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772db4bb | 1 | /** @file\r |
2 | \r | |
3 | Copyright (c) 2006, Intel Corporation\r | |
4 | All rights reserved. This program and the accompanying materials\r | |
5 | are licensed and made available under the terms and conditions of the BSD License\r | |
6 | which accompanies this distribution. The full text of the license may be found at\r | |
7 | http://opensource.org/licenses/bsd-license.php\r | |
8 | \r | |
9 | THE PROGRAM IS DISTRIBUTED UNDER THE BSD LICENSE ON AN "AS IS" BASIS,\r | |
10 | WITHOUT WARRANTIES OR REPRESENTATIONS OF ANY KIND, EITHER EXPRESS OR IMPLIED.\r | |
11 | \r | |
12 | Module Name:\r | |
13 | \r | |
14 | Mtftp4Option.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | routines to process MTFTP4 options\r | |
18 | \r | |
19 | \r | |
20 | **/\r | |
21 | \r | |
22 | #include "Mtftp4Impl.h"\r | |
23 | \r | |
24 | UINT8 *mMtftp4SupportedOptions[MTFTP4_SUPPORTED_OPTIONS] = {\r | |
25 | "blksize",\r | |
26 | "timeout",\r | |
27 | "tsize",\r | |
28 | "multicast"\r | |
29 | };\r | |
30 | \r | |
31 | \r | |
32 | /**\r | |
33 | Go through the packet to fill the Options array with the start\r | |
34 | addresses of each MTFTP option name/value pair.\r | |
35 | \r | |
36 | @param Packet The packet to check\r | |
37 | @param PacketLen The packet's length\r | |
38 | @param Count The size of the Options on input. The actual\r | |
39 | options on output\r | |
40 | @param Options The option array to fill in\r | |
41 | \r | |
42 | @retval EFI_INVALID_PARAMETER The packet is mal-formated\r | |
43 | @retval EFI_BUFFER_TOO_SMALL The Options array is too small\r | |
44 | @retval EFI_SUCCESS The packet has been parsed into the Options array.\r | |
45 | \r | |
46 | **/\r | |
47 | STATIC\r | |
48 | EFI_STATUS\r | |
49 | Mtftp4FillOptions (\r | |
50 | IN EFI_MTFTP4_PACKET *Packet,\r | |
51 | IN UINT32 PacketLen,\r | |
52 | IN OUT UINT32 *Count,\r | |
53 | OUT EFI_MTFTP4_OPTION *Options OPTIONAL\r | |
54 | )\r | |
55 | {\r | |
56 | UINT8 *Cur;\r | |
57 | UINT8 *Last;\r | |
58 | UINT8 Num;\r | |
59 | UINT8 *Name;\r | |
60 | UINT8 *Value;\r | |
61 | \r | |
62 | Num = 0;\r | |
63 | Cur = (UINT8 *) Packet + MTFTP4_OPCODE_LEN;\r | |
64 | Last = (UINT8 *) Packet + PacketLen - 1;\r | |
65 | \r | |
66 | //\r | |
67 | // process option name and value pairs. The last byte is always zero\r | |
68 | //\r | |
69 | while (Cur < Last) {\r | |
70 | Name = Cur;\r | |
71 | \r | |
72 | while (*Cur != 0) {\r | |
73 | Cur++;\r | |
74 | }\r | |
75 | \r | |
76 | if (Cur == Last) {\r | |
77 | return EFI_INVALID_PARAMETER;\r | |
78 | }\r | |
79 | \r | |
80 | Value = ++Cur;\r | |
81 | \r | |
82 | while (*Cur != 0) {\r | |
83 | Cur++;\r | |
84 | }\r | |
85 | \r | |
86 | Num++;\r | |
87 | \r | |
88 | if ((Options != NULL) && (Num <= *Count)) {\r | |
89 | Options[Num - 1].OptionStr = Name;\r | |
90 | Options[Num - 1].ValueStr = Value;\r | |
91 | }\r | |
92 | \r | |
93 | Cur++;\r | |
94 | }\r | |
95 | \r | |
96 | if ((*Count < Num) || (Options == NULL)) {\r | |
97 | *Count = Num;\r | |
98 | return EFI_BUFFER_TOO_SMALL;\r | |
99 | }\r | |
100 | \r | |
101 | *Count = Num;\r | |
102 | return EFI_SUCCESS;\r | |
103 | }\r | |
104 | \r | |
105 | \r | |
106 | /**\r | |
107 | Allocate and fill in a array of Mtftp options from the Packet. It\r | |
108 | first calls Mtftp4FillOption to get the option number, then allocate\r | |
109 | the array, at last, call Mtftp4FillOption again to save the options.\r | |
110 | \r | |
111 | @param Packet The packet to parse\r | |
112 | @param PacketLen The length of the packet\r | |
113 | @param OptionCount The number of options in the packet\r | |
114 | @param OptionList The point to get the option array.\r | |
115 | \r | |
116 | @retval EFI_INVALID_PARAMETER The parametera are invalid or packet isn't a\r | |
117 | well-formated OACK packet.\r | |
118 | @retval EFI_SUCCESS The option array is build\r | |
119 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the array\r | |
120 | \r | |
121 | **/\r | |
122 | EFI_STATUS\r | |
123 | Mtftp4ExtractOptions (\r | |
124 | IN EFI_MTFTP4_PACKET *Packet,\r | |
125 | IN UINT32 PacketLen,\r | |
126 | IN OUT UINT32 *OptionCount,\r | |
127 | OUT EFI_MTFTP4_OPTION **OptionList OPTIONAL\r | |
128 | )\r | |
129 | {\r | |
130 | EFI_STATUS Status;\r | |
131 | \r | |
132 | *OptionCount = 0;\r | |
133 | \r | |
134 | if (OptionList != NULL) {\r | |
135 | *OptionList = NULL;\r | |
136 | }\r | |
137 | \r | |
138 | if (NTOHS (Packet->OpCode) != EFI_MTFTP4_OPCODE_OACK) {\r | |
139 | return EFI_INVALID_PARAMETER;\r | |
140 | }\r | |
141 | \r | |
142 | if (PacketLen == MTFTP4_OPCODE_LEN) {\r | |
143 | return EFI_SUCCESS;\r | |
144 | }\r | |
145 | \r | |
146 | //\r | |
147 | // The last byte must be zero to terminate the options\r | |
148 | //\r | |
149 | if (*((UINT8 *) Packet + PacketLen - 1) != 0) {\r | |
150 | return EFI_INVALID_PARAMETER;\r | |
151 | }\r | |
152 | \r | |
153 | //\r | |
154 | // Get the number of options\r | |
155 | //\r | |
156 | Status = Mtftp4FillOptions (Packet, PacketLen, OptionCount, NULL);\r | |
157 | \r | |
158 | if ((Status == EFI_SUCCESS) || (Status != EFI_BUFFER_TOO_SMALL)) {\r | |
159 | return Status;\r | |
160 | }\r | |
161 | \r | |
162 | //\r | |
163 | // Allocate memory for the options, then call Mtftp4FillOptions to\r | |
164 | // fill it if caller want that.\r | |
165 | //\r | |
166 | if (OptionList == NULL) {\r | |
167 | return EFI_SUCCESS;\r | |
168 | }\r | |
169 | \r | |
170 | *OptionList = NetAllocatePool (*OptionCount * sizeof (EFI_MTFTP4_OPTION));\r | |
171 | \r | |
172 | if (*OptionList == NULL) {\r | |
173 | return EFI_OUT_OF_RESOURCES;\r | |
174 | }\r | |
175 | \r | |
176 | Mtftp4FillOptions (Packet, PacketLen, OptionCount, *OptionList);\r | |
177 | return EFI_SUCCESS;\r | |
178 | }\r | |
179 | \r | |
180 | \r | |
181 | /**\r | |
182 | Check whether two ascii strings are equel, ignore the case.\r | |
183 | \r | |
184 | @param Str1 The first ascii string\r | |
185 | @param Str2 The second ascii string\r | |
186 | \r | |
187 | @retval TRUE Two strings are equal when case is ignored.\r | |
188 | @retval FALSE Two string are not equal.\r | |
189 | \r | |
190 | **/\r | |
191 | BOOLEAN\r | |
192 | NetStringEqualNoCase (\r | |
193 | IN UINT8 *Str1,\r | |
194 | IN UINT8 *Str2\r | |
195 | )\r | |
196 | {\r | |
197 | UINT8 Ch1;\r | |
198 | UINT8 Ch2;\r | |
199 | \r | |
200 | ASSERT ((Str1 != NULL) && (Str2 != NULL));\r | |
201 | \r | |
202 | for (; (*Str1 != '\0') && (*Str2 != '\0'); Str1++, Str2++) {\r | |
203 | Ch1 = *Str1;\r | |
204 | Ch2 = *Str2;\r | |
205 | \r | |
206 | //\r | |
207 | // Convert them to lower case then compare two\r | |
208 | //\r | |
209 | if (('A' <= Ch1) && (Ch1 <= 'Z')) {\r | |
210 | Ch1 += 'a' - 'A';\r | |
211 | }\r | |
212 | \r | |
213 | if (('A' <= Ch2) && (Ch2 <= 'Z')) {\r | |
214 | Ch2 += 'a' - 'A';\r | |
215 | }\r | |
216 | \r | |
217 | if (Ch1 != Ch2) {\r | |
218 | return FALSE;\r | |
219 | }\r | |
220 | }\r | |
221 | \r | |
222 | return (BOOLEAN) (*Str1 == *Str2);\r | |
223 | }\r | |
224 | \r | |
225 | \r | |
226 | /**\r | |
227 | Convert a string to a UINT32 number.\r | |
228 | \r | |
229 | @param Str The string to convert from\r | |
230 | \r | |
231 | @return The number get from the string\r | |
232 | \r | |
233 | **/\r | |
234 | UINT32\r | |
235 | NetStringToU32 (\r | |
236 | IN UINT8 *Str\r | |
237 | )\r | |
238 | {\r | |
239 | UINT32 Num;\r | |
240 | \r | |
241 | ASSERT (Str != NULL);\r | |
242 | \r | |
243 | Num = 0;\r | |
244 | \r | |
245 | for (; NET_IS_DIGIT (*Str); Str++) {\r | |
246 | Num = Num * 10 + (*Str - '0');\r | |
247 | }\r | |
248 | \r | |
249 | return Num;\r | |
250 | }\r | |
251 | \r | |
252 | \r | |
253 | /**\r | |
254 | Convert a string of the format "192.168.0.1" to an IP address.\r | |
255 | \r | |
256 | @param Str The string representation of IP\r | |
257 | @param Ip The varible to get IP.\r | |
258 | \r | |
259 | @retval EFI_INVALID_PARAMETER The IP string is invalid.\r | |
260 | @retval EFI_SUCCESS The IP is parsed into the Ip\r | |
261 | \r | |
262 | **/\r | |
263 | STATIC\r | |
264 | EFI_STATUS\r | |
265 | NetStringToIp (\r | |
266 | IN UINT8 *Str,\r | |
267 | OUT IP4_ADDR *Ip\r | |
268 | )\r | |
269 | {\r | |
270 | UINT32 Byte;\r | |
271 | UINT32 Addr;\r | |
272 | UINTN Index;\r | |
273 | \r | |
274 | *Ip = 0;\r | |
275 | Addr = 0;\r | |
276 | \r | |
277 | for (Index = 0; Index < 4; Index++) {\r | |
278 | if (!NET_IS_DIGIT (*Str)) {\r | |
279 | return EFI_INVALID_PARAMETER;\r | |
280 | }\r | |
281 | \r | |
282 | Byte = NetStringToU32 (Str);\r | |
283 | \r | |
284 | if (Byte > 255) {\r | |
285 | return EFI_INVALID_PARAMETER;\r | |
286 | }\r | |
287 | \r | |
288 | Addr = (Addr << 8) | Byte;\r | |
289 | \r | |
290 | //\r | |
291 | // Skip all the digitals and check whether the sepeator is the dot\r | |
292 | //\r | |
293 | while (NET_IS_DIGIT (*Str)) {\r | |
294 | Str++;\r | |
295 | }\r | |
296 | \r | |
297 | if ((Index < 3) && (*Str != '.')) {\r | |
298 | return EFI_INVALID_PARAMETER;\r | |
299 | }\r | |
300 | \r | |
301 | Str++;\r | |
302 | }\r | |
303 | \r | |
304 | *Ip = Addr;\r | |
305 | \r | |
306 | return EFI_SUCCESS;\r | |
307 | }\r | |
308 | \r | |
309 | \r | |
310 | /**\r | |
311 | Parse the MTFTP multicast option.\r | |
312 | \r | |
313 | @param Value The Mtftp multicast value string\r | |
314 | @param Option The option to save the info into.\r | |
315 | \r | |
316 | @retval EFI_INVALID_PARAMETER The multicast value string is invalid.\r | |
317 | @retval EFI_SUCCESS The multicast value is parsed into the Option\r | |
318 | \r | |
319 | **/\r | |
320 | STATIC\r | |
321 | EFI_STATUS\r | |
322 | Mtftp4ExtractMcast (\r | |
323 | IN UINT8 *Value,\r | |
324 | IN MTFTP4_OPTION *Option\r | |
325 | )\r | |
326 | {\r | |
327 | EFI_STATUS Status;\r | |
328 | UINT32 Num;\r | |
329 | \r | |
330 | //\r | |
331 | // The multicast option is formated like "204.0.0.1,1857,1"\r | |
332 | // The server can also omit the ip and port, use ",,1"\r | |
333 | //\r | |
334 | if (*Value == ',') {\r | |
335 | Option->McastIp = 0;\r | |
336 | } else {\r | |
337 | Status = NetStringToIp (Value, &Option->McastIp);\r | |
338 | \r | |
339 | if (EFI_ERROR (Status)) {\r | |
340 | return Status;\r | |
341 | }\r | |
342 | \r | |
343 | while (*Value && (*Value != ',')) {\r | |
344 | Value++;\r | |
345 | }\r | |
346 | }\r | |
347 | \r | |
348 | if (*Value != ',') {\r | |
349 | return EFI_INVALID_PARAMETER;\r | |
350 | }\r | |
351 | \r | |
352 | Value++;\r | |
353 | \r | |
354 | //\r | |
355 | // Convert the port setting. the server can send us a port number or\r | |
356 | // empty string. such as the port in ",,1"\r | |
357 | //\r | |
358 | if (*Value == ',') {\r | |
359 | Option->McastPort = 0;\r | |
360 | } else {\r | |
361 | Num = NetStringToU32 (Value);\r | |
362 | \r | |
363 | if (Num > 65535) {\r | |
364 | return EFI_INVALID_PARAMETER;\r | |
365 | }\r | |
366 | \r | |
367 | Option->McastPort = (UINT16)Num;\r | |
368 | \r | |
369 | while (NET_IS_DIGIT (*Value)) {\r | |
370 | Value++;\r | |
371 | }\r | |
372 | }\r | |
373 | \r | |
374 | if (*Value != ',') {\r | |
375 | return EFI_INVALID_PARAMETER;\r | |
376 | }\r | |
377 | \r | |
378 | Value++;\r | |
379 | \r | |
380 | //\r | |
381 | // Check the master/slave setting, 1 for master, 0 for slave.\r | |
382 | //\r | |
383 | Num = NetStringToU32 (Value);\r | |
384 | \r | |
385 | if ((Num != 0) && (Num != 1)) {\r | |
386 | return EFI_INVALID_PARAMETER;\r | |
387 | }\r | |
388 | \r | |
389 | Option->Master = (BOOLEAN)(Num == 1);\r | |
390 | \r | |
391 | while (NET_IS_DIGIT (*Value)) {\r | |
392 | Value++;\r | |
393 | }\r | |
394 | \r | |
395 | if (*Value != '\0') {\r | |
396 | return EFI_INVALID_PARAMETER;\r | |
397 | }\r | |
398 | \r | |
399 | return EFI_SUCCESS;\r | |
400 | }\r | |
401 | \r | |
402 | \r | |
403 | /**\r | |
404 | Parse the option in Options array to MTFTP4_OPTION which program\r | |
405 | can access directly.\r | |
406 | \r | |
407 | @param Options The option array, which contains addresses of each\r | |
408 | option's name/value string.\r | |
409 | @param Count The number of options in the Options\r | |
410 | @param Request Whether this is a request or OACK. The format of\r | |
411 | multicast is different according to this setting.\r | |
412 | @param MtftpOption The MTFTP4_OPTION for easy access.\r | |
413 | \r | |
414 | @retval EFI_INVALID_PARAMETER The option is mal-formated\r | |
415 | @retval EFI_UNSUPPORTED Some option isn't supported\r | |
416 | @retval EFI_SUCCESS The option are OK and has been parsed.\r | |
417 | \r | |
418 | **/\r | |
419 | EFI_STATUS\r | |
420 | Mtftp4ParseOption (\r | |
421 | IN EFI_MTFTP4_OPTION *Options,\r | |
422 | IN UINT32 Count,\r | |
423 | IN BOOLEAN Request,\r | |
424 | OUT MTFTP4_OPTION *MtftpOption\r | |
425 | )\r | |
426 | {\r | |
427 | EFI_STATUS Status;\r | |
428 | UINT32 Index;\r | |
429 | UINT32 Value;\r | |
430 | EFI_MTFTP4_OPTION *This;\r | |
431 | \r | |
432 | MtftpOption->Exist = 0;\r | |
433 | \r | |
434 | for (Index = 0; Index < Count; Index++) {\r | |
435 | This = Options + Index;\r | |
436 | \r | |
437 | if ((This->OptionStr == NULL) || (This->ValueStr == NULL)) {\r | |
438 | return EFI_INVALID_PARAMETER;\r | |
439 | }\r | |
440 | \r | |
441 | if (NetStringEqualNoCase (This->OptionStr, "blksize")) {\r | |
442 | //\r | |
443 | // block size option, valid value is between [8, 65464]\r | |
444 | //\r | |
445 | Value = NetStringToU32 (This->ValueStr);\r | |
446 | \r | |
447 | if ((Value < 8) || (Value > 65464)) {\r | |
448 | return EFI_INVALID_PARAMETER;\r | |
449 | }\r | |
450 | \r | |
451 | MtftpOption->BlkSize = (UINT16) Value;\r | |
452 | MtftpOption->Exist |= MTFTP4_BLKSIZE_EXIST;\r | |
453 | \r | |
454 | } else if (NetStringEqualNoCase (This->OptionStr, "timeout")) {\r | |
455 | //\r | |
456 | // timeout option, valid value is between [1, 255]\r | |
457 | //\r | |
458 | Value = NetStringToU32 (This->ValueStr);\r | |
459 | \r | |
460 | if ((Value < 1) || (Value > 255)) {\r | |
461 | return EFI_INVALID_PARAMETER;\r | |
462 | }\r | |
463 | \r | |
464 | MtftpOption->Timeout = (UINT8) Value;\r | |
465 | \r | |
466 | } else if (NetStringEqualNoCase (This->OptionStr, "tsize")) {\r | |
467 | //\r | |
468 | // tsize option, the biggest transfer supported is 4GB with block size option\r | |
469 | //\r | |
470 | MtftpOption->Tsize = NetStringToU32 (This->ValueStr);\r | |
471 | MtftpOption->Exist |= MTFTP4_TSIZE_EXIST;\r | |
472 | \r | |
473 | } else if (NetStringEqualNoCase (This->OptionStr, "multicast")) {\r | |
474 | //\r | |
475 | // Multicast option, if it is a request, the value must be a zero\r | |
476 | // length string, otherwise, it is formated like "204.0.0.1,1857,1\0"\r | |
477 | //\r | |
478 | if (Request) {\r | |
479 | if (*(This->ValueStr) != '\0') {\r | |
480 | return EFI_INVALID_PARAMETER;\r | |
481 | }\r | |
482 | \r | |
483 | } else {\r | |
484 | Status = Mtftp4ExtractMcast (This->ValueStr, MtftpOption);\r | |
485 | \r | |
486 | if (EFI_ERROR (Status)) {\r | |
487 | return Status;\r | |
488 | }\r | |
489 | }\r | |
490 | \r | |
491 | MtftpOption->Exist |= MTFTP4_MCAST_EXIST;\r | |
492 | \r | |
493 | } else if (Request) {\r | |
494 | //\r | |
495 | // Ignore the unsupported option if it is a reply, and return\r | |
496 | // EFI_UNSUPPORTED if it's a request according to the UEFI spec.\r | |
497 | //\r | |
498 | return EFI_UNSUPPORTED;\r | |
499 | }\r | |
500 | }\r | |
501 | \r | |
502 | return EFI_SUCCESS;\r | |
503 | }\r | |
504 | \r | |
505 | \r | |
506 | /**\r | |
507 | Parse the options in the OACK packet to MTFTP4_OPTION which program\r | |
508 | can access directly.\r | |
509 | \r | |
510 | @param Packet The OACK packet to parse\r | |
511 | @param PacketLen The length of the packet\r | |
512 | @param MtftpOption The MTFTP_OPTION for easy access.\r | |
513 | \r | |
514 | @retval EFI_INVALID_PARAMETER The packet option is mal-formated\r | |
515 | @retval EFI_UNSUPPORTED Some option isn't supported\r | |
516 | @retval EFI_SUCCESS The option are OK and has been parsed.\r | |
517 | \r | |
518 | **/\r | |
519 | EFI_STATUS\r | |
520 | Mtftp4ParseOptionOack (\r | |
521 | IN EFI_MTFTP4_PACKET *Packet,\r | |
522 | IN UINT32 PacketLen,\r | |
523 | OUT MTFTP4_OPTION *MtftpOption\r | |
524 | )\r | |
525 | {\r | |
526 | EFI_MTFTP4_OPTION *OptionList;\r | |
527 | EFI_STATUS Status;\r | |
528 | UINT32 Count;\r | |
529 | \r | |
530 | MtftpOption->Exist = 0;\r | |
531 | \r | |
532 | Status = Mtftp4ExtractOptions (Packet, PacketLen, &Count, &OptionList);\r | |
533 | \r | |
534 | if (EFI_ERROR (Status) || (Count == 0)) {\r | |
535 | return Status;\r | |
536 | }\r | |
537 | \r | |
538 | Status = Mtftp4ParseOption (OptionList, Count, FALSE, MtftpOption);\r | |
539 | \r | |
540 | NetFreePool (OptionList);\r | |
541 | return Status;\r | |
542 | }\r |