1 //******************************************************************
3 // Copyright 2014 Intel Mobile Communications GmbH All Rights Reserved.
5 //-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=
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 _POSIX_C_SOURCE macro with 200112L (or greater) as value
22 // causes header files to expose definitions
23 // corresponding to the POSIX.1-2001 base
24 // specification (excluding the XSI extension).
25 // For POSIX.1-2001 base specification,
26 // Refer http://pubs.opengroup.org/onlinepubs/009695399/
27 #define _POSIX_C_SOURCE 200112L
28 #include "occollection.h"
31 #include "ocstackinternal.h"
32 #include "ocresourcehandler.h"
35 #include "oic_malloc.h"
36 #include "oic_string.h"
37 #include "ocpayload.h"
38 #include "payload_logging.h"
43 #define WITH_GROUPACTION 1
47 #define TAG PCF("occollection")
49 #define NUM_PARAM_IN_QUERY 2 // The expected number of parameters in a query
50 #define NUM_FIELDS_IN_QUERY 2 // The expected number of fields in a query
52 static OCStackResult CheckRTParamSupport(const OCResource* resource, const char* rtPtr)
54 if(!resource || !rtPtr)
56 return OC_STACK_INVALID_PARAM;
59 OCResourceType* rTPointer = resource->rsrcType;
62 if( strcmp (rTPointer->resourcetypename, rtPtr) == 0)
67 rTPointer = rTPointer->next;
69 return OC_STACK_ERROR;
72 static OCStackResult CheckIFParamSupport(const OCResource* resource, const char* ifPtr)
74 if(!resource || !ifPtr)
76 return OC_STACK_INVALID_PARAM;
79 OCResourceInterface* iFPointer = resource->rsrcInterface;
82 if( strcmp (iFPointer->name, ifPtr) == 0)
87 iFPointer = iFPointer->next;
89 return OC_STACK_ERROR;
93 ValidateQuery (const char *query, OCResourceHandle resource,
94 OCStackIfTypes *ifParam, char **rtParam)
96 uint8_t numFields = 0;
99 //TODO: Query and URL validation is being done for virtual resource case
100 // using ValidateUrlQuery function. We should be able to merge it with this
102 OC_LOG(INFO, TAG, PCF("Entering ValidateQuery"));
105 return OC_STACK_ERROR;
107 if(!ifParam || !rtParam)
109 return OC_STACK_INVALID_PARAM;
114 // Query string is empty
115 OC_LOG_V(INFO, TAG, PCF("Empty query string, use default IF and RT"));
116 *ifParam = STACK_IF_DEFAULT;
117 *rtParam = (char *) OCGetResourceTypeName (resource, 0);
121 // Break the query string to validate it and determine IF and RT parameters
122 // Validate there are atmost 2 parameters in string and that one is 'if' and other 'rt'
123 // separated by token '&' or ';'. Stack will accept both the versions.
125 char *endStr, *ifPtr = NULL, *rtPtr = NULL;
126 char *token = strtok_r ((char *)query, OC_QUERY_SEPARATOR , &endStr);
128 // External loop breaks query string into fields using the & separator
129 while (token != NULL)
133 char *innerToken = strtok_r (token, "=", &endToken);
136 // Internal loop parses the field to extract values (parameters) assigned to each field
137 while (innerToken != NULL)
140 if (strncmp (innerToken, OC_RSRVD_INTERFACE, sizeof(OC_RSRVD_INTERFACE)) == 0)
142 // Determine the value of IF parameter
143 innerToken = strtok_r (NULL, "=", &endToken);
146 else if (strcmp (innerToken, OC_RSRVD_RESOURCE_TYPE) == 0)
148 // Determine the value of RT parameter
149 innerToken = strtok_r (NULL, "=", &endToken);
154 innerToken = strtok_r (NULL, "=", &endToken);
157 if (numParam != NUM_PARAM_IN_QUERY)
159 // Query parameter should be of the form if=<string>. String should not have & or =
160 return OC_STACK_INVALID_QUERY;
162 token = strtok_r (NULL, OC_QUERY_SEPARATOR, &endStr);
164 if (numFields > NUM_FIELDS_IN_QUERY)
166 // current release supports one IF value, one RT value and no other params
167 return OC_STACK_INVALID_QUERY;
172 if(CheckIFParamSupport((OCResource *)resource, ifPtr) != OC_STACK_OK)
174 return OC_STACK_INVALID_QUERY;
176 if (strcmp (ifPtr, OC_RSRVD_INTERFACE_DEFAULT) == 0)
178 *ifParam = STACK_IF_DEFAULT;
180 else if (strcmp (ifPtr, OC_RSRVD_INTERFACE_LL) == 0)
182 *ifParam = STACK_IF_LL;
184 else if (strcmp (ifPtr, OC_RSRVD_INTERFACE_BATCH) == 0)
186 *ifParam = STACK_IF_BATCH;
188 else if(strcmp (ifPtr, OC_RSRVD_INTERFACE_GROUP) == 0)
190 *ifParam = STACK_IF_GROUP;
194 return OC_STACK_ERROR;
199 // IF not specified in query, use default IF
200 *ifParam = STACK_IF_DEFAULT;
205 if (CheckRTParamSupport((OCResource *)resource, rtPtr) == OC_STACK_OK)
211 return OC_STACK_INVALID_QUERY;
216 // RT not specified in query. Use the first resource type for the resource as default.
217 *rtParam = (char *) OCGetResourceTypeName (resource, 0);
219 OC_LOG_V(INFO, TAG, "Query params: IF = %d, RT = %s", *ifParam, *rtParam);
225 HandleLinkedListInterface(OCEntityHandlerRequest *ehRequest,
233 return OC_STACK_INVALID_PARAM;
236 OCStackResult ret = OC_STACK_OK;
237 OCResource *collResource = (OCResource *)ehRequest->resource;
239 OCRepPayload* payload = NULL;
241 if(ret == OC_STACK_OK)
243 ret = BuildResponseRepresentation(collResource, &payload);
246 if (ret == OC_STACK_OK)
248 for (int i = 0; i < MAX_CONTAINED_RESOURCES && ret == OC_STACK_OK; i++)
250 OCResource* temp = collResource->rsrcResources[i];
253 //TODO : Add resource type filtering once collections
254 // start supporting queries.
255 ret = BuildResponseRepresentation(temp, &payload);
260 if(ret == OC_STACK_OK)
262 OCEntityHandlerResponse response = {0};
263 response.ehResult = OC_EH_OK;
264 response.payload = (OCPayload*)payload;
265 response.persistentBufferFlag = 0;
266 response.requestHandle = (OCRequestHandle) ehRequest->requestHandle;
267 response.resourceHandle = (OCResourceHandle) collResource;
268 ret = OCDoResponse(&response);
270 OCRepPayloadDestroy(payload);
275 HandleBatchInterface(OCEntityHandlerRequest *ehRequest)
277 OCStackResult stackRet = OC_STACK_OK;
278 OCEntityHandlerResult ehResult = OC_EH_ERROR;
279 OCResource * collResource = (OCResource *) ehRequest->resource;
281 OCRepPayload* payload = OCRepPayloadCreate();
284 stackRet = OC_STACK_NO_MEMORY;
287 if(stackRet == OC_STACK_OK)
289 OCRepPayloadSetUri(payload, collResource->uri);
292 if(stackRet == OC_STACK_OK)
294 OCEntityHandlerResponse response = {0};
295 response.ehResult = OC_EH_OK;
296 response.payload = (OCPayload*)payload;
297 response.persistentBufferFlag = 0;
298 response.requestHandle = (OCRequestHandle) ehRequest->requestHandle;
299 response.resourceHandle = (OCResourceHandle) collResource;
300 stackRet = OCDoResponse(&response);
303 if (stackRet == OC_STACK_OK)
305 for (int i = 0; i < MAX_CONTAINED_RESOURCES; i++)
307 OCResource* temp = collResource->rsrcResources[i];
310 // Note that all entity handlers called through a collection
311 // will get the same pointer to ehRequest, the only difference
312 // is ehRequest->resource
313 ehRequest->resource = (OCResourceHandle) temp;
315 ehResult = temp->entityHandler(OC_REQUEST_FLAG, ehRequest,
316 temp->entityHandlerCallbackParam);
318 // The default collection handler is returning as OK
319 if(stackRet != OC_STACK_SLOW_RESOURCE)
321 stackRet = OC_STACK_OK;
323 // if a single resource is slow, then entire response will be treated
325 if(ehResult == OC_EH_SLOW)
327 OC_LOG(INFO, TAG, PCF("This is a slow resource"));
328 ((OCServerRequest *)ehRequest->requestHandle)->slowFlag = 1;
329 stackRet = EntityHandlerCodeToOCStackCode(ehResult);
337 ehRequest->resource = (OCResourceHandle) collResource;
342 uint8_t GetNumOfResourcesInCollection (OCResource *resource)
347 for (int i = 0; i < MAX_CONTAINED_RESOURCES; i++)
349 if (resource->rsrcResources[i])
363 OCStackResult DefaultCollectionEntityHandler (OCEntityHandlerFlag flag,
364 OCEntityHandlerRequest *ehRequest)
366 if(!ehRequest || !ehRequest->query)
368 return OC_STACK_INVALID_PARAM;
371 OCStackResult result = OC_STACK_ERROR;
372 OCStackIfTypes ifQueryParam = STACK_IF_INVALID;
373 char *rtQueryParam = NULL;
375 OC_LOG_V(INFO, TAG, "DefaultCollectionEntityHandler with query %s", ehRequest->query);
377 if (flag != OC_REQUEST_FLAG)
379 return OC_STACK_ERROR;
382 result = ValidateQuery (ehRequest->query,
383 ehRequest->resource, &ifQueryParam, &rtQueryParam);
385 if (result != OC_STACK_OK)
390 if(!((ehRequest->method == OC_REST_GET) ||
391 (ehRequest->method == OC_REST_PUT) ||
392 (ehRequest->method == OC_REST_POST)))
394 return OC_STACK_ERROR;
397 if (ehRequest->method == OC_REST_GET)
399 switch (ifQueryParam)
401 case STACK_IF_DEFAULT:
402 // Get attributes of collection resource and properties of contined resource
403 // M1 release does not support attributes for collection resource, so the GET
404 // operation is same as the GET on LL interface.
405 OC_LOG(INFO, TAG, PCF("STACK_IF_DEFAULT"));
406 return HandleLinkedListInterface(ehRequest, STACK_RES_DISCOVERY_NOFILTER, NULL);
409 OC_LOG(INFO, TAG, PCF("STACK_IF_LL"));
410 return HandleLinkedListInterface(ehRequest, STACK_RES_DISCOVERY_NOFILTER, NULL);
413 OC_LOG(INFO, TAG, PCF("STACK_IF_BATCH"));
414 ((OCServerRequest *)ehRequest->requestHandle)->ehResponseHandler =
415 HandleAggregateResponse;
417 ((OCServerRequest *)ehRequest->requestHandle)->numResponses =
418 GetNumOfResourcesInCollection((OCResource *)ehRequest->resource) + 1;
420 return HandleBatchInterface(ehRequest);
423 return BuildCollectionGroupActionJSONResponse(OC_REST_GET/*flag*/,
424 (OCResource *) ehRequest->resource, ehRequest);
426 return OC_STACK_ERROR;
429 else if (ehRequest->method == OC_REST_PUT)
431 switch (ifQueryParam)
433 case STACK_IF_DEFAULT:
434 // M1 release does not support PUT on default interface
435 return OC_STACK_ERROR;
438 // LL interface only supports GET
439 return OC_STACK_ERROR;
442 ((OCServerRequest *)ehRequest->requestHandle)->ehResponseHandler =
443 HandleAggregateResponse;
444 ((OCServerRequest *)ehRequest->requestHandle)->numResponses =
445 GetNumOfResourcesInCollection((OCResource *)ehRequest->resource) + 1;
446 return HandleBatchInterface(ehRequest);
450 OC_LOG(INFO, TAG, PCF("IF_COLLECTION PUT with request ::\n"));
451 OC_LOG_PAYLOAD(INFO, TAG, ehRequest->payload);
452 return BuildCollectionGroupActionJSONResponse(OC_REST_PUT/*flag*/,
453 (OCResource *) ehRequest->resource, ehRequest);
456 return OC_STACK_ERROR;
459 else if (ehRequest->method == OC_REST_POST)
462 switch (ifQueryParam)
466 OC_LOG(INFO, TAG, PCF("IF_COLLECTION POST with request ::\n"));
467 OC_LOG_PAYLOAD(INFO, TAG, ehRequest->payload);
468 return BuildCollectionGroupActionJSONResponse(OC_REST_POST/*flag*/,
469 (OCResource *) ehRequest->resource, ehRequest);
472 return OC_STACK_ERROR;
475 else if (ehRequest->method == OC_REST_POST)
478 if(ifQueryParam == STACK_IF_GROUP)
480 OC_LOG(INFO, TAG, PCF("IF_COLLECTION POST with request ::\n"));
481 OC_LOG_PAYLOAD(INFO, TAG, ehRequest->payload);
482 return BuildCollectionGroupActionJSONResponse(OC_REST_POST/*flag*/,
483 (OCResource *) ehRequest->resource, ehRequest);
487 return OC_STACK_ERROR;