D-Bus: dbus-internals.c Source File

D-Bus 1.16.2

dbus-internals.c
1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-internals.c random utility stuff (internal to D-Bus implementation)
3 *
4 * Copyright (C) 2002, 2003 Red Hat, Inc.
5 *
6 * SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
7 *
8 * Licensed under the Academic Free License version 2.1
9 *
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License as published by
12 * the Free Software Foundation; either version 2 of the License, or
13 * (at your option) any later version.
14 *
15 * This program is distributed in the hope that it will be useful,
16 * but WITHOUT ANY WARRANTY; without even the implied warranty of
17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 * GNU General Public License for more details.
19 *
20 * You should have received a copy of the GNU General Public License
21 * along with this program; if not, write to the Free Software
22 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 *
24 */
25
26#include <config.h>
27#include "dbus-internals.h"
28#include "dbus-protocol.h"
29#include "dbus-marshal-basic.h"
30#include "dbus-test.h"
31#include "dbus-test-tap.h"
32#include "dbus-valgrind-internal.h"
33#include <stdio.h>
34#include <stdarg.h>
35#include <string.h>
36#include <stdlib.h>
37#ifdef DBUS_USE_OUTPUT_DEBUG_STRING
38#include <windows.h>
39#include <mbstring.h>
40#endif
41
47
54
62
71
80
122
138
154
161
167
175
181
182/* The build system should have checked for DBUS_SIZEOF_VOID_P */
183_DBUS_STATIC_ASSERT (sizeof (void *) == DBUS_SIZEOF_VOID_P);
184
185/* dbus currently assumes that function pointers are essentially
186 * interchangeable with data pointers. There's nothing special about
187 * DBusShutdownFunction, it's just an arbitrary function pointer type.
188 * If this assertion fails on your platform, some porting will be required. */
189_DBUS_STATIC_ASSERT (sizeof (void *) == sizeof (DBusShutdownFunction));
190_DBUS_STATIC_ASSERT (_DBUS_ALIGNOF (void *) == _DBUS_ALIGNOF (DBusShutdownFunction));
191
192/* This is meant to be true by definition. */
193_DBUS_STATIC_ASSERT (sizeof (void *) == sizeof (intptr_t));
194_DBUS_STATIC_ASSERT (sizeof (void *) == sizeof (uintptr_t));
195
196/*
197 * Some frequent assumptions that we should *avoid* making include these,
198 * all of which are false on CHERI (which has 128-bit tagged pointers,
199 * but a 64-bit address space and therefore 64-bit sizes):
200 *
201 * sizeof (void *) <= sizeof (size_t)
202 * sizeof (void *) <= 8
203 * _DBUS_ALIGNOF (void *) <= 8
204 *
205 * We should also avoid making these assumptions, although we don't currently
206 * know a concrete example of platforms where they're false:
207 *
208 * sizeof (ptrdiff_t) == sizeof (size_t)
209 */
210
216 const char *_dbus_no_memory_message = "Not enough memory";
217
218/* Not necessarily thread-safe, but if writes don't propagate between
219 * threads, the worst that will happen is that we duplicate work in more than
220 * one thread. */
221static dbus_bool_t warn_initted = FALSE;
222
223/* Not necessarily thread-safe, but if writes don't propagate between
224 * threads, the worst that will happen is that warnings get their default
225 * fatal/non-fatal nature. */
226static dbus_bool_t fatal_warnings = FALSE;
227static dbus_bool_t fatal_warnings_on_check_failed = TRUE;
228
229static int check_failed_count = 0;
230
231int _dbus_get_check_failed_count (void)
232{
233 return check_failed_count;
234}
235
236static void
237init_warnings(void)
238{
239 if (!warn_initted)
240 {
241 const char *s;
242 s = _dbus_getenv ("DBUS_FATAL_WARNINGS");
243 if (s && *s)
244 {
245 if (*s == '0')
246 {
247 fatal_warnings = FALSE;
248 fatal_warnings_on_check_failed = FALSE;
249 }
250 else if (*s == '1')
251 {
252 fatal_warnings = TRUE;
253 fatal_warnings_on_check_failed = TRUE;
254 }
255 else
256 {
257 fprintf(stderr, "DBUS_FATAL_WARNINGS should be set to 0 or 1 if set, not '%s'",
258 s);
259 }
260 }
261
262 check_failed_count = 0;
263
264 warn_initted = TRUE;
265 }
266}
267
277void
278_dbus_warn (const char *format,
279 ...)
280{
281 DBusSystemLogSeverity severity = DBUS_SYSTEM_LOG_WARNING;
282 va_list args;
283
284 if (!warn_initted)
285 init_warnings ();
286
287 if (fatal_warnings)
288 severity = DBUS_SYSTEM_LOG_ERROR;
289
290 va_start (args, format);
291 _dbus_logv (severity, format, args);
292 va_end (args);
293
294 if (fatal_warnings)
295 {
296 fflush (stderr);
297 _dbus_abort ();
298 }
299}
300
309void
310_dbus_warn_check_failed(const char *format,
311 ...)
312{
313 DBusSystemLogSeverity severity = DBUS_SYSTEM_LOG_WARNING;
314 va_list args;
315
316 if (!warn_initted)
317 init_warnings ();
318
319 if (fatal_warnings_on_check_failed)
320 severity = DBUS_SYSTEM_LOG_ERROR;
321
322 va_start (args, format);
323 _dbus_logv (severity, format, args);
324 va_end (args);
325
326 if (fatal_warnings_on_check_failed)
327 {
328 fflush (stderr);
329 _dbus_abort ();
330 }
331 else
332 check_failed_count++;
333}
334
335#ifdef DBUS_ENABLE_VERBOSE_MODE
336
337static dbus_bool_t verbose_initted = FALSE;
338static dbus_bool_t verbose = TRUE;
339
340#ifdef DBUS_USE_OUTPUT_DEBUG_STRING
341static char module_name[1024];
342#endif
343
344static inline void
345_dbus_verbose_init (void)
346{
347 if (!verbose_initted)
348 {
349 const char *p = _dbus_getenv ("DBUS_VERBOSE");
350 verbose = p != NULL && *p == '1';
351 verbose_initted = TRUE;
352#ifdef DBUS_USE_OUTPUT_DEBUG_STRING
353 {
354 char *last_period, *last_slash;
355 GetModuleFileName(0,module_name,sizeof(module_name)-1);
356 last_period = _mbsrchr(module_name,'.');
357 if (last_period)
358 *last_period ='\0';
359 last_slash = _mbsrchr(module_name,'\\');
360 if (last_slash)
361 strcpy(module_name,last_slash+1);
362 strcat(module_name,": ");
363 }
364#endif
365 }
366}
367
372static char *_dbus_file_path_extract_elements_from_tail(const char *file,int level)
373{
374 int prefix = 0;
375 char *p = (char *)file + strlen(file);
376 int i = 0;
377
378 for (;p >= file;p--)
379 {
380 if (DBUS_IS_DIR_SEPARATOR(*p))
381 {
382 if (++i >= level)
383 {
384 prefix = p-file+1;
385 break;
386 }
387 }
388 }
389
390 return (char *)file+prefix;
391}
392
398 dbus_bool_t
399_dbus_is_verbose_real (void)
400{
401 _dbus_verbose_init ();
402 return verbose;
403}
404
405void _dbus_set_verbose (dbus_bool_t state)
406{
407 verbose = state;
408}
409
410 dbus_bool_t _dbus_get_verbose (void)
411{
412 return verbose;
413}
414
426void
427_dbus_verbose_raw (const char *s)
428{
429 if (!_dbus_is_verbose_real ())
430 return;
431#ifdef DBUS_USE_OUTPUT_DEBUG_STRING
432 OutputDebugStringA (s);
433#else
434 fputs (s, stderr);
435 fflush (stderr);
436#endif
437}
438
447void
448_dbus_verbose_real (
449#ifdef DBUS_CPP_SUPPORTS_VARIABLE_MACRO_ARGUMENTS
450 const char *file,
451 const int line,
452 const char *function,
453#endif
454 const char *format,
455 ...)
456{
457 va_list args;
458 static dbus_bool_t need_pid = TRUE;
459 int len;
460 dbus_int64_t sec;
461 long usec;
462
463 /* things are written a bit oddly here so that
464 * in the non-verbose case we just have the one
465 * conditional and return immediately.
466 */
467 if (!_dbus_is_verbose_real())
468 return;
469
470#ifndef DBUS_USE_OUTPUT_DEBUG_STRING
471 /* Print out pid before the line */
472 if (need_pid)
473 {
474 _dbus_print_thread ();
475 }
476 _dbus_get_real_time (&sec, &usec);
477 fprintf (stderr, "%" DBUS_INT64_MODIFIER "d.%06ld ", sec, usec);
478#endif
479
480 /* Only print pid again if the next line is a new line */
481 len = strlen (format);
482 if (format[len-1] == '\n')
483 need_pid = TRUE;
484 else
485 need_pid = FALSE;
486
487 va_start (args, format);
488
489#ifdef DBUS_USE_OUTPUT_DEBUG_STRING
490 {
491 DBusString out = _DBUS_STRING_INIT_INVALID;
492 const char *message = NULL;
493
494 if (!_dbus_string_init (&out))
495 goto out;
496
497 if (!_dbus_string_append (&out, module_name))
498 goto out;
499
500#ifdef DBUS_CPP_SUPPORTS_VARIABLE_MACRO_ARGUMENTS
501 if (!_dbus_string_append_printf (&out, "[%s(%d):%s] ", _dbus_file_path_extract_elements_from_tail (file, 2), line, function))
502 goto out;
503#endif
504 if (!_dbus_string_append_printf_valist (&out, format, args))
505 goto out;
506 message = _dbus_string_get_const_data (&out);
507out:
508 if (message == NULL)
509 {
510 OutputDebugStringA ("Out of memory while formatting verbose message: '''");
511 OutputDebugStringA (format);
512 OutputDebugStringA ("'''");
513 }
514 else
515 {
516 OutputDebugStringA (message);
517 }
518 _dbus_string_free (&out);
519 }
520#else
521#ifdef DBUS_CPP_SUPPORTS_VARIABLE_MACRO_ARGUMENTS
522 fprintf (stderr, "[%s(%d):%s] ",_dbus_file_path_extract_elements_from_tail(file,2),line,function);
523#endif
524
525 vfprintf (stderr, format, args);
526 fflush (stderr);
527#endif
528
529 va_end (args);
530}
531
538void
539_dbus_verbose_reset_real (void)
540{
541 verbose_initted = FALSE;
542}
543
544void
545_dbus_trace_ref (const char *obj_name,
546 void *obj,
547 int old_refcount,
548 int new_refcount,
549 const char *why,
550 const char *env_var,
551 int *enabled)
552{
553 _dbus_assert (obj_name != NULL);
554 _dbus_assert (obj != NULL);
555 _dbus_assert (old_refcount >= -1);
556 _dbus_assert (new_refcount >= -1);
557
558 if (old_refcount == -1)
559 {
560 _dbus_assert (new_refcount == -1);
561 }
562 else
563 {
564 _dbus_assert (new_refcount >= 0);
565 _dbus_assert (old_refcount >= 0);
566 _dbus_assert (old_refcount > 0 || new_refcount > 0);
567 }
568
569 _dbus_assert (why != NULL);
570 _dbus_assert (env_var != NULL);
571 _dbus_assert (enabled != NULL);
572
573 if (*enabled < 0)
574 {
575 const char *s = _dbus_getenv (env_var);
576
577 *enabled = FALSE;
578
579 if (s && *s)
580 {
581 if (*s == '0')
582 *enabled = FALSE;
583 else if (*s == '1')
584 *enabled = TRUE;
585 else
586 _dbus_warn ("%s should be 0 or 1 if set, not '%s'", env_var, s);
587 }
588 }
589
590 if (*enabled)
591 {
592 if (old_refcount == -1)
593 {
594 VALGRIND_PRINTF_BACKTRACE ("%s %p ref stolen (%s)",
595 obj_name, obj, why);
596 _dbus_verbose ("%s %p ref stolen (%s)\n",
597 obj_name, obj, why);
598 }
599 else
600 {
601 VALGRIND_PRINTF_BACKTRACE ("%s %p %d -> %d refs (%s)",
602 obj_name, obj,
603 old_refcount, new_refcount, why);
604 _dbus_verbose ("%s %p %d -> %d refs (%s)\n",
605 obj_name, obj, old_refcount, new_refcount, why);
606 }
607 }
608}
609
610#endif /* DBUS_ENABLE_VERBOSE_MODE */
611
620char*
621_dbus_strdup (const char *str)
622{
623 size_t len;
624 char *copy;
625
626 if (str == NULL)
627 return NULL;
628
629 len = strlen (str);
630
631 copy = dbus_malloc (len + 1);
632 if (copy == NULL)
633 return NULL;
634
635 memcpy (copy, str, len + 1);
636
637 return copy;
638}
639
648void*
649_dbus_memdup (const void *mem,
650 size_t n_bytes)
651{
652 void *copy;
653
654 copy = dbus_malloc (n_bytes);
655 if (copy == NULL)
656 return NULL;
657
658 memcpy (copy, mem, n_bytes);
659
660 return copy;
661}
662
671char**
672_dbus_dup_string_array (const char **array)
673{
674 int len;
675 int i;
676 char **copy;
677
678 if (array == NULL)
679 return NULL;
680
681 for (len = 0; array[len] != NULL; ++len)
682 ;
683
684 copy = dbus_new0 (char*, len + 1);
685 if (copy == NULL)
686 return NULL;
687
688 i = 0;
689 while (i < len)
690 {
691 copy[i] = _dbus_strdup (array[i]);
692 if (copy[i] == NULL)
693 {
694 dbus_free_string_array (copy);
695 return NULL;
696 }
697
698 ++i;
699 }
700
701 return copy;
702}
703
711 dbus_bool_t
712_dbus_string_array_contains (const char **array,
713 const char *str)
714{
715 int i;
716
717 i = 0;
718 while (array[i] != NULL)
719 {
720 if (strcmp (array[i], str) == 0)
721 return TRUE;
722 ++i;
723 }
724
725 return FALSE;
726}
727
734size_t
735_dbus_string_array_length (const char **array)
736{
737 size_t i;
738 for (i = 0; array[i]; i++) {}
739 return i;
740}
741
742
751 dbus_bool_t
752_dbus_generate_uuid (DBusGUID *uuid,
753 DBusError *error)
754{
755 DBusError rand_error;
756 dbus_int64_t now;
757
758 dbus_error_init (&rand_error);
759
760 /* don't use monotonic time because the UUID may be saved to disk, e.g.
761 * it may persist across reboots
762 */
763 _dbus_get_real_time (&now, NULL);
764
765 uuid->as_uint32s[DBUS_UUID_LENGTH_WORDS - 1] = DBUS_UINT32_TO_BE (now);
766
767 if (!_dbus_generate_random_bytes_buffer (uuid->as_bytes,
768 DBUS_UUID_LENGTH_BYTES - 4,
769 &rand_error))
770 {
771 dbus_set_error (error, rand_error.name,
772 "Failed to generate UUID: %s", rand_error.message);
773 dbus_error_free (&rand_error);
774 return FALSE;
775 }
776
777 return TRUE;
778}
779
787 dbus_bool_t
788_dbus_uuid_encode (const DBusGUID *uuid,
789 DBusString *encoded)
790{
791 DBusString binary;
792 _dbus_string_init_const_len (&binary, uuid->as_bytes, DBUS_UUID_LENGTH_BYTES);
793 return _dbus_string_hex_encode (&binary, 0, encoded, _dbus_string_get_length (encoded));
794}
795
796static dbus_bool_t
797_dbus_read_uuid_file_without_creating (const DBusString *filename,
798 DBusGUID *uuid,
799 DBusError *error)
800{
801 DBusString contents;
802 DBusString decoded;
803 int end;
804
805 if (!_dbus_string_init (&contents))
806 {
807 _DBUS_SET_OOM (error);
808 return FALSE;
809 }
810
811 if (!_dbus_string_init (&decoded))
812 {
813 _dbus_string_free (&contents);
814 _DBUS_SET_OOM (error);
815 return FALSE;
816 }
817
818 if (!_dbus_file_get_contents (&contents, filename, error))
819 goto error;
820
821 _dbus_string_chop_white (&contents);
822
823 if (_dbus_string_get_length (&contents) != DBUS_UUID_LENGTH_HEX)
824 {
825 dbus_set_error (error, DBUS_ERROR_INVALID_FILE_CONTENT,
826 "UUID file '%s' should contain a hex string of length %d, not length %d, with no other text",
827 _dbus_string_get_const_data (filename),
828 DBUS_UUID_LENGTH_HEX,
829 _dbus_string_get_length (&contents));
830 goto error;
831 }
832
833 if (!_dbus_string_hex_decode (&contents, 0, &end, &decoded, 0))
834 {
835 _DBUS_SET_OOM (error);
836 goto error;
837 }
838
839 if (end == 0)
840 {
841 dbus_set_error (error, DBUS_ERROR_INVALID_FILE_CONTENT,
842 "UUID file '%s' contains invalid hex data",
843 _dbus_string_get_const_data (filename));
844 goto error;
845 }
846
847 if (_dbus_string_get_length (&decoded) != DBUS_UUID_LENGTH_BYTES)
848 {
849 dbus_set_error (error, DBUS_ERROR_INVALID_FILE_CONTENT,
850 "UUID file '%s' contains %d bytes of hex-encoded data instead of %d",
851 _dbus_string_get_const_data (filename),
852 _dbus_string_get_length (&decoded),
853 DBUS_UUID_LENGTH_BYTES);
854 goto error;
855 }
856
857 _dbus_string_copy_to_buffer (&decoded, uuid->as_bytes, DBUS_UUID_LENGTH_BYTES);
858
859 _dbus_string_free (&decoded);
860 _dbus_string_free (&contents);
861
862 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
863
864 return TRUE;
865
866 error:
867 _DBUS_ASSERT_ERROR_IS_SET (error);
868 _dbus_string_free (&contents);
869 _dbus_string_free (&decoded);
870 return FALSE;
871}
872
881 dbus_bool_t
882_dbus_write_uuid_file (const DBusString *filename,
883 const DBusGUID *uuid,
884 DBusError *error)
885{
886 DBusString encoded;
887
888 if (!_dbus_string_init (&encoded))
889 {
890 _DBUS_SET_OOM (error);
891 return FALSE;
892 }
893
894 if (!_dbus_uuid_encode (uuid, &encoded))
895 {
896 _DBUS_SET_OOM (error);
897 goto error;
898 }
899
900 if (!_dbus_string_append_byte (&encoded, '\n'))
901 {
902 _DBUS_SET_OOM (error);
903 goto error;
904 }
905
906 if (!_dbus_string_save_to_file (&encoded, filename, TRUE, error))
907 goto error;
908
909 _dbus_string_free (&encoded);
910
911 _DBUS_ASSERT_ERROR_IS_CLEAR (error);
912 return TRUE;
913
914 error:
915 _DBUS_ASSERT_ERROR_IS_SET (error);
916 _dbus_string_free (&encoded);
917 return FALSE;
918}
919
930 dbus_bool_t
931_dbus_read_uuid_file (const DBusString *filename,
932 DBusGUID *uuid,
933 dbus_bool_t create_if_not_found,
934 DBusError *error)
935{
936 DBusError read_error = DBUS_ERROR_INIT;
937
938 if (_dbus_read_uuid_file_without_creating (filename, uuid, &read_error))
939 return TRUE;
940
941 if (!create_if_not_found)
942 {
943 dbus_move_error (&read_error, error);
944 return FALSE;
945 }
946
947 /* If the file exists and contains junk, we want to keep that error
948 * message instead of overwriting it with a "file exists" error
949 * message when we try to write
950 */
951 if (dbus_error_has_name (&read_error, DBUS_ERROR_INVALID_FILE_CONTENT))
952 {
953 dbus_move_error (&read_error, error);
954 return FALSE;
955 }
956 else
957 {
958 dbus_error_free (&read_error);
959
960 if (!_dbus_generate_uuid (uuid, error))
961 return FALSE;
962
963 return _dbus_write_uuid_file (filename, uuid, error);
964 }
965}
966
967/* Protected by _DBUS_LOCK (machine_uuid) */
968static int machine_uuid_initialized_generation = 0;
969static DBusGUID machine_uuid;
970
982 dbus_bool_t
983_dbus_get_local_machine_uuid_encoded (DBusString *uuid_str,
984 DBusError *error)
985{
986 dbus_bool_t ok = TRUE;
987
988 if (!_DBUS_LOCK (machine_uuid))
989 {
990 _DBUS_SET_OOM (error);
991 return FALSE;
992 }
993
994 if (machine_uuid_initialized_generation != _dbus_current_generation)
995 {
996 if (!_dbus_read_local_machine_uuid (&machine_uuid, FALSE, error))
997 ok = FALSE;
998 }
999
1000 if (ok)
1001 {
1002 if (!_dbus_uuid_encode (&machine_uuid, uuid_str))
1003 {
1004 ok = FALSE;
1005 _DBUS_SET_OOM (error);
1006 }
1007 }
1008
1009 _DBUS_UNLOCK (machine_uuid);
1010
1011 return ok;
1012}
1013
1014#ifndef DBUS_DISABLE_CHECKS
1015void
1016_dbus_warn_return_if_fail (const char *function,
1017 const char *assertion,
1018 const char *file,
1019 int line)
1020{
1021 _dbus_warn_check_failed (
1022 "arguments to %s() were incorrect, assertion \"%s\" failed in file %s line %d.\n"
1023 "This is normally a bug in some application using the D-Bus library.\n",
1024 function, assertion, file, line);
1025}
1026#endif
1027
1028#ifndef DBUS_DISABLE_ASSERT
1041void
1042_dbus_real_assert (dbus_bool_t condition,
1043 const char *condition_text,
1044 const char *file,
1045 int line,
1046 const char *func)
1047{
1048 if (_DBUS_UNLIKELY (!condition))
1049 {
1050 _dbus_warn ("assertion failed \"%s\" file \"%s\" line %d function %s",
1051 condition_text, file, line, func);
1052 _dbus_abort ();
1053 }
1054}
1055
1066void
1067_dbus_real_assert_not_reached (const char *explanation,
1068 const char *file,
1069 int line)
1070{
1071 _dbus_warn ("File \"%s\" line %d should not have been reached: %s",
1072 file, line, explanation);
1073 _dbus_abort ();
1074}
1075#endif /* DBUS_DISABLE_ASSERT */
1076
1077#ifdef DBUS_ENABLE_EMBEDDED_TESTS
1078static dbus_bool_t
1079run_failing_each_malloc (int n_mallocs,
1080 const char *description,
1081 DBusTestMemoryFunction func,
1082 void *data)
1083{
1084 n_mallocs += 10; /* fudge factor to ensure reallocs etc. are covered */
1085
1086 while (n_mallocs >= 0)
1087 {
1088 _dbus_set_fail_alloc_counter (n_mallocs);
1089
1090 _dbus_test_diag ("%s: will fail malloc %d and %d that follow",
1091 description, n_mallocs,
1092 _dbus_get_fail_alloc_failures () - 1);
1093
1094 if (!(* func) (data, FALSE))
1095 return FALSE;
1096
1097 n_mallocs -= 1;
1098 }
1099
1100 _dbus_set_fail_alloc_counter (-1);
1101
1102 return TRUE;
1103}
1104
1118 dbus_bool_t
1119_dbus_test_oom_handling (const char *description,
1120 DBusTestMemoryFunction func,
1121 void *data)
1122{
1123 int approx_mallocs;
1124 const char *setting;
1125 int max_failures_to_try;
1126 int i;
1127
1128 /* Run once to see about how many mallocs are involved */
1129
1130 _dbus_set_fail_alloc_counter (-1);
1131
1132 _dbus_test_diag ("Running \"%s\" once to count mallocs", description);
1133
1134 if (!(* func) (data, TRUE))
1135 return FALSE;
1136
1137 /* We have decremented the counter once per allocation, so for example
1138 * if there were 10 allocations, it will have changed from -1 to -11.
1139 * Subtract from -1 to get the positive number of allocations that took
1140 * place. */
1141 approx_mallocs = -1 - _dbus_get_fail_alloc_counter ();
1142
1143 _dbus_test_diag ("\"%s\" has about %d mallocs in total",
1144 description, approx_mallocs);
1145
1146 setting = _dbus_getenv ("DBUS_TEST_MALLOC_FAILURES");
1147
1148 if (setting != NULL)
1149 {
1150 DBusString str;
1151 long v;
1152 _dbus_string_init_const (&str, setting);
1153 v = 4;
1154 if (!_dbus_string_parse_int (&str, 0, &v, NULL))
1155 _dbus_warn ("couldn't parse '%s' as integer\n", setting);
1156 max_failures_to_try = v;
1157 }
1158 else
1159 {
1160 max_failures_to_try = 4;
1161 }
1162
1163 if (RUNNING_ON_VALGRIND && _dbus_getenv ("DBUS_TEST_SLOW") == NULL)
1164 {
1165 /* The full OOM testing is slow, valgrind is slow, so the
1166 * combination is just horrible. Only do this if the user
1167 * asked for extra-slow tests. */
1168 max_failures_to_try = 0;
1169 }
1170
1171 if (max_failures_to_try < 1)
1172 {
1173 _dbus_test_diag ("not testing OOM handling");
1174 return TRUE;
1175 }
1176
1177 _dbus_test_diag ("testing \"%s\" with up to %d consecutive malloc failures",
1178 description, max_failures_to_try);
1179
1180 i = setting ? max_failures_to_try - 1 : 1;
1181 while (i < max_failures_to_try)
1182 {
1183 _dbus_test_diag ("testing \"%s\" with %d consecutive malloc failures",
1184 description, i + 1);
1185
1186 _dbus_set_fail_alloc_failures (i);
1187 if (!run_failing_each_malloc (approx_mallocs, description, func, data))
1188 return FALSE;
1189 ++i;
1190 }
1191
1192 _dbus_verbose ("\"%s\" coped OK with malloc failures\n", description);
1193
1194 return TRUE;
1195}
1196#endif /* DBUS_ENABLE_EMBEDDED_TESTS */
1197
DBUS_ERROR_INIT
#define DBUS_ERROR_INIT
Expands to a suitable initializer for a DBusError on the stack.
Definition dbus-errors.h:64
dbus_move_error
void dbus_move_error(DBusError *src, DBusError *dest)
Moves an error src into dest, freeing src and overwriting dest.
Definition dbus-errors.c:281
dbus_error_has_name
dbus_bool_t dbus_error_has_name(const DBusError *error, const char *name)
Checks whether the error is set and has the given name.
Definition dbus-errors.c:304
dbus_error_init
void dbus_error_init(DBusError *error)
Initializes a DBusError structure.
Definition dbus-errors.c:190
dbus_set_error
void dbus_set_error(DBusError *error, const char *name, const char *format,...)
Assigns an error name and message to a DBusError.
Definition dbus-errors.c:356
dbus_error_free
void dbus_error_free(DBusError *error)
Frees an error that's been set (or just initialized), then reinitializes the error as in dbus_error_i...
Definition dbus-errors.c:213
_dbus_string_save_to_file
dbus_bool_t _dbus_string_save_to_file(const DBusString *str, const DBusString *filename, dbus_bool_t world_readable, DBusError *error)
Writes a string out to a file.
Definition dbus-file-unix.c:208
_dbus_file_get_contents
dbus_bool_t _dbus_file_get_contents(DBusString *str, const DBusString *filename, DBusError *error)
Appends the contents of the given file to the string, returning error code.
Definition dbus-file-unix.c:63
_dbus_assert
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
Definition dbus-internals.h:153
_DBUS_UNLOCK
#define _DBUS_UNLOCK(name)
Unlocks a global lock.
Definition dbus-internals.h:438
_DBUS_LOCK
#define _DBUS_LOCK(name)
Locks a global lock, initializing it first if necessary.
Definition dbus-internals.h:437
_dbus_real_assert_not_reached
void _dbus_real_assert_not_reached(const char *explanation, const char *file, int line)
Internals of _dbus_assert_not_reached(); it's a function rather than a macro with the inline code so ...
Definition dbus-internals.c:1067
_dbus_generate_uuid
dbus_bool_t _dbus_generate_uuid(DBusGUID *uuid, DBusError *error)
Generates a new UUID.
Definition dbus-internals.c:752
_dbus_warn_check_failed
void _dbus_warn_check_failed(const char *format,...)
Prints a "critical" warning to stderr when an assertion fails; differs from _dbus_warn primarily in t...
Definition dbus-internals.c:310
_dbus_strdup
char * _dbus_strdup(const char *str)
Duplicates a string.
Definition dbus-internals.c:621
_dbus_read_uuid_file
dbus_bool_t _dbus_read_uuid_file(const DBusString *filename, DBusGUID *uuid, dbus_bool_t create_if_not_found, DBusError *error)
Reads (and optionally writes) a uuid to a file.
Definition dbus-internals.c:931
_dbus_string_array_contains
dbus_bool_t _dbus_string_array_contains(const char **array, const char *str)
Checks whether a string array contains the given string.
Definition dbus-internals.c:712
_dbus_get_local_machine_uuid_encoded
dbus_bool_t _dbus_get_local_machine_uuid_encoded(DBusString *uuid_str, DBusError *error)
Gets the hex-encoded UUID of the machine this function is executed on.
Definition dbus-internals.c:983
_dbus_real_assert
void _dbus_real_assert(dbus_bool_t condition, const char *condition_text, const char *file, int line, const char *func)
Internals of _dbus_assert(); it's a function rather than a macro with the inline code so that the ass...
Definition dbus-internals.c:1042
_dbus_write_uuid_file
dbus_bool_t _dbus_write_uuid_file(const DBusString *filename, const DBusGUID *uuid, DBusError *error)
Write the give UUID to a file.
Definition dbus-internals.c:882
_dbus_warn
void _dbus_warn(const char *format,...)
Prints a warning message to stderr.
Definition dbus-internals.c:278
_dbus_string_array_length
size_t _dbus_string_array_length(const char **array)
Returns the size of a string array.
Definition dbus-internals.c:735
_dbus_no_memory_message
const char * _dbus_no_memory_message
Fixed "out of memory" error message, just to avoid making up a different string every time and wastin...
Definition dbus-internals.c:216
_dbus_memdup
void * _dbus_memdup(const void *mem, size_t n_bytes)
Duplicates a block of memory.
Definition dbus-internals.c:649
_dbus_uuid_encode
dbus_bool_t _dbus_uuid_encode(const DBusGUID *uuid, DBusString *encoded)
Hex-encode a UUID.
Definition dbus-internals.c:788
_dbus_dup_string_array
char ** _dbus_dup_string_array(const char **array)
Duplicates a string array.
Definition dbus-internals.c:672
_dbus_generate_random_bytes_buffer
dbus_bool_t _dbus_generate_random_bytes_buffer(char *buffer, int n_bytes, DBusError *error)
Fills n_bytes of the given buffer with random bytes.
Definition dbus-sysdeps.c:491
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_current_generation
int _dbus_current_generation
_dbus_current_generation is used to track each time that dbus_shutdown() is called,...
Definition dbus-memory.c:790
dbus_new0
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0().
Definition dbus-memory.h:60
dbus_free_string_array
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
Definition dbus-memory.c:758
dbus_malloc
void * dbus_malloc(size_t bytes)
Allocates the given number of bytes, as with standard malloc().
Definition dbus-memory.c:470
DBUS_ERROR_INVALID_FILE_CONTENT
#define DBUS_ERROR_INVALID_FILE_CONTENT
A file contains invalid syntax or is otherwise broken.
Definition dbus-protocol.h:450
_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_init
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition dbus-string.c:182
_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_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_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_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_parse_int
DBUS_PRIVATE_EXPORT dbus_bool_t _dbus_string_parse_int(const DBusString *str, int start, long *value_return, int *end_return)
Parses an integer contained in a DBusString.
Definition dbus-sysdeps.c:371
_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_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_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_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_logv
void _dbus_logv(DBusSystemLogSeverity severity, const char *msg, va_list args)
Log a message to the system log file (e.g.
Definition dbus-sysdeps-unix.c:5208
_dbus_read_local_machine_uuid
dbus_bool_t _dbus_read_local_machine_uuid(DBusGUID *machine_id, dbus_bool_t create_if_not_found, DBusError *error)
Reads the uuid of the machine we're running on from the dbus configuration.
Definition dbus-sysdeps-unix.c:4421
_dbus_getenv
const char * _dbus_getenv(const char *varname)
Wrapper for getenv().
Definition dbus-sysdeps.c:197
_dbus_abort
void _dbus_abort(void)
Aborts the program with SIGABRT (dumping core).
Definition dbus-sysdeps.c:89
_dbus_get_real_time
void _dbus_get_real_time(dbus_int64_t *tv_sec, long *tv_usec)
Get current time, as in gettimeofday().
Definition dbus-sysdeps-unix.c:3412
dbus_int64_t
_DBUS_GNUC_EXTENSION typedef long dbus_int64_t
A 64-bit signed integer.
Definition dbus-arch-deps.h:37
dbus_bool_t
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition dbus-types.h:37
DBUS_INT64_MODIFIER
#define DBUS_INT64_MODIFIER
A string literal for a length modifier that is appropriate to print the dbus_int64_t and dbus_uint64_...
Definition dbus-arch-deps.h:39
DBusError
Object representing an exception.
Definition dbus-errors.h:51
DBusError::name
const char * name
public error name field
Definition dbus-errors.h:52
DBusError::message
const char * message
public error message field
Definition dbus-errors.h:53
DBusString
Definition dbus-string.h:47
DBusGUID
A globally unique ID ; we have one for each DBusServer, and also one for each machine with libdbus in...
Definition dbus-internals.h:458
DBusGUID::as_uint32s
dbus_uint32_t as_uint32s[DBUS_UUID_LENGTH_WORDS]
guid as four uint32 values
Definition dbus-internals.h:459
DBusGUID::as_bytes
char as_bytes[DBUS_UUID_LENGTH_BYTES]
guid as 16 single-byte values
Definition dbus-internals.h:460