Adding upstream version 14.2.upstream/14.2upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 250 insertions, 0 deletions

diff --git a/src/modules/x11/module-x11-publish.c b/src/modules/x11/module-x11-publish.c
new file mode 100644
index 0000000..68adf15
--- /dev/null
+++ b/src/modules/x11/module-x11-publish.c
@@ -0,0 +1,250 @@
+/***
+  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 2.1 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, see <http://www.gnu.org/licenses/>.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <unistd.h>
+
+#include <xcb/xcb.h>
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/module.h>
+#include <pulsecore/modargs.h>
+#include <pulsecore/log.h>
+#include <pulsecore/x11wrap.h>
+#include <pulsecore/core-util.h>
+#include <pulsecore/native-common.h>
+#include <pulsecore/auth-cookie.h>
+#include <pulsecore/x11prop.h>
+#include <pulsecore/strlist.h>
+#include <pulsecore/protocol-native.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> "
+        "sink=<Sink to publish> "
+        "source=<Source to publish> "
+        "cookie=<Cookie file to publish> ");
+
+static const char* const valid_modargs[] = {
+    "display",
+    "sink",
+    "source",
+    "cookie",
+    "xauthority",
+    NULL
+};
+
+struct userdata {
+    pa_core *core;
+    pa_module *module;
+    pa_native_protocol *protocol;
+
+    char *id;
+    pa_auth_cookie *auth_cookie;
+
+    pa_x11_wrapper *x11_wrapper;
+    pa_x11_client *x11_client;
+
+    pa_hook_slot *hook_slot;
+};
+
+static void publish_servers(struct userdata *u, pa_strlist *l) {
+
+    int screen = DefaultScreen(pa_x11_wrapper_get_display(u->x11_wrapper));
+
+    if (l) {
+        char *s;
+
+        l = pa_strlist_reverse(l);
+        s = pa_strlist_to_string(l);
+        pa_strlist_reverse(l);
+
+        pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SERVER", s);
+        pa_xfree(s);
+    } else
+        pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SERVER");
+}
+
+static pa_hook_result_t servers_changed_cb(void *hook_data, void *call_data, void *slot_data) {
+    pa_strlist *servers = call_data;
+    struct userdata *u = slot_data;
+    char t[256];
+    int screen;
+
+    pa_assert(u);
+
+    screen = DefaultScreen(pa_x11_wrapper_get_display(u->x11_wrapper));
+    if (!pa_x11_get_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_ID", t, sizeof(t)) || !pa_streq(t, u->id)) {
+        pa_log_warn("PulseAudio information vanished from X11!");
+        return PA_HOOK_OK;
+    }
+
+    publish_servers(u, servers);
+    return PA_HOOK_OK;
+}
+
+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, true);
+}
+
+int pa__init(pa_module*m) {
+    struct userdata *u;
+    pa_modargs *ma = NULL;
+    char *mid, *sid;
+    char hx[PA_NATIVE_COOKIE_LENGTH*2+1];
+    const char *t;
+    int screen;
+
+    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->protocol = pa_native_protocol_get(m->core);
+    u->id = NULL;
+    u->auth_cookie = NULL;
+    u->x11_client = NULL;
+    u->x11_wrapper = NULL;
+
+    u->hook_slot = pa_hook_connect(&pa_native_protocol_hooks(u->protocol)[PA_NATIVE_HOOK_SERVERS_CHANGED], PA_HOOK_NORMAL, servers_changed_cb, u);
+
+    if (!(u->auth_cookie = pa_auth_cookie_get(m->core, pa_modargs_get_value(ma, "cookie", PA_NATIVE_COOKIE_FILE), true, PA_NATIVE_COOKIE_LENGTH)))
+        goto fail;
+
+    if (pa_modargs_get_value(ma, "xauthority", NULL)) {
+        if (setenv("XAUTHORITY", pa_modargs_get_value(ma, "xauthority", NULL), 1)) {
+            pa_log("setenv() for $XAUTHORITY failed");
+            goto fail;
+        }
+    }
+
+    if (!(u->x11_wrapper = pa_x11_wrapper_get(m->core, pa_modargs_get_value(ma, "display", NULL))))
+        goto fail;
+
+    screen = DefaultScreen(pa_x11_wrapper_get_display(u->x11_wrapper));
+    mid = pa_machine_id();
+    u->id = pa_sprintf_malloc("%lu@%s/%lu", (unsigned long) getuid(), mid, (unsigned long) getpid());
+    pa_xfree(mid);
+
+    pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_ID", u->id);
+
+    if ((sid = pa_session_id())) {
+        pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SESSION_ID", sid);
+        pa_xfree(sid);
+    }
+
+    publish_servers(u, pa_native_protocol_servers(u->protocol));
+
+    if ((t = pa_modargs_get_value(ma, "source", NULL)))
+        pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SOURCE", t);
+
+    if ((t = pa_modargs_get_value(ma, "sink", NULL)))
+        pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SINK", t);
+
+    pa_x11_set_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_COOKIE",
+                    pa_hexstr(pa_auth_cookie_read(u->auth_cookie, PA_NATIVE_COOKIE_LENGTH), PA_NATIVE_COOKIE_LENGTH, 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];
+        int screen = DefaultScreen(pa_x11_wrapper_get_display(u->x11_wrapper));
+
+        /* Yes, here is a race condition */
+        if (!pa_x11_get_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_ID", t, sizeof(t)) || !pa_streq(t, u->id))
+            pa_log_warn("PulseAudio information vanished from X11!");
+        else {
+            pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_ID");
+            pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SERVER");
+            pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SINK");
+            pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SOURCE");
+            pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_COOKIE");
+            pa_x11_del_prop(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper), screen, "PULSE_SESSION_ID");
+            xcb_flush(pa_x11_wrapper_get_xcb_connection(u->x11_wrapper));
+        }
+
+        pa_x11_wrapper_unref(u->x11_wrapper);
+    }
+
+    if (u->auth_cookie)
+        pa_auth_cookie_unref(u->auth_cookie);
+
+    if (u->hook_slot)
+        pa_hook_slot_free(u->hook_slot);
+
+    if (u->protocol)
+        pa_native_protocol_unref(u->protocol);
+
+    pa_xfree(u->id);
+    pa_xfree(u);
+}