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
|
/**
* @file
* @section AUTHORS
*
* Authors:
* Eamon Walsh <ewalsh@tycho.nsa.gov>
*
* @section LICENSE
*
* This file is in the public domain.
*
* @section DESCRIPTION
*
* This is an optional part of linpicker-server that enables a debugging
* interface over a local socket if the "enable-socket" configure-time option
* is set (default: disabled).
*
* Currently this interface is for debugging (for example dumping the current
* list of views), however this interface might find use in the future as a
* way to control Linpicker programmatically. For example commands could be
* implemented to list the current guests and switch between them, display a
* notification icon, etc.
*/
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <unistd.h>
#include <errno.h>
#include "config.h"
#include "local.h"
#include "fd.h"
#include "view.h"
#include "sak.h"
#ifdef LOCALSOCK
static int sd;
static void
local_dump_views(void)
{
view_debug_dump();
}
static void
local_set_sak(struct local_message *msg)
{
struct buffer *b;
b = buffer_lookup(msg->param1, 0);
if (b)
sak_register(msg->param2, b->bg_view->display);
}
static void
local_process(void *closure)
{
struct local_message msg;
int rc;
rc = recv(sd, &msg, sizeof(msg), MSG_DONTWAIT);
if (rc < 0) {
if (errno == EAGAIN || errno == EINTR)
return;
FD_LOG(0, "recv() failed: %m\n");
return;
}
else if (rc == sizeof(msg)) {
switch (msg.type) {
case LINPICKER_LOCAL_DUMP_VIEWS:
local_dump_views();
break;
case LINPICKER_LOCAL_SET_SAK:
local_set_sak(&msg);
break;
default:
break;
}
}
else
FD_LOG(1, "Warning: partial local_message dropped\n");
}
int
local_init(int argc, char **argv)
{
struct sockaddr_un addr;
int rc;
/* Listen on a local socket */
sd = socket(AF_UNIX, SOCK_DGRAM, 0);
if (sd < 0) {
FD_LOG(0, "socket() failed: %m\n");
return -1;
}
memset(&addr, 0, sizeof(addr));
addr.sun_family = AF_UNIX;
memcpy(addr.sun_path, LINPICKER_SOCKNAME, sizeof(LINPICKER_SOCKNAME));
rc = bind(sd, (struct sockaddr *)&addr, sizeof(addr));
if (rc < 0) {
FD_LOG(0, "bind() failed: %m\n");
return -1;
}
return fd_set_handler(sd, local_process, NULL);
}
#else
int
local_init(int argc, char **argv)
{
return 0;
}
#endif
|
