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
44static dbus_bool_t
45return_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 */
82dbus_bool_t
83dbus_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 */
121dbus_bool_t
122dbus_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