361 lines
10 KiB
C
361 lines
10 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 Lesser General Public License as published by
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the Free Software Foundation; either version 2.1 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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Lesser 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 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 <string.h>
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#include "strv.h"
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#include "bus-util.h"
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#include "logind.h"
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#include "logind-user.h"
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static int property_get_display(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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_cleanup_free_ char *p = NULL;
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User *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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p = u->display ? session_bus_path(u->display) : strdup("/");
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if (!p)
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return -ENOMEM;
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return sd_bus_message_append(reply, "(so)", u->display ? u->display->id : "", p);
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}
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static int property_get_state(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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User *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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return sd_bus_message_append(reply, "s", user_state_to_string(user_get_state(u)));
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}
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static int property_get_sessions(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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User *u = userdata;
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Session *session;
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int r;
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assert(bus);
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assert(reply);
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assert(u);
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r = sd_bus_message_open_container(reply, 'a', "(so)");
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if (r < 0)
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return r;
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LIST_FOREACH(sessions_by_user, session, u->sessions) {
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_cleanup_free_ char *p = NULL;
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p = session_bus_path(session);
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if (!p)
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return -ENOMEM;
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r = sd_bus_message_append(reply, "(so)", session->id, p);
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if (r < 0)
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return r;
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}
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r = sd_bus_message_close_container(reply);
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if (r < 0)
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return r;
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return 1;
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}
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static int property_get_idle_hint(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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User *u = userdata;
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assert(bus);
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assert(reply);
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assert(u);
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return sd_bus_message_append(reply, "b", user_get_idle_hint(u, NULL) > 0);
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}
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static int property_get_idle_since_hint(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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User *u = userdata;
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dual_timestamp t;
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uint64_t k;
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assert(bus);
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assert(reply);
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assert(u);
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user_get_idle_hint(u, &t);
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k = streq(property, "IdleSinceHint") ? t.realtime : t.monotonic;
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return sd_bus_message_append(reply, "t", k);
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}
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static int property_get_linger(
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sd_bus *bus,
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const char *path,
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const char *interface,
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const char *property,
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sd_bus_message *reply,
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void *userdata,
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sd_bus_error *error) {
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User *u = userdata;
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int r;
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assert(bus);
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assert(reply);
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assert(u);
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r = user_check_linger_file(u);
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return sd_bus_message_append(reply, "b", r > 0);
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}
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static int method_terminate(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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User *u = userdata;
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int r;
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assert(bus);
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assert(message);
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assert(u);
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r = user_stop(u);
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if (r < 0)
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return r;
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return sd_bus_reply_method_return(message, NULL);
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}
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static int method_kill(sd_bus *bus, sd_bus_message *message, void *userdata, sd_bus_error *error) {
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User *u = userdata;
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int32_t signo;
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int r;
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assert(bus);
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assert(message);
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assert(u);
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r = sd_bus_message_read(message, "i", &signo);
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if (r < 0)
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return r;
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if (signo <= 0 || signo >= _NSIG)
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return sd_bus_error_setf(error, SD_BUS_ERROR_INVALID_ARGS, "Invalid signal %i", signo);
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r = user_kill(u, signo);
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if (r < 0)
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return r;
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return sd_bus_reply_method_return(message, NULL);
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}
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const sd_bus_vtable user_vtable[] = {
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SD_BUS_VTABLE_START(0),
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SD_BUS_PROPERTY("UID", "u", bus_property_get_uid, offsetof(User, uid), 0),
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SD_BUS_PROPERTY("GID", "u", bus_property_get_gid, offsetof(User, gid), 0),
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SD_BUS_PROPERTY("Name", "s", NULL, offsetof(User, name), 0),
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SD_BUS_PROPERTY("Timestamp", "t", NULL, offsetof(User, timestamp.realtime), 0),
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SD_BUS_PROPERTY("TimestampMonotonic", "t", NULL, offsetof(User, timestamp.monotonic), 0),
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SD_BUS_PROPERTY("RuntimePath", "s", NULL, offsetof(User, runtime_path), 0),
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SD_BUS_PROPERTY("Service", "s", NULL, offsetof(User, service), 0),
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SD_BUS_PROPERTY("Slice", "s", NULL, offsetof(User, slice), 0),
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SD_BUS_PROPERTY("Display", "(so)", property_get_display, 0, 0),
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SD_BUS_PROPERTY("State", "s", property_get_state, 0, 0),
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SD_BUS_PROPERTY("Sessions", "a(so)", property_get_sessions, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_PROPERTY("IdleHint", "b", property_get_idle_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_PROPERTY("IdleSinceHint", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_PROPERTY("IdleSinceHintMonotonic", "t", property_get_idle_since_hint, 0, SD_BUS_VTABLE_PROPERTY_EMITS_CHANGE),
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SD_BUS_PROPERTY("Linger", "b", property_get_linger, 0, 0),
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SD_BUS_METHOD("Terminate", NULL, NULL, method_terminate, 0),
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SD_BUS_METHOD("Kill", "i", NULL, method_kill, 0),
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SD_BUS_VTABLE_END
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};
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int user_object_find(sd_bus *bus, const char *path, const char *interface, void **found, void *userdata) {
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Manager *m = userdata;
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User *user;
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int r;
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assert(bus);
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assert(path);
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assert(interface);
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assert(found);
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assert(m);
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if (streq(path, "/org/freedesktop/login1/user/self")) {
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sd_bus_message *message;
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pid_t pid;
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message = sd_bus_get_current(bus);
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if (!message)
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return 0;
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r = sd_bus_get_owner_pid(bus, sd_bus_message_get_sender(message), &pid);
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if (r < 0)
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return 0;
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r = manager_get_user_by_pid(m, pid, &user);
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if (r <= 0)
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return 0;
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} else {
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unsigned long lu;
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const char *p;
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p = startswith(path, "/org/freedesktop/login1/user/_");
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if (!p)
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return 0;
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r = safe_atolu(p, &lu);
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if (r < 0)
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return 0;
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user = hashmap_get(m->users, ULONG_TO_PTR(lu));
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if (!user)
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return 0;
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}
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*found = user;
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return 1;
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}
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char *user_bus_path(User *u) {
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char *s;
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assert(u);
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if (asprintf(&s, "/org/freedesktop/login1/user/_%llu", (unsigned long long) u->uid) < 0)
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return NULL;
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return s;
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}
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int user_node_enumerator(sd_bus *bus, const char *path, char ***nodes, void *userdata) {
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_cleanup_strv_free_ char **l = NULL;
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Manager *m = userdata;
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User *user;
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Iterator i;
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int r;
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assert(bus);
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assert(path);
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assert(nodes);
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HASHMAP_FOREACH(user, m->users, i) {
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char *p;
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p = user_bus_path(user);
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if (!p)
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return -ENOMEM;
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r = strv_push(&l, p);
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if (r < 0) {
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free(p);
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return r;
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}
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}
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*nodes = l;
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l = NULL;
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return 1;
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}
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int user_send_signal(User *u, bool new_user) {
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_cleanup_free_ char *p = NULL;
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assert(u);
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p = user_bus_path(u);
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if (!p)
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return -ENOMEM;
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return sd_bus_emit_signal(
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u->manager->bus,
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"/org/freedesktop/login1",
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"org.freedesktop.login1.Manager",
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new_user ? "UserNew" : "UserRemoved",
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"uo", (uint32_t) u->uid, p);
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}
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int user_send_changed(User *u, const char *properties, ...) {
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_cleanup_free_ char *p = NULL;
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char **l;
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assert(u);
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if (!u->started)
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return 0;
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p = user_bus_path(u);
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if (!p)
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return -ENOMEM;
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l = strv_from_stdarg_alloca(properties);
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return sd_bus_emit_properties_changed_strv(u->manager->bus, p, "org.freedesktop.login1.User", l);
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}
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