/src/libmsiecf/libuna/libuna_base32_stream.c
Line | Count | Source (jump to first uncovered line) |
1 | | /* |
2 | | * Base32 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_base32_stream.h" |
27 | | #include "libuna_definitions.h" |
28 | | #include "libuna_libcerror.h" |
29 | | #include "libuna_types.h" |
30 | | |
31 | | static uint8_t libuna_base32_quintet_to_character_table[ 32 ] = { |
32 | | 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', |
33 | | 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z', '2', '3', '4', '5', '6', '7' }; |
34 | | |
35 | | static uint8_t libuna_base32hex_quintet_to_character_table[ 32 ] = { |
36 | | '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F', |
37 | | 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V' }; |
38 | | |
39 | | /* Copies a base32 character to a base32 quintet |
40 | | * Returns 1 if successful or -1 on error |
41 | | */ |
42 | | int libuna_base32_character_copy_to_quintet( |
43 | | uint8_t base32_character, |
44 | | uint8_t *base32_quintet, |
45 | | uint32_t base32_variant, |
46 | | libcerror_error_t **error ) |
47 | 0 | { |
48 | 0 | static char *function = "libuna_base32_character_copy_to_quintet"; |
49 | 0 | uint8_t safe_base32_quintet = 0; |
50 | |
|
51 | 0 | if( base32_quintet == NULL ) |
52 | 0 | { |
53 | 0 | libcerror_error_set( |
54 | 0 | error, |
55 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
56 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
57 | 0 | "%s: invalid base32 quintet.", |
58 | 0 | function ); |
59 | |
|
60 | 0 | return( -1 ); |
61 | 0 | } |
62 | 0 | switch( base32_variant & 0x000f0000UL ) |
63 | 0 | { |
64 | 0 | case LIBUNA_BASE32_VARIANT_ALPHABET_NORMAL: |
65 | | /* A-Z is not a continous range on an EBCDIC based system |
66 | | * it consists of the ranges: A-I, J-R, S-Z |
67 | | */ |
68 | 0 | if( ( base32_character >= (uint8_t) 'A' ) |
69 | 0 | && ( base32_character <= (uint8_t) 'I' ) ) |
70 | 0 | { |
71 | 0 | safe_base32_quintet = base32_character - (uint8_t) 'A'; |
72 | 0 | } |
73 | 0 | else if( ( base32_character >= (uint8_t) 'J' ) |
74 | 0 | && ( base32_character <= (uint8_t) 'R' ) ) |
75 | 0 | { |
76 | 0 | safe_base32_quintet = base32_character - (uint8_t) 'J' + 9; |
77 | 0 | } |
78 | 0 | else if( ( base32_character >= (uint8_t) 'S' ) |
79 | 0 | && ( base32_character <= (uint8_t) 'Z' ) ) |
80 | 0 | { |
81 | 0 | safe_base32_quintet = base32_character - (uint8_t) 'S' + 18; |
82 | 0 | } |
83 | 0 | else if( ( base32_character >= (uint8_t) '2' ) |
84 | 0 | && ( base32_character <= (uint8_t) '7' ) ) |
85 | 0 | { |
86 | 0 | safe_base32_quintet = base32_character - (uint8_t) '2' + 26; |
87 | 0 | } |
88 | 0 | else |
89 | 0 | { |
90 | 0 | libcerror_error_set( |
91 | 0 | error, |
92 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
93 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
94 | 0 | "%s: invalid base32 character: 0x%02" PRIx8 ".", |
95 | 0 | function, |
96 | 0 | base32_character ); |
97 | |
|
98 | 0 | return( -1 ); |
99 | 0 | } |
100 | 0 | break; |
101 | | |
102 | 0 | case LIBUNA_BASE32_VARIANT_ALPHABET_HEX: |
103 | 0 | if( ( base32_character >= (uint8_t) '0' ) |
104 | 0 | && ( base32_character <= (uint8_t) '9' ) ) |
105 | 0 | { |
106 | 0 | safe_base32_quintet = base32_character - (uint8_t) '0'; |
107 | 0 | } |
108 | | /* A-V is not a continous range on an EBCDIC based system |
109 | | * it consists of the ranges: A-I, J-R, S-V |
110 | | */ |
111 | 0 | else if( ( base32_character >= (uint8_t) 'A' ) |
112 | 0 | && ( base32_character <= (uint8_t) 'I' ) ) |
113 | 0 | { |
114 | 0 | safe_base32_quintet = base32_character - (uint8_t) 'A' + 10; |
115 | 0 | } |
116 | 0 | else if( ( base32_character >= (uint8_t) 'J' ) |
117 | 0 | && ( base32_character <= (uint8_t) 'R' ) ) |
118 | 0 | { |
119 | 0 | safe_base32_quintet = base32_character - (uint8_t) 'J' + 19; |
120 | 0 | } |
121 | 0 | else if( ( base32_character >= (uint8_t) 'S' ) |
122 | 0 | && ( base32_character <= (uint8_t) 'V' ) ) |
123 | 0 | { |
124 | 0 | safe_base32_quintet = base32_character - (uint8_t) 'S' + 27; |
125 | 0 | } |
126 | 0 | else |
127 | 0 | { |
128 | 0 | libcerror_error_set( |
129 | 0 | error, |
130 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
131 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
132 | 0 | "%s: invalid base32 character: 0x%02" PRIx8 ".", |
133 | 0 | function, |
134 | 0 | base32_character ); |
135 | |
|
136 | 0 | return( -1 ); |
137 | 0 | } |
138 | 0 | break; |
139 | | |
140 | 0 | default: |
141 | 0 | libcerror_error_set( |
142 | 0 | error, |
143 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
144 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
145 | 0 | "%s: unsupported base32 variant.", |
146 | 0 | function ); |
147 | |
|
148 | 0 | return( -1 ); |
149 | 0 | } |
150 | 0 | *base32_quintet = safe_base32_quintet; |
151 | |
|
152 | 0 | return( 1 ); |
153 | 0 | } |
154 | | |
155 | | /* Copies a base32 quintuplet from a base32 stream |
156 | | * |
157 | | * The padding size will still be set to indicate the number of |
158 | | * quintets in the quintuplet |
159 | | * |
160 | | * Returns 1 if successful or -1 on error |
161 | | */ |
162 | | int libuna_base32_quintuplet_copy_from_base32_stream( |
163 | | uint64_t *base32_quintuplet, |
164 | | const uint8_t *base32_stream, |
165 | | size_t base32_stream_size, |
166 | | size_t *base32_stream_index, |
167 | | uint8_t *padding_size, |
168 | | uint32_t base32_variant, |
169 | | libcerror_error_t **error ) |
170 | 0 | { |
171 | 0 | static char *function = "libuna_base32_quintuplet_copy_from_base32_stream"; |
172 | 0 | size_t base32_character_size = 0; |
173 | 0 | size_t safe_base32_stream_index = 0; |
174 | 0 | uint64_t safe_base32_quintuplet = 0; |
175 | 0 | uint32_t base32_character1 = 0; |
176 | 0 | uint32_t base32_character2 = 0; |
177 | 0 | uint8_t quintet1 = 0; |
178 | 0 | uint8_t quintet2 = 0; |
179 | 0 | uint8_t quintet3 = 0; |
180 | 0 | uint8_t quintet4 = 0; |
181 | 0 | uint8_t quintet5 = 0; |
182 | 0 | uint8_t quintet6 = 0; |
183 | 0 | uint8_t quintet7 = 0; |
184 | 0 | uint8_t quintet8 = 0; |
185 | 0 | uint8_t safe_padding_size = 0; |
186 | |
|
187 | 0 | if( base32_quintuplet == NULL ) |
188 | 0 | { |
189 | 0 | libcerror_error_set( |
190 | 0 | error, |
191 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
192 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
193 | 0 | "%s: invalid base32 quintuplet.", |
194 | 0 | function ); |
195 | |
|
196 | 0 | return( -1 ); |
197 | 0 | } |
198 | 0 | if( base32_stream == NULL ) |
199 | 0 | { |
200 | 0 | libcerror_error_set( |
201 | 0 | error, |
202 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
203 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
204 | 0 | "%s: invalid base32 stream.", |
205 | 0 | function ); |
206 | |
|
207 | 0 | return( -1 ); |
208 | 0 | } |
209 | 0 | if( base32_stream_size > (size_t) SSIZE_MAX ) |
210 | 0 | { |
211 | 0 | libcerror_error_set( |
212 | 0 | error, |
213 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
214 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
215 | 0 | "%s: invalid base32 stream size value exceeds maximum.", |
216 | 0 | function ); |
217 | |
|
218 | 0 | return( -1 ); |
219 | 0 | } |
220 | 0 | if( base32_stream_index == NULL ) |
221 | 0 | { |
222 | 0 | libcerror_error_set( |
223 | 0 | error, |
224 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
225 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
226 | 0 | "%s: invalid base32 stream index.", |
227 | 0 | function ); |
228 | |
|
229 | 0 | return( -1 ); |
230 | 0 | } |
231 | 0 | if( *base32_stream_index >= base32_stream_size ) |
232 | 0 | { |
233 | 0 | libcerror_error_set( |
234 | 0 | error, |
235 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
236 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
237 | 0 | "%s: base32 stream string too small.", |
238 | 0 | function ); |
239 | |
|
240 | 0 | return( -1 ); |
241 | 0 | } |
242 | 0 | if( padding_size == NULL ) |
243 | 0 | { |
244 | 0 | libcerror_error_set( |
245 | 0 | error, |
246 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
247 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
248 | 0 | "%s: invalid padding size.", |
249 | 0 | function ); |
250 | |
|
251 | 0 | return( -1 ); |
252 | 0 | } |
253 | 0 | switch( base32_variant & 0x0f000000UL ) |
254 | 0 | { |
255 | 0 | case LIBUNA_BASE32_VARIANT_PADDING_NONE: |
256 | 0 | case LIBUNA_BASE32_VARIANT_PADDING_OPTIONAL: |
257 | 0 | case LIBUNA_BASE32_VARIANT_PADDING_REQUIRED: |
258 | 0 | break; |
259 | | |
260 | 0 | default: |
261 | 0 | libcerror_error_set( |
262 | 0 | error, |
263 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
264 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
265 | 0 | "%s: unsupported base32 variant.", |
266 | 0 | function ); |
267 | |
|
268 | 0 | return( -1 ); |
269 | 0 | } |
270 | 0 | switch( base32_variant & 0xf0000000UL ) |
271 | 0 | { |
272 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
273 | 0 | base32_character_size = 1; |
274 | 0 | break; |
275 | | |
276 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
277 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
278 | 0 | base32_character_size = 2; |
279 | 0 | break; |
280 | | |
281 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
282 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
283 | 0 | base32_character_size = 4; |
284 | 0 | break; |
285 | | |
286 | 0 | default: |
287 | 0 | libcerror_error_set( |
288 | 0 | error, |
289 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
290 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
291 | 0 | "%s: unsupported base32 variant.", |
292 | 0 | function ); |
293 | |
|
294 | 0 | return( -1 ); |
295 | 0 | } |
296 | 0 | safe_base32_stream_index = *base32_stream_index; |
297 | |
|
298 | 0 | if( base32_character_size > ( base32_stream_size - safe_base32_stream_index ) ) |
299 | 0 | { |
300 | 0 | libcerror_error_set( |
301 | 0 | error, |
302 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
303 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
304 | 0 | "%s: missing 1st base32 character.", |
305 | 0 | function ); |
306 | |
|
307 | 0 | return( -1 ); |
308 | 0 | } |
309 | 0 | switch( base32_variant & 0xf0000000UL ) |
310 | 0 | { |
311 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
312 | 0 | base32_character1 = base32_stream[ safe_base32_stream_index ]; |
313 | 0 | break; |
314 | | |
315 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
316 | 0 | byte_stream_copy_to_uint16_big_endian( |
317 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
318 | 0 | base32_character1 ); |
319 | 0 | break; |
320 | | |
321 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
322 | 0 | byte_stream_copy_to_uint16_little_endian( |
323 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
324 | 0 | base32_character1 ); |
325 | 0 | break; |
326 | | |
327 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
328 | 0 | byte_stream_copy_to_uint32_big_endian( |
329 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
330 | 0 | base32_character1 ); |
331 | 0 | break; |
332 | | |
333 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
334 | 0 | byte_stream_copy_to_uint32_little_endian( |
335 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
336 | 0 | base32_character1 ); |
337 | 0 | break; |
338 | 0 | } |
339 | 0 | safe_base32_stream_index += base32_character_size; |
340 | |
|
341 | 0 | if( ( base32_character1 & 0xffffff00UL ) != 0 ) |
342 | 0 | { |
343 | 0 | libcerror_error_set( |
344 | 0 | error, |
345 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
346 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
347 | 0 | "%s: invalid 1st base32 character.", |
348 | 0 | function ); |
349 | |
|
350 | 0 | return( -1 ); |
351 | 0 | } |
352 | 0 | if( libuna_base32_character_copy_to_quintet( |
353 | 0 | (uint8_t) base32_character1, |
354 | 0 | &quintet1, |
355 | 0 | base32_variant, |
356 | 0 | error ) != 1 ) |
357 | 0 | { |
358 | 0 | libcerror_error_set( |
359 | 0 | error, |
360 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
361 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
362 | 0 | "%s: unable to copy base32 character to 1st quintet.", |
363 | 0 | function ); |
364 | |
|
365 | 0 | return( -1 ); |
366 | 0 | } |
367 | 0 | if( base32_character_size > ( base32_stream_size - safe_base32_stream_index ) ) |
368 | 0 | { |
369 | 0 | libcerror_error_set( |
370 | 0 | error, |
371 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
372 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
373 | 0 | "%s: missing 2nd base32 character.", |
374 | 0 | function ); |
375 | |
|
376 | 0 | return( -1 ); |
377 | 0 | } |
378 | 0 | switch( base32_variant & 0xf0000000UL ) |
379 | 0 | { |
380 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
381 | 0 | base32_character1 = base32_stream[ safe_base32_stream_index ]; |
382 | 0 | break; |
383 | | |
384 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
385 | 0 | byte_stream_copy_to_uint16_big_endian( |
386 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
387 | 0 | base32_character1 ); |
388 | 0 | break; |
389 | | |
390 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
391 | 0 | byte_stream_copy_to_uint16_little_endian( |
392 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
393 | 0 | base32_character1 ); |
394 | 0 | break; |
395 | | |
396 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
397 | 0 | byte_stream_copy_to_uint32_big_endian( |
398 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
399 | 0 | base32_character1 ); |
400 | 0 | break; |
401 | | |
402 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
403 | 0 | byte_stream_copy_to_uint32_little_endian( |
404 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
405 | 0 | base32_character1 ); |
406 | 0 | break; |
407 | 0 | } |
408 | 0 | safe_base32_stream_index += base32_character_size; |
409 | |
|
410 | 0 | if( ( base32_character1 & 0xffffff00UL ) != 0 ) |
411 | 0 | { |
412 | 0 | libcerror_error_set( |
413 | 0 | error, |
414 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
415 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
416 | 0 | "%s: invalid 2nd base32 character.", |
417 | 0 | function ); |
418 | |
|
419 | 0 | return( -1 ); |
420 | 0 | } |
421 | 0 | if( libuna_base32_character_copy_to_quintet( |
422 | 0 | (uint8_t) base32_character1, |
423 | 0 | &quintet2, |
424 | 0 | base32_variant, |
425 | 0 | error ) != 1 ) |
426 | 0 | { |
427 | 0 | libcerror_error_set( |
428 | 0 | error, |
429 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
430 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
431 | 0 | "%s: unable to copy base32 character to 2nd quintet.", |
432 | 0 | function ); |
433 | |
|
434 | 0 | return( -1 ); |
435 | 0 | } |
436 | 0 | safe_padding_size = 6; |
437 | |
|
438 | 0 | if( ( 2 * base32_character_size ) <= ( base32_stream_size - safe_base32_stream_index ) ) |
439 | 0 | { |
440 | 0 | switch( base32_variant & 0xf0000000UL ) |
441 | 0 | { |
442 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
443 | 0 | base32_character1 = base32_stream[ safe_base32_stream_index ]; |
444 | 0 | base32_character2 = base32_stream[ safe_base32_stream_index + 1 ]; |
445 | 0 | break; |
446 | | |
447 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
448 | 0 | byte_stream_copy_to_uint16_big_endian( |
449 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
450 | 0 | base32_character1 ); |
451 | |
|
452 | 0 | byte_stream_copy_to_uint16_big_endian( |
453 | 0 | &( base32_stream[ safe_base32_stream_index + 2 ] ), |
454 | 0 | base32_character2 ); |
455 | 0 | break; |
456 | | |
457 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
458 | 0 | byte_stream_copy_to_uint16_little_endian( |
459 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
460 | 0 | base32_character1 ); |
461 | |
|
462 | 0 | byte_stream_copy_to_uint16_little_endian( |
463 | 0 | &( base32_stream[ safe_base32_stream_index + 2 ] ), |
464 | 0 | base32_character2 ); |
465 | 0 | break; |
466 | | |
467 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
468 | 0 | byte_stream_copy_to_uint32_big_endian( |
469 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
470 | 0 | base32_character1 ); |
471 | |
|
472 | 0 | byte_stream_copy_to_uint32_big_endian( |
473 | 0 | &( base32_stream[ safe_base32_stream_index + 4 ] ), |
474 | 0 | base32_character2 ); |
475 | 0 | break; |
476 | | |
477 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
478 | 0 | byte_stream_copy_to_uint32_little_endian( |
479 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
480 | 0 | base32_character1 ); |
481 | |
|
482 | 0 | byte_stream_copy_to_uint32_little_endian( |
483 | 0 | &( base32_stream[ safe_base32_stream_index + 4 ] ), |
484 | 0 | base32_character2 ); |
485 | 0 | break; |
486 | 0 | } |
487 | 0 | safe_base32_stream_index += 2 * base32_character_size; |
488 | |
|
489 | 0 | if( ( base32_character1 & 0xffffff00UL ) != 0 ) |
490 | 0 | { |
491 | 0 | libcerror_error_set( |
492 | 0 | error, |
493 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
494 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
495 | 0 | "%s: invalid 3rd base32 character.", |
496 | 0 | function ); |
497 | |
|
498 | 0 | return( -1 ); |
499 | 0 | } |
500 | 0 | if( ( base32_character2 & 0xffffff00UL ) != 0 ) |
501 | 0 | { |
502 | 0 | libcerror_error_set( |
503 | 0 | error, |
504 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
505 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
506 | 0 | "%s: invalid 4th base32 character.", |
507 | 0 | function ); |
508 | |
|
509 | 0 | return( -1 ); |
510 | 0 | } |
511 | 0 | if( ( base32_character1 == (uint32_t) '=' ) |
512 | 0 | || ( base32_character2 == (uint32_t) '=' ) ) |
513 | 0 | { |
514 | 0 | if( ( base32_variant & 0x0f000000UL ) == LIBUNA_BASE32_VARIANT_PADDING_NONE ) |
515 | 0 | { |
516 | 0 | libcerror_error_set( |
517 | 0 | error, |
518 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
519 | 0 | LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE, |
520 | 0 | "%s: padding where not supposed to - invalid 3rd or 4th base32 character.", |
521 | 0 | function ); |
522 | |
|
523 | 0 | return( -1 ); |
524 | 0 | } |
525 | 0 | if( base32_character1 != (uint32_t) '=' ) |
526 | 0 | { |
527 | 0 | libcerror_error_set( |
528 | 0 | error, |
529 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
530 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
531 | 0 | "%s: invalid 3rd base32 character.", |
532 | 0 | function ); |
533 | |
|
534 | 0 | return( -1 ); |
535 | 0 | } |
536 | 0 | if( base32_character2 != (uint32_t) '=' ) |
537 | 0 | { |
538 | 0 | libcerror_error_set( |
539 | 0 | error, |
540 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
541 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
542 | 0 | "%s: invalid 4th base32 character.", |
543 | 0 | function ); |
544 | |
|
545 | 0 | return( -1 ); |
546 | 0 | } |
547 | 0 | } |
548 | 0 | else |
549 | 0 | { |
550 | 0 | if( libuna_base32_character_copy_to_quintet( |
551 | 0 | (uint8_t) base32_character1, |
552 | 0 | &quintet3, |
553 | 0 | base32_variant, |
554 | 0 | error ) != 1 ) |
555 | 0 | { |
556 | 0 | libcerror_error_set( |
557 | 0 | error, |
558 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
559 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
560 | 0 | "%s: invalid 3rd base32 quintet.", |
561 | 0 | function ); |
562 | |
|
563 | 0 | return( -1 ); |
564 | 0 | } |
565 | 0 | if( libuna_base32_character_copy_to_quintet( |
566 | 0 | (uint8_t) base32_character2, |
567 | 0 | &quintet4, |
568 | 0 | base32_variant, |
569 | 0 | error ) != 1 ) |
570 | 0 | { |
571 | 0 | libcerror_error_set( |
572 | 0 | error, |
573 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
574 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
575 | 0 | "%s: invalid 4th base32 quintet.", |
576 | 0 | function ); |
577 | |
|
578 | 0 | return( -1 ); |
579 | 0 | } |
580 | 0 | safe_padding_size -= 2; |
581 | 0 | } |
582 | 0 | } |
583 | 0 | else if( ( base32_variant & 0x0f000000UL ) != LIBUNA_BASE32_VARIANT_PADDING_NONE ) |
584 | 0 | { |
585 | 0 | libcerror_error_set( |
586 | 0 | error, |
587 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
588 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
589 | 0 | "%s: missing 3rd or 4th base32 character.", |
590 | 0 | function ); |
591 | |
|
592 | 0 | return( -1 ); |
593 | 0 | } |
594 | 0 | if( base32_character_size <= ( base32_stream_size - safe_base32_stream_index ) ) |
595 | 0 | { |
596 | 0 | switch( base32_variant & 0xf0000000UL ) |
597 | 0 | { |
598 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
599 | 0 | base32_character1 = base32_stream[ safe_base32_stream_index ]; |
600 | 0 | break; |
601 | | |
602 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
603 | 0 | byte_stream_copy_to_uint16_big_endian( |
604 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
605 | 0 | base32_character1 ); |
606 | 0 | break; |
607 | | |
608 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
609 | 0 | byte_stream_copy_to_uint16_little_endian( |
610 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
611 | 0 | base32_character1 ); |
612 | 0 | break; |
613 | | |
614 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
615 | 0 | byte_stream_copy_to_uint32_big_endian( |
616 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
617 | 0 | base32_character1 ); |
618 | 0 | break; |
619 | | |
620 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
621 | 0 | byte_stream_copy_to_uint32_little_endian( |
622 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
623 | 0 | base32_character1 ); |
624 | 0 | break; |
625 | 0 | } |
626 | 0 | safe_base32_stream_index += base32_character_size; |
627 | |
|
628 | 0 | if( ( base32_character1 & 0xffffff00UL ) != 0 ) |
629 | 0 | { |
630 | 0 | libcerror_error_set( |
631 | 0 | error, |
632 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
633 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
634 | 0 | "%s: invalid 5th base32 character.", |
635 | 0 | function ); |
636 | |
|
637 | 0 | return( -1 ); |
638 | 0 | } |
639 | 0 | if( base32_character1 == (uint32_t) '=' ) |
640 | 0 | { |
641 | 0 | if( ( base32_variant & 0x0f000000UL ) == LIBUNA_BASE32_VARIANT_PADDING_NONE ) |
642 | 0 | { |
643 | 0 | libcerror_error_set( |
644 | 0 | error, |
645 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
646 | 0 | LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE, |
647 | 0 | "%s: padding where not supposed to - invalid 5th base32 character.", |
648 | 0 | function ); |
649 | |
|
650 | 0 | return( -1 ); |
651 | 0 | } |
652 | 0 | } |
653 | 0 | else |
654 | 0 | { |
655 | 0 | if( safe_padding_size > 4 ) |
656 | 0 | { |
657 | 0 | libcerror_error_set( |
658 | 0 | error, |
659 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
660 | 0 | LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE, |
661 | 0 | "%s: non-padding where not supposed to - invalid 5th base32 character.", |
662 | 0 | function ); |
663 | |
|
664 | 0 | return( -1 ); |
665 | 0 | } |
666 | 0 | if( libuna_base32_character_copy_to_quintet( |
667 | 0 | (uint8_t) base32_character1, |
668 | 0 | &quintet5, |
669 | 0 | base32_variant, |
670 | 0 | error ) != 1 ) |
671 | 0 | { |
672 | 0 | libcerror_error_set( |
673 | 0 | error, |
674 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
675 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
676 | 0 | "%s: invalid 5th base32 quintet.", |
677 | 0 | function ); |
678 | |
|
679 | 0 | return( -1 ); |
680 | 0 | } |
681 | 0 | safe_padding_size -= 1; |
682 | 0 | } |
683 | 0 | } |
684 | 0 | else if( ( base32_variant & 0x0f000000UL ) != LIBUNA_BASE32_VARIANT_PADDING_NONE ) |
685 | 0 | { |
686 | 0 | libcerror_error_set( |
687 | 0 | error, |
688 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
689 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
690 | 0 | "%s: missing 5th base32 character.", |
691 | 0 | function ); |
692 | |
|
693 | 0 | return( -1 ); |
694 | 0 | } |
695 | 0 | if( ( 2 * base32_character_size ) <= ( base32_stream_size - safe_base32_stream_index ) ) |
696 | 0 | { |
697 | 0 | switch( base32_variant & 0xf0000000UL ) |
698 | 0 | { |
699 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
700 | 0 | base32_character1 = base32_stream[ safe_base32_stream_index ]; |
701 | 0 | base32_character2 = base32_stream[ safe_base32_stream_index + 1 ]; |
702 | 0 | break; |
703 | | |
704 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
705 | 0 | byte_stream_copy_to_uint16_big_endian( |
706 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
707 | 0 | base32_character1 ); |
708 | |
|
709 | 0 | byte_stream_copy_to_uint16_big_endian( |
710 | 0 | &( base32_stream[ safe_base32_stream_index + 2 ] ), |
711 | 0 | base32_character2 ); |
712 | 0 | break; |
713 | | |
714 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
715 | 0 | byte_stream_copy_to_uint16_little_endian( |
716 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
717 | 0 | base32_character1 ); |
718 | |
|
719 | 0 | byte_stream_copy_to_uint16_little_endian( |
720 | 0 | &( base32_stream[ safe_base32_stream_index + 2 ] ), |
721 | 0 | base32_character2 ); |
722 | 0 | break; |
723 | | |
724 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
725 | 0 | byte_stream_copy_to_uint32_big_endian( |
726 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
727 | 0 | base32_character1 ); |
728 | |
|
729 | 0 | byte_stream_copy_to_uint32_big_endian( |
730 | 0 | &( base32_stream[ safe_base32_stream_index + 4 ] ), |
731 | 0 | base32_character2 ); |
732 | 0 | break; |
733 | | |
734 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
735 | 0 | byte_stream_copy_to_uint32_little_endian( |
736 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
737 | 0 | base32_character1 ); |
738 | |
|
739 | 0 | byte_stream_copy_to_uint32_little_endian( |
740 | 0 | &( base32_stream[ safe_base32_stream_index + 4 ] ), |
741 | 0 | base32_character2 ); |
742 | 0 | break; |
743 | 0 | } |
744 | 0 | safe_base32_stream_index += 2 * base32_character_size; |
745 | |
|
746 | 0 | if( ( base32_character1 & 0xffffff00UL ) != 0 ) |
747 | 0 | { |
748 | 0 | libcerror_error_set( |
749 | 0 | error, |
750 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
751 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
752 | 0 | "%s: invalid 6th base32 character.", |
753 | 0 | function ); |
754 | |
|
755 | 0 | return( -1 ); |
756 | 0 | } |
757 | 0 | if( ( base32_character2 & 0xffffff00UL ) != 0 ) |
758 | 0 | { |
759 | 0 | libcerror_error_set( |
760 | 0 | error, |
761 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
762 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
763 | 0 | "%s: invalid 7th base32 character.", |
764 | 0 | function ); |
765 | |
|
766 | 0 | return( -1 ); |
767 | 0 | } |
768 | 0 | if( ( base32_character1 == (uint32_t) '=' ) |
769 | 0 | || ( base32_character2 == (uint32_t) '=' ) ) |
770 | 0 | { |
771 | 0 | if( ( base32_variant & 0x0f000000UL ) == LIBUNA_BASE32_VARIANT_PADDING_NONE ) |
772 | 0 | { |
773 | 0 | libcerror_error_set( |
774 | 0 | error, |
775 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
776 | 0 | LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE, |
777 | 0 | "%s: padding where not supposed to - invalid 6th or 7th base32 character.", |
778 | 0 | function ); |
779 | |
|
780 | 0 | return( -1 ); |
781 | 0 | } |
782 | 0 | if( base32_character1 != (uint32_t) '=' ) |
783 | 0 | { |
784 | 0 | libcerror_error_set( |
785 | 0 | error, |
786 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
787 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
788 | 0 | "%s: invalid 6th base32 quintet.", |
789 | 0 | function ); |
790 | |
|
791 | 0 | return( -1 ); |
792 | 0 | } |
793 | 0 | if( base32_character2 != (uint32_t) '=' ) |
794 | 0 | { |
795 | 0 | libcerror_error_set( |
796 | 0 | error, |
797 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
798 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
799 | 0 | "%s: invalid 7th base32 quintet.", |
800 | 0 | function ); |
801 | |
|
802 | 0 | return( -1 ); |
803 | 0 | } |
804 | 0 | } |
805 | 0 | else |
806 | 0 | { |
807 | 0 | if( safe_padding_size > 3 ) |
808 | 0 | { |
809 | 0 | libcerror_error_set( |
810 | 0 | error, |
811 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
812 | 0 | LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE, |
813 | 0 | "%s: non-padding where not supposed to - invalid 6th or 7th base32 character.", |
814 | 0 | function ); |
815 | |
|
816 | 0 | return( -1 ); |
817 | 0 | } |
818 | 0 | if( libuna_base32_character_copy_to_quintet( |
819 | 0 | (uint8_t) base32_character1, |
820 | 0 | &quintet6, |
821 | 0 | base32_variant, |
822 | 0 | error ) != 1 ) |
823 | 0 | { |
824 | 0 | libcerror_error_set( |
825 | 0 | error, |
826 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
827 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
828 | 0 | "%s: invalid 6th base32 quintet.", |
829 | 0 | function ); |
830 | |
|
831 | 0 | return( -1 ); |
832 | 0 | } |
833 | 0 | if( libuna_base32_character_copy_to_quintet( |
834 | 0 | (uint8_t) base32_character2, |
835 | 0 | &quintet7, |
836 | 0 | base32_variant, |
837 | 0 | error ) != 1 ) |
838 | 0 | { |
839 | 0 | libcerror_error_set( |
840 | 0 | error, |
841 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
842 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
843 | 0 | "%s: invalid 7th base32 quintet.", |
844 | 0 | function ); |
845 | |
|
846 | 0 | return( -1 ); |
847 | 0 | } |
848 | 0 | safe_padding_size -= 2; |
849 | 0 | } |
850 | 0 | } |
851 | 0 | else if( ( base32_variant & 0x0f000000UL ) != LIBUNA_BASE32_VARIANT_PADDING_NONE ) |
852 | 0 | { |
853 | 0 | libcerror_error_set( |
854 | 0 | error, |
855 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
856 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
857 | 0 | "%s: missing 6th or 7th base32 character.", |
858 | 0 | function ); |
859 | |
|
860 | 0 | return( -1 ); |
861 | 0 | } |
862 | 0 | if( base32_character_size <= ( base32_stream_size - safe_base32_stream_index ) ) |
863 | 0 | { |
864 | 0 | switch( base32_variant & 0xf0000000UL ) |
865 | 0 | { |
866 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
867 | 0 | base32_character1 = base32_stream[ safe_base32_stream_index ]; |
868 | 0 | break; |
869 | | |
870 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
871 | 0 | byte_stream_copy_to_uint16_big_endian( |
872 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
873 | 0 | base32_character1 ); |
874 | 0 | break; |
875 | | |
876 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
877 | 0 | byte_stream_copy_to_uint16_little_endian( |
878 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
879 | 0 | base32_character1 ); |
880 | 0 | break; |
881 | | |
882 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
883 | 0 | byte_stream_copy_to_uint32_big_endian( |
884 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
885 | 0 | base32_character1 ); |
886 | 0 | break; |
887 | | |
888 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
889 | 0 | byte_stream_copy_to_uint32_little_endian( |
890 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
891 | 0 | base32_character1 ); |
892 | 0 | break; |
893 | 0 | } |
894 | 0 | safe_base32_stream_index += base32_character_size; |
895 | |
|
896 | 0 | if( ( base32_character1 & 0xffffff00UL ) != 0 ) |
897 | 0 | { |
898 | 0 | libcerror_error_set( |
899 | 0 | error, |
900 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
901 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
902 | 0 | "%s: invalid 8th base32 character.", |
903 | 0 | function ); |
904 | |
|
905 | 0 | return( -1 ); |
906 | 0 | } |
907 | 0 | if( base32_character1 == (uint32_t) '=' ) |
908 | 0 | { |
909 | 0 | if( ( base32_variant & 0x0f000000UL ) == LIBUNA_BASE32_VARIANT_PADDING_NONE ) |
910 | 0 | { |
911 | 0 | libcerror_error_set( |
912 | 0 | error, |
913 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
914 | 0 | LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE, |
915 | 0 | "%s: padding where not supposed to - invalid 8th base32 character.", |
916 | 0 | function ); |
917 | |
|
918 | 0 | return( -1 ); |
919 | 0 | } |
920 | 0 | } |
921 | 0 | else |
922 | 0 | { |
923 | 0 | if( safe_padding_size > 1 ) |
924 | 0 | { |
925 | 0 | libcerror_error_set( |
926 | 0 | error, |
927 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
928 | 0 | LIBCERROR_RUNTIME_ERROR_UNSUPPORTED_VALUE, |
929 | 0 | "%s: non-padding where not supposed to - invalid 8th base32 character.", |
930 | 0 | function ); |
931 | |
|
932 | 0 | return( -1 ); |
933 | 0 | } |
934 | 0 | if( libuna_base32_character_copy_to_quintet( |
935 | 0 | (uint8_t) base32_character1, |
936 | 0 | &quintet8, |
937 | 0 | base32_variant, |
938 | 0 | error ) != 1 ) |
939 | 0 | { |
940 | 0 | libcerror_error_set( |
941 | 0 | error, |
942 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
943 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
944 | 0 | "%s: invalid 8th base32 quintet.", |
945 | 0 | function ); |
946 | |
|
947 | 0 | return( -1 ); |
948 | 0 | } |
949 | 0 | safe_padding_size -= 1; |
950 | 0 | } |
951 | 0 | } |
952 | 0 | else if( ( base32_variant & 0x0f000000UL ) != LIBUNA_BASE32_VARIANT_PADDING_NONE ) |
953 | 0 | { |
954 | 0 | libcerror_error_set( |
955 | 0 | error, |
956 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
957 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
958 | 0 | "%s: missing 8th base32 character.", |
959 | 0 | function ); |
960 | |
|
961 | 0 | return( -1 ); |
962 | 0 | } |
963 | 0 | safe_base32_quintuplet = quintet1; |
964 | 0 | safe_base32_quintuplet <<= 5; |
965 | 0 | safe_base32_quintuplet |= quintet2; |
966 | 0 | safe_base32_quintuplet <<= 5; |
967 | 0 | safe_base32_quintuplet |= quintet3; |
968 | 0 | safe_base32_quintuplet <<= 5; |
969 | 0 | safe_base32_quintuplet |= quintet4; |
970 | 0 | safe_base32_quintuplet <<= 5; |
971 | 0 | safe_base32_quintuplet |= quintet5; |
972 | 0 | safe_base32_quintuplet <<= 5; |
973 | 0 | safe_base32_quintuplet |= quintet6; |
974 | 0 | safe_base32_quintuplet <<= 5; |
975 | 0 | safe_base32_quintuplet |= quintet7; |
976 | 0 | safe_base32_quintuplet <<= 5; |
977 | 0 | safe_base32_quintuplet |= quintet8; |
978 | |
|
979 | 0 | *base32_stream_index = safe_base32_stream_index; |
980 | 0 | *base32_quintuplet = safe_base32_quintuplet; |
981 | 0 | *padding_size = safe_padding_size; |
982 | |
|
983 | 0 | return( 1 ); |
984 | 0 | } |
985 | | |
986 | | /* Copies a base32 quintuplet to a base32 stream |
987 | | * Returns 1 if successful or -1 on error |
988 | | */ |
989 | | int libuna_base32_quintuplet_copy_to_base32_stream( |
990 | | uint64_t base32_quintuplet, |
991 | | uint8_t *base32_stream, |
992 | | size_t base32_stream_size, |
993 | | size_t *base32_stream_index, |
994 | | uint8_t padding_size, |
995 | | uint32_t base32_variant, |
996 | | libcerror_error_t **error ) |
997 | 0 | { |
998 | 0 | uint8_t *quintet_to_character_table = NULL; |
999 | 0 | static char *function = "libuna_base32_quintuplet_copy_to_base32_stream"; |
1000 | 0 | size_t base32_character_size = 0; |
1001 | 0 | size_t safe_base32_stream_index = 0; |
1002 | 0 | uint32_t base32_character1 = 0; |
1003 | 0 | uint32_t base32_character2 = 0; |
1004 | 0 | uint8_t quintet1 = 0; |
1005 | 0 | uint8_t quintet2 = 0; |
1006 | 0 | uint8_t quintet3 = 0; |
1007 | 0 | uint8_t quintet4 = 0; |
1008 | 0 | uint8_t quintet5 = 0; |
1009 | 0 | uint8_t quintet6 = 0; |
1010 | 0 | uint8_t quintet7 = 0; |
1011 | 0 | uint8_t quintet8 = 0; |
1012 | |
|
1013 | 0 | if( base32_stream == NULL ) |
1014 | 0 | { |
1015 | 0 | libcerror_error_set( |
1016 | 0 | error, |
1017 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1018 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1019 | 0 | "%s: invalid base32 stream.", |
1020 | 0 | function ); |
1021 | |
|
1022 | 0 | return( -1 ); |
1023 | 0 | } |
1024 | 0 | if( base32_stream_size > (size_t) SSIZE_MAX ) |
1025 | 0 | { |
1026 | 0 | libcerror_error_set( |
1027 | 0 | error, |
1028 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1029 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
1030 | 0 | "%s: invalid base32 stream size value exceeds maximum.", |
1031 | 0 | function ); |
1032 | |
|
1033 | 0 | return( -1 ); |
1034 | 0 | } |
1035 | 0 | if( base32_stream_index == NULL ) |
1036 | 0 | { |
1037 | 0 | libcerror_error_set( |
1038 | 0 | error, |
1039 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1040 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1041 | 0 | "%s: invalid base32 stream index.", |
1042 | 0 | function ); |
1043 | |
|
1044 | 0 | return( -1 ); |
1045 | 0 | } |
1046 | 0 | if( *base32_stream_index >= base32_stream_size ) |
1047 | 0 | { |
1048 | 0 | libcerror_error_set( |
1049 | 0 | error, |
1050 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1051 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1052 | 0 | "%s: base32 stream string too small.", |
1053 | 0 | function ); |
1054 | |
|
1055 | 0 | return( -1 ); |
1056 | 0 | } |
1057 | 0 | if( padding_size > 6 ) |
1058 | 0 | { |
1059 | 0 | libcerror_error_set( |
1060 | 0 | error, |
1061 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1062 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1063 | 0 | "%s: invalid padding size value out of bounds.", |
1064 | 0 | function ); |
1065 | |
|
1066 | 0 | return( -1 ); |
1067 | 0 | } |
1068 | 0 | switch( base32_variant & 0x000f0000UL ) |
1069 | 0 | { |
1070 | 0 | case LIBUNA_BASE32_VARIANT_ALPHABET_NORMAL: |
1071 | 0 | quintet_to_character_table = libuna_base32_quintet_to_character_table; |
1072 | 0 | break; |
1073 | | |
1074 | 0 | case LIBUNA_BASE32_VARIANT_ALPHABET_HEX: |
1075 | 0 | quintet_to_character_table = libuna_base32hex_quintet_to_character_table; |
1076 | 0 | break; |
1077 | | |
1078 | 0 | default: |
1079 | 0 | libcerror_error_set( |
1080 | 0 | error, |
1081 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1082 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1083 | 0 | "%s: unsupported base32 variant.", |
1084 | 0 | function ); |
1085 | |
|
1086 | 0 | return( -1 ); |
1087 | 0 | } |
1088 | 0 | switch( base32_variant & 0x0f000000UL ) |
1089 | 0 | { |
1090 | 0 | case LIBUNA_BASE32_VARIANT_PADDING_NONE: |
1091 | 0 | case LIBUNA_BASE32_VARIANT_PADDING_OPTIONAL: |
1092 | 0 | case LIBUNA_BASE32_VARIANT_PADDING_REQUIRED: |
1093 | 0 | break; |
1094 | | |
1095 | 0 | default: |
1096 | 0 | libcerror_error_set( |
1097 | 0 | error, |
1098 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1099 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1100 | 0 | "%s: unsupported base32 variant.", |
1101 | 0 | function ); |
1102 | |
|
1103 | 0 | return( -1 ); |
1104 | 0 | } |
1105 | 0 | switch( base32_variant & 0xf0000000UL ) |
1106 | 0 | { |
1107 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
1108 | 0 | base32_character_size = 1; |
1109 | 0 | break; |
1110 | | |
1111 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1112 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1113 | 0 | base32_character_size = 2; |
1114 | 0 | break; |
1115 | | |
1116 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1117 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1118 | 0 | base32_character_size = 4; |
1119 | 0 | break; |
1120 | | |
1121 | 0 | default: |
1122 | 0 | libcerror_error_set( |
1123 | 0 | error, |
1124 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1125 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1126 | 0 | "%s: unsupported base32 variant.", |
1127 | 0 | function ); |
1128 | |
|
1129 | 0 | return( -1 ); |
1130 | 0 | } |
1131 | 0 | safe_base32_stream_index = *base32_stream_index; |
1132 | | |
1133 | | /* Separate the 3 bytes value into 8 x 5 bit values |
1134 | | */ |
1135 | 0 | quintet8 = (uint8_t) ( base32_quintuplet & 0x1f ); |
1136 | 0 | base32_quintuplet >>= 5; |
1137 | 0 | quintet7 = (uint8_t) ( base32_quintuplet & 0x1f ); |
1138 | 0 | base32_quintuplet >>= 5; |
1139 | 0 | quintet6 = (uint8_t) ( base32_quintuplet & 0x1f ); |
1140 | 0 | base32_quintuplet >>= 5; |
1141 | 0 | quintet5 = (uint8_t) ( base32_quintuplet & 0x1f ); |
1142 | 0 | base32_quintuplet >>= 5; |
1143 | 0 | quintet4 = (uint8_t) ( base32_quintuplet & 0x1f ); |
1144 | 0 | base32_quintuplet >>= 5; |
1145 | 0 | quintet3 = (uint8_t) ( base32_quintuplet & 0x1f ); |
1146 | 0 | base32_quintuplet >>= 5; |
1147 | 0 | quintet2 = (uint8_t) ( base32_quintuplet & 0x1f ); |
1148 | 0 | base32_quintuplet >>= 5; |
1149 | 0 | quintet1 = (uint8_t) ( base32_quintuplet & 0x1f ); |
1150 | | |
1151 | | /* Spread the encoding over 2 characters if 1 byte is available |
1152 | | */ |
1153 | 0 | if( ( 2 * base32_character_size ) > ( base32_stream_size - safe_base32_stream_index ) ) |
1154 | 0 | { |
1155 | 0 | libcerror_error_set( |
1156 | 0 | error, |
1157 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1158 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1159 | 0 | "%s: base32 stream is too small - insufficient space for 1st and 2nd base32 characters.", |
1160 | 0 | function ); |
1161 | |
|
1162 | 0 | return( -1 ); |
1163 | 0 | } |
1164 | 0 | base32_character1 = (uint32_t) quintet_to_character_table[ quintet1 ]; |
1165 | 0 | base32_character2 = (uint32_t) quintet_to_character_table[ quintet2 ]; |
1166 | |
|
1167 | 0 | switch( base32_variant & 0xf0000000UL ) |
1168 | 0 | { |
1169 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
1170 | 0 | base32_stream[ safe_base32_stream_index ] = (uint8_t) base32_character1; |
1171 | 0 | base32_stream[ safe_base32_stream_index + 1 ] = (uint8_t) base32_character2; |
1172 | 0 | break; |
1173 | | |
1174 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1175 | 0 | byte_stream_copy_from_uint16_big_endian( |
1176 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1177 | 0 | base32_character1 ); |
1178 | |
|
1179 | 0 | byte_stream_copy_from_uint16_big_endian( |
1180 | 0 | &( base32_stream[ safe_base32_stream_index + 2 ] ), |
1181 | 0 | base32_character2 ); |
1182 | 0 | break; |
1183 | | |
1184 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1185 | 0 | byte_stream_copy_from_uint16_little_endian( |
1186 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1187 | 0 | base32_character1 ); |
1188 | |
|
1189 | 0 | byte_stream_copy_from_uint16_little_endian( |
1190 | 0 | &( base32_stream[ safe_base32_stream_index + 2 ] ), |
1191 | 0 | base32_character2 ); |
1192 | 0 | break; |
1193 | | |
1194 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1195 | 0 | byte_stream_copy_from_uint32_big_endian( |
1196 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1197 | 0 | base32_character1 ); |
1198 | |
|
1199 | 0 | byte_stream_copy_from_uint32_big_endian( |
1200 | 0 | &( base32_stream[ safe_base32_stream_index + 4 ] ), |
1201 | 0 | base32_character2 ); |
1202 | 0 | break; |
1203 | | |
1204 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1205 | 0 | byte_stream_copy_from_uint32_little_endian( |
1206 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1207 | 0 | base32_character1 ); |
1208 | |
|
1209 | 0 | byte_stream_copy_from_uint32_little_endian( |
1210 | 0 | &( base32_stream[ safe_base32_stream_index + 4 ] ), |
1211 | 0 | base32_character2 ); |
1212 | 0 | break; |
1213 | 0 | } |
1214 | 0 | safe_base32_stream_index += 2 * base32_character_size; |
1215 | | |
1216 | | /* Spread the encoding over 4 characters if 2 bytes are available |
1217 | | * Otherwise pad the remaining bytes if required |
1218 | | */ |
1219 | 0 | if( ( padding_size < 6 ) |
1220 | 0 | || ( ( base32_variant & 0x0f000000UL ) != LIBUNA_BASE32_VARIANT_PADDING_NONE ) ) |
1221 | 0 | { |
1222 | 0 | if( ( 2 * base32_character_size ) > ( base32_stream_size - safe_base32_stream_index ) ) |
1223 | 0 | { |
1224 | 0 | libcerror_error_set( |
1225 | 0 | error, |
1226 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1227 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1228 | 0 | "%s: base32 stream is too small - insufficient space for 3rd and 4th base32 characters.", |
1229 | 0 | function ); |
1230 | |
|
1231 | 0 | return( -1 ); |
1232 | 0 | } |
1233 | 0 | if( padding_size < 6 ) |
1234 | 0 | { |
1235 | 0 | base32_character1 = (uint32_t) quintet_to_character_table[ quintet3 ]; |
1236 | 0 | base32_character2 = (uint32_t) quintet_to_character_table[ quintet4 ]; |
1237 | 0 | } |
1238 | 0 | else |
1239 | 0 | { |
1240 | 0 | base32_character1 = (uint32_t) '='; |
1241 | 0 | base32_character2 = (uint32_t) '='; |
1242 | 0 | } |
1243 | 0 | switch( base32_variant & 0xf0000000UL ) |
1244 | 0 | { |
1245 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
1246 | 0 | base32_stream[ safe_base32_stream_index ] = (uint8_t) base32_character1; |
1247 | 0 | base32_stream[ safe_base32_stream_index + 1 ] = (uint8_t) base32_character2; |
1248 | 0 | break; |
1249 | | |
1250 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1251 | 0 | byte_stream_copy_from_uint16_big_endian( |
1252 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1253 | 0 | base32_character1 ); |
1254 | |
|
1255 | 0 | byte_stream_copy_from_uint16_big_endian( |
1256 | 0 | &( base32_stream[ safe_base32_stream_index + 2 ] ), |
1257 | 0 | base32_character2 ); |
1258 | 0 | break; |
1259 | | |
1260 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1261 | 0 | byte_stream_copy_from_uint16_little_endian( |
1262 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1263 | 0 | base32_character1 ); |
1264 | |
|
1265 | 0 | byte_stream_copy_from_uint16_little_endian( |
1266 | 0 | &( base32_stream[ safe_base32_stream_index + 2 ] ), |
1267 | 0 | base32_character2 ); |
1268 | 0 | break; |
1269 | | |
1270 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1271 | 0 | byte_stream_copy_from_uint32_big_endian( |
1272 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1273 | 0 | base32_character1 ); |
1274 | |
|
1275 | 0 | byte_stream_copy_from_uint32_big_endian( |
1276 | 0 | &( base32_stream[ safe_base32_stream_index + 4 ] ), |
1277 | 0 | base32_character2 ); |
1278 | 0 | break; |
1279 | | |
1280 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1281 | 0 | byte_stream_copy_from_uint32_little_endian( |
1282 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1283 | 0 | base32_character1 ); |
1284 | |
|
1285 | 0 | byte_stream_copy_from_uint32_little_endian( |
1286 | 0 | &( base32_stream[ safe_base32_stream_index + 4 ] ), |
1287 | 0 | base32_character2 ); |
1288 | 0 | break; |
1289 | 0 | } |
1290 | 0 | safe_base32_stream_index += 2 * base32_character_size; |
1291 | 0 | } |
1292 | | /* Spread the encoding over 5 characters if 3 bytes are available |
1293 | | * Otherwise pad the remaining bytes if required |
1294 | | */ |
1295 | 0 | if( ( padding_size < 4 ) |
1296 | 0 | || ( ( base32_variant & 0x0f000000UL ) != LIBUNA_BASE32_VARIANT_PADDING_NONE ) ) |
1297 | 0 | { |
1298 | 0 | if( base32_character_size > ( base32_stream_size - safe_base32_stream_index ) ) |
1299 | 0 | { |
1300 | 0 | libcerror_error_set( |
1301 | 0 | error, |
1302 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1303 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1304 | 0 | "%s: base32 stream is too small - insufficient space for 5th base32 character.", |
1305 | 0 | function ); |
1306 | |
|
1307 | 0 | return( -1 ); |
1308 | 0 | } |
1309 | 0 | if( padding_size < 4 ) |
1310 | 0 | { |
1311 | 0 | base32_character1 = (uint32_t) quintet_to_character_table[ quintet5 ]; |
1312 | 0 | } |
1313 | 0 | else |
1314 | 0 | { |
1315 | 0 | base32_character1 = (uint32_t) '='; |
1316 | 0 | } |
1317 | 0 | switch( base32_variant & 0xf0000000UL ) |
1318 | 0 | { |
1319 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
1320 | 0 | base32_stream[ safe_base32_stream_index ] = (uint8_t) base32_character1; |
1321 | 0 | break; |
1322 | | |
1323 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1324 | 0 | byte_stream_copy_from_uint16_big_endian( |
1325 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1326 | 0 | base32_character1 ); |
1327 | 0 | break; |
1328 | | |
1329 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1330 | 0 | byte_stream_copy_from_uint16_little_endian( |
1331 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1332 | 0 | base32_character1 ); |
1333 | 0 | break; |
1334 | | |
1335 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1336 | 0 | byte_stream_copy_from_uint32_big_endian( |
1337 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1338 | 0 | base32_character1 ); |
1339 | 0 | break; |
1340 | | |
1341 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1342 | 0 | byte_stream_copy_from_uint32_little_endian( |
1343 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1344 | 0 | base32_character1 ); |
1345 | 0 | break; |
1346 | 0 | } |
1347 | 0 | safe_base32_stream_index += base32_character_size; |
1348 | 0 | } |
1349 | | /* Spread the encoding over 7 characters if 4 bytes are available |
1350 | | * Otherwise pad the remaining bytes if required |
1351 | | */ |
1352 | 0 | if( ( padding_size < 3 ) |
1353 | 0 | || ( ( base32_variant & 0x0f000000UL ) != LIBUNA_BASE32_VARIANT_PADDING_NONE ) ) |
1354 | 0 | { |
1355 | 0 | if( ( 2 * base32_character_size ) > ( base32_stream_size - safe_base32_stream_index ) ) |
1356 | 0 | { |
1357 | 0 | libcerror_error_set( |
1358 | 0 | error, |
1359 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1360 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1361 | 0 | "%s: base32 stream is too small - insufficient space for 6th and 7th base32 characters.", |
1362 | 0 | function ); |
1363 | |
|
1364 | 0 | return( -1 ); |
1365 | 0 | } |
1366 | 0 | if( padding_size < 3 ) |
1367 | 0 | { |
1368 | 0 | base32_character1 = (uint32_t) quintet_to_character_table[ quintet6 ]; |
1369 | 0 | base32_character2 = (uint32_t) quintet_to_character_table[ quintet7 ]; |
1370 | 0 | } |
1371 | 0 | else |
1372 | 0 | { |
1373 | 0 | base32_character1 = (uint32_t) '='; |
1374 | 0 | base32_character2 = (uint32_t) '='; |
1375 | 0 | } |
1376 | 0 | switch( base32_variant & 0xf0000000UL ) |
1377 | 0 | { |
1378 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
1379 | 0 | base32_stream[ safe_base32_stream_index ] = (uint8_t) base32_character1; |
1380 | 0 | base32_stream[ safe_base32_stream_index + 1 ] = (uint8_t) base32_character2; |
1381 | 0 | break; |
1382 | | |
1383 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1384 | 0 | byte_stream_copy_from_uint16_big_endian( |
1385 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1386 | 0 | base32_character1 ); |
1387 | |
|
1388 | 0 | byte_stream_copy_from_uint16_big_endian( |
1389 | 0 | &( base32_stream[ safe_base32_stream_index + 2 ] ), |
1390 | 0 | base32_character2 ); |
1391 | 0 | break; |
1392 | | |
1393 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1394 | 0 | byte_stream_copy_from_uint16_little_endian( |
1395 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1396 | 0 | base32_character1 ); |
1397 | |
|
1398 | 0 | byte_stream_copy_from_uint16_little_endian( |
1399 | 0 | &( base32_stream[ safe_base32_stream_index + 2 ] ), |
1400 | 0 | base32_character2 ); |
1401 | 0 | break; |
1402 | | |
1403 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1404 | 0 | byte_stream_copy_from_uint32_big_endian( |
1405 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1406 | 0 | base32_character1 ); |
1407 | |
|
1408 | 0 | byte_stream_copy_from_uint32_big_endian( |
1409 | 0 | &( base32_stream[ safe_base32_stream_index + 4 ] ), |
1410 | 0 | base32_character2 ); |
1411 | 0 | break; |
1412 | | |
1413 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1414 | 0 | byte_stream_copy_from_uint32_little_endian( |
1415 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1416 | 0 | base32_character1 ); |
1417 | |
|
1418 | 0 | byte_stream_copy_from_uint32_little_endian( |
1419 | 0 | &( base32_stream[ safe_base32_stream_index + 4 ] ), |
1420 | 0 | base32_character2 ); |
1421 | 0 | break; |
1422 | 0 | } |
1423 | 0 | safe_base32_stream_index += 2 * base32_character_size; |
1424 | 0 | } |
1425 | | /* Spread the encoding over 8 characters if 5 bytes are available |
1426 | | * Otherwise pad the remaining bytes if required |
1427 | | */ |
1428 | 0 | if( ( padding_size < 1 ) |
1429 | 0 | || ( ( base32_variant & 0x0f000000UL ) != LIBUNA_BASE32_VARIANT_PADDING_NONE ) ) |
1430 | 0 | { |
1431 | 0 | if( base32_character_size > ( base32_stream_size - safe_base32_stream_index ) ) |
1432 | 0 | { |
1433 | 0 | libcerror_error_set( |
1434 | 0 | error, |
1435 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1436 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1437 | 0 | "%s: base32 stream is too small - insufficient space for 8th base32 character.", |
1438 | 0 | function ); |
1439 | |
|
1440 | 0 | return( -1 ); |
1441 | 0 | } |
1442 | 0 | if( padding_size < 1 ) |
1443 | 0 | { |
1444 | 0 | base32_character1 = (uint32_t) quintet_to_character_table[ quintet8 ]; |
1445 | 0 | } |
1446 | 0 | else |
1447 | 0 | { |
1448 | 0 | base32_character1 = (uint32_t) '='; |
1449 | 0 | } |
1450 | 0 | switch( base32_variant & 0xf0000000UL ) |
1451 | 0 | { |
1452 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
1453 | 0 | base32_stream[ safe_base32_stream_index ] = (uint8_t) base32_character1; |
1454 | 0 | break; |
1455 | | |
1456 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1457 | 0 | byte_stream_copy_from_uint16_big_endian( |
1458 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1459 | 0 | base32_character1 ); |
1460 | 0 | break; |
1461 | | |
1462 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1463 | 0 | byte_stream_copy_from_uint16_little_endian( |
1464 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1465 | 0 | base32_character1 ); |
1466 | 0 | break; |
1467 | | |
1468 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1469 | 0 | byte_stream_copy_from_uint32_big_endian( |
1470 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1471 | 0 | base32_character1 ); |
1472 | 0 | break; |
1473 | | |
1474 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1475 | 0 | byte_stream_copy_from_uint32_little_endian( |
1476 | 0 | &( base32_stream[ safe_base32_stream_index ] ), |
1477 | 0 | base32_character1 ); |
1478 | 0 | break; |
1479 | 0 | } |
1480 | 0 | safe_base32_stream_index += base32_character_size; |
1481 | 0 | } |
1482 | 0 | *base32_stream_index = safe_base32_stream_index; |
1483 | |
|
1484 | 0 | return( 1 ); |
1485 | 0 | } |
1486 | | |
1487 | | /* Copies a base32 quintuplet from a byte stream |
1488 | | * Returns 1 if successful or -1 on error |
1489 | | */ |
1490 | | int libuna_base32_quintuplet_copy_from_byte_stream( |
1491 | | uint64_t *base32_quintuplet, |
1492 | | const uint8_t *byte_stream, |
1493 | | size_t byte_stream_size, |
1494 | | size_t *byte_stream_index, |
1495 | | uint8_t *padding_size, |
1496 | | libcerror_error_t **error ) |
1497 | 0 | { |
1498 | 0 | static char *function = "libuna_base32_quintuplet_copy_from_byte_stream"; |
1499 | 0 | size_t safe_byte_stream_index = 0; |
1500 | 0 | uint64_t safe_base32_quintuplet = 0; |
1501 | 0 | uint8_t safe_padding_size = 0; |
1502 | |
|
1503 | 0 | if( base32_quintuplet == NULL ) |
1504 | 0 | { |
1505 | 0 | libcerror_error_set( |
1506 | 0 | error, |
1507 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1508 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1509 | 0 | "%s: invalid base32 quintuplet.", |
1510 | 0 | function ); |
1511 | |
|
1512 | 0 | return( -1 ); |
1513 | 0 | } |
1514 | 0 | if( byte_stream == NULL ) |
1515 | 0 | { |
1516 | 0 | libcerror_error_set( |
1517 | 0 | error, |
1518 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1519 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1520 | 0 | "%s: invalid byte stream.", |
1521 | 0 | function ); |
1522 | |
|
1523 | 0 | return( -1 ); |
1524 | 0 | } |
1525 | 0 | if( byte_stream_size > (size_t) SSIZE_MAX ) |
1526 | 0 | { |
1527 | 0 | libcerror_error_set( |
1528 | 0 | error, |
1529 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1530 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
1531 | 0 | "%s: invalid byte stream size value exceeds maximum.", |
1532 | 0 | function ); |
1533 | |
|
1534 | 0 | return( -1 ); |
1535 | 0 | } |
1536 | 0 | if( byte_stream_index == NULL ) |
1537 | 0 | { |
1538 | 0 | libcerror_error_set( |
1539 | 0 | error, |
1540 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1541 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1542 | 0 | "%s: invalid byte stream index.", |
1543 | 0 | function ); |
1544 | |
|
1545 | 0 | return( -1 ); |
1546 | 0 | } |
1547 | 0 | if( *byte_stream_index >= byte_stream_size ) |
1548 | 0 | { |
1549 | 0 | libcerror_error_set( |
1550 | 0 | error, |
1551 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1552 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1553 | 0 | "%s: byte stream string too small.", |
1554 | 0 | function ); |
1555 | |
|
1556 | 0 | return( -1 ); |
1557 | 0 | } |
1558 | 0 | if( padding_size == NULL ) |
1559 | 0 | { |
1560 | 0 | libcerror_error_set( |
1561 | 0 | error, |
1562 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1563 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1564 | 0 | "%s: invalid padding size.", |
1565 | 0 | function ); |
1566 | |
|
1567 | 0 | return( -1 ); |
1568 | 0 | } |
1569 | | /* Determine the value of 5 bytes (40 bits) |
1570 | | */ |
1571 | 0 | safe_byte_stream_index = *byte_stream_index; |
1572 | |
|
1573 | 0 | safe_base32_quintuplet = byte_stream[ safe_byte_stream_index++ ]; |
1574 | 0 | safe_padding_size = 6; |
1575 | |
|
1576 | 0 | safe_base32_quintuplet <<= 8; |
1577 | |
|
1578 | 0 | if( safe_byte_stream_index < byte_stream_size ) |
1579 | 0 | { |
1580 | 0 | safe_base32_quintuplet |= byte_stream[ safe_byte_stream_index++ ]; |
1581 | 0 | safe_padding_size -= 2; |
1582 | 0 | } |
1583 | 0 | safe_base32_quintuplet <<= 8; |
1584 | |
|
1585 | 0 | if( safe_byte_stream_index < byte_stream_size ) |
1586 | 0 | { |
1587 | 0 | safe_base32_quintuplet |= byte_stream[ safe_byte_stream_index++ ]; |
1588 | 0 | safe_padding_size -= 1; |
1589 | 0 | } |
1590 | 0 | safe_base32_quintuplet <<= 8; |
1591 | |
|
1592 | 0 | if( safe_byte_stream_index < byte_stream_size ) |
1593 | 0 | { |
1594 | 0 | safe_base32_quintuplet |= byte_stream[ safe_byte_stream_index++ ]; |
1595 | 0 | safe_padding_size -= 2; |
1596 | 0 | } |
1597 | 0 | safe_base32_quintuplet <<= 8; |
1598 | |
|
1599 | 0 | if( safe_byte_stream_index < byte_stream_size ) |
1600 | 0 | { |
1601 | 0 | safe_base32_quintuplet |= byte_stream[ safe_byte_stream_index++ ]; |
1602 | 0 | safe_padding_size -= 1; |
1603 | 0 | } |
1604 | 0 | *base32_quintuplet = safe_base32_quintuplet; |
1605 | 0 | *byte_stream_index = safe_byte_stream_index; |
1606 | 0 | *padding_size = safe_padding_size; |
1607 | |
|
1608 | 0 | return( 1 ); |
1609 | 0 | } |
1610 | | |
1611 | | /* Copies a base32 quintuplet to a byte stream |
1612 | | * Returns 1 if successful or -1 on error |
1613 | | */ |
1614 | | int libuna_base32_quintuplet_copy_to_byte_stream( |
1615 | | uint64_t base32_quintuplet, |
1616 | | uint8_t *byte_stream, |
1617 | | size_t byte_stream_size, |
1618 | | size_t *byte_stream_index, |
1619 | | uint8_t padding_size, |
1620 | | libcerror_error_t **error ) |
1621 | 0 | { |
1622 | 0 | static char *function = "libuna_base32_quintuplet_copy_to_byte_stream"; |
1623 | 0 | size_t safe_byte_stream_index = 0; |
1624 | |
|
1625 | 0 | if( byte_stream == NULL ) |
1626 | 0 | { |
1627 | 0 | libcerror_error_set( |
1628 | 0 | error, |
1629 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1630 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1631 | 0 | "%s: invalid byte stream.", |
1632 | 0 | function ); |
1633 | |
|
1634 | 0 | return( -1 ); |
1635 | 0 | } |
1636 | 0 | if( byte_stream_size > (size_t) SSIZE_MAX ) |
1637 | 0 | { |
1638 | 0 | libcerror_error_set( |
1639 | 0 | error, |
1640 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1641 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
1642 | 0 | "%s: invalid byte stream size value exceeds maximum.", |
1643 | 0 | function ); |
1644 | |
|
1645 | 0 | return( -1 ); |
1646 | 0 | } |
1647 | 0 | if( byte_stream_index == NULL ) |
1648 | 0 | { |
1649 | 0 | libcerror_error_set( |
1650 | 0 | error, |
1651 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1652 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1653 | 0 | "%s: invalid byte stream index.", |
1654 | 0 | function ); |
1655 | |
|
1656 | 0 | return( -1 ); |
1657 | 0 | } |
1658 | 0 | if( *byte_stream_index >= byte_stream_size ) |
1659 | 0 | { |
1660 | 0 | libcerror_error_set( |
1661 | 0 | error, |
1662 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1663 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1664 | 0 | "%s: byte stream string too small.", |
1665 | 0 | function ); |
1666 | |
|
1667 | 0 | return( -1 ); |
1668 | 0 | } |
1669 | 0 | if( padding_size > 6 ) |
1670 | 0 | { |
1671 | 0 | libcerror_error_set( |
1672 | 0 | error, |
1673 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1674 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_OUT_OF_BOUNDS, |
1675 | 0 | "%s: invalid padding size value out of bounds.", |
1676 | 0 | function ); |
1677 | |
|
1678 | 0 | return( -1 ); |
1679 | 0 | } |
1680 | 0 | safe_byte_stream_index = *byte_stream_index; |
1681 | |
|
1682 | 0 | byte_stream[ safe_byte_stream_index++ ] = (uint8_t) ( ( base32_quintuplet >> 32 ) & 0xff ); |
1683 | |
|
1684 | 0 | if( padding_size <= 4 ) |
1685 | 0 | { |
1686 | 0 | if( safe_byte_stream_index >= byte_stream_size ) |
1687 | 0 | { |
1688 | 0 | libcerror_error_set( |
1689 | 0 | error, |
1690 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1691 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1692 | 0 | "%s: byte stream string too small.", |
1693 | 0 | function ); |
1694 | |
|
1695 | 0 | return( -1 ); |
1696 | 0 | } |
1697 | 0 | byte_stream[ safe_byte_stream_index++ ] = (uint8_t) ( ( base32_quintuplet >> 24 ) & 0xff ); |
1698 | 0 | } |
1699 | 0 | if( padding_size <= 3 ) |
1700 | 0 | { |
1701 | 0 | if( safe_byte_stream_index >= byte_stream_size ) |
1702 | 0 | { |
1703 | 0 | libcerror_error_set( |
1704 | 0 | error, |
1705 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1706 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1707 | 0 | "%s: byte stream string too small.", |
1708 | 0 | function ); |
1709 | |
|
1710 | 0 | return( -1 ); |
1711 | 0 | } |
1712 | 0 | byte_stream[ safe_byte_stream_index++ ] = (uint8_t) ( ( base32_quintuplet >> 16 ) & 0xff ); |
1713 | 0 | } |
1714 | 0 | if( padding_size <= 2 ) |
1715 | 0 | { |
1716 | 0 | if( safe_byte_stream_index >= byte_stream_size ) |
1717 | 0 | { |
1718 | 0 | libcerror_error_set( |
1719 | 0 | error, |
1720 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1721 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1722 | 0 | "%s: byte stream string too small.", |
1723 | 0 | function ); |
1724 | |
|
1725 | 0 | return( -1 ); |
1726 | 0 | } |
1727 | 0 | byte_stream[ safe_byte_stream_index++ ] = (uint8_t) ( ( base32_quintuplet >> 8 ) & 0xff ); |
1728 | 0 | } |
1729 | 0 | if( padding_size == 0 ) |
1730 | 0 | { |
1731 | 0 | if( safe_byte_stream_index >= byte_stream_size ) |
1732 | 0 | { |
1733 | 0 | libcerror_error_set( |
1734 | 0 | error, |
1735 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1736 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
1737 | 0 | "%s: byte stream is too small.", |
1738 | 0 | function ); |
1739 | |
|
1740 | 0 | return( -1 ); |
1741 | 0 | } |
1742 | 0 | byte_stream[ safe_byte_stream_index++ ] = (uint8_t) ( base32_quintuplet & 0xff ); |
1743 | 0 | } |
1744 | 0 | *byte_stream_index = safe_byte_stream_index; |
1745 | |
|
1746 | 0 | return( 1 ); |
1747 | 0 | } |
1748 | | |
1749 | | /* Determines the size of a byte stream from a base32 stream |
1750 | | * |
1751 | | * LIBUNA_BASE32_FLAG_STRIP_WHITESPACE removes leading space and tab characters, |
1752 | | * and trailing space, tab and end of line characters |
1753 | | * |
1754 | | * Returns 1 if successful or -1 on error |
1755 | | */ |
1756 | | int libuna_base32_stream_size_to_byte_stream( |
1757 | | const uint8_t *base32_stream, |
1758 | | size_t base32_stream_size, |
1759 | | size_t *byte_stream_size, |
1760 | | uint32_t base32_variant, |
1761 | | uint8_t flags, |
1762 | | libcerror_error_t **error ) |
1763 | 0 | { |
1764 | 0 | static char *function = "libuna_base32_stream_size_to_byte_stream"; |
1765 | 0 | size_t base32_character_size = 0; |
1766 | 0 | size_t base32_stream_index = 0; |
1767 | 0 | size_t number_of_characters = 0; |
1768 | 0 | size_t safe_byte_stream_size = 0; |
1769 | 0 | size_t whitespace_size = 0; |
1770 | 0 | uint32_t base32_character1 = 0; |
1771 | 0 | uint32_t base32_character2 = 0; |
1772 | 0 | uint8_t character_limit = 0; |
1773 | 0 | uint8_t padding_size = 0; |
1774 | 0 | uint8_t strip_mode = LIBUNA_STRIP_MODE_LEADING_WHITESPACE; |
1775 | |
|
1776 | 0 | if( base32_stream == NULL ) |
1777 | 0 | { |
1778 | 0 | libcerror_error_set( |
1779 | 0 | error, |
1780 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1781 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1782 | 0 | "%s: invalid base32 stream.", |
1783 | 0 | function ); |
1784 | |
|
1785 | 0 | return( -1 ); |
1786 | 0 | } |
1787 | 0 | if( base32_stream_size > (size_t) SSIZE_MAX ) |
1788 | 0 | { |
1789 | 0 | libcerror_error_set( |
1790 | 0 | error, |
1791 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1792 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
1793 | 0 | "%s: invalid base32 stream size value exceeds maximum.", |
1794 | 0 | function ); |
1795 | |
|
1796 | 0 | return( -1 ); |
1797 | 0 | } |
1798 | 0 | if( byte_stream_size == NULL ) |
1799 | 0 | { |
1800 | 0 | libcerror_error_set( |
1801 | 0 | error, |
1802 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1803 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
1804 | 0 | "%s: invalid byte stream size.", |
1805 | 0 | function ); |
1806 | |
|
1807 | 0 | return( -1 ); |
1808 | 0 | } |
1809 | 0 | switch( base32_variant & 0x000000ffUL ) |
1810 | 0 | { |
1811 | 0 | case LIBUNA_BASE32_VARIANT_CHARACTER_LIMIT_NONE: |
1812 | 0 | character_limit = 0; |
1813 | 0 | break; |
1814 | | |
1815 | 0 | case LIBUNA_BASE32_VARIANT_CHARACTER_LIMIT_64: |
1816 | 0 | character_limit = 64; |
1817 | 0 | break; |
1818 | | |
1819 | 0 | default: |
1820 | 0 | libcerror_error_set( |
1821 | 0 | error, |
1822 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1823 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1824 | 0 | "%s: unsupported base32 variant.", |
1825 | 0 | function ); |
1826 | |
|
1827 | 0 | return( -1 ); |
1828 | 0 | } |
1829 | 0 | switch( base32_variant & 0x000f0000UL ) |
1830 | 0 | { |
1831 | 0 | case LIBUNA_BASE32_VARIANT_ALPHABET_NORMAL: |
1832 | 0 | case LIBUNA_BASE32_VARIANT_ALPHABET_HEX: |
1833 | 0 | break; |
1834 | | |
1835 | 0 | default: |
1836 | 0 | libcerror_error_set( |
1837 | 0 | error, |
1838 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1839 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1840 | 0 | "%s: unsupported base32 variant.", |
1841 | 0 | function ); |
1842 | |
|
1843 | 0 | return( -1 ); |
1844 | 0 | } |
1845 | 0 | switch( base32_variant & 0xf0000000UL ) |
1846 | 0 | { |
1847 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
1848 | 0 | base32_character_size = 1; |
1849 | 0 | break; |
1850 | | |
1851 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1852 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1853 | 0 | base32_character_size = 2; |
1854 | 0 | break; |
1855 | | |
1856 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1857 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1858 | 0 | base32_character_size = 4; |
1859 | 0 | break; |
1860 | | |
1861 | 0 | default: |
1862 | 0 | libcerror_error_set( |
1863 | 0 | error, |
1864 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1865 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1866 | 0 | "%s: unsupported base32 variant.", |
1867 | 0 | function ); |
1868 | |
|
1869 | 0 | return( -1 ); |
1870 | 0 | } |
1871 | 0 | if( ( flags & ~( LIBUNA_BASE32_FLAG_STRIP_WHITESPACE ) ) != 0 ) |
1872 | 0 | { |
1873 | 0 | libcerror_error_set( |
1874 | 0 | error, |
1875 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
1876 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
1877 | 0 | "%s: unsupported flags.", |
1878 | 0 | function ); |
1879 | |
|
1880 | 0 | return( -1 ); |
1881 | 0 | } |
1882 | | /* Ignore trailing whitespace |
1883 | | */ |
1884 | 0 | if( base32_stream_size > base32_character_size ) |
1885 | 0 | { |
1886 | 0 | base32_stream_index = base32_stream_size - base32_character_size; |
1887 | 0 | whitespace_size = 0; |
1888 | |
|
1889 | 0 | while( base32_stream_index > base32_character_size ) |
1890 | 0 | { |
1891 | 0 | switch( base32_variant & 0xf0000000UL ) |
1892 | 0 | { |
1893 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
1894 | 0 | base32_character1 = base32_stream[ base32_stream_index ]; |
1895 | 0 | break; |
1896 | | |
1897 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1898 | 0 | byte_stream_copy_to_uint16_big_endian( |
1899 | 0 | &( base32_stream[ base32_stream_index ] ), |
1900 | 0 | base32_character1 ); |
1901 | 0 | break; |
1902 | | |
1903 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1904 | 0 | byte_stream_copy_to_uint16_little_endian( |
1905 | 0 | &( base32_stream[ base32_stream_index ] ), |
1906 | 0 | base32_character1 ); |
1907 | 0 | break; |
1908 | | |
1909 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1910 | 0 | byte_stream_copy_to_uint32_big_endian( |
1911 | 0 | &( base32_stream[ base32_stream_index ] ), |
1912 | 0 | base32_character1 ); |
1913 | 0 | break; |
1914 | | |
1915 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1916 | 0 | byte_stream_copy_to_uint32_little_endian( |
1917 | 0 | &( base32_stream[ base32_stream_index ] ), |
1918 | 0 | base32_character1 ); |
1919 | 0 | break; |
1920 | 0 | } |
1921 | 0 | base32_stream_index -= base32_character_size; |
1922 | |
|
1923 | 0 | if( ( base32_character1 == (uint32_t) '\n' ) |
1924 | 0 | || ( base32_character1 == (uint32_t) '\r' ) ) |
1925 | 0 | { |
1926 | 0 | whitespace_size += base32_character_size; |
1927 | |
|
1928 | 0 | continue; |
1929 | 0 | } |
1930 | 0 | else if( ( flags & LIBUNA_BASE32_FLAG_STRIP_WHITESPACE ) == 0 ) |
1931 | 0 | { |
1932 | 0 | break; |
1933 | 0 | } |
1934 | 0 | if( ( base32_character1 == (uint32_t) ' ' ) |
1935 | 0 | || ( base32_character1 == (uint32_t) '\t' ) |
1936 | 0 | || ( base32_character1 == (uint32_t) '\v' ) ) |
1937 | 0 | { |
1938 | 0 | whitespace_size += base32_character_size; |
1939 | 0 | } |
1940 | 0 | else |
1941 | 0 | { |
1942 | 0 | break; |
1943 | 0 | } |
1944 | 0 | } |
1945 | 0 | base32_stream_size -= whitespace_size; |
1946 | 0 | } |
1947 | | /* Determine and ignore the padding |
1948 | | */ |
1949 | 0 | if( base32_stream_size > base32_character_size ) |
1950 | 0 | { |
1951 | 0 | base32_stream_index = base32_stream_size - base32_character_size; |
1952 | |
|
1953 | 0 | while( ( base32_stream_index > base32_character_size ) |
1954 | 0 | && ( padding_size <= 6 ) ) |
1955 | 0 | { |
1956 | 0 | switch( base32_variant & 0xf0000000UL ) |
1957 | 0 | { |
1958 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
1959 | 0 | base32_character1 = base32_stream[ base32_stream_index ]; |
1960 | 0 | break; |
1961 | | |
1962 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
1963 | 0 | byte_stream_copy_to_uint16_big_endian( |
1964 | 0 | &( base32_stream[ base32_stream_index ] ), |
1965 | 0 | base32_character1 ); |
1966 | 0 | break; |
1967 | | |
1968 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
1969 | 0 | byte_stream_copy_to_uint16_little_endian( |
1970 | 0 | &( base32_stream[ base32_stream_index ] ), |
1971 | 0 | base32_character1 ); |
1972 | 0 | break; |
1973 | | |
1974 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
1975 | 0 | byte_stream_copy_to_uint32_big_endian( |
1976 | 0 | &( base32_stream[ base32_stream_index ] ), |
1977 | 0 | base32_character1 ); |
1978 | 0 | break; |
1979 | | |
1980 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
1981 | 0 | byte_stream_copy_to_uint32_little_endian( |
1982 | 0 | &( base32_stream[ base32_stream_index ] ), |
1983 | 0 | base32_character1 ); |
1984 | 0 | break; |
1985 | 0 | } |
1986 | 0 | base32_stream_index -= base32_character_size; |
1987 | |
|
1988 | 0 | if( base32_character1 == (uint32_t) '=' ) |
1989 | 0 | { |
1990 | 0 | padding_size += 1; |
1991 | 0 | } |
1992 | 0 | } |
1993 | 0 | if( padding_size > 6 ) |
1994 | 0 | { |
1995 | 0 | libcerror_error_set( |
1996 | 0 | error, |
1997 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
1998 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
1999 | 0 | "%s: invalid amount of padding - found more than 6 padding characters.", |
2000 | 0 | function ); |
2001 | |
|
2002 | 0 | return( -1 ); |
2003 | 0 | } |
2004 | 0 | base32_stream_size -= padding_size * base32_character_size; |
2005 | 0 | } |
2006 | 0 | base32_stream_index = 0; |
2007 | 0 | whitespace_size = 0; |
2008 | |
|
2009 | 0 | while( ( base32_stream_index + base32_character_size ) < base32_stream_size ) |
2010 | 0 | { |
2011 | 0 | switch( base32_variant & 0xf0000000UL ) |
2012 | 0 | { |
2013 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
2014 | 0 | base32_character1 = base32_stream[ base32_stream_index ]; |
2015 | 0 | break; |
2016 | | |
2017 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
2018 | 0 | byte_stream_copy_to_uint16_big_endian( |
2019 | 0 | &( base32_stream[ base32_stream_index ] ), |
2020 | 0 | base32_character1 ); |
2021 | 0 | break; |
2022 | | |
2023 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
2024 | 0 | byte_stream_copy_to_uint16_little_endian( |
2025 | 0 | &( base32_stream[ base32_stream_index ] ), |
2026 | 0 | base32_character1 ); |
2027 | 0 | break; |
2028 | | |
2029 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
2030 | 0 | byte_stream_copy_to_uint32_big_endian( |
2031 | 0 | &( base32_stream[ base32_stream_index ] ), |
2032 | 0 | base32_character1 ); |
2033 | 0 | break; |
2034 | | |
2035 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
2036 | 0 | byte_stream_copy_to_uint32_little_endian( |
2037 | 0 | &( base32_stream[ base32_stream_index ] ), |
2038 | 0 | base32_character1 ); |
2039 | 0 | break; |
2040 | 0 | } |
2041 | 0 | if( ( base32_character1 == (uint32_t) '\n' ) |
2042 | 0 | || ( base32_character1 == (uint32_t) '\r' ) ) |
2043 | 0 | { |
2044 | 0 | if( ( strip_mode != LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
2045 | 0 | && ( strip_mode != LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) ) |
2046 | 0 | { |
2047 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
2048 | 0 | } |
2049 | 0 | else |
2050 | 0 | { |
2051 | | /* Handle multi-character end-of-line |
2052 | | */ |
2053 | 0 | if( ( base32_stream_index + base32_character_size ) < base32_stream_size ) |
2054 | 0 | { |
2055 | 0 | switch( base32_variant & 0xf0000000UL ) |
2056 | 0 | { |
2057 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
2058 | 0 | base32_character2 = base32_stream[ base32_stream_index + 1 ]; |
2059 | 0 | break; |
2060 | | |
2061 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
2062 | 0 | byte_stream_copy_to_uint16_big_endian( |
2063 | 0 | &( base32_stream[ base32_stream_index + 2 ] ), |
2064 | 0 | base32_character2 ); |
2065 | 0 | break; |
2066 | | |
2067 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
2068 | 0 | byte_stream_copy_to_uint16_little_endian( |
2069 | 0 | &( base32_stream[ base32_stream_index + 2 ] ), |
2070 | 0 | base32_character2 ); |
2071 | 0 | break; |
2072 | | |
2073 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
2074 | 0 | byte_stream_copy_to_uint32_big_endian( |
2075 | 0 | &( base32_stream[ base32_stream_index + 4 ] ), |
2076 | 0 | base32_character2 ); |
2077 | 0 | break; |
2078 | | |
2079 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
2080 | 0 | byte_stream_copy_to_uint32_little_endian( |
2081 | 0 | &( base32_stream[ base32_stream_index + 4 ] ), |
2082 | 0 | base32_character2 ); |
2083 | 0 | break; |
2084 | 0 | } |
2085 | 0 | if( ( base32_character2 == (uint32_t) '\n' ) |
2086 | 0 | || ( base32_character2 == (uint32_t) '\r' ) ) |
2087 | 0 | { |
2088 | 0 | base32_stream_index += base32_character_size; |
2089 | |
|
2090 | 0 | whitespace_size += base32_character_size; |
2091 | 0 | } |
2092 | 0 | } |
2093 | 0 | strip_mode = LIBUNA_STRIP_MODE_LEADING_WHITESPACE; |
2094 | 0 | } |
2095 | 0 | if( ( number_of_characters != 0 ) |
2096 | 0 | && ( character_limit != 0 ) ) |
2097 | 0 | { |
2098 | 0 | if( number_of_characters != (size_t) character_limit ) |
2099 | 0 | { |
2100 | 0 | libcerror_error_set( |
2101 | 0 | error, |
2102 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
2103 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
2104 | 0 | "%s: number of characters in line: %" PRIzd " does not match character limit: %" PRIu8 ".", |
2105 | 0 | function, |
2106 | 0 | number_of_characters, |
2107 | 0 | character_limit ); |
2108 | |
|
2109 | 0 | return( -1 ); |
2110 | 0 | } |
2111 | 0 | number_of_characters = 0; |
2112 | 0 | } |
2113 | 0 | whitespace_size += base32_character_size; |
2114 | 0 | } |
2115 | 0 | else if( ( base32_character1 == (uint32_t) ' ' ) |
2116 | 0 | || ( base32_character1 == (uint32_t) '\t' ) |
2117 | 0 | || ( base32_character1 == (uint32_t) '\v' ) ) |
2118 | 0 | { |
2119 | 0 | if( ( flags & LIBUNA_BASE32_FLAG_STRIP_WHITESPACE ) == 0 ) |
2120 | 0 | { |
2121 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
2122 | 0 | } |
2123 | 0 | else |
2124 | 0 | { |
2125 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
2126 | 0 | { |
2127 | 0 | strip_mode = LIBUNA_STRIP_MODE_TRAILING_WHITESPACE; |
2128 | 0 | } |
2129 | 0 | if( ( strip_mode != LIBUNA_STRIP_MODE_LEADING_WHITESPACE ) |
2130 | 0 | && ( strip_mode != LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) ) |
2131 | 0 | { |
2132 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
2133 | 0 | } |
2134 | 0 | else |
2135 | 0 | { |
2136 | 0 | whitespace_size += base32_character_size; |
2137 | 0 | } |
2138 | 0 | } |
2139 | 0 | } |
2140 | 0 | else if( strip_mode == LIBUNA_STRIP_MODE_LEADING_WHITESPACE ) |
2141 | 0 | { |
2142 | 0 | strip_mode = LIBUNA_STRIP_MODE_NON_WHITESPACE; |
2143 | 0 | } |
2144 | 0 | else if( strip_mode == LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) |
2145 | 0 | { |
2146 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
2147 | 0 | } |
2148 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
2149 | 0 | { |
2150 | 0 | switch( base32_variant & 0x000f0000UL ) |
2151 | 0 | { |
2152 | 0 | case LIBUNA_BASE32_VARIANT_ALPHABET_NORMAL: |
2153 | | /* A-Z is not a continous range on an EBCDIC based system |
2154 | | * it consists of the ranges: A-I, J-R, S-Z |
2155 | | */ |
2156 | 0 | if( ( base32_character1 >= (uint32_t) 'A' ) |
2157 | 0 | && ( base32_character1 <= (uint32_t) 'I' ) ) |
2158 | 0 | { |
2159 | 0 | number_of_characters++; |
2160 | 0 | } |
2161 | 0 | else if( ( base32_character1 >= (uint32_t) 'J' ) |
2162 | 0 | && ( base32_character1 <= (uint32_t) 'R' ) ) |
2163 | 0 | { |
2164 | 0 | number_of_characters++; |
2165 | 0 | } |
2166 | 0 | else if( ( base32_character1 >= (uint32_t) 'S' ) |
2167 | 0 | && ( base32_character1 <= (uint32_t) 'Z' ) ) |
2168 | 0 | { |
2169 | 0 | number_of_characters++; |
2170 | 0 | } |
2171 | 0 | else if( ( base32_character1 >= (uint32_t) '2' ) |
2172 | 0 | && ( base32_character1 <= (uint32_t) '7' ) ) |
2173 | 0 | { |
2174 | 0 | number_of_characters++; |
2175 | 0 | } |
2176 | 0 | else |
2177 | 0 | { |
2178 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
2179 | 0 | } |
2180 | 0 | break; |
2181 | | |
2182 | 0 | case LIBUNA_BASE32_VARIANT_ALPHABET_HEX: |
2183 | 0 | if( ( base32_character1 >= (uint32_t) '0' ) |
2184 | 0 | && ( base32_character1 <= (uint32_t) '9' ) ) |
2185 | 0 | { |
2186 | 0 | number_of_characters++; |
2187 | 0 | } |
2188 | | /* A-V is not a continous range on an EBCDIC based system |
2189 | | * it consists of the ranges: A-I, J-R, S-V |
2190 | | */ |
2191 | 0 | else if( ( base32_character1 >= (uint32_t) 'A' ) |
2192 | 0 | && ( base32_character1 <= (uint32_t) 'I' ) ) |
2193 | 0 | { |
2194 | 0 | number_of_characters++; |
2195 | 0 | } |
2196 | 0 | else if( ( base32_character1 >= (uint32_t) 'J' ) |
2197 | 0 | && ( base32_character1 <= (uint32_t) 'R' ) ) |
2198 | 0 | { |
2199 | 0 | number_of_characters++; |
2200 | 0 | } |
2201 | 0 | else if( ( base32_character1 >= (uint32_t) 'S' ) |
2202 | 0 | && ( base32_character1 <= (uint32_t) 'V' ) ) |
2203 | 0 | { |
2204 | 0 | number_of_characters++; |
2205 | 0 | } |
2206 | 0 | else |
2207 | 0 | { |
2208 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
2209 | 0 | } |
2210 | 0 | break; |
2211 | | |
2212 | 0 | default: |
2213 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
2214 | 0 | } |
2215 | 0 | } |
2216 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_INVALID_CHARACTER ) |
2217 | 0 | { |
2218 | 0 | libcerror_error_set( |
2219 | 0 | error, |
2220 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
2221 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
2222 | 0 | "%s: invalid character in base32 stream at index: %d.", |
2223 | 0 | function, |
2224 | 0 | base32_stream_index ); |
2225 | |
|
2226 | 0 | return( -1 ); |
2227 | 0 | } |
2228 | 0 | base32_stream_index += base32_character_size; |
2229 | 0 | } |
2230 | 0 | if( character_limit != 0 ) |
2231 | 0 | { |
2232 | 0 | if( number_of_characters > (size_t) character_limit ) |
2233 | 0 | { |
2234 | 0 | libcerror_error_set( |
2235 | 0 | error, |
2236 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
2237 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
2238 | 0 | "%s: number of characters in last line exceed maximum.", |
2239 | 0 | function ); |
2240 | |
|
2241 | 0 | return( -1 ); |
2242 | 0 | } |
2243 | 0 | } |
2244 | 0 | base32_stream_size -= whitespace_size; |
2245 | | |
2246 | | /* Make sure the byte stream is able to hold |
2247 | | * at least 5 bytes for each 8 base32 characters |
2248 | | */ |
2249 | 0 | safe_byte_stream_size = ( base32_stream_size * 5 ) / ( base32_character_size * 8 ); |
2250 | |
|
2251 | 0 | *byte_stream_size = safe_byte_stream_size * base32_character_size; |
2252 | |
|
2253 | 0 | return( 1 ); |
2254 | 0 | } |
2255 | | |
2256 | | /* Copies a byte stream from a base32 stream |
2257 | | * |
2258 | | * LIBUNA_BASE32_FLAG_STRIP_WHITESPACE removes leading space and tab characters, |
2259 | | * and trailing space, tab and end of line characters |
2260 | | * |
2261 | | * Returns 1 if successful or -1 on error |
2262 | | */ |
2263 | | int libuna_base32_stream_copy_to_byte_stream( |
2264 | | const uint8_t *base32_stream, |
2265 | | size_t base32_stream_size, |
2266 | | uint8_t *byte_stream, |
2267 | | size_t byte_stream_size, |
2268 | | uint32_t base32_variant, |
2269 | | uint8_t flags, |
2270 | | libcerror_error_t **error ) |
2271 | 0 | { |
2272 | 0 | static char *function = "libuna_base32_stream_copy_to_byte_stream"; |
2273 | 0 | size_t base32_character_size = 0; |
2274 | 0 | size_t base32_stream_index = 0; |
2275 | 0 | size_t byte_stream_index = 0; |
2276 | 0 | size_t number_of_characters = 0; |
2277 | 0 | size_t whitespace_size = 0; |
2278 | 0 | uint64_t base32_quintuplet = 0; |
2279 | 0 | uint32_t base32_character1 = 0; |
2280 | 0 | uint32_t base32_character2 = 0; |
2281 | 0 | uint8_t character_limit = 0; |
2282 | 0 | uint8_t padding_size = 0; |
2283 | 0 | uint8_t strip_mode = LIBUNA_STRIP_MODE_LEADING_WHITESPACE; |
2284 | |
|
2285 | 0 | if( base32_stream == NULL ) |
2286 | 0 | { |
2287 | 0 | libcerror_error_set( |
2288 | 0 | error, |
2289 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2290 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2291 | 0 | "%s: invalid base32 stream.", |
2292 | 0 | function ); |
2293 | |
|
2294 | 0 | return( -1 ); |
2295 | 0 | } |
2296 | 0 | if( base32_stream_size > (size_t) SSIZE_MAX ) |
2297 | 0 | { |
2298 | 0 | libcerror_error_set( |
2299 | 0 | error, |
2300 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2301 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
2302 | 0 | "%s: invalid base32 stream size value exceeds maximum.", |
2303 | 0 | function ); |
2304 | |
|
2305 | 0 | return( -1 ); |
2306 | 0 | } |
2307 | 0 | if( byte_stream == NULL ) |
2308 | 0 | { |
2309 | 0 | libcerror_error_set( |
2310 | 0 | error, |
2311 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2312 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2313 | 0 | "%s: invalid byte stream.", |
2314 | 0 | function ); |
2315 | |
|
2316 | 0 | return( -1 ); |
2317 | 0 | } |
2318 | 0 | if( byte_stream_size > (size_t) SSIZE_MAX ) |
2319 | 0 | { |
2320 | 0 | libcerror_error_set( |
2321 | 0 | error, |
2322 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2323 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
2324 | 0 | "%s: invalid byte stream size value exceeds maximum.", |
2325 | 0 | function ); |
2326 | |
|
2327 | 0 | return( -1 ); |
2328 | 0 | } |
2329 | 0 | switch( base32_variant & 0x000000ffUL ) |
2330 | 0 | { |
2331 | 0 | case LIBUNA_BASE32_VARIANT_CHARACTER_LIMIT_NONE: |
2332 | 0 | character_limit = 0; |
2333 | 0 | break; |
2334 | | |
2335 | 0 | case LIBUNA_BASE32_VARIANT_CHARACTER_LIMIT_64: |
2336 | 0 | character_limit = 64; |
2337 | 0 | break; |
2338 | | |
2339 | 0 | default: |
2340 | 0 | libcerror_error_set( |
2341 | 0 | error, |
2342 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2343 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2344 | 0 | "%s: unsupported base32 variant.", |
2345 | 0 | function ); |
2346 | |
|
2347 | 0 | return( -1 ); |
2348 | 0 | } |
2349 | 0 | switch( base32_variant & 0xf0000000UL ) |
2350 | 0 | { |
2351 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
2352 | 0 | base32_character_size = 1; |
2353 | 0 | break; |
2354 | | |
2355 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
2356 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
2357 | 0 | base32_character_size = 2; |
2358 | 0 | break; |
2359 | | |
2360 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
2361 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
2362 | 0 | base32_character_size = 4; |
2363 | 0 | break; |
2364 | | |
2365 | 0 | default: |
2366 | 0 | libcerror_error_set( |
2367 | 0 | error, |
2368 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2369 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2370 | 0 | "%s: unsupported base32 variant.", |
2371 | 0 | function ); |
2372 | |
|
2373 | 0 | return( -1 ); |
2374 | 0 | } |
2375 | 0 | if( ( flags & ~( LIBUNA_BASE32_FLAG_STRIP_WHITESPACE ) ) != 0 ) |
2376 | 0 | { |
2377 | 0 | libcerror_error_set( |
2378 | 0 | error, |
2379 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2380 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2381 | 0 | "%s: unsupported flags.", |
2382 | 0 | function ); |
2383 | |
|
2384 | 0 | return( -1 ); |
2385 | 0 | } |
2386 | | /* Ignore trailing whitespace |
2387 | | */ |
2388 | 0 | if( base32_stream_size > base32_character_size ) |
2389 | 0 | { |
2390 | 0 | base32_stream_index = base32_stream_size - base32_character_size; |
2391 | 0 | whitespace_size = 0; |
2392 | |
|
2393 | 0 | while( base32_stream_index > base32_character_size ) |
2394 | 0 | { |
2395 | 0 | switch( base32_variant & 0xf0000000UL ) |
2396 | 0 | { |
2397 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
2398 | 0 | base32_character1 = base32_stream[ base32_stream_index ]; |
2399 | 0 | break; |
2400 | | |
2401 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
2402 | 0 | byte_stream_copy_to_uint16_big_endian( |
2403 | 0 | &( base32_stream[ base32_stream_index ] ), |
2404 | 0 | base32_character1 ); |
2405 | 0 | break; |
2406 | | |
2407 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
2408 | 0 | byte_stream_copy_to_uint16_little_endian( |
2409 | 0 | &( base32_stream[ base32_stream_index ] ), |
2410 | 0 | base32_character1 ); |
2411 | 0 | break; |
2412 | | |
2413 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
2414 | 0 | byte_stream_copy_to_uint32_big_endian( |
2415 | 0 | &( base32_stream[ base32_stream_index ] ), |
2416 | 0 | base32_character1 ); |
2417 | 0 | break; |
2418 | | |
2419 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
2420 | 0 | byte_stream_copy_to_uint32_little_endian( |
2421 | 0 | &( base32_stream[ base32_stream_index ] ), |
2422 | 0 | base32_character1 ); |
2423 | 0 | break; |
2424 | 0 | } |
2425 | 0 | base32_stream_index -= base32_character_size; |
2426 | |
|
2427 | 0 | if( ( base32_character1 == (uint32_t) '\n' ) |
2428 | 0 | || ( base32_character1 == (uint32_t) '\r' ) ) |
2429 | 0 | { |
2430 | 0 | whitespace_size += base32_character_size; |
2431 | |
|
2432 | 0 | continue; |
2433 | 0 | } |
2434 | 0 | else if( ( flags & LIBUNA_BASE32_FLAG_STRIP_WHITESPACE ) == 0 ) |
2435 | 0 | { |
2436 | 0 | break; |
2437 | 0 | } |
2438 | 0 | if( ( base32_character1 == (uint32_t) ' ' ) |
2439 | 0 | || ( base32_character1 == (uint32_t) '\t' ) |
2440 | 0 | || ( base32_character1 == (uint32_t) '\v' ) ) |
2441 | 0 | { |
2442 | 0 | whitespace_size += base32_character_size; |
2443 | 0 | } |
2444 | 0 | else |
2445 | 0 | { |
2446 | 0 | break; |
2447 | 0 | } |
2448 | 0 | } |
2449 | 0 | base32_stream_size -= whitespace_size; |
2450 | 0 | } |
2451 | 0 | if( ( flags & LIBUNA_BASE32_FLAG_STRIP_WHITESPACE ) == 0 ) |
2452 | 0 | { |
2453 | 0 | strip_mode = LIBUNA_STRIP_MODE_NON_WHITESPACE; |
2454 | 0 | } |
2455 | 0 | base32_stream_index = 0; |
2456 | |
|
2457 | 0 | while( ( base32_stream_index + base32_character_size ) < base32_stream_size ) |
2458 | 0 | { |
2459 | 0 | switch( base32_variant & 0xf0000000UL ) |
2460 | 0 | { |
2461 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
2462 | 0 | base32_character1 = base32_stream[ base32_stream_index ]; |
2463 | 0 | break; |
2464 | | |
2465 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
2466 | 0 | byte_stream_copy_to_uint16_big_endian( |
2467 | 0 | &( base32_stream[ base32_stream_index ] ), |
2468 | 0 | base32_character1 ); |
2469 | 0 | break; |
2470 | | |
2471 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
2472 | 0 | byte_stream_copy_to_uint16_little_endian( |
2473 | 0 | &( base32_stream[ base32_stream_index ] ), |
2474 | 0 | base32_character1 ); |
2475 | 0 | break; |
2476 | | |
2477 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
2478 | 0 | byte_stream_copy_to_uint32_big_endian( |
2479 | 0 | &( base32_stream[ base32_stream_index ] ), |
2480 | 0 | base32_character1 ); |
2481 | 0 | break; |
2482 | | |
2483 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
2484 | 0 | byte_stream_copy_to_uint32_little_endian( |
2485 | 0 | &( base32_stream[ base32_stream_index ] ), |
2486 | 0 | base32_character1 ); |
2487 | 0 | break; |
2488 | 0 | } |
2489 | 0 | if( ( base32_character1 == (uint32_t) '\n' ) |
2490 | 0 | || ( base32_character1 == (uint32_t) '\r' ) ) |
2491 | 0 | { |
2492 | 0 | if( ( strip_mode != LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
2493 | 0 | && ( strip_mode != LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) ) |
2494 | 0 | { |
2495 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
2496 | 0 | } |
2497 | 0 | else |
2498 | 0 | { |
2499 | | /* Handle multi-character end-of-line |
2500 | | */ |
2501 | 0 | if( ( base32_stream_index + base32_character_size ) < base32_stream_size ) |
2502 | 0 | { |
2503 | 0 | switch( base32_variant & 0xf0000000UL ) |
2504 | 0 | { |
2505 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
2506 | 0 | base32_character2 = base32_stream[ base32_stream_index + 1 ]; |
2507 | 0 | break; |
2508 | | |
2509 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
2510 | 0 | byte_stream_copy_to_uint16_big_endian( |
2511 | 0 | &( base32_stream[ base32_stream_index + 2 ] ), |
2512 | 0 | base32_character2 ); |
2513 | 0 | break; |
2514 | | |
2515 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
2516 | 0 | byte_stream_copy_to_uint16_little_endian( |
2517 | 0 | &( base32_stream[ base32_stream_index + 2 ] ), |
2518 | 0 | base32_character2 ); |
2519 | 0 | break; |
2520 | | |
2521 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
2522 | 0 | byte_stream_copy_to_uint32_big_endian( |
2523 | 0 | &( base32_stream[ base32_stream_index + 4 ] ), |
2524 | 0 | base32_character2 ); |
2525 | 0 | break; |
2526 | | |
2527 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
2528 | 0 | byte_stream_copy_to_uint32_little_endian( |
2529 | 0 | &( base32_stream[ base32_stream_index + 4 ] ), |
2530 | 0 | base32_character2 ); |
2531 | 0 | break; |
2532 | 0 | } |
2533 | 0 | if( ( base32_character2 == (uint32_t) '\n' ) |
2534 | 0 | || ( base32_character2 == (uint32_t) '\r' ) ) |
2535 | 0 | { |
2536 | 0 | base32_stream_index += base32_character_size; |
2537 | 0 | } |
2538 | 0 | } |
2539 | 0 | strip_mode = LIBUNA_STRIP_MODE_LEADING_WHITESPACE; |
2540 | |
|
2541 | 0 | base32_stream_index += base32_character_size; |
2542 | 0 | } |
2543 | 0 | if( character_limit != 0 ) |
2544 | 0 | { |
2545 | 0 | if( number_of_characters != (size_t) character_limit ) |
2546 | 0 | { |
2547 | 0 | libcerror_error_set( |
2548 | 0 | error, |
2549 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
2550 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
2551 | 0 | "%s: number of characters in line does not match character limit.", |
2552 | 0 | function ); |
2553 | |
|
2554 | 0 | return( -1 ); |
2555 | 0 | } |
2556 | 0 | number_of_characters = 0; |
2557 | 0 | } |
2558 | 0 | } |
2559 | 0 | else if( ( base32_character1 == (uint32_t) ' ' ) |
2560 | 0 | || ( base32_character1 == (uint32_t) '\t' ) |
2561 | 0 | || ( base32_character1 == (uint32_t) '\v' ) ) |
2562 | 0 | { |
2563 | 0 | if( ( flags & LIBUNA_BASE32_FLAG_STRIP_WHITESPACE ) != 0 ) |
2564 | 0 | { |
2565 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
2566 | 0 | { |
2567 | 0 | strip_mode = LIBUNA_STRIP_MODE_TRAILING_WHITESPACE; |
2568 | 0 | } |
2569 | 0 | if( ( strip_mode != LIBUNA_STRIP_MODE_LEADING_WHITESPACE ) |
2570 | 0 | && ( strip_mode != LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) ) |
2571 | 0 | { |
2572 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
2573 | 0 | } |
2574 | 0 | base32_stream_index += base32_character_size; |
2575 | 0 | } |
2576 | 0 | else |
2577 | 0 | { |
2578 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
2579 | 0 | } |
2580 | 0 | } |
2581 | 0 | else if( strip_mode == LIBUNA_STRIP_MODE_LEADING_WHITESPACE ) |
2582 | 0 | { |
2583 | 0 | strip_mode = LIBUNA_STRIP_MODE_NON_WHITESPACE; |
2584 | 0 | } |
2585 | 0 | else if( strip_mode == LIBUNA_STRIP_MODE_TRAILING_WHITESPACE ) |
2586 | 0 | { |
2587 | 0 | strip_mode = LIBUNA_STRIP_MODE_INVALID_CHARACTER; |
2588 | 0 | } |
2589 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_INVALID_CHARACTER ) |
2590 | 0 | { |
2591 | 0 | libcerror_error_set( |
2592 | 0 | error, |
2593 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
2594 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
2595 | 0 | "%s: invalid character in base32 stream at index: %d.", |
2596 | 0 | function, |
2597 | 0 | base32_stream_index ); |
2598 | |
|
2599 | 0 | return( -1 ); |
2600 | 0 | } |
2601 | 0 | if( strip_mode == LIBUNA_STRIP_MODE_NON_WHITESPACE ) |
2602 | 0 | { |
2603 | 0 | if( padding_size > 0 ) |
2604 | 0 | { |
2605 | 0 | libcerror_error_set( |
2606 | 0 | error, |
2607 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2608 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2609 | 0 | "%s: invalid 1st base32 quintet.", |
2610 | 0 | function ); |
2611 | |
|
2612 | 0 | return( -1 ); |
2613 | 0 | } |
2614 | | /* Convert the base32 stream into a base32 quintuplet |
2615 | | */ |
2616 | 0 | if( libuna_base32_quintuplet_copy_from_base32_stream( |
2617 | 0 | &base32_quintuplet, |
2618 | 0 | base32_stream, |
2619 | 0 | base32_stream_size, |
2620 | 0 | &base32_stream_index, |
2621 | 0 | &padding_size, |
2622 | 0 | base32_variant, |
2623 | 0 | error ) != 1 ) |
2624 | 0 | { |
2625 | 0 | libcerror_error_set( |
2626 | 0 | error, |
2627 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
2628 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
2629 | 0 | "%s: unable to copy base32 quintuplet from base32 stream.", |
2630 | 0 | function ); |
2631 | |
|
2632 | 0 | return( -1 ); |
2633 | 0 | } |
2634 | | /* Convert the base32 quintuplet into a byte stream |
2635 | | */ |
2636 | 0 | if( libuna_base32_quintuplet_copy_to_byte_stream( |
2637 | 0 | base32_quintuplet, |
2638 | 0 | byte_stream, |
2639 | 0 | byte_stream_size, |
2640 | 0 | &byte_stream_index, |
2641 | 0 | padding_size, |
2642 | 0 | error ) != 1 ) |
2643 | 0 | { |
2644 | 0 | libcerror_error_set( |
2645 | 0 | error, |
2646 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
2647 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
2648 | 0 | "%s: unable to copy base32 quintuplet to byte stream.", |
2649 | 0 | function ); |
2650 | |
|
2651 | 0 | return( -1 ); |
2652 | 0 | } |
2653 | 0 | number_of_characters += 8 - padding_size; |
2654 | 0 | } |
2655 | 0 | } |
2656 | 0 | if( character_limit != 0 ) |
2657 | 0 | { |
2658 | 0 | if( number_of_characters > (size_t) character_limit ) |
2659 | 0 | { |
2660 | 0 | libcerror_error_set( |
2661 | 0 | error, |
2662 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
2663 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
2664 | 0 | "%s: number of characters in last line exceed maximum.", |
2665 | 0 | function ); |
2666 | |
|
2667 | 0 | return( -1 ); |
2668 | 0 | } |
2669 | 0 | } |
2670 | 0 | return( 1 ); |
2671 | 0 | } |
2672 | | |
2673 | | /* Determines the size of a base32 stream from a byte stream |
2674 | | * Returns 1 if successful or -1 on error |
2675 | | */ |
2676 | | int libuna_base32_stream_size_from_byte_stream( |
2677 | | const uint8_t *byte_stream, |
2678 | | size_t byte_stream_size, |
2679 | | size_t *base32_stream_size, |
2680 | | uint32_t base32_variant, |
2681 | | libcerror_error_t **error ) |
2682 | 0 | { |
2683 | 0 | static char *function = "libuna_base32_stream_size_from_byte_stream"; |
2684 | 0 | size_t base32_character_size = 0; |
2685 | 0 | size_t safe_base32_stream_size = 0; |
2686 | 0 | size_t whitespace_size = 0; |
2687 | 0 | uint8_t character_limit = 0; |
2688 | |
|
2689 | 0 | if( byte_stream == NULL ) |
2690 | 0 | { |
2691 | 0 | libcerror_error_set( |
2692 | 0 | error, |
2693 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2694 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2695 | 0 | "%s: invalid byte stream.", |
2696 | 0 | function ); |
2697 | |
|
2698 | 0 | return( -1 ); |
2699 | 0 | } |
2700 | 0 | if( byte_stream_size > (size_t) SSIZE_MAX ) |
2701 | 0 | { |
2702 | 0 | libcerror_error_set( |
2703 | 0 | error, |
2704 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2705 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
2706 | 0 | "%s: invalid byte stream size value exceeds maximum.", |
2707 | 0 | function ); |
2708 | |
|
2709 | 0 | return( -1 ); |
2710 | 0 | } |
2711 | 0 | if( base32_stream_size == NULL ) |
2712 | 0 | { |
2713 | 0 | libcerror_error_set( |
2714 | 0 | error, |
2715 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2716 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2717 | 0 | "%s: invalid base32 stream size.", |
2718 | 0 | function ); |
2719 | |
|
2720 | 0 | return( -1 ); |
2721 | 0 | } |
2722 | 0 | switch( base32_variant & 0x000000ffUL ) |
2723 | 0 | { |
2724 | 0 | case LIBUNA_BASE32_VARIANT_CHARACTER_LIMIT_NONE: |
2725 | 0 | character_limit = 0; |
2726 | 0 | break; |
2727 | | |
2728 | 0 | case LIBUNA_BASE32_VARIANT_CHARACTER_LIMIT_64: |
2729 | 0 | character_limit = 64; |
2730 | 0 | break; |
2731 | | |
2732 | 0 | default: |
2733 | 0 | libcerror_error_set( |
2734 | 0 | error, |
2735 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2736 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2737 | 0 | "%s: unsupported base32 variant.", |
2738 | 0 | function ); |
2739 | |
|
2740 | 0 | return( -1 ); |
2741 | 0 | } |
2742 | 0 | switch( base32_variant & 0xf0000000UL ) |
2743 | 0 | { |
2744 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_BYTE_STREAM: |
2745 | 0 | base32_character_size = 1; |
2746 | 0 | break; |
2747 | | |
2748 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_BIG_ENDIAN: |
2749 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF16_LITTLE_ENDIAN: |
2750 | 0 | base32_character_size = 2; |
2751 | 0 | break; |
2752 | | |
2753 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_BIG_ENDIAN: |
2754 | 0 | case LIBUNA_BASE32_VARIANT_ENCODING_UTF32_LITTLE_ENDIAN: |
2755 | 0 | base32_character_size = 4; |
2756 | 0 | break; |
2757 | | |
2758 | 0 | default: |
2759 | 0 | libcerror_error_set( |
2760 | 0 | error, |
2761 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2762 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2763 | 0 | "%s: unsupported base32 variant.", |
2764 | 0 | function ); |
2765 | |
|
2766 | 0 | return( -1 ); |
2767 | 0 | } |
2768 | | /* Make sure the base32 stream is able to hold |
2769 | | * at least 8 base32 characters for each 5 bytes |
2770 | | */ |
2771 | 0 | safe_base32_stream_size = byte_stream_size / 5; |
2772 | |
|
2773 | 0 | if( ( byte_stream_size % 5 ) != 0 ) |
2774 | 0 | { |
2775 | 0 | safe_base32_stream_size += 1; |
2776 | 0 | } |
2777 | 0 | safe_base32_stream_size *= 8; |
2778 | |
|
2779 | 0 | if( character_limit != 0 ) |
2780 | 0 | { |
2781 | 0 | whitespace_size = safe_base32_stream_size / character_limit; |
2782 | |
|
2783 | 0 | if( ( safe_base32_stream_size % character_limit ) != 0 ) |
2784 | 0 | { |
2785 | 0 | whitespace_size += 1; |
2786 | 0 | } |
2787 | 0 | safe_base32_stream_size += whitespace_size; |
2788 | 0 | } |
2789 | 0 | *base32_stream_size = safe_base32_stream_size * base32_character_size; |
2790 | |
|
2791 | 0 | return( 1 ); |
2792 | 0 | } |
2793 | | |
2794 | | /* Copies a base32 stream from a byte stream |
2795 | | * Returns 1 if successful or -1 on error |
2796 | | */ |
2797 | | int libuna_base32_stream_copy_from_byte_stream( |
2798 | | uint8_t *base32_stream, |
2799 | | size_t base32_stream_size, |
2800 | | const uint8_t *byte_stream, |
2801 | | size_t byte_stream_size, |
2802 | | uint32_t base32_variant, |
2803 | | libcerror_error_t **error ) |
2804 | 0 | { |
2805 | 0 | static char *function = "libuna_base32_stream_copy_from_byte_stream"; |
2806 | 0 | size_t base32_stream_index = 0; |
2807 | |
|
2808 | 0 | if( libuna_base32_stream_with_index_copy_from_byte_stream( |
2809 | 0 | base32_stream, |
2810 | 0 | base32_stream_size, |
2811 | 0 | &base32_stream_index, |
2812 | 0 | byte_stream, |
2813 | 0 | byte_stream_size, |
2814 | 0 | base32_variant, |
2815 | 0 | error ) != 1 ) |
2816 | 0 | { |
2817 | 0 | libcerror_error_set( |
2818 | 0 | error, |
2819 | 0 | LIBCERROR_ERROR_DOMAIN_RUNTIME, |
2820 | 0 | LIBCERROR_RUNTIME_ERROR_COPY_FAILED, |
2821 | 0 | "%s: unable to copy base32 stream from byte stream.", |
2822 | 0 | function ); |
2823 | |
|
2824 | 0 | return( -1 ); |
2825 | 0 | } |
2826 | 0 | return( 1 ); |
2827 | 0 | } |
2828 | | |
2829 | | /* Copies a base32 stream from a byte stream |
2830 | | * Returns 1 if successful or -1 on error |
2831 | | */ |
2832 | | int libuna_base32_stream_with_index_copy_from_byte_stream( |
2833 | | uint8_t *base32_stream, |
2834 | | size_t base32_stream_size, |
2835 | | size_t *base32_stream_index, |
2836 | | const uint8_t *byte_stream, |
2837 | | size_t byte_stream_size, |
2838 | | uint32_t base32_variant, |
2839 | | libcerror_error_t **error ) |
2840 | 0 | { |
2841 | 0 | static char *function = "libuna_base32_stream_with_index_copy_from_byte_stream"; |
2842 | 0 | size_t calculated_base32_stream_size = 0; |
2843 | 0 | size_t safe_base32_stream_index = 0; |
2844 | 0 | size_t byte_stream_index = 0; |
2845 | 0 | size_t number_of_characters = 0; |
2846 | 0 | size_t whitespace_size = 0; |
2847 | 0 | uint64_t base32_quintuplet = 0; |
2848 | 0 | uint8_t character_limit = 0; |
2849 | 0 | uint8_t padding_size = 0; |
2850 | |
|
2851 | 0 | if( base32_stream == NULL ) |
2852 | 0 | { |
2853 | 0 | libcerror_error_set( |
2854 | 0 | error, |
2855 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2856 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2857 | 0 | "%s: invalid base32 stream.", |
2858 | 0 | function ); |
2859 | |
|
2860 | 0 | return( -1 ); |
2861 | 0 | } |
2862 | 0 | if( base32_stream_size > (size_t) SSIZE_MAX ) |
2863 | 0 | { |
2864 | 0 | libcerror_error_set( |
2865 | 0 | error, |
2866 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2867 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
2868 | 0 | "%s: invalid base32 stream size value exceeds maximum.", |
2869 | 0 | function ); |
2870 | |
|
2871 | 0 | return( -1 ); |
2872 | 0 | } |
2873 | 0 | if( base32_stream_index == NULL ) |
2874 | 0 | { |
2875 | 0 | libcerror_error_set( |
2876 | 0 | error, |
2877 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2878 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2879 | 0 | "%s: invalid base32 stream index.", |
2880 | 0 | function ); |
2881 | |
|
2882 | 0 | return( -1 ); |
2883 | 0 | } |
2884 | 0 | if( *base32_stream_index >= base32_stream_size ) |
2885 | 0 | { |
2886 | 0 | libcerror_error_set( |
2887 | 0 | error, |
2888 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2889 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
2890 | 0 | "%s: base32 stream string too small.", |
2891 | 0 | function ); |
2892 | |
|
2893 | 0 | return( -1 ); |
2894 | 0 | } |
2895 | 0 | if( byte_stream == NULL ) |
2896 | 0 | { |
2897 | 0 | libcerror_error_set( |
2898 | 0 | error, |
2899 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2900 | 0 | LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE, |
2901 | 0 | "%s: invalid byte stream.", |
2902 | 0 | function ); |
2903 | |
|
2904 | 0 | return( -1 ); |
2905 | 0 | } |
2906 | 0 | if( byte_stream_size > (size_t) SSIZE_MAX ) |
2907 | 0 | { |
2908 | 0 | libcerror_error_set( |
2909 | 0 | error, |
2910 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2911 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM, |
2912 | 0 | "%s: invalid byte stream size value exceeds maximum.", |
2913 | 0 | function ); |
2914 | |
|
2915 | 0 | return( -1 ); |
2916 | 0 | } |
2917 | 0 | switch( base32_variant & 0x000000ffUL ) |
2918 | 0 | { |
2919 | 0 | case LIBUNA_BASE32_VARIANT_CHARACTER_LIMIT_NONE: |
2920 | 0 | character_limit = 0; |
2921 | 0 | break; |
2922 | | |
2923 | 0 | case LIBUNA_BASE32_VARIANT_CHARACTER_LIMIT_64: |
2924 | 0 | character_limit = 64; |
2925 | 0 | break; |
2926 | | |
2927 | 0 | default: |
2928 | 0 | libcerror_error_set( |
2929 | 0 | error, |
2930 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2931 | 0 | LIBCERROR_ARGUMENT_ERROR_UNSUPPORTED_VALUE, |
2932 | 0 | "%s: unsupported base32 variant.", |
2933 | 0 | function ); |
2934 | |
|
2935 | 0 | return( -1 ); |
2936 | 0 | } |
2937 | 0 | safe_base32_stream_index = *base32_stream_index; |
2938 | | |
2939 | | /* Make sure the base32 stream is able to hold |
2940 | | * at least 8 base32 characters for each 5 bytes |
2941 | | */ |
2942 | 0 | calculated_base32_stream_size = byte_stream_size / 5; |
2943 | |
|
2944 | 0 | if( ( byte_stream_size % 5 ) != 0 ) |
2945 | 0 | { |
2946 | 0 | calculated_base32_stream_size += 1; |
2947 | 0 | } |
2948 | 0 | calculated_base32_stream_size *= 8; |
2949 | |
|
2950 | 0 | if( character_limit != 0 ) |
2951 | 0 | { |
2952 | 0 | whitespace_size = calculated_base32_stream_size / character_limit; |
2953 | |
|
2954 | 0 | if( ( calculated_base32_stream_size % character_limit ) != 0 ) |
2955 | 0 | { |
2956 | 0 | whitespace_size += 1; |
2957 | 0 | } |
2958 | 0 | calculated_base32_stream_size += whitespace_size; |
2959 | 0 | } |
2960 | 0 | if( base32_stream_size < calculated_base32_stream_size ) |
2961 | 0 | { |
2962 | 0 | libcerror_error_set( |
2963 | 0 | error, |
2964 | 0 | LIBCERROR_ERROR_DOMAIN_ARGUMENTS, |
2965 | 0 | LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL, |
2966 | 0 | "%s: base32 stream is too small.", |
2967 | 0 | function ); |
2968 | |
|
2969 | 0 | return( -1 ); |
2970 | 0 | } |
2971 | 0 | while( byte_stream_index < byte_stream_size ) |
2972 | 0 | { |
2973 | | /* Convert the byte stream into a base32 quintuplet |
2974 | | */ |
2975 | 0 | if( libuna_base32_quintuplet_copy_from_byte_stream( |
2976 | 0 | &base32_quintuplet, |
2977 | 0 | byte_stream, |
2978 | 0 | byte_stream_size, |
2979 | 0 | &byte_stream_index, |
2980 | 0 | &padding_size, |
2981 | 0 | error ) != 1 ) |
2982 | 0 | { |
2983 | 0 | libcerror_error_set( |
2984 | 0 | error, |
2985 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
2986 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
2987 | 0 | "%s: unable to copy base32 quintuplet from byte stream.", |
2988 | 0 | function ); |
2989 | |
|
2990 | 0 | return( -1 ); |
2991 | 0 | } |
2992 | | /* Convert the base32 quintuplet into a base32 stream |
2993 | | */ |
2994 | 0 | if( libuna_base32_quintuplet_copy_to_base32_stream( |
2995 | 0 | base32_quintuplet, |
2996 | 0 | base32_stream, |
2997 | 0 | base32_stream_size, |
2998 | 0 | &safe_base32_stream_index, |
2999 | 0 | padding_size, |
3000 | 0 | base32_variant, |
3001 | 0 | error ) != 1 ) |
3002 | 0 | { |
3003 | 0 | libcerror_error_set( |
3004 | 0 | error, |
3005 | 0 | LIBCERROR_ERROR_DOMAIN_CONVERSION, |
3006 | 0 | LIBCERROR_CONVERSION_ERROR_INPUT_FAILED, |
3007 | 0 | "%s: unable to copy base32 quintuplet to base32 stream.", |
3008 | 0 | function ); |
3009 | |
|
3010 | 0 | return( -1 ); |
3011 | 0 | } |
3012 | 0 | if( character_limit != 0 ) |
3013 | 0 | { |
3014 | 0 | number_of_characters += 8; |
3015 | |
|
3016 | 0 | if( number_of_characters >= (size_t) character_limit ) |
3017 | 0 | { |
3018 | 0 | base32_stream[ safe_base32_stream_index++ ] = (uint8_t) '\n'; |
3019 | |
|
3020 | 0 | number_of_characters = 0; |
3021 | 0 | } |
3022 | 0 | } |
3023 | 0 | } |
3024 | 0 | if( character_limit != 0 ) |
3025 | 0 | { |
3026 | 0 | if( number_of_characters != 0 ) |
3027 | 0 | { |
3028 | 0 | base32_stream[ safe_base32_stream_index++ ] = (uint8_t) '\n'; |
3029 | 0 | } |
3030 | 0 | } |
3031 | 0 | *base32_stream_index = safe_base32_stream_index; |
3032 | |
|
3033 | 0 | return( 1 ); |
3034 | 0 | } |
3035 | | |