267 lines
11 KiB
C
267 lines
11 KiB
C
/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
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/***
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This file is part of systemd.
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Copyright 2011 Lennart Poettering
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systemd is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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systemd 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 General Public License
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along with systemd; If not, see <http://www.gnu.org/licenses/>.
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***/
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#include <errno.h>
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#include "logind.h"
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#include "logind-session.h"
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#include "dbus-common.h"
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#include "util.h"
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#define BUS_SESSION_INTERFACE \
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" <interface name=\"org.freedesktop.login1.Session\">\n" \
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" <method name=\"Terminate\"/>\n" \
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" <method name=\"Activate\"/>\n" \
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" <method name=\"Lock\"/>\n" \
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" <method name=\"Unlock\"/>\n" \
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" <method name=\"SetIdleHint\">\n" \
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" <arg name=\"b\" type=\"b\"/>\n" \
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" </method>\n" \
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" <property name=\"Id\" type=\"u\" access=\"read\"/>\n" \
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" <property name=\"User\" type=\"(uo)\" access=\"read\"/>\n" \
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" <property name=\"Name\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"Timestamp\" type=\"t\" access=\"read\"/>\n" \
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" <property name=\"TimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
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" <property name=\"ControlGroupPath\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"VTNr\" type=\"u\" access=\"read\"/>\n" \
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" <property name=\"Seat\" type=\"(so)\" access=\"read\"/>\n" \
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" <property name=\"TTY\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"Display\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"Remote\" type=\"b\" access=\"read\"/>\n" \
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" <property name=\"RemoteHost\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"RemoteUser\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"Leader\" type=\"u\" access=\"read\"/>\n" \
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" <property name=\"Audit\" type=\"u\" access=\"read\"/>\n" \
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" <property name=\"Type\" type=\"s\" access=\"read\"/>\n" \
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" <property name=\"Active\" type=\"b\" access=\"read\"/>\n" \
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" <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \
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" <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \
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" <property name=\"KillProcesses\" type=\"b\" access=\"read\"/>\n" \
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" <property name=\"IdleHint\" type=\"b\" access=\"read\"/>\n" \
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" <property name=\"IdleSinceHint\" type=\"t\" access=\"read\"/>\n" \
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" <property name=\"IdleSinceHintMonotonic\" type=\"t\" access=\"read\"/>\n" \
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" </interface>\n"
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#define INTROSPECTION \
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DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
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"<node>\n" \
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BUS_SESSION_INTERFACE \
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BUS_PROPERTIES_INTERFACE \
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BUS_PEER_INTERFACE \
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BUS_INTROSPECTABLE_INTERFACE \
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"</node>\n"
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#define INTERFACES_LIST \
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BUS_GENERIC_INTERFACES_LIST \
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"org.freedesktop.login1.Session\0"
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static int bus_session_append_seat(DBusMessageIter *i, const char *property, void *data) {
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DBusMessageIter sub;
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Session *s = data;
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const char *id, *path;
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char *p = NULL;
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assert(i);
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assert(property);
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assert(s);
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if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
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return -ENOMEM;
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if (s->seat) {
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id = s->seat->id;
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path = p = seat_bus_path(s->seat);
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if (!p)
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return -ENOMEM;
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} else {
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id = "";
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path = "/";
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}
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if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &id) ||
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!dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &path)) {
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free(p);
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return -ENOMEM;
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}
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free(p);
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if (!dbus_message_iter_close_container(i, &sub))
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return -ENOMEM;
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return 0;
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}
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static int bus_session_append_user(DBusMessageIter *i, const char *property, void *data) {
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DBusMessageIter sub;
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Session *s = data;
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char *p = NULL;
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assert(i);
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assert(property);
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assert(s);
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if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
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return -ENOMEM;
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p = user_bus_path(s->user);
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if (!p)
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return -ENOMEM;
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if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &s->user->uid) ||
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!dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
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free(p);
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return -ENOMEM;
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}
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free(p);
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if (!dbus_message_iter_close_container(i, &sub))
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return -ENOMEM;
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return 0;
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}
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static int bus_session_append_active(DBusMessageIter *i, const char *property, void *data) {
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Session *s = data;
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bool b;
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assert(i);
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assert(property);
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assert(s);
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b = session_is_active(s);
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if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
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return -ENOMEM;
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return 0;
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}
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static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_session_append_type, session_type, SessionType);
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static int get_session_for_path(Manager *m, const char *path, Session **_s) {
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Session *s;
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char *id;
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assert(m);
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assert(path);
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assert(_s);
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if (!startswith(path, "/org/freedesktop/login1/session/"))
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return -EINVAL;
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id = bus_path_unescape(path + 32);
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if (!id)
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return -ENOMEM;
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s = hashmap_get(m->sessions, id);
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free(id);
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if (!s)
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return -ENOENT;
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*_s = s;
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return 0;
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}
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static DBusHandlerResult session_message_dispatch(
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Session *s,
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DBusConnection *connection,
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DBusMessage *message) {
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const BusProperty properties[] = {
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{ "org.freedesktop.login1.Session", "Id", bus_property_append_string, "s", s->id },
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{ "org.freedesktop.login1.Session", "User", bus_session_append_user, "(uo)", s },
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{ "org.freedesktop.login1.Session", "Name", bus_property_append_string, "s", s->user->name },
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{ "org.freedesktop.login1.Session", "ControlGroupPath", bus_property_append_string, "s", s->cgroup_path },
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{ "org.freedesktop.login1.Session", "VTNr", bus_property_append_uint32, "u", &s->vtnr },
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{ "org.freedesktop.login1.Session", "Seat", bus_session_append_seat, "(so)", s },
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{ "org.freedesktop.login1.Session", "TTY", bus_property_append_string, "s", s->tty },
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{ "org.freedesktop.login1.Session", "Display", bus_property_append_string, "s", s->display },
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{ "org.freedesktop.login1.Session", "Remote", bus_property_append_bool, "b", &s->remote },
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{ "org.freedesktop.login1.Session", "RemoteUser", bus_property_append_string, "s", s->remote_user },
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{ "org.freedesktop.login1.Session", "RemoteHost", bus_property_append_string, "s", s->remote_host },
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{ "org.freedesktop.login1.Session", "Leader", bus_property_append_pid, "u", &s->leader },
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{ "org.freedesktop.login1.Session", "Audit", bus_property_append_uint32, "u", &s->audit_id },
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{ "org.freedesktop.login1.Session", "Type", bus_session_append_type, "s", &s->type },
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{ "org.freedesktop.login1.Session", "Active", bus_session_append_active, "b", s },
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{ "org.freedesktop.login1.Session", "Controllers", bus_property_append_strv, "as", s->controllers },
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{ "org.freedesktop.login1.Session", "ResetControllers", bus_property_append_strv, "as", s->reset_controllers },
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{ "org.freedesktop.login1.Session", "KillProcesses", bus_property_append_bool, "b", &s->kill_processes },
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{ NULL, NULL, NULL, NULL, NULL }
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};
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assert(s);
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assert(connection);
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assert(message);
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return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, properties);
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}
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static DBusHandlerResult session_message_handler(
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DBusConnection *connection,
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DBusMessage *message,
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void *userdata) {
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Manager *m = userdata;
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Session *s;
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int r;
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r = get_session_for_path(m, dbus_message_get_path(message), &s);
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if (r < 0) {
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if (r == -ENOMEM)
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return DBUS_HANDLER_RESULT_NEED_MEMORY;
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if (r == -ENOENT) {
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DBusError e;
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dbus_error_init(&e);
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dbus_set_error_const(&e, DBUS_ERROR_UNKNOWN_OBJECT, "Unknown session");
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return bus_send_error_reply(connection, message, &e, r);
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}
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return bus_send_error_reply(connection, message, NULL, r);
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}
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return session_message_dispatch(s, connection, message);
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}
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const DBusObjectPathVTable bus_session_vtable = {
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.message_function = session_message_handler
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};
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char *session_bus_path(Session *s) {
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char *t, *r;
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assert(s);
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t = bus_path_escape(s->id);
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if (!t)
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return NULL;
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r = strappend("/org/freedesktop/login1/session/", t);
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free(t);
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return r;
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}
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