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1 | /** @file\r |
2 | The implementation of EFI_LOAD_FILE_PROTOCOL for UEFI HTTP boot.\r | |
3 | \r | |
4 | Copyright (c) 2015, Intel Corporation. All rights reserved.<BR>\r | |
5 | This program and the accompanying materials are licensed and made available under \r | |
6 | the terms and conditions of the BSD License that accompanies this distribution. \r | |
7 | The full text of the license may be found at\r | |
8 | http://opensource.org/licenses/bsd-license.php. \r | |
9 | \r | |
10 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS, \r | |
11 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
12 | \r | |
13 | **/\r | |
14 | \r | |
15 | #include "HttpBootDxe.h"\r | |
16 | \r | |
17 | /**\r | |
18 | Enable the use of UEFI HTTP boot function.\r | |
19 | \r | |
20 | @param[in] Private The pointer to the driver's private data.\r | |
21 | \r | |
22 | @retval EFI_SUCCESS HTTP boot was successfully enabled.\r | |
23 | @retval EFI_INVALID_PARAMETER Private is NULL.\r | |
24 | @retval EFI_ALREADY_STARTED The driver is already in started state.\r | |
25 | \r | |
26 | **/\r | |
27 | EFI_STATUS\r | |
28 | HttpBootStart (\r | |
29 | IN HTTP_BOOT_PRIVATE_DATA *Private\r | |
30 | )\r | |
31 | {\r | |
32 | UINTN Index;\r | |
33 | \r | |
34 | if (Private == NULL) {\r | |
35 | return EFI_INVALID_PARAMETER;\r | |
36 | }\r | |
37 | \r | |
38 | if (Private->Started) {\r | |
39 | return EFI_ALREADY_STARTED;\r | |
40 | }\r | |
41 | \r | |
42 | if (!Private->UsingIpv6) {\r | |
43 | //\r | |
44 | // Init the content of cached DHCP offer list.\r | |
45 | //\r | |
46 | ZeroMem (Private->OfferBuffer, sizeof (Private->OfferBuffer));\r | |
47 | for (Index = 0; Index < HTTP_BOOT_OFFER_MAX_NUM; Index++) {\r | |
48 | Private->OfferBuffer[Index].Dhcp4.Packet.Offer.Size = HTTP_BOOT_DHCP4_PACKET_MAX_SIZE;\r | |
49 | }\r | |
50 | } else {\r | |
51 | ASSERT (FALSE);\r | |
52 | }\r | |
53 | \r | |
54 | Private->Started = TRUE;\r | |
55 | \r | |
56 | return EFI_SUCCESS;\r | |
57 | }\r | |
58 | \r | |
59 | /**\r | |
60 | Attempt to complete a DHCPv4 D.O.R.A sequence to retrieve the boot resource information.\r | |
61 | \r | |
62 | @param[in] Private The pointer to the driver's private data.\r | |
63 | \r | |
64 | @retval EFI_SUCCESS Boot info was successfully retrieved.\r | |
65 | @retval EFI_INVALID_PARAMETER Private is NULL.\r | |
66 | @retval EFI_NOT_STARTED The driver is in stopped state.\r | |
67 | @retval EFI_DEVICE_ERROR An unexpected network error occurred.\r | |
68 | @retval Others Other errors as indicated.\r | |
69 | \r | |
70 | **/\r | |
71 | EFI_STATUS\r | |
72 | HttpBootDhcp (\r | |
73 | IN HTTP_BOOT_PRIVATE_DATA *Private\r | |
74 | )\r | |
75 | {\r | |
76 | EFI_STATUS Status;\r | |
77 | \r | |
78 | if (Private == NULL) {\r | |
79 | return EFI_INVALID_PARAMETER;\r | |
80 | }\r | |
81 | \r | |
82 | if (!Private->Started) {\r | |
83 | return EFI_NOT_STARTED;\r | |
84 | }\r | |
85 | \r | |
86 | Status = EFI_DEVICE_ERROR;\r | |
87 | \r | |
88 | if (!Private->UsingIpv6) {\r | |
89 | Status = HttpBootDhcp4Dora (Private);\r | |
90 | } else {\r | |
91 | ASSERT (FALSE);\r | |
92 | }\r | |
93 | \r | |
94 | return Status;\r | |
95 | }\r | |
96 | \r | |
97 | /**\r | |
98 | Attempt to download the boot file through HTTP message exchange.\r | |
99 | \r | |
100 | @param[in] Private The pointer to the driver's private data.\r | |
101 | @param[in, out] BufferSize On input the size of Buffer in bytes. On output with a return\r | |
102 | code of EFI_SUCCESS, the amount of data transferred to\r | |
103 | Buffer. On output with a return code of EFI_BUFFER_TOO_SMALL,\r | |
104 | the size of Buffer required to retrieve the requested file.\r | |
105 | @param[in] Buffer The memory buffer to transfer the file to. If Buffer is NULL,\r | |
106 | then the size of the requested file is returned in\r | |
107 | BufferSize.\r | |
108 | \r | |
109 | @retval EFI_SUCCESS Boot file was loaded successfully.\r | |
110 | @retval EFI_INVALID_PARAMETER Private is NULL.\r | |
111 | @retval EFI_NOT_STARTED The driver is in stopped state.\r | |
112 | @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the boot file. BufferSize has \r | |
113 | been updated with the size needed to complete the request.\r | |
114 | @retval EFI_DEVICE_ERROR An unexpected network error occurred.\r | |
115 | @retval Others Other errors as indicated.\r | |
116 | \r | |
117 | **/\r | |
118 | EFI_STATUS\r | |
119 | HttpBootLoadFile (\r | |
120 | IN HTTP_BOOT_PRIVATE_DATA *Private,\r | |
121 | IN OUT UINTN *BufferSize,\r | |
122 | IN VOID *Buffer OPTIONAL\r | |
123 | )\r | |
124 | {\r | |
125 | EFI_STATUS Status;\r | |
126 | \r | |
127 | if (Private == NULL) {\r | |
128 | return EFI_INVALID_PARAMETER;\r | |
129 | }\r | |
130 | \r | |
131 | if (!Private->Started) {\r | |
132 | return EFI_NOT_STARTED;\r | |
133 | }\r | |
134 | \r | |
135 | Status = EFI_DEVICE_ERROR;\r | |
136 | \r | |
137 | if (Private->BootFileUri == NULL) {\r | |
138 | //\r | |
139 | // Parse the cached offer to get the boot file URL first.\r | |
140 | //\r | |
141 | Status = HttpBootDiscoverBootInfo (Private);\r | |
142 | if (EFI_ERROR (Status)) {\r | |
143 | return Status;\r | |
144 | }\r | |
145 | }\r | |
146 | \r | |
147 | if (!Private->HttpCreated) {\r | |
148 | //\r | |
149 | // Create HTTP child.\r | |
150 | //\r | |
151 | Status = HttpBootCreateHttpIo (Private);\r | |
152 | if (EFI_ERROR (Status)) {\r | |
153 | return Status;\r | |
154 | }\r | |
155 | }\r | |
156 | \r | |
157 | if (Private->BootFileSize == 0) {\r | |
158 | //\r | |
159 | // Discover the information about the bootfile if we haven't.\r | |
160 | //\r | |
161 | \r | |
162 | //\r | |
163 | // Try to use HTTP HEAD method.\r | |
164 | //\r | |
165 | Status = HttpBootGetBootFile (\r | |
166 | Private,\r | |
167 | TRUE,\r | |
168 | &Private->BootFileSize,\r | |
169 | NULL\r | |
170 | );\r | |
171 | if (EFI_ERROR (Status) && Status != EFI_BUFFER_TOO_SMALL) {\r | |
172 | //\r | |
173 | // Failed to get file size by HEAD method, may be trunked encoding, try HTTP GET method.\r | |
174 | //\r | |
175 | ASSERT (Private->BootFileSize == 0);\r | |
176 | Status = HttpBootGetBootFile (\r | |
177 | Private,\r | |
178 | FALSE,\r | |
179 | &Private->BootFileSize,\r | |
180 | NULL\r | |
181 | );\r | |
182 | if (EFI_ERROR (Status) && Status != EFI_BUFFER_TOO_SMALL) {\r | |
183 | return Status;\r | |
184 | }\r | |
185 | }\r | |
186 | }\r | |
187 | \r | |
188 | if (*BufferSize < Private->BootFileSize) {\r | |
189 | *BufferSize = Private->BootFileSize;\r | |
190 | return EFI_BUFFER_TOO_SMALL;\r | |
191 | }\r | |
192 | \r | |
193 | //\r | |
194 | // Load the boot file into Buffer\r | |
195 | //\r | |
196 | return HttpBootGetBootFile (\r | |
197 | Private,\r | |
198 | FALSE,\r | |
199 | BufferSize,\r | |
200 | Buffer\r | |
201 | );\r | |
202 | }\r | |
203 | \r | |
204 | /**\r | |
205 | Disable the use of UEFI HTTP boot function.\r | |
206 | \r | |
207 | @param[in] Private The pointer to the driver's private data.\r | |
208 | \r | |
209 | @retval EFI_SUCCESS HTTP boot was successfully disabled.\r | |
210 | @retval EFI_NOT_STARTED The driver is already in stopped state.\r | |
211 | @retval EFI_INVALID_PARAMETER Private is NULL.\r | |
212 | @retval Others Unexpected error when stop the function.\r | |
213 | \r | |
214 | **/\r | |
215 | EFI_STATUS\r | |
216 | HttpBootStop (\r | |
217 | IN HTTP_BOOT_PRIVATE_DATA *Private\r | |
218 | )\r | |
219 | {\r | |
220 | UINTN Index;\r | |
221 | \r | |
222 | if (Private == NULL) {\r | |
223 | return EFI_INVALID_PARAMETER;\r | |
224 | }\r | |
225 | \r | |
226 | if (!Private->Started) {\r | |
227 | return EFI_NOT_STARTED;\r | |
228 | }\r | |
229 | \r | |
230 | if (Private->HttpCreated) {\r | |
231 | HttpIoDestroyIo (&Private->HttpIo);\r | |
232 | Private->HttpCreated = FALSE;\r | |
233 | }\r | |
234 | \r | |
235 | Private->Started = FALSE;\r | |
236 | ZeroMem (&Private->StationIp, sizeof (EFI_IP_ADDRESS));\r | |
237 | ZeroMem (&Private->SubnetMask, sizeof (EFI_IP_ADDRESS));\r | |
238 | ZeroMem (&Private->GatewayIp, sizeof (EFI_IP_ADDRESS));\r | |
239 | Private->Port = 0;\r | |
240 | Private->BootFileUri = NULL;\r | |
241 | Private->BootFileUriParser = NULL;\r | |
242 | Private->BootFileSize = 0;\r | |
243 | Private->SelectIndex = 0;\r | |
244 | Private->SelectProxyType = HttpOfferTypeMax;\r | |
245 | \r | |
246 | if (!Private->UsingIpv6) {\r | |
247 | //\r | |
248 | // Stop and release the DHCP4 child.\r | |
249 | //\r | |
250 | Private->Dhcp4->Stop (Private->Dhcp4);\r | |
251 | Private->Dhcp4->Configure (Private->Dhcp4, NULL);\r | |
252 | \r | |
253 | for (Index = 0; Index < HTTP_BOOT_OFFER_MAX_NUM; Index++) {\r | |
254 | if (Private->OfferBuffer[Index].Dhcp4.UriParser) {\r | |
255 | HttpUrlFreeParser (Private->OfferBuffer[Index].Dhcp4.UriParser);\r | |
256 | }\r | |
257 | }\r | |
258 | } else {\r | |
259 | ASSERT (FALSE);\r | |
260 | }\r | |
261 | \r | |
262 | ZeroMem (Private->OfferBuffer, sizeof (Private->OfferBuffer));\r | |
263 | Private->OfferNum = 0;\r | |
264 | ZeroMem (Private->OfferCount, sizeof (Private->OfferCount));\r | |
265 | ZeroMem (Private->OfferIndex, sizeof (Private->OfferIndex));\r | |
266 | \r | |
267 | return EFI_SUCCESS;\r | |
268 | }\r | |
269 | \r | |
270 | /**\r | |
271 | Causes the driver to load a specified file.\r | |
272 | \r | |
273 | @param This Protocol instance pointer.\r | |
274 | @param FilePath The device specific path of the file to load.\r | |
275 | @param BootPolicy If TRUE, indicates that the request originates from the\r | |
276 | boot manager is attempting to load FilePath as a boot\r | |
277 | selection. If FALSE, then FilePath must match as exact file\r | |
278 | to be loaded.\r | |
279 | @param BufferSize On input the size of Buffer in bytes. On output with a return\r | |
280 | code of EFI_SUCCESS, the amount of data transferred to\r | |
281 | Buffer. On output with a return code of EFI_BUFFER_TOO_SMALL,\r | |
282 | the size of Buffer required to retrieve the requested file.\r | |
283 | @param Buffer The memory buffer to transfer the file to. IF Buffer is NULL,\r | |
284 | then the size of the requested file is returned in\r | |
285 | BufferSize.\r | |
286 | \r | |
287 | @retval EFI_SUCCESS The file was loaded.\r | |
288 | @retval EFI_UNSUPPORTED The device does not support the provided BootPolicy\r | |
289 | @retval EFI_INVALID_PARAMETER FilePath is not a valid device path, or\r | |
290 | BufferSize is NULL.\r | |
291 | @retval EFI_NO_MEDIA No medium was present to load the file.\r | |
292 | @retval EFI_DEVICE_ERROR The file was not loaded due to a device error.\r | |
293 | @retval EFI_NO_RESPONSE The remote system did not respond.\r | |
294 | @retval EFI_NOT_FOUND The file was not found.\r | |
295 | @retval EFI_ABORTED The file load process was manually cancelled.\r | |
296 | @retval EFI_BUFFER_TOO_SMALL The BufferSize is too small to read the current directory entry.\r | |
297 | BufferSize has been updated with the size needed to complete\r | |
298 | the request.\r | |
299 | \r | |
300 | **/\r | |
301 | EFI_STATUS\r | |
302 | EFIAPI\r | |
303 | HttpBootDxeLoadFile (\r | |
304 | IN EFI_LOAD_FILE_PROTOCOL *This,\r | |
305 | IN EFI_DEVICE_PATH_PROTOCOL *FilePath,\r | |
306 | IN BOOLEAN BootPolicy,\r | |
307 | IN OUT UINTN *BufferSize,\r | |
308 | IN VOID *Buffer OPTIONAL\r | |
309 | )\r | |
310 | {\r | |
311 | HTTP_BOOT_PRIVATE_DATA *Private;\r | |
312 | BOOLEAN MediaPresent;\r | |
313 | EFI_STATUS Status;\r | |
314 | \r | |
315 | if (This == NULL || BufferSize == NULL) {\r | |
316 | return EFI_INVALID_PARAMETER;\r | |
317 | }\r | |
318 | \r | |
319 | //\r | |
320 | // Only support BootPolicy\r | |
321 | //\r | |
322 | if (!BootPolicy) {\r | |
323 | return EFI_UNSUPPORTED;\r | |
324 | }\r | |
325 | \r | |
326 | Private = HTTP_BOOT_PRIVATE_DATA_FROM_LOADFILE (This);\r | |
327 | \r | |
328 | //\r | |
329 | // Check media status before HTTP boot start\r | |
330 | //\r | |
331 | MediaPresent = TRUE;\r | |
332 | NetLibDetectMedia (Private->Controller, &MediaPresent);\r | |
333 | if (!MediaPresent) {\r | |
334 | return EFI_NO_MEDIA;\r | |
335 | }\r | |
336 | \r | |
337 | //\r | |
338 | // Initialize HTTP boot and load the boot file.\r | |
339 | //\r | |
340 | Status = HttpBootStart (Private);\r | |
341 | if (Status == EFI_SUCCESS || Status == EFI_ALREADY_STARTED) {\r | |
342 | Status = HttpBootLoadFile (Private, BufferSize, Buffer);\r | |
343 | }\r | |
344 | \r | |
345 | if (Status != EFI_SUCCESS && Status != EFI_BUFFER_TOO_SMALL) {\r | |
346 | HttpBootStop (Private);\r | |
347 | } else {\r | |
348 | //\r | |
349 | // Stop and release the DHCP4 child.\r | |
350 | //\r | |
351 | Private->Dhcp4->Stop (Private->Dhcp4);\r | |
352 | Private->Dhcp4->Configure (Private->Dhcp4, NULL);\r | |
353 | }\r | |
354 | \r | |
355 | return Status;\r | |
356 | }\r | |
357 | \r | |
358 | ///\r | |
359 | /// Load File Protocol instance\r | |
360 | ///\r | |
361 | GLOBAL_REMOVE_IF_UNREFERENCED \r | |
362 | EFI_LOAD_FILE_PROTOCOL gHttpBootDxeLoadFile = {\r | |
363 | HttpBootDxeLoadFile\r | |
364 | };\r |