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
|
/* $Id$ */
/***
This file is part of PulseAudio.
PulseAudio is free software; you can redistribute it and/or modify
it under the terms of the GNU Lesser General Public License as published
by the Free Software Foundation; either version 2 of the License,
or (at your option) any later version.
PulseAudio 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 Lesser General Public License
along with PulseAudio; if not, write to the Free Software
Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
USA.
***/
#ifdef HAVE_CONFIG_H
#include <config.h>
#endif
#include <stdio.h>
#include <assert.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <X11/Xlib.h>
#include <X11/Xatom.h>
#include <pulse/util.h>
#include <pulse/xmalloc.h>
#include <pulsecore/module.h>
#include <pulsecore/sink.h>
#include <pulsecore/core-scache.h>
#include <pulsecore/modargs.h>
#include <pulsecore/namereg.h>
#include <pulsecore/log.h>
#include <pulsecore/x11wrap.h>
#include <pulsecore/core-util.h>
#include <pulsecore/native-common.h>
#include <pulsecore/authkey-prop.h>
#include <pulsecore/authkey.h>
#include <pulsecore/x11prop.h>
#include <pulsecore/strlist.h>
#include <pulsecore/props.h>
#include "module-x11-publish-symdef.h"
PA_MODULE_AUTHOR("Lennart Poettering")
PA_MODULE_DESCRIPTION("X11 Credential Publisher")
PA_MODULE_VERSION(PACKAGE_VERSION)
PA_MODULE_USAGE("display=<X11 display>")
static const char* const valid_modargs[] = {
"display",
"sink",
"source",
"cookie",
NULL
};
struct userdata {
pa_core *core;
pa_x11_wrapper *x11_wrapper;
char *id;
uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH];
int auth_cookie_in_property;
};
static int load_key(struct userdata *u, const char*fn) {
assert(u);
u->auth_cookie_in_property = 0;
if (!fn && pa_authkey_prop_get(u->core, PA_NATIVE_COOKIE_PROPERTY_NAME, u->auth_cookie, sizeof(u->auth_cookie)) >= 0) {
pa_log_debug(__FILE__": using already loaded auth cookie.");
pa_authkey_prop_ref(u->core, PA_NATIVE_COOKIE_PROPERTY_NAME);
u->auth_cookie_in_property = 1;
return 0;
}
if (!fn)
fn = PA_NATIVE_COOKIE_FILE;
if (pa_authkey_load_auto(fn, u->auth_cookie, sizeof(u->auth_cookie)) < 0)
return -1;
pa_log_debug(__FILE__": loading cookie from disk.");
if (pa_authkey_prop_put(u->core, PA_NATIVE_COOKIE_PROPERTY_NAME, u->auth_cookie, sizeof(u->auth_cookie)) >= 0)
u->auth_cookie_in_property = 1;
return 0;
}
int pa__init(pa_core *c, pa_module*m) {
struct userdata *u;
pa_modargs *ma = NULL;
char hn[256], un[128];
char hx[PA_NATIVE_COOKIE_LENGTH*2+1];
const char *t;
char *s;
pa_strlist *l;
if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
pa_log(__FILE__": failed to parse module arguments");
goto fail;
}
m->userdata = u = pa_xmalloc(sizeof(struct userdata));
u->core = c;
u->id = NULL;
u->auth_cookie_in_property = 0;
if (load_key(u, pa_modargs_get_value(ma, "cookie", NULL)) < 0)
goto fail;
if (!(u->x11_wrapper = pa_x11_wrapper_get(c, pa_modargs_get_value(ma, "display", NULL))))
goto fail;
if (!(l = pa_property_get(c, PA_NATIVE_SERVER_PROPERTY_NAME)))
goto fail;
s = pa_strlist_tostring(l);
pa_x11_set_prop(pa_x11_wrapper_get_display(u->x11_wrapper), "PULSE_SERVER", s);
pa_xfree(s);
if (!pa_get_fqdn(hn, sizeof(hn)) || !pa_get_user_name(un, sizeof(un)))
goto fail;
u->id = pa_sprintf_malloc("%s@%s/%u", un, hn, (unsigned) getpid());
pa_x11_set_prop(pa_x11_wrapper_get_display(u->x11_wrapper), "PULSE_ID", u->id);
if ((t = pa_modargs_get_value(ma, "source", NULL)))
pa_x11_set_prop(pa_x11_wrapper_get_display(u->x11_wrapper), "PULSE_SOURCE", t);
if ((t = pa_modargs_get_value(ma, "sink", NULL)))
pa_x11_set_prop(pa_x11_wrapper_get_display(u->x11_wrapper), "PULSE_SINK", t);
pa_x11_set_prop(pa_x11_wrapper_get_display(u->x11_wrapper), "PULSE_COOKIE", pa_hexstr(u->auth_cookie, sizeof(u->auth_cookie), hx, sizeof(hx)));
pa_modargs_free(ma);
return 0;
fail:
if (ma)
pa_modargs_free(ma);
pa__done(c, m);
return -1;
}
void pa__done(pa_core *c, pa_module*m) {
struct userdata*u;
assert(c && m);
if (!(u = m->userdata))
return;
if (u->x11_wrapper) {
char t[256];
/* Yes, here is a race condition */
if (!pa_x11_get_prop(pa_x11_wrapper_get_display(u->x11_wrapper), "PULSE_ID", t, sizeof(t)) || strcmp(t, u->id))
pa_log_warn(__FILE__": PulseAudio information vanished from X11!");
else {
pa_x11_del_prop(pa_x11_wrapper_get_display(u->x11_wrapper), "PULSE_ID");
pa_x11_del_prop(pa_x11_wrapper_get_display(u->x11_wrapper), "PULSE_SERVER");
pa_x11_del_prop(pa_x11_wrapper_get_display(u->x11_wrapper), "PULSE_SINK");
pa_x11_del_prop(pa_x11_wrapper_get_display(u->x11_wrapper), "PULSE_SOURCE");
pa_x11_del_prop(pa_x11_wrapper_get_display(u->x11_wrapper), "PULSE_COOKIE");
XSync(pa_x11_wrapper_get_display(u->x11_wrapper), False);
}
}
if (u->x11_wrapper)
pa_x11_wrapper_unref(u->x11_wrapper);
if (u->auth_cookie_in_property)
pa_authkey_prop_unref(c, PA_NATIVE_COOKIE_PROPERTY_NAME);
pa_xfree(u->id);
pa_xfree(u);
}
|
