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-rw-r--r--src/dbus-job.c236
1 files changed, 236 insertions, 0 deletions
diff --git a/src/dbus-job.c b/src/dbus-job.c
new file mode 100644
index 0000000000..3a6e7159e9
--- /dev/null
+++ b/src/dbus-job.c
@@ -0,0 +1,236 @@
+/*-*- Mode: C; c-basic-offset: 8 -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2010 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 "dbus.h"
+#include "log.h"
+#include "dbus-job.h"
+
+static const char introspection[] =
+ DBUS_INTROSPECT_1_0_XML_DOCTYPE_DECL_NODE
+ "<node>"
+ " <interface name=\"org.freedesktop.systemd1.Job\">"
+ " <method name=\"Cancel\"/>"
+ " <signal name=\"Changed\"/>"
+ " <property name=\"Id\" type=\"u\" access=\"read\"/>"
+ " <property name=\"Unit\" type=\"(so)\" access=\"read\"/>"
+ " <property name=\"JobType\" type=\"s\" access=\"read\"/>"
+ " <property name=\"State\" type=\"s\" access=\"read\"/>"
+ " </interface>"
+ BUS_PROPERTIES_INTERFACE
+ BUS_INTROSPECTABLE_INTERFACE
+ "</node>";
+
+static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_state, job_state, JobState);
+static DEFINE_BUS_PROPERTY_APPEND_ENUM(bus_job_append_type, job_type, JobType);
+
+static int bus_job_append_unit(Manager *m, DBusMessageIter *i, const char *property, void *data) {
+ Job *j = data;
+ DBusMessageIter sub;
+ char *p;
+
+ assert(m);
+ assert(i);
+ assert(property);
+ assert(j);
+
+ if (!dbus_message_iter_open_container(i, DBUS_TYPE_STRUCT, NULL, &sub))
+ return -ENOMEM;
+
+ if (!(p = unit_dbus_path(j->unit)))
+ return -ENOMEM;
+
+ if (!dbus_message_iter_append_basic(&sub, DBUS_TYPE_STRING, &j->unit->meta.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_job_message_dispatch(Job *j, DBusMessage *message) {
+ const BusProperty properties[] = {
+ { "org.freedesktop.systemd1.Job", "Id", bus_property_append_uint32, "u", &j->id },
+ { "org.freedesktop.systemd1.Job", "State", bus_job_append_state, "s", &j->state },
+ { "org.freedesktop.systemd1.Job", "JobType", bus_job_append_type, "s", &j->type },
+ { "org.freedesktop.systemd1.Job", "Unit", bus_job_append_unit, "(so)", j },
+ { NULL, NULL, NULL, NULL, NULL }
+ };
+
+ DBusMessage *reply = NULL;
+ Manager *m = j->manager;
+
+ if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Job", "Cancel")) {
+ if (!(reply = dbus_message_new_method_return(message)))
+ goto oom;
+
+ job_free(j);
+
+ } else
+ return bus_default_message_handler(j->manager, message, introspection, properties);
+
+ if (reply) {
+ if (!dbus_connection_send(m->api_bus, reply, NULL))
+ goto oom;
+
+ dbus_message_unref(reply);
+ }
+
+ return DBUS_HANDLER_RESULT_HANDLED;
+
+oom:
+ if (reply)
+ dbus_message_unref(reply);
+
+ return DBUS_HANDLER_RESULT_NEED_MEMORY;
+}
+
+static DBusHandlerResult bus_job_message_handler(DBusConnection *connection, DBusMessage *message, void *data) {
+ Manager *m = data;
+ Job *j;
+ 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_job_from_dbus_path(m, dbus_message_get_path(message), &j)) < 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_job_message_dispatch(j, message);
+}
+
+const DBusObjectPathVTable bus_job_vtable = {
+ .message_function = bus_job_message_handler
+};
+
+void bus_job_send_change_signal(Job *j) {
+ char *p = NULL;
+ DBusMessage *m = NULL;
+
+ assert(j);
+ assert(j->in_dbus_queue);
+
+ LIST_REMOVE(Job, dbus_queue, j->manager->dbus_job_queue, j);
+ j->in_dbus_queue = false;
+
+ if (set_isempty(j->manager->subscribed)) {
+ j->sent_dbus_new_signal = true;
+ return;
+ }
+
+ if (!(p = job_dbus_path(j)))
+ goto oom;
+
+ if (j->sent_dbus_new_signal) {
+ /* Send a change signal */
+
+ if (!(m = dbus_message_new_signal(p, "org.freedesktop.systemd1.Job", "Changed")))
+ goto oom;
+ } else {
+ /* Send a new signal */
+
+ if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobNew")))
+ goto oom;
+
+ if (!dbus_message_append_args(m,
+ DBUS_TYPE_UINT32, &j->id,
+ DBUS_TYPE_OBJECT_PATH, &p,
+ DBUS_TYPE_INVALID))
+ goto oom;
+ }
+
+ if (!dbus_connection_send(j->manager->api_bus, m, NULL))
+ goto oom;
+
+ free(p);
+ dbus_message_unref(m);
+
+ j->sent_dbus_new_signal = true;
+
+ return;
+
+oom:
+ free(p);
+
+ if (m)
+ dbus_message_unref(m);
+
+ log_error("Failed to allocate job change signal.");
+}
+
+void bus_job_send_removed_signal(Job *j) {
+ char *p = NULL;
+ DBusMessage *m = NULL;
+
+ assert(j);
+
+ if (set_isempty(j->manager->subscribed) || !j->sent_dbus_new_signal)
+ return;
+
+ if (!(p = job_dbus_path(j)))
+ goto oom;
+
+ if (!(m = dbus_message_new_signal("/org/freedesktop/systemd1", "org.freedesktop.systemd1.Manager", "JobRemoved")))
+ goto oom;
+
+ if (!dbus_message_append_args(m,
+ DBUS_TYPE_UINT32, &j->id,
+ DBUS_TYPE_OBJECT_PATH, &p,
+ DBUS_TYPE_INVALID))
+ goto oom;
+
+ if (!dbus_connection_send(j->manager->api_bus, m, NULL))
+ goto oom;
+
+ free(p);
+ dbus_message_unref(m);
+
+ return;
+
+oom:
+ free(p);
+
+ if (m)
+ dbus_message_unref(m);
+
+ log_error("Failed to allocate job remove signal.");
+}