File: | src/usr.bin/file/magic-test.c |
Warning: | line 236, column 7 Array access (from variable 's') results in a null pointer dereference |
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1 | /* $OpenBSD: magic-test.c,v 1.27 2019/01/15 09:24:59 nicm Exp $ */ | |||
2 | ||||
3 | /* | |||
4 | * Copyright (c) 2015 Nicholas Marriott <nicm@openbsd.org> | |||
5 | * | |||
6 | * Permission to use, copy, modify, and distribute this software for any | |||
7 | * purpose with or without fee is hereby granted, provided that the above | |||
8 | * copyright notice and this permission notice appear in all copies. | |||
9 | * | |||
10 | * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES | |||
11 | * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF | |||
12 | * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR | |||
13 | * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES | |||
14 | * WHATSOEVER RESULTING FROM LOSS OF MIND, USE, DATA OR PROFITS, WHETHER | |||
15 | * IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING | |||
16 | * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. | |||
17 | */ | |||
18 | ||||
19 | #include <sys/types.h> | |||
20 | ||||
21 | #include <ctype.h> | |||
22 | #include <errno(*__errno()).h> | |||
23 | #include <fcntl.h> | |||
24 | #include <limits.h> | |||
25 | #include <stdarg.h> | |||
26 | #include <stdio.h> | |||
27 | #include <stdint.h> | |||
28 | #include <stdlib.h> | |||
29 | #include <string.h> | |||
30 | #include <time.h> | |||
31 | #include <unistd.h> | |||
32 | #include <vis.h> | |||
33 | ||||
34 | #include "magic.h" | |||
35 | #include "xmalloc.h" | |||
36 | ||||
37 | static int magic_test_line(struct magic_line *, struct magic_state *); | |||
38 | ||||
39 | static struct magic_line * | |||
40 | magic_get_named(struct magic *m, const char *name) | |||
41 | { | |||
42 | struct magic_line ml; | |||
43 | ||||
44 | ml.name = name; | |||
45 | return (RB_FIND(magic_named_tree, &m->named, &ml)magic_named_tree_RB_FIND(&m->named, &ml)); | |||
46 | } | |||
47 | ||||
48 | static enum magic_type | |||
49 | magic_reverse_type(struct magic_state *ms, enum magic_type type) | |||
50 | { | |||
51 | if (!ms->reverse) | |||
52 | return (type); | |||
53 | switch (type) { | |||
54 | case MAGIC_TYPE_BESHORT: | |||
55 | return (MAGIC_TYPE_LESHORT); | |||
56 | case MAGIC_TYPE_BELONG: | |||
57 | return (MAGIC_TYPE_LELONG); | |||
58 | case MAGIC_TYPE_BEQUAD: | |||
59 | return (MAGIC_TYPE_LEQUAD); | |||
60 | case MAGIC_TYPE_UBESHORT: | |||
61 | return (MAGIC_TYPE_ULESHORT); | |||
62 | case MAGIC_TYPE_UBELONG: | |||
63 | return (MAGIC_TYPE_ULELONG); | |||
64 | case MAGIC_TYPE_UBEQUAD: | |||
65 | return (MAGIC_TYPE_ULEQUAD); | |||
66 | case MAGIC_TYPE_BEFLOAT: | |||
67 | return (MAGIC_TYPE_LEFLOAT); | |||
68 | case MAGIC_TYPE_BEDOUBLE: | |||
69 | return (MAGIC_TYPE_LEDOUBLE); | |||
70 | case MAGIC_TYPE_BEDATE: | |||
71 | return (MAGIC_TYPE_LEDATE); | |||
72 | case MAGIC_TYPE_BEQDATE: | |||
73 | return (MAGIC_TYPE_LEQDATE); | |||
74 | case MAGIC_TYPE_BELDATE: | |||
75 | return (MAGIC_TYPE_LELDATE); | |||
76 | case MAGIC_TYPE_BEQLDATE: | |||
77 | return (MAGIC_TYPE_LEQLDATE); | |||
78 | case MAGIC_TYPE_UBEDATE: | |||
79 | return (MAGIC_TYPE_ULEDATE); | |||
80 | case MAGIC_TYPE_UBEQDATE: | |||
81 | return (MAGIC_TYPE_ULEQDATE); | |||
82 | case MAGIC_TYPE_UBELDATE: | |||
83 | return (MAGIC_TYPE_ULELDATE); | |||
84 | case MAGIC_TYPE_UBEQLDATE: | |||
85 | return (MAGIC_TYPE_ULEQLDATE); | |||
86 | case MAGIC_TYPE_LESHORT: | |||
87 | return (MAGIC_TYPE_BESHORT); | |||
88 | case MAGIC_TYPE_LELONG: | |||
89 | return (MAGIC_TYPE_LELONG); | |||
90 | case MAGIC_TYPE_LEQUAD: | |||
91 | return (MAGIC_TYPE_LEQUAD); | |||
92 | case MAGIC_TYPE_ULESHORT: | |||
93 | return (MAGIC_TYPE_UBESHORT); | |||
94 | case MAGIC_TYPE_ULELONG: | |||
95 | return (MAGIC_TYPE_UBELONG); | |||
96 | case MAGIC_TYPE_ULEQUAD: | |||
97 | return (MAGIC_TYPE_UBEQUAD); | |||
98 | case MAGIC_TYPE_LEFLOAT: | |||
99 | return (MAGIC_TYPE_BEFLOAT); | |||
100 | case MAGIC_TYPE_LEDOUBLE: | |||
101 | return (MAGIC_TYPE_BEDOUBLE); | |||
102 | case MAGIC_TYPE_LEDATE: | |||
103 | return (MAGIC_TYPE_BEDATE); | |||
104 | case MAGIC_TYPE_LEQDATE: | |||
105 | return (MAGIC_TYPE_BEQDATE); | |||
106 | case MAGIC_TYPE_LELDATE: | |||
107 | return (MAGIC_TYPE_BELDATE); | |||
108 | case MAGIC_TYPE_LEQLDATE: | |||
109 | return (MAGIC_TYPE_BEQLDATE); | |||
110 | case MAGIC_TYPE_ULEDATE: | |||
111 | return (MAGIC_TYPE_UBEDATE); | |||
112 | case MAGIC_TYPE_ULEQDATE: | |||
113 | return (MAGIC_TYPE_UBEQDATE); | |||
114 | case MAGIC_TYPE_ULELDATE: | |||
115 | return (MAGIC_TYPE_UBELDATE); | |||
116 | case MAGIC_TYPE_ULEQLDATE: | |||
117 | return (MAGIC_TYPE_UBEQLDATE); | |||
118 | default: | |||
119 | return (type); | |||
120 | } | |||
121 | } | |||
122 | ||||
123 | static int | |||
124 | magic_one_eq(char a, char b, int cflag) | |||
125 | { | |||
126 | if (a == b) | |||
127 | return (1); | |||
128 | if (cflag && islower((u_char)b) && tolower((u_char)a) == (u_char)b) | |||
129 | return (1); | |||
130 | return (0); | |||
131 | } | |||
132 | ||||
133 | static int | |||
134 | magic_test_eq(const char *ap, size_t asize, const char *bp, size_t bsize, | |||
135 | int cflag, int bflag, int Bflag) | |||
136 | { | |||
137 | size_t aoff, boff, aspaces, bspaces; | |||
138 | ||||
139 | aoff = boff = 0; | |||
140 | while (aoff != asize && boff != bsize) { | |||
141 | if (Bflag && isspace((u_char)ap[aoff])) { | |||
142 | aspaces = 0; | |||
143 | while (aoff != asize && isspace((u_char)ap[aoff])) { | |||
144 | aspaces++; | |||
145 | aoff++; | |||
146 | } | |||
147 | bspaces = 0; | |||
148 | while (boff != bsize && isspace((u_char)bp[boff])) { | |||
149 | bspaces++; | |||
150 | boff++; | |||
151 | } | |||
152 | if (bspaces >= aspaces) | |||
153 | continue; | |||
154 | return (1); | |||
155 | } | |||
156 | if (magic_one_eq(ap[aoff], bp[boff], cflag)) { | |||
157 | aoff++; | |||
158 | boff++; | |||
159 | continue; | |||
160 | } | |||
161 | if (bflag && isspace((u_char)bp[boff])) { | |||
162 | boff++; | |||
163 | continue; | |||
164 | } | |||
165 | if (ap[aoff] < bp[boff]) | |||
166 | return (-1); | |||
167 | return (1); | |||
168 | } | |||
169 | return (0); | |||
170 | } | |||
171 | ||||
172 | static int | |||
173 | magic_copy_from(struct magic_state *ms, ssize_t offset, void *dst, size_t size) | |||
174 | { | |||
175 | if (offset < 0) | |||
176 | offset = ms->offset; | |||
177 | if (offset + size > ms->size) | |||
178 | return (-1); | |||
179 | memcpy(dst, ms->base + offset, size); | |||
180 | return (0); | |||
181 | } | |||
182 | ||||
183 | static void | |||
184 | magic_add_result(struct magic_state *ms, struct magic_line *ml, | |||
185 | const char *fmt, ...) | |||
186 | { | |||
187 | va_list ap; | |||
188 | int separate; | |||
189 | char *s, *tmp, *add; | |||
190 | ||||
191 | va_start(ap, fmt)__builtin_va_start(ap, fmt); | |||
192 | if (ml->stringify) { | |||
193 | if (vasprintf(&s, fmt, ap) == -1) { | |||
194 | va_end(ap)__builtin_va_end(ap); | |||
195 | return; | |||
196 | } | |||
197 | va_end(ap)__builtin_va_end(ap); | |||
198 | if (asprintf(&tmp, ml->result, s) == -1) { | |||
199 | free(s); | |||
200 | return; | |||
201 | } | |||
202 | free(s); | |||
203 | } else { | |||
204 | if (vasprintf(&tmp, ml->result, ap) == -1) { | |||
205 | va_end(ap)__builtin_va_end(ap); | |||
206 | return; | |||
207 | } | |||
208 | va_end(ap)__builtin_va_end(ap); | |||
209 | } | |||
210 | ||||
211 | separate = 1; | |||
212 | if (tmp[0] == '\\' && tmp[1] == 'b') { | |||
213 | separate = 0; | |||
214 | add = tmp + 2; | |||
215 | } else | |||
216 | add = tmp; | |||
217 | ||||
218 | if (separate && *ms->out != '\0') | |||
219 | strlcat(ms->out, " ", sizeof ms->out); | |||
220 | strlcat(ms->out, add, sizeof ms->out); | |||
221 | ||||
222 | free(tmp); | |||
223 | } | |||
224 | ||||
225 | static void | |||
226 | magic_add_string(struct magic_state *ms, struct magic_line *ml, | |||
227 | const char *s, size_t slen) | |||
228 | { | |||
229 | char *out; | |||
230 | size_t outlen, offset; | |||
231 | ||||
232 | outlen = MAGIC_STRING_SIZE31; | |||
233 | if (outlen > slen) | |||
234 | outlen = slen; | |||
235 | for (offset = 0; offset < outlen; offset++) { | |||
236 | if (s[offset] == '\0' || !isprint((u_char)s[offset])) { | |||
| ||||
237 | outlen = offset; | |||
238 | break; | |||
239 | } | |||
240 | } | |||
241 | out = xreallocarray(NULL((void *)0), 4, outlen + 1); | |||
242 | strvisx(out, s, outlen, VIS_TAB0x08|VIS_NL0x10|VIS_CSTYLE0x02|VIS_OCTAL0x01); | |||
243 | magic_add_result(ms, ml, "%s", out); | |||
244 | free(out); | |||
245 | } | |||
246 | ||||
247 | static int | |||
248 | magic_test_signed(struct magic_line *ml, int64_t value, int64_t wanted) | |||
249 | { | |||
250 | switch (ml->test_operator) { | |||
251 | case 'x': | |||
252 | return (1); | |||
253 | case '<': | |||
254 | return (value < wanted); | |||
255 | case '[': | |||
256 | return (value <= wanted); | |||
257 | case '>': | |||
258 | return (value > wanted); | |||
259 | case ']': | |||
260 | return (value >= wanted); | |||
261 | case '=': | |||
262 | return (value == wanted); | |||
263 | case '&': | |||
264 | return ((value & wanted) == wanted); | |||
265 | case '^': | |||
266 | return ((~value & wanted) == wanted); | |||
267 | } | |||
268 | return (-1); | |||
269 | } | |||
270 | ||||
271 | static int | |||
272 | magic_test_unsigned(struct magic_line *ml, uint64_t value, uint64_t wanted) | |||
273 | { | |||
274 | switch (ml->test_operator) { | |||
275 | case 'x': | |||
276 | return (1); | |||
277 | case '<': | |||
278 | return (value < wanted); | |||
279 | case '[': | |||
280 | return (value <= wanted); | |||
281 | case '>': | |||
282 | return (value > wanted); | |||
283 | case ']': | |||
284 | return (value >= wanted); | |||
285 | case '=': | |||
286 | return (value == wanted); | |||
287 | case '&': | |||
288 | return ((value & wanted) == wanted); | |||
289 | case '^': | |||
290 | return ((~value & wanted) == wanted); | |||
291 | } | |||
292 | return (-1); | |||
293 | } | |||
294 | ||||
295 | static int | |||
296 | magic_test_double(struct magic_line *ml, double value, double wanted) | |||
297 | { | |||
298 | switch (ml->test_operator) { | |||
299 | case 'x': | |||
300 | return (1); | |||
301 | case '=': | |||
302 | return (value == wanted); | |||
303 | } | |||
304 | return (-1); | |||
305 | } | |||
306 | ||||
307 | static int | |||
308 | magic_test_type_none(__unused__attribute__((__unused__)) struct magic_line *ml, | |||
309 | __unused__attribute__((__unused__)) struct magic_state *ms) | |||
310 | { | |||
311 | return (0); | |||
312 | } | |||
313 | ||||
314 | static int | |||
315 | magic_test_type_byte(struct magic_line *ml, struct magic_state *ms) | |||
316 | { | |||
317 | int8_t value; | |||
318 | int result; | |||
319 | ||||
320 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
321 | return (0); | |||
322 | ||||
323 | if (ml->type_operator == '&') | |||
324 | value &= (int8_t)ml->type_operand; | |||
325 | else if (ml->type_operator == '-') | |||
326 | value -= (int8_t)ml->type_operand; | |||
327 | else if (ml->type_operator == '+') | |||
328 | value += (int8_t)ml->type_operand; | |||
329 | else if (ml->type_operator == '/') | |||
330 | value /= (int8_t)ml->type_operand; | |||
331 | else if (ml->type_operator == '%') | |||
332 | value %= (int8_t)ml->type_operand; | |||
333 | else if (ml->type_operator == '*') | |||
334 | value *= (int8_t)ml->type_operand; | |||
335 | else if (ml->type_operator != ' ') | |||
336 | return (-1); | |||
337 | ||||
338 | result = magic_test_signed(ml, value, (int8_t)ml->test_signed); | |||
339 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
340 | magic_add_result(ms, ml, "%c", (int)value); | |||
341 | ms->offset += sizeof value; | |||
342 | } | |||
343 | return (result); | |||
344 | } | |||
345 | ||||
346 | static int | |||
347 | magic_test_type_short(struct magic_line *ml, struct magic_state *ms) | |||
348 | { | |||
349 | int16_t value; | |||
350 | int result; | |||
351 | ||||
352 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
353 | return (0); | |||
354 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_BESHORT)) | |||
355 | value = be16toh(value)(__uint16_t)(__builtin_constant_p(value) ? (__uint16_t)(((__uint16_t )(value) & 0xffU) << 8 | ((__uint16_t)(value) & 0xff00U) >> 8) : __swap16md(value)); | |||
356 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_LESHORT)) | |||
357 | value = le16toh(value)((__uint16_t)(value)); | |||
358 | ||||
359 | if (ml->type_operator == '&') | |||
360 | value &= (int16_t)ml->type_operand; | |||
361 | else if (ml->type_operator == '-') | |||
362 | value -= (int16_t)ml->type_operand; | |||
363 | else if (ml->type_operator == '+') | |||
364 | value += (int16_t)ml->type_operand; | |||
365 | else if (ml->type_operator == '/') | |||
366 | value /= (int16_t)ml->type_operand; | |||
367 | else if (ml->type_operator == '%') | |||
368 | value %= (int16_t)ml->type_operand; | |||
369 | else if (ml->type_operator == '*') | |||
370 | value *= (int16_t)ml->type_operand; | |||
371 | else if (ml->type_operator != ' ') | |||
372 | return (-1); | |||
373 | ||||
374 | result = magic_test_signed(ml, value, (int16_t)ml->test_signed); | |||
375 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
376 | magic_add_result(ms, ml, "%hd", (int)value); | |||
377 | ms->offset += sizeof value; | |||
378 | } | |||
379 | return (result); | |||
380 | } | |||
381 | ||||
382 | static int | |||
383 | magic_test_type_long(struct magic_line *ml, struct magic_state *ms) | |||
384 | { | |||
385 | int32_t value; | |||
386 | int result; | |||
387 | ||||
388 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
389 | return (0); | |||
390 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_BELONG)) | |||
391 | value = be32toh(value)(__uint32_t)(__builtin_constant_p(value) ? (__uint32_t)(((__uint32_t )(value) & 0xff) << 24 | ((__uint32_t)(value) & 0xff00) << 8 | ((__uint32_t)(value) & 0xff0000) >> 8 | ((__uint32_t)(value) & 0xff000000) >> 24) : __swap32md (value)); | |||
392 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_LELONG)) | |||
393 | value = le32toh(value)((__uint32_t)(value)); | |||
394 | ||||
395 | if (ml->type_operator == '&') | |||
396 | value &= (int32_t)ml->type_operand; | |||
397 | else if (ml->type_operator == '-') | |||
398 | value -= (int32_t)ml->type_operand; | |||
399 | else if (ml->type_operator == '+') | |||
400 | value += (int32_t)ml->type_operand; | |||
401 | else if (ml->type_operator == '/') | |||
402 | value /= (int32_t)ml->type_operand; | |||
403 | else if (ml->type_operator == '%') | |||
404 | value %= (int32_t)ml->type_operand; | |||
405 | else if (ml->type_operator == '*') | |||
406 | value *= (int32_t)ml->type_operand; | |||
407 | else if (ml->type_operator != ' ') | |||
408 | return (-1); | |||
409 | ||||
410 | result = magic_test_signed(ml, value, (int32_t)ml->test_signed); | |||
411 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
412 | magic_add_result(ms, ml, "%d", (int)value); | |||
413 | ms->offset += sizeof value; | |||
414 | } | |||
415 | return (result); | |||
416 | } | |||
417 | ||||
418 | static int | |||
419 | magic_test_type_quad(struct magic_line *ml, struct magic_state *ms) | |||
420 | { | |||
421 | int64_t value; | |||
422 | int result; | |||
423 | ||||
424 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
425 | return (0); | |||
426 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_BEQUAD)) | |||
427 | value = be64toh(value)(__uint64_t)(__builtin_constant_p(value) ? (__uint64_t)((((__uint64_t )(value) & 0xff) << 56) | ((__uint64_t)(value) & 0xff00ULL) << 40 | ((__uint64_t)(value) & 0xff0000ULL ) << 24 | ((__uint64_t)(value) & 0xff000000ULL) << 8 | ((__uint64_t)(value) & 0xff00000000ULL) >> 8 | ((__uint64_t)(value) & 0xff0000000000ULL) >> 24 | ( (__uint64_t)(value) & 0xff000000000000ULL) >> 40 | ( (__uint64_t)(value) & 0xff00000000000000ULL) >> 56) : __swap64md(value)); | |||
428 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_LEQUAD)) | |||
429 | value = le64toh(value)((__uint64_t)(value)); | |||
430 | ||||
431 | if (ml->type_operator == '&') | |||
432 | value &= (int64_t)ml->type_operand; | |||
433 | else if (ml->type_operator == '-') | |||
434 | value -= (int64_t)ml->type_operand; | |||
435 | else if (ml->type_operator == '+') | |||
436 | value += (int64_t)ml->type_operand; | |||
437 | else if (ml->type_operator == '/') | |||
438 | value /= (int64_t)ml->type_operand; | |||
439 | else if (ml->type_operator == '%') | |||
440 | value %= (int64_t)ml->type_operand; | |||
441 | else if (ml->type_operator == '*') | |||
442 | value *= (int64_t)ml->type_operand; | |||
443 | else if (ml->type_operator != ' ') | |||
444 | return (-1); | |||
445 | ||||
446 | result = magic_test_signed(ml, value, (int64_t)ml->test_signed); | |||
447 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
448 | magic_add_result(ms, ml, "%lld", (long long)value); | |||
449 | ms->offset += sizeof value; | |||
450 | } | |||
451 | return (result); | |||
452 | } | |||
453 | ||||
454 | static int | |||
455 | magic_test_type_ubyte(struct magic_line *ml, struct magic_state *ms) | |||
456 | { | |||
457 | uint8_t value; | |||
458 | int result; | |||
459 | ||||
460 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
461 | return (0); | |||
462 | ||||
463 | if (ml->type_operator == '&') | |||
464 | value &= (uint8_t)ml->type_operand; | |||
465 | else if (ml->type_operator == '-') | |||
466 | value -= (uint8_t)ml->type_operand; | |||
467 | else if (ml->type_operator == '+') | |||
468 | value += (uint8_t)ml->type_operand; | |||
469 | else if (ml->type_operator == '/') | |||
470 | value /= (uint8_t)ml->type_operand; | |||
471 | else if (ml->type_operator == '%') | |||
472 | value %= (uint8_t)ml->type_operand; | |||
473 | else if (ml->type_operator == '*') | |||
474 | value *= (uint8_t)ml->type_operand; | |||
475 | else if (ml->type_operator != ' ') | |||
476 | return (-1); | |||
477 | ||||
478 | result = magic_test_unsigned(ml, value, (uint8_t)ml->test_unsigned); | |||
479 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
480 | magic_add_result(ms, ml, "%c", (unsigned int)value); | |||
481 | ms->offset += sizeof value; | |||
482 | } | |||
483 | return (result); | |||
484 | } | |||
485 | ||||
486 | static int | |||
487 | magic_test_type_ushort(struct magic_line *ml, struct magic_state *ms) | |||
488 | { | |||
489 | uint16_t value; | |||
490 | int result; | |||
491 | ||||
492 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
493 | return (0); | |||
494 | if (ml->type == MAGIC_TYPE_UBESHORT) | |||
495 | value = be16toh(value)(__uint16_t)(__builtin_constant_p(value) ? (__uint16_t)(((__uint16_t )(value) & 0xffU) << 8 | ((__uint16_t)(value) & 0xff00U) >> 8) : __swap16md(value)); | |||
496 | if (ml->type == MAGIC_TYPE_ULESHORT) | |||
497 | value = le16toh(value)((__uint16_t)(value)); | |||
498 | ||||
499 | if (ml->type_operator == '&') | |||
500 | value &= (uint16_t)ml->type_operand; | |||
501 | else if (ml->type_operator == '-') | |||
502 | value -= (uint16_t)ml->type_operand; | |||
503 | else if (ml->type_operator == '+') | |||
504 | value += (uint16_t)ml->type_operand; | |||
505 | else if (ml->type_operator == '/') | |||
506 | value /= (uint16_t)ml->type_operand; | |||
507 | else if (ml->type_operator == '%') | |||
508 | value %= (uint16_t)ml->type_operand; | |||
509 | else if (ml->type_operator == '*') | |||
510 | value *= (uint16_t)ml->type_operand; | |||
511 | else if (ml->type_operator != ' ') | |||
512 | return (-1); | |||
513 | ||||
514 | result = magic_test_unsigned(ml, value, (uint16_t)ml->test_unsigned); | |||
515 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
516 | magic_add_result(ms, ml, "%hu", (unsigned int)value); | |||
517 | ms->offset += sizeof value; | |||
518 | } | |||
519 | return (result); | |||
520 | } | |||
521 | ||||
522 | static int | |||
523 | magic_test_type_ulong(struct magic_line *ml, struct magic_state *ms) | |||
524 | { | |||
525 | uint32_t value; | |||
526 | int result; | |||
527 | ||||
528 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
529 | return (0); | |||
530 | if (ml->type == MAGIC_TYPE_UBELONG) | |||
531 | value = be32toh(value)(__uint32_t)(__builtin_constant_p(value) ? (__uint32_t)(((__uint32_t )(value) & 0xff) << 24 | ((__uint32_t)(value) & 0xff00) << 8 | ((__uint32_t)(value) & 0xff0000) >> 8 | ((__uint32_t)(value) & 0xff000000) >> 24) : __swap32md (value)); | |||
532 | if (ml->type == MAGIC_TYPE_ULELONG) | |||
533 | value = le32toh(value)((__uint32_t)(value)); | |||
534 | ||||
535 | if (ml->type_operator == '&') | |||
536 | value &= (uint32_t)ml->type_operand; | |||
537 | else if (ml->type_operator == '-') | |||
538 | value -= (uint32_t)ml->type_operand; | |||
539 | else if (ml->type_operator == '+') | |||
540 | value += (uint32_t)ml->type_operand; | |||
541 | else if (ml->type_operator == '/') | |||
542 | value /= (uint32_t)ml->type_operand; | |||
543 | else if (ml->type_operator == '%') | |||
544 | value %= (uint32_t)ml->type_operand; | |||
545 | else if (ml->type_operator == '*') | |||
546 | value *= (uint32_t)ml->type_operand; | |||
547 | else if (ml->type_operator != ' ') | |||
548 | return (-1); | |||
549 | ||||
550 | result = magic_test_unsigned(ml, value, (uint32_t)ml->test_unsigned); | |||
551 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
552 | magic_add_result(ms, ml, "%u", (unsigned int)value); | |||
553 | ms->offset += sizeof value; | |||
554 | } | |||
555 | return (result); | |||
556 | } | |||
557 | ||||
558 | static int | |||
559 | magic_test_type_uquad(struct magic_line *ml, struct magic_state *ms) | |||
560 | { | |||
561 | uint64_t value; | |||
562 | int result; | |||
563 | ||||
564 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
565 | return (0); | |||
566 | if (ml->type == MAGIC_TYPE_UBEQUAD) | |||
567 | value = be64toh(value)(__uint64_t)(__builtin_constant_p(value) ? (__uint64_t)((((__uint64_t )(value) & 0xff) << 56) | ((__uint64_t)(value) & 0xff00ULL) << 40 | ((__uint64_t)(value) & 0xff0000ULL ) << 24 | ((__uint64_t)(value) & 0xff000000ULL) << 8 | ((__uint64_t)(value) & 0xff00000000ULL) >> 8 | ((__uint64_t)(value) & 0xff0000000000ULL) >> 24 | ( (__uint64_t)(value) & 0xff000000000000ULL) >> 40 | ( (__uint64_t)(value) & 0xff00000000000000ULL) >> 56) : __swap64md(value)); | |||
568 | if (ml->type == MAGIC_TYPE_ULEQUAD) | |||
569 | value = le64toh(value)((__uint64_t)(value)); | |||
570 | ||||
571 | if (ml->type_operator == '&') | |||
572 | value &= (uint64_t)ml->type_operand; | |||
573 | else if (ml->type_operator == '-') | |||
574 | value -= (uint64_t)ml->type_operand; | |||
575 | else if (ml->type_operator == '+') | |||
576 | value += (uint64_t)ml->type_operand; | |||
577 | else if (ml->type_operator == '/') | |||
578 | value /= (uint64_t)ml->type_operand; | |||
579 | else if (ml->type_operator == '%') | |||
580 | value %= (uint64_t)ml->type_operand; | |||
581 | else if (ml->type_operator == '*') | |||
582 | value *= (uint64_t)ml->type_operand; | |||
583 | else if (ml->type_operator != ' ') | |||
584 | return (-1); | |||
585 | ||||
586 | result = magic_test_unsigned(ml, value, (uint64_t)ml->test_unsigned); | |||
587 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
588 | magic_add_result(ms, ml, "%llu", (unsigned long long)value); | |||
589 | ms->offset += sizeof value; | |||
590 | } | |||
591 | return (result); | |||
592 | } | |||
593 | ||||
594 | static int | |||
595 | magic_test_type_float(struct magic_line *ml, struct magic_state *ms) | |||
596 | { | |||
597 | uint32_t value0; | |||
598 | float value; | |||
599 | int result; | |||
600 | ||||
601 | if (magic_copy_from(ms, -1, &value0, sizeof value0) != 0) | |||
602 | return (0); | |||
603 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_BEFLOAT)) | |||
604 | value0 = be32toh(value0)(__uint32_t)(__builtin_constant_p(value0) ? (__uint32_t)(((__uint32_t )(value0) & 0xff) << 24 | ((__uint32_t)(value0) & 0xff00) << 8 | ((__uint32_t)(value0) & 0xff0000) >> 8 | ((__uint32_t)(value0) & 0xff000000) >> 24) : __swap32md (value0)); | |||
605 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_LEFLOAT)) | |||
606 | value0 = le32toh(value0)((__uint32_t)(value0)); | |||
607 | memcpy(&value, &value0, sizeof value); | |||
608 | ||||
609 | if (ml->type_operator != ' ') | |||
610 | return (-1); | |||
611 | ||||
612 | result = magic_test_double(ml, value, (float)ml->test_double); | |||
613 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
614 | magic_add_result(ms, ml, "%g", value); | |||
615 | ms->offset += sizeof value0; | |||
616 | } | |||
617 | return (1); | |||
618 | } | |||
619 | ||||
620 | static int | |||
621 | magic_test_type_double(struct magic_line *ml, struct magic_state *ms) | |||
622 | { | |||
623 | uint64_t value0; | |||
624 | double value; | |||
625 | int result; | |||
626 | ||||
627 | if (magic_copy_from(ms, -1, &value0, sizeof value0) != 0) | |||
628 | return (0); | |||
629 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_BEDOUBLE)) | |||
630 | value0 = be64toh(value0)(__uint64_t)(__builtin_constant_p(value0) ? (__uint64_t)((((__uint64_t )(value0) & 0xff) << 56) | ((__uint64_t)(value0) & 0xff00ULL) << 40 | ((__uint64_t)(value0) & 0xff0000ULL ) << 24 | ((__uint64_t)(value0) & 0xff000000ULL) << 8 | ((__uint64_t)(value0) & 0xff00000000ULL) >> 8 | ((__uint64_t)(value0) & 0xff0000000000ULL) >> 24 | ((__uint64_t)(value0) & 0xff000000000000ULL) >> 40 | ((__uint64_t)(value0) & 0xff00000000000000ULL) >> 56) : __swap64md(value0)); | |||
631 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_LEDOUBLE)) | |||
632 | value0 = le64toh(value0)((__uint64_t)(value0)); | |||
633 | memcpy(&value, &value0, sizeof value); | |||
634 | ||||
635 | if (ml->type_operator != ' ') | |||
636 | return (-1); | |||
637 | ||||
638 | result = magic_test_double(ml, value, (double)ml->test_double); | |||
639 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
640 | magic_add_result(ms, ml, "%g", value); | |||
641 | ms->offset += sizeof value0; | |||
642 | } | |||
643 | return (1); | |||
644 | } | |||
645 | ||||
646 | static int | |||
647 | magic_test_type_string(struct magic_line *ml, struct magic_state *ms) | |||
648 | { | |||
649 | const char *s, *cp; | |||
650 | size_t slen; | |||
651 | int result, cflag = 0, bflag = 0, Bflag = 0; | |||
652 | ||||
653 | cp = &ml->type_string[(sizeof "string") - 1]; | |||
654 | if (*cp != '\0') { | |||
655 | if (*cp != '/') | |||
656 | return (-1); | |||
657 | cp++; | |||
658 | for (; *cp != '\0'; cp++) { | |||
659 | switch (*cp) { | |||
660 | case 'B': | |||
661 | case 'W': | |||
662 | Bflag = 1; | |||
663 | break; | |||
664 | case 'b': | |||
665 | case 'w': | |||
666 | bflag = 1; | |||
667 | break; | |||
668 | case 'c': | |||
669 | cflag = 1; | |||
670 | break; | |||
671 | case 't': | |||
672 | break; | |||
673 | default: | |||
674 | return (-1); | |||
675 | } | |||
676 | } | |||
677 | } | |||
678 | ||||
679 | s = ms->base + ms->offset; | |||
680 | slen = ms->size - ms->offset; | |||
681 | if (slen < ml->test_string_size) | |||
682 | return (0); | |||
683 | ||||
684 | result = magic_test_eq(s, slen, ml->test_string, ml->test_string_size, | |||
685 | cflag, bflag, Bflag); | |||
686 | switch (ml->test_operator) { | |||
687 | case 'x': | |||
688 | result = 1; | |||
689 | break; | |||
690 | case '<': | |||
691 | result = result < 0; | |||
692 | break; | |||
693 | case '>': | |||
694 | result = result > 0; | |||
695 | break; | |||
696 | case '=': | |||
697 | slen = ml->test_string_size; /* only print what was found */ | |||
698 | result = result == 0; | |||
699 | break; | |||
700 | default: | |||
701 | result = -1; | |||
702 | break; | |||
703 | } | |||
704 | if (result == !ml->test_not) { | |||
705 | if (ml->result != NULL((void *)0)) | |||
706 | magic_add_string(ms, ml, s, slen); | |||
707 | if (result && ml->test_operator == '=') | |||
708 | ms->offset = s - ms->base + ml->test_string_size; | |||
709 | } | |||
710 | return (result); | |||
711 | } | |||
712 | ||||
713 | static int | |||
714 | magic_test_type_pstring(struct magic_line *ml, struct magic_state *ms) | |||
715 | { | |||
716 | const char *s, *cp; | |||
717 | size_t slen; | |||
718 | int result; | |||
719 | ||||
720 | cp = &ml->type_string[(sizeof "pstring") - 1]; | |||
721 | if (*cp != '\0') { | |||
722 | if (*cp != '/') | |||
723 | return (-1); | |||
724 | cp++; | |||
725 | for (; *cp != '\0'; cp++) { | |||
726 | switch (*cp) { | |||
727 | default: | |||
728 | return (-1); | |||
729 | } | |||
730 | } | |||
731 | } | |||
732 | ||||
733 | s = ms->base + ms->offset; | |||
734 | if (ms->size - ms->offset < 1) | |||
735 | return (-1); | |||
736 | slen = *(u_char *)s; | |||
737 | if (slen + 1 > ms->size - ms->offset) | |||
738 | return (-1); | |||
739 | s++; | |||
740 | ||||
741 | if (slen < ml->test_string_size) | |||
742 | result = -1; | |||
743 | else if (slen > ml->test_string_size) | |||
744 | result = 1; | |||
745 | else | |||
746 | result = memcmp(s, ml->test_string, ml->test_string_size); | |||
747 | switch (ml->test_operator) { | |||
748 | case 'x': | |||
749 | result = 1; | |||
750 | break; | |||
751 | case '<': | |||
752 | result = result < 0; | |||
753 | break; | |||
754 | case '>': | |||
755 | result = result > 0; | |||
756 | break; | |||
757 | case '=': | |||
758 | result = result == 0; | |||
759 | break; | |||
760 | default: | |||
761 | result = -1; | |||
762 | break; | |||
763 | } | |||
764 | if (result == !ml->test_not) { | |||
765 | if (ml->result != NULL((void *)0)) | |||
766 | magic_add_string(ms, ml, s, slen); | |||
767 | if (result && ml->test_operator == '=') | |||
768 | ms->offset += slen + 1; | |||
769 | } | |||
770 | return (result); | |||
771 | } | |||
772 | ||||
773 | static int | |||
774 | magic_test_type_date(struct magic_line *ml, struct magic_state *ms) | |||
775 | { | |||
776 | int32_t value; | |||
777 | int result; | |||
778 | time_t t; | |||
779 | char s[64]; | |||
780 | ||||
781 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
782 | return (0); | |||
783 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_BEDATE) || | |||
784 | ml->type == magic_reverse_type(ms, MAGIC_TYPE_BELDATE)) | |||
785 | value = be32toh(value)(__uint32_t)(__builtin_constant_p(value) ? (__uint32_t)(((__uint32_t )(value) & 0xff) << 24 | ((__uint32_t)(value) & 0xff00) << 8 | ((__uint32_t)(value) & 0xff0000) >> 8 | ((__uint32_t)(value) & 0xff000000) >> 24) : __swap32md (value)); | |||
786 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_LEDATE) || | |||
787 | ml->type == magic_reverse_type(ms, MAGIC_TYPE_LELDATE)) | |||
788 | value = le32toh(value)((__uint32_t)(value)); | |||
789 | ||||
790 | if (ml->type_operator == '&') | |||
791 | value &= (int32_t)ml->type_operand; | |||
792 | else if (ml->type_operator == '-') | |||
793 | value -= (int32_t)ml->type_operand; | |||
794 | else if (ml->type_operator == '+') | |||
795 | value += (int32_t)ml->type_operand; | |||
796 | else if (ml->type_operator != ' ') | |||
797 | return (-1); | |||
798 | ||||
799 | result = magic_test_signed(ml, value, (int32_t)ml->test_signed); | |||
800 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
801 | t = value; | |||
802 | switch (ml->type) { | |||
803 | case MAGIC_TYPE_LDATE: | |||
804 | case MAGIC_TYPE_LELDATE: | |||
805 | case MAGIC_TYPE_BELDATE: | |||
806 | ctime_r(&t, s); | |||
807 | break; | |||
808 | default: | |||
809 | asctime_r(gmtime(&t), s); | |||
810 | break; | |||
811 | } | |||
812 | s[strcspn(s, "\n")] = '\0'; | |||
813 | magic_add_result(ms, ml, "%s", s); | |||
814 | ms->offset += sizeof value; | |||
815 | } | |||
816 | return (result); | |||
817 | } | |||
818 | ||||
819 | static int | |||
820 | magic_test_type_qdate(struct magic_line *ml, struct magic_state *ms) | |||
821 | { | |||
822 | int64_t value; | |||
823 | int result; | |||
824 | time_t t; | |||
825 | char s[64]; | |||
826 | ||||
827 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
828 | return (0); | |||
829 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_BEQDATE) || | |||
830 | ml->type == magic_reverse_type(ms, MAGIC_TYPE_BEQLDATE)) | |||
831 | value = be64toh(value)(__uint64_t)(__builtin_constant_p(value) ? (__uint64_t)((((__uint64_t )(value) & 0xff) << 56) | ((__uint64_t)(value) & 0xff00ULL) << 40 | ((__uint64_t)(value) & 0xff0000ULL ) << 24 | ((__uint64_t)(value) & 0xff000000ULL) << 8 | ((__uint64_t)(value) & 0xff00000000ULL) >> 8 | ((__uint64_t)(value) & 0xff0000000000ULL) >> 24 | ( (__uint64_t)(value) & 0xff000000000000ULL) >> 40 | ( (__uint64_t)(value) & 0xff00000000000000ULL) >> 56) : __swap64md(value)); | |||
832 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_LEQDATE) || | |||
833 | ml->type == magic_reverse_type(ms, MAGIC_TYPE_LEQLDATE)) | |||
834 | value = le64toh(value)((__uint64_t)(value)); | |||
835 | ||||
836 | if (ml->type_operator == '&') | |||
837 | value &= (int64_t)ml->type_operand; | |||
838 | else if (ml->type_operator == '-') | |||
839 | value -= (int64_t)ml->type_operand; | |||
840 | else if (ml->type_operator == '+') | |||
841 | value += (int64_t)ml->type_operand; | |||
842 | else if (ml->type_operator != ' ') | |||
843 | return (-1); | |||
844 | ||||
845 | result = magic_test_signed(ml, value, (int64_t)ml->test_signed); | |||
846 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
847 | t = value; | |||
848 | switch (ml->type) { | |||
849 | case MAGIC_TYPE_QLDATE: | |||
850 | case MAGIC_TYPE_LEQLDATE: | |||
851 | case MAGIC_TYPE_BEQLDATE: | |||
852 | ctime_r(&t, s); | |||
853 | break; | |||
854 | default: | |||
855 | asctime_r(gmtime(&t), s); | |||
856 | break; | |||
857 | } | |||
858 | s[strcspn(s, "\n")] = '\0'; | |||
859 | magic_add_result(ms, ml, "%s", s); | |||
860 | ms->offset += sizeof value; | |||
861 | } | |||
862 | return (result); | |||
863 | } | |||
864 | ||||
865 | static int | |||
866 | magic_test_type_udate(struct magic_line *ml, struct magic_state *ms) | |||
867 | { | |||
868 | uint32_t value; | |||
869 | int result; | |||
870 | time_t t; | |||
871 | char s[64]; | |||
872 | ||||
873 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
874 | return (0); | |||
875 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_BEDATE) || | |||
876 | ml->type == magic_reverse_type(ms, MAGIC_TYPE_BELDATE)) | |||
877 | value = be32toh(value)(__uint32_t)(__builtin_constant_p(value) ? (__uint32_t)(((__uint32_t )(value) & 0xff) << 24 | ((__uint32_t)(value) & 0xff00) << 8 | ((__uint32_t)(value) & 0xff0000) >> 8 | ((__uint32_t)(value) & 0xff000000) >> 24) : __swap32md (value)); | |||
878 | if (ml->type == magic_reverse_type(ms, MAGIC_TYPE_LEDATE) || | |||
879 | ml->type == magic_reverse_type(ms, MAGIC_TYPE_LELDATE)) | |||
880 | value = le32toh(value)((__uint32_t)(value)); | |||
881 | ||||
882 | if (ml->type_operator == '&') | |||
883 | value &= (uint32_t)ml->type_operand; | |||
884 | else if (ml->type_operator == '-') | |||
885 | value -= (uint32_t)ml->type_operand; | |||
886 | else if (ml->type_operator == '+') | |||
887 | value += (uint32_t)ml->type_operand; | |||
888 | else if (ml->type_operator != ' ') | |||
889 | return (-1); | |||
890 | ||||
891 | result = magic_test_unsigned(ml, value, (uint32_t)ml->test_unsigned); | |||
892 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
893 | t = value; | |||
894 | switch (ml->type) { | |||
895 | case MAGIC_TYPE_LDATE: | |||
896 | case MAGIC_TYPE_LELDATE: | |||
897 | case MAGIC_TYPE_BELDATE: | |||
898 | ctime_r(&t, s); | |||
899 | break; | |||
900 | default: | |||
901 | asctime_r(gmtime(&t), s); | |||
902 | break; | |||
903 | } | |||
904 | s[strcspn(s, "\n")] = '\0'; | |||
905 | magic_add_result(ms, ml, "%s", s); | |||
906 | ms->offset += sizeof value; | |||
907 | } | |||
908 | return (result); | |||
909 | } | |||
910 | ||||
911 | static int | |||
912 | magic_test_type_uqdate(struct magic_line *ml, struct magic_state *ms) | |||
913 | { | |||
914 | uint64_t value; | |||
915 | int result; | |||
916 | time_t t; | |||
917 | char s[64]; | |||
918 | ||||
919 | if (magic_copy_from(ms, -1, &value, sizeof value) != 0) | |||
920 | return (0); | |||
921 | if (ml->type == MAGIC_TYPE_UBEQDATE || | |||
922 | ml->type == MAGIC_TYPE_UBEQLDATE) | |||
923 | value = be64toh(value)(__uint64_t)(__builtin_constant_p(value) ? (__uint64_t)((((__uint64_t )(value) & 0xff) << 56) | ((__uint64_t)(value) & 0xff00ULL) << 40 | ((__uint64_t)(value) & 0xff0000ULL ) << 24 | ((__uint64_t)(value) & 0xff000000ULL) << 8 | ((__uint64_t)(value) & 0xff00000000ULL) >> 8 | ((__uint64_t)(value) & 0xff0000000000ULL) >> 24 | ( (__uint64_t)(value) & 0xff000000000000ULL) >> 40 | ( (__uint64_t)(value) & 0xff00000000000000ULL) >> 56) : __swap64md(value)); | |||
924 | if (ml->type == MAGIC_TYPE_ULEQDATE || | |||
925 | ml->type == MAGIC_TYPE_ULEQLDATE) | |||
926 | value = le64toh(value)((__uint64_t)(value)); | |||
927 | ||||
928 | if (ml->type_operator == '&') | |||
929 | value &= (uint64_t)ml->type_operand; | |||
930 | else if (ml->type_operator == '-') | |||
931 | value -= (uint64_t)ml->type_operand; | |||
932 | else if (ml->type_operator == '+') | |||
933 | value += (uint64_t)ml->type_operand; | |||
934 | else if (ml->type_operator != ' ') | |||
935 | return (-1); | |||
936 | ||||
937 | result = magic_test_unsigned(ml, value, (uint64_t)ml->test_unsigned); | |||
938 | if (result == !ml->test_not && ml->result != NULL((void *)0)) { | |||
939 | t = value; | |||
940 | switch (ml->type) { | |||
941 | case MAGIC_TYPE_UQLDATE: | |||
942 | case MAGIC_TYPE_ULEQLDATE: | |||
943 | case MAGIC_TYPE_UBEQLDATE: | |||
944 | ctime_r(&t, s); | |||
945 | break; | |||
946 | default: | |||
947 | asctime_r(gmtime(&t), s); | |||
948 | break; | |||
949 | } | |||
950 | s[strcspn(s, "\n")] = '\0'; | |||
951 | magic_add_result(ms, ml, "%s", s); | |||
952 | ms->offset += sizeof value; | |||
953 | } | |||
954 | return (result); | |||
955 | } | |||
956 | ||||
957 | static int | |||
958 | magic_test_type_bestring16(__unused__attribute__((__unused__)) struct magic_line *ml, | |||
959 | __unused__attribute__((__unused__)) struct magic_state *ms) | |||
960 | { | |||
961 | return (-2); | |||
962 | } | |||
963 | ||||
964 | static int | |||
965 | magic_test_type_lestring16(__unused__attribute__((__unused__)) struct magic_line *ml, | |||
966 | __unused__attribute__((__unused__)) struct magic_state *ms) | |||
967 | { | |||
968 | return (-2); | |||
969 | } | |||
970 | ||||
971 | static int | |||
972 | magic_test_type_melong(__unused__attribute__((__unused__)) struct magic_line *ml, | |||
973 | __unused__attribute__((__unused__)) struct magic_state *ms) | |||
974 | { | |||
975 | return (-2); | |||
976 | } | |||
977 | ||||
978 | static int | |||
979 | magic_test_type_medate(__unused__attribute__((__unused__)) struct magic_line *ml, | |||
980 | __unused__attribute__((__unused__)) struct magic_state *ms) | |||
981 | { | |||
982 | return (-2); | |||
983 | } | |||
984 | ||||
985 | static int | |||
986 | magic_test_type_meldate(__unused__attribute__((__unused__)) struct magic_line *ml, | |||
987 | __unused__attribute__((__unused__)) struct magic_state *ms) | |||
988 | { | |||
989 | return (-2); | |||
990 | } | |||
991 | ||||
992 | static int | |||
993 | magic_test_type_regex(struct magic_line *ml, struct magic_state *ms) | |||
994 | { | |||
995 | const char *cp; | |||
996 | regex_t re; | |||
997 | regmatch_t m; | |||
998 | int result, flags = 0, sflag = 0; | |||
999 | ||||
1000 | cp = &ml->type_string[(sizeof "regex") - 1]; | |||
1001 | if (*cp != '\0') { | |||
1002 | if (*cp != '/') | |||
1003 | return (-1); | |||
1004 | cp++; | |||
1005 | for (; *cp != '\0'; cp++) { | |||
1006 | switch (*cp) { | |||
1007 | case 's': | |||
1008 | sflag = 1; | |||
1009 | break; | |||
1010 | case 'c': | |||
1011 | flags |= REG_ICASE0002; | |||
1012 | break; | |||
1013 | default: | |||
1014 | return (-1); | |||
1015 | } | |||
1016 | } | |||
1017 | } | |||
1018 | ||||
1019 | if (regcomp(&re, ml->test_string, REG_EXTENDED0001|REG_NEWLINE0010|flags) != 0) | |||
1020 | return (-1); | |||
1021 | m.rm_so = ms->offset; | |||
1022 | m.rm_eo = ms->size; | |||
1023 | ||||
1024 | result = (regexec(&re, ms->base, 1, &m, REG_STARTEND00004) == 0); | |||
1025 | if (result == !ml->test_not) { | |||
1026 | if (ml->result != NULL((void *)0)) { | |||
1027 | magic_add_string(ms, ml, ms->base + m.rm_so, | |||
1028 | m.rm_eo - m.rm_so); | |||
1029 | } | |||
1030 | if (result) { | |||
1031 | if (sflag) | |||
1032 | ms->offset = m.rm_so; | |||
1033 | else | |||
1034 | ms->offset = m.rm_eo; | |||
1035 | } | |||
1036 | } | |||
1037 | regfree(&re); | |||
1038 | return (result); | |||
1039 | } | |||
1040 | ||||
1041 | static int | |||
1042 | magic_test_type_search(struct magic_line *ml, struct magic_state *ms) | |||
1043 | { | |||
1044 | const char *cp, *endptr, *start, *found; | |||
1045 | size_t size, end, i; | |||
1046 | uint64_t range; | |||
1047 | int result, n, cflag = 0, bflag = 0, Bflag = 0; | |||
1048 | ||||
1049 | cp = &ml->type_string[(sizeof "search") - 1]; | |||
1050 | if (*cp != '\0') { | |||
| ||||
1051 | if (*cp != '/') | |||
1052 | return (-1); | |||
1053 | cp++; | |||
1054 | ||||
1055 | endptr = magic_strtoull(cp, &range); | |||
1056 | if (endptr == NULL((void *)0) || (*endptr != '/' && *endptr != '\0')) | |||
1057 | return (-1); | |||
1058 | ||||
1059 | if (*endptr == '/') { | |||
1060 | for (cp = endptr + 1; *cp != '\0'; cp++) { | |||
1061 | switch (*cp) { | |||
1062 | case 'B': | |||
1063 | case 'W': | |||
1064 | Bflag = 1; | |||
1065 | break; | |||
1066 | case 'b': | |||
1067 | case 'w': | |||
1068 | bflag = 1; | |||
1069 | break; | |||
1070 | case 'c': | |||
1071 | cflag = 1; | |||
1072 | break; | |||
1073 | case 't': | |||
1074 | break; | |||
1075 | default: | |||
1076 | return (-1); | |||
1077 | } | |||
1078 | } | |||
1079 | } | |||
1080 | } else | |||
1081 | range = UINT64_MAX0xffffffffffffffffULL; | |||
1082 | if (range > (uint64_t)ms->size - ms->offset) | |||
1083 | range = ms->size - ms->offset; | |||
1084 | size = ml->test_string_size; | |||
1085 | ||||
1086 | /* Want to search every starting position from up to range + size. */ | |||
1087 | end = range + size; | |||
1088 | if (end > ms->size - ms->offset) { | |||
1089 | if (size > ms->size - ms->offset) | |||
1090 | end = 0; | |||
1091 | else | |||
1092 | end = ms->size - ms->offset - size; | |||
1093 | } | |||
1094 | ||||
1095 | /* | |||
1096 | * < and > and the flags are only in /etc/magic with search/1 so don't | |||
1097 | * support them with anything else. | |||
1098 | */ | |||
1099 | start = ms->base + ms->offset; | |||
1100 | if (end == 0) | |||
1101 | found = NULL((void *)0); | |||
1102 | else if (ml->test_operator == 'x') | |||
1103 | found = start; | |||
1104 | else if (range == 1) { | |||
1105 | n = magic_test_eq(start, ms->size - ms->offset, ml->test_string, | |||
1106 | size, cflag, bflag, Bflag); | |||
1107 | if (n == -1 && ml->test_operator == '<') | |||
1108 | found = start; | |||
1109 | else if (n == 1 && ml->test_operator == '>') | |||
1110 | found = start; | |||
1111 | else if (n == 0 && ml->test_operator == '=') | |||
1112 | found = start; | |||
1113 | else | |||
1114 | found = NULL((void *)0); | |||
1115 | } else { | |||
1116 | if (ml->test_operator != '=') | |||
1117 | return (-2); | |||
1118 | for (i = 0; i < end; i++) { | |||
1119 | n = magic_test_eq(start + i, ms->size - ms->offset - i, | |||
1120 | ml->test_string, size, cflag, bflag, Bflag); | |||
1121 | if (n == 0) { | |||
1122 | found = start + i; | |||
1123 | break; | |||
1124 | } | |||
1125 | } | |||
1126 | if (i == end) | |||
1127 | found = NULL((void *)0); | |||
1128 | } | |||
1129 | result = (found != NULL((void *)0)); | |||
1130 | ||||
1131 | if (result == !ml->test_not) { | |||
1132 | if (ml->result != NULL((void *)0)) | |||
1133 | magic_add_string(ms, ml, found, ms->size - ms->offset); | |||
1134 | if (result && found != NULL((void *)0) && ml->test_operator == '=') | |||
1135 | ms->offset = (found + size) - ms->base; | |||
1136 | } | |||
1137 | return (result); | |||
1138 | } | |||
1139 | ||||
1140 | static int | |||
1141 | magic_test_type_default(struct magic_line *ml, struct magic_state *ms) | |||
1142 | { | |||
1143 | if (!ms->matched && ml->result != NULL((void *)0)) | |||
1144 | magic_add_result(ms, ml, "%s", ""); | |||
1145 | return (!ms->matched); | |||
1146 | } | |||
1147 | ||||
1148 | static int | |||
1149 | magic_test_type_clear(struct magic_line *ml, struct magic_state *ms) | |||
1150 | { | |||
1151 | if (ml->result != NULL((void *)0)) | |||
1152 | magic_add_result(ms, ml, "%s", ""); | |||
1153 | return (1); | |||
1154 | } | |||
1155 | ||||
1156 | static int | |||
1157 | magic_test_type_name(__unused__attribute__((__unused__)) struct magic_line *ml, | |||
1158 | __unused__attribute__((__unused__)) struct magic_state *ms) | |||
1159 | { | |||
1160 | return (-1); | |||
1161 | } | |||
1162 | ||||
1163 | static int | |||
1164 | magic_test_type_use(__unused__attribute__((__unused__)) struct magic_line *ml, | |||
1165 | __unused__attribute__((__unused__)) struct magic_state *ms) | |||
1166 | { | |||
1167 | return (1); | |||
1168 | } | |||
1169 | ||||
1170 | static int (*magic_test_functions[])(struct magic_line *, | |||
1171 | struct magic_state *) = { | |||
1172 | magic_test_type_none, | |||
1173 | magic_test_type_byte, | |||
1174 | magic_test_type_short, | |||
1175 | magic_test_type_long, | |||
1176 | magic_test_type_quad, | |||
1177 | magic_test_type_ubyte, | |||
1178 | magic_test_type_ushort, | |||
1179 | magic_test_type_ulong, | |||
1180 | magic_test_type_uquad, | |||
1181 | magic_test_type_float, | |||
1182 | magic_test_type_double, | |||
1183 | magic_test_type_string, | |||
1184 | magic_test_type_pstring, | |||
1185 | magic_test_type_date, | |||
1186 | magic_test_type_qdate, | |||
1187 | magic_test_type_date, | |||
1188 | magic_test_type_qdate, | |||
1189 | magic_test_type_udate, | |||
1190 | magic_test_type_uqdate, | |||
1191 | magic_test_type_udate, | |||
1192 | magic_test_type_qdate, | |||
1193 | magic_test_type_short, | |||
1194 | magic_test_type_long, | |||
1195 | magic_test_type_quad, | |||
1196 | magic_test_type_ushort, | |||
1197 | magic_test_type_ulong, | |||
1198 | magic_test_type_uquad, | |||
1199 | magic_test_type_float, | |||
1200 | magic_test_type_double, | |||
1201 | magic_test_type_date, | |||
1202 | magic_test_type_qdate, | |||
1203 | magic_test_type_date, | |||
1204 | magic_test_type_qdate, | |||
1205 | magic_test_type_udate, | |||
1206 | magic_test_type_uqdate, | |||
1207 | magic_test_type_udate, | |||
1208 | magic_test_type_uqdate, | |||
1209 | magic_test_type_bestring16, | |||
1210 | magic_test_type_short, | |||
1211 | magic_test_type_long, | |||
1212 | magic_test_type_quad, | |||
1213 | magic_test_type_ushort, | |||
1214 | magic_test_type_ulong, | |||
1215 | magic_test_type_uquad, | |||
1216 | magic_test_type_float, | |||
1217 | magic_test_type_double, | |||
1218 | magic_test_type_date, | |||
1219 | magic_test_type_qdate, | |||
1220 | magic_test_type_date, | |||
1221 | magic_test_type_qdate, | |||
1222 | magic_test_type_udate, | |||
1223 | magic_test_type_uqdate, | |||
1224 | magic_test_type_udate, | |||
1225 | magic_test_type_uqdate, | |||
1226 | magic_test_type_lestring16, | |||
1227 | magic_test_type_melong, | |||
1228 | magic_test_type_medate, | |||
1229 | magic_test_type_meldate, | |||
1230 | magic_test_type_regex, | |||
1231 | magic_test_type_search, | |||
1232 | magic_test_type_default, | |||
1233 | magic_test_type_clear, | |||
1234 | magic_test_type_name, | |||
1235 | magic_test_type_use, | |||
1236 | }; | |||
1237 | ||||
1238 | static void | |||
1239 | magic_test_children(struct magic_line *ml, struct magic_state *ms, size_t start, | |||
1240 | int reverse) | |||
1241 | { | |||
1242 | struct magic_line *child; | |||
1243 | size_t saved_start, saved_offset; | |||
1244 | int saved_reverse; | |||
1245 | ||||
1246 | saved_start = ms->start; | |||
1247 | saved_reverse = ms->reverse; | |||
1248 | saved_offset = ms->offset; | |||
1249 | ||||
1250 | ms->matched = 0; /* no need to save, caller will set too */ | |||
1251 | ||||
1252 | TAILQ_FOREACH(child, &ml->children, entry)for((child) = ((&ml->children)->tqh_first); (child) != ((void *)0); (child) = ((child)->entry.tqe_next)) { | |||
1253 | ms->start = start; | |||
1254 | ms->reverse = reverse; | |||
1255 | ms->offset = saved_offset; | |||
1256 | ||||
1257 | magic_test_line(child, ms); | |||
1258 | } | |||
1259 | ||||
1260 | ms->start = saved_start; | |||
1261 | ms->reverse = saved_reverse; | |||
1262 | ms->offset = saved_offset; | |||
1263 | } | |||
1264 | ||||
1265 | static int | |||
1266 | magic_test_line(struct magic_line *ml, struct magic_state *ms) | |||
1267 | { | |||
1268 | struct magic *m = ml->root; | |||
1269 | struct magic_line *named; | |||
1270 | int64_t offset, wanted, next; | |||
1271 | int result; | |||
1272 | uint8_t b; | |||
1273 | uint16_t s; | |||
1274 | uint32_t l; | |||
1275 | ||||
1276 | if (ml->indirect_type == ' ') | |||
1277 | wanted = ms->start + ml->offset; | |||
1278 | else { | |||
1279 | wanted = ml->indirect_offset; | |||
1280 | if (ml->indirect_relative) { | |||
1281 | if (wanted < 0 && (size_t)-wanted > ms->offset) | |||
1282 | return (0); | |||
1283 | if (wanted > 0 && ms->offset + wanted > ms->size) | |||
1284 | return (0); | |||
1285 | next = ms->offset + ml->indirect_offset; | |||
1286 | } else | |||
1287 | next = wanted; | |||
1288 | ||||
1289 | switch (ml->indirect_type) { | |||
1290 | case 'b': | |||
1291 | case 'B': | |||
1292 | if (magic_copy_from(ms, next, &b, sizeof b) != 0) | |||
1293 | return (0); | |||
1294 | wanted = b; | |||
1295 | break; | |||
1296 | case 's': | |||
1297 | if (magic_copy_from(ms, next, &s, sizeof s) != 0) | |||
1298 | return (0); | |||
1299 | wanted = le16toh(s)((__uint16_t)(s)); | |||
1300 | break; | |||
1301 | case 'S': | |||
1302 | if (magic_copy_from(ms, next, &s, sizeof s) != 0) | |||
1303 | return (0); | |||
1304 | wanted = be16toh(s)(__uint16_t)(__builtin_constant_p(s) ? (__uint16_t)(((__uint16_t )(s) & 0xffU) << 8 | ((__uint16_t)(s) & 0xff00U ) >> 8) : __swap16md(s)); | |||
1305 | break; | |||
1306 | case 'l': | |||
1307 | if (magic_copy_from(ms, next, &l, sizeof l) != 0) | |||
1308 | return (0); | |||
1309 | wanted = le16toh(l)((__uint16_t)(l)); | |||
1310 | break; | |||
1311 | case 'L': | |||
1312 | if (magic_copy_from(ms, next, &l, sizeof l) != 0) | |||
1313 | return (0); | |||
1314 | wanted = be16toh(l)(__uint16_t)(__builtin_constant_p(l) ? (__uint16_t)(((__uint16_t )(l) & 0xffU) << 8 | ((__uint16_t)(l) & 0xff00U ) >> 8) : __swap16md(l)); | |||
1315 | break; | |||
1316 | } | |||
1317 | ||||
1318 | switch (ml->indirect_operator) { | |||
1319 | case '+': | |||
1320 | wanted += ml->indirect_operand; | |||
1321 | break; | |||
1322 | case '-': | |||
1323 | wanted -= ml->indirect_operand; | |||
1324 | break; | |||
1325 | case '*': | |||
1326 | wanted *= ml->indirect_operand; | |||
1327 | break; | |||
1328 | } | |||
1329 | } | |||
1330 | ||||
1331 | if (ml->offset_relative) { | |||
1332 | if (wanted < 0 && (size_t)-wanted > ms->offset) | |||
1333 | return (0); | |||
1334 | if (wanted > 0 && ms->offset + wanted > ms->size) | |||
1335 | return (0); | |||
1336 | offset = ms->offset + wanted; | |||
1337 | } else | |||
1338 | offset = wanted; | |||
1339 | if (offset < 0 || (size_t)offset > ms->size) | |||
1340 | return (0); | |||
1341 | ms->offset = offset; /* test function may update */ | |||
1342 | ||||
1343 | result = magic_test_functions[ml->type](ml, ms); | |||
1344 | if (result == -1) { | |||
1345 | magic_warn(ml, "test %s/%c failed", ml->type_string, | |||
1346 | ml->test_operator); | |||
1347 | return (0); | |||
1348 | } | |||
1349 | if (result == -2) { | |||
1350 | magic_warn(ml, "test %s/%c not implemented", ml->type_string, | |||
1351 | ml->test_operator); | |||
1352 | return (0); | |||
1353 | } | |||
1354 | if (result == ml->test_not) | |||
1355 | return (0); | |||
1356 | if (ml->mimetype != NULL((void *)0)) | |||
1357 | ms->mimetype = ml->mimetype; | |||
1358 | ||||
1359 | magic_warn(ml, "test %s/%c matched at offset %lld (now %zu): " | |||
1360 | "'%s'", ml->type_string, ml->test_operator, offset, | |||
1361 | ms->offset, ml->result == NULL((void *)0) ? "" : ml->result); | |||
1362 | ||||
1363 | if (ml->type == MAGIC_TYPE_USE) { | |||
1364 | if (*ml->name == '^') | |||
1365 | named = magic_get_named(m, ml->name + 1); | |||
1366 | else | |||
1367 | named = magic_get_named(m, ml->name); | |||
1368 | if (named == NULL((void *)0)) { | |||
1369 | magic_warn(ml, "no name found for use %s", ml->name); | |||
1370 | return (0); | |||
1371 | } | |||
1372 | magic_warn(ml, "use %s at offset %lld", ml->name, offset); | |||
1373 | magic_test_children(named, ms, offset, *ml->name == '^'); | |||
1374 | } | |||
1375 | ||||
1376 | magic_test_children(ml, ms, ms->start, ms->reverse); | |||
1377 | ||||
1378 | if (ml->type == MAGIC_TYPE_CLEAR) | |||
1379 | ms->matched = 0; | |||
1380 | else | |||
1381 | ms->matched = 1; | |||
1382 | return (ml->result != NULL((void *)0)); | |||
1383 | } | |||
1384 | ||||
1385 | const char * | |||
1386 | magic_test(struct magic *m, const void *base, size_t size, int flags) | |||
1387 | { | |||
1388 | struct magic_line *ml; | |||
1389 | static struct magic_state ms; | |||
1390 | ||||
1391 | memset(&ms, 0, sizeof ms); | |||
1392 | ||||
1393 | ms.base = base; | |||
1394 | ms.size = size; | |||
1395 | ||||
1396 | ms.text = !!(flags & MAGIC_TEST_TEXT0x1); | |||
1397 | ||||
1398 | RB_FOREACH(ml, magic_tree, &m->tree)for ((ml) = magic_tree_RB_MINMAX(&m->tree, -1); (ml) != ((void *)0); (ml) = magic_tree_RB_NEXT(ml)) { | |||
1399 | ms.offset = 0; | |||
1400 | if (ml->text == ms.text && magic_test_line(ml, &ms)) | |||
1401 | break; | |||
1402 | } | |||
1403 | ||||
1404 | if (*ms.out != '\0') { | |||
1405 | if (flags & MAGIC_TEST_MIME0x2) { | |||
1406 | if (ms.mimetype != NULL((void *)0)) | |||
1407 | return (ms.mimetype); | |||
1408 | return (NULL((void *)0)); | |||
1409 | } | |||
1410 | return (ms.out); | |||
1411 | } | |||
1412 | return (NULL((void *)0)); | |||
1413 | } |