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 * 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 #include <config.h>
24 #include "dbus-uuidgen.h"
25 #include "dbus-internals.h"
26 #include "dbus-string.h"
27 #include "dbus-protocol.h"
28
29 #ifdef DBUS_WIN
30 #error "dbus-uuidgen should not be needed on Windows"
31 #endif
32
33 /**
34 * @defgroup DBusInternalsUuidgen dbus-uuidgen implementation
35 * @ingroup DBusInternals
36 * @brief Functions for dbus-uuidgen binary
37 *
38 * These are not considered part of the ABI, and if you call them
39 * you will get screwed by future changes.
40 *
41 * @{
42 */
43
44 static dbus_bool_t
return_uuid(DBusGUID * uuid,char ** uuid_p,DBusError * error)45 return_uuid (DBusGUID *uuid,
46 char **uuid_p,
47 DBusError *error)
48 {
49 if (uuid_p)
50 {
51 DBusString encoded;
52
53 if (!_dbus_string_init (&encoded))
54 {
55 _DBUS_SET_OOM (error);
56 return FALSE;
57 }
58
59 if (!_dbus_uuid_encode (uuid, &encoded) ||
60 !_dbus_string_steal_data (&encoded, uuid_p))
61 {
62 _DBUS_SET_OOM (error);
63 _dbus_string_free (&encoded);
64 return FALSE;
65 }
66 _dbus_string_free (&encoded);
67 }
68 return TRUE;
69 }
70
71 /**
72 * For use by the dbus-uuidgen binary ONLY, do not call this.
73 * We can and will change this function without modifying
74 * the libdbus soname.
75 *
76 * @param filename the file or #NULL for the machine ID file
77 * @param uuid_p out param to return the uuid
78 * @param create_if_not_found whether to create it if not already there
79 * @param error error return
80 * @returns #FALSE if error is set
81 */
82 dbus_bool_t
dbus_internal_do_not_use_get_uuid(const char * filename,char ** uuid_p,dbus_bool_t create_if_not_found,DBusError * error)83 dbus_internal_do_not_use_get_uuid (const char *filename,
84 char **uuid_p,
85 dbus_bool_t create_if_not_found,
86 DBusError *error)
87 {
88 DBusGUID uuid;
89
90 if (filename)
91 {
92 DBusString filename_str;
93 _dbus_string_init_const (&filename_str, filename);
94 if (!_dbus_read_uuid_file (&filename_str, &uuid, create_if_not_found, error))
95 goto error;
96 }
97 else
98 {
99 if (!_dbus_read_local_machine_uuid (&uuid, create_if_not_found, error))
100 goto error;
101 }
102
103 if (!return_uuid(&uuid, uuid_p, error))
104 goto error;
105
106 return TRUE;
107
108 error:
109 _DBUS_ASSERT_ERROR_IS_SET (error);
110 return FALSE;
111 }
112
113 /**
114 * For use by the dbus-uuidgen binary ONLY, do not call this.
115 * We can and will change this function without modifying
116 * the libdbus soname.
117 *
118 * @param uuid_p out param to return the uuid
119 * @returns #FALSE if no memory
120 */
121 dbus_bool_t
dbus_internal_do_not_use_create_uuid(char ** uuid_p)122 dbus_internal_do_not_use_create_uuid (char **uuid_p)
123 {
124 DBusGUID uuid;
125
126 _dbus_generate_uuid (&uuid);
127 return return_uuid (&uuid, uuid_p, NULL);
128 }
129
130 /** @} */
131