1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
|
/* $Id$ */
/*-
* Copyright (c) 2003-2004 Benedikt Meurer <benny@xfce.org>
* All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2, or (at your option)
* any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02110-1301 USA.
*
* XXX - since this program is executed with root permissions, it may not
* be a good idea to trust glib!!
*/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#ifdef HAVE_SYS_WAIT_H
#include <sys/wait.h>
#endif
#ifdef HAVE_MEMORY_H
#include <memory.h>
#endif
#ifdef HAVE_SIGNAL_H
#include <signal.h>
#endif
#include <stdio.h>
#ifdef HAVE_STDLIB_H
#include <stdlib.h>
#endif
#ifdef HAVE_STRING_H
#include <string.h>
#endif
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "libxfsm/xfsm-shutdown-common.h"
#include <glib.h>
/* XXX */
#define EXIT_CODE_SUCCESS 0
#define EXIT_CODE_FAILED 1
#define EXIT_CODE_ARGUMENTS_INVALID 3
#define EXIT_CODE_INVALID_USER 4
static gboolean
run (const gchar *command)
{
#if defined(HAVE_SIGPROCMASK)
sigset_t sigset;
#endif
gboolean result;
gchar **argv;
gchar **envp;
GError *err = NULL;
gint status;
gint argc;
#if defined(HAVE_SETSID)
setsid ();
#endif
#if defined (HAVE_SIGPROCMASK)
sigemptyset (&sigset);
sigaddset (&sigset, SIGHUP);
sigaddset (&sigset, SIGINT);
sigprocmask (SIG_BLOCK, &sigset, NULL);
#endif
result = g_shell_parse_argv (command, &argc, &argv, &err);
if (result)
{
envp = g_new0 (gchar *, 1);
result = g_spawn_sync (NULL, argv, envp,
G_SPAWN_SEARCH_PATH | G_SPAWN_STDOUT_TO_DEV_NULL |
G_SPAWN_STDERR_TO_DEV_NULL,
NULL, NULL, NULL, NULL, &status, &err);
g_strfreev (envp);
g_strfreev (argv);
}
if (!result)
{
puts (err->message);
g_error_free (err);
return FALSE;
}
return (WIFEXITED (status) && WEXITSTATUS (status) == 0);
}
int
main (int argc, char **argv)
{
GOptionContext *context;
gint uid;
gint euid;
const gchar *pkexec_uid_str;
gboolean shutdown = FALSE;
gboolean restart = FALSE;
gboolean suspend = FALSE;
gboolean hibernate = FALSE;
const GOptionEntry options[] = {
{ "shutdown", '\0', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE, &shutdown, "Shutdown the system", NULL },
{ "restart", '\0', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE, &restart, "Restart the system", NULL },
{ "suspend", '\0', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE, &suspend, "Suspend the system", NULL },
{ "hibernate", '\0', G_OPTION_FLAG_IN_MAIN, G_OPTION_ARG_NONE, &hibernate, "Hibernate the system", NULL },
{ NULL }
};
context = g_option_context_new (NULL);
g_option_context_set_summary (context, "XFCE Session Helper");
g_option_context_add_main_entries (context, options, NULL);
g_option_context_parse (context, &argc, &argv, NULL);
g_option_context_free (context);
/* no input */
if (!shutdown && !restart && !suspend && !hibernate)
{
puts ("No valid option was specified");
return EXIT_CODE_ARGUMENTS_INVALID;
}
/* get calling process */
uid = getuid ();
euid = geteuid ();
if (uid != 0 || euid != 0)
{
puts ("This program can only be used by the root user");
return EXIT_CODE_ARGUMENTS_INVALID;
}
/* check we're not being spoofed */
pkexec_uid_str = g_getenv ("PKEXEC_UID");
if (pkexec_uid_str == NULL)
{
puts ("This program must only be run through pkexec");
return EXIT_CODE_INVALID_USER;
}
/* run the command */
if(shutdown)
{
if (run (POWEROFF_CMD))
{
return EXIT_CODE_SUCCESS;
}
else
{
return EXIT_CODE_FAILED;
}
}
else if(restart)
{
if (run (REBOOT_CMD))
{
return EXIT_CODE_SUCCESS;
}
else
{
return EXIT_CODE_FAILED;
}
}
else if(suspend)
{
if (run (UP_BACKEND_SUSPEND_COMMAND))
{
return EXIT_CODE_SUCCESS;
}
else
{
return EXIT_CODE_FAILED;
}
}
else if(hibernate)
{
if (run (UP_BACKEND_HIBERNATE_COMMAND))
{
return EXIT_CODE_SUCCESS;
}
else
{
return EXIT_CODE_FAILED;
}
}
/* how did we get here? */
return EXIT_CODE_FAILED;
}
|
