D-Bus  1.13.16
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  * Licensed under the Academic Free License version 2.1
11  *
12  * This program is free software; you can redistribute it and/or modify
13  * it under the terms of the GNU General Public License as published by
14  * the Free Software Foundation; either version 2 of the License, or
15  * (at your option) any later version.
16  *
17  * This program is distributed in the hope that it will be useful,
18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20  * GNU General Public License for more details.
21  *
22  * You should have received a copy of the GNU General Public License
23  * along with this program; if not, write to the Free Software
24  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
25  *
26  */
27 
28 #include <config.h>
29 #include "dbus-sysdeps.h"
30 #include "dbus-internals.h"
31 #include "dbus-string.h"
32 
33 #include <stdlib.h>
34 
35 #ifdef DBUS_WIN
36  /* do nothing, it's in stdlib.h */
37 #elif (defined __APPLE__)
38 # include <crt_externs.h>
39 # define environ (*_NSGetEnviron())
40 #elif HAVE_DECL_ENVIRON && defined(HAVE_UNISTD_H)
41 # include <unistd.h>
42 #else
43 extern char **environ;
44 #endif
45 
52 char **
54 {
55  int i, length;
56  char **environment;
57 
58  _dbus_assert (environ != NULL);
59 
60  for (length = 0; environ[length] != NULL; length++);
61 
62  /* Add one for NULL */
63  length++;
64 
65  environment = dbus_new0 (char *, length);
66 
67  if (environment == NULL)
68  return NULL;
69 
70  for (i = 0; environ[i] != NULL; i++)
71  {
72  environment[i] = _dbus_strdup (environ[i]);
73 
74  if (environment[i] == NULL)
75  break;
76  }
77 
78  if (environ[i] != NULL)
79  {
80  dbus_free_string_array (environment);
81  environment = NULL;
82  }
83 
84  return environment;
85 }
_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:53
_dbus_assert
#define _dbus_assert(condition)
Definition: dbus-internals.h:153
_dbus_strdup
char * _dbus_strdup(const char *str)
Duplicates a string.
Definition: dbus-internals.c:589
dbus_free_string_array
void dbus_free_string_array(char **str_array)
Frees a NULL-terminated array of strings.
Definition: dbus-memory.c:752
dbus_new0
#define dbus_new0(type, count)
Definition: dbus-memory.h:58
NULL
#define NULL