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/* $Id$ */
/***
This file is part of polypaudio.
polypaudio 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.
polypaudio 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 polypaudio; 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 <polypcore/module.h>
#include <polypcore/sink.h>
#include <polypcore/core-scache.h>
#include <polypcore/modargs.h>
#include <polypcore/xmalloc.h>
#include <polypcore/namereg.h>
#include <polypcore/log.h>
#include <polypcore/x11wrap.h>
#include <polypcore/util.h>
#include <polypcore/native-common.h>
#include <polypcore/authkey-prop.h>
#include <polypcore/authkey.h>
#include <polypcore/x11prop.h>
#include <polypcore/strlist.h>
#include <polypcore/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;
Display *display;
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;
u->display = pa_x11_wrapper_get_display(u->x11_wrapper);
if (!(l = pa_property_get(c, PA_NATIVE_SERVER_PROPERTY_NAME)))
goto fail;
s = pa_strlist_tostring(l);
pa_x11_set_prop(u->display, "POLYP_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(u->display, "POLYP_ID", u->id);
if ((t = pa_modargs_get_value(ma, "source", NULL)))
pa_x11_set_prop(u->display, "POLYP_SOURCE", t);
if ((t = pa_modargs_get_value(ma, "sink", NULL)))
pa_x11_set_prop(u->display, "POLYP_SINK", t);
pa_x11_set_prop(u->display, "POLYP_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(u->display, "POLYP_ID", t, sizeof(t)) || strcmp(t, u->id))
pa_log_warn(__FILE__": Polypaudio information vanished from X11!");
else {
pa_x11_del_prop(u->display, "POLYP_ID");
pa_x11_del_prop(u->display, "POLYP_SERVER");
pa_x11_del_prop(u->display, "POLYP_SINK");
pa_x11_del_prop(u->display, "POLYP_SOURCE");
pa_x11_del_prop(u->display, "POLYP_COOKIE");
XSync(u->display, 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);
}
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