D-Bus  1.6.12
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 
72 char*
74 {
75  DBusString uuid;
76  char *s;
77 
78  s = NULL;
79 
80  if (!_dbus_string_init (&uuid))
81  return NULL;
82 
84  !_dbus_string_steal_data (&uuid, &s))
85  {
86  _dbus_string_free (&uuid);
87  return NULL;
88  }
89  else
90  {
91  _dbus_string_free (&uuid);
92  return s;
93  }
94 
95 }
96 
160 void
161 dbus_get_version (int *major_version_p,
162  int *minor_version_p,
163  int *micro_version_p)
164 {
165  if (major_version_p)
166  *major_version_p = DBUS_MAJOR_VERSION;
167  if (minor_version_p)
168  *minor_version_p = DBUS_MINOR_VERSION;
169  if (micro_version_p)
170  *micro_version_p = DBUS_MICRO_VERSION;
171 }
172 
173  /* End of public API */
175 
176 #ifdef DBUS_BUILD_TESTS
177 
178 #ifndef DOXYGEN_SHOULD_SKIP_THIS
179 
180 #include "dbus-test.h"
181 #include <stdlib.h>
182 
183 
185 _dbus_misc_test (void)
186 {
187  int major, minor, micro;
188  DBusString str;
189 
190  /* make sure we don't crash on NULL */
192 
193  /* Now verify that all the compile-time version stuff
194  * is right and matches the runtime. These tests
195  * are mostly intended to catch various kinds of
196  * typo (mixing up major and minor, that sort of thing).
197  */
198  dbus_get_version (&major, &minor, &micro);
199 
200  _dbus_assert (major == DBUS_MAJOR_VERSION);
201  _dbus_assert (minor == DBUS_MINOR_VERSION);
202  _dbus_assert (micro == DBUS_MICRO_VERSION);
203 
204 #define MAKE_VERSION(x, y, z) (((x) << 16) | ((y) << 8) | (z))
205 
206  /* check that MAKE_VERSION works and produces the intended ordering */
207  _dbus_assert (MAKE_VERSION (1, 0, 0) > MAKE_VERSION (0, 0, 0));
208  _dbus_assert (MAKE_VERSION (1, 1, 0) > MAKE_VERSION (1, 0, 0));
209  _dbus_assert (MAKE_VERSION (1, 1, 1) > MAKE_VERSION (1, 1, 0));
210 
211  _dbus_assert (MAKE_VERSION (2, 0, 0) > MAKE_VERSION (1, 1, 1));
212  _dbus_assert (MAKE_VERSION (2, 1, 0) > MAKE_VERSION (1, 1, 1));
213  _dbus_assert (MAKE_VERSION (2, 1, 1) > MAKE_VERSION (1, 1, 1));
214 
215  /* check DBUS_VERSION */
216  _dbus_assert (MAKE_VERSION (major, minor, micro) == DBUS_VERSION);
217 
218  /* check that ordering works with DBUS_VERSION */
219  _dbus_assert (MAKE_VERSION (major - 1, minor, micro) < DBUS_VERSION);
220  _dbus_assert (MAKE_VERSION (major, minor - 1, micro) < DBUS_VERSION);
221  _dbus_assert (MAKE_VERSION (major, minor, micro - 1) < DBUS_VERSION);
222 
223  _dbus_assert (MAKE_VERSION (major + 1, minor, micro) > DBUS_VERSION);
224  _dbus_assert (MAKE_VERSION (major, minor + 1, micro) > DBUS_VERSION);
225  _dbus_assert (MAKE_VERSION (major, minor, micro + 1) > DBUS_VERSION);
226 
227  /* Check DBUS_VERSION_STRING */
228 
229  if (!_dbus_string_init (&str))
230  _dbus_assert_not_reached ("no memory");
231 
232  if (!(_dbus_string_append_int (&str, major) &&
233  _dbus_string_append_byte (&str, '.') &&
234  _dbus_string_append_int (&str, minor) &&
235  _dbus_string_append_byte (&str, '.') &&
236  _dbus_string_append_int (&str, micro)))
237  _dbus_assert_not_reached ("no memory");
238 
240 
241  _dbus_string_free (&str);
242 
243  return TRUE;
244 }
245 
246 #endif /* !DOXYGEN_SHOULD_SKIP_THIS */
247 
248 #endif
#define NULL
A null pointer, defined appropriately for C or C++.
dbus_bool_t _dbus_string_append_int(DBusString *str, long value)
Appends an integer to a DBusString.
Definition: dbus-sysdeps.c:352
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
#define DBUS_MAJOR_VERSION
The COMPILE TIME major version of libdbus, that is, the &quot;X&quot; in &quot;X.Y.Z&quot;, as an integer literal...
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:161
#define DBUS_MICRO_VERSION
The COMPILE TIME micro version of libdbus, that is, the &quot;Z&quot; in &quot;X.Y.Z&quot;, as an integer literal...
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition: dbus-string.c:175
dbus_bool_t _dbus_get_local_machine_uuid_encoded(DBusString *uuid_str)
Gets the hex-encoded UUID of the machine this function is executed on.
#define DBUS_VERSION_STRING
The COMPILE TIME version of libdbus, as a string &quot;X.Y.Z&quot;.
dbus_bool_t _dbus_string_equal_c_str(const DBusString *a, const char *c_str)
Checks whether a string is equal to a C string.
Definition: dbus-string.c:2149
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition: dbus-types.h:35
#define DBUS_MINOR_VERSION
The COMPILE TIME minor version of libdbus, that is, the &quot;Y&quot; in &quot;X.Y.Z&quot;, as an integer literal...
dbus_bool_t _dbus_string_append_byte(DBusString *str, unsigned char byte)
Appends a single byte to the string, returning FALSE if not enough memory.
Definition: dbus-string.c:1154
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init().
Definition: dbus-string.c:242
#define TRUE
Expands to &quot;1&quot;.
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
#define DBUS_VERSION
The COMPILE TIME version of libdbus, as a single integer that has 0 in the most significant byte...
char * dbus_get_local_machine_id(void)
Obtains the machine UUID of the machine this process is running on.
Definition: dbus-misc.c:73
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:619