438 lines
14 KiB
C
438 lines
14 KiB
C
/*-*- 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 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.
|
|
|
|
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
|
|
Lesser General Public License for more details.
|
|
|
|
You should have received a copy of the GNU Lesser 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-user.h"
|
|
#include "dbus-common.h"
|
|
|
|
#define BUS_USER_INTERFACE \
|
|
" <interface name=\"org.freedesktop.login1.User\">\n" \
|
|
" <method name=\"Terminate\"/>\n" \
|
|
" <method name=\"Kill\">\n" \
|
|
" <arg name=\"signal\" type=\"s\"/>\n" \
|
|
" </method>\n" \
|
|
" <property name=\"UID\" type=\"u\" access=\"read\"/>\n" \
|
|
" <property name=\"GID\" type=\"u\" 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=\"RuntimePath\" type=\"s\" access=\"read\"/>\n" \
|
|
" <property name=\"DefaultControlGroup\" type=\"s\" access=\"read\"/>\n" \
|
|
" <property name=\"Service\" type=\"s\" access=\"read\"/>\n" \
|
|
" <property name=\"Display\" type=\"(so)\" access=\"read\"/>\n" \
|
|
" <property name=\"State\" type=\"s\" access=\"read\"/>\n" \
|
|
" <property name=\"Sessions\" type=\"a(so)\" 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_USER_INTERFACE \
|
|
BUS_PROPERTIES_INTERFACE \
|
|
BUS_PEER_INTERFACE \
|
|
BUS_INTROSPECTABLE_INTERFACE \
|
|
"</node>\n"
|
|
|
|
#define INTERFACES_LIST \
|
|
BUS_GENERIC_INTERFACES_LIST \
|
|
"org.freedesktop.login1.User\0"
|
|
|
|
static int bus_user_append_display(DBusMessageIter *i, const char *property, void *data) {
|
|
DBusMessageIter sub;
|
|
User *u = data;
|
|
const char *id, *path;
|
|
char *p = NULL;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
|
|
return -ENOMEM;
|
|
|
|
if (u->display) {
|
|
id = u->display->id;
|
|
path = p = session_bus_path(u->display);
|
|
|
|
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_user_append_state(DBusMessageIter *i, const char *property, void *data) {
|
|
User *u = data;
|
|
const char *state;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
state = user_state_to_string(user_get_state(u));
|
|
|
|
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_user_append_sessions(DBusMessageIter *i, const char *property, void *data) {
|
|
DBusMessageIter sub, sub2;
|
|
User *u = data;
|
|
Session *session;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
if (!dbus_message_iter_open_container(i, DBUS_TYPE_ARRAY, "(so)", &sub))
|
|
return -ENOMEM;
|
|
|
|
LIST_FOREACH(sessions_by_user, session, u->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 bus_user_append_idle_hint(DBusMessageIter *i, const char *property, void *data) {
|
|
User *u = data;
|
|
dbus_bool_t b;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
b = user_get_idle_hint(u, NULL) > 0;
|
|
|
|
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int bus_user_append_idle_hint_since(DBusMessageIter *i, const char *property, void *data) {
|
|
User *u = data;
|
|
dual_timestamp t;
|
|
uint64_t k;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
user_get_idle_hint(u, &t);
|
|
k = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
|
|
|
|
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_UINT64, &k))
|
|
return -ENOMEM;
|
|
|
|
return 0;
|
|
}
|
|
|
|
static bus_user_append_default_cgroup(DBusMessageIter *i, const char *property, void *data) {
|
|
User *u = data;
|
|
char *t;
|
|
int r;
|
|
bool success;
|
|
|
|
assert(i);
|
|
assert(property);
|
|
assert(u);
|
|
|
|
r = cg_join_spec(SYSTEMD_CGROUP_CONTROLLER, u->cgroup_path, &t);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
success = dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &t);
|
|
free(t);
|
|
|
|
return success ? 0 : -ENOMEM;
|
|
}
|
|
|
|
static int get_user_for_path(Manager *m, const char *path, User **_u) {
|
|
User *u;
|
|
unsigned long lu;
|
|
int r;
|
|
|
|
assert(m);
|
|
assert(path);
|
|
assert(_u);
|
|
|
|
if (!startswith(path, "/org/freedesktop/login1/user/"))
|
|
return -EINVAL;
|
|
|
|
r = safe_atolu(path + 29, &lu);
|
|
if (r < 0)
|
|
return r;
|
|
|
|
u = hashmap_get(m->users, ULONG_TO_PTR(lu));
|
|
if (!u)
|
|
return -ENOENT;
|
|
|
|
*_u = u;
|
|
return 0;
|
|
}
|
|
|
|
static const BusProperty bus_login_user_properties[] = {
|
|
{ "UID", bus_property_append_uid, "u", offsetof(User, uid) },
|
|
{ "GID", bus_property_append_gid, "u", offsetof(User, gid) },
|
|
{ "Name", bus_property_append_string, "s", offsetof(User, name), true },
|
|
{ "Timestamp", bus_property_append_usec, "t", offsetof(User, timestamp.realtime) },
|
|
{ "TimestampMonotonic", bus_property_append_usec, "t", offsetof(User, timestamp.monotonic) },
|
|
{ "RuntimePath", bus_property_append_string, "s", offsetof(User, runtime_path), true },
|
|
{ "DefaultControlGroup", bus_user_append_default_cgroup, "s", 0 },
|
|
{ "Service", bus_property_append_string, "s", offsetof(User, service), true },
|
|
{ "Display", bus_user_append_display, "(so)", 0 },
|
|
{ "State", bus_user_append_state, "s", 0 },
|
|
{ "Sessions", bus_user_append_sessions, "a(so)", 0 },
|
|
{ "IdleHint", bus_user_append_idle_hint, "b", 0 },
|
|
{ "IdleSinceHint", bus_user_append_idle_hint_since, "t", 0 },
|
|
{ "IdleSinceHintMonotonic", bus_user_append_idle_hint_since, "t", 0 },
|
|
{ NULL, }
|
|
};
|
|
|
|
static DBusHandlerResult user_message_dispatch(
|
|
User *u,
|
|
DBusConnection *connection,
|
|
DBusMessage *message) {
|
|
|
|
DBusError error;
|
|
DBusMessage *reply = NULL;
|
|
int r;
|
|
|
|
assert(u);
|
|
assert(connection);
|
|
assert(message);
|
|
|
|
if (dbus_message_is_method_call(message, "org.freedesktop.login1.User", "Terminate")) {
|
|
|
|
r = user_stop(u);
|
|
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.User", "Kill")) {
|
|
int32_t signo;
|
|
|
|
if (!dbus_message_get_args(
|
|
message,
|
|
&error,
|
|
DBUS_TYPE_INT32, &signo,
|
|
DBUS_TYPE_INVALID))
|
|
return bus_send_error_reply(connection, message, &error, -EINVAL);
|
|
|
|
if (signo <= 0 || signo >= _NSIG)
|
|
return bus_send_error_reply(connection, message, &error, -EINVAL);
|
|
|
|
r = user_kill(u, 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 {
|
|
const BusBoundProperties bps[] = {
|
|
{ "org.freedesktop.login1.User", bus_login_user_properties, u },
|
|
{ NULL, }
|
|
};
|
|
|
|
return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
|
|
}
|
|
|
|
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 user_message_handler(
|
|
DBusConnection *connection,
|
|
DBusMessage *message,
|
|
void *userdata) {
|
|
|
|
Manager *m = userdata;
|
|
User *u;
|
|
int r;
|
|
|
|
r = get_user_for_path(m, dbus_message_get_path(message), &u);
|
|
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 user");
|
|
return bus_send_error_reply(connection, message, &e, r);
|
|
}
|
|
|
|
return bus_send_error_reply(connection, message, NULL, r);
|
|
}
|
|
|
|
return user_message_dispatch(u, connection, message);
|
|
}
|
|
|
|
const DBusObjectPathVTable bus_user_vtable = {
|
|
.message_function = user_message_handler
|
|
};
|
|
|
|
char *user_bus_path(User *u) {
|
|
char *s;
|
|
|
|
assert(u);
|
|
|
|
if (asprintf(&s, "/org/freedesktop/login1/user/%llu", (unsigned long long) u->uid) < 0)
|
|
return NULL;
|
|
|
|
return s;
|
|
}
|
|
|
|
int user_send_signal(User *u, bool new_user) {
|
|
DBusMessage *m;
|
|
int r = -ENOMEM;
|
|
char *p = NULL;
|
|
uint32_t uid;
|
|
|
|
assert(u);
|
|
|
|
m = dbus_message_new_signal("/org/freedesktop/login1",
|
|
"org.freedesktop.login1.Manager",
|
|
new_user ? "UserNew" : "UserRemoved");
|
|
|
|
if (!m)
|
|
return -ENOMEM;
|
|
|
|
p = user_bus_path(u);
|
|
if (!p)
|
|
goto finish;
|
|
|
|
uid = u->uid;
|
|
|
|
if (!dbus_message_append_args(
|
|
m,
|
|
DBUS_TYPE_UINT32, &uid,
|
|
DBUS_TYPE_OBJECT_PATH, &p,
|
|
DBUS_TYPE_INVALID))
|
|
goto finish;
|
|
|
|
if (!dbus_connection_send(u->manager->bus, m, NULL))
|
|
goto finish;
|
|
|
|
r = 0;
|
|
|
|
finish:
|
|
dbus_message_unref(m);
|
|
free(p);
|
|
|
|
return r;
|
|
}
|
|
|
|
int user_send_changed(User *u, const char *properties) {
|
|
DBusMessage *m;
|
|
int r = -ENOMEM;
|
|
char *p = NULL;
|
|
|
|
assert(u);
|
|
|
|
if (!u->started)
|
|
return 0;
|
|
|
|
p = user_bus_path(u);
|
|
if (!p)
|
|
return -ENOMEM;
|
|
|
|
m = bus_properties_changed_new(p, "org.freedesktop.login1.User", properties);
|
|
if (!m)
|
|
goto finish;
|
|
|
|
if (!dbus_connection_send(u->manager->bus, m, NULL))
|
|
goto finish;
|
|
|
|
r = 0;
|
|
|
|
finish:
|
|
if (m)
|
|
dbus_message_unref(m);
|
|
free(p);
|
|
|
|
return r;
|
|
}
|