1 /******************************************************************
3 * Copyright 2014 Samsung Electronics All Rights Reserved.
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
11 * http://www.apache.org/licenses/LICENSE-2.0
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.
19 ******************************************************************/
21 // Defining _BSD_SOURCE or _DEFAULT_SOURCE causes header files to expose
22 // definitions that may otherwise be skipped. Skipping can cause implicit
23 // declaration warnings and/or bugs and subtle problems in code execution.
24 // For glibc information on feature test macros,
25 // Refer http://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html
27 // For details on compatibility and glibc support,
28 // Refer http://www.gnu.org/software/libc/manual/html_node/BSD-Random.html
29 #define _DEFAULT_SOURCE
31 #include "iotivity_config.h"
40 #include "caprotocolmessage.h"
42 #include "oic_malloc.h"
43 #include "oic_string.h"
45 #include "cacommonutil.h"
47 #define TAG "OIC_CA_PRTCL_MSG"
49 #define CA_PDU_MIN_SIZE (4)
50 #define CA_ENCODE_BUFFER_SIZE (4)
52 static const char COAP_URI_HEADER[] = "coap://[::]/";
54 static char g_chproxyUri[CA_MAX_URI_LENGTH];
56 CAResult_t CASetProxyUri(const char *uri)
58 VERIFY_NON_NULL(uri, TAG, "uri");
59 OICStrcpy(g_chproxyUri, sizeof (g_chproxyUri), uri);
63 CAResult_t CAGetRequestInfoFromPDU(const coap_pdu_t *pdu, const CAEndpoint_t *endpoint,
64 CARequestInfo_t *outReqInfo)
66 VERIFY_NON_NULL(pdu, TAG, "pdu");
67 VERIFY_NON_NULL(outReqInfo, TAG, "outReqInfo");
69 uint32_t code = CA_NOT_FOUND;
70 CAResult_t ret = CAGetInfoFromPDU(pdu, endpoint, &code, &(outReqInfo->info));
71 outReqInfo->method = code;
76 CAResult_t CAGetResponseInfoFromPDU(const coap_pdu_t *pdu, CAResponseInfo_t *outResInfo,
77 const CAEndpoint_t *endpoint)
79 VERIFY_NON_NULL(pdu, TAG, "pdu");
80 VERIFY_NON_NULL(outResInfo, TAG, "outResInfo");
82 uint32_t code = CA_NOT_FOUND;
83 CAResult_t ret = CAGetInfoFromPDU(pdu, endpoint, &code, &(outResInfo->info));
84 outResInfo->result = code;
89 CAResult_t CAGetErrorInfoFromPDU(const coap_pdu_t *pdu, const CAEndpoint_t *endpoint,
90 CAErrorInfo_t *errorInfo)
92 VERIFY_NON_NULL(pdu, TAG, "pdu");
95 CAResult_t ret = CAGetInfoFromPDU(pdu, endpoint, &code, &errorInfo->info);
100 coap_pdu_t *CAGeneratePDU(uint32_t code, const CAInfo_t *info, const CAEndpoint_t *endpoint,
101 coap_list_t **optlist, coap_transport_t *transport)
103 VERIFY_NON_NULL_RET(info, TAG, "info", NULL);
104 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint", NULL);
105 VERIFY_NON_NULL_RET(optlist, TAG, "optlist", NULL);
107 coap_pdu_t *pdu = NULL;
109 // RESET have to use only 4byte (empty message)
110 // and ACKNOWLEDGE can use empty message when code is empty.
111 if (CA_MSG_RESET == info->type || (CA_EMPTY == code && CA_MSG_ACKNOWLEDGE == info->type))
113 if (CA_EMPTY != code)
115 OIC_LOG(ERROR, TAG, "reset is not empty message");
119 if (info->payloadSize > 0 || info->payload || info->token || info->tokenLength > 0)
121 OIC_LOG(ERROR, TAG, "Empty message has unnecessary data after messageID");
125 OIC_LOG(DEBUG, TAG, "code is empty");
126 if (!(pdu = CAGeneratePDUImpl((code_t) code, info, endpoint, NULL, transport)))
128 OIC_LOG(ERROR, TAG, "pdu NULL");
134 if (info->resourceUri)
136 uint32_t length = strlen(info->resourceUri);
137 if (CA_MAX_URI_LENGTH < length)
139 OIC_LOG(ERROR, TAG, "URI len err");
143 uint32_t uriLength = length + sizeof(COAP_URI_HEADER);
144 char *coapUri = (char *) OICCalloc(1, uriLength);
147 OIC_LOG(ERROR, TAG, "out of memory");
150 OICStrcat(coapUri, uriLength, COAP_URI_HEADER);
151 OICStrcat(coapUri, uriLength, info->resourceUri);
153 // parsing options in URI
154 CAResult_t res = CAParseURI(coapUri, optlist);
155 if (CA_STATUS_OK != res)
163 // parsing options in HeadOption
164 CAResult_t ret = CAParseHeadOption(code, info, optlist);
165 if (CA_STATUS_OK != ret)
170 pdu = CAGeneratePDUImpl((code_t) code, info, endpoint, *optlist, transport);
173 OIC_LOG(ERROR, TAG, "pdu NULL");
178 // pdu print method : coap_show_pdu(pdu);
182 coap_pdu_t *CAParsePDU(const char *data, size_t length, uint32_t *outCode,
183 const CAEndpoint_t *endpoint)
185 VERIFY_NON_NULL_RET(data, TAG, "data", NULL);
186 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint", NULL);
188 coap_transport_t transport = COAP_UDP;
190 if (CAIsSupportedCoAPOverTCP(endpoint->adapter))
192 transport = coap_get_tcp_header_type_from_initbyte(((unsigned char *)data)[0] >> 4);
197 coap_pdu_init2(0, 0, ntohs(COAP_INVALID_TID), length, transport);
200 OIC_LOG(ERROR, TAG, "outpdu is null");
204 OIC_LOG_V(DEBUG, TAG, "pdu parse-transport type : %d", transport);
206 int ret = coap_pdu_parse2((unsigned char *) data, length, outpdu, transport);
207 OIC_LOG_V(DEBUG, TAG, "pdu parse ret: %d", ret);
210 OIC_LOG(ERROR, TAG, "pdu parse failed");
215 if (CAIsSupportedCoAPOverTCP(endpoint->adapter))
217 OIC_LOG(INFO, TAG, "there is no version info in coap header");
222 if (outpdu->transport_hdr->udp.version != COAP_DEFAULT_VERSION)
224 OIC_LOG_V(ERROR, TAG, "coap version is not available : %d",
225 outpdu->transport_hdr->udp.version);
228 if (outpdu->transport_hdr->udp.token_length > CA_MAX_TOKEN_LEN)
230 OIC_LOG_V(ERROR, TAG, "token length has been exceed : %d",
231 outpdu->transport_hdr->udp.token_length);
238 (*outCode) = (uint32_t) CA_RESPONSE_CODE(coap_get_code(outpdu, transport));
244 coap_delete_pdu(outpdu);
248 coap_pdu_t *CAGeneratePDUImpl(code_t code, const CAInfo_t *info,
249 const CAEndpoint_t *endpoint, coap_list_t *options,
250 coap_transport_t *transport)
252 VERIFY_NON_NULL_RET(info, TAG, "info", NULL);
253 VERIFY_NON_NULL_RET(endpoint, TAG, "endpoint", NULL);
254 VERIFY_NON_NULL_RET(transport, TAG, "transport", NULL);
256 unsigned int length = COAP_MAX_PDU_SIZE;
258 unsigned int msgLength = 0;
259 if (CAIsSupportedCoAPOverTCP(endpoint->adapter))
263 unsigned short prevOptNumber = 0;
264 for (coap_list_t *opt = options; opt; opt = opt->next)
266 unsigned short curOptNumber = COAP_OPTION_KEY(*(coap_option *) opt->data);
267 if (prevOptNumber > curOptNumber)
269 OIC_LOG(ERROR, TAG, "option list is wrong");
273 size_t optValueLen = COAP_OPTION_LENGTH(*(coap_option *) opt->data);
274 size_t optLength = coap_get_opt_header_length(curOptNumber - prevOptNumber, optValueLen);
277 OIC_LOG(ERROR, TAG, "Reserved for the Payload marker for the option");
280 msgLength += optLength;
281 prevOptNumber = curOptNumber;
282 OIC_LOG_V(DEBUG, TAG, "curOptNumber[%d], prevOptNumber[%d], optValueLen[%zu], "
283 "optLength[%zu], msgLength[%d]",
284 curOptNumber, prevOptNumber, optValueLen, optLength, msgLength);
288 if (info->payloadSize > 0)
290 msgLength = msgLength + info->payloadSize + PAYLOAD_MARKER;
292 *transport = coap_get_tcp_header_type_from_size(msgLength);
293 length = msgLength + coap_get_tcp_header_length_for_transport(*transport)
299 *transport = COAP_UDP;
302 coap_pdu_t *pdu = coap_new_pdu2(*transport, length);
306 OIC_LOG(ERROR, TAG, "malloc failed");
310 OIC_LOG_V(DEBUG, TAG, "transport type: %d, payload size: %zu",
311 *transport, info->payloadSize);
314 if (CAIsSupportedCoAPOverTCP(endpoint->adapter))
316 coap_add_length(pdu, *transport, msgLength);
321 OIC_LOG_V(DEBUG, TAG, "msgID is %d", info->messageId);
322 uint16_t message_id = 0;
323 if (0 == info->messageId)
325 /* initialize message id */
326 prng((uint8_t * ) &message_id, sizeof(message_id));
328 OIC_LOG_V(DEBUG, TAG, "gen msg id=%d", message_id);
332 /* use saved message id */
333 message_id = info->messageId;
335 pdu->transport_hdr->udp.id = message_id;
336 OIC_LOG_V(DEBUG, TAG, "messageId in pdu is %d, %d", message_id, pdu->transport_hdr->udp.id);
338 pdu->transport_hdr->udp.type = info->type;
341 coap_add_code(pdu, *transport, code);
343 if (info->token && CA_EMPTY != code)
345 uint32_t tokenLength = info->tokenLength;
346 OIC_LOG_V(DEBUG, TAG, "token info token length: %d, token :", tokenLength);
347 OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *)info->token, tokenLength);
349 int32_t ret = coap_add_token2(pdu, tokenLength, (unsigned char *)info->token, *transport);
352 OIC_LOG(ERROR, TAG, "can't add token");
357 if (CA_ADAPTER_GATT_BTLE != endpoint->adapter
359 && !CAIsSupportedCoAPOverTCP(endpoint->adapter)
363 // option list will be added in blockwise-transfer
370 for (coap_list_t *opt = options; opt; opt = opt->next)
372 OIC_LOG_V(DEBUG, TAG, "[%s] opt will be added.",
373 COAP_OPTION_DATA(*(coap_option *) opt->data));
375 OIC_LOG_V(DEBUG, TAG, "[%d] pdu length", pdu->length);
376 coap_add_option2(pdu, COAP_OPTION_KEY(*(coap_option *) opt->data),
377 COAP_OPTION_LENGTH(*(coap_option *) opt->data),
378 COAP_OPTION_DATA(*(coap_option *) opt->data), *transport);
382 OIC_LOG_V(DEBUG, TAG, "[%d] pdu length after option", pdu->length);
384 if (NULL != info->payload && 0 < info->payloadSize)
386 OIC_LOG(DEBUG, TAG, "payload is added");
387 coap_add_data(pdu, info->payloadSize, (const unsigned char *) info->payload);
393 CAResult_t CAParseURI(const char *uriInfo, coap_list_t **optlist)
395 VERIFY_NON_NULL(uriInfo, TAG, "uriInfo");
396 VERIFY_NON_NULL(optlist, TAG, "optlist");
398 OIC_LOG_V(DEBUG, TAG, "url : %s", uriInfo);
400 /* split arg into Uri-* options */
402 coap_split_uri((unsigned char *) uriInfo, strlen(uriInfo), &uri);
404 if (uri.port != COAP_DEFAULT_PORT)
406 unsigned char portbuf[CA_ENCODE_BUFFER_SIZE] = { 0 };
407 int ret = coap_insert(optlist,
408 CACreateNewOptionNode(COAP_OPTION_URI_PORT,
409 coap_encode_var_bytes(portbuf, uri.port),
414 return CA_STATUS_INVALID_PARAM;
418 if (uri.path.s && uri.path.length)
420 CAResult_t ret = CAParseUriPartial(uri.path.s, uri.path.length,
421 COAP_OPTION_URI_PATH, optlist);
422 if (CA_STATUS_OK != ret)
424 OIC_LOG(ERROR, TAG, "CAParseUriPartial failed(uri path)");
429 if (uri.query.s && uri.query.length)
431 CAResult_t ret = CAParseUriPartial(uri.query.s, uri.query.length, COAP_OPTION_URI_QUERY,
433 if (CA_STATUS_OK != ret)
435 OIC_LOG(ERROR, TAG, "CAParseUriPartial failed(uri query)");
443 CAResult_t CAParseUriPartial(const unsigned char *str, size_t length, int target,
444 coap_list_t **optlist)
446 VERIFY_NON_NULL(optlist, TAG, "optlist");
448 if ((target != COAP_OPTION_URI_PATH) && (target != COAP_OPTION_URI_QUERY))
450 // should never occur. Log just in case.
451 OIC_LOG(DEBUG, TAG, "Unexpected URI component.");
452 return CA_NOT_SUPPORTED;
454 else if (str && length)
456 unsigned char uriBuffer[CA_MAX_URI_LENGTH] = { 0 };
457 unsigned char *pBuf = uriBuffer;
458 size_t buflen = sizeof(uriBuffer);
459 int res = (target == COAP_OPTION_URI_PATH) ? coap_split_path(str, length, pBuf, &buflen) :
460 coap_split_query(str, length, pBuf, &buflen);
467 int ret = coap_insert(optlist,
468 CACreateNewOptionNode(target, COAP_OPT_LENGTH(pBuf),
469 (char *)COAP_OPT_VALUE(pBuf)),
473 return CA_STATUS_INVALID_PARAM;
476 size_t optSize = COAP_OPT_SIZE(pBuf);
477 if ((prevIdx + optSize) < buflen)
486 OIC_LOG_V(ERROR, TAG, "Problem parsing URI : %d for %d", res, target);
487 return CA_STATUS_FAILED;
492 OIC_LOG(ERROR, TAG, "str or length is not available");
493 return CA_STATUS_FAILED;
499 CAResult_t CAParseHeadOption(uint32_t code, const CAInfo_t *info, coap_list_t **optlist)
502 VERIFY_NON_NULL_RET(info, TAG, "info", CA_STATUS_INVALID_PARAM);
504 OIC_LOG_V(DEBUG, TAG, "parse Head Opt: %d", info->numOptions);
508 OIC_LOG(ERROR, TAG, "optlist is null");
509 return CA_STATUS_INVALID_PARAM;
512 for (uint32_t i = 0; i < info->numOptions; i++)
514 if(!(info->options + i))
516 OIC_LOG(ERROR, TAG, "options is not available");
517 return CA_STATUS_FAILED;
520 uint32_t id = (info->options + i)->optionID;
521 if (COAP_OPTION_URI_PATH == id || COAP_OPTION_URI_QUERY == id)
523 OIC_LOG_V(DEBUG, TAG, "not Header Opt: %d", id);
527 OIC_LOG_V(DEBUG, TAG, "Head opt ID: %d", id);
528 OIC_LOG_V(DEBUG, TAG, "Head opt data: %s", (info->options + i)->optionData);
529 OIC_LOG_V(DEBUG, TAG, "Head opt length: %d", (info->options + i)->optionLength);
530 int ret = coap_insert(optlist,
531 CACreateNewOptionNode(id, (info->options + i)->optionLength,
532 (info->options + i)->optionData),
536 return CA_STATUS_INVALID_PARAM;
541 // insert one extra header with the payload format if applicable.
542 if (CA_FORMAT_UNDEFINED != info->payloadFormat)
544 coap_list_t* node = NULL;
545 uint8_t buf[CA_ENCODE_BUFFER_SIZE] = {0};
546 switch (info->payloadFormat)
548 case CA_FORMAT_APPLICATION_CBOR:
549 node = CACreateNewOptionNode(
550 COAP_OPTION_CONTENT_FORMAT,
551 coap_encode_var_bytes(buf, (unsigned short)COAP_MEDIATYPE_APPLICATION_CBOR),
555 OIC_LOG_V(ERROR, TAG, "format option:[%d] not supported", info->payloadFormat);
559 OIC_LOG(ERROR, TAG, "format option not created");
560 return CA_STATUS_INVALID_PARAM;
562 int ret = coap_insert(optlist, node, CAOrderOpts);
566 OIC_LOG(ERROR, TAG, "format option not inserted in header");
567 return CA_STATUS_INVALID_PARAM;
570 if (CA_FORMAT_UNDEFINED != info->acceptFormat)
572 coap_list_t* node = NULL;
573 uint8_t buf[CA_ENCODE_BUFFER_SIZE] = {0};
574 switch (info->acceptFormat)
576 case CA_FORMAT_APPLICATION_CBOR:
577 node = CACreateNewOptionNode(
579 coap_encode_var_bytes(buf, (unsigned short)COAP_MEDIATYPE_APPLICATION_CBOR),
583 OIC_LOG_V(ERROR, TAG, "format option:[%d] not supported", info->acceptFormat);
587 OIC_LOG(ERROR, TAG, "format option not created");
588 return CA_STATUS_INVALID_PARAM;
590 int ret = coap_insert(optlist, node, CAOrderOpts);
594 OIC_LOG(ERROR, TAG, "format option not inserted in header");
595 return CA_STATUS_INVALID_PARAM;
602 coap_list_t *CACreateNewOptionNode(uint16_t key, uint32_t length, const char *data)
604 VERIFY_NON_NULL_RET(data, TAG, "data", NULL);
606 coap_option *option = coap_malloc(sizeof(coap_option) + length + 1);
609 OIC_LOG(ERROR, TAG, "Out of memory");
612 memset(option, 0, sizeof(coap_option) + length + 1);
614 COAP_OPTION_KEY(*option) = key;
616 coap_option_def_t* def = coap_opt_def(key);
617 if (NULL != def && coap_is_var_bytes(def))
619 if (length > def->max)
621 // make sure we shrink the value so it fits the coap option definition
622 // by truncating the value, disregard the leading bytes.
623 OIC_LOG_V(DEBUG, TAG, "Option [%d] data size [%d] shrunk to [%d]",
624 def->key, length, def->max);
625 data = &(data[length-def->max]);
628 // Shrink the encoding length to a minimum size for coap
629 // options that support variable length encoding.
630 COAP_OPTION_LENGTH(*option) = coap_encode_var_bytes(
631 COAP_OPTION_DATA(*option),
632 coap_decode_var_bytes((unsigned char *)data, length));
636 COAP_OPTION_LENGTH(*option) = length;
637 memcpy(COAP_OPTION_DATA(*option), data, length);
640 /* we can pass NULL here as delete function since option is released automatically */
641 coap_list_t *node = coap_new_listnode(option, NULL);
645 OIC_LOG(ERROR, TAG, "node is NULL");
653 int CAOrderOpts(void *a, void *b)
657 return a < b ? -1 : 1;
660 if (COAP_OPTION_KEY(*(coap_option *) a) < COAP_OPTION_KEY(*(coap_option * ) b))
665 return COAP_OPTION_KEY(*(coap_option *) a) == COAP_OPTION_KEY(*(coap_option * ) b);
668 uint32_t CAGetOptionCount(coap_opt_iterator_t opt_iter)
671 coap_opt_t *option = NULL;
673 while ((option = coap_option_next(&opt_iter)))
675 if (COAP_OPTION_URI_PATH != opt_iter.type && COAP_OPTION_URI_QUERY != opt_iter.type
676 && COAP_OPTION_BLOCK1 != opt_iter.type && COAP_OPTION_BLOCK2 != opt_iter.type
677 && COAP_OPTION_SIZE1 != opt_iter.type && COAP_OPTION_SIZE2 != opt_iter.type
678 && COAP_OPTION_CONTENT_FORMAT != opt_iter.type
679 && COAP_OPTION_ACCEPT != opt_iter.type
680 && COAP_OPTION_URI_HOST != opt_iter.type && COAP_OPTION_URI_PORT != opt_iter.type
681 && COAP_OPTION_ETAG != opt_iter.type && COAP_OPTION_MAXAGE != opt_iter.type
682 && COAP_OPTION_PROXY_SCHEME != opt_iter.type)
691 CAResult_t CAGetInfoFromPDU(const coap_pdu_t *pdu, const CAEndpoint_t *endpoint,
692 uint32_t *outCode, CAInfo_t *outInfo)
694 VERIFY_NON_NULL(pdu, TAG, "pdu");
695 VERIFY_NON_NULL(endpoint, TAG, "endpoint");
696 VERIFY_NON_NULL(outCode, TAG, "outCode");
697 VERIFY_NON_NULL(outInfo, TAG, "outInfo");
699 coap_transport_t transport;
701 if (CAIsSupportedCoAPOverTCP(endpoint->adapter))
703 transport = coap_get_tcp_header_type_from_initbyte(((unsigned char *)pdu->transport_hdr)[0] >> 4);
708 transport = COAP_UDP;
711 coap_opt_iterator_t opt_iter;
712 coap_option_iterator_init2((coap_pdu_t *) pdu, &opt_iter, COAP_OPT_ALL, transport);
716 (*outCode) = (uint32_t) CA_RESPONSE_CODE(coap_get_code(pdu, transport));
719 // init HeaderOption list
720 uint32_t count = CAGetOptionCount(opt_iter);
721 memset(outInfo, 0, sizeof(*outInfo));
723 outInfo->numOptions = count;
726 if (CAIsSupportedCoAPOverTCP(endpoint->adapter))
729 outInfo->type = CA_MSG_NONCONFIRM;
730 outInfo->payloadFormat = CA_FORMAT_UNDEFINED;
738 outInfo->type = pdu->transport_hdr->udp.type;
741 outInfo->messageId = pdu->transport_hdr->udp.id;
742 outInfo->payloadFormat = CA_FORMAT_UNDEFINED;
743 outInfo->acceptFormat = CA_FORMAT_UNDEFINED;
748 outInfo->options = (CAHeaderOption_t *) OICCalloc(count, sizeof(CAHeaderOption_t));
749 if (NULL == outInfo->options)
751 OIC_LOG(ERROR, TAG, "Out of memory");
752 return CA_MEMORY_ALLOC_FAILED;
756 coap_opt_t *option = NULL;
757 char optionResult[CA_MAX_URI_LENGTH] = {0};
759 uint32_t optionLength = 0;
760 bool isfirstsetflag = false;
761 bool isQueryBeingProcessed = false;
762 bool isProxyRequest = false;
764 while ((option = coap_option_next(&opt_iter)))
766 char buf[COAP_MAX_PDU_SIZE] = {0};
768 CAGetOptionData(opt_iter.type, (uint8_t *)(COAP_OPT_VALUE(option)),
769 COAP_OPT_LENGTH(option), (uint8_t *)buf, sizeof(buf));
772 OIC_LOG_V(DEBUG, TAG, "COAP URI element : %s", buf);
773 if (COAP_OPTION_URI_PATH == opt_iter.type || COAP_OPTION_URI_QUERY == opt_iter.type)
775 if (false == isfirstsetflag)
777 isfirstsetflag = true;
778 optionResult[optionLength] = '/';
780 // Make sure there is enough room in the optionResult buffer
781 if ((optionLength + bufLength) < sizeof(optionResult))
783 memcpy(&optionResult[optionLength], buf, bufLength);
784 optionLength += bufLength;
793 if (COAP_OPTION_URI_PATH == opt_iter.type)
795 // Make sure there is enough room in the optionResult buffer
796 if (optionLength < sizeof(optionResult))
798 optionResult[optionLength] = '/';
806 else if (COAP_OPTION_URI_QUERY == opt_iter.type)
808 if (false == isQueryBeingProcessed)
810 // Make sure there is enough room in the optionResult buffer
811 if (optionLength < sizeof(optionResult))
813 optionResult[optionLength] = '?';
815 isQueryBeingProcessed = true;
824 // Make sure there is enough room in the optionResult buffer
825 if (optionLength < sizeof(optionResult))
827 optionResult[optionLength] = ';';
836 // Make sure there is enough room in the optionResult buffer
837 if ((optionLength + bufLength) < sizeof(optionResult))
839 memcpy(&optionResult[optionLength], buf, bufLength);
840 optionLength += bufLength;
848 else if (COAP_OPTION_BLOCK1 == opt_iter.type || COAP_OPTION_BLOCK2 == opt_iter.type
849 || COAP_OPTION_SIZE1 == opt_iter.type || COAP_OPTION_SIZE2 == opt_iter.type)
851 OIC_LOG_V(DEBUG, TAG, "option[%d] will be filtering", opt_iter.type);
853 else if (COAP_OPTION_CONTENT_FORMAT == opt_iter.type)
855 if (1 == COAP_OPT_LENGTH(option))
857 outInfo->payloadFormat = CAConvertFormat((uint8_t)buf[0]);
861 outInfo->payloadFormat = CA_FORMAT_UNSUPPORTED;
862 OIC_LOG_V(DEBUG, TAG, "option[%d] has an unsupported format [%d]",
863 opt_iter.type, (uint8_t)buf[0]);
866 else if (COAP_OPTION_ACCEPT == opt_iter.type)
868 if (1 == COAP_OPT_LENGTH(option))
870 outInfo->acceptFormat = CAConvertFormat((uint8_t)buf[0]);
874 outInfo->acceptFormat = CA_FORMAT_UNSUPPORTED;
876 OIC_LOG_V(DEBUG, TAG, "option[%d] has an unsupported format [%d]",
877 opt_iter.type, (uint8_t)buf[0]);
879 else if (COAP_OPTION_URI_PORT == opt_iter.type ||
880 COAP_OPTION_URI_HOST == opt_iter.type ||
881 COAP_OPTION_ETAG == opt_iter.type ||
882 COAP_OPTION_MAXAGE == opt_iter.type ||
883 COAP_OPTION_PROXY_SCHEME== opt_iter.type)
885 OIC_LOG_V(INFO, TAG, "option[%d] has an unsupported format [%d]",
886 opt_iter.type, (uint8_t)buf[0]);
890 if (COAP_OPTION_PROXY_URI == opt_iter.type)
892 isProxyRequest = true;
896 if (bufLength <= sizeof(outInfo->options[0].optionData))
898 outInfo->options[idx].optionID = opt_iter.type;
899 outInfo->options[idx].optionLength = bufLength;
900 outInfo->options[idx].protocolID = CA_COAP_ID;
901 memcpy(outInfo->options[idx].optionData, buf, bufLength);
909 unsigned char* token = NULL;
910 unsigned int token_length = 0;
911 coap_get_token2(pdu->transport_hdr, transport, &token, &token_length);
914 if (token_length > 0)
916 OIC_LOG_V(DEBUG, TAG, "inside token length : %d", token_length);
917 outInfo->token = (char *) OICMalloc(token_length);
918 if (NULL == outInfo->token)
920 OIC_LOG(ERROR, TAG, "Out of memory");
921 OICFree(outInfo->options);
922 return CA_MEMORY_ALLOC_FAILED;
924 memcpy(outInfo->token, token, token_length);
927 outInfo->tokenLength = token_length;
932 if (coap_get_data(pdu, &dataSize, &data))
934 OIC_LOG(DEBUG, TAG, "inside pdu->data");
935 outInfo->payload = (uint8_t *) OICMalloc(dataSize);
936 if (NULL == outInfo->payload)
938 OIC_LOG(ERROR, TAG, "Out of memory");
939 OICFree(outInfo->options);
940 OICFree(outInfo->token);
941 return CA_MEMORY_ALLOC_FAILED;
943 memcpy(outInfo->payload, pdu->data, dataSize);
944 outInfo->payloadSize = dataSize;
947 if (optionResult[0] != '\0')
949 OIC_LOG_V(DEBUG, TAG, "URL length:%zu", strlen(optionResult));
950 outInfo->resourceUri = OICStrdup(optionResult);
951 if (!outInfo->resourceUri)
953 OIC_LOG(ERROR, TAG, "Out of memory");
954 OICFree(outInfo->options);
955 OICFree(outInfo->token);
956 return CA_MEMORY_ALLOC_FAILED;
959 else if(isProxyRequest && g_chproxyUri[0] != '\0')
962 * A request for Proxy will not have any uri element as per CoAP specs
963 * and only COAP_OPTION_PROXY_URI will be present. Use preset proxy uri
966 outInfo->resourceUri = OICStrdup(g_chproxyUri);
967 if (!outInfo->resourceUri)
969 OIC_LOG(ERROR, TAG, "Out of memory");
970 OICFree(outInfo->options);
971 OICFree(outInfo->token);
972 return CA_MEMORY_ALLOC_FAILED;
978 OIC_LOG(ERROR, TAG, "buffer too small");
979 OICFree(outInfo->options);
980 return CA_STATUS_FAILED;
983 CAResult_t CAGetTokenFromPDU(const coap_hdr_transport_t *pdu_hdr,
985 const CAEndpoint_t *endpoint)
987 VERIFY_NON_NULL(pdu_hdr, TAG, "pdu_hdr");
988 VERIFY_NON_NULL(outInfo, TAG, "outInfo");
989 VERIFY_NON_NULL(endpoint, TAG, "endpoint");
991 coap_transport_t transport = COAP_UDP;
993 if (CAIsSupportedCoAPOverTCP(endpoint->adapter))
995 transport = coap_get_tcp_header_type_from_initbyte(((unsigned char *)pdu_hdr)[0] >> 4);
999 unsigned char* token = NULL;
1000 unsigned int token_length = 0;
1001 coap_get_token2(pdu_hdr, transport, &token, &token_length);
1004 if (token_length > 0)
1006 OIC_LOG_V(DEBUG, TAG, "token len:%d", token_length);
1007 outInfo->token = (char *) OICMalloc(token_length);
1008 if (NULL == outInfo->token)
1010 OIC_LOG(ERROR, TAG, "Out of memory");
1011 return CA_MEMORY_ALLOC_FAILED;
1013 memcpy(outInfo->token, token, token_length);
1016 outInfo->tokenLength = token_length;
1018 return CA_STATUS_OK;
1021 CAResult_t CAGenerateTokenInternal(CAToken_t *token, uint8_t tokenLength)
1023 VERIFY_NON_NULL(token, TAG, "token");
1025 if ((tokenLength > CA_MAX_TOKEN_LEN) || (0 == tokenLength))
1027 OIC_LOG(ERROR, TAG, "invalid token length");
1028 return CA_STATUS_INVALID_PARAM;
1031 // memory allocation
1032 char *temp = (char *) OICCalloc(tokenLength, sizeof(char));
1035 OIC_LOG(ERROR, TAG, "Out of memory");
1036 return CA_MEMORY_ALLOC_FAILED;
1039 OCFillRandomMem((uint8_t *)temp, tokenLength);
1044 OIC_LOG_V(DEBUG, TAG, "token len:%d, token:", tokenLength);
1045 OIC_LOG_BUFFER(DEBUG, TAG, (const uint8_t *)(*token), tokenLength);
1047 return CA_STATUS_OK;
1050 void CADestroyTokenInternal(CAToken_t token)
1055 uint32_t CAGetOptionData(uint16_t key, const uint8_t *data, uint32_t len,
1056 uint8_t *option, uint32_t buflen)
1060 OIC_LOG(ERROR, TAG, "buflen 0");
1066 OIC_LOG(ERROR, TAG, "option buffer too small");
1070 coap_option_def_t* def = coap_opt_def(key);
1071 if (NULL != def && coap_is_var_bytes(def) && 0 == len)
1073 // A 0 length option is permitted in CoAP but the
1074 // rest or the stack is unaware of variable byte encoding
1075 // should remain that way so a 0 byte of length 1 is inserted.
1081 memcpy(option, data, len);
1088 CAMessageType_t CAGetMessageTypeFromPduBinaryData(const void *pdu, uint32_t size)
1090 VERIFY_NON_NULL_RET(pdu, TAG, "pdu", CA_MSG_NONCONFIRM);
1092 // pdu minimum size is 4 byte.
1093 if (size < CA_PDU_MIN_SIZE)
1095 OIC_LOG(ERROR, TAG, "min size");
1096 return CA_MSG_NONCONFIRM;
1099 coap_hdr_t *hdr = (coap_hdr_t *) pdu;
1101 return (CAMessageType_t) hdr->type;
1104 uint16_t CAGetMessageIdFromPduBinaryData(const void *pdu, uint32_t size)
1106 VERIFY_NON_NULL_RET(pdu, TAG, "pdu", 0);
1108 // pdu minimum size is 4 byte.
1109 if (size < CA_PDU_MIN_SIZE)
1111 OIC_LOG(ERROR, TAG, "min size");
1115 coap_hdr_t *hdr = (coap_hdr_t *) pdu;
1120 CAResponseResult_t CAGetCodeFromPduBinaryData(const void *pdu, uint32_t size)
1122 VERIFY_NON_NULL_RET(pdu, TAG, "pdu", CA_NOT_FOUND);
1124 // pdu minimum size is 4 byte.
1125 if (size < CA_PDU_MIN_SIZE)
1127 OIC_LOG(ERROR, TAG, "min size");
1128 return CA_NOT_FOUND;
1131 coap_hdr_t *hdr = (coap_hdr_t *) pdu;
1133 return (CAResponseResult_t) CA_RESPONSE_CODE(hdr->code);
1136 CAPayloadFormat_t CAConvertFormat(uint8_t format)
1140 case COAP_MEDIATYPE_TEXT_PLAIN:
1141 return CA_FORMAT_TEXT_PLAIN;
1142 case COAP_MEDIATYPE_APPLICATION_LINK_FORMAT:
1143 return CA_FORMAT_APPLICATION_LINK_FORMAT;
1144 case COAP_MEDIATYPE_APPLICATION_XML:
1145 return CA_FORMAT_APPLICATION_XML;
1146 case COAP_MEDIATYPE_APPLICATION_OCTET_STREAM:
1147 return CA_FORMAT_APPLICATION_OCTET_STREAM;
1148 case COAP_MEDIATYPE_APPLICATION_RDF_XML:
1149 return CA_FORMAT_APPLICATION_RDF_XML;
1150 case COAP_MEDIATYPE_APPLICATION_EXI:
1151 return CA_FORMAT_APPLICATION_EXI;
1152 case COAP_MEDIATYPE_APPLICATION_JSON:
1153 return CA_FORMAT_APPLICATION_JSON;
1154 case COAP_MEDIATYPE_APPLICATION_CBOR:
1155 return CA_FORMAT_APPLICATION_CBOR;
1157 return CA_FORMAT_UNSUPPORTED;
1162 bool CAIsSupportedBlockwiseTransfer(CATransportAdapter_t adapter)
1164 if (CA_ADAPTER_IP & adapter || CA_ADAPTER_NFC & adapter
1165 || CA_DEFAULT_ADAPTER == adapter)
1174 bool CAIsSupportedCoAPOverTCP(CATransportAdapter_t adapter)
1176 if (CA_ADAPTER_GATT_BTLE & adapter || CA_ADAPTER_RFCOMM_BTEDR & adapter
1177 || CA_ADAPTER_TCP & adapter || CA_DEFAULT_ADAPTER == adapter)