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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*
73 dbus_get_local_machine_id (void)
74 {
75 DBusString uuid;
76 char *s;
77
78 s = NULL;
79
80 if (!_dbus_string_init (&uuid))
81 return NULL;
82
83 if (!_dbus_get_local_machine_uuid_encoded (&uuid) ||
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_ENABLE_EMBEDDED_TESTS
177
178 #ifndef DOXYGEN_SHOULD_SKIP_THIS
179
180 #include "dbus-test.h"
181 #include <stdlib.h>
182
183
184 dbus_bool_t
185 _dbus_misc_test (void)
186 {
187 int major, minor, micro;
188 DBusString str;
189
190 /* make sure we don't crash on NULL */
191 dbus_get_version (NULL, NULL, 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
239 _dbus_assert (_dbus_string_equal_c_str (&str, DBUS_VERSION_STRING));
240
241 _dbus_string_free (&str);
242
243 return TRUE;
244 }
245
246 #endif /* !DOXYGEN_SHOULD_SKIP_THIS */
247
248 #endif
NULL
#define NULL
A null pointer, defined appropriately for C or C++.
_dbus_string_append_int
dbus_bool_t _dbus_string_append_int(DBusString *str, long value)
Appends an integer to a DBusString.
Definition: dbus-sysdeps.c:354
_dbus_assert
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
Definition: dbus-internals.h:135
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:161
_dbus_string_init
dbus_bool_t _dbus_string_init(DBusString *str)
Initializes a string.
Definition: dbus-string.c:175
_dbus_get_local_machine_uuid_encoded
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.
Definition: dbus-internals.c:854
_dbus_string_equal_c_str
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:2134
DBusString
Definition: dbus-string.h:42
dbus_bool_t
dbus_uint32_t dbus_bool_t
A boolean, valid values are TRUE and FALSE.
Definition: dbus-types.h:35
_dbus_string_append_byte
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:1139
_dbus_string_free
void _dbus_string_free(DBusString *str)
Frees a string created by _dbus_string_init().
Definition: dbus-string.c:242
TRUE
#define TRUE
Expands to "1".
_dbus_assert_not_reached
#define _dbus_assert_not_reached(explanation)
Aborts with an error message if called.
Definition: dbus-internals.h:145
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:73
_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:624