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     VERIFY_NON_NULL(TAG, pDev1, ERROR,  OC_STACK_INVALID_PARAM);
 633     if (SYMMETRIC_PAIR_WISE_KEY == type)
 634     {
 635         VERIFY_NON_NULL(TAG, pDev2, ERROR,  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 (SYMMETRIC_PAIR_WISE_KEY == type &&
 643         0 == memcmp(&pDev1->doxm->deviceID, &pDev2->doxm->deviceID, sizeof(OicUuid_t)))
 644     {
 645         OIC_LOG(INFO, TAG, "SRPUnlinkDevices : Same device ID");
 646         return OC_STACK_INVALID_PARAM;
 647     }
 648
 649     if (SYMMETRIC_PAIR_WISE_KEY == type &&
 650        !(OWNER_PSK_LENGTH_128 == keySize || OWNER_PSK_LENGTH_256 == keySize))
 651     {
 652         OIC_LOG(INFO, TAG, "Invalid key size");
 653         return OC_STACK_INVALID_PARAM;
 654     }
 655
 656     OIC_LOG(INFO, TAG, "In SRPProvisionCredentials");
 657
 658     if (SYMMETRIC_PAIR_WISE_KEY == type)
 659     {
 660         bool linkExisits = true;
 661         OCStackResult res = PDMIsLinkExists(&pDev1->doxm->deviceID, &pDev2->doxm->deviceID, &linkExisits);
 662
 663         if (res != OC_STACK_OK)
 664         {
 665             OIC_LOG(ERROR, TAG, "Internal error occured");
 666             return res;
 667         }
 668         if (linkExisits)
 669         {
 670             OIC_LOG(ERROR, TAG, "Link already exists");
 671             return OC_STACK_INVALID_PARAM;
 672         }
 673     }
 674
 675     OicUuid_t provTooldeviceID =   {{0,}};
 676     if (OC_STACK_OK != GetDoxmDeviceID(&provTooldeviceID))
 677     {
 678         OIC_LOG(ERROR, TAG, "Error while retrieving provisioning tool's device ID");
 679         return OC_STACK_ERROR;
 680     }
 681     OIC_LOG(INFO, TAG, "retrieved deviceid");
 682     switch (type)
 683     {
 684         case SYMMETRIC_PAIR_WISE_KEY:
 685         {
 686             const OCProvisionDev_t *firstDevice = pDev1;
 687             const OCProvisionDev_t *secondDevice = pDev2;
 688
 689             OicSecCred_t *firstCred = NULL;
 690             OicSecCred_t *secondCred = NULL;
 691             OCStackResult res = PMGeneratePairWiseCredentials(type, keySize, &provTooldeviceID,
 692                     &firstDevice->doxm->deviceID, &secondDevice->doxm->deviceID,
 693                     &firstCred, &secondCred);
 694             VERIFY_SUCCESS(TAG, (res==OC_STACK_OK), ERROR, OC_STACK_ERROR);
 695             OIC_LOG(INFO, TAG, "Credentials generated successfully");
 696             CredentialData_t *credData =
 697                 (CredentialData_t *) OICCalloc(1, sizeof(CredentialData_t));
 698             if (NULL == credData)
 699             {
 700                 OICFree(firstCred);
 701                 OICFree(secondCred);
 702                 OIC_LOG(ERROR, TAG, "Memory allocation problem");
 703                 return OC_STACK_NO_MEMORY;
 704             }
 705             credData->deviceInfo1 = firstDevice;
 706             credData->deviceInfo2 = secondDevice;
 707             credData->credInfo = secondCred;
 708             credData->ctx = ctx;
 709             credData->credInfoFirst = firstCred;
 710             credData->numOfResults = 0;
 711             credData->resultCallback = resultCallback;
 712             // first call to provision creds to device1.
 713             // second call to provision creds to device2.
 714             int noOfRiCalls = 2;
 715             credData->resArr =
 716                 (OCProvisionResult_t*)OICCalloc(noOfRiCalls, sizeof(OCProvisionResult_t));
 717             if (NULL == credData->resArr)
 718             {
 719                 OICFree(firstCred);
 720                 OICFree(secondCred);
 721                 OICFree(credData);
 722                 OIC_LOG(ERROR, TAG, "Memory allocation problem");
 723                 return OC_STACK_NO_MEMORY;
 724             }
 725             res = provisionCredentials(firstCred, firstDevice, credData, &provisionCredentialCB1);
 726             if (OC_STACK_OK != res)
 727             {
 728                 DeleteCredList(firstCred);
 729                 DeleteCredList(secondCred);
 730                 OICFree(credData->resArr);
 731                 OICFree(credData);
 732             }
 733             OIC_LOG_V(INFO, TAG, "provisionCredentials returned: %d",res);
 734             VERIFY_SUCCESS(TAG, (res==OC_STACK_OK), ERROR, OC_STACK_ERROR);
 735             return res;
 736         }
 737 #ifdef __WITH_X509__
 738         case SIGNED_ASYMMETRIC_KEY:
 739         {
 740             const OCProvisionDev_t *firstDevice = pDev1;
 741             OicSecCred_t *cred = NULL;
 742             OCStackResult res = PMGenerateCertificateCredentials(&provTooldeviceID,
 743                                                                 &firstDevice->doxm->deviceID,&cred);
 744             VERIFY_SUCCESS(TAG, (res==OC_STACK_OK), ERROR, OC_STACK_ERROR);
 745             OIC_LOG(INFO, TAG, "Certificate credentials generated successfully");
 746             CertData_t *certData = (CertData_t *) OICCalloc(1, sizeof(CertData_t));
 747             if (NULL == certData)
 748             {
 749                 OICFree(cred);
 750                 OIC_LOG(ERROR, TAG, "Memory allocation problem");
 751                 return OC_STACK_NO_MEMORY;
 752             }
 753
 754             certData->deviceInfo = firstDevice;
 755             certData->ctx = ctx;
 756             certData->credInfo = cred;
 757             certData->numOfResults = 0;
 758             certData->resultCallback = resultCallback;
 759
 760             certData->resArr = (OCProvisionResult_t*)OICCalloc(1, sizeof(OCProvisionResult_t));
 761             if (NULL == certData->resArr)
 762             {
 763                 DeleteCredList(cred);
 764                 OICFree(certData);
 765                 OIC_LOG(ERROR, TAG, "Memory allocation problem");
 766                 return OC_STACK_NO_MEMORY;
 767             }
 768
 769             res = provisionCertCred(cred, firstDevice, certData, &provisionCertCB);
 770             if (OC_STACK_OK != res)
 771             {
 772                 OICFree(certData->resArr);
 773                 OICFree(certData);
 774             }
 775             DeleteCredList(cred);
 776             OIC_LOG_V(INFO, TAG, "provisionCertCredentials returned: %d",res);
 777
 778             return res;
 779         }
 780 #endif
 781         default:
 782         {
 783             OIC_LOG(ERROR, TAG, "Invalid option.");
 784             return OC_STACK_INVALID_PARAM;
 785         }
 786     }
 787     return OC_STACK_ERROR;
 788 }
 789
 790 /**
 791  * Internal Function to store results in result array during ACL provisioning.
 792  */
 793 static void registerResultForACLProvisioning(ACLData_t *aclData,
 794                                              OCStackResult stackresult)
 795 {
 796    OIC_LOG_V(INFO, TAG, "Inside registerResultForACLProvisioning aclData->numOfResults is %d\n",
 797                        aclData->numOfResults);
 798    memcpy(aclData->resArr[(aclData->numOfResults)].deviceId.id,
 799           aclData->deviceInfo->doxm->deviceID.id, UUID_LENGTH);
 800    aclData->resArr[(aclData->numOfResults)].res = stackresult;
 801    ++(aclData->numOfResults);
 802 }
 803
 804 /**
 805  * Callback handler of SRPProvisionACL.
 806  *
 807  * @param[in] ctx             ctx value passed to callback from calling function.
 808  * @param[in] UNUSED          handle to an invocation
 809  * @param[in] clientResponse  Response from queries to remote servers.
 810  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction
 811  *          and  OC_STACK_KEEP_TRANSACTION to keep it.
 812  */
 813 static OCStackApplicationResult SRPProvisionACLCB(void *ctx, OCDoHandle UNUSED,
 814                                                   OCClientResponse *clientResponse)
 815 {
 816     OIC_LOG_V(INFO, TAG, "Inside SRPProvisionACLCB.");
 817     (void)UNUSED;
 818     VERIFY_NON_NULL(TAG, ctx, ERROR, OC_STACK_DELETE_TRANSACTION);
 819     ACLData_t *aclData = (ACLData_t*)ctx;
 820     OCProvisionResultCB resultCallback = aclData->resultCallback;
 821
 822     if (clientResponse)
 823     {
 824         if(OC_STACK_RESOURCE_CREATED == clientResponse->result)
 825         {
 826             registerResultForACLProvisioning(aclData, OC_STACK_RESOURCE_CREATED);
 827             ((OCProvisionResultCB)(resultCallback))(aclData->ctx, aclData->numOfResults,
 828                                                     aclData->resArr,
 829                                                     false);
 830              OICFree(aclData->resArr);
 831              OICFree(aclData);
 832              return OC_STACK_DELETE_TRANSACTION;
 833         }
 834     }
 835     registerResultForACLProvisioning(aclData, OC_STACK_ERROR);
 836     ((OCProvisionResultCB)(resultCallback))(aclData->ctx, aclData->numOfResults,
 837                                             aclData->resArr,
 838                                             true);
 839     OIC_LOG_V(ERROR, TAG, "SRPProvisionACLCB received Null clientResponse");
 840     OICFree(aclData->resArr);
 841     OICFree(aclData);
 842     return OC_STACK_DELETE_TRANSACTION;
 843 }
 844
 845 OCStackResult SRPProvisionACL(void *ctx, const OCProvisionDev_t *selectedDeviceInfo,
 846         OicSecAcl_t *acl, OCProvisionResultCB resultCallback)
 847 {
 848     VERIFY_NON_NULL(TAG, selectedDeviceInfo, ERROR,  OC_STACK_INVALID_PARAM);
 849     VERIFY_NON_NULL(TAG, acl, ERROR,  OC_STACK_INVALID_PARAM);
 850     VERIFY_NON_NULL(TAG, resultCallback, ERROR,  OC_STACK_INVALID_CALLBACK);
 851
 852     OCSecurityPayload* secPayload = (OCSecurityPayload*)OICCalloc(1, sizeof(OCSecurityPayload));
 853     if(!secPayload)
 854     {
 855         OIC_LOG(ERROR, TAG, "Failed to memory allocation");
 856         return OC_STACK_NO_MEMORY;
 857     }
 858     secPayload->base.type = PAYLOAD_TYPE_SECURITY;
 859     if(OC_STACK_OK != AclToCBORPayload(acl, &secPayload->securityData1, &secPayload->payloadSize))
 860     {
 861         OCPayloadDestroy((OCPayload *)secPayload);
 862         OIC_LOG(ERROR, TAG, "Failed to AclToCBORPayload");
 863         return OC_STACK_NO_MEMORY;
 864     }
 865     char query[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};
 866     if(!PMGenerateQuery(true,
 867                         selectedDeviceInfo->endpoint.addr,
 868                         selectedDeviceInfo->securePort,
 869                         selectedDeviceInfo->connType,
 870                         query, sizeof(query), OIC_RSRC_ACL_URI))
 871     {
 872         OIC_LOG(ERROR, TAG, "DeviceDiscoveryHandler : Failed to generate query");
 873         return OC_STACK_ERROR;
 874     }
 875     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
 876
 877     OCCallbackData cbData =  {.context=NULL, .cb=NULL, .cd=NULL};
 878     cbData.cb = &SRPProvisionACLCB;
 879     ACLData_t *aclData = (ACLData_t *) OICCalloc(1, sizeof(ACLData_t));
 880     if (aclData == NULL)
 881     {
 882         OCPayloadDestroy((OCPayload *)secPayload);
 883         OIC_LOG(ERROR, TAG, "Unable to allocate memory");
 884         return OC_STACK_NO_MEMORY;
 885     }
 886     aclData->deviceInfo = selectedDeviceInfo;
 887     aclData->resultCallback = resultCallback;
 888     aclData->numOfResults=0;
 889     aclData->ctx = ctx;
 890     // call to provision ACL to device1.
 891     int noOfRiCalls = 1;
 892     aclData->resArr = (OCProvisionResult_t*)OICCalloc(noOfRiCalls, sizeof(OCProvisionResult_t));
 893     if (aclData->resArr == NULL)
 894     {
 895         OICFree(aclData);
 896         OCPayloadDestroy((OCPayload *)secPayload);
 897         OIC_LOG(ERROR, TAG, "Unable to allocate memory");
 898         return OC_STACK_NO_MEMORY;
 899     }
 900     cbData.context = (void *)aclData;
 901     cbData.cd = NULL;
 902     OCMethod method = OC_REST_POST;
 903     OCDoHandle handle = NULL;
 904     OIC_LOG(DEBUG, TAG, "Sending ACL info to resource server");
 905     OCStackResult ret = OCDoResource(&handle, method, query,
 906             &selectedDeviceInfo->endpoint, (OCPayload*)secPayload,
 907             selectedDeviceInfo->connType, OC_HIGH_QOS, &cbData, NULL, 0);
 908     if (ret != OC_STACK_OK)
 909     {
 910         OICFree(aclData->resArr);
 911         OICFree(aclData);
 912     }
 913     VERIFY_SUCCESS(TAG, (OC_STACK_OK == ret), ERROR, OC_STACK_ERROR);
 914     return OC_STACK_OK;
 915 }
 916
 917 /**
 918  * Internal Function to store results in result array during Direct-Pairing provisioning.
 919  */
 920 static void registerResultForDirectPairingProvisioning(PconfData_t *pconfData,
 921                                              OCStackResult stackresult)
 922 {
 923    OIC_LOG_V(INFO, TAG, "Inside registerResultForDirectPairingProvisioning "
 924            "pconfData->numOfResults is %d\n", pconfData->numOfResults);
 925    memcpy(pconfData->resArr[(pconfData->numOfResults)].deviceId.id,
 926           pconfData->deviceInfo->doxm->deviceID.id, UUID_LENGTH);
 927    pconfData->resArr[(pconfData->numOfResults)].res = stackresult;
 928    ++(pconfData->numOfResults);
 929 }
 930
 931 /**
 932  * Callback handler of SRPProvisionDirectPairing.
 933  *
 934  * @param[in] ctx             ctx value passed to callback from calling function.
 935  * @param[in] UNUSED          handle to an invocation
 936  * @param[in] clientResponse  Response from queries to remote servers.
 937  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction
 938  *          and  OC_STACK_KEEP_TRANSACTION to keep it.
 939  */
 940 static OCStackApplicationResult SRPProvisionDirectPairingCB(void *ctx, OCDoHandle UNUSED,
 941                                                   OCClientResponse *clientResponse)
 942 {
 943     OIC_LOG_V(INFO, TAG, "Inside SRPProvisionDirectPairingCB.");
 944     (void)UNUSED;
 945     VERIFY_NON_NULL(TAG, ctx, ERROR, OC_STACK_DELETE_TRANSACTION);
 946     PconfData_t *pconfData = (PconfData_t*)ctx;
 947     OCProvisionResultCB resultCallback = pconfData->resultCallback;
 948
 949     if (clientResponse)
 950     {
 951         if(OC_STACK_RESOURCE_CREATED == clientResponse->result)
 952         {
 953             registerResultForDirectPairingProvisioning(pconfData, OC_STACK_OK);
 954             ((OCProvisionResultCB)(resultCallback))(pconfData->ctx, pconfData->numOfResults,
 955                                                     pconfData->resArr,
 956                                                     false);
 957              OICFree(pconfData->resArr);
 958              OICFree(pconfData);
 959              return OC_STACK_DELETE_TRANSACTION;
 960         }
 961     }
 962     registerResultForDirectPairingProvisioning(pconfData, OC_STACK_ERROR);
 963     ((OCProvisionResultCB)(resultCallback))(pconfData->ctx, pconfData->numOfResults,
 964                                             pconfData->resArr,
 965                                             true);
 966     OIC_LOG_V(ERROR, TAG, "SRPProvisionDirectPairingCB received Null clientResponse");
 967     OICFree(pconfData->resArr);
 968     OICFree(pconfData);
 969     return OC_STACK_DELETE_TRANSACTION;
 970 }
 971
 972 OCStackResult SRPProvisionDirectPairing(void *ctx, const OCProvisionDev_t *selectedDeviceInfo,
 973         OicSecPconf_t *pconf, OCProvisionResultCB resultCallback)
 974 {
 975     VERIFY_NON_NULL(TAG, selectedDeviceInfo, ERROR,  OC_STACK_INVALID_PARAM);
 976     VERIFY_NON_NULL(TAG, pconf, ERROR,  OC_STACK_INVALID_PARAM);
 977     VERIFY_NON_NULL(TAG, resultCallback, ERROR,  OC_STACK_INVALID_CALLBACK);
 978
 979     // check direct-pairing capability
 980     if (true != selectedDeviceInfo->doxm->dpc)
 981     {
 982         OIC_LOG(ERROR, TAG, "Resouce server does not have Direct-Pairing Capability ");
 983         return OC_STACK_UNAUTHORIZED_REQ;
 984     }
 985
 986     OicUuid_t provTooldeviceID =   {.id={0}};
 987     if (OC_STACK_OK != GetDoxmDeviceID(&provTooldeviceID))
 988     {
 989         OIC_LOG(ERROR, TAG, "Error while retrieving provisioning tool's device ID");
 990         return OC_STACK_ERROR;
 991     }
 992     memcpy(&pconf->rownerID, &provTooldeviceID, sizeof(OicUuid_t));
 993
 994     OCSecurityPayload* secPayload = (OCSecurityPayload*)OICCalloc(1, sizeof(OCSecurityPayload));
 995     if(!secPayload)
 996     {
 997         OIC_LOG(ERROR, TAG, "Failed to memory allocation");
 998         return OC_STACK_NO_MEMORY;
 999     }
1000     secPayload->base.type = PAYLOAD_TYPE_SECURITY;
1001
1002     if (OC_STACK_OK != PconfToCBORPayload(pconf, &(secPayload->securityData1),
1003                 &(secPayload->payloadSize)))
1004     {
1005         OCPayloadDestroy((OCPayload*)secPayload);
1006         OIC_LOG(ERROR, TAG, "Failed to PconfToCborPayload");
1007         return OC_STACK_NO_MEMORY;
1008     }
1009     OIC_LOG_V(INFO, TAG, "PCONF : %s", secPayload->securityData1);
1010
1011     char query[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};
1012     if(!PMGenerateQuery(true,
1013                 selectedDeviceInfo->endpoint.addr,
1014                 selectedDeviceInfo->securePort,
1015                 selectedDeviceInfo->connType,
1016                 query, sizeof(query), OIC_RSRC_PCONF_URI))
1017     {
1018         OIC_LOG(ERROR, TAG, "SRPProvisionDirectPairing : Failed to generate query");
1019         return OC_STACK_ERROR;
1020     }
1021     OIC_LOG_V(DEBUG, TAG, "Query=%s", query);
1022
1023     OCCallbackData cbData =  {.context=NULL, .cb=NULL, .cd=NULL};
1024     cbData.cb = &SRPProvisionDirectPairingCB;
1025     PconfData_t *pconfData = (PconfData_t *) OICCalloc(1, sizeof(PconfData_t));
1026     if (NULL == pconfData)
1027     {
1028         OCPayloadDestroy((OCPayload*)secPayload);
1029         OIC_LOG(ERROR, TAG, "Unable to allocate memory");
1030         return OC_STACK_NO_MEMORY;
1031     }
1032     pconfData->deviceInfo = selectedDeviceInfo;
1033     pconfData->resultCallback = resultCallback;
1034     pconfData->numOfResults=0;
1035     pconfData->ctx = ctx;
1036     // call to provision PCONF to device1.
1037     int noOfRiCalls = 1;
1038     pconfData->resArr = (OCProvisionResult_t*)OICCalloc(noOfRiCalls, sizeof(OCProvisionResult_t));
1039     if (NULL == pconfData->resArr)
1040     {
1041         OICFree(pconfData);
1042         OCPayloadDestroy((OCPayload*)secPayload);
1043         OIC_LOG(ERROR, TAG, "Unable to allocate memory");
1044         return OC_STACK_NO_MEMORY;
1045     }
1046     cbData.context = (void *)pconfData;
1047     cbData.cd = NULL;
1048     OCMethod method = OC_REST_POST;
1049     OCDoHandle handle = NULL;
1050     OIC_LOG(DEBUG, TAG, "Sending PCONF info to resource server");
1051     OCStackResult ret = OCDoResource(&handle, method, query,
1052             &selectedDeviceInfo->endpoint, (OCPayload*)secPayload,
1053             selectedDeviceInfo->connType, OC_LOW_QOS, &cbData, NULL, 0);
1054     if (OC_STACK_OK != ret)
1055     {
1056         OICFree(pconfData->resArr);
1057         OICFree(pconfData);
1058     }
1059     VERIFY_SUCCESS(TAG, (OC_STACK_OK == ret), ERROR, OC_STACK_ERROR);
1060     return OC_STACK_OK;
1061 }
1062
1063 static void DeleteUnlinkData_t(UnlinkData_t *unlinkData)
1064 {
1065     if (unlinkData)
1066     {
1067         OICFree(unlinkData->unlinkDev);
1068         OICFree(unlinkData->unlinkRes);
1069         OICFree(unlinkData);
1070     }
1071 }
1072
1073 static void registerResultForUnlinkDevices(UnlinkData_t *unlinkData, OCStackResult stackresult,
1074                                            IdxUnlinkRes_t idx)
1075 {
1076     if (NULL != unlinkData)
1077     {
1078         OIC_LOG_V(INFO, TAG, "Inside registerResultForUnlinkDevices unlinkData->numOfResults is %d\n",
1079                             unlinkData->numOfResults);
1080         OIC_LOG_V(INFO, TAG, "Stack result :: %d", stackresult);
1081
1082         OicUuid_t *pUuid = &unlinkData->unlinkRes[(unlinkData->numOfResults)].deviceId;
1083
1084         // Set result in the result array according to the position (devNum).
1085         if (idx != IDX_DB_UPDATE_RES)
1086         {
1087             memcpy(pUuid->id, unlinkData->unlinkDev[idx].doxm->deviceID.id, sizeof(pUuid->id));
1088         }
1089         else
1090         {   // When deivce ID is 000... this means it's the result of database update.
1091             memset(pUuid->id, 0, sizeof(pUuid->id));
1092         }
1093         unlinkData->unlinkRes[(unlinkData->numOfResults)].res = stackresult;
1094         ++(unlinkData->numOfResults);
1095         OIC_LOG (INFO, TAG, "Out registerResultForUnlinkDevices");
1096     }
1097 }
1098
1099 static OCStackResult SendDeleteCredentialRequest(void* ctx,
1100                                                  OCClientResponseHandler respHandler,
1101                                                  const OCProvisionDev_t* revokedDev,
1102                                                  const OCProvisionDev_t* destDev)
1103 {
1104     OIC_LOG(DEBUG, TAG, "IN SendDeleteCredentialRequest");
1105
1106     if (NULL == ctx || NULL == respHandler || NULL == revokedDev || NULL == destDev)
1107     {
1108         return OC_STACK_INVALID_PARAM;
1109     }
1110
1111     char *subID = NULL;
1112     OCStackResult ret = ConvertUuidToStr(&revokedDev->doxm->deviceID, &subID);
1113     if(OC_STACK_OK != ret)
1114     {
1115         OIC_LOG(ERROR, TAG, "SendDeleteCredentialRequest : Failed to canonical UUID encoding");
1116         return OC_STACK_ERROR;
1117     }
1118
1119     char reqBuf[MAX_URI_LENGTH + MAX_QUERY_LENGTH] = {0};
1120     int snRet = 0;
1121                     //coaps://0.0.0.0:5684/oic/sec/cred?subjectid=(Canonical ENCODED UUID)
1122     snRet = snprintf(reqBuf, sizeof(reqBuf), SRP_FORM_DELETE_CREDENTIAL, destDev->endpoint.addr,
1123                      destDev->securePort, OIC_RSRC_CRED_URI, OIC_JSON_SUBJECTID_NAME, subID);
1124     OICFree(subID);
1125     if (snRet < 0)
1126     {
1127         OIC_LOG_V(ERROR, TAG, "SendDeleteCredentialRequest : Error (snprintf) %d\n", snRet);
1128         return OC_STACK_ERROR;
1129     }
1130     else if ((size_t)snRet >= sizeof(reqBuf))
1131     {
1132         OIC_LOG_V(ERROR, TAG, "SendDeleteCredentialRequest : Truncated (snprintf) %d\n", snRet);
1133         return OC_STACK_ERROR;
1134     }
1135
1136     OCCallbackData cbData;
1137     memset(&cbData, 0, sizeof(cbData));
1138     cbData.context = ctx;
1139     cbData.cb = respHandler;
1140     cbData.cd = NULL;
1141     OIC_LOG_V(INFO, TAG, "URI: %s",reqBuf);
1142
1143     OIC_LOG(DEBUG, TAG, "Sending remove credential request to resource server");
1144
1145     ret = OCDoResource(NULL, OC_REST_DELETE, reqBuf,
1146                                      &destDev->endpoint, NULL,
1147                                      CT_ADAPTER_IP, OC_HIGH_QOS, &cbData, NULL, 0);
1148     if (OC_STACK_OK != ret)
1149     {
1150         OIC_LOG_V(ERROR, TAG, "SendDeleteCredentialRequest : Error in OCDoResource %d", ret);
1151     }
1152     OIC_LOG(DEBUG, TAG, "OUT SendDeleteCredentialRequest");
1153
1154     return ret;
1155 }
1156
1157 /**
1158  * Callback handler of unlink second device.
1159  *
1160  * @param[in] ctx             ctx value passed to callback from calling function.
1161  * @param[in] handle          handle to an invocation
1162  * @param[in] clientResponse  Response from queries to remote servers.
1163  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction and
1164  *          OC_STACK_KEEP_TRANSACTION to keep it.
1165  */
1166 static OCStackApplicationResult SRPUnlinkDevice2CB(void *unlinkCtx, OCDoHandle handle,
1167         OCClientResponse *clientResponse)
1168 {
1169     (void) handle;
1170     OIC_LOG(DEBUG, TAG, "IN SRPUnlinkDevice2CB");
1171     VERIFY_NON_NULL(TAG, unlinkCtx, ERROR, OC_STACK_DELETE_TRANSACTION);
1172     UnlinkData_t* unlinkData = (UnlinkData_t*)unlinkCtx;
1173
1174     if (clientResponse)
1175     {
1176         OIC_LOG(DEBUG, TAG, "Valid client response for device 2");
1177         registerResultForUnlinkDevices(unlinkData, clientResponse->result, IDX_SECOND_DEVICE_RES);
1178
1179         if (OC_STACK_RESOURCE_DELETED == clientResponse->result)
1180         {
1181             OIC_LOG(DEBUG, TAG, "Credential of device2 revoked");
1182         }
1183         else
1184         {
1185             OIC_LOG(ERROR, TAG, "Unable to delete credential information from device 2");
1186             unlinkData->resultCallback(unlinkData->ctx,
1187                                        unlinkData->numOfResults, unlinkData->unlinkRes, true);
1188             goto error;
1189         }
1190     }
1191     else
1192     {
1193         registerResultForUnlinkDevices(unlinkData, OC_STACK_INVALID_REQUEST_HANDLE,
1194                                        IDX_SECOND_DEVICE_RES);
1195         unlinkData->resultCallback(unlinkData->ctx,
1196                                    unlinkData->numOfResults, unlinkData->unlinkRes, true);
1197         OIC_LOG(ERROR, TAG, "SRPUnlinkDevice2CB received Null clientResponse");
1198         goto error;
1199     }
1200
1201     //Update provisioning DB when succes case.
1202     if (OC_STACK_OK != PDMUnlinkDevices(&unlinkData->unlinkDev[0].doxm->deviceID,
1203                                        &unlinkData->unlinkDev[1].doxm->deviceID))
1204     {
1205         OIC_LOG(FATAL, TAG, "All requests are successfully done but update provisioning DB FAILED.");
1206         registerResultForUnlinkDevices(unlinkData, OC_STACK_INCONSISTENT_DB, IDX_DB_UPDATE_RES);
1207         unlinkData->resultCallback(unlinkData->ctx,
1208                                    unlinkData->numOfResults, unlinkData->unlinkRes, true);
1209         goto error;
1210     }
1211     unlinkData->resultCallback(unlinkData->ctx, unlinkData->numOfResults, unlinkData->unlinkRes,
1212                                false);
1213
1214 error:
1215     DeleteUnlinkData_t(unlinkData);
1216     OIC_LOG(DEBUG, TAG, "OUT SRPUnlinkDevice2CB");
1217     return OC_STACK_DELETE_TRANSACTION;
1218
1219 }
1220
1221 /**
1222  * Callback handler of unlink first device.
1223  *
1224  * @param[in] ctx             ctx value passed to callback from calling function.
1225  * @param[in] handle          handle to an invocation
1226  * @param[in] clientResponse  Response from queries to remote servers.
1227  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction and
1228  *          OC_STACK_KEEP_TRANSACTION to keep it.
1229  */
1230 static OCStackApplicationResult SRPUnlinkDevice1CB(void *unlinkCtx, OCDoHandle handle,
1231         OCClientResponse *clientResponse)
1232 {
1233     OIC_LOG_V(INFO, TAG, "Inside SRPUnlinkDevice1CB ");
1234     VERIFY_NON_NULL(TAG, unlinkCtx, ERROR, OC_STACK_DELETE_TRANSACTION);
1235     UnlinkData_t* unlinkData = (UnlinkData_t*)unlinkCtx;
1236     (void) handle;
1237
1238     if (clientResponse)
1239     {
1240         OIC_LOG(DEBUG, TAG, "Valid client response for device 1");
1241         registerResultForUnlinkDevices(unlinkData, clientResponse->result, IDX_FIRST_DEVICE_RES);
1242
1243         if (OC_STACK_RESOURCE_DELETED == clientResponse->result)
1244         {
1245             OIC_LOG(DEBUG, TAG, "Credential of device 1 is revoked");
1246
1247             // Second revocation request to second device.
1248             OCStackResult res = SendDeleteCredentialRequest((void*)unlinkData, &SRPUnlinkDevice2CB,
1249                                                     &unlinkData->unlinkDev[0],
1250                                                     &unlinkData->unlinkDev[1] /*Dest*/);
1251             OIC_LOG_V(DEBUG, TAG, "Credential revocation request device 2, result :: %d",res);
1252             if (OC_STACK_OK != res)
1253             {
1254                  OIC_LOG(ERROR, TAG, "Error while sending revocation request for device 2");
1255                  registerResultForUnlinkDevices(unlinkData, OC_STACK_INVALID_REQUEST_HANDLE,
1256                                                 IDX_SECOND_DEVICE_RES);
1257                  unlinkData->resultCallback(unlinkData->ctx,
1258                                             unlinkData->numOfResults, unlinkData->unlinkRes, true);
1259                  goto error;
1260             }
1261             else
1262             {
1263                 OIC_LOG(DEBUG, TAG, "Request for credential revocation successfully sent");
1264                 return OC_STACK_DELETE_TRANSACTION;
1265             }
1266         }
1267         else
1268         {
1269             OIC_LOG(ERROR, TAG, "Unable to delete credential information from device 1");
1270
1271             unlinkData->resultCallback(unlinkData->ctx, unlinkData->numOfResults,
1272                                             unlinkData->unlinkRes, true);
1273             goto error;
1274         }
1275     }
1276     else
1277     {
1278         OIC_LOG(DEBUG, TAG, "Invalid response from server");
1279         registerResultForUnlinkDevices(unlinkData, OC_STACK_INVALID_REQUEST_HANDLE,
1280                                        IDX_FIRST_DEVICE_RES );
1281         unlinkData->resultCallback(unlinkData->ctx,
1282                                    unlinkData->numOfResults, unlinkData->unlinkRes,
1283                                    true);
1284         OIC_LOG(ERROR, TAG, "SRPUnlinkDevice1CB received Null clientResponse");
1285     }
1286
1287 error:
1288     OIC_LOG_V(INFO, TAG, "Out SRPUnlinkDevice1CB");
1289     DeleteUnlinkData_t(unlinkData);
1290     return OC_STACK_DELETE_TRANSACTION;
1291 }
1292
1293 /*
1294 * Function to unlink devices.
1295 * This function will remove the credential & relationship between the two devices.
1296 *
1297 * @param[in] ctx Application context would be returned in result callback
1298 * @param[in] pTargetDev1 first device information to be unlinked.
1299 * @param[in] pTargetDev2 second device information to be unlinked.
1300 * @param[in] resultCallback callback provided by API user, callback will be called when
1301 *            device unlink is finished.
1302  * @return  OC_STACK_OK in case of success and other value otherwise.
1303 */
1304 OCStackResult SRPUnlinkDevices(void* ctx,
1305                                const OCProvisionDev_t* pTargetDev1,
1306                                const OCProvisionDev_t* pTargetDev2,
1307                                OCProvisionResultCB resultCallback)
1308 {
1309     OIC_LOG(INFO, TAG, "IN SRPUnlinkDevices");
1310
1311     if (!pTargetDev1 || !pTargetDev2 || !pTargetDev1->doxm || !pTargetDev2->doxm)
1312     {
1313         OIC_LOG(INFO, TAG, "SRPUnlinkDevices : NULL parameters");
1314         return OC_STACK_INVALID_PARAM;
1315     }
1316     if (!resultCallback)
1317     {
1318         OIC_LOG(INFO, TAG, "SRPUnlinkDevices : NULL Callback");
1319         return OC_STACK_INVALID_CALLBACK;
1320     }
1321     if (0 == memcmp(&pTargetDev1->doxm->deviceID, &pTargetDev2->doxm->deviceID, sizeof(OicUuid_t)))
1322     {
1323         OIC_LOG(INFO, TAG, "SRPUnlinkDevices : Same device ID");
1324         return OC_STACK_INVALID_PARAM;
1325     }
1326
1327     OIC_LOG(INFO, TAG, "Unlinking following devices: ");
1328     PMPrintOCProvisionDev(pTargetDev1);
1329     PMPrintOCProvisionDev(pTargetDev2);
1330
1331     // Mark the link status stale
1332     OCStackResult res = PDMSetLinkStale(&pTargetDev1->doxm->deviceID, &pTargetDev2->doxm->deviceID);
1333     if (OC_STACK_OK != res)
1334     {
1335         OIC_LOG(FATAL, TAG, "unable to update DB. Try again.");
1336         return res;
1337     }
1338
1339     UnlinkData_t* unlinkData = (UnlinkData_t*)OICCalloc(1, sizeof(UnlinkData_t));
1340     VERIFY_NON_NULL(TAG, unlinkData, ERROR, OC_STACK_NO_MEMORY);
1341
1342     //Initialize unlink data
1343     unlinkData->ctx = ctx;
1344     unlinkData->unlinkDev = (OCProvisionDev_t*)OICCalloc(2, sizeof(OCProvisionDev_t));
1345     if (NULL == unlinkData->unlinkDev)
1346     {
1347         OIC_LOG(ERROR, TAG, "Memory allocation failed");
1348         res = OC_STACK_NO_MEMORY;
1349         goto error;
1350     }
1351
1352     unlinkData->unlinkRes = (OCProvisionResult_t*)OICCalloc(3, sizeof(OCProvisionResult_t));
1353     if (NULL == unlinkData->unlinkRes)
1354     {
1355         OIC_LOG(ERROR, TAG, "Memory allocation failed");
1356         res = OC_STACK_NO_MEMORY;
1357         goto error;
1358     }
1359
1360     memcpy(&unlinkData->unlinkDev[0], pTargetDev1, sizeof(OCProvisionDev_t));
1361     memcpy(&unlinkData->unlinkDev[1], pTargetDev2, sizeof(OCProvisionDev_t));
1362
1363     unlinkData->numOfResults = 0;
1364     unlinkData->resultCallback = resultCallback;
1365
1366     res = SendDeleteCredentialRequest((void*)unlinkData, &SRPUnlinkDevice1CB,
1367                                        &unlinkData->unlinkDev[1], &unlinkData->unlinkDev[0]);
1368     if (OC_STACK_OK != res)
1369     {
1370         OIC_LOG(ERROR, TAG, "SRPUnlinkDevices : SendDeleteCredentialRequest failed");
1371         goto error;
1372     }
1373
1374     return res;
1375
1376 error:
1377     OIC_LOG(INFO, TAG, "OUT SRPUnlinkDevices");
1378     DeleteUnlinkData_t(unlinkData);
1379     return res;
1380 }
1381
1382 static void DeleteRemoveData_t(RemoveData_t* pRemoveData)
1383 {
1384     if (pRemoveData)
1385     {
1386         OICFree(pRemoveData->revokeTargetDev);
1387         OCDeleteDiscoveredDevices(pRemoveData->linkedDevList);
1388         OICFree(pRemoveData->removeRes);
1389         OICFree(pRemoveData);
1390     }
1391 }
1392
1393 static void registerResultForRemoveDevice(RemoveData_t *removeData, OicUuid_t *pLinkedDevId,
1394                                           OCStackResult stackresult, bool hasError)
1395 {
1396     OIC_LOG_V(INFO, TAG, "Inside registerResultForRemoveDevice removeData->numOfResults is %zu\n",
1397                          removeData->numOfResults + 1);
1398     if (pLinkedDevId)
1399     {
1400         memcpy(removeData->removeRes[(removeData->numOfResults)].deviceId.id,
1401                &pLinkedDevId->id, sizeof(pLinkedDevId->id));
1402     }
1403     else
1404     {
1405         memset(removeData->removeRes[(removeData->numOfResults)].deviceId.id,
1406                0, sizeof(pLinkedDevId->id) );
1407     }
1408     removeData->removeRes[(removeData->numOfResults)].res = stackresult;
1409     removeData->hasError = hasError;
1410     ++(removeData->numOfResults);
1411
1412     // If we get suffcient result from linked devices, we have to call user callback and do free
1413     if (removeData->sizeOfResArray == removeData->numOfResults)
1414     {
1415         if(!removeData->hasError)
1416         {
1417             // Remove device info from prvisioning database
1418             if (OC_STACK_OK != PDMDeleteDevice(&removeData->revokeTargetDev->doxm->deviceID))
1419             {
1420                 OIC_LOG(ERROR, TAG, "ResultForRemoveDevice : Failed to remove device in PDM.");
1421                 removeData->hasError = true;
1422             }
1423         }
1424         removeData->resultCallback(removeData->ctx, removeData->numOfResults, removeData->removeRes,
1425                                    removeData->hasError);
1426         DeleteRemoveData_t(removeData);
1427     }
1428  }
1429
1430 /**
1431  * Callback handler of unlink first device.
1432  *
1433  * @param[in] ctx             ctx value passed to callback from calling function.
1434  * @param[in] handle          handle to an invocation
1435  * @param[in] clientResponse  Response from queries to remote servers.
1436  * @return  OC_STACK_DELETE_TRANSACTION to delete the transaction
1437  *          and  OC_STACK_KEEP_TRANSACTION to keep it.
1438  */
1439 static OCStackApplicationResult SRPRemoveDeviceCB(void *delDevCtx, OCDoHandle handle,
1440         OCClientResponse *clientResponse)
1441 {
1442     //Update the delete credential into delete device context
1443     //Save the deleted status in delDevCtx
1444     (void)handle;
1445     OIC_LOG_V(INFO, TAG, "Inside SRPRemoveDeviceCB.");
1446     VERIFY_NON_NULL(TAG, delDevCtx, ERROR, OC_STACK_DELETE_TRANSACTION);
1447     OCStackResult res = OC_STACK_ERROR;
1448
1449     RemoveData_t* removeData = (RemoveData_t*)delDevCtx;
1450
1451     if (clientResponse)
1452     {
1453         OicUuid_t revDevUuid = {.id={0}};
1454         if(UUID_LENGTH == clientResponse->identity.id_length)
1455         {
1456             memcpy(revDevUuid.id, clientResponse->identity.id, sizeof(revDevUuid.id));
1457             if (OC_STACK_RESOURCE_DELETED == clientResponse->result)
1458             {
1459                 res = PDMUnlinkDevices(&removeData->revokeTargetDev->doxm->deviceID, &revDevUuid);
1460                 if (OC_STACK_OK != res)
1461                 {
1462                     OIC_LOG(ERROR, TAG, "PDMSetLinkStale() FAIL: PDB is an obsolete one.");
1463                            registerResultForRemoveDevice(removeData, &revDevUuid,
1464                            OC_STACK_INCONSISTENT_DB, true);
1465
1466                     return OC_STACK_DELETE_TRANSACTION;
1467                 }
1468
1469                 registerResultForRemoveDevice(removeData, &revDevUuid,
1470                                               OC_STACK_RESOURCE_DELETED, false);
1471             }
1472             else
1473             {
1474                 registerResultForRemoveDevice(removeData, &revDevUuid,
1475                                               clientResponse->result, true);
1476                 OIC_LOG(ERROR, TAG, "Unexpected result from DELETE credential request!");
1477             }
1478         }
1479         else
1480         {
1481             OIC_LOG_V(WARNING, TAG, "Incorrect length of device UUID was sent from %s:%d",
1482                      clientResponse->devAddr.addr, clientResponse->devAddr.port);
1483
1484             if (OC_STACK_RESOURCE_DELETED == clientResponse->result)
1485             {
1486                 /**
1487                   * Since server's credential was deleted,
1488                   * register result as OC_STACK_INCONSISTENT_DB with NULL UUID.
1489                   */
1490                 OIC_LOG_V(ERROR, TAG, "But server's credential was deleted.");
1491                 registerResultForRemoveDevice(removeData, NULL, OC_STACK_INCONSISTENT_DB, true);
1492             }
1493             else
1494             {
1495                 registerResultForRemoveDevice(removeData, NULL, clientResponse->result, true);
1496             }
1497         }
1498     }
1499     else
1500     {
1501         registerResultForRemoveDevice(removeData, NULL, OC_STACK_ERROR, true);
1502         OIC_LOG(ERROR, TAG, "SRPRemoveDevices received Null clientResponse");
1503     }
1504
1505
1506     return OC_STACK_DELETE_TRANSACTION;
1507 }
1508
1509 static OCStackResult GetListofDevToReqDeleteCred(const OCProvisionDev_t* pRevokeTargetDev,
1510                                                  OCProvisionDev_t* pOwnedDevList,
1511                                                  OCUuidList_t* pLinkedUuidList,
1512                                                  OCProvisionDev_t** ppLinkedDevList,
1513                                                  size_t *numOfLinkedDev)
1514 {
1515     // pOwnedDevList could be NULL. It means no alived and owned device now.
1516     if (pRevokeTargetDev == NULL || pLinkedUuidList == NULL ||\
1517         ppLinkedDevList == NULL || numOfLinkedDev == NULL)
1518     {
1519         return OC_STACK_INVALID_PARAM;
1520     }
1521
1522     size_t cnt = 0;
1523     OCUuidList_t *curUuid = NULL, *tmpUuid = NULL;
1524     LL_FOREACH_SAFE(pLinkedUuidList, curUuid, tmpUuid)
1525     {
1526         // Mark the link status stale.
1527         OCStackResult res = PDMSetLinkStale(&curUuid->dev, &pRevokeTargetDev->doxm->deviceID);
1528         if (OC_STACK_OK != res)
1529         {
1530             OIC_LOG(FATAL, TAG, "PDMSetLinkStale() FAIL: PDB is an obsolete one.");
1531             return OC_STACK_INCONSISTENT_DB;
1532         }
1533
1534         if (pOwnedDevList)
1535         {
1536             // If this linked device is alive (power-on), add the deivce to the list.
1537             OCProvisionDev_t *curDev = NULL, *tmpDev = NULL;
1538             LL_FOREACH_SAFE(pOwnedDevList, curDev, tmpDev)
1539             {
1540                 if (memcmp(curDev->doxm->deviceID.id, curUuid->dev.id, sizeof(curUuid->dev.id)) == 0)
1541                 {
1542                     OCProvisionDev_t* targetDev = PMCloneOCProvisionDev(curDev);
1543                     if (NULL == targetDev)
1544                     {
1545                         OIC_LOG(ERROR, TAG, "SRPRemoveDevice : Cloning OCProvisionDev_t Failed.");
1546                         return OC_STACK_NO_MEMORY;
1547                     }
1548
1549                     LL_PREPEND(*ppLinkedDevList, targetDev);
1550                     cnt++;
1551                     break;
1552                 }
1553             }
1554         }
1555     }
1556     *numOfLinkedDev = cnt;
1557     return OC_STACK_OK;
1558 }
1559
1560 /*
1561 * Function to device revocation
1562 * This function will remove credential of target device from all devices in subnet.
1563 *
1564 * @param[in] ctx Application context would be returned in result callback
1565 * @param[in] waitTimeForOwnedDeviceDiscovery Maximum wait time for owned device discovery.(seconds)
1566 * @param[in] pTargetDev Device information to be revoked.
1567 * @param[in] resultCallback callback provided by API user, callback will be called when
1568 *            credential revocation is finished.
1569 * @return  OC_STACK_OK in case of success and other value otherwise.
1570 *          If OC_STACK_OK is returned, the caller of this API should wait for callback.
1571 *          OC_STACK_CONTINUE means operation is success but no request is need to be initiated.
1572 */
1573 OCStackResult SRPRemoveDevice(void* ctx, unsigned short waitTimeForOwnedDeviceDiscovery,
1574                              const OCProvisionDev_t* pTargetDev, OCProvisionResultCB resultCallback)
1575 {
1576     OIC_LOG(INFO, TAG, "IN SRPRemoveDevice");
1577
1578     if (!pTargetDev  || 0 == waitTimeForOwnedDeviceDiscovery)
1579     {
1580         OIC_LOG(INFO, TAG, "SRPRemoveDevice : NULL parameters");
1581         return OC_STACK_INVALID_PARAM;
1582     }
1583     if (!resultCallback)
1584     {
1585         OIC_LOG(INFO, TAG, "SRPRemoveDevice : NULL Callback");
1586         return OC_STACK_INVALID_CALLBACK;
1587     }
1588
1589     // Declare variables in here to handle error cases with goto statement.
1590     OCProvisionDev_t* pOwnedDevList = NULL;
1591     OCProvisionDev_t* pLinkedDevList = NULL;
1592     RemoveData_t* removeData = NULL;
1593
1594     //1. Find all devices that has a credential of the revoked device
1595     OCUuidList_t* pLinkedUuidList = NULL;
1596     size_t numOfDevices = 0;
1597     OCStackResult res = OC_STACK_ERROR;
1598     res = PDMGetLinkedDevices(&pTargetDev->doxm->deviceID, &pLinkedUuidList, &numOfDevices);
1599     if (OC_STACK_OK != res)
1600     {
1601         OIC_LOG(ERROR, TAG, "SRPRemoveDevice : Failed to get linked devices information");
1602         return res;
1603     }
1604     // if there is no related device, we can skip further process.
1605     if (0 == numOfDevices)
1606     {
1607         OIC_LOG(DEBUG, TAG, "SRPRemoveDevice : No linked device found.");
1608         res = OC_STACK_CONTINUE;
1609         goto error;
1610     }
1611
1612     //2. Find owned device from the network
1613     res = PMDeviceDiscovery(waitTimeForOwnedDeviceDiscovery, true, &pOwnedDevList);
1614     if (OC_STACK_OK != res)
1615     {
1616         OIC_LOG(ERROR, TAG, "SRPRemoveDevice : Failed to PMDeviceDiscovery");
1617         goto error;
1618     }
1619
1620     //3. Make a list of devices to send DELETE credential request
1621     //   by comparing owned devices from provisioning database with mutlicast discovery result.
1622     size_t numOfLinkedDev = 0;
1623     res = GetListofDevToReqDeleteCred(pTargetDev, pOwnedDevList, pLinkedUuidList,
1624                                       &pLinkedDevList, &numOfLinkedDev);
1625     if (OC_STACK_OK != res)
1626     {
1627         OIC_LOG(ERROR, TAG, "SRPRemoveDevice : GetListofDevToReqDeleteCred() failed");
1628         goto error;
1629     }
1630     if (0 == numOfLinkedDev) // This case means, there is linked device but it's not alive now.
1631     {                       // So we don't have to send request message.
1632         OIC_LOG(DEBUG, TAG, "SRPRemoveDevice : No alived & linked device found.");
1633         res = OC_STACK_CONTINUE;
1634         goto error;
1635     }
1636
1637     // 4. Prepare RemoveData Context data.
1638     removeData = (RemoveData_t*)OICCalloc(1, sizeof(RemoveData_t));
1639     if (!removeData)
1640     {
1641         OIC_LOG(ERROR, TAG, "SRPRemoveDevices : Failed to memory allocation");
1642         res = OC_STACK_NO_MEMORY;
1643         goto error;
1644     }
1645
1646     removeData->revokeTargetDev = PMCloneOCProvisionDev(pTargetDev);
1647     if (!removeData->revokeTargetDev)
1648     {
1649         OIC_LOG(ERROR, TAG, "SRPRemoveDevices : PMCloneOCProvisionDev Failed");
1650         res = OC_STACK_NO_MEMORY;
1651         goto error;
1652     }
1653
1654     removeData->removeRes =
1655         (OCProvisionResult_t*)OICCalloc(numOfLinkedDev, sizeof(OCProvisionResult_t));
1656     if (!removeData->removeRes)
1657     {
1658         OIC_LOG(ERROR, TAG, "SRPRemoveDevices : Failed to memory allocation");
1659         res = OC_STACK_NO_MEMORY;
1660         goto error;
1661     }
1662
1663     removeData->ctx = ctx;
1664     removeData->linkedDevList = pLinkedDevList;
1665     removeData->resultCallback = resultCallback;
1666     removeData->numOfResults = 0;
1667     removeData->sizeOfResArray = numOfLinkedDev;
1668     removeData->hasError = false;
1669
1670     // 5. Send DELETE credential request to linked devices.
1671     OCProvisionDev_t *curDev = NULL, *tmpDev = NULL;
1672     OCStackResult totalRes = OC_STACK_ERROR;  /* variable for checking request is sent or not */
1673     LL_FOREACH_SAFE(pLinkedDevList, curDev, tmpDev)
1674     {
1675         res = SendDeleteCredentialRequest((void*)removeData, &SRPRemoveDeviceCB,
1676                                            removeData->revokeTargetDev, curDev);
1677         if (OC_STACK_OK != res)
1678         {
1679             OIC_LOG_V(ERROR, TAG, "SRPRemoveDevice : Fail to send the DELETE credential request to\
1680                      %s:%u", curDev->endpoint.addr, curDev->endpoint.port);
1681         }
1682         else
1683         {
1684             totalRes = OC_STACK_OK; // This means at least one request is successfully sent.
1685         }
1686     }
1687
1688     PDMDestoryOicUuidLinkList(pLinkedUuidList); //TODO: Modify API name to have unified convention.
1689     PMDeleteDeviceList(pOwnedDevList);
1690     OIC_LOG(INFO, TAG, "OUT SRPRemoveDevice");
1691
1692     return totalRes; // Caller of this API should wait callback if totalRes == OC_STACK_OK.
1693
1694 error:
1695     PDMDestoryOicUuidLinkList(pLinkedUuidList);
1696     PMDeleteDeviceList(pOwnedDevList);
1697     PMDeleteDeviceList(pLinkedDevList);
1698     if (removeData)
1699     {
1700         OICFree(removeData->revokeTargetDev);
1701         OICFree(removeData->removeRes);
1702         OICFree(removeData);
1703     }
1704     OIC_LOG(INFO, TAG, "OUT ERROR case SRPRemoveDevice");
1705     return res;
1706 }