2 This file is part of PulseAudio.
4 Copyright 2004-2006 Lennart Poettering
6 PulseAudio is free software; you can redistribute it and/or modify
7 it under the terms of the GNU Lesser General Public License as published
8 by the Free Software Foundation; either version 2.1 of the License,
9 or (at your option) any later version.
11 PulseAudio is distributed in the hope that it will be useful, but
12 WITHOUT ANY WARRANTY; without even the implied warranty of
13 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 General Public License for more details.
16 You should have received a copy of the GNU Lesser General Public License
17 along with PulseAudio; if not, write to the Free Software
18 Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
33 #include <pulse/xmalloc.h>
35 #include <pulsecore/module.h>
36 #include <pulsecore/modargs.h>
37 #include <pulsecore/log.h>
38 #include <pulsecore/x11wrap.h>
39 #include <pulsecore/core-util.h>
40 #include <pulsecore/native-common.h>
41 #include <pulsecore/auth-cookie.h>
42 #include <pulsecore/x11prop.h>
43 #include <pulsecore/strlist.h>
44 #include <pulsecore/protocol-native.h>
46 #include "module-x11-publish-symdef.h"
48 PA_MODULE_AUTHOR("Lennart Poettering");
49 PA_MODULE_DESCRIPTION("X11 credential publisher");
50 PA_MODULE_VERSION(PACKAGE_VERSION);
51 PA_MODULE_LOAD_ONCE(FALSE);
53 "display=<X11 display> "
54 "sink=<Sink to publish> "
55 "source=<Source to publish> "
56 "cookie=<Cookie file to publish> ");
58 static const char* const valid_modargs[] = {
69 pa_native_protocol *protocol;
72 pa_auth_cookie *auth_cookie;
74 pa_x11_wrapper *x11_wrapper;
75 pa_x11_client *x11_client;
77 pa_hook_slot *hook_slot;
80 static void publish_servers(struct userdata *u, pa_strlist *l) {
82 int screen = DefaultScreen(pa_x11_wrapper_get_display(u->x11_wrapper));
87 l = pa_strlist_reverse(l);
88 s = pa_strlist_tostring(l);
89 pa_strlist_reverse(l);
91 pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SERVER", s);
94 pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SERVER");
97 static pa_hook_result_t servers_changed_cb(void *hook_data, void *call_data, void *slot_data) {
98 pa_strlist *servers = call_data;
99 struct userdata *u = slot_data;
105 screen = DefaultScreen(pa_x11_wrapper_get_display(u->x11_wrapper));
106 if (!pa_x11_get_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_ID", t, sizeof(t)) || strcmp(t, u->id)) {
107 pa_log_warn("PulseAudio information vanished from X11!");
111 publish_servers(u, servers);
115 static void x11_kill_cb(pa_x11_wrapper *w, void *userdata) {
116 struct userdata *u = userdata;
120 pa_assert(u->x11_wrapper == w);
123 pa_x11_client_free(u->x11_client);
126 pa_x11_wrapper_unref(u->x11_wrapper);
128 u->x11_client = NULL;
129 u->x11_wrapper = NULL;
131 pa_module_unload_request(u->module, TRUE);
134 int pa__init(pa_module*m) {
136 pa_modargs *ma = NULL;
138 char hx[PA_NATIVE_COOKIE_LENGTH*2+1];
144 if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
145 pa_log("failed to parse module arguments");
149 m->userdata = u = pa_xnew(struct userdata, 1);
152 u->protocol = pa_native_protocol_get(m->core);
154 u->auth_cookie = NULL;
155 u->x11_client = NULL;
156 u->x11_wrapper = NULL;
158 u->hook_slot = pa_hook_connect(&pa_native_protocol_hooks(u->protocol)[PA_NATIVE_HOOK_SERVERS_CHANGED], PA_HOOK_NORMAL, servers_changed_cb, u);
160 if (!(u->auth_cookie = pa_auth_cookie_get(m->core, pa_modargs_get_value(ma, "cookie", PA_NATIVE_COOKIE_FILE), PA_NATIVE_COOKIE_LENGTH)))
163 if (!(u->x11_wrapper = pa_x11_wrapper_get(m->core, pa_modargs_get_value(ma, "display", NULL))))
166 screen = DefaultScreen(pa_x11_wrapper_get_display(u->x11_wrapper));
167 mid = pa_machine_id();
168 u->id = pa_sprintf_malloc("%lu@%s/%lu", (unsigned long) getuid(), mid, (unsigned long) getpid());
171 pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_ID", u->id);
173 if ((sid = pa_session_id())) {
174 pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SESSION_ID", sid);
178 publish_servers(u, pa_native_protocol_servers(u->protocol));
180 if ((t = pa_modargs_get_value(ma, "source", NULL)))
181 pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SOURCE", t);
183 if ((t = pa_modargs_get_value(ma, "sink", NULL)))
184 pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SINK", t);
186 pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_COOKIE",
187 pa_hexstr(pa_auth_cookie_read(u->auth_cookie, PA_NATIVE_COOKIE_LENGTH), PA_NATIVE_COOKIE_LENGTH, hx, sizeof(hx)));
189 u->x11_client = pa_x11_client_new(u->x11_wrapper, NULL, x11_kill_cb, u);
204 void pa__done(pa_module*m) {
209 if (!(u = m->userdata))
213 pa_x11_client_free(u->x11_client);
215 if (u->x11_wrapper) {
217 int screen = DefaultScreen(pa_x11_wrapper_get_display(u->x11_wrapper));
219 /* Yes, here is a race condition */
220 if (!pa_x11_get_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_ID", t, sizeof(t)) || strcmp(t, u->id))
221 pa_log_warn("PulseAudio information vanished from X11!");
223 pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_ID");
224 pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SERVER");
225 pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SINK");
226 pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SOURCE");
227 pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_COOKIE");
228 pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SESSION_ID");
229 xcb_flush(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper));
232 pa_x11_wrapper_unref(u->x11_wrapper);
236 pa_auth_cookie_unref(u->auth_cookie);
239 pa_hook_slot_free(u->hook_slot);
242 pa_native_protocol_unref(u->protocol);