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-rw-r--r--src/login/logind-user-dbus.c411
1 files changed, 411 insertions, 0 deletions
diff --git a/src/login/logind-user-dbus.c b/src/login/logind-user-dbus.c
new file mode 100644
index 0000000000..3673a28bd4
--- /dev/null
+++ b/src/login/logind-user-dbus.c
@@ -0,0 +1,411 @@
+/*-*- 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;
+}