfResults)].deviceId.id,
 925           pconfData->deviceInfo->doxm->deviceID.id, UUID_LENGTH);
 926    pconfData->resArr[(pconfData->numOfResults)].res = stackresult;
 927    ++(pconfData->numOfResults);
 928 }
 929
 930 /**
 931  * Callback handler of SRPProvisionDirectPairing.
 932  *
 933  * @param[in] ctx             ctx value passed to callback from calling function.
 934  * @param[in] UNUSED          handle to an invocation
 935  * @param[in] clientResponse  Response from queries to remote servers.
 936  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction
 937  *          and  OC_STACK_KEEP_TRANSACTION to keep it.
 938  */
 939 static OCStackApplicationResult SRPProvisionDirectPairingCB(void *ctx, OCDoHandle UNUSED,
 940                                                   OCClientResponse *clientResponse)
 941 {
 942     OIC_LOG_V(INFO, TAG, "Inside SRPProvisionDirectPairingCB.");
 943     (void)UNUSED;
 944     VERIFY_NON_NULL(TAG, ctx, ERROR, OC_STACK_DELETE_TRANSACTION);
 945     PconfData_t *pconfData = (PconfData_t*)ctx;
 946     OCProvisionResultCB resultCallback = pconfData->resultCallback;
 947
 948     if (clientResponse)
 949     {
 950         if(OC_STACK_RESOURCE_CREATED == clientResponse->result)
 951         {
 952             registerResultForDirectPairingProvisioning(pconfData, OC_STACK_RESOURCE_CREATED);
 953             ((OCProvisionResultCB)(resultCallback))(pconfData->ctx, pconfData->numOfResults,
 954                                                     pconfData->resArr,
 955                                                     false);
 956              OICFree(pconfData->resArr);
 957              OICFree(pconfData);
 958              return OC_STACK_DELETE_TRANSACTION;
 959         }
 960     }
 961     registerResultForDirectPairingProvisioning(pconfData, OC_STACK_ERROR);
 962     ((OCProvisionResultCB)(resultCallback))(pconfData->ctx, pconfData->numOfResults,
 963                                             pconfData->resArr,
 964                                             true);
 965     OIC_LOG_V(ERROR, TAG, "SRPProvisionDirectPairingCB received Null clientResponse");
 966     OICFree(pconfData->resArr);
 967     OICFree(pconfData);
 968     return OC_STACK_DELETE_TRANSACTION;
 969 }
 970
 971 OCStackResult SRPProvisionDirectPairing(void *ctx, const OCProvisionDev_t *selectedDeviceInfo,
 972         OicSecPconf_t *pconf, OCProvisionResultCB resultCallback)
 973 {
 974     VERIFY_NON_NULL(TAG, selectedDeviceInfo, ERROR,  OC_STACK_INVALID_PARAM);
 975     VERIFY_NON_NULL(TAG, pconf, ERROR,  OC_STACK_INVALID_PARAM);
 976     VERIFY_NON_NULL(TAG, resultCallback, ERROR,  OC_STACK_INVALID_CALLBACK);
 977
 978     // check direct-pairing capability
 979     if (true != selectedDeviceInfo->doxm->dpc)
 980     {
 981         OIC_LOG(ERROR, TAG, "Resouce server does not have Direct-Pairing Capability ");
 982         return OC_STACK_UNAUTHORIZED_REQ;
 983     }
 984
 985     OicUuid_t provTooldeviceID =   {.id={0}};
 986     if (OC_STACK_OK != GetDoxmDeviceID(&provTooldeviceID))
 987     {
 988         OIC_LOG(ERROR, TAG, "Error while retrieving provisioning tool's device ID");
 989         return OC_STACK_ERROR;
 990     }
 991     memcpy(&pconf->rowner, &provTooldeviceID, sizeof(OicUuid_t));
 992
 993     OCSecurityPayload* secPayload = (OCSecurityPayload*)OICCalloc(1, sizeof(OCSecurityPayload));
 994     if(!secPayload)
 995     {
 996         OIC_LOG(ERROR, TAG, "Failed to memory allocation");
 997         return OC_STACK_NO_MEMORY;
 998     }
 999     secPayload->base.type = PAYLOAD_TYPE_SECURITY;
1000
1001     if (OC_STACK_OK != PconfToCBORPayload(pconf, &(secPayload->securityData1),
1002                 &(secPayload->payloadSize)))
1003     {
1004         OCPayloadDestroy((OCPayload*)secPayload);
1005         OIC_LOG(ERROR, TAG, "Failed to PconfToCborPayload");
1006         return OC_STACK_NO_MEMORY;
1007     }
1008     OIC_LOG_V(INFO, TAG, "PCONF : %s", secPayload->securityData1);
1009
1010     char query[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};
1011     if(!PMGenerateQuery(true,
1012                 selectedDeviceInfo->endpoint.addr,
1013                 selectedDeviceInfo->securePort,
1014                 selectedDeviceInfo->connType,
1015                 query, sizeof(query), OIC_RSRC_PCONF_URI))
1016     {
1017         OIC_LOG(ERROR, TAG, "SRPProvisionDirectPairing : Failed to generate query");
1018         return OC_STACK_ERROR;
1019     }
1020     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
1021
1022     OCCallbackData cbData =  {.context=NULL, .cb=NULL, .cd=NULL};
1023     cbData.cb = &SRPProvisionDirectPairingCB;
1024     PconfData_t *pconfData = (PconfData_t *) OICCalloc(1, sizeof(PconfData_t));
1025     if (NULL == pconfData)
1026     {
1027         OCPayloadDestroy((OCPayload*)secPayload);
1028         OIC_LOG(ERROR, TAG, "Unable to allocate memory");
1029         return OC_STACK_NO_MEMORY;
1030     }
1031     pconfData->deviceInfo = selectedDeviceInfo;
1032     pconfData->resultCallback = resultCallback;
1033     pconfData->numOfResults=0;
1034     pconfData->ctx = ctx;
1035     // call to provision PCONF to device1.
1036     int noOfRiCalls = 1;
1037     pconfData->resArr = (OCProvisionResult_t*)OICCalloc(noOfRiCalls, sizeof(OCProvisionResult_t));
1038     if (NULL == pconfData->resArr)
1039     {
1040         OICFree(pconfData);
1041         OCPayloadDestroy((OCPayload*)secPayload);
1042         OIC_LOG(ERROR, TAG, "Unable to allocate memory");
1043         return OC_STACK_NO_MEMORY;
1044     }
1045     cbData.context = (void *)pconfData;
1046     cbData.cd = NULL;
1047     OCMethod method = OC_REST_POST;
1048     OCDoHandle handle = NULL;
1049     OIC_LOG(DEBUG, TAG, "Sending PCONF info to resource server");
1050     OCStackResult ret = OCDoResource(&handle, method, query,
1051             &selectedDeviceInfo->endpoint, (OCPayload*)secPayload,
1052             selectedDeviceInfo->connType, OC_LOW_QOS, &cbData, NULL, 0);
1053     if (OC_STACK_OK != ret)
1054     {
1055         OICFree(pconfData->resArr);
1056         OICFree(pconfData);
1057     }
1058     VERIFY_SUCCESS(TAG, (OC_STACK_OK == ret), ERROR, OC_STACK_ERROR);
1059     return OC_STACK_OK;
1060 }
1061
1062 static void DeleteUnlinkData_t(UnlinkData_t *unlinkData)
1063 {
1064     if (unlinkData)
1065     {
1066         OICFree(unlinkData->unlinkDev);
1067         OICFree(unlinkData->unlinkRes);
1068         OICFree(unlinkData);
1069     }
1070 }
1071
1072 static void registerResultForUnlinkDevices(UnlinkData_t *unlinkData, OCStackResult stackresult,
1073                                            IdxUnlinkRes_t idx)
1074 {
1075     if (NULL != unlinkData)
1076     {
1077         OIC_LOG_V(INFO, TAG, "Inside registerResultForUnlinkDevices unlinkData->numOfResults is %d\n",
1078                             unlinkData->numOfResults);
1079         OIC_LOG_V(INFO, TAG, "Stack result :: %d", stackresult);
1080
1081         OicUuid_t *pUuid = &unlinkData->unlinkRes[(unlinkData->numOfResults)].deviceId;
1082
1083         // Set result in the result array according to the position (devNum).
1084         if (idx != IDX_DB_UPDATE_RES)
1085         {
1086             memcpy(pUuid->id, unlinkData->unlinkDev[idx].doxm->deviceID.id, sizeof(pUuid->id));
1087         }
1088         else
1089         {   // When deivce ID is 000... this means it's the result of database update.
1090             memset(pUuid->id, 0, sizeof(pUuid->id));
1091         }
1092         unlinkData->unlinkRes[(unlinkData->numOfResults)].res = stackresult;
1093         ++(unlinkData->numOfResults);
1094         OIC_LOG (INFO, TAG, "Out registerResultForUnlinkDevices");
1095     }
1096 }
1097
1098 static OCStackResult SendDeleteCredentialRequest(void* ctx,
1099                                                  OCClientResponseHandler respHandler,
1100                                                  const OCProvisionDev_t* revokedDev,
1101                                                  const OCProvisionDev_t* destDev)
1102 {
1103     OIC_LOG(DEBUG, TAG, "IN SendDeleteCredentialRequest");
1104
1105     if (NULL == ctx || NULL == respHandler || NULL == revokedDev || NULL == destDev)
1106     {
1107         return OC_STACK_INVALID_PARAM;
1108     }
1109
1110     char *subID = NULL;
1111     OCStackResult ret = ConvertUuidToStr(&revokedDev->doxm->deviceID, &subID);
1112     if(OC_STACK_OK != ret)
1113     {
1114         OIC_LOG(ERROR, TAG, "SendDeleteCredentialRequest : Failed to canonical UUID encoding");
1115         return OC_STACK_ERROR;
1116     }
1117
1118     char reqBuf[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};
1119     int snRet = 0;
1120                     //coaps://0.0.0.0:5684/oic/sec/cred?subjectid=(Canonical ENCODED UUID)
1121     snRet = snprintf(reqBuf, sizeof(reqBuf), SRP_FORM_DELETE_CREDENTIAL, destDev->endpoint.addr,
1122                      destDev->securePort, OIC_RSRC_CRED_URI, OIC_JSON_SUBJECTID_NAME, subID);
1123     OICFree(subID);
1124     if (snRet < 0)
1125     {
1126         OIC_LOG_V(ERROR, TAG, "SendDeleteCredentialRequest : Error (snprintf) %d\n", snRet);
1127         return OC_STACK_ERROR;
1128     }
1129     else if ((size_t)snRet >= sizeof(reqBuf))
1130     {
1131         OIC_LOG_V(ERROR, TAG, "SendDeleteCredentialRequest : Truncated (snprintf) %d\n", snRet);
1132         return OC_STACK_ERROR;
1133     }
1134
1135     OCCallbackData cbData;
1136     memset(&cbData, 0, sizeof(cbData));
1137     cbData.context = ctx;
1138     cbData.cb = respHandler;
1139     cbData.cd = NULL;
1140     OIC_LOG_V(INFO, TAG, "URI: %s",reqBuf);
1141
1142     OIC_LOG(DEBUG, TAG, "Sending remove credential request to resource server");
1143
1144     ret = OCDoResource(NULL, OC_REST_DELETE, reqBuf,
1145                                      &destDev->endpoint, NULL,
1146                                      CT_ADAPTER_IP, OC_HIGH_QOS, &cbData, NULL, 0);
1147     if (OC_STACK_OK != ret)
1148     {
1149         OIC_LOG_V(ERROR, TAG, "SendDeleteCredentialRequest : Error in OCDoResource %d", ret);
1150     }
1151     OIC_LOG(DEBUG, TAG, "OUT SendDeleteCredentialRequest");
1152
1153     return ret;
1154 }
1155
1156 /**
1157  * Callback handler of unlink second device.
1158  *
1159  * @param[in] ctx             ctx value passed to callback from calling function.
1160  * @param[in] handle          handle to an invocation
1161  * @param[in] clientResponse  Response from queries to remote servers.
1162  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction and
1163  *          OC_STACK_KEEP_TRANSACTION to keep it.
1164  */
1165 static OCStackApplicationResult SRPUnlinkDevice2CB(void *unlinkCtx, OCDoHandle handle,
1166         OCClientResponse *clientResponse)
1167 {
1168     (void) handle;
1169     OIC_LOG(DEBUG, TAG, "IN SRPUnlinkDevice2CB");
1170     VERIFY_NON_NULL(TAG, unlinkCtx, ERROR, OC_STACK_DELETE_TRANSACTION);
1171     UnlinkData_t* unlinkData = (UnlinkData_t*)unlinkCtx;
1172
1173     if (clientResponse)
1174     {
1175         OIC_LOG(DEBUG, TAG, "Valid client response for device 2");
1176         registerResultForUnlinkDevices(unlinkData, clientResponse->result, IDX_SECOND_DEVICE_RES);
1177
1178         if (OC_STACK_RESOURCE_DELETED == clientResponse->result)
1179         {
1180             OIC_LOG(DEBUG, TAG, "Credential of device2 revoked");
1181         }
1182         else
1183         {
1184             OIC_LOG(ERROR, TAG, "Unable to delete credential information from device 2");
1185             unlinkData->resultCallback(unlinkData->ctx,
1186                                        unlinkData->numOfResults, unlinkData->unlinkRes, true);
1187             goto error;
1188         }
1189     }
1190     else
1191     {
1192         registerResultForUnlinkDevices(unlinkData, OC_STACK_INVALID_REQUEST_HANDLE,
1193                                        IDX_SECOND_DEVICE_RES);
1194         unlinkData->resultCallback(unlinkData->ctx,
1195                                    unlinkData->numOfResults, unlinkData->unlinkRes, true);
1196         OIC_LOG(ERROR, TAG, "SRPUnlinkDevice2CB received Null clientResponse");
1197         goto error;
1198     }
1199
1200     //Update provisioning DB when succes case.
1201     if (OC_STACK_OK != PDMUnlinkDevices(&unlinkData->unlinkDev[0].doxm->deviceID,
1202                                        &unlinkData->unlinkDev[1].doxm->deviceID))
1203     {
1204         OIC_LOG(FATAL, TAG, "All requests are successfully done but update provisioning DB FAILED.");
1205         registerResultForUnlinkDevices(unlinkData, OC_STACK_INCONSISTENT_DB, IDX_DB_UPDATE_RES);
1206         unlinkData->resultCallback(unlinkData->ctx,
1207                                    unlinkData->numOfResults, unlinkData->unlinkRes, true);
1208         goto error;
1209     }
1210     unlinkData->resultCallback(unlinkData->ctx, unlinkData->numOfResults, unlinkData->unlinkRes,
1211                                false);
1212
1213 error:
1214     DeleteUnlinkData_t(unlinkData);
1215     OIC_LOG(DEBUG, TAG, "OUT SRPUnlinkDevice2CB");
1216     return OC_STACK_DELETE_TRANSACTION;
1217
1218 }
1219
1220 /**
1221  * Callback handler of unlink first device.
1222  *
1223  * @param[in] ctx             ctx value passed to callback from calling function.
1224  * @param[in] handle          handle to an invocation
1225  * @param[in] clientResponse  Response from queries to remote servers.
1226  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction and
1227  *          OC_STACK_KEEP_TRANSACTION to keep it.
1228  */
1229 static OCStackApplicationResult SRPUnlinkDevice1CB(void *unlinkCtx, OCDoHandle handle,
1230         OCClientResponse *clientResponse)
1231 {
1232     OIC_LOG_V(INFO, TAG, "Inside SRPUnlinkDevice1CB ");
1233     VERIFY_NON_NULL(TAG, unlinkCtx, ERROR, OC_STACK_DELETE_TRANSACTION);
1234     UnlinkData_t* unlinkData = (UnlinkData_t*)unlinkCtx;
1235     (void) handle;
1236
1237     if (clientResponse)
1238     {
1239         OIC_LOG(DEBUG, TAG, "Valid client response for device 1");
1240         registerResultForUnlinkDevices(unlinkData, clientResponse->result, IDX_FIRST_DEVICE_RES);
1241
1242         if (OC_STACK_RESOURCE_DELETED == clientResponse->result)
1243         {
1244             OIC_LOG(DEBUG, TAG, "Credential of device 1 is revoked");
1245
1246             // Second revocation request to second device.
1247             OCStackResult res = SendDeleteCredentialRequest((void*)unlinkData, &SRPUnlinkDevice2CB,
1248                                                     &unlinkData->unlinkDev[0],
1249                                                     &unlinkData->unlinkDev[1] /*Dest*/);
1250             OIC_LOG_V(DEBUG, TAG, "Credential revocation request device 2, result :: %d",res);
1251             if (OC_STACK_OK != res)
1252             {
1253                  OIC_LOG(ERROR, TAG, "Error while sending revocation request for device 2");
1254                  registerResultForUnlinkDevices(unlinkData, OC_STACK_INVALID_REQUEST_HANDLE,
1255                                                 IDX_SECOND_DEVICE_RES);
1256                  unlinkData->resultCallback(unlinkData->ctx,
1257                                             unlinkData->numOfResults, unlinkData->unlinkRes, true);
1258                  goto error;
1259             }
1260             else
1261             {
1262                 OIC_LOG(DEBUG, TAG, "Request for credential revocation successfully sent");
1263                 return OC_STACK_DELETE_TRANSACTION;
1264             }
1265         }
1266         else
1267         {
1268             OIC_LOG(ERROR, TAG, "Unable to delete credential information from device 1");
1269
1270             unlinkData->resultCallback(unlinkData->ctx, unlinkData->numOfResults,
1271                                             unlinkData->unlinkRes, true);
1272             goto error;
1273         }
1274     }
1275     else
1276     {
1277         OIC_LOG(DEBUG, TAG, "Invalid response from server");
1278         registerResultForUnlinkDevices(unlinkData, OC_STACK_INVALID_REQUEST_HANDLE,
1279                                        IDX_FIRST_DEVICE_RES );
1280         unlinkData->resultCallback(unlinkData->ctx,
1281                                    unlinkData->numOfResults, unlinkData->unlinkRes,
1282                                    true);
1283         OIC_LOG(ERROR, TAG, "SRPUnlinkDevice1CB received Null clientResponse");
1284     }
1285
1286 error:
1287     OIC_LOG_V(INFO, TAG, "Out SRPUnlinkDevice1CB");
1288     DeleteUnlinkData_t(unlinkData);
1289     return OC_STACK_DELETE_TRANSACTION;
1290 }
1291
1292 /*
1293 * Function to unlink devices.
1294 * This function will remove the credential & relationship between the two devices.
1295 *
1296 * @param[in] ctx Application context would be returned in result callback
1297 * @param[in] pTargetDev1 first device information to be unlinked.
1298 * @param[in] pTargetDev2 second device information to be unlinked.
1299 * @param[in] resultCallback callback provided by API user, callback will be called when
1300 *            device unlink is finished.
1301  * @return  OC_STACK_OK in case of success and other value otherwise.
1302 */
1303 OCStackResult SRPUnlinkDevices(void* ctx,
1304                                const OCProvisionDev_t* pTargetDev1,
1305                                const OCProvisionDev_t* pTargetDev2,
1306                                OCProvisionResultCB resultCallback)
1307 {
1308     OIC_LOG(INFO, TAG, "IN SRPUnlinkDevices");
1309
1310     if (!pTargetDev1 || !pTargetDev2 || !pTargetDev1->doxm || !pTargetDev2->doxm)
1311     {
1312         OIC_LOG(INFO, TAG, "SRPUnlinkDevices : NULL parameters");
1313         return OC_STACK_INVALID_PARAM;
1314     }
1315     if (!resultCallback)
1316     {
1317         OIC_LOG(INFO, TAG, "SRPUnlinkDevices : NULL Callback");
1318         return OC_STACK_INVALID_CALLBACK;
1319     }
1320     if (0 == memcmp(&pTargetDev1->doxm->deviceID, &pTargetDev2->doxm->deviceID, sizeof(OicUuid_t)))
1321     {
1322         OIC_LOG(INFO, TAG, "SRPUnlinkDevices : Same device ID");
1323         return OC_STACK_INVALID_PARAM;
1324     }
1325
1326     OIC_LOG(INFO, TAG, "Unlinking following devices: ");
1327     PMPrintOCProvisionDev(pTargetDev1);
1328     PMPrintOCProvisionDev(pTargetDev2);
1329
1330     // Mark the link status stale
1331     OCStackResult res = PDMSetLinkStale(&pTargetDev1->doxm->deviceID, &pTargetDev2->doxm->deviceID);
1332     if (OC_STACK_OK != res)
1333     {
1334         OIC_LOG(FATAL, TAG, "unable to update DB. Try again.");
1335         return res;
1336     }
1337
1338     UnlinkData_t* unlinkData = (UnlinkData_t*)OICCalloc(1, sizeof(UnlinkData_t));
1339     VERIFY_NON_NULL(TAG, unlinkData, ERROR, OC_STACK_NO_MEMORY);
1340
1341     //Initialize unlink data
1342     unlinkData->ctx = ctx;
1343     unlinkData->unlinkDev = (OCProvisionDev_t*)OICCalloc(2, sizeof(OCProvisionDev_t));
1344     if (NULL == unlinkData->unlinkDev)
1345     {
1346         OIC_LOG(ERROR, TAG, "Memory allocation failed");
1347         res = OC_STACK_NO_MEMORY;
1348         goto error;
1349     }
1350
1351     unlinkData->unlinkRes = (OCProvisionResult_t*)OICCalloc(3, sizeof(OCProvisionResult_t));
1352     if (NULL == unlinkData->unlinkRes)
1353     {
1354         OIC_LOG(ERROR, TAG, "Memory allocation failed");
1355         res = OC_STACK_NO_MEMORY;
1356         goto error;
1357     }
1358
1359     memcpy(&unlinkData->unlinkDev[0], pTargetDev1, sizeof(OCProvisionDev_t));
1360     memcpy(&unlinkData->unlinkDev[1], pTargetDev2, sizeof(OCProvisionDev_t));
1361
1362     unlinkData->numOfResults = 0;
1363     unlinkData->resultCallback = resultCallback;
1364
1365     res = SendDeleteCredentialRequest((void*)unlinkData, &SRPUnlinkDevice1CB,
1366                                        &unlinkData->unlinkDev[1], &unlinkData->unlinkDev[0]);
1367     if (OC_STACK_OK != res)
1368     {
1369         OIC_LOG(ERROR, TAG, "SRPUnlinkDevices : SendDeleteCredentialRequest failed");
1370         goto error;
1371     }
1372
1373     return res;
1374
1375 error:
1376     OIC_LOG(INFO, TAG, "OUT SRPUnlinkDevices");
1377     DeleteUnlinkData_t(unlinkData);
1378     return res;
1379 }
1380
1381 static void DeleteRemoveData_t(RemoveData_t* pRemoveData)
1382 {
1383     if (pRemoveData)
1384     {
1385         OICFree(pRemoveData->revokeTargetDev);
1386         OCDeleteDiscoveredDevices(pRemoveData->linkedDevList);
1387         OICFree(pRemoveData->removeRes);
1388         OICFree(pRemoveData);
1389     }
1390 }
1391
1392 static void registerResultForRemoveDevice(RemoveData_t *removeData, OicUuid_t *pLinkedDevId,
1393                                           OCStackResult stackresult, bool hasError)
1394 {
1395     OIC_LOG_V(INFO, TAG, "Inside registerResultForRemoveDevice removeData->numOfResults is %zu\n",
1396                          removeData->numOfResults + 1);
1397     if (pLinkedDevId)
1398     {
1399         memcpy(removeData->removeRes[(removeData->numOfResults)].deviceId.id,
1400                &pLinkedDevId->id, sizeof(pLinkedDevId->id));
1401     }
1402     else
1403     {
1404         memset(removeData->removeRes[(removeData->numOfResults)].deviceId.id,
1405                0, sizeof(pLinkedDevId->id) );
1406     }
1407     removeData->removeRes[(removeData->numOfResults)].res = stackresult;
1408     removeData->hasError = hasError;
1409     ++(removeData->numOfResults);
1410
1411     // If we get suffcient result from linked devices, we have to call user callback and do free
1412     if (removeData->sizeOfResArray == removeData->numOfResults)
1413     {
1414         if(!removeData->hasError)
1415         {
1416             // Remove device info from prvisioning database
1417             if (OC_STACK_OK != PDMDeleteDevice(&removeData->revokeTargetDev->doxm->deviceID))
1418             {
1419                 OIC_LOG(ERROR, TAG, "ResultForRemoveDevice : Failed to remove device in PDM.");
1420                 removeData->hasError = true;
1421             }
1422         }
1423         removeData->resultCallback(removeData->ctx, removeData->numOfResults, removeData->removeRes,
1424                                    removeData->hasError);
1425         DeleteRemoveData_t(removeData);
1426     }
1427  }
1428
1429 /**
1430  * Callback handler of unlink first device.
1431  *
1432  * @param[in] ctx             ctx value passed to callback from calling function.
1433  * @param[in] handle          handle to an invocation
1434  * @param[in] clientResponse  Response from queries to remote servers.
1435  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction
1436  *          and  OC_STACK_KEEP_TRANSACTION to keep it.
1437  */
1438 static OCStackApplicationResult SRPRemoveDeviceCB(void *delDevCtx, OCDoHandle handle,
1439         OCClientResponse *clientResponse)
1440 {
1441     //Update the delete credential into delete device context
1442     //Save the deleted status in delDevCtx
1443     (void)handle;
1444     OIC_LOG_V(INFO, TAG, "Inside SRPRemoveDeviceCB.");
1445     VERIFY_NON_NULL(TAG, delDevCtx, ERROR, OC_STACK_DELETE_TRANSACTION);
1446     OCStackResult res = OC_STACK_ERROR;
1447
1448     RemoveData_t* removeData = (RemoveData_t*)delDevCtx;
1449
1450     if (clientResponse)
1451     {
1452         OicUuid_t revDevUuid = {.id={0}};
1453         if(UUID_LENGTH == clientResponse->identity.id_length)
1454         {
1455             memcpy(revDevUuid.id, clientResponse->identity.id, sizeof(revDevUuid.id));
1456             if (OC_STACK_RESOURCE_DELETED == clientResponse->result)
1457             {
1458                 res = PDMUnlinkDevices(&removeData->revokeTargetDev->doxm->deviceID, &revDevUuid);
1459                 if (OC_STACK_OK != res)
1460                 {
1461                     OIC_LOG(ERROR, TAG, "PDMSetLinkStale() FAIL: PDB is an obsolete one.");
1462                            registerResultForRemoveDevice(removeData, &revDevUuid,
1463                            OC_STACK_INCONSISTENT_DB, true);
1464
1465                     return OC_STACK_DELETE_TRANSACTION;
1466                 }
1467
1468                 registerResultForRemoveDevice(removeData, &revDevUuid,
1469                                               OC_STACK_RESOURCE_DELETED, false);
1470             }
1471             else
1472             {
1473                 registerResultForRemoveDevice(removeData, &revDevUuid,
1474                                               clientResponse->result, true);
1475                 OIC_LOG(ERROR, TAG, "Unexpected result from DELETE credential request!");
1476             }
1477         }
1478         else
1479         {
1480             OIC_LOG_V(WARNING, TAG, "Incorrect length of device UUID was sent from %s:%d",
1481                      clientResponse->devAddr.addr, clientResponse->devAddr.port);
1482
1483             if (OC_STACK_RESOURCE_DELETED == clientResponse->result)
1484             {
1485                 /**
1486                   * Since server's credential was deleted,
1487                   * register result as OC_STACK_INCONSISTENT_DB with NULL UUID.
1488                   */
1489                 OIC_LOG_V(ERROR, TAG, "But server's credential was deleted.");
1490                 registerResultForRemoveDevice(removeData, NULL, OC_STACK_INCONSISTENT_DB, true);
1491             }
1492             else
1493             {
1494                 registerResultForRemoveDevice(removeData, NULL, clientResponse->result, true);
1495             }
1496         }
1497     }
1498     else
1499     {
1500         registerResultForRemoveDevice(removeData, NULL, OC_STACK_ERROR, true);
1501         OIC_LOG(ERROR, TAG, "SRPRemoveDevices received Null clientResponse");
1502     }
1503
1504
1505     return OC_STACK_DELETE_TRANSACTION;
1506 }
1507
1508 static OCStackResult GetListofDevToReqDeleteCred(const OCProvisionDev_t* pRevokeTargetDev,
1509                                                  OCProvisionDev_t* pOwnedDevList,
1510                                                  OCUuidList_t* pLinkedUuidList,
1511                                                  OCProvisionDev_t** ppLinkedDevList,
1512                                                  size_t *numOfLinkedDev)
1513 {
1514     // pOwnedDevList could be NULL. It means no alived and owned device now.
1515     if (pRevokeTargetDev == NULL || pLinkedUuidList == NULL ||\
1516         ppLinkedDevList == NULL || numOfLinkedDev == NULL)
1517     {
1518         return OC_STACK_INVALID_PARAM;
1519     }
1520
1521     size_t cnt = 0;
1522     OCUuidList_t *curUuid = NULL, *tmpUuid = NULL;
1523     LL_FOREACH_SAFE(pLinkedUuidList, curUuid, tmpUuid)
1524     {
1525         // Mark the link status stale.
1526         OCStackResult res = PDMSetLinkStale(&curUuid->dev, &pRevokeTargetDev->doxm->deviceID);
1527         if (OC_STACK_OK != res)
1528         {
1529             OIC_LOG(FATAL, TAG, "PDMSetLinkStale() FAIL: PDB is an obsolete one.");
1530             return OC_STACK_INCONSISTENT_DB;
1531         }
1532
1533         if (pOwnedDevList)
1534         {
1535             // If this linked device is alive (power-on), add the deivce to the list.
1536             OCProvisionDev_t *curDev = NULL, *tmpDev = NULL;
1537             LL_FOREACH_SAFE(pOwnedDevList, curDev, tmpDev)
1538             {
1539                 if (memcmp(curDev->doxm->deviceID.id, curUuid->dev.id, sizeof(curUuid->dev.id)) == 0)
1540                 {
1541                     OCProvisionDev_t* targetDev = PMCloneOCProvisionDev(curDev);
1542                     if (NULL == targetDev)
1543                     {
1544                         OIC_LOG(ERROR, TAG, "SRPRemoveDevice : Cloning OCProvisionDev_t Failed.");
1545                         return OC_STACK_NO_MEMORY;
1546                     }
1547
1548                     LL_PREPEND(*ppLinkedDevList, targetDev);
1549                     cnt++;
1550                     break;
1551                 }
1552             }
1553         }
1554     }
1555     *numOfLinkedDev = cnt;
1556     return OC_STACK_OK;
1557 }
1558
1559 /*
1560 * Function to device revocation
1561 * This function will remove credential of target device from all devices in subnet.
1562 *
1563 * @param[in] ctx Application context would be returned in result callback
1564 * @param[in] waitTimeForOwnedDeviceDiscovery Maximum wait time for owned device discovery.(seconds)
1565 * @param[in] pTargetDev Device information to be revoked.
1566 * @param[in] resultCallback callback provided by API user, callback will be called when
1567 *            credential revocation is finished.
1568 * @return  OC_STACK_OK in case of success and other value otherwise.
1569 *          If OC_STACK_OK is returned, the caller of this API should wait for callback.
1570 *          OC_STACK_CONTINUE means operation is success but no request is need to be initiated.
1571 */
1572 OCStackResult SRPRemoveDevice(void* ctx, unsigned short waitTimeForOwnedDeviceDiscovery,
1573                              const OCProvisionDev_t* pTargetDev, OCProvisionResultCB resultCallback)
1574 {
1575     OIC_LOG(INFO, TAG, "IN SRPRemoveDevice");
1576
1577     if (!pTargetDev  || 0 == waitTimeForOwnedDeviceDiscovery)
1578     {
1579         OIC_LOG(INFO, TAG, "SRPRemoveDevice : NULL parameters");
1580         return OC_STACK_INVALID_PARAM;
1581     }
1582     if (!resultCallback)
1583     {
1584         OIC_LOG(INFO, TAG, "SRPRemoveDevice : NULL Callback");
1585         return OC_STACK_INVALID_CALLBACK;
1586     }
1587
1588     // Declare variables in here to handle error cases with goto statement.
1589     OCProvisionDev_t* pOwnedDevList = NULL;
1590     OCProvisionDev_t* pLinkedDevList = NULL;
1591     RemoveData_t* removeData = NULL;
1592
1593     //1. Find all devices that has a credential of the revoked device
1594     OCUuidList_t* pLinkedUuidList = NULL;
1595     size_t numOfDevices = 0;
1596     OCStackResult res = OC_STACK_ERROR;
1597     res = PDMGetLinkedDevices(&pTargetDev->doxm->deviceID, &pLinkedUuidList, &numOfDevices);
1598     if (OC_STACK_OK != res)
1599     {
1600         OIC_LOG(ERROR, TAG, "SRPRemoveDevice : Failed to get linked devices information");
1601         return res;
1602     }
1603     // if there is no related device, we can skip further process.
1604     if (0 == numOfDevices)
1605     {
1606         OIC_LOG(DEBUG, TAG, "SRPRemoveDevice : No linked device found.");
1607         res = OC_STACK_CONTINUE;
1608         goto error;
1609     }
1610
1611     //2. Find owned device from the network
1612     res = PMDeviceDiscovery(waitTimeForOwnedDeviceDiscovery, true, &pOwnedDevList);
1613     if (OC_STACK_OK != res)
1614     {
1615         OIC_LOG(ERROR, TAG, "SRPRemoveDevice : Failed to PMDeviceDiscovery");
1616         goto error;
1617     }
1618
1619     //3. Make a list of devices to send DELETE credential request
1620     //   by comparing owned devices from provisioning database with mutlicast discovery result.
1621     size_t numOfLinkedDev = 0;
1622     res = GetListofDevToReqDeleteCred(pTargetDev, pOwnedDevList, pLinkedUuidList,
1623                                       &pLinkedDevList, &numOfLinkedDev);
1624     if (OC_STACK_OK != res)
1625     {
1626         OIC_LOG(ERROR, TAG, "SRPRemoveDevice : GetListofDevToReqDeleteCred() failed");
1627         goto error;
1628     }
1629     if (0 == numOfLinkedDev) // This case means, there is linked device but it's not alive now.
1630     {                       // So we don't have to send request message.
1631         OIC_LOG(DEBUG, TAG, "SRPRemoveDevice : No alived & linked device found.");
1632         res = OC_STACK_CONTINUE;
1633         goto error;
1634     }
1635
1636     // 4. Prepare RemoveData Context data.
1637     removeData = (RemoveData_t*)OICCalloc(1, sizeof(RemoveData_t));
1638     if (!removeData)
1639     {
1640         OIC_LOG(ERROR, TAG, "SRPRemoveDevices : Failed to memory allocation");
1641         res = OC_STACK_NO_MEMORY;
1642         goto error;
1643     }
1644
1645     removeData->revokeTargetDev = PMCloneOCProvisionDev(pTargetDev);
1646     if (!removeData->revokeTargetDev)
1647     {
1648         OIC_LOG(ERROR, TAG, "SRPRemoveDevices : PMCloneOCProvisionDev Failed");
1649         res = OC_STACK_NO_MEMORY;
1650         goto error;
1651     }
1652
1653     removeData->removeRes =
1654         (OCProvisionResult_t*)OICCalloc(numOfLinkedDev, sizeof(OCProvisionResult_t));
1655     if (!removeData->removeRes)
1656     {
1657         OIC_LOG(ERROR, TAG, "SRPRemoveDevices : Failed to memory allocation");
1658         res = OC_STACK_NO_MEMORY;
1659         goto error;
1660     }
1661
1662     removeData->ctx = ctx;
1663     removeData->linkedDevList = pLinkedDevList;
1664     removeData->resultCallback = resultCallback;
1665     removeData->numOfResults = 0;
1666     removeData->sizeOfResArray = numOfLinkedDev;
1667     removeData->hasError = false;
1668
1669     // 5. Send DELETE credential request to linked devices.
1670     OCProvisionDev_t *curDev = NULL, *tmpDev = NULL;
1671     OCStackResult totalRes = OC_STACK_ERROR;  /* variable for checking request is sent or not */
1672     LL_FOREACH_SAFE(pLinkedDevList, curDev, tmpDev)
1673     {
1674         res = SendDeleteCredentialRequest((void*)removeData, &SRPRemoveDeviceCB,
1675                                            removeData->revokeTargetDev, curDev);
1676         if (OC_STACK_OK != res)
1677         {
1678             OIC_LOG_V(ERROR, TAG, "SRPRemoveDevice : Fail to send the DELETE credential request to\
1679                      %s:%u", curDev->endpoint.addr, curDev->endpoint.port);
1680         }
1681         else
1682         {
1683             totalRes = OC_STACK_OK; // This means at least one request is successfully sent.
1684         }
1685     }
1686
1687     PDMDestoryOicUuidLinkList(pLinkedUuidList); //TODO: Modify API name to have unified convention.
1688     PMDeleteDeviceList(pOwnedDevList);
1689     OIC_LOG(INFO, TAG, "OUT SRPRemoveDevice");
1690
1691     return totalRes; // Caller of this API should wait callback if totalRes == OC_STACK_OK.
1692
1693 error:
1694     PDMDestoryOicUuidLinkList(pLinkedUuidList);
1695     PMDeleteDeviceList(pOwnedDevList);
1696     PMDeleteDeviceList(pLinkedDevList);
1697     if (removeData)
1698     {
1699         OICFree(removeData->revokeTargetDev);
1700         OICFree(removeData->removeRes);
1701         OICFree(removeData);
1702     }
1703     OIC_LOG(INFO, TAG, "OUT ERROR case SRPRemoveDevice");
1704     return res;
1705 }