+++ /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-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=\"ControlGroupPath\" 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 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 DBusHandlerResult user_message_dispatch(
- User *u,
- DBusConnection *connection,
- DBusMessage *message) {
-
- const BusProperty properties[] = {
- { "org.freedesktop.login1.User", "UID", bus_property_append_uid, "u", &u->uid },
- { "org.freedesktop.login1.User", "GID", bus_property_append_gid, "u", &u->gid },
- { "org.freedesktop.login1.User", "Name", bus_property_append_string, "s", u->name },
- { "org.freedesktop.login1.User", "Timestamp", bus_property_append_usec, "t", &u->timestamp.realtime },
- { "org.freedesktop.login1.User", "TimestampMonotonic", bus_property_append_usec, "t", &u->timestamp.monotonic },
- { "org.freedesktop.login1.User", "RuntimePath", bus_property_append_string, "s", u->runtime_path },
- { "org.freedesktop.login1.User", "ControlGroupPath", bus_property_append_string, "s", u->cgroup_path },
- { "org.freedesktop.login1.User", "Service", bus_property_append_string, "s", u->service },
- { "org.freedesktop.login1.User", "Display", bus_user_append_display, "(so)", u },
- { "org.freedesktop.login1.User", "State", bus_user_append_state, "s", u },
- { "org.freedesktop.login1.User", "Sessions", bus_user_append_sessions, "a(so)", u },
- { "org.freedesktop.login1.User", "IdleHint", bus_user_append_idle_hint, "b", u },
- { "org.freedesktop.login1.User", "IdleSinceHint", bus_user_append_idle_hint_since, "t", u },
- { "org.freedesktop.login1.User", "IdleSinceHintMonotonic", bus_user_append_idle_hint_since, "t", u },
- { NULL, NULL, NULL, NULL, NULL }
- };
-
- 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
- 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 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;
-}
~ianmdlvl / elogind.git / blobdiff