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1 | /** @file\r |
2 | Mtftp6 option parse functions implementation.\r | |
3 | \r | |
4 | Copyright (c) 2009 - 2010, Intel Corporation. All rights reserved.<BR>\r | |
5 | \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 "Mtftp6Impl.h"\r | |
17 | \r | |
18 | CHAR8 *mMtftp6SupportedOptions[MTFTP6_SUPPORTED_OPTIONS_NUM] = {\r | |
19 | "blksize",\r | |
20 | "timeout",\r | |
21 | "tsize",\r | |
22 | "multicast"\r | |
23 | };\r | |
24 | \r | |
25 | \r | |
26 | /**\r | |
27 | Parse the NULL terminated ASCII string of multicast option.\r | |
28 | \r | |
29 | @param[in] Str The pointer to the Ascii string of multicast option.\r | |
30 | @param[in] ExtInfo The pointer to the option information to be filled.\r | |
31 | \r | |
32 | @retval EFI_SUCCESS Parse the multicast option successfully.\r | |
33 | @retval EFI_INVALID_PARAMETER The string is malformatted.\r | |
34 | @retval EFI_OUT_OF_RESOURCES Failed to perform the operation due to lack of\r | |
35 | resources.\r | |
36 | \r | |
37 | **/\r | |
38 | EFI_STATUS\r | |
39 | Mtftp6ParseMcastOption (\r | |
40 | IN UINT8 *Str,\r | |
41 | IN MTFTP6_EXT_OPTION_INFO *ExtInfo\r | |
42 | )\r | |
43 | {\r | |
44 | EFI_STATUS Status;\r | |
45 | UINT32 Num;\r | |
46 | CHAR8 *Ip6Str;\r | |
47 | CHAR8 *TempStr;\r | |
48 | \r | |
49 | //\r | |
50 | // The multicast option is formated like "addr,port,mc"\r | |
51 | // The server can also omit the ip and port, use ",,1"\r | |
52 | //\r | |
53 | if (*Str == ',') {\r | |
54 | \r | |
55 | ZeroMem (&ExtInfo->McastIp, sizeof (EFI_IPv6_ADDRESS));\r | |
56 | } else {\r | |
57 | \r | |
58 | Ip6Str = (CHAR8 *) AllocateCopyPool (AsciiStrSize ((CHAR8 *) Str), Str);\r | |
59 | if (Ip6Str == NULL) {\r | |
60 | return EFI_OUT_OF_RESOURCES;\r | |
61 | }\r | |
62 | \r | |
63 | //\r | |
64 | // The IPv6 address locates before comma in the input Str.\r | |
65 | //\r | |
66 | TempStr = Ip6Str;\r | |
67 | while ((*TempStr != '\0') && (*TempStr != ',')) {\r | |
68 | TempStr++;\r | |
69 | }\r | |
70 | \r | |
71 | *TempStr = '\0';\r | |
72 | \r | |
73 | Status = NetLibAsciiStrToIp6 (Ip6Str, &ExtInfo->McastIp);\r | |
74 | FreePool (Ip6Str);\r | |
75 | \r | |
76 | if (EFI_ERROR (Status)) {\r | |
77 | return Status;\r | |
78 | }\r | |
79 | \r | |
80 | while ((*Str != '\0') && (*Str != ',')) {\r | |
81 | Str++;\r | |
82 | }\r | |
83 | }\r | |
84 | \r | |
85 | if (*Str != ',') {\r | |
86 | return EFI_INVALID_PARAMETER;\r | |
87 | }\r | |
88 | \r | |
89 | Str++;\r | |
90 | \r | |
91 | //\r | |
92 | // Convert the port setting. the server can send us a port number or\r | |
93 | // empty string. such as the port in ",,1"\r | |
94 | //\r | |
95 | if (*Str == ',') {\r | |
96 | \r | |
97 | ExtInfo->McastPort = 0;\r | |
98 | } else {\r | |
99 | \r | |
100 | Num = (UINT32) AsciiStrDecimalToUintn ((CHAR8 *) Str);\r | |
101 | \r | |
102 | if (Num > 65535) {\r | |
103 | return EFI_INVALID_PARAMETER;\r | |
104 | }\r | |
105 | \r | |
106 | ExtInfo->McastPort = (UINT16) Num;\r | |
107 | \r | |
108 | while (NET_IS_DIGIT (*Str)) {\r | |
109 | Str++;\r | |
110 | }\r | |
111 | }\r | |
112 | \r | |
113 | if (*Str != ',') {\r | |
114 | return EFI_INVALID_PARAMETER;\r | |
115 | }\r | |
116 | \r | |
117 | Str++;\r | |
118 | \r | |
119 | //\r | |
120 | // Check the master/slave setting, 1 for master, 0 for slave.\r | |
121 | //\r | |
122 | Num = (UINT32) AsciiStrDecimalToUintn ((CHAR8 *) Str);\r | |
123 | \r | |
124 | if (Num != 0 && Num != 1) {\r | |
125 | return EFI_INVALID_PARAMETER;\r | |
126 | }\r | |
127 | \r | |
128 | ExtInfo->IsMaster = (BOOLEAN) (Num == 1);\r | |
129 | \r | |
130 | while (NET_IS_DIGIT (*Str)) {\r | |
131 | Str++;\r | |
132 | }\r | |
133 | \r | |
134 | if (*Str != '\0') {\r | |
135 | return EFI_INVALID_PARAMETER;\r | |
136 | }\r | |
137 | \r | |
138 | return EFI_SUCCESS;\r | |
139 | }\r | |
140 | \r | |
141 | \r | |
142 | /**\r | |
143 | Parse the MTFTP6 extesion options.\r | |
144 | \r | |
145 | @param[in] Options The pointer to the extension options list.\r | |
146 | @param[in] Count The num of the extension options.\r | |
147 | @param[in] IsRequest If FALSE, the extension options is included\r | |
148 | by a request packet.\r | |
149 | @param[in] ExtInfo The pointer to the option information to be filled.\r | |
150 | \r | |
151 | @retval EFI_SUCCESS Parse the multicast option successfully.\r | |
152 | @retval EFI_INVALID_PARAMETER There is one option is malformatted at least.\r | |
153 | @retval EFI_UNSUPPORTED There is one option is not supported at least.\r | |
154 | \r | |
155 | **/\r | |
156 | EFI_STATUS\r | |
157 | Mtftp6ParseExtensionOption (\r | |
158 | IN EFI_MTFTP6_OPTION *Options,\r | |
159 | IN UINT32 Count,\r | |
160 | IN BOOLEAN IsRequest,\r | |
161 | IN MTFTP6_EXT_OPTION_INFO *ExtInfo\r | |
162 | )\r | |
163 | {\r | |
164 | EFI_STATUS Status;\r | |
165 | EFI_MTFTP6_OPTION *Opt;\r | |
166 | UINT32 Index;\r | |
167 | UINT32 Value;\r | |
168 | \r | |
169 | ExtInfo->BitMap = 0;\r | |
170 | \r | |
171 | for (Index = 0; Index < Count; Index++) {\r | |
172 | \r | |
173 | Opt = Options + Index;\r | |
174 | \r | |
175 | if (Opt->OptionStr == NULL || Opt->ValueStr == NULL) {\r | |
176 | return EFI_INVALID_PARAMETER;\r | |
177 | }\r | |
178 | \r | |
179 | if (AsciiStriCmp ((CHAR8 *) Opt->OptionStr, "blksize") == 0) {\r | |
180 | //\r | |
181 | // block size option, valid value is between [8, 65464]\r | |
182 | //\r | |
183 | Value = (UINT32) AsciiStrDecimalToUintn ((CHAR8 *) Opt->ValueStr);\r | |
184 | \r | |
185 | if ((Value < 8) || (Value > 65464)) {\r | |
186 | return EFI_INVALID_PARAMETER;\r | |
187 | }\r | |
188 | \r | |
189 | ExtInfo->BlkSize = (UINT16) Value;\r | |
190 | ExtInfo->BitMap |= MTFTP6_OPT_BLKSIZE_BIT;\r | |
191 | \r | |
192 | } else if (AsciiStriCmp ((CHAR8 *) Opt->OptionStr, "timeout") == 0) {\r | |
193 | //\r | |
194 | // timeout option, valid value is between [1, 255]\r | |
195 | //\r | |
196 | Value = (UINT32) AsciiStrDecimalToUintn ((CHAR8 *) Opt->ValueStr);\r | |
197 | \r | |
198 | if (Value < 1 || Value > 255) {\r | |
199 | return EFI_INVALID_PARAMETER;\r | |
200 | }\r | |
201 | \r | |
202 | ExtInfo->Timeout = (UINT8) Value;\r | |
203 | ExtInfo->BitMap |= MTFTP6_OPT_TIMEOUT_BIT;\r | |
204 | \r | |
205 | } else if (AsciiStriCmp ((CHAR8 *) Opt->OptionStr, "tsize") == 0) {\r | |
206 | //\r | |
207 | // tsize option, the biggest transfer supported is 4GB with block size option\r | |
208 | //\r | |
209 | ExtInfo->Tsize = (UINT32) AsciiStrDecimalToUintn ((CHAR8 *) Opt->ValueStr);\r | |
210 | ExtInfo->BitMap |= MTFTP6_OPT_TSIZE_BIT;\r | |
211 | \r | |
212 | } else if (AsciiStriCmp ((CHAR8 *) Opt->OptionStr, "multicast") == 0) {\r | |
213 | //\r | |
214 | // Multicast option, if it is a request, the value must be a zero string,\r | |
215 | // otherwise, it must be like "addr,port,mc" string, mc indicates master.\r | |
216 | //\r | |
217 | if (!IsRequest) {\r | |
218 | \r | |
219 | Status = Mtftp6ParseMcastOption (Opt->ValueStr, ExtInfo);\r | |
220 | \r | |
221 | if (EFI_ERROR (Status)) {\r | |
222 | return Status;\r | |
223 | }\r | |
224 | } else if (*(Opt->ValueStr) != '\0') {\r | |
225 | \r | |
226 | return EFI_INVALID_PARAMETER;\r | |
227 | }\r | |
228 | \r | |
229 | ExtInfo->BitMap |= MTFTP6_OPT_MCAST_BIT;\r | |
230 | \r | |
231 | } else if (IsRequest) {\r | |
232 | //\r | |
233 | // If it's a request, unsupported; else if it's a reply, ignore.\r | |
234 | //\r | |
235 | return EFI_UNSUPPORTED;\r | |
236 | }\r | |
237 | }\r | |
238 | \r | |
239 | return EFI_SUCCESS;\r | |
240 | }\r | |
241 | \r | |
242 | \r | |
243 | /**\r | |
244 | Go through the packet to fill the options array with the start\r | |
245 | addresses of each MTFTP option name/value pair.\r | |
246 | \r | |
247 | @param[in] Packet The packet to be checked.\r | |
248 | @param[in] PacketLen The length of the packet.\r | |
249 | @param[in, out] Count The num of the Options on input.\r | |
250 | The actual one on output.\r | |
251 | @param[in] Options The option array to be filled.\r | |
252 | It is optional.\r | |
253 | \r | |
254 | @retval EFI_SUCCESS The packet has been parsed successfully.\r | |
255 | @retval EFI_INVALID_PARAMETER The packet is malformatted.\r | |
256 | @retval EFI_BUFFER_TOO_SMALL The Options array is too small.\r | |
257 | @retval EFI_PROTOCOL_ERROR An unexpected MTFTPv6 packet was received.\r | |
258 | \r | |
259 | **/\r | |
260 | EFI_STATUS\r | |
261 | Mtftp6ParsePacketOption (\r | |
262 | IN EFI_MTFTP6_PACKET *Packet,\r | |
263 | IN UINT32 PacketLen,\r | |
264 | IN OUT UINT32 *Count,\r | |
265 | IN EFI_MTFTP6_OPTION *Options OPTIONAL\r | |
266 | )\r | |
267 | {\r | |
268 | UINT8 *Cur;\r | |
269 | UINT8 *Last;\r | |
270 | UINT8 Num;\r | |
271 | UINT8 *Name;\r | |
272 | UINT8 *Value;\r | |
273 | \r | |
274 | Num = 0;\r | |
275 | Cur = (UINT8 *) Packet + MTFTP6_OPCODE_LEN;\r | |
276 | Last = (UINT8 *) Packet + PacketLen - 1;\r | |
277 | \r | |
278 | //\r | |
279 | // process option name and value pairs.\r | |
280 | // The last byte is always zero.\r | |
281 | //\r | |
282 | while (Cur < Last) {\r | |
283 | Name = Cur;\r | |
284 | \r | |
285 | while (*Cur != 0) {\r | |
286 | Cur++;\r | |
287 | }\r | |
288 | \r | |
289 | if (Cur == Last) {\r | |
290 | return EFI_PROTOCOL_ERROR;\r | |
291 | }\r | |
292 | \r | |
293 | Value = ++Cur;\r | |
294 | \r | |
295 | while (*Cur != 0) {\r | |
296 | Cur++;\r | |
297 | }\r | |
298 | \r | |
299 | Num++;\r | |
300 | \r | |
301 | if (Options != NULL && Num <= *Count) {\r | |
302 | Options[Num - 1].OptionStr = Name;\r | |
303 | Options[Num - 1].ValueStr = Value;\r | |
304 | }\r | |
305 | \r | |
306 | Cur++;\r | |
307 | }\r | |
308 | \r | |
309 | //\r | |
310 | // Return buffer too small if the buffer passed-in isn't enough.\r | |
311 | //\r | |
312 | if (*Count < Num || Options == NULL) {\r | |
313 | *Count = Num;\r | |
314 | return EFI_BUFFER_TOO_SMALL;\r | |
315 | }\r | |
316 | \r | |
317 | *Count = Num;\r | |
318 | return EFI_SUCCESS;\r | |
319 | }\r | |
320 | \r | |
321 | \r | |
322 | /**\r | |
323 | Go through the packet, generate option list array and fill it\r | |
324 | by the result of parse options.\r | |
325 | \r | |
326 | @param[in] Packet The packet to be checked.\r | |
327 | @param[in] PacketLen The length of the packet.\r | |
328 | @param[in, out] OptionCount The num of the Options on input.\r | |
329 | The actual one on output.\r | |
330 | @param[out] OptionList The option list array to be generated\r | |
331 | and filled. It is optional.\r | |
332 | \r | |
333 | @retval EFI_SUCCESS The packet has been parsed successfully.\r | |
334 | @retval EFI_INVALID_PARAMETER The packet is malformatted.\r | |
335 | @retval EFI_PROTOCOL_ERROR There is one option is malformatted at least.\r | |
336 | @retval EFI_NOT_FOUND The packet has no options.\r | |
337 | @retval EFI_OUT_OF_RESOURCES Failed to allocate memory for the array.\r | |
338 | @retval EFI_BUFFER_TOO_SMALL The size of option list array is too small.\r | |
339 | \r | |
340 | **/\r | |
341 | EFI_STATUS\r | |
342 | Mtftp6ParseStart (\r | |
343 | IN EFI_MTFTP6_PACKET *Packet,\r | |
344 | IN UINT32 PacketLen,\r | |
345 | IN OUT UINT32 *OptionCount,\r | |
346 | OUT EFI_MTFTP6_OPTION **OptionList OPTIONAL\r | |
347 | )\r | |
348 | {\r | |
349 | EFI_STATUS Status;\r | |
350 | \r | |
351 | if (PacketLen == 0 || Packet == NULL || OptionCount == NULL) {\r | |
352 | return EFI_INVALID_PARAMETER;\r | |
353 | }\r | |
354 | \r | |
355 | *OptionCount = 0;\r | |
356 | \r | |
357 | if (OptionList != NULL) {\r | |
358 | *OptionList = NULL;\r | |
359 | }\r | |
360 | \r | |
361 | if (NTOHS (Packet->OpCode) != EFI_MTFTP6_OPCODE_OACK) {\r | |
362 | return EFI_INVALID_PARAMETER;\r | |
363 | }\r | |
364 | \r | |
365 | //\r | |
366 | // The last byte must be zero to terminate the options.\r | |
367 | //\r | |
368 | if (*((UINT8 *) Packet + PacketLen - 1) != 0) {\r | |
369 | return EFI_PROTOCOL_ERROR;\r | |
370 | }\r | |
371 | \r | |
372 | //\r | |
373 | // Parse packet with NULL buffer for the first time to get the number\r | |
374 | // of options in the packet.\r | |
375 | //\r | |
376 | Status = Mtftp6ParsePacketOption (Packet, PacketLen, OptionCount, NULL);\r | |
377 | \r | |
378 | if (Status != EFI_BUFFER_TOO_SMALL) {\r | |
379 | return Status;\r | |
380 | }\r | |
381 | \r | |
382 | //\r | |
383 | // Return not found if there is no option parsed.\r | |
384 | //\r | |
385 | if (*OptionCount == 0) {\r | |
386 | return EFI_NOT_FOUND;\r | |
387 | }\r | |
388 | \r | |
389 | //\r | |
390 | // Only need parse out the number of options.\r | |
391 | //\r | |
392 | if (OptionList == NULL) {\r | |
393 | return EFI_SUCCESS;\r | |
394 | }\r | |
395 | \r | |
396 | //\r | |
397 | // Allocate the buffer according to the option number parsed before.\r | |
398 | //\r | |
399 | *OptionList = AllocateZeroPool (*OptionCount * sizeof (EFI_MTFTP6_OPTION));\r | |
400 | \r | |
401 | if (*OptionList == NULL) {\r | |
402 | return EFI_OUT_OF_RESOURCES;\r | |
403 | }\r | |
404 | \r | |
405 | //\r | |
406 | // Parse packet with allocated buffer for the second time to fill the pointer array\r | |
407 | // of the options in the packet.\r | |
408 | //\r | |
409 | Status = Mtftp6ParsePacketOption (Packet, PacketLen, OptionCount, *OptionList);\r | |
410 | \r | |
411 | if (EFI_ERROR (Status)) {\r | |
412 | return Status;\r | |
413 | }\r | |
414 | \r | |
415 | return EFI_SUCCESS;\r | |
416 | }\r |