D-Bus  1.16.2
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 **
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 }
#define NULL
A null pointer, defined appropriately for C or C++.
#define dbus_new0(type, count)
Safe macro for using dbus_malloc0().
Definition: dbus-memory.h:60
#define _dbus_assert(condition)
Aborts with an error message if the condition is false.
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
Definition: dbus-memory.c:758
char ** _dbus_get_environment(void)
Gets a NULL-terminated list of key=value pairs from the environment.
char * _dbus_strdup(const char *str)
Duplicates a string.