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-rw-r--r--src/modules/module-x11-publish.c228
1 files changed, 228 insertions, 0 deletions
diff --git a/src/modules/module-x11-publish.c b/src/modules/module-x11-publish.c
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--- /dev/null
+++ b/src/modules/module-x11-publish.c
@@ -0,0 +1,228 @@
+/***
+ This file is part of PulseAudio.
+
+ Copyright 2004-2006 Lennart Poettering
+
+ 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 <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_LOAD_ONCE(FALSE);
+PA_MODULE_USAGE("display=<X11 display>");
+
+static const char* const valid_modargs[] = {
+ "display",
+ "sink",
+ "source",
+ "cookie",
+ NULL
+};
+
+struct userdata {
+ pa_core *core;
+ pa_module *module;
+
+ char *id;
+ uint8_t auth_cookie[PA_NATIVE_COOKIE_LENGTH];
+ pa_bool_t auth_cookie_in_property;
+
+ pa_x11_wrapper *x11_wrapper;
+ pa_x11_client *x11_client;
+};
+
+static void x11_kill_cb(pa_x11_wrapper *w, void *userdata) {
+ struct userdata *u = userdata;
+
+ pa_assert(w);
+ pa_assert(u);
+ pa_assert(u->x11_wrapper == w);
+
+ if (u->x11_client)
+ pa_x11_client_free(u->x11_client);
+
+ if (u->x11_wrapper)
+ pa_x11_wrapper_unref(u->x11_wrapper);
+
+ u->x11_client = NULL;
+ u->x11_wrapper = NULL;
+
+ pa_module_unload_request(u->module);
+}
+
+static int load_key(struct userdata *u, const char*fn) {
+ pa_assert(u);
+
+ u->auth_cookie_in_property = FALSE;
+
+ if (!fn && pa_authkey_prop_get(u->core, PA_NATIVE_COOKIE_PROPERTY_NAME, u->auth_cookie, sizeof(u->auth_cookie)) >= 0) {
+ pa_log_debug("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("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 = TRUE;
+
+ return 0;
+}
+
+int pa__init(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;
+
+ pa_assert(m);
+
+ if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
+ pa_log("failed to parse module arguments");
+ goto fail;
+ }
+
+ m->userdata = u = pa_xnew(struct userdata, 1);
+ u->core = m->core;
+ u->module = m;
+ u->id = NULL;
+ u->auth_cookie_in_property = FALSE;
+ u->x11_client = NULL;
+ u->x11_wrapper = NULL;
+
+ if (load_key(u, pa_modargs_get_value(ma, "cookie", NULL)) < 0)
+ goto fail;
+
+ if (!(u->x11_wrapper = pa_x11_wrapper_get(m->core, pa_modargs_get_value(ma, "display", NULL))))
+ goto fail;
+
+ if (!(l = pa_property_get(m->core, PA_NATIVE_SERVER_PROPERTY_NAME)))
+ goto fail;
+
+ l = pa_strlist_reverse(l);
+ s = pa_strlist_tostring(l);
+ l = pa_strlist_reverse(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)));
+
+ u->x11_client = pa_x11_client_new(u->x11_wrapper, NULL, x11_kill_cb, u);
+
+ pa_modargs_free(ma);
+
+ return 0;
+
+fail:
+ if (ma)
+ pa_modargs_free(ma);
+
+ pa__done(m);
+
+ return -1;
+}
+
+void pa__done(pa_module*m) {
+ struct userdata*u;
+
+ pa_assert(m);
+
+ if (!(u = m->userdata))
+ return;
+
+ if (u->x11_client)
+ pa_x11_client_free(u->x11_client);
+
+ 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("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);
+ }
+
+ pa_x11_wrapper_unref(u->x11_wrapper);
+ }
+
+ if (u->auth_cookie_in_property)
+ pa_authkey_prop_unref(m->core, PA_NATIVE_COOKIE_PROPERTY_NAME);
+
+ pa_xfree(u->id);
+ pa_xfree(u);
+}
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