D-Bus 1.16.0

dbus-string.c
1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-string.c String utility class (internal to D-Bus implementation)
3 *
4 * Copyright 2002-2007 Red Hat, Inc.
5 * Copyright 2003 CodeFactory AB
6 * Copyright 2003 Mark McLoughlin
7 * Copyright 2004 Michael Meeks
8 * Copyright 2006-2014 Ralf Habacker <ralf.habacker@freenet.de>
9 * Copyright 2006-2018 Collabora Ltd.
10 * Copyright 2007 Allison Lortie
11 * Copyright 2011 Roberto Guido
12 * Copyright 2013 Chengwei Yang / Intel
13 *
14 * SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
15 *
16 * Licensed under the Academic Free License version 2.1
17 *
18 * This program is free software; you can redistribute it and/or modify
19 * it under the terms of the GNU General Public License as published by
20 * the Free Software Foundation; either version 2 of the License, or
21 * (at your option) any later version.
22 *
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU General Public License for more details.
27 *
28 * You should have received a copy of the GNU General Public License
29 * along with this program; if not, write to the Free Software
30 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
31 *
32 */
33
34#include <config.h>
35#include "dbus-internals.h"
36#include "dbus-string.h"
37/* we allow a system header here, for speed/convenience */
38#include <string.h>
39/* for vsnprintf */
40#include <stdio.h>
41#define DBUS_CAN_USE_DBUS_STRING_PRIVATE 1
42#include "dbus-string-private.h"
43#include "dbus-marshal-basic.h" /* probably should be removed by moving the usage of DBUS_TYPE
44 * into the marshaling-related files
45 */
46
85 static void
86fixup_alignment (DBusRealString *real)
87{
88 unsigned char *aligned;
89 unsigned char *real_block;
90 unsigned int old_align_offset;
91
92 /* we have to have extra space in real->allocated for the align offset and nul byte */
93 _dbus_assert (real->len <= real->allocated - _DBUS_STRING_ALLOCATION_PADDING);
94
95 old_align_offset = real->align_offset;
96 real_block = real->str - old_align_offset;
97
98 aligned = _DBUS_ALIGN_ADDRESS (real_block, 8);
99
100 real->align_offset = aligned - real_block;
101 real->str = aligned;
102
103 if (old_align_offset != real->align_offset)
104 {
105 /* Here comes the suck */
106 memmove (real_block + real->align_offset,
107 real_block + old_align_offset,
108 real->len + 1);
109 }
110
111 _dbus_assert (real->align_offset < 8);
112 _dbus_assert (_DBUS_ALIGN_ADDRESS (real->str, 8) == real->str);
113}
114
115 static void
116undo_alignment (DBusRealString *real)
117{
118 if (real->align_offset != 0)
119 {
120 memmove (real->str - real->align_offset,
121 real->str,
122 real->len + 1);
123
124 real->str = real->str - real->align_offset;
125 real->align_offset = 0;
126 }
127}
128
138 dbus_bool_t
139_dbus_string_init_preallocated (DBusString *str,
140 int allocate_size)
141{
142 DBusRealString *real;
143
144 _DBUS_STATIC_ASSERT (sizeof (DBusString) == sizeof (DBusRealString));
145
146 _dbus_assert (str != NULL);
147
148 real = (DBusRealString*) str;
149
150 /* It's very important not to touch anything
151 * other than real->str if we're going to fail,
152 * since we also use this function to reset
153 * an existing string, e.g. in _dbus_string_steal_data()
154 */
155
156 real->str = dbus_malloc (_DBUS_STRING_ALLOCATION_PADDING + allocate_size);
157 if (real->str == NULL)
158 return FALSE;
159
160 real->allocated = _DBUS_STRING_ALLOCATION_PADDING + allocate_size;
161 real->len = 0;
162 real->str[real->len] = '\0';
163
164 real->constant = FALSE;
165 real->locked = FALSE;
166 real->valid = TRUE;
167 real->align_offset = 0;
168
169 fixup_alignment (real);
170
171 return TRUE;
172}
173
181 dbus_bool_t
182_dbus_string_init (DBusString *str)
183{
184 return _dbus_string_init_preallocated (str, 0);
185}
186
196 void
197_dbus_string_init_const (DBusString *str,
198 const char *value)
199{
200 _dbus_assert (value != NULL);
201
202 _dbus_string_init_const_len (str, value,
203 strlen (value));
204}
205
216 void
217_dbus_string_init_const_len (DBusString *str,
218 const char *value,
219 int len)
220{
221 DBusRealString *real;
222
223 _dbus_assert (str != NULL);
224 _dbus_assert (len == 0 || value != NULL);
225 _dbus_assert (len <= _DBUS_STRING_MAX_LENGTH);
226 _dbus_assert (len >= 0);
227
228 real = (DBusRealString*) str;
229
230 real->str = (unsigned char*) value;
231 real->len = len;
232 real->allocated = real->len + _DBUS_STRING_ALLOCATION_PADDING; /* a lie, just to avoid special-case assertions... */
233 real->constant = TRUE;
234 real->locked = TRUE;
235 real->valid = TRUE;
236 real->align_offset = 0;
237
238 /* We don't require const strings to be 8-byte aligned as the
239 * memory is coming from elsewhere.
240 */
241}
242
253 dbus_bool_t
254_dbus_string_init_from_string(DBusString *str,
255 const DBusString *from)
256{
257 if (!_dbus_string_init (str))
258 return FALSE;
259 if (!_dbus_string_append (str, _dbus_string_get_const_data (from)))
260 {
261 _dbus_string_free (str);
262 return FALSE;
263 }
264 return TRUE;
265}
266
277 void
278_dbus_string_free (DBusString *str)
279{
280 DBusRealString *real = (DBusRealString*) str;
281 /* DBusRealString and DBusString have the same members in the same order,
282 * just differently-named */
283 DBusRealString invalid = _DBUS_STRING_INIT_INVALID;
284
285 /* Allow for the _DBUS_STRING_INIT_INVALID case */
286 if (real->str == NULL && real->len == 0 && real->allocated == 0 &&
287 !real->constant && !real->locked && !real->valid &&
288 real->align_offset == 0)
289 return;
290
291 DBUS_GENERIC_STRING_PREAMBLE (real);
292
293 if (real->constant)
294 goto wipe;
295
296 /* so it's safe if @p str returned by a failed
297 * _dbus_string_init call
298 * Bug: https://bugs.freedesktop.org/show_bug.cgi?id=65959
299 */
300 if (real->str == NULL)
301 goto wipe;
302
303 dbus_free (real->str - real->align_offset);
304
305wipe:
306 *real = invalid;
307 real->valid = FALSE;
308}
309
310 static dbus_bool_t
311compact (DBusRealString *real,
312 int max_waste)
313{
314 unsigned char *new_str;
315 int new_allocated;
316 int waste;
317
318 waste = real->allocated - (real->len + _DBUS_STRING_ALLOCATION_PADDING);
319
320 if (waste <= max_waste)
321 return TRUE;
322
323 new_allocated = real->len + _DBUS_STRING_ALLOCATION_PADDING;
324
325 new_str = dbus_realloc (real->str - real->align_offset, new_allocated);
326 if (_DBUS_UNLIKELY (new_str == NULL))
327 return FALSE;
328
329 real->str = new_str + real->align_offset;
330 real->allocated = new_allocated;
331 fixup_alignment (real);
332
333 return TRUE;
334}
335
336#ifdef DBUS_ENABLE_EMBEDDED_TESTS
337/* Not using this feature at the moment,
338 * so marked DBUS_ENABLE_EMBEDDED_TESTS-only
339 */
349 void
350_dbus_string_lock (DBusString *str)
351{
352 DBUS_LOCKED_STRING_PREAMBLE (str); /* can lock multiple times */
353
354 real->locked = TRUE;
355
356 /* Try to realloc to avoid excess memory usage, since
357 * we know we won't change the string further
358 */
359#define MAX_WASTE 48
360 compact (real, MAX_WASTE);
361}
362#endif /* DBUS_ENABLE_EMBEDDED_TESTS */
363
364 static dbus_bool_t
365reallocate_for_length (DBusRealString *real,
366 int new_length)
367{
368 int new_allocated;
369 unsigned char *new_str;
370
371 /* at least double our old allocation to avoid O(n), avoiding
372 * overflow
373 */
374 if (real->allocated > (_DBUS_STRING_MAX_LENGTH + _DBUS_STRING_ALLOCATION_PADDING) / 2)
375 new_allocated = _DBUS_STRING_MAX_LENGTH + _DBUS_STRING_ALLOCATION_PADDING;
376 else
377 new_allocated = real->allocated * 2;
378
379 /* if you change the code just above here, run the tests without
380 * the following assert-only hack before you commit
381 */
382 /* This is keyed off asserts in addition to tests so when you
383 * disable asserts to profile, you don't get this destroyer
384 * of profiles.
385 */
386#if defined (DBUS_ENABLE_EMBEDDED_TESTS) && !defined (DBUS_DISABLE_ASSERT)
387 new_allocated = 0; /* ensure a realloc every time so that we go
388 * through all malloc failure codepaths
389 */
390#endif
391
392 /* But be sure we always alloc at least space for the new length */
393 new_allocated = MAX (new_allocated,
394 new_length + _DBUS_STRING_ALLOCATION_PADDING);
395
396 _dbus_assert (new_allocated >= real->allocated); /* code relies on this */
397 new_str = dbus_realloc (real->str - real->align_offset, new_allocated);
398 if (_DBUS_UNLIKELY (new_str == NULL))
399 return FALSE;
400
401 real->str = new_str + real->align_offset;
402 real->allocated = new_allocated;
403 fixup_alignment (real);
404
405 return TRUE;
406}
407
419 dbus_bool_t
420_dbus_string_compact (DBusString *str,
421 int max_waste)
422{
423 DBUS_STRING_PREAMBLE (str);
424
425 return compact (real, max_waste);
426}
427
428 static dbus_bool_t
429set_length (DBusRealString *real,
430 int new_length)
431{
432 /* Note, we are setting the length not including nul termination */
433
434 /* exceeding max length is the same as failure to allocate memory */
435 if (_DBUS_UNLIKELY (new_length > _DBUS_STRING_MAX_LENGTH))
436 return FALSE;
437 else if (new_length > (real->allocated - _DBUS_STRING_ALLOCATION_PADDING) &&
438 _DBUS_UNLIKELY (!reallocate_for_length (real, new_length)))
439 return FALSE;
440 else
441 {
442 real->len = new_length;
443 real->str[new_length] = '\0';
444 return TRUE;
445 }
446}
447
448 static dbus_bool_t
449open_gap (int len,
450 DBusRealString *dest,
451 int insert_at)
452{
453 if (len == 0)
454 return TRUE;
455
456 if (len > _DBUS_STRING_MAX_LENGTH - dest->len)
457 return FALSE; /* detected overflow of dest->len + len below */
458
459 if (!set_length (dest, dest->len + len))
460 return FALSE;
461
462 memmove (dest->str + insert_at + len,
463 dest->str + insert_at,
464 dest->len - len - insert_at);
465
466 return TRUE;
467}
468
475 int
476_dbus_string_get_allocated_size (const DBusString *str)
477{
478 DBUS_CONST_STRING_PREAMBLE (str);
479
480 return real->allocated;
481}
482
483#ifndef _dbus_string_get_data
495 char*
496_dbus_string_get_data (DBusString *str)
497{
498 DBUS_STRING_PREAMBLE (str);
499
500 return (char*) real->str;
501}
502#endif /* _dbus_string_get_data */
503
504/* only do the function if we don't have the macro */
505#ifndef _dbus_string_get_const_data
512 const char*
513_dbus_string_get_const_data (const DBusString *str)
514{
515 DBUS_CONST_STRING_PREAMBLE (str);
516
517 return (const char*) real->str;
518}
519#endif /* _dbus_string_get_const_data */
520
534 char*
535_dbus_string_get_data_len (DBusString *str,
536 int start,
537 int len)
538{
539 DBUS_STRING_PREAMBLE (str);
540 _dbus_assert (start >= 0);
541 _dbus_assert (len >= 0);
542 _dbus_assert (start <= real->len);
543 _dbus_assert (len <= real->len - start);
544
545 return (char*) real->str + start;
546}
547
548/* only do the function if we don't have the macro */
549#ifndef _dbus_string_get_const_data_len
558 const char*
559_dbus_string_get_const_data_len (const DBusString *str,
560 int start,
561 int len)
562{
563 DBUS_CONST_STRING_PREAMBLE (str);
564 _dbus_assert (start >= 0);
565 _dbus_assert (len >= 0);
566 _dbus_assert (start <= real->len);
567 _dbus_assert (len <= real->len - start);
568
569 return (const char*) real->str + start;
570}
571#endif /* _dbus_string_get_const_data_len */
572
573/* only do the function if we don't have the macro */
574#ifndef _dbus_string_set_byte
582 void
583_dbus_string_set_byte (DBusString *str,
584 int i,
585 unsigned char byte)
586{
587 DBUS_STRING_PREAMBLE (str);
588 _dbus_assert (i < real->len);
589 _dbus_assert (i >= 0);
590
591 real->str[i] = byte;
592}
593#endif /* _dbus_string_set_byte */
594
595/* only have the function if we didn't create a macro */
596#ifndef _dbus_string_get_byte
606 unsigned char
607_dbus_string_get_byte (const DBusString *str,
608 int start)
609{
610 DBUS_CONST_STRING_PREAMBLE (str);
611 _dbus_assert (start <= real->len);
612 _dbus_assert (start >= 0);
613
614 return real->str[start];
615}
616#endif /* _dbus_string_get_byte */
617
628 dbus_bool_t
629_dbus_string_insert_bytes (DBusString *str,
630 int i,
631 int n_bytes,
632 unsigned char byte)
633{
634 DBUS_STRING_PREAMBLE (str);
635 _dbus_assert (i <= real->len);
636 _dbus_assert (i >= 0);
637 _dbus_assert (n_bytes >= 0);
638
639 if (n_bytes == 0)
640 return TRUE;
641
642 if (!open_gap (n_bytes, real, i))
643 return FALSE;
644
645 memset (real->str + i, byte, n_bytes);
646
647 return TRUE;
648}
649
658 dbus_bool_t
659_dbus_string_insert_byte (DBusString *str,
660 int i,
661 unsigned char byte)
662{
663 DBUS_STRING_PREAMBLE (str);
664 _dbus_assert (i <= real->len);
665 _dbus_assert (i >= 0);
666
667 if (!open_gap (1, real, i))
668 return FALSE;
669
670 real->str[i] = byte;
671
672 return TRUE;
673}
674
685 dbus_bool_t
686_dbus_string_steal_data (DBusString *str,
687 char **data_return)
688{
689 DBUS_STRING_PREAMBLE (str);
690 _dbus_assert (data_return != NULL);
691
692 undo_alignment (real);
693
694 *data_return = (char*) real->str;
695
696 /* reset the string */
697 if (!_dbus_string_init (str))
698 {
699 /* hrm, put it back then */
700 real->str = (unsigned char*) *data_return;
701 *data_return = NULL;
702 fixup_alignment (real);
703 return FALSE;
704 }
705
706 return TRUE;
707}
708
716 dbus_bool_t
717_dbus_string_copy_data (const DBusString *str,
718 char **data_return)
719{
720 DBUS_CONST_STRING_PREAMBLE (str);
721 _dbus_assert (data_return != NULL);
722
723 *data_return = dbus_malloc (real->len + 1);
724 if (*data_return == NULL)
725 return FALSE;
726
727 memcpy (*data_return, real->str, real->len + 1);
728
729 return TRUE;
730}
731
741 void
742_dbus_string_copy_to_buffer (const DBusString *str,
743 char *buffer,
744 int avail_len)
745{
746 DBUS_CONST_STRING_PREAMBLE (str);
747
748 _dbus_assert (avail_len >= 0);
749 _dbus_assert (avail_len >= real->len);
750
751 memcpy (buffer, real->str, real->len);
752}
753
763 void
764_dbus_string_copy_to_buffer_with_nul (const DBusString *str,
765 char *buffer,
766 int avail_len)
767{
768 DBUS_CONST_STRING_PREAMBLE (str);
769
770 _dbus_assert (avail_len >= 0);
771 _dbus_assert (avail_len > real->len);
772
773 memcpy (buffer, real->str, real->len+1);
774}
775
776/* Only have the function if we don't have the macro */
777#ifndef _dbus_string_get_length
783 int
784_dbus_string_get_length (const DBusString *str)
785{
786 DBUS_CONST_STRING_PREAMBLE (str);
787
788 return real->len;
789}
790#endif /* !_dbus_string_get_length */
791
804 dbus_bool_t
805_dbus_string_lengthen (DBusString *str,
806 int additional_length)
807{
808 DBUS_STRING_PREAMBLE (str);
809 _dbus_assert (additional_length >= 0);
810
811 if (_DBUS_UNLIKELY (additional_length > _DBUS_STRING_MAX_LENGTH - real->len))
812 return FALSE; /* would overflow */
813
814 return set_length (real,
815 real->len + additional_length);
816}
817
824 void
825_dbus_string_shorten (DBusString *str,
826 int length_to_remove)
827{
828 DBUS_STRING_PREAMBLE (str);
829 _dbus_assert (length_to_remove >= 0);
830 _dbus_assert (length_to_remove <= real->len);
831
832 set_length (real,
833 real->len - length_to_remove);
834}
835
846 dbus_bool_t
847_dbus_string_set_length (DBusString *str,
848 int length)
849{
850 DBUS_STRING_PREAMBLE (str);
851 _dbus_assert (length >= 0);
852
853 return set_length (real, length);
854}
855
856 static dbus_bool_t
857align_insert_point_then_open_gap (DBusString *str,
858 int *insert_at_p,
859 int alignment,
860 int gap_size)
861{
862 unsigned long new_len; /* ulong to avoid _DBUS_ALIGN_VALUE overflow */
863 unsigned long gap_pos;
864 int insert_at;
865 int delta;
866 DBUS_STRING_PREAMBLE (str);
867 _dbus_assert (alignment >= 1);
868 _dbus_assert (alignment <= 8); /* it has to be a bug if > 8 */
869
870 insert_at = *insert_at_p;
871
872 _dbus_assert (insert_at <= real->len);
873
874 gap_pos = _DBUS_ALIGN_VALUE (insert_at, alignment);
875 new_len = real->len + (gap_pos - insert_at) + gap_size;
876
877 if (_DBUS_UNLIKELY (new_len > (unsigned long) _DBUS_STRING_MAX_LENGTH))
878 return FALSE;
879
880 delta = new_len - real->len;
881 _dbus_assert (delta >= 0);
882
883 if (delta == 0) /* only happens if gap_size == 0 and insert_at is aligned already */
884 {
885 _dbus_assert (((unsigned long) *insert_at_p) == gap_pos);
886 return TRUE;
887 }
888
889 if (_DBUS_UNLIKELY (!open_gap (new_len - real->len,
890 real, insert_at)))
891 return FALSE;
892
893 /* nul the padding if we had to add any padding */
894 if (gap_size < delta)
895 {
896 memset (&real->str[insert_at], '\0',
897 gap_pos - insert_at);
898 }
899
900 *insert_at_p = gap_pos;
901
902 return TRUE;
903}
904
905 static dbus_bool_t
906align_length_then_lengthen (DBusString *str,
907 int alignment,
908 int then_lengthen_by)
909{
910 int insert_at;
911
912 insert_at = _dbus_string_get_length (str);
913
914 return align_insert_point_then_open_gap (str,
915 &insert_at,
916 alignment, then_lengthen_by);
917}
918
927 dbus_bool_t
928_dbus_string_align_length (DBusString *str,
929 int alignment)
930{
931 return align_length_then_lengthen (str, alignment, 0);
932}
933
943 dbus_bool_t
944_dbus_string_alloc_space (DBusString *str,
945 int extra_bytes)
946{
947 if (!_dbus_string_lengthen (str, extra_bytes))
948 return FALSE;
949 _dbus_string_shorten (str, extra_bytes);
950
951 return TRUE;
952}
953
954 static dbus_bool_t
955append (DBusRealString *real,
956 const char *buffer,
957 int buffer_len)
958{
959 if (buffer_len == 0)
960 return TRUE;
961
962 if (!_dbus_string_lengthen ((DBusString*)real, buffer_len))
963 return FALSE;
964
965 memcpy (real->str + (real->len - buffer_len),
966 buffer,
967 buffer_len);
968
969 return TRUE;
970}
971
979 dbus_bool_t
980_dbus_string_append (DBusString *str,
981 const char *buffer)
982{
983 unsigned long buffer_len;
984
985 DBUS_STRING_PREAMBLE (str);
986 _dbus_assert (buffer != NULL);
987
988 buffer_len = strlen (buffer);
989 if (buffer_len > (unsigned long) _DBUS_STRING_MAX_LENGTH)
990 return FALSE;
991
992 return append (real, buffer, buffer_len);
993}
994
1004 dbus_bool_t
1005_dbus_string_insert_2_aligned (DBusString *str,
1006 int insert_at,
1007 const unsigned char octets[2])
1008{
1009 DBUS_STRING_PREAMBLE (str);
1010
1011 if (!align_insert_point_then_open_gap (str, &insert_at, 2, 2))
1012 return FALSE;
1013
1014 memcpy (real->str + insert_at, octets, 2);
1015
1016 return TRUE;
1017}
1018
1028 dbus_bool_t
1029_dbus_string_insert_4_aligned (DBusString *str,
1030 int insert_at,
1031 const unsigned char octets[4])
1032{
1033 DBUS_STRING_PREAMBLE (str);
1034
1035 if (!align_insert_point_then_open_gap (str, &insert_at, 4, 4))
1036 return FALSE;
1037
1038 memcpy (real->str + insert_at, octets, 4);
1039
1040 return TRUE;
1041}
1042
1052 dbus_bool_t
1053_dbus_string_insert_8_aligned (DBusString *str,
1054 int insert_at,
1055 const unsigned char octets[8])
1056{
1057 DBUS_STRING_PREAMBLE (str);
1058
1059 if (!align_insert_point_then_open_gap (str, &insert_at, 8, 8))
1060 return FALSE;
1061
1062 _dbus_assert (_DBUS_ALIGN_VALUE (insert_at, 8) == (unsigned) insert_at);
1063
1064 memcpy (real->str + insert_at, octets, 8);
1065
1066 return TRUE;
1067}
1068
1069
1080 dbus_bool_t
1081_dbus_string_insert_alignment (DBusString *str,
1082 int *insert_at,
1083 int alignment)
1084{
1085 DBUS_STRING_PREAMBLE (str);
1086
1087 if (!align_insert_point_then_open_gap (str, insert_at, alignment, 0))
1088 return FALSE;
1089
1090 _dbus_assert (_DBUS_ALIGN_VALUE (*insert_at, alignment) == (unsigned) *insert_at);
1091
1092 return TRUE;
1093}
1094
1104 dbus_bool_t
1105_dbus_string_append_printf_valist (DBusString *str,
1106 const char *format,
1107 va_list args)
1108{
1109 dbus_bool_t ret = FALSE;
1110 int len;
1111 va_list args_copy;
1112
1113 DBUS_STRING_PREAMBLE (str);
1114
1115 va_copy (args_copy, args);
1116
1117 /* Measure the message length without terminating nul */
1118 len = _dbus_printf_string_upper_bound (format, args);
1119
1120 if (len < 0)
1121 goto out;
1122
1123 if (!_dbus_string_lengthen (str, len))
1124 {
1125 goto out;
1126 }
1127
1128 vsprintf ((char*) (real->str + (real->len - len)),
1129 format, args_copy);
1130 ret = TRUE;
1131
1132out:
1133 va_end (args_copy);
1134
1135 return ret;
1136}
1137
1146 dbus_bool_t
1147_dbus_string_append_printf (DBusString *str,
1148 const char *format,
1149 ...)
1150{
1151 va_list args;
1152 dbus_bool_t retval;
1153
1154 va_start (args, format);
1155 retval = _dbus_string_append_printf_valist (str, format, args);
1156 va_end (args);
1157
1158 return retval;
1159}
1160
1169 dbus_bool_t
1170_dbus_string_append_len (DBusString *str,
1171 const char *buffer,
1172 int len)
1173{
1174 DBUS_STRING_PREAMBLE (str);
1175 _dbus_assert (buffer != NULL);
1176 _dbus_assert (len >= 0);
1177
1178 return append (real, buffer, len);
1179}
1180
1189 dbus_bool_t
1190_dbus_string_append_byte (DBusString *str,
1191 unsigned char byte)
1192{
1193 DBUS_STRING_PREAMBLE (str);
1194
1195 if (!set_length (real, real->len + 1))
1196 return FALSE;
1197
1198 real->str[real->len-1] = byte;
1199
1200 return TRUE;
1201}
1202
1212 dbus_bool_t
1213_dbus_string_append_strings (DBusString *str, char **strings, char separator)
1214{
1215 int i;
1216
1217 if (strings == NULL)
1218 return TRUE;
1219
1220 for (i = 0; strings[i]; i++)
1221 {
1222 if (i > 0 && !_dbus_string_append_byte (str, (unsigned char) separator))
1223 return FALSE;
1224
1225 if (!_dbus_string_append (str, strings[i]))
1226 return FALSE;
1227 }
1228
1229 return TRUE;
1230}
1231
1232 static void
1233 delete (DBusRealString *real,
1234 int start,
1235 int len)
1236{
1237 if (len == 0)
1238 return;
1239
1240 memmove (real->str + start, real->str + start + len, real->len - (start + len));
1241 real->len -= len;
1242 real->str[real->len] = '\0';
1243}
1244
1254 void
1255_dbus_string_delete (DBusString *str,
1256 int start,
1257 int len)
1258{
1259 DBUS_STRING_PREAMBLE (str);
1260 _dbus_assert (start >= 0);
1261 _dbus_assert (len >= 0);
1262 _dbus_assert (start <= real->len);
1263 _dbus_assert (len <= real->len - start);
1264
1265 delete (real, start, len);
1266}
1267
1268 static dbus_bool_t
1269copy (DBusRealString *source,
1270 int start,
1271 int len,
1272 DBusRealString *dest,
1273 int insert_at)
1274{
1275 if (len == 0)
1276 return TRUE;
1277
1278 if (!open_gap (len, dest, insert_at))
1279 return FALSE;
1280
1281 memmove (dest->str + insert_at,
1282 source->str + start,
1283 len);
1284
1285 return TRUE;
1286}
1287
1297#define DBUS_STRING_COPY_PREAMBLE(source, start, dest, insert_at) \
1298 DBusRealString *real_source = (DBusRealString*) source; \
1299 DBusRealString *real_dest = (DBusRealString*) dest; \
1300 _dbus_assert ((source) != (dest)); \
1301 DBUS_GENERIC_STRING_PREAMBLE (real_source); \
1302 DBUS_GENERIC_STRING_PREAMBLE (real_dest); \
1303 _dbus_assert (!real_dest->constant); \
1304 _dbus_assert (!real_dest->locked); \
1305 _dbus_assert ((start) >= 0); \
1306 _dbus_assert ((start) <= real_source->len); \
1307 _dbus_assert ((insert_at) >= 0); \
1308 _dbus_assert ((insert_at) <= real_dest->len)
1309
1320 dbus_bool_t
1321_dbus_string_move (DBusString *source,
1322 int start,
1323 DBusString *dest,
1324 int insert_at)
1325{
1326 DBusRealString *real_source = (DBusRealString*) source;
1327 _dbus_assert (start <= real_source->len);
1328
1329 return _dbus_string_move_len (source, start,
1330 real_source->len - start,
1331 dest, insert_at);
1332}
1333
1344 dbus_bool_t
1345_dbus_string_copy (const DBusString *source,
1346 int start,
1347 DBusString *dest,
1348 int insert_at)
1349{
1350 DBUS_STRING_COPY_PREAMBLE (source, start, dest, insert_at);
1351
1352 return copy (real_source, start,
1353 real_source->len - start,
1354 real_dest,
1355 insert_at);
1356}
1357
1369 dbus_bool_t
1370_dbus_string_move_len (DBusString *source,
1371 int start,
1372 int len,
1373 DBusString *dest,
1374 int insert_at)
1375
1376{
1377 DBUS_STRING_COPY_PREAMBLE (source, start, dest, insert_at);
1378 _dbus_assert (len >= 0);
1379 _dbus_assert ((start + len) <= real_source->len);
1380
1381
1382 if (len == 0)
1383 {
1384 return TRUE;
1385 }
1386 else if (start == 0 &&
1387 len == real_source->len &&
1388 real_dest->len == 0)
1389 {
1390 /* Short-circuit moving an entire existing string to an empty string
1391 * by just swapping the buffers.
1392 */
1393 /* we assume ->constant doesn't matter as you can't have
1394 * a constant string involved in a move.
1395 */
1396#define ASSIGN_DATA(a, b) do { \
1397 (a)->str = (b)->str; \
1398 (a)->len = (b)->len; \
1399 (a)->allocated = (b)->allocated; \
1400 (a)->align_offset = (b)->align_offset; \
1401 } while (0)
1402
1403 DBusRealString tmp;
1404
1405 ASSIGN_DATA (&tmp, real_source);
1406 ASSIGN_DATA (real_source, real_dest);
1407 ASSIGN_DATA (real_dest, &tmp);
1408
1409 return TRUE;
1410 }
1411 else
1412 {
1413 if (!copy (real_source, start, len,
1414 real_dest,
1415 insert_at))
1416 return FALSE;
1417
1418 delete (real_source, start,
1419 len);
1420
1421 return TRUE;
1422 }
1423}
1424
1436 dbus_bool_t
1437_dbus_string_copy_len (const DBusString *source,
1438 int start,
1439 int len,
1440 DBusString *dest,
1441 int insert_at)
1442{
1443 DBUS_STRING_COPY_PREAMBLE (source, start, dest, insert_at);
1444 _dbus_assert (len >= 0);
1445 _dbus_assert (start <= real_source->len);
1446 _dbus_assert (len <= real_source->len - start);
1447
1448 return copy (real_source, start, len,
1449 real_dest,
1450 insert_at);
1451}
1452
1465 dbus_bool_t
1466_dbus_string_replace_len (const DBusString *source,
1467 int start,
1468 int len,
1469 DBusString *dest,
1470 int replace_at,
1471 int replace_len)
1472{
1473 DBUS_STRING_COPY_PREAMBLE (source, start, dest, replace_at);
1474 _dbus_assert (len >= 0);
1475 _dbus_assert (start <= real_source->len);
1476 _dbus_assert (len <= real_source->len - start);
1477 _dbus_assert (replace_at >= 0);
1478 _dbus_assert (replace_at <= real_dest->len);
1479 _dbus_assert (replace_len <= real_dest->len - replace_at);
1480
1481 if (len == replace_len)
1482 {
1483 memmove (real_dest->str + replace_at,
1484 real_source->str + start, len);
1485 }
1486 else if (len < replace_len)
1487 {
1488 memmove (real_dest->str + replace_at,
1489 real_source->str + start, len);
1490 delete (real_dest, replace_at + len,
1491 replace_len - len);
1492 }
1493 else
1494 {
1495 int diff;
1496
1497 _dbus_assert (len > replace_len);
1498
1499 diff = len - replace_len;
1500
1501 /* First of all we check if destination string can be enlarged as
1502 * required, then we overwrite previous bytes
1503 */
1504
1505 if (!copy (real_source, start + replace_len, diff,
1506 real_dest, replace_at + replace_len))
1507 return FALSE;
1508
1509 memmove (real_dest->str + replace_at,
1510 real_source->str + start, replace_len);
1511 }
1512
1513 return TRUE;
1514}
1515
1528 dbus_bool_t
1529_dbus_string_split_on_byte (DBusString *source,
1530 unsigned char byte,
1531 DBusString *tail)
1532{
1533 int byte_position;
1534 char byte_string[2] = "";
1535 int head_length;
1536 int tail_length;
1537
1538 byte_string[0] = (char) byte;
1539
1540 if (!_dbus_string_find (source, 0, byte_string, &byte_position))
1541 return FALSE;
1542
1543 head_length = byte_position;
1544 tail_length = _dbus_string_get_length (source) - head_length - 1;
1545
1546 if (!_dbus_string_move_len (source, byte_position + 1, tail_length,
1547 tail, 0))
1548 return FALSE;
1549
1550 /* remove the trailing delimiter byte from the head now.
1551 */
1552 if (!_dbus_string_set_length (source, head_length))
1553 return FALSE;
1554
1555 return TRUE;
1556}
1557
1558/* Unicode macros and utf8_validate() from GLib Owen Taylor, Havoc
1559 * Pennington, and Tom Tromey are the authors and authorized relicense.
1560 */
1561
1567#define UTF8_COMPUTE(Char, Mask, Len) \
1568 if (Char < 128) \
1569 { \
1570 Len = 1; \
1571 Mask = 0x7f; \
1572 } \
1573 else if ((Char & 0xe0) == 0xc0) \
1574 { \
1575 Len = 2; \
1576 Mask = 0x1f; \
1577 } \
1578 else if ((Char & 0xf0) == 0xe0) \
1579 { \
1580 Len = 3; \
1581 Mask = 0x0f; \
1582 } \
1583 else if ((Char & 0xf8) == 0xf0) \
1584 { \
1585 Len = 4; \
1586 Mask = 0x07; \
1587 } \
1588 else if ((Char & 0xfc) == 0xf8) \
1589 { \
1590 Len = 5; \
1591 Mask = 0x03; \
1592 } \
1593 else if ((Char & 0xfe) == 0xfc) \
1594 { \
1595 Len = 6; \
1596 Mask = 0x01; \
1597 } \
1598 else \
1599 { \
1600 Len = 0; \
1601 Mask = 0; \
1602 }
1603
1608#define UTF8_LENGTH(Char) \
1609 ((Char) < 0x80 ? 1 : \
1610 ((Char) < 0x800 ? 2 : \
1611 ((Char) < 0x10000 ? 3 : \
1612 ((Char) < 0x200000 ? 4 : \
1613 ((Char) < 0x4000000 ? 5 : 6)))))
1614
1624#define UTF8_GET(Result, Chars, Count, Mask, Len) \
1625 (Result) = (Chars)[0] & (Mask); \
1626 for ((Count) = 1; (Count) < (Len); ++(Count)) \
1627 { \
1628 if (((Chars)[(Count)] & 0xc0) != 0x80) \
1629 { \
1630 (Result) = -1; \
1631 break; \
1632 } \
1633 (Result) <<= 6; \
1634 (Result) |= ((Chars)[(Count)] & 0x3f); \
1635 }
1636
1647#define UNICODE_VALID(Char) \
1648 ((Char) < 0x110000 && \
1649 (((Char) & 0xFFFFF800) != 0xD800))
1650
1665 dbus_bool_t
1666_dbus_string_find (const DBusString *str,
1667 int start,
1668 const char *substr,
1669 int *found)
1670{
1671 return _dbus_string_find_to (str, start,
1672 ((const DBusRealString*)str)->len,
1673 substr, found);
1674}
1675
1688 dbus_bool_t
1689_dbus_string_find_eol (const DBusString *str,
1690 int start,
1691 int *found,
1692 int *found_len)
1693{
1694 int i;
1695
1696 DBUS_CONST_STRING_PREAMBLE (str);
1697 _dbus_assert (start <= real->len);
1698 _dbus_assert (start >= 0);
1699
1700 i = start;
1701 while (i < real->len)
1702 {
1703 if (real->str[i] == '\r')
1704 {
1705 if ((i+1) < real->len && real->str[i+1] == '\n') /* "\r\n" */
1706 {
1707 if (found)
1708 *found = i;
1709 if (found_len)
1710 *found_len = 2;
1711 return TRUE;
1712 }
1713 else /* only "\r" */
1714 {
1715 if (found)
1716 *found = i;
1717 if (found_len)
1718 *found_len = 1;
1719 return TRUE;
1720 }
1721 }
1722 else if (real->str[i] == '\n') /* only "\n" */
1723 {
1724 if (found)
1725 *found = i;
1726 if (found_len)
1727 *found_len = 1;
1728 return TRUE;
1729 }
1730 ++i;
1731 }
1732
1733 if (found)
1734 *found = real->len;
1735
1736 if (found_len)
1737 *found_len = 0;
1738
1739 return FALSE;
1740}
1741
1758 dbus_bool_t
1759_dbus_string_find_to (const DBusString *str,
1760 int start,
1761 int end,
1762 const char *substr,
1763 int *found)
1764{
1765 int i;
1766 DBUS_CONST_STRING_PREAMBLE (str);
1767 _dbus_assert (substr != NULL);
1768 _dbus_assert (start <= real->len);
1769 _dbus_assert (start >= 0);
1770 _dbus_assert (substr != NULL);
1771 _dbus_assert (end <= real->len);
1772 _dbus_assert (start <= end);
1773
1774 /* we always "find" an empty string */
1775 if (*substr == '\0')
1776 {
1777 if (found)
1778 *found = start;
1779 return TRUE;
1780 }
1781
1782 i = start;
1783 while (i < end)
1784 {
1785 if (real->str[i] == substr[0])
1786 {
1787 int j = i + 1;
1788
1789 while (j < end)
1790 {
1791 if (substr[j - i] == '\0')
1792 break;
1793 else if (real->str[j] != substr[j - i])
1794 break;
1795
1796 ++j;
1797 }
1798
1799 if (substr[j - i] == '\0')
1800 {
1801 if (found)
1802 *found = i;
1803 return TRUE;
1804 }
1805 }
1806
1807 ++i;
1808 }
1809
1810 if (found)
1811 *found = end;
1812
1813 return FALSE;
1814}
1815
1826 dbus_bool_t
1827_dbus_string_find_blank (const DBusString *str,
1828 int start,
1829 int *found)
1830{
1831 int i;
1832 DBUS_CONST_STRING_PREAMBLE (str);
1833 _dbus_assert (start <= real->len);
1834 _dbus_assert (start >= 0);
1835
1836 i = start;
1837 while (i < real->len)
1838 {
1839 if (real->str[i] == ' ' ||
1840 real->str[i] == '\t')
1841 {
1842 if (found)
1843 *found = i;
1844 return TRUE;
1845 }
1846
1847 ++i;
1848 }
1849
1850 if (found)
1851 *found = real->len;
1852
1853 return FALSE;
1854}
1855
1864 void
1865_dbus_string_skip_blank (const DBusString *str,
1866 int start,
1867 int *end)
1868{
1869 int i;
1870 DBUS_CONST_STRING_PREAMBLE (str);
1871 _dbus_assert (start <= real->len);
1872 _dbus_assert (start >= 0);
1873
1874 i = start;
1875 while (i < real->len)
1876 {
1877 if (!DBUS_IS_ASCII_BLANK (real->str[i]))
1878 break;
1879
1880 ++i;
1881 }
1882
1883 _dbus_assert (i == real->len || !DBUS_IS_ASCII_BLANK (real->str[i]));
1884
1885 if (end)
1886 *end = i;
1887}
1888
1889
1898 void
1899_dbus_string_skip_white (const DBusString *str,
1900 int start,
1901 int *end)
1902{
1903 int i;
1904 DBUS_CONST_STRING_PREAMBLE (str);
1905 _dbus_assert (start <= real->len);
1906 _dbus_assert (start >= 0);
1907
1908 i = start;
1909 while (i < real->len)
1910 {
1911 if (!DBUS_IS_ASCII_WHITE (real->str[i]))
1912 break;
1913
1914 ++i;
1915 }
1916
1917 _dbus_assert (i == real->len || !(DBUS_IS_ASCII_WHITE (real->str[i])));
1918
1919 if (end)
1920 *end = i;
1921}
1922
1931 void
1932_dbus_string_skip_white_reverse (const DBusString *str,
1933 int end,
1934 int *start)
1935{
1936 int i;
1937 DBUS_CONST_STRING_PREAMBLE (str);
1938 _dbus_assert (end <= real->len);
1939 _dbus_assert (end >= 0);
1940
1941 i = end;
1942 while (i > 0)
1943 {
1944 if (!DBUS_IS_ASCII_WHITE (real->str[i-1]))
1945 break;
1946 --i;
1947 }
1948
1949 _dbus_assert (i >= 0 && (i == 0 || !(DBUS_IS_ASCII_WHITE (real->str[i-1]))));
1950
1951 if (start)
1952 *start = i;
1953}
1954
1970 dbus_bool_t
1971_dbus_string_pop_line (DBusString *source,
1972 DBusString *dest)
1973{
1974 int eol, eol_len;
1975
1976 _dbus_string_set_length (dest, 0);
1977
1978 eol = 0;
1979 eol_len = 0;
1980 if (!_dbus_string_find_eol (source, 0, &eol, &eol_len))
1981 {
1982 _dbus_assert (eol == _dbus_string_get_length (source));
1983 if (eol == 0)
1984 {
1985 /* If there's no newline and source has zero length, we're done */
1986 return FALSE;
1987 }
1988 /* otherwise, the last line of the file has no eol characters */
1989 }
1990
1991 /* remember eol can be 0 if it's an empty line, but eol_len should not be zero also
1992 * since find_eol returned TRUE
1993 */
1994
1995 if (!_dbus_string_move_len (source, 0, eol + eol_len, dest, 0))
1996 return FALSE;
1997
1998 /* remove line ending */
1999 if (!_dbus_string_set_length (dest, eol))
2000 {
2001 _dbus_assert_not_reached ("out of memory when shortening a string");
2002 return FALSE;
2003 }
2004
2005 return TRUE;
2006}
2007
2008#ifdef DBUS_ENABLE_EMBEDDED_TESTS
2015 void
2016_dbus_string_delete_first_word (DBusString *str)
2017{
2018 int i;
2019
2020 if (_dbus_string_find_blank (str, 0, &i))
2021 _dbus_string_skip_blank (str, i, &i);
2022
2023 _dbus_string_delete (str, 0, i);
2024}
2025#endif
2026
2027#ifdef DBUS_ENABLE_EMBEDDED_TESTS
2033 void
2034_dbus_string_delete_leading_blanks (DBusString *str)
2035{
2036 int i;
2037
2038 _dbus_string_skip_blank (str, 0, &i);
2039
2040 if (i > 0)
2041 _dbus_string_delete (str, 0, i);
2042}
2043#endif
2044
2050 void
2051_dbus_string_chop_white(DBusString *str)
2052{
2053 int i;
2054
2055 _dbus_string_skip_white (str, 0, &i);
2056
2057 if (i > 0)
2058 _dbus_string_delete (str, 0, i);
2059
2060 _dbus_string_skip_white_reverse (str, _dbus_string_get_length (str), &i);
2061
2062 _dbus_string_set_length (str, i);
2063}
2064
2074 dbus_bool_t
2075_dbus_string_equal (const DBusString *a,
2076 const DBusString *b)
2077{
2078 const unsigned char *ap;
2079 const unsigned char *bp;
2080 const unsigned char *a_end;
2081 const DBusRealString *real_a = (const DBusRealString*) a;
2082 const DBusRealString *real_b = (const DBusRealString*) b;
2083 DBUS_GENERIC_STRING_PREAMBLE (real_a);
2084 DBUS_GENERIC_STRING_PREAMBLE (real_b);
2085
2086 if (real_a->len != real_b->len)
2087 return FALSE;
2088
2089 ap = real_a->str;
2090 bp = real_b->str;
2091 a_end = real_a->str + real_a->len;
2092 while (ap != a_end)
2093 {
2094 if (*ap != *bp)
2095 return FALSE;
2096
2097 ++ap;
2098 ++bp;
2099 }
2100
2101 return TRUE;
2102}
2103
2117 dbus_bool_t
2118_dbus_string_equal_len (const DBusString *a,
2119 const DBusString *b,
2120 int len)
2121{
2122 const unsigned char *ap;
2123 const unsigned char *bp;
2124 const unsigned char *a_end;
2125 const DBusRealString *real_a = (const DBusRealString*) a;
2126 const DBusRealString *real_b = (const DBusRealString*) b;
2127 DBUS_GENERIC_STRING_PREAMBLE (real_a);
2128 DBUS_GENERIC_STRING_PREAMBLE (real_b);
2129
2130 if (real_a->len != real_b->len &&
2131 (real_a->len < len || real_b->len < len))
2132 return FALSE;
2133
2134 ap = real_a->str;
2135 bp = real_b->str;
2136 a_end = real_a->str + MIN (real_a->len, len);
2137 while (ap != a_end)
2138 {
2139 if (*ap != *bp)
2140 return FALSE;
2141
2142 ++ap;
2143 ++bp;
2144 }
2145
2146 return TRUE;
2147}
2148
2165 dbus_bool_t
2166_dbus_string_equal_substring (const DBusString *a,
2167 int a_start,
2168 int a_len,
2169 const DBusString *b,
2170 int b_start)
2171{
2172 const unsigned char *ap;
2173 const unsigned char *bp;
2174 const unsigned char *a_end;
2175 const DBusRealString *real_a = (const DBusRealString*) a;
2176 const DBusRealString *real_b = (const DBusRealString*) b;
2177 DBUS_GENERIC_STRING_PREAMBLE (real_a);
2178 DBUS_GENERIC_STRING_PREAMBLE (real_b);
2179 _dbus_assert (a_start >= 0);
2180 _dbus_assert (a_len >= 0);
2181 _dbus_assert (a_start <= real_a->len);
2182 _dbus_assert (a_len <= real_a->len - a_start);
2183 _dbus_assert (b_start >= 0);
2184 _dbus_assert (b_start <= real_b->len);
2185
2186 if (a_len > real_b->len - b_start)
2187 return FALSE;
2188
2189 ap = real_a->str + a_start;
2190 bp = real_b->str + b_start;
2191 a_end = ap + a_len;
2192 while (ap != a_end)
2193 {
2194 if (*ap != *bp)
2195 return FALSE;
2196
2197 ++ap;
2198 ++bp;
2199 }
2200
2201 _dbus_assert (bp <= (real_b->str + real_b->len));
2202
2203 return TRUE;
2204}
2205
2213 dbus_bool_t
2214_dbus_string_equal_c_str (const DBusString *a,
2215 const char *c_str)
2216{
2217 const unsigned char *ap;
2218 const unsigned char *bp;
2219 const unsigned char *a_end;
2220 const DBusRealString *real_a = (const DBusRealString*) a;
2221 DBUS_GENERIC_STRING_PREAMBLE (real_a);
2222 _dbus_assert (c_str != NULL);
2223
2224 ap = real_a->str;
2225 bp = (const unsigned char*) c_str;
2226 a_end = real_a->str + real_a->len;
2227 while (ap != a_end && *bp)
2228 {
2229 if (*ap != *bp)
2230 return FALSE;
2231
2232 ++ap;
2233 ++bp;
2234 }
2235
2236 if (ap != a_end || *bp)
2237 return FALSE;
2238
2239 return TRUE;
2240}
2241
2249 dbus_bool_t
2250_dbus_string_starts_with_c_str (const DBusString *a,
2251 const char *c_str)
2252{
2253 const unsigned char *ap;
2254 const unsigned char *bp;
2255 const unsigned char *a_end;
2256 const DBusRealString *real_a = (const DBusRealString*) a;
2257 DBUS_GENERIC_STRING_PREAMBLE (real_a);
2258 _dbus_assert (c_str != NULL);
2259
2260 ap = real_a->str;
2261 bp = (const unsigned char*) c_str;
2262 a_end = real_a->str + real_a->len;
2263 while (ap != a_end && *bp)
2264 {
2265 if (*ap != *bp)
2266 return FALSE;
2267
2268 ++ap;
2269 ++bp;
2270 }
2271
2272 if (*bp == '\0')
2273 return TRUE;
2274 else
2275 return FALSE;
2276}
2277
2287 dbus_bool_t
2288_dbus_string_starts_with_words_c_str (const DBusString *a,
2289 const char *c_str,
2290 char word_separator)
2291{
2292 char next_char;
2293 const char *data;
2294 _dbus_assert (c_str != NULL);
2295
2296 if (!_dbus_string_starts_with_c_str (a, c_str))
2297 return FALSE;
2298
2299 data = _dbus_string_get_const_data (a);
2300 next_char = data[strlen (c_str)];
2301 return next_char == '\0' || next_char == word_separator;
2302}
2303
2312 dbus_bool_t
2313_dbus_string_append_byte_as_hex (DBusString *str,
2314 unsigned char byte)
2315{
2316 const char hexdigits[16] = {
2317 '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
2318 'a', 'b', 'c', 'd', 'e', 'f'
2319 };
2320
2321 if (!_dbus_string_append_byte (str,
2322 hexdigits[(byte >> 4)]))
2323 return FALSE;
2324
2325 if (!_dbus_string_append_byte (str,
2326 hexdigits[(byte & 0x0f)]))
2327 {
2328 _dbus_string_set_length (str,
2329 _dbus_string_get_length (str) - 1);
2330 return FALSE;
2331 }
2332
2333 return TRUE;
2334}
2335
2336/* Currently only used when embedded tests are enabled */
2337#ifdef DBUS_ENABLE_EMBEDDED_TESTS
2348 dbus_bool_t
2349_dbus_string_append_buffer_as_hex (DBusString *str,
2350 void *buf,
2351 int size)
2352{
2353 unsigned char *p;
2354 int i;
2355
2356 _dbus_assert (size >= 0);
2357 _dbus_assert (size == 0 || buf != NULL);
2358
2359 p = (unsigned char *) buf;
2360
2361 for (i = 0; i < size; i++)
2362 {
2363 if (!_dbus_string_append_byte_as_hex (str, p[i]))
2364 return FALSE;
2365 }
2366
2367 return TRUE;
2368}
2369#endif
2370
2381 dbus_bool_t
2382_dbus_string_hex_encode (const DBusString *source,
2383 int start,
2384 DBusString *dest,
2385 int insert_at)
2386{
2387 DBusString result;
2388 const unsigned char *p;
2389 const unsigned char *end;
2390 dbus_bool_t retval;
2391
2392 _dbus_assert (start <= _dbus_string_get_length (source));
2393
2394 if (!_dbus_string_init (&result))
2395 return FALSE;
2396
2397 retval = FALSE;
2398
2399 p = (const unsigned char*) _dbus_string_get_const_data (source);
2400 end = p + _dbus_string_get_length (source);
2401 p += start;
2402
2403 while (p != end)
2404 {
2405 if (!_dbus_string_append_byte_as_hex (&result, *p))
2406 goto out;
2407
2408 ++p;
2409 }
2410
2411 if (!_dbus_string_move (&result, 0, dest, insert_at))
2412 goto out;
2413
2414 retval = TRUE;
2415
2416 out:
2417 _dbus_string_free (&result);
2418 return retval;
2419}
2420
2431 dbus_bool_t
2432_dbus_string_hex_decode (const DBusString *source,
2433 int start,
2434 int *end_return,
2435 DBusString *dest,
2436 int insert_at)
2437{
2438 DBusString result;
2439 const unsigned char *p;
2440 const unsigned char *end;
2441 dbus_bool_t retval;
2442 dbus_bool_t high_bits;
2443
2444 _dbus_assert (start <= _dbus_string_get_length (source));
2445
2446 if (!_dbus_string_init (&result))
2447 return FALSE;
2448
2449 retval = FALSE;
2450
2451 high_bits = TRUE;
2452 p = (const unsigned char*) _dbus_string_get_const_data (source);
2453 end = p + _dbus_string_get_length (source);
2454 p += start;
2455
2456 while (p != end)
2457 {
2458 unsigned int val;
2459
2460 switch (*p)
2461 {
2462 case '0':
2463 val = 0;
2464 break;
2465 case '1':
2466 val = 1;
2467 break;
2468 case '2':
2469 val = 2;
2470 break;
2471 case '3':
2472 val = 3;
2473 break;
2474 case '4':
2475 val = 4;
2476 break;
2477 case '5':
2478 val = 5;
2479 break;
2480 case '6':
2481 val = 6;
2482 break;
2483 case '7':
2484 val = 7;
2485 break;
2486 case '8':
2487 val = 8;
2488 break;
2489 case '9':
2490 val = 9;
2491 break;
2492 case 'a':
2493 case 'A':
2494 val = 10;
2495 break;
2496 case 'b':
2497 case 'B':
2498 val = 11;
2499 break;
2500 case 'c':
2501 case 'C':
2502 val = 12;
2503 break;
2504 case 'd':
2505 case 'D':
2506 val = 13;
2507 break;
2508 case 'e':
2509 case 'E':
2510 val = 14;
2511 break;
2512 case 'f':
2513 case 'F':
2514 val = 15;
2515 break;
2516 default:
2517 goto done;
2518 }
2519
2520 if (high_bits)
2521 {
2522 if (!_dbus_string_append_byte (&result,
2523 val << 4))
2524 goto out;
2525 }
2526 else
2527 {
2528 int len;
2529 unsigned char b;
2530
2531 len = _dbus_string_get_length (&result);
2532
2533 b = _dbus_string_get_byte (&result, len - 1);
2534
2535 b |= val;
2536
2537 _dbus_string_set_byte (&result, len - 1, b);
2538 }
2539
2540 high_bits = !high_bits;
2541
2542 ++p;
2543 }
2544
2545 done:
2546 if (!_dbus_string_move (&result, 0, dest, insert_at))
2547 goto out;
2548
2549 if (end_return)
2550 *end_return = p - (const unsigned char*) _dbus_string_get_const_data (source);
2551
2552 retval = TRUE;
2553
2554 out:
2555 _dbus_string_free (&result);
2556 return retval;
2557}
2558
2572 dbus_bool_t
2573_dbus_string_validate_ascii (const DBusString *str,
2574 int start,
2575 int len)
2576{
2577 const unsigned char *s;
2578 const unsigned char *end;
2579 DBUS_CONST_STRING_PREAMBLE (str);
2580 _dbus_assert (start >= 0);
2581 _dbus_assert (start <= real->len);
2582 _dbus_assert (len >= 0);
2583
2584 if (len > real->len - start)
2585 return FALSE;
2586
2587 s = real->str + start;
2588 end = s + len;
2589 while (s != end)
2590 {
2591 if (_DBUS_UNLIKELY (!_DBUS_ISASCII (*s)))
2592 return FALSE;
2593
2594 ++s;
2595 }
2596
2597 return TRUE;
2598}
2599
2607 void
2608_dbus_string_tolower_ascii (const DBusString *str,
2609 int start,
2610 int len)
2611{
2612 unsigned char *s;
2613 unsigned char *end;
2614 DBUS_STRING_PREAMBLE (str);
2615 _dbus_assert (start >= 0);
2616 _dbus_assert (start <= real->len);
2617 _dbus_assert (len >= 0);
2618 _dbus_assert (len <= real->len - start);
2619
2620 s = real->str + start;
2621 end = s + len;
2622
2623 while (s != end)
2624 {
2625 if (*s >= 'A' && *s <= 'Z')
2626 *s += 'a' - 'A';
2627 ++s;
2628 }
2629}
2630
2638 void
2639_dbus_string_toupper_ascii (const DBusString *str,
2640 int start,
2641 int len)
2642{
2643 unsigned char *s;
2644 unsigned char *end;
2645 DBUS_STRING_PREAMBLE (str);
2646 _dbus_assert (start >= 0);
2647 _dbus_assert (start <= real->len);
2648 _dbus_assert (len >= 0);
2649 _dbus_assert (len <= real->len - start);
2650
2651 s = real->str + start;
2652 end = s + len;
2653
2654 while (s != end)
2655 {
2656 if (*s >= 'a' && *s <= 'z')
2657 *s += 'A' - 'a';
2658 ++s;
2659 }
2660}
2661
2677 dbus_bool_t
2678_dbus_string_validate_utf8 (const DBusString *str,
2679 int start,
2680 int len)
2681{
2682 const unsigned char *p;
2683 const unsigned char *end;
2684 DBUS_CONST_STRING_PREAMBLE (str);
2685 _dbus_assert (start >= 0);
2686 _dbus_assert (start <= real->len);
2687 _dbus_assert (len >= 0);
2688
2689 /* we are doing _DBUS_UNLIKELY() here which might be
2690 * dubious in a generic library like GLib, but in D-Bus
2691 * we know we're validating messages and that it would
2692 * only be evil/broken apps that would have invalid
2693 * UTF-8. Also, this function seems to be a performance
2694 * bottleneck in profiles.
2695 */
2696
2697 if (_DBUS_UNLIKELY (len > real->len - start))
2698 return FALSE;
2699
2700 p = real->str + start;
2701 end = p + len;
2702
2703 while (p < end)
2704 {
2705 int i, mask, char_len;
2706 dbus_unichar_t result;
2707
2708 /* nul bytes considered invalid */
2709 if (*p == '\0')
2710 break;
2711
2712 /* Special-case ASCII; this makes us go a lot faster in
2713 * D-Bus profiles where we are typically validating
2714 * function names and such. We have to know that
2715 * all following checks will pass for ASCII though,
2716 * comments follow ...
2717 */
2718 if (*p < 128)
2719 {
2720 ++p;
2721 continue;
2722 }
2723
2724 UTF8_COMPUTE (*p, mask, char_len);
2725
2726 if (_DBUS_UNLIKELY (char_len == 0)) /* ASCII: char_len == 1 */
2727 break;
2728
2729 /* check that the expected number of bytes exists in the remaining length */
2730 if (_DBUS_UNLIKELY ((end - p) < char_len)) /* ASCII: p < end and char_len == 1 */
2731 break;
2732
2733 UTF8_GET (result, p, i, mask, char_len);
2734
2735 /* Check for overlong UTF-8 */
2736 if (_DBUS_UNLIKELY (UTF8_LENGTH (result) != char_len)) /* ASCII: UTF8_LENGTH == 1 */
2737 break;
2738#if 0
2739 /* The UNICODE_VALID check below will catch this */
2740 if (_DBUS_UNLIKELY (result == (dbus_unichar_t)-1)) /* ASCII: result = ascii value */
2741 break;
2742#endif
2743
2744 if (_DBUS_UNLIKELY (!UNICODE_VALID (result))) /* ASCII: always valid */
2745 break;
2746
2747 /* UNICODE_VALID should have caught it */
2748 _dbus_assert (result != (dbus_unichar_t)-1);
2749
2750 p += char_len;
2751 }
2752
2753 /* See that we covered the entire length if a length was
2754 * passed in
2755 */
2756 if (_DBUS_UNLIKELY (p != end))
2757 return FALSE;
2758 else
2759 return TRUE;
2760}
2761
2775 dbus_bool_t
2776_dbus_string_validate_nul (const DBusString *str,
2777 int start,
2778 int len)
2779{
2780 const unsigned char *s;
2781 const unsigned char *end;
2782 DBUS_CONST_STRING_PREAMBLE (str);
2783 _dbus_assert (start >= 0);
2784 _dbus_assert (len >= 0);
2785 _dbus_assert (start <= real->len);
2786
2787 if (len > real->len - start)
2788 return FALSE;
2789
2790 s = real->str + start;
2791 end = s + len;
2792 while (s != end)
2793 {
2794 if (_DBUS_UNLIKELY (*s != '\0'))
2795 return FALSE;
2796 ++s;
2797 }
2798
2799 return TRUE;
2800}
2801
2807 void
2808_dbus_string_zero (DBusString *str)
2809{
2810 DBUS_STRING_PREAMBLE (str);
2811
2812 memset (real->str - real->align_offset, '\0', real->allocated);
2813}
2816/* tests are in dbus-string-util.c */
_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
NULL
#define NULL
A null pointer, defined appropriately for C or C++.
Definition dbus-macros.h:51
TRUE
#define TRUE
Expands to "1".
Definition dbus-macros.h:41
FALSE
#define FALSE
Expands to "0".
Definition dbus-macros.h:44
dbus_free
void dbus_free(void *memory)
Frees a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
Definition dbus-memory.c:710
dbus_realloc
void * dbus_realloc(void *memory, size_t bytes)
Resizes a block of memory previously allocated by dbus_malloc() or dbus_malloc0().
Definition dbus-memory.c:610
dbus_malloc
void * dbus_malloc(size_t bytes)
Allocates the given number of bytes, as with standard malloc().
Definition dbus-memory.c:470
_DBUS_STRING_MAX_LENGTH
#define _DBUS_STRING_MAX_LENGTH
The maximum length of a DBusString.
Definition dbus-string-private.h:71
DBUS_STRING_PREAMBLE
#define DBUS_STRING_PREAMBLE(str)
Checks assertions about a string object that needs to be modifiable - may not be locked or const.
Definition dbus-string-private.h:95
DBUS_CONST_STRING_PREAMBLE
#define DBUS_CONST_STRING_PREAMBLE(str)
Checks assertions about a string that may be const or locked.
Definition dbus-string-private.h:116
DBUS_GENERIC_STRING_PREAMBLE
#define DBUS_GENERIC_STRING_PREAMBLE(real)
Checks a bunch of assertions about a string object.
Definition dbus-string-private.h:78
DBUS_IS_ASCII_BLANK
#define DBUS_IS_ASCII_BLANK(c)
Checks for ASCII blank byte.
Definition dbus-string-private.h:123
DBUS_IS_ASCII_WHITE
#define DBUS_IS_ASCII_WHITE(c)
Checks for ASCII whitespace byte.
Definition dbus-string-private.h:129
DBUS_LOCKED_STRING_PREAMBLE
#define DBUS_LOCKED_STRING_PREAMBLE(str)
Checks assertions about a string object that may be locked but can't be const.
Definition dbus-string-private.h:107
_dbus_string_set_length
dbus_bool_t _dbus_string_set_length(DBusString *str, int length)
Sets the length of a string.
Definition dbus-string.c:847
_dbus_string_hex_decode
dbus_bool_t _dbus_string_hex_decode(const DBusString *source, int start, int *end_return, DBusString *dest, int insert_at)
Decodes a string from hex encoding.
Definition dbus-string.c:2432
_dbus_string_append
dbus_bool_t _dbus_string_append(DBusString *str, const char *buffer)
Appends a nul-terminated C-style string to a DBusString.
Definition dbus-string.c:980
_dbus_string_insert_8_aligned
dbus_bool_t _dbus_string_insert_8_aligned(DBusString *str, int insert_at, const unsigned char octets[8])
Inserts 8 bytes aligned on an 8 byte boundary with any alignment padding initialized to 0.
Definition dbus-string.c:1053
_dbus_string_validate_nul
dbus_bool_t _dbus_string_validate_nul(const DBusString *str, int start, int len)
Checks that the given range of the string is all nul bytes.
Definition dbus-string.c:2776
_dbus_string_equal_substring
dbus_bool_t _dbus_string_equal_substring(const DBusString *a, int a_start, int a_len, const DBusString *b, int b_start)
Tests two sub-parts of two DBusString for equality.
Definition dbus-string.c:2166
UNICODE_VALID
#define UNICODE_VALID(Char)
Check whether a Unicode (5.2) char is in a valid range.
Definition dbus-string.c:1647
_dbus_string_insert_alignment
dbus_bool_t _dbus_string_insert_alignment(DBusString *str, int *insert_at, int alignment)
Inserts padding at *insert_at such to align it to the given boundary.
Definition dbus-string.c:1081
UTF8_COMPUTE
#define UTF8_COMPUTE(Char, Mask, Len)
computes length and mask of a unicode character
Definition dbus-string.c:1567
_dbus_string_init
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition dbus-string.c:182
_dbus_string_append_strings
dbus_bool_t _dbus_string_append_strings(DBusString *str, char **strings, char separator)
Append vector with strings connected by separator.
Definition dbus-string.c:1213
_dbus_string_init_const
void _dbus_string_init_const(DBusString *str, const char *value)
Initializes a constant string.
Definition dbus-string.c:197
_dbus_string_copy
dbus_bool_t _dbus_string_copy(const DBusString *source, int start, DBusString *dest, int insert_at)
Like _dbus_string_move(), but does not delete the section of the source string that's copied to the d...
Definition dbus-string.c:1345
_dbus_string_find_eol
dbus_bool_t _dbus_string_find_eol(const DBusString *str, int start, int *found, int *found_len)
Finds end of line ("\r\n" or "\n") in the string, returning TRUE and filling in the byte index where ...
Definition dbus-string.c:1689
_dbus_string_starts_with_c_str
dbus_bool_t _dbus_string_starts_with_c_str(const DBusString *a, const char *c_str)
Checks whether a string starts with the given C string.
Definition dbus-string.c:2250
_dbus_string_alloc_space
dbus_bool_t _dbus_string_alloc_space(DBusString *str, int extra_bytes)
Preallocate extra_bytes such that a future lengthening of the string by extra_bytes is guaranteed to ...
Definition dbus-string.c:944
_dbus_string_steal_data
dbus_bool_t _dbus_string_steal_data(DBusString *str, char **data_return)
Like _dbus_string_get_data(), but removes the gotten data from the original string.
Definition dbus-string.c:686
_dbus_string_skip_blank
void _dbus_string_skip_blank(const DBusString *str, int start, int *end)
Skips blanks from start, storing the first non-blank in *end (blank is space or tab).
Definition dbus-string.c:1865
_dbus_string_init_preallocated
dbus_bool_t _dbus_string_init_preallocated(DBusString *str, int allocate_size)
Initializes a string that can be up to the given allocation size before it has to realloc.
Definition dbus-string.c:139
_dbus_string_skip_white_reverse
void _dbus_string_skip_white_reverse(const DBusString *str, int end, int *start)
Skips whitespace from end, storing the start index of the trailing whitespace in *start.
Definition dbus-string.c:1932
_dbus_string_init_from_string
dbus_bool_t _dbus_string_init_from_string(DBusString *str, const DBusString *from)
Initializes a string from another string.
Definition dbus-string.c:254
_dbus_string_split_on_byte
dbus_bool_t _dbus_string_split_on_byte(DBusString *source, unsigned char byte, DBusString *tail)
Looks for the first occurance of a byte, deletes that byte, and moves everything after the byte to th...
Definition dbus-string.c:1529
_dbus_string_find
dbus_bool_t _dbus_string_find(const DBusString *str, int start, const char *substr, int *found)
Finds the given substring in the string, returning TRUE and filling in the byte index where the subst...
Definition dbus-string.c:1666
_dbus_string_get_data_len
char * _dbus_string_get_data_len(DBusString *str, int start, int len)
Gets a sub-portion of the raw character buffer from the string.
Definition dbus-string.c:535
_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:2678
_dbus_string_find_blank
dbus_bool_t _dbus_string_find_blank(const DBusString *str, int start, int *found)
Finds a blank (space or tab) in the string.
Definition dbus-string.c:1827
_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
_dbus_string_tolower_ascii
void _dbus_string_tolower_ascii(const DBusString *str, int start, int len)
Converts the given range of the string to lower case.
Definition dbus-string.c:2608
_dbus_string_append_len
dbus_bool_t _dbus_string_append_len(DBusString *str, const char *buffer, int len)
Appends block of bytes with the given length to a DBusString.
Definition dbus-string.c:1170
_dbus_string_free
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init(), and fills it with the same contents as _DBUS_STRING_IN...
Definition dbus-string.c:278
_dbus_string_shorten
void _dbus_string_shorten(DBusString *str, int length_to_remove)
Makes a string shorter by the given number of bytes.
Definition dbus-string.c:825
_dbus_string_delete
void _dbus_string_delete(DBusString *str, int start, int len)
Deletes a segment of a DBusString with length len starting at start.
Definition dbus-string.c:1255
_dbus_string_copy_data
dbus_bool_t _dbus_string_copy_data(const DBusString *str, char **data_return)
Copies the data from the string into a char*.
Definition dbus-string.c:717
_dbus_string_equal_c_str
dbus_bool_t _dbus_string_equal_c_str(const DBusString *a, const char *c_str)
Checks whether a string is equal to a C string.
Definition dbus-string.c:2214
_dbus_string_skip_white
void _dbus_string_skip_white(const DBusString *str, int start, int *end)
Skips whitespace from start, storing the first non-whitespace in *end.
Definition dbus-string.c:1899
_dbus_string_pop_line
dbus_bool_t _dbus_string_pop_line(DBusString *source, DBusString *dest)
Assigns a newline-terminated or \r\n-terminated line from the front of the string to the given dest s...
Definition dbus-string.c:1971
_dbus_string_append_printf_valist
dbus_bool_t _dbus_string_append_printf_valist(DBusString *str, const char *format, va_list args)
Appends a printf-style formatted string to the DBusString.
Definition dbus-string.c:1105
_dbus_string_lengthen
dbus_bool_t _dbus_string_lengthen(DBusString *str, int additional_length)
Makes a string longer by the given number of bytes.
Definition dbus-string.c:805
_dbus_string_zero
void _dbus_string_zero(DBusString *str)
Clears all allocated bytes in the string to zero.
Definition dbus-string.c:2808
UTF8_LENGTH
#define UTF8_LENGTH(Char)
computes length of a unicode character in UTF-8
Definition dbus-string.c:1608
_dbus_string_toupper_ascii
void _dbus_string_toupper_ascii(const DBusString *str, int start, int len)
Converts the given range of the string to upper case.
Definition dbus-string.c:2639
_dbus_string_insert_bytes
dbus_bool_t _dbus_string_insert_bytes(DBusString *str, int i, int n_bytes, unsigned char byte)
Inserts a number of bytes of a given value at the given position.
Definition dbus-string.c:629
_dbus_string_validate_ascii
dbus_bool_t _dbus_string_validate_ascii(const DBusString *str, int start, int len)
Checks that the given range of the string is valid ASCII with no nul bytes.
Definition dbus-string.c:2573
_dbus_string_append_byte
dbus_bool_t _dbus_string_append_byte(DBusString *str, unsigned char byte)
Appends a single byte to the string, returning FALSE if not enough memory.
Definition dbus-string.c:1190
_dbus_string_chop_white
void _dbus_string_chop_white(DBusString *str)
Deletes leading and trailing whitespace.
Definition dbus-string.c:2051
_dbus_string_starts_with_words_c_str
dbus_bool_t _dbus_string_starts_with_words_c_str(const DBusString *a, const char *c_str, char word_separator)
Checks whether a string starts with the given C string, after which it ends or is separated from the ...
Definition dbus-string.c:2288
_dbus_string_hex_encode
dbus_bool_t _dbus_string_hex_encode(const DBusString *source, int start, DBusString *dest, int insert_at)
Encodes a string in hex, the way MD5 and SHA-1 are usually encoded.
Definition dbus-string.c:2382
DBUS_STRING_COPY_PREAMBLE
#define DBUS_STRING_COPY_PREAMBLE(source, start, dest, insert_at)
Checks assertions for two strings we're copying a segment between, and declares real_source/real_dest...
Definition dbus-string.c:1297
_dbus_string_append_printf
dbus_bool_t _dbus_string_append_printf(DBusString *str, const char *format,...)
Appends a printf-style formatted string to the DBusString.
Definition dbus-string.c:1147
_dbus_string_insert_byte
dbus_bool_t _dbus_string_insert_byte(DBusString *str, int i, unsigned char byte)
Inserts a single byte at the given position.
Definition dbus-string.c:659
UTF8_GET
#define UTF8_GET(Result, Chars, Count, Mask, Len)
Gets a UTF-8 value.
Definition dbus-string.c:1624
_dbus_string_move_len
dbus_bool_t _dbus_string_move_len(DBusString *source, int start, int len, DBusString *dest, int insert_at)
Like _dbus_string_move(), but can move a segment from the middle of the source string.
Definition dbus-string.c:1370
_dbus_string_get_allocated_size
int _dbus_string_get_allocated_size(const DBusString *str)
Returns the allocated size of the string.
Definition dbus-string.c:476
_dbus_string_copy_to_buffer_with_nul
void _dbus_string_copy_to_buffer_with_nul(const DBusString *str, char *buffer, int avail_len)
Copies the contents of a DBusString into a different buffer.
Definition dbus-string.c:764
_dbus_string_compact
dbus_bool_t _dbus_string_compact(DBusString *str, int max_waste)
Compacts the string to avoid wasted memory.
Definition dbus-string.c:420
_dbus_string_equal_len
dbus_bool_t _dbus_string_equal_len(const DBusString *a, const DBusString *b, int len)
Tests two DBusString for equality up to the given length.
Definition dbus-string.c:2118
_dbus_string_move
dbus_bool_t _dbus_string_move(DBusString *source, int start, DBusString *dest, int insert_at)
Moves the end of one string into another string.
Definition dbus-string.c:1321
_dbus_string_equal
dbus_bool_t _dbus_string_equal(const DBusString *a, const DBusString *b)
Tests two DBusString for equality.
Definition dbus-string.c:2075
_dbus_string_insert_4_aligned
dbus_bool_t _dbus_string_insert_4_aligned(DBusString *str, int insert_at, const unsigned char octets[4])
Inserts 4 bytes aligned on a 4 byte boundary with any alignment padding initialized to 0.
Definition dbus-string.c:1029
_dbus_string_insert_2_aligned
dbus_bool_t _dbus_string_insert_2_aligned(DBusString *str, int insert_at, const unsigned char octets[2])
Inserts 2 bytes aligned on a 2 byte boundary with any alignment padding initialized to 0.
Definition dbus-string.c:1005
_dbus_string_append_byte_as_hex
dbus_bool_t _dbus_string_append_byte_as_hex(DBusString *str, unsigned char byte)
Appends a two-character hex digit to a string, where the hex digit has the value of the given byte.
Definition dbus-string.c:2313
_dbus_string_align_length
dbus_bool_t _dbus_string_align_length(DBusString *str, int alignment)
Align the length of a string to a specific alignment (typically 4 or 8) by appending nul bytes to the...
Definition dbus-string.c:928
_dbus_string_find_to
dbus_bool_t _dbus_string_find_to(const DBusString *str, int start, int end, const char *substr, int *found)
Finds the given substring in the string, up to a certain position, returning TRUE and filling in the ...
Definition dbus-string.c:1759
_dbus_string_copy_len
dbus_bool_t _dbus_string_copy_len(const DBusString *source, int start, int len, DBusString *dest, int insert_at)
Like _dbus_string_copy(), but can copy a segment from the middle of the source string.
Definition dbus-string.c:1437
_dbus_string_copy_to_buffer
void _dbus_string_copy_to_buffer(const DBusString *str, char *buffer, int avail_len)
Copies the contents of a DBusString into a different buffer.
Definition dbus-string.c:742
_dbus_string_replace_len
dbus_bool_t _dbus_string_replace_len(const DBusString *source, int start, int len, DBusString *dest, int replace_at, int replace_len)
Replaces a segment of dest string with a segment of source string.
Definition dbus-string.c:1466
_dbus_printf_string_upper_bound
int _dbus_printf_string_upper_bound(const char *format, va_list args)
Measure the length of the given format string and arguments, not including the terminating nul.
Definition dbus-sysdeps-unix.c:3959
dbus_bool_t
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition dbus-types.h:37
DBusRealString
Internals of DBusString.
Definition dbus-string-private.h:46
DBusRealString::align_offset
unsigned int align_offset
str - align_offset is the actual malloc block
Definition dbus-string-private.h:53
DBusRealString::valid
unsigned int valid
DBusString is valid (initialized and not freed)
Definition dbus-string-private.h:52
DBusRealString::constant
unsigned int constant
String data is not owned by DBusString.
Definition dbus-string-private.h:50
DBusRealString::locked
unsigned int locked
DBusString has been locked and can't be changed.
Definition dbus-string-private.h:51
DBusRealString::str
unsigned char * str
String data, plus nul termination.
Definition dbus-string-private.h:47
DBusRealString::allocated
int allocated
Allocated size of data.
Definition dbus-string-private.h:49
DBusRealString::len
int len
Length without nul.
Definition dbus-string-private.h:48
DBusString
Definition dbus-string.h:47