logind: move logind into its own subdirectory

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 000000000..3673a28bd
--- /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;
+}