/src/libmsiecf/libuna/libuna_base16_stream.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Base16 stream functions |
3 | | * |
4 | | * Copyright (C) 2008-2024, Joachim Metz <joachim.metz@gmail.com> |
5 | | * |
6 | | * Refer to AUTHORS for acknowledgements. |
7 | | * |
8 | | * This program is free software: you can redistribute it and/or modify |
9 | | * it under the terms of the GNU Lesser General Public License as published by |
10 | | * the Free Software Foundation, either version 3 of the License, or |
11 | | * (at your option) any later version. |
12 | | * |
13 | | * This program is distributed in the hope that it will be useful, |
14 | | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
15 | | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
16 | | * GNU General Public License for more details. |
17 | | * |
18 | | * You should have received a copy of the GNU Lesser General Public License |
19 | | * along with this program. If not, see <https://www.gnu.org/licenses/>. |
20 | | */ |
21 | | |
22 | | #include <common.h> |
23 | | #include <byte_stream.h> |
24 | | #include <types.h> |
25 | | |
26 | | #include "libuna_base16_stream.h" |
27 | | #include "libuna_definitions.h" |
28 | | #include "libuna_libcerror.h" |
29 | | #include "libuna_types.h" |
30 | | |
31 | | /* Copies a base16 character from a base16 stream |
32 | | * Returns 1 if successful or -1 on error |
33 | | */ |
34 | | int libuna_base16_character_copy_from_base16_stream( |
35 | | uint32_t *base16_character, |
36 | | const uint8_t *base16_stream, |
37 | | uint32_t base16_variant, |
38 | | libcerror_error_t **error ) |
39 | 0 | { |
40 | 0 | static char *function = "libuna_base16_character_copy_from_base16_stream"; |
41 | 0 | uint32_t safe_base16_character = 0; |
42 | |
|
43 | 0 | if( base16_character == NULL ) |
44 | 0 | { |
45 | 0 | libcerror_error_set( |
46 | 0 | error, |
47 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
48 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
49 | 0 | "%s: invalid base16 character.", |
50 | 0 | function ); |
51 | |
|
52 | 0 | return( -1 ); |
53 | 0 | } |
54 | 0 | if( base16_stream == NULL ) |
55 | 0 | { |
56 | 0 | libcerror_error_set( |
57 | 0 | error, |
58 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
59 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
60 | 0 | "%s: invalid base16 stream.", |
61 | 0 | function ); |
62 | |
|
63 | 0 | return( -1 ); |
64 | 0 | } |
65 | 0 | switch( base16_variant & 0xf0000000UL ) |
66 | 0 | { |
67 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_BYTE_STREAM: |
68 | 0 | safe_base16_character = *base16_stream; |
69 | 0 | break; |
70 | | |
71 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
72 | 0 | byte_stream_copy_to_uint16_big_endian( |
73 | 0 | base16_stream, |
74 | 0 | safe_base16_character ); |
75 | 0 | break; |
76 | | |
77 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
78 | 0 | byte_stream_copy_to_uint16_little_endian( |
79 | 0 | base16_stream, |
80 | 0 | safe_base16_character ); |
81 | 0 | break; |
82 | | |
83 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
84 | 0 | byte_stream_copy_to_uint32_big_endian( |
85 | 0 | base16_stream, |
86 | 0 | safe_base16_character ); |
87 | 0 | break; |
88 | | |
89 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
90 | 0 | byte_stream_copy_to_uint32_little_endian( |
91 | 0 | base16_stream, |
92 | 0 | safe_base16_character ); |
93 | 0 | break; |
94 | | |
95 | 0 | default: |
96 | 0 | libcerror_error_set( |
97 | 0 | error, |
98 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
99 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
100 | 0 | "%s: unsupported base16 variant.", |
101 | 0 | function ); |
102 | |
|
103 | 0 | return( -1 ); |
104 | 0 | } |
105 | 0 | if( ( safe_base16_character & 0xffffff00UL ) != 0 ) |
106 | 0 | { |
107 | 0 | libcerror_error_set( |
108 | 0 | error, |
109 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
110 | 0 | LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE, |
111 | 0 | "%s: invalid base16 character.", |
112 | 0 | function ); |
113 | |
|
114 | 0 | return( -1 ); |
115 | 0 | } |
116 | 0 | *base16_character = safe_base16_character; |
117 | |
|
118 | 0 | return( 1 ); |
119 | 0 | } |
120 | | |
121 | | /* Determines the size of a byte stream from a base16 stream |
122 | | * |
123 | | * LIBUNA_BASE16_FLAG_STRIP_WHITESPACE removes leading space and tab characters, |
124 | | * and trailing space, tab and end of line characters |
125 | | * |
126 | | * Returns 1 if successful or -1 on error |
127 | | */ |
128 | | int libuna_base16_stream_size_to_byte_stream( |
129 | | const uint8_t *base16_stream, |
130 | | size_t base16_stream_size, |
131 | | size_t *byte_stream_size, |
132 | | uint32_t base16_variant, |
133 | | uint8_t flags, |
134 | | libcerror_error_t **error ) |
135 | 0 | { |
136 | 0 | static char *function = "libuna_base16_stream_size_to_byte_stream"; |
137 | 0 | size_t base16_character_size = 0; |
138 | 0 | size_t base16_stream_index = 0; |
139 | 0 | size_t number_of_characters = 0; |
140 | 0 | size_t whitespace_size = 0; |
141 | 0 | uint32_t base16_character1 = 0; |
142 | 0 | uint32_t base16_character2 = 0; |
143 | 0 | uint8_t character_case = 0; |
144 | 0 | uint8_t character_limit = 0; |
145 | 0 | uint8_t strip_mode = LIBUNA_STRIP_MODE_LEADING_WHITESPACE; |
146 | |
|
147 | 0 | if( base16_stream == NULL ) |
148 | 0 | { |
149 | 0 | libcerror_error_set( |
150 | 0 | error, |
151 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
152 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
153 | 0 | "%s: invalid base16 stream.", |
154 | 0 | function ); |
155 | |
|
156 | 0 | return( -1 ); |
157 | 0 | } |
158 | 0 | if( base16_stream_size > (size_t) SSIZE_MAX ) |
159 | 0 | { |
160 | 0 | libcerror_error_set( |
161 | 0 | error, |
162 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
163 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
164 | 0 | "%s: invalid base16 stream size value exceeds maximum.", |
165 | 0 | function ); |
166 | |
|
167 | 0 | return( -1 ); |
168 | 0 | } |
169 | 0 | if( byte_stream_size == NULL ) |
170 | 0 | { |
171 | 0 | libcerror_error_set( |
172 | 0 | error, |
173 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
174 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
175 | 0 | "%s: invalid byte stream size.", |
176 | 0 | function ); |
177 | |
|
178 | 0 | return( -1 ); |
179 | 0 | } |
180 | 0 | switch( base16_variant & 0x000000ffUL ) |
181 | 0 | { |
182 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_NONE: |
183 | 0 | character_limit = 0; |
184 | 0 | break; |
185 | | |
186 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_64: |
187 | 0 | character_limit = 64; |
188 | 0 | break; |
189 | | |
190 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_76: |
191 | 0 | character_limit = 76; |
192 | 0 | break; |
193 | | |
194 | 0 | default: |
195 | 0 | libcerror_error_set( |
196 | 0 | error, |
197 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
198 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
199 | 0 | "%s: unsupported base16 variant.", |
200 | 0 | function ); |
201 | |
|
202 | 0 | return( -1 ); |
203 | 0 | } |
204 | 0 | switch( base16_variant & 0x000f0000UL ) |
205 | 0 | { |
206 | 0 | case LIBUNA_BASE16_VARIANT_CASE_LOWER: |
207 | 0 | character_case = LIBUNA_CASE_LOWER; |
208 | 0 | break; |
209 | | |
210 | 0 | case LIBUNA_BASE16_VARIANT_CASE_MIXED: |
211 | 0 | character_case = LIBUNA_CASE_MIXED; |
212 | 0 | break; |
213 | | |
214 | 0 | case LIBUNA_BASE16_VARIANT_CASE_UPPER: |
215 | 0 | character_case = LIBUNA_CASE_UPPER; |
216 | 0 | break; |
217 | | |
218 | 0 | default: |
219 | 0 | libcerror_error_set( |
220 | 0 | error, |
221 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
222 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
223 | 0 | "%s: unsupported base16 variant.", |
224 | 0 | function ); |
225 | |
|
226 | 0 | return( -1 ); |
227 | 0 | } |
228 | 0 | switch( base16_variant & 0xf0000000UL ) |
229 | 0 | { |
230 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_BYTE_STREAM: |
231 | 0 | base16_character_size = 1; |
232 | 0 | break; |
233 | | |
234 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
235 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
236 | 0 | base16_character_size = 2; |
237 | 0 | break; |
238 | | |
239 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
240 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
241 | 0 | base16_character_size = 4; |
242 | 0 | break; |
243 | | |
244 | 0 | default: |
245 | 0 | libcerror_error_set( |
246 | 0 | error, |
247 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
248 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
249 | 0 | "%s: unsupported base16 variant.", |
250 | 0 | function ); |
251 | |
|
252 | 0 | return( -1 ); |
253 | 0 | } |
254 | 0 | if( ( flags & ~( LIBUNA_BASE16_FLAG_STRIP_WHITESPACE ) ) != 0 ) |
255 | 0 | { |
256 | 0 | libcerror_error_set( |
257 | 0 | error, |
258 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
259 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
260 | 0 | "%s: unsupported flags.", |
261 | 0 | function ); |
262 | |
|
263 | 0 | return( -1 ); |
264 | 0 | } |
265 | | /* Ignore trailing whitespace |
266 | | */ |
267 | 0 | if( base16_stream_size > base16_character_size ) |
268 | 0 | { |
269 | 0 | base16_stream_index = base16_stream_size - base16_character_size; |
270 | 0 | whitespace_size = 0; |
271 | |
|
272 | 0 | while( base16_stream_index > base16_character_size ) |
273 | 0 | { |
274 | 0 | if( libuna_base16_character_copy_from_base16_stream( |
275 | 0 | &base16_character1, |
276 | 0 | &( base16_stream[ base16_stream_index ] ), |
277 | 0 | base16_variant, |
278 | 0 | error ) != 1 ) |
279 | 0 | { |
280 | 0 | libcerror_error_set( |
281 | 0 | error, |
282 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
283 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
284 | 0 | "%s: unable to copy base16 character at index: %" PRIzd ".", |
285 | 0 | function, |
286 | 0 | base16_stream_index ); |
287 | |
|
288 | 0 | return( -1 ); |
289 | 0 | } |
290 | 0 | base16_stream_index -= base16_character_size; |
291 | |
|
292 | 0 | if( ( base16_character1 == (uint32_t) '\n' ) |
293 | 0 | || ( base16_character1 == (uint32_t) '\r' ) ) |
294 | 0 | { |
295 | 0 | whitespace_size += base16_character_size; |
296 | 0 | } |
297 | 0 | else if( ( flags & LIBUNA_BASE16_FLAG_STRIP_WHITESPACE ) == 0 ) |
298 | 0 | { |
299 | 0 | break; |
300 | 0 | } |
301 | 0 | else if( ( base16_character1 == (uint32_t) ' ' ) |
302 | 0 | || ( base16_character1 == (uint32_t) '\t' ) |
303 | 0 | || ( base16_character1 == (uint32_t) '\v' ) ) |
304 | 0 | { |
305 | 0 | whitespace_size += base16_character_size; |
306 | 0 | } |
307 | 0 | else |
308 | 0 | { |
309 | 0 | break; |
310 | 0 | } |
311 | 0 | } |
312 | 0 | base16_stream_size -= whitespace_size; |
313 | 0 | } |
314 | 0 | base16_stream_index = 0; |
315 | 0 | whitespace_size = 0; |
316 | |
|
317 | 0 | while( base16_stream_index < base16_stream_size ) |
318 | 0 | { |
319 | 0 | if( libuna_base16_character_copy_from_base16_stream( |
320 | 0 | &base16_character1, |
321 | 0 | &( base16_stream[ base16_stream_index ] ), |
322 | 0 | base16_variant, |
323 | 0 | error ) != 1 ) |
324 | 0 | { |
325 | 0 | libcerror_error_set( |
326 | 0 | error, |
327 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
328 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
329 | 0 | "%s: unable to copy base16 character at index: %" PRIzd ".", |
330 | 0 | function, |
331 | 0 | base16_stream_index ); |
332 | |
|
333 | 0 | return( -1 ); |
334 | 0 | } |
335 | 0 | base16_stream_index += base16_character_size; |
336 | |
|
337 | 0 | if( ( base16_character1 == (uint32_t) '\n' ) |
338 | 0 | || ( base16_character1 == (uint32_t) '\r' ) ) |
339 | 0 | { |
340 | 0 | if( ( strip_mode != LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
341 | 0 | && ( strip_mode != LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) ) |
342 | 0 | { |
343 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
344 | 0 | } |
345 | 0 | else |
346 | 0 | { |
347 | | /* Handle multi-character end-of-line |
348 | | */ |
349 | 0 | if( ( base16_stream_index + base16_character_size ) < base16_stream_size ) |
350 | 0 | { |
351 | 0 | if( libuna_base16_character_copy_from_base16_stream( |
352 | 0 | &base16_character2, |
353 | 0 | &( base16_stream[ base16_stream_index + base16_character_size ] ), |
354 | 0 | base16_variant, |
355 | 0 | error ) != 1 ) |
356 | 0 | { |
357 | 0 | libcerror_error_set( |
358 | 0 | error, |
359 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
360 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
361 | 0 | "%s: unable to copy base16 character at index: %" PRIzd ".", |
362 | 0 | function, |
363 | 0 | base16_stream_index ); |
364 | |
|
365 | 0 | return( -1 ); |
366 | 0 | } |
367 | 0 | if( ( base16_character2 == (uint32_t) '\n' ) |
368 | 0 | || ( base16_character2 == (uint32_t) '\r' ) ) |
369 | 0 | { |
370 | 0 | base16_stream_index += base16_character_size; |
371 | 0 | whitespace_size += base16_character_size; |
372 | 0 | } |
373 | 0 | } |
374 | 0 | strip_mode = LIBUNA_STRIP_MODE_LEADING_WHITESPACE; |
375 | 0 | } |
376 | 0 | if( character_limit != 0 ) |
377 | 0 | { |
378 | 0 | if( number_of_characters != (size_t) character_limit ) |
379 | 0 | { |
380 | 0 | libcerror_error_set( |
381 | 0 | error, |
382 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
383 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
384 | 0 | "%s: number of characters in line does not match character limit.", |
385 | 0 | function ); |
386 | |
|
387 | 0 | return( -1 ); |
388 | 0 | } |
389 | 0 | number_of_characters = 0; |
390 | 0 | } |
391 | 0 | whitespace_size += base16_character_size; |
392 | 0 | } |
393 | 0 | else if( ( base16_character1 == (uint32_t) ' ' ) |
394 | 0 | || ( base16_character1 == (uint32_t) '\t' ) |
395 | 0 | || ( base16_character1 == (uint32_t) '\v' ) ) |
396 | 0 | { |
397 | 0 | if( ( flags & LIBUNA_BASE16_FLAG_STRIP_WHITESPACE ) != 0 ) |
398 | 0 | { |
399 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
400 | 0 | { |
401 | 0 | strip_mode = LIBUNA_STRIP_MODE_TRAILING_WHITESPACE; |
402 | 0 | } |
403 | 0 | if( ( strip_mode != LIBUNA_STRIP_MODE_LEADING_WHITESPACE ) |
404 | 0 | && ( strip_mode != LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) ) |
405 | 0 | { |
406 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
407 | 0 | } |
408 | 0 | else |
409 | 0 | { |
410 | 0 | whitespace_size += base16_character_size; |
411 | 0 | } |
412 | 0 | } |
413 | 0 | else |
414 | 0 | { |
415 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
416 | 0 | } |
417 | 0 | } |
418 | 0 | else if( strip_mode == LIBUNA_STRIP_MODE_LEADING_WHITESPACE ) |
419 | 0 | { |
420 | 0 | strip_mode = LIBUNA_STRIP_MODE_NON_WHITESPACE; |
421 | 0 | } |
422 | 0 | else if( strip_mode == LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) |
423 | 0 | { |
424 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
425 | 0 | } |
426 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
427 | 0 | { |
428 | 0 | if( ( base16_character1 >= (uint32_t) 'A' ) |
429 | 0 | && ( base16_character1 <= (uint32_t) 'F' ) ) |
430 | 0 | { |
431 | 0 | if( ( character_case != LIBUNA_CASE_MIXED ) |
432 | 0 | && ( character_case != LIBUNA_CASE_UPPER ) ) |
433 | 0 | { |
434 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
435 | 0 | } |
436 | 0 | number_of_characters++; |
437 | 0 | } |
438 | 0 | else if( ( base16_character1 >= (uint32_t) 'a' ) |
439 | 0 | && ( base16_character1 <= (uint32_t) 'f' ) ) |
440 | 0 | { |
441 | 0 | if( ( character_case != LIBUNA_CASE_MIXED ) |
442 | 0 | && ( character_case != LIBUNA_CASE_LOWER ) ) |
443 | 0 | { |
444 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
445 | 0 | } |
446 | 0 | number_of_characters++; |
447 | 0 | } |
448 | 0 | else if( ( base16_character1 >= (uint32_t) '0' ) |
449 | 0 | && ( base16_character1 <= (uint32_t) '9' ) ) |
450 | 0 | { |
451 | 0 | number_of_characters++; |
452 | 0 | } |
453 | 0 | else |
454 | 0 | { |
455 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
456 | 0 | } |
457 | 0 | } |
458 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_INVALID_CHARACTER ) |
459 | 0 | { |
460 | 0 | libcerror_error_set( |
461 | 0 | error, |
462 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
463 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
464 | 0 | "%s: invalid character in base16 stream at index: %" PRIzd ".", |
465 | 0 | function, |
466 | 0 | base16_stream_index - base16_character_size ); |
467 | |
|
468 | 0 | return( -1 ); |
469 | 0 | } |
470 | 0 | } |
471 | 0 | if( character_limit != 0 ) |
472 | 0 | { |
473 | 0 | if( number_of_characters > (size_t) character_limit ) |
474 | 0 | { |
475 | 0 | libcerror_error_set( |
476 | 0 | error, |
477 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
478 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
479 | 0 | "%s: number of characters in last line exceed maximum.", |
480 | 0 | function ); |
481 | |
|
482 | 0 | return( -1 ); |
483 | 0 | } |
484 | 0 | } |
485 | 0 | base16_stream_size -= whitespace_size; |
486 | | |
487 | | /* Make sure the byte stream is able to hold |
488 | | * at least 1 byte for each 2 base16 characters |
489 | | */ |
490 | 0 | base16_character_size *= 2; |
491 | |
|
492 | 0 | if( ( base16_stream_size % base16_character_size ) != 0 ) |
493 | 0 | { |
494 | 0 | libcerror_error_set( |
495 | 0 | error, |
496 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
497 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
498 | 0 | "%s: invalid base16 stream size.", |
499 | 0 | function ); |
500 | |
|
501 | 0 | return( -1 ); |
502 | 0 | } |
503 | 0 | base16_stream_size /= base16_character_size; |
504 | |
|
505 | 0 | *byte_stream_size = base16_stream_size; |
506 | |
|
507 | 0 | return( 1 ); |
508 | 0 | } |
509 | | |
510 | | /* Copies a byte stream from a base16 stream |
511 | | * |
512 | | * LIBUNA_BASE16_FLAG_STRIP_WHITESPACE removes leading space and tab characters, |
513 | | * and trailing space, tab and end of line characters |
514 | | * |
515 | | * Returns 1 if successful or -1 on error |
516 | | */ |
517 | | int libuna_base16_stream_copy_to_byte_stream( |
518 | | const uint8_t *base16_stream, |
519 | | size_t base16_stream_size, |
520 | | uint8_t *byte_stream, |
521 | | size_t byte_stream_size, |
522 | | uint32_t base16_variant, |
523 | | uint8_t flags, |
524 | | libcerror_error_t **error ) |
525 | 0 | { |
526 | 0 | static char *function = "libuna_base16_stream_copy_to_byte_stream"; |
527 | 0 | size_t base16_character_size = 0; |
528 | 0 | size_t base16_stream_index = 0; |
529 | 0 | size_t byte_stream_index = 0; |
530 | 0 | size_t number_of_characters = 0; |
531 | 0 | size_t whitespace_size = 0; |
532 | 0 | uint32_t base16_character1 = 0; |
533 | 0 | uint32_t base16_character2 = 0; |
534 | 0 | uint8_t byte_value = 0; |
535 | 0 | uint8_t character_case = 0; |
536 | 0 | uint8_t character_limit = 0; |
537 | 0 | uint8_t strip_mode = LIBUNA_STRIP_MODE_LEADING_WHITESPACE; |
538 | |
|
539 | 0 | if( base16_stream == NULL ) |
540 | 0 | { |
541 | 0 | libcerror_error_set( |
542 | 0 | error, |
543 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
544 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
545 | 0 | "%s: invalid base16 stream.", |
546 | 0 | function ); |
547 | |
|
548 | 0 | return( -1 ); |
549 | 0 | } |
550 | 0 | if( base16_stream_size > (size_t) SSIZE_MAX ) |
551 | 0 | { |
552 | 0 | libcerror_error_set( |
553 | 0 | error, |
554 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
555 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
556 | 0 | "%s: invalid base16 stream size value exceeds maximum.", |
557 | 0 | function ); |
558 | |
|
559 | 0 | return( -1 ); |
560 | 0 | } |
561 | 0 | if( byte_stream == NULL ) |
562 | 0 | { |
563 | 0 | libcerror_error_set( |
564 | 0 | error, |
565 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
566 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
567 | 0 | "%s: invalid byte stream.", |
568 | 0 | function ); |
569 | |
|
570 | 0 | return( -1 ); |
571 | 0 | } |
572 | 0 | if( byte_stream_size > (size_t) SSIZE_MAX ) |
573 | 0 | { |
574 | 0 | libcerror_error_set( |
575 | 0 | error, |
576 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
577 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
578 | 0 | "%s: invalid byte stream size value exceeds maximum.", |
579 | 0 | function ); |
580 | |
|
581 | 0 | return( -1 ); |
582 | 0 | } |
583 | 0 | switch( base16_variant & 0x000000ffUL ) |
584 | 0 | { |
585 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_NONE: |
586 | 0 | character_limit = 0; |
587 | 0 | break; |
588 | | |
589 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_64: |
590 | 0 | character_limit = 64; |
591 | 0 | break; |
592 | | |
593 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_76: |
594 | 0 | character_limit = 76; |
595 | 0 | break; |
596 | | |
597 | 0 | default: |
598 | 0 | libcerror_error_set( |
599 | 0 | error, |
600 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
601 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
602 | 0 | "%s: unsupported base16 variant.", |
603 | 0 | function ); |
604 | |
|
605 | 0 | return( -1 ); |
606 | 0 | } |
607 | 0 | switch( base16_variant & 0x000f0000UL ) |
608 | 0 | { |
609 | 0 | case LIBUNA_BASE16_VARIANT_CASE_LOWER: |
610 | 0 | character_case = LIBUNA_CASE_LOWER; |
611 | 0 | break; |
612 | | |
613 | 0 | case LIBUNA_BASE16_VARIANT_CASE_MIXED: |
614 | 0 | character_case = LIBUNA_CASE_MIXED; |
615 | 0 | break; |
616 | | |
617 | 0 | case LIBUNA_BASE16_VARIANT_CASE_UPPER: |
618 | 0 | character_case = LIBUNA_CASE_UPPER; |
619 | 0 | break; |
620 | | |
621 | 0 | default: |
622 | 0 | libcerror_error_set( |
623 | 0 | error, |
624 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
625 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
626 | 0 | "%s: unsupported base16 variant.", |
627 | 0 | function ); |
628 | |
|
629 | 0 | return( -1 ); |
630 | 0 | } |
631 | 0 | switch( base16_variant & 0xf0000000UL ) |
632 | 0 | { |
633 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_BYTE_STREAM: |
634 | 0 | base16_character_size = 1; |
635 | 0 | break; |
636 | | |
637 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
638 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
639 | 0 | base16_character_size = 2; |
640 | 0 | break; |
641 | | |
642 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
643 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
644 | 0 | base16_character_size = 4; |
645 | 0 | break; |
646 | | |
647 | 0 | default: |
648 | 0 | libcerror_error_set( |
649 | 0 | error, |
650 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
651 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
652 | 0 | "%s: unsupported base16 variant.", |
653 | 0 | function ); |
654 | |
|
655 | 0 | return( -1 ); |
656 | 0 | } |
657 | 0 | if( ( flags & ~( LIBUNA_BASE16_FLAG_STRIP_WHITESPACE ) ) != 0 ) |
658 | 0 | { |
659 | 0 | libcerror_error_set( |
660 | 0 | error, |
661 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
662 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
663 | 0 | "%s: unsupported flags.", |
664 | 0 | function ); |
665 | |
|
666 | 0 | return( -1 ); |
667 | 0 | } |
668 | | /* Ignore trailing whitespace |
669 | | */ |
670 | 0 | if( base16_stream_size > base16_character_size ) |
671 | 0 | { |
672 | 0 | base16_stream_index = base16_stream_size - base16_character_size; |
673 | 0 | whitespace_size = 0; |
674 | |
|
675 | 0 | while( base16_stream_index > base16_character_size ) |
676 | 0 | { |
677 | 0 | if( libuna_base16_character_copy_from_base16_stream( |
678 | 0 | &base16_character1, |
679 | 0 | &( base16_stream[ base16_stream_index ] ), |
680 | 0 | base16_variant, |
681 | 0 | error ) != 1 ) |
682 | 0 | { |
683 | 0 | libcerror_error_set( |
684 | 0 | error, |
685 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
686 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
687 | 0 | "%s: unable to copy base16 character at index: %" PRIzd ".", |
688 | 0 | function, |
689 | 0 | base16_stream_index ); |
690 | |
|
691 | 0 | return( -1 ); |
692 | 0 | } |
693 | 0 | base16_stream_index -= base16_character_size; |
694 | |
|
695 | 0 | if( ( base16_character1 == (uint32_t) '\n' ) |
696 | 0 | || ( base16_character1 == (uint32_t) '\r' ) ) |
697 | 0 | { |
698 | 0 | whitespace_size += base16_character_size; |
699 | 0 | } |
700 | 0 | else if( ( flags & LIBUNA_BASE16_FLAG_STRIP_WHITESPACE ) == 0 ) |
701 | 0 | { |
702 | 0 | break; |
703 | 0 | } |
704 | 0 | else if( ( base16_character1 == (uint32_t) ' ' ) |
705 | 0 | || ( base16_character1 == (uint32_t) '\t' ) |
706 | 0 | || ( base16_character1 == (uint32_t) '\v' ) ) |
707 | 0 | { |
708 | 0 | whitespace_size += base16_character_size; |
709 | 0 | } |
710 | 0 | else |
711 | 0 | { |
712 | 0 | break; |
713 | 0 | } |
714 | 0 | } |
715 | 0 | base16_stream_size -= whitespace_size; |
716 | 0 | } |
717 | 0 | if( ( flags & LIBUNA_BASE16_FLAG_STRIP_WHITESPACE ) == 0 ) |
718 | 0 | { |
719 | 0 | strip_mode = LIBUNA_STRIP_MODE_NON_WHITESPACE; |
720 | 0 | } |
721 | 0 | base16_stream_index = 0; |
722 | |
|
723 | 0 | while( base16_stream_index < base16_stream_size ) |
724 | 0 | { |
725 | 0 | if( libuna_base16_character_copy_from_base16_stream( |
726 | 0 | &base16_character1, |
727 | 0 | &( base16_stream[ base16_stream_index ] ), |
728 | 0 | base16_variant, |
729 | 0 | error ) != 1 ) |
730 | 0 | { |
731 | 0 | libcerror_error_set( |
732 | 0 | error, |
733 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
734 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
735 | 0 | "%s: unable to copy base16 character at index: %" PRIzd ".", |
736 | 0 | function, |
737 | 0 | base16_stream_index ); |
738 | |
|
739 | 0 | return( -1 ); |
740 | 0 | } |
741 | 0 | base16_stream_index += base16_character_size; |
742 | |
|
743 | 0 | if( ( base16_character1 == (uint32_t) '\n' ) |
744 | 0 | || ( base16_character1 == (uint32_t) '\r' ) ) |
745 | 0 | { |
746 | 0 | if( ( strip_mode != LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
747 | 0 | && ( strip_mode != LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) ) |
748 | 0 | { |
749 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
750 | 0 | } |
751 | 0 | else |
752 | 0 | { |
753 | | /* Handle multi-character end-of-line |
754 | | */ |
755 | 0 | if( ( base16_stream_index + base16_character_size ) < base16_stream_size ) |
756 | 0 | { |
757 | 0 | if( libuna_base16_character_copy_from_base16_stream( |
758 | 0 | &base16_character2, |
759 | 0 | &( base16_stream[ base16_stream_index + base16_character_size ] ), |
760 | 0 | base16_variant, |
761 | 0 | error ) != 1 ) |
762 | 0 | { |
763 | 0 | libcerror_error_set( |
764 | 0 | error, |
765 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
766 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
767 | 0 | "%s: unable to copy base16 character at index: %" PRIzd ".", |
768 | 0 | function, |
769 | 0 | base16_stream_index ); |
770 | |
|
771 | 0 | return( -1 ); |
772 | 0 | } |
773 | 0 | if( ( base16_character2 == (uint32_t) '\n' ) |
774 | 0 | || ( base16_character2 == (uint32_t) '\r' ) ) |
775 | 0 | { |
776 | 0 | base16_stream_index += base16_character_size; |
777 | 0 | } |
778 | 0 | } |
779 | 0 | strip_mode = LIBUNA_STRIP_MODE_LEADING_WHITESPACE; |
780 | 0 | } |
781 | 0 | if( character_limit != 0 ) |
782 | 0 | { |
783 | 0 | if( number_of_characters != (size_t) character_limit ) |
784 | 0 | { |
785 | 0 | libcerror_error_set( |
786 | 0 | error, |
787 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
788 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
789 | 0 | "%s: number of characters in line does not match character limit.", |
790 | 0 | function ); |
791 | |
|
792 | 0 | return( -1 ); |
793 | 0 | } |
794 | 0 | number_of_characters = 0; |
795 | 0 | } |
796 | 0 | } |
797 | 0 | else if( ( base16_character1 == (uint32_t) ' ' ) |
798 | 0 | || ( base16_character1 == (uint32_t) '\t' ) |
799 | 0 | || ( base16_character1 == (uint32_t) '\v' ) ) |
800 | 0 | { |
801 | 0 | if( ( flags & LIBUNA_BASE16_FLAG_STRIP_WHITESPACE ) != 0 ) |
802 | 0 | { |
803 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
804 | 0 | { |
805 | 0 | strip_mode = LIBUNA_STRIP_MODE_TRAILING_WHITESPACE; |
806 | 0 | } |
807 | 0 | if( ( strip_mode != LIBUNA_STRIP_MODE_LEADING_WHITESPACE ) |
808 | 0 | && ( strip_mode != LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) ) |
809 | 0 | { |
810 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
811 | 0 | } |
812 | 0 | } |
813 | 0 | else |
814 | 0 | { |
815 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
816 | 0 | } |
817 | 0 | } |
818 | 0 | else if( strip_mode == LIBUNA_STRIP_MODE_LEADING_WHITESPACE ) |
819 | 0 | { |
820 | 0 | strip_mode = LIBUNA_STRIP_MODE_NON_WHITESPACE; |
821 | 0 | } |
822 | 0 | else if( strip_mode == LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) |
823 | 0 | { |
824 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
825 | 0 | } |
826 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_INVALID_CHARACTER ) |
827 | 0 | { |
828 | 0 | libcerror_error_set( |
829 | 0 | error, |
830 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
831 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
832 | 0 | "%s: invalid character in base16 stream at index: %" PRIzd ".", |
833 | 0 | function, |
834 | 0 | base16_stream_index - base16_character_size ); |
835 | |
|
836 | 0 | return( -1 ); |
837 | 0 | } |
838 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
839 | 0 | { |
840 | 0 | byte_value = 0; |
841 | |
|
842 | 0 | if( ( base16_character1 >= (uint32_t) 'A' ) |
843 | 0 | && ( base16_character1 <= (uint32_t) 'F' ) ) |
844 | 0 | { |
845 | 0 | if( ( character_case != LIBUNA_CASE_MIXED ) |
846 | 0 | && ( character_case != LIBUNA_CASE_UPPER ) ) |
847 | 0 | { |
848 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
849 | 0 | } |
850 | 0 | byte_value = (uint8_t) ( base16_character1 - (uint32_t) 'A' + 10 ); |
851 | 0 | } |
852 | 0 | else if( ( base16_character1 >= (uint32_t) 'a' ) |
853 | 0 | && ( base16_character1 <= (uint32_t) 'f' ) ) |
854 | 0 | { |
855 | 0 | if( ( character_case != LIBUNA_CASE_MIXED ) |
856 | 0 | && ( character_case != LIBUNA_CASE_LOWER ) ) |
857 | 0 | { |
858 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
859 | 0 | } |
860 | 0 | byte_value = (uint8_t) ( base16_character1 - (uint32_t) 'a' + 10 ); |
861 | 0 | } |
862 | 0 | else if( ( base16_character1 >= (uint32_t) '0' ) |
863 | 0 | && ( base16_character1 <= (uint32_t) '9' ) ) |
864 | 0 | { |
865 | 0 | byte_value = (uint8_t) ( base16_character1 - (uint32_t) '0' ); |
866 | 0 | } |
867 | 0 | else |
868 | 0 | { |
869 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
870 | 0 | } |
871 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_INVALID_CHARACTER ) |
872 | 0 | { |
873 | 0 | libcerror_error_set( |
874 | 0 | error, |
875 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
876 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
877 | 0 | "%s: invalid base16 character stream at index: %" PRIzd ".", |
878 | 0 | function, |
879 | 0 | base16_stream_index - base16_character_size ); |
880 | |
|
881 | 0 | return( -1 ); |
882 | 0 | } |
883 | 0 | byte_value <<= 4; |
884 | |
|
885 | 0 | if( libuna_base16_character_copy_from_base16_stream( |
886 | 0 | &base16_character1, |
887 | 0 | &( base16_stream[ base16_stream_index ] ), |
888 | 0 | base16_variant, |
889 | 0 | error ) != 1 ) |
890 | 0 | { |
891 | 0 | libcerror_error_set( |
892 | 0 | error, |
893 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
894 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
895 | 0 | "%s: unable to copy base16 character at index: %" PRIzd ".", |
896 | 0 | function, |
897 | 0 | base16_stream_index ); |
898 | |
|
899 | 0 | return( -1 ); |
900 | 0 | } |
901 | 0 | base16_stream_index += base16_character_size; |
902 | |
|
903 | 0 | if( ( base16_character1 >= (uint32_t) 'A' ) |
904 | 0 | && ( base16_character1 <= (uint32_t) 'F' ) ) |
905 | 0 | { |
906 | 0 | if( ( character_case != LIBUNA_CASE_MIXED ) |
907 | 0 | && ( character_case != LIBUNA_CASE_UPPER ) ) |
908 | 0 | { |
909 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
910 | 0 | } |
911 | 0 | byte_value |= (uint8_t) ( base16_character1 - (uint32_t) 'A' + 10 ); |
912 | 0 | } |
913 | 0 | else if( ( base16_character1 >= (uint32_t) 'a' ) |
914 | 0 | && ( base16_character1 <= (uint32_t) 'f' ) ) |
915 | 0 | { |
916 | 0 | if( ( character_case != LIBUNA_CASE_MIXED ) |
917 | 0 | && ( character_case != LIBUNA_CASE_LOWER ) ) |
918 | 0 | { |
919 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
920 | 0 | } |
921 | 0 | byte_value |= (uint8_t) ( base16_character1 - (uint32_t) 'a' + 10 ); |
922 | 0 | } |
923 | 0 | else if( ( base16_character1 >= (uint32_t) '0' ) |
924 | 0 | && ( base16_character1 <= (uint32_t) '9' ) ) |
925 | 0 | { |
926 | 0 | byte_value |= (uint8_t) ( base16_character1 - (uint32_t) '0' ); |
927 | 0 | } |
928 | 0 | else |
929 | 0 | { |
930 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
931 | 0 | } |
932 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_INVALID_CHARACTER ) |
933 | 0 | { |
934 | 0 | libcerror_error_set( |
935 | 0 | error, |
936 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
937 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
938 | 0 | "%s: invalid base16 character stream at index: %" PRIzd ".", |
939 | 0 | function, |
940 | 0 | base16_stream_index - base16_character_size ); |
941 | |
|
942 | 0 | return( -1 ); |
943 | 0 | } |
944 | 0 | if( byte_stream_index >= byte_stream_size ) |
945 | 0 | { |
946 | 0 | libcerror_error_set( |
947 | 0 | error, |
948 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
949 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
950 | 0 | "%s: byte stream is too small.", |
951 | 0 | function ); |
952 | |
|
953 | 0 | return( -1 ); |
954 | 0 | } |
955 | 0 | byte_stream[ byte_stream_index++ ] = byte_value; |
956 | |
|
957 | 0 | number_of_characters += 2; |
958 | 0 | } |
959 | 0 | } |
960 | 0 | if( character_limit != 0 ) |
961 | 0 | { |
962 | 0 | if( number_of_characters > (size_t) character_limit ) |
963 | 0 | { |
964 | 0 | libcerror_error_set( |
965 | 0 | error, |
966 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
967 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
968 | 0 | "%s: number of characters in last line exceed maximum.", |
969 | 0 | function ); |
970 | |
|
971 | 0 | return( -1 ); |
972 | 0 | } |
973 | 0 | } |
974 | 0 | return( 1 ); |
975 | 0 | } |
976 | | |
977 | | /* Determines the size of a base16 stream from a byte stream |
978 | | * Returns 1 if successful or -1 on error |
979 | | */ |
980 | | int libuna_base16_stream_size_from_byte_stream( |
981 | | const uint8_t *byte_stream, |
982 | | size_t byte_stream_size, |
983 | | size_t *base16_stream_size, |
984 | | uint32_t base16_variant, |
985 | | libcerror_error_t **error ) |
986 | 0 | { |
987 | 0 | static char *function = "libuna_base16_stream_size_from_byte_stream"; |
988 | 0 | size_t base16_character_size = 0; |
989 | 0 | size_t safe_base16_stream_size = 0; |
990 | 0 | size_t whitespace_size = 0; |
991 | 0 | uint8_t character_limit = 0; |
992 | |
|
993 | 0 | if( byte_stream == NULL ) |
994 | 0 | { |
995 | 0 | libcerror_error_set( |
996 | 0 | error, |
997 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
998 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
999 | 0 | "%s: invalid byte stream.", |
1000 | 0 | function ); |
1001 | |
|
1002 | 0 | return( -1 ); |
1003 | 0 | } |
1004 | 0 | if( byte_stream_size > (size_t) SSIZE_MAX ) |
1005 | 0 | { |
1006 | 0 | libcerror_error_set( |
1007 | 0 | error, |
1008 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1009 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
1010 | 0 | "%s: invalid byte stream size value exceeds maximum.", |
1011 | 0 | function ); |
1012 | |
|
1013 | 0 | return( -1 ); |
1014 | 0 | } |
1015 | 0 | if( base16_stream_size == NULL ) |
1016 | 0 | { |
1017 | 0 | libcerror_error_set( |
1018 | 0 | error, |
1019 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1020 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1021 | 0 | "%s: invalid base16 stream size.", |
1022 | 0 | function ); |
1023 | |
|
1024 | 0 | return( -1 ); |
1025 | 0 | } |
1026 | 0 | switch( base16_variant & 0x000000ffUL ) |
1027 | 0 | { |
1028 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_NONE: |
1029 | 0 | character_limit = 0; |
1030 | 0 | break; |
1031 | | |
1032 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_64: |
1033 | 0 | character_limit = 64; |
1034 | 0 | break; |
1035 | | |
1036 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_76: |
1037 | 0 | character_limit = 76; |
1038 | 0 | break; |
1039 | | |
1040 | 0 | default: |
1041 | 0 | libcerror_error_set( |
1042 | 0 | error, |
1043 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1044 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1045 | 0 | "%s: unsupported base16 variant.", |
1046 | 0 | function ); |
1047 | |
|
1048 | 0 | return( -1 ); |
1049 | 0 | } |
1050 | 0 | switch( base16_variant & 0x000f0000UL ) |
1051 | 0 | { |
1052 | 0 | case LIBUNA_BASE16_VARIANT_CASE_LOWER: |
1053 | 0 | case LIBUNA_BASE16_VARIANT_CASE_MIXED: |
1054 | 0 | case LIBUNA_BASE16_VARIANT_CASE_UPPER: |
1055 | 0 | break; |
1056 | | |
1057 | 0 | default: |
1058 | 0 | libcerror_error_set( |
1059 | 0 | error, |
1060 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1061 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1062 | 0 | "%s: unsupported base16 variant.", |
1063 | 0 | function ); |
1064 | |
|
1065 | 0 | return( -1 ); |
1066 | 0 | } |
1067 | 0 | switch( base16_variant & 0xf0000000UL ) |
1068 | 0 | { |
1069 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_BYTE_STREAM: |
1070 | 0 | base16_character_size = 1; |
1071 | 0 | break; |
1072 | | |
1073 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1074 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1075 | 0 | base16_character_size = 2; |
1076 | 0 | break; |
1077 | | |
1078 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1079 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1080 | 0 | base16_character_size = 4; |
1081 | 0 | break; |
1082 | | |
1083 | 0 | default: |
1084 | 0 | libcerror_error_set( |
1085 | 0 | error, |
1086 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1087 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1088 | 0 | "%s: unsupported base16 variant.", |
1089 | 0 | function ); |
1090 | |
|
1091 | 0 | return( -1 ); |
1092 | 0 | } |
1093 | | /* The base16 stream contains 2 characters for every byte |
1094 | | */ |
1095 | 0 | safe_base16_stream_size = byte_stream_size * 2; |
1096 | |
|
1097 | 0 | if( character_limit != 0 ) |
1098 | 0 | { |
1099 | 0 | whitespace_size = safe_base16_stream_size / character_limit; |
1100 | |
|
1101 | 0 | if( ( safe_base16_stream_size % character_limit ) != 0 ) |
1102 | 0 | { |
1103 | 0 | whitespace_size += 1; |
1104 | 0 | } |
1105 | 0 | safe_base16_stream_size += whitespace_size; |
1106 | 0 | } |
1107 | 0 | *base16_stream_size = safe_base16_stream_size * base16_character_size; |
1108 | |
|
1109 | 0 | return( 1 ); |
1110 | 0 | } |
1111 | | |
1112 | | /* Copies a base16 stream from a byte stream |
1113 | | * Returns 1 if successful or -1 on error |
1114 | | */ |
1115 | | int libuna_base16_stream_copy_from_byte_stream( |
1116 | | uint8_t *base16_stream, |
1117 | | size_t base16_stream_size, |
1118 | | const uint8_t *byte_stream, |
1119 | | size_t byte_stream_size, |
1120 | | uint32_t base16_variant, |
1121 | | libcerror_error_t **error ) |
1122 | 0 | { |
1123 | 0 | static char *function = "libuna_base16_stream_copy_from_byte_stream"; |
1124 | 0 | size_t base16_stream_index = 0; |
1125 | |
|
1126 | 0 | if( libuna_base16_stream_with_index_copy_from_byte_stream( |
1127 | 0 | base16_stream, |
1128 | 0 | base16_stream_size, |
1129 | 0 | &base16_stream_index, |
1130 | 0 | byte_stream, |
1131 | 0 | byte_stream_size, |
1132 | 0 | base16_variant, |
1133 | 0 | error ) != 1 ) |
1134 | 0 | { |
1135 | 0 | libcerror_error_set( |
1136 | 0 | error, |
1137 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
1138 | 0 | LIBCERROR_RUNTIME_ERROR_COPY_FAILED, |
1139 | 0 | "%s: unable to copy base16 stream from byte stream.", |
1140 | 0 | function ); |
1141 | |
|
1142 | 0 | return( -1 ); |
1143 | 0 | } |
1144 | 0 | return( 1 ); |
1145 | 0 | } |
1146 | | |
1147 | | /* Copies a base16 stream from a byte stream |
1148 | | * Returns 1 if successful or -1 on error |
1149 | | */ |
1150 | | int libuna_base16_stream_with_index_copy_from_byte_stream( |
1151 | | uint8_t *base16_stream, |
1152 | | size_t base16_stream_size, |
1153 | | size_t *base16_stream_index, |
1154 | | const uint8_t *byte_stream, |
1155 | | size_t byte_stream_size, |
1156 | | uint32_t base16_variant, |
1157 | | libcerror_error_t **error ) |
1158 | 0 | { |
1159 | 0 | static char *function = "libuna_base16_stream_with_index_copy_from_byte_stream"; |
1160 | 0 | size_t base16_character_size = 0; |
1161 | 0 | size_t byte_stream_index = 0; |
1162 | 0 | size_t calculated_base16_stream_size = 0; |
1163 | 0 | size_t number_of_characters = 0; |
1164 | 0 | size_t safe_base16_stream_index = 0; |
1165 | 0 | size_t whitespace_size = 0; |
1166 | 0 | uint32_t a_character_value = 0; |
1167 | 0 | uint32_t base16_character = 0; |
1168 | 0 | uint8_t character_limit = 0; |
1169 | |
|
1170 | 0 | if( base16_stream == NULL ) |
1171 | 0 | { |
1172 | 0 | libcerror_error_set( |
1173 | 0 | error, |
1174 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1175 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1176 | 0 | "%s: invalid base16 stream.", |
1177 | 0 | function ); |
1178 | |
|
1179 | 0 | return( -1 ); |
1180 | 0 | } |
1181 | 0 | if( base16_stream_size > (size_t) SSIZE_MAX ) |
1182 | 0 | { |
1183 | 0 | libcerror_error_set( |
1184 | 0 | error, |
1185 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1186 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
1187 | 0 | "%s: invalid base16 stream size value exceeds maximum.", |
1188 | 0 | function ); |
1189 | |
|
1190 | 0 | return( -1 ); |
1191 | 0 | } |
1192 | 0 | if( base16_stream_index == NULL ) |
1193 | 0 | { |
1194 | 0 | libcerror_error_set( |
1195 | 0 | error, |
1196 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1197 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1198 | 0 | "%s: invalid base16 stream index.", |
1199 | 0 | function ); |
1200 | |
|
1201 | 0 | return( -1 ); |
1202 | 0 | } |
1203 | 0 | if( *base16_stream_index >= base16_stream_size ) |
1204 | 0 | { |
1205 | 0 | libcerror_error_set( |
1206 | 0 | error, |
1207 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1208 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1209 | 0 | "%s: base16 stream string too small.", |
1210 | 0 | function ); |
1211 | |
|
1212 | 0 | return( -1 ); |
1213 | 0 | } |
1214 | 0 | if( byte_stream == NULL ) |
1215 | 0 | { |
1216 | 0 | libcerror_error_set( |
1217 | 0 | error, |
1218 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1219 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1220 | 0 | "%s: invalid byte stream.", |
1221 | 0 | function ); |
1222 | |
|
1223 | 0 | return( -1 ); |
1224 | 0 | } |
1225 | 0 | if( byte_stream_size > (size_t) SSIZE_MAX ) |
1226 | 0 | { |
1227 | 0 | libcerror_error_set( |
1228 | 0 | error, |
1229 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1230 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
1231 | 0 | "%s: invalid byte stream size value exceeds maximum.", |
1232 | 0 | function ); |
1233 | |
|
1234 | 0 | return( -1 ); |
1235 | 0 | } |
1236 | 0 | switch( base16_variant & 0x000000ffUL ) |
1237 | 0 | { |
1238 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_NONE: |
1239 | 0 | character_limit = 0; |
1240 | 0 | break; |
1241 | | |
1242 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_64: |
1243 | 0 | character_limit = 64; |
1244 | 0 | break; |
1245 | | |
1246 | 0 | case LIBUNA_BASE16_VARIANT_CHARACTER_LIMIT_76: |
1247 | 0 | character_limit = 76; |
1248 | 0 | break; |
1249 | | |
1250 | 0 | default: |
1251 | 0 | libcerror_error_set( |
1252 | 0 | error, |
1253 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1254 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1255 | 0 | "%s: unsupported base16 variant.", |
1256 | 0 | function ); |
1257 | |
|
1258 | 0 | return( -1 ); |
1259 | 0 | } |
1260 | 0 | switch( base16_variant & 0x000f0000UL ) |
1261 | 0 | { |
1262 | 0 | case LIBUNA_BASE16_VARIANT_CASE_LOWER: |
1263 | 0 | a_character_value = (uint32_t) 'a' - 10; |
1264 | 0 | break; |
1265 | | |
1266 | 0 | case LIBUNA_BASE16_VARIANT_CASE_MIXED: |
1267 | 0 | case LIBUNA_BASE16_VARIANT_CASE_UPPER: |
1268 | 0 | a_character_value = (uint32_t) 'A' - 10; |
1269 | 0 | break; |
1270 | | |
1271 | 0 | default: |
1272 | 0 | libcerror_error_set( |
1273 | 0 | error, |
1274 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1275 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1276 | 0 | "%s: unsupported base16 variant.", |
1277 | 0 | function ); |
1278 | |
|
1279 | 0 | return( -1 ); |
1280 | 0 | } |
1281 | 0 | switch( base16_variant & 0xf0000000UL ) |
1282 | 0 | { |
1283 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_BYTE_STREAM: |
1284 | 0 | base16_character_size = 1; |
1285 | 0 | break; |
1286 | | |
1287 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1288 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1289 | 0 | base16_character_size = 2; |
1290 | 0 | break; |
1291 | | |
1292 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1293 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1294 | 0 | base16_character_size = 4; |
1295 | 0 | break; |
1296 | | |
1297 | 0 | default: |
1298 | 0 | libcerror_error_set( |
1299 | 0 | error, |
1300 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1301 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1302 | 0 | "%s: unsupported base16 variant.", |
1303 | 0 | function ); |
1304 | |
|
1305 | 0 | return( -1 ); |
1306 | 0 | } |
1307 | 0 | safe_base16_stream_index = *base16_stream_index; |
1308 | | |
1309 | | /* Make sure the base16 stream is able to hold |
1310 | | * at least 2 bytes for each byte |
1311 | | */ |
1312 | 0 | calculated_base16_stream_size = byte_stream_size * 2; |
1313 | |
|
1314 | 0 | if( character_limit != 0 ) |
1315 | 0 | { |
1316 | 0 | whitespace_size = calculated_base16_stream_size / character_limit; |
1317 | |
|
1318 | 0 | if( ( calculated_base16_stream_size % character_limit ) != 0 ) |
1319 | 0 | { |
1320 | 0 | whitespace_size += 1; |
1321 | 0 | } |
1322 | 0 | calculated_base16_stream_size += whitespace_size; |
1323 | 0 | } |
1324 | 0 | calculated_base16_stream_size *= base16_character_size; |
1325 | |
|
1326 | 0 | if( base16_stream_size < calculated_base16_stream_size ) |
1327 | 0 | { |
1328 | 0 | libcerror_error_set( |
1329 | 0 | error, |
1330 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1331 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1332 | 0 | "%s: base16 stream is too small.", |
1333 | 0 | function ); |
1334 | |
|
1335 | 0 | return( -1 ); |
1336 | 0 | } |
1337 | 0 | while( byte_stream_index < byte_stream_size ) |
1338 | 0 | { |
1339 | 0 | base16_character = byte_stream[ byte_stream_index ] >> 4; |
1340 | |
|
1341 | 0 | if( base16_character <= 9 ) |
1342 | 0 | { |
1343 | 0 | base16_character += (uint32_t) '0'; |
1344 | 0 | } |
1345 | 0 | else |
1346 | 0 | { |
1347 | 0 | base16_character += a_character_value; |
1348 | 0 | } |
1349 | 0 | switch( base16_variant & 0xf0000000UL ) |
1350 | 0 | { |
1351 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_BYTE_STREAM: |
1352 | 0 | base16_stream[ safe_base16_stream_index ] = (uint8_t) base16_character; |
1353 | 0 | break; |
1354 | | |
1355 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1356 | 0 | byte_stream_copy_from_uint16_big_endian( |
1357 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1358 | 0 | base16_character ); |
1359 | 0 | break; |
1360 | | |
1361 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1362 | 0 | byte_stream_copy_from_uint16_little_endian( |
1363 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1364 | 0 | base16_character ); |
1365 | 0 | break; |
1366 | | |
1367 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1368 | 0 | byte_stream_copy_from_uint32_big_endian( |
1369 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1370 | 0 | base16_character ); |
1371 | 0 | break; |
1372 | | |
1373 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1374 | 0 | byte_stream_copy_from_uint32_little_endian( |
1375 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1376 | 0 | base16_character ); |
1377 | 0 | break; |
1378 | 0 | } |
1379 | 0 | safe_base16_stream_index += base16_character_size; |
1380 | |
|
1381 | 0 | base16_character = byte_stream[ byte_stream_index ] & 0x0f; |
1382 | |
|
1383 | 0 | if( base16_character <= 9 ) |
1384 | 0 | { |
1385 | 0 | base16_character += (uint32_t) '0'; |
1386 | 0 | } |
1387 | 0 | else |
1388 | 0 | { |
1389 | 0 | base16_character += a_character_value; |
1390 | 0 | } |
1391 | 0 | switch( base16_variant & 0xf0000000UL ) |
1392 | 0 | { |
1393 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_BYTE_STREAM: |
1394 | 0 | base16_stream[ safe_base16_stream_index ] = (uint8_t) base16_character; |
1395 | 0 | break; |
1396 | | |
1397 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1398 | 0 | byte_stream_copy_from_uint16_big_endian( |
1399 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1400 | 0 | base16_character ); |
1401 | 0 | break; |
1402 | | |
1403 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1404 | 0 | byte_stream_copy_from_uint16_little_endian( |
1405 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1406 | 0 | base16_character ); |
1407 | 0 | break; |
1408 | | |
1409 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1410 | 0 | byte_stream_copy_from_uint32_big_endian( |
1411 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1412 | 0 | base16_character ); |
1413 | 0 | break; |
1414 | | |
1415 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1416 | 0 | byte_stream_copy_from_uint32_little_endian( |
1417 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1418 | 0 | base16_character ); |
1419 | 0 | break; |
1420 | 0 | } |
1421 | 0 | safe_base16_stream_index += base16_character_size; |
1422 | |
|
1423 | 0 | if( character_limit != 0 ) |
1424 | 0 | { |
1425 | 0 | number_of_characters += 2; |
1426 | |
|
1427 | 0 | if( number_of_characters >= (size_t) character_limit ) |
1428 | 0 | { |
1429 | 0 | base16_character = (uint32_t) '\n'; |
1430 | |
|
1431 | 0 | switch( base16_variant & 0xf0000000UL ) |
1432 | 0 | { |
1433 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_BYTE_STREAM: |
1434 | 0 | base16_stream[ safe_base16_stream_index ] = (uint8_t) base16_character; |
1435 | 0 | break; |
1436 | | |
1437 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1438 | 0 | byte_stream_copy_from_uint16_big_endian( |
1439 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1440 | 0 | base16_character ); |
1441 | 0 | break; |
1442 | | |
1443 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1444 | 0 | byte_stream_copy_from_uint16_little_endian( |
1445 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1446 | 0 | base16_character ); |
1447 | 0 | break; |
1448 | | |
1449 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1450 | 0 | byte_stream_copy_from_uint32_big_endian( |
1451 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1452 | 0 | base16_character ); |
1453 | 0 | break; |
1454 | | |
1455 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1456 | 0 | byte_stream_copy_from_uint32_little_endian( |
1457 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1458 | 0 | base16_character ); |
1459 | 0 | break; |
1460 | 0 | } |
1461 | 0 | safe_base16_stream_index += base16_character_size; |
1462 | |
|
1463 | 0 | number_of_characters = 0; |
1464 | 0 | } |
1465 | 0 | } |
1466 | 0 | byte_stream_index++; |
1467 | 0 | } |
1468 | 0 | if( character_limit != 0 ) |
1469 | 0 | { |
1470 | 0 | if( number_of_characters != 0 ) |
1471 | 0 | { |
1472 | 0 | base16_character = (uint32_t) '\n'; |
1473 | |
|
1474 | 0 | switch( base16_variant & 0xf0000000UL ) |
1475 | 0 | { |
1476 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_BYTE_STREAM: |
1477 | 0 | base16_stream[ safe_base16_stream_index ] = (uint8_t) base16_character; |
1478 | 0 | break; |
1479 | | |
1480 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1481 | 0 | byte_stream_copy_from_uint16_big_endian( |
1482 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1483 | 0 | base16_character ); |
1484 | 0 | break; |
1485 | | |
1486 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1487 | 0 | byte_stream_copy_from_uint16_little_endian( |
1488 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1489 | 0 | base16_character ); |
1490 | 0 | break; |
1491 | | |
1492 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1493 | 0 | byte_stream_copy_from_uint32_big_endian( |
1494 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1495 | 0 | base16_character ); |
1496 | 0 | break; |
1497 | | |
1498 | 0 | case LIBUNA_BASE16_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1499 | 0 | byte_stream_copy_from_uint32_little_endian( |
1500 | 0 | &( base16_stream[ safe_base16_stream_index ] ), |
1501 | 0 | base16_character ); |
1502 | 0 | break; |
1503 | 0 | } |
1504 | 0 | safe_base16_stream_index += base16_character_size; |
1505 | 0 | } |
1506 | 0 | } |
1507 | 0 | *base16_stream_index = safe_base16_stream_index; |
1508 | |
|
1509 | 0 | return( 1 ); |
1510 | 0 | } |
1511 | | |