mirror of
https://gitlab.freedesktop.org/pulseaudio/pulseaudio.git
synced 2025-11-06 13:29:56 -05:00
5effc83479
FSF addresses used in PA sources are no longer valid and rpmlint generates numerous warnings during packaging because of this. This patch changes all FSF addresses to FSF web page according to the GPL how-to: https://www.gnu.org/licenses/gpl-howto.en.html Done automatically by sed-ing through sources.
355 lines
9.9 KiB
C
355 lines
9.9 KiB
C
/***
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This file is part of PulseAudio.
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Copyright 2008 Lennart Poettering
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PulseAudio is free software; you can redistribute it and/or modify
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it under the terms of the GNU Lesser General Public License as published
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by the Free Software Foundation; either version 2.1 of the License,
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or (at your option) any later version.
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PulseAudio is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU Lesser General Public License
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along with PulseAudio; if not, see <http://www.gnu.org/licenses/>.
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***/
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#ifdef HAVE_CONFIG_H
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#include <config.h>
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#endif
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#include <stdio.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <errno.h>
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#include <stdlib.h>
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#include <sys/types.h>
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#include <pulse/xmalloc.h>
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#include <pulsecore/module.h>
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#include <pulsecore/log.h>
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#include <pulsecore/hashmap.h>
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#include <pulsecore/idxset.h>
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#include <pulsecore/modargs.h>
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#include <pulsecore/dbus-shared.h>
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#include "module-console-kit-symdef.h"
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PA_MODULE_AUTHOR("Lennart Poettering");
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PA_MODULE_DESCRIPTION("Create a client for each ConsoleKit session of this user");
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PA_MODULE_VERSION(PACKAGE_VERSION);
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PA_MODULE_LOAD_ONCE(true);
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static const char* const valid_modargs[] = {
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NULL
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};
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struct session {
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char *id;
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pa_client *client;
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};
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struct userdata {
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pa_module *module;
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pa_core *core;
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pa_dbus_connection *connection;
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pa_hashmap *sessions;
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bool filter_added;
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};
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static void add_session(struct userdata *u, const char *id) {
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DBusError error;
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DBusMessage *m = NULL, *reply = NULL;
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uint32_t uid;
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struct session *session;
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pa_client_new_data data;
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dbus_error_init(&error);
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if (pa_hashmap_get(u->sessions, id)) {
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pa_log_warn("Duplicate session %s, ignoring.", id);
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return;
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}
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if (!(m = dbus_message_new_method_call("org.freedesktop.ConsoleKit", id, "org.freedesktop.ConsoleKit.Session", "GetUnixUser"))) {
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pa_log("Failed to allocate GetUnixUser() method call.");
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goto fail;
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}
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if (!(reply = dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(u->connection), m, -1, &error))) {
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pa_log("GetUnixUser() call failed: %s: %s", error.name, error.message);
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goto fail;
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}
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/* CK 0.3 this changed from int32 to uint32 */
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if (!dbus_message_get_args(reply, &error, DBUS_TYPE_UINT32, &uid, DBUS_TYPE_INVALID)) {
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dbus_error_free(&error);
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if (!dbus_message_get_args(reply, &error, DBUS_TYPE_INT32, &uid, DBUS_TYPE_INVALID)) {
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pa_log("Failed to parse GetUnixUser() result: %s: %s", error.name, error.message);
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goto fail;
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}
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}
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/* We only care about our own sessions */
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if ((uid_t) uid != getuid())
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goto fail;
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session = pa_xnew(struct session, 1);
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session->id = pa_xstrdup(id);
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pa_client_new_data_init(&data);
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data.module = u->module;
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data.driver = __FILE__;
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pa_proplist_setf(data.proplist, PA_PROP_APPLICATION_NAME, "ConsoleKit Session %s", id);
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pa_proplist_sets(data.proplist, "console-kit.session", id);
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session->client = pa_client_new(u->core, &data);
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pa_client_new_data_done(&data);
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if (!session->client) {
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pa_xfree(session->id);
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pa_xfree(session);
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goto fail;
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}
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pa_hashmap_put(u->sessions, session->id, session);
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pa_log_debug("Added new session %s", id);
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fail:
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if (m)
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dbus_message_unref(m);
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if (reply)
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dbus_message_unref(reply);
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dbus_error_free(&error);
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}
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static void free_session(struct session *session) {
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pa_assert(session);
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pa_log_debug("Removing session %s", session->id);
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pa_client_free(session->client);
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pa_xfree(session->id);
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pa_xfree(session);
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}
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static void remove_session(struct userdata *u, const char *id) {
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pa_assert(u);
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pa_assert(id);
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pa_hashmap_remove_and_free(u->sessions, id);
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}
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static DBusHandlerResult filter_cb(DBusConnection *bus, DBusMessage *message, void *userdata) {
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struct userdata *u = userdata;
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DBusError error;
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const char *path;
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pa_assert(bus);
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pa_assert(message);
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pa_assert(u);
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dbus_error_init(&error);
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if (dbus_message_is_signal(message, "org.freedesktop.ConsoleKit.Seat", "SessionAdded")) {
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/* CK API changed to match spec in 0.3 */
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if (!dbus_message_get_args(message, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) {
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dbus_error_free(&error);
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if (!dbus_message_get_args(message, &error, DBUS_TYPE_STRING, &path, DBUS_TYPE_INVALID)) {
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pa_log_error("Failed to parse SessionAdded message: %s: %s", error.name, error.message);
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goto finish;
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}
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}
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add_session(u, path);
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} else if (dbus_message_is_signal(message, "org.freedesktop.ConsoleKit.Seat", "SessionRemoved")) {
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/* CK API changed to match spec in 0.3 */
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if (!dbus_message_get_args(message, &error, DBUS_TYPE_OBJECT_PATH, &path, DBUS_TYPE_INVALID)) {
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dbus_error_free(&error);
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if (!dbus_message_get_args(message, &error, DBUS_TYPE_STRING, &path, DBUS_TYPE_INVALID)) {
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pa_log_error("Failed to parse SessionRemoved message: %s: %s", error.name, error.message);
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goto finish;
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}
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}
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remove_session(u, path);
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}
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finish:
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dbus_error_free(&error);
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return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
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}
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static int get_session_list(struct userdata *u) {
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DBusError error;
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DBusMessage *m = NULL, *reply = NULL;
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uint32_t uid;
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DBusMessageIter iter, sub;
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int ret = -1;
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pa_assert(u);
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dbus_error_init(&error);
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if (!(m = dbus_message_new_method_call("org.freedesktop.ConsoleKit", "/org/freedesktop/ConsoleKit/Manager", "org.freedesktop.ConsoleKit.Manager", "GetSessionsForUnixUser"))) {
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pa_log("Failed to allocate GetSessionsForUnixUser() method call.");
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goto fail;
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}
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uid = (uint32_t) getuid();
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if (!(dbus_message_append_args(m, DBUS_TYPE_UINT32, &uid, DBUS_TYPE_INVALID))) {
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pa_log("Failed to append arguments to GetSessionsForUnixUser() method call.");
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goto fail;
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}
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if (!(reply = dbus_connection_send_with_reply_and_block(pa_dbus_connection_get(u->connection), m, -1, &error))) {
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pa_log("GetSessionsForUnixUser() call failed: %s: %s", error.name, error.message);
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goto fail;
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}
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dbus_message_iter_init(reply, &iter);
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if (dbus_message_iter_get_arg_type(&iter) != DBUS_TYPE_ARRAY ||
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dbus_message_iter_get_element_type(&iter) != DBUS_TYPE_OBJECT_PATH) {
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pa_log("Failed to parse GetSessionsForUnixUser() result.");
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goto fail;
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}
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dbus_message_iter_recurse(&iter, &sub);
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for (;;) {
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int at;
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const char *id;
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if ((at = dbus_message_iter_get_arg_type(&sub)) == DBUS_TYPE_INVALID)
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break;
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pa_assert(at == DBUS_TYPE_OBJECT_PATH);
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dbus_message_iter_get_basic(&sub, &id);
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add_session(u, id);
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dbus_message_iter_next(&sub);
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}
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ret = 0;
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fail:
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if (m)
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dbus_message_unref(m);
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if (reply)
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dbus_message_unref(reply);
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dbus_error_free(&error);
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return ret;
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}
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int pa__init(pa_module*m) {
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DBusError error;
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pa_dbus_connection *connection;
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struct userdata *u = NULL;
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pa_modargs *ma;
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pa_assert(m);
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dbus_error_init(&error);
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/* If systemd's logind service is running, we shouldn't watch ConsoleKit
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* but login */
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if (access("/run/systemd/seats/", F_OK) >= 0)
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return 0;
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if (!(ma = pa_modargs_new(m->argument, valid_modargs))) {
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pa_log("Failed to parse module arguments");
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goto fail;
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}
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if (!(connection = pa_dbus_bus_get(m->core, DBUS_BUS_SYSTEM, &error)) || dbus_error_is_set(&error)) {
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if (connection)
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pa_dbus_connection_unref(connection);
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pa_log_error("Unable to contact D-Bus system bus: %s: %s", error.name, error.message);
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goto fail;
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}
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m->userdata = u = pa_xnew0(struct userdata, 1);
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u->core = m->core;
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u->module = m;
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u->connection = connection;
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u->sessions = pa_hashmap_new_full(pa_idxset_string_hash_func, pa_idxset_string_compare_func, NULL, (pa_free_cb_t) free_session);
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if (!dbus_connection_add_filter(pa_dbus_connection_get(connection), filter_cb, u, NULL)) {
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pa_log_error("Failed to add filter function");
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goto fail;
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}
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u->filter_added = true;
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if (pa_dbus_add_matches(
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pa_dbus_connection_get(connection), &error,
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"type='signal',sender='org.freedesktop.ConsoleKit',interface='org.freedesktop.ConsoleKit.Seat',member='SessionAdded'",
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"type='signal',sender='org.freedesktop.ConsoleKit',interface='org.freedesktop.ConsoleKit.Seat',member='SessionRemoved'", NULL) < 0) {
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pa_log_error("Unable to subscribe to ConsoleKit signals: %s: %s", error.name, error.message);
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goto fail;
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}
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if (get_session_list(u) < 0)
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goto fail;
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pa_modargs_free(ma);
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return 0;
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fail:
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if (ma)
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pa_modargs_free(ma);
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dbus_error_free(&error);
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pa__done(m);
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return -1;
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}
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void pa__done(pa_module *m) {
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struct userdata *u;
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pa_assert(m);
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if (!(u = m->userdata))
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return;
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if (u->sessions)
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pa_hashmap_free(u->sessions);
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if (u->connection) {
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pa_dbus_remove_matches(
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pa_dbus_connection_get(u->connection),
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"type='signal',sender='org.freedesktop.ConsoleKit',interface='org.freedesktop.ConsoleKit.Seat',member='SessionAdded'",
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"type='signal',sender='org.freedesktop.ConsoleKit',interface='org.freedesktop.ConsoleKit.Seat',member='SessionRemoved'", NULL);
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if (u->filter_added)
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dbus_connection_remove_filter(pa_dbus_connection_get(u->connection), filter_cb, u);
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pa_dbus_connection_unref(u->connection);
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}
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pa_xfree(u);
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}
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