D-Bus: dbus-marshal-validate.c Source File

D-Bus 1.14.10

dbus-marshal-validate.c
1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-marshal-validate.c Validation routines for marshaled data
3 *
4 * Copyright (C) 2005 Red Hat, Inc.
5 *
6 * Licensed under the Academic Free License version 2.1
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 *
22 */
23
24#include <config.h>
25#include "dbus-internals.h"
26#include "dbus-marshal-validate.h"
27#include "dbus-marshal-recursive.h"
28#include "dbus-marshal-basic.h"
29#include "dbus-signature.h"
30#include "dbus-string.h"
31
50 DBusValidity
51_dbus_validate_signature_with_reason (const DBusString *type_str,
52 int type_pos,
53 int len)
54{
55 const unsigned char *p;
56 const unsigned char *end;
57 int last;
58 int struct_depth;
59 int array_depth;
60 int dict_entry_depth;
61 DBusValidity result;
62
63 int element_count;
64 DBusList *element_count_stack;
65 char opened_brackets[DBUS_MAXIMUM_TYPE_RECURSION_DEPTH * 2 + 1] = { '\0' };
66 char last_bracket;
67
68 result = DBUS_VALID;
69 element_count_stack = NULL;
70
71 if (!_dbus_list_append (&element_count_stack, _DBUS_INT_TO_POINTER (0)))
72 {
73 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
74 goto out;
75 }
76
77 _dbus_assert (type_str != NULL);
78 _dbus_assert (type_pos < _DBUS_INT32_MAX - len);
79 _dbus_assert (len >= 0);
80 _dbus_assert (type_pos >= 0);
81
82 if (len > DBUS_MAXIMUM_SIGNATURE_LENGTH)
83 {
84 result = DBUS_INVALID_SIGNATURE_TOO_LONG;
85 goto out;
86 }
87
88 p = _dbus_string_get_const_udata_len (type_str, type_pos, 0);
89
90 end = _dbus_string_get_const_udata_len (type_str, type_pos + len, 0);
91 struct_depth = 0;
92 array_depth = 0;
93 dict_entry_depth = 0;
94 last = DBUS_TYPE_INVALID;
95
96 while (p != end)
97 {
98 _dbus_assert (struct_depth + dict_entry_depth >= 0);
99 _dbus_assert (struct_depth + dict_entry_depth < _DBUS_N_ELEMENTS (opened_brackets));
100 _dbus_assert (opened_brackets[struct_depth + dict_entry_depth] == '\0');
101
102 switch (*p)
103 {
104 case DBUS_TYPE_BYTE:
105 case DBUS_TYPE_BOOLEAN:
106 case DBUS_TYPE_INT16:
107 case DBUS_TYPE_UINT16:
108 case DBUS_TYPE_INT32:
109 case DBUS_TYPE_UINT32:
110 case DBUS_TYPE_UNIX_FD:
111 case DBUS_TYPE_INT64:
112 case DBUS_TYPE_UINT64:
113 case DBUS_TYPE_DOUBLE:
114 case DBUS_TYPE_STRING:
115 case DBUS_TYPE_OBJECT_PATH:
116 case DBUS_TYPE_SIGNATURE:
117 case DBUS_TYPE_VARIANT:
118 break;
119
120 case DBUS_TYPE_ARRAY:
121 array_depth += 1;
122 if (array_depth > DBUS_MAXIMUM_TYPE_RECURSION_DEPTH)
123 {
124 result = DBUS_INVALID_EXCEEDED_MAXIMUM_ARRAY_RECURSION;
125 goto out;
126 }
127 break;
128
129 case DBUS_STRUCT_BEGIN_CHAR:
130 struct_depth += 1;
131
132 if (struct_depth > DBUS_MAXIMUM_TYPE_RECURSION_DEPTH)
133 {
134 result = DBUS_INVALID_EXCEEDED_MAXIMUM_STRUCT_RECURSION;
135 goto out;
136 }
137
138 if (!_dbus_list_append (&element_count_stack,
139 _DBUS_INT_TO_POINTER (0)))
140 {
141 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
142 goto out;
143 }
144
145 _dbus_assert (struct_depth + dict_entry_depth >= 1);
146 _dbus_assert (struct_depth + dict_entry_depth < _DBUS_N_ELEMENTS (opened_brackets));
147 _dbus_assert (opened_brackets[struct_depth + dict_entry_depth - 1] == '\0');
148 opened_brackets[struct_depth + dict_entry_depth - 1] = DBUS_STRUCT_BEGIN_CHAR;
149 break;
150
151 case DBUS_STRUCT_END_CHAR:
152 if (struct_depth == 0)
153 {
154 result = DBUS_INVALID_STRUCT_ENDED_BUT_NOT_STARTED;
155 goto out;
156 }
157
158 if (last == DBUS_STRUCT_BEGIN_CHAR)
159 {
160 result = DBUS_INVALID_STRUCT_HAS_NO_FIELDS;
161 goto out;
162 }
163
164 _dbus_assert (struct_depth + dict_entry_depth >= 1);
165 _dbus_assert (struct_depth + dict_entry_depth < _DBUS_N_ELEMENTS (opened_brackets));
166 last_bracket = opened_brackets[struct_depth + dict_entry_depth - 1];
167
168 if (last_bracket != DBUS_STRUCT_BEGIN_CHAR)
169 {
170 result = DBUS_INVALID_STRUCT_ENDED_BUT_NOT_STARTED;
171 goto out;
172 }
173
174 _dbus_list_pop_last (&element_count_stack);
175
176 struct_depth -= 1;
177 opened_brackets[struct_depth + dict_entry_depth] = '\0';
178 break;
179
180 case DBUS_DICT_ENTRY_BEGIN_CHAR:
181 if (last != DBUS_TYPE_ARRAY)
182 {
183 result = DBUS_INVALID_DICT_ENTRY_NOT_INSIDE_ARRAY;
184 goto out;
185 }
186
187 dict_entry_depth += 1;
188
189 if (dict_entry_depth > DBUS_MAXIMUM_TYPE_RECURSION_DEPTH)
190 {
191 result = DBUS_INVALID_EXCEEDED_MAXIMUM_DICT_ENTRY_RECURSION;
192 goto out;
193 }
194
195 if (!_dbus_list_append (&element_count_stack,
196 _DBUS_INT_TO_POINTER (0)))
197 {
198 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
199 goto out;
200 }
201
202 _dbus_assert (struct_depth + dict_entry_depth >= 1);
203 _dbus_assert (struct_depth + dict_entry_depth < _DBUS_N_ELEMENTS (opened_brackets));
204 _dbus_assert (opened_brackets[struct_depth + dict_entry_depth - 1] == '\0');
205 opened_brackets[struct_depth + dict_entry_depth - 1] = DBUS_DICT_ENTRY_BEGIN_CHAR;
206 break;
207
208 case DBUS_DICT_ENTRY_END_CHAR:
209 if (dict_entry_depth == 0)
210 {
211 result = DBUS_INVALID_DICT_ENTRY_ENDED_BUT_NOT_STARTED;
212 goto out;
213 }
214
215 _dbus_assert (struct_depth + dict_entry_depth >= 1);
216 _dbus_assert (struct_depth + dict_entry_depth < _DBUS_N_ELEMENTS (opened_brackets));
217 last_bracket = opened_brackets[struct_depth + dict_entry_depth - 1];
218
219 if (last_bracket != DBUS_DICT_ENTRY_BEGIN_CHAR)
220 {
221 result = DBUS_INVALID_DICT_ENTRY_ENDED_BUT_NOT_STARTED;
222 goto out;
223 }
224
225 dict_entry_depth -= 1;
226 opened_brackets[struct_depth + dict_entry_depth] = '\0';
227
228 element_count =
229 _DBUS_POINTER_TO_INT (_dbus_list_pop_last (&element_count_stack));
230
231 if (element_count != 2)
232 {
233 if (element_count == 0)
234 result = DBUS_INVALID_DICT_ENTRY_HAS_NO_FIELDS;
235 else if (element_count == 1)
236 result = DBUS_INVALID_DICT_ENTRY_HAS_ONLY_ONE_FIELD;
237 else
238 result = DBUS_INVALID_DICT_ENTRY_HAS_TOO_MANY_FIELDS;
239
240 goto out;
241 }
242 break;
243
244 case DBUS_TYPE_STRUCT: /* doesn't appear in signatures */
245 case DBUS_TYPE_DICT_ENTRY: /* ditto */
246 default:
247 result = DBUS_INVALID_UNKNOWN_TYPECODE;
248 goto out;
249 }
250
251 if (*p != DBUS_TYPE_ARRAY &&
252 *p != DBUS_DICT_ENTRY_BEGIN_CHAR &&
253 *p != DBUS_STRUCT_BEGIN_CHAR)
254 {
255 element_count =
256 _DBUS_POINTER_TO_INT (_dbus_list_pop_last (&element_count_stack));
257
258 ++element_count;
259
260 if (!_dbus_list_append (&element_count_stack,
261 _DBUS_INT_TO_POINTER (element_count)))
262 {
263 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
264 goto out;
265 }
266 }
267
268 if (array_depth > 0)
269 {
270 if (*p == DBUS_TYPE_ARRAY && p != end)
271 {
272 const unsigned char *p1;
273 p1 = p + 1;
274 if (*p1 == DBUS_STRUCT_END_CHAR ||
275 *p1 == DBUS_DICT_ENTRY_END_CHAR)
276 {
277 result = DBUS_INVALID_MISSING_ARRAY_ELEMENT_TYPE;
278 goto out;
279 }
280 }
281 else
282 {
283 array_depth = 0;
284 }
285 }
286
287 if (last == DBUS_DICT_ENTRY_BEGIN_CHAR)
288 {
289 if (!(dbus_type_is_valid (*p) && dbus_type_is_basic (*p)))
290 {
291 result = DBUS_INVALID_DICT_KEY_MUST_BE_BASIC_TYPE;
292 goto out;
293 }
294 }
295
296 last = *p;
297 ++p;
298 }
299
300
301 if (array_depth > 0)
302 {
303 result = DBUS_INVALID_MISSING_ARRAY_ELEMENT_TYPE;
304 goto out;
305 }
306
307 if (struct_depth > 0)
308 {
309 result = DBUS_INVALID_STRUCT_STARTED_BUT_NOT_ENDED;
310 goto out;
311 }
312
313 if (dict_entry_depth > 0)
314 {
315 result = DBUS_INVALID_DICT_ENTRY_STARTED_BUT_NOT_ENDED;
316 goto out;
317 }
318
319 _dbus_assert (last != DBUS_TYPE_ARRAY);
320 _dbus_assert (last != DBUS_STRUCT_BEGIN_CHAR);
321 _dbus_assert (last != DBUS_DICT_ENTRY_BEGIN_CHAR);
322
323 result = DBUS_VALID;
324
325out:
326 _dbus_list_clear (&element_count_stack);
327 return result;
328}
329
330/* note: this function is also used to validate the header's values,
331 * since the header is a valid body with a particular signature.
332 */
333static DBusValidity
334validate_body_helper (DBusTypeReader *reader,
335 int byte_order,
336 dbus_bool_t walk_reader_to_end,
337 int total_depth,
338 const unsigned char *p,
339 const unsigned char *end,
340 const unsigned char **new_p)
341{
342 int current_type;
343
344 /* The spec allows arrays and structs to each nest 32, for total
345 * nesting of 2*32. We want to impose the same limit on "dynamic"
346 * value nesting (not visible in the signature) which is introduced
347 * by DBUS_TYPE_VARIANT.
348 */
349 if (total_depth > (DBUS_MAXIMUM_TYPE_RECURSION_DEPTH * 2))
350 {
351 return DBUS_INVALID_NESTED_TOO_DEEPLY;
352 }
353
354 while ((current_type = _dbus_type_reader_get_current_type (reader)) != DBUS_TYPE_INVALID)
355 {
356 const unsigned char *a;
357 int alignment;
358
359#if 0
360 _dbus_verbose (" validating value of type %s type reader %p type_pos %d p %p end %p %d remain\n",
361 _dbus_type_to_string (current_type), reader, reader->type_pos, p, end,
362 (int) (end - p));
363#endif
364
365 /* Guarantee that p has one byte to look at */
366 if (p == end)
367 return DBUS_INVALID_NOT_ENOUGH_DATA;
368
369 switch (current_type)
370 {
371 case DBUS_TYPE_BYTE:
372 ++p;
373 break;
374
375 case DBUS_TYPE_BOOLEAN:
376 case DBUS_TYPE_INT16:
377 case DBUS_TYPE_UINT16:
378 case DBUS_TYPE_INT32:
379 case DBUS_TYPE_UINT32:
380 case DBUS_TYPE_UNIX_FD:
381 case DBUS_TYPE_INT64:
382 case DBUS_TYPE_UINT64:
383 case DBUS_TYPE_DOUBLE:
384 alignment = _dbus_type_get_alignment (current_type);
385 a = _DBUS_ALIGN_ADDRESS (p, alignment);
386 if (a >= end)
387 return DBUS_INVALID_NOT_ENOUGH_DATA;
388 while (p != a)
389 {
390 if (*p != '\0')
391 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
392 ++p;
393 }
394
395 if (current_type == DBUS_TYPE_BOOLEAN)
396 {
397 dbus_uint32_t v;
398
399 if (p + 4 > end)
400 return DBUS_INVALID_NOT_ENOUGH_DATA;
401
402 v = _dbus_unpack_uint32 (byte_order, p);
403
404 if (!(v == 0 || v == 1))
405 return DBUS_INVALID_BOOLEAN_NOT_ZERO_OR_ONE;
406 }
407
408 p += alignment;
409 break;
410
411 case DBUS_TYPE_ARRAY:
412 case DBUS_TYPE_STRING:
413 case DBUS_TYPE_OBJECT_PATH:
414 {
415 dbus_uint32_t claimed_len;
416
417 a = _DBUS_ALIGN_ADDRESS (p, 4);
418 if (a + 4 > end)
419 return DBUS_INVALID_NOT_ENOUGH_DATA;
420 while (p != a)
421 {
422 if (*p != '\0')
423 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
424 ++p;
425 }
426
427 claimed_len = _dbus_unpack_uint32 (byte_order, p);
428 p += 4;
429
430 /* p may now be == end */
431 _dbus_assert (p <= end);
432
433 if (current_type == DBUS_TYPE_ARRAY)
434 {
435 int array_elem_type = _dbus_type_reader_get_element_type (reader);
436
437 if (!dbus_type_is_valid (array_elem_type))
438 {
439 return DBUS_INVALID_UNKNOWN_TYPECODE;
440 }
441
442 alignment = _dbus_type_get_alignment (array_elem_type);
443
444 a = _DBUS_ALIGN_ADDRESS (p, alignment);
445
446 /* a may now be == end */
447 if (a > end)
448 return DBUS_INVALID_NOT_ENOUGH_DATA;
449
450 while (p != a)
451 {
452 if (*p != '\0')
453 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
454 ++p;
455 }
456 }
457
458 if (claimed_len > (unsigned long) (end - p))
459 return DBUS_INVALID_LENGTH_OUT_OF_BOUNDS;
460
461 if (current_type == DBUS_TYPE_OBJECT_PATH)
462 {
463 DBusString str;
464 _dbus_string_init_const_len (&str, (const char *) p, claimed_len);
465 if (!_dbus_validate_path (&str, 0,
466 _dbus_string_get_length (&str)))
467 return DBUS_INVALID_BAD_PATH;
468
469 p += claimed_len;
470 }
471 else if (current_type == DBUS_TYPE_STRING)
472 {
473 DBusString str;
474 _dbus_string_init_const_len (&str, (const char *) p, claimed_len);
475 if (!_dbus_string_validate_utf8 (&str, 0,
476 _dbus_string_get_length (&str)))
477 return DBUS_INVALID_BAD_UTF8_IN_STRING;
478
479 p += claimed_len;
480 }
481 else if (current_type == DBUS_TYPE_ARRAY && claimed_len > 0)
482 {
483 DBusTypeReader sub;
484 DBusValidity validity;
485 const unsigned char *array_end;
486 int array_elem_type;
487
488 if (claimed_len > DBUS_MAXIMUM_ARRAY_LENGTH)
489 return DBUS_INVALID_ARRAY_LENGTH_EXCEEDS_MAXIMUM;
490
491 /* Remember that the reader is types only, so we can't
492 * use it to iterate over elements. It stays the same
493 * for all elements.
494 */
495 _dbus_type_reader_recurse (reader, &sub);
496
497 array_end = p + claimed_len;
498
499 array_elem_type = _dbus_type_reader_get_element_type (reader);
500
501 /* avoid recursive call to validate_body_helper if this is an array
502 * of fixed-size elements
503 */
504 if (dbus_type_is_fixed (array_elem_type))
505 {
506 /* Note that fixed-size types all have sizes equal to
507 * their alignments, so this is really the item size. */
508 alignment = _dbus_type_get_alignment (array_elem_type);
509 _dbus_assert (alignment == 1 || alignment == 2 ||
510 alignment == 4 || alignment == 8);
511
512 /* Because the alignment is a power of 2, this is
513 * equivalent to: (claimed_len % alignment) != 0,
514 * but avoids slower integer division */
515 if ((claimed_len & (alignment - 1)) != 0)
516 return DBUS_INVALID_ARRAY_LENGTH_INCORRECT;
517
518 /* bools need to be handled differently, because they can
519 * have an invalid value
520 */
521 if (array_elem_type == DBUS_TYPE_BOOLEAN)
522 {
523 dbus_uint32_t v;
524
525 while (p < array_end)
526 {
527 v = _dbus_unpack_uint32 (byte_order, p);
528
529 if (!(v == 0 || v == 1))
530 return DBUS_INVALID_BOOLEAN_NOT_ZERO_OR_ONE;
531
532 p += alignment;
533 }
534 }
535
536 else
537 {
538 p = array_end;
539 }
540 }
541
542 else
543 {
544 while (p < array_end)
545 {
546 validity = validate_body_helper (&sub, byte_order, FALSE,
547 total_depth + 1,
548 p, end, &p);
549 if (validity != DBUS_VALID)
550 return validity;
551 }
552 }
553
554 if (p != array_end)
555 return DBUS_INVALID_ARRAY_LENGTH_INCORRECT;
556 }
557
558 /* check nul termination */
559 if (current_type != DBUS_TYPE_ARRAY)
560 {
561 if (p == end)
562 return DBUS_INVALID_NOT_ENOUGH_DATA;
563
564 if (*p != '\0')
565 return DBUS_INVALID_STRING_MISSING_NUL;
566 ++p;
567 }
568 }
569 break;
570
571 case DBUS_TYPE_SIGNATURE:
572 {
573 dbus_uint32_t claimed_len;
574 DBusString str;
575 DBusValidity validity;
576
577 claimed_len = *p;
578 ++p;
579
580 /* 1 is for nul termination */
581 if (claimed_len + 1 > (unsigned long) (end - p))
582 return DBUS_INVALID_SIGNATURE_LENGTH_OUT_OF_BOUNDS;
583
584 _dbus_string_init_const_len (&str, (const char *) p, claimed_len);
585 validity =
586 _dbus_validate_signature_with_reason (&str, 0,
587 _dbus_string_get_length (&str));
588
589 if (validity != DBUS_VALID)
590 return validity;
591
592 p += claimed_len;
593
594 _dbus_assert (p < end);
595 if (*p != DBUS_TYPE_INVALID)
596 return DBUS_INVALID_SIGNATURE_MISSING_NUL;
597
598 ++p;
599
600 _dbus_verbose ("p = %p end = %p claimed_len %u\n", p, end, claimed_len);
601 }
602 break;
603
604 case DBUS_TYPE_VARIANT:
605 {
606 /* 1 byte sig len, sig typecodes, align to
607 * contained-type-boundary, values.
608 */
609
610 /* In addition to normal signature validation, we need to be sure
611 * the signature contains only a single (possibly container) type.
612 */
613 dbus_uint32_t claimed_len;
614 DBusString sig;
615 DBusTypeReader sub;
616 DBusValidity validity;
617 int contained_alignment;
618 int contained_type;
619 DBusValidity reason;
620
621 claimed_len = *p;
622 ++p;
623
624 /* + 1 for nul */
625 if (claimed_len + 1 > (unsigned long) (end - p))
626 return DBUS_INVALID_VARIANT_SIGNATURE_LENGTH_OUT_OF_BOUNDS;
627
628 _dbus_string_init_const_len (&sig, (const char *) p, claimed_len);
629 reason = _dbus_validate_signature_with_reason (&sig, 0,
630 _dbus_string_get_length (&sig));
631 if (!(reason == DBUS_VALID))
632 {
633 if (reason == DBUS_VALIDITY_UNKNOWN_OOM_ERROR)
634 return reason;
635 else
636 return DBUS_INVALID_VARIANT_SIGNATURE_BAD;
637 }
638
639 p += claimed_len;
640
641 if (*p != DBUS_TYPE_INVALID)
642 return DBUS_INVALID_VARIANT_SIGNATURE_MISSING_NUL;
643 ++p;
644
645 contained_type = _dbus_first_type_in_signature (&sig, 0);
646 if (contained_type == DBUS_TYPE_INVALID)
647 return DBUS_INVALID_VARIANT_SIGNATURE_EMPTY;
648
649 contained_alignment = _dbus_type_get_alignment (contained_type);
650
651 a = _DBUS_ALIGN_ADDRESS (p, contained_alignment);
652 if (a > end)
653 return DBUS_INVALID_NOT_ENOUGH_DATA;
654 while (p != a)
655 {
656 if (*p != '\0')
657 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
658 ++p;
659 }
660
661 _dbus_type_reader_init_types_only (&sub, &sig, 0);
662
663 _dbus_assert (_dbus_type_reader_get_current_type (&sub) != DBUS_TYPE_INVALID);
664
665 validity = validate_body_helper (&sub, byte_order, FALSE,
666 total_depth + 1,
667 p, end, &p);
668 if (validity != DBUS_VALID)
669 return validity;
670
671 if (_dbus_type_reader_next (&sub))
672 return DBUS_INVALID_VARIANT_SIGNATURE_SPECIFIES_MULTIPLE_VALUES;
673
674 _dbus_assert (_dbus_type_reader_get_current_type (&sub) == DBUS_TYPE_INVALID);
675 }
676 break;
677
678 case DBUS_TYPE_DICT_ENTRY:
679 case DBUS_TYPE_STRUCT:
680 {
681 DBusTypeReader sub;
682 DBusValidity validity;
683
684 a = _DBUS_ALIGN_ADDRESS (p, 8);
685 if (a > end)
686 return DBUS_INVALID_NOT_ENOUGH_DATA;
687 while (p != a)
688 {
689 if (*p != '\0')
690 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
691 ++p;
692 }
693
694 _dbus_type_reader_recurse (reader, &sub);
695
696 validity = validate_body_helper (&sub, byte_order, TRUE,
697 total_depth + 1,
698 p, end, &p);
699 if (validity != DBUS_VALID)
700 return validity;
701 }
702 break;
703
704 default:
705 _dbus_assert_not_reached ("invalid typecode in supposedly-validated signature");
706 break;
707 }
708
709#if 0
710 _dbus_verbose (" validated value of type %s type reader %p type_pos %d p %p end %p %d remain\n",
711 _dbus_type_to_string (current_type), reader, reader->type_pos, p, end,
712 (int) (end - p));
713#endif
714
715 if (p > end)
716 {
717 _dbus_verbose ("not enough data!!! p = %p end = %p end-p = %d\n",
718 p, end, (int) (end - p));
719 return DBUS_INVALID_NOT_ENOUGH_DATA;
720 }
721
722 if (walk_reader_to_end)
723 _dbus_type_reader_next (reader);
724 else
725 break;
726 }
727
728 if (new_p)
729 *new_p = p;
730
731 return DBUS_VALID;
732}
733
754 DBusValidity
755_dbus_validate_body_with_reason (const DBusString *expected_signature,
756 int expected_signature_start,
757 int byte_order,
758 int *bytes_remaining,
759 const DBusString *value_str,
760 int value_pos,
761 int len)
762{
763 DBusTypeReader reader;
764 const unsigned char *p;
765 const unsigned char *end;
766 DBusValidity validity;
767
768 _dbus_assert (len >= 0);
769 _dbus_assert (value_pos >= 0);
770 _dbus_assert (value_pos <= _dbus_string_get_length (value_str) - len);
771
772 _dbus_verbose ("validating body from pos %d len %d sig '%s'\n",
773 value_pos, len, _dbus_string_get_const_data_len (expected_signature,
774 expected_signature_start,
775 0));
776
777 _dbus_type_reader_init_types_only (&reader,
778 expected_signature, expected_signature_start);
779
780 p = _dbus_string_get_const_udata_len (value_str, value_pos, len);
781 end = p + len;
782
783 validity = validate_body_helper (&reader, byte_order, TRUE, 0, p, end, &p);
784 if (validity != DBUS_VALID)
785 return validity;
786
787 if (bytes_remaining)
788 {
789 *bytes_remaining = end - p;
790 return DBUS_VALID;
791 }
792 else if (p < end)
793 return DBUS_INVALID_TOO_MUCH_DATA;
794 else
795 {
796 _dbus_assert (p == end);
797 return DBUS_VALID;
798 }
799}
800
805#define VALID_INITIAL_NAME_CHARACTER(c) \
806 ( ((c) >= 'A' && (c) <= 'Z') || \
807 ((c) >= 'a' && (c) <= 'z') || \
808 ((c) == '_') )
809
814#define VALID_NAME_CHARACTER(c) \
815 ( ((c) >= '0' && (c) <= '9') || \
816 ((c) >= 'A' && (c) <= 'Z') || \
817 ((c) >= 'a' && (c) <= 'z') || \
818 ((c) == '_') )
819
836dbus_bool_t
837_dbus_validate_path (const DBusString *str,
838 int start,
839 int len)
840{
841 const unsigned char *s;
842 const unsigned char *end;
843 const unsigned char *last_slash;
844
845 _dbus_assert (start >= 0);
846 _dbus_assert (len >= 0);
847 _dbus_assert (start <= _dbus_string_get_length (str));
848
849 if (len > _dbus_string_get_length (str) - start)
850 return FALSE;
851
852 if (len == 0)
853 return FALSE;
854
855 s = _dbus_string_get_const_udata (str) + start;
856 end = s + len;
857
858 if (*s != '/')
859 return FALSE;
860 last_slash = s;
861 ++s;
862
863 while (s != end)
864 {
865 if (*s == '/')
866 {
867 if ((s - last_slash) < 2)
868 return FALSE; /* no empty path components allowed */
869
870 last_slash = s;
871 }
872 else
873 {
874 if (_DBUS_UNLIKELY (!VALID_NAME_CHARACTER (*s)))
875 return FALSE;
876 }
877
878 ++s;
879 }
880
881 if ((end - last_slash) < 2 &&
882 len > 1)
883 return FALSE; /* trailing slash not allowed unless the string is "/" */
884
885 return TRUE;
886}
887
888const char *
889_dbus_validity_to_error_message (DBusValidity validity)
890{
891 switch (validity)
892 {
893 case DBUS_VALIDITY_UNKNOWN_OOM_ERROR: return "Out of memory";
894 case DBUS_INVALID_FOR_UNKNOWN_REASON: return "Unknown reason";
895 case DBUS_VALID_BUT_INCOMPLETE: return "Valid but incomplete";
896 case DBUS_VALIDITY_UNKNOWN: return "Validity unknown";
897 case DBUS_VALID: return "Valid";
898 case DBUS_INVALID_UNKNOWN_TYPECODE: return "Unknown typecode";
899 case DBUS_INVALID_MISSING_ARRAY_ELEMENT_TYPE: return "Missing array element type";
900 case DBUS_INVALID_SIGNATURE_TOO_LONG: return "Signature is too long";
901 case DBUS_INVALID_EXCEEDED_MAXIMUM_ARRAY_RECURSION: return "Exceeded maximum array recursion";
902 case DBUS_INVALID_EXCEEDED_MAXIMUM_STRUCT_RECURSION: return "Exceeded maximum struct recursion";
903 case DBUS_INVALID_STRUCT_ENDED_BUT_NOT_STARTED: return "Struct ended but not started";
904 case DBUS_INVALID_STRUCT_STARTED_BUT_NOT_ENDED: return "Struct started but not ended";
905 case DBUS_INVALID_STRUCT_HAS_NO_FIELDS: return "Struct has no fields";
906 case DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL: return "Alignment padding not null";
907 case DBUS_INVALID_BOOLEAN_NOT_ZERO_OR_ONE: return "Boolean is not zero or one";
908 case DBUS_INVALID_NOT_ENOUGH_DATA: return "Not enough data";
909 case DBUS_INVALID_TOO_MUCH_DATA: return "Too much data";
910 case DBUS_INVALID_BAD_BYTE_ORDER: return "Bad byte order";
911 case DBUS_INVALID_BAD_PROTOCOL_VERSION: return "Bad protocol version";
912 case DBUS_INVALID_BAD_MESSAGE_TYPE: return "Bad message type";
913 case DBUS_INVALID_BAD_SERIAL: return "Bad serial";
914 case DBUS_INVALID_INSANE_FIELDS_ARRAY_LENGTH: return "Insane fields array length";
915 case DBUS_INVALID_INSANE_BODY_LENGTH: return "Insane body length";
916 case DBUS_INVALID_MESSAGE_TOO_LONG: return "Message too long";
917 case DBUS_INVALID_HEADER_FIELD_CODE: return "Header field code";
918 case DBUS_INVALID_HEADER_FIELD_HAS_WRONG_TYPE: return "Header field has wrong type";
919 case DBUS_INVALID_USES_LOCAL_INTERFACE: return "Uses local interface";
920 case DBUS_INVALID_USES_LOCAL_PATH: return "Uses local path";
921 case DBUS_INVALID_HEADER_FIELD_APPEARS_TWICE: return "Header field appears twice";
922 case DBUS_INVALID_BAD_DESTINATION: return "Bad destination";
923 case DBUS_INVALID_BAD_INTERFACE: return "Bad interface";
924 case DBUS_INVALID_BAD_MEMBER: return "Bad member";
925 case DBUS_INVALID_BAD_ERROR_NAME: return "Bad error name";
926 case DBUS_INVALID_BAD_SENDER: return "Bad sender";
927 case DBUS_INVALID_MISSING_PATH: return "Missing path";
928 case DBUS_INVALID_MISSING_INTERFACE: return "Missing interface";
929 case DBUS_INVALID_MISSING_MEMBER: return "Missing member";
930 case DBUS_INVALID_MISSING_ERROR_NAME: return "Missing error name";
931 case DBUS_INVALID_MISSING_REPLY_SERIAL: return "Missing reply serial";
932 case DBUS_INVALID_LENGTH_OUT_OF_BOUNDS: return "Length out of bounds";
933 case DBUS_INVALID_ARRAY_LENGTH_EXCEEDS_MAXIMUM: return "Array length exceeds maximum";
934 case DBUS_INVALID_BAD_PATH: return "Bad path";
935 case DBUS_INVALID_SIGNATURE_LENGTH_OUT_OF_BOUNDS: return "Signature length out of bounds";
936 case DBUS_INVALID_BAD_UTF8_IN_STRING: return "Bad utf8 in string";
937 case DBUS_INVALID_ARRAY_LENGTH_INCORRECT: return "Array length incorrect";
938 case DBUS_INVALID_VARIANT_SIGNATURE_LENGTH_OUT_OF_BOUNDS: return "Variant signature length out of bounds";
939 case DBUS_INVALID_VARIANT_SIGNATURE_BAD: return "Variant signature bad";
940 case DBUS_INVALID_VARIANT_SIGNATURE_EMPTY: return "Variant signature empty";
941 case DBUS_INVALID_VARIANT_SIGNATURE_SPECIFIES_MULTIPLE_VALUES: return "Variant signature specifies multiple values";
942 case DBUS_INVALID_VARIANT_SIGNATURE_MISSING_NUL: return "Variant signature missing nul";
943 case DBUS_INVALID_STRING_MISSING_NUL: return "String missing nul";
944 case DBUS_INVALID_SIGNATURE_MISSING_NUL: return "Signature missing nul";
945 case DBUS_INVALID_EXCEEDED_MAXIMUM_DICT_ENTRY_RECURSION: return "Exceeded maximum dict entry recursion";
946 case DBUS_INVALID_DICT_ENTRY_ENDED_BUT_NOT_STARTED: return "Dict entry ended but not started";
947 case DBUS_INVALID_DICT_ENTRY_STARTED_BUT_NOT_ENDED: return "Dict entry started but not ended";
948 case DBUS_INVALID_DICT_ENTRY_HAS_NO_FIELDS: return "Dict entry has no fields";
949 case DBUS_INVALID_DICT_ENTRY_HAS_ONLY_ONE_FIELD: return "Dict entry has only one field";
950 case DBUS_INVALID_DICT_ENTRY_HAS_TOO_MANY_FIELDS: return "Dict entry has too many fields";
951 case DBUS_INVALID_DICT_ENTRY_NOT_INSIDE_ARRAY: return "Dict entry not inside array";
952 case DBUS_INVALID_DICT_KEY_MUST_BE_BASIC_TYPE: return "Dict key must be basic type";
953 case DBUS_INVALID_MISSING_UNIX_FDS: return "Unix file descriptor missing";
954 case DBUS_INVALID_NESTED_TOO_DEEPLY: return "Variants cannot be used to create a hugely recursive tree of values";
955 case DBUS_VALIDITY_LAST:
956 default:
957 return "Invalid";
958 }
959}
960
974dbus_bool_t
975_dbus_validate_interface (const DBusString *str,
976 int start,
977 int len)
978{
979 const unsigned char *s;
980 const unsigned char *end;
981 const unsigned char *iface;
982 const unsigned char *last_dot;
983
984 _dbus_assert (start >= 0);
985 _dbus_assert (len >= 0);
986 _dbus_assert (start <= _dbus_string_get_length (str));
987
988 if (len > _dbus_string_get_length (str) - start)
989 return FALSE;
990
991 if (len > DBUS_MAXIMUM_NAME_LENGTH)
992 return FALSE;
993
994 if (len == 0)
995 return FALSE;
996
997 last_dot = NULL;
998 iface = _dbus_string_get_const_udata (str) + start;
999 end = iface + len;
1000 s = iface;
1001
1002 /* check special cases of first char so it doesn't have to be done
1003 * in the loop. Note we know len > 0
1004 */
1005 if (_DBUS_UNLIKELY (*s == '.')) /* disallow starting with a . */
1006 return FALSE;
1007 else if (_DBUS_UNLIKELY (!VALID_INITIAL_NAME_CHARACTER (*s)))
1008 return FALSE;
1009 else
1010 ++s;
1011
1012 while (s != end)
1013 {
1014 if (*s == '.')
1015 {
1016 if (_DBUS_UNLIKELY ((s + 1) == end))
1017 return FALSE;
1018 else if (_DBUS_UNLIKELY (!VALID_INITIAL_NAME_CHARACTER (*(s + 1))))
1019 return FALSE;
1020 last_dot = s;
1021 ++s; /* we just validated the next char, so skip two */
1022 }
1023 else if (_DBUS_UNLIKELY (!VALID_NAME_CHARACTER (*s)))
1024 {
1025 return FALSE;
1026 }
1027
1028 ++s;
1029 }
1030
1031 if (_DBUS_UNLIKELY (last_dot == NULL))
1032 return FALSE;
1033
1034 return TRUE;
1035}
1036
1050dbus_bool_t
1051_dbus_validate_member (const DBusString *str,
1052 int start,
1053 int len)
1054{
1055 const unsigned char *s;
1056 const unsigned char *end;
1057 const unsigned char *member;
1058
1059 _dbus_assert (start >= 0);
1060 _dbus_assert (len >= 0);
1061 _dbus_assert (start <= _dbus_string_get_length (str));
1062
1063 if (len > _dbus_string_get_length (str) - start)
1064 return FALSE;
1065
1066 if (len > DBUS_MAXIMUM_NAME_LENGTH)
1067 return FALSE;
1068
1069 if (len == 0)
1070 return FALSE;
1071
1072 member = _dbus_string_get_const_udata (str) + start;
1073 end = member + len;
1074 s = member;
1075
1076 /* check special cases of first char so it doesn't have to be done
1077 * in the loop. Note we know len > 0
1078 */
1079
1080 if (_DBUS_UNLIKELY (!VALID_INITIAL_NAME_CHARACTER (*s)))
1081 return FALSE;
1082 else
1083 ++s;
1084
1085 while (s != end)
1086 {
1087 if (_DBUS_UNLIKELY (!VALID_NAME_CHARACTER (*s)))
1088 {
1089 return FALSE;
1090 }
1091
1092 ++s;
1093 }
1094
1095 return TRUE;
1096}
1097
1111dbus_bool_t
1112_dbus_validate_error_name (const DBusString *str,
1113 int start,
1114 int len)
1115{
1116 /* Same restrictions as interface name at the moment */
1117 return _dbus_validate_interface (str, start, len);
1118}
1119
1124#define VALID_INITIAL_BUS_NAME_CHARACTER(c) \
1125 ( ((c) >= 'A' && (c) <= 'Z') || \
1126 ((c) >= 'a' && (c) <= 'z') || \
1127 ((c) == '_') || ((c) == '-'))
1128
1133#define VALID_BUS_NAME_CHARACTER(c) \
1134 ( ((c) >= '0' && (c) <= '9') || \
1135 ((c) >= 'A' && (c) <= 'Z') || \
1136 ((c) >= 'a' && (c) <= 'z') || \
1137 ((c) == '_') || ((c) == '-'))
1138
1139static dbus_bool_t
1140_dbus_validate_bus_name_full (const DBusString *str,
1141 int start,
1142 int len,
1143 dbus_bool_t is_namespace)
1144{
1145 const unsigned char *s;
1146 const unsigned char *end;
1147 const unsigned char *iface;
1148 const unsigned char *last_dot;
1149
1150 _dbus_assert (start >= 0);
1151 _dbus_assert (len >= 0);
1152 _dbus_assert (start <= _dbus_string_get_length (str));
1153
1154 if (len > _dbus_string_get_length (str) - start)
1155 return FALSE;
1156
1157 if (len > DBUS_MAXIMUM_NAME_LENGTH)
1158 return FALSE;
1159
1160 if (len == 0)
1161 return FALSE;
1162
1163 last_dot = NULL;
1164 iface = _dbus_string_get_const_udata (str) + start;
1165 end = iface + len;
1166 s = iface;
1167
1168 /* check special cases of first char so it doesn't have to be done
1169 * in the loop. Note we know len > 0
1170 */
1171 if (*s == ':')
1172 {
1173 /* unique name */
1174 ++s;
1175 while (s != end)
1176 {
1177 if (*s == '.')
1178 {
1179 if (_DBUS_UNLIKELY ((s + 1) == end))
1180 return FALSE;
1181 if (_DBUS_UNLIKELY (!VALID_BUS_NAME_CHARACTER (*(s + 1))))
1182 return FALSE;
1183 ++s; /* we just validated the next char, so skip two */
1184 }
1185 else if (_DBUS_UNLIKELY (!VALID_BUS_NAME_CHARACTER (*s)))
1186 {
1187 return FALSE;
1188 }
1189
1190 ++s;
1191 }
1192
1193 return TRUE;
1194 }
1195 else if (_DBUS_UNLIKELY (*s == '.')) /* disallow starting with a . */
1196 return FALSE;
1197 else if (_DBUS_UNLIKELY (!VALID_INITIAL_BUS_NAME_CHARACTER (*s)))
1198 return FALSE;
1199 else
1200 ++s;
1201
1202 while (s != end)
1203 {
1204 if (*s == '.')
1205 {
1206 if (_DBUS_UNLIKELY ((s + 1) == end))
1207 return FALSE;
1208 else if (_DBUS_UNLIKELY (!VALID_INITIAL_BUS_NAME_CHARACTER (*(s + 1))))
1209 return FALSE;
1210 last_dot = s;
1211 ++s; /* we just validated the next char, so skip two */
1212 }
1213 else if (_DBUS_UNLIKELY (!VALID_BUS_NAME_CHARACTER (*s)))
1214 {
1215 return FALSE;
1216 }
1217
1218 ++s;
1219 }
1220
1221 if (!is_namespace && _DBUS_UNLIKELY (last_dot == NULL))
1222 return FALSE;
1223
1224 return TRUE;
1225}
1226
1240dbus_bool_t
1241_dbus_validate_bus_name (const DBusString *str,
1242 int start,
1243 int len)
1244{
1245 return _dbus_validate_bus_name_full (str, start, len, FALSE);
1246}
1247
1261dbus_bool_t
1262_dbus_validate_bus_namespace (const DBusString *str,
1263 int start,
1264 int len)
1265{
1266 return _dbus_validate_bus_name_full (str, start, len, TRUE);
1267}
1268
1270 DEFINE_DBUS_NAME_CHECK(path)
1272 DEFINE_DBUS_NAME_CHECK(interface)
1274 DEFINE_DBUS_NAME_CHECK(member)
1276 DEFINE_DBUS_NAME_CHECK(error_name)
1278 DEFINE_DBUS_NAME_CHECK(bus_name)
1280 DEFINE_DBUS_NAME_CHECK(utf8)
1281
1282
1284/* tests in dbus-marshal-validate-util.c */
_DBUS_INT_TO_POINTER
#define _DBUS_INT_TO_POINTER(integer)
Safely stuffs an integer into a pointer, to be extracted later with _DBUS_POINTER_TO_INT.
Definition dbus-internals.h:192
_dbus_assert_not_reached
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
Definition dbus-internals.h:164
_dbus_assert
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
Definition dbus-internals.h:153
_DBUS_POINTER_TO_INT
#define _DBUS_POINTER_TO_INT(pointer)
Safely casts a void* to an integer; should only be used on void* that actually contain integers,...
Definition dbus-internals.h:191
_DBUS_N_ELEMENTS
#define _DBUS_N_ELEMENTS(array)
Computes the number of elements in a fixed-size array using sizeof().
Definition dbus-internals.h:189
_DBUS_INT32_MAX
#define _DBUS_INT32_MAX
Maximum value of type "int32".
Definition dbus-internals.h:307
_dbus_list_pop_last
void * _dbus_list_pop_last(DBusList **list)
Removes the last value in the list and returns it.
Definition dbus-list.c:700
_dbus_list_clear
void _dbus_list_clear(DBusList **list)
Frees all links in the list and sets the list head to NULL.
Definition dbus-list.c:543
_dbus_list_append
dbus_bool_t _dbus_list_append(DBusList **list, void *data)
Appends a value to the list.
Definition dbus-list.c:271
NULL
#define NULL
A null pointer, defined appropriately for C or C++.
Definition dbus-macros.h:49
TRUE
#define TRUE
Expands to "1".
Definition dbus-macros.h:39
FALSE
#define FALSE
Expands to "0".
Definition dbus-macros.h:42
_dbus_type_reader_recurse
void _dbus_type_reader_recurse(DBusTypeReader *reader, DBusTypeReader *sub)
Initialize a new reader pointing to the first type and corresponding value that's a child of the curr...
Definition dbus-marshal-recursive.c:988
DBusValidity
DBusValidity
This is primarily used in unit testing, so we can verify that each invalid message is invalid for the...
Definition dbus-marshal-validate.h:52
_dbus_validate_signature_with_reason
DBusValidity _dbus_validate_signature_with_reason(const DBusString *type_str, int type_pos, int len)
Verifies that the range of type_str from type_pos to type_end is a valid signature.
Definition dbus-marshal-validate.c:51
VALID_NAME_CHARACTER
#define VALID_NAME_CHARACTER(c)
Determine wether the given character is valid as a second or later character in a name.
Definition dbus-marshal-validate.c:814
VALID_INITIAL_BUS_NAME_CHARACTER
#define VALID_INITIAL_BUS_NAME_CHARACTER(c)
Determine wether the given character is valid as the first character in a bus name.
Definition dbus-marshal-validate.c:1124
VALID_BUS_NAME_CHARACTER
#define VALID_BUS_NAME_CHARACTER(c)
Determine wether the given character is valid as a second or later character in a bus name.
Definition dbus-marshal-validate.c:1133
_dbus_type_get_alignment
int _dbus_type_get_alignment(int typecode)
Gets the alignment requirement for the given type; will be 1, 4, or 8.
Definition dbus-marshal-basic.c:1236
DEFINE_DBUS_NAME_CHECK
#define DEFINE_DBUS_NAME_CHECK(what)
Define a name check to be used in _dbus_return_if_fail() statements.
Definition dbus-marshal-validate.h:181
_dbus_type_reader_init_types_only
void _dbus_type_reader_init_types_only(DBusTypeReader *reader, const DBusString *type_str, int type_pos)
Like _dbus_type_reader_init() but the iteration is over the signature, not over values.
Definition dbus-marshal-recursive.c:761
_dbus_validate_error_name
dbus_bool_t _dbus_validate_error_name(const DBusString *str, int start, int len)
Checks that the given range of the string is a valid error name in the D-Bus protocol.
Definition dbus-marshal-validate.c:1112
_dbus_unpack_uint32
dbus_uint32_t _dbus_unpack_uint32(int byte_order, const unsigned char *data)
Unpacks a 32 bit unsigned integer from a data pointer.
Definition dbus-marshal-basic.c:200
_dbus_first_type_in_signature
int _dbus_first_type_in_signature(const DBusString *str, int pos)
Get the first type in the signature.
Definition dbus-marshal-basic.c:1477
_dbus_type_reader_get_element_type
int _dbus_type_reader_get_element_type(const DBusTypeReader *reader)
Gets the type of an element of the array the reader is currently pointing to.
Definition dbus-marshal-recursive.c:821
_dbus_validate_member
dbus_bool_t _dbus_validate_member(const DBusString *str, int start, int len)
Checks that the given range of the string is a valid member name in the D-Bus protocol.
Definition dbus-marshal-validate.c:1051
_dbus_type_reader_next
dbus_bool_t _dbus_type_reader_next(DBusTypeReader *reader)
Skip to the next value on this "level".
Definition dbus-marshal-recursive.c:1054
_dbus_validate_bus_namespace
dbus_bool_t _dbus_validate_bus_namespace(const DBusString *str, int start, int len)
Checks that the given range of the string is a prefix of a valid bus name in the D-Bus protocol.
Definition dbus-marshal-validate.c:1262
VALID_INITIAL_NAME_CHARACTER
#define VALID_INITIAL_NAME_CHARACTER(c)
Determine wether the given character is valid as the first character in a name.
Definition dbus-marshal-validate.c:805
_dbus_validate_path
dbus_bool_t _dbus_validate_path(const DBusString *str, int start, int len)
Checks that the given range of the string is a valid object path name in the D-Bus protocol.
Definition dbus-marshal-validate.c:837
_dbus_validate_interface
dbus_bool_t _dbus_validate_interface(const DBusString *str, int start, int len)
Checks that the given range of the string is a valid interface name in the D-Bus protocol.
Definition dbus-marshal-validate.c:975
_dbus_type_to_string
const char * _dbus_type_to_string(int typecode)
Returns a string describing the given type.
Definition dbus-marshal-basic.c:1282
_dbus_validate_body_with_reason
DBusValidity _dbus_validate_body_with_reason(const DBusString *expected_signature, int expected_signature_start, int byte_order, int *bytes_remaining, const DBusString *value_str, int value_pos, int len)
Verifies that the range of value_str from value_pos to value_end is a legitimate value of type expect...
Definition dbus-marshal-validate.c:755
_dbus_type_reader_get_current_type
int _dbus_type_reader_get_current_type(const DBusTypeReader *reader)
Gets the type of the value the reader is currently pointing to; or for a types-only reader gets the t...
Definition dbus-marshal-recursive.c:786
_dbus_validate_bus_name
dbus_bool_t _dbus_validate_bus_name(const DBusString *str, int start, int len)
Checks that the given range of the string is a valid bus name in the D-Bus protocol.
Definition dbus-marshal-validate.c:1241
DBUS_VALIDITY_UNKNOWN_OOM_ERROR
@ DBUS_VALIDITY_UNKNOWN_OOM_ERROR
can't determine validity due to OOM
Definition dbus-marshal-validate.h:54
DBUS_INVALID_TOO_MUCH_DATA
@ DBUS_INVALID_TOO_MUCH_DATA
trailing junk makes it invalid
Definition dbus-marshal-validate.h:72
DBUS_VALID
@ DBUS_VALID
the data is valid
Definition dbus-marshal-validate.h:58
DBUS_TYPE_SIGNATURE
#define DBUS_TYPE_SIGNATURE
Type code marking a D-Bus type signature.
Definition dbus-protocol.h:110
DBUS_MAXIMUM_SIGNATURE_LENGTH
#define DBUS_MAXIMUM_SIGNATURE_LENGTH
This one is 255 so it fits in a byte.
Definition dbus-protocol.h:181
DBUS_DICT_ENTRY_END_CHAR
#define DBUS_DICT_ENTRY_END_CHAR
Code marking the end of a dict entry type in a type signature.
Definition dbus-protocol.h:168
DBUS_TYPE_OBJECT_PATH
#define DBUS_TYPE_OBJECT_PATH
Type code marking a D-Bus object path.
Definition dbus-protocol.h:106
DBUS_TYPE_BYTE
#define DBUS_TYPE_BYTE
Type code marking an 8-bit unsigned integer.
Definition dbus-protocol.h:66
DBUS_TYPE_INT16
#define DBUS_TYPE_INT16
Type code marking a 16-bit signed integer.
Definition dbus-protocol.h:74
DBUS_TYPE_VARIANT
#define DBUS_TYPE_VARIANT
Type code marking a D-Bus variant type.
Definition dbus-protocol.h:124
DBUS_MAXIMUM_ARRAY_LENGTH
#define DBUS_MAXIMUM_ARRAY_LENGTH
Max length of a marshaled array in bytes (64M, 2^26) We use signed int for lengths so must be INT_MAX...
Definition dbus-protocol.h:203
DBUS_TYPE_INT32
#define DBUS_TYPE_INT32
Type code marking a 32-bit signed integer.
Definition dbus-protocol.h:82
DBUS_TYPE_UNIX_FD
#define DBUS_TYPE_UNIX_FD
Type code marking a unix file descriptor.
Definition dbus-protocol.h:114
DBUS_TYPE_BOOLEAN
#define DBUS_TYPE_BOOLEAN
Type code marking a boolean.
Definition dbus-protocol.h:70
DBUS_STRUCT_BEGIN_CHAR
#define DBUS_STRUCT_BEGIN_CHAR
Code marking the start of a struct type in a type signature.
Definition dbus-protocol.h:156
DBUS_TYPE_STRING
#define DBUS_TYPE_STRING
Type code marking a UTF-8 encoded, nul-terminated Unicode string.
Definition dbus-protocol.h:102
DBUS_MAXIMUM_NAME_LENGTH
#define DBUS_MAXIMUM_NAME_LENGTH
Max length in bytes of a bus name, interface, or member (not object path, paths are unlimited).
Definition dbus-protocol.h:178
DBUS_TYPE_ARRAY
#define DBUS_TYPE_ARRAY
Type code marking a D-Bus array type.
Definition dbus-protocol.h:120
DBUS_TYPE_INVALID
#define DBUS_TYPE_INVALID
Type code that is never equal to a legitimate type code.
Definition dbus-protocol.h:60
DBUS_MAXIMUM_TYPE_RECURSION_DEPTH
#define DBUS_MAXIMUM_TYPE_RECURSION_DEPTH
Depth of recursion in the type tree.
Definition dbus-protocol.h:227
DBUS_TYPE_INT64
#define DBUS_TYPE_INT64
Type code marking a 64-bit signed integer.
Definition dbus-protocol.h:90
DBUS_TYPE_DOUBLE
#define DBUS_TYPE_DOUBLE
Type code marking an 8-byte double in IEEE 754 format.
Definition dbus-protocol.h:98
DBUS_TYPE_UINT64
#define DBUS_TYPE_UINT64
Type code marking a 64-bit unsigned integer.
Definition dbus-protocol.h:94
DBUS_TYPE_DICT_ENTRY
#define DBUS_TYPE_DICT_ENTRY
Type code used to represent a dict entry; however, this type code does not appear in type signatures,...
Definition dbus-protocol.h:143
DBUS_DICT_ENTRY_BEGIN_CHAR
#define DBUS_DICT_ENTRY_BEGIN_CHAR
Code marking the start of a dict entry type in a type signature.
Definition dbus-protocol.h:164
DBUS_TYPE_UINT16
#define DBUS_TYPE_UINT16
Type code marking a 16-bit unsigned integer.
Definition dbus-protocol.h:78
DBUS_TYPE_STRUCT
#define DBUS_TYPE_STRUCT
STRUCT and DICT_ENTRY are sort of special since their codes can't appear in a type string,...
Definition dbus-protocol.h:136
DBUS_STRUCT_END_CHAR
#define DBUS_STRUCT_END_CHAR
Code marking the end of a struct type in a type signature.
Definition dbus-protocol.h:160
DBUS_TYPE_UINT32
#define DBUS_TYPE_UINT32
Type code marking a 32-bit unsigned integer.
Definition dbus-protocol.h:86
dbus_type_is_basic
dbus_bool_t dbus_type_is_basic(int typecode)
A "basic type" is a somewhat arbitrary concept, but the intent is to include those types that are ful...
Definition dbus-signature.c:322
dbus_type_is_fixed
dbus_bool_t dbus_type_is_fixed(int typecode)
Tells you whether values of this type can change length if you set them to some other value.
Definition dbus-signature.c:353
dbus_type_is_valid
dbus_bool_t dbus_type_is_valid(int typecode)
Return TRUE if the argument is a valid typecode.
Definition dbus-signature.c:387
_dbus_string_validate_utf8
dbus_bool_t _dbus_string_validate_utf8(const DBusString *str, int start, int len)
Checks that the given range of the string is valid UTF-8.
Definition dbus-string.c:2641
_dbus_string_init_const_len
void _dbus_string_init_const_len(DBusString *str, const char *value, int len)
Initializes a constant string with a length.
Definition dbus-string.c:217
DBusList
A node in a linked list.
Definition dbus-list.h:35
DBusString
Definition dbus-string.h:43
DBusTypeReader
The type reader is an iterator for reading values from a block of values.
Definition dbus-marshal-recursive.h:40
DBusTypeReader::type_pos
int type_pos
current position in signature
Definition dbus-marshal-recursive.h:48