--- /dev/null
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2011 Lennart Poettering
+
+ systemd is free software; you can redistribute it and/or modify it
+ under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 2 of the License, or
+ (at your option) any later version.
+
+ systemd 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 General Public License
+ along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <errno.h>
+
+#include "logind.h"
+#include "logind-seat.h"
+#include "dbus-common.h"
+#include "util.h"
+
+#define BUS_SEAT_INTERFACE \
+ " <interface name=\"org.freedesktop.login1.Seat\">\n" \
+ " <method name=\"Terminate\"/>\n" \
+ " <property name=\"Id\" type=\"s\" access=\"read\"/>\n" \
+ " <property name=\"Active\" type=\"so\" access=\"read\"/>\n" \
+ " <property name=\"Sessions\" type=\"a(so)\" access=\"read\"/>\n" \
+ " </interface>\n" \
+
+#define INTROSPECTION \
+ DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
+ "<node>\n" \
+ BUS_SEAT_INTERFACE \
+ BUS_PROPERTIES_INTERFACE \
+ BUS_PEER_INTERFACE \
+ BUS_INTROSPECTABLE_INTERFACE \
+ "</node>\n"
+
+#define INTERFACES_LIST \
+ BUS_GENERIC_INTERFACES_LIST \
+ "org.freedesktop.login1.Seat\0"
+
+static int bus_seat_append_active(DBusMessageIter *i, const char *property, void *data) {
+ DBusMessageIter sub;
+ Seat *s = data;
+ const char *id, *path;
+ char *p = NULL;
+
+ assert(i);
+ assert(property);
+ assert(s);
+
+ if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
+ return -ENOMEM;
+
+ if (s->active) {
+ id = s->active->id;
+ path = p = session_bus_path(s->active);
+
+ if (!p)
+ return -ENOMEM;
+ } else {
+ id = "";
+ path = "/";
+ }
+
+ if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &id) ||
+ !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &path)) {
+ free(p);
+ return -ENOMEM;
+ }
+
+ free(p);
+
+ if (!dbus_message_iter_close_container(i, &sub))
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int bus_seat_append_sessions(DBusMessageIter *i, const char *property, void *data) {
+ DBusMessageIter sub, sub2;
+ Seat *s = data;
+ Session *session;
+
+ assert(i);
+ assert(property);
+ assert(s);
+
+ if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "so", &sub))
+ return -ENOMEM;
+
+ LIST_FOREACH(sessions_by_seat, session, s->sessions) {
+ char *p;
+
+ if (!dbus_message_iter_open_container(&sub, DBUS_TYPE_STRUCT, NULL, &sub2))
+ return -ENOMEM;
+
+ p = session_bus_path(session);
+ if (!p)
+ return -ENOMEM;
+
+ if (!dbus_message_iter_append_basic(&sub2, DBUS_TYPE_STRING, &session->id) ||
+ !dbus_message_iter_append_basic(&sub2, DBUS_TYPE_OBJECT_PATH, &p)) {
+ free(p);
+ return -ENOMEM;
+ }
+
+ free(p);
+
+ if (!dbus_message_iter_close_container(&sub, &sub2))
+ return -ENOMEM;
+ }
+
+ if (!dbus_message_iter_close_container(i, &sub))
+ return -ENOMEM;
+
+ return 0;
+}
+
+static int get_seat_for_path(Manager *m, const char *path, Seat **_s) {
+ Seat *s;
+ char *id;
+
+ assert(m);
+ assert(path);
+ assert(_s);
+
+ if (!startswith(path, "/org/freedesktop/login1/seat/"))
+ return -EINVAL;
+
+ id = bus_path_unescape(path + 29);
+ if (!id)
+ return -ENOMEM;
+
+ s = hashmap_get(m->seats, id);
+ free(id);
+
+ if (!s)
+ return -ENOENT;
+
+ *_s = s;
+ return 0;
+}
+
+static DBusHandlerResult seat_message_dispatch(
+ Seat *s,
+ DBusConnection *connection,
+ DBusMessage *message) {
+
+ const BusProperty properties[] = {
+ { "org.freedesktop.login1.Seat", "Id", bus_property_append_string, "s", s->id },
+ { "org.freedesktop.login1.Seat", "Active", bus_seat_append_active, "(so)", s },
+ { "org.freedesktop.login1.Seat", "Sessions", bus_seat_append_sessions, "a(so)", s },
+ { NULL, NULL, NULL, NULL, NULL }
+ };
+
+ assert(s);
+ assert(connection);
+ assert(message);
+
+ return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, properties);
+}
+
+static DBusHandlerResult seat_message_handler(
+ DBusConnection *connection,
+ DBusMessage *message,
+ void *userdata) {
+
+ Manager *m = userdata;
+ Seat *s;
+ int r;
+
+ r = get_seat_for_path(m, dbus_message_get_path(message), &s);
+ if (r < 0) {
+
+ if (r == -ENOMEM)
+ return DBUS_HANDLER_RESULT_NEED_MEMORY;
+
+ if (r == -ENOENT) {
+ DBusError e;
+
+ dbus_error_init(&e);
+ dbus_set_error_const(&e, DBUS_ERROR_UNKNOWN_OBJECT, "Unknown seat");
+ return bus_send_error_reply(connection, message, &e, r);
+ }
+
+ return bus_send_error_reply(connection, message, NULL, r);
+ }
+
+ return seat_message_dispatch(s, connection, message);
+}
+
+const DBusObjectPathVTable bus_seat_vtable = {
+ .message_function = seat_message_handler
+};
+
+char *seat_bus_path(Seat *s) {
+ char *t, *r;
+
+ assert(s);
+
+ t = bus_path_escape(s->id);
+ if (!t)
+ return NULL;
+
+ r = strappend("/org/freedesktop/login1/seat/", t);
+ free(t);
+
+ return r;
+}
~ianmdlvl / elogind.git / blobdiff