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
|
/*
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 of the License, 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., 675 Mass Ave, Cambridge, MA 02139, USA.
xrdp: A Remote Desktop Protocol server.
Copyright (C) Jay Sorg 2005-2010
*/
/**
*
* @file sessvc.c
* @brief Session supervisor
* @author Simone Fedele
*
*/
#if defined(HAVE_CONFIG_H)
#include "config_ac.h"
#endif
#include "file_loc.h"
#include "os_calls.h"
#include "arch.h"
static int g_term = 0;
/*****************************************************************************/
void DEFAULT_CC
term_signal_handler(int sig)
{
g_writeln("xrdp-sessvc: term_signal_handler: got signal %d", sig);
g_term = 1;
}
/*****************************************************************************/
void DEFAULT_CC
nil_signal_handler(int sig)
{
g_writeln("xrdp-sessvc: nil_signal_handler: got signal %d", sig);
}
/******************************************************************************/
/* chansrv can exit at any time without cleaning up, its an xlib app */
int APP_CC
chansrv_cleanup(int pid)
{
char text[256];
g_snprintf(text, 255, "/tmp/xrdp_chansrv_%8.8x_main_term", pid);
if (g_file_exist(text))
{
g_file_delete(text);
}
g_snprintf(text, 255, "/tmp/xrdp_chansrv_%8.8x_thread_done", pid);
if (g_file_exist(text))
{
g_file_delete(text);
}
return 0;
}
/******************************************************************************/
int DEFAULT_CC
main(int argc, char** argv)
{
int ret = 0;
int chansrv_pid = 0;
int wm_pid = 0;
int x_pid = 0;
int lerror = 0;
char exe_path[262];
g_memset(exe_path,0,sizeof(exe_path));
if (argc < 3)
{
g_writeln("xrdp-sessvc: exiting, not enough parameters");
return 1;
}
g_signal_kill(term_signal_handler); /* SIGKILL */
g_signal_terminate(term_signal_handler); /* SIGTERM */
g_signal_user_interrupt(term_signal_handler); /* SIGINT */
g_signal_pipe(nil_signal_handler); /* SIGPIPE */
x_pid = g_atoi(argv[1]);
wm_pid = g_atoi(argv[2]);
g_writeln("xrdp-sessvc: waiting for X (pid %d) and WM (pid %d)",
x_pid, wm_pid);
/* run xrdp-chansrv as a seperate process */
chansrv_pid = g_fork();
if (chansrv_pid == -1)
{
g_writeln("xrdp-sessvc: fork error");
return 1;
}
else if (chansrv_pid == 0) /* child */
{
g_set_current_dir(XRDP_SBIN_PATH);
g_snprintf(exe_path, 261, "%s/xrdp-chansrv", XRDP_SBIN_PATH);
g_execlp3(exe_path, "xrdp-chansrv", 0);
/* should not get here */
g_writeln("xrdp-sessvc: g_execlp3() failed");
return 1;
}
lerror = 0;
/* wait for window manager to get done */
ret = g_waitpid(wm_pid);
while ((ret == 0) && !g_term)
{
ret = g_waitpid(wm_pid);
g_sleep(1);
}
if (ret < 0)
{
lerror = g_get_errno();
}
g_writeln("xrdp-sessvc: WM is dead (waitpid said %d, errno is %d) "
"exiting...", ret, lerror);
/* kill channel server */
g_writeln("xrdp-sessvc: stopping channel server");
g_sigterm(chansrv_pid);
ret = g_waitpid(chansrv_pid);
while ((ret == 0) && !g_term)
{
ret = g_waitpid(chansrv_pid);
g_sleep(1);
}
chansrv_cleanup(chansrv_pid);
/* kill X server */
g_writeln("xrdp-sessvc: stopping X server");
g_sigterm(x_pid);
ret = g_waitpid(x_pid);
while ((ret == 0) && !g_term)
{
ret = g_waitpid(x_pid);
g_sleep(1);
}
g_writeln("xrdp-sessvc: clean exit");
return 0;
}
|
