credresource.c 36.4 KB
Newer Older
Sachin Agrawal's avatar
Sachin Agrawal committed
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20
//******************************************************************
//
// Copyright 2015 Intel Mobile Communications GmbH All Rights Reserved.
//
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
//      http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
//
//-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

21
#define __STDC_LIMIT_MACROS
Sachin Agrawal's avatar
Sachin Agrawal committed
22 23 24 25 26 27 28 29 30 31 32 33 34 35
#include "ocstack.h"
#include "logger.h"
#include "oic_malloc.h"
#include "cJSON.h"
#include "resourcemanager.h"
#include "psinterface.h"
#include "utlist.h"
#include "srmresourcestrings.h"
#include "credresource.h"
#include "ocrandom.h"
#include "doxmresource.h"
#include "base64.h"
#include "srmutility.h"
#include "cainterface.h"
36
#include "pbkdf2.h"
Sachin Agrawal's avatar
Sachin Agrawal committed
37
#include <stdlib.h>
38
#include "iotvticalendar.h"
39
#ifdef WITH_ARDUINO
Sachin Agrawal's avatar
Sachin Agrawal committed
40
#include <string.h>
41 42 43
#else
#include <strings.h>
#endif
44 45
#include <stdint.h>

46
#define TAG  "SRM-CREDL"
Sachin Agrawal's avatar
Sachin Agrawal committed
47

Shilpa Sodani's avatar
Shilpa Sodani committed
48

Sachin Agrawal's avatar
Sachin Agrawal committed
49 50 51
static OicSecCred_t        *gCred = NULL;
static OCResourceHandle    gCredHandle = NULL;

52 53 54 55
/**
 * This function frees OicSecCred_t object's fields and object itself.
 */
static void FreeCred(OicSecCred_t *cred)
Sachin Agrawal's avatar
Sachin Agrawal committed
56
{
57
    if(NULL == cred)
Sachin Agrawal's avatar
Sachin Agrawal committed
58
    {
59
        OC_LOG (ERROR, TAG, "Invalid Parameter");
60 61 62
        return;
    }
    //Note: Need further clarification on roleID data type
Sachin Agrawal's avatar
Sachin Agrawal committed
63
#if 0
64 65
    //Clean roleIds
    OICFree(cred->roleIds);
Sachin Agrawal's avatar
Sachin Agrawal committed
66 67
#endif

68 69
    //Clean PublicData
    OICFree(cred->publicData.data);
Sachin Agrawal's avatar
Sachin Agrawal committed
70

71 72
    //Clean PrivateData
    OICFree(cred->privateData.data);
Sachin Agrawal's avatar
Sachin Agrawal committed
73

74 75
    //Clean Period
    OICFree(cred->period);
Sachin Agrawal's avatar
Sachin Agrawal committed
76

77 78 79 80 81 82
    //Clean Owners
    OICFree(cred->owners);

    //Clean Cred node itself
    OICFree(cred);
}
Sachin Agrawal's avatar
Sachin Agrawal committed
83

84 85 86 87 88 89 90 91 92
void DeleteCredList(OicSecCred_t* cred)
{
    if (cred)
    {
        OicSecCred_t *credTmp1 = NULL, *credTmp2 = NULL;
        LL_FOREACH_SAFE(cred, credTmp1, credTmp2)
        {
            LL_DELETE(cred, credTmp1);
            FreeCred(credTmp1);
Sachin Agrawal's avatar
Sachin Agrawal committed
93 94 95 96 97 98 99 100 101 102 103 104 105 106
        }
    }
}

/**
 * This function converts credential data into JSON format.
 * Caller needs to invoke 'free' when done using
 * returned string.
 * @param cred  pointer to instance of OicSecCred_t structure.
 *
 * @retval
 *      pointer to JSON credential representation - if credential for subjectId found
 *      NULL                                      - if credential for subjectId not found
 */
107
char * BinToCredJSON(const OicSecCred_t * cred)
Sachin Agrawal's avatar
Sachin Agrawal committed
108 109 110 111 112 113 114 115 116
{
    cJSON *jsonRoot = NULL;
    char *jsonStr = NULL;

    if (cred)
    {
        char base64Buff[B64ENCODE_OUT_SAFESIZE(sizeof(((OicUuid_t*)0)->id)) + 1] = {};
        uint32_t outLen = 0;
        B64Result b64Ret = B64_OK;
117

118 119 120 121 122 123
        jsonRoot = cJSON_CreateObject();
        VERIFY_NON_NULL(TAG, jsonRoot, ERROR);

        cJSON *jsonCredArray = NULL;
        cJSON_AddItemToObject(jsonRoot, OIC_JSON_CRED_NAME,
                jsonCredArray = cJSON_CreateArray());
Sachin Agrawal's avatar
Sachin Agrawal committed
124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139
        VERIFY_NON_NULL(TAG, jsonCredArray, ERROR);

        while(cred)
        {
            cJSON *jsonCred = cJSON_CreateObject();
            VERIFY_NON_NULL(TAG, jsonCred, ERROR);

            //CredID -- Mandatory
            cJSON_AddNumberToObject(jsonCred, OIC_JSON_CREDID_NAME, (int)cred->credId);

            //Subject -- Mandatory
            outLen = 0;
            memset(base64Buff, 0, sizeof(base64Buff));
            b64Ret = b64Encode(cred->subject.id, sizeof(cred->subject.id), base64Buff,
                   sizeof(base64Buff), &outLen);
            VERIFY_SUCCESS(TAG, b64Ret == B64_OK, ERROR);
140
            cJSON_AddStringToObject(jsonCred, OIC_JSON_SUBJECT_NAME, base64Buff);
Sachin Agrawal's avatar
Sachin Agrawal committed
141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161

            //Note: Need further clarification on roleID data type
#if 0
            //RoleId -- Not Mandatory
            if(cred->roleIdsLen > 0)
            {
                cJSON *jsonRoleIdsArray = NULL;
                cJSON_AddItemToObject (jsonCred, OIC_JSON_ROLEIDS_NAME,
                                         jsonRoleIdsArray = cJSON_CreateArray());
                VERIFY_NON_NULL(TAG, jsonRoleIdsArray, ERROR);
                for (size_t i = 0; i < cred->roleIdsLen; i++)
                {
                    cJSON_AddItemToArray (jsonRoleIdsArray,
                            cJSON_CreateString((char *)cred->roleIds[i].id));
                }
            }
#endif

            //CredType -- Mandatory
            cJSON_AddNumberToObject(jsonCred, OIC_JSON_CREDTYPE_NAME,(int)cred->credType);

Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
162
#ifdef __WITH_X509__
Sachin Agrawal's avatar
Sachin Agrawal committed
163 164 165
            //PublicData -- Not Mandatory
            if(cred->publicData.data)
            {
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
166 167 168 169 170 171 172
                if (SIGNED_ASYMMETRIC_KEY == cred->credType)
                {
                    cJSON_AddItemToObject(jsonCred, OIC_JSON_PUBLICDATA_NAME,
                                          cJSON_Parse(cred->publicData.data));
                }
                else
                {
Sachin Agrawal's avatar
Sachin Agrawal committed
173
                cJSON_AddStringToObject(jsonCred, OIC_JSON_PUBLICDATA_NAME, cred->publicData.data);
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
174
                }
Sachin Agrawal's avatar
Sachin Agrawal committed
175
            }
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
176
#endif /*__WITH_X509__*/
Sachin Agrawal's avatar
Sachin Agrawal committed
177 178 179
            //PrivateData -- Not Mandatory
            if(cred->privateData.data)
            {
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
180 181 182 183 184 185 186 187 188 189 190
#ifdef __WITH_X509__
                if (SIGNED_ASYMMETRIC_KEY == cred->credType)
                {
                    cJSON_AddItemToObject(jsonCred, OIC_JSON_PRIVATEDATA_NAME,
                                          cJSON_Parse(cred->privateData.data));
                }
                else
                {
                    cJSON_AddStringToObject(jsonCred, OIC_JSON_PRIVATEDATA_NAME, cred->privateData.data);
                }
#else
Sachin Agrawal's avatar
Sachin Agrawal committed
191
                cJSON_AddStringToObject(jsonCred, OIC_JSON_PRIVATEDATA_NAME, cred->privateData.data);
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
192
#endif
Sachin Agrawal's avatar
Sachin Agrawal committed
193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236
            }

            //Period -- Not Mandatory
            if(cred->period)
            {
                cJSON_AddStringToObject(jsonCred, OIC_JSON_PERIOD_NAME,
                                        cred->period);
            }

            //Owners -- Mandatory
            cJSON *jsonOwnrArray = NULL;
            cJSON_AddItemToObject (jsonCred, OIC_JSON_OWNERS_NAME,
                                             jsonOwnrArray = cJSON_CreateArray());
            VERIFY_NON_NULL(TAG, jsonOwnrArray, ERROR);
            for (size_t i = 0; i < cred->ownersLen; i++)
            {
                outLen = 0;
                memset(base64Buff, 0, sizeof(base64Buff));
                b64Ret = b64Encode(cred->owners[i].id, sizeof(cred->owners[i].id),
                        base64Buff, sizeof(base64Buff), &outLen);
                VERIFY_SUCCESS(TAG, b64Ret == B64_OK, ERROR);
                cJSON_AddItemToArray (jsonOwnrArray,
                                       cJSON_CreateString((char *)(base64Buff)));
            }

            /* Attach current cred node to cred Array */
            cJSON_AddItemToArray(jsonCredArray, jsonCred);
            cred = cred->next;
        }

        jsonStr = cJSON_PrintUnformatted(jsonRoot);
    }

exit:
    if (jsonRoot)
    {
        cJSON_Delete(jsonRoot);
    }
    return jsonStr;
}

/*
 * This internal method converts JSON cred into binary cred.
 */
237
OicSecCred_t * JSONToCredBin(const char * jsonStr)
Sachin Agrawal's avatar
Sachin Agrawal committed
238 239 240 241 242 243 244 245 246
{
    OCStackResult ret = OC_STACK_ERROR;
    OicSecCred_t * headCred = NULL;
    OicSecCred_t * prevCred = NULL;
    cJSON *jsonCredArray = NULL;

    cJSON *jsonRoot = cJSON_Parse(jsonStr);
    VERIFY_NON_NULL(TAG, jsonRoot, ERROR);

247
    jsonCredArray = cJSON_GetObjectItem(jsonRoot, OIC_JSON_CRED_NAME);
Sachin Agrawal's avatar
Sachin Agrawal committed
248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276
    VERIFY_NON_NULL(TAG, jsonCredArray, ERROR);
    if (cJSON_Array == jsonCredArray->type)
    {
        int numCred = cJSON_GetArraySize(jsonCredArray);
        int idx = 0;

        unsigned char base64Buff[sizeof(((OicUuid_t*)0)->id)] = {};
        uint32_t outLen = 0;
        B64Result b64Ret = B64_OK;

        VERIFY_SUCCESS(TAG, numCred > 0, ERROR);
        do
        {
            cJSON *jsonCred = cJSON_GetArrayItem(jsonCredArray, idx);
            VERIFY_NON_NULL(TAG, jsonCred, ERROR);

            OicSecCred_t *cred = (OicSecCred_t*)OICCalloc(1, sizeof(OicSecCred_t));
            VERIFY_NON_NULL(TAG, cred, ERROR);

            headCred = (headCred) ? headCred : cred;
            if (prevCred)
            {
                prevCred->next = cred;
            }
            size_t jsonObjLen = 0;
            cJSON *jsonObj = NULL;

            //CredId -- Mandatory
            jsonObj = cJSON_GetObjectItem(jsonCred, OIC_JSON_CREDID_NAME);
277 278 279 280 281
            if(jsonObj)
            {
                VERIFY_SUCCESS(TAG, cJSON_Number == jsonObj->type, ERROR);
                cred->credId = jsonObj->valueint;
            }
Sachin Agrawal's avatar
Sachin Agrawal committed
282 283

            //subject -- Mandatory
284
            jsonObj = cJSON_GetObjectItem(jsonCred, OIC_JSON_SUBJECT_NAME);
Sachin Agrawal's avatar
Sachin Agrawal committed
285
            VERIFY_NON_NULL(TAG, jsonObj, ERROR);
286
            VERIFY_SUCCESS(TAG, cJSON_String == jsonObj->type, ERROR);
Sachin Agrawal's avatar
Sachin Agrawal committed
287 288 289 290 291 292 293 294 295 296 297
            outLen = 0;
            memset(base64Buff, 0, sizeof(base64Buff));
            b64Ret = b64Decode(jsonObj->valuestring, strlen(jsonObj->valuestring),
                    base64Buff, sizeof(base64Buff), &outLen);
            VERIFY_SUCCESS(TAG, (b64Ret == B64_OK && outLen <= sizeof(cred->subject.id)),
                           ERROR);
            memcpy(cred->subject.id, base64Buff, outLen);

            //CredType -- Mandatory
            jsonObj = cJSON_GetObjectItem(jsonCred, OIC_JSON_CREDTYPE_NAME);
            VERIFY_NON_NULL(TAG, jsonObj, ERROR);
298
            VERIFY_SUCCESS(TAG, cJSON_Number == jsonObj->type, ERROR);
299
            cred->credType = (OicSecCredType_t)jsonObj->valueint;
Sachin Agrawal's avatar
Sachin Agrawal committed
300 301 302 303 304 305 306 307 308 309

            //PrivateData is mandatory for some of the credential types listed below.
            jsonObj = cJSON_GetObjectItem(jsonCred, OIC_JSON_PRIVATEDATA_NAME);
            if ((cred->credType & SYMMETRIC_PAIR_WISE_KEY) ||
                (cred->credType & SYMMETRIC_GROUP_KEY) ||
                (cred->credType & PIN_PASSWORD))
            {
                VERIFY_NON_NULL(TAG, jsonObj, ERROR);
                VERIFY_SUCCESS(TAG, cJSON_String == jsonObj->type, ERROR);
            }
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
310 311
#ifdef __WITH_X509__
            else if (cred->credType & SIGNED_ASYMMETRIC_KEY)
Sachin Agrawal's avatar
Sachin Agrawal committed
312
            {
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359
                VERIFY_NON_NULL(TAG, jsonObj, ERROR);
                VERIFY_SUCCESS(TAG, cJSON_Object == jsonObj->type, ERROR);
            }
#endif //  __WITH_X509__
            if (NULL != jsonObj)
            {
                if (cJSON_String == jsonObj->type)
                {
                    jsonObjLen = strlen(jsonObj->valuestring) + 1;
                    cred->privateData.data = (char *)OICMalloc(jsonObjLen);
                    VERIFY_NON_NULL(TAG, (cred->privateData.data), ERROR);
                    strncpy((char *)cred->privateData.data, (char *)jsonObj->valuestring, jsonObjLen);
                }
#ifdef __WITH_X509__
                else if (SIGNED_ASYMMETRIC_KEY == cred->credType && cJSON_Object == jsonObj->type)
                {
                    cred->privateData.data = cJSON_PrintUnformatted(jsonObj);
                    VERIFY_NON_NULL(TAG, (cred->privateData.data), ERROR);
                }
#endif // __WITH_X509__
            }

            //PublicData is mandatory only for SIGNED_ASYMMETRIC_KEY credentials type.
            jsonObj = cJSON_GetObjectItem(jsonCred, OIC_JSON_PUBLICDATA_NAME);
#ifdef __WITH_X509__
            if (cred->credType & SIGNED_ASYMMETRIC_KEY)
            {
                VERIFY_NON_NULL(TAG, jsonObj, ERROR);
                VERIFY_SUCCESS(TAG, cJSON_Object == jsonObj->type, ERROR);
            }
#endif //  __WITH_X509__
            if (NULL != jsonObj)
            {
                if (cJSON_String == jsonObj->type)
                {
                    jsonObjLen = strlen(jsonObj->valuestring) + 1;
                    cred->publicData.data = (char *)OICMalloc(jsonObjLen);
                    VERIFY_NON_NULL(TAG, (cred->publicData.data), ERROR);
                    strncpy((char *)cred->publicData.data, (char *)jsonObj->valuestring, jsonObjLen);
                }
#ifdef __WITH_X509__
                else if (SIGNED_ASYMMETRIC_KEY == cred->credType && cJSON_Object == jsonObj->type)
                {
                    cred->publicData.data = cJSON_PrintUnformatted(jsonObj);
                    VERIFY_NON_NULL(TAG, (cred->publicData.data), ERROR);
                }
#endif //  __WITH_X509__
Sachin Agrawal's avatar
Sachin Agrawal committed
360 361 362 363 364 365 366 367 368 369 370 371 372 373 374
            }

            //Period -- Not Mandatory
            jsonObj = cJSON_GetObjectItem(jsonCred, OIC_JSON_PERIOD_NAME);
            if(jsonObj && cJSON_String == jsonObj->type)
            {
                jsonObjLen = strlen(jsonObj->valuestring) + 1;
                cred->period = (char *)OICMalloc(jsonObjLen);
                VERIFY_NON_NULL(TAG, cred->period, ERROR);
                strncpy(cred->period, jsonObj->valuestring, jsonObjLen);
            }

            //Owners -- Mandatory
            jsonObj = cJSON_GetObjectItem(jsonCred, OIC_JSON_OWNERS_NAME);
            VERIFY_NON_NULL(TAG, jsonObj, ERROR);
375
            VERIFY_SUCCESS(TAG, cJSON_Array == jsonObj->type, ERROR);
Sachin Agrawal's avatar
Sachin Agrawal committed
376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415
            cred->ownersLen = cJSON_GetArraySize(jsonObj);
            VERIFY_SUCCESS(TAG, cred->ownersLen > 0, ERROR);
            cred->owners = (OicUuid_t*)OICCalloc(cred->ownersLen, sizeof(OicUuid_t));
            VERIFY_NON_NULL(TAG, (cred->owners), ERROR);
            for(size_t i = 0; i < cred->ownersLen; i++)
            {
                cJSON *jsonOwnr = cJSON_GetArrayItem(jsonObj, i);
                VERIFY_NON_NULL(TAG, jsonOwnr, ERROR);
                VERIFY_SUCCESS(TAG, cJSON_String == jsonOwnr->type, ERROR);
                outLen = 0;
                memset(base64Buff, 0, sizeof(base64Buff));
                b64Ret = b64Decode(jsonOwnr->valuestring, strlen(jsonOwnr->valuestring),
                         base64Buff, sizeof(base64Buff), &outLen);
                VERIFY_SUCCESS(TAG, (b64Ret == B64_OK &&
                               outLen <= sizeof(cred->owners[i].id)), ERROR);
                memcpy(cred->owners[i].id, base64Buff, outLen);
            }
            prevCred = cred;
        } while( ++idx < numCred);
    }

    ret = OC_STACK_OK;

exit:
    cJSON_Delete(jsonRoot);
    if (OC_STACK_OK != ret)
    {
        DeleteCredList(headCred);
        headCred = NULL;
    }
    return headCred;
}

/**
 * This function generates the bin credential data.
 *
 * @param subject pointer to subject of this credential.
 * @param credType credential type.
 * @param publicData public data such as public key.
 * @param privateData private data such as private key.
416
 *        The privateData is expected in base64 encoded format.
Sachin Agrawal's avatar
Sachin Agrawal committed
417 418 419 420 421 422 423 424 425 426 427
 * @param ownersLen length of owners array
 * @param owners array of owners.
 *
 * @retval
 *      pointer to instance of OicSecCred_t  - success
 *      NULL                                 - error
 */
OicSecCred_t * GenerateCredential(const OicUuid_t * subject, OicSecCredType_t credType,
                                 const char * publicData, const char * privateData,
                                 size_t ownersLen, const OicUuid_t * owners)
{
Jon A. Cruz's avatar
Jon A. Cruz committed
428
    (void)publicData;
Sachin Agrawal's avatar
Sachin Agrawal committed
429 430 431 432 433
    OCStackResult ret = OC_STACK_ERROR;

    OicSecCred_t *cred = (OicSecCred_t*)OICCalloc(1, sizeof(OicSecCred_t));
    VERIFY_NON_NULL(TAG, cred, ERROR);

434 435 436
    //CredId is assigned before appending new cred to the existing
    //credential list and updating svr database in AddCredential().
    cred->credId = 0;
Sachin Agrawal's avatar
Sachin Agrawal committed
437 438 439 440

    VERIFY_NON_NULL(TAG, subject, ERROR);
    memcpy(cred->subject.id, subject->id , sizeof(cred->subject.id));

441 442
    VERIFY_SUCCESS(TAG, credType < (NO_SECURITY_MODE | SYMMETRIC_PAIR_WISE_KEY |
            SYMMETRIC_GROUP_KEY | ASYMMETRIC_KEY | SIGNED_ASYMMETRIC_KEY | PIN_PASSWORD), ERROR);
Sachin Agrawal's avatar
Sachin Agrawal committed
443 444
    cred->credType = credType;

Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
445
#ifdef __WITH_X509__
Sachin Agrawal's avatar
Sachin Agrawal committed
446 447 448 449 450 451
    if(publicData)
    {
        cred->publicData.data = (char *)OICMalloc(strlen(publicData)+1);
        VERIFY_NON_NULL(TAG, cred->publicData.data, ERROR);
        strncpy((char *)cred->publicData.data, publicData, strlen(publicData)+1);
    }
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
452
#endif // __WITH_X509__
Sachin Agrawal's avatar
Sachin Agrawal committed
453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480

    if(privateData)
    {
        cred->privateData.data = (char *)OICMalloc(strlen(privateData)+1);
        VERIFY_NON_NULL(TAG, cred->privateData.data, ERROR);
        strncpy((char *)cred->privateData.data, privateData, strlen(privateData)+1);
    }

    VERIFY_SUCCESS(TAG, ownersLen > 0, ERROR);
    cred->ownersLen = ownersLen;

    cred->owners = (OicUuid_t*)OICCalloc(cred->ownersLen, sizeof(OicUuid_t));
    VERIFY_NON_NULL(TAG, cred->owners, ERROR);
    for(size_t i = 0; i < cred->ownersLen; i++)
    {
        memcpy(cred->owners[i].id, owners[i].id, sizeof(cred->owners[i].id));
    }

    ret = OC_STACK_OK;
exit:
    if (OC_STACK_OK != ret)
    {
        DeleteCredList(cred);
        cred = NULL;
    }
    return cred;
}

481 482 483 484 485
static bool UpdatePersistentStorage(const OicSecCred_t *cred)
{
    bool ret = false;

    // Convert Cred data into JSON for update to persistent storage
486
    char *jsonStr = BinToCredJSON(cred);
487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509
    if (jsonStr)
    {
        cJSON *jsonCred = cJSON_Parse(jsonStr);
        OICFree(jsonStr);

        if ((jsonCred) &&
          (OC_STACK_OK == UpdateSVRDatabase(OIC_JSON_CRED_NAME, jsonCred)))
        {
            ret = true;
        }
        cJSON_Delete(jsonCred );
    }
    else //Empty cred list
    {
        if (OC_STACK_OK == UpdateSVRDatabase(OIC_JSON_CRED_NAME, NULL))
        {
            ret = true;
        }
    }
    return ret;
}

/**
510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571
 * Compare function used LL_SORT for sorting credentials
 *
 * @param first   pointer to OicSecCred_t struct
 * @param second  pointer to OicSecCred_t struct
 *
 *@retval
 *  -1    if credId of first is less than credId of second
 *   0    if credId of first is equal to credId of second
 *   1    if credId of first is greater than credId of second
 */
static int CmpCredId(const OicSecCred_t * first, const OicSecCred_t *second)
{
    if(first->credId < second->credId)
    {
        return -1;
    }
    else if(first->credId > second->credId)
    {
        return 1;
    }
    else
        return 0;
}

/**
 * GetCredId goes through the cred list and returns the next
 * available credId. The next credId could be the credId that is
 * available due deletion of OicSecCred_t object or one more than
 * credId of last credential in the list.
 *
 * @retval
 *      next available credId  - success
 *      0                      - error
 */

static uint16_t GetCredId()
{
    //Sorts credential list in incremental order of credId
    LL_SORT(gCred, CmpCredId);


    OicSecCred_t *currentCred = NULL, *credTmp = NULL;
    uint16_t nextCredId = 1;

    LL_FOREACH_SAFE(gCred, currentCred, credTmp)
    {
        if(currentCred->credId == nextCredId)
        {
            nextCredId += 1;
        }
        else
        {
            break;
        }
    }

    VERIFY_SUCCESS(TAG, nextCredId < UINT16_MAX, ERROR);
    return nextCredId;

exit:
    return 0;
}
572

573 574 575 576 577 578 579 580
/**
 * Get the default value
 * @retval  NULL for now. Update it when we finalize the default info.
 */
static OicSecCred_t* GetCredDefault()
{
    return NULL;
}
581

Sachin Agrawal's avatar
Sachin Agrawal committed
582 583 584 585 586 587 588 589 590 591 592 593 594
/**
 * This function adds the new cred to the credential list.
 *
 * @param cred pointer to new credential.
 *
 * @retval
 *      OC_STACK_OK     - cred not NULL and persistent storage gets updated
 *      OC_STACK_ERROR  - cred is NULL or fails to update persistent storage
 */
OCStackResult AddCredential(OicSecCred_t * newCred)
{
    OCStackResult ret = OC_STACK_ERROR;

595 596 597 598 599 600
    VERIFY_SUCCESS(TAG, NULL != newCred, ERROR);

    //Assigning credId to the newCred
    newCred->credId = GetCredId();

    VERIFY_SUCCESS(TAG, newCred->credId != 0, ERROR);
Sachin Agrawal's avatar
Sachin Agrawal committed
601 602 603 604

    //Append the new Cred to existing list
    LL_APPEND(gCred, newCred);

605
    if(UpdatePersistentStorage(gCred))
Sachin Agrawal's avatar
Sachin Agrawal committed
606
    {
607 608 609 610 611 612 613 614 615 616 617 618 619
        ret = OC_STACK_OK;
    }

exit:
    return ret;
}

OCStackResult RemoveCredential(const OicUuid_t *subject)
{
    OCStackResult ret = OC_STACK_ERROR;
    OicSecCred_t *cred = NULL;
    OicSecCred_t *tempCred = NULL;
    bool deleteFlag = false;
Sachin Agrawal's avatar
Sachin Agrawal committed
620

621 622 623
    LL_FOREACH_SAFE(gCred, cred, tempCred)
    {
        if(memcmp(cred->subject.id, subject->id, sizeof(subject->id)) == 0)
Sachin Agrawal's avatar
Sachin Agrawal committed
624
        {
625 626 627
            LL_DELETE(gCred, cred);
            FreeCred(cred);
            deleteFlag = 1;
Sachin Agrawal's avatar
Sachin Agrawal committed
628 629 630
        }
    }

631 632 633 634 635 636 637
    if(deleteFlag)
    {
        if(UpdatePersistentStorage(gCred))
        {
            ret = OC_STACK_RESOURCE_DELETED;
        }
    }
Sachin Agrawal's avatar
Sachin Agrawal committed
638
    return ret;
639

Sachin Agrawal's avatar
Sachin Agrawal committed
640 641
}

642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660
/**
 * Remove all credential data on credential resource and persistent storage
 *
 * @retval
 *     OC_STACK_OK              - no errors
 *     OC_STACK_ERROR           - stack process error
 */
OCStackResult RemoveAllCredentials(void)
{
    DeleteCredList(gCred);
    gCred = GetCredDefault();

    if(!UpdatePersistentStorage(gCred))
    {
        return OC_STACK_ERROR;
    }
    return OC_STACK_OK;
}

Sachin Agrawal's avatar
Sachin Agrawal committed
661 662 663 664 665
static OCEntityHandlerResult HandlePostRequest(const OCEntityHandlerRequest * ehRequest)
{
    OCEntityHandlerResult ret = OC_EH_ERROR;

    //Get binary representation of json
666
    OicSecCred_t * cred  = JSONToCredBin(((OCSecurityPayload*)ehRequest->payload)->securityData);
Sachin Agrawal's avatar
Sachin Agrawal committed
667 668 669

    if(cred)
    {
670 671 672 673
        //If the Post request credential has credId, it will be
        //discarded and the next available credId will be assigned
        //to it before getting appended to the existing credential
        //list and updating svr database.
Sachin Agrawal's avatar
Sachin Agrawal committed
674 675 676 677 678
        ret = (OC_STACK_OK == AddCredential(cred))? OC_EH_RESOURCE_CREATED : OC_EH_ERROR;
    }
    return ret;
}

679 680
static OCEntityHandlerResult HandleDeleteRequest(const OCEntityHandlerRequest *ehRequest)
{
681
    OC_LOG(DEBUG, TAG, "Processing CredDeleteRequest");
682 683 684 685 686 687 688 689 690 691 692 693 694 695 696

    OCEntityHandlerResult ehRet = OC_EH_ERROR;

    if(NULL == ehRequest->query)
   {
       return ehRet;
   }

   OicParseQueryIter_t parseIter = {.attrPos=NULL};
   OicUuid_t subject = {.id={0}};

   //Parsing REST query to get the subject
   ParseQueryIterInit((unsigned char *)ehRequest->query, &parseIter);
   while(GetNextQuery(&parseIter))
   {
697
       if(strncasecmp((char *)parseIter.attrPos, OIC_JSON_SUBJECT_NAME,
698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720
               parseIter.attrLen) == 0)
       {
           unsigned char base64Buff[sizeof(((OicUuid_t*)0)->id)] = {};
           uint32_t outLen = 0;
           B64Result b64Ret = B64_OK;

           b64Ret = b64Decode((char *)parseIter.valPos, parseIter.valLen,
                   base64Buff, sizeof(base64Buff), &outLen);

           VERIFY_SUCCESS(TAG, (b64Ret == B64_OK && outLen <= sizeof(subject.id)), ERROR);
           memcpy(subject.id, base64Buff, outLen);
       }
   }

   if(OC_STACK_RESOURCE_DELETED == RemoveCredential(&subject))
   {
       ehRet = OC_EH_RESOURCE_DELETED;
   }

exit:
    return ehRet;
}

Sachin Agrawal's avatar
Sachin Agrawal committed
721 722 723 724 725
/*
 * This internal method is the entity handler for Cred resources
 * to handle REST request (PUT/POST/DEL)
 */
OCEntityHandlerResult CredEntityHandler (OCEntityHandlerFlag flag,
726 727
                                        OCEntityHandlerRequest * ehRequest,
                                        void* callbackParameter)
Sachin Agrawal's avatar
Sachin Agrawal committed
728
{
Jon A. Cruz's avatar
Jon A. Cruz committed
729
    (void)callbackParameter;
Sachin Agrawal's avatar
Sachin Agrawal committed
730 731 732 733 734 735 736 737
    OCEntityHandlerResult ret = OC_EH_ERROR;

    if(!ehRequest)
    {
        return OC_EH_ERROR;
    }
    if (flag & OC_REQUEST_FLAG)
    {
738
        OC_LOG (DEBUG, TAG, "Flag includes OC_REQUEST_FLAG");
Sachin Agrawal's avatar
Sachin Agrawal committed
739 740 741 742 743 744 745 746 747
        //TODO :  Handle PUT/DEL methods
        switch(ehRequest->method)
        {
            case OC_REST_GET:
                ret = OC_EH_FORBIDDEN;
                break;
            case OC_REST_POST:
                ret = HandlePostRequest(ehRequest);
                break;
748 749 750
            case OC_REST_DELETE:
                ret = HandleDeleteRequest(ehRequest);
                break;
Sachin Agrawal's avatar
Sachin Agrawal committed
751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775
            default:
                ret = OC_EH_ERROR;
                break;
        }
    }

    //Send payload to request originator
    ret = (SendSRMResponse(ehRequest, ret, NULL) == OC_STACK_OK ?
                       ret : OC_EH_ERROR);

    return ret;
}

/*
 * This internal method is used to create '/oic/sec/Cred' resource.
 */
OCStackResult CreateCredResource()
{
    OCStackResult ret;

    ret = OCCreateResource(&gCredHandle,
                           OIC_RSRC_TYPE_SEC_CRED,
                           OIC_MI_DEF,
                           OIC_RSRC_CRED_URI,
                           CredEntityHandler,
776
                           NULL,
Sachin Agrawal's avatar
Sachin Agrawal committed
777 778 779 780
                           OC_RES_PROP_NONE);

    if (OC_STACK_OK != ret)
    {
781
        OC_LOG (FATAL, TAG, "Unable to instantiate Cred resource");
Sachin Agrawal's avatar
Sachin Agrawal committed
782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803
        DeInitCredResource();
    }
    return ret;
}

/**
 * Initialize Cred resource by loading data from persistent storage.
 *
 * @retval
 *     OC_STACK_OK    - no errors
 *     OC_STACK_ERROR - stack process error
 */
OCStackResult InitCredResource()
{
    OCStackResult ret = OC_STACK_ERROR;

    //Read Cred resource from PS
    char* jsonSVRDatabase = GetSVRDatabase();

    if (jsonSVRDatabase)
    {
        //Convert JSON Cred into binary format
804
        gCred = JSONToCredBin(jsonSVRDatabase);
Sachin Agrawal's avatar
Sachin Agrawal committed
805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850
    }
    /*
     * If SVR database in persistent storage got corrupted or
     * is not available for some reason, a default Cred is created
     * which allows user to initiate Cred provisioning again.
     */
    if (!jsonSVRDatabase || !gCred)
    {
        gCred = GetCredDefault();
    }
    //Instantiate 'oic.sec.cred'
    ret = CreateCredResource();
    OICFree(jsonSVRDatabase);
    return ret;
}

/**
 * Perform cleanup for Cred resources.
 *
 * @return
 *     OC_STACK_OK              - no errors
 *     OC_STACK_ERROR           - stack process error
 *     OC_STACK_NO_RESOURCE     - resource not found
 *     OC_STACK_INVALID_PARAM   - invalid param
 */
OCStackResult DeInitCredResource()
{
    OCStackResult result = OCDeleteResource(gCredHandle);
    DeleteCredList(gCred);
    gCred = NULL;
    return result;
}

/**
 * This method is used by tinydtls/SRM to retrieve credential for given Subject.
 *
 * @param subject - subject for which credential is required.
 *
 * @retval
 *     reference to OicSecCred_t - if credential is found
 *     NULL                      - if credential not found
 */
const OicSecCred_t* GetCredResourceData(const OicUuid_t* subject)
{
    OicSecCred_t *cred = NULL;

851
   if ( NULL == subject)
Sachin Agrawal's avatar
Sachin Agrawal committed
852
    {
853
       return NULL;
Sachin Agrawal's avatar
Sachin Agrawal committed
854 855 856 857 858 859
    }

    LL_FOREACH(gCred, cred)
    {
        if(memcmp(cred->subject.id, subject->id, sizeof(subject->id)) == 0)
        {
860
            return cred;
Sachin Agrawal's avatar
Sachin Agrawal committed
861 862 863 864 865 866 867 868 869 870 871
        }
    }
    return NULL;
}


#if defined(__WITH_DTLS__)
/**
 * This internal callback is used by lower stack (i.e. CA layer) to
 * retrieve PSK credentials from RI security layer.
 *
872 873 874 875 876
 * @param[in]  type type of PSK data required by tinyDTLS layer during DTLS handshake.
 * @param[in]  desc Additional request information.
 * @param[in]  desc_len The actual length of desc.
 * @param[out] result  Must be filled with the requested information.
 * @param[in]  result_length  Maximum size of @p result.
Sachin Agrawal's avatar
Sachin Agrawal committed
877
 *
878 879
 * @return The number of bytes written to @p result or a value
 *         less than zero on error.
Sachin Agrawal's avatar
Sachin Agrawal committed
880
 */
881 882 883
int32_t GetDtlsPskCredentials( CADtlsPskCredType_t type,
              const unsigned char *desc, size_t desc_len,
              unsigned char *result, size_t result_length)
Sachin Agrawal's avatar
Sachin Agrawal committed
884
{
885
    int32_t ret = -1;
Sachin Agrawal's avatar
Sachin Agrawal committed
886

887 888 889 890
    if (NULL == result)
    {
        return ret;
    }
Sachin Agrawal's avatar
Sachin Agrawal committed
891

892 893 894 895
    switch (type)
    {
        case CA_DTLS_PSK_HINT:
        case CA_DTLS_PSK_IDENTITY:
Sachin Agrawal's avatar
Sachin Agrawal committed
896
            {
897 898 899
                OicUuid_t deviceID = {.id={}};
                // Retrieve Device ID from doxm resource
                if ( OC_STACK_OK != GetDoxmDeviceID(&deviceID) )
Sachin Agrawal's avatar
Sachin Agrawal committed
900
                {
901 902
                    OC_LOG (ERROR, TAG, "Unable to retrieve doxm Device ID");
                    return ret;
Sachin Agrawal's avatar
Sachin Agrawal committed
903
                }
904 905 906 907 908 909 910 911

                if (result_length < sizeof(deviceID.id))
                {
                    OC_LOG (ERROR, TAG, "Wrong value for result_length");
                    return ret;
                }
                memcpy(result, deviceID.id, sizeof(deviceID.id));
                return (sizeof(deviceID.id));
Sachin Agrawal's avatar
Sachin Agrawal committed
912
            }
913
            break;
Sachin Agrawal's avatar
Sachin Agrawal committed
914

915 916 917
        case CA_DTLS_PSK_KEY:
            {
                OicSecCred_t *cred = NULL;
Sachin Agrawal's avatar
Sachin Agrawal committed
918 919
                LL_FOREACH(gCred, cred)
                {
920
                    if (cred->credType != SYMMETRIC_PAIR_WISE_KEY)
Sachin Agrawal's avatar
Sachin Agrawal committed
921
                    {
922 923
                        continue;
                    }
Sachin Agrawal's avatar
Sachin Agrawal committed
924

925 926 927
                    if ((desc_len == sizeof(cred->subject.id)) &&
                        (memcmp(desc, cred->subject.id, sizeof(cred->subject.id)) == 0))
                    {
928 929 930 931 932 933 934 935 936 937 938 939 940 941
                        /*
                         * If the credentials are valid for limited time,
                         * check their expiry.
                         */
                        if (cred->period)
                        {
                            if(IOTVTICAL_VALID_ACCESS != IsRequestWithinValidTime(cred->period, NULL))
                            {
                                OC_LOG (INFO, TAG, "Credentials are expired.");
                                ret = -1;
                                return ret;
                            }
                        }

942
                        // Convert PSK from Base64 encoding to binary before copying
Sachin Agrawal's avatar
Sachin Agrawal committed
943 944
                        uint32_t outLen = 0;
                        B64Result b64Ret = b64Decode(cred->privateData.data,
945 946 947 948 949 950 951 952 953
                                strlen(cred->privateData.data), result,
                                result_length, &outLen);
                        if (B64_OK != b64Ret)
                        {
                            OC_LOG (ERROR, TAG, "Base64 decoding failed.");
                            ret = -1;
                            return ret;
                        }
                        return outLen;
Sachin Agrawal's avatar
Sachin Agrawal committed
954 955 956
                    }
                }
            }
957
            break;
Sachin Agrawal's avatar
Sachin Agrawal committed
958

959 960 961 962 963 964
        default:
            {
                OC_LOG (ERROR, TAG, "Wrong value passed for CADtlsPskCredType_t.");
                ret = -1;
            }
            break;
Sachin Agrawal's avatar
Sachin Agrawal committed
965
    }
966 967

    return ret;
Sachin Agrawal's avatar
Sachin Agrawal committed
968
}
969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025

/**
 * Add temporal PSK to PIN based OxM
 *
 * @param[in] tmpSubject UUID of target device
 * @param[in] credType Type of credential to be added
 * @param[in] pin numeric characters
 * @param[in] pinSize length of 'pin'
 * @param[in] ownersLen Number of owners
 * @param[in] owners Array of owners
 * @param[out] tmpCredSubject Generated credential's subject.
 *
 * @return OC_STACK_OK for success and errorcode otherwise.
 */
OCStackResult AddTmpPskWithPIN(const OicUuid_t* tmpSubject, OicSecCredType_t credType,
                            const char * pin, size_t pinSize,
                            size_t ownersLen, const OicUuid_t * owners, OicUuid_t* tmpCredSubject)
{
    OCStackResult ret = OC_STACK_ERROR;

    if(tmpSubject == NULL || pin == NULL || pinSize == 0 || tmpCredSubject == NULL)
    {
        return OC_STACK_INVALID_PARAM;
    }

    uint8_t privData[OWNER_PSK_LENGTH_128] = {0,};
    int dtlsRes = DeriveCryptoKeyFromPassword((const unsigned char *)pin, pinSize, owners->id,
                                              UUID_LENGTH, PBKDF_ITERATIONS,
                                              OWNER_PSK_LENGTH_128, privData);
    VERIFY_SUCCESS(TAG, (dtlsRes == 0) , ERROR);

    uint32_t outLen = 0;
    char base64Buff[B64ENCODE_OUT_SAFESIZE(OWNER_PSK_LENGTH_128) + 1] = {};
    B64Result b64Ret = b64Encode(privData, OWNER_PSK_LENGTH_128, base64Buff,
                                sizeof(base64Buff), &outLen);
    VERIFY_SUCCESS(TAG, (B64_OK == b64Ret), ERROR);

    OicSecCred_t* cred = GenerateCredential(tmpSubject, credType, NULL,
                                            base64Buff, ownersLen, owners);
    if(NULL == cred)
    {
        OC_LOG(ERROR, TAG, "GeneratePskWithPIN() : Failed to generate credential");
        return OC_STACK_ERROR;
    }

    memcpy(tmpCredSubject->id, cred->subject.id, UUID_LENGTH);

    ret = AddCredential(cred);
    if( OC_STACK_OK != ret)
    {
        OC_LOG(ERROR, TAG, "GeneratePskWithPIN() : Failed to add credential");
    }

exit:
    return ret;
}

Sachin Agrawal's avatar
Sachin Agrawal committed
1026
#endif /* __WITH_DTLS__ */
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072
#ifdef __WITH_X509__
#define CERT_LEN_PREFIX (3)
#define BYTE_SIZE (8) //bits
#define PUB_KEY_X_COORD ("x")
#define PUB_KEY_Y_COORD ("y")
#define CERTIFICATE ("x5c")
#define PRIVATE_KEY ("d")


static void WriteCertPrefix(uint8_t *prefix, uint32_t certLen)
{
    for (size_t i = 0; i < CERT_LEN_PREFIX; ++i)
    {
        prefix[i] = (certLen >> (BYTE_SIZE * (CERT_LEN_PREFIX - 1 - i))) & 0xFF;
    }
}

static uint32_t ParseCertPrefix(uint8_t *prefix)
{
    uint32_t res = 0;
    if(NULL != prefix)
    {
        for(int i=0; i < CERT_LEN_PREFIX; ++i)
        {
            res |= (((uint32_t) prefix[i]) << ((CERT_LEN_PREFIX - 1 -i) * BYTE_SIZE));
        }
    }
    return res;
}

static uint32_t appendCert2Chain(uint8_t *appendPoint, char *cert, uint32_t max_len)
{
    uint32_t ret = 0;
    VERIFY_NON_NULL(TAG, appendPoint, ERROR);
    VERIFY_NON_NULL(TAG, cert, ERROR);

    uint32_t certLen;
    VERIFY_SUCCESS(TAG, B64_OK == b64Decode(cert, strlen(cert), appendPoint + CERT_LEN_PREFIX,
                                            max_len - CERT_LEN_PREFIX, &certLen), ERROR);
    WriteCertPrefix(appendPoint, certLen);

    ret = certLen + CERT_LEN_PREFIX;
exit:
    return ret;
}

1073
static OCStackResult GetCAPublicKeyData(CADtlsX509Creds_t *credInfo){
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098
    OCStackResult ret = OC_STACK_ERROR;
    uint8_t *ccPtr = credInfo->certificateChain;
    for(uint32_t i =0; i < credInfo->chainLen - 1; ++i)
    {
        ccPtr += CERT_LEN_PREFIX + ParseCertPrefix(ccPtr);
    }

    ByteArray cert = {
        .data = ccPtr + CERT_LEN_PREFIX,
        .len = ParseCertPrefix(ccPtr)
         };
    CertificateX509 certStruct;

    VERIFY_SUCCESS(TAG, PKI_SUCCESS == DecodeCertificate(cert, &certStruct), ERROR);

    INC_BYTE_ARRAY(certStruct.pubKey, 2);

    memcpy(credInfo->rootPublicKeyX, certStruct.pubKey.data, PUBLIC_KEY_SIZE / 2);
    memcpy(credInfo->rootPublicKeyY, certStruct.pubKey.data + PUBLIC_KEY_SIZE / 2, PUBLIC_KEY_SIZE / 2);

    ret = OC_STACK_OK;
    exit:
    return ret;
}

1099
static OCStackResult GetCertCredPublicData(CADtlsX509Creds_t *credInfo, OicSecCred_t *cred)
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122
{
    OCStackResult ret = OC_STACK_ERROR;
    VERIFY_NON_NULL(TAG, credInfo, ERROR);
    VERIFY_NON_NULL(TAG, cred, ERROR);
    VERIFY_NON_NULL(TAG, cred->publicData.data, ERROR);
    //VERIFY_SUCCESS(TAG, NULL == credInfo->certificateChain.data, ERROR);
    cJSON *jsonRoot = cJSON_Parse(cred->publicData.data);
    VERIFY_NON_NULL(TAG, jsonRoot, ERROR);

    //Get certificate chain
    cJSON *jsonObj = cJSON_GetObjectItem(jsonRoot, CERTIFICATE);//TODO define field names constants
    VERIFY_SUCCESS(TAG, NULL != jsonObj && cJSON_Array == jsonObj->type, ERROR);

    size_t certChainLen = cJSON_GetArraySize(jsonObj);
    credInfo->chainLen = certChainLen;
    VERIFY_SUCCESS(TAG, MAX_CHAIN_LEN >= certChainLen, ERROR);

    uint32_t len = 0;
    for (size_t i = 0; i < certChainLen; ++i)
    {
        cJSON *item = cJSON_GetArrayItem(jsonObj, i);
        VERIFY_SUCCESS(TAG, cJSON_String == item->type, ERROR);
        uint32_t appendedLen = appendCert2Chain(credInfo->certificateChain + len, item->valuestring,
1123
                                              MAX_CERT_MESSAGE_LEN - len);
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134
        VERIFY_SUCCESS(TAG, 0 != appendedLen, ERROR);
        len += appendedLen;
    }
    credInfo->certificateChainLen = len;
    VERIFY_SUCCESS(TAG, OC_STACK_OK == GetCAPublicKeyData(credInfo), ERROR);
    ret = OC_STACK_OK;
exit:
    cJSON_Delete(jsonRoot);
    return ret;
}

1135
static OCStackResult GetCertCredPrivateData(CADtlsX509Creds_t *credInfo, OicSecCred_t *cred)
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158
{
    OCStackResult ret = OC_STACK_ERROR;
    VERIFY_NON_NULL(TAG, credInfo, ERROR);
    VERIFY_NON_NULL(TAG, cred, ERROR);
    VERIFY_NON_NULL(TAG, cred->privateData.data, ERROR);
    cJSON *jsonRoot = cJSON_Parse(cred->privateData.data);
    VERIFY_NON_NULL(TAG, jsonRoot, ERROR);

    cJSON *jsonObj = cJSON_GetObjectItem(jsonRoot, PRIVATE_KEY);//TODO define field names constants
    VERIFY_SUCCESS(TAG, NULL != jsonObj && cJSON_String == jsonObj->type, ERROR);

    uint32_t read = 0u;
    VERIFY_SUCCESS(TAG, B64_OK == b64Decode(jsonObj->valuestring, strlen(jsonObj->valuestring),
                                            credInfo->devicePrivateKey, PRIVATE_KEY_SIZE, &read)
                   && PRIVATE_KEY_SIZE == read, ERROR);

    ret = OC_STACK_OK;

exit:
    cJSON_Delete(jsonRoot);
    return ret;
}

1159
int GetDtlsX509Credentials(CADtlsX509Creds_t *credInfo)
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
1160
{
1161
    int ret = 1;
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174
    VERIFY_NON_NULL(TAG, credInfo, ERROR);
    if (NULL == gCred)
    {
        VERIFY_SUCCESS(TAG, OC_STACK_OK == InitCredResource(), ERROR);
    }

    OicSecCred_t *cred = NULL;
    LL_SEARCH_SCALAR(gCred, cred, credType, SIGNED_ASYMMETRIC_KEY);
    VERIFY_NON_NULL(TAG, cred, ERROR);

    VERIFY_SUCCESS(TAG, OC_STACK_OK == GetCertCredPrivateData(credInfo, cred), ERROR);
    VERIFY_SUCCESS(TAG, OC_STACK_OK == GetCertCredPublicData(credInfo, cred), ERROR);

1175
    ret = 0;
Dmitrii Zhuravlev's avatar
Dmitrii Zhuravlev committed
1176 1177 1178 1179 1180 1181
exit:

    return ret;
}
#undef CERT_LEN_PREFIX
#endif /* __WITH_X509__ */