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1 | /** @file\r | |
2 | Implementation of EFI_HTTP_PROTOCOL protocol interfaces.\r | |
3 | \r | |
4 | Copyright (c) 2015 - 2018, Intel Corporation. All rights reserved.<BR>\r | |
5 | (C) Copyright 2016 Hewlett Packard Enterprise Development LP<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 "HttpUtilitiesDxe.h"\r | |
17 | \r | |
18 | EFI_HTTP_UTILITIES_PROTOCOL mHttpUtilitiesProtocol = {\r | |
19 | HttpUtilitiesBuild,\r | |
20 | HttpUtilitiesParse\r | |
21 | };\r | |
22 | \r | |
23 | \r | |
24 | /**\r | |
25 | Create HTTP header based on a combination of seed header, fields\r | |
26 | to delete, and fields to append.\r | |
27 | \r | |
28 | The Build() function is used to manage the headers portion of an\r | |
29 | HTTP message by providing the ability to add, remove, or replace\r | |
30 | HTTP headers.\r | |
31 | \r | |
32 | @param[in] This Pointer to EFI_HTTP_UTILITIES_PROTOCOL instance.\r | |
33 | @param[in] SeedMessageSize Size of the initial HTTP header. This can be zero.\r | |
34 | @param[in] SeedMessage Initial HTTP header to be used as a base for\r | |
35 | building a new HTTP header. If NULL,\r | |
36 | SeedMessageSize is ignored.\r | |
37 | @param[in] DeleteCount Number of null-terminated HTTP header field names\r | |
38 | in DeleteList.\r | |
39 | @param[in] DeleteList List of null-terminated HTTP header field names to\r | |
40 | remove from SeedMessage. Only the field names are\r | |
41 | in this list because the field values are irrelevant\r | |
42 | to this operation.\r | |
43 | @param[in] AppendCount Number of header fields in AppendList.\r | |
44 | @param[in] AppendList List of HTTP headers to populate NewMessage with.\r | |
45 | If SeedMessage is not NULL, AppendList will be\r | |
46 | appended to the existing list from SeedMessage in\r | |
47 | NewMessage.\r | |
48 | @param[out] NewMessageSize Pointer to number of header fields in NewMessage.\r | |
49 | @param[out] NewMessage Pointer to a new list of HTTP headers based on.\r | |
50 | \r | |
51 | @retval EFI_SUCCESS Add, remove, and replace operations succeeded.\r | |
52 | @retval EFI_OUT_OF_RESOURCES Could not allocate memory for NewMessage.\r | |
53 | @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:\r | |
54 | This is NULL.\r | |
55 | **/\r | |
56 | EFI_STATUS\r | |
57 | EFIAPI\r | |
58 | HttpUtilitiesBuild (\r | |
59 | IN EFI_HTTP_UTILITIES_PROTOCOL *This,\r | |
60 | IN UINTN SeedMessageSize,\r | |
61 | IN VOID *SeedMessage, OPTIONAL\r | |
62 | IN UINTN DeleteCount,\r | |
63 | IN CHAR8 *DeleteList[], OPTIONAL\r | |
64 | IN UINTN AppendCount,\r | |
65 | IN EFI_HTTP_HEADER *AppendList[], OPTIONAL\r | |
66 | OUT UINTN *NewMessageSize,\r | |
67 | OUT VOID **NewMessage\r | |
68 | )\r | |
69 | {\r | |
70 | EFI_STATUS Status;\r | |
71 | EFI_HTTP_HEADER *SeedHeaderFields;\r | |
72 | UINTN SeedFieldCount;\r | |
73 | UINTN Index;\r | |
74 | EFI_HTTP_HEADER *TempHeaderFields;\r | |
75 | UINTN TempFieldCount;\r | |
76 | EFI_HTTP_HEADER *NewHeaderFields;\r | |
77 | UINTN NewFieldCount;\r | |
78 | EFI_HTTP_HEADER *HttpHeader;\r | |
79 | UINTN StrLength;\r | |
80 | UINT8 *NewMessagePtr;\r | |
81 | \r | |
82 | SeedHeaderFields = NULL;\r | |
83 | SeedFieldCount = 0;\r | |
84 | TempHeaderFields = NULL;\r | |
85 | TempFieldCount = 0;\r | |
86 | NewHeaderFields = NULL;\r | |
87 | NewFieldCount = 0;\r | |
88 | \r | |
89 | HttpHeader = NULL;\r | |
90 | StrLength = 0;\r | |
91 | NewMessagePtr = NULL;\r | |
92 | *NewMessageSize = 0;\r | |
93 | Status = EFI_SUCCESS;\r | |
94 | \r | |
95 | if (This == NULL) {\r | |
96 | return EFI_INVALID_PARAMETER;\r | |
97 | }\r | |
98 | \r | |
99 | if (SeedMessage != NULL) {\r | |
100 | Status = This->Parse (\r | |
101 | This,\r | |
102 | SeedMessage,\r | |
103 | SeedMessageSize,\r | |
104 | &SeedHeaderFields,\r | |
105 | &SeedFieldCount\r | |
106 | );\r | |
107 | if (EFI_ERROR (Status)) {\r | |
108 | goto ON_EXIT;\r | |
109 | }\r | |
110 | }\r | |
111 | \r | |
112 | //\r | |
113 | // Handle DeleteList\r | |
114 | //\r | |
115 | if (SeedFieldCount != 0 && DeleteCount != 0) {\r | |
116 | TempHeaderFields = AllocateZeroPool (SeedFieldCount * sizeof(EFI_HTTP_HEADER));\r | |
117 | if (TempHeaderFields == NULL) {\r | |
118 | Status = EFI_OUT_OF_RESOURCES;\r | |
119 | goto ON_EXIT;\r | |
120 | }\r | |
121 | \r | |
122 | for (Index = 0, TempFieldCount = 0; Index < SeedFieldCount; Index++) {\r | |
123 | //\r | |
124 | // Check whether each SeedHeaderFields member is in DeleteList\r | |
125 | //\r | |
126 | if (HttpIsValidHttpHeader( DeleteList, DeleteCount, SeedHeaderFields[Index].FieldName)) {\r | |
127 | Status = HttpSetFieldNameAndValue (\r | |
128 | &TempHeaderFields[TempFieldCount],\r | |
129 | SeedHeaderFields[Index].FieldName,\r | |
130 | SeedHeaderFields[Index].FieldValue\r | |
131 | );\r | |
132 | if (EFI_ERROR (Status)) {\r | |
133 | goto ON_EXIT;\r | |
134 | }\r | |
135 | TempFieldCount++;\r | |
136 | }\r | |
137 | }\r | |
138 | } else {\r | |
139 | TempHeaderFields = SeedHeaderFields;\r | |
140 | TempFieldCount = SeedFieldCount;\r | |
141 | }\r | |
142 | \r | |
143 | //\r | |
144 | // Handle AppendList\r | |
145 | //\r | |
146 | NewHeaderFields = AllocateZeroPool ((TempFieldCount + AppendCount) * sizeof (EFI_HTTP_HEADER));\r | |
147 | if (NewHeaderFields == NULL) {\r | |
148 | Status = EFI_OUT_OF_RESOURCES;\r | |
149 | goto ON_EXIT;\r | |
150 | }\r | |
151 | \r | |
152 | for (Index = 0; Index < TempFieldCount; Index++) {\r | |
153 | Status = HttpSetFieldNameAndValue (\r | |
154 | &NewHeaderFields[Index],\r | |
155 | TempHeaderFields[Index].FieldName,\r | |
156 | TempHeaderFields[Index].FieldValue\r | |
157 | );\r | |
158 | if (EFI_ERROR (Status)) {\r | |
159 | goto ON_EXIT;\r | |
160 | }\r | |
161 | }\r | |
162 | \r | |
163 | NewFieldCount = TempFieldCount;\r | |
164 | \r | |
165 | for (Index = 0; Index < AppendCount; Index++) {\r | |
166 | HttpHeader = HttpFindHeader (NewFieldCount, NewHeaderFields, AppendList[Index]->FieldName);\r | |
167 | if (HttpHeader != NULL) {\r | |
168 | Status = HttpSetFieldNameAndValue (\r | |
169 | HttpHeader,\r | |
170 | AppendList[Index]->FieldName,\r | |
171 | AppendList[Index]->FieldValue\r | |
172 | );\r | |
173 | if (EFI_ERROR (Status)) {\r | |
174 | goto ON_EXIT;\r | |
175 | }\r | |
176 | } else {\r | |
177 | Status = HttpSetFieldNameAndValue (\r | |
178 | &NewHeaderFields[NewFieldCount],\r | |
179 | AppendList[Index]->FieldName,\r | |
180 | AppendList[Index]->FieldValue\r | |
181 | );\r | |
182 | if (EFI_ERROR (Status)) {\r | |
183 | goto ON_EXIT;\r | |
184 | }\r | |
185 | NewFieldCount++;\r | |
186 | }\r | |
187 | }\r | |
188 | \r | |
189 | //\r | |
190 | // Calculate NewMessageSize, then build NewMessage\r | |
191 | //\r | |
192 | for (Index = 0; Index < NewFieldCount; Index++) {\r | |
193 | HttpHeader = &NewHeaderFields[Index];\r | |
194 | \r | |
195 | StrLength = AsciiStrLen (HttpHeader->FieldName);\r | |
196 | *NewMessageSize += StrLength;\r | |
197 | \r | |
198 | StrLength = sizeof(": ") - 1;\r | |
199 | *NewMessageSize += StrLength;\r | |
200 | \r | |
201 | StrLength = AsciiStrLen (HttpHeader->FieldValue);\r | |
202 | *NewMessageSize += StrLength;\r | |
203 | \r | |
204 | StrLength = sizeof("\r\n") - 1;\r | |
205 | *NewMessageSize += StrLength;\r | |
206 | }\r | |
207 | StrLength = sizeof("\r\n") - 1;\r | |
208 | *NewMessageSize += StrLength;\r | |
209 | \r | |
210 | *NewMessage = AllocateZeroPool (*NewMessageSize);\r | |
211 | if (*NewMessage == NULL) {\r | |
212 | Status = EFI_OUT_OF_RESOURCES;\r | |
213 | goto ON_EXIT;\r | |
214 | }\r | |
215 | \r | |
216 | NewMessagePtr = (UINT8 *)(*NewMessage);\r | |
217 | \r | |
218 | for (Index = 0; Index < NewFieldCount; Index++) {\r | |
219 | HttpHeader = &NewHeaderFields[Index];\r | |
220 | \r | |
221 | StrLength = AsciiStrLen (HttpHeader->FieldName);\r | |
222 | CopyMem (NewMessagePtr, HttpHeader->FieldName, StrLength);\r | |
223 | NewMessagePtr += StrLength;\r | |
224 | \r | |
225 | StrLength = sizeof(": ") - 1;\r | |
226 | CopyMem (NewMessagePtr, ": ", StrLength);\r | |
227 | NewMessagePtr += StrLength;\r | |
228 | \r | |
229 | StrLength = AsciiStrLen (HttpHeader->FieldValue);\r | |
230 | CopyMem (NewMessagePtr, HttpHeader->FieldValue, StrLength);\r | |
231 | NewMessagePtr += StrLength;\r | |
232 | \r | |
233 | StrLength = sizeof("\r\n") - 1;\r | |
234 | CopyMem (NewMessagePtr, "\r\n", StrLength);\r | |
235 | NewMessagePtr += StrLength;\r | |
236 | }\r | |
237 | StrLength = sizeof("\r\n") - 1;\r | |
238 | CopyMem (NewMessagePtr, "\r\n", StrLength);\r | |
239 | NewMessagePtr += StrLength;\r | |
240 | \r | |
241 | ASSERT (*NewMessageSize == (UINTN)NewMessagePtr - (UINTN)(*NewMessage));\r | |
242 | \r | |
243 | //\r | |
244 | // Free allocated buffer\r | |
245 | //\r | |
246 | ON_EXIT:\r | |
247 | if (SeedHeaderFields != NULL) {\r | |
248 | HttpFreeHeaderFields(SeedHeaderFields, SeedFieldCount);\r | |
249 | }\r | |
250 | \r | |
251 | if (TempHeaderFields != NULL) {\r | |
252 | HttpFreeHeaderFields(TempHeaderFields, TempFieldCount);\r | |
253 | }\r | |
254 | \r | |
255 | if (NewHeaderFields != NULL) {\r | |
256 | HttpFreeHeaderFields(NewHeaderFields, NewFieldCount);\r | |
257 | }\r | |
258 | \r | |
259 | return Status;\r | |
260 | }\r | |
261 | \r | |
262 | \r | |
263 | /**\r | |
264 | Parses HTTP header and produces an array of key/value pairs.\r | |
265 | \r | |
266 | The Parse() function is used to transform data stored in HttpHeader\r | |
267 | into a list of fields paired with their corresponding values.\r | |
268 | \r | |
269 | @param[in] This Pointer to EFI_HTTP_UTILITIES_PROTOCOL instance.\r | |
270 | @param[in] HttpMessage Contains raw unformatted HTTP header string.\r | |
271 | @param[in] HttpMessageSize Size of HTTP header.\r | |
272 | @param[out] HeaderFields Array of key/value header pairs.\r | |
273 | @param[out] FieldCount Number of headers in HeaderFields.\r | |
274 | \r | |
275 | @retval EFI_SUCCESS Allocation succeeded.\r | |
276 | @retval EFI_NOT_STARTED This EFI HTTP Protocol instance has not been\r | |
277 | initialized.\r | |
278 | @retval EFI_INVALID_PARAMETER One or more of the following conditions is TRUE:\r | |
279 | This is NULL.\r | |
280 | HttpMessage is NULL.\r | |
281 | HeaderFields is NULL.\r | |
282 | FieldCount is NULL.\r | |
283 | **/\r | |
284 | EFI_STATUS\r | |
285 | EFIAPI\r | |
286 | HttpUtilitiesParse (\r | |
287 | IN EFI_HTTP_UTILITIES_PROTOCOL *This,\r | |
288 | IN CHAR8 *HttpMessage,\r | |
289 | IN UINTN HttpMessageSize,\r | |
290 | OUT EFI_HTTP_HEADER **HeaderFields,\r | |
291 | OUT UINTN *FieldCount\r | |
292 | )\r | |
293 | {\r | |
294 | EFI_STATUS Status;\r | |
295 | CHAR8 *TempHttpMessage;\r | |
296 | CHAR8 *Token;\r | |
297 | CHAR8 *NextToken;\r | |
298 | CHAR8 *FieldName;\r | |
299 | CHAR8 *FieldValue;\r | |
300 | UINTN Index;\r | |
301 | \r | |
302 | Status = EFI_SUCCESS;\r | |
303 | TempHttpMessage = NULL;\r | |
304 | Token = NULL;\r | |
305 | NextToken = NULL;\r | |
306 | FieldName = NULL;\r | |
307 | FieldValue = NULL;\r | |
308 | Index = 0;\r | |
309 | \r | |
310 | if (This == NULL || HttpMessage == NULL || HeaderFields == NULL || FieldCount == NULL) {\r | |
311 | return EFI_INVALID_PARAMETER;\r | |
312 | }\r | |
313 | \r | |
314 | TempHttpMessage = AllocateZeroPool (HttpMessageSize);\r | |
315 | if (TempHttpMessage == NULL) {\r | |
316 | return EFI_OUT_OF_RESOURCES;\r | |
317 | }\r | |
318 | \r | |
319 | CopyMem (TempHttpMessage, HttpMessage, HttpMessageSize);\r | |
320 | \r | |
321 | //\r | |
322 | // Get header number\r | |
323 | //\r | |
324 | *FieldCount = 0;\r | |
325 | Token = TempHttpMessage;\r | |
326 | while (TRUE) {\r | |
327 | FieldName = NULL;\r | |
328 | FieldValue = NULL;\r | |
329 | NextToken = HttpGetFieldNameAndValue (Token, &FieldName, &FieldValue);\r | |
330 | Token = NextToken;\r | |
331 | if (FieldName == NULL || FieldValue == NULL) {\r | |
332 | break;\r | |
333 | }\r | |
334 | \r | |
335 | (*FieldCount)++;\r | |
336 | }\r | |
337 | \r | |
338 | if (*FieldCount == 0) {\r | |
339 | Status = EFI_INVALID_PARAMETER;\r | |
340 | goto ON_EXIT;\r | |
341 | }\r | |
342 | \r | |
343 | //\r | |
344 | // Allocate buffer for header\r | |
345 | //\r | |
346 | *HeaderFields = AllocateZeroPool ((*FieldCount) * sizeof(EFI_HTTP_HEADER));\r | |
347 | if (*HeaderFields == NULL) {\r | |
348 | *FieldCount = 0;\r | |
349 | Status = EFI_OUT_OF_RESOURCES;\r | |
350 | goto ON_EXIT;\r | |
351 | }\r | |
352 | \r | |
353 | CopyMem (TempHttpMessage, HttpMessage, HttpMessageSize);\r | |
354 | \r | |
355 | //\r | |
356 | // Set Field and Value to each header\r | |
357 | //\r | |
358 | Token = TempHttpMessage;\r | |
359 | while (Index < *FieldCount) {\r | |
360 | FieldName = NULL;\r | |
361 | FieldValue = NULL;\r | |
362 | NextToken = HttpGetFieldNameAndValue (Token, &FieldName, &FieldValue);\r | |
363 | Token = NextToken;\r | |
364 | if (FieldName == NULL || FieldValue == NULL) {\r | |
365 | break;\r | |
366 | }\r | |
367 | \r | |
368 | Status = HttpSetFieldNameAndValue (&(*HeaderFields)[Index], FieldName, FieldValue);\r | |
369 | if (EFI_ERROR (Status)) {\r | |
370 | *FieldCount = 0;\r | |
371 | HttpFreeHeaderFields (*HeaderFields, Index);\r | |
372 | goto ON_EXIT;\r | |
373 | }\r | |
374 | \r | |
375 | Index++;\r | |
376 | }\r | |
377 | \r | |
378 | //\r | |
379 | // Free allocated buffer\r | |
380 | //\r | |
381 | ON_EXIT:\r | |
382 | if (TempHttpMessage != NULL) {\r | |
383 | FreePool (TempHttpMessage);\r | |
384 | }\r | |
385 | \r | |
386 | return Status;\r | |
387 | }\r |