+++ /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 <string.h>
-
-#include "logind.h"
-#include "logind-session.h"
-#include "dbus-common.h"
-#include "util.h"
-
-#define BUS_SESSION_INTERFACE \
- " <interface name=\"org.freedesktop.login1.Session\">\n" \
- " <method name=\"Terminate\"/>\n" \
- " <method name=\"Activate\"/>\n" \
- " <method name=\"Lock\"/>\n" \
- " <method name=\"Unlock\"/>\n" \
- " <method name=\"SetIdleHint\">\n" \
- " <arg name=\"b\" type=\"b\"/>\n" \
- " </method>\n" \
- " <method name=\"Kill\">\n" \
- " <arg name=\"who\" type=\"s\"/>\n" \
- " <arg name=\"signal\" type=\"s\"/>\n" \
- " </method>\n" \
- " <property name=\"Id\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"User\" type=\"(uo)\" access=\"read\"/>\n" \
- " <property name=\"Name\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"Timestamp\" type=\"t\" access=\"read\"/>\n" \
- " <property name=\"TimestampMonotonic\" type=\"t\" access=\"read\"/>\n" \
- " <property name=\"ControlGroupPath\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"VTNr\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"Seat\" type=\"(so)\" access=\"read\"/>\n" \
- " <property name=\"TTY\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"Display\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"Remote\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"RemoteHost\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"RemoteUser\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"Service\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"Leader\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"Audit\" type=\"u\" access=\"read\"/>\n" \
- " <property name=\"Type\" type=\"s\" access=\"read\"/>\n" \
- " <property name=\"Active\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"Controllers\" type=\"as\" access=\"read\"/>\n" \
- " <property name=\"ResetControllers\" type=\"as\" access=\"read\"/>\n" \
- " <property name=\"KillProcesses\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"IdleHint\" type=\"b\" access=\"read\"/>\n" \
- " <property name=\"IdleSinceHint\" type=\"t\" access=\"read\"/>\n" \
- " <property name=\"IdleSinceHintMonotonic\" type=\"t\" access=\"read\"/>\n" \
- " </interface>\n"
-
-#define INTROSPECTION \
- DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE \
- "<node>\n" \
- BUS_SESSION_INTERFACE \
- BUS_PROPERTIES_INTERFACE \
- BUS_PEER_INTERFACE \
- BUS_INTROSPECTABLE_INTERFACE \
- "</node>\n"
-
-#define INTERFACES_LIST \
- BUS_GENERIC_INTERFACES_LIST \
- "org.freedesktop.login1.Session\0"
-
-static int bus_session_append_seat(DBusMessageIter *i, const char *property, void *data) {
- DBusMessageIter sub;
- Session *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->seat) {
- id = s->seat->id;
- path = p = seat_bus_path(s->seat);
-
- 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_session_append_user(DBusMessageIter *i, const char *property, void *data) {
- DBusMessageIter sub;
- Session *s = data;
- char *p = NULL;
-
- assert(i);
- assert(property);
- assert(s);
-
- if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
- return -ENOMEM;
-
- p = user_bus_path(s->user);
- if (!p)
- return -ENOMEM;
-
- if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &s->user->uid) ||
- !dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
- free(p);
- return -ENOMEM;
- }
-
- free(p);
-
- if (!dbus_message_iter_close_container(i, &sub))
- return -ENOMEM;
-
- return 0;
-}
-
-static int bus_session_append_active(DBusMessageIter *i, const char *property, void *data) {
- Session *s = data;
- dbus_bool_t b;
-
- assert(i);
- assert(property);
- assert(s);
-
- b = session_is_active(s);
- if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
- return -ENOMEM;
-
- return 0;
-}
-
-static int bus_session_append_idle_hint(DBusMessageIter *i, const char *property, void *data) {
- Session *s = data;
- int b;
-
- assert(i);
- assert(property);
- assert(s);
-
- b = session_get_idle_hint(s, NULL) > 0;
- if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
- return -ENOMEM;
-
- return 0;
-}
-
-static int bus_session_append_idle_hint_since(DBusMessageIter *i, const char *property, void *data) {
- Session *s = data;
- dual_timestamp t;
- uint64_t u;
-
- assert(i);
- assert(property);
- assert(s);
-
- session_get_idle_hint(s, &t);
- u = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
-
- if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &u))
- return -ENOMEM;
-
- return 0;
-}
-
-static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_session_append_type, session_type, SessionType);
-
-static int get_session_for_path(Manager *m, const char *path, Session **_s) {
- Session *s;
- char *id;
-
- assert(m);
- assert(path);
- assert(_s);
-
- if (!startswith(path, "/org/freedesktop/login1/session/"))
- return -EINVAL;
-
- id = bus_path_unescape(path + 32);
- if (!id)
- return -ENOMEM;
-
- s = hashmap_get(m->sessions, id);
- free(id);
-
- if (!s)
- return -ENOENT;
-
- *_s = s;
- return 0;
-}
-
-static DBusHandlerResult session_message_dispatch(
- Session *s,
- DBusConnection *connection,
- DBusMessage *message) {
-
- const BusProperty properties[] = {
- { "org.freedesktop.login1.Session", "Id", bus_property_append_string, "s", s->id },
- { "org.freedesktop.login1.Session", "User", bus_session_append_user, "(uo)", s },
- { "org.freedesktop.login1.Session", "Name", bus_property_append_string, "s", s->user->name },
- { "org.freedesktop.login1.Session", "Timestamp", bus_property_append_usec, "t", &s->timestamp.realtime },
- { "org.freedesktop.login1.Session", "TimestampMonotonic", bus_property_append_usec, "t", &s->timestamp.monotonic },
- { "org.freedesktop.login1.Session", "ControlGroupPath", bus_property_append_string, "s", s->cgroup_path },
- { "org.freedesktop.login1.Session", "VTNr", bus_property_append_uint32, "u", &s->vtnr },
- { "org.freedesktop.login1.Session", "Seat", bus_session_append_seat, "(so)", s },
- { "org.freedesktop.login1.Session", "TTY", bus_property_append_string, "s", s->tty },
- { "org.freedesktop.login1.Session", "Display", bus_property_append_string, "s", s->display },
- { "org.freedesktop.login1.Session", "Remote", bus_property_append_bool, "b", &s->remote },
- { "org.freedesktop.login1.Session", "RemoteUser", bus_property_append_string, "s", s->remote_user },
- { "org.freedesktop.login1.Session", "RemoteHost", bus_property_append_string, "s", s->remote_host },
- { "org.freedesktop.login1.Session", "Service", bus_property_append_string, "s", s->service },
- { "org.freedesktop.login1.Session", "Leader", bus_property_append_pid, "u", &s->leader },
- { "org.freedesktop.login1.Session", "Audit", bus_property_append_uint32, "u", &s->audit_id },
- { "org.freedesktop.login1.Session", "Type", bus_session_append_type, "s", &s->type },
- { "org.freedesktop.login1.Session", "Active", bus_session_append_active, "b", s },
- { "org.freedesktop.login1.Session", "Controllers", bus_property_append_strv, "as", s->controllers },
- { "org.freedesktop.login1.Session", "ResetControllers", bus_property_append_strv, "as", s->reset_controllers },
- { "org.freedesktop.login1.Session", "KillProcesses", bus_property_append_bool, "b", &s->kill_processes },
- { "org.freedesktop.login1.Session", "IdleHint", bus_session_append_idle_hint, "b", s },
- { "org.freedesktop.login1.Session", "IdleSinceHint", bus_session_append_idle_hint_since, "t", s },
- { "org.freedesktop.login1.Session", "IdleSinceHintMonotonic", bus_session_append_idle_hint_since, "t", s },
- { NULL, NULL, NULL, NULL, NULL }
- };
-
- DBusError error;
- DBusMessage *reply = NULL;
- int r;
-
- assert(s);
- assert(connection);
- assert(message);
-
- dbus_error_init(&error);
-
- if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Terminate")) {
-
- r = session_stop(s);
- if (r < 0)
- return bus_send_error_reply(connection, message, NULL, r);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Activate")) {
-
- r = session_activate(s);
- if (r < 0)
- return bus_send_error_reply(connection, message, NULL, r);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Lock") ||
- dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Unlock")) {
-
- if (session_send_signal(s, streq(dbus_message_get_member(message), "Lock")) < 0)
- goto oom;
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "SetIdleHint")) {
- dbus_bool_t b;
- unsigned long ul;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_BOOLEAN, &b,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- ul = dbus_bus_get_unix_user(connection, dbus_message_get_sender(message), &error);
- if (ul == (unsigned long) -1)
- return bus_send_error_reply(connection, message, &error, -EIO);
-
- if (ul != 0 && ul != s->user->uid)
- return bus_send_error_reply(connection, message, NULL, -EPERM);
-
- session_set_idle_hint(s, b);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else if (dbus_message_is_method_call(message, "org.freedesktop.login1.Session", "Kill")) {
- const char *swho;
- int32_t signo;
- KillWho who;
-
- if (!dbus_message_get_args(
- message,
- &error,
- DBUS_TYPE_STRING, &swho,
- DBUS_TYPE_INT32, &signo,
- DBUS_TYPE_INVALID))
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- if (isempty(swho))
- who = KILL_ALL;
- else {
- who = kill_who_from_string(swho);
- if (who < 0)
- return bus_send_error_reply(connection, message, &error, -EINVAL);
- }
-
- if (signo <= 0 || signo >= _NSIG)
- return bus_send_error_reply(connection, message, &error, -EINVAL);
-
- r = session_kill(s, who, signo);
- if (r < 0)
- return bus_send_error_reply(connection, message, NULL, r);
-
- reply = dbus_message_new_method_return(message);
- if (!reply)
- goto oom;
-
- } else
- return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, properties);
-
- if (reply) {
- if (!dbus_connection_send(connection, reply, NULL))
- goto oom;
-
- dbus_message_unref(reply);
- }
-
- return DBUS_HANDLER_RESULT_HANDLED;
-
-oom:
- if (reply)
- dbus_message_unref(reply);
-
- dbus_error_free(&error);
-
- return DBUS_HANDLER_RESULT_NEED_MEMORY;
-}
-
-static DBusHandlerResult session_message_handler(
- DBusConnection *connection,
- DBusMessage *message,
- void *userdata) {
-
- Manager *m = userdata;
- Session *s;
- int r;
-
- r = get_session_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 session");
- return bus_send_error_reply(connection, message, &e, r);
- }
-
- return bus_send_error_reply(connection, message, NULL, r);
- }
-
- return session_message_dispatch(s, connection, message);
-}
-
-const DBusObjectPathVTable bus_session_vtable = {
- .message_function = session_message_handler
-};
-
-char *session_bus_path(Session *s) {
- char *t, *r;
-
- assert(s);
-
- t = bus_path_escape(s->id);
- if (!t)
- return NULL;
-
- r = strappend("/org/freedesktop/login1/session/", t);
- free(t);
-
- return r;
-}
-
-int session_send_signal(Session *s, bool new_session) {
- DBusMessage *m;
- int r = -ENOMEM;
- char *p = NULL;
-
- assert(s);
-
- m = dbus_message_new_signal("/org/freedesktop/login1",
- "org.freedesktop.login1.Manager",
- new_session ? "SessionNew" : "SessionRemoved");
-
- if (!m)
- return -ENOMEM;
-
- p = session_bus_path(s);
- if (!p)
- goto finish;
-
- if (!dbus_message_append_args(
- m,
- DBUS_TYPE_STRING, &s->id,
- DBUS_TYPE_OBJECT_PATH, &p,
- DBUS_TYPE_INVALID))
- goto finish;
-
- if (!dbus_connection_send(s->manager->bus, m, NULL))
- goto finish;
-
- r = 0;
-
-finish:
- dbus_message_unref(m);
- free(p);
-
- return r;
-}
-
-int session_send_changed(Session *s, const char *properties) {
- DBusMessage *m;
- int r = -ENOMEM;
- char *p = NULL;
-
- assert(s);
-
- if (!s->started)
- return 0;
-
- p = session_bus_path(s);
- if (!p)
- return -ENOMEM;
-
- m = bus_properties_changed_new(p, "org.freedesktop.login1.Session", properties);
- if (!m)
- goto finish;
-
- if (!dbus_connection_send(s->manager->bus, m, NULL))
- goto finish;
-
- r = 0;
-
-finish:
- if (m)
- dbus_message_unref(m);
- free(p);
-
- return r;
-}
-
-int session_send_lock(Session *s, bool lock) {
- DBusMessage *m;
- bool b;
- char *p;
-
- assert(s);
-
- p = session_bus_path(s);
- if (!p)
- return -ENOMEM;
-
- m = dbus_message_new_signal(p, "org.freedesktop.login1.Session", lock ? "Lock" : "Unlock");
- free(p);
-
- if (!m)
- return -ENOMEM;
-
- b = dbus_connection_send(s->manager->bus, m, NULL);
- dbus_message_unref(m);
-
- if (!b)
- return -ENOMEM;
-
- return 0;
-}
~ianmdlvl / elogind.git / blobdiff