Coverage Report

Created: 2024-02-25 07:20

/src/libfwevt/libuna/libuna_codepage_windows_1256.c
Line
Count
Source (jump to first uncovered line)
1
/*
2
 * Windows 1256 codepage (Arabic) 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
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 * (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
 *
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 * 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 <types.h>
24
25
#include "libuna_codepage_windows_1256.h"
26
#include "libuna_libcerror.h"
27
#include "libuna_types.h"
28
29
/* Extended ASCII to Unicode character lookup table for the Windows 1256 codepage
30
 * Unknown are filled with the Unicode replacement character 0xfffd
31
 */
32
const uint16_t libuna_codepage_windows_1256_byte_stream_to_unicode_base_0x80[ 128 ] = {
33
  0x20ac, 0x067e, 0x201a, 0x0192, 0x201e, 0x2026, 0x2020, 0x2021,
34
  0x02c6, 0x2030, 0x0679, 0x2039, 0x0152, 0x0686, 0x0698, 0x0688,
35
  0x06af, 0x2018, 0x2019, 0x201c, 0x201d, 0x2022, 0x2013, 0x2014,
36
  0x06a9, 0x2122, 0x0691, 0x203a, 0x0153, 0x200c, 0x200d, 0x06ba,
37
  0x00a0, 0x060c, 0x00a2, 0x00a3, 0x00a4, 0x00a5, 0x00a6, 0x00a7,
38
  0x00a8, 0x00a9, 0x06be, 0x00ab, 0x00ac, 0x00ad, 0x00ae, 0x00af,
39
  0x00b0, 0x00b1, 0x00b2, 0x00b3, 0x00b4, 0x00b5, 0x00b6, 0x00b7,
40
  0x00b8, 0x00b9, 0x061b, 0x00bb, 0x00bc, 0x00bd, 0x00be, 0x061f,
41
  0x06c1, 0x0621, 0x0622, 0x0623, 0x0624, 0x0625, 0x0626, 0x0627,
42
  0x0628, 0x0629, 0x062a, 0x062b, 0x062c, 0x062d, 0x062e, 0x062f,
43
  0x0630, 0x0631, 0x0632, 0x0633, 0x0634, 0x0635, 0x0636, 0x00d7,
44
  0x0637, 0x0638, 0x0639, 0x063a, 0x0640, 0x0641, 0x0642, 0x0643,
45
  0x00e0, 0x0644, 0x00e2, 0x0645, 0x0646, 0x0647, 0x0648, 0x00e7,
46
  0x00e8, 0x00e9, 0x00ea, 0x00eb, 0x0649, 0x064a, 0x00ee, 0x00ef,
47
  0x064b, 0x064c, 0x064d, 0x064e, 0x00f4, 0x064f, 0x0650, 0x00f7,
48
  0x0651, 0x00f9, 0x0652, 0x00fb, 0x00fc, 0x200e, 0x200f, 0x06d2
49
};
50
51
/* Unicode to ASCII character lookup tables for the Windows 1256 codepage
52
 * Unknown are filled with the ASCII replacement character 0x1a
53
 */
54
const uint8_t libuna_codepage_windows_1256_unicode_to_byte_stream_base_0x00a0[ 32 ] = {
55
  0xa0, 0x1a, 0xa2, 0xa3, 0xa4, 0xa5, 0xa6, 0xa7,
56
  0xa8, 0xa9, 0x1a, 0xab, 0xac, 0xad, 0xae, 0xaf,
57
  0xb0, 0xb1, 0xb2, 0xb3, 0xb4, 0xb5, 0xb6, 0xb7,
58
  0xb8, 0xb9, 0x1a, 0xbb, 0xbc, 0xbd, 0xbe, 0x1a
59
};
60
61
const uint8_t libuna_codepage_windows_1256_unicode_to_byte_stream_base_0x00e0[ 32 ] = {
62
  0xe0, 0x1a, 0xe2, 0x1a, 0x1a, 0x1a, 0x1a, 0xe7,
63
  0xe8, 0xe9, 0xea, 0xeb, 0x1a, 0x1a, 0xee, 0xef,
64
  0x1a, 0x1a, 0x1a, 0x1a, 0xf4, 0x1a, 0x1a, 0xf7,
65
  0x1a, 0xf9, 0x1a, 0xfb, 0xfc, 0x1a, 0x1a, 0x1a
66
};
67
68
const uint8_t libuna_codepage_windows_1256_unicode_to_byte_stream_base_0x0618[ 64 ] = {
69
  0x1a, 0x1a, 0x1a, 0xba, 0x1a, 0x1a, 0x1a, 0xbf,
70
  0x1a, 0xc1, 0xc2, 0xc3, 0xc4, 0xc5, 0xc6, 0xc7,
71
  0xc8, 0xc9, 0xca, 0xcb, 0xcc, 0xcd, 0xce, 0xcf,
72
  0xd0, 0xd1, 0xd2, 0xd3, 0xd4, 0xd5, 0xd6, 0xd8,
73
  0xd9, 0xda, 0xdb, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a,
74
  0xdc, 0xdd, 0xde, 0xdf, 0xe1, 0xe3, 0xe4, 0xe5,
75
  0xe6, 0xec, 0xed, 0xf0, 0xf1, 0xf2, 0xf3, 0xf5,
76
  0xf6, 0xf8, 0xfa, 0x1a, 0x1a, 0x1a, 0x1a, 0x1a
77
};
78
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const uint8_t libuna_codepage_windows_1256_unicode_to_byte_stream_base_0x2008[ 32 ] = {
80
  0x1a, 0x1a, 0x1a, 0x1a, 0x9d, 0x9e, 0xfd, 0xfe,
81
  0x1a, 0x1a, 0x1a, 0x96, 0x97, 0x1a, 0x1a, 0x1a,
82
  0x91, 0x92, 0x82, 0x1a, 0x93, 0x94, 0x84, 0x1a,
83
  0x86, 0x87, 0x95, 0x1a, 0x1a, 0x1a, 0x85, 0x1a
84
};
85
86
/* Copies an Unicode character from a Windows 1256 encoded byte stream
87
 * Returns 1 if successful or -1 on error
88
 */
89
int libuna_codepage_windows_1256_copy_from_byte_stream(
90
     libuna_unicode_character_t *unicode_character,
91
     const uint8_t *byte_stream,
92
     size_t byte_stream_size,
93
     size_t *byte_stream_index,
94
     libcerror_error_t **error )
95
0
{
96
0
  static char *function                             = "libuna_codepage_windows_1256_copy_from_byte_stream";
97
0
  libuna_unicode_character_t safe_unicode_character = 0xfffd;
98
0
  size_t safe_byte_stream_index                     = 0;
99
0
  uint8_t byte_stream_character                     = 0;
100
101
0
  if( unicode_character == NULL )
102
0
  {
103
0
    libcerror_error_set(
104
0
     error,
105
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
106
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
107
0
     "%s: invalid Unicode character.",
108
0
     function );
109
110
0
    return( -1 );
111
0
  }
112
0
  if( byte_stream == NULL )
113
0
  {
114
0
    libcerror_error_set(
115
0
     error,
116
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
117
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
118
0
     "%s: invalid byte stream.",
119
0
     function );
120
121
0
    return( -1 );
122
0
  }
123
0
  if( byte_stream_size > (size_t) SSIZE_MAX )
124
0
  {
125
0
    libcerror_error_set(
126
0
     error,
127
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
128
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
129
0
     "%s: invalid byte stream size value exceeds maximum.",
130
0
     function );
131
132
0
    return( -1 );
133
0
  }
134
0
  if( byte_stream_index == NULL )
135
0
  {
136
0
    libcerror_error_set(
137
0
     error,
138
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
139
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
140
0
     "%s: invalid byte stream index.",
141
0
     function );
142
143
0
    return( -1 );
144
0
  }
145
0
  safe_byte_stream_index = *byte_stream_index;
146
147
0
  if( safe_byte_stream_index >= byte_stream_size )
148
0
  {
149
0
    libcerror_error_set(
150
0
     error,
151
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
152
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
153
0
     "%s: byte stream too small.",
154
0
     function );
155
156
0
    return( -1 );
157
0
  }
158
0
  byte_stream_character = byte_stream[ safe_byte_stream_index++ ];
159
160
0
  if( byte_stream_character < 0x80 )
161
0
  {
162
0
    safe_unicode_character = byte_stream_character;
163
0
  }
164
0
  else
165
0
  {
166
0
    byte_stream_character -= 0x80;
167
168
0
    safe_unicode_character = libuna_codepage_windows_1256_byte_stream_to_unicode_base_0x80[ byte_stream_character ];
169
0
  }
170
0
  *unicode_character = safe_unicode_character;
171
0
  *byte_stream_index = safe_byte_stream_index;
172
173
0
  return( 1 );
174
0
}
175
176
/* Copies an Unicode character to a Windows 1256 encoded byte stream
177
 * Returns 1 if successful or -1 on error
178
 */
179
int libuna_codepage_windows_1256_copy_to_byte_stream(
180
     libuna_unicode_character_t unicode_character,
181
     uint8_t *byte_stream,
182
     size_t byte_stream_size,
183
     size_t *byte_stream_index,
184
     libcerror_error_t **error )
185
0
{
186
0
  static char *function         = "libuna_codepage_windows_1256_copy_to_byte_stream";
187
0
  size_t safe_byte_stream_index = 0;
188
0
  uint16_t byte_stream_value    = 0x001a;
189
190
0
  if( byte_stream == NULL )
191
0
  {
192
0
    libcerror_error_set(
193
0
     error,
194
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
195
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
196
0
     "%s: invalid byte stream.",
197
0
     function );
198
199
0
    return( -1 );
200
0
  }
201
0
  if( byte_stream_size > (size_t) SSIZE_MAX )
202
0
  {
203
0
    libcerror_error_set(
204
0
     error,
205
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
206
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_EXCEEDS_MAXIMUM,
207
0
     "%s: invalid byte stream size value exceeds maximum.",
208
0
     function );
209
210
0
    return( -1 );
211
0
  }
212
0
  if( byte_stream_index == NULL )
213
0
  {
214
0
    libcerror_error_set(
215
0
     error,
216
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
217
0
     LIBCERROR_ARGUMENT_ERROR_INVALID_VALUE,
218
0
     "%s: invalid byte stream index.",
219
0
     function );
220
221
0
    return( -1 );
222
0
  }
223
0
  safe_byte_stream_index = *byte_stream_index;
224
225
0
  if( safe_byte_stream_index >= byte_stream_size )
226
0
  {
227
0
    libcerror_error_set(
228
0
     error,
229
0
     LIBCERROR_ERROR_DOMAIN_ARGUMENTS,
230
0
     LIBCERROR_ARGUMENT_ERROR_VALUE_TOO_SMALL,
231
0
     "%s: byte stream too small.",
232
0
     function );
233
234
0
    return( -1 );
235
0
  }
236
0
  if( unicode_character < 0x0080 )
237
0
  {
238
0
    byte_stream_value = (uint16_t) unicode_character;
239
0
  }
240
0
  else if( ( unicode_character >= 0x00a0 )
241
0
        && ( unicode_character < 0x00c0 ) )
242
0
  {
243
0
    unicode_character -= 0x00a0;
244
245
0
    byte_stream_value = libuna_codepage_windows_1256_unicode_to_byte_stream_base_0x00a0[ unicode_character ];
246
0
  }
247
0
  else if( ( unicode_character >= 0x00e0 )
248
0
        && ( unicode_character < 0x0100 ) )
249
0
  {
250
0
    unicode_character -= 0x00e0;
251
252
0
    byte_stream_value = libuna_codepage_windows_1256_unicode_to_byte_stream_base_0x00e0[ unicode_character ];
253
0
  }
254
0
  else if( ( unicode_character >= 0x0618 )
255
0
        && ( unicode_character < 0x0658 ) )
256
0
  {
257
0
    unicode_character -= 0x0618;
258
259
0
    byte_stream_value = libuna_codepage_windows_1256_unicode_to_byte_stream_base_0x0618[ unicode_character ];
260
0
  }
261
0
  else if( ( unicode_character >= 0x2008 )
262
0
        && ( unicode_character < 0x2028 ) )
263
0
  {
264
0
    unicode_character -= 0x2008;
265
266
0
    byte_stream_value = libuna_codepage_windows_1256_unicode_to_byte_stream_base_0x2008[ unicode_character ];
267
0
  }
268
0
  else switch( unicode_character )
269
0
  {
270
0
    case 0x00d7:
271
0
      byte_stream_value = 0xd7;
272
0
      break;
273
274
0
    case 0x0152:
275
0
      byte_stream_value = 0x8c;
276
0
      break;
277
278
0
    case 0x0153:
279
0
      byte_stream_value = 0x9c;
280
0
      break;
281
282
0
    case 0x0192:
283
0
      byte_stream_value = 0x83;
284
0
      break;
285
286
0
    case 0x02c6:
287
0
      byte_stream_value = 0x88;
288
0
      break;
289
290
0
    case 0x060c:
291
0
      byte_stream_value = 0xa1;
292
0
      break;
293
294
0
    case 0x0679:
295
0
      byte_stream_value = 0x8a;
296
0
      break;
297
298
0
    case 0x067e:
299
0
      byte_stream_value = 0x81;
300
0
      break;
301
302
0
    case 0x0686:
303
0
      byte_stream_value = 0x8d;
304
0
      break;
305
306
0
    case 0x0688:
307
0
      byte_stream_value = 0x8f;
308
0
      break;
309
310
0
    case 0x0691:
311
0
      byte_stream_value = 0x9a;
312
0
      break;
313
314
0
    case 0x0698:
315
0
      byte_stream_value = 0x8e;
316
0
      break;
317
318
0
    case 0x06a9:
319
0
      byte_stream_value = 0x98;
320
0
      break;
321
322
0
    case 0x06af:
323
0
      byte_stream_value = 0x90;
324
0
      break;
325
326
0
    case 0x06ba:
327
0
      byte_stream_value = 0x9f;
328
0
      break;
329
330
0
    case 0x06be:
331
0
      byte_stream_value = 0xaa;
332
0
      break;
333
334
0
    case 0x06c1:
335
0
      byte_stream_value = 0xc0;
336
0
      break;
337
338
0
    case 0x06d2:
339
0
      byte_stream_value = 0xff;
340
0
      break;
341
342
0
    case 0x2030:
343
0
      byte_stream_value = 0x89;
344
0
      break;
345
346
0
    case 0x2039:
347
0
      byte_stream_value = 0x8b;
348
0
      break;
349
350
0
    case 0x203a:
351
0
      byte_stream_value = 0x9b;
352
0
      break;
353
354
0
    case 0x20ac:
355
0
      byte_stream_value = 0x80;
356
0
      break;
357
358
0
    case 0x2122:
359
0
      byte_stream_value = 0x99;
360
0
      break;
361
362
0
    default:
363
0
      byte_stream_value = 0x1a;
364
0
      break;
365
0
  }
366
0
  byte_stream[ safe_byte_stream_index++ ] = (uint8_t) ( byte_stream_value & 0x00ff );
367
368
0
  *byte_stream_index = safe_byte_stream_index;
369
370
0
  return( 1 );
371
0
}
372