D-Bus: dbus-misc.c Source File

D-Bus 1.14.0

dbus-misc.c
1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-misc.c A few assorted public functions that don't fit elsewhere
3 *
4 * Copyright (C) 2006 Red Hat, Inc.
5 *
6 * Licensed under the Academic Free License version 2.1
7 *
8 * This program is free software; you can redistribute it and/or modify
9 * it under the terms of the GNU General Public License as published by
10 * the Free Software Foundation; either version 2 of the License, or
11 * (at your option) any later version.
12 *
13 * This program is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
16 * GNU General Public License for more details.
17 *
18 * You should have received a copy of the GNU General Public License
19 * along with this program; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 *
22 */
23
24#include <config.h>
25#include "dbus-misc.h"
26#include "dbus-internals.h"
27#include "dbus-string.h"
28#include <dbus/dbus-test-tap.h>
29
73char *
74dbus_try_get_local_machine_id (DBusError *error)
75{
76 DBusString uuid;
77 char *s;
78
79 s = NULL;
80
81 if (!_dbus_string_init (&uuid))
82 {
83 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
84 return NULL;
85 }
86
87 if (!_dbus_get_local_machine_uuid_encoded (&uuid, error))
88 {
89 _dbus_string_free (&uuid);
90 return NULL;
91 }
92
93 if (!_dbus_string_steal_data (&uuid, &s))
94 {
95 dbus_set_error (error, DBUS_ERROR_NO_MEMORY, NULL);
96 _dbus_string_free (&uuid);
97 return NULL;
98 }
99 else
100 {
101 _dbus_string_free (&uuid);
102 return s;
103 }
104
105}
106
122char *
123dbus_get_local_machine_id (void)
124{
125 DBusError error = DBUS_ERROR_INIT;
126 char *s;
127
128 s = dbus_try_get_local_machine_id (&error);
129
130 /* The documentation says dbus_get_local_machine_id() only fails on OOM;
131 * this can actually also fail if the D-Bus installation is faulty
132 * (no UUID), but we have no good way to report that. Historically,
133 * _dbus_get_local_machine_uuid_encoded was responsible for issuing the
134 * warning; now we do that here. */
135 if (s == NULL)
136 {
137 if (!dbus_error_has_name (&error, DBUS_ERROR_NO_MEMORY))
138 _dbus_warn_check_failed ("%s", error.message);
139
140 dbus_error_free (&error);
141 return NULL;
142 }
143
144 return s;
145}
146
210void
211dbus_get_version (int *major_version_p,
212 int *minor_version_p,
213 int *micro_version_p)
214{
215 if (major_version_p)
216 *major_version_p = DBUS_MAJOR_VERSION;
217 if (minor_version_p)
218 *minor_version_p = DBUS_MINOR_VERSION;
219 if (micro_version_p)
220 *micro_version_p = DBUS_MICRO_VERSION;
221}
222
223 /* End of public API */
DBUS_ERROR_INIT
#define DBUS_ERROR_INIT
Expands to a suitable initializer for a DBusError on the stack.
Definition: dbus-errors.h:62
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:302
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:354
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:211
_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:270
_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:951
NULL
#define NULL
A null pointer, defined appropriately for C or C++.
dbus_get_local_machine_id
char * dbus_get_local_machine_id(void)
Obtains the machine UUID of the machine this process is running on.
Definition: dbus-misc.c:123
DBUS_MICRO_VERSION
#define DBUS_MICRO_VERSION
The COMPILE TIME micro version of libdbus, that is, the "Z" in "X.Y.Z", as an integer literal.
dbus_try_get_local_machine_id
char * dbus_try_get_local_machine_id(DBusError *error)
Obtains the machine UUID of the machine this process is running on.
Definition: dbus-misc.c:74
DBUS_MINOR_VERSION
#define DBUS_MINOR_VERSION
The COMPILE TIME minor version of libdbus, that is, the "Y" in "X.Y.Z", as an integer literal.
DBUS_MAJOR_VERSION
#define DBUS_MAJOR_VERSION
The COMPILE TIME major version of libdbus, that is, the "X" in "X.Y.Z", as an integer literal.
dbus_get_version
void dbus_get_version(int *major_version_p, int *minor_version_p, int *micro_version_p)
Gets the DYNAMICALLY LINKED version of libdbus.
Definition: dbus-misc.c:211
DBUS_ERROR_NO_MEMORY
#define DBUS_ERROR_NO_MEMORY
There was not enough memory to complete an operation.
Definition: dbus-protocol.h:361
_dbus_string_init
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition: dbus-string.c:182
_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:672
_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_I...
Definition: dbus-string.c:278
DBusError
Object representing an exception.
Definition: dbus-errors.h:49
DBusError::message
const char * message
public error message field
Definition: dbus-errors.h:51
DBusString
Definition: dbus-string.h:43