D-Bus 1.16.0

dbus-sysdeps-util.c
1/* -*- mode: C; c-file-style: "gnu"; indent-tabs-mode: nil; -*- */
2/* dbus-sysdeps-util.c Tests for dbus-sysdeps.h API
3 *
4 * Copyright 2002-2008 Red Hat, Inc.
5 * Copyright 2003 CodeFactory AB
6 * Copyright 2006 Ralf Habacker
7 * Copyright 2006 Sjoerd Simons
8 * Copyright 2016-2018 Collabora Ltd.
9 *
10 * SPDX-License-Identifier: AFL-2.1 OR GPL-2.0-or-later
11 *
12 * Licensed under the Academic Free License version 2.1
13 *
14 * This program is free software; you can redistribute it and/or modify
15 * it under the terms of the GNU General Public License as published by
16 * the Free Software Foundation; either version 2 of the License, or
17 * (at your option) any later version.
18 *
19 * This program is distributed in the hope that it will be useful,
20 * but WITHOUT ANY WARRANTY; without even the implied warranty of
21 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
22 * GNU General Public License for more details.
23 *
24 * You should have received a copy of the GNU General Public License
25 * along with this program; if not, write to the Free Software
26 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
27 *
28 */
29
30#include <config.h>
31#include "dbus-sysdeps.h"
32#include "dbus-internals.h"
33#include "dbus-string.h"
34
35#include <stdlib.h>
36
37#ifdef DBUS_WIN
38 /* do nothing, it's in stdlib.h */
39#elif (defined __APPLE__)
40# include <crt_externs.h>
41# define environ (*_NSGetEnviron())
42#elif HAVE_DECL_ENVIRON && defined(HAVE_UNISTD_H)
43# include <unistd.h>
44#else
45 extern char **environ;
46#endif
47
54 char **
55_dbus_get_environment (void)
56{
57 int i, length;
58 char **environment;
59
60 _dbus_assert (environ != NULL);
61
62 for (length = 0; environ[length] != NULL; length++);
63
64 /* Add one for NULL */
65 length++;
66
67 environment = dbus_new0 (char *, length);
68
69 if (environment == NULL)
70 return NULL;
71
72 for (i = 0; environ[i] != NULL; i++)
73 {
74 environment[i] = _dbus_strdup (environ[i]);
75
76 if (environment[i] == NULL)
77 break;
78 }
79
80 if (environ[i] != NULL)
81 {
82 dbus_free_string_array (environment);
83 environment = NULL;
84 }
85
86 return environment;
87}
_dbus_assert
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
Definition dbus-internals.h:153
_dbus_strdup
char * _dbus_strdup(const char *str)
Duplicates a string.
Definition dbus-internals.c:621
NULL
#define NULL
A null pointer, defined appropriately for C or C++.
Definition dbus-macros.h:51
dbus_new0
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0().
Definition dbus-memory.h:60
dbus_free_string_array
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
Definition dbus-memory.c:758
_dbus_get_environment
char ** _dbus_get_environment(void)
Gets a NULL-terminated list of key=value pairs from the environment.
Definition dbus-sysdeps-util.c:55