D-Bus: dbus-uuidgen.c Source File

D-Bus 1.16.2

dbus-uuidgen.c
1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-uuidgen.c The guts of the dbus-uuidgen binary live in libdbus, in this file.
3 *
4 * Copyright (C) 2006 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#include <config.h>
26#include "dbus-uuidgen.h"
27#include "dbus-internals.h"
28#include "dbus-string.h"
29#include "dbus-protocol.h"
30
31#ifdef DBUS_WIN
32#error "dbus-uuidgen should not be needed on Windows"
33#endif
34
46static dbus_bool_t
47return_uuid (DBusGUID *uuid,
48 char **uuid_p,
49 DBusError *error)
50{
51 if (uuid_p)
52 {
53 DBusString encoded;
54
55 if (!_dbus_string_init (&encoded))
56 {
57 _DBUS_SET_OOM (error);
58 return FALSE;
59 }
60
61 if (!_dbus_uuid_encode (uuid, &encoded) ||
62 !_dbus_string_steal_data (&encoded, uuid_p))
63 {
64 _DBUS_SET_OOM (error);
65 _dbus_string_free (&encoded);
66 return FALSE;
67 }
68 _dbus_string_free (&encoded);
69 }
70 return TRUE;
71}
72
84dbus_bool_t
85_dbus_get_uuid (const char *filename,
86 char **uuid_p,
87 dbus_bool_t create_if_not_found,
88 DBusError *error)
89{
90 DBusGUID uuid;
91
92 if (filename)
93 {
94 DBusString filename_str;
95 _dbus_string_init_const (&filename_str, filename);
96 if (!_dbus_read_uuid_file (&filename_str, &uuid, create_if_not_found, error))
97 goto error;
98 }
99 else
100 {
101 if (!_dbus_read_local_machine_uuid (&uuid, create_if_not_found, error))
102 goto error;
103 }
104
105 if (!return_uuid(&uuid, uuid_p, error))
106 goto error;
107
108 return TRUE;
109
110 error:
111 _DBUS_ASSERT_ERROR_IS_SET (error);
112 return FALSE;
113}
114
120dbus_bool_t
121_dbus_create_uuid (char **uuid_p,
122 DBusError *error)
123{
124 DBusGUID uuid;
125
126 if (!_dbus_generate_uuid (&uuid, error))
127 return FALSE;
128
129 return return_uuid (&uuid, uuid_p, error);
130}
131
_dbus_generate_uuid
dbus_bool_t _dbus_generate_uuid(DBusGUID *uuid, DBusError *error)
Generates a new UUID.
Definition dbus-internals.c:752
_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_uuid_encode
dbus_bool_t _dbus_uuid_encode(const DBusGUID *uuid, DBusString *encoded)
Hex-encode a UUID.
Definition dbus-internals.c:788
_dbus_create_uuid
dbus_bool_t _dbus_create_uuid(char **uuid_p, DBusError *error)
Definition dbus-uuidgen.c:121
_dbus_get_uuid
dbus_bool_t _dbus_get_uuid(const char *filename, char **uuid_p, dbus_bool_t create_if_not_found, DBusError *error)
For use by the dbus-uuidgen binary ONLY, do not call this.
Definition dbus-uuidgen.c:85
TRUE
#define TRUE
Expands to "1".
Definition dbus-macros.h:41
FALSE
#define FALSE
Expands to "0".
Definition dbus-macros.h:44
_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_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_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_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
DBusError
Object representing an exception.
Definition dbus-errors.h:51
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