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1 | /** @file\r |
2 | \r | |
3 | Implementation of help functions to parse HTTP message header.\r | |
4 | \r | |
5 | Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r | |
6 | This program and the accompanying materials\r | |
7 | are licensed and made available under the terms and conditions of the BSD License\r | |
8 | which accompanies this distribution. The full text of the license may be found at\r | |
9 | http://opensource.org/licenses/bsd-license.php\r | |
10 | \r | |
11 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
12 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
13 | \r | |
14 | **/\r | |
15 | \r | |
16 | #include "HttpDriver.h"\r | |
17 | \r | |
18 | /**\r | |
19 | Get the next string, which is distinguished by specified seperator. \r | |
20 | \r | |
21 | @param[in] String Pointer to the string.\r | |
22 | @param[in] Seperator Specified seperator used to distinguish where is the beginning \r | |
23 | of next string.\r | |
24 | \r | |
25 | @return Pointer to the next string.\r | |
26 | @return NULL if not find or String is NULL.\r | |
27 | \r | |
28 | **/\r | |
29 | CHAR8 *\r | |
30 | AsciiStrGetNextToken (\r | |
31 | IN CONST CHAR8 *String,\r | |
32 | IN CHAR8 Seperator\r | |
33 | )\r | |
34 | {\r | |
35 | CONST CHAR8 *Token;\r | |
36 | \r | |
37 | Token = String;\r | |
38 | while (TRUE) {\r | |
39 | if (*Token == 0) {\r | |
40 | return NULL;\r | |
41 | }\r | |
42 | if (*Token == Seperator) {\r | |
43 | return (CHAR8 *) (Token + 1);\r | |
44 | }\r | |
45 | Token++;\r | |
46 | }\r | |
47 | }\r | |
48 | \r | |
49 | /**\r | |
50 | Free existing HeaderFields.\r | |
51 | \r | |
52 | @param[in] HeaderFields Pointer to array of key/value header pairs waitting for free.\r | |
53 | @param[in] FieldCount The number of header pairs in HeaderFields.\r | |
54 | \r | |
55 | **/\r | |
56 | VOID\r | |
57 | FreeHeaderFields (\r | |
58 | IN EFI_HTTP_HEADER *HeaderFields,\r | |
59 | IN UINTN FieldCount\r | |
60 | )\r | |
61 | {\r | |
62 | UINTN Index;\r | |
63 | \r | |
64 | if (HeaderFields != NULL) {\r | |
65 | for (Index = 0; Index < FieldCount; Index++) {\r | |
66 | if(HeaderFields[Index].FieldName != NULL) {\r | |
67 | FreePool (HeaderFields[Index].FieldName);\r | |
68 | }\r | |
69 | if(HeaderFields[Index].FieldValue != NULL) {\r | |
70 | FreePool (HeaderFields[Index].FieldValue);\r | |
71 | }\r | |
72 | }\r | |
73 | \r | |
74 | FreePool (HeaderFields);\r | |
75 | }\r | |
76 | }\r | |
77 | \r | |
78 | /**\r | |
79 | Find required header field in HeaderFields.\r | |
80 | \r | |
81 | @param[in] HeaderFields Pointer to array of key/value header pairs.\r | |
82 | @param[in] FieldCount The number of header pairs.\r | |
83 | @param[in] FieldName Pointer to header field's name.\r | |
84 | \r | |
85 | @return Pointer to the queried header field.\r | |
86 | @return NULL if not find this required header field.\r | |
87 | \r | |
88 | **/\r | |
89 | EFI_HTTP_HEADER *\r | |
90 | FindHttpHeader (\r | |
91 | IN EFI_HTTP_HEADER *HeaderFields,\r | |
92 | IN UINTN FieldCount,\r | |
93 | IN CHAR8 *FieldName\r | |
94 | )\r | |
95 | {\r | |
96 | UINTN Index;\r | |
97 | \r | |
98 | for (Index = 0; Index < FieldCount; Index++) {\r | |
99 | if (AsciiStrCmp (FieldName, HeaderFields[Index].FieldName) == 0) {\r | |
100 | //\r | |
101 | // Find the required header field.\r | |
102 | //\r | |
103 | return &HeaderFields[Index];\r | |
104 | }\r | |
105 | }\r | |
106 | return NULL;\r | |
107 | }\r | |
108 | \r | |
109 | /**\r | |
110 | Check whether header field called FieldName is in DeleteList.\r | |
111 | \r | |
112 | @param[in] DeleteList Pointer to array of key/value header pairs.\r | |
113 | @param[in] DeleteCount The number of header pairs.\r | |
114 | @param[in] FieldName Pointer to header field's name.\r | |
115 | \r | |
116 | @return TRUE if FieldName is not in DeleteList, that means this header field is valid.\r | |
117 | @return FALSE if FieldName is in DeleteList, that means this header field is invalid.\r | |
118 | \r | |
119 | **/\r | |
120 | BOOLEAN\r | |
121 | IsValidHttpHeader (\r | |
122 | IN CHAR8 *DeleteList[],\r | |
123 | IN UINTN DeleteCount,\r | |
124 | IN CHAR8 *FieldName\r | |
125 | )\r | |
126 | {\r | |
127 | UINTN Index;\r | |
128 | \r | |
129 | for (Index = 0; Index < DeleteCount; Index++) {\r | |
130 | if (AsciiStrCmp (FieldName, DeleteList[Index]) == 0) {\r | |
131 | return FALSE;\r | |
132 | }\r | |
133 | }\r | |
134 | \r | |
135 | return TRUE;\r | |
136 | }\r | |
137 | \r | |
138 | /**\r | |
139 | Set FieldName and FieldValue into specified HttpHeader.\r | |
140 | \r | |
141 | @param[in] HttpHeader Specified HttpHeader.\r | |
142 | @param[in] FieldName FieldName of this HttpHeader.\r | |
143 | @param[in] FieldValue FieldValue of this HttpHeader.\r | |
144 | \r | |
145 | \r | |
146 | @retval EFI_SUCCESS The FieldName and FieldValue are set into HttpHeader successfully.\r | |
147 | @retval EFI_OUT_OF_RESOURCES Failed to allocate resources.\r | |
148 | \r | |
149 | **/\r | |
150 | EFI_STATUS\r | |
151 | SetFieldNameAndValue (\r | |
152 | IN EFI_HTTP_HEADER *HttpHeader,\r | |
153 | IN CHAR8 *FieldName, \r | |
154 | IN CHAR8 *FieldValue\r | |
155 | )\r | |
156 | { \r | |
157 | UINTN FieldNameSize;\r | |
158 | UINTN FieldValueSize;\r | |
159 | \r | |
160 | if (HttpHeader->FieldName != NULL) {\r | |
161 | FreePool (HttpHeader->FieldName);\r | |
162 | }\r | |
163 | if (HttpHeader->FieldValue != NULL) {\r | |
164 | FreePool (HttpHeader->FieldValue);\r | |
165 | }\r | |
166 | \r | |
167 | FieldNameSize = AsciiStrSize (FieldName);\r | |
168 | HttpHeader->FieldName = AllocateZeroPool (FieldNameSize);\r | |
169 | if (HttpHeader->FieldName == NULL) {\r | |
170 | return EFI_OUT_OF_RESOURCES;\r | |
171 | }\r | |
172 | CopyMem (HttpHeader->FieldName, FieldName, FieldNameSize);\r | |
173 | HttpHeader->FieldName[FieldNameSize - 1] = 0;\r | |
174 | \r | |
175 | FieldValueSize = AsciiStrSize (FieldValue);\r | |
176 | HttpHeader->FieldValue = AllocateZeroPool (FieldValueSize);\r | |
177 | if (HttpHeader->FieldValue == NULL) {\r | |
178 | FreePool (HttpHeader->FieldName);\r | |
179 | return EFI_OUT_OF_RESOURCES;\r | |
180 | }\r | |
181 | CopyMem (HttpHeader->FieldValue, FieldValue, FieldValueSize);\r | |
182 | HttpHeader->FieldValue[FieldValueSize - 1] = 0;\r | |
183 | \r | |
184 | return EFI_SUCCESS;\r | |
185 | }\r | |
186 | \r | |
187 | /**\r | |
188 | Get one key/value header pair from the raw string.\r | |
189 | \r | |
190 | @param[in] String Pointer to the raw string.\r | |
191 | @param[out] FieldName Pointer to header field's name.\r | |
192 | @param[out] FieldValue Pointer to header field's value.\r | |
193 | \r | |
194 | @return Pointer to the next raw string.\r | |
195 | @return NULL if no key/value header pair from this raw string.\r | |
196 | \r | |
197 | **/\r | |
198 | CHAR8 *\r | |
199 | GetFieldNameAndValue (\r | |
200 | IN CHAR8 *String,\r | |
201 | OUT CHAR8 **FieldName,\r | |
202 | OUT CHAR8 **FieldValue\r | |
203 | )\r | |
204 | {\r | |
205 | CHAR8 *FieldNameStr;\r | |
206 | CHAR8 *FieldValueStr;\r | |
207 | CHAR8 *StrPtr;\r | |
208 | \r | |
209 | if (String == NULL || FieldName == NULL || FieldValue == NULL) {\r | |
210 | return NULL;\r | |
211 | }\r | |
212 | \r | |
213 | *FieldName = NULL;\r | |
214 | *FieldValue = NULL;\r | |
215 | FieldNameStr = NULL;\r | |
216 | FieldValueStr = NULL;\r | |
217 | StrPtr = NULL;\r | |
218 | \r | |
219 | //\r | |
220 | // Each header field consists of a name followed by a colon (":") and the field value.\r | |
221 | //\r | |
222 | FieldNameStr = String;\r | |
223 | FieldValueStr = AsciiStrGetNextToken (FieldNameStr, ':');\r | |
224 | if (FieldValueStr == NULL) {\r | |
225 | return NULL;\r | |
226 | }\r | |
227 | \r | |
228 | *(FieldValueStr - 1) = 0; /// Replace ':' with 0\r | |
229 | \r | |
230 | //\r | |
231 | // The field value MAY be preceded by any amount of LWS, though a single SP is preferred.\r | |
232 | //\r | |
233 | while (TRUE) {\r | |
234 | if(*FieldValueStr == ' ' || *FieldValueStr == '\t') {\r | |
235 | FieldValueStr ++;\r | |
236 | } else if (*FieldValueStr == '\r' && *(FieldValueStr + 1) == '\n' && \r | |
237 | (*(FieldValueStr + 2) == ' ' || *(FieldValueStr + 2) == '\t')) {\r | |
238 | FieldValueStr = FieldValueStr + 3;\r | |
239 | } else {\r | |
240 | break;\r | |
241 | }\r | |
242 | }\r | |
243 | \r | |
244 | //\r | |
245 | // Header fields can be extended over multiple lines by preceding each extra\r | |
246 | // line with at least one SP or HT.\r | |
247 | //\r | |
248 | StrPtr = FieldValueStr;\r | |
249 | do {\r | |
250 | StrPtr = AsciiStrGetNextToken (StrPtr, '\r');\r | |
251 | if (StrPtr == NULL || *StrPtr != '\n') {\r | |
252 | return NULL;\r | |
253 | }\r | |
254 | \r | |
255 | StrPtr++;\r | |
256 | } while (*StrPtr == ' ' || *StrPtr == '\t');\r | |
257 | \r | |
258 | //\r | |
259 | // Replace '\r' with 0.\r | |
260 | //\r | |
261 | *(StrPtr - 2) = 0;\r | |
262 | \r | |
263 | //\r | |
264 | // Get FieldName and FieldValue.\r | |
265 | //\r | |
266 | *FieldName = FieldNameStr;\r | |
267 | *FieldValue = FieldValueStr;\r | |
268 | \r | |
269 | return StrPtr;\r | |
270 | }\r | |
271 | \r | |
272 | /**\r | |
273 | This function is used to manage the headers portion of an HTTP message by providing \r | |
274 | the ability to add, remove, or replace HTTP headers.\r | |
275 | \r | |
276 | @param[in] SeedMessageSize Size in bytes of the initial HTTP header. This can be zero. \r | |
277 | @param[in] SeedMessage Initial raw unformatted HTTP header to be used as a base for \r | |
278 | building a new unformatted HTTP header. If NULL, SeedMessageSize \r | |
279 | is ignored. The buffer containing this message will be allocated \r | |
280 | and released by the caller. \r | |
281 | @param[in] DeleteCount Number of null-terminated HTTP header field names in DeleteList.\r | |
282 | @param[in] DeleteList List of null-terminated HTTP header field names to remove from SeedMessage. \r | |
283 | Only the field names are in this list because the field values are irrelevant \r | |
284 | to this operation. If NULL, DeleteCount is ignored. The buffer containing the \r | |
285 | list will be allocated and released by the caller.\r | |
286 | @param[in] AppendCount Number of header fields in AppendList. \r | |
287 | @param[in] AppendList List of HTTP headers to populate NewMessage with. If SeedMessage is not NULL, \r | |
288 | AppendList will be appended to the existing list from SeedMessage in NewMessage.\r | |
289 | @param[out] NewMessageSize Pointer to the size in bytes of the new unformatted HTTP header in NewMessage. \r | |
290 | @param[out] NewMessage Pointer to a new unformatted HTTP header. The storage for this NewMessage is \r | |
291 | allocated by the driver publishing this protocol, and must be freed by the caller. \r | |
292 | \r | |
293 | @retval EFI_SUCCESS Add, remove, and replace operations succeeded.\r | |
294 | @retval EFI_OUT_OF_RESOURCES Could not allocate memory for NewMessage.\r | |
295 | \r | |
296 | **/\r | |
297 | EFI_STATUS\r | |
298 | HttpUtilitiesBuild(\r | |
299 | IN UINTN SeedMessageSize,\r | |
300 | IN VOID *SeedMessage, OPTIONAL\r | |
301 | IN UINTN DeleteCount,\r | |
302 | IN CHAR8 *DeleteList[], OPTIONAL\r | |
303 | IN UINTN AppendCount,\r | |
304 | IN EFI_HTTP_HEADER *AppendList[], OPTIONAL\r | |
305 | OUT UINTN *NewMessageSize,\r | |
306 | OUT VOID **NewMessage\r | |
307 | )\r | |
308 | {\r | |
309 | EFI_STATUS Status; \r | |
310 | EFI_HTTP_HEADER *SeedHeaderFields;\r | |
311 | UINTN SeedFieldCount;\r | |
312 | UINTN Index;\r | |
313 | EFI_HTTP_HEADER *TempHeaderFields;\r | |
314 | UINTN TempFieldCount;\r | |
315 | EFI_HTTP_HEADER *NewHeaderFields;\r | |
316 | UINTN NewFieldCount;\r | |
317 | EFI_HTTP_HEADER *HttpHeader;\r | |
318 | UINTN StrLength;\r | |
319 | UINT8 *NewMessagePtr;\r | |
320 | \r | |
321 | SeedHeaderFields = NULL;\r | |
322 | SeedFieldCount = 0;\r | |
323 | TempHeaderFields = NULL;\r | |
324 | TempFieldCount = 0;\r | |
325 | NewHeaderFields = NULL;\r | |
326 | NewFieldCount = 0;\r | |
327 | \r | |
328 | HttpHeader = NULL; \r | |
329 | StrLength = 0;\r | |
330 | NewMessagePtr = NULL;\r | |
331 | *NewMessageSize = 0;\r | |
332 | Status = EFI_SUCCESS;\r | |
333 | \r | |
334 | if (SeedMessage != NULL) {\r | |
335 | Status = HttpUtilitiesParse (\r | |
336 | SeedMessage,\r | |
337 | SeedMessageSize,\r | |
338 | &SeedHeaderFields,\r | |
339 | &SeedFieldCount\r | |
340 | );\r | |
341 | if (EFI_ERROR (Status)){\r | |
342 | goto ON_EXIT;\r | |
343 | }\r | |
344 | }\r | |
345 | \r | |
346 | //\r | |
347 | // Handle DeleteList\r | |
348 | //\r | |
349 | if(SeedFieldCount != 0 && DeleteCount != 0) {\r | |
350 | TempHeaderFields = AllocateZeroPool (SeedFieldCount * sizeof(EFI_HTTP_HEADER));\r | |
351 | if (TempHeaderFields == NULL) {\r | |
352 | Status = EFI_OUT_OF_RESOURCES;\r | |
353 | goto ON_EXIT;\r | |
354 | }\r | |
355 | \r | |
356 | for (Index = 0, TempFieldCount = 0; Index < SeedFieldCount; Index++) {\r | |
357 | //\r | |
358 | // Check whether each SeedHeaderFields member is in DeleteList\r | |
359 | //\r | |
360 | if (IsValidHttpHeader(DeleteList, DeleteCount, SeedHeaderFields[Index].FieldName)) {\r | |
361 | Status = SetFieldNameAndValue(\r | |
362 | &TempHeaderFields[TempFieldCount],\r | |
363 | SeedHeaderFields[Index].FieldName,\r | |
364 | SeedHeaderFields[Index].FieldValue\r | |
365 | );\r | |
366 | if (EFI_ERROR (Status)){\r | |
367 | goto ON_EXIT;\r | |
368 | }\r | |
369 | TempFieldCount++;\r | |
370 | }\r | |
371 | }\r | |
372 | } else {\r | |
373 | TempHeaderFields = SeedHeaderFields;\r | |
374 | TempFieldCount = SeedFieldCount;\r | |
375 | }\r | |
376 | \r | |
377 | //\r | |
378 | // Handle AppendList\r | |
379 | //\r | |
380 | NewHeaderFields = AllocateZeroPool ((TempFieldCount + AppendCount) * sizeof(EFI_HTTP_HEADER));\r | |
381 | if (NewHeaderFields == NULL) {\r | |
382 | Status = EFI_OUT_OF_RESOURCES;\r | |
383 | goto ON_EXIT;\r | |
384 | }\r | |
385 | \r | |
386 | for (Index = 0; Index < TempFieldCount; Index++) {\r | |
387 | Status = SetFieldNameAndValue(\r | |
388 | &NewHeaderFields[Index],\r | |
389 | TempHeaderFields[Index].FieldName,\r | |
390 | TempHeaderFields[Index].FieldValue\r | |
391 | );\r | |
392 | if (EFI_ERROR (Status)){\r | |
393 | goto ON_EXIT;\r | |
394 | }\r | |
395 | }\r | |
396 | \r | |
397 | NewFieldCount = TempFieldCount;\r | |
398 | \r | |
399 | for (Index = 0; Index < AppendCount; Index++) {\r | |
400 | HttpHeader = FindHttpHeader(NewHeaderFields, NewFieldCount, AppendList[Index]->FieldName);\r | |
401 | if(HttpHeader != NULL) {\r | |
402 | Status = SetFieldNameAndValue(\r | |
403 | HttpHeader,\r | |
404 | AppendList[Index]->FieldName,\r | |
405 | AppendList[Index]->FieldValue\r | |
406 | );\r | |
407 | if (EFI_ERROR (Status)){\r | |
408 | goto ON_EXIT;\r | |
409 | }\r | |
410 | } else {\r | |
411 | Status = SetFieldNameAndValue\r | |
412 | (&NewHeaderFields[NewFieldCount],\r | |
413 | AppendList[Index]->FieldName,\r | |
414 | AppendList[Index]->FieldValue\r | |
415 | );\r | |
416 | if (EFI_ERROR (Status)){\r | |
417 | goto ON_EXIT;\r | |
418 | }\r | |
419 | NewFieldCount++;\r | |
420 | }\r | |
421 | }\r | |
422 | \r | |
423 | //\r | |
424 | // Calculate NewMessageSize, then build NewMessage\r | |
425 | //\r | |
426 | for (Index = 0; Index < NewFieldCount; Index++) {\r | |
427 | HttpHeader = &NewHeaderFields[Index];\r | |
428 | \r | |
429 | StrLength = AsciiStrLen (HttpHeader->FieldName);\r | |
430 | *NewMessageSize += StrLength;\r | |
431 | \r | |
432 | StrLength = sizeof(": ") - 1;\r | |
433 | *NewMessageSize += StrLength;\r | |
434 | \r | |
435 | StrLength = AsciiStrLen (HttpHeader->FieldValue);\r | |
436 | *NewMessageSize += StrLength;\r | |
437 | \r | |
438 | StrLength = sizeof(HTTP_CRLF_STR) - 1;\r | |
439 | *NewMessageSize += StrLength;\r | |
440 | }\r | |
441 | StrLength = sizeof(HTTP_CRLF_STR) - 1;\r | |
442 | *NewMessageSize += StrLength;\r | |
443 | //\r | |
444 | // Final 0 for end flag.\r | |
445 | //\r | |
446 | *NewMessageSize += 1;\r | |
447 | \r | |
448 | *NewMessage = AllocateZeroPool (*NewMessageSize);\r | |
449 | if (*NewMessage == NULL) {\r | |
450 | Status = EFI_OUT_OF_RESOURCES;\r | |
451 | goto ON_EXIT;\r | |
452 | }\r | |
453 | \r | |
454 | NewMessagePtr = (UINT8 *)(*NewMessage);\r | |
455 | \r | |
456 | for (Index = 0; Index < NewFieldCount; Index++) {\r | |
457 | HttpHeader = &NewHeaderFields[Index];\r | |
458 | \r | |
459 | StrLength = AsciiStrLen (HttpHeader->FieldName);\r | |
460 | CopyMem (NewMessagePtr, HttpHeader->FieldName, StrLength);\r | |
461 | NewMessagePtr += StrLength;\r | |
462 | \r | |
463 | StrLength = sizeof(": ") - 1;\r | |
464 | CopyMem (NewMessagePtr, ": ", StrLength);\r | |
465 | NewMessagePtr += StrLength;\r | |
466 | \r | |
467 | StrLength = AsciiStrLen (HttpHeader->FieldValue);\r | |
468 | CopyMem (NewMessagePtr, HttpHeader->FieldValue, StrLength);\r | |
469 | NewMessagePtr += StrLength;\r | |
470 | \r | |
471 | StrLength = sizeof(HTTP_CRLF_STR) - 1;\r | |
472 | CopyMem (NewMessagePtr, HTTP_CRLF_STR, StrLength);\r | |
473 | NewMessagePtr += StrLength;\r | |
474 | }\r | |
475 | StrLength = sizeof(HTTP_CRLF_STR) - 1;\r | |
476 | CopyMem (NewMessagePtr, HTTP_CRLF_STR, StrLength);\r | |
477 | NewMessagePtr += StrLength;\r | |
478 | \r | |
479 | *NewMessagePtr = 0;\r | |
480 | \r | |
481 | ASSERT (*NewMessageSize == (UINTN) NewMessagePtr - (UINTN) (*NewMessage) + 1);\r | |
482 | \r | |
483 | //\r | |
484 | // Free allocated buffer \r | |
485 | //\r | |
486 | ON_EXIT:\r | |
487 | if(SeedHeaderFields != NULL) {\r | |
488 | FreeHeaderFields(SeedHeaderFields, SeedFieldCount);\r | |
489 | }\r | |
490 | \r | |
491 | if(TempHeaderFields != NULL) {\r | |
492 | FreeHeaderFields(TempHeaderFields, TempFieldCount);\r | |
493 | }\r | |
494 | \r | |
495 | if(NewHeaderFields != NULL) {\r | |
496 | FreeHeaderFields(NewHeaderFields, NewFieldCount);\r | |
497 | }\r | |
498 | \r | |
499 | return Status;\r | |
500 | }\r | |
501 | \r | |
502 | /**\r | |
503 | This function is used to transform data stored in HttpMessage into a list of fields \r | |
504 | paired with their corresponding values.\r | |
505 | \r | |
506 | @param[in] HttpMessage Contains raw unformatted HTTP header string. The buffer for this string will \r | |
507 | be allocated and released by the caller.\r | |
508 | @param[in] HttpMessageSize Size in bytes of raw unformatted HTTP header. \r | |
509 | @param[out] HeaderFields Array of key/value header pairs. The storage for all header pairs is allocated\r | |
510 | by the driver publishing this protocol, and must be freed by the caller. \r | |
511 | @param[out] FieldCount Number of headers in HeaderFields.\r | |
512 | \r | |
513 | @retval EFI_SUCCESS Parse HTTP header into array of key/value pairs succeeded.\r | |
514 | @retval EFI_OUT_OF_RESOURCES Could not allocate memory for NewMessage.\r | |
515 | @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:\r | |
516 | HttpMessage is NULL.\r | |
517 | HeaderFields is NULL.\r | |
518 | FieldCount is NULL.\r | |
519 | \r | |
520 | **/\r | |
521 | EFI_STATUS\r | |
522 | HttpUtilitiesParse(\r | |
523 | IN CHAR8 *HttpMessage,\r | |
524 | IN UINTN HttpMessageSize,\r | |
525 | OUT EFI_HTTP_HEADER **HeaderFields,\r | |
526 | OUT UINTN *FieldCount\r | |
527 | )\r | |
528 | {\r | |
529 | EFI_STATUS Status;\r | |
530 | CHAR8 *TempHttpMessage;\r | |
531 | CHAR8 *Token;\r | |
532 | CHAR8 *NextToken;\r | |
533 | CHAR8 *FieldName;\r | |
534 | CHAR8 *FieldValue;\r | |
535 | UINTN Index;\r | |
536 | \r | |
537 | if (HttpMessage == NULL || HeaderFields == NULL || FieldCount == NULL) {\r | |
538 | return EFI_INVALID_PARAMETER;\r | |
539 | }\r | |
540 | \r | |
541 | Status = EFI_SUCCESS;\r | |
542 | TempHttpMessage = NULL;\r | |
543 | *FieldCount = 0;\r | |
544 | Token = NULL;\r | |
545 | NextToken = NULL;\r | |
546 | FieldName = NULL;\r | |
547 | FieldValue = NULL;\r | |
548 | Index = 0; \r | |
549 | \r | |
550 | TempHttpMessage = AllocateZeroPool (HttpMessageSize);\r | |
551 | if (TempHttpMessage == NULL) {\r | |
552 | return EFI_OUT_OF_RESOURCES;\r | |
553 | }\r | |
554 | \r | |
555 | CopyMem (TempHttpMessage, HttpMessage, HttpMessageSize);\r | |
556 | \r | |
557 | //\r | |
558 | // Get header number\r | |
559 | //\r | |
560 | Token = TempHttpMessage;\r | |
561 | while (TRUE) {\r | |
562 | FieldName = NULL;\r | |
563 | FieldValue = NULL;\r | |
564 | NextToken = GetFieldNameAndValue (Token, &FieldName, &FieldValue);\r | |
565 | Token = NextToken;\r | |
566 | if (FieldName == NULL || FieldValue == NULL) {\r | |
567 | break;\r | |
568 | }\r | |
569 | \r | |
570 | (*FieldCount)++;\r | |
571 | }\r | |
572 | \r | |
573 | if(*FieldCount == 0) {\r | |
574 | Status = EFI_INVALID_PARAMETER;\r | |
575 | goto ON_EXIT;\r | |
576 | }\r | |
577 | \r | |
578 | //\r | |
579 | // Allocate buffer for header\r | |
580 | //\r | |
581 | *HeaderFields = AllocateZeroPool ((*FieldCount) * sizeof(EFI_HTTP_HEADER));\r | |
582 | if (*HeaderFields == NULL) {\r | |
583 | *FieldCount = 0;\r | |
584 | Status = EFI_OUT_OF_RESOURCES;\r | |
585 | goto ON_EXIT;\r | |
586 | }\r | |
587 | \r | |
588 | CopyMem (TempHttpMessage, HttpMessage, HttpMessageSize);\r | |
589 | \r | |
590 | //\r | |
591 | // Set Field and Value to each header\r | |
592 | //\r | |
593 | Token = TempHttpMessage;\r | |
594 | while (Index < *FieldCount) {\r | |
595 | FieldName = NULL;\r | |
596 | FieldValue = NULL;\r | |
597 | NextToken = GetFieldNameAndValue (Token, &FieldName, &FieldValue);\r | |
598 | Token = NextToken;\r | |
599 | if (FieldName == NULL || FieldValue == NULL) {\r | |
600 | break;\r | |
601 | }\r | |
602 | \r | |
603 | Status = SetFieldNameAndValue(&(*HeaderFields)[Index], FieldName, FieldValue);\r | |
604 | if(EFI_ERROR(Status)){\r | |
605 | *FieldCount = 0;\r | |
606 | FreeHeaderFields (*HeaderFields, Index);\r | |
607 | goto ON_EXIT;\r | |
608 | }\r | |
609 | \r | |
610 | Index++;\r | |
611 | }\r | |
612 | \r | |
613 | //\r | |
614 | // Free allocated buffer \r | |
615 | //\r | |
616 | ON_EXIT:\r | |
617 | if (TempHttpMessage != NULL) {\r | |
618 | FreePool(TempHttpMessage);\r | |
619 | }\r | |
620 | \r | |
621 | return Status;\r | |
622 | }\r |