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/*-*- Mode: C; c-basic-offset: 8 -*-*/
#include <errno.h>
#include "dbus.h"
#include "log.h"
static const char introspection[] =
DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
"<node>"
" <interface name=\"org.freedesktop.systemd1.Unit\">"
" <method name=\"Start\">"
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>"
" <arg name=\"job\" type=\"o\" direction=\"out\"/>"
" </method>"
" <method name=\"Stop\">"
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>"
" <arg name=\"job\" type=\"o\" direction=\"out\"/>"
" </method>"
" <method name=\"Restart\">"
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>"
" <arg name=\"job\" type=\"o\" direction=\"out\"/>"
" </method>"
" <method name=\"Reload\">"
" <arg name=\"mode\" type=\"s\" direction=\"in\"/>"
" <arg name=\"job\" type=\"o\" direction=\"out\"/>"
" </method>"
" <property name=\"Id\" type=\"s\" access=\"read\"/>"
" <property name=\"Description\" type=\"s\" access=\"read\"/>"
" <property name=\"LoadState\" type=\"s\" access=\"read\"/>"
" <property name=\"ActiveState\" type=\"s\" access=\"read\"/>"
" <property name=\"LoadPath\" type=\"s\" access=\"read\"/>"
" <property name=\"ActiveEnterTimestamp\" type=\"t\" access=\"read\"/>"
" <property name=\"ActiveExitTimestamp\" type=\"t\" access=\"read\"/>"
" <property name=\"CanReload\" type=\"b\" access=\"read\"/>"
" <property name=\"CanStart\" type=\"b\" access=\"read\"/>"
" <property name=\"Job\" type=\"(uo)\" access=\"read\"/>"
" </interface>"
BUS_PROPERTIES_INTERFACE
BUS_INTROSPECTABLE_INTERFACE
"</node>";
static int bus_unit_append_id(Manager *m, DBusMessageIter *i, const char *property, void *data) {
Unit *u = data;
const char *id;
assert(m);
assert(i);
assert(property);
assert(u);
id = unit_id(u);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &id))
return -ENOMEM;
return 0;
}
static int bus_unit_append_description(Manager *m, DBusMessageIter *i, const char *property, void *data) {
Unit *u = data;
const char *d;
assert(m);
assert(i);
assert(property);
assert(u);
d = unit_description(u);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &d))
return -ENOMEM;
return 0;
}
static int bus_unit_append_load_state(Manager *m, DBusMessageIter *i, const char *property, void *data) {
Unit *u = data;
const char *state;
assert(m);
assert(i);
assert(property);
assert(u);
state = unit_load_state_to_string(u->meta.load_state);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
return -ENOMEM;
return 0;
}
static int bus_unit_append_active_state(Manager *m, DBusMessageIter *i, const char *property, void *data) {
Unit *u = data;
const char *state;
assert(m);
assert(i);
assert(property);
assert(u);
state = unit_active_state_to_string(unit_active_state(u));
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_STRING, &state))
return -ENOMEM;
return 0;
}
static int bus_unit_append_can_reload(Manager *m, DBusMessageIter *i, const char *property, void *data) {
Unit *u = data;
dbus_bool_t b;
assert(m);
assert(i);
assert(property);
assert(u);
b = unit_can_reload(u);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
return -ENOMEM;
return 0;
}
static int bus_unit_append_can_start(Manager *m, DBusMessageIter *i, const char *property, void *data) {
Unit *u = data;
dbus_bool_t b;
assert(m);
assert(i);
assert(property);
assert(u);
b = unit_can_start(u);
if (!dbus_message_iter_append_basic(i, DBUS_TYPE_BOOLEAN, &b))
return -ENOMEM;
return 0;
}
static int bus_unit_append_job(Manager *m, DBusMessageIter *i, const char *property, void *data) {
Unit *u = data;
DBusMessageIter sub;
char *p;
assert(m);
assert(i);
assert(property);
assert(u);
if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
return -ENOMEM;
if (u->meta.job) {
if (!(p = job_dbus_path(u->meta.job)))
return -ENOMEM;
if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &u->meta.job->id) ||
!dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
free(p);
return -ENOMEM;
}
} else {
uint32_t id = 0;
/* No job, so let's fill in some placeholder
* data. Since we need to fill in a valid path we
* simple point to ourselves. */
if (!(p = unit_dbus_path(u)))
return -ENOMEM;
if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_UINT32, &id) ||
!dbus_message_iter_append_basic(&sub, DBUS_TYPE_OBJECT_PATH, &p)) {
free(p);
return -ENOMEM;
}
}
free(p);
if (!dbus_message_iter_close_container(i, &sub))
return -ENOMEM;
return 0;
}
static DBusHandlerResult bus_unit_message_dispatch(Unit *u, DBusMessage *message) {
const BusProperty properties[] = {
{ "org.freedesktop.systemd1.Unit", "Id", bus_unit_append_id, "s", u },
{ "org.freedesktop.systemd1.Unit", "Description", bus_unit_append_description, "s", u },
{ "org.freedesktop.systemd1.Unit", "LoadState", bus_unit_append_load_state, "s", u },
{ "org.freedesktop.systemd1.Unit", "ActiveState", bus_unit_append_active_state, "s", u },
{ "org.freedesktop.systemd1.Unit", "LoadPath", bus_property_append_string, "s", u->meta.load_path },
{ "org.freedesktop.systemd1.Unit", "ActiveEnterTimestamp", bus_property_append_uint64, "t", &u->meta.active_enter_timestamp },
{ "org.freedesktop.systemd1.Unit", "ActiveExitTimestamp", bus_property_append_uint64, "t", &u->meta.active_exit_timestamp },
{ "org.freedesktop.systemd1.Unit", "CanReload", bus_unit_append_can_reload, "b", u },
{ "org.freedesktop.systemd1.Unit", "CanStart", bus_unit_append_can_start, "b", u },
{ "org.freedesktop.systemd1.Unit", "Job", bus_unit_append_job, "(uo)", u },
{ NULL, NULL, NULL, NULL, NULL }
};
DBusMessage *reply = NULL;
Manager *m = u->meta.manager;
DBusError error;
JobType job_type = _JOB_TYPE_INVALID;
dbus_error_init(&error);
if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Start"))
job_type = JOB_START;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Stop"))
job_type = JOB_STOP;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Reload"))
job_type = JOB_RELOAD;
else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Unit", "Restart"))
job_type = JOB_RESTART;
else
return bus_default_message_handler(u->meta.manager, message, introspection, properties);
if (job_type != _JOB_TYPE_INVALID) {
const char *smode;
JobMode mode;
Job *j;
int r;
char *path;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &smode,
DBUS_TYPE_INVALID))
return bus_send_error_reply(m, message, &error, -EINVAL);
if ((mode = job_mode_from_string(smode)) == _JOB_MODE_INVALID)
return bus_send_error_reply(m, message, NULL, -EINVAL);
if ((r = manager_add_job(m, job_type, u, mode, true, &j)) < 0)
return bus_send_error_reply(m, message, NULL, r);
if (!(reply = dbus_message_new_method_return(message)))
goto oom;
if (!(path = job_dbus_path(j)))
goto oom;
if (!dbus_message_append_args(
reply,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID))
goto oom;
}
if (reply) {
if (!dbus_connection_send(m->bus, 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 bus_unit_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
Manager *m = data;
Unit *u;
int r;
assert(connection);
assert(message);
assert(m);
log_debug("Got D-Bus request: %s.%s() on %s",
dbus_message_get_interface(message),
dbus_message_get_member(message),
dbus_message_get_path(message));
if ((r = manager_get_unit_from_dbus_path(m, dbus_message_get_path(message), &u)) < 0) {
if (r == -ENOMEM)
return DBUS_HANDLER_RESULT_NEED_MEMORY;
if (r == -ENOENT)
return DBUS_HANDLER_RESULT_NOT_YET_HANDLED;
return bus_send_error_reply(m, message, NULL, r);
}
return bus_unit_message_dispatch(u, message);
}
const DBusObjectPathVTable bus_unit_vtable = {
.message_function = bus_unit_message_handler
};
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