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878ddf1f | 1 | /*++\r |
2 | \r | |
3 | Copyright (c) 2004, 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 | ParseInf.c\r | |
15 | \r | |
16 | Abstract:\r | |
17 | \r | |
18 | This contains some useful functions for parsing INF files.\r | |
19 | \r | |
20 | --*/\r | |
21 | \r | |
22 | #include "ParseInf.h"\r | |
23 | #include <assert.h>\r | |
24 | #include <string.h>\r | |
25 | #include <ctype.h>\r | |
26 | #include <stdlib.h>\r | |
27 | \r | |
28 | #ifndef _MAX_PATH\r | |
29 | #define _MAX_PATH 500\r | |
30 | #endif\r | |
31 | \r | |
32 | CHAR8 *\r | |
33 | ReadLine (\r | |
34 | IN MEMORY_FILE *InputFile,\r | |
35 | IN OUT CHAR8 *InputBuffer,\r | |
36 | IN UINTN MaxLength\r | |
37 | )\r | |
38 | /*++\r | |
39 | \r | |
40 | Routine Description:\r | |
41 | \r | |
42 | This function reads a line, stripping any comments.\r | |
43 | The function reads a string from the input stream argument and stores it in \r | |
44 | the input string. ReadLine reads characters from the current file position \r | |
45 | to and including the first newline character, to the end of the stream, or \r | |
46 | until the number of characters read is equal to MaxLength - 1, whichever \r | |
47 | comes first. The newline character, if read, is replaced with a \0. \r | |
48 | \r | |
49 | Arguments:\r | |
50 | \r | |
51 | InputFile Memory file image.\r | |
52 | InputBuffer Buffer to read into, must be _MAX_PATH size.\r | |
53 | MaxLength The maximum size of the input buffer.\r | |
54 | \r | |
55 | Returns:\r | |
56 | \r | |
57 | NULL if error or EOF\r | |
58 | InputBuffer otherwise\r | |
59 | \r | |
60 | --*/\r | |
61 | {\r | |
62 | CHAR8 *CharPtr;\r | |
63 | CHAR8 *EndOfLine;\r | |
64 | UINTN CharsToCopy;\r | |
65 | \r | |
66 | //\r | |
67 | // Verify input parameters are not null\r | |
68 | //\r | |
69 | assert (InputBuffer);\r | |
70 | assert (InputFile->FileImage);\r | |
71 | assert (InputFile->Eof);\r | |
72 | assert (InputFile->CurrentFilePointer);\r | |
73 | \r | |
74 | //\r | |
75 | // Check for end of file condition\r | |
76 | //\r | |
77 | if (InputFile->CurrentFilePointer >= InputFile->Eof) {\r | |
78 | return NULL;\r | |
79 | }\r | |
80 | //\r | |
81 | // Find the next newline char\r | |
82 | //\r | |
83 | EndOfLine = strchr (InputFile->CurrentFilePointer, '\n');\r | |
84 | \r | |
85 | //\r | |
86 | // Determine the number of characters to copy.\r | |
87 | //\r | |
88 | if (EndOfLine == 0) {\r | |
89 | //\r | |
90 | // If no newline found, copy to the end of the file.\r | |
91 | //\r | |
92 | CharsToCopy = InputFile->Eof - InputFile->CurrentFilePointer;\r | |
93 | } else if (EndOfLine >= InputFile->Eof) {\r | |
94 | //\r | |
95 | // If the newline found was beyond the end of file, copy to the eof.\r | |
96 | //\r | |
97 | CharsToCopy = InputFile->Eof - InputFile->CurrentFilePointer;\r | |
98 | } else {\r | |
99 | //\r | |
100 | // Newline found in the file.\r | |
101 | //\r | |
102 | CharsToCopy = EndOfLine - InputFile->CurrentFilePointer;\r | |
103 | }\r | |
104 | //\r | |
105 | // If the end of line is too big for the current buffer, set it to the max\r | |
106 | // size of the buffer (leaving room for the \0.\r | |
107 | //\r | |
108 | if (CharsToCopy > MaxLength - 1) {\r | |
109 | CharsToCopy = MaxLength - 1;\r | |
110 | }\r | |
111 | //\r | |
112 | // Copy the line.\r | |
113 | //\r | |
114 | memcpy (InputBuffer, InputFile->CurrentFilePointer, CharsToCopy);\r | |
115 | \r | |
116 | //\r | |
117 | // Add the null termination over the 0x0D\r | |
118 | //\r | |
119 | InputBuffer[CharsToCopy - 1] = '\0';\r | |
120 | \r | |
121 | //\r | |
122 | // Increment the current file pointer (include the 0x0A)\r | |
123 | //\r | |
124 | InputFile->CurrentFilePointer += CharsToCopy + 1;\r | |
125 | \r | |
126 | //\r | |
127 | // Strip any comments\r | |
128 | //\r | |
129 | CharPtr = strstr (InputBuffer, "//");\r | |
130 | if (CharPtr != 0) {\r | |
131 | CharPtr[0] = 0;\r | |
132 | }\r | |
133 | //\r | |
134 | // Return the string\r | |
135 | //\r | |
136 | return InputBuffer;\r | |
137 | }\r | |
138 | \r | |
139 | BOOLEAN\r | |
140 | FindSection (\r | |
141 | IN MEMORY_FILE *InputFile,\r | |
142 | IN CHAR8 *Section\r | |
143 | )\r | |
144 | /*++\r | |
145 | \r | |
146 | Routine Description:\r | |
147 | \r | |
148 | This function parses a file from the beginning to find a section.\r | |
149 | The section string may be anywhere within a line.\r | |
150 | \r | |
151 | Arguments:\r | |
152 | \r | |
153 | InputFile Memory file image.\r | |
154 | Section Section to search for\r | |
155 | \r | |
156 | Returns:\r | |
157 | \r | |
158 | FALSE if error or EOF\r | |
159 | TRUE if section found\r | |
160 | \r | |
161 | --*/\r | |
162 | {\r | |
163 | CHAR8 InputBuffer[_MAX_PATH];\r | |
164 | CHAR8 *CurrentToken;\r | |
165 | \r | |
166 | //\r | |
167 | // Verify input is not NULL\r | |
168 | //\r | |
169 | assert (InputFile->FileImage);\r | |
170 | assert (InputFile->Eof);\r | |
171 | assert (InputFile->CurrentFilePointer);\r | |
172 | assert (Section);\r | |
173 | \r | |
174 | //\r | |
175 | // Rewind to beginning of file\r | |
176 | //\r | |
177 | InputFile->CurrentFilePointer = InputFile->FileImage;\r | |
178 | \r | |
179 | //\r | |
180 | // Read lines until the section is found\r | |
181 | //\r | |
182 | while (InputFile->CurrentFilePointer < InputFile->Eof) {\r | |
183 | //\r | |
184 | // Read a line\r | |
185 | //\r | |
186 | ReadLine (InputFile, InputBuffer, _MAX_PATH);\r | |
187 | \r | |
188 | //\r | |
189 | // Check if the section is found\r | |
190 | //\r | |
191 | CurrentToken = strstr (InputBuffer, Section);\r | |
192 | if (CurrentToken != NULL) {\r | |
193 | return TRUE;\r | |
194 | }\r | |
195 | }\r | |
196 | \r | |
197 | return FALSE;\r | |
198 | }\r | |
199 | \r | |
200 | EFI_STATUS\r | |
201 | FindToken (\r | |
202 | IN MEMORY_FILE *InputFile,\r | |
203 | IN CHAR8 *Section,\r | |
204 | IN CHAR8 *Token,\r | |
205 | IN UINTN Instance,\r | |
206 | OUT CHAR8 *Value\r | |
207 | )\r | |
208 | /*++\r | |
209 | \r | |
210 | Routine Description:\r | |
211 | \r | |
212 | Finds a token value given the section and token to search for.\r | |
213 | \r | |
214 | Arguments:\r | |
215 | \r | |
216 | InputFile Memory file image.\r | |
217 | Section The section to search for, a string within [].\r | |
218 | Token The token to search for, e.g. EFI_PEIM_RECOVERY, followed by an = in the INF file.\r | |
219 | Instance The instance of the token to search for. Zero is the first instance.\r | |
220 | Value The string that holds the value following the =. Must be _MAX_PATH in size.\r | |
221 | \r | |
222 | Returns:\r | |
223 | \r | |
224 | EFI_SUCCESS Value found.\r | |
225 | EFI_ABORTED Format error detected in INF file.\r | |
226 | EFI_INVALID_PARAMETER Input argument was null.\r | |
227 | EFI_LOAD_ERROR Error reading from the file.\r | |
228 | EFI_NOT_FOUND Section/Token/Value not found.\r | |
229 | \r | |
230 | --*/\r | |
231 | {\r | |
232 | CHAR8 InputBuffer[_MAX_PATH];\r | |
233 | CHAR8 *CurrentToken;\r | |
234 | BOOLEAN ParseError;\r | |
235 | BOOLEAN ReadError;\r | |
236 | UINTN Occurrance;\r | |
237 | \r | |
238 | //\r | |
239 | // Check input parameters\r | |
240 | //\r | |
241 | if (InputFile->FileImage == NULL ||\r | |
242 | InputFile->Eof == NULL ||\r | |
243 | InputFile->CurrentFilePointer == NULL ||\r | |
244 | Section == NULL ||\r | |
245 | strlen (Section) == 0 ||\r | |
246 | Token == NULL ||\r | |
247 | strlen (Token) == 0 ||\r | |
248 | Value == NULL\r | |
249 | ) {\r | |
250 | return EFI_INVALID_PARAMETER;\r | |
251 | }\r | |
252 | //\r | |
253 | // Initialize error codes\r | |
254 | //\r | |
255 | ParseError = FALSE;\r | |
256 | ReadError = FALSE;\r | |
257 | \r | |
258 | //\r | |
259 | // Initialize our instance counter for the search token\r | |
260 | //\r | |
261 | Occurrance = 0;\r | |
262 | \r | |
263 | if (FindSection (InputFile, Section)) {\r | |
264 | //\r | |
265 | // Found the desired section, find and read the desired token\r | |
266 | //\r | |
267 | do {\r | |
268 | //\r | |
269 | // Read a line from the file\r | |
270 | //\r | |
271 | if (ReadLine (InputFile, InputBuffer, _MAX_PATH) == NULL) {\r | |
272 | //\r | |
273 | // Error reading from input file\r | |
274 | //\r | |
275 | ReadError = TRUE;\r | |
276 | break;\r | |
277 | }\r | |
278 | //\r | |
279 | // Get the first non-whitespace string\r | |
280 | //\r | |
281 | CurrentToken = strtok (InputBuffer, " \t\n");\r | |
282 | if (CurrentToken == NULL) {\r | |
283 | //\r | |
284 | // Whitespace line found (or comment) so continue\r | |
285 | //\r | |
286 | CurrentToken = InputBuffer;\r | |
287 | continue;\r | |
288 | }\r | |
289 | //\r | |
290 | // Make sure we have not reached the end of the current section\r | |
291 | //\r | |
292 | if (CurrentToken[0] == '[') {\r | |
293 | break;\r | |
294 | }\r | |
295 | //\r | |
296 | // Compare the current token with the desired token\r | |
297 | //\r | |
298 | if (strcmp (CurrentToken, Token) == 0) {\r | |
299 | //\r | |
300 | // Found it\r | |
301 | //\r | |
302 | //\r | |
303 | // Check if it is the correct instance\r | |
304 | //\r | |
305 | if (Instance == Occurrance) {\r | |
306 | //\r | |
307 | // Copy the contents following the =\r | |
308 | //\r | |
309 | CurrentToken = strtok (NULL, "= \t\n");\r | |
310 | if (CurrentToken == NULL) {\r | |
311 | //\r | |
312 | // Nothing found, parsing error\r | |
313 | //\r | |
314 | ParseError = TRUE;\r | |
315 | } else {\r | |
316 | //\r | |
317 | // Copy the current token to the output value\r | |
318 | //\r | |
319 | strcpy (Value, CurrentToken);\r | |
320 | return EFI_SUCCESS;\r | |
321 | }\r | |
322 | } else {\r | |
323 | //\r | |
324 | // Increment the occurrance found\r | |
325 | //\r | |
326 | Occurrance++;\r | |
327 | }\r | |
328 | }\r | |
329 | } while (\r | |
330 | !ParseError &&\r | |
331 | !ReadError &&\r | |
332 | InputFile->CurrentFilePointer < InputFile->Eof &&\r | |
333 | CurrentToken[0] != '[' &&\r | |
334 | Occurrance <= Instance\r | |
335 | );\r | |
336 | }\r | |
337 | //\r | |
338 | // Distinguish between read errors and INF file format errors.\r | |
339 | //\r | |
340 | if (ReadError) {\r | |
341 | return EFI_LOAD_ERROR;\r | |
342 | }\r | |
343 | \r | |
344 | if (ParseError) {\r | |
345 | return EFI_ABORTED;\r | |
346 | }\r | |
347 | \r | |
348 | return EFI_NOT_FOUND;\r | |
349 | }\r | |
350 | \r | |
351 | EFI_STATUS\r | |
352 | StringToGuid (\r | |
353 | IN CHAR8 *AsciiGuidBuffer,\r | |
354 | OUT EFI_GUID *GuidBuffer\r | |
355 | )\r | |
356 | /*++\r | |
357 | \r | |
358 | Routine Description: \r | |
359 | \r | |
360 | Converts a string to an EFI_GUID. The string must be in the \r | |
361 | xxxxxxxx-xxxx-xxxx-xxxx-xxxxxxxxxxxx format.\r | |
362 | \r | |
363 | Arguments: \r | |
364 | \r | |
365 | AsciiGuidBuffer - pointer to ascii string\r | |
366 | GuidBuffer - pointer to destination Guid\r | |
367 | \r | |
368 | Returns: \r | |
369 | \r | |
370 | EFI_ABORTED Could not convert the string\r | |
371 | EFI_SUCCESS The string was successfully converted\r | |
372 | EFI_INVALID_PARAMETER Input parameter is invalid.\r | |
373 | \r | |
374 | --*/\r | |
375 | {\r | |
376 | INT32 Index;\r | |
377 | UINTN Data1;\r | |
378 | UINTN Data2;\r | |
379 | UINTN Data3;\r | |
380 | UINTN Data4[8];\r | |
381 | \r | |
382 | if (AsciiGuidBuffer == NULL || GuidBuffer == NULL) {\r | |
383 | return EFI_INVALID_PARAMETER;\r | |
384 | }\r | |
385 | //\r | |
386 | // Scan the guid string into the buffer\r | |
387 | //\r | |
388 | Index = sscanf (\r | |
389 | AsciiGuidBuffer,\r | |
390 | "%08x-%04x-%04x-%02x%02x-%02hx%02hx%02hx%02hx%02hx%02hx",\r | |
391 | &Data1,\r | |
392 | &Data2,\r | |
393 | &Data3,\r | |
394 | &Data4[0],\r | |
395 | &Data4[1],\r | |
396 | &Data4[2],\r | |
397 | &Data4[3],\r | |
398 | &Data4[4],\r | |
399 | &Data4[5],\r | |
400 | &Data4[6],\r | |
401 | &Data4[7]\r | |
402 | );\r | |
403 | \r | |
404 | //\r | |
405 | // Verify the correct number of items were scanned.\r | |
406 | //\r | |
407 | if (Index != 11) {\r | |
408 | printf ("ERROR: Malformed GUID \"%s\".\n\n", AsciiGuidBuffer);\r | |
409 | return EFI_ABORTED;\r | |
410 | }\r | |
411 | //\r | |
412 | // Copy the data into our GUID.\r | |
413 | //\r | |
414 | GuidBuffer->Data1 = (UINT32) Data1;\r | |
415 | GuidBuffer->Data2 = (UINT16) Data2;\r | |
416 | GuidBuffer->Data3 = (UINT16) Data3;\r | |
417 | GuidBuffer->Data4[0] = (UINT8) Data4[0];\r | |
418 | GuidBuffer->Data4[1] = (UINT8) Data4[1];\r | |
419 | GuidBuffer->Data4[2] = (UINT8) Data4[2];\r | |
420 | GuidBuffer->Data4[3] = (UINT8) Data4[3];\r | |
421 | GuidBuffer->Data4[4] = (UINT8) Data4[4];\r | |
422 | GuidBuffer->Data4[5] = (UINT8) Data4[5];\r | |
423 | GuidBuffer->Data4[6] = (UINT8) Data4[6];\r | |
424 | GuidBuffer->Data4[7] = (UINT8) Data4[7];\r | |
425 | \r | |
426 | return EFI_SUCCESS;\r | |
427 | }\r | |
428 | \r | |
429 | EFI_STATUS\r | |
430 | AsciiStringToUint64 (\r | |
431 | IN CONST CHAR8 *AsciiString,\r | |
432 | IN BOOLEAN IsHex,\r | |
433 | OUT UINT64 *ReturnValue\r | |
434 | )\r | |
435 | /*++\r | |
436 | \r | |
437 | Routine Description:\r | |
438 | \r | |
439 | Converts a null terminated ascii string that represents a number into a \r | |
440 | UINT64 value. A hex number may be preceeded by a 0x, but may not be \r | |
441 | succeeded by an h. A number without 0x or 0X is considered to be base 10 \r | |
442 | unless the IsHex input is true.\r | |
443 | \r | |
444 | Arguments:\r | |
445 | \r | |
446 | AsciiString The string to convert.\r | |
447 | IsHex Force the string to be treated as a hex number.\r | |
448 | ReturnValue The return value.\r | |
449 | \r | |
450 | Returns:\r | |
451 | \r | |
452 | EFI_SUCCESS Number successfully converted.\r | |
453 | EFI_ABORTED Invalid character encountered.\r | |
454 | \r | |
455 | --*/\r | |
456 | {\r | |
457 | UINT8 Index;\r | |
458 | UINT64 HexNumber;\r | |
459 | CHAR8 CurrentChar;\r | |
460 | \r | |
461 | //\r | |
462 | // Initialize the result\r | |
463 | //\r | |
464 | HexNumber = 0;\r | |
465 | \r | |
466 | //\r | |
467 | // Add each character to the result\r | |
468 | //\r | |
469 | if (IsHex || (AsciiString[0] == '0' && (AsciiString[1] == 'x' || AsciiString[1] == 'X'))) {\r | |
470 | //\r | |
471 | // Verify string is a hex number\r | |
472 | //\r | |
473 | for (Index = 2; Index < strlen (AsciiString); Index++) {\r | |
474 | if (isxdigit (AsciiString[Index]) == 0) {\r | |
475 | return EFI_ABORTED;\r | |
476 | }\r | |
477 | }\r | |
478 | //\r | |
479 | // Convert the hex string.\r | |
480 | //\r | |
481 | for (Index = 2; AsciiString[Index] != '\0'; Index++) {\r | |
482 | CurrentChar = AsciiString[Index];\r | |
483 | HexNumber *= 16;\r | |
484 | if (CurrentChar >= '0' && CurrentChar <= '9') {\r | |
485 | HexNumber += CurrentChar - '0';\r | |
486 | } else if (CurrentChar >= 'a' && CurrentChar <= 'f') {\r | |
487 | HexNumber += CurrentChar - 'a' + 10;\r | |
488 | } else if (CurrentChar >= 'A' && CurrentChar <= 'F') {\r | |
489 | HexNumber += CurrentChar - 'A' + 10;\r | |
490 | } else {\r | |
491 | //\r | |
492 | // Unrecognized character\r | |
493 | //\r | |
494 | return EFI_ABORTED;\r | |
495 | }\r | |
496 | }\r | |
497 | \r | |
498 | *ReturnValue = HexNumber;\r | |
499 | } else {\r | |
500 | //\r | |
501 | // Verify string is a number\r | |
502 | //\r | |
503 | for (Index = 0; Index < strlen (AsciiString); Index++) {\r | |
504 | if (isdigit (AsciiString[Index]) == 0) {\r | |
505 | return EFI_ABORTED;\r | |
506 | }\r | |
507 | }\r | |
508 | \r | |
509 | *ReturnValue = atol (AsciiString);\r | |
510 | }\r | |
511 | \r | |
512 | return EFI_SUCCESS;\r | |
513 | };\r | |
514 | \r | |
515 | CHAR8 *\r | |
516 | ReadLineInStream (\r | |
517 | IN FILE *InputFile,\r | |
518 | IN OUT CHAR8 *InputBuffer\r | |
519 | )\r | |
520 | /*++\r | |
521 | \r | |
522 | Routine Description:\r | |
523 | \r | |
524 | This function reads a line, stripping any comments.\r | |
525 | // BUGBUG: This is obsolete once genmake goes away...\r | |
526 | \r | |
527 | Arguments:\r | |
528 | \r | |
529 | InputFile Stream pointer.\r | |
530 | InputBuffer Buffer to read into, must be _MAX_PATH size.\r | |
531 | \r | |
532 | Returns:\r | |
533 | \r | |
534 | NULL if error or EOF\r | |
535 | InputBuffer otherwise\r | |
536 | \r | |
537 | --*/\r | |
538 | {\r | |
539 | CHAR8 *CharPtr;\r | |
540 | \r | |
541 | //\r | |
542 | // Verify input parameters are not null\r | |
543 | //\r | |
544 | assert (InputFile);\r | |
545 | assert (InputBuffer);\r | |
546 | \r | |
547 | //\r | |
548 | // Read a line\r | |
549 | //\r | |
550 | if (fgets (InputBuffer, _MAX_PATH, InputFile) == NULL) {\r | |
551 | return NULL;\r | |
552 | }\r | |
553 | //\r | |
554 | // Strip any comments\r | |
555 | //\r | |
556 | CharPtr = strstr (InputBuffer, "//");\r | |
557 | if (CharPtr != 0) {\r | |
558 | CharPtr[0] = 0;\r | |
559 | }\r | |
560 | \r | |
561 | CharPtr = strstr (InputBuffer, "#");\r | |
562 | if (CharPtr != 0) {\r | |
563 | CharPtr[0] = 0;\r | |
564 | }\r | |
565 | //\r | |
566 | // Return the string\r | |
567 | //\r | |
568 | return InputBuffer;\r | |
569 | }\r | |
570 | \r | |
571 | BOOLEAN\r | |
572 | FindSectionInStream (\r | |
573 | IN FILE *InputFile,\r | |
574 | IN CHAR8 *Section\r | |
575 | )\r | |
576 | /*++\r | |
577 | \r | |
578 | Routine Description:\r | |
579 | \r | |
580 | This function parses a stream file from the beginning to find a section.\r | |
581 | The section string may be anywhere within a line.\r | |
582 | // BUGBUG: This is obsolete once genmake goes away...\r | |
583 | \r | |
584 | Arguments:\r | |
585 | \r | |
586 | InputFile Stream pointer.\r | |
587 | Section Section to search for\r | |
588 | \r | |
589 | Returns:\r | |
590 | \r | |
591 | FALSE if error or EOF\r | |
592 | TRUE if section found\r | |
593 | \r | |
594 | --*/\r | |
595 | {\r | |
596 | CHAR8 InputBuffer[_MAX_PATH];\r | |
597 | CHAR8 *CurrentToken;\r | |
598 | \r | |
599 | //\r | |
600 | // Verify input is not NULL\r | |
601 | //\r | |
602 | assert (InputFile);\r | |
603 | assert (Section);\r | |
604 | \r | |
605 | //\r | |
606 | // Rewind to beginning of file\r | |
607 | //\r | |
608 | if (fseek (InputFile, 0, SEEK_SET) != 0) {\r | |
609 | return FALSE;\r | |
610 | }\r | |
611 | //\r | |
612 | // Read lines until the section is found\r | |
613 | //\r | |
614 | while (feof (InputFile) == 0) {\r | |
615 | //\r | |
616 | // Read a line\r | |
617 | //\r | |
618 | ReadLineInStream (InputFile, InputBuffer);\r | |
619 | \r | |
620 | //\r | |
621 | // Check if the section is found\r | |
622 | //\r | |
623 | CurrentToken = strstr (InputBuffer, Section);\r | |
624 | if (CurrentToken != NULL) {\r | |
625 | return TRUE;\r | |
626 | }\r | |
627 | }\r | |
628 | \r | |
629 | return FALSE;\r | |
630 | }\r |