source: azure_iot_hub/trunk/azure_iothub/c-utility/src/httpapiex.c@ 389

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1// Copyright (c) Microsoft. All rights reserved.
2// Licensed under the MIT license. See LICENSE file in the project root for full license information.
3
4#include <stdlib.h>
5#include "azure_c_shared_utility/gballoc.h"
6#include "azure_c_shared_utility/httpapiex.h"
7#include "azure_c_shared_utility/optimize_size.h"
8#include "azure_c_shared_utility/xlogging.h"
9#include "azure_c_shared_utility/strings.h"
10#include "azure_c_shared_utility/crt_abstractions.h"
11#include "azure_c_shared_utility/vector.h"
12
13typedef struct HTTPAPIEX_SAVED_OPTION_TAG
14{
15 const char* optionName;
16 const void* value;
17}HTTPAPIEX_SAVED_OPTION;
18
19typedef struct HTTPAPIEX_HANDLE_DATA_TAG
20{
21 STRING_HANDLE hostName;
22 int k;
23 HTTP_HANDLE httpHandle;
24 VECTOR_HANDLE savedOptions;
25}HTTPAPIEX_HANDLE_DATA;
26
27MU_DEFINE_ENUM_STRINGS(HTTPAPIEX_RESULT, HTTPAPIEX_RESULT_VALUES);
28
29#define LOG_HTTAPIEX_ERROR() LogError("error code = %s", MU_ENUM_TO_STRING(HTTPAPIEX_RESULT, result))
30
31HTTPAPIEX_HANDLE HTTPAPIEX_Create(const char* hostName)
32{
33 HTTPAPIEX_HANDLE result;
34 /*Codes_SRS_HTTPAPIEX_02_001: [If parameter hostName is NULL then HTTPAPIEX_Create shall return NULL.]*/
35 if (hostName == NULL)
36 {
37 LogError("invalid (NULL) parameter");
38 result = NULL;
39 }
40 else
41 {
42 /*Codes_SRS_HTTPAPIEX_02_005: [If creating the handle fails for any reason, then HTTAPIEX_Create shall return NULL.] */
43 HTTPAPIEX_HANDLE_DATA* handleData = (HTTPAPIEX_HANDLE_DATA*)malloc(sizeof(HTTPAPIEX_HANDLE_DATA));
44 if (handleData == NULL)
45 {
46 LogError("malloc failed.");
47 result = NULL;
48 }
49 else
50 {
51 /*Codes_SRS_HTTPAPIEX_02_002: [Parameter hostName shall be saved.]*/
52 handleData->hostName = STRING_construct(hostName);
53 if (handleData->hostName == NULL)
54 {
55 free(handleData);
56 LogError("unable to STRING_construct");
57 result = NULL;
58 }
59 else
60 {
61 /*Codes_SRS_HTTPAPIEX_02_004: [Otherwise, HTTPAPIEX_Create shall return a HTTAPIEX_HANDLE suitable for further calls to the module.] */
62 handleData->savedOptions = VECTOR_create(sizeof(HTTPAPIEX_SAVED_OPTION));
63 if (handleData->savedOptions == NULL)
64 {
65 STRING_delete(handleData->hostName);
66 free(handleData);
67 result = NULL;
68 }
69 else
70 {
71 handleData->k = -1;
72 handleData->httpHandle = NULL;
73 result = handleData;
74 }
75 }
76 }
77 }
78 return result;
79}
80
81/*this function builds the default request http headers if none are specified*/
82/*returns 0 if no error*/
83/*any other code is error*/
84static int buildRequestHttpHeadersHandle(HTTPAPIEX_HANDLE_DATA *handleData, BUFFER_HANDLE requestContent, HTTP_HEADERS_HANDLE originalRequestHttpHeadersHandle, bool* isOriginalRequestHttpHeadersHandle, HTTP_HEADERS_HANDLE* toBeUsedRequestHttpHeadersHandle)
85{
86 int result;
87
88
89 if (originalRequestHttpHeadersHandle != NULL)
90 {
91 *toBeUsedRequestHttpHeadersHandle = originalRequestHttpHeadersHandle;
92 *isOriginalRequestHttpHeadersHandle = true;
93
94 }
95 else
96 {
97 /*Codes_SRS_HTTPAPIEX_02_009: [If parameter requestHttpHeadersHandle is NULL then HTTPAPIEX_ExecuteRequest shall allocate a temporary internal instance of HTTPHEADERS, shall add to that instance the following headers
98 Host:{hostname} - as it was indicated by the call to HTTPAPIEX_Create API call
99 Content-Length:the size of the requestContent parameter, and use this instance to all the subsequent calls to HTTPAPI_ExecuteRequest as parameter httpHeadersHandle.]
100 */
101 *isOriginalRequestHttpHeadersHandle = false;
102 *toBeUsedRequestHttpHeadersHandle = HTTPHeaders_Alloc();
103 }
104
105 if (*toBeUsedRequestHttpHeadersHandle == NULL)
106 {
107 result = MU_FAILURE;
108 LogError("unable to HTTPHeaders_Alloc");
109 }
110 else
111 {
112 char temp[22] = { 0 };
113 (void)size_tToString(temp, 22, BUFFER_length(requestContent)); /*cannot fail, MAX_uint64 has 19 digits*/
114 /*Codes_SRS_HTTPAPIEX_02_011: [If parameter requestHttpHeadersHandle is not NULL then HTTPAPIEX_ExecuteRequest shall create or update the following headers of the request:
115 Host:{hostname}
116 Content-Length:the size of the requestContent parameter, and shall use the so constructed HTTPHEADERS object to all calls to HTTPAPI_ExecuteRequest as parameter httpHeadersHandle.]
117 */
118 /*Codes_SRS_HTTPAPIEX_02_009: [If parameter requestHttpHeadersHandle is NULL then HTTPAPIEX_ExecuteRequest shall allocate a temporary internal instance of HTTPHEADERS, shall add to that instance the following headers
119 Host:{hostname} - as it was indicated by the call to HTTPAPIEX_Create API call
120 Content-Length:the size of the requestContent parameter, and use this instance to all the subsequent calls to HTTPAPI_ExecuteRequest as parameter httpHeadersHandle.]
121 */
122 if (!(
123 (HTTPHeaders_ReplaceHeaderNameValuePair(*toBeUsedRequestHttpHeadersHandle, "Host", STRING_c_str(handleData->hostName)) == HTTP_HEADERS_OK) &&
124 (HTTPHeaders_ReplaceHeaderNameValuePair(*toBeUsedRequestHttpHeadersHandle, "Content-Length", temp) == HTTP_HEADERS_OK)
125 ))
126 {
127 if (! *isOriginalRequestHttpHeadersHandle)
128 {
129 HTTPHeaders_Free(*toBeUsedRequestHttpHeadersHandle);
130 }
131 *toBeUsedRequestHttpHeadersHandle = NULL;
132 result = MU_FAILURE;
133 }
134 else
135 {
136 result = 0;
137 }
138 }
139 return result;
140}
141
142static int buildResponseHttpHeadersHandle(HTTP_HEADERS_HANDLE originalResponsetHttpHeadersHandle, bool* isOriginalResponseHttpHeadersHandle, HTTP_HEADERS_HANDLE* toBeUsedResponsetHttpHeadersHandle)
143{
144 int result;
145 if (originalResponsetHttpHeadersHandle == NULL)
146 {
147 if ((*toBeUsedResponsetHttpHeadersHandle = HTTPHeaders_Alloc()) == NULL)
148 {
149 result = MU_FAILURE;
150 }
151 else
152 {
153 *isOriginalResponseHttpHeadersHandle = false;
154 result = 0;
155 }
156 }
157 else
158 {
159 *isOriginalResponseHttpHeadersHandle = true;
160 *toBeUsedResponsetHttpHeadersHandle = originalResponsetHttpHeadersHandle;
161 result = 0;
162 }
163 return result;
164}
165
166
167static int buildBufferIfNotExist(BUFFER_HANDLE originalRequestContent, bool* isOriginalRequestContent, BUFFER_HANDLE* toBeUsedRequestContent)
168{
169 int result;
170 if (originalRequestContent == NULL)
171 {
172 *toBeUsedRequestContent = BUFFER_new();
173 if (*toBeUsedRequestContent == NULL)
174 {
175 result = MU_FAILURE;
176 }
177 else
178 {
179 *isOriginalRequestContent = false;
180 result = 0;
181 }
182 }
183 else
184 {
185 *isOriginalRequestContent = true;
186 *toBeUsedRequestContent = originalRequestContent;
187 result = 0;
188 }
189 return result;
190}
191
192static unsigned int dummyStatusCode;
193
194static int buildAllRequests(HTTPAPIEX_HANDLE_DATA* handle, HTTPAPI_REQUEST_TYPE requestType, const char* relativePath,
195 HTTP_HEADERS_HANDLE requestHttpHeadersHandle, BUFFER_HANDLE requestContent, unsigned int* statusCode,
196 HTTP_HEADERS_HANDLE responseHttpHeadersHandle, BUFFER_HANDLE responseContent,
197
198 const char** toBeUsedRelativePath,
199 HTTP_HEADERS_HANDLE *toBeUsedRequestHttpHeadersHandle, bool *isOriginalRequestHttpHeadersHandle,
200 BUFFER_HANDLE *toBeUsedRequestContent, bool *isOriginalRequestContent,
201 unsigned int** toBeUsedStatusCode,
202 HTTP_HEADERS_HANDLE *toBeUsedResponseHttpHeadersHandle, bool *isOriginalResponseHttpHeadersHandle,
203 BUFFER_HANDLE *toBeUsedResponseContent, bool *isOriginalResponseContent)
204{
205 int result;
206 (void)requestType;
207 /*Codes_SRS_HTTPAPIEX_02_013: [If requestContent is NULL then HTTPAPIEX_ExecuteRequest shall behave as if a buffer of zero size would have been used, that is, it shall call HTTPAPI_ExecuteRequest with parameter content = NULL and contentLength = 0.]*/
208 /*Codes_SRS_HTTPAPIEX_02_014: [If requestContent is not NULL then its content and its size shall be used for parameters content and contentLength of HTTPAPI_ExecuteRequest.] */
209 if (buildBufferIfNotExist(requestContent, isOriginalRequestContent, toBeUsedRequestContent) != 0)
210 {
211 LogError("unable to build the request content");
212 result = MU_FAILURE;
213 }
214 else
215 {
216 if (buildRequestHttpHeadersHandle(handle, *toBeUsedRequestContent, requestHttpHeadersHandle, isOriginalRequestHttpHeadersHandle, toBeUsedRequestHttpHeadersHandle) != 0)
217 {
218 /*Codes_SRS_HTTPAPIEX_02_010: [If any of the operations in SRS_HTTAPIEX_02_009 fails, then HTTPAPIEX_ExecuteRequest shall return HTTPAPIEX_ERROR.] */
219 if (*isOriginalRequestContent == false)
220 {
221 BUFFER_delete(*toBeUsedRequestContent);
222 }
223 LogError("unable to build the request http headers handle");
224 result = MU_FAILURE;
225 }
226 else
227 {
228 /*Codes_SRS_HTTPAPIEX_02_008: [If parameter relativePath is NULL then HTTPAPIEX_INVALID_ARG shall not assume a relative path - that is, it will assume an empty path ("").] */
229 if (relativePath == NULL)
230 {
231 *toBeUsedRelativePath = "";
232 }
233 else
234 {
235 *toBeUsedRelativePath = relativePath;
236 }
237
238 /*Codes_SRS_HTTPAPIEX_02_015: [If statusCode is NULL then HTTPAPIEX_ExecuteRequest shall not write in statusCode the HTTP status code, and it will use a temporary internal int for parameter statusCode to the calls of HTTPAPI_ExecuteRequest.] */
239 if (statusCode == NULL)
240 {
241 /*Codes_SRS_HTTPAPIEX_02_016: [If statusCode is not NULL then If statusCode is NULL then HTTPAPIEX_ExecuteRequest shall use it for parameter statusCode to the calls of HTTPAPI_ExecuteRequest.] */
242 *toBeUsedStatusCode = &dummyStatusCode;
243 }
244 else
245 {
246 *toBeUsedStatusCode = statusCode;
247 }
248
249 /*Codes_SRS_HTTPAPIEX_02_017: [If responseHeaders handle is NULL then HTTPAPIEX_ExecuteRequest shall create a temporary internal instance of HTTPHEADERS object and use that for responseHeaders parameter of HTTPAPI_ExecuteRequest call.] */
250 /*Codes_SRS_HTTPAPIEX_02_019: [If responseHeaders is not NULL, then then HTTPAPIEX_ExecuteRequest shall use that object as parameter responseHeaders of HTTPAPI_ExecuteRequest call.] */
251 if (buildResponseHttpHeadersHandle(responseHttpHeadersHandle, isOriginalResponseHttpHeadersHandle, toBeUsedResponseHttpHeadersHandle) != 0)
252 {
253 /*Codes_SRS_HTTPAPIEX_02_018: [If creating the temporary http headers in SRS_HTTPAPIEX_02_017 fails then HTTPAPIEX_ExecuteRequest shall return HTTPAPIEX_ERROR.] */
254 if (*isOriginalRequestContent == false)
255 {
256 BUFFER_delete(*toBeUsedRequestContent);
257 }
258 if (*isOriginalRequestHttpHeadersHandle == false)
259 {
260 HTTPHeaders_Free(*toBeUsedRequestHttpHeadersHandle);
261 }
262 LogError("unable to build response content");
263 result = MU_FAILURE;
264 }
265 else
266 {
267 /*Codes_SRS_HTTPAPIEX_02_020: [If responseContent is NULL then HTTPAPIEX_ExecuteRequest shall create a temporary internal BUFFER object and use that as parameter responseContent of HTTPAPI_ExecuteRequest call.] */
268 /*Codes_SRS_HTTPAPIEX_02_022: [If responseContent is not NULL then HTTPAPIEX_ExecuteRequest use that as parameter responseContent of HTTPAPI_ExecuteRequest call.] */
269 if (buildBufferIfNotExist(responseContent, isOriginalResponseContent, toBeUsedResponseContent) != 0)
270 {
271 /*Codes_SRS_HTTPAPIEX_02_021: [If creating the BUFFER_HANDLE in SRS_HTTPAPIEX_02_020 fails, then HTTPAPIEX_ExecuteRequest shall return HTTPAPIEX_ERROR.] */
272 if (*isOriginalRequestContent == false)
273 {
274 BUFFER_delete(*toBeUsedRequestContent);
275 }
276 if (*isOriginalRequestHttpHeadersHandle == false)
277 {
278 HTTPHeaders_Free(*toBeUsedRequestHttpHeadersHandle);
279 }
280 if (*isOriginalResponseHttpHeadersHandle == false)
281 {
282 HTTPHeaders_Free(*toBeUsedResponseHttpHeadersHandle);
283 }
284 LogError("unable to build response content");
285 result = MU_FAILURE;
286 }
287 else
288 {
289 result = 0;
290 }
291 }
292 }
293 }
294 return result;
295}
296
297HTTPAPIEX_RESULT HTTPAPIEX_ExecuteRequest(HTTPAPIEX_HANDLE handle, HTTPAPI_REQUEST_TYPE requestType, const char* relativePath,
298 HTTP_HEADERS_HANDLE requestHttpHeadersHandle, BUFFER_HANDLE requestContent, unsigned int* statusCode,
299 HTTP_HEADERS_HANDLE responseHttpHeadersHandle, BUFFER_HANDLE responseContent)
300{
301 HTTPAPIEX_RESULT result;
302 /*Codes_SRS_HTTPAPIEX_02_006: [If parameter handle is NULL then HTTPAPIEX_ExecuteRequest shall fail and return HTTPAPIEX_INVALID_ARG.]*/
303 if (handle == NULL)
304 {
305 result = HTTPAPIEX_INVALID_ARG;
306 LOG_HTTAPIEX_ERROR();
307 }
308 else
309 {
310 /*Codes_SRS_HTTPAPIEX_02_007: [If parameter requestType does not indicate a valid request, HTTPAPIEX_ExecuteRequest shall fail and return HTTPAPIEX_INVALID_ARG.] */
311 if (requestType >= MU_COUNT_ARG(HTTPAPI_REQUEST_TYPE_VALUES))
312 {
313 result = HTTPAPIEX_INVALID_ARG;
314 LOG_HTTAPIEX_ERROR();
315 }
316 else
317 {
318 HTTPAPIEX_HANDLE_DATA *handleData = (HTTPAPIEX_HANDLE_DATA *)handle;
319
320 /*call to buildAll*/
321 const char* toBeUsedRelativePath;
322 HTTP_HEADERS_HANDLE toBeUsedRequestHttpHeadersHandle; bool isOriginalRequestHttpHeadersHandle;
323 BUFFER_HANDLE toBeUsedRequestContent; bool isOriginalRequestContent;
324 unsigned int* toBeUsedStatusCode;
325 HTTP_HEADERS_HANDLE toBeUsedResponseHttpHeadersHandle; bool isOriginalResponseHttpHeadersHandle;
326 BUFFER_HANDLE toBeUsedResponseContent; bool isOriginalResponseContent;
327
328 if (buildAllRequests(handleData, requestType, relativePath, requestHttpHeadersHandle, requestContent, statusCode, responseHttpHeadersHandle, responseContent,
329 &toBeUsedRelativePath,
330 &toBeUsedRequestHttpHeadersHandle, &isOriginalRequestHttpHeadersHandle,
331 &toBeUsedRequestContent, &isOriginalRequestContent,
332 &toBeUsedStatusCode,
333 &toBeUsedResponseHttpHeadersHandle, &isOriginalResponseHttpHeadersHandle,
334 &toBeUsedResponseContent, &isOriginalResponseContent) != 0)
335 {
336 result = HTTPAPIEX_ERROR;
337 LOG_HTTAPIEX_ERROR();
338 }
339 else
340 {
341
342 /*Codes_SRS_HTTPAPIEX_02_023: [HTTPAPIEX_ExecuteRequest shall try to execute the HTTP call by ensuring the following API call sequence is respected:]*/
343 /*Codes_SRS_HTTPAPIEX_02_024: [If any point in the sequence fails, HTTPAPIEX_ExecuteRequest shall attempt to recover by going back to the previous step and retrying that step.]*/
344 /*Codes_SRS_HTTPAPIEX_02_025: [If the first step fails, then the sequence fails.]*/
345 /*Codes_SRS_HTTPAPIEX_02_026: [A step shall be retried at most once.]*/
346 /*Codes_SRS_HTTPAPIEX_02_027: [If a step has been retried then all subsequent steps shall be retried too.]*/
347 bool st[3] = { false, false, false }; /*the three levels of possible failure in resilient send: HTTAPI_Init, HTTPAPI_CreateConnection, HTTPAPI_ExecuteRequest*/
348 if (handleData->k == -1)
349 {
350 handleData->k = 0;
351 }
352
353 do
354 {
355 bool goOn;
356
357 if (handleData->k > 2)
358 {
359 /* error */
360 break;
361 }
362
363 if (st[handleData->k] == true) /*already been tried*/
364 {
365 goOn = false;
366 }
367 else
368 {
369 switch (handleData->k)
370 {
371 case 0:
372 {
373 if (HTTPAPI_Init() != HTTPAPI_OK)
374 {
375 goOn = false;
376 }
377 else
378 {
379 goOn = true;
380 }
381 break;
382 }
383 case 1:
384 {
385 if ((handleData->httpHandle = HTTPAPI_CreateConnection(STRING_c_str(handleData->hostName))) == NULL)
386 {
387 goOn = false;
388 }
389 else
390 {
391 size_t i;
392 size_t vectorSize = VECTOR_size(handleData->savedOptions);
393 for (i = 0; i < vectorSize; i++)
394 {
395 /*Codes_SRS_HTTPAPIEX_02_035: [HTTPAPIEX_ExecuteRequest shall pass all the saved options (see HTTPAPIEX_SetOption) to the newly create HTTPAPI_HANDLE in step 2 by calling HTTPAPI_SetOption.]*/
396 /*Codes_SRS_HTTPAPIEX_02_036: [If setting the option fails, then the failure shall be ignored.] */
397 HTTPAPIEX_SAVED_OPTION* option = (HTTPAPIEX_SAVED_OPTION*)VECTOR_element(handleData->savedOptions, i);
398 if (HTTPAPI_SetOption(handleData->httpHandle, option->optionName, option->value) != HTTPAPI_OK)
399 {
400 LogError("HTTPAPI_SetOption failed when called for option %s", option->optionName);
401 }
402 }
403 goOn = true;
404 }
405 break;
406 }
407 case 2:
408 {
409 size_t length = BUFFER_length(toBeUsedRequestContent);
410 unsigned char* buffer = BUFFER_u_char(toBeUsedRequestContent);
411 if (HTTPAPI_ExecuteRequest(handleData->httpHandle, requestType, toBeUsedRelativePath, toBeUsedRequestHttpHeadersHandle, buffer, length, toBeUsedStatusCode, toBeUsedResponseHttpHeadersHandle, toBeUsedResponseContent) != HTTPAPI_OK)
412 {
413 goOn = false;
414 }
415 else
416 {
417 goOn = true;
418 }
419 break;
420 }
421 default:
422 {
423 /*serious error*/
424 goOn = false;
425 break;
426 }
427 }
428 }
429
430 if (goOn)
431 {
432 if (handleData->k == 2)
433 {
434 /*Codes_SRS_HTTPAPIEX_02_028: [HTTPAPIEX_ExecuteRequest shall return HTTPAPIEX_OK when a call to HTTPAPI_ExecuteRequest has been completed successfully.]*/
435 result = HTTPAPIEX_OK;
436 goto out;
437 }
438 else
439 {
440 st[handleData->k] = true;
441 handleData->k++;
442 st[handleData->k] = false;
443 }
444 }
445 else
446 {
447 st[handleData->k] = false;
448 handleData->k--;
449 switch (handleData->k)
450 {
451 case 0:
452 {
453 HTTPAPI_Deinit();
454 break;
455 }
456 case 1:
457 {
458 HTTPAPI_CloseConnection(handleData->httpHandle);
459 handleData->httpHandle = NULL;
460 break;
461 }
462 case 2:
463 {
464 break;
465 }
466 default:
467 {
468 break;
469 }
470 }
471 }
472 } while (handleData->k >= 0);
473 /*Codes_SRS_HTTPAPIEX_02_029: [Otherwise, HTTAPIEX_ExecuteRequest shall return HTTPAPIEX_RECOVERYFAILED.] */
474 result = HTTPAPIEX_RECOVERYFAILED;
475 LogError("unable to recover sending to a working state");
476 out:;
477 /*in all cases, unbuild the temporaries*/
478 if (isOriginalRequestContent == false)
479 {
480 BUFFER_delete(toBeUsedRequestContent);
481 }
482 if (isOriginalRequestHttpHeadersHandle == false)
483 {
484 HTTPHeaders_Free(toBeUsedRequestHttpHeadersHandle);
485 }
486 if (isOriginalResponseContent == false)
487 {
488 BUFFER_delete(toBeUsedResponseContent);
489 }
490 if (isOriginalResponseHttpHeadersHandle == false)
491 {
492 HTTPHeaders_Free(toBeUsedResponseHttpHeadersHandle);
493 }
494 }
495 }
496 }
497 return result;
498}
499
500
501void HTTPAPIEX_Destroy(HTTPAPIEX_HANDLE handle)
502{
503 if (handle != NULL)
504 {
505 /*Codes_SRS_HTTPAPIEX_02_042: [HTTPAPIEX_Destroy shall free all the resources used by HTTAPIEX_HANDLE.]*/
506 size_t i;
507 size_t vectorSize;
508 HTTPAPIEX_HANDLE_DATA* handleData = (HTTPAPIEX_HANDLE_DATA*)handle;
509
510 if (handleData->k == 2)
511 {
512 HTTPAPI_CloseConnection(handleData->httpHandle);
513 HTTPAPI_Deinit();
514 }
515 STRING_delete(handleData->hostName);
516
517 vectorSize = VECTOR_size(handleData->savedOptions);
518 for (i = 0; i < vectorSize; i++)
519 {
520 HTTPAPIEX_SAVED_OPTION* savedOption = (HTTPAPIEX_SAVED_OPTION*)VECTOR_element(handleData->savedOptions, i);
521 free((void*)savedOption->optionName);
522 free((void*)savedOption->value);
523 }
524 VECTOR_destroy(handleData->savedOptions);
525
526 free(handle);
527 }
528 else
529 {
530 /*Codes_SRS_HTTPAPIEX_02_043: [If parameter handle is NULL then HTTPAPIEX_Destroy shall take no action.] */
531 }
532}
533
534static bool sameName(const void* element, const void* value)
535{
536 return (strcmp(((HTTPAPIEX_SAVED_OPTION*)element)->optionName, (const char*)value) == 0) ? true : false;
537}
538
539/*return 0 on success, any other value is error*/
540/*obs: value is already cloned at the time of calling this function */
541static int createOrUpdateOption(HTTPAPIEX_HANDLE_DATA* handleData, const char* optionName, const void* value)
542{
543 /*this function is called after the option value has been saved (cloned)*/
544 int result;
545
546 /*decide bwtween update or create*/
547 HTTPAPIEX_SAVED_OPTION* whereIsIt = (HTTPAPIEX_SAVED_OPTION*)VECTOR_find_if(handleData->savedOptions, sameName, optionName);
548 if (whereIsIt != NULL)
549 {
550 free((void*)(whereIsIt->value));
551 whereIsIt->value = value;
552 result = 0;
553 }
554 else
555 {
556 HTTPAPIEX_SAVED_OPTION newOption;
557 if (mallocAndStrcpy_s((char**)&(newOption.optionName), optionName) != 0)
558 {
559 free((void*)value);
560 result = MU_FAILURE;
561 }
562 else
563 {
564 newOption.value = value;
565 if (VECTOR_push_back(handleData->savedOptions, &newOption, 1) != 0)
566 {
567 LogError("unable to VECTOR_push_back");
568 free((void*)newOption.optionName);
569 free((void*)value);
570 result = MU_FAILURE;
571 }
572 else
573 {
574 result = 0;
575 }
576 }
577 }
578
579 return result;
580}
581
582HTTPAPIEX_RESULT HTTPAPIEX_SetOption(HTTPAPIEX_HANDLE handle, const char* optionName, const void* value)
583{
584 HTTPAPIEX_RESULT result;
585 /*Codes_SRS_HTTPAPIEX_02_032: [If parameter handle is NULL then HTTPAPIEX_SetOption shall return HTTPAPIEX_INVALID_ARG.] */
586 /*Codes_SRS_HTTPAPIEX_02_033: [If parameter optionName is NULL then HTTPAPIEX_SetOption shall return HTTPAPIEX_INVALID_ARG.] */
587 /*Codes_SRS_HTTPAPIEX_02_034: [If parameter value is NULL then HTTPAPIEX_SetOption shall return HTTPAPIEX_INVALID_ARG.] */
588 if (
589 (handle == NULL) ||
590 (optionName == NULL) ||
591 (value == NULL)
592 )
593 {
594 result = HTTPAPIEX_INVALID_ARG;
595 LOG_HTTAPIEX_ERROR();
596 }
597 else
598 {
599 const void* savedOption;
600 HTTPAPI_RESULT saveOptionResult;
601
602 /*Codes_SRS_HTTPAPIEX_02_037: [HTTPAPIEX_SetOption shall attempt to save the value of the option by calling HTTPAPI_CloneOption passing optionName and value, irrespective of the existence of a HTTPAPI_HANDLE] */
603 saveOptionResult = HTTPAPI_CloneOption(optionName, value, &savedOption);
604
605 if(saveOptionResult == HTTPAPI_INVALID_ARG)
606 {
607 /*Codes_SRS_HTTPAPIEX_02_038: [If HTTPAPI_CloneOption returns HTTPAPI_INVALID_ARG then HTTPAPIEX shall return HTTPAPIEX_INVALID_ARG.] */
608 result = HTTPAPIEX_INVALID_ARG;
609 LOG_HTTAPIEX_ERROR();
610 }
611 else if (saveOptionResult != HTTPAPI_OK)
612 {
613 /*Codes_SRS_HTTPAPIEX_02_040: [For all other return values of HTTPAPI_SetOption, HTTPIAPIEX_SetOption shall return HTTPAPIEX_ERROR.] */
614 result = HTTPAPIEX_ERROR;
615 LOG_HTTAPIEX_ERROR();
616 }
617 else
618 {
619 HTTPAPIEX_HANDLE_DATA* handleData = (HTTPAPIEX_HANDLE_DATA*)handle;
620 /*Codes_SRS_HTTPAPIEX_02_039: [If HTTPAPI_CloneOption returns HTTPAPI_OK then HTTPAPIEX_SetOption shall create or update the pair optionName/value.]*/
621 if (createOrUpdateOption(handleData, optionName, savedOption) != 0)
622 {
623 /*Codes_SRS_HTTPAPIEX_02_041: [If creating or updating the pair optionName/value fails then shall return HTTPAPIEX_ERROR.] */
624 result = HTTPAPIEX_ERROR;
625 LOG_HTTAPIEX_ERROR();
626
627 }
628 else
629 {
630 /*Codes_SRS_HTTPAPIEX_02_031: [If HTTPAPI_HANDLE exists then HTTPAPIEX_SetOption shall call HTTPAPI_SetOption passing the same optionName and value and shall return a value conforming to the below table:] */
631 if (handleData->httpHandle != NULL)
632 {
633 HTTPAPI_RESULT HTTPAPI_result = HTTPAPI_SetOption(handleData->httpHandle, optionName, value);
634 if (HTTPAPI_result == HTTPAPI_OK)
635 {
636 result = HTTPAPIEX_OK;
637 }
638 else if (HTTPAPI_result == HTTPAPI_INVALID_ARG)
639 {
640 result = HTTPAPIEX_INVALID_ARG;
641 LOG_HTTAPIEX_ERROR();
642 }
643 else
644 {
645 result = HTTPAPIEX_ERROR;
646 LOG_HTTAPIEX_ERROR();
647 }
648 }
649 else
650 {
651 result = HTTPAPIEX_OK;
652 }
653 }
654 }
655 }
656 return result;
657}
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