static void verify_list (DBusList **list) { DBusList *link; int length; link = *list; if (link == NULL) return; if (link->next == link) { _dbus_assert (link->prev == link); _dbus_assert (*list == link); return; } length = 0; do { length += 1; _dbus_assert (link->prev->next == link); _dbus_assert (link->next->prev == link); link = link->next; } while (link != *list); _dbus_assert (length == _dbus_list_get_length (list)); if (length == 1) _dbus_assert (_dbus_list_length_is_one (list)); else _dbus_assert (!_dbus_list_length_is_one (list)); }
dbus_bool_t _dbus_loop_dispatch (DBusLoop *loop) { #if MAINLOOP_SPEW _dbus_verbose (" %d connections to dispatch\n", _dbus_list_get_length (&loop->need_dispatch)); #endif if (loop->need_dispatch == NULL) return FALSE; next: while (loop->need_dispatch != NULL) { DBusConnection *connection = _dbus_list_pop_first (&loop->need_dispatch); while (TRUE) { DBusDispatchStatus status; status = dbus_connection_dispatch (connection); if (status == DBUS_DISPATCH_COMPLETE) { dbus_connection_unref (connection); goto next; } else { if (status == DBUS_DISPATCH_NEED_MEMORY) _dbus_wait_for_memory (); } } } return TRUE; }
/** * @ingroup DBusListInternals * Unit test for DBusList * @returns #TRUE on success. */ dbus_bool_t _dbus_list_test (void) { DBusList *list1; DBusList *list2; DBusList *link1; DBusList *link2; DBusList *copy1; DBusList *copy2; int i; list1 = NULL; list2 = NULL; /* Test append and prepend */ i = 0; while (i < 10) { if (!_dbus_list_append (&list1, _DBUS_INT_TO_POINTER (i))) _dbus_assert_not_reached ("could not allocate for append"); if (!_dbus_list_prepend (&list2, _DBUS_INT_TO_POINTER (i))) _dbus_assert_not_reached ("count not allocate for prepend"); ++i; verify_list (&list1); verify_list (&list2); _dbus_assert (_dbus_list_get_length (&list1) == i); _dbus_assert (_dbus_list_get_length (&list2) == i); } _dbus_assert (is_ascending_sequence (&list1)); _dbus_assert (is_descending_sequence (&list2)); /* Test list clear */ _dbus_list_clear (&list1); _dbus_list_clear (&list2); verify_list (&list1); verify_list (&list2); /* Test get_first, get_last, pop_first, pop_last */ i = 0; while (i < 10) { _dbus_list_append (&list1, _DBUS_INT_TO_POINTER (i)); _dbus_list_prepend (&list2, _DBUS_INT_TO_POINTER (i)); ++i; } --i; while (i >= 0) { void *got_data1; void *got_data2; void *data1; void *data2; got_data1 = _dbus_list_get_last (&list1); got_data2 = _dbus_list_get_first (&list2); data1 = _dbus_list_pop_last (&list1); data2 = _dbus_list_pop_first (&list2); _dbus_assert (got_data1 == data1); _dbus_assert (got_data2 == data2); _dbus_assert (_DBUS_POINTER_TO_INT (data1) == i); _dbus_assert (_DBUS_POINTER_TO_INT (data2) == i); verify_list (&list1); verify_list (&list2); _dbus_assert (is_ascending_sequence (&list1)); _dbus_assert (is_descending_sequence (&list2)); --i; } _dbus_assert (list1 == NULL); _dbus_assert (list2 == NULL); /* Test get_first_link, get_last_link, pop_first_link, pop_last_link */ i = 0; while (i < 10) { _dbus_list_append (&list1, _DBUS_INT_TO_POINTER (i)); _dbus_list_prepend (&list2, _DBUS_INT_TO_POINTER (i)); ++i; } --i; while (i >= 0) { DBusList *got_link1; DBusList *got_link2; DBusList *link1; DBusList *link2; void *data1; void *data2; got_link1 = _dbus_list_get_last_link (&list1); got_link2 = _dbus_list_get_first_link (&list2); link1 = _dbus_list_pop_last_link (&list1); link2 = _dbus_list_pop_first_link (&list2); _dbus_assert (got_link1 == link1); _dbus_assert (got_link2 == link2); data1 = link1->data; data2 = link2->data; _dbus_list_free_link (link1); _dbus_list_free_link (link2); _dbus_assert (_DBUS_POINTER_TO_INT (data1) == i); _dbus_assert (_DBUS_POINTER_TO_INT (data2) == i); verify_list (&list1); verify_list (&list2); _dbus_assert (is_ascending_sequence (&list1)); _dbus_assert (is_descending_sequence (&list2)); --i; } _dbus_assert (list1 == NULL); _dbus_assert (list2 == NULL); /* Test iteration */ i = 0; while (i < 10) { _dbus_list_append (&list1, _DBUS_INT_TO_POINTER (i)); _dbus_list_prepend (&list2, _DBUS_INT_TO_POINTER (i)); ++i; verify_list (&list1); verify_list (&list2); _dbus_assert (_dbus_list_get_length (&list1) == i); _dbus_assert (_dbus_list_get_length (&list2) == i); } _dbus_assert (is_ascending_sequence (&list1)); _dbus_assert (is_descending_sequence (&list2)); --i; link2 = _dbus_list_get_first_link (&list2); while (link2 != NULL) { verify_list (&link2); /* pretend this link is the head */ _dbus_assert (_DBUS_POINTER_TO_INT (link2->data) == i); link2 = _dbus_list_get_next_link (&list2, link2); --i; } i = 0; link1 = _dbus_list_get_first_link (&list1); while (link1 != NULL) { verify_list (&link1); /* pretend this link is the head */ _dbus_assert (_DBUS_POINTER_TO_INT (link1->data) == i); link1 = _dbus_list_get_next_link (&list1, link1); ++i; } --i; link1 = _dbus_list_get_last_link (&list1); while (link1 != NULL) { verify_list (&link1); /* pretend this link is the head */ _dbus_assert (_DBUS_POINTER_TO_INT (link1->data) == i); link1 = _dbus_list_get_prev_link (&list1, link1); --i; } _dbus_list_clear (&list1); _dbus_list_clear (&list2); /* Test remove */ i = 0; while (i < 10) { _dbus_list_append (&list1, _DBUS_INT_TO_POINTER (i)); _dbus_list_prepend (&list2, _DBUS_INT_TO_POINTER (i)); ++i; } --i; while (i >= 0) { if ((i % 2) == 0) { if (!_dbus_list_remove (&list1, _DBUS_INT_TO_POINTER (i))) _dbus_assert_not_reached ("element should have been in list"); if (!_dbus_list_remove (&list2, _DBUS_INT_TO_POINTER (i))) _dbus_assert_not_reached ("element should have been in list"); verify_list (&list1); verify_list (&list2); } --i; } _dbus_assert (all_odd_values (&list1)); _dbus_assert (all_odd_values (&list2)); _dbus_list_clear (&list1); _dbus_list_clear (&list2); /* test removing the other half of the elements */ i = 0; while (i < 10) { _dbus_list_append (&list1, _DBUS_INT_TO_POINTER (i)); _dbus_list_prepend (&list2, _DBUS_INT_TO_POINTER (i)); ++i; } --i; while (i >= 0) { if ((i % 2) != 0) { if (!_dbus_list_remove (&list1, _DBUS_INT_TO_POINTER (i))) _dbus_assert_not_reached ("element should have been in list"); if (!_dbus_list_remove (&list2, _DBUS_INT_TO_POINTER (i))) _dbus_assert_not_reached ("element should have been in list"); verify_list (&list1); verify_list (&list2); } --i; } _dbus_assert (all_even_values (&list1)); _dbus_assert (all_even_values (&list2)); /* clear list using remove_link */ while (list1 != NULL) { _dbus_list_remove_link (&list1, list1); verify_list (&list1); } while (list2 != NULL) { _dbus_list_remove_link (&list2, list2); verify_list (&list2); } /* Test remove link more generally */ i = 0; while (i < 10) { _dbus_list_append (&list1, _DBUS_INT_TO_POINTER (i)); _dbus_list_prepend (&list2, _DBUS_INT_TO_POINTER (i)); ++i; } --i; link2 = _dbus_list_get_first_link (&list2); while (link2 != NULL) { DBusList *next = _dbus_list_get_next_link (&list2, link2); _dbus_assert (_DBUS_POINTER_TO_INT (link2->data) == i); if ((i % 2) == 0) _dbus_list_remove_link (&list2, link2); verify_list (&list2); link2 = next; --i; } _dbus_assert (all_odd_values (&list2)); _dbus_list_clear (&list2); i = 0; link1 = _dbus_list_get_first_link (&list1); while (link1 != NULL) { DBusList *next = _dbus_list_get_next_link (&list1, link1); _dbus_assert (_DBUS_POINTER_TO_INT (link1->data) == i); if ((i % 2) != 0) _dbus_list_remove_link (&list1, link1); verify_list (&list1); link1 = next; ++i; } _dbus_assert (all_even_values (&list1)); _dbus_list_clear (&list1); /* Test copying a list */ i = 0; while (i < 10) { _dbus_list_append (&list1, _DBUS_INT_TO_POINTER (i)); _dbus_list_prepend (&list2, _DBUS_INT_TO_POINTER (i)); ++i; } /* bad pointers, because they are allowed in the copy dest */ copy1 = _DBUS_INT_TO_POINTER (0x342234); copy2 = _DBUS_INT_TO_POINTER (23); _dbus_list_copy (&list1, ©1); verify_list (&list1); verify_list (©1); _dbus_assert (lists_equal (&list1, ©1)); _dbus_list_copy (&list2, ©2); verify_list (&list2); verify_list (©2); _dbus_assert (lists_equal (&list2, ©2)); /* Now test copying empty lists */ _dbus_list_clear (&list1); _dbus_list_clear (&list2); _dbus_list_clear (©1); _dbus_list_clear (©2); /* bad pointers, because they are allowed in the copy dest */ copy1 = _DBUS_INT_TO_POINTER (0x342234); copy2 = _DBUS_INT_TO_POINTER (23); _dbus_list_copy (&list1, ©1); verify_list (&list1); verify_list (©1); _dbus_assert (lists_equal (&list1, ©1)); _dbus_list_copy (&list2, ©2); verify_list (&list2); verify_list (©2); _dbus_assert (lists_equal (&list2, ©2)); _dbus_list_clear (&list1); _dbus_list_clear (&list2); /* insert_before on empty list */ _dbus_list_insert_before (&list1, NULL, _DBUS_INT_TO_POINTER (0)); verify_list (&list1); /* inserting before first element */ _dbus_list_insert_before (&list1, list1, _DBUS_INT_TO_POINTER (2)); verify_list (&list1); _dbus_assert (is_descending_sequence (&list1)); /* inserting in the middle */ _dbus_list_insert_before (&list1, list1->next, _DBUS_INT_TO_POINTER (1)); verify_list (&list1); _dbus_assert (is_descending_sequence (&list1)); /* using insert_before to append */ _dbus_list_insert_before (&list1, NULL, _DBUS_INT_TO_POINTER (-1)); verify_list (&list1); _dbus_assert (is_descending_sequence (&list1)); _dbus_list_clear (&list1); /* insert_after on empty list */ _dbus_list_insert_after (&list1, NULL, _DBUS_INT_TO_POINTER (0)); verify_list (&list1); /* inserting after first element */ _dbus_list_insert_after (&list1, list1, _DBUS_INT_TO_POINTER (1)); verify_list (&list1); _dbus_assert (is_ascending_sequence (&list1)); /* inserting at the end */ _dbus_list_insert_after (&list1, list1->next, _DBUS_INT_TO_POINTER (2)); verify_list (&list1); _dbus_assert (is_ascending_sequence (&list1)); /* using insert_after to prepend */ _dbus_list_insert_after (&list1, NULL, _DBUS_INT_TO_POINTER (-1)); verify_list (&list1); _dbus_assert (is_ascending_sequence (&list1)); _dbus_list_clear (&list1); /* using remove_last */ _dbus_list_append (&list1, _DBUS_INT_TO_POINTER (2)); _dbus_list_append (&list1, _DBUS_INT_TO_POINTER (1)); _dbus_list_append (&list1, _DBUS_INT_TO_POINTER (3)); _dbus_list_remove_last (&list1, _DBUS_INT_TO_POINTER (2)); verify_list (&list1); _dbus_assert (is_ascending_sequence (&list1)); _dbus_list_clear (&list1); return TRUE; }
/* This code only gets executed the first time the * config files are parsed. It is not executed * when config files are reloaded. */ static dbus_bool_t process_config_first_time_only (BusContext *context, BusConfigParser *parser, const DBusString *address, BusContextFlags flags, DBusError *error) { DBusString log_prefix; DBusList *link; DBusList **addresses; const char *user, *pidfile; char **auth_mechanisms; DBusList **auth_mechanisms_list; int len; dbus_bool_t retval; _DBUS_ASSERT_ERROR_IS_CLEAR (error); retval = FALSE; auth_mechanisms = NULL; pidfile = NULL; _dbus_init_system_log (TRUE); if (flags & BUS_CONTEXT_FLAG_SYSTEMD_ACTIVATION) context->systemd_activation = TRUE; else context->systemd_activation = FALSE; /* Check for an existing pid file. Of course this is a race; * we'd have to use fcntl() locks on the pid file to * avoid that. But we want to check for the pid file * before overwriting any existing sockets, etc. */ if (flags & BUS_CONTEXT_FLAG_WRITE_PID_FILE) pidfile = bus_config_parser_get_pidfile (parser); if (pidfile != NULL) { DBusString u; DBusStat stbuf; _dbus_string_init_const (&u, pidfile); if (_dbus_stat (&u, &stbuf, NULL)) { #ifdef DBUS_CYGWIN DBusString p; long /* int */ pid; _dbus_string_init (&p); _dbus_file_get_contents(&p, &u, NULL); _dbus_string_parse_int(&p, 0, &pid, NULL); _dbus_string_free(&p); if ((kill((int)pid, 0))) { dbus_set_error(NULL, DBUS_ERROR_FILE_EXISTS, "pid %ld not running, removing stale pid file\n", pid); _dbus_delete_file(&u, NULL); } else { #endif dbus_set_error (error, DBUS_ERROR_FAILED, "The pid file \"%s\" exists, if the message bus is not running, remove this file", pidfile); goto failed; #ifdef DBUS_CYGWIN } #endif } } /* keep around the pid filename so we can delete it later */ context->pidfile = _dbus_strdup (pidfile); /* note that type may be NULL */ context->type = _dbus_strdup (bus_config_parser_get_type (parser)); if (bus_config_parser_get_type (parser) != NULL && context->type == NULL) goto oom; user = bus_config_parser_get_user (parser); if (user != NULL) { context->user = _dbus_strdup (user); if (context->user == NULL) goto oom; } /* Set up the prefix for syslog messages */ if (!_dbus_string_init (&log_prefix)) goto oom; if (context->type && !strcmp (context->type, "system")) { if (!_dbus_string_append (&log_prefix, "[system] ")) goto oom; } else if (context->type && !strcmp (context->type, "session")) { DBusCredentials *credentials; credentials = _dbus_credentials_new_from_current_process (); if (!credentials) goto oom; if (!_dbus_string_append (&log_prefix, "[session ")) { _dbus_credentials_unref (credentials); goto oom; } if (!_dbus_credentials_to_string_append (credentials, &log_prefix)) { _dbus_credentials_unref (credentials); goto oom; } if (!_dbus_string_append (&log_prefix, "] ")) { _dbus_credentials_unref (credentials); goto oom; } _dbus_credentials_unref (credentials); } if (!_dbus_string_steal_data (&log_prefix, &context->log_prefix)) goto oom; _dbus_string_free (&log_prefix); /* Build an array of auth mechanisms */ auth_mechanisms_list = bus_config_parser_get_mechanisms (parser); len = _dbus_list_get_length (auth_mechanisms_list); if (len > 0) { int i; auth_mechanisms = dbus_new0 (char*, len + 1); if (auth_mechanisms == NULL) goto oom; i = 0; link = _dbus_list_get_first_link (auth_mechanisms_list); while (link != NULL) { auth_mechanisms[i] = _dbus_strdup (link->data); if (auth_mechanisms[i] == NULL) goto oom; link = _dbus_list_get_next_link (auth_mechanisms_list, link); i += 1; } }
static dbus_bool_t test_command_line (const char *arg1, ...) { int i, original_argc, shell_argc; char **shell_argv; char **original_argv; char *command_line, *tmp; DBusString str; DBusList *list = NULL, *node; va_list var_args; DBusError error; va_start (var_args, arg1); _dbus_list_append (&list, (char *)arg1); do { tmp = va_arg (var_args, char *); if (!tmp) break; _dbus_list_append (&list, tmp); } while (tmp); va_end (var_args); original_argc = _dbus_list_get_length (&list); original_argv = dbus_new (char *, original_argc); _dbus_string_init (&str); for (i = 0, node = _dbus_list_get_first_link (&list); i < original_argc && node; i++, node = _dbus_list_get_next_link (&list, node)) { original_argv[i] = node->data; if (i > 0) _dbus_string_append_byte (&str, ' '); _dbus_string_append (&str, original_argv[i]); } _dbus_list_clear (&list); command_line = _dbus_string_get_data (&str); printf ("\n\nTesting command line '%s'\n", command_line); dbus_error_init (&error); if (!_dbus_shell_parse_argv (command_line, &shell_argc, &shell_argv, &error)) { fprintf (stderr, "Error parsing command line: %s\n", error.message ? error.message : ""); return FALSE; } else { if (shell_argc != original_argc) { printf ("Number of arguments returned (%d) don't match original (%d)\n", shell_argc, original_argc); return FALSE; } printf ("Number of arguments: %d\n", shell_argc); for (i = 0; i < shell_argc; i++) { char *unquoted; unquoted = _dbus_shell_unquote (original_argv[i]); if (strcmp (unquoted ? unquoted : "", shell_argv[i] ? shell_argv[i] : "")) { printf ("Position %d, returned argument (%s) does not match original (%s)\n", i, shell_argv[i], unquoted); dbus_free (unquoted); return FALSE; } dbus_free (unquoted); if (shell_argv[i]) printf ("Argument %d = %s\n", i, shell_argv[i]); } dbus_free_string_array (shell_argv); } _dbus_string_free (&str); return TRUE; }
/** * _dbus_shell_parse_argv: * * Parses a command line into an argument vector, in much the same way * the shell would, but without many of the expansions the shell would * perform (variable expansion, globs, operators, filename expansion, * etc. are not supported). The results are defined to be the same as * those you would get from a UNIX98 /bin/sh, as long as the input * contains none of the unsupported shell expansions. If the input * does contain such expansions, they are passed through * literally. Free the returned vector with dbus_free_string_array(). * * @command_line: command line to parse * @argcp: return location for number of args * @argvp: return location for array of args * @error: error information **/ dbus_bool_t _dbus_shell_parse_argv (const char *command_line, int *argcp, char ***argvp, DBusError *error) { /* Code based on poptParseArgvString() from libpopt */ int argc = 0; char **argv = NULL; DBusList *tokens = NULL; int i; DBusList *tmp_list; if (!command_line) { _dbus_verbose ("Command line is NULL\n"); return FALSE; } tokens = tokenize_command_line (command_line, error); if (tokens == NULL) { _dbus_verbose ("No tokens for command line '%s'\n", command_line); return FALSE; } /* Because we can't have introduced any new blank space into the * tokens (we didn't do any new expansions), we don't need to * perform field splitting. If we were going to honor IFS or do any * expansions, we would have to do field splitting on each word * here. Also, if we were going to do any expansion we would need to * remove any zero-length words that didn't contain quotes * originally; but since there's no expansion we know all words have * nonzero length, unless they contain quotes. * * So, we simply remove quotes, and don't do any field splitting or * empty word removal, since we know there was no way to introduce * such things. */ argc = _dbus_list_get_length (&tokens); argv = dbus_new (char *, argc + 1); if (!argv) { _DBUS_SET_OOM (error); goto error; } i = 0; tmp_list = tokens; while (tmp_list) { argv[i] = _dbus_shell_unquote (tmp_list->data); if (!argv[i]) { int j; for (j = 0; j < i; j++) dbus_free(argv[j]); dbus_free (argv); _DBUS_SET_OOM (error); goto error; } tmp_list = _dbus_list_get_next_link (&tokens, tmp_list); ++i; } argv[argc] = NULL; _dbus_list_foreach (&tokens, (DBusForeachFunction) dbus_free, NULL); _dbus_list_clear (&tokens); if (argcp) *argcp = argc; if (argvp) *argvp = argv; else dbus_free_string_array (argv); return TRUE; error: _dbus_list_foreach (&tokens, (DBusForeachFunction) dbus_free, NULL); _dbus_list_clear (&tokens); return FALSE; }
/* This code only gets executed the first time the config files are parsed. It is not executed when config files are reloaded.*/ static dbus_bool_t process_config_first_time_only (BusContext *context, BusConfigParser *parser, DBusError *error) { DBusList *link; DBusList **addresses; const char *user, *pidfile; char **auth_mechanisms; DBusList **auth_mechanisms_list; int len; dbus_bool_t retval; _DBUS_ASSERT_ERROR_IS_CLEAR (error); retval = FALSE; auth_mechanisms = NULL; /* Check for an existing pid file. Of course this is a race; * we'd have to use fcntl() locks on the pid file to * avoid that. But we want to check for the pid file * before overwriting any existing sockets, etc. */ pidfile = bus_config_parser_get_pidfile (parser); if (pidfile != NULL) { DBusString u; DBusStat stbuf; _dbus_string_init_const (&u, pidfile); if (_dbus_stat (&u, &stbuf, NULL)) { dbus_set_error (error, DBUS_ERROR_FAILED, "The pid file \"%s\" exists, if the message bus is not running, remove this file", pidfile); goto failed; } } /* keep around the pid filename so we can delete it later */ context->pidfile = _dbus_strdup (pidfile); /* Build an array of auth mechanisms */ auth_mechanisms_list = bus_config_parser_get_mechanisms (parser); len = _dbus_list_get_length (auth_mechanisms_list); if (len > 0) { int i; auth_mechanisms = dbus_new0 (char*, len + 1); if (auth_mechanisms == NULL) { BUS_SET_OOM (error); goto failed; } i = 0; link = _dbus_list_get_first_link (auth_mechanisms_list); while (link != NULL) { auth_mechanisms[i] = _dbus_strdup (link->data); if (auth_mechanisms[i] == NULL) { BUS_SET_OOM (error); goto failed; } link = _dbus_list_get_next_link (auth_mechanisms_list, link); } }
/* This code only gets executed the first time the * config files are parsed. It is not executed * when config files are reloaded. */ static dbus_bool_t process_config_first_time_only (BusContext *context, BusConfigParser *parser, DBusError *error) { DBusString log_prefix; DBusList *link; DBusList **addresses; const char *user, *pidfile; char **auth_mechanisms; DBusList **auth_mechanisms_list; int len; dbus_bool_t retval; _DBUS_ASSERT_ERROR_IS_CLEAR (error); retval = FALSE; auth_mechanisms = NULL; /* Check for an existing pid file. Of course this is a race; * we'd have to use fcntl() locks on the pid file to * avoid that. But we want to check for the pid file * before overwriting any existing sockets, etc. */ pidfile = bus_config_parser_get_pidfile (parser); if (pidfile != NULL) { DBusString u; DBusStat stbuf; _dbus_string_init_const (&u, pidfile); if (_dbus_stat (&u, &stbuf, NULL)) { dbus_set_error (error, DBUS_ERROR_FAILED, "The pid file \"%s\" exists, if the message bus is not running, remove this file", pidfile); goto failed; } } /* keep around the pid filename so we can delete it later */ context->pidfile = _dbus_strdup (pidfile); /* note that type may be NULL */ context->type = _dbus_strdup (bus_config_parser_get_type (parser)); if (bus_config_parser_get_type (parser) != NULL && context->type == NULL) goto oom; user = bus_config_parser_get_user (parser); if (user != NULL) { context->user = _dbus_strdup (user); if (context->user == NULL) goto oom; } /* Set up the prefix for syslog messages */ if (!_dbus_string_init (&log_prefix)) goto oom; if (context->type && !strcmp (context->type, "system")) { if (!_dbus_string_append (&log_prefix, "[system] ")) goto oom; } else if (context->type && !strcmp (context->type, "session")) { DBusCredentials *credentials; credentials = _dbus_credentials_new_from_current_process (); if (!credentials) goto oom; if (!_dbus_string_append (&log_prefix, "[session ")) goto oom; if (!_dbus_credentials_to_string_append (credentials, &log_prefix)) goto oom; if (!_dbus_string_append (&log_prefix, "] ")) goto oom; _dbus_credentials_unref (credentials); } if (!_dbus_string_steal_data (&log_prefix, &context->log_prefix)) goto oom; _dbus_string_free (&log_prefix); /* Build an array of auth mechanisms */ auth_mechanisms_list = bus_config_parser_get_mechanisms (parser); len = _dbus_list_get_length (auth_mechanisms_list); if (len > 0) { int i; auth_mechanisms = dbus_new0 (char*, len + 1); if (auth_mechanisms == NULL) goto oom; i = 0; link = _dbus_list_get_first_link (auth_mechanisms_list); while (link != NULL) { auth_mechanisms[i] = _dbus_strdup (link->data); if (auth_mechanisms[i] == NULL) goto oom; link = _dbus_list_get_next_link (auth_mechanisms_list, link); } }