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

D-Bus 1.12.2

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
66 result = DBUS_VALID;
67 element_count_stack = NULL;
68
69 if (!_dbus_list_append (&element_count_stack, _DBUS_INT_TO_POINTER (0)))
70 {
71 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
72 goto out;
73 }
74
75 _dbus_assert (type_str != NULL);
76 _dbus_assert (type_pos < _DBUS_INT32_MAX - len);
77 _dbus_assert (len >= 0);
78 _dbus_assert (type_pos >= 0);
79
80 if (len > DBUS_MAXIMUM_SIGNATURE_LENGTH)
81 {
82 result = DBUS_INVALID_SIGNATURE_TOO_LONG;
83 goto out;
84 }
85
86 p = _dbus_string_get_const_udata_len (type_str, type_pos, 0);
87
88 end = _dbus_string_get_const_udata_len (type_str, type_pos + len, 0);
89 struct_depth = 0;
90 array_depth = 0;
91 dict_entry_depth = 0;
92 last = DBUS_TYPE_INVALID;
93
94 while (p != end)
95 {
96 switch (*p)
97 {
98 case DBUS_TYPE_BYTE:
99 case DBUS_TYPE_BOOLEAN:
100 case DBUS_TYPE_INT16:
101 case DBUS_TYPE_UINT16:
102 case DBUS_TYPE_INT32:
103 case DBUS_TYPE_UINT32:
104 case DBUS_TYPE_UNIX_FD:
105 case DBUS_TYPE_INT64:
106 case DBUS_TYPE_UINT64:
107 case DBUS_TYPE_DOUBLE:
108 case DBUS_TYPE_STRING:
109 case DBUS_TYPE_OBJECT_PATH:
110 case DBUS_TYPE_SIGNATURE:
111 case DBUS_TYPE_VARIANT:
112 break;
113
114 case DBUS_TYPE_ARRAY:
115 array_depth += 1;
116 if (array_depth > DBUS_MAXIMUM_TYPE_RECURSION_DEPTH)
117 {
118 result = DBUS_INVALID_EXCEEDED_MAXIMUM_ARRAY_RECURSION;
119 goto out;
120 }
121 break;
122
123 case DBUS_STRUCT_BEGIN_CHAR:
124 struct_depth += 1;
125
126 if (struct_depth > DBUS_MAXIMUM_TYPE_RECURSION_DEPTH)
127 {
128 result = DBUS_INVALID_EXCEEDED_MAXIMUM_STRUCT_RECURSION;
129 goto out;
130 }
131
132 if (!_dbus_list_append (&element_count_stack,
133 _DBUS_INT_TO_POINTER (0)))
134 {
135 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
136 goto out;
137 }
138
139 break;
140
141 case DBUS_STRUCT_END_CHAR:
142 if (struct_depth == 0)
143 {
144 result = DBUS_INVALID_STRUCT_ENDED_BUT_NOT_STARTED;
145 goto out;
146 }
147
148 if (last == DBUS_STRUCT_BEGIN_CHAR)
149 {
150 result = DBUS_INVALID_STRUCT_HAS_NO_FIELDS;
151 goto out;
152 }
153
154 _dbus_list_pop_last (&element_count_stack);
155
156 struct_depth -= 1;
157 break;
158
159 case DBUS_DICT_ENTRY_BEGIN_CHAR:
160 if (last != DBUS_TYPE_ARRAY)
161 {
162 result = DBUS_INVALID_DICT_ENTRY_NOT_INSIDE_ARRAY;
163 goto out;
164 }
165
166 dict_entry_depth += 1;
167
168 if (dict_entry_depth > DBUS_MAXIMUM_TYPE_RECURSION_DEPTH)
169 {
170 result = DBUS_INVALID_EXCEEDED_MAXIMUM_DICT_ENTRY_RECURSION;
171 goto out;
172 }
173
174 if (!_dbus_list_append (&element_count_stack,
175 _DBUS_INT_TO_POINTER (0)))
176 {
177 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
178 goto out;
179 }
180
181 break;
182
183 case DBUS_DICT_ENTRY_END_CHAR:
184 if (dict_entry_depth == 0)
185 {
186 result = DBUS_INVALID_DICT_ENTRY_ENDED_BUT_NOT_STARTED;
187 goto out;
188 }
189
190 dict_entry_depth -= 1;
191
192 element_count =
193 _DBUS_POINTER_TO_INT (_dbus_list_pop_last (&element_count_stack));
194
195 if (element_count != 2)
196 {
197 if (element_count == 0)
198 result = DBUS_INVALID_DICT_ENTRY_HAS_NO_FIELDS;
199 else if (element_count == 1)
200 result = DBUS_INVALID_DICT_ENTRY_HAS_ONLY_ONE_FIELD;
201 else
202 result = DBUS_INVALID_DICT_ENTRY_HAS_TOO_MANY_FIELDS;
203
204 goto out;
205 }
206 break;
207
208 case DBUS_TYPE_STRUCT: /* doesn't appear in signatures */
209 case DBUS_TYPE_DICT_ENTRY: /* ditto */
210 default:
211 result = DBUS_INVALID_UNKNOWN_TYPECODE;
212 goto out;
213 }
214
215 if (*p != DBUS_TYPE_ARRAY &&
216 *p != DBUS_DICT_ENTRY_BEGIN_CHAR &&
217 *p != DBUS_STRUCT_BEGIN_CHAR)
218 {
219 element_count =
220 _DBUS_POINTER_TO_INT (_dbus_list_pop_last (&element_count_stack));
221
222 ++element_count;
223
224 if (!_dbus_list_append (&element_count_stack,
225 _DBUS_INT_TO_POINTER (element_count)))
226 {
227 result = DBUS_VALIDITY_UNKNOWN_OOM_ERROR;
228 goto out;
229 }
230 }
231
232 if (array_depth > 0)
233 {
234 if (*p == DBUS_TYPE_ARRAY && p != end)
235 {
236 const unsigned char *p1;
237 p1 = p + 1;
238 if (*p1 == DBUS_STRUCT_END_CHAR ||
239 *p1 == DBUS_DICT_ENTRY_END_CHAR)
240 {
241 result = DBUS_INVALID_MISSING_ARRAY_ELEMENT_TYPE;
242 goto out;
243 }
244 }
245 else
246 {
247 array_depth = 0;
248 }
249 }
250
251 if (last == DBUS_DICT_ENTRY_BEGIN_CHAR)
252 {
253 if (!(dbus_type_is_valid (*p) && dbus_type_is_basic (*p)))
254 {
255 result = DBUS_INVALID_DICT_KEY_MUST_BE_BASIC_TYPE;
256 goto out;
257 }
258 }
259
260 last = *p;
261 ++p;
262 }
263
264
265 if (array_depth > 0)
266 {
267 result = DBUS_INVALID_MISSING_ARRAY_ELEMENT_TYPE;
268 goto out;
269 }
270
271 if (struct_depth > 0)
272 {
273 result = DBUS_INVALID_STRUCT_STARTED_BUT_NOT_ENDED;
274 goto out;
275 }
276
277 if (dict_entry_depth > 0)
278 {
279 result = DBUS_INVALID_DICT_ENTRY_STARTED_BUT_NOT_ENDED;
280 goto out;
281 }
282
283 _dbus_assert (last != DBUS_TYPE_ARRAY);
284 _dbus_assert (last != DBUS_STRUCT_BEGIN_CHAR);
285 _dbus_assert (last != DBUS_DICT_ENTRY_BEGIN_CHAR);
286
287 result = DBUS_VALID;
288
289 out:
290 _dbus_list_clear (&element_count_stack);
291 return result;
292 }
293
294 /* note: this function is also used to validate the header's values,
295 * since the header is a valid body with a particular signature.
296 */
297 static DBusValidity
298 validate_body_helper (DBusTypeReader *reader,
299 int byte_order,
300 dbus_bool_t walk_reader_to_end,
301 int total_depth,
302 const unsigned char *p,
303 const unsigned char *end,
304 const unsigned char **new_p)
305 {
306 int current_type;
307
308 /* The spec allows arrays and structs to each nest 32, for total
309 * nesting of 2*32. We want to impose the same limit on "dynamic"
310 * value nesting (not visible in the signature) which is introduced
311 * by DBUS_TYPE_VARIANT.
312 */
313 if (total_depth > (DBUS_MAXIMUM_TYPE_RECURSION_DEPTH * 2))
314 {
315 return DBUS_INVALID_NESTED_TOO_DEEPLY;
316 }
317
318 while ((current_type = _dbus_type_reader_get_current_type (reader)) != DBUS_TYPE_INVALID)
319 {
320 const unsigned char *a;
321 int alignment;
322
323 #if 0
324 _dbus_verbose (" validating value of type %s type reader %p type_pos %d p %p end %p %d remain\n",
325 _dbus_type_to_string (current_type), reader, reader->type_pos, p, end,
326 (int) (end - p));
327 #endif
328
329 /* Guarantee that p has one byte to look at */
330 if (p == end)
331 return DBUS_INVALID_NOT_ENOUGH_DATA;
332
333 switch (current_type)
334 {
335 case DBUS_TYPE_BYTE:
336 ++p;
337 break;
338
339 case DBUS_TYPE_BOOLEAN:
340 case DBUS_TYPE_INT16:
341 case DBUS_TYPE_UINT16:
342 case DBUS_TYPE_INT32:
343 case DBUS_TYPE_UINT32:
344 case DBUS_TYPE_UNIX_FD:
345 case DBUS_TYPE_INT64:
346 case DBUS_TYPE_UINT64:
347 case DBUS_TYPE_DOUBLE:
348 alignment = _dbus_type_get_alignment (current_type);
349 a = _DBUS_ALIGN_ADDRESS (p, alignment);
350 if (a >= end)
351 return DBUS_INVALID_NOT_ENOUGH_DATA;
352 while (p != a)
353 {
354 if (*p != '\0')
355 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
356 ++p;
357 }
358
359 if (current_type == DBUS_TYPE_BOOLEAN)
360 {
361 dbus_uint32_t v = _dbus_unpack_uint32 (byte_order,
362 p);
363 if (!(v == 0 || v == 1))
364 return DBUS_INVALID_BOOLEAN_NOT_ZERO_OR_ONE;
365 }
366
367 p += alignment;
368 break;
369
370 case DBUS_TYPE_ARRAY:
371 case DBUS_TYPE_STRING:
372 case DBUS_TYPE_OBJECT_PATH:
373 {
374 dbus_uint32_t claimed_len;
375
376 a = _DBUS_ALIGN_ADDRESS (p, 4);
377 if (a + 4 > end)
378 return DBUS_INVALID_NOT_ENOUGH_DATA;
379 while (p != a)
380 {
381 if (*p != '\0')
382 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
383 ++p;
384 }
385
386 claimed_len = _dbus_unpack_uint32 (byte_order, p);
387 p += 4;
388
389 /* p may now be == end */
390 _dbus_assert (p <= end);
391
392 if (current_type == DBUS_TYPE_ARRAY)
393 {
394 int array_elem_type = _dbus_type_reader_get_element_type (reader);
395
396 if (!dbus_type_is_valid (array_elem_type))
397 {
398 return DBUS_INVALID_UNKNOWN_TYPECODE;
399 }
400
401 alignment = _dbus_type_get_alignment (array_elem_type);
402
403 a = _DBUS_ALIGN_ADDRESS (p, alignment);
404
405 /* a may now be == end */
406 if (a > end)
407 return DBUS_INVALID_NOT_ENOUGH_DATA;
408
409 while (p != a)
410 {
411 if (*p != '\0')
412 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
413 ++p;
414 }
415 }
416
417 if (claimed_len > (unsigned long) (end - p))
418 return DBUS_INVALID_LENGTH_OUT_OF_BOUNDS;
419
420 if (current_type == DBUS_TYPE_OBJECT_PATH)
421 {
422 DBusString str;
423 _dbus_string_init_const_len (&str, (const char *) p, claimed_len);
424 if (!_dbus_validate_path (&str, 0,
425 _dbus_string_get_length (&str)))
426 return DBUS_INVALID_BAD_PATH;
427
428 p += claimed_len;
429 }
430 else if (current_type == DBUS_TYPE_STRING)
431 {
432 DBusString str;
433 _dbus_string_init_const_len (&str, (const char *) p, claimed_len);
434 if (!_dbus_string_validate_utf8 (&str, 0,
435 _dbus_string_get_length (&str)))
436 return DBUS_INVALID_BAD_UTF8_IN_STRING;
437
438 p += claimed_len;
439 }
440 else if (current_type == DBUS_TYPE_ARRAY && claimed_len > 0)
441 {
442 DBusTypeReader sub;
443 DBusValidity validity;
444 const unsigned char *array_end;
445 int array_elem_type;
446
447 if (claimed_len > DBUS_MAXIMUM_ARRAY_LENGTH)
448 return DBUS_INVALID_ARRAY_LENGTH_EXCEEDS_MAXIMUM;
449
450 /* Remember that the reader is types only, so we can't
451 * use it to iterate over elements. It stays the same
452 * for all elements.
453 */
454 _dbus_type_reader_recurse (reader, &sub);
455
456 array_end = p + claimed_len;
457
458 array_elem_type = _dbus_type_reader_get_element_type (reader);
459
460 /* avoid recursive call to validate_body_helper if this is an array
461 * of fixed-size elements
462 */
463 if (dbus_type_is_fixed (array_elem_type))
464 {
465 /* bools need to be handled differently, because they can
466 * have an invalid value
467 */
468 if (array_elem_type == DBUS_TYPE_BOOLEAN)
469 {
470 dbus_uint32_t v;
471 alignment = _dbus_type_get_alignment (array_elem_type);
472
473 while (p < array_end)
474 {
475 v = _dbus_unpack_uint32 (byte_order, p);
476
477 if (!(v == 0 || v == 1))
478 return DBUS_INVALID_BOOLEAN_NOT_ZERO_OR_ONE;
479
480 p += alignment;
481 }
482 }
483
484 else
485 {
486 p = array_end;
487 }
488 }
489
490 else
491 {
492 while (p < array_end)
493 {
494 validity = validate_body_helper (&sub, byte_order, FALSE,
495 total_depth + 1,
496 p, end, &p);
497 if (validity != DBUS_VALID)
498 return validity;
499 }
500 }
501
502 if (p != array_end)
503 return DBUS_INVALID_ARRAY_LENGTH_INCORRECT;
504 }
505
506 /* check nul termination */
507 if (current_type != DBUS_TYPE_ARRAY)
508 {
509 if (p == end)
510 return DBUS_INVALID_NOT_ENOUGH_DATA;
511
512 if (*p != '\0')
513 return DBUS_INVALID_STRING_MISSING_NUL;
514 ++p;
515 }
516 }
517 break;
518
519 case DBUS_TYPE_SIGNATURE:
520 {
521 dbus_uint32_t claimed_len;
522 DBusString str;
523 DBusValidity validity;
524
525 claimed_len = *p;
526 ++p;
527
528 /* 1 is for nul termination */
529 if (claimed_len + 1 > (unsigned long) (end - p))
530 return DBUS_INVALID_SIGNATURE_LENGTH_OUT_OF_BOUNDS;
531
532 _dbus_string_init_const_len (&str, (const char *) p, claimed_len);
533 validity =
534 _dbus_validate_signature_with_reason (&str, 0,
535 _dbus_string_get_length (&str));
536
537 if (validity != DBUS_VALID)
538 return validity;
539
540 p += claimed_len;
541
542 _dbus_assert (p < end);
543 if (*p != DBUS_TYPE_INVALID)
544 return DBUS_INVALID_SIGNATURE_MISSING_NUL;
545
546 ++p;
547
548 _dbus_verbose ("p = %p end = %p claimed_len %u\n", p, end, claimed_len);
549 }
550 break;
551
552 case DBUS_TYPE_VARIANT:
553 {
554 /* 1 byte sig len, sig typecodes, align to
555 * contained-type-boundary, values.
556 */
557
558 /* In addition to normal signature validation, we need to be sure
559 * the signature contains only a single (possibly container) type.
560 */
561 dbus_uint32_t claimed_len;
562 DBusString sig;
563 DBusTypeReader sub;
564 DBusValidity validity;
565 int contained_alignment;
566 int contained_type;
567 DBusValidity reason;
568
569 claimed_len = *p;
570 ++p;
571
572 /* + 1 for nul */
573 if (claimed_len + 1 > (unsigned long) (end - p))
574 return DBUS_INVALID_VARIANT_SIGNATURE_LENGTH_OUT_OF_BOUNDS;
575
576 _dbus_string_init_const_len (&sig, (const char *) p, claimed_len);
577 reason = _dbus_validate_signature_with_reason (&sig, 0,
578 _dbus_string_get_length (&sig));
579 if (!(reason == DBUS_VALID))
580 {
581 if (reason == DBUS_VALIDITY_UNKNOWN_OOM_ERROR)
582 return reason;
583 else
584 return DBUS_INVALID_VARIANT_SIGNATURE_BAD;
585 }
586
587 p += claimed_len;
588
589 if (*p != DBUS_TYPE_INVALID)
590 return DBUS_INVALID_VARIANT_SIGNATURE_MISSING_NUL;
591 ++p;
592
593 contained_type = _dbus_first_type_in_signature (&sig, 0);
594 if (contained_type == DBUS_TYPE_INVALID)
595 return DBUS_INVALID_VARIANT_SIGNATURE_EMPTY;
596
597 contained_alignment = _dbus_type_get_alignment (contained_type);
598
599 a = _DBUS_ALIGN_ADDRESS (p, contained_alignment);
600 if (a > end)
601 return DBUS_INVALID_NOT_ENOUGH_DATA;
602 while (p != a)
603 {
604 if (*p != '\0')
605 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
606 ++p;
607 }
608
609 _dbus_type_reader_init_types_only (&sub, &sig, 0);
610
611 _dbus_assert (_dbus_type_reader_get_current_type (&sub) != DBUS_TYPE_INVALID);
612
613 validity = validate_body_helper (&sub, byte_order, FALSE,
614 total_depth + 1,
615 p, end, &p);
616 if (validity != DBUS_VALID)
617 return validity;
618
619 if (_dbus_type_reader_next (&sub))
620 return DBUS_INVALID_VARIANT_SIGNATURE_SPECIFIES_MULTIPLE_VALUES;
621
622 _dbus_assert (_dbus_type_reader_get_current_type (&sub) == DBUS_TYPE_INVALID);
623 }
624 break;
625
626 case DBUS_TYPE_DICT_ENTRY:
627 case DBUS_TYPE_STRUCT:
628 {
629 DBusTypeReader sub;
630 DBusValidity validity;
631
632 a = _DBUS_ALIGN_ADDRESS (p, 8);
633 if (a > end)
634 return DBUS_INVALID_NOT_ENOUGH_DATA;
635 while (p != a)
636 {
637 if (*p != '\0')
638 return DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL;
639 ++p;
640 }
641
642 _dbus_type_reader_recurse (reader, &sub);
643
644 validity = validate_body_helper (&sub, byte_order, TRUE,
645 total_depth + 1,
646 p, end, &p);
647 if (validity != DBUS_VALID)
648 return validity;
649 }
650 break;
651
652 default:
653 _dbus_assert_not_reached ("invalid typecode in supposedly-validated signature");
654 break;
655 }
656
657 #if 0
658 _dbus_verbose (" validated value of type %s type reader %p type_pos %d p %p end %p %d remain\n",
659 _dbus_type_to_string (current_type), reader, reader->type_pos, p, end,
660 (int) (end - p));
661 #endif
662
663 if (p > end)
664 {
665 _dbus_verbose ("not enough data!!! p = %p end = %p end-p = %d\n",
666 p, end, (int) (end - p));
667 return DBUS_INVALID_NOT_ENOUGH_DATA;
668 }
669
670 if (walk_reader_to_end)
671 _dbus_type_reader_next (reader);
672 else
673 break;
674 }
675
676 if (new_p)
677 *new_p = p;
678
679 return DBUS_VALID;
680 }
681
702 DBusValidity
703 _dbus_validate_body_with_reason (const DBusString *expected_signature,
704 int expected_signature_start,
705 int byte_order,
706 int *bytes_remaining,
707 const DBusString *value_str,
708 int value_pos,
709 int len)
710 {
711 DBusTypeReader reader;
712 const unsigned char *p;
713 const unsigned char *end;
714 DBusValidity validity;
715
716 _dbus_assert (len >= 0);
717 _dbus_assert (value_pos >= 0);
718 _dbus_assert (value_pos <= _dbus_string_get_length (value_str) - len);
719
720 _dbus_verbose ("validating body from pos %d len %d sig '%s'\n",
721 value_pos, len, _dbus_string_get_const_data_len (expected_signature,
722 expected_signature_start,
723 0));
724
725 _dbus_type_reader_init_types_only (&reader,
726 expected_signature, expected_signature_start);
727
728 p = _dbus_string_get_const_udata_len (value_str, value_pos, len);
729 end = p + len;
730
731 validity = validate_body_helper (&reader, byte_order, TRUE, 0, p, end, &p);
732 if (validity != DBUS_VALID)
733 return validity;
734
735 if (bytes_remaining)
736 {
737 *bytes_remaining = end - p;
738 return DBUS_VALID;
739 }
740 else if (p < end)
741 return DBUS_INVALID_TOO_MUCH_DATA;
742 else
743 {
744 _dbus_assert (p == end);
745 return DBUS_VALID;
746 }
747 }
748
753 #define VALID_INITIAL_NAME_CHARACTER(c) \
754 ( ((c) >= 'A' && (c) <= 'Z') || \
755 ((c) >= 'a' && (c) <= 'z') || \
756 ((c) == '_') )
757
762 #define VALID_NAME_CHARACTER(c) \
763 ( ((c) >= '0' && (c) <= '9') || \
764 ((c) >= 'A' && (c) <= 'Z') || \
765 ((c) >= 'a' && (c) <= 'z') || \
766 ((c) == '_') )
767
784 dbus_bool_t
785 _dbus_validate_path (const DBusString *str,
786 int start,
787 int len)
788 {
789 const unsigned char *s;
790 const unsigned char *end;
791 const unsigned char *last_slash;
792
793 _dbus_assert (start >= 0);
794 _dbus_assert (len >= 0);
795 _dbus_assert (start <= _dbus_string_get_length (str));
796
797 if (len > _dbus_string_get_length (str) - start)
798 return FALSE;
799
800 if (len == 0)
801 return FALSE;
802
803 s = _dbus_string_get_const_udata (str) + start;
804 end = s + len;
805
806 if (*s != '/')
807 return FALSE;
808 last_slash = s;
809 ++s;
810
811 while (s != end)
812 {
813 if (*s == '/')
814 {
815 if ((s - last_slash) < 2)
816 return FALSE; /* no empty path components allowed */
817
818 last_slash = s;
819 }
820 else
821 {
822 if (_DBUS_UNLIKELY (!VALID_NAME_CHARACTER (*s)))
823 return FALSE;
824 }
825
826 ++s;
827 }
828
829 if ((end - last_slash) < 2 &&
830 len > 1)
831 return FALSE; /* trailing slash not allowed unless the string is "/" */
832
833 return TRUE;
834 }
835
836 const char *
837 _dbus_validity_to_error_message (DBusValidity validity)
838 {
839 switch (validity)
840 {
841 case DBUS_VALIDITY_UNKNOWN_OOM_ERROR: return "Out of memory";
842 case DBUS_INVALID_FOR_UNKNOWN_REASON: return "Unknown reason";
843 case DBUS_VALID_BUT_INCOMPLETE: return "Valid but incomplete";
844 case DBUS_VALIDITY_UNKNOWN: return "Validity unknown";
845 case DBUS_VALID: return "Valid";
846 case DBUS_INVALID_UNKNOWN_TYPECODE: return "Unknown typecode";
847 case DBUS_INVALID_MISSING_ARRAY_ELEMENT_TYPE: return "Missing array element type";
848 case DBUS_INVALID_SIGNATURE_TOO_LONG: return "Signature is too long";
849 case DBUS_INVALID_EXCEEDED_MAXIMUM_ARRAY_RECURSION: return "Exceeded maximum array recursion";
850 case DBUS_INVALID_EXCEEDED_MAXIMUM_STRUCT_RECURSION: return "Exceeded maximum struct recursion";
851 case DBUS_INVALID_STRUCT_ENDED_BUT_NOT_STARTED: return "Struct ended but not started";
852 case DBUS_INVALID_STRUCT_STARTED_BUT_NOT_ENDED: return "Struct started but not ended";
853 case DBUS_INVALID_STRUCT_HAS_NO_FIELDS: return "Struct has no fields";
854 case DBUS_INVALID_ALIGNMENT_PADDING_NOT_NUL: return "Alignment padding not null";
855 case DBUS_INVALID_BOOLEAN_NOT_ZERO_OR_ONE: return "Boolean is not zero or one";
856 case DBUS_INVALID_NOT_ENOUGH_DATA: return "Not enough data";
857 case DBUS_INVALID_TOO_MUCH_DATA: return "Too much data";
858 case DBUS_INVALID_BAD_BYTE_ORDER: return "Bad byte order";
859 case DBUS_INVALID_BAD_PROTOCOL_VERSION: return "Bad protocol version";
860 case DBUS_INVALID_BAD_MESSAGE_TYPE: return "Bad message type";
861 case DBUS_INVALID_BAD_SERIAL: return "Bad serial";
862 case DBUS_INVALID_INSANE_FIELDS_ARRAY_LENGTH: return "Insane fields array length";
863 case DBUS_INVALID_INSANE_BODY_LENGTH: return "Insane body length";
864 case DBUS_INVALID_MESSAGE_TOO_LONG: return "Message too long";
865 case DBUS_INVALID_HEADER_FIELD_CODE: return "Header field code";
866 case DBUS_INVALID_HEADER_FIELD_HAS_WRONG_TYPE: return "Header field has wrong type";
867 case DBUS_INVALID_USES_LOCAL_INTERFACE: return "Uses local interface";
868 case DBUS_INVALID_USES_LOCAL_PATH: return "Uses local path";
869 case DBUS_INVALID_HEADER_FIELD_APPEARS_TWICE: return "Header field appears twice";
870 case DBUS_INVALID_BAD_DESTINATION: return "Bad destination";
871 case DBUS_INVALID_BAD_INTERFACE: return "Bad interface";
872 case DBUS_INVALID_BAD_MEMBER: return "Bad member";
873 case DBUS_INVALID_BAD_ERROR_NAME: return "Bad error name";
874 case DBUS_INVALID_BAD_SENDER: return "Bad sender";
875 case DBUS_INVALID_MISSING_PATH: return "Missing path";
876 case DBUS_INVALID_MISSING_INTERFACE: return "Missing interface";
877 case DBUS_INVALID_MISSING_MEMBER: return "Missing member";
878 case DBUS_INVALID_MISSING_ERROR_NAME: return "Missing error name";
879 case DBUS_INVALID_MISSING_REPLY_SERIAL: return "Missing reply serial";
880 case DBUS_INVALID_LENGTH_OUT_OF_BOUNDS: return "Length out of bounds";
881 case DBUS_INVALID_ARRAY_LENGTH_EXCEEDS_MAXIMUM: return "Array length exceeds maximum";
882 case DBUS_INVALID_BAD_PATH: return "Bad path";
883 case DBUS_INVALID_SIGNATURE_LENGTH_OUT_OF_BOUNDS: return "Signature length out of bounds";
884 case DBUS_INVALID_BAD_UTF8_IN_STRING: return "Bad utf8 in string";
885 case DBUS_INVALID_ARRAY_LENGTH_INCORRECT: return "Array length incorrect";
886 case DBUS_INVALID_VARIANT_SIGNATURE_LENGTH_OUT_OF_BOUNDS: return "Variant signature length out of bounds";
887 case DBUS_INVALID_VARIANT_SIGNATURE_BAD: return "Variant signature bad";
888 case DBUS_INVALID_VARIANT_SIGNATURE_EMPTY: return "Variant signature empty";
889 case DBUS_INVALID_VARIANT_SIGNATURE_SPECIFIES_MULTIPLE_VALUES: return "Variant signature specifies multiple values";
890 case DBUS_INVALID_VARIANT_SIGNATURE_MISSING_NUL: return "Variant signature missing nul";
891 case DBUS_INVALID_STRING_MISSING_NUL: return "String missing nul";
892 case DBUS_INVALID_SIGNATURE_MISSING_NUL: return "Signature missing nul";
893 case DBUS_INVALID_EXCEEDED_MAXIMUM_DICT_ENTRY_RECURSION: return "Exceeded maximum dict entry recursion";
894 case DBUS_INVALID_DICT_ENTRY_ENDED_BUT_NOT_STARTED: return "Dict entry ended but not started";
895 case DBUS_INVALID_DICT_ENTRY_STARTED_BUT_NOT_ENDED: return "Dict entry started but not ended";
896 case DBUS_INVALID_DICT_ENTRY_HAS_NO_FIELDS: return "Dict entry has no fields";
897 case DBUS_INVALID_DICT_ENTRY_HAS_ONLY_ONE_FIELD: return "Dict entry has only one field";
898 case DBUS_INVALID_DICT_ENTRY_HAS_TOO_MANY_FIELDS: return "Dict entry has too many fields";
899 case DBUS_INVALID_DICT_ENTRY_NOT_INSIDE_ARRAY: return "Dict entry not inside array";
900 case DBUS_INVALID_DICT_KEY_MUST_BE_BASIC_TYPE: return "Dict key must be basic type";
901 case DBUS_INVALID_MISSING_UNIX_FDS: return "Unix file descriptor missing";
902 case DBUS_INVALID_NESTED_TOO_DEEPLY: return "Variants cannot be used to create a hugely recursive tree of values";
903 case DBUS_VALIDITY_LAST:
904 default:
905 return "Invalid";
906 }
907 }
908
922 dbus_bool_t
923 _dbus_validate_interface (const DBusString *str,
924 int start,
925 int len)
926 {
927 const unsigned char *s;
928 const unsigned char *end;
929 const unsigned char *iface;
930 const unsigned char *last_dot;
931
932 _dbus_assert (start >= 0);
933 _dbus_assert (len >= 0);
934 _dbus_assert (start <= _dbus_string_get_length (str));
935
936 if (len > _dbus_string_get_length (str) - start)
937 return FALSE;
938
939 if (len > DBUS_MAXIMUM_NAME_LENGTH)
940 return FALSE;
941
942 if (len == 0)
943 return FALSE;
944
945 last_dot = NULL;
946 iface = _dbus_string_get_const_udata (str) + start;
947 end = iface + len;
948 s = iface;
949
950 /* check special cases of first char so it doesn't have to be done
951 * in the loop. Note we know len > 0
952 */
953 if (_DBUS_UNLIKELY (*s == '.')) /* disallow starting with a . */
954 return FALSE;
955 else if (_DBUS_UNLIKELY (!VALID_INITIAL_NAME_CHARACTER (*s)))
956 return FALSE;
957 else
958 ++s;
959
960 while (s != end)
961 {
962 if (*s == '.')
963 {
964 if (_DBUS_UNLIKELY ((s + 1) == end))
965 return FALSE;
966 else if (_DBUS_UNLIKELY (!VALID_INITIAL_NAME_CHARACTER (*(s + 1))))
967 return FALSE;
968 last_dot = s;
969 ++s; /* we just validated the next char, so skip two */
970 }
971 else if (_DBUS_UNLIKELY (!VALID_NAME_CHARACTER (*s)))
972 {
973 return FALSE;
974 }
975
976 ++s;
977 }
978
979 if (_DBUS_UNLIKELY (last_dot == NULL))
980 return FALSE;
981
982 return TRUE;
983 }
984
998 dbus_bool_t
999 _dbus_validate_member (const DBusString *str,
1000 int start,
1001 int len)
1002 {
1003 const unsigned char *s;
1004 const unsigned char *end;
1005 const unsigned char *member;
1006
1007 _dbus_assert (start >= 0);
1008 _dbus_assert (len >= 0);
1009 _dbus_assert (start <= _dbus_string_get_length (str));
1010
1011 if (len > _dbus_string_get_length (str) - start)
1012 return FALSE;
1013
1014 if (len > DBUS_MAXIMUM_NAME_LENGTH)
1015 return FALSE;
1016
1017 if (len == 0)
1018 return FALSE;
1019
1020 member = _dbus_string_get_const_udata (str) + start;
1021 end = member + len;
1022 s = member;
1023
1024 /* check special cases of first char so it doesn't have to be done
1025 * in the loop. Note we know len > 0
1026 */
1027
1028 if (_DBUS_UNLIKELY (!VALID_INITIAL_NAME_CHARACTER (*s)))
1029 return FALSE;
1030 else
1031 ++s;
1032
1033 while (s != end)
1034 {
1035 if (_DBUS_UNLIKELY (!VALID_NAME_CHARACTER (*s)))
1036 {
1037 return FALSE;
1038 }
1039
1040 ++s;
1041 }
1042
1043 return TRUE;
1044 }
1045
1059 dbus_bool_t
1060 _dbus_validate_error_name (const DBusString *str,
1061 int start,
1062 int len)
1063 {
1064 /* Same restrictions as interface name at the moment */
1065 return _dbus_validate_interface (str, start, len);
1066 }
1067
1072 #define VALID_INITIAL_BUS_NAME_CHARACTER(c) \
1073 ( ((c) >= 'A' && (c) <= 'Z') || \
1074 ((c) >= 'a' && (c) <= 'z') || \
1075 ((c) == '_') || ((c) == '-'))
1076
1081 #define VALID_BUS_NAME_CHARACTER(c) \
1082 ( ((c) >= '0' && (c) <= '9') || \
1083 ((c) >= 'A' && (c) <= 'Z') || \
1084 ((c) >= 'a' && (c) <= 'z') || \
1085 ((c) == '_') || ((c) == '-'))
1086
1087 static dbus_bool_t
1088 _dbus_validate_bus_name_full (const DBusString *str,
1089 int start,
1090 int len,
1091 dbus_bool_t is_namespace)
1092 {
1093 const unsigned char *s;
1094 const unsigned char *end;
1095 const unsigned char *iface;
1096 const unsigned char *last_dot;
1097
1098 _dbus_assert (start >= 0);
1099 _dbus_assert (len >= 0);
1100 _dbus_assert (start <= _dbus_string_get_length (str));
1101
1102 if (len > _dbus_string_get_length (str) - start)
1103 return FALSE;
1104
1105 if (len > DBUS_MAXIMUM_NAME_LENGTH)
1106 return FALSE;
1107
1108 if (len == 0)
1109 return FALSE;
1110
1111 last_dot = NULL;
1112 iface = _dbus_string_get_const_udata (str) + start;
1113 end = iface + len;
1114 s = iface;
1115
1116 /* check special cases of first char so it doesn't have to be done
1117 * in the loop. Note we know len > 0
1118 */
1119 if (*s == ':')
1120 {
1121 /* unique name */
1122 ++s;
1123 while (s != end)
1124 {
1125 if (*s == '.')
1126 {
1127 if (_DBUS_UNLIKELY ((s + 1) == end))
1128 return FALSE;
1129 if (_DBUS_UNLIKELY (!VALID_BUS_NAME_CHARACTER (*(s + 1))))
1130 return FALSE;
1131 ++s; /* we just validated the next char, so skip two */
1132 }
1133 else if (_DBUS_UNLIKELY (!VALID_BUS_NAME_CHARACTER (*s)))
1134 {
1135 return FALSE;
1136 }
1137
1138 ++s;
1139 }
1140
1141 return TRUE;
1142 }
1143 else if (_DBUS_UNLIKELY (*s == '.')) /* disallow starting with a . */
1144 return FALSE;
1145 else if (_DBUS_UNLIKELY (!VALID_INITIAL_BUS_NAME_CHARACTER (*s)))
1146 return FALSE;
1147 else
1148 ++s;
1149
1150 while (s != end)
1151 {
1152 if (*s == '.')
1153 {
1154 if (_DBUS_UNLIKELY ((s + 1) == end))
1155 return FALSE;
1156 else if (_DBUS_UNLIKELY (!VALID_INITIAL_BUS_NAME_CHARACTER (*(s + 1))))
1157 return FALSE;
1158 last_dot = s;
1159 ++s; /* we just validated the next char, so skip two */
1160 }
1161 else if (_DBUS_UNLIKELY (!VALID_BUS_NAME_CHARACTER (*s)))
1162 {
1163 return FALSE;
1164 }
1165
1166 ++s;
1167 }
1168
1169 if (!is_namespace && _DBUS_UNLIKELY (last_dot == NULL))
1170 return FALSE;
1171
1172 return TRUE;
1173 }
1174
1188 dbus_bool_t
1189 _dbus_validate_bus_name (const DBusString *str,
1190 int start,
1191 int len)
1192 {
1193 return _dbus_validate_bus_name_full (str, start, len, FALSE);
1194 }
1195
1209 dbus_bool_t
1210 _dbus_validate_bus_namespace (const DBusString *str,
1211 int start,
1212 int len)
1213 {
1214 return _dbus_validate_bus_name_full (str, start, len, TRUE);
1215 }
1216
1218 DEFINE_DBUS_NAME_CHECK(path)
1220 DEFINE_DBUS_NAME_CHECK(interface)
1222 DEFINE_DBUS_NAME_CHECK(member)
1224 DEFINE_DBUS_NAME_CHECK(error_name)
1226 DEFINE_DBUS_NAME_CHECK(bus_name)
1228 DEFINE_DBUS_NAME_CHECK(utf8)
1229
1230
1232 /* tests in dbus-marshal-validate-util.c */
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:350
_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:703
dbus_uint32_t
unsigned int dbus_uint32_t
A 32-bit unsigned integer on all platforms.
Definition: dbus-arch-deps.h:43
DBUS_TYPE_UINT16
#define DBUS_TYPE_UINT16
Type code marking a 16-bit unsigned integer.
Definition: dbus-protocol.h:78
NULL
#define NULL
A null pointer, defined appropriately for C or C++.
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_INVALID_TOO_MUCH_DATA
trailing junk makes it invalid
Definition: dbus-marshal-validate.h:70
_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:672
_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:1418
_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&#39;s a child of the curr...
Definition: dbus-marshal-recursive.c:989
DBUS_TYPE_STRUCT
#define DBUS_TYPE_STRUCT
STRUCT and DICT_ENTRY are sort of special since their codes can&#39;t appear in a type string...
Definition: dbus-protocol.h:136
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_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_TYPE_STRING
#define DBUS_TYPE_STRING
Type code marking a UTF-8 encoded, nul-terminated Unicode string.
Definition: dbus-protocol.h:102
_dbus_assert
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
Definition: dbus-internals.h:152
DBusTypeReader::type_pos
int type_pos
current position in signature
Definition: dbus-marshal-recursive.h:48
_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:191
DBUS_TYPE_BYTE
#define DBUS_TYPE_BYTE
Type code marking an 8-bit unsigned integer.
Definition: dbus-protocol.h:66
_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:923
_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_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
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:49
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_DOUBLE
#define DBUS_TYPE_DOUBLE
Type code marking an 8-byte double in IEEE 754 format.
Definition: dbus-protocol.h:98
_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:999
DBUS_TYPE_ARRAY
#define DBUS_TYPE_ARRAY
Type code marking a D-Bus array type.
Definition: dbus-protocol.h:120
DBUS_TYPE_INT64
#define DBUS_TYPE_INT64
Type code marking a 64-bit signed integer.
Definition: dbus-protocol.h:90
_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:785
_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:1060
_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:186
DBusString
Definition: dbus-string.h:42
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:319
dbus_bool_t
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition: dbus-types.h:35
DBUS_VALIDITY_UNKNOWN_OOM_ERROR
can&#39;t determine validity due to OOM
Definition: dbus-marshal-validate.h:52
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:1081
_dbus_list_append
dbus_bool_t _dbus_list_append(DBusList **list, void *data)
Appends a value to the list.
Definition: dbus-list.c:270
DBUS_TYPE_INT32
#define DBUS_TYPE_INT32
Type code marking a 32-bit signed integer.
Definition: dbus-protocol.h:82
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_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:1055
_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:1210
_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:2555
_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:190
DBUS_TYPE_SIGNATURE
#define DBUS_TYPE_SIGNATURE
Type code marking a D-Bus type signature.
Definition: dbus-protocol.h:110
_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:1189
DBUS_TYPE_UINT64
#define DBUS_TYPE_UINT64
Type code marking a 64-bit unsigned integer.
Definition: dbus-protocol.h:94
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_VARIANT
#define DBUS_TYPE_VARIANT
Type code marking a D-Bus variant type.
Definition: dbus-protocol.h:124
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:179
DBUS_TYPE_UINT32
#define DBUS_TYPE_UINT32
Type code marking a 32-bit unsigned integer.
Definition: dbus-protocol.h:86
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:753
DBUS_VALID
the data is valid
Definition: dbus-marshal-validate.h:56
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:762
DBusTypeReader
The type reader is an iterator for reading values from a block of values.
Definition: dbus-marshal-recursive.h:39
TRUE
#define TRUE
Expands to "1".
_dbus_assert_not_reached
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
Definition: dbus-internals.h:163
DBUS_TYPE_OBJECT_PATH
#define DBUS_TYPE_OBJECT_PATH
Type code marking a D-Bus object path.
Definition: dbus-protocol.h:106
DBUS_TYPE_UNIX_FD
#define DBUS_TYPE_UNIX_FD
Type code marking a unix file descriptor.
Definition: dbus-protocol.h:114
DBUS_TYPE_INVALID
#define DBUS_TYPE_INVALID
Type code that is never equal to a legitimate type code.
Definition: dbus-protocol.h:60
_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
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
DBusList
A node in a linked list.
Definition: dbus-list.h:34
DBUS_TYPE_INT16
#define DBUS_TYPE_INT16
Type code marking a 16-bit signed integer.
Definition: dbus-protocol.h:74
DBUS_TYPE_BOOLEAN
#define DBUS_TYPE_BOOLEAN
Type code marking a boolean.
Definition: dbus-protocol.h:70
_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_INT32_MAX
#define _DBUS_INT32_MAX
Maximum value of type "int32".
Definition: dbus-internals.h:260
_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
FALSE
#define FALSE
Expands to "0".
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_to_string
const char * _dbus_type_to_string(int typecode)
Returns a string describing the given type.
Definition: dbus-marshal-basic.c:1223
_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:1177
_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:210
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:1072
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:384
_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:542