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Commit | Line | Data |
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ef416fc2 | 1 | /* |
7e86f2f6 | 2 | * MIME typing routines for CUPS. |
ef416fc2 | 3 | * |
508de679 | 4 | * Copyright 2007-2016 by Apple Inc. |
7e86f2f6 | 5 | * Copyright 1997-2006 by Easy Software Products, all rights reserved. |
ef416fc2 | 6 | * |
e3101897 | 7 | * Licensed under Apache License v2.0. See the file "LICENSE" for more information. |
ef416fc2 | 8 | */ |
9 | ||
10 | /* | |
11 | * Include necessary headers... | |
12 | */ | |
13 | ||
71e16022 MS |
14 | #include <cups/string-private.h> |
15 | #include <cups/debug-private.h> | |
ef416fc2 | 16 | #include <locale.h> |
ef416fc2 | 17 | #include "mime.h" |
ef416fc2 | 18 | |
19 | ||
4400e98d | 20 | /* |
21 | * Local types... | |
22 | */ | |
23 | ||
24 | typedef struct _mime_filebuf_s /**** File buffer for MIME typing ****/ | |
25 | { | |
26 | cups_file_t *fp; /* File pointer */ | |
27 | int offset, /* Offset in file */ | |
28 | length; /* Length of buffered data */ | |
29 | unsigned char buffer[MIME_MAX_BUFFER];/* Buffered data */ | |
30 | } _mime_filebuf_t; | |
31 | ||
32 | ||
ef416fc2 | 33 | /* |
34 | * Local functions... | |
35 | */ | |
36 | ||
22c9029b MS |
37 | static int mime_compare_types(mime_type_t *t0, mime_type_t *t1); |
38 | static int mime_check_rules(const char *filename, _mime_filebuf_t *fb, | |
39 | mime_magic_t *rules); | |
40 | static int mime_patmatch(const char *s, const char *pat); | |
ef416fc2 | 41 | |
42 | ||
f11a948a MS |
43 | /* |
44 | * Local globals... | |
45 | */ | |
46 | ||
47 | #ifdef DEBUG | |
48 | static const char * const debug_ops[] = | |
49 | { /* Test names... */ | |
50 | "NOP", /* No operation */ | |
51 | "AND", /* Logical AND of all children */ | |
52 | "OR", /* Logical OR of all children */ | |
53 | "MATCH", /* Filename match */ | |
54 | "ASCII", /* ASCII characters in range */ | |
55 | "PRINTABLE", /* Printable characters (32-255) */ | |
56 | "STRING", /* String matches */ | |
57 | "CHAR", /* Character/byte matches */ | |
58 | "SHORT", /* Short/16-bit word matches */ | |
59 | "INT", /* Integer/32-bit word matches */ | |
60 | "LOCALE", /* Current locale matches string */ | |
61 | "CONTAINS", /* File contains a string */ | |
508de679 MS |
62 | "ISTRING", /* Case-insensitive string matches */ |
63 | "REGEX" /* Regular expression matches */ | |
f11a948a MS |
64 | }; |
65 | #endif /* DEBUG */ | |
66 | ||
67 | ||
ef416fc2 | 68 | /* |
69 | * 'mimeAddType()' - Add a MIME type to a database. | |
70 | */ | |
71 | ||
fa73b229 | 72 | mime_type_t * /* O - New (or existing) MIME type */ |
73 | mimeAddType(mime_t *mime, /* I - MIME database */ | |
74 | const char *super, /* I - Super-type name */ | |
75 | const char *type) /* I - Type name */ | |
ef416fc2 | 76 | { |
fa73b229 | 77 | mime_type_t *temp; /* New MIME type */ |
22c9029b | 78 | size_t typelen; /* Length of type name */ |
ef416fc2 | 79 | |
80 | ||
22c9029b MS |
81 | DEBUG_printf(("mimeAddType(mime=%p, super=\"%s\", type=\"%s\")", mime, super, |
82 | type)); | |
83 | ||
ef416fc2 | 84 | /* |
85 | * Range check input... | |
86 | */ | |
87 | ||
fa73b229 | 88 | if (!mime || !super || !type) |
22c9029b MS |
89 | { |
90 | DEBUG_puts("1mimeAddType: Returning NULL (bad arguments)."); | |
ef416fc2 | 91 | return (NULL); |
22c9029b | 92 | } |
ef416fc2 | 93 | |
94 | /* | |
95 | * See if the type already exists; if so, return the existing type... | |
96 | */ | |
97 | ||
98 | if ((temp = mimeType(mime, super, type)) != NULL) | |
22c9029b MS |
99 | { |
100 | DEBUG_printf(("1mimeAddType: Returning %p (existing).", temp)); | |
ef416fc2 | 101 | return (temp); |
22c9029b | 102 | } |
ef416fc2 | 103 | |
104 | /* | |
105 | * The type doesn't exist; add it... | |
106 | */ | |
107 | ||
fa73b229 | 108 | if (!mime->types) |
22c9029b | 109 | mime->types = cupsArrayNew((cups_array_func_t)mime_compare_types, NULL); |
ef416fc2 | 110 | |
fa73b229 | 111 | if (!mime->types) |
22c9029b MS |
112 | { |
113 | DEBUG_puts("1mimeAddType: Returning NULL (no types)."); | |
ef416fc2 | 114 | return (NULL); |
22c9029b MS |
115 | } |
116 | ||
117 | typelen = strlen(type) + 1; | |
ef416fc2 | 118 | |
22c9029b MS |
119 | if ((temp = calloc(1, sizeof(mime_type_t) - MIME_MAX_TYPE + typelen)) == NULL) |
120 | { | |
121 | DEBUG_puts("1mimeAddType: Returning NULL (out of memory)."); | |
fa73b229 | 122 | return (NULL); |
22c9029b | 123 | } |
ef416fc2 | 124 | |
ef416fc2 | 125 | strlcpy(temp->super, super, sizeof(temp->super)); |
22c9029b | 126 | memcpy(temp->type, type, typelen); |
dd1abb6b | 127 | temp->priority = 100; |
ef416fc2 | 128 | |
fa73b229 | 129 | cupsArrayAdd(mime->types, temp); |
ef416fc2 | 130 | |
22c9029b | 131 | DEBUG_printf(("1mimeAddType: Returning %p (new).", temp)); |
ef416fc2 | 132 | return (temp); |
133 | } | |
134 | ||
135 | ||
136 | /* | |
137 | * 'mimeAddTypeRule()' - Add a detection rule for a file type. | |
138 | */ | |
139 | ||
140 | int /* O - 0 on success, -1 on failure */ | |
141 | mimeAddTypeRule(mime_type_t *mt, /* I - Type to add to */ | |
142 | const char *rule) /* I - Rule to add */ | |
143 | { | |
144 | int num_values, /* Number of values seen */ | |
145 | op, /* Operation code */ | |
146 | logic, /* Logic for next rule */ | |
147 | invert; /* Invert following rule? */ | |
148 | char name[255], /* Name in rule string */ | |
149 | value[3][255], /* Value in rule string */ | |
150 | *ptr, /* Position in name or value */ | |
151 | quote; /* Quote character */ | |
152 | int length[3]; /* Length of each parameter */ | |
153 | mime_magic_t *temp, /* New rule */ | |
154 | *current; /* Current rule */ | |
155 | ||
156 | ||
22c9029b MS |
157 | DEBUG_printf(("mimeAddTypeRule(mt=%p(%s/%s), rule=\"%s\")", mt, |
158 | mt ? mt->super : "???", mt ? mt->type : "???", rule)); | |
159 | ||
ef416fc2 | 160 | /* |
161 | * Range check input... | |
162 | */ | |
163 | ||
fa73b229 | 164 | if (!mt || !rule) |
ef416fc2 | 165 | return (-1); |
166 | ||
167 | /* | |
168 | * Find the last rule in the top-level of the rules tree. | |
169 | */ | |
170 | ||
fa73b229 | 171 | for (current = mt->rules; current; current = current->next) |
172 | if (!current->next) | |
ef416fc2 | 173 | break; |
174 | ||
175 | /* | |
176 | * Parse the rules string. Most rules are either a file extension or a | |
177 | * comparison function: | |
178 | * | |
179 | * extension | |
180 | * function(parameters) | |
181 | */ | |
182 | ||
183 | logic = MIME_MAGIC_NOP; | |
184 | invert = 0; | |
185 | ||
ef416fc2 | 186 | while (*rule != '\0') |
187 | { | |
188 | while (isspace(*rule & 255)) | |
189 | rule ++; | |
190 | ||
191 | if (*rule == '(') | |
192 | { | |
22c9029b | 193 | DEBUG_puts("1mimeAddTypeRule: New parenthesis group"); |
ef416fc2 | 194 | logic = MIME_MAGIC_NOP; |
195 | rule ++; | |
196 | } | |
197 | else if (*rule == ')') | |
198 | { | |
22c9029b | 199 | DEBUG_puts("1mimeAddTypeRule: Close paren..."); |
ef416fc2 | 200 | if (current == NULL || current->parent == NULL) |
201 | return (-1); | |
202 | ||
203 | current = current->parent; | |
204 | ||
205 | if (current->parent == NULL) | |
206 | logic = MIME_MAGIC_OR; | |
207 | else | |
208 | logic = current->parent->op; | |
209 | ||
210 | rule ++; | |
211 | } | |
212 | else if (*rule == '+' && current != NULL) | |
213 | { | |
214 | if (logic != MIME_MAGIC_AND && | |
d2354e63 | 215 | current != NULL && current->prev != NULL) |
ef416fc2 | 216 | { |
217 | /* | |
218 | * OK, we have more than 1 rule in the current tree level... Make a | |
219 | * new group tree and move the previous rule to it... | |
220 | */ | |
221 | ||
222 | if ((temp = calloc(1, sizeof(mime_magic_t))) == NULL) | |
223 | return (-1); | |
224 | ||
225 | temp->op = MIME_MAGIC_AND; | |
226 | temp->child = current; | |
227 | temp->parent = current->parent; | |
228 | current->prev->next = temp; | |
229 | temp->prev = current->prev; | |
230 | ||
231 | current->prev = NULL; | |
232 | current->parent = temp; | |
233 | ||
22c9029b | 234 | DEBUG_printf(("1mimeAddTypeRule: Creating new AND group %p.", temp)); |
ef416fc2 | 235 | } |
f11a948a | 236 | else if (current->parent) |
ef416fc2 | 237 | { |
22c9029b | 238 | DEBUG_printf(("1mimeAddTypeRule: Setting group %p op to AND.", |
75bd9771 | 239 | current->parent)); |
ef416fc2 | 240 | current->parent->op = MIME_MAGIC_AND; |
241 | } | |
242 | ||
243 | logic = MIME_MAGIC_AND; | |
244 | rule ++; | |
245 | } | |
246 | else if (*rule == ',') | |
247 | { | |
248 | if (logic != MIME_MAGIC_OR && current != NULL) | |
249 | { | |
250 | /* | |
251 | * OK, we have two possibilities; either this is the top-level rule or | |
252 | * we have a bunch of AND rules at this level. | |
253 | */ | |
254 | ||
255 | if (current->parent == NULL) | |
256 | { | |
257 | /* | |
258 | * This is the top-level rule; we have to move *all* of the AND rules | |
259 | * down a level, as AND has precedence over OR. | |
260 | */ | |
261 | ||
262 | if ((temp = calloc(1, sizeof(mime_magic_t))) == NULL) | |
263 | return (-1); | |
264 | ||
22c9029b MS |
265 | DEBUG_printf(("1mimeAddTypeRule: Creating new AND group %p inside OR " |
266 | "group.", temp)); | |
ef416fc2 | 267 | |
268 | while (current->prev != NULL) | |
269 | { | |
270 | current->parent = temp; | |
271 | current = current->prev; | |
272 | } | |
273 | ||
274 | current->parent = temp; | |
275 | temp->op = MIME_MAGIC_AND; | |
276 | temp->child = current; | |
277 | ||
278 | mt->rules = current = temp; | |
279 | } | |
280 | else | |
281 | { | |
282 | /* | |
283 | * This isn't the top rule, so go up one level... | |
284 | */ | |
285 | ||
22c9029b | 286 | DEBUG_puts("1mimeAddTypeRule: Going up one level."); |
ef416fc2 | 287 | current = current->parent; |
288 | } | |
289 | } | |
290 | ||
291 | logic = MIME_MAGIC_OR; | |
292 | rule ++; | |
293 | } | |
294 | else if (*rule == '!') | |
295 | { | |
22c9029b | 296 | DEBUG_puts("1mimeAddTypeRule: NOT"); |
ef416fc2 | 297 | invert = 1; |
298 | rule ++; | |
299 | } | |
300 | else if (isalnum(*rule & 255)) | |
301 | { | |
302 | /* | |
303 | * Read an extension name or a function... | |
304 | */ | |
305 | ||
4400e98d | 306 | ptr = name; |
7e86f2f6 | 307 | while (isalnum(*rule & 255) && (size_t)(ptr - name) < (sizeof(name) - 1)) |
ef416fc2 | 308 | *ptr++ = *rule++; |
309 | ||
1f0275e3 | 310 | *ptr = '\0'; |
ef416fc2 | 311 | |
312 | if (*rule == '(') | |
313 | { | |
314 | /* | |
315 | * Read function parameters... | |
316 | */ | |
317 | ||
318 | rule ++; | |
319 | for (num_values = 0; | |
7e86f2f6 | 320 | num_values < (int)(sizeof(value) / sizeof(value[0])); |
ef416fc2 | 321 | num_values ++) |
322 | { | |
323 | ptr = value[num_values]; | |
324 | ||
7e86f2f6 | 325 | while ((size_t)(ptr - value[num_values]) < (sizeof(value[0]) - 1) && |
ef416fc2 | 326 | *rule != '\0' && *rule != ',' && *rule != ')') |
327 | { | |
328 | if (isspace(*rule & 255)) | |
329 | { | |
330 | /* | |
331 | * Ignore whitespace... | |
332 | */ | |
333 | ||
334 | rule ++; | |
335 | continue; | |
336 | } | |
337 | else if (*rule == '\"' || *rule == '\'') | |
338 | { | |
339 | /* | |
340 | * Copy quoted strings literally... | |
341 | */ | |
342 | ||
343 | quote = *rule++; | |
344 | ||
345 | while (*rule != '\0' && *rule != quote && | |
7e86f2f6 | 346 | (size_t)(ptr - value[num_values]) < (sizeof(value[0]) - 1)) |
ef416fc2 | 347 | *ptr++ = *rule++; |
348 | ||
349 | if (*rule == quote) | |
350 | rule ++; | |
351 | else | |
352 | return (-1); | |
353 | } | |
354 | else if (*rule == '<') | |
355 | { | |
356 | rule ++; | |
357 | ||
358 | while (*rule != '>' && *rule != '\0' && | |
7e86f2f6 | 359 | (size_t)(ptr - value[num_values]) < (sizeof(value[0]) - 1)) |
ef416fc2 | 360 | { |
361 | if (isxdigit(rule[0] & 255) && isxdigit(rule[1] & 255)) | |
362 | { | |
363 | if (isdigit(*rule)) | |
7e86f2f6 | 364 | *ptr = (char)((*rule++ - '0') << 4); |
ef416fc2 | 365 | else |
7e86f2f6 | 366 | *ptr = (char)((tolower(*rule++) - 'a' + 10) << 4); |
ef416fc2 | 367 | |
368 | if (isdigit(*rule)) | |
369 | *ptr++ |= *rule++ - '0'; | |
370 | else | |
371 | *ptr++ |= tolower(*rule++) - 'a' + 10; | |
372 | } | |
373 | else | |
374 | return (-1); | |
375 | } | |
376 | ||
377 | if (*rule == '>') | |
378 | rule ++; | |
379 | else | |
380 | return (-1); | |
381 | } | |
382 | else | |
383 | *ptr++ = *rule++; | |
384 | } | |
385 | ||
386 | *ptr = '\0'; | |
387 | length[num_values] = ptr - value[num_values]; | |
388 | ||
389 | if (*rule != ',') | |
c168a833 MS |
390 | { |
391 | num_values ++; | |
ef416fc2 | 392 | break; |
c168a833 | 393 | } |
ef416fc2 | 394 | |
395 | rule ++; | |
396 | } | |
397 | ||
398 | if (*rule != ')') | |
399 | return (-1); | |
400 | ||
401 | rule ++; | |
402 | ||
403 | /* | |
404 | * Figure out the function... | |
405 | */ | |
406 | ||
fa73b229 | 407 | if (!strcmp(name, "match")) |
ef416fc2 | 408 | op = MIME_MAGIC_MATCH; |
fa73b229 | 409 | else if (!strcmp(name, "ascii")) |
ef416fc2 | 410 | op = MIME_MAGIC_ASCII; |
fa73b229 | 411 | else if (!strcmp(name, "printable")) |
ef416fc2 | 412 | op = MIME_MAGIC_PRINTABLE; |
6ee54c07 MS |
413 | else if (!strcmp(name, "regex")) |
414 | op = MIME_MAGIC_REGEX; | |
fa73b229 | 415 | else if (!strcmp(name, "string")) |
ef416fc2 | 416 | op = MIME_MAGIC_STRING; |
fa73b229 | 417 | else if (!strcmp(name, "istring")) |
ef416fc2 | 418 | op = MIME_MAGIC_ISTRING; |
fa73b229 | 419 | else if (!strcmp(name, "char")) |
ef416fc2 | 420 | op = MIME_MAGIC_CHAR; |
fa73b229 | 421 | else if (!strcmp(name, "short")) |
ef416fc2 | 422 | op = MIME_MAGIC_SHORT; |
fa73b229 | 423 | else if (!strcmp(name, "int")) |
ef416fc2 | 424 | op = MIME_MAGIC_INT; |
fa73b229 | 425 | else if (!strcmp(name, "locale")) |
ef416fc2 | 426 | op = MIME_MAGIC_LOCALE; |
fa73b229 | 427 | else if (!strcmp(name, "contains")) |
ef416fc2 | 428 | op = MIME_MAGIC_CONTAINS; |
dd1abb6b MS |
429 | else if (!strcmp(name, "priority") && num_values == 1) |
430 | { | |
431 | mt->priority = atoi(value[0]); | |
432 | continue; | |
433 | } | |
ef416fc2 | 434 | else |
435 | return (-1); | |
436 | } | |
437 | else | |
438 | { | |
439 | /* | |
440 | * This is just a filename match on the extension... | |
441 | */ | |
442 | ||
443 | snprintf(value[0], sizeof(value[0]), "*.%s", name); | |
7e86f2f6 | 444 | length[0] = (int)strlen(value[0]); |
ef416fc2 | 445 | op = MIME_MAGIC_MATCH; |
446 | } | |
447 | ||
448 | /* | |
449 | * Add a rule for this operation. | |
450 | */ | |
451 | ||
452 | if ((temp = calloc(1, sizeof(mime_magic_t))) == NULL) | |
453 | return (-1); | |
454 | ||
7e86f2f6 | 455 | temp->invert = (short)invert; |
ef416fc2 | 456 | if (current != NULL) |
457 | { | |
458 | temp->parent = current->parent; | |
459 | current->next = temp; | |
460 | } | |
461 | else | |
462 | mt->rules = temp; | |
463 | ||
464 | temp->prev = current; | |
465 | ||
466 | if (logic == MIME_MAGIC_NOP) | |
467 | { | |
468 | /* | |
469 | * Add parenthetical grouping... | |
470 | */ | |
471 | ||
22c9029b MS |
472 | DEBUG_printf(("1mimeAddTypeRule: Making new OR group %p for " |
473 | "parenthesis.", temp)); | |
ef416fc2 | 474 | |
475 | temp->op = MIME_MAGIC_OR; | |
476 | ||
477 | if ((temp->child = calloc(1, sizeof(mime_magic_t))) == NULL) | |
478 | return (-1); | |
479 | ||
480 | temp->child->parent = temp; | |
f11a948a MS |
481 | temp->child->invert = temp->invert; |
482 | temp->invert = 0; | |
ef416fc2 | 483 | |
484 | temp = temp->child; | |
485 | logic = MIME_MAGIC_OR; | |
486 | } | |
487 | ||
22c9029b MS |
488 | DEBUG_printf(("1mimeAddTypeRule: Adding %p: %s, op=MIME_MAGIC_%s(%d), " |
489 | "logic=MIME_MAGIC_%s, invert=%d.", temp, name, | |
490 | debug_ops[op], op, debug_ops[logic], invert)); | |
ef416fc2 | 491 | |
492 | /* | |
493 | * Fill in data for the rule... | |
494 | */ | |
495 | ||
496 | current = temp; | |
7e86f2f6 | 497 | temp->op = (short)op; |
ef416fc2 | 498 | invert = 0; |
499 | ||
500 | switch (op) | |
501 | { | |
502 | case MIME_MAGIC_MATCH : | |
7e86f2f6 | 503 | if ((size_t)length[0] > (sizeof(temp->value.matchv) - 1)) |
ef416fc2 | 504 | return (-1); |
5a9febac | 505 | strlcpy(temp->value.matchv, value[0], sizeof(temp->value.matchv)); |
ef416fc2 | 506 | break; |
507 | case MIME_MAGIC_ASCII : | |
508 | case MIME_MAGIC_PRINTABLE : | |
509 | temp->offset = strtol(value[0], NULL, 0); | |
510 | temp->length = strtol(value[1], NULL, 0); | |
511 | if (temp->length > MIME_MAX_BUFFER) | |
512 | temp->length = MIME_MAX_BUFFER; | |
513 | break; | |
6ee54c07 MS |
514 | case MIME_MAGIC_REGEX : |
515 | temp->offset = strtol(value[0], NULL, 0); | |
516 | temp->length = MIME_MAX_BUFFER; | |
517 | if (regcomp(&(temp->value.rev), value[1], REG_NOSUB | REG_EXTENDED)) | |
518 | return (-1); | |
519 | break; | |
ef416fc2 | 520 | case MIME_MAGIC_STRING : |
521 | case MIME_MAGIC_ISTRING : | |
522 | temp->offset = strtol(value[0], NULL, 0); | |
7e86f2f6 | 523 | if ((size_t)length[1] > sizeof(temp->value.stringv)) |
ef416fc2 | 524 | return (-1); |
525 | temp->length = length[1]; | |
07623986 | 526 | memcpy(temp->value.stringv, value[1], (size_t)length[1]); |
ef416fc2 | 527 | break; |
528 | case MIME_MAGIC_CHAR : | |
529 | temp->offset = strtol(value[0], NULL, 0); | |
530 | if (length[1] == 1) | |
7e86f2f6 | 531 | temp->value.charv = (unsigned char)value[1][0]; |
ef416fc2 | 532 | else |
cc754834 MS |
533 | temp->value.charv = (unsigned char)strtol(value[1], NULL, 0); |
534 | ||
535 | DEBUG_printf(("1mimeAddTypeRule: CHAR(%d,0x%02x)", temp->offset, | |
536 | temp->value.charv)); | |
ef416fc2 | 537 | break; |
538 | case MIME_MAGIC_SHORT : | |
539 | temp->offset = strtol(value[0], NULL, 0); | |
cc754834 | 540 | temp->value.shortv = (unsigned short)strtol(value[1], NULL, 0); |
ef416fc2 | 541 | break; |
542 | case MIME_MAGIC_INT : | |
543 | temp->offset = strtol(value[0], NULL, 0); | |
cc754834 | 544 | temp->value.intv = (unsigned)strtol(value[1], NULL, 0); |
ef416fc2 | 545 | break; |
546 | case MIME_MAGIC_LOCALE : | |
7e86f2f6 | 547 | if ((size_t)length[0] > (sizeof(temp->value.localev) - 1)) |
ef416fc2 | 548 | return (-1); |
549 | ||
5a9febac | 550 | strlcpy(temp->value.localev, value[0], sizeof(temp->value.localev)); |
ef416fc2 | 551 | break; |
552 | case MIME_MAGIC_CONTAINS : | |
553 | temp->offset = strtol(value[0], NULL, 0); | |
554 | temp->region = strtol(value[1], NULL, 0); | |
7e86f2f6 | 555 | if ((size_t)length[2] > sizeof(temp->value.stringv)) |
ef416fc2 | 556 | return (-1); |
557 | temp->length = length[2]; | |
07623986 | 558 | memcpy(temp->value.stringv, value[2], (size_t)length[2]); |
ef416fc2 | 559 | break; |
560 | } | |
561 | } | |
562 | else | |
563 | break; | |
564 | } | |
565 | ||
566 | return (0); | |
567 | } | |
568 | ||
569 | ||
570 | /* | |
571 | * 'mimeFileType()' - Determine the type of a file. | |
572 | */ | |
573 | ||
574 | mime_type_t * /* O - Type of file */ | |
575 | mimeFileType(mime_t *mime, /* I - MIME database */ | |
4400e98d | 576 | const char *pathname, /* I - Name of file to check on disk */ |
577 | const char *filename, /* I - Original filename or NULL */ | |
ef416fc2 | 578 | int *compression) /* O - Is the file compressed? */ |
579 | { | |
4400e98d | 580 | _mime_filebuf_t fb; /* File buffer */ |
581 | const char *base; /* Base filename of file */ | |
dd1abb6b MS |
582 | mime_type_t *type, /* File type */ |
583 | *best; /* Best match */ | |
ef416fc2 | 584 | |
585 | ||
b423cd4c | 586 | DEBUG_printf(("mimeFileType(mime=%p, pathname=\"%s\", filename=\"%s\", " |
f11a948a | 587 | "compression=%p)", mime, pathname, filename, compression)); |
ef416fc2 | 588 | |
589 | /* | |
590 | * Range check input parameters... | |
591 | */ | |
592 | ||
fa73b229 | 593 | if (!mime || !pathname) |
22c9029b MS |
594 | { |
595 | DEBUG_puts("1mimeFileType: Returning NULL."); | |
ef416fc2 | 596 | return (NULL); |
22c9029b | 597 | } |
ef416fc2 | 598 | |
599 | /* | |
600 | * Try to open the file... | |
601 | */ | |
602 | ||
4400e98d | 603 | if ((fb.fp = cupsFileOpen(pathname, "r")) == NULL) |
22c9029b MS |
604 | { |
605 | DEBUG_printf(("1mimeFileType: Unable to open \"%s\": %s", pathname, | |
606 | strerror(errno))); | |
607 | DEBUG_puts("1mimeFileType: Returning NULL."); | |
ef416fc2 | 608 | return (NULL); |
22c9029b | 609 | } |
ef416fc2 | 610 | |
cbf9404a MS |
611 | /* |
612 | * Then preload the first MIME_MAX_BUFFER bytes of the file into the file | |
613 | * buffer, returning an error if we can't read anything... | |
614 | */ | |
615 | ||
616 | fb.offset = 0; | |
617 | fb.length = (int)cupsFileRead(fb.fp, (char *)fb.buffer, MIME_MAX_BUFFER); | |
618 | ||
619 | if (fb.length <= 0) | |
620 | { | |
621 | DEBUG_printf(("1mimeFileType: Unable to read from \"%s\": %s", pathname, strerror(errno))); | |
622 | DEBUG_puts("1mimeFileType: Returning NULL."); | |
623 | ||
624 | cupsFileClose(fb.fp); | |
625 | ||
626 | return (NULL); | |
627 | } | |
4400e98d | 628 | |
ef416fc2 | 629 | /* |
4400e98d | 630 | * Figure out the base filename (without directory portion)... |
ef416fc2 | 631 | */ |
632 | ||
4400e98d | 633 | if (filename) |
634 | { | |
635 | if ((base = strrchr(filename, '/')) != NULL) | |
636 | base ++; | |
637 | else | |
91c84a35 | 638 | base = filename; |
4400e98d | 639 | } |
640 | else if ((base = strrchr(pathname, '/')) != NULL) | |
641 | base ++; | |
ef416fc2 | 642 | else |
91c84a35 | 643 | base = pathname; |
ef416fc2 | 644 | |
645 | /* | |
646 | * Then check it against all known types... | |
647 | */ | |
648 | ||
dd1abb6b | 649 | for (type = (mime_type_t *)cupsArrayFirst(mime->types), best = NULL; |
fa73b229 | 650 | type; |
651 | type = (mime_type_t *)cupsArrayNext(mime->types)) | |
22c9029b | 652 | if (mime_check_rules(base, &fb, type->rules)) |
dd1abb6b MS |
653 | { |
654 | if (!best || type->priority > best->priority) | |
655 | best = type; | |
656 | } | |
ef416fc2 | 657 | |
658 | /* | |
659 | * Finally, close the file and return a match (if any)... | |
660 | */ | |
661 | ||
662 | if (compression) | |
22c9029b | 663 | { |
4400e98d | 664 | *compression = cupsFileCompression(fb.fp); |
22c9029b MS |
665 | DEBUG_printf(("1mimeFileType: *compression=%d", *compression)); |
666 | } | |
ef416fc2 | 667 | |
4400e98d | 668 | cupsFileClose(fb.fp); |
ef416fc2 | 669 | |
22c9029b MS |
670 | DEBUG_printf(("1mimeFileType: Returning %p(%s/%s).", best, |
671 | best ? best->super : "???", best ? best->type : "???")); | |
dd1abb6b | 672 | return (best); |
ef416fc2 | 673 | } |
674 | ||
675 | ||
676 | /* | |
677 | * 'mimeType()' - Lookup a file type. | |
678 | */ | |
679 | ||
fa73b229 | 680 | mime_type_t * /* O - Matching file type definition */ |
681 | mimeType(mime_t *mime, /* I - MIME database */ | |
682 | const char *super, /* I - Super-type name */ | |
683 | const char *type) /* I - Type name */ | |
ef416fc2 | 684 | { |
22c9029b MS |
685 | mime_type_t key, /* MIME type search key */ |
686 | *mt; /* Matching type */ | |
687 | ||
fa73b229 | 688 | |
22c9029b MS |
689 | DEBUG_printf(("mimeType(mime=%p, super=\"%s\", type=\"%s\")", mime, super, |
690 | type)); | |
ef416fc2 | 691 | |
692 | /* | |
693 | * Range check input... | |
694 | */ | |
695 | ||
fa73b229 | 696 | if (!mime || !super || !type) |
22c9029b MS |
697 | { |
698 | DEBUG_puts("1mimeType: Returning NULL."); | |
ef416fc2 | 699 | return (NULL); |
22c9029b | 700 | } |
ef416fc2 | 701 | |
702 | /* | |
703 | * Lookup the type in the array... | |
704 | */ | |
705 | ||
706 | strlcpy(key.super, super, sizeof(key.super)); | |
fa73b229 | 707 | strlcpy(key.type, type, sizeof(key.type)); |
ef416fc2 | 708 | |
22c9029b MS |
709 | mt = (mime_type_t *)cupsArrayFind(mime->types, &key); |
710 | DEBUG_printf(("1mimeType: Returning %p.", mt)); | |
711 | return (mt); | |
ef416fc2 | 712 | } |
713 | ||
714 | ||
715 | /* | |
22c9029b | 716 | * 'mime_compare_types()' - Compare two MIME super/type names. |
ef416fc2 | 717 | */ |
718 | ||
fa73b229 | 719 | static int /* O - Result of comparison */ |
22c9029b MS |
720 | mime_compare_types(mime_type_t *t0, /* I - First type */ |
721 | mime_type_t *t1) /* I - Second type */ | |
ef416fc2 | 722 | { |
fa73b229 | 723 | int i; /* Result of comparison */ |
ef416fc2 | 724 | |
725 | ||
88f9aafc MS |
726 | if ((i = _cups_strcasecmp(t0->super, t1->super)) == 0) |
727 | i = _cups_strcasecmp(t0->type, t1->type); | |
ef416fc2 | 728 | |
729 | return (i); | |
730 | } | |
731 | ||
732 | ||
733 | /* | |
22c9029b | 734 | * 'mime_check_rules()' - Check each rule in a list. |
ef416fc2 | 735 | */ |
736 | ||
737 | static int /* O - 1 if match, 0 if no match */ | |
22c9029b MS |
738 | mime_check_rules( |
739 | const char *filename, /* I - Filename */ | |
740 | _mime_filebuf_t *fb, /* I - File to check */ | |
741 | mime_magic_t *rules) /* I - Rules to check */ | |
ef416fc2 | 742 | { |
743 | int n; /* Looping var */ | |
744 | int region; /* Region to look at */ | |
745 | int logic, /* Logic to apply */ | |
7e86f2f6 MS |
746 | result; /* Result of test */ |
747 | unsigned intv; /* Integer value */ | |
ef416fc2 | 748 | short shortv; /* Short value */ |
4400e98d | 749 | unsigned char *bufptr; /* Pointer into buffer */ |
ef416fc2 | 750 | |
751 | ||
22c9029b | 752 | DEBUG_printf(("4mime_check_rules(filename=\"%s\", fb=%p, rules=%p)", filename, |
b423cd4c | 753 | fb, rules)); |
ef416fc2 | 754 | |
755 | if (rules == NULL) | |
756 | return (0); | |
757 | ||
758 | if (rules->parent == NULL) | |
759 | logic = MIME_MAGIC_OR; | |
760 | else | |
761 | logic = rules->parent->op; | |
762 | ||
4400e98d | 763 | result = 0; |
ef416fc2 | 764 | |
765 | while (rules != NULL) | |
766 | { | |
767 | /* | |
768 | * Compute the result of this rule... | |
769 | */ | |
770 | ||
771 | switch (rules->op) | |
772 | { | |
773 | case MIME_MAGIC_MATCH : | |
22c9029b | 774 | result = mime_patmatch(filename, rules->value.matchv); |
ef416fc2 | 775 | break; |
776 | ||
777 | case MIME_MAGIC_ASCII : | |
778 | /* | |
779 | * Load the buffer if necessary... | |
780 | */ | |
781 | ||
4400e98d | 782 | if (fb->offset < 0 || rules->offset < fb->offset || |
783 | (rules->offset + rules->length) > (fb->offset + fb->length)) | |
ef416fc2 | 784 | { |
785 | /* | |
786 | * Reload file buffer... | |
787 | */ | |
788 | ||
4400e98d | 789 | cupsFileSeek(fb->fp, rules->offset); |
790 | fb->length = cupsFileRead(fb->fp, (char *)fb->buffer, | |
791 | sizeof(fb->buffer)); | |
792 | fb->offset = rules->offset; | |
cbf9404a MS |
793 | |
794 | DEBUG_printf(("4mime_check_rules: MIME_MAGIC_ASCII fb->length=%d", fb->length)); | |
ef416fc2 | 795 | } |
796 | ||
797 | /* | |
798 | * Test for ASCII printable characters plus standard control chars. | |
799 | */ | |
800 | ||
4400e98d | 801 | if ((rules->offset + rules->length) > (fb->offset + fb->length)) |
802 | n = fb->offset + fb->length - rules->offset; | |
ef416fc2 | 803 | else |
804 | n = rules->length; | |
805 | ||
4400e98d | 806 | bufptr = fb->buffer + rules->offset - fb->offset; |
ef416fc2 | 807 | while (n > 0) |
808 | if ((*bufptr >= 32 && *bufptr <= 126) || | |
809 | (*bufptr >= 8 && *bufptr <= 13) || | |
810 | *bufptr == 26 || *bufptr == 27) | |
811 | { | |
812 | n --; | |
813 | bufptr ++; | |
814 | } | |
815 | else | |
816 | break; | |
817 | ||
818 | result = (n == 0); | |
819 | break; | |
820 | ||
821 | case MIME_MAGIC_PRINTABLE : | |
822 | /* | |
823 | * Load the buffer if necessary... | |
824 | */ | |
825 | ||
4400e98d | 826 | if (fb->offset < 0 || rules->offset < fb->offset || |
827 | (rules->offset + rules->length) > (fb->offset + fb->length)) | |
ef416fc2 | 828 | { |
829 | /* | |
830 | * Reload file buffer... | |
831 | */ | |
832 | ||
4400e98d | 833 | cupsFileSeek(fb->fp, rules->offset); |
834 | fb->length = cupsFileRead(fb->fp, (char *)fb->buffer, | |
835 | sizeof(fb->buffer)); | |
836 | fb->offset = rules->offset; | |
cbf9404a MS |
837 | |
838 | DEBUG_printf(("4mime_check_rules: MIME_MAGIC_PRINTABLE fb->length=%d", fb->length)); | |
ef416fc2 | 839 | } |
840 | ||
841 | /* | |
842 | * Test for 8-bit printable characters plus standard control chars. | |
843 | */ | |
844 | ||
4400e98d | 845 | if ((rules->offset + rules->length) > (fb->offset + fb->length)) |
846 | n = fb->offset + fb->length - rules->offset; | |
ef416fc2 | 847 | else |
848 | n = rules->length; | |
849 | ||
4400e98d | 850 | bufptr = fb->buffer + rules->offset - fb->offset; |
ef416fc2 | 851 | |
852 | while (n > 0) | |
853 | if (*bufptr >= 128 || | |
854 | (*bufptr >= 32 && *bufptr <= 126) || | |
855 | (*bufptr >= 8 && *bufptr <= 13) || | |
856 | *bufptr == 26 || *bufptr == 27) | |
857 | { | |
858 | n --; | |
859 | bufptr ++; | |
860 | } | |
861 | else | |
862 | break; | |
863 | ||
864 | result = (n == 0); | |
865 | break; | |
866 | ||
6ee54c07 MS |
867 | case MIME_MAGIC_REGEX : |
868 | DEBUG_printf(("5mime_check_rules: regex(%d, \"%s\")", rules->offset, | |
869 | rules->value.stringv)); | |
870 | ||
871 | /* | |
872 | * Load the buffer if necessary... | |
873 | */ | |
874 | ||
875 | if (fb->offset < 0 || rules->offset < fb->offset || | |
876 | (rules->offset + rules->length) > (fb->offset + fb->length)) | |
877 | { | |
878 | /* | |
879 | * Reload file buffer... | |
880 | */ | |
881 | ||
882 | cupsFileSeek(fb->fp, rules->offset); | |
883 | fb->length = cupsFileRead(fb->fp, (char *)fb->buffer, | |
884 | sizeof(fb->buffer)); | |
885 | fb->offset = rules->offset; | |
886 | ||
cbf9404a MS |
887 | DEBUG_printf(("4mime_check_rules: MIME_MAGIC_REGEX fb->length=%d", fb->length)); |
888 | ||
6ee54c07 MS |
889 | DEBUG_printf(("5mime_check_rules: loaded %d byte fb->buffer at %d, starts " |
890 | "with \"%c%c%c%c\".", | |
891 | fb->length, fb->offset, fb->buffer[0], fb->buffer[1], | |
892 | fb->buffer[2], fb->buffer[3])); | |
893 | } | |
894 | ||
895 | /* | |
896 | * Compare the buffer against the string. If the file is too | |
897 | * short then don't compare - it can't match... | |
898 | */ | |
899 | ||
9c477430 | 900 | if (fb->length > 0) |
6ee54c07 MS |
901 | { |
902 | char temp[MIME_MAX_BUFFER + 1]; | |
903 | /* Temporary buffer */ | |
904 | ||
07623986 | 905 | memcpy(temp, fb->buffer, (size_t)fb->length); |
6ee54c07 MS |
906 | temp[fb->length] = '\0'; |
907 | result = !regexec(&(rules->value.rev), temp, 0, NULL, 0); | |
908 | } | |
909 | ||
910 | DEBUG_printf(("5mime_check_rules: result=%d", result)); | |
911 | break; | |
912 | ||
ef416fc2 | 913 | case MIME_MAGIC_STRING : |
22c9029b | 914 | DEBUG_printf(("5mime_check_rules: string(%d, \"%s\")", rules->offset, |
ef416fc2 | 915 | rules->value.stringv)); |
916 | ||
917 | /* | |
918 | * Load the buffer if necessary... | |
919 | */ | |
920 | ||
4400e98d | 921 | if (fb->offset < 0 || rules->offset < fb->offset || |
922 | (rules->offset + rules->length) > (fb->offset + fb->length)) | |
ef416fc2 | 923 | { |
924 | /* | |
925 | * Reload file buffer... | |
926 | */ | |
927 | ||
4400e98d | 928 | cupsFileSeek(fb->fp, rules->offset); |
929 | fb->length = cupsFileRead(fb->fp, (char *)fb->buffer, | |
930 | sizeof(fb->buffer)); | |
931 | fb->offset = rules->offset; | |
ef416fc2 | 932 | |
cbf9404a MS |
933 | DEBUG_printf(("4mime_check_rules: MIME_MAGIC_STRING fb->length=%d", fb->length)); |
934 | ||
22c9029b MS |
935 | DEBUG_printf(("5mime_check_rules: loaded %d byte fb->buffer at %d, starts " |
936 | "with \"%c%c%c%c\".", | |
4400e98d | 937 | fb->length, fb->offset, fb->buffer[0], fb->buffer[1], |
938 | fb->buffer[2], fb->buffer[3])); | |
ef416fc2 | 939 | } |
940 | ||
941 | /* | |
942 | * Compare the buffer against the string. If the file is too | |
943 | * short then don't compare - it can't match... | |
944 | */ | |
945 | ||
4400e98d | 946 | if ((rules->offset + rules->length) > (fb->offset + fb->length)) |
ef416fc2 | 947 | result = 0; |
948 | else | |
7e86f2f6 | 949 | result = !memcmp(fb->buffer + rules->offset - fb->offset, rules->value.stringv, (size_t)rules->length); |
22c9029b | 950 | DEBUG_printf(("5mime_check_rules: result=%d", result)); |
ef416fc2 | 951 | break; |
952 | ||
953 | case MIME_MAGIC_ISTRING : | |
954 | /* | |
955 | * Load the buffer if necessary... | |
956 | */ | |
957 | ||
4400e98d | 958 | if (fb->offset < 0 || rules->offset < fb->offset || |
959 | (rules->offset + rules->length) > (fb->offset + fb->length)) | |
ef416fc2 | 960 | { |
961 | /* | |
962 | * Reload file buffer... | |
963 | */ | |
964 | ||
4400e98d | 965 | cupsFileSeek(fb->fp, rules->offset); |
966 | fb->length = cupsFileRead(fb->fp, (char *)fb->buffer, | |
967 | sizeof(fb->buffer)); | |
968 | fb->offset = rules->offset; | |
cbf9404a MS |
969 | |
970 | DEBUG_printf(("4mime_check_rules: MIME_MAGIC_ISTRING fb->length=%d", fb->length)); | |
ef416fc2 | 971 | } |
972 | ||
973 | /* | |
974 | * Compare the buffer against the string. If the file is too | |
975 | * short then don't compare - it can't match... | |
976 | */ | |
977 | ||
4400e98d | 978 | if ((rules->offset + rules->length) > (fb->offset + fb->length)) |
ef416fc2 | 979 | result = 0; |
980 | else | |
7e86f2f6 | 981 | result = !_cups_strncasecmp((char *)fb->buffer + rules->offset - fb->offset, rules->value.stringv, (size_t)rules->length); |
ef416fc2 | 982 | break; |
983 | ||
984 | case MIME_MAGIC_CHAR : | |
985 | /* | |
986 | * Load the buffer if necessary... | |
987 | */ | |
988 | ||
4400e98d | 989 | if (fb->offset < 0 || rules->offset < fb->offset) |
ef416fc2 | 990 | { |
991 | /* | |
992 | * Reload file buffer... | |
993 | */ | |
994 | ||
4400e98d | 995 | cupsFileSeek(fb->fp, rules->offset); |
996 | fb->length = cupsFileRead(fb->fp, (char *)fb->buffer, | |
997 | sizeof(fb->buffer)); | |
998 | fb->offset = rules->offset; | |
cbf9404a MS |
999 | |
1000 | DEBUG_printf(("4mime_check_rules: MIME_MAGIC_CHAR fb->length=%d", fb->length)); | |
ef416fc2 | 1001 | } |
1002 | ||
1003 | /* | |
1004 | * Compare the character values; if the file is too short, it | |
1005 | * can't match... | |
1006 | */ | |
1007 | ||
4400e98d | 1008 | if (fb->length < 1) |
ef416fc2 | 1009 | result = 0; |
1010 | else | |
4400e98d | 1011 | result = (fb->buffer[rules->offset - fb->offset] == |
1012 | rules->value.charv); | |
ef416fc2 | 1013 | break; |
1014 | ||
1015 | case MIME_MAGIC_SHORT : | |
1016 | /* | |
1017 | * Load the buffer if necessary... | |
1018 | */ | |
1019 | ||
4400e98d | 1020 | if (fb->offset < 0 || rules->offset < fb->offset || |
1021 | (rules->offset + 2) > (fb->offset + fb->length)) | |
ef416fc2 | 1022 | { |
1023 | /* | |
1024 | * Reload file buffer... | |
1025 | */ | |
1026 | ||
4400e98d | 1027 | cupsFileSeek(fb->fp, rules->offset); |
1028 | fb->length = cupsFileRead(fb->fp, (char *)fb->buffer, | |
1029 | sizeof(fb->buffer)); | |
1030 | fb->offset = rules->offset; | |
cbf9404a MS |
1031 | |
1032 | DEBUG_printf(("4mime_check_rules: MIME_MAGIC_SHORT fb->length=%d", fb->length)); | |
ef416fc2 | 1033 | } |
1034 | ||
1035 | /* | |
1036 | * Compare the short values; if the file is too short, it | |
1037 | * can't match... | |
1038 | */ | |
1039 | ||
4400e98d | 1040 | if (fb->length < 2) |
ef416fc2 | 1041 | result = 0; |
1042 | else | |
1043 | { | |
4400e98d | 1044 | bufptr = fb->buffer + rules->offset - fb->offset; |
7e86f2f6 | 1045 | shortv = (short)((bufptr[0] << 8) | bufptr[1]); |
ef416fc2 | 1046 | result = (shortv == rules->value.shortv); |
1047 | } | |
1048 | break; | |
1049 | ||
1050 | case MIME_MAGIC_INT : | |
1051 | /* | |
1052 | * Load the buffer if necessary... | |
1053 | */ | |
1054 | ||
4400e98d | 1055 | if (fb->offset < 0 || rules->offset < fb->offset || |
1056 | (rules->offset + 4) > (fb->offset + fb->length)) | |
ef416fc2 | 1057 | { |
1058 | /* | |
1059 | * Reload file buffer... | |
1060 | */ | |
1061 | ||
4400e98d | 1062 | cupsFileSeek(fb->fp, rules->offset); |
1063 | fb->length = cupsFileRead(fb->fp, (char *)fb->buffer, | |
1064 | sizeof(fb->buffer)); | |
1065 | fb->offset = rules->offset; | |
cbf9404a MS |
1066 | |
1067 | DEBUG_printf(("4mime_check_rules: MIME_MAGIC_INT fb->length=%d", fb->length)); | |
ef416fc2 | 1068 | } |
1069 | ||
1070 | /* | |
1071 | * Compare the int values; if the file is too short, it | |
1072 | * can't match... | |
1073 | */ | |
1074 | ||
4400e98d | 1075 | if (fb->length < 4) |
ef416fc2 | 1076 | result = 0; |
1077 | else | |
1078 | { | |
4400e98d | 1079 | bufptr = fb->buffer + rules->offset - fb->offset; |
7e86f2f6 | 1080 | intv = (unsigned)((((((bufptr[0] << 8) | bufptr[1]) << 8) | bufptr[2]) << 8) | bufptr[3]); |
ef416fc2 | 1081 | result = (intv == rules->value.intv); |
1082 | } | |
1083 | break; | |
1084 | ||
1085 | case MIME_MAGIC_LOCALE : | |
1086 | #if defined(WIN32) || defined(__EMX__) || defined(__APPLE__) | |
7e86f2f6 | 1087 | result = !strcmp(rules->value.localev, setlocale(LC_ALL, "")); |
ef416fc2 | 1088 | #else |
7e86f2f6 | 1089 | result = !strcmp(rules->value.localev, setlocale(LC_MESSAGES, "")); |
ef416fc2 | 1090 | #endif /* __APPLE__ */ |
1091 | break; | |
1092 | ||
1093 | case MIME_MAGIC_CONTAINS : | |
1094 | /* | |
1095 | * Load the buffer if necessary... | |
1096 | */ | |
1097 | ||
4400e98d | 1098 | if (fb->offset < 0 || rules->offset < fb->offset || |
1099 | (rules->offset + rules->region) > (fb->offset + fb->length)) | |
ef416fc2 | 1100 | { |
1101 | /* | |
1102 | * Reload file buffer... | |
1103 | */ | |
1104 | ||
4400e98d | 1105 | cupsFileSeek(fb->fp, rules->offset); |
1106 | fb->length = cupsFileRead(fb->fp, (char *)fb->buffer, | |
1107 | sizeof(fb->buffer)); | |
1108 | fb->offset = rules->offset; | |
cbf9404a MS |
1109 | |
1110 | DEBUG_printf(("4mime_check_rules: MIME_MAGIC_CONTAINS fb->length=%d", fb->length)); | |
ef416fc2 | 1111 | } |
1112 | ||
1113 | /* | |
1114 | * Compare the buffer against the string. If the file is too | |
1115 | * short then don't compare - it can't match... | |
1116 | */ | |
1117 | ||
4400e98d | 1118 | if ((rules->offset + rules->length) > (fb->offset + fb->length)) |
ef416fc2 | 1119 | result = 0; |
1120 | else | |
1121 | { | |
4400e98d | 1122 | if (fb->length > rules->region) |
ef416fc2 | 1123 | region = rules->region - rules->length; |
1124 | else | |
4400e98d | 1125 | region = fb->length - rules->length; |
ef416fc2 | 1126 | |
1127 | for (n = 0; n < region; n ++) | |
7e86f2f6 | 1128 | if ((result = (memcmp(fb->buffer + rules->offset - fb->offset + n, rules->value.stringv, (size_t)rules->length) == 0)) != 0) |
ef416fc2 | 1129 | break; |
1130 | } | |
1131 | break; | |
1132 | ||
1133 | default : | |
1134 | if (rules->child != NULL) | |
22c9029b | 1135 | result = mime_check_rules(filename, fb, rules->child); |
ef416fc2 | 1136 | else |
1137 | result = 0; | |
1138 | break; | |
1139 | } | |
1140 | ||
1141 | /* | |
1142 | * If the logic is inverted, invert the result... | |
1143 | */ | |
1144 | ||
1145 | if (rules->invert) | |
1146 | result = !result; | |
1147 | ||
1148 | /* | |
1149 | * OK, now if the current logic is OR and this result is true, the this | |
1150 | * rule set is true. If the current logic is AND and this result is false, | |
1151 | * the the rule set is false... | |
1152 | */ | |
1153 | ||
22c9029b | 1154 | DEBUG_printf(("5mime_check_rules: result of test %p (MIME_MAGIC_%s) is %d", |
f11a948a | 1155 | rules, debug_ops[rules->op], result)); |
ef416fc2 | 1156 | |
1157 | if ((result && logic == MIME_MAGIC_OR) || | |
1158 | (!result && logic == MIME_MAGIC_AND)) | |
1159 | return (result); | |
1160 | ||
1161 | /* | |
1162 | * Otherwise the jury is still out on this one, so move to the next rule. | |
1163 | */ | |
1164 | ||
1165 | rules = rules->next; | |
1166 | } | |
1167 | ||
1168 | return (result); | |
1169 | } | |
1170 | ||
1171 | ||
1172 | /* | |
22c9029b | 1173 | * 'mime_patmatch()' - Pattern matching. |
ef416fc2 | 1174 | */ |
1175 | ||
22c9029b MS |
1176 | static int /* O - 1 if match, 0 if no match */ |
1177 | mime_patmatch(const char *s, /* I - String to match against */ | |
1178 | const char *pat) /* I - Pattern to match against */ | |
ef416fc2 | 1179 | { |
1180 | /* | |
1181 | * Range check the input... | |
1182 | */ | |
1183 | ||
1184 | if (s == NULL || pat == NULL) | |
1185 | return (0); | |
1186 | ||
1187 | /* | |
1188 | * Loop through the pattern and match strings, and stop if we come to a | |
1189 | * point where the strings don't match or we find a complete match. | |
1190 | */ | |
1191 | ||
1192 | while (*s != '\0' && *pat != '\0') | |
1193 | { | |
1194 | if (*pat == '*') | |
1195 | { | |
1196 | /* | |
1197 | * Wildcard - 0 or more characters... | |
1198 | */ | |
1199 | ||
1200 | pat ++; | |
1201 | if (*pat == '\0') | |
4400e98d | 1202 | return (1); /* Last pattern char is *, so everything matches... */ |
ef416fc2 | 1203 | |
1204 | /* | |
1205 | * Test all remaining combinations until we get to the end of the string. | |
1206 | */ | |
1207 | ||
1208 | while (*s != '\0') | |
1209 | { | |
22c9029b | 1210 | if (mime_patmatch(s, pat)) |
ef416fc2 | 1211 | return (1); |
1212 | ||
1213 | s ++; | |
1214 | } | |
1215 | } | |
1216 | else if (*pat == '?') | |
1217 | { | |
1218 | /* | |
1219 | * Wildcard - 1 character... | |
1220 | */ | |
1221 | ||
1222 | pat ++; | |
1223 | s ++; | |
1224 | continue; | |
1225 | } | |
1226 | else if (*pat == '[') | |
1227 | { | |
1228 | /* | |
1229 | * Match a character from the input set [chars]... | |
1230 | */ | |
1231 | ||
1232 | pat ++; | |
1233 | while (*pat != ']' && *pat != '\0') | |
1234 | if (*s == *pat) | |
1235 | break; | |
1236 | else | |
1237 | pat ++; | |
1238 | ||
1239 | if (*pat == ']' || *pat == '\0') | |
1240 | return (0); | |
1241 | ||
1242 | while (*pat != ']' && *pat != '\0') | |
1243 | pat ++; | |
1244 | ||
1245 | if (*pat == ']') | |
1246 | pat ++; | |
1247 | ||
1248 | continue; | |
1249 | } | |
1250 | else if (*pat == '\\') | |
1251 | { | |
1252 | /* | |
1253 | * Handle quoted characters... | |
1254 | */ | |
1255 | ||
1256 | pat ++; | |
1257 | } | |
1258 | ||
1259 | /* | |
1260 | * Stop if the pattern and string don't match... | |
1261 | */ | |
1262 | ||
1263 | if (*pat++ != *s++) | |
1264 | return (0); | |
1265 | } | |
1266 | ||
1267 | /* | |
4400e98d | 1268 | * Done parsing the pattern and string; return 1 if the last character |
1269 | * matches and 0 otherwise... | |
ef416fc2 | 1270 | */ |
1271 | ||
1272 | return (*s == *pat); | |
1273 | } |